2012年5月29日星期二

Laser induced bubbles robot


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shock guns - China Manufacturer
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Recently, researchers from the University of Hawaii, their success will bubble into the control for the laser micro-robot ". The reason why the double quotes, because this bubble is not equipped with artificial intelligence, the principle is very simple. In the laborato ry, such a bubble in brine made of a 400-mW infrared laser control. Controller injection laser according to the inner surface of the bubble by the laser heating effect, the bubble surface of the liquid flow toward the colder side to the final result thus obtained is the bubble itself toward the laser refers to the move. It is reported that the current use of this controlled bubble is still very limited. Move other particles, which showed a high controllability and accuracy.

The researchers said that the implications of this study is that a very low cost, they will be able to create a massive bubble "robot". In theory, multiple bubbles can form a variety of more complex structures, corresponding to different needs. When this bubble Corps may be known as the real robot.
 

Mountain on their own sports development


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electrical bike - China Manufacturer
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In the mountain biking movement, the French player has developed into a new force in today s international competitions with other troupes such as the United States, Australia has become a leader in the sport. French First project in this year s World Championship downhill (Downhill Event) struck up a triumphal song, including the drivers rich the Er Luosi (N.Vouilloz), and Jia Shute (Gachot) respectively in the Men s Downhill Champion, runner-up. Women s Downhill, Shu (ACChauss, mountain bike mini electric scooter
on) for France in the youth group events to win other side of the trophy is worth noting that, she won the first prize in this group to make time, even faster than the record made by a senior group of players, we can see France was very powerful in the downhill project. diy electric bikes Cross-country projects in the class of the Netherlands Penzance (B.Brentjens), beat the group to become the champion of the men, the Women s title by the Canadian horsewoman cents Dai (A.Sydor), to obtain. These newly crowned World "mountain road", after this conquest of the Black Forest, Germany, nex t year will have to accept a greater challenge - mountain biking has been endorsed by the International Olympic Committee is a formal quasi-row, and in 1996 in Atlanta Olympic Games debut as a competition project.push golf trolley

2012年5月20日星期日

Principle and main structure of the fresh air ventilator


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diffuser ceiling - China Manufacturer
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The fresh air ventilator is an air purification equipment, purification and heat exchange process, keep indoor air fresh, smooth, fresh air ventilator is an energy efficient ventilation through the exchange of indoor and outdoor air into the indoor air products. That fresh air ventilator indoor ventilation, our new air exchanger principle to analyze the ventilation function of the fresh air ventilator.
Fresh air ventilation machine theory
The fresh air ventilator core device is the total heat exchanger, the indoor discharge of polluted air and the outdoors into the fresh air is exchanged through the heat transfer plate temperature, at the same time by the board micropore exchange of humidity, so as to achieve both ventilation keep the indoor temperature, the stabilizing effect of humidity, which is the heat exchange process. When the total heat exchanger running in the summer cooling period, the cold fresh air from the exhaust, so that the temperature decreases, while the exhaust drying, so that the new lower air humidity; run in the winter, the fresh air from the exhaust heat, so that temperature, while the exhaust air humidification.
Fresh air ventilator structure
Ventilators by the new wind power systems, heat exchange systems, control systems, filtration systems, noise reduction system and cabinet composed of the following, we each of the introduction of these six parts.
1, the power system
The fresh air ventilator dynamic part is a high-efficiency, lower noise fan. After filtration, purification and thermal mandatory exchange treatment, the fresh outdoor air into the interior, while the indoor harmful gas filtration, purification and heat exchange processing is mandatory exhausted to the outside.
2, the heat exchange system
At present, whether in domestic or foreign, heat exchangers used in the fresh air ventilation on the stationary and rotating in two forms which the rotary heat exchanger is a rotary type. Departure from normal use and maintenance point of view, static is better than a rotary, but greater than 2 × 10000m3 / h, the mainframe, the general can only rely on the rotary heat exchanger can be achieved, it can be said stationary and rotating advantages and disadvantages.
3, the control system
(1) fresh air ventilators selection of reliable electrical components in a safe and reliable longevity run different air flow control.
(2) can be achieved automatically, timing, preset.
â'¢ optional depending on the use of different control methods.
4, the filtration system
Filtration of fresh air ventilator system is divided into the early effect of, in effect, sub-efficient and efficient four kinds of filters. Ventilators were set in both the inlet of the air filter can effectively filter dust particles, fibers and other impurities in the air, effectively blocking the outdoor air, dust and other impurities into the room to purify the purpose and to ensure that the heat of the host switching components are dirt attached to affect device performance.
5, the noise reduction system
The fresh air ventilator inside the host shell paste the polyethylene foam material, sheet metal junction long-term sealing material, which can effectively reduce the noise of the machine.
6, shell
The fresh air ventilator enclosure cabinet structure, respectively, using the cold plate is sprayed with plastic, stainless steel plates of different materials, processing of different materials can also be selected according to the actual needs of users.
Growing building closed, many people are behind closed doors and windows open air-conditioning, which leads to a lot of harmful gases have long remained in the room can not be excluded, and the passage of time will breed a lot of bacteria, affect their health and work efficiency, in order to better solve this problem, we must use the fresh air ventilator to improve indoor air quality can be seen that the new principle of air ventilator fresh air ventilator can not only quick replacement of indoor air also can be the total heat exchange to save the building energy consumption.

The air handling unit procurement guidelines the Jaco air handling units experts


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air diffuser grilles - China Manufacturer
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air handling units are divided into: the modular air handling units, heat recovery air handling units, ceiling type air handling units
The KGW horizontal air handler series
Air volume range :3000-80 000 m3 / h
Use of imported double inlet forward curved or backward curved centrifugal fan, the aerodynamic performance of the design requirements the impellers been static, dynamic balance of design and stable performance, low noise.
Coil brass fins are mechanical low pressure up to then, closely connected with the heat transfer effect. Fins imported high quality aluminum foil, OAK device twice flange molding.
ZK modular air handlers series
Air volume range :3000-120 000 m3 / h
: Mixing section, the early effect of the filter section, the mixed filter section, the table cold forging, heating section, humidification section, dehumidification section, spray section, secondary air segment, the middle section, fan section, strea m segment, in effect, section, sub-efficient segment, highly efficient segment, muffler section, a wind section. The air handling unit procurement guidelines, the Jaco air handling units experts
The air handling unit procurement guidelines, the Jaco air handling units experts
Air handling units are divided into: the modular air handling units, heat recovery air handling units, ceiling type air handling units
The KGW horizontal air handler series
Air volume range :3000-80 000 m3 / h
Use of imported double inlet forward curved or backward curved centrifugal fan, the aerodynamic performance of the design requirements the impellers been static, dynamic balance of design and stable performance, low noise.
Coil brass fins are mechanical low pressure up to then, closely connected with the heat transfer effect. Fins imported high quality aluminum foil, OAK device twice flange molding.
ZK modular air handlers series
Air volume range :3000-120 0 00 m3 / h
: Mixing section, the early effect of the filter section, the mixed filter section, the table cold forging, heating section, humidification section, dehumidification section, spray section, secondary air segment, the middle section, fan section, stream segment, in effect, section, sub-efficient segment, highly efficient segment, muffler section, a wind section.

Fan coil leakage problem solution


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air vent grilles - China Manufacturer
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http://www.foundation-hvac.com/key-air-vent-grilles-675/



The fan coil leaks how to solve?
        The fan coil leakage of a room fan coil leaks, and the Jaco air conditioning for the room fan coil leakage solution.
        First of all, we want to exclude several conditions: room fan coil often leaking problems, such as piping, valves damaged, then usually is caused by condensed water. Generally frozen surface cooler like repair.
        Leakage outside the catchment tray in the fan coil insulation problems, strengthening the insulation, put an end to want contact with indoor air. Can be ruled out; in the catchment tray, fan coil condensate pipe is not smooth, condensate overflow, way to clear the condensate pipe, usually to a 4-5 meter-long plastic tube, a plug into the condensate discharge pipe, a pick (you can make a small connector on the bathroom faucet, purge rely on threaded screw on the faucet), the pressure of the water, drain, or carbon dioxide cylinders.
        Phenomenon is often blocked by the fan coil condensate pipe, which is mainly the presence of water, coupled with the appropriate temperature in room fan coil, easy algal bloom growth, resulting in a very thick gelatinous slippery residuals, the condensate tube blocked. Abroad often placed in the catchment of the room fan coil plate the algicide drugs to reduce the harm.

2012年5月18日星期五

Specific description of the gear reducer power application


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helical speed reducer - China Manufacturer
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    The power of the planetary gear reducer is the additional value of the tot al mechanical power of movement and rotating parts in the installation of closed transmission. Minimum calculation of closed transmission installation parts power by Pme (the weakest local can determine with the gear teeth, shaft, bolt, box, etc.) the resolution power of the gearbox loop 10,000 times in the 200% load, plus 100% load operation 10000h conditions to determine the power of the gear reducer gearbox power should also include a cantilever load allowed on regular intervals has been the gearbox by the end of the start of cantilever loads to combat. In determining the power of the gearbox, spiral lift the use of selected units the coefficient K8f = 1.0.
   The power requirements of the gear box gear box power means the power of all items in the gear box designed to meet or exceed the gearbox. The big gear and pinion power should conform with the rules of the bending strength and understanding of the strength of additional value. Using closed transmission power of the gear box to install the required gearbox power is applied and assessed the function of the variable elements, it is against the total power. These factors include environmental conditions, harsh level of life functioning. The use of closed transmission installed gear reducer power to meet the needs of practical operating conditions. According to site information or experience a reasonable choice of the selection coefficient.
   Transient overload when closed drive to install to weather transient overload, the motor indirect online start, brake, stall conditions, and low cycle fatigue, the calculation conditions should ensure that do not go beyond the ultimate strength of any part. As for the gear bending strength of transient overload, the fatigue limit to determine the maximum allowable stress data Xu. Axis, the period of the deformation of the bearing and the cabinet in the transient overload gear teeth meshing important blow. Closed transmission installation to ensure that in the calculation of instantaneous overload response without incurring the high stress concentration may be partially due to excessive tooth mismatch sparked forever deformation. In addition, it is necessary to calculate the external load such as cantilevers, lateral bending and axial thrust loads to combat

2012年5月16日星期三

Manual hydraulic forklift l is not high, how to repair


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forklift fork attachments - China Manufacturer
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http://www.forklift-fork.com/key-forklift-fork-attachments-158/



Early found that the forklift is not always rise to the highest place, resulting in unfavorable progress of work. After the investigation is following oil spill, the ca use can not rise to the highest point.
Oil spills are the most common multi-valve failure. Encountered such a problem, first do not worry, the analysis of reasons:
1, the internal leakage
Multi-valve internal leakage occurs, the working oil path connected back to the oil passages or oil spill Road, hydraulic oil back into the tank to complete the operation, resulting in the lifting hydraulic cylinder lifting unable or lifting forks on their own downturn and the door frame their own forward failure. Analysis and elimination of the internal leakage is:
(1) between the stem and valve wear gap is too large
Multi-valve lifting and tilting of the stem on each of the three grooves, the grooves and the oil passages with the connect or disconnect the oil, change ways of working. A small gap between the distribution of the valve stem and valve oil spills rarely, the hydraulic cylinder down or tilt is very small, does not affect the work. Wear gap is too large, the hydraulic oil in the working pump pressure will cause working oil channel in the oil and the oil return channel or spill Road connected, and automatically back to the tank. The main cause, accelerate the wear of the stem and the body due to the distribution valves for long-term use or fluid dirty, destroyed with the sealing surface, resulting in oil spills. Repair the valve stem wear lighter stem chrome-plated polished; if the stem is badly worn, you will need to be replaced.
(2) Valve between the oil spill
Working oil passages, oil return Road, oil spill Road runs through the three monolithic body, the valve between the sealing requirements, install the O-ring between the valve body and valve oil channel. the body with bolts from the Lai achieve the purpose of sealing.
If the solid torque bolts, may lead to warping body. Seal failure, the inner leakage; If the installation of injury or O-ring of the valve body performance to aging or damaged, the valve b etween the hydraulic effect, is also prone to leakage. Repair the body damage which need to be ground, replace the O-ring, according to the order and torque tighten the bolts.
(3) safety valve spring failure
The safety valve used to regulate the system pressure, so the pressure was maintained within a certain range to prevent damage to the parts in the hydraulic system overload, the hydraulic cylinder piston to limit location or other reasons. The main safety valve by the spring force to the ball pressure on the valve position to achieve the purpose of opening and closing. When the oil pressure of the hydraulic pump output exceeds the set value, the high pressure oil pressure to overcome part of the high pressure oil return to tank relief valve Oil Spill Road. When the oil pressure reaches the specified value, the spring preload of the role of the steel ball pressed on the valve position, the safety valve is closed.
If the safety valve spring failure, hydraulic oil under pressure below the system requirements can force the ball to leave the valve position into the oil spill Road, resulting in leakage, the system failure. Repair to replace the spring, and then use the adjustment screw to adjust the spring pressure to the provisions of 14 Mpa. Adjust the load when the demand from the load center of 600mm at 7.5t cargo, goods like from the non-starting with locking nut, this time the pressure is the need to adjust the pressure.
(4) multi-valve rod can not be reset
Stem return spring is installed in the lower end of the stem, regardless of stem can make the upper or in the next spring is compressed, in the absence of external force, because the spring will make the stem rapid return to its original position. If the stem can not be reset, the trench connected with the oil passages, will produce leakage. First, stem return spring deformed or damaged, the lower spring force and not make the stem back in place, repairs are required to replace the spring; between body and stem are dirty, have a greater resistance to stem Reset difficulties, internal multi-channel valve repair should be washed to eliminate the resistance.
(5) poppet valve wear
The poppet valve is used to prevent fluid backflow. If the cone valve wear, oil Road off Mission lax, the hydraulic oil will return, so that the system failure. Repair, response into the grinding or replacement. Elimination of reflux.
2, valve oil leakage
The sealing of the stem and the body rely on the O-ring seals aging or damaged in the system under pressure hydraulic oil will flow along the stem, leading to body oil leakage. Troubleshoot this, simply replace the O-ring can

How economical and reasonable choice of loader


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forklift fork extensions - China Manufacturer
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The loader is handling soil, sand and gravel, coal and other materials-based, small multi-purpose high-efficiency construction machinery, applies to mines, ports, infrastruct ure, road building and other operations, are widely used in factories, railway stations, docks, freight yards, warehouses, and other working conditions. Loader users in order to obtain a higher yield, reduce the investment risk in the purchase of a product can not only consider the price factor, but should be weighed against the many ways according to different purposes and spirit of \"good enough, easy to use and get the most comprehensive income \"principle to purchase.
Following from the loaders operating capacity and operating conditions to consider the optional loader should pay attention to Cipian article can help in the purchase of loader loaders users.
1, according to the amount of work to determine the corresponding rated load loader
The loaders users to buy how much load capacity of the loader in order to achieve best value for money, they have the principle of practical enough to determine the amount of work. That is not too large nor too small, too wasteful, too small enough to use.
First of all, for road construction operations and large-scale coal mines, due to the heavy workload, the duty cycle is longer, more spacious working environment, a matching transport machinery load of 10 tons or more, then you should select five tons or 6 tons deadweight loaders, which can improve operational efficiency, reduce construction costs. Like Yutong Heavy 950/951, 50E-1 to 5 tons loaders can meet the requirements, in particular, is worth mentioning that the company recently launched a new 60-digger, with a super breakout force and a large bucket capacity for coal mines and the port is very useful, according to the needs of specific markets and developed a new product. For a relatively small amount of work situations, such as earth, sand, etc. generally choose a load of 3 tons or 4 tons of products, very small amount of work, such as small individual gravel pits, supporting vehic les for small tractor generally choose the 1.5 tons or less of product in order to avoid the loader operating excess capacity, so as to achieve the economic and practical purposes. Necessary to recommend to you here YUTONG 931A, 30E-1 and ZL15 loaders, and Recommend to your 931A loader this loader component commonality level higher, so the maintenance more convenient.
2, according to the operating conditions to determine the appropriate speed loaders
Greater density of ore, solid original soil or the smaller the density of loose material such as soil, coke, etc., due to its working condition is different, the loader choose the same large difference.
For those larger density of the solid original soil, ore and other materials, due to the higher traction (insertion force), should choose the lower working speed, breakout force and tractive larger products to ensure the normal use. 1 loader in YUTONG ZL50E-long wheelbase lengthened frame layout, body structure and stability, breakout force, tipping load for the present with the industry\\ s largest, more than the average factory 1 ton, in particular, suitable for hard earthwork operations.
Because of the loose material loader traction (insertion force) do not ask, you can choose a higher driving problem in order to obtain higher efficiency. To YUTONG ZL50G 950A/951A product for bulk materials, the car speed, high efficiency, is your ideal choice for the above-mentioned conditions.
Due to the different working media, many companies have launched a special product for a particular medium. Yutong Heavy Industries to meet the users under different environmental conditions need to meet the needs of the coal loading operations YUTONG particular the introduction of coal-specific bucket coke special bucket, rock bucket, grab the wood, pushing snow, different working device, and with the different types of loaders, to enable you to achieve the purpose of the use of a machine.

2012年5月15日星期二

Fan start to what precautions are required


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round air diffuser - China Manufacturer
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Fans start to need what precautions you understand? Here we exhaust fan manufacturers to introduce you to.
Before the launch of the blower fan (1) should be fan outlet conditioning damper tightly closed,ceiling diffuser vent to prevent misuse, with a load to launch.
(2) Review of the sleeve bearing smooth oil potential ability to ice heat pipe water supply situation, the coupling could complete overhaul Confucian whether closed.
(3) pay attention to whether the normal launch time and carrier-based DC.
(4) DC table instructions to recover to the shipboard DC conditioning damper opening at the right position.
(5) review of the blower fan operation should be no strange.

On the judgment of the common failures of the hydraulic excavator exclusion


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skid steer attachment - China Manufacturer
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  With the advances in technology, modern excavators generally use the machine - electric - hydraulic integrated control mo de, we exclude some failure to address the multi-engine - hydraulic pump - distribution valves - the matching of the external load. Generally excavators operating in these areas can not match, often expressed as: engine speed decreased, the work slows down, and tap the weak.
    1, the engine speed drop:
    First to test the engine itself, the output power if the engine output power is significantly lower than the rated power, in the case of the construction site, to judge from the easiest way to start the first look at the fuel filter to plug the leak in the fuel path, fuel plunger pump, injector head, the outlet valve of serious wear and tear, open air filter intake with a turbo engine, the turbocharger is damaged, the engine of rapid high-temperature, oil viscosity decreases resulting in the compression cylinder wall closed strictly decreased, whether the cylinder compone nts wear and tear caused by the cylinder serious string gas engine valve closed lax, these are the factors that seriously affect engine power. If you exclude the lack of the engine itself, the output power, we must consider the hydraulic pump flow and the engine output power matching.
    Hydraulic excavators in construction operations, according to the operating load requirements, speed and load (flow and pressure) is inversely proportional to the product of the pump output pressure and flow is a constant pump output power of constant or nearly constant; The pump control system failure, you can not achieve a good engine - pump - valve - the optimal matching of the load in different working conditions area, so that the excavator can not be normal operation, so we must grasp the digging machine control systems of various manufacturers . EPOS system, such as Daewoo, Kato APC system, Komatsu CLSS system, etc.; in dealing with failure, is also simple to compl ex to analyze to confirm. Modern digging machine machine - electric - hydraulic integrated products with high technological content, treatment failure, usually start with the electrical system to start, and then check the hydraulic system, and finally check the mechanical drive system. Check the hydraulic system, the auxiliary oil - oil control - the main oil - control elements gradually checked.
    2, the slow pace of work:
    If the excavator used for many years, the rate gradually slows down, this is normal wear and tear caused. Major factor in the whole ministries wear resulting in decreased engine power and hydraulic system leaks, so that a series of failures are shown, due to leakage caused by the internal energy consumption, resulting in a lot of heat, bringing the system to quickly heat up, the hydraulic oil and engine oil viscosity decline, bringing the system to produce high temperature, the performance of slightly faster c ool car the more heat more slowly, which requires full machine overhaul, repair and replacement parts for wear overrun. New digging machine suddenly slowed, This first simple, complex, check the following aspects: first check the circuit fuse is open or short circuit; pilot pressure is normal; servo control valve - servo piston is stuck; distributor confluence failure; rule out other possibilities, and finally dismantling the hydraulic pump.
    3 excavator weakness:
    The machine is unable to sub-areas:
    First, when the external loads and engine sharp deceleration, which is reflected in the following two aspects:
    According to the aforementioned said first check the engine power
    Check the hydraulic displacement of whether to follow a constant power output. That does not affect the speed of the premise, to adjust the angle of the swash plate to reduce the displacem ent.
    Ministry load large engine does not slow down, and the system speed is normal; it is necessary to debug the system pressure by the manufacturers, the manufacturers of hydraulic components and hydraulic system provided for each hydraulic cylinder pressure, The debugging of the required standards.

2012年5月14日星期一

Car seat belt bolt sealant is considered the correct way


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automatic seat belt - China Manufacturer
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http://www.chinaseatbelt.com/key-automatic-seat-belts-6/



Driver in the ride, there are many precautions, such as the time of the accident can save the lives of the \"security belts\" and \"car headrest. Rest height should be in the ear along when driving a vehicle, our head is generally not leave the headrest, headrest height to head against the headrest, the headrest of the central and head ...
Driver in the ride, there are many precautions, such as the time of the accident can save the lives of the \"security belts\" and \"car headrest.
Rest height on the ear along the
When driving a vehicle, our head is generally not leave the headrest, headrest height to head against the headrest, the headrest of the central and the middle of the head alignment shall prevail. Adjust the position of the car headrest to headrest height adjustment to take the eye or ear, along the position, and the back of the head distance from the car headrest as close as possible, preferably not more than 10 centimeters, which can maximum protection of the safety of the occupants of the neck.
Correct driving position adjustment appears to be simpl e, but it is the basis of safe driving in the event of an emergency situation, the correct driving position and the correct driving position makes you the most quickly to respond. Car headrests provide comfort for the occupants in the event of an accident can better protect the safety of occupants of the neck. For instance, in the event of a rear-end collision, will have a huge impact to the occupants head violently backward, fragile neck in this case it is easy to be injured, or even cause fatal injuries. Car headrest if placed correctly, you can protect occupants in a car accident, to avoid the neck and head hurt.
The seatbelt.com/key-seat-belt-bolts-38/">seat belt bolts shall be coated with a sealant
Many owners believe that wearing a seatbelt is pulled over, wear out \"on the line. In fact, the correct seat belt lacing should be pulled up from the middle of the left shoulder and clavicle, the height must not be lower than the shoulder, preferably higher than 5-10cm.
Maintenance is often overlooked in the daily maintenance of the car, seat belts. Usually the performance of seat belts should be inspected regularly, once the damage should be replaced, all fixed seats, seat belt bolt on the seat next to the floor should be required to tighten the bolts around should be coated with sealant. When the seat belt is dirty, the available soft soapy water for cleaning fluid, scrub with a cloth or sponge.
If your car\\ s seat belt use had to withstand a strong straightened load, even if no damage should be replaced, do not continue to use.

The forklift refers to the information into pallets for loading and unloading


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lift truck attachments - China Manufacturer
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   Forklift accessories into pallets for loading and unloading, stacking and short-distance transport operations wheeled transport vehicles. International Organization for Standardization the ISO/TC110 called industrial vehicles. Are material handling machinery. Widely used in railway stations, ports, airports, factories, warehouses and other national economic sectors, efficient equipment mechanized loading and unloading, stacking and short distance transportation. The self-propelled forklift trucks in 1917. During World War II, the forklift to develop. From the early 1950s, China began manufacturing forklifts.
The selection and configuration of
forklift parts
Choice of models and configurations are generally from the following departure:
1: The job functions
Forklift basic job functions are divided into levels of handling, stacking / pick up, loading / unloading, picking. Initially identified according to job functions from enterprises to achieve the above described models. In addition, special operations capabilities wil l affect the specific configuration of the forklift, such as the handling of paper rolls, hot metal and so on, forklift mounted equipment to complete the special features.
2: Job Requirements
The operational requirements of the forklift pallets or cargo specifications, lifting height, operating channel width, Gradeability general requirements also need to consider the operational efficiency (different models of its efficiency), operating habits (such as the habit of driving seat or Stand) and other requirements.
3: The operating environment
If companies need to transport goods or warehouse environment noise or exhaust emissions and other environmental requirements, in select models and configurations should be considered. If it is cold or in environments with explosion-proof requirements, the configuration of the forklift should be cold storage or explosion-proof. Carefully examine the need to go through the location of forklift operation, it is envisaged that the possible problems, for example, a storage door height of the truck whether it will affect; out of the elevator, lift height and load on the forklift; operating in the upstairs floor bearing meet the corresponding requirements, and so on.
To the forklift supplier in the selection and determine the configuration described in detail the working conditions, and site surveys to ensure that the purchase of the forklift in full compliance with the needs of enterprises. To complete the analysis of the above steps, may still be several models can meet the above requirements. You need to pay attention to the following aspects:
a, different models, the efficiency of the number of forklift drivers are also different number, will lead to a series of cost changes, see this article, performance evaluation part of the discourse about the cost.
b, if the forklift in the warehouse operation, different models of the required channel width, new skills are also differenc es, which will bring the warehouse layout changes, such as cargo storage volume changes.
impact on many aspects of the c, the model number of changes would fleet management.
d, different models of market holdings, its after-sales support capabilities, such as: low driving three-stacker forklifts and high driving three stacking forklift belong to the same narrow channel forklift series, are in a very narrow channel ( 1.5 to 2.0 m) palletizing, pick up. But the former cab can not be improved, thus poor operative field, work efficiency is low. Because the latter can completely cover the functions of the former, and the performance is superior, therefore in the European market sales of the latter than the former in excess of 4 to 5 times, more than six times in China. Thus, most suppliers have focused on the development of high driving forklift to the stacking, and low driving three-stacking forklift use only in small tonnage, lift height (usually less than 6 meters) conditions. Little market sales, after-sales service of the number of engineers, engineers experience, spare parts inventory levels and service capabilities will be relatively weak.
Forklift parts performance criteria
Overall assessment, many companies do not understand the forklift expertise and technology is often the product quality can not make a reasonable judgment. In general, the quality of the forklift and its superior performance is often reflected in the many aspects of high efficiency, low-cost, high reliability, good ergonomics design, and service facilitation.
1), high efficiency
The high efficiency not only means high-speed (driving, to enhance the rate of decline), it also means that the operating duty cycle required to complete a short time, and can always maintain this efficiency in the whole working time. Many factors can promote efficiency:
a: speed of the high and low, such as speed, lif ting and lowering speed;
b: the application of ergonomic design to reduce the number of operating action;
c: the accuracy of the operation;
d: the application of ergonomic design to minimize fatigue;
e: a good field of vision;
2), low-cost
Total cost including purchase and use of forklift required each year to spend
a: the cost of procurement: procurement costs will be amortized to the forklift life. High-priced forklift will be because of their longer life make procurement cost reduction.
b: maintenance costs: the actual maintenance costs, not only the cost of the repair parts, and with the failure rate or failure time. Therefore, a high quality forklifts, due to its low failure rate, its maintenance costs lower.
c: energy costs: energy costs with the different power systems forklift different, such as electricity, diesel, liquefied petroleum gas or gasoline.
d: labor costs: labor costs with the changes in the driver\\ s num ber and their total monthly wage, the driver\\ s number will be reduced for efficient forklift.
3), high security
Forklift safety design, should be able to fully guarantee the safety of the driver, cargo, and forklift. High quality forklift safety design often take into account every detail and every possibility.
4), ergonomic
Ergonomics is a widely used in product design is to improve the operating environment, science, and the purpose is to maximize production efficiency by reducing driver fatigue and increase the means of operating comfort.
In forklift design, ergonomics, in many ways:
: reduce fatigue pilot operation: a unique design can reduce the action of the driver\\ s operation makes the operation more effort;
b: Comfort: user-friendly design enables the driver to maintain a good mood, reduce operational errors;
c: a good field of vision: to provide a good view of the forklift operation process can not only improve efficiency, while ensuring driver safety.
5), easy to maintain
To consider the forklift is easy to maintain. All parts should be replaced, fault diagnosis and rule out faster. The control system of high quality forklifts have been modular, direct laptop connection, the use of diagnostic procedures to quickly find the fault or modify parameter settings (such as speed).

2012年5月13日星期日

The energy-saving lights really save energy? People do not buy it


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led panel lighting - China Manufacturer
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http://www.swinled.com/key-led-panel-lighting-41/


The survey materials before the EU pointed out that the alternative to traditional energy-saving light bulbs, the annual 15

million tons of carbon dioxide emissions. The energy consumption of conventional bulbs, less than 15% used for lighting, the

rest into heat energy; 50% of the energy consumption of energy-saving lamps for lighting. According to expert estimates

Austria, the Austrian family with an incandescent lamp of 66 million, of which 2/3 replaced with energy-saving lamps a year

can save electricity of € 380 million, a decrease of 1 million tons of carbon dioxide emissions.

However, some controversy over the prohibitive energy-saving lamps. 1000 Austrians, according to pollsters survey, 63.8% of

people think that energy-saving lamps to replace the traditional light and not make much sense, only 4.8% of the light bulb

at home all replaced with energy-saving lamps, 24% of people The family had no energy-saving lamps. The reason they do not

have energy-saving lights First, the light quality of traditional light bulbs, energy saving lamps do not have such a soft

light quality; two energy-saving lamps contain toxic mercury and subsequently deal with the problem is relatively complex; is

the energy-saving lamps is a transitional product after a few years will be replaced by LED lighting technology. European

manufacturers now control 95% of the energy-saving lamp market in Europe, they are eager to recover the investment in energy

-saving lamps.

 

2012年5月10日星期四

Forklift generator installation and maintenance instructions


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forklift buckets - China Manufacturer
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http://www.forklift-fork.com/key-forklift-buckets-149/



1, the generator should be installed in the matching engine, the alignment of the two pulley groove center middle of the belt tensioner degree to hand the belt to promote the 10-15MM is appropriate, should be inspected reg ularly in the course of the tight belt inspection and appropriate adjust the appropriate date. - Forklift engine parts
2, the generator output leads for the single wire, negative ground battery ground connection polarity must be consistent, otherwise it would cause the rectifier and voltage regulator burn.
3, the generator field winding since the beginning of anti-leather Ground, outside the Ground regulator grounding type must match.
4, the generator running, do not allow screwdrivers and other metal items will be positive and the chassis or negative short, otherwise it will burn rectifiers. - Forklift engine parts
5, when the engine is started, the charging current from large to small, but there is no discharge phenomenon, indicating that the charging system is normal, do not raise the voltage regulator, otherwise it will damage the battery. After moving fr om the Kai line for some time charging current is very small, or not charging, you should find out the reasons in a timely manner and timely maintenance and troubleshooting.
6, the stator maintenance (with a forklift maintenance), maintenance of the generator rotor rotor should be more flexible, without exception grazing sound job.

2012年5月8日星期二

On the classification and characteristics of the helical gear reducer


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worm gear box - China Manufacturer
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First, the helical gear reducer helical gear reducer is a novel deceleration gear. Using the optimization module combination system of advanced design concepts, with a small, light weight, the transmission torque, steady start, the drive fine score level can be any connection, and the choice of a variety of installation location according to user requirements. The gears are made of high-quality high-strength alloy steel, case hardened to deal with high load capacity, durable.
Second, the helical gear reducer. Involute helical gear reducer gradually opening line helical gear reducer, small size, light weight, high carrying capacity, high efficiency, long life, easy installation, with motor power range wide drive fine score level. It can be widely used in various industries need to slow down on the device. 2, helical gear worm reducer machine helical gear worm reducer with motor directly connected in the form, the structure of a helical gear plus a worm gear. Output axis mounted, with the six basic installation form. Reversible operation of helical gears with hardened, smooth operation, large carrying capacity, the working environment temperature -10 ℃ ~ 40 ℃, the product and similar products with speed range, compact structure, easy installation features. Can be widely used in metallurgy, mining, lifting, light industry, chemical industry, transportation, construction machinery and equipment, the reduction gear. 3, helical gear worm reducer machine helical gear worm reducer with motor directly connected in the form, the structure of a helical gear plus a worm gear. Output axis mounted, with the six basic installation form. Reversible operation of helical gears with hardened, smooth operation, large carrying capacity, the working environment temperature -10 ℃ ~ 40 ℃, the product and similar products with speed range, compact structure, easy installation features. Can be widely used in metallurgy, mining, lifting, light industry, chemical industry, transportation, construction machinery and equipment, the reduction gear.

Gear vibration reducer online monitoring and fault diagnosis


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variator - China Manufacturer
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http://www.torkdrive.com/speed-variator/



The gear transmission is the most commonly used and most importantly, drive mode, in machinery and equipment are widely used in aviation, aerospace, machinery and other industrial sectors. With the extensive use of the gear reducer to high-speed, overloaded and requirements of small vibration, low noise and increased life expectancy and improve the operating environment of the direction of vibration of the gear, especially with the backlash gear vibration problem has gradually become One outstanding problems to be studied in depth. In addition, in order to prevent the gear reducer at work, a sudden accident and extend the life of the gear shaft parts, the need for specific gear reducer device on-line monitoring and intelligent fault diagnosis research.
Chapter II with the side gear clearance and eccentric quality of the gear system (the system is the vibration problem of a nonlinear time-varying systems), a numerical study, results show that: gear operating speed and load the same tooth side of the gap change gear fault vibration frequency has a great influence, and when the side gear clearance increases, the composition of the gear fault vibration frequency is not only an integer multiple o f the mesh frequency, but there are meshing frequency scores of times, which produce sub-harmonic and ultra-harmonics; work also affect the speed of gear vibration failure frequency, when the speed reaches a certain value, the higher the operating speed, the gear fault vibration frequency scores of ingredients, the more obvious; work load amplitude changes also affect the gear vibration fault frequencies light load, the gear fault vibration frequency scores ingredients contained and heavy, the load the greater the fraction composition of the gear fault vibration frequency is more obvious; analysis of the frequency of gear torsional vibration failure, due to the power of the gear teeth coupling must consider the impact of the eccentric quality of the gear.
Chapter III of the fault vibration signal picked up on the gear reducer, the findings show that: by ICP-type accelerometer with piezoelectric sensors and impedance converte r to do the sensor, and thus the output of the sensor for low-impedance voltage, signal transmission distance, good stability, high reliability, acceleration sensor monitoring the use of the gear reducer is recommended; also proposed a strain signal to monitor the gear drive pick up on the bearing outer ring in the gear transmission device within the shaft vibration fault signal components, the method can all reflect the vibration of the shaft parts within the gear train fault signal, this signal analysis of the gear transmission shaft parts for a more correct fault diagnosis.
The fourth chapter of the gear reducer gears shaft component failure vibration frequency formula summarizes the study, and launched a heavy duty gear reducer machines commonly used in aligning roller bearing fault vibration frequency formula; also based on variable The time base technology as the basis of the impact of incenti ve modal analysis method, the deceleration of the chassis cover modal analysis, modal analysis by the deceleration of the chassis cover reducer transmission of accurate fault diagnosis Yang sensor installation position to help.
Chapter from the device characteristics, device failure analysis, equipment monitoring and fault diagnosis principles and monitoring system hardware and software, Tsinghua University, design and research THMDS signal monitoring and fault diagnosis system, the system\\ s main function is to complete a large The key equipment for steel mills vibration, displacement, speed, temperature, current words pickup, amplification, filtering, data acquisition, data processing and data network transmission and on-line long-term monitoring, alarm and intelligent fault diagnosis in a timely manner in the event of abnormal operation and fault.
Sixth start with pattern recognition point of view a more detailed discussion of the application of neural network technology in the diagnosis of large rotating machinery so the chapter, the improved BP algorithm on the speed of network training, the results show that this method can improve the speed of network training 70%. The chapter also studied the fault vibration trend forecasting, modeling and fault vibration trend analysis of stationary time series can be collected relatively simple AR (M),; collected non-level implicit time series can be more practical GM (l, 1) model and AR (M), the combination of modeling and fault vibration trend analysis; neural network ensemble forecasting model can improve forecast accuracy involved in the combination of traditional time series forecasting methods.

Gear vibration reducer online monitoring and fault diagnosis


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variator - China Manufacturer
Thank you for inquiry my variator, Tel:0086 21 37283520, E-MAIL:info@torkdrive.com
http://www.torkdrive.com/speed-variator/



The gear transmission is the most commonly used and most importantly, drive mode, in machinery and equipment are widely used in aviation, aerospace, machinery and other industrial sectors. With the extensive use of the gear reducer to high-speed, overloaded and requirements of small vibration, low noise and increased life expectancy and improve the operating environment of the direction of vibration of the gear, especially with the backlash gear vibration problem has gradually become One outstanding problems to be studied in depth. In addition, in order to prevent the gear reducer at work, a sudden accident and extend the life of the gear shaft parts, the need for specific gear reducer device on-line monitoring and intelligent fault diagnosis research.
Chapter II with the side gear clearance and eccentric quality of the gear system (the system is the vibration problem of a nonlinear time-varying systems), a numerical study, results show that: gear operating speed and load the same tooth side of the gap change gear fault vibration frequency has a great influence, and when the side gear clearance increases, the composition of the gear fault vibration frequency is not only an integer multiple o f the mesh frequency, but there are meshing frequency scores of times, which produce sub-harmonic and ultra-harmonics; work also affect the speed of gear vibration failure frequency, when the speed reaches a certain value, the higher the operating speed, the gear fault vibration frequency scores of ingredients, the more obvious; work load amplitude changes also affect the gear vibration fault frequencies light load, the gear fault vibration frequency scores ingredients contained and heavy, the load the greater the fraction composition of the gear fault vibration frequency is more obvious; analysis of the frequency of gear torsional vibration failure, due to the power of the gear teeth coupling must consider the impact of the eccentric quality of the gear.
Chapter III of the fault vibration signal picked up on the gear reducer, the findings show that: by ICP-type accelerometer with piezoelectric sensors and impedance converte r to do the sensor, and thus the output of the sensor for low-impedance voltage, signal transmission distance, good stability, high reliability, acceleration sensor monitoring the use of the gear reducer is recommended; also proposed a strain signal to monitor the gear drive pick up on the bearing outer ring in the gear transmission device within the shaft vibration fault signal components, the method can all reflect the vibration of the shaft parts within the gear train fault signal, this signal analysis of the gear transmission shaft parts for a more correct fault diagnosis.
The fourth chapter of the gear reducer gears shaft component failure vibration frequency formula summarizes the study, and launched a heavy duty gear reducer machines commonly used in aligning roller bearing fault vibration frequency formula; also based on variable The time base technology as the basis of the impact of incenti ve modal analysis method, the deceleration of the chassis cover modal analysis, modal analysis by the deceleration of the chassis cover reducer transmission of accurate fault diagnosis Yang sensor installation position to help.
Chapter from the device characteristics, device failure analysis, equipment monitoring and fault diagnosis principles and monitoring system hardware and software, Tsinghua University, design and research THMDS signal monitoring and fault diagnosis system, the system\\ s main function is to complete a large The key equipment for steel mills vibration, displacement, speed, temperature, current words pickup, amplification, filtering, data acquisition, data processing and data network transmission and on-line long-term monitoring, alarm and intelligent fault diagnosis in a timely manner in the event of abnormal operation and fault.
Sixth start with pattern recognition point of view a more detailed discussion of the application of neural network technology in the diagnosis of large rotating machinery so the chapter, the improved BP algorithm on the speed of network training, the results show that this method can improve the speed of network training 70%. The chapter also studied the fault vibration trend forecasting, modeling and fault vibration trend analysis of stationary time series can be collected relatively simple AR (M),; collected non-level implicit time series can be more practical GM (l, 1) model and AR (M), the combination of modeling and fault vibration trend analysis; neural network ensemble forecasting model can improve forecast accuracy involved in the combination of traditional time series forecasting methods.

Reducer and transmission equipment such as performance status of the adjustment method


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vertical mill gearbox - China Manufacturer
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http://www.torkdrive.com/vertical-mill-gearbox/



A worm reducer machine spindle fever causes and adjustment method
Common cause of bearing heating
Both the bearings, or sliding bearings, the bearing assembly reasons, the sliding bearing clearance adjustment is too small, the rolling bearing pre-load is too large, it will increase the resistance of the bearing rotation, resulting in bearing heating. Bearing internal reasons, the sliding bearing surface roughness, the shape is not correct, the low precision of the manufacture of rolling bearings, so bearing in the case of low accuracy, high speed, also increases the rotation resistance, the bearing to produce fever phenomenon. Match parts, mainly due to the impact of external forces, resulting in curved spindle box before and after the bearing bore concentricity tolerance, or belt adjustment too tight in the spindle, or spindle installed on the weight of rotating parts manufacturing is not accurate, and under external deformation, the uneven impact of the internal organization, there the focus of the rotation axis of concentricity error is too large, resulting in a large centrifugal force, but also make the bearing by the non-normal force caused bearings fever.
From the work environment, bearing fever, one is poor lubrication conditions. For example, the lubricating oil supply is poor; by adding the amount of grease is not enough; lubricant, not grease the use of grades, not clean. Other protective measures is not good, so that the working environment in the dirt, dust entering the bearing.
(2) bearing the fever generally Remedy
(1) should first check the bearing lubrication conditions are met.
(2) Check the bearing is subjected to large centrifugal force.
(3) Check the bearing clearance is adjusted right.
(4) of the above checks and adjustments, if the bearing is also fever, to consider the demolition of the spindle, check the bearing internal quality problems, and to repair and update.
When the equipment subject to abnormal external forces, or by accidental damage, but also consider the deformation of the spindle and box bearing bore. Check whether the sp indle bending, the rear axle holes are coaxial. Found that the problem must be symptomatic repair.
Reason and judgment, gear reducer gear noise increases
Machinery and equipment gear noise increases, the maintenance of the common mechanical failure. To reduce the gear noise, you must first accurately determine the causes of gear noise increases, to take symptomatic measures to adjust and repair.
A. Gear noise characteristics
(1) in the gear noise frequency, both the gear meshing frequency, but also has its own natural frequency. The former with the drive shaft speed of change in proportion to produce a corresponding change, while the latter has nothing to do with speed. Meshing frequency of gear in rotation by the mandatory continuous impact, is an important part of the gear noise. The inherent frequency of the gear and its structure is closely related.
(2) The continuous impact of the reas ons for gear between the gear itself, if the pitch and shape of the tooth surface there is a big error, the gear can not be evenly meshing rotation, sometimes dramatically accelerated, and sometimes a sharp deceleration, so that the tooth with the collision between the teeth, the tooth under a lot of additional dynamic loads.
Also occur due to external reasons, caused by the phenomenon of impact between the teeth and the tooth, for example, load variations of the transmission link, driveshaft runout rotation and other aspects of the natural frequency of resonance.
(3) in need of repair gear noise, in general, in the overall structure as well as gears, bearings, shaft, cabinet and other parts of the equipment after the calculation and practice on the basis of long-term use produced. Therefore, in need of repair gear noise, and equipment factory noise compared to judgment. Noise increases the phenomenon is not difficult to find, difficult to find the noise source.
2 main factors affect the gear noise increases
(1) gear rotation system of rotating eccentric phenomenon increases.
(2) tooth surface failure in serious condition.
(3) the influence of external vibration source.
Three. Commonly used method to determine the source of gear noise
(1) coated with red lead powder method to judge.
(2) playing table measurements to judge.
(3) Transmission map.
(4) by the intuitive observation, analysis and judgment.
, Deceleration machine parts repair-for-France
The various models reducer model to adjust the gap method and error compensation method, belong to a limited range of adjustment method. Excess of the specification, it will not work. In this case, only the relevant parts for repair or replacement in order to achieve the purpose of the adjustment device accuracy.
Four, with the parts method
(1) slow down the bearing hole in the box of the demolition of bearing too many times, th e aperture is often larger, or by other damage. If not longer use the original bearing bore diameter boring, casement, re-processing, to meet the accuracy requirements of the installation bearing. Boring, it is necessary to take into account the thickness of the casement can not be too thin, in order to enhance the mosaic of firmness, but also take into account the intensity of the box can not have too much weaken.
(2) precision adjustment, and sometimes between the stationary mating surface can be added to the appropriate thickness of shims to adjust with the movement between the surface accuracy.
(3) under the premise has been to clarify the relationship of the drive failure and does not affect part strength, by increasing the locating pins, set screws, the positioning ring and other necessary parts to improve the quality of assembly components to ensure equipment accuracy stability.

2012年5月7日星期一

The gear reducer repair and replacement


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cement mill gearbox - China Manufacturer
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http://www.torkdrive.com/key-cement-mill-gearbox-169/



The gear reducer gear if the following defects shall not continue to use, should be repaired or replaced.
(1) face wear of t he gear pitch circle tooth thickness wear earnings exceed the permissible wear value, to repair or replacement.
Fix: the wear of the tooth surface welding structural steel, eliminate stress after milling and grinding, or welding carbide, and then grinding.
(2) pitting and spalling of gear surface, especially in the pitch near the many small pitting (spalling pits), known as pitting. Severe gear hardness layer of steel is often peeling off in chunks.
Treatment methods: pitting gear is usually the case, you can use, but not overloaded. Serious pitting and spalling, it is necessary replaced with new parts.
(3) gear gluing the contact surface of the gear, due to the instantaneous high temperature melting, the molten material in the tooth surface by the pressure from sliding, plastic attached to its matching tooth surface.
Fix: The viscosity of lubricating oil, strengthen lubrication to prevent overload; cooling, high temperature to prevent the tooth surf ace; the glue of the tooth surface, adhesive attached to the tooth surface of the melt research out, remove the oil residues, the first light load operation, the running-time, check the normal car no problem; if melting serious, plastic deformation is large, it is replaced with new gear.

2012年5月3日星期四

Electric scooter battery life of several factors


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mountain bike - China Manufacturer
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   Frequent use of the electric bicycle or electric scooter friends often have only feeling, its own electric scooter after one year, even if filled with electric battery power drop soon. In the end what causes shorter battery life? Generally have the following price factors. When you understand the reasons for shortened battery life of electric scooter, attention will be able to extend the service life, reduce the number of electric scooter replacement batteries, reducing the use of cost.
   Electric scooter lead-acid battery and charging and discharging process, \"curing\" the effects of battery capacity. Sulfide that is the battery during use due to the electrochemical reaction, the plate will gradually covered the hard lead sulfate crystals, resulting in the active plate area to gradually reduce the acid concentration decreased battery capacity decline.
   Electric scooter in summer and winter battery charging voltage, such as the right to the charger transformer to adjust with the environment, will make the summer battery overcharge dehydration caused by the battery eventually lead to the battery bulge, deformation, or winter charge less mileage decline. The battery charging voltage and ambient temperature is inversely proportional relationship.
   Due to the use and the battery factory compatibility error, such as a variety of factors, the series between the battery voltage is not balanced, the battery capacity will be subject to the minimum voltage that the battery. Battery series by more than one 12V battery made battery factory compatibility error and other factors will make the battery voltage is inconsistent, while the traditional series of constant voltage or constant current charging mode, unable to solve the battery between the voltage imbalance in the final battery capacity will be subject to the impact of low battery voltage, higher capacity battery power will not be able to be released.

Cycloid reducer principles characteristics, use of


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speed variator - China Manufacturer
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Cycloid reducer introduced
Planet cycloid gear reducer can be divided into three parts: input part, slow down part of the output section. Input shaft equipped with a dislocation 180 ° double eccentric , the eccentric sleeve is equipped with two roller bearings, known as the tumbler and the formation of H institutions, two cycloid round center hole is eccentric to put the tumbler bearing the raceway by the needle of a group arranged in a circle on the cycloidal gear and pin gear teeth meshing to form teeth difference within a tooth meshing reduction mechanism, (in order to reduce friction, the speed ratio is small reducer with needle teeth needle teeth sets). When the input shaft with eccentric sleeve for a week, due to the gear cycloidal gear tooth profile of the characteristics of the needle, needle teeth is limited by the movement of cycloidal gear plane motion of both revolution and rotation, the input axis transfected weeks, the eccentric sleeve rotates one cycloidal gear around a tooth in order to get the deceleration in the opposite direction, and then with W output mechanism, the low-speed rotat ion of the cycloidal gear to pass pin to the output shaft. lower output speed.
Cycloid reducer features
1:87 deceleration, more than 90% efficiency, multi-level transmission reduction ratio greater high-speed and high efficiency single-stage transmission can reach.
Compact structure, small size, due to the planetary transmission principle, the input shaft and output shaft in the same center line, which makes the model to obtain the smallest possible size.
Running a smooth and low noise cycloidal-pin gear meshing of teeth more overlap coefficient and has a balancing mechanism, so that the vibration and noise restricted to a minimum.
The use of reliable, long life due to the main parts of high carbon chromium steel, high strength, and by the quenching process (to HRC58 ~ 62), part of the driving touch adopts rolling friction, so long durable life.
Reasonable design, easy maintenance, break down easily installed, a minimum number of parts and simpl e lubrication, cycloid reducer trusted by the user.
Model
1, B series cycloid pin wheel reducer
BW foot standard horizontal biaxial cycloid reducer
BL flange and vertical axis cycloidal-pin wheel speed machine
The BWY end of feet lying installed a dedicated motor direct-coupled cycloid reducer
BLY flange and vertical dedicated motor direct-coupled cycloid reducer
The BWD foot standard horizontal ordinary motor direct-coupled cycloid reducer
BLD flange and vertical common motor direct-coupled cycloid reducer
2, X series cycloid reducer
XW footing standard horizontal biaxial cycloid reducer
XL flange and vertical biaxial cycloid reducer
The XWD foot standard horizontal ordinary motor direct-coupled cycloid reducer
The XLD flange and vertical common motor direct-coupled cycloid reducer
The XWD foot standard horizontal ordinary motor direct-coupled cycloid reducer
XLY flange and vertical dedicated motor d irect-coupled cycloid reducer
Cycloid reducer machine use
Cycloid reducer in accordance with the principle of planetary drive with small teeth difference cycloid pin gear engagement to achieve a mechanical deceleration. The aircraft sub-horizontal, vertical, dual-axis type and direct connection type assembly is the preferred equipment for metallurgy, mining, construction, chemical, textile, light industry and other industries cast iron electrode.
The main features of cycloid reducer
1, the reduction ratio of large, high-efficiency: a drive gear ratio is 9 ~ 87, the two-stage reduction gear ratio, multi-level combination of up to tens of thousands of 121 ~ 5133, and the needle meshing Department of nested rolling friction, mesh surface relative sliding, so the efficiency of a deceleration of 94%.
Smooth operation, low noise: in operation at the same time contact with the teeth on the number of coincidence degree, smooth operation, strong overload capa city, low vibration and noise, noise of a variety of models.
3, the use of reliable, long life: because of the main parts is the use of high-carbon alloy steel quenching treatment (HRC58-62), and then grinding from cycloidal gear and pin sets of teeth meshing pass needle teeth formed rolling friction to pay, friction coefficient is small, so that the engagement without relative sliding, wear a very small, so durable.
4, compact structure, small size: compared with the same power reducer, weight, small size, more than 1/3, the planetary transmission input shaft and output shaft on the same axis, in order to obtain the smallest possible size.

2012年5月2日星期三

Electric bicycle policy run-in period


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mountain bike - China Manufacturer
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bicycles/">electric bicycle has the advantages of convenient, saves time and effort, energy saving and environmental protection, since launch, by the majority of consumers, the electric b icycle industry boomed, however, because of its safety hazards caused by traffic accidents is increasing year by year, The relevant departments of the state in recent years has been considering how the electric bike to strengthen management. The national Ministry of Public Security, Ministry of Industry and Information Technology, Ministry four ministries jointly issued a document in May this year, around the rectification of the electric bicycle industry, weight over 40 kg of \"excessive\" electric bicycle deadline eliminated more than 20 kilometers per hour. Some cities such as Shenzhen, Dongguan, and Changsha, simply banning electric bikes in the main city road.
Four ministries issued a document imposing a deadline for the elimination of excessive electric bike, exceeding the standard is the electric bicycle over 20 kilometers per hou r and weighs over 40 kg, set this standard is developed under the 1999 General Electric Bicycle technical conditions \"(GB17761). Then, come from the quality and technical analysis, this standard would be the electric bicycle industry, what impact it? Electric bicycle enterprises should actively respond to this speed limit weight limit challenge?
Speed: speed limit 20 km
No technical problems
1999 \"General Electric Bicycle technical conditions\" on electric bicycles with the requirements of the many technical indicators, such as the maximum design speed of not more than 20 km; the quality of the vehicle is not more than 40 kilograms; motor output power greater than 240 watts ; time to continue the mileage charge shall be not less than 25 km, one of the most striking is the speed of this four ministries issued a document separate to speed out the ma ximum speed of not more than 20 kilometers of electric bicycles. Why should the speed limit of 20 km? The relevant departments of the answer given is that the electric bike too fast likely to cause traffic accidents.
The Chinese market, most of the electric bike top speed is around 30 km, of course, more than the speed of km, but the number is relatively small.
The speed limit within the 20 km / h, technical manufacturer, of course without any problems, it is very easy to do, the key is how to make consumers aware of the necessity of the speed limit.
Weight: how to reduce excessive weight?
The electric bicycle\\ s speed to slow down is technically no problem, but the weight you want to restrict some trouble in the 40 kg. It is understood that the weight of electric bicycles on the market mostly in kg between the electric bike about 75 kg more common, more than 90 percent of the electric bike weight over 40 kg. How to reduce excessive vehicle weight electr ic bicycle enterprises are facing a problem.
From a structural point of view, electric bicycles by the body and the battery in order to reduce the weight necessary to start from these two areas. First look at the body, the electric bike mostly with steel, the hardness and strength and ductility of the steel is good, but rather heavy, to reduce the weight of steel thinning, thinning, although the weight will reduce, but the quality of difficult to pass the electric bicycle parts breakage, this is unsafe. In fact the new standards will inevitably stimulate corporate research and development of lighter materials, Lifan Technology Co., Ltd. electric vehicle research and development department is responsible for Tan Bo, the real solution to mitigate the body of the electric bicycle is the use of new materials such as aluminum-magnesium alloy instead of The density of steel, aluminum alloy is about one-th ird of the density of steel, the strength is comparable to high-quality steel, in fact, the aluminum alloy has been widely used in high-speed rail carriages and aircraft, use of natural electric bicycles. So in the case of constant volume, a 23 kg of aluminum-magnesium alloy foot can replace nine kilograms of steel, electric bicycle body weight naturally drop down.
Batteries, electric bike mostly use lead-acid batteries, lead-acid battery is a more mature battery, security and storage capacity are good, but a heavy weight, usually about 28 kg, a range of kilometers, if half of the weight loss , the electric bicycle voyage should reduced by half, so a great impact on the use of vehicles, most people use is simply not enough. To lose weight without shortening the voyage, to be replaced a new battery, the lithium battery is a new type of battery, the same volume, its weight is 1/5 of the lead-acid batteries? 1/6.
If the body of the electric bike is replaced by aluminu m alloy, the original lead-acid batteries replaced the lithium battery will decrease the weight of the electric car a lot, should be able to reach the limit of no more than 40 kg, while the performance there will be no change. But there is one drawback is the price of new materials and new batteries are more expensive, Tan Bo, for example, an ordinary electric bicycle price yuan, the use of alloy to reduce weight, the price will rise, which is the rising cost of 300 yuan, while further The use of lithium batteries, the price would go up 500 yuan, on the whole, the new electric car designed to reduce weight, the price will be expensive about $ 1000.
The price the market is not easy to accept. As the electric bicycle market competition, and a variety of components, costs have been transparent, the same types of cars, sold more than 50 yuan will lose their market, so sales of electric bicycles is difficult to ensure the use of new materials.
In order to reduce weight but also to maintain the performance and price constant, the electric bicycle is still a long way to go, but anyway, the use of new materials and new batteries in one direction, the electric bicycle manufacturers can do is continue to strengthen research and development at the same time strive for policy support and subsidies.

Electric bicycles should not be classified as motor vehicle


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Recently, in some places excessive bicycles/">electric bicycles as motor vehicles management, I believe that bicycles/">electric bicycles should not be included in a motor vehicle management.

First, electric bicycles unlike automobiles, motorcycles lethal dangers of having to make motor vehicle management. Electric bike due to the slower, lesser quality, unlike cars and motorcycles with larger mass destruction, even if there is traffic accidents also unlike cars, motorcycles constitute much of a threat to others, often injured is always cycling themselves of mass destruction and hazardous electric bicycles should not be included in the motor vehicle to manage. Once included in the management of motor vehicles, alcohol cycling wine riding drunk riding, especially from drunken driving in the criminal law provisions, the drunk electric car ride facing the situation of the criminal law penalties. Wine electric car ride in the city, the subu rbs or in the countryside to confront this problem does not have the social dangers of cycling behavior and facing criminal law punishment is a bit too much injustice?

Second, energy-saving and environmentally friendly transport products, no need to as a motor vehicle management. Electric bicycles are affordable, ordinary people can afford a convenient means of transport, due to the green on their nature, the use of lightweight, flexible, and more and more the favorite of the masses of ordinary class, especially with the oil supply increasingly scarce and increasing environmental pollution, electric bicycles become the travel choice, it is an inevitable trend of resource-saving and environment-friendly society. Electric bicycles included in the management of motor vehicles, resulting in just the development of electric bicycle industry is facing death in the face.

The third is to increase the burden on the public as a major mode of transport for the gen eral public, motor vehicle management. Ordinary citizens can not afford to buy a car, can not afford riding an ordinary bicycle and time-consuming and laborious, electric bicycles and effort saving time and fuel efficiency has become the inevitable traffic engineering

Tips of the safety of electric vehicle charging points


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Environmental awareness with the public, families to buy electric cars more and more, but the attendant problems, the owners deeply the inconvenience of electric veh icle charging, which to some extent, affected the number of potential buyers. The author for the safety of the electric car charging a few tips:

First, the conditional electricity sector in the residential areas, schools or public places to set up electric car charging stations power supply staff on a regular basis or ad hoc repair and maintenance to improve the safety of electric car charging coefficient. Second, a considerable part of electric vehicle owners, the usual electric cars parked in the corridor of the dwelling unit, here are often the electricity sector linked to the meter box. The electricity sector can be based on the user\\ s application, the power outlet from the user\\ s own meter leads to the corridor, installation of multi-function terminal, you can always charge, of course, you want to install leakage protection or air switch. To avoid the user from the floor above the second floor leads to the power cord, resulting in the hidden dangers of electricity. Third, conditional units can apply for the electricity sector, multi-function socket, or the establishment of charging stations installed in the unit parking spots to the unit of electric vehicles staff travel to provide whatever convenient.