What are the composition and working principles of the important parts of the electric pallet truck?

As the main handling tool in the warehousing industry, the importance of electric pallet trucks for an enterprise is self-evident, so for electric pallet trucks, its important components are what?

The operation of the electric pallet truck is inseparable from the battery. The battery provides the energy source, so what provides the power source? Yes, the motor. Let's talk about the composition and working principle of the motor, one of the important components of the electric pallet truck.

The full English name of the electric pallet truck steering motor is Electronic Power Steering, EPS for short, which uses the power generated by the electric pallet truck motor to assist the driver in power steering. The composition of EPS, although the structural components of different pallet trucks are different, they are generally the same. Generally, it is composed of pallet truck direction (steering) sensor, electronic control unit, motor, reducer, mechanical steering gear, and battery power supply and other pallet truck accessories.

The working principle of the steering motor of the electric pallet truck: When the pallet truck is turning, the direction (steering) sensor will 'feel' and transmit a signal to the control unit of the steering wheel to distribute the current to the steering motor to turn the direction, These signals will be sent to the electronic control unit through the data bus, and the electronic control unit will send action commands to the motor controller of the pallet truck according to the data signals such as the transmission torque and the direction of rotation, so that the motor of the pallet truck will be based on the specific needs. A corresponding amount of torque is output, resulting in power steering. If it is not turned, the system will not work and will be in a standby (sleep) state waiting to be called. Due to the working characteristics of the electric power steering, the pallet truck driver will feel a better sense of direction and lighter weight when driving such a pallet truck. At the same time, because it does not work when it does not turn, it saves energy consumption to a certain extent.

Because the electric power steering system of the pallet truck only needs electricity and no hydraulic pressure, many components are omitted compared with the mechanical hydraulic power steering system. There are no oil pumps, oil pipes, pressure flow control valves, oil storage tanks, etc. required by the hydraulic system. The pallet truck has a small number of accessories, convenient layout and light weight. And no 'parasitic losses' and liquid leakage losses. Therefore, the electric power steering system can save energy by about 80% under various driving conditions, which improves the running performance of the whole electric pallet truck accessories. Therefore, it has been rapidly promoted in recent years, and it is also the development direction of the power steering system in the future.

In order to ensure the lightness of the pallet truck when it is turned in place or at low speed, the displacement of the oil pump is determined by the flow rate of the pallet truck engine at idle speed. However, most of the time when the pallet truck is running at a speed higher than the idle speed and in a straight line, it can only return most of the oil output by the oil pump to the oil storage tank through the control valve, causing great 'parasitic losses'. Therefore, in order to reduce such unnecessary losses, a motor-driven oil pump is used. When the electric pallet truck drives straight, the motor runs at a low speed, and when the pallet truck turns, the motor runs at a high speed. The flow and pressure of the oil pump are adjusted by controlling the speed of the pallet truck motor. , reducing 'parasitic losses'.

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