Since the forklift engine assembly cannot be reversed, the forward and backward motion of the forklift is also solved by the transmission. The main role of the forklift gearbox is to adapt to the vehicle starting under various road conditions, accelerating climbing and driving at high speed on the road, the forklift Transmission will transform the engine output torque and speed in it to adapt to the driving requirements. In addition, the gearbox can also cut off the operation of the engine and the drive system from each other for a long time.