The Function and Principle of Steering System

The function of the steering system

The function of the forklift steering system is to change the direction of travel of the forklift or to keep the forklift moving in a straight line. Steering system according to the energy used for steering.

It is divided into two categories: mechanical steering system (human steering system) and power steering system. The mechanical steering system completely relies on the physical energy of the driver (operator) to control the steering and overcome the steering resistance torque. In the power steering system, the energy consumed to overcome the steering resistance torque is provided by the prime mover, and the driver (operator) only manipulates the system with a small force to control the steering.

Due to the narrow working site and driving channel of the forklift, the reversing is frequent during operation, and it is often necessary to turn with a minimum radius. Therefore, the steering system is required to work reliably and operate easily. When the forklift is empty, the load of the steering axle accounts for about 60% of the weight of the vehicle, which is in order to reduce the labor intensity of the driver (operator), forklifts with a lifting capacity of more than 2t tend to use power steering (hydraulic motor power steering). Steering or full hydraulic steering). The power steering is compact in structure, light in operation and sensitive in action, which is conducive to improving the working efficiency of the forklift. The oil can also buffer the impact of the ground on the steering system. At present, the main models of forklift trucks all adopt full hydraulic power steering system(drive system parts).

How does steering system work?

When the forklift is turning, the driver (operator) applies a steering torque on the steering wheel (steering control mechanism), which causes the steering wheel to generate rotational displacement and transmit it to the steering gear through the steering shaft. According to the rotation angle of the steering wheel, the steering gear transfers the pressure oil from the shunt network to the steering cylinder(cylinder head) through the pipeline, and then drives the steering wheel through the steering trapezoid to realize the steering.

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