The Function and Composition of the Travel System

1. Function

The traveling system bears the full gravity of the forklift and the vertical reaction force of the road surface acting on the front and rear wheels. The driving torque transmitted by the engine to the driving wheel through the transmission parts forms the traction force acting on the edge of the driving wheel through the adhesion between the tire and the ground.

When the forklift travels at a constant speed, part of the traction force is used to overcome the rolling resistance of the driving wheel, and most of the rest is transmitted to the frame through the drive axle and rear suspension. Suspension passed to

The steering axle acts on the center of the steering wheel so that the steering wheel rolls forward against the rolling resistance so that the entire forklift moves forward.

In the same way, the braking force when the forklift is braking, the lateral force when walking on a curve or a lateral ramp, and the impact force on the wheels on the uneven road is also borne and transmitted by the walking system.

It can be seen that the functions of the forklift travel system parts are: to bear the total gravity of the forklift; convert the driving force into traction; withstand and transmit various reaction forces acting on the wheels by the road surface; ease the impact, reduce the vibration, and ensure the smooth running of the forklift.

2. Composition

The driving system of a forklift generally consists of an axle, a frame, a wheel, and a suspension.

Axle

The function and classification of the axle The wheels are installed at both ends of the axle and are supported on the ground; the axle is connected to the frame through the suspension to support the frame and transmit force between the wheels and the frame.

According to the front and rear positions of the installation, the axles can be divided into front axles and rear axles; according to the types of wheels installed, they can be divided into drive axles (drive wheels are installed at the bridge end), steering axles (steering wheels are installed at the bridge end), and steering drive axles ( The axle-end wheels can both steer and drive) and support the axle (the axle-end wheels only play a supporting role). As a component of the running system, the drive axle only refers to its axle housing. Steering drive axles are used for off-road forklifts, and support axles are used for unpowered trailers.

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