Steering rear lift shaft

Abstract

The invention provides a steering rear lift shaft, which comprises a supporting shaft assembly, a master pin, a stop screw, a hub assembly, a steering knuckle arm, an oil cylinder support, a steering tie rod arm and a tie rod assembly, wherein the supporting shaft assembly is formed by welding a supporting shaft and a support assembly; the hub assembly is assembled in the supporting shaft assembly through the master pin; the master pin and the supporting shaft are locked to be limited by the stop screw; the steering knuckle arm is fixedly arranged on the hub assembly through a bolt; the steering oil cylinder support is fixedly arranged on the supporting shaft assembly through the bolt; the tie rod assembly is connected onto the hub assembly through the tie rod arm. Through the installation, the rear lift shaft is connected with an automobile lift air bag through the support assembly, and the goals that the steering rear lift shaft can be lifted at idle load, and the steering rear lift shaft is lowered at full load to play a role in bearing are finally achieved; meanwhile, under the road condition that the turning radius is smaller, steering is controlled by a steering control mechanism, and the flexibility of the whole automobile is improved.

Description

technical field [0001] The invention relates to the field of auto parts, in particular to a lifting shaft after steering. Background technique [0002] With the needs of social development, road trucks have higher and higher requirements on vehicle cost and fuel economy. At the same time, domestic multi-axle trucks have problems such as turning difficulties due to their long body and large turning radius. In order to meet the needs of urban logistics transportation and achieve higher fuel economy when the vehicle is empty, the lifting shaft structure is generally adopted abroad. [0003] Patent Publication No. CN200420096864 discloses a follow-up steering axle assembly, including two shock absorbers, a return spring, and a return spring seat. This structure relies on the compression and elongation of the return spring itself to achieve follow-up Steering. However, follow-up steering cannot realize active steering, and has no effect on the outer radius of the vehicle. At th...

AI Technical Summary

Problems solved by technology

However, follow-up steering cannot realize active steering, and has no effect on the outer radius of the vehicle. At the same time, due to follow-up steering, it will accelerate tire wear

[0004] In addition, most of the lifting shaft structures currently used are follow-up steering structures, which will cause a lot of inconvenience to traffic due to the long body and large turning radius of multi-axle trucks, and at the same time cause excessive wear and tear on the tires.

Most of the supporting shafts are mainly welded with round or square tubes, which have disadvantages such as low bending and torsional strength, weak bearing capacity of the whole bridge, and poor reliability.

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