Steering cylinder with neutral position locking function and control system

Abstract

The invention discloses a steering cylinder with a neutral position locking function and a control system. The steering cylinder with the neutral position locking function comprises a cylinder barrel, a cylinder sleeve type piston which is supported in the cylinder barrel and extends out of the cylinder barrel along one side of the cylinder barrel, and a double-acting piston rod which is supported in the cylinder sleeve type piston and penetrates through the cylinder sleeve type piston, and the two ends of the double-acting piston rod extend out of the cylinder barrel respectively; the steering cylinder further comprises a first oil duct, a second oil duct, a third oil duct and a fourth oil duct, the first oil duct is arranged on the cylinder barrel and communicated with the first steering cavity, the second oil duct is arranged on the cylinder barrel and communicated with the second steering cavity, the third oil duct is arranged on the double-acting piston rod and communicated with the first inner cavity, and the fourth oil duct is arranged on the double-acting piston rod and communicated with the second inner cavity. According to the steering cylinder with the neutral position locking function, the process can be simplified, the production cost can be reduced, locking errors can be reduced, and precision can be improved; meanwhile, when the neutral position is locked, locking is not needed after position detection, one-key locking and unlocking operation can be achieved, locking is reliable, and operation is easy and convenient.

Description

technical field [0001] The invention relates to the technical field of engineering vehicles, in particular to a steering cylinder with neutral locking. The invention also relates to a control system with the steering cylinder with neutral locking. Background technique [0002] Multi-axle steering technology has always been a hot spot in the field of engineering technology. For multi-axle steering vehicles, multi-axle steering and special steering modes are realized when driving at low speeds (even the vehicle is equipped with a safety alarm, and multi-axle steering operations are not allowed for overspeeding), while when driving at high speeds, the rear wheels maintain Centering and locking is critical for safety. Compared with multi-wheel steering at low speed, rear axle locking technology is also necessary at high speed, because at high speed, a slight flick of the rear axle will cause the vehicle to lose control. Therefore, an important guarantee for multi-axle steering...

AI Technical Summary

Problems solved by technology

However, when performing neutral locking, it is necessary to perform position detection and then lock, and the operation is cumbersome; at the same time, the above-mentioned neutral locking is locked by the sealed hydraulic oil in chambers A and B. At the moment of locking, chambers A and B are not equal. Pressure, that is, after locking, the actual oil cylinder fluctuates slightly left and right, resulting in poor locking accuracy and locking reliability

[0004] Therefore, how to avoid the cumbersome locking operation of the existing double-acting steering cylinder and the poor locking accuracy and locking reliability are technical problems currently to be solved by those skilled in the art.

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