Rear axle turning integrated valve set and turning device

Abstract

The invention provides a rear axle turning integrated valve set and a turning device therefore. The rear axle turning integrated valve set is characterized in that a valve body is of a cubic structure and comprises six surfaces; two balancing valves, four two-position two-way solenoid valves and two-position three-way solenoid valves and a one-way valve are positioned on the first surface; four ports, namely, a third port, a fourth port, a fifth port and a sixth port, are positioned on the second surface which is vertically connected to the first surface; a first port and a second port are formed in a third surface which is connected to the first surface and the second surface; the fourth surface and the third surface are opposite to each other; and a three-position four-way proportional reversing valve is positioned in the middle of the fourth surface. According to the rear axle turning integrated valve set adopting the abovementioned structure arrangement, the structure arrangement is reasonable; processing is easily carried out; a small space is occupied; an oil channel is reasonable; the pressure loss is small; pipes are conveniently arranged; each control valve is convenient to adjust and operate; the three-position four-way proportional valve is additionally mounted, so that the opening degree of a valve element can be accurately controlled, and as a result, a rear axle turning hydraulic cylinder can be accurately controlled to telescope as a target displaces, and the closed-loop control in operation of the turning hydraulic cylinder and a steering plate operation is achieved.

Description

technical field [0001] The patent of the invention relates to a high-reliability electromechanical-hydraulic all-wheel steering system suitable for wheeled vehicles, which belongs to the fields of mechanical, hydraulic and motor vehicle applications. Background technique [0002] Wheeled equipment is an important part of the army's weapon equipment system, and it is an important land mobile platform for the land, sea and air forces to realize the development strategy of "global mobility, three-dimensional protection, multi-dimensional and multi-energy". Vehicle mobility, broadly speaking, refers to the ability to quickly reach space and regions, including tactical mobility and strategic / combat mobility. For wheeled vehicles, the improvement of mobility is more focused on improving soft ground and random off-road ground. Passing ability, plateau and mountain driving performance, air transport performance, etc. The essence of the wheeled vehicle steering system is based on th...

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Problems solved by technology

[0004] (2) Compared with engineering vehicles, wheeled vehicles have more complex working conditions and harsher environments. The response characteristics and impact resistance of the follow-up steering axle are common issues that affect vehicle handling stability and safety.

[0006] From the above comparison, the variable vehicle structure, complex application environment, and harsh service conditions of wheeled vehicles have brought great challenges to the reliable application of all-wheel steering technology on wheeled vehicles. The technical framework of the all-wheel steering system of engineering vehicles cannot meet the requirements of use. Therefore, it can simultaneously have the dynamic response and impact resistance of the follow-up steering axle in complex environments, and the median steering stiffness of the follow-up steering axle under nonlinear loads and The all-wheel steering system with the three core capabilities of the active return of the follow-up steering axle under the condition of system failure and vehicle damage will become a high-reliability all-wheel steering system suitable for wheeled vehicles

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