Rear axle steering hydraulic cylinder assembly and steering system

Abstract

The invention provides a rear axle steering hydraulic cylinder assembly which comprises a cylinder barrel, a piston rod, a ball pin, a hoop and an oil cylinder displacement sensor and is provided witha first connector and a second connector which are connected with a fifth connector and a sixth connector of a rear axle steering integrated valve bank through oil pipes respectively. An oil cylinderdisplacement sensor (35) is mounted in the cylinder barrel; one end of a rear axle steering hydraulic cylinder assembly (6) is connected with a vehicle body auxiliary seat through a knuckle bearing;the other end is connected with a left swing arm (70) of a rear axle steering rod system (10) through a ball head (36) so that the rear axle steering hydraulic cylinder assembly (6) is fixed; and thefirst connector (34) of an oil way on an upper portion of the rear axle steering hydraulic cylinder assembly (6) is connected with the fifth connector (8-A) of the rear axle steering integrated valvebank (8), and the second connector (33) of the oil way on the upper portion of the rear axle steering hydraulic cylinder assembly (6) is connected with the sixth connector (8-B) of the rear axle steering integrated valve bank (8). Stretching and retracting of the rear axle steering hydraulic cylinder along with target displacement can be accurately controlled, and closed-loop control of the steering hydraulic cylinder and steering wheel control 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...

AI Technical Summary

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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