A steering return locking mechanism assembly and its steering system
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A locking mechanism and assembly technology, applied in steering mechanism, fluid steering mechanism, power steering mechanism, etc., can solve the problem that the response characteristics and impact resistance of the follow-up steering axle affect vehicle handling stability, safety, and complex working conditions. , complex application environment, etc.
Inactive Publication Date: 2020-08-18
CHINA NORTH VEHICLE RES INST
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[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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[0081] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0082] In this article, if there is no special explanation, when it comes to formulas, " / " means division, and "×" and "*" mean multiplication.
[0083] In order to solve the problems in the prior art, the present invention provides a high-reliability electromechanical hydraulic all-wheel steering system and its rear axle self-aligning and locking device, especially a 4X4 electromechanical hydraulic all-wheel steering system. The all-wheel steering device of the system adopts hydraulic power-assisted mechanical steering on the front axle, and the rear axle uses an electronically controlled hydraulic cylinder to drive the steering of the rear axle. As a preference, the high-reliability 4X4 electromechanical-hydraulic all-wheel steering system and its rear axle passive self-aligning and locking device are suitable for wheeled vehicles of mor...
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Abstract
The invention provides a steering return locking mechanism assembly, which includes an unlocking oil cylinder, an unlocking spring, a return spring, a mechanical lock assembly, a rotating pin, a return cylinder, a telescopic cylinder, Telescopic shaft, left support fixing nut, left spring support assembly, right spring support assembly, retaining ring between cylinders, pin shaft, unlocking spring support, unlocking cylinder upper bracket, unlocking cylinder lower bracket, ball pin , lock sensor, unlock sensor. The present invention has developed a brand-new steering return locking mechanism assembly, which can complete the follow-up expansion and contraction with the rear axle steering hydraulic cylinder when the rear axle is turning normally; when the rear axle is not turning, it can keep the steering rod of the rear axle in the middle The position is mechanically maintained and rigidly locked; when the all-wheel steering system has an electrical or hydraulic failure, it can realize passive active return and complete rigid lock, which greatly improves the reliability of the whole set of all-wheel steering device.
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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