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目前,在前端式装载机、大型车辆及其它自行式矿山和工程机械上广泛地采用了液压传动的铰接转向方式。与传统的阿克曼式转向相较,铰接转向具有转弯半径小、机动性好及牵引力大等优点。但其惯性作用大,所以响应时间、转向精度及稳定性即成为不容忽视的问题。本文对铰接转向的液压系统进行了理论分析,并导出其基本属于三阶系统,从而讨论了稳定性、响应时间与其它诸参数的关系。所得结论与生产实践中采取的一些措施相吻合,对进一步提高液压铰接转向的性能将有所裨益。
Hydrodynamic articulated steering is now widely used in front-end loaders, large vehicles and other self-propelled mines and construction machinery. Compared with the traditional Ackerman steering, articulated steering has the advantages of small turning radius, good maneuverability and large traction force. However, its inertial effect, so the response time, steering accuracy and stability that has become a problem that can not be ignored. In this paper, the hydraulic system of the hinging steering is theoretically analyzed, and the basic third-order system is derived, so the relationship between stability and response time and other parameters is discussed. The conclusions obtained are in line with some of the measures taken in production practice, which will be beneficial to further improve the performance of hydraulic hitch steering.