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研究军用履带车辆无级转向机构核心部件泵-马达系统转向功率的确定问题。基于转向过程相对转向半径及功率流的分析,提出了以预定地面上低挡相应的最小转向半径为计算条件确定转向泵-马达系统功率的方法,调节转向马达至转向零轴间的传动比可以实现预定地面上的中心转向。比较了不同传动比和最小相对转向半径的条件下,泵-马达所需功率的变化情况,在计算示例给定各种条件下,将泵-马达单位功率的变化与传统计算方法进行了比较,结果表明,新方法可减少马达的功率需求平均约为38.8%。同时也对如何实现传动比的调整提出了设想建议,并尽量使整个研究建立在不过分增加结构的复杂性和驾驶员操纵难度的基础上。对转向机构的结构优化设计提供了理论依据。
Research on the determination of the steering power of pump-motor system, the core component of stepless steering mechanism for military tracked vehicles. Based on the analysis of relative steering radius and power flow in steering process, a method of determining the power of the steering pump-motor system based on the minimum steering radius corresponding to the low gear on the ground is proposed. The transmission ratio between steering motor and steering zero shaft can be adjusted Achieve the scheduled center of the ground turn. Comparing the changes of required power of pump-motor under different transmission ratios and minimum relative turning radius, the change of unit power of pump-motor was compared with the traditional calculation method under various conditions given in the calculation examples. The results show that the new method can reduce the power requirements of the motor on average about 38.8%. At the same time, some suggestions on how to adjust the transmission ratio are put forward, and the whole study should be based on the complexity of the structure and the difficulty of the driver’s manipulation. The structure of the steering mechanism optimization design provides a theoretical basis.