液力缓速器转子端面制动力矩传递方案优化分析

Optimization Analysis of Endface Braking Torque Transmission Scheme for the Hydraulic Retarder Rotor

为解决缓速器转子与空心轴不能一体化铸造时的连接问题,文章讨论了液力缓速器转子和空心轴不同端面制动力矩传递方案的可行性,采用Abaqus软件进行优化分析,针对仿真最优结果进行零部件试制,并开展缓速器疲劳试验验证。分析表明,液力缓速器转子和空心轴之间存在较大的制动力矩传递现象,并非单纯机械部件连接问题。在装配空间受限的情况下,为保证连接可靠,端面齿、圆柱销和螺栓配合的方案可作为一种端面制动力矩传递方式进行使用。增加端面齿数、增大齿根和齿顶倒圆角可显著提高配合结构传递制动力矩的能力,降低零部件应力,提高零部件使用寿命。

In order to solve the connection problem when the retarder rotor and hollow shaft cannot be integrally cast, the feasibility of different endface braking torque transmission schemes for the hydraulic retarder rotor and hollow shaft is discussed in this paper. The Abaqus software is used for structural optimization. According to the simulation optimal results, the parts are trialmanufactured,and the retarder fatigue test is carried out to verify. The analysis shows that there is a braking torque transmission between the hydraulic retarder rotor and the hollow shaft, which is not just a mechanical component connection problem. In the case of limited assembly space, the scheme of endface gear,cylindrical pins and bolts can be used as an endface braking torque transmission scheme to ensure reliable connection. Increasing the number of endface gear, increasing the gear root and gear top chamfering can significantly improve the ability of the mating structure to transmit the braking torque, reduce the stress on the parts, and improve the service life of the parts.