重型汽车双驱动桥试验台研制

Development of Dual Drive Axles Testbed for Heavy-duty Vehicles

试验台采用5台电机作为动力,可满足630 kW以内的车辆传动部件的试验,可以进行与车辆实际使用状况一致的中后桥并行试验,也可以按传统试验方法对中后桥分别进行试验,还可以按载荷谱进行试验。对驱动桥、变速器等各类试验的组合匹配进行了研究,开放了多种测控参量,便于新试验项目的开发。充分考虑了操控的方便性和安全性,采用了安全的加载方式和先减速后减载的快停方法,尽可能地避免了因突然失载造成失控的可能性。通过了对平地机驱动桥、中后桥、轨道交通齿轮箱、汽车变速器的试验。试验结果表明,该系统具有转速转矩控制精度高、响应快、抗干扰能力强的特点。

The proposed testbed is powered by 5 motors,which can satisfy the requirements of testing vehicle transmission components within 630 kW.The testbed can carry out the parallel experiments on the intermediate and rear axles which are consistent with the actual conditions of the vehicle.The experiments on the intermediate and rear axles can also be separately carried out according to the traditional test method.The experimental combination matching of drive axles and transmissions was studied,and various measurement and control parameters were analyzed to facilitate the development of new test projects.The convenience and safety of manipulation were fully considered.The safe loading method and the quick stopping method were adopted to reduce the odds of abrupt failure as much as possible.The test can also be carried out according to the load spectrum.Through the tests on the drive axle,the intermediate and rear axles,the rail transit gearbox and transmission,the experimental results proves the system characteristics of high accuracy of speed and torque control,fast response and strong anti-interference ability.