设计了一种用于联合收割机行走底盘变速箱模拟加载的试验台,该试验台采用变频调速电机作为动力源,磁粉制动器与减速器组合作为加载器,工控机通过模拟量输入输出卡控制磁粉制动器加载扭矩的大小,加载扭矩和转速通过扭矩转速传感器测量,并实时显示在工控机上。该试验台可实现复杂工况的编程与自动加载试验。 A test rig for simulative loading of the chassis of a combine harvester is designed. The test rig adopts a variable frequency speed control motor as the power source, a combination of the magnetic powder brake and the decelerator as the loader, and the industrial computer through the analog input and output card control Magnetic powder brake load torque size, load torque and speed measured by the torque sensor, and real-time display on the IPC. The test bench can be programmed to achieve complex conditions and automatic loading test.