热管式磁流变传动装置的设计与试验

Design and Experiment for Magnetorheological Transmission Device with Heat Pipes

磁流变传动装置(Magnetorheological transmission device,MRTD)是一种性能优良的新型智能传动器件。设计一种采用磁流变液作为传动介质、利用整体针翅回转热管进行散热的新型热管式磁流变传动装置,研制传动装置样机并对其进行试验测试。结果表明,磁流变传动装置传递的转矩可以通过调节励磁电流来控制;装置传递的转矩基本不随滑差转速的改变而改变,具有良好的恒转矩特性;整体针翅回转热管能有效地对传动装置进行散热,且散热能力随转速的提高而增大,为解决传动装置的发热问题提供一种有效手段。

Magnetorheological transmission device（MRTD） is a new type of intelligent transmission device with excellent performances. A new MRTD with heat pipes is designed. In this type of device, the MR fluid is taken as the torque transmission medium and the pin-fin heat pipes rotating with driving shaft are used as the heat-sinking tool. A prototype of MRTD with heat pipes is manufactured and its experiments are done. The results reveal that the transfer torque of MRTD can be controlled by adjusting the exciting electric current. MRTD has a good constant-torque performance and its transfer torque almost maintains a constant value with variation of slipping speed. The pin-fin heat pipe can cool the MRTD effectively and its heat-sinking capability improves with increasing of rotating speed, thus providing an effective method for solving the heating problem of transmission device.