Oriented The Hst Curve Hydraulic Motor Design And Experimental Study

Multi-stroke Low-Speed High-Torque Hydraulic Mortor (LSHTHM) has been an important new product of state since 1998. It was included in the Torch Plan of state in the same year. It is also a key technique in this field. This thesis, beginning with the analysis of HST(Hydrostatic Transmission) device, researched its plane distributing, multi-stroke curve carefully. The final experiment result showed that performance of the LSHTHM accorded with the analysis.The first chapter described the general technical situation of the HST. Its technicalcharacteristic was carefully analyzed and was compared with other transmission techniques. The problems with its application in China were discussed. In the end the significance and the contents of this thesis were presented.in the chapter 2 the components and the requirement to main element werecarefully analyzed. Several main drive schemes were studied. The traits and defects of the high and low velocity of drive schemes were compared according to the requirement of the HST. The structure and theory of the ZJM series hydraulic motor were designed after the latest technical development of the LSHTHM was studied.In the chapter 3, after the multi-stroke plane distributor was designed, pressure fieldof the plane distributor was calculated with FEM. At the same time, the CAD software for it was developed according to the above arithmetic.In the chapter 4, the theory that multi-stroke curve should be designed according tothe functional requirement of the hydraulic motor was posted. In other words, the multi-stoke curve was designed according to the optimization of efficiency and the rotate speed, the stability of the torque were considered at the same time. The PRO/E was used to analyze the its performance and the CAM files were created. The files drived the CNC machine to manufacture the multi-stoke cam.In the chapter 5, the computer aided experiment equipment for hydraulic motor wasintroduced. The hydraulic motor, such as ZJM05, ZJM08, ZJM11, ZJM18, ZJM25, were test on the equipment. The data get from the experiment proved the Tightness of the design.The chapter 6 summed up the work of this thesis briefly.