面向HST内曲线液压马达的设计和实验研究

【作者】 尤新荣；

【导师】 蒋晓夏；

【作者基本信息】 浙江大学 ， 机械电子工程， 2002， 硕士

【摘要】 行走机械静液压驱动装置(Hydrostatic Transmission简称HST)在欧、美工业技术发达国家已广泛推广应用，采用HST技术已成为现代工程机械、农机、起重运输机械和许多民用特种车辆的一个重要标志。国外农机和工程机械等行走机械配套所用液压产品的销售额，已占液压总销售额的40％以上，这与应用静液压驱动和负荷传感调节技术密切相关，也是其他传动方式在行走机械中难以取代的结果。而我国的行走机械技术总体上与国际先进水平尚有相当大的差距，HST这一新技术的应用和推广将有一段很长的路要走。目前，行走机械HST装置主要依靠进口，在比较适合于HST装置的低速大扭矩液压马达领域更是薄弱，为此研究开发面向静液压驱动的低速大扭矩液压马达就显得十分重要。 面向HST的内曲线低速大扭矩ZJM系列液压马达是1998年国家重点新产品，同年被列入国家火炬计划，也是液压行业重点攻关的关键技术之一。本文从HST装置的功能要求出发研究开发的ZJM系列液压马达，现已小批量生产，部分替代进口，已引起广泛的注意和重视。 第一章阐述了HST装置的技术发展概况，研究分析了HST技术的特点、对比分析了HST技术与其他传动技术的优缺点，进一步分析了国内在应用HST技术存在的问题，从而提出了本论文选题的意义。 第二章详细分析了HST装置主要元件的选用要求，对ZJM系列液压马达提出了自己的设计方案，进行了结构和原理设计。 第三章在初步设计计算内曲线端面配流盘的基础上，采用流体有限元方法精确计算分析了端面配流盘的压力流场，同时根据上述算法开发了端面配流盘计算机辅助设计软件。 第四章在内曲线液压马达定子曲线的设计计算中，首次提出了按效率优化的原则设计曲线的理念，结合转速、扭矩无脉动、等接触应力设计理论等研究成果，采用美国参数技术公司的PRO/E软件的MOTION分析模块进行CAE分析，并且生成计算机辅助加工(CAM)文件，直接驱动CNC加工机床进行定子曲线的加工，获得了十分理想的结果。 第五章介绍了由我主持搭建的液压马达的功率回收实验台，采用计算机辅助测试来处理实验数据，并对ZJM05，ZJM08，ZJM11，ZJM18，ZJM25五种规格液压马达进行了测试，取得了良好的性能，从而验证了端面配流、定子曲线设计算法的合理性。 第六章对本文的研究工作进行了简要的总结。更多还原

【Abstract】 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.更多还原