高压非对称齿轮泵设计开发

发布时间：2018-02-16 21:58

本文关键词： 高压齿轮泵非对称结构有限元分析制造工艺性能测试　出处：《山东大学》2012年硕士论文　论文类型：学位论文

【摘要】：高压齿轮泵作为典型的液压动力元件,广泛应用于工程机械液压系统。随着工程机械液压系统向高压化方向发展,工作压力逐步提高至20-25MPa,这就要求进一步提高齿轮泵额定工作压力至25MPa。本文在对国内外同类产品进行详细分析和研究的基础上,结合产品设计制造经验,采用计算机辅助设计(CAD)和计算机辅助工程(CAE)开发了高压非对称齿轮泵。本文首先详细介绍了高压齿轮泵的基本组成和结构原理,提出了一种非对称高压齿轮泵结构,可有效降低从动齿轮受力,从而提高了齿轮泵寿命,并对高压非对称齿轮泵各部分结构、基本尺寸和各组成零件进行了详细的设计和计算。其次采用COSMOSWorks有限元分析软件对高压非对称齿轮泵后盖体零件进行了线性静应力、稳定性以及优化等分析。优化后不但减轻了后盖体零件重量,而且提高了后盖体的安全系数。再次对高压非对称齿轮泵关键零件：齿轮、前盖和后盖体零件的加工工艺进行详细研究和设计,为设计开发的顺利完成以及后续降低齿轮泵制造成本,提高经济效益打下了良好的基础。最后按照液压齿轮泵国家标准规定的试验方法和技术参数要求,对高压非对称齿轮泵试制样机进行了全面的性能测试,验证了设计方案的可行性和齿轮泵各项技术性能指标。
[Abstract]:As a typical hydraulic power component, high-pressure gear pump is widely used in hydraulic system of construction machinery. The working pressure is gradually raised to 20-25 MPA, which requires further raising the rated working pressure of gear pump to 25 MPA. Based on the detailed analysis and study of the similar products at home and abroad, this paper combines the experience of product design and manufacture. The high pressure asymmetrical gear pump is developed by CAD (CAD) and CAE (computer aided engineering). In this paper, the basic composition and structure principle of high pressure gear pump are introduced in detail, and an asymmetrical high pressure gear pump structure is put forward, which can effectively reduce the force of driven gear and improve the service life of gear pump. The structure, basic dimensions and components of high pressure asymmetric gear pump are designed and calculated in detail. Secondly, the linear static stress, stability and optimization of the back cover parts of high pressure asymmetric gear pump are analyzed by COSMOSWorks finite element analysis software. The optimization not only reduces the weight of the back cover part, but also improves the safety factor of the back cover body. The key parts of high pressure asymmetrical gear pump: gear, front cover and rear cover parts are studied and designed in detail, so as to reduce the manufacturing cost of gear pump for the successful completion of design and development. A good foundation has been laid for improving economic efficiency. Finally, according to the test methods and technical parameters of the hydraulic gear pump stipulated by the national standard, a comprehensive performance test was carried out on the prototype of high-pressure asymmetric gear pump, and the feasibility of the design scheme and the technical performance index of the gear pump were verified.
【学位授予单位】：山东大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH325

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