二维柱塞泵联轴器异常磨损产生机理研究

Abnormality Abrasion of Two-dimensional Piston Pump Connect Shaft

二维柱塞泵是一种新型柱塞泵,具有结构紧凑及转速高的特点。在试验过程中,联轴器出现了十分严重的异常磨损,为解决这一问题,对泵芯组件进行受力分析,得出联轴器异常磨损发生的原因,并提出避免磨损的理论依据(简称:磨损判据)。对二维导轨的设计方程进行推导,得出在满足磨损判据下的二维柱塞泵输出压力与输入转速的关系方程。在该关系方程基础上提出二维柱塞泵使用工况边界条件,参考相应标准设计二维柱塞泵试验方案,并进行试验验证。试验结果表明:联轴器未再出现异常磨损,证明了研究提出的二维柱塞泵使用工况边界条件的合理性,能够避免联轴器异常磨损的发生。

A two-dimensional piston pump has the characters of compact structure and high revolving speed.During the test,the connect shaft appeared abnormality abrasion.To solving this problem,a force analysis of pump core is conducted.The reason why this abrasion happened is found.A theoretical gist(abbreviation:abrasion criterion)to avoid abnormality abrasion is promoted.According to the design equation of two-dimensional cam,the relationship equation between output pressure and input revolving speed is elicited,under the request of abrasion criterion.A boundary conditions of use conditions is putted forward in the base of the relationship equation.A experiment is designed with the test method and some relevant national standard to verify whether the test method is feasible.It is clarified that the connect shaft's abnormality abrasion is gone.And the boundary conditions of use conditions is useful for a two-dimensional piston pump,it can avoid connect shaft's abnormality abrasion.