液压泵空载排量测定方法的探讨

Discussion on Measurement Method of Noload Displacement of Hydraulic Pump

本文针对现有GD7936-87及GB/T 7936-2012空载排量测定方法中空载排量测试误差较大、不能反映液压泵在整个工作范围内的空载排量特性的问题加以分析,提出了一种新的空载排量测试方法:多转速零压力截取法,并进行了试验和比较分析。试验结果表明,该方法测得的空载排量值具有较高精度,能代表液压泵在整个工作范围内的空载排量特性,对相关从业人员进行空载排量测定具有较大的参考意义。

This paper presents a new method for measuring the no-load displacement of hydraulic pump,named multi-speed and zero pressure intercept method,in order to solve the problem that the existing methods from GD7936-87 and GB/T 7936-2012 have large error and cannot reflect the characteristics of the no-load displacement characteristics of hydraulic pump in the whole working range. Experiments are made according to this method,and experimental data are compared and analyzed. The test results show that the no-load displacement value measured by this method has high accuracy and can represent the no-load displacement characteristics of hydraulic pumps in the whole working range. It has great reference significance for relevant practitioners to measure the no-load displacement.