Hydraulic pump and hydraulic motor reliability testing device based on power recovery technology

Abstract

The invention discloses a hydraulic pump and hydraulic motor reliability testing device based on a power recovery technology. A first shaft extension of a double-extension-bar motor of the testing device is connected with a first hydraulic pump through a first torque tachometer, and a second shaft extension of the double-extension-bar motor is connected with a second hydraulic motor; the second torque tachometer is connected with a first hydraulic motor and a second hydraulic pump, a pressure oil mouth of the first hydraulic pump is connected with an oil inlet of the first hydraulic motor, and a pressure oil mouth of the second hydraulic pump is connected with two hydraulic oil pipelines; the first hydraulic oil pipeline is connected with an electromagnetic spill valve and a remote pressure regulating valve and connected with an oil tank through a flowmeter, and the second hydraulic oil pipeline is connected with an oil inlet of the second hydraulic motor. By establishing the samples of the two tested hydraulic pumps and the samples of the two tested hydraulic motors through the double-extension-bar motor, energy is saved while testing efficiency is greatly improved; the hydraulic pump and hydraulic motor reliability testing device based on the power recovery technology further has the advantages of simple operation and easy popularization.

Description

technical field [0001] The invention relates to a test device for detecting reliability indexes of hydraulic pumps and hydraulic motors, in particular to a reliability test device for hydraulic pumps and hydraulic motors based on power recovery technology. Background technique [0002] As the power source of the hydraulic system, the reliability level of the hydraulic pump is directly related to the reliability and safety of the entire hydraulic system. In order to ensure the quality of the hydraulic pump, it is necessary to conduct a reliability test. At present, the domestic standards for reliability tests of hydraulic pumps and hydraulic motors are not perfect. The reliability test circuit of hydraulic pumps generally refers to the axial piston pump test circuit recommended by JB / T7043-2006. This scheme is a sample established by a single motor. The number is small, and for multi-sample hydraulic pump reliability tests, this scheme will cause huge power consumption, and t...

AI Technical Summary

Problems solved by technology

At present, the domestic standards for reliability tests of hydraulic pumps and hydraulic motors are not perfect. The reliability test circuit of hydraulic pumps generally refers to the axial piston pump test circuit recommended by JB / T7043-2006. This scheme is a sample established by a single motor. The number is small. For the reliability test of hydraulic pumps with multiple samples, this scheme will cause huge power consumption, and the corresponding test cost will also increase.

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