A horizontal two-degree-of-freedom hydraulic pump vibration accelerated life test bench

Abstract

The invention provides a horizontal two-degree-of-freedom hydraulic pump vibration accelerated life test bench, a two-degree-of-freedom vibration test device, a drive motor, a hydraulic pump, a bench, a first drive device, and a second drive device; the two-degree-of-freedom vibration The test device is provided with a drive motor and a hydraulic pump, the drive motor is connected to the hydraulic pump, and the test bench also includes an oil circuit system, which is used for accelerated life testing of the hydraulic pump , converting the energy generated by the hydraulic pump into the power of the first drive device and the second drive device, and the oil circuit system is provided with a detection component. The invention can prevent the energy from being directly dissipated and converted into heat energy in the air during the testing process of the hydraulic pump, saves the electric energy required for the movement of the vibrating workbench, and can realize the real-time monitoring function at the same time.

Description

technical field [0001] The invention relates to the field of vibration tables, in particular to a horizontal two-degree-of-freedom hydraulic pump vibration acceleration life test bench Background technique [0002] At present, the commonly used acceleration methods for accelerated life tests of hydraulic pumps are temperature, speed, pressure, displacement and medium pollution. Hydraulic pumps are always under the influence of vibration excitation during actual operation and use, especially in aerospace. The vibration phenomenon of the hydraulic pump used in the field is more obvious, so the accelerated life test of the hydraulic pump by means of vibration does not change its failure mechanism. Through the accelerated life test, the weak link of the product is exposed as soon as possible, and then the product is improved and optimized, the product development cycle is shortened, and the product performance and reliability are improved. [0003] The current hydraulic pump te...

AI Technical Summary

Problems solved by technology

[0004] Most of the early hydraulic pump test benches were loaded in the way of overflow and throttling. Almost all the energy output by the motor was converted into heat energy. This part of heat energy needed to be cooled and consumed part of the electric energy. Later, several energy-saving test methods using power recovery using hydraulic motor loading were proposed, but these methods have low energy utilization and high energy consumption.

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