Horizontal two-degree-of-freedom hydraulic pump vibration acceleration life test bed

Abstract

The invention provides a horizontal two-degree-of-freedom hydraulic pump vibration acceleration life test bed. The test bed comprises a two-degree-of-freedom vibration test device, a driving motor, ahydraulic pump, a bench frame, a first driving device and a second driving device. The two-degree-of-freedom vibration test device is provided with a driving motor and a hydraulic pump, the driving motor is connected with the hydraulic pump, the test bed further comprises an oil path system, and the oil path system is used for converting energy generated by the hydraulic pump into power of the first driving device and the second driving device when an accelerated life test is carried out on the hydraulic pump. And the oil way system is provided with a detection assembly. Energy can be prevented from being directly dissipated and converted into heat energy to be dissipated into air in the hydraulic pump testing process, electric energy needed by movement of the vibration workbench is saved,and meanwhile a real-time monitoring function can be achieved.

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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