Pump-controlled power recovery hydraulic control system of hydraulic cylinder testing test stand

Abstract

The invention discloses a pump-controlled power recovery hydraulic control system of a hydraulic cylinder testing test stand. The pump-controlled power recovery hydraulic control system of the hydraulic cylinder testing test stand comprises a tested hydraulic cylinder pump control system which is used for controlling the moving speed and the displacement of a tested hydraulic cylinder, a loading hydraulic cylinder pump control system which is used for controlling loading force of a loading hydraulic cylinder, an auxiliary system which is formed by a low-pressure oil replenishing system and a control oil system, and a power recovery system. A main pump motor, a main pump and a loading motor are coaxially and mechanically connected, the main pump motor is used for driving the main pump, most output power of the main pump is finally recovered to the loading motor, the loading motor drives the main pump through mechanical transmission and the power repetitively circulates among the main pump motor, the main pump, the loading motor and the main pump to achieve the goal of power recovery. The pump-controlled power recovery hydraulic control system of the hydraulic cylinder testing test stand has the advantages of low energy consumption, less emitted heat, low installed power and the like by adopting a closed pump control system.

Description

technical field [0001] The invention relates to a hydraulic cylinder test bench control device, in particular to a hydraulic cylinder test bench power recovery hydraulic control system. Background technique [0002] With the development of science and technology, the application of hydraulic transmission technology is becoming more and more extensive, and the proportion of hydraulic equipment in the entire mechanical equipment is also increasing. As the main actuator of the hydraulic system, the hydraulic cylinder's comprehensive performance not only affects the performance of the system, but also affects the life of the equipment. In particular, the construction machinery industry has a large demand for hydraulic cylinders, high quality requirements, and harsh working conditions and severe load changes, which put forward new requirements for the performance of hydraulic cylinders. Therefore, the dynamic and static performance, reliability and life of hydraulic cylinders Te...

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Problems solved by technology

[0005] In view of the defects existing in the above-mentioned prior art, the technical problem to be solved by the present invention is to provide a pump control power recovery hydraulic control system for a hydraulic cylinder test bench, which has a wide range of applicable tests for a traditional hydraulic cylinder test bench and excellent test performance. Comprehensive, simple structure, high reliability, long life, stepless adjustment of loading power, etc., while avoiding the disadvantages of the existing hydraulic cylinder test bench system, such as the failure of energy recovery or low recovery rate and large heat generation.

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