Energy-saving low-impact hydraulic cylinder test bench hydraulic control system

Abstract

The invention discloses an energy-conservation and low-impact hydraulic cylinder test testbed hydraulic control system. The system comprises a constant pressure variable pump, two electromotors, two electromagnetic unloading overflow valves, six check valves, two energy accumulators, an electrohydraulic proportional direction valve, two speed regulating valves, four ball valves, an oil supplementing pump, a proportional throttle valve, an electromagnetic reversing valve, a loading hydraulic cylinder, six pressure sensors, two temperature sensors, a displacement sensor, a force sensor, two travel switches, six pressure measuring connectors, six pressure gages, a heater, a liquid level liquid temperature gage, a filter and an oil tank. The energy-conservation and low-impact hydraulic cylinder test testbed hydraulic control system has the advantages that stable energy is provided for low-impact control over the speed of a tested hydraulic cylinder while energy is conserved, low-impact stable control over the loading force is achieved, meanwhile, the actual work condition that loads of the hydraulic cylinder probably change continuously in work can be simulated, all the work conditions of the loads of the hydraulic cylinder can be simulated, and power input is reduced.

Description

technical field [0001] The invention relates to the field of hydraulic cylinder testing, in particular to a hydraulic control system for an energy-saving low-impact hydraulic cylinder test bench. Background technique [0002] The hydraulic cylinder performance test test bench is a platform for hydraulic cylinder performance testing, which can comprehensively test the performance and quality of hydraulic cylinders. With the continuous improvement of my country's industrial science and technology level, the hydraulic industry has higher and higher requirements for the comprehensive performance of hydraulic cylinders. This requires that there must be a hydraulic cylinder performance test bench with advanced technology and comprehensive testing to ensure the accuracy of hydraulic cylinder performance testing. , thus ensuring the performance and quality of the hydraulic cylinders produced. [0003] The system on the side of the tested hydraulic cylinder of the common hydraulic cy...

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Problems solved by technology

[0006] Aiming at the above-mentioned defects in the prior art, the technical problem to be solved by the present invention is to provide an energy-saving low-impact hydraulic cylinder test bench hydraulic control system, which has a wide range of applicable test models for traditional hydraulic cylinder test benches, test It has the characteristics of comprehensive performance, simple structure, high reliability, and long life, and overcomes the shortcomings of the measured hydraulic cylinder speed and the loading force of the loaded hydraulic cylinder, such as unstable energy recovery or low recovery efficiency.

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