Test System for Pilot Load Control Valve

Abstract

The invention discloses a testing system of a pilot-operated type load control valve. The testing system of the pilot-operated type load control valve comprises a main oil line hydraulic pump, a pilot-operated oil line hydraulic pump, a proportional overflow valve, a manual overflow valve, a pilot-operated two-way cartridge valve, a main oil line pilot-operated reversing valve, a proportional pressure reducing valve, a leading oil line pilot-operated reversing valve, a manual directional valve, a tested load control valve, a loading pressure transmitter, an oil return pressure transmitter, a control pressure transmitter, a flowmeter, a power amplification device, a data acquisition card, a computer, a main phase step module and a pilot-operated phase step module. The testing system of the pilot-operated type load control valve can conduct comprehensive testing on the one-way connecting characteristic, the load pressure - flow characteristic, the control pressure - flow characteristic, the load pressure phase step characteristic and the control pressure phase step characteristic of the pilot-operated type load control valve.

Description

technical field [0001] The invention relates to a hydraulic valve test system, in particular to a test system for a pilot load control valve. Background technique [0002] In hydraulic system applications such as hoisting machinery, hydraulic winches and various construction machinery, it often occurs that the direction of the load force is consistent with the direction of the required load movement. This kind of load is called an overrunning load (negative load). A hydraulic system that is subjected to an excess load requires a special control valve to control the flow of hydraulic oil flowing from the load back to the oil source. This type of control valve is generally called a load control valve or a balance valve. [0003] However, since there is no clear national and industry standard for the test system of load control valves in my country at present, there are different test methods and systems among manufacturers and research institutions for the test of load control...

AI Technical Summary

Problems solved by technology

[0003] However, since there is no clear national and industry standard for the test system of load control valves in my country at present, there are different test methods and systems for the test of load control valves by various manufacturers and research institutions.

Moreover, often the test systems of each manufacturer and research institution can only test part of the performance of the load control valve, and cannot have a complete test of the various performance parameters of the load control valve

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