Testing device and testing method of constant-power valve

Abstract

The invention discloses a testing device of a constant-power valve. The testing device comprises a valve block (1), a swing rod (2), a plug (3) and a piston push rod (4), wherein a step hole (5) and achannel (6) are formed in the front side of the valve block (1), the step hole (5) is arranged perpendicular to the channel (6), a sliding sleeve (7) is fixedly arranged in a small hole of the step hole (5), a left end cover (8) and a right end cover (9) are fixedly arranged in the sliding sleeve (7) and located at the two ends of the sliding sleeve (7), a piston (11) capable of sliding along thesliding sleeve (7) is fixedly arranged on the piston push rod (4), the piston (11) and the left end cover (8) form an oil return cavity, the piston (11) and the right end cover (9) form an oil inletcavity, and the left side of the valve block (1) is provided with the constant-power valve (12). The invention further discloses a testing method. The testing device and method have the beneficial effects that the structure is compact, testing is simple and convenient, the testing cost is reduced, the testing energy consumption is low, and the operation is simple.

Description

technical field [0001] The invention relates to the technical field of constant power valve performance testing, in particular to a testing device and a testing method for a constant power valve. Background technique [0002] Constant power valve is an important part of hydraulic system. At present, the constant power valve is installed on the hydraulic pump to test the adjustment performance of the constant power valve. The hydraulic pump consumes a lot of power during the test to test the constant power valve. This test consumes time and energy, and the test cost is relatively large. The installation of the power valve and the hydraulic pump is complicated and takes up space as a whole. There is also a constant power valve that is tested by manually turning the spool of the constant power valve to ensure that the output pressure of the constant power valve is 10 bar. However, manually turning the spool of the constant power valve increases the labor intensity of the worke...

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Problems solved by technology

At present, the constant power valve is installed on the hydraulic pump to test the adjustment performance of the constant power valve. The hydraulic pump consumes a lot of power during the test to test the constant power valve. This test consumes time and energy, and the test cost is relatively large. The installation of the power valve and the hydraulic pump is complicated and takes up space as a whole

There is also a constant power valve that is tested by manually turning the spool of the constant power valve to ensure that the output pressure of the constant power valve is 10 bar. However, manually turning the spool of the constant power valve increases the labor intensity of the workers and further increases Increased testing difficulty, resulting in high testing costs

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