Loading valve for hydraulic part test bench

Abstract

The invention discloses a loading valve for a hydraulic part test bench. The loading valve for the hydraulic part test bench comprises a valve body, wherein a first stepped annular cavity with the right end opening is arranged along the length direction of the valve body, an oil inlet and an oil outlet which are communicated with the first annular cavity and vertically forward are arranged on the valve body in paralleling mode, a rotatable valve core is arranged in the first annular cavity of the valve body in sealing mode, the right end of the valve core stretches out of the valve body, a second annular cavity with the left end opening is arranged along the length direction of the valve core, an oil outlet adjusting channel which is communicated with the second annular cavity and vertically forward is arranged on the valve core, the oil outlet adjusting channel on the valve core is communicated with the oil outlet on the valve body when the loading valve is static, the oil outlet adjusting channel comprises a circular channel, a triangular pyramid groove with the vertex upwards is arranged on a connecting portion of the top of the circular channel and the outside surface of the valve core, and the lower end of the triangular pyramid groove leads to the circular channel. Compared with the prior art, the loading valve for the hydraulic part test bench has the advantages of being simple and compact in structure, small in size, low in cost, convenient to operate, and high in accuracy and good in stability.

Description

technical field [0001] The invention relates to a hydraulic component loading device, in particular to a loading valve for a hydraulic component test bench. Background technique [0002] With the continuous development of science and technology and industry, various performance requirements for hydraulic parts are gradually increasing. The hydraulic part test bench is a simulation device for the loading force in the actual working conditions of the hydraulic parts. The force has the characteristics of large fluctuations over time and many uncertain factors, so that the force loading accuracy, stability, response speed and sensitivity of the loading device for the hydraulic parts test bench directly affect the test accuracy of the hydraulic parts test bench. It is particularly important for the test results to accurately reflect various performance indicators of hydraulic components working under field conditions. In the prior art, the hydraulic loading devices used in the h...

AI Technical Summary

Problems solved by technology

In the prior art, the hydraulic loading devices used in the hydraulic parts testing test bench mainly include: using electromagnetic proportional valves for loading, high cost, unstable pressure, low control accuracy, poor stability, high sensitivity to oil pollution, and prone to oil leakage and stagnation , Difficult to maintain and other problems; by increasing the output load, such as the load of the oil cylinder, the structure is complex, difficult to operate and the cost is high

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