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Hydraulic multipath reversing valve delivery test method

A technology of multi-way reversing valve and factory test, applied in the field of hydraulic valve, can solve the problems of low work efficiency, high labor intensity of workers, and it is difficult to meet the requirements of batch factory test, so as to improve the test efficiency and reduce the labor intensity of workers. Effect

Inactive Publication Date: 2015-12-16
WUXI YANGGONG MACHINERY MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of test process needs to replace the oil port connection many times, the labor intensity of the workers is high, the work efficiency is low, and it is difficult to meet the current batch factory test requirements

Method used

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Examples

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Embodiment Construction

[0010] Preferred embodiments of the present invention are described below, and it should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0011] A factory test method for a hydraulic multi-way reversing valve, including the following steps, 1) pressure test, apply a pressure test pressure to each pressure oil port, and increase the pressure test pressure at a rate of 2% per second during the test , keep the pressure for 5 minutes; 2) Oil circuit type and spool valve function, operate the multi-way reversing valve handle, observe the on-off situation of each oil circuit, and determine the oil circuit type and spool valve according to the multi-way valve oil circuit schematic diagram. Function; 3) Reversing performance, close the safety valve and overload valve, operate the handles of the tested valve under the nominal flow rate and nominal pressure, an...

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Abstract

The invention provides a hydraulic multipath reversing valve delivery test method comprising the following steps of 1) a pressure resisting test: pressure resisting test pressure is applied to each pressure bearing oil port; 2) an oil way type and a slide valve function: a multipath reversing valve handle is operated, the on / off situation of each oil way is observed, and the oil way type and the slide valve function are judged according to a multipath valve oil way principle diagram; 3) reversing performance; 4) pressure loss; 5) safety valve performance: the AB port of the tested multipath valve is plugged and placed at the reversing position, system pressure is regulated to be higher than nominal pressure of a safety valve, and pressure regulating range, pressure stability, pressure oscillation and closed features of the safety valve are determined via nominal flow; and 6) overload valve performance: the tested multipath valve is placed at the neutral position, an overload valve is closed, oil is taken in from the AB oil port, system pressure is regulated to nominal pressure, and leakage amount is measured from a T port.

Description

technical field [0001] The invention belongs to the field of hydraulic valves, in particular to a factory test method for hydraulic multi-way reversing valves. Background technique [0002] The hydraulic multi-way reversing valve is a combination of reversing valves that can control multiple hydraulic actuators. valve. The valve is compact in structure, easy to arrange and easy to operate, and is widely used in construction machinery such as loaders and excavators. In the production process of hydraulic multi-way reversing valve, the factory inspection is an extremely important link. During the test process, according to different experimental items, separate experiments are adopted, and the connections of each oil port are frequently replaced or disassembled. This kind of test process needs to replace the oil port connection many times, the labor intensity of workers is high, and the work efficiency is low, so it is difficult to meet the current batch factory test require...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/00
Inventor 杨龙兴
Owner WUXI YANGGONG MACHINERY MFG
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