Leakage diagnostic system and method of hydraulic bracket as well as hydraulic bracket

Abstract

The invention provides a leakage diagnostic system of a hydraulic bracket, comprising a motion judging unit, a flow detecting unit and a leakage judging unit, wherein the motion judging unit is used for detecting the motion state of a bracket to be detected; the flow detecting unit is used for obtaining a liquid supply flow and a liquid returning flow of the bracket to be detected when the bracket to be detected does not move; the leakage judging unit is used for judging whether the bracket to be detected leaks or not; when the liquid supply flow or the liquid returning flow is more than a pre-set flow threshold value, the bracket to be detected is in a leaking state; and otherwise, the bracket to be detected does not leak. Correspondingly, the invention further provides the hydraulic bracket and a leakage diagnostic method of the hydraulic bracket. With the adoption of the technical scheme, whether the hydraulic bracket leaks or not can be accurately judged; and the system has a simple and reliable structure.

Description

technical field [0001] The invention relates to the technical field of leakage diagnosis of a hydraulic support, in particular to a leakage diagnosis system and a diagnosis method of a hydraulic support, and a hydraulic support. Background technique [0002] The leakage of the hydraulic system of the hydraulic support is mainly divided into external leakage and internal leakage. In related technologies, the external leakage is mainly judged by observing whether there is leakage in the valve, pipeline and oil cylinder; the internal leakage is mainly the internal leakage of the hydraulic cylinder. It is mainly detected by the test method: firstly, the machine should be turned on in place according to the test operation regulations, and then the reversing valve should be operated to move the piston of the hydraulic cylinder to the test position. Outflow can judge the leakage of the hydraulic cylinder. [0003] However, the above method still has the following disadvantages: ...

AI Technical Summary

Problems solved by technology

[0004] 1) The way of observation is greatly influenced by human beings, such as the influence of operator experience and ambient light, which makes the probability of failure reporting or untimely discovery higher;

[0005] 2) Judging the fault through the test method needs to disassemble the oil return chamber pipeline of the hydraulic cylinder. This method is time-consuming and labor-intensive, which affects production and cannot be detected online in real time

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