Full-stroke sealing performance testing device for hydraulic stand column and jack and using method

Abstract

The invention relates to the technical field of coal mine underground supporting equipment, in particular to a full-stroke sealing performance testing device for a hydraulic stand column and a jack and a using method. The testing device comprises an emulsion pump station, a connecting oil way, a hydraulic stand column, a jack, an operating valve, a hydraulic lock, a first oil way connecting block, a second oil way connecting block, a one-way valve, a large-flow loading safety valve, a first stop valve, a second stop valve, a third stop valve, a fourth stop valve, a first pressure gauge, a second pressure gauge, a third pressure gauge, a first pressure sensor, a second pressure sensor, a flow sensor, an acceleration sensor, data acquisition and analysis software, a memory and a display. The problem of missing detection of a traditional test bed for detecting a stand column or a jack is solved, an internal loading mode is adopted, a complex external loading device is simplified, the production cost of the testing device is reduced, and an early warning signal can be directly given to an unqualified stand column or jack according to test data.

Description

Technical field [0001] The present invention relates to the technical field of coal mine supporting equipment, in particular, to a hydraulic column and a full stroke sealing performance testing device and method of use. Background technique [0002] One of the main equipment of the hydraulic stent coal mine, the top plate of the support work is an important role; the column and jacks are key components of hydraulic brackets. If the column and jack sealing performance failure, the hydraulic bracket cannot work, not only Production of coal, but also endangers the safety of coal mining face staff and equipment; coal mines need small and medium-sized cultural and overhauls a lot of hydraulic brackets and jacks; actual work, hydraulic brackets After medium and small repair, test column and jack Whether or not to load the test bench, according to the technical specifications of the coal mine mechanical and electrical equipment, only the intermediate position of the column or jack, the ...

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Problems solved by technology

[0002] Hydraulic support is one of the main equipment of coal mine fully mechanized mining face, which plays an important role in supporting the roof of the working face; the column and the jack are the key components of the hydraulic support, if the sealing performance of the column and the jack fails, the hydraulic support will not work, which will not only affect The production of coal also endangers the safety of personnel and equipment in the coal mining face; coal mines need small and medium repairs and overhauls of many hydraulic support columns and jacks every year; in actual work, after the hydraulic support is repaired in small and medium Whether the loading test bench is qualified, according to the technical specifications for the maintenance of mechanical and electrical equipment in coal mines, the loading test can only be carried out on the middle position, the maximum height 1 / 3, 2 / 3 positions and both ends of the column or jack, and the full stroke loading test cannot be carried out. In addition to the incomplete detection of the column or jack, there are problems of omissions, so that even if the column or jack passes the test, only a few positions can be guaranteed to be qualified, and the entire stroke of the column or jack cannot be guaranteed to be qualified; in addition, the used hydraulic support After being raised to the ground, if the column and jack of the hydraulic support are not tested on the test bench, it is not known whether the sealing performance is qualified and whether it can continue to be used. It needs to be completely dismantled and then repaired

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