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Stand column dynamic test device

A dynamic test, column technology, applied in the direction of measuring device, testing of mechanical components, testing of machine/structural components, etc., can solve the problem of no experimental device, etc., and achieve the effect of verifying strength and design life

Inactive Publication Date: 2015-04-08
CHINA COAL BEIJING COAL MINING MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] There is no relevant experimental device in the prior art

Method used

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  • Stand column dynamic test device

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Experimental program
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specific Embodiment

[0017] Such as figure 1 As shown, the workflow is as follows:

[0018] (1) Fix the column 2 in the test bench, and when the emulsified liquid from the pump station enters the lower chamber of the column, make the column tight in the test bench;

[0019] (2) After contact, the external loading cylinder does not move, and the supercharger is used to pressurize the lower chamber of the column 2 to a high pressure (38-42MPa) and then stop the pressurization;

[0020] (3) The oil pump pressurizes the external loading cylinder 3, and conducts an external loading test on the column, so that the pressure in the lower chamber of the column reaches a specified high pressure (generally 1.1 times the rated working pressure of the column) to stop the loading action;

[0021] (4) Relieve the pressure of the external loading cylinder and the emulsion system, and keep a 10mm gap between the column and the column head tooling.

[0022] The beneficial effects brought by the technical solution...

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Abstract

The invention discloses a stand column dynamic test device, which comprises a frame, wherein a moving beam and an external load oil cylinder are arranged on the frame; after a stand column is supported tightly, one end of the stand column is connected with the moving beam, and the other end of the stand column is connected with the external load oil cylinder. A column head tool is arranged on the moving beam; an upper column socket is arranged on the column head tool; a lower column socket is arranged on the end part of the external load oil cylinder; the upper end and the lower end of the stand column are respectively connected with the upper column socket and the lower column socket through ball heads. The stand column dynamic test device simulates the working principle of a hydraulic support stand column for a coal mine, can simulate actual working conditions under the shaft in a laboratory, develops the dynamic test of the stand column under the internal and external load conditions, tests and verifies the strength and the design life of the stand column, and can be applied in the high-pressure environment under the coal mine shaft.

Description

technical field [0001] The invention relates to a column test device on a coal mine hydraulic support, in particular to a column dynamic test device. Background technique [0002] The current domestic standard GB 25974.1-2010 "Hydraulic Supports for Coal Mine Part 2: Technical Conditions for Columns and Jacks" and MT 313-1992 "Technical Conditions for Columns of Hydraulic Supports" have no effect on the column tests on the hydraulic supports used in coal mines, whether it is strength or life test. Only a simple internal loading test or external loading test is required, and there is no dynamic test method of mixing internal and external loading, but this test requirement has already been found in practice. [0003] There is no relevant experimental device in the prior art. Contents of the invention [0004] The purpose of the present invention is to provide a column dynamic test device which can simulate the actual working conditions in the underground and carry out the d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/00
Inventor 李晓丽荆晓生王亚君刘顺斌
Owner CHINA COAL BEIJING COAL MINING MACHINERY