Hydraulic support PPT test method

A test method and technology of hydraulic support, applied in the testing of machine/structural components, measuring devices, instruments, etc., can solve the problems of adaptability test and transportation plan test, lack of effective PPT test method, unable to support reliability test and other problems

Inactive Publication Date: 2019-05-21
CHINA COAL BEIJING COAL MINING MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there is no effective PPT test method for the hydraulic supports used in coal mines, and the reliability test, adaptability test and transportation plan test of the supports cannot be fully and effectively tested. and feasibility assessment

Method used

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  • Hydraulic support PPT test method

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment

[0060] Specific examples, such as figure 1 Shown:

[0061] 1. Preparation

[0062] 1. On the test site, set (weld) the moving connecting seat according to the standard center distance of the bracket, one for each bracket; and leave a space for moving the bracket in the forward direction of the bracket.

[0063] 2. Connect the bracket firmly to the push connection seat, and keep the standard center distance and parallel to the bracket.

[0064] 3. The movable side guard is retracted and mechanically locked securely.

[0065] 4. The push rod of the bracket is fully extended from the base.

[0066] 5. Adjust the height of the brackets to the maximum mining height (according to the technical notice), and keep the height of the brackets consistent.

[0067] 2. Stent PPT test method and requirements

[0068] 1. All functional actions of a single bracket (excluding push action), the whole stroke is tested 100 times. Among them, the lifting action range of the column: the maximum ...

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Abstract

The invention discloses a hydraulic support PPT test method comprising the steps of setting a push connecting base at a test site according to a standard center distance of the bracket to firmly connect the bracket to the push connecting base; performing a bracket PPT test, and detecting and recording the test content. Through the bracket dislocation "down-shift-up-push" to detect the correlationbetween the brackets, the limit position verification by the respective limit actions of the bracket can fully and effectively test the reliability, adaptability test and transportation scheme of thebracket, and evaluate the ultimate position of the bracket, the inter-bracket correlation, downhole transportation and feasibility.

Description

technical field [0001] The invention relates to a test method of a hydraulic support for coal mines, in particular to a PPT test method for a hydraulic support. Background technique [0002] Various problems frequently occurred in the early stage of the use of the support downhole, such as leakage of hydraulic parts, easy fall off of fasteners, column rotation, some parts are difficult to disassemble and maintain, and interference between the pipes between the supports and so on. There are no clearer requirements for this in various domestic and international standards. In order to better improve the performance of the product and effectively verify the quality of the bracket in terms of design, process, and manufacturing, it is necessary to effectively verify its performance more comprehensively during the bracket prototype stage, so as to detect problems in advance, solve them and rectify them in time. Avoid batch quality issues in future products. [0003] Based on the ...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): G01M99/00
Inventor李晓丽夏国茂刘顺斌赵铁军赵增郑本芳王志媛王伯勋
OwnerCHINA COAL BEIJING COAL MINING MACHINERY