Bottom uplifting device for hydraulic support and hydraulic support

A hydraulic support and jack support technology, which is applied in mine roof support, mining equipment, earthwork drilling and mining, etc., can solve the problems of minimal bottom lifting effect, and achieve the effect of solving the difficulty of arranging bottom lifting, obvious effect and large effective stroke

Active Publication Date: 2011-07-20
益阳市科技成果转化服务中心 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for hydraulic supports in thin coal seams, due to the compact size of the space, especially when the support is lowered to the minimum design height, there is often no space for setting up the bottom lifting device, which will interfere with the top beam. Even if it is arranged reluctantly, the bottom lifting effect is minimal

Method used

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  • Bottom uplifting device for hydraulic support and hydraulic support
  • Bottom uplifting device for hydraulic support and hydraulic support
  • Bottom uplifting device for hydraulic support and hydraulic support

Examples

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Embodiment Construction

[0038] The core of the present invention is to provide a hydraulic support bottom lifting device. The bottom lifting device has the advantages of simple structure, small space occupation, reliable fixing, convenient disassembly and assembly, and is suitable for thin coal seam hydraulic supports.

[0039] Another core of the present invention is to provide a hydraulic support equipped with the above-mentioned bottom lifting device.

[0040] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0041] The term "upper, lower, inner, outer" in this article indicating orientation is based on the positional relationship in the drawings, and should not be interpreted as an absolute limitation on the scope of protection.

[0042] Please refer to image 3 , Figure 4 , Figure 5 , image 3 It is ...

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PUM

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Abstract

The invention discloses a bottom uplifting device for a hydraulic support, which comprises a hydraulic support base (10) and a bottom uplifting jack (20), wherein opposite positioning bases (30) are arranged on the inner side of the hydraulic support base (10); fixed blocks (40) locked by a pin shaft are arranged in openings of the positioning bases (30); lugs (20-1) on both sides of the bottom uplifting jack (20) which are in a rectangular shape are positioned in positioning holes formed by the fixed blocks (40) and the positioning bases (30), and are embedded into the positioning holes formed by the fixed blocks (40) and the positioning bases (30); and the fixed blocks (40) are in a trapezoid shape, and the inclined plane of each fixed block faces the bottom uplifting jack (20). The bottom uplifting device has a simple structure and small occupation space, is fixed reliably and convenient to disassemble and assemble, and can meet the using requirement of the hydraulic support in a low coal seam. The invention also discloses the hydraulic support for the bottom uplifting device.

Description

technical field [0001] The invention relates to the technical field of mining machinery, in particular to a bottom lifting device for an underground hydraulic support in a coal mine. The invention also relates to a hydraulic support provided with the bottom lifting device. Background technique [0002] Hydraulic support is an important part of fully mechanized mining equipment in coal mines. It uses hydraulic pressure as power to realize movements such as lifting and moving forward. It can reliably and effectively support and control the roof of the working face, isolate the goaf, and prevent gangue from entering the mining face and The propulsion conveyor is used in conjunction with the coal mining machine to realize the comprehensive mechanization of coal mining, solve the contradiction that roof management lags behind coal mining work in coal mining work, further improve and enhance the efficiency of coal mining and transportation equipment, and reduce the labor intensity...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D23/04E21D23/16
Inventor 李怀志王宇史向阳
Owner 益阳市科技成果转化服务中心
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