Light hydraulic support for cannon sampled thin coal layer

A technology of hydraulic support and thin coal seam, which is applied in the direction of mine roof support, mining equipment, earthwork drilling, etc., to achieve the effect of reducing the weight of the whole frame, facilitating installation and operation, and reducing the thickness of materials

Inactive Publication Date: 2009-07-01
兖矿集团有限公司北宿煤矿
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of this application is to provide a light hydraulic support for blasting thin coal seams to solve the problem of safe and effective support for blast mining thin coal seams

Method used

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  • Light hydraulic support for cannon sampled thin coal layer
  • Light hydraulic support for cannon sampled thin coal layer
  • Light hydraulic support for cannon sampled thin coal layer

Examples

Experimental program
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Effect test

Embodiment Construction

[0017] from figure 1 , figure 2 and image 3 It can be seen that the present invention includes a base on which four front and rear hydraulic props 2 and 5 are installed, and the four hydraulic props 2 and 5 are connected to support the box top beam 11 and the hydraulic operating system 4 . in:

[0018] 1. The structure of the base is a split assembly structure, that is, it is divided into a front chassis 1 and a rear chassis 6. The front chassis 1 is equipped with two left and right hydraulic props 2, and the rear chassis 6 is equipped with left and right hydraulic props 5. The front and rear chassis 1 and 6 are connected into one body with spring steel plate 3.

[0019] 2. A box-type roof beam is connected to the top of the four hydraulic pillars. The box-type roof beam 11 is a reinforced box structure, which is welded by upper and lower two-layer steel plates, and reinforcing ribs 14 are welded between the steel plates to improve the overall strength. A jack 10 and a ...

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Abstract

The invention discloses a lightweight hydraulic bracket for blasting thin-seam mining, comprising foundation, four hydraulic supports installed on foundation, supporting top beam on four hydraulic supports and hydraulic pressure system, characterized in that the structure of foundation is fission assembly and top beam is reinforced box structure; at the front of hydraulic support, a drawing folded spillplate in mining is fixed from top beam to foundation; the axis linkage structure of black protecting board and swing link is interference and the axis linkage structure of swing link and foundation is interference. The invention is applied in blasting thin-seam mining, provides mechanical protecting equipment for working surface of blasting thin-seam mining and improving the mining safety.

Description

technical field [0001] This application belongs to coal mine underground transportation equipment. Background technique [0002] In the underground mining of coal mines, the thin coal seams below 1 meter are not suitable for mechanized mining, and blasting, artificial coal removal, and single pillar support are still the main methods, and the technology is backward. Especially the support of single pillars is labor-intensive and the support effect is not good. When the geological conditions are complex, roof accidents are prone to occur and the safety is poor. The current hydraulic supports are all designed for medium-thick coal seams. Taking the four-column hydraulic support as an example, it includes an integral base on which two pairs of hydraulic columns are installed. The front beam is supported by jacks to support the working face, which protects the safe operation of the equipment on the working face. The rear end of the roof beam is fixed with a rear guard, and a s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D23/04
Inventor 高振伟樊玉泉孙洪江王兴雨李培新徐长德宋来智
Owner 兖矿集团有限公司北宿煤矿
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