Hydraulic support for large-mining height caving coal

A technology of hydraulic support and top coal caving, which is applied in mine roof support, mining equipment, earthwork drilling and mining, etc. It can solve the problems of poor torsional performance, increased labor intensity, and occupying the installation space of double rear connecting rods, etc., to achieve stability Good performance, improved work efficiency, and a reasonable ratio of extraction and discharge

Inactive Publication Date: 2009-06-24
TIANDI SCI & TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] It is difficult to use double rear connecting rods for common roof coal caving hydraulic supports due to space limitations, mainly because the common support tail beam jack occupies the installation space of double rear connecting rods, so ordinary top coal caving hydraulic supports can only use

Method used

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  • Hydraulic support for large-mining height caving coal
  • Hydraulic support for large-mining height caving coal
  • Hydraulic support for large-mining height caving coal

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Embodiment Construction

[0026] see figure 1 , figure 2 , Figure 4 , Figure 7 , Figure 8 , Figure 9 , Figure 10As shown: the hydraulic support for large mining and high-level top-coal caving is used in the large-scale high-level top-coal caving working face, which mainly includes a column 16 and a top beam 7 and a base 19 respectively hinged at both ends. The column 16 makes the maximum height of the support reach 4.0 meters to 5.2 meters, four columns 16 are used, and the four columns 16 are arranged symmetrically in two rows. There is a passage between the columns 16; one side of the top beam 7 is provided with a top beam side guard plate 8, which is used for sealing and anti-falling between the frames. A side push mechanism a9 is hinged between the top beam 7 and the top beam side guard plate 8, and the top beam side guard plate 8 is hinged with the side push jack a91 inside the top beam 7 through the guide rod a92, and is realized by means of the push of the side push jack a91. Telesco...

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Abstract

The invention discloses a large mining height top coal caving hydraulic support and relates to the technical field of colliery coal mining supporting equipment and support equipment for large mining height top coal caving working face. The support comprises a pillar, a top beam and a base that the two ends thereof are articulated respectively, a front beam that is articulated to the front end of the top beam, a telescopic beam in the front beam, a side wall protection mechanism that is articulated with the telescopic beam, a shield beam that is articulated with the rear end of the top beam, a caving mechanism that is arranged at the rear the shield beam, a connecting-rod mechanism that is articulated between the rear of the base and the rear of the shield beam and four pillars which are articulated between the base and the top beam and can lead the maximum of the height of the support to be 4.0-5.2 meters, wherein the connecting-rod mechanism is provided with two front connecting rods and two rear connecting rods and has good stability, and a pedestrian passageway is formed between the two front connecting rods and the two rear connecting rods. The support has the characteristics of a top coal caving hydraulic support and a large mining hydraulic support, thus beneficial for safely and efficiently caving thick and super-thick coal seams, rationalizing the caving ratio, and ensuring gas dilution near a working face coal caving mouth.

Description

technical field [0001] The invention relates to the technical field of coal mining support equipment in coal mines, and belongs to a support equipment used for large mining and high top coal caving mining working faces. Background technique [0002] The top-coal caving hydraulic support is the key equipment of the top-coal caving mining method, and the innovation and development of the top-coal caving hydraulic support frame type is an important condition and symbol for the technical innovation and development of the top-coal caving mining method. At present, the maximum height of the top-coal caving support is generally within 3.5 meters. With the acceleration of coal mine mechanized mining and the change of geological conditions, the performance of these supports can no longer fully meet the requirements of thick and extra-thick coal seam mining. Under suitable conditions , Combining the advantages of top coal caving mining and large mining height fully mechanized mining m...

Claims

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Application Information

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IPC IPC(8): E21D23/04
Inventor 王国法孟二存刘新华宁桂峰苏林军张银亮李提建牛艳奇刘俊峰王彪谋杜忠孝
Owner TIANDI SCI & TECH CO LTD
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