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High-strength retractable bracket

A high-strength, U-shaped technology, applied in pillars/supports, mining equipment, earthwork drilling and mining, etc., can solve problems such as poor stability, breaking, and variability of incoming pressure, so as to reduce support density, facilitate operation, and be difficult to be damaged. Bad effect

Inactive Publication Date: 2016-04-06
刘允勇
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cross-section of the traditional U-shaped steel retractable bracket is an unclosed U-shape, which has poor stability, variable pressure, and even breaks

Method used

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  • High-strength retractable bracket
  • High-strength retractable bracket
  • High-strength retractable bracket

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Embodiment Construction

[0026] like figure 1 , 2 , 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, and 14, a high-strength retractable support includes a column shoe 4 and a U-shaped shed installed above the column shoe 4 Leg 3, U-shaped side beam 2 installed on the upper part of U-shaped shed leg 3, U-shaped middle beam 1 installed above U-shaped side beam 2, U-shaped middle beam 1, U-shaped side beam 2 and U-shaped side The bracket 5 between the beam 2 and the U-shaped shed leg 3, the upper part of the U-shaped middle beam 1, the U-shaped side beam 2 and the U-shaped shed leg 3 are all fixedly installed with an upper bottom plate 9, and the U-shaped Both ends of the middle beam 1 are provided with a middle beam slope 10, the bottom of the U-shaped side beam 2 is provided with a side beam slope 12, and the upper end of the U-shaped side beam 2 is provided with a gap 13 on the upper part of the side beam. The upper end of the shed leg 3 is provided with a notch 15 on the upper part of the shed leg, and a side...

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Abstract

The invention relates to a high-intensity retractable support. An upper bottom board is fixedly installed at the upper portions of a middle beam of the U-shaped support, each side beam of the U-shaped support and each shed leg of the U-shaped support. The two ends of the middle beam of the U-shaped support are respectively provided with a middle beam slope. The bottom of each side beam of the U-shaped support is provided with a side beam slope. The upper end of each side beam of the U-shaped support is provided with a side beam upper notch. The upper end of each shed leg of the U-shaped support is provided with a shed leg upper notch. A side beam cushion block is arranged at the position, where the middle beam of the U-shaped support and each side beam of the U-shaped support are connected, of the side beam of the U-shaped support. A first cushion block connecting and clamping cable is movably installed at each lower end face of the middle beam of the U-shaped support and the outer side of the corresponding side beam cushion block. A shed leg cushion block is arranged at the position, where each side beam of the U-shaped support is connected with the corresponding shed leg of the U-shaped support, of the shed leg of the U-shaped support. A second cushion block connecting and clamping cable is movably installed at the lower end face of each side beam of the U-shaped support and the outer side of the corresponding shed leg cushion block. The high-intensity retractable support is simple in structure, convenient to operate, high in intensity and capable of being recycled, the service life of the support is largely prolonged, and the support has good social benefits and economic benefits.

Description

technical field [0001] The invention relates to the field of coal mines, in particular to a mining support, in particular to a high-strength retractable support. Background technique [0002] As the mining depth of some old mines and new mines increases, the vertical depth of the roadway also increases, and the roadway pressure continues to increase. Ordinary U-shaped steel brackets can no longer meet the requirements of support. It is mainly manifested in the single-point and double-point crushing failure of the vault flattened under the action of strong top pressure; Breakage of shed legs, large-scale twisting failure and local buckling failure due to partial longitudinal force. [0003] The buckling deformation of the U-shaped steel support after being subjected to the surrounding rock pressure is related to the unsealed U-shaped steel mouth. If the U-shaped steel mouth is closed, the compressive strength of the U-shaped steel bracket can be doubled. Whether it is a s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D15/14E21D15/50
Inventor 刘允勇冯康金陈全建党国军尚超峰赵乾坤徐涛张洪石周万普杨振刘晓鹏杨红旗辛赛飞武先艳杨帆庞旭光周晶杰魏亚峰朱军亮
Owner 刘允勇
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