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Mining hydraulic prop

A hydraulic prop and mine-used technology, which is applied in props/brackets, mining equipment, earthwork drilling and mining, etc., can solve problems such as potential safety hazards, abnormal recovery of live pillars, and influence on the working efficiency of underground support operations, so as to ensure work Efficiency and the effect of improving the safety factor

Inactive Publication Date: 2020-01-17
徐州众信矿业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Jamming often occurs in actual use, so that the live column cannot be recovered normally, which seriously affects the work efficiency of downhole support operations and also brings potential safety hazards

Method used

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  • Mining hydraulic prop

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Embodiment Construction

[0012] The present invention will be further described below in conjunction with accompanying drawing.

[0013] Such as figure 1 As shown, a mining hydraulic prop includes a live column 1 and a cylinder body 2, a base 3 and a handle body 4 are respectively provided at the bottom and top of the cylinder body 2, and the live column 1 is slidably arranged in the inner cavity of the cylinder body 2 The piston head 5 arranged at the lower end of the piston head 5 slides and seals with the inner wall of the cylinder body 2. The lower periphery of the cylinder body 2 is covered with a valve seat 7, and the valve seat 7 is provided with a three-purpose valve 8. The three-purpose valve 8 The valve 8 communicates with the bottom of the inner cavity of the cylinder body 2 through the liquid injection channel 9 provided on the cylinder body 2, and the handle body 4 is in sliding and sealing cooperation with the outer cylindrical surface of the live column 1, and is used to limit the posit...

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Abstract

A mining hydraulic prop comprises a plunger and a cylinder body, wherein the bottom and the top of the cylinder body are respectively provided with a base and a handle body; the plunger is slidably arranged in an inner cavity of the cylinder body and is in sliding sealing fit with the inner wall of the cylinder body through a piston head arranged at the lower end of the plunger; a valve seat is sleeved on the periphery of the lower part of the cylinder body; a three-way valve is arranged in the valve seat; the three-way valve communicates with the bottom of the inner cavity of the cylinder body through a liquid injection channel arranged on the cylinder body; the handle body is in sliding sealing fit with the outer cylindrical surface of the plunger and is used for limiting the piston head; the top end of the plunger is fixedly connected with a top plate; the lower part of the top plate is respectively connected with a connecting lug plate A on two sides of the plunger, the upper end of the handle body is respectively connected with a connecting lug plate B on two sides of the piston, and the connecting lug plates A are connected with the connecting lug plates B through elastic connecting pieces. With the adoption of the mining hydraulic prop, movable columns can be normally recovered; the safety coefficient of the supporting work can be increased; and the working efficiency ofthe supporting work can be ensured.

Description

technical field [0001] The invention relates to mining equipment, in particular to a mining hydraulic prop. Background technique [0002] Single hydraulic prop is used as support equipment for underground roadways and working faces in coal mines, and its performance plays an extremely important role in the safe production of coal mines. Jamming often occurs in actual use, so that the live column cannot be recovered normally, which seriously affects the work efficiency of the downhole support operation and also brings potential safety hazards. Contents of the invention [0003] Aiming at the above-mentioned problems in the prior art, the present invention provides a mining hydraulic prop, which can ensure the normal recovery of the live column, improve the safety factor of the support operation, and ensure the working efficiency of the support operation. [0004] In order to achieve the above object, the present invention provides a mining hydraulic prop, comprising a live...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D15/44E21D15/51E21D15/55E21D15/60
CPCE21D15/44E21D15/512E21D15/517E21D15/55E21D15/60
Inventor 张钊郑顺利李春艳孙勇
Owner 徐州众信矿业科技有限公司
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