CN103133019A

CN103133019A - Flexible shield support with adjustable height

Info

Publication number: CN103133019A
Application number: CN2011103751206A
Authority: CN
Inventors: 王琼; 陈刚; 张晓宇; 孙广义
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-11-23
Filing date: 2011-11-23
Publication date: 2013-06-05

Abstract

The invention discloses a flexible shield support capable of fitting in with variation in thickness of a coal seam. A telescopic support leg is installed on a normal flexible shield support and connected with the flexible shield support through a screw rod. When the thickness of the coal seam changes, the extending length of the telescopic support leg is adjusted through the screw rod and the supporting range of the support is changed. Therefore, the support can fit in with a certain range of variation in thickness of the coal seam.

Description

The adjustable height flexible type shield

Technical field: the present invention is applied to a kind of support apparatus of high-dipping coal-face.

Background technology:

The exploitation method of half-edge coal seam is the difficult problem in coal-mining technique always, has caused the attention of national departments concerned.For a long time, people have made unremitting effort to this, and have obtained gratifying progress.Yet due to the particularity of steeply-inclined seam mining condition, exploitation method remains the major obstacle that this class mine improves the Technological Economy looks.The half-edge coal seam reserves account for 8% of coal in China gross reserves, and the tax of the mining area of southern area 80% has half-edge coal seam.Therefore, about the research of steeply-inclined seam mining method, the development of China coal industry still had very important function.

The geological conditions that bury in the exploitation method of half-edge coal seam and coal seam has substantial connection.Select certain coal-mining method not only to be subjected to the impact of seam inclination and thickness, and with coal seam buried depth, coal seam number, rock property, geological structure, and many-sided geologic(al) factor such as the spontaneous fire character in coal seam, gas bearing capacity, hydrologic condition is relevant.

The coal-mining methods such as shield support of falling from power rank work plane, horizontal slice, roadway longwall and advancing along the cant of bowing are carried out according to different condition of coal seam occurrence in each mining area.Middle nineteen seventies, the pseudo-tiltedly flexible type shield coal-mining method pioneering with Huainan Mining Area succeeds as sign.This coal-mining method has that output is large, production system is simple, the tunnelling amount is little, stoping work is few, production safety, material consumption is low and the efficiency advantages of higher.This coal-mining method major defect is the supporting structure imperfection, can not adapt to the variation of coal seam thickness in transferring process, and the variation at inclination angle can not be too large.Therefore require in the more stable area applications of ocurrence of coal seam, otherwise can cause very large difficulty.The present invention is intended to solve the pseudo-tiltedly flexible type shield coal-mining method supporting problem that causes due to Coal Seam Thickness Change.

Summary of the invention:

The characteristics such as half-edge coal seam has complicated geological, and ocurrence of coal seam is unstable, and varied in thickness is large, the problem that can not adapt to Coal Seam Thickness Change for the flexible type shield that solves present employing, improve coal mining rate and safe coefficient, reduce labor strength, invention a kind of with low cost, mounting process is simple, conveniently moving, safe and reliable, and can adapt to a kind of support of Coal Seam Thickness Change, be referred to as the adjustable height flexible type shield, the theing contents are as follows of this invention:

Support of the present invention partly is comprised of flexible shield support support body, telescoping shoring column leg, screw rod, gripper shoe, baffle plate, fixed head etc., the telescoping shoring column leg is linked together by screw rod and flexible shield support support body, when coal seam thickness diminishes, rotation by screw rod is shunk the telescoping shoring column leg, reduce the stent support height, when coal seam thickness became large, the adjustable screw bar made the elongation of telescoping shoring column leg, increase the stent support height, to satisfy the thick requirement of different coals.

Description of drawings:

Fig. 1 telescoping shoring column leg is in contraction state

1-flexible shield support support body; 2-telescoping shoring column leg; The 3-screw rod; The 4-gripper shoe; The 5-baffle plate; The 6-fixed head;

Fig. 2 telescoping shoring column leg is in elongation state

The specific embodiment:

1, the installation of support

At the interior installation telescoping shoring column of support support body 1 leg 2, first screw rod 3 is passed fixed head 6 without spiral end during installation, then baffle plate 5 is installed, by nut, that it is fastening, telescoping shoring column leg 2 is fit in support support body 1 until the circular hole on its upper surface and screw rod 3 join, rotating screw bar 3 shrinks telescoping shoring column leg 2 again, enter in support support body 1, its state as shown in Figure 1, 2.

2, the initial support height arranges

When the initial stage installs, can be according to open-off cut place coal seam thickness adjustable screw bar, make that support height and coal are thick to adapt.

3, support is adjusted during the thick variation of coal

When coal seam thickness diminished, the rotation by screw rod was shunk the telescoping shoring column leg, reduces the stent support height, and when coal seam thickness became large, the adjustable screw bar made the elongation of telescoping shoring column leg, increases the stent support height.Screw rod 3 is fixed together with gripper shoe 4, when scalable pin of screw rod rotation stretches out, gripper shoe 4 is adjacent to fixed head 6 on support support body 1 and take it as fulcrum, and when scalable pin of screw rod rotation retracted, baffle plate 5 was adjacent to fixed head 6 on support support body 1 and take it as fulcrum.

When in work plane, Coal Seam Thickness Change is large, can the telescoping shoring column leg be installed respectively in the support both sides, to improve the bearing height scope of support.

4, the problem that should note of use procedure

When the adjustable height flexible type shield is one-sided adjustable height, be that support only has a bogie side frame leg when scalable, expansion end should be placed on base plate one side, when the adjustable height flexible type shield is two one-sided adjustable heights, require the rack leg length of top board one side to be not more than base plate one side during the adjusting pole height, to prevent support tilt.

A series of supplementary materials such as this adjustable height support, wire rope, U-bolt, wire clips are through the overall structure with flexibility, shielding property of certain procedures composition.Its using method at coal-face is identical with conventional flexible type shield.

Claims

1. adjustable height flexible type shield feature is that telescoping shoring column leg (2) can extend and can shorten, with the support scope of this adjusting pole.

2. screw rod (3), support support body (1) is made of with being linked together, the rotation by screw rod (3) makes and elongates or shortens.