CN210164488U

CN210164488U - Stay little pillar gob entry side supporting device that digs

Info

Publication number: CN210164488U
Application number: CN201921011683.5U
Authority: CN
Inventors: 黄志栋; 金宝圣; 张凯辉; 张�杰; 李磊
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-07-02
Filing date: 2019-07-02
Publication date: 2020-03-20
Anticipated expiration: 2029-07-02

Abstract

The utility model relates to a stay little coal pillar gob entry group portion supporting device that digs discloses a combine current section bar to use, can form between the section bar and between the cliff and connect fixed stay little coal pillar group portion supporting device. The anchor rod is obliquely inserted and penetrates through the section steel for many times, the limiting performance on the supporting section steel is good, and the supporting stability of the side part is good. Its characterized in that the main part board is arc platelike structure, the bottom both sides limit of main part board is respectively to the arc extension down and form two support arms, the foot of having filled up has been put to the bottom of support arm, main part board, support arm and the combination of foot of filling up form the main part frame, the one end of filling up the foot is bent downwards, hangs the claw and arranges main part frame top bottom in, it has anti-skidding arch to hang claw surface to put, it has the guiding hole to open on the main part board, it has a plurality of grooves of accomodating to open around the angle such as guiding hole on the main part board, accomodate groove and guiding hole intercommunication, the guiding hole with accomodate the combination of groove and form plum blossom column structure, the stock runs through the guiding.

Description

Stay little pillar gob entry side supporting device that digs

Technical Field

The utility model relates to a stay little pillar gob entry group portion supporting device that digs relates to a device that the group portion of digging along the sky of staying little pillar was strutted, belongs to the mine equipment field. In particular to a remaining small coal pillar side supporting device which is used by combining the existing section bars and can form connection and fixation between the section bars and between rock walls.

Background

At present, when a small coal pillar is left in a coal seam and tunneled along the air and returned to the air tunnel, the side part of the tunnel is generally required to be supported, due to the mining influence and the soaking effect of water in a mining area, the medium of the small coal pillar on the upper part of the tunnel is soft, the shear strength between the coal seam and a top plate is obviously reduced, after the tunnel is excavated, the small coal pillar is easily drawn out under the influence of the weight of the small coal pillar and other external factors, the safety in the tunnel is influenced, at present, the side part supporting of the small coal pillar is mainly supported in a shed type through channel steel, I-steel and other section steel, but the existing side part supporting between the small coal pillar and the tunnel is poor in laminating integrity and can be combined with the combined supporting effect of an anchor net steel belt, but the connecting stability between the small coal pillar and the section steel belt is poor, the small coal pillar is mainly compressed through the end face.

Publication number CN201187308 discloses a large dip angle thick coal seam gob-side entry driving support with small coal pillars, which comprises support legs, a triangular fixing support, support leg cross braces and a fixing anchor rod, and is characterized in that: the supporting leg is I-shaped, a triangular fixing support is welded to the upper end and the lower end of the supporting leg respectively, fixing anchor rods of the upper end and the lower end of the supporting leg penetrate anchor rod holes of the triangular fixing support, one section of the fixing anchor rod is anchored into a stable rock stratum of a roadway top and a bottom plate, a supporting plate is hung at the other end of the fixing anchor rod, the upper end and the lower end of the supporting leg are fixed on a coal wall of the roadway upper wall, a strong supporting whole is formed by supporting and supporting a metal net, a high-strength prestressed anchor rod, a steel belt and the like, the supporting leg is connected and fixed through a welding mode, the connecting mode is fixed and cannot be flexibly adjusted, the danger of underground welding operation is.

Disclosure of Invention

In order to improve the condition, the utility model relates to a stay little coal pillar gob entry group portion supporting device that digs provides one kind and combines current section bar to use, can to form between the section bar and between the cliff to connect fixed stay little coal pillar group portion supporting device. The anchor rod is obliquely inserted and penetrates through the section steel for many times, the limiting performance on the supporting section steel is good, and the supporting stability of the side part is good.

The utility model relates to a stay little coal pillar gob entry side supporting device that digs is realized like this: the utility model relates to a stay little coal pillar gob entry group portion supporting device that digs comprises support double-screw bolt, clamp plate, gland nut, support arm, pad foot, stock, guiding hole, accomodate the groove, hang claw, push pedal, elastic support plate, swivel nut and main part board, the main part board is arc platelike structure, the bottom both sides limit of main part board respectively downwards the arc extend and form two support arms, the pad foot is put to the bottom of support arm, main part board, support arm and pad foot combination form the main part frame, the one end of pad foot is bent downwards, hang claw arranges main part frame top bottom in, hang claw surface to have the antiskid arch, it has the guiding hole to open on the main part board, it has a plurality of grooves of accomodating to open around the equal angle of guiding hole on the main part board, accomodate groove and guiding hole intercommunication, the guiding hole forms plum blossom-shaped structure with accomodating the combination of groove, and the stock runs through the guiding hole, a plurality of elastic support plates are arranged in the plurality of accommodating grooves in a one-to-one correspondence manner, the push plates are arranged on the elastic support plates and are pressed on the anchor rods, the push plates are combined to form a cylindrical structure, the surfaces, facing the anchor rods, of the push plates are arc concave surfaces and are attached to the anchor rods, the elastic support plates are of W-shaped structures, the elastic support plates are formed by continuously bending metal plates for three times, bending angle positions are arc transition, the threaded sleeves are sleeved on the anchor rods, internal threads are arranged on the inner side walls of the threaded sleeves, external threads are arranged on the outer side walls of the threaded sleeves, the internal threads and the external threads are in threaded connection, the pressing plates are arranged on the outer side walls of the threaded sleeves, a plurality of supporting studs are arranged on the pressing plates at equal angles, the supporting studs and the pressing plates are in threaded connection with each other, one end of each supporting stud is pressed on the arc convex surface of, the anchor rod is sleeved with the other end of the compression nut, a stepped hole is formed in the compression nut, the diameter of one end of the compression nut is larger than that of the other end of the compression nut, one end of the compression nut is in threaded connection with the external thread on the outer side wall of the threaded sleeve, and the other end of the compression nut is in threaded connection with the anchor rod.

Has the beneficial effects.

Firstly, the stock slant inserts, and runs through shaped steel many times, and is good to the spacing nature of strutting the shaped steel, and the stability is good is strutted to the group portion.

And secondly, the leading-in angle of the anchor rod can be adjusted and deflected to adapt to different drill holes.

Thirdly, can dismantle, independent overall arrangement installation carries out the fixed block of shaped steel.

Drawings

Fig. 1 is a three-dimensional structure diagram of a gob-side entry driving side supporting device for a small coal pillar of the utility model;

fig. 2 is a three-dimensional structure diagram of a main body frame of the gob-side entry driving side supporting device for the small coal pillars, which only shows the three-dimensional structure diagram of the main body frame;

fig. 3 is a schematic structural view of the gob-side entry driving side supporting device for the small coal pillars of the utility model;

fig. 4 is a schematic structural view of the small coal pillar gob-side entry driving side supporting device in a use state;

fig. 5 is a schematic structural view of an embodiment 2 of the gob-side entry driving side supporting device for the small coal pillars of the present invention;

fig. 6 is a schematic structural view of an embodiment 3 of the gob-side entry driving side supporting device for the small coal pillars.

In the attached drawings

Wherein the method comprises the following steps: main part frame 1, support stud 2, clamp plate 3, gland nut 4, support arm 5, pad foot 6, stock 7, guiding hole 8, accomodate groove 9, hang claw 10, push pedal 11, elastic support board 12, swivel nut 13, support shaped steel 14, steel band 15, main part board 16.

The specific implementation mode is as follows:

example 1:

the utility model relates to a stay little coal pillar gob entry group portion supporting device that digs is realized like this, by support stud 2, clamp plate 3, gland nut 4, support arm 5, fill up foot 6, stock 7, guiding hole 8, accomodate groove 9, hang claw 10, push pedal 11, spring support plate 12, swivel nut 13 and main part board 16 and constitute, main part board 16 is the arc platelike structure, the bottom both sides limit of main part board 16 extends downwards the arc respectively and forms two support arms 5, the bottom of support arm 5 is put and is filled up foot 6, main part board 16, support arm 5 and fill up foot 6 combination form main part frame 1, the one end of filling up foot 6 is bent downwards, hang claw 10 and arrange main part frame 1 top bottom in, hang claw 10 surface and put anti-skidding arch, it has guiding hole 8 to open on the main part board 16, it has a plurality of accomodating grooves 9 to open around angles such as guiding hole 8 on the main part board 16, accomodate groove 9 and guiding hole 8 and be linked together, the guide hole 8 and the accommodating groove 9 are combined to form a plum blossom-shaped structure, the anchor rod 7 penetrates through the guide hole 8, a plurality of elastic supporting plates 12 are arranged in the accommodating grooves 9 in a one-to-one correspondence mode, the push plate 11 is arranged on the elastic supporting plates 12, the push plate 11 is pressed on the anchor rod 7, the push plates 11 are combined to form a cylindrical structure, the surface, facing the anchor rod 7, of each push plate 11 is an arc concave surface and is attached to the anchor rod 7, each elastic supporting plate 12 is of a W-shaped structure, each elastic supporting plate 12 is formed by continuously bending a metal plate for three times, the bending angle position is in arc transition, the thread insert 13 is sleeved on the anchor rod 7, an internal thread is arranged on the inner side wall of the thread insert 13, an external thread is arranged on the outer side wall of the thread insert 13, the internal thread on the inner side wall of the thread insert 13 is in threaded connection with the anchor rod 7, a plurality of support studs 2 have been put to the equal angle on the clamp plate 3, support

stud

2 and 3 looks spiro couplings of clamp plate, and support 2 one end of stud and press and arrange in on the 16 arc convex surfaces of main part board, on swivel nut 13 was arranged in to gland nut 4 one end cover, on stock 7 was arranged in to the other end cover, be the step hole in the gland nut 4, and the diameter of gland nut 4 one end is greater than the diameter of the other end, the external screw thread looks spiro coupling on 4 one ends of gland nut and the 13 lateral walls of swivel nut, the 4 other ends of gland nut and stock 7 looks spiro couplings.

When in use, when the supporting section steel 14 is combined with a single supporting section steel 14 for supporting, the supporting section steel 14 presses on the coal pillar side part, a row of supporting devices are respectively arranged on two side plates of the supporting section steel 14, when the supporting devices are arranged, the hanging claws 10 are clamped at the tops of the side plates, the foot pads 6 are pressed at the bending angle positions on the bottom plate of the supporting section steel 14, the anchor rods 7 penetrate through the side plates of the supporting section steel 14 in an inclined mode and are inserted into the coal pillars, then the pressing plate 3 drives the supporting stud 2 to be pressed on the main body frame 1 by screwing the pressing nut 4, and further the main body frame 1 is pressed on the supporting section steel 14, the internal thread and the external thread of the compression nut 4 are not coaxial, and further can be clamped and fixed when the compression nut 4 is screwed, the coal pillar side part is supported, the anchor rod 7 is driven into the coal pillar during the supporting, and the connection stability between the supporting section steel 14 and rock walls and between the section bars is better;

the anchor rod 7 can deflect the interior of the guide hole 8 at a small angle, and the elastic support plate 12 can stretch appropriately in the deflection process, so that the anchor rod 7 can be matched with drill holes at different angles;

example 2:

the difference between the embodiment and the embodiment 1 is that when two adjacent supporting section steels 14 are matched for use, the hanging claws 10 of the supporting device are clamped on the top of the side plate of one of the supporting section steels 14, the pad feet 6 are pressed at the bending position of the bottom plate of the other supporting section steel 14, the anchor rods 7 are sequentially inserted obliquely from the side plate against which the two supporting section steels 14 lean, inserted from the bottom plate of one of the supporting section steels 14, then inserted into a coal pillar, and finally the compression nuts 4 are screwed to compress, clamp and fix, so that the two adjacent supporting section steels 14 are connected, the anchor rods 7 penetrate through the section steels for multiple times, the limiting performance on the supporting section steels 14 is good, and the supporting stability of the side parts is good;

example 3:

the difference between the embodiment and the embodiment 1 is that when the supporting section steel 14 and the steel strip 15 are matched with supporting positions to support in a combined mode, the supporting device hanging claws 10 are clamped at the top of the side plate of the supporting section steel 14, the pad feet 6 are clamped at the bending position of the steel strip 15, the anchor rods 7 are obliquely checked from the side plate of the supporting section steel 14, then sequentially penetrate through the bottom plate of the supporting section steel 14 and the steel strip 15 to be inserted into a coal pillar, finally, the compression nuts 4 are screwed to tightly compress, clamp and fix, and further, the supporting section steel 14 and the steel strip 15 are connected and fixed;

the surface of the hanging claw 10 is provided with the anti-skid bulge, so that the friction force between the hanging claw 10 and the supporting section steel 14 can be increased, and the clamping and fixing stability is improved;

one end of the foot pad 6 is bent downwards, so that the foot pad 6 can be conveniently pressed or clamped at the bent position;

the purpose of connecting and fixing the sectional materials and the rock walls is achieved by combining the existing sectional materials.

The above embodiments are the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Any person skilled in the art can make some modifications without departing from the scope of the invention, i.e. all equivalent modifications made according to the invention are intended to be covered by the scope of the invention.

It should also be noted that, unless otherwise specifically stated or limited, the terms "disposed on," "mounted on," "connected to" and "connected to" are to be construed broadly and may include, for example, a fixed connection such as a crimped connection, a riveted connection, a pinned connection, an adhesive connection, a welded connection, a removable connection such as a threaded connection, a snap connection, a hinged connection, an integral connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, and a communication between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Claims

1. The utility model provides a stay little pillar gob entry side supporting device that digs, characterized by: by supporting double-screw bolt, clamp plate, gland nut, support arm, pad foot, stock, guiding hole, accomodate the groove, hang claw, push pedal, elastic support plate, swivel nut and main part board and constitute, the main part board is arc platelike structure, the bottom both sides limit of main part board extends downwards the arc respectively and forms two support arms, the pad foot has been put to the bottom of support arm, main part board, support arm and pad foot combination form the main part frame, hang the claw and arrange main part frame top bottom in, it has the guiding hole to open on the main part board, it has a plurality of grooves of accomodating to wind the equidistance such as guiding hole and open on the main part board, accomodate groove and guiding hole and communicate, the guiding hole forms plum blossom-shaped structure with accomodating the groove combination, and the stock runs through the guiding hole, and a plurality of elastic support plates one-to-one arrange a plurality of accomodating inslot in, and the push pedal is arranged in on the stock, and a plurality, the push pedal is the arc concave surface towards the face of stock, and laminates mutually with the stock, and the swivel nut cover is arranged in on the stock, the internal thread has been put on the swivel nut inside wall, the external screw thread has been put on the swivel nut lateral wall, and internal thread and stock looks spiro union on the swivel nut inside wall, internal thread and external screw thread are not coaxial, and the clamp plate is arranged in on the swivel nut lateral wall, a plurality of support studs have been put to the equidistance on the clamp plate, support stud and clamp plate looks spiro union, and support stud one end pressure arrange in on the main part board arc convex surface, and gland nut one end cover is arranged in on the swivel nut, and on the stock was arranged in to the other end cover, be the step hole in the gland nut, and the diameter of gland nut one end is greater than the diameter of the other end, the external screw thread.

2. The gob-side entry wall support assembly for small-coal-pillar coal-mining as claimed in claim 1, wherein said resilient support plate is of "W" configuration.

3. The gob-side entry driving side support device according to claim 2, wherein said elastic support plate is formed by bending a metal plate three times in succession, and the bending angle position is an arc transition.

4. The gob-side entry side support device according to claim 1, wherein one end of said foot is bent downward.

5. The gob-side entry side support device for small coal pillars as set forth in claim 1, wherein said claw-retaining surface is provided with a nonslip projection.