CN220319592U - Protective device and shield support for steeply inclined coal seam - Google Patents

Abstract

The utility model relates to the technical field of coal mines, in particular to a protection device and a shield support for a steeply inclined coal seam, wherein the protection device comprises a first buffer structure and a second buffer structure, an elastic piece of the first buffer structure is arranged in a positioning cylinder, an outwards bulge along the opening direction is arranged in an annular shell, the bulge comprises a connecting part and a sliding part, the sliding part is embedded in the positioning cylinder, and the connecting part is connected with one end of the elastic piece; the interception net of the second buffer structure is arranged on the frame, and the frame is arranged on the annular shell. The first buffer structure and the second buffer structure are utilized to increase the buffer capacity of the protective device so as to protect the shield support, avoid the shield support from generating larger vibration and reduce the sound caused by falling of the coal pillar, thus being capable of reducing the psychological pressure of staff under the shield support.

Description

Protective device and shield support for steeply inclined coal seam

Technical Field

The disclosure relates to the technical field of coal mines, in particular to a protection device and a shield support for a steeply inclined coal seam.

Background

The steep coal seam mining method is a difficult problem in the mining technical field, has attracted attention from related departments of China, the steep coal seam of China is mostly distributed in small and medium mines, the geological condition of the coal seam is complex, the mining difficulty is high, partial coal seam faults are large, the reserves are small, the gas content is large, the storage condition is poor, and a plurality of problems exist in mining due to the specificity of the steep coal seam. The supporting equipment of the coal mine is an important guarantee for the safety of coal mine workers, particularly under the condition of a steeply inclined coal seam, the pressure from a roof coal seam is high, and safety accidents caused by poor supporting performance occur, so that the flexible supporting device for the steeply inclined coal seam is provided in China patent with the publication number of CN103291334B, the left supporting plate, the left top plate, the right top plate and the right supporting plate of the device are connected through hinges, the working angle can be adjusted through a hydraulic system, and the adjustability of the working angle is high, so that the supporting device has good adaptability to the roof coal seam. But after the shield support is installed over a certain distance, the gallery support is dismantled, so that the coal pillar above automatically falls or is blasted and falls, and the supporting beam of the shield support is provided with a coal and gangue cushion layer with the thickness of 2-3m for protecting the shield support.

Disclosure of Invention

The present disclosure provides a protection device and a shield support for a steeply inclined coal seam, so as to solve the technical problem that under the condition that the inventor recognizes that the inventor needs to blow down and collapse a coal pillar, and because of the self weight and the reaction force of the coal pillar caused by blasting, the protection device directly falls on a support beam, so that the vibration and the larger striking sound of the support beam are caused, and psychological pressure is easily caused to a worker under the shield support.

The present disclosure provides a guard comprising:

the first buffer structure comprises a supporting plate, a positioning cylinder, an elastic piece and an annular shell, wherein the positioning cylinder is arranged on the supporting plate, the elastic piece is arranged in the positioning cylinder, the annular shell is internally provided with a bulge outwards along the opening direction, the bulge comprises a connecting part and a sliding part, the sliding part is embedded in the positioning cylinder, and the connecting part is connected with one end of the elastic piece; and

the second buffer structure comprises a frame and an interception net, wherein the interception net is installed on the frame, and the frame is arranged on the annular shell.

In any of the above technical solutions, further, the protrusion has a circular hole, and the frame is provided with a fixing column, and the fixing column is inserted into the circular hole and can be fastened and connected with the circular hole.

In any of the above solutions, further, the elastic member may be any one of a coil spring, a gas spring, or a rubber spring.

In any of the above technical solutions, further, a chute is formed between the body of the annular housing and the protrusion, and an outer wall of the positioning cylinder is adapted to the chute.

The disclosure also provides a shield support for a steeply inclined coal seam, comprising the protective device.

In any of the above technical solutions, further comprising a supporting beam, wherein the supporting beam is provided with a threaded hole, a threaded end is mounted on the lower surface of the supporting plate, and the threaded end is adapted to the threaded hole.

In any one of the above technical solutions, further, four threaded holes are provided, and the four threaded holes are arranged at four corners of the support beam;

the number of the first buffer structures is matched with the number of the threaded holes; and

the number of the fixing columns is four, and the four fixing columns are arranged at four corners of the frame.

The beneficial effects of the present disclosure mainly lie in:

1. according to the method, the first buffer structure is formed by the design of the supporting plate, the positioning cylinder, the elastic piece and the annular shell, the second buffer structure is formed by the design of the frame and the interception net, the impact force of the blasting and caving coal pillar landing is reduced by the second buffer structure, a certain interception effect is achieved on the landing coal pillar, the coal pillar is prevented from directly landing on the shield support, and then striking sound generated between the coal pillar and the shield support is reduced; when the coal pillar falls on the second buffer structure, the second buffer structure continues to move downwards to a certain extent due to the gravity of the second buffer structure and the reaction force of the coal pillar caused by blasting, the buffer capacity of the protection device is further increased by the first buffer structure, and the buffer capacity can be kept by the elastic piece when the elastic piece is subjected to external force, so that the shield support is protected, and larger vibration of the shield support is avoided. The coal pillar with the structure is not in direct contact with the shield support, and plays a role in protecting the shield support, so that psychological pressure of workers under the shield support can be relieved.

2. The design through protruding, fixed column to make things convenient for the staff to accomplish first buffer structure and second buffer structure's installation fast.

3. The design of this disclosure through screw hole, screw end to make first buffer structure, second buffer structure adaptation be in the steep coal seam with the shield support, and make things convenient for the staff to accomplish the installation of first buffer structure and supporting beam, improve work efficiency.

It is to be understood that both the foregoing general description and the following detailed description are for purposes of example and explanation and are not necessarily limiting of the disclosure. The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate the subject matter of the present disclosure. Meanwhile, the description and drawings are used to explain the principles of the present disclosure.

Drawings

In order to more clearly illustrate the embodiments of the present disclosure or the prior art, the drawings that are required in the detailed description or the prior art will be briefly described, it will be apparent that the drawings in the following description are some embodiments of the present disclosure, and other drawings may be obtained according to the drawings without inventive effort for a person of ordinary skill in the art.

FIG. 1 is a schematic view of an assembled planar structure of a shield apparatus and a shield support for a steeply inclined coal seam in accordance with an embodiment of the present disclosure;

FIG. 2 is a schematic view of an assembled planar structure of a first cushioning structure and a second cushioning structure according to an embodiment of the present disclosure;

FIG. 3 is a schematic plan view of a second buffer structure according to an embodiment of the present disclosure;

FIG. 4 is an exploded cross-sectional schematic view of an assembly of a shield apparatus and a shield support for a steeply inclined coal seam in accordance with an embodiment of the present disclosure;

FIG. 5 is a schematic plan view of an elastic member according to an embodiment of the present disclosure in a compressed state;

fig. 6 is an exploded plan view of a first buffer structure according to an embodiment of the present disclosure.

Icon:

1-a first buffer structure; 2-supporting plates; 3-positioning a cylinder; 4-elastic members; a 5-ring housing; 6-bulge; 7-a junction; 8-a sliding part; 9-a second buffer structure; 10-frame; 11-an interception net; 12-round holes; 13-fixing the column; 14-sliding grooves; 15-supporting beams; 16-a threaded hole; 17-threaded end.

Detailed Description

The following description of the embodiments of the present disclosure will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all, of the embodiments of the present disclosure.

Based on the embodiments in this disclosure, all other embodiments that a person of ordinary skill in the art would obtain without making any inventive effort are within the scope of protection of this disclosure.

In the description of the present disclosure, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present disclosure. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present disclosure, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this disclosure will be understood by those of ordinary skill in the art in the specific context.

Referring to fig. 1, 2, 3, 4, 5 and 6, the present disclosure provides a protective device comprising: the first buffer structure 1 and the second buffer structure 9, the first buffer structure 1 comprises a supporting plate 2, a positioning cylinder 3, an elastic piece 4 and an annular shell 5, the positioning cylinder 3 is arranged on the supporting plate 2, the elastic piece 4 is arranged in the positioning cylinder 3, a bulge 6 outwards along the opening direction is arranged in the annular shell 5, the bulge 6 comprises a connecting part 7 and a sliding part 8, the sliding part 8 is embedded in the positioning cylinder 3, and the connecting part 7 is connected with one end of the elastic piece 4; and

the second cushioning structure 9 includes a frame 10 and an interception net 11, the interception net 11 is mounted on the frame 10, and the frame 10 is placed on the annular housing 5.

In any of the above technical solutions, further, the protrusion 6 has a circular hole 12, and the frame 10 is mounted with a fixing post 13, and the fixing post 13 is inserted into the circular hole 12 and can be fastened and connected with the circular hole.

In any of the above embodiments, further, the elastic member 4 may be any one of a coil spring, a gas spring, or a rubber spring.

In any of the above technical solutions, further, a chute 14 is formed between the body of the annular housing 5 and the protrusion 6, and the outer wall of the positioning cylinder 3 is adapted to the chute 14.

The disclosure also provides a shield support for a steeply inclined coal seam, comprising the protective device.

In any of the above technical solutions, further, the support beam 15 is further included, a threaded hole 16 is formed in the support beam 15, a threaded end 17 is mounted on the lower surface of the support plate 2, and the threaded end 17 is adapted to the threaded hole 16.

In any of the above technical solutions, further, four threaded holes 16 are provided, and the four threaded holes 16 are arranged at four corners of the supporting beam 15;

the number of the first buffer structures 1 is matched with the number of the threaded holes 16; and

the number of the fixing posts 13 is four, and the four fixing posts 13 are disposed at four corners of the frame 10.

Embodiments of the present application will be described in detail below with reference to specific examples, but it will be understood by those skilled in the art that the following examples are only for illustration of the present application and should not be construed as limiting the scope of the present application. The specific conditions are not noted in the examples and are carried out according to conventional conditions or conditions recommended by the manufacturer. The reagents or apparatus selected are not specific to the manufacturer and are conventional products commercially available.

Example 1

The first buffer structure 1 includes a support plate 2, a positioning cylinder 3, an elastic member 4 and a ring-shaped casing 5, the lower end of the positioning cylinder 3 is fixedly mounted on the upper surface of the support plate 2 through welding, the elastic member 4 can be any one of a coil spring, a gas spring or a rubber spring, the preferred spiral spring is adopted in this embodiment, the lower end of the elastic member 4 is fixed on the inner bottom of the positioning cylinder 3, the inside of the ring-shaped casing 5 is provided with a protrusion 6 outwards along the opening direction, the protrusion 6 and the ring-shaped casing 5 are integrally formed, the support plate 2 is of a ring-shaped structure and has the same outer diameter with the ring-shaped casing 5, the protrusion 6 includes a connecting portion 7 and a sliding portion 8, the peripheral wall of the protrusion 6 can be understood to be the sliding portion 8, the bottom wall of the protrusion 6 is the connecting portion 7, the sliding portion 8 is embedded on the positioning cylinder 3, a sliding groove 14 is formed between the body of the ring-shaped casing 5 and the protrusion 6, the outer wall of the positioning cylinder 3 is adapted to the sliding groove 14, that is the sliding portion 8 can slide in the positioning cylinder 3, the connecting portion 7 is fixedly connected with the upper end of the elastic member 4, specifically, the ring-shaped casing 5 is subjected to an external force, the elastic member 4 is compressed, and the elastic member 5 is subjected to the external force, and the elastic member 5 is restored to the original position, and the elastic member is restored to the original position after the elastic member is compressed, and the elastic member 5 is moved to the original position, and the elastic member is restored to the original position.

The second buffer structure 9 comprises a frame 10 and an interception net 11, the frame 10 is of a hollow frame body structure, the interception net 11 is fixedly arranged on the frame 10, namely, the interception net 11 is positioned at the hollow part of the frame body structure, a round hole 12 is formed in a bulge 6, a fixing column 13 is arranged on the frame 10, the fixing column 13 is inserted into the round hole 12 and can be in fastening connection with the round hole 12, the fastening connection can be understood that when the fixing column 13 is inserted into the round hole 12, the fixing column 13 can be separated from the round hole 12 only by receiving larger external force, and the larger external force is the force for an adult to insert and pull an object.

According to the method, the first buffer structure 1 is formed by the design of the supporting plate 2, the positioning cylinder 3, the elastic piece 4 and the annular shell 5, the second buffer structure 9 is formed by the design of the frame 10 and the interception net 11, the impact force of the blasting and caving coal pillar landing is reduced by using the second buffer structure 9, a certain interception effect is achieved on the landing coal pillar, the coal pillar is prevented from directly landing on the shield support, and then the impact sound generated between the coal pillar and the shield support is reduced; when the coal pillar falls on the second buffer structure 9, the second buffer structure 9 continues to move downwards with a certain amplitude due to the gravity of the coal pillar and the reaction force of the coal pillar caused by blasting, the buffer capacity of the protection device is further increased by the first buffer structure 1, and the buffer capacity can be kept by the elastic piece 4 when the elastic piece receives external force, so that the shield support is protected, and larger vibration of the shield support is avoided. The coal pillar with the structure is not in direct contact with the shield support, and plays a role in protecting the shield support, so that psychological pressure of workers under the shield support can be relieved.

The design of this disclosure through protruding 6, fixed column 13 to make things convenient for the staff to accomplish the installation of first buffer structure 1 and second buffer structure 9 fast.

Example two

The embodiment of the disclosure also provides a shield support for a steeply inclined coal seam, which comprises the protection device according to any one of the technical schemes, so that the shield support has all the beneficial technical effects of the protection device, and is not repeated herein.

Specifically, the support beam 15 is further included, threaded holes 16 are formed in the support beam 15, four threaded holes 16 are formed in the number of the threaded holes 16, four threaded holes 16 are formed in four corners of the support beam 15, threaded ends 17 are fixedly mounted on the lower surface of the support plate 2 through welding, the threaded ends 17 are adapted to the threaded holes 16, a worker can connect or detach the support portion with the threaded holes 16 of the support beam 15 by using a tool or a hand, the number of the first buffer structures 1 is also four, so that the number of the threaded ends 17 is adapted to the number of the threaded holes 16, the number of the fixing columns 13 is also four, the four fixing columns 13 are arranged at four corners of the frame 10, and the four fixing columns 13 are respectively sleeved in round holes 12 of the protrusions 6 of the four first buffer structures 1.

The design through screw hole 16, screw end 17 to make first buffer structure 1, second buffer structure 9 adaptation be in the steep coal seam and use the shield support, and make things convenient for the staff to accomplish the installation of first buffer structure 1 and supporting beam 15, improve work efficiency.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present disclosure, and not for limiting the same; although the present disclosure has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present disclosure.

Claims (7)

1. A protective device, comprising:

the first buffer structure comprises a supporting plate, a positioning cylinder, an elastic piece and an annular shell, wherein the positioning cylinder is arranged on the supporting plate, the elastic piece is arranged in the positioning cylinder, the annular shell is internally provided with a bulge outwards along the opening direction, the bulge comprises a connecting part and a sliding part, the sliding part is embedded in the positioning cylinder, and the connecting part is connected with one end of the elastic piece; and

the second buffer structure comprises a frame and an interception net, wherein the interception net is installed on the frame, and the frame is arranged on the annular shell.

2. The guard of claim 1 wherein the boss has a circular aperture and the frame has a mounting post mounted thereon, the mounting post being insertable into the aperture and being capable of being secured thereto.

3. The guard of claim 2, wherein the resilient member is any one of a coil spring, a gas spring, or a rubber spring.

4. A protective device according to claim 3, wherein a chute is formed between the body of the annular housing and the projection, the outer wall of the positioning cylinder being adapted to the chute.

5. A shield support for a steeply inclined coal seam comprising a guard as claimed in claim 4.

6. A shield support for a steeply inclined coal seam as claimed in claim 5, further comprising a support beam having a threaded bore formed therein, the lower surface of the support plate having a threaded end mounted thereon, the threaded end being adapted to the threaded bore.

7. A shield support for a steeply inclined coal seam as claimed in claim 6, wherein four threaded holes are provided, and four threaded holes are provided at four corners of the support beam;

the number of the first buffer structures is matched with the number of the threaded holes; and

the number of the fixing columns is four, and the four fixing columns are arranged at four corners of the frame.