WO2022198760A1

WO2022198760A1 - Underground mining support apparatus having guard plates

Info

Publication number: WO2022198760A1
Application number: PCT/CN2021/092170
Authority: WO
Inventors: 李信斌
Original assignee: 李信斌
Priority date: 2021-03-23
Filing date: 2021-05-07
Publication date: 2022-09-29
Also published as: CN214424527U

Abstract

An underground mining support apparatus having guard plates, comprising a connected crossed support and guard plates (2) provided on two sides of the connected crossed support. A first telescopic driving device (21) and a short joist (22) are provided in a joist (12) of the connected crossed support; the telescopic end of the first telescopic driving device is connected to one end of the short joist; the first telescopic driving device drives the short joist to move along the joist; the other end of the short joist is connected to the guard plate; the top of the guard plate is not lower than 300 mm below the joists of the connected crossed support and not higher than the top beams (11) of the connected crossed support. The guard plates of the underground mining support apparatus have a large area of contact with side guards and a large protection force, can effectively protect high side guards, can effectively prevent the collapse and caving of the high side guards, and can expand and contract without affecting forward movement of the support apparatus.

Description

Underground mining support equipment with guard plate

technical field

The utility model relates to the technical field of underground mining, and more particularly, the utility model relates to an underground mining support device with a guard plate.

Background technique

When carrying out underground mining operations, such as mining coal mines, it is necessary to set up support equipment in the mining face tunnel and the end of the working face to support the roof of the working face and protect the safety of construction workers.

Patent document CN102454410A discloses a support device for coal mines. The support device for coal mines is a row-type support, which can be used in working face tunnels or working face ends. As shown in Figures 1 and 2, the supporting equipment for coal mines has two row supports 1 with the same structure, wherein each row support includes at least two top beams 11 and at least two joists 12. The top beams 11 and the joists 12 are arranged in a horizontal direction, the top beam 11 is located above the joists 12, and a column 13 is arranged below each row of brackets, and the two row-type brackets have a distance, two row-type brackets. A hydraulic propelling cylinder 14 is arranged between the brackets, and under the action of the hydraulic propelling cylinder 14, the two rows of brackets can move forward relative to each other. Therefore, the supporting force of the supporting device on the working top surface is uniform and uninterrupted during use, which is very safe.

However, during the mining process of the roadway, the side of the roadway will collapse and cause damage to personnel and equipment. Therefore, it is necessary to protect the side of the support equipment. The commonly used method is to set up guards on the side for protection. However, the existing guards only protect the middle and low positions of the support equipment, and in the actual roadway, the high positions of the side guards are more dangerous. Moreover, the existing support parts have little support force, and even only one line is in contact with the side parts, which cannot prevent the high-position side parts from slumping.

Therefore, there is provided a support device that can protect the high-position side rails and has a large area of the side rails.

technical problem

The embodiment of the present utility model provides an underground mining support device with a guard plate. The support plate of the underground mining support equipment has a large contact area with the side help, and has a large supporting force, and can effectively protect the high position of the side help. It can effectively prevent the collapse and slump of the high-position side rails; moreover, it can expand and contract without affecting the forward movement of the support equipment. Therefore, the problems that the existing support equipment has a small support area and lacks protection for high positions are solved.

technical solutions

To this end, the embodiments of the present utility model provide the following technical solutions:

The embodiment of the present utility model provides an underground mining support device with a guard plate, which includes a row-type bracket and a guard plate arranged on both sides of the row-type bracket. A first telescopic drive device and a short joist are provided, the telescopic end of the first telescopic drive device is connected with one end of the short joist, and the first telescopic drive device drives the short joist along the joist Move, the other end of the short joist is connected with the guard board, and the top of the guard board is not lower than 300mm below the joist of the row-type bracket and not higher than the row-type bracket. top beam.

Further, the shape of the guard board matches the shape of the side walls, the side roof or the surrounding rock at the junction of the side guard and the side roof, and the top of the guard board is a transitional curved surface from the outer side to the upper side.

Further, the heights of the tops of the guard plates on both sides of the row-type brackets are the same or different.

Further, the side portion of the row-type bracket is further provided with a front-exploration guard plate for protecting the front portion of the row-type bracket, and the front-detection guard plate is fixedly connected or integrally formed with the guard plate.

Further, the guard board covers all the pillars on the side where it is located in the horizontal direction.

Further, the number of the side guards on one side of the row-type bracket is one or more, and the plurality of the guards are arranged along the height direction of the pillars, and the guards in the low position are connected to the short side by the connecting plate. Joist connection.

Further, the number of guards on one side of the row-type bracket is multiple, and the plurality of guards are arranged in the horizontal direction, and one guard covers one or more pillars in the horizontal direction, and the guards are arranged in the horizontal direction. The plurality of guard boards arranged in the direction are provided with the same height or staggered arrangement in the height direction of the pillar.

Further, a base is fixed at the bottom of the pillar covered by the same guard plate, and one or more guide columns are arranged on the base in the same direction as the support column, and one guard plate covers all the supports and guide columns on the same base.

Further, a second telescopic drive device is also provided between the guard board and the row-type bracket, the power end of the second telescopic drive device is connected with the guide column, and the second telescopic drive device is The telescopic end is connected with the guard board.

Further, the second telescopic driving device is arranged obliquely, and the power end of the second telescopic driving device is higher than the telescopic end.

beneficial effect

The beneficial effects of the present utility model are:

(1) The guard plate of the underground mining support equipment with guard plate of the present utility model has a large contact area with the side gang, and the protective force is large, and can effectively protect the high position of the side gang, and can effectively prevent the collapse of the high-position side gang, caving; moreover, it can be retracted without affecting the forward movement of the support equipment.

(2) The shape of the guard plate of the present utility model matches the shape of the side walls, the side roof or the surrounding rock at the junction of the side walls and the side roof, and can fully contact the surrounding rock for high-level protection.

(3) The underground mining support equipment with a guard plate of the present utility model is provided with a forward detection guard plate, which can effectively protect the front part of the underground mining support equipment, and the most difficult front high side of the roadway to support is protected. Help support.

(4) The guard board of the present invention can support the side guard without gap, and can also set the arrangement form of the guard board according to the specific conditions of the roadway, which is easy to install and has a good supporting effect.

(5) The underground mining support equipment with a guard plate of the present invention is also provided with a second telescopic drive device, which cooperates with the first telescopic drive device to improve the guard force and make the protection more reliable.

Description of drawings

In order to explain the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the description of each embodiment. Obviously, the drawings in the following description are only some of the present invention. Embodiments For those skilled in the art, other drawings can also be obtained according to the drawings in the following specific description of the present invention without creative effort.

Fig. 1 is the front view of the existing row-type bracket;

Fig. 2 is the bottom view of the existing row-type bracket;

Fig. 3 is the front view of the underground mining support equipment provided with the guard plate provided by the first embodiment of the present invention;

Figure 4 is a front view of the underground mining support equipment provided with a guard plate provided by the second embodiment of the present invention;

Fig. 5 is the side view of the underground mining support equipment provided with the guard plate provided by the third embodiment of the present invention;

Fig. 6 is the side view of the underground mining support equipment provided with the guard plate provided by the fourth embodiment of the present invention;

FIG. 7 is a side view of the underground mining support equipment with a guard plate provided by the fifth embodiment of the present invention;

8 is a side view of the underground mining support equipment provided with a guard plate provided by the sixth embodiment of the present invention;

Figure 9 is a side view of the underground mining support equipment provided with a guard plate provided by the seventh embodiment of the present invention;

Fig. 10 is a side view of the underground mining support equipment provided with the guard plate provided by the eighth embodiment of the present invention;

Fig. 11 is a front view of the underground mining support equipment provided with a guard plate provided by the ninth embodiment of the present invention.

In the figure,

1. Row bracket; 11. Top beam; 12. Joist; 13. Pillar; 14. Hydraulic propulsion cylinder;

2. Help plate; 21. The first telescopic drive device; 22. Short joist; 23. Connecting plate;

3. Front exploration guard board;

4. The base; 41. The guide column; 42. The second telescopic drive device.

Embodiment of the present invention

The technical solution of the underground mining support equipment with a guard plate provided by the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present invention.

In this application, the word "exemplary" is used to mean "serving as an example, illustration or illustration". Any embodiment of this disclosure described as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. To enable any person skilled in the art to make and use the present invention, the following description is given. In the following description, details of the invention are set forth for the purpose of explanation. It should be understood that one of ordinary skill in the art may realize that the present invention may be practiced without the use of these specific details. In other instances, well-known structures and procedures have not been described in detail so as not to obscure the description of the invention with unnecessary detail. Thus, the present invention is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed herein.

It should be understood that the terms described in the present invention are only used to describe particular embodiments, and are not used to limit the present invention. Additionally, for numerical ranges in the present disclosure, it should be understood that the upper and lower limits of the range and every intervening value therebetween are specifically disclosed. Every smaller range between any stated value or intervening value in a stated range and any other stated value or intervening value in that stated range is also encompassed within the invention. The upper and lower limits of these smaller ranges may independently be included or excluded in the range. "%" in this utility model represents mass percentage unless otherwise specified.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention relates. Although only the preferred methods and materials are described herein, any methods and materials similar or equivalent to those described herein can also be used in the practice or testing of the present invention. All documents mentioned in this specification are incorporated by reference for the purpose of disclosing and describing the methods and/or materials in connection with which the documents are referred. In the event of conflict with any incorporated document, the content of this specification controls.

Furthermore, the terms "first", "second", "third", etc. are used for descriptive purposes only, and should not be understood as indicating or implying relative importance or implying the number of technical features indicated. Thus, features defined as "first", "second", "third" may expressly or implicitly include one or more features. In the description of the present invention, "plurality" means two or more, unless otherwise expressly and specifically defined.

This embodiment specifically discloses an underground mining support device with a guard plate, which includes a row-type bracket and a guard plate 2 arranged on both sides of the row-type bracket, and the row-type bracket is used to support the working top surface. As shown in FIGS. 1 and 2 , the row-type bracket includes two row-type brackets 1 with the same structure, each row-type bracket 1 includes at least two top beams 11 and at least two joists 12 , the top beams 11 and the joists 12 are arranged in a cross, preferably, the top beam 11 and the joist 12 cross at an angle of 90°, the top beam 11 is located above the joist 12, and a column 13 is provided below each row-type bracket 1, and the column 13 can use hydraulic jacks , There is a distance between the two row supports 1, and a hydraulic propelling cylinder 14 is arranged between the two row brackets 1. Under the action of the hydraulic propelling cylinder 14, the two row brackets 1 can be moved forward relative to each other. The surface provides uninterrupted support. In this embodiment, as shown in FIG. 3 , a first telescopic drive device 21 and a short joist 22 are provided in the joist 12 of the row-type bracket, and the telescopic end of the first telescopic drive device 21 is connected to the short joist 22 . One end is connected, the first telescopic drive device 21 drives the short joist 22 to move along the joist 12, the other end of the short joist 22 is connected with the guard plate 2, and the top of the guard plate 2 is not lower than the joist of the row-type bracket 300mm below 12 and not higher than the top beam 11 of the row bracket.

In this embodiment, the first telescopic drive device 21 is a hydraulic jack, the cylinder of the hydraulic jack is fixedly connected to the joist 12, the telescopic rod of the hydraulic jack is fixedly connected to the short joist 22, and the telescopic rod of the hydraulic jack drives the short joist 22 is telescopic, so that the guard board 2 is in a retracted position when the row-type support is walking; when the row-type support normally supports the working face top plate, the guard board 2 is in the first telescopic drive device 21 and the short joist 22. Under the action, it protrudes to the outside, and the guard plate 2 is directly attached to the surrounding rock of the high-level side. The short joist 22 is pushed sideways by the first telescopic drive device 21 in the joist 12, the bearing capacity of the short joist 22 is higher than the transverse shear force of the jack cylinder, and the bearing capacity and the supporting force are larger. Hydraulic jacks can be selected with larger diameters to meet the requirements of larger support force.

The shape of the guard plate 2 matches the shape of the surrounding rock at the junction of the side help, the side top or the side cover and the side ceiling, and the top of the guard board 2 is a transition surface from the outer side to the upper side. The shape of the top of the guard plate 2 matches the shape of the surrounding rock to provide better supporting force.

The top of the guard plate 2 is not higher than the top beam 11, and the top beam 11 still plays the role of supporting the top plate of the working face; the top of the guard plate 2 is not lower than 300mm below the joist 12, which can well protect the high position of the side and effectively Prevent the collapse of the high side gang from collapsing. The bottom of the guard plate 2 can be set according to actual protection requirements, and can completely cover the pillars 13 , completely protect the sides, or partially cover the pillars 13 . The guard plate can also press the top net to turn into a metal net at the position of the help net, so that the net is no longer arched out. The guard plate 2 can cover a small section of the surrounding rock roof at the edge of the roof beam 11 while playing the role of guard.

In this embodiment, the guard board can have a certain thickness, so the surrounding rock roof with a width of about 200 mm near the side guard is also protected. Since the guard board is based on the short joist 22 in the joist 12 as the thrust base, the height from the lower edge of the joist 12 to the top of the top beam 11 is about 500mm, so the height of the guard board is about one meter, and the force is very high. Balanced, the guard board can also be made higher. It can support the high-position side of about 1 meter with full contact and initial support.

The heights of the tops of the guard boards 2 on both sides of the row-type bracket may be the same or different. As shown in FIG. 4 , in the second embodiment, the top of one side of the guard board 2 is flush with the position 300mm below the joist 12, that is, the top of the guard board 2 is 300mm lower than the bottom of the joist 12, and the other The top of the side fender 2 is flush with the top of the top beam 11 .

In the third embodiment, as shown in FIG. 5 , on the basis of the above-mentioned embodiment, the side part of the row-type bracket is further provided with a front-detection guard plate 3 for protecting the front part of the row-type bracket. The support plate 3 is fixedly connected or integrally formed with the support plate 2 . The front probing guard board 3 can be a whole board with the same height as the guard board 2, or can be a plurality of boards arranged in parallel up and down. The horizontal length of the front-exploration guard board 3 is about 3 meters, and the high-position side guard at the front of the roadway, which is the most difficult to support, is also supported.

In the fourth embodiment, as shown in FIG. 6 , the guard board 2 covers all the pillars 13 on its side in the horizontal direction, that is, the guard board 2 is a whole board in the horizontal direction, which can be supported without gaps. side guard. The guard board can be connected only with the short joist 22 in one joist 12 and the first telescopic drive device 21, or can be driven simultaneously by the first telescopic drive devices 21 in multiple joists 12 in the same row of brackets 1 telescopic.

The number of the guard plates 2 on one side of the row-type bracket is one or more, and the number of the guard plates 2 shown in FIG. 6 is one. As shown in FIG. 7 , there are multiple guard boards 2 , and the multiple guard boards 2 are arranged along the height direction of the pillar 13 . Specifically, as shown in FIG. 7 , the number of guard plates 2 is 2, the guard plates 2 in the high position are connected with the first, third and fifth short joists, and the guard plates 2 in the low position pass through the connecting plate 23 Connect to the second and fourth short joists. A plurality of guard plates 2 are combined to protect the side of the underground mining equipment. The plurality of guard boards are driven by the first telescopic driving device 21 to expand and contract simultaneously.

There are multiple guard boards 2 on one side of the row-type bracket, and multiple guard boards 2 are arranged in the horizontal direction. One guard board 2 can cover one or more pillars 13 in the horizontal direction, and the guard boards 2 In the height direction of the pillars 13, the plurality of cloth guards 2 are arranged at the same height or are arranged in a staggered manner.

As shown in FIG. 8 , one guard board 2 covers one pillar 13 , multiple guard boards 2 are at the same height in the horizontal direction, and the horizontal lengths of the multiple guard boards 2 can be the same or different, and are designed according to specific protection needs. .

As shown in FIG. 9 , one guard board 2 covers one pillar 13 , and a plurality of guard boards are arranged in a staggered height.

As shown in FIG. 10 , a base 4 is fixed at the bottom of the pillar 13 covered by the same guard plate 2 , and one or more guide columns 41 are arranged on the base 4 in the same direction as the support 13 , and one guard board 2 covers the same base 4 . The support column 13 and the guide column 41. The guide column 41 is a telescopic column, and the guide column 41 expands and contracts with the expansion and contraction of the support column 13 . The pillars 13 and the guide pillars on the same base 4 form a set of support units, and one side guard 2 covers one support unit. The number of pillars 13 on the same base 4 may be one or more, and the number of guide pillars 41 may also be one or more. The number of pillars 13 and guide pillars 41 of the same support unit is set as required.

As shown in FIG. 11 , in the underground mining support equipment shown in FIG. 10 , in this embodiment, a second telescopic drive device 42 is further provided between the support plate 2 and the row-type support. The second telescopic drive device The power fluid interface end of 42 is connected with the guide column 41 , and the telescopic end of the second telescopic drive device 42 is connected with the guard plate 2 . Further, the second telescopic drive device 42 is disposed obliquely, and the power fluid interface end of the second telescopic drive device 42 is higher than the telescopic end. In this embodiment, the height of the guard plate 2 is relatively large. Preferably, the guard plate 2 can completely cover the support column 13 , and the second telescopic driving device 42 increases the guard force. In this embodiment, the second telescopic drive device 42 is a hydraulic jack, and the joint end of the hydraulic jack with the inlet and outlet hoses is installed at the high position of the row bracket 1, so that the hose is not easily damaged by scratching, and the movable end of the hydraulic jack faces Protruding from the bottom of the side to avoid damage to the hose. This allows the short joists to carry the downward shear force that is created on the short joists 22 .

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and simple improvements made on the substance of the present invention shall be included in the present invention. within the scope of protection.

Industrial Applicability

The support plate of the underground mining support equipment provided with the support plate of the utility model has a large contact area with the side walls, and has a large support force, and can effectively protect the high position of the side walls, and can effectively prevent the collapse and collapse of the high-level side walls; Moreover, it can be extended and retracted without affecting the forward movement of the support equipment, so as to better solve the problems of the existing support equipment with a small support area and lack of protection for high positions.

Claims

An underground mining support device with a guard plate, comprising a row-type support and a guard plate (2) arranged on both sides of the row-type bracket, and a joist (12) of the row-type bracket is provided. A first telescopic drive device (21) and a short joist (22) are provided inside, the telescopic end of the first telescopic drive device (21) is connected to one end of the short joist (22), and the first telescopic drive device (21) is connected to one end of the short joist (22). A driving device (21) drives the short joist (22) to move along the joist (12), the other end of the short joist (22) is connected with the guard plate (2), and the guard The top of the plate (2) is not lower than 300mm below the joists (12) of the row-type bracket and not higher than the top beam (11) of the row-type bracket.
The underground mining and support equipment with a guard plate according to claim 1, wherein the shape of the guard plate (2) matches the shape of the surrounding rock at the junction of the side rail, the side roof or the side rail and the side roof, The top of the guard plate (2) is a transitional curved surface from the outer side to the upper side.
The underground mining support equipment with guard plates according to claim 1, wherein the top heights of the guard plates (2) on both sides of the row-type support are the same or different.
The underground mining support equipment with a guard plate according to claim 1, wherein the side part of the row-type support is further provided with a forward-exploring guard plate (3) for protecting the front part of the row-type support, The front probing guard plate (3) is fixedly connected or integrally formed with the guard guard (2).
The underground mining support equipment with a guard board according to claim 1, wherein the guard board (2) covers all the pillars (13) on the side where the guard board (2) is located in the horizontal direction.
The underground mining support equipment with a guard plate according to claim 5, wherein the number of guard plates (2) on one side of the row-type support is one or more, and a plurality of the guard plates ( 2) Arranged along the height direction of the pillars (13), and the guard plate (2) in a low position is connected with the short joist through the connecting plate (23).
The underground mining support equipment with a guard plate according to claim 1, wherein the number of guard plates (2) on one side of the row-type support is multiple, and a plurality of the guard plates (2) Arranged in the horizontal direction, one guard board (2) covers one or more pillars (13) in the horizontal direction, and a plurality of guard boards (2) arranged in the horizontal direction are arranged in the height direction of the pillars (13) Same height or high and low staggered settings.
The underground mining support equipment with a guard plate according to claim 7, wherein a base (4) is fixed at the bottom of the pillar (13) covered by the same guard plate (2), and the base (4) is provided with a base (4). One or more guide pillars (41) in the same direction as the pillars (13), and a guard plate (2) covers all pillars (13) and guide pillars (41) on the same base (4).
The underground mining support equipment with a guard plate according to claim 8, wherein a second telescopic drive device (42) is further provided between the guard plate (2) and the row-type support, so The power end of the second telescopic drive device (42) is connected with the guide column (41), and the telescopic end of the second telescopic drive device (42) is connected with the guard plate (2).
The underground mining support equipment with a guard plate according to claim 9, wherein the second telescopic driving device (42) is arranged obliquely, and the power end of the second telescopic driving device (42) is higher than the telescopic end .