Gangue leakage prevention device used between telescopic beam frames of coal mine hydraulic support

Abstract

The utility model discloses a gangue leakage prevention device used between telescopic beam frames of hydraulic supports of a coal mine, which is used between telescopic beams of two adjacent hydraulic supports side by side and comprises a horizontally arranged baffle plate, the telescopic beams of the two hydraulic supports which are adjacent side by side are called a left telescopic beam and a right telescopic beam respectively; the baffle plate is upwards provided with a connecting structure, and the baffle plate is connected with the left telescopic beam or the right telescopic beam through the connecting structure; the upper surface of the shielding plate is in sliding fit with the lower surfaces of the left telescopic beam and the right telescopic beam. A buffer block is fixedly connected to the front end of the baffle plate, upwards protrudes out of the baffle plate and backwards abuts against the front end of the left telescopic beam and the front end of the right telescopic beam, and a tooth-shaped structure is arranged at the front end of the buffer block. The connecting structure comprises a connecting vertical plate protruding upwards in the middle of the upper surface of the shielding plate, and the connecting vertical plate is used for being fixedly connected with the right telescopic beam. The gap between the telescopic beams of the two hydraulic supports which are adjacent side by side can be effectively protected, and an effective protection effect can also be achieved during the moving period of the hydraulic supports.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mine operation, in particular to a hydraulic support anti-leakage gangue technology. Background Art

[0002] During coal mining operations, the tunnel roof needs to be supported. Compared with traditional support methods such as wooden pillars, steel pillars, anchor rods and anchor cables, hydraulic supports have the advantages of strong adjustment ability, high installation and movement efficiency, convenient reuse on different working surfaces, strong safety, strong environmental adaptability, etc., and therefore have been widely used.

[0003] The hydraulic support has a top beam, and the top beam has a telescopic beam. As the working face advances, the hydraulic support needs to move forward in a coordinated manner. When moving forward, the telescopic beam is extended first and then retracted after the hydraulic support moves forward as a whole, so as to maintain continuous and seamless support for the tunnel roof.

[0004] When the width of the tunnel requires more than two hydraulic supports to be supported side by side, there will be a gap between the top beams of two adjacent hydraulic supports, and gangue may leak in the gap, threatening the safety of the tunnel.

[0005] The existing technology for preventing the leakage of gangue is to set side guard plates on the top beams of two adjacent hydraulic supports, the two side guard plates are arranged opposite to each other and form a V-shaped groove under the action of spring force, and the gap between the top beams of the two adjacent hydraulic supports is supported by the V-shaped groove. This technology has its shortcomings:

[0006] 1. The protection position is between the top beams of two adjacent hydraulic supports side by side, and the gap between the telescopic beams of two adjacent hydraulic supports side by side cannot be protected.

[0007] 2. It is not suitable for mobile protection and cannot be directly installed on the telescopic beam. In addition, the V-shaped groove is surrounded by two side guard plates that are not fixed. When the gangue in the V-shaped groove is heavy, it may break through the V-shaped groove and leak out, threatening the safety of the tunnel. Utility Model Content

[0008] The utility model aims to provide a device for preventing gangue leakage between telescopic beams of hydraulic supports in coal mines, which can effectively protect the gap between the telescopic beams of two adjacent hydraulic supports and can also play an effective protective role during the hydraulic support frame movement.

[0009] To achieve the above-mentioned purpose, the utility model is a device for preventing gangue leakage between telescopic beams of a coal mine hydraulic support, which is used between telescopic beams of two adjacent hydraulic supports arranged side by side, and includes a horizontally arranged shielding plate; the telescopic beams of the two adjacent hydraulic supports arranged side by side are respectively called a left telescopic beam and a right telescopic beam;

[0010] A connecting structure is provided upwardly on the shielding plate, and the shielding plate is connected to the left telescopic beam or the right telescopic beam through the connecting structure; the upper surface of the shielding plate is slidably matched with the lower surface of the left telescopic beam and the right telescopic beam.

[0011] A buffer block is fixedly connected to the front end of the shielding plate. The buffer block protrudes upward from the shielding plate and abuts against the front ends of the left telescopic beam and the right telescopic beam backward. The front end of the buffer block has a toothed structure.

[0012] The connection structure comprises a connection vertical plate which protrudes upwards in the middle of the upper surface of the shielding plate, and the connection vertical plate is used for fixed connection with the right telescopic beam.

[0013] The utility model has the following advantages:

[0014] The utility model has a simple structure, and the shielding plate moves with one of two adjacent telescopic beams (the telescopic beam needs to be extended forward), so that the gap between the two telescopic beams can be effectively protected in time.

[0015] The buffer block can press forward on the rear end of the top beam of the front hydraulic support, forming a buffer protection between the top beams and telescopic beams of the front and rear adjacent hydraulic supports, avoiding the collision between the telescopic beam of the rear hydraulic support and the rear end of the top beam of the front hydraulic support when the telescopic beam extends forward during the frame shifting process, and effectively protecting the front end of the telescopic beam of the rear frame and the rear end of the top beam of the front frame. The toothed structure can form a large contact friction between the telescopic beam of the rear frame and the top beam of the front frame, and the front frame and the rear frame can cooperate more firmly after the hydraulic support is installed.

[0016] If there is no connecting vertical plate, the shielding plate and the telescopic beam will have to be connected in an up-and-down manner. Combined with the structure of the existing hydraulic support telescopic beam, this connection method will cause structural interference and is difficult to implement. The connecting vertical plate changes the up-and-down connection to a left-and-right connection, which facilitates the connection of the anti-leakage gangue structure and the telescopic beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model.

[0018] Figure 2 yes Figure 1 Top view of the .

[0019] Figure 3 It is a three-dimensional structural schematic diagram of the utility model.

[0020] Figure 4 The utility model is a three-dimensional structural schematic diagram of the utility model installed between telescopic beams of two hydraulic supports adjacent to each other. DETAILED DESCRIPTION

[0021] The utility model takes the advancing direction of the hydraulic support as the forward direction.

[0022] like Figures 1 to 4 As shown, the utility model of the anti-leakage device for the telescopic beams of the coal mine hydraulic support is used between the telescopic beams of two adjacent hydraulic supports 1 side by side, and includes a horizontally arranged shielding plate 4; the telescopic beams of the two adjacent hydraulic supports 1 side by side are respectively called the left telescopic beam 2 and the right telescopic beam 3;

[0023] The shielding plate 4 is provided with a connecting structure upward, and the shielding plate 4 is connected to the left telescopic beam 2 or the right telescopic beam 3 through the connecting structure; the upper surface of the shielding plate 4 is slidably matched with the lower surface of the left telescopic beam 2 and the right telescopic beam 3.

[0024] The utility model has a simple structure, and the shielding plate 4 moves with one of the two adjacent telescopic beams (the telescopic beam needs to be extended forward), so that the gap between the two telescopic beams can be effectively protected in time.

[0025] A buffer block 5 is fixedly connected to the front end of the shielding plate 4. The buffer block 5 protrudes upward from the shielding plate 4 and abuts against the front ends of the left telescopic beam 2 and the right telescopic beam 3 backward. The front end of the buffer block 5 has a toothed structure 6.

[0026] The buffer block 5 can press forward on the rear end of the top beam of the front hydraulic support 1, forming a buffer protection between the top beams and telescopic beams of the front and rear adjacent hydraulic supports 1, avoiding the collision between the telescopic beam of the rear hydraulic support 1 and the rear end of the top beam of the front hydraulic support 1 when the telescopic beam is extended forward during the frame shifting process, and effectively protecting the front end of the telescopic beam of the rear frame and the rear end of the top beam of the front frame. The toothed structure 6 can form a large contact friction between the telescopic beam of the rear frame and the top beam of the front frame, and the front frame and the rear frame can be more firmly matched after the hydraulic support 1 is installed.

[0027] The connection structure includes a connection vertical plate 7 protruding upwardly in the middle of the upper surface of the shielding plate 4 , and the connection vertical plate 7 is used for fixed connection with the right telescopic beam 3 .

[0028] If there is no connecting vertical plate 7, the shielding plate 4 and the telescopic beam will have to be connected in an up-down manner. Combined with the structure of the telescopic beam of the existing hydraulic support 1, such a connection method will cause structural interference and is difficult to implement. The connecting vertical plate 7 changes the up-down connection into a left-right connection, which facilitates the connection between the anti-leakage gangue structure and the telescopic beam.

[0029] The utility model is a supplement to the anti-leakage gangue structure between the top beam bodies between two hydraulic supports 1, and the protection position is the gap between the two telescopic beams.

[0030] When in use, two adjacent hydraulic supports 1 with the utility model are arranged side by side to support the tunnel roof in the tunnel. During operation, the shielding plate 4 is extended and retracted synchronously with the right telescopic beam 3. When the frame is moved forward, the right telescopic beam 3 is first extended forward, and then the left telescopic beam 2 is extended forward. In this way, after the first telescopic beam (right telescopic beam 3) is extended, the gap between the two telescopic beams is shielded and protected, and the new protection position in front can be protected in time during the frame moving process. After the overall frame (hydraulic support 1) is moved, if the movement amplitude is small, the protection position of the shielding plate 4 in front of the moving frame is protected by the anti-leakage gangue structure between the original top beam body; if the movement amplitude is large, the protection position of the shielding plate 4 in front of the moving frame is protected by the anti-leakage gangue device of the hydraulic support 1 at the rear.

[0031] The above embodiments are only used to illustrate rather than limit the technical solutions of the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art should understand that the present invention can still be modified or replaced by equivalents. Any modification or partial replacement that does not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A device for preventing gangue leakage between telescopic beams of hydraulic supports in coal mines, characterized by: Used between the telescopic beams of two adjacent hydraulic supports, including a horizontally arranged shielding plate; the telescopic beams of the two adjacent hydraulic supports are respectively referred to as a left telescopic beam and a right telescopic beam; A connecting structure is provided upwardly on the shielding plate, and the shielding plate is connected to the left telescopic beam or the right telescopic beam through the connecting structure; the upper surface of the shielding plate is slidably matched with the lower surface of the left telescopic beam and the right telescopic beam.

2. The device for preventing gangue from leaking between telescopic beams of hydraulic supports in coal mines according to claim 1 is characterized in that: A buffer block is fixedly connected to the front end of the shielding plate. The buffer block protrudes upward from the shielding plate and abuts against the front ends of the left telescopic beam and the right telescopic beam backward. The front end of the buffer block has a toothed structure.

3. The device for preventing gangue leakage between telescopic beams of hydraulic support in coal mines according to claim 1 or 2, characterized in that: The connection structure comprises a connection vertical plate which protrudes upwards in the middle of the upper surface of the shielding plate, and the connection vertical plate is used for fixed connection with the right telescopic beam.

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