Supporting and connecting device for coal mine tunnel

Abstract

The utility model relates to the technical field of coal mine tunnel support connecting devices, in particular to a coal mine tunnel support connecting device which comprises a hydraulic cylinder, the bottom of the hydraulic cylinder is fixedly connected with a bottom plate, the front side and the rear side of the bottom plate are arranged in a protruding mode, trundles with brakes are arranged at the bottom of the bottom plate, and fixing assemblies are arranged at the protruding positions of the bottom plate. The fixing assembly comprises a long screw rod, a fixing plate, a rubber layer and an anti-skid pad, the long screw rod is in threaded connection with the protruding position of the bottom plate, and the rubber layer is fixedly connected to the bottom of the fixing plate. The whole protection effect of the coal mine tunnel is improved, the steel wire mesh is in a replaced state through the arranged replacement assembly, the steel wire mesh with different lengths is replaced, so that the connecting device is suitable for coal mine tunnels with different widths, and the universality of the connecting device is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to coal mine roadway support connecting device technical field, concretely is a kind of coal mine roadway support connecting device. BACKGROUND

[0002] China's coal mine is mainly underground mining, needs to excavate a large number of roadway in underground, adopt roadway support to keep roadway unobstructed and surrounding rock stable, it is important to coal mine construction and production, common support mode usually selects anchor rod support, anchor rod and steel belt net cooperate to use, make anchor rod penetrate the hollow place of steel belt net until anchor into surrounding rock, make the surrounding of roadway form a whole and stable rock zone, to reach the purpose of roadway support that support and surrounding rock work together.

[0003] Since steel belt net and anchor rod are all arranged at the top of coal mine roadway, but there is no additional supporting force provided between the top and bottom of inner wall of coal mine roadway, which leads to certain safety hidden trouble of overall protection effect, therefore, aiming at the above problems, a coal mine roadway support connecting device is provided. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of coal mine roadway support connecting device to solve the problem that coal mine roadway support device does not provide additional supporting force between the top and bottom of inner wall of coal mine roadway.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A kind of coal mine roadway support connecting device, including hydraulic cylinder, the bottom of the hydraulic cylinder is fixedly connected with the bottom plate of the protruding setting of front and back two sides, the bottom of the bottom plate is equipped with brake trolley, the protruding place of the bottom plate is equipped with fixed assembly, the fixed assembly includes long screw rod, fixed plate, rubber layer and non-slip pad, the protruding place of the bottom plate is threadedly connected with long screw rod, the bottom of the long screw rod is fixedly connected with fixed plate, the bottom of the fixed plate is fixedly connected with rubber layer, the bottom of the rubber layer is fixedly connected with a plurality of non-slip pads, the top of the hydraulic cylinder is fixedly connected with connecting plate, one side of the connecting plate is tightly combined with steel wire mesh consisting of filter screen and frame, one side of the connecting plate is equipped with replacement assembly.

[0007] Preferably, the two hydraulic cylinders are arranged below the steel wire mesh, and the two fixed assemblies are arranged below each hydraulic cylinder.

[0008] Preferably, the replacement assembly includes positioning column, pull block, moving rod, moving plate, limiting slot and magnetic block, the two sides of the steel wire mesh frame are fixedly connected with positioning column, the bottom of the positioning column is provided with a hole, the moving rod is tightly combined in the hole of the positioning column, and the magnetic block is fixedly connected in the moving rod and the positioning column.

[0009] Preferably, a movable plate is fixedly connected to the outside of the movable rod, and a limiting groove is formed in the connecting plate. The movable plate and the limiting groove are slidably connected.

[0010] Preferably, one end of the movable rod has a gradually decreasing diameter, and a pull block is fixedly connected to the bottom of the movable rod, with the pull block and the connecting plate in close contact.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] In this invention, the hydraulic cylinder, base plate, braked casters, connecting plate, and wire mesh provide support between the coal mine roadway and the ground. The telescopic hydraulic cylinder is suitable for coal mine roadways of different heights. The braked casters facilitate the movement and subsequent fixation of the hydraulic cylinder. The wire mesh further reinforces the top of the inner wall of the coal mine roadway, increasing the overall protective effect. The fixed components, long screws, fixed plates, rubber layers, and anti-slip pads ensure the braked casters are more stable after being fixed. The replaceable components, positioning posts, pull blocks, moving rods, moving plates, limit grooves, and magnetic blocks allow the wire mesh to be replaced. By replacing the wire mesh with different lengths, it is suitable for coal mine roadways of different widths, increasing the versatility of this connecting device. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the bottom structure of the base plate of this utility model;

[0015] Figure 3 This utility model Figure 2 A schematic diagram of the structure at point A;

[0016] Figure 4 This is a cross-sectional view of the connecting plate of this utility model;

[0017] Figure 5 This is a schematic diagram of the positioning column structure of this utility model.

[0018] In the diagram: 1. Hydraulic cylinder; 2. Base plate; 3. Casters with brakes; 4. Connecting plate; 5. Wire mesh; 6. Fixing component; 61. Long screw; 62. Fixing plate; 63. Rubber layer; 64. Anti-slip mat; 7. Replacement component; 71. Positioning post; 72. Pull block; 73. Moving rod; 74. Moving plate; 75. Limiting groove; 76. Magnetic block. Detailed Implementation

[0019] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0020] It should be noted that the terms used herein are merely for the purpose of describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form, unless the context clearly indicates otherwise, and it should also be understood that, when the terms "comprise" and / or "include" are used in the specification, there is a presence of a feature, step, operation, device, component and / or combination thereof.

[0021] Please refer to Figures 1-5 The present application provides a technical scheme:

[0022] A coal mine tunnel supporting connecting device, comprising a hydraulic cylinder 1, the bottom of the hydraulic cylinder 1 is fixedly connected with a bottom plate 2 provided with protrusions on the front and rear sides, the bottom of the bottom plate 2 is provided with a brake trolley 3, the protrusion of the bottom plate 2 is provided with a fixing assembly 6, the fixing assembly 6 comprises a long screw 61, a fixed plate 62, a rubber layer 63 and a non-slip pad 64, the protrusion of the bottom plate 2 is threadedly connected with the long screw 61, the bottom of the long screw 61 is fixedly connected with the fixed plate 62, the bottom of the fixed plate 62 is fixedly connected with the rubber layer 63, the bottom of the rubber layer 63 is fixedly connected with a plurality of non-slip pads 64, the top of the hydraulic cylinder 1 is fixedly connected with a connecting plate 4, one side of the connecting plate 4 is tightly fitted with a steel mesh 5 composed of a filter screen and a frame, and one side of the connecting plate 4 is provided with a replacement assembly 7, which can increase the supporting force between the inner wall of the top and the bottom of the coal mine tunnel.

[0023] The two hydraulic cylinders 1 are arranged below the steel mesh 5 in a group, and the two fixing assemblies 6 are arranged below each hydraulic cylinder 1 in a group, facilitating the use of the hydraulic cylinder 1; the replacement assembly 7 comprises a positioning column 71, a pull block 72, a moving rod 73, a moving plate 74, a limiting groove 75 and a magnetic block 76, the two sides of the frame of the steel mesh 5 are fixedly connected with the positioning columns 71, the bottom of the positioning column 71 is provided with a hole, the moving rod 73 is tightly fitted in the hole of the positioning column 71, and the magnetic block 76 is fixedly connected in the positioning column 71 and the moving rod 73, facilitating the magnetic attraction fixation after the positioning column 71 is inserted; the outer side of the moving rod 73 is fixedly connected with the moving plate 74, the limiting groove 75 is formed in the connecting plate 4, the moving plate 74 and the limiting groove 75 are slidingly connected, facilitating the limiting of the movement of the positioning column 71; one end of the moving rod 73 is provided with a gradually decreasing diameter, the bottom of the moving rod 73 is fixedly connected with the pull block 72, and the pull block 72 is tightly fitted with the connecting plate 4, facilitating the insertion of the moving rod 73.

[0024] Work flow: when the coal mine roadway supporting connecting device is in use, first, the coal mine roadway is effectively supported by the way of anchor rod support, the steel belt net and the plurality of anchor rods are installed on the top of the coal mine roadway in cooperation, then the hydraulic cylinder 1 is moved to the appropriate position through the brake trolley 3, the two hydraulic cylinders 1 are respectively moved to the two sides in the coal mine roadway, after being moved to the appropriate position, the brake trolley 3 is controlled to be in the fixed state, then the one end of the long screw rod 61 is controlled to rotate, so that the fixed plate 62, the rubber layer 63 and the non-slip pad 64 rotate and descend, until the coal mine roadway ground is closely combined, the non-slip pad 64 and the rubber layer 63 are in the extruded state under stress, further increase the fixing effect of the hydraulic cylinder 1, then the hydraulic pump is controlled to control the extension and contraction of the hydraulic cylinder 1, so that the connecting plate 4 and the steel belt net on the top of the coal mine roadway inner wall are closely combined, at the same time, the steel wire mesh 5 is also closely combined with the steel belt net, the connecting device composed of the hydraulic cylinder 1, the bottom plate 2, the brake trolley 3, the connecting plate 4, the steel wire mesh 5 and the fixing assembly 6 can be several groups, which are installed in the coal mine roadway in the same way, increase the support force between the top inner wall and the bottom of the coal mine roadway, the connecting device can be repeatedly used, through the setting of the replacement assembly 7, the steel wire mesh 5 is in the replaceable state, at the same time, the connecting device can be suitable for coal mine roadways with different widths, when the steel wire mesh 5 with other length needs to be replaced, the hydraulic cylinder 1 is moved to the empty land, the pull block 72 is held and descended, the moving rod 73 is driven and descended at the same time, the moving plate 74 slides in the limiting slot 75 in the connecting plate 4, after the magnetic block 76 in the moving rod 73 is far away from the magnetic block 76 in the positioning column 71, the magnetic attraction force gradually becomes smaller until disappears, at this time, the hydraulic cylinder 1 is moved, the connecting plate 4 on the top of the hydraulic cylinder 1 is moved at the same time, the positioning column 71 is gradually far away from the connecting plate 4, the other end of the steel wire mesh 5 is disassembled in the same way, the disassembly of the steel wire mesh 5 is completed, and the installation of the steel wire mesh 5 can be realized through reverse operation.

[0025] The contents not described in detail in the specification belong to the prior art known by the person skilled in the art. The standard parts used in the utility model can be purchased from the market, the special-shaped parts can be ordered according to the description and the drawings, and the specific connection mode of each part adopts the conventional means such as bolt, rivet and welding in the prior art. The machinery, parts and equipment adopt the conventional type in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, which will not be described in detail here.

[0026] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A coal mine roadway support connecting device comprising a hydraulic cylinder (1), characterized in that: The hydraulic cylinder (1) bottom fixedly connected with the front and rear two sides are convexly arranged bottom plate (2), the bottom plate (2) bottom is equipped with brake casters (3), the convex portion of the bottom plate (2) is equipped with fixed assembly (6), the fixed assembly (6) includes long screw rod (61), fixed plate (62), rubber layer (63) and non-slip mat (64), the convex portion of the bottom plate (2) is threadedly connected with long screw rod (61), the long screw rod (61) bottom fixedly connected with fixed plate (62), the fixed plate (62) bottom fixedly connected with rubber layer (63), the rubber layer (63) bottom fixedly connected with a plurality of non-slip mat (64), the hydraulic cylinder (1) top fixedly connected with connecting plate (4), the connecting plate (4) one side closely combined with steel wire mesh (5) composed of filter screen and frame, the connecting plate (4) one side is equipped with replacement assembly (7).

2. A coal mine roadway support connecting device according to claim 1, characterised in that: The hydraulic cylinder (1) two as a group is arranged below the steel wire mesh (5), the fixed assembly (6) two as a group is arranged below each hydraulic cylinder (1).

3. A coal mine roadway support connecting device according to claim 1, characterised in that: The replacement assembly (7) includes positioning column (71), pull block (72), moving rod (73), moving plate (74), limit groove (75) and magnetic block (76), the both sides of the steel wire mesh (5) frame are fixedly connected with positioning column (71), the positioning column (71) bottom is arranged as a hole, the hole in the positioning column (71) closely combined with moving rod (73), the moving rod (73) and positioning column (71) are all fixedly connected with magnetic block (76).

4. A coal mine roadway support connecting device according to claim 3, characterised in that: The moving rod (73) outside is fixedly connected with moving plate (74), the connecting plate (4) is provided with limit groove (75), the moving plate (74) and limit groove (75) are slidably connected.

5. A coal mine roadway support coupling device according to claim 3, characterised in that: The moving rod (73) one end is arranged as a diameter gradually small, the moving rod (73) bottom fixedly connected with pull block (72), the pull block (72) and connecting plate (4) closely combined.

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