Supporting device for shaft bottom roadway of coal mine air shaft

Abstract

The utility model discloses a coal mine air shaft underground roadway supporting device which comprises a first reinforcing mesh and a second reinforcing mesh which are arranged adjacently, and further comprises a hook piece, a reinforcing piece and an anchoring piece, the hook piece is arranged on the side, facing the second reinforcing mesh, of the first reinforcing mesh, and the reinforcing piece is arranged on the side, facing the second reinforcing mesh, of the second reinforcing mesh. The reinforcer is arranged on the side, facing the first reinforcing mesh, of the second reinforcing mesh, and the anchoring part and the reinforcer are arranged in a penetrating mode. By means of the design of the hook piece, the reinforcing piece and the anchoring piece, when the first reinforcing mesh and the second reinforcing mesh are laid, the hook plate is inserted into the clamping groove, the clamping groove faces the inner wall of a roadway, and then the anchor rod is inserted into the penetrating hole, so that the anchor rod is inserted into the roadway, and therefore the blocking disc limits movement of the connecting plate; and the clamping plates are limited by the connecting plates, and the hook plates are limited by the clamping plates, so that the strength of the connecting part of the first reinforcing mesh and the second reinforcing mesh is enhanced.

Description

Technical Field

[0001] This utility model relates to the technical field of mine support devices, and in particular to a support device for the bottom roadway of a coal mine ventilation shaft. Background Technology

[0002] Coal mine ventilation shafts are used for ventilation inside the mine. To ensure structural stability, the bottom roadways are usually supported by support devices, with rock bolt support being a common method.

[0003] Anchor bolt support involves first laying steel mesh in the tunnel, then fixing the steel mesh to the inner wall of the tunnel with anchor bolts, and finally forming a combined support by spraying concrete. However, when laying the steel mesh, the steel mesh needs to be overlapped. After overlapping, plastic cable ties are used to connect adjacent steel mesh. As a result, when the tunnel collapses, the strength of the plastic cable ties is insufficient, which can easily cause the overlap of the steel mesh to break, making it impossible to support the tunnel. Utility Model Content

[0004] The purpose of this utility model is to provide a support device for the bottom roadway of a coal mine ventilation shaft to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a support device for the bottom roadway of a coal mine ventilation shaft, comprising a first steel mesh and a second steel mesh, wherein the first steel mesh and the second steel mesh are arranged adjacent to each other, and further comprising:

[0006] A hook component, wherein the hook component is disposed on the side of the first reinforcing mesh facing the second reinforcing mesh;

[0007] A reinforcing member is provided on the side of the second steel mesh facing the first steel mesh, and the reinforcing member is used to connect with the hook member;

[0008] An anchor, which is interspersed with a reinforcing member, is used to fix the reinforcing member to the inner wall of the tunnel.

[0009] Preferably, the hook component includes:

[0010] A hook plate, wherein the hook plate is disposed at one end of the first reinforcing mesh facing the second reinforcing mesh;

[0011] A first fixing plate is disposed between a first steel mesh and a hook plate, and both ends of the first fixing plate are fixedly connected to one end of the first steel mesh and one end of the hook plate, respectively.

[0012] Preferably, the vertical cross-section of the hook plate is J-shaped.

[0013] Preferably, the reinforcing member includes:

[0014] A snap-fit ​​plate is provided at one end of the second reinforcing mesh facing the first reinforcing mesh;

[0015] The second fixing plate is disposed between the snap-fit ​​plate and the second steel mesh, and the two ends of the second fixing plate are fixedly connected to one end of the second steel mesh and one end of the snap-fit ​​plate, respectively.

[0016] A snap-fit ​​groove is provided on the side of the snap-fit ​​plate facing the inner wall of the tunnel.

[0017] Preferably, the vertical cross-section of the snap-fit ​​groove is J-shaped.

[0018] Preferably, a connecting plate is fixedly connected to the outer wall of the snap-fit ​​plate, and the outer wall of the connecting plate has through holes for inserting anchors.

[0019] Preferably, the anchor includes:

[0020] Anchor bolt, wherein the anchor bolt is inserted into the through hole;

[0021] A baffle plate is sleeved on the outer wall of one end of the anchor rod, and the baffle plate is located on the side of the connecting plate away from the snap-fit ​​groove.

[0022] The technical effects and advantages of this utility model are as follows:

[0023] This utility model utilizes the design of hooks, reinforcing members, and anchors. When laying the first and second steel mesh, the hook plate of the first steel mesh is first inserted into the snap-fit ​​groove of the second steel mesh, with the snap-fit ​​groove facing the inner wall of the tunnel. Then, the anchor rod is inserted into the perforation, allowing the anchor rod to penetrate into the tunnel. This causes the baffle plate to restrict the movement of the connecting plate, the connecting plate to restrict the snap-fit ​​plate, and the snap-fit ​​plate to restrict the hook plate, thereby enhancing the strength of the connection between the first and second steel mesh. Attached Figure Description

[0024] Figure 1 This is one of the three-dimensional structural diagrams of the first and second steel mesh panels of this utility model.

[0025] Figure 2 The second schematic diagram shows the three-dimensional structure of the first and second steel mesh panels of this utility model.

[0026] Figure 3 This is a three-dimensional structural diagram of the first steel mesh and hook component of this utility model.

[0027] Figure 4 This is a three-dimensional structural diagram of the second steel mesh and reinforcing member of this utility model.

[0028] In the diagram: 1. First steel mesh; 2. Second steel mesh; 3. Hook; 31. Hook plate; 32. First fixing plate; 4. Reinforcing member; 41. Clip plate; 42. Second fixing plate; 43. Clip groove; 44. Connecting plate; 45. Perforation; 5. Anchor; 51. Anchor rod; 52. Stop plate. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] This utility model provides, for example Figure 1-4 The coal mine ventilation shaft bottom roadway support device shown includes a first steel mesh 1 and a second steel mesh 2, which are arranged adjacent to each other, and also includes:

[0031] Hook 3 is provided on the side of the first steel mesh 1 facing the second steel mesh 2;

[0032] Reinforcing member 4 is provided on the side of the second steel mesh 2 facing the first steel mesh 1, and is used to connect with the hook member 3;

[0033] Anchor 5 is interspersed with reinforcing member 4. Anchor 5 is used to fix reinforcing member 4 to the inner wall of the tunnel.

[0034] Furthermore, the first steel mesh 1 and the second steel mesh 2 are existing steel meshes for mine roadway support. The first steel mesh 1 and the second steel mesh 2 are arranged adjacent to each other. Multiple sets of hooks 3 and reinforcing members 4 are respectively arranged. The opposite ends of the adjacent first steel mesh 1 and the second steel mesh 2 are connected by the hooks 3 and the reinforcing members 4. The first steel mesh 1 and the second steel mesh 2 can be vertically adjacent or horizontally adjacent.

[0035] Hook component 3 includes:

[0036] Hook plate 31, hook plate 31 is set at the end of the first steel mesh 1 facing the second steel mesh 2;

[0037] The first fixing plate 32 is disposed between the first steel mesh 1 and the hook plate 31, and the two ends of the first fixing plate 32 are fixedly connected to one end of the first steel mesh 1 and one end of the hook plate 31, respectively.

[0038] The vertical cross-section of the hook plate 31 is J-shaped.

[0039] Furthermore, the hook component 3 is made entirely of metal. The end of the first steel mesh 1 near the second steel mesh 2 is welded and fixed to the contact part of the first fixing plate 32. The first fixing plate 32 is welded and fixed to the contact part of the hook plate 31. The size of the hook plate 31 is adapted to the size of the snap-fit ​​groove 43.

[0040] Reinforcing component 4 includes:

[0041] Clip-on plate 41, clip-on plate 41 is set at the end of the second steel mesh 2 facing the first steel mesh 1;

[0042] The second fixing plate 42 is disposed between the snap-fit ​​plate 41 and the second steel mesh 2. The two ends of the second fixing plate 42 are fixedly connected to one end of the second steel mesh 2 and one end of the snap-fit ​​plate 41, respectively.

[0043] The snap-fit ​​groove 43 is provided on the side of the snap-fit ​​plate 41 facing the inner wall of the tunnel.

[0044] The vertical cross-section of the snap-fit ​​groove 43 is J-shaped.

[0045] A connecting plate 44 is fixedly connected to the outer wall of the snap-fit ​​plate 41, and the outer wall of the connecting plate 44 has a through hole 45 for inserting the anchor 5.

[0046] Anchor 5 includes:

[0047] Anchor bolt 51 is inserted into the through hole 45;

[0048] The baffle 52 is sleeved on the outer wall of one end of the anchor rod 51, and the baffle 52 is located on the side of the connecting plate 44 away from the snap-fit ​​groove 43.

[0049] Furthermore, the reinforcing member 4 is made entirely of metal. The end of the second steel mesh 2 near the first steel mesh 1 is welded and fixed to the part that contacts the second fixing plate 42. The part of the second fixing plate 42 that contacts the snap-fit ​​plate 41 is welded and fixed. The connecting plate 44 is used to connect multiple snap-fit ​​plates 41. The part of the connecting plate 44 that contacts the snap-fit ​​plate 41 is welded and fixed. Perforations 45 are opened at intervals on the outer wall of the connecting plate 44. Multiple perforations 45 are set at equal intervals to arrange the anchors 5 at equal intervals. The anchors 5 are made of metal. The anchor rod 51 is the same as the existing roadway support anchor rod. The baffle 52 is welded to the outer wall of one end of the anchor rod 51. The diameter of the baffle 52 is 1.5 times the diameter of the perforation 45.

[0050] When laying the first steel mesh 1 and the second steel mesh 2, the hook plate 31 of the first steel mesh 1 is inserted into the snap-fit ​​groove 43 of the second steel mesh 2. Then, the side of the second steel mesh 2 with the snap-fit ​​groove 43 faces the inner wall of the tunnel. At this time, the hook plate 31 is inside the snap-fit ​​groove 43, thereby driving the first steel mesh 1 to simultaneously adhere to the inner wall of the tunnel. Finally, the anchor rod 51 is anchored to the inner wall of the tunnel using existing technology until the side of the baffle 52 and the connecting plate 44 are tightly adhered to each other, thereby restricting the movement of the connecting plate 44. The connecting plate 44 restricts the snap-fit ​​plate 41, and the snap-fit ​​plate 41 restricts the hook plate 31, thereby enhancing the strength of the connection between the first steel mesh 1 and the second steel mesh 2, which is greater than the strength of the plastic cable tie.

[0051] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A coal mine air shaft bottom roadway supporting device, comprising a first steel mesh sheet (1) and a second steel mesh sheet (2), the first steel mesh sheet (1) and the second steel mesh sheet (2) are arranged adjacently, characterized in that, Also include: Hook piece (3), the hook piece (3) is arranged in the first steel mesh (1) towards the second steel mesh (2) one side; Reinforcing member (4), the reinforcing member (4) is arranged in the second steel mesh (2) towards the first steel mesh (1) one side, the reinforcing member (4) is used to and hook piece (3) is connected; Anchor (5), the anchor (5) is inserted with reinforcing member (4), the anchor (5) is used to be fixedly connected with the reinforcing member (4) and roadway inner wall.

2. The coal mine air shaft floor roadway supporting device according to claim 1, characterized in that, The hook piece (3) includes: Hook plate (31), the hook plate (31) is arranged in the first steel mesh (1) towards the second steel mesh (2) one end; First fixed plate (32), the first fixed plate (32) is arranged between the first steel mesh (1) and hook plate (31), and the two ends of the first fixed plate (32) are fixedly connected with one end of the first steel mesh (1) and one end of the hook plate (31) respectively.

3. The coal mine air shaft floor roadway supporting device according to claim 2, characterized in that, The vertical section of the hook plate (31) is J-shaped.

4. The coal mine air shaft floor roadway supporting device according to claim 1, characterized in that, The reinforcing member (4) includes: Clamping plate (41), the clamping plate (41) is arranged in the second steel mesh (2) towards the first steel mesh (1) one end; Second fixed plate (42), the second fixed plate (42) is arranged between the clamping plate (41) and the second steel mesh (2), and the two ends of the second fixed plate (42) are fixedly connected with one end of the second steel mesh (2) and one end of the clamping plate (41) respectively; Clamping groove (43), the clamping groove (43) is opened in the side of the clamping plate (41) towards the roadway inner wall.

5. The device according to claim 4, characterized in that, The vertical section of the clamping groove (43) is J-shaped.

6. The coal mine air shaft bottom roadway supporting device according to claim 4, characterized in that, The outer wall of the clamping plate (41) is fixedly connected with the connecting plate (44), and the outer wall of the connecting plate (44) is provided with the perforation (45) for inserting the anchor (5).

7. The device according to claim 6, characterized in that, The anchor (5) includes: Anchor rod (51), the anchor rod (51) is insertedly connected with the perforation (45); Baffle disc (52), the baffle disc (52) is sleeved on the outer wall of one end of the anchor rod (51), and the baffle disc (52) is arranged on the side of the connecting plate (44) away from the clamping groove (43).

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