Coal mine tunneling supporting device

Abstract

The utility model provides a coal mine tunneling supporting device which comprises a top plate, a corner attaching unit and three supporting units are arranged below the top plate, the corner attaching unit comprises a left side plate, a right side plate and a rotating shaft, and the left side plate and the right side plate are both arranged on the surface of the rotating shaft in a rotating mode. The left side plate and the right side plate are hinged through the rotating shaft, and the supporting units are arranged at one end of the left side plate, one end of the right side plate and the rotating shaft, so that the angle between the left side plate and the right side plate can be adjusted according to the turning angle of a roadway; according to the supporting device, the three supporting units are arranged, so that the three supporting units support the two ends and the middle of the roadway corner respectively and are reinforced through the top plate, the three supporting units can form a whole, the overall strength can be guaranteed during supporting, the supporting device can adapt to roadway corners of different angles, and the better supporting effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mine excavation, in particular to a coal mine excavation supporting device. Background Art

[0002] As an important energy material, coal mines are widely used in industrial production and other fields. Since coal mines are generally hidden underground, coal mining operations are also underground operations. When mining underground, materials are generally transported and personnel enter and exit the coal mine tunnels. The stability of the coal mine tunnels is related to the safety of mining. After the tunnels are excavated, they need to be reinforced by supporting structures to ensure the stability of the tunnels.

[0003] Announcement No. "CN117328910A" provides a temporary reinforcement support device for coal mine tunnels during coal mining and excavation, including a top plate, a left side plate, a right side plate and a bottom plate. The left side of the top plate is bent downward to form a fixed portion, the upper end of the left side plate is installed on the bottom surface of the fixed portion through a hinge, and the right side plate is installed on the right side of the top plate through a hinge. The device can form an integral plate structure, and multiple plates can be stacked, which greatly reduces the volume, facilitates transportation, and is also convenient for subsequent installation, increasing the efficiency of support;

[0004] However, the above solution still has the following defects:

[0005] Since the device forms a frame structure as a whole, it can provide support directly from the coal mine tunnel. However, for the corners of the tunnel, multiple devices are needed for support, and the multiple devices are not a whole, and the overall strength cannot be guaranteed during support. Utility Model Content

[0006] The purpose of the utility model is to provide a coal mine excavation support device to solve the problems raised in the above background technology.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A coal mine excavation support device, comprising a top plate, a corner fitting unit and three support units are arranged below the top plate, the corner fitting unit comprises a left plate, a right plate and a rotating shaft, the left plate and the right plate are both rotatably arranged on the surface of the rotating shaft, and the three support units are respectively hinged to one end of the left plate, one end of the right plate and the surface of the rotating shaft;

[0009] The support unit includes two beams and two legs. The two beams are arranged in parallel, and the two ends of the two beams are respectively fixed to the surfaces of the two legs. The two beams of the same height in two adjacent support units are connected by an auxiliary mechanism, and the top of the highest beam in each support unit is connected to the top plate by a connecting mechanism.

[0010] Preferably, two support frames are symmetrically arranged between two cross beams in the same support unit, and the support frames are arranged in an X-shaped structure.

[0011] Preferably, the auxiliary mechanism comprises a rotating seat and a telescopic rod, the rotating seat is fixedly arranged on the surface of the crossbeam, and two ends of the telescopic rod are respectively hinged to two rotating seats at the same height.

[0012] Preferably, the connecting mechanism includes a diagonal brace, a connecting seat, a receiving groove and a sliding member, the sliding member is arranged at the top of the beam, the bottom of the diagonal brace is slidably arranged on the top of the beam through the sliding member, the connecting seat is fixed to the bottom of the top plate, the receiving groove is arranged on the surface of the connecting seat, and the top of the diagonal brace extends into the receiving groove.

[0013] Preferably, the sliding member includes a T-shaped slot and a T-shaped track, the T-shaped track is fixedly arranged on the top of the beam, the T-shaped slot is arranged on the bottom of the diagonal brace, and the diagonal brace is slidably arranged on the surface of the T-shaped track through the T-shaped slot.

[0014] Preferably, the angle between the left plate and the right plate is 90°, and the edges of the left plate and the right plate are in contact with each other, and one ends of the three support units fall on the same arc.

[0015] Preferably, the top plate is formed by splicing a plurality of steel plates, and the side surfaces of the top plate are flush with the side surfaces of the left plate and the right plate.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The utility model hinges the left side plate and the right side plate by a rotating shaft, and a support unit is arranged on one end of the left side plate, one end of the right side plate and the rotating shaft, so that the angle between the left side plate and the right side plate can be adjusted according to the turning angle of the tunnel, so that the three support units respectively support from both ends and the middle part of the turning angle of the tunnel, and are reinforced by the top plate, so that the three support units can not only form a whole, but also can ensure the overall strength during support, and can also adapt to the turning angles of the tunnels at different angles, so as to achieve a better support effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the main structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the top structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the connection structure between the left side plate and the right side plate of the utility model;

[0021] Figure 4 It is a schematic diagram of the connection structure between the connecting seat and the diagonal brace of the utility model.

[0022] In the figure: 1. top plate; 2. left side plate; 3. right side plate; 4. rotating shaft; 5. crossbeam; 6. supporting legs; 7. supporting frame; 8. rotating seat; 9. telescopic rod; 10. diagonal brace; 11. connecting seat; 12. receiving groove; 13. T-slot; 14. T-track. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-4 , the utility model provides a technical solution:

[0025] Embodiment 1

[0026] A coal mine excavation support device comprises a roof 1, a corner fitting unit and three support units are arranged below the roof 1, the corner fitting unit comprises a left side plate 2, a right side plate 3 and a rotating shaft 4, the left side plate 2 and the right side plate 3 are both rotatably arranged on the surface of the rotating shaft 4, the three support units are respectively hinged to one end of the left side plate 2, one end of the right side plate 3 and the surface of the rotating shaft 4, the support unit comprises two beams 5 and two legs 6, the two beams 5 are arranged in parallel, and the two ends of the two beams 5 are respectively fixed to the surfaces of the two legs 6, two adjacent support units and two beams 5 at the same height are connected by an auxiliary mechanism, the top of the highest beam 5 in each support unit is connected to the roof 1, two support frames 7 are symmetrically arranged between the two beams 5 in the same support unit, the support frame 7 is arranged as an X-shaped structure, the auxiliary mechanism comprises a rotating seat 8 and a telescopic rod 9, the rotating seat 8 is fixedly arranged on the surface of the beam 5, and the two ends of the telescopic rod 9 are respectively hinged to the two rotating seats 8 at the same height.

[0027] See also Figure 1 and 2The support frame 7 between the two cross beams 5 can form the two cross beams 5 into a whole and increase the compressive resistance of the cross beam 5. The support unit is hinged to the left side plate 2, the right side plate 3 and the rotating shaft 4 in a rotating manner, and can freely adjust the angle between two adjacent support units. In conjunction with the hinge between the left side plate 2 and the right side plate 3, it can adapt to lanes with different angles. When the angle between two adjacent support units changes, the telescopic rod 9 can always connect the two cross beams 5.

[0028] The angle between the left side plate 2 and the right side plate 3 is 90°, and the edges of the left side plate 2 and the right side plate 3 are in contact with each other, and one end of the three support units falls on the same arc.

[0029] See also Figure 2 and 3 Since the angle between the left plate 2 and the right plate 3 is 90°, the angle between two adjacent support units is 45°. Assuming that the angle of the tunnel corner is 90°, the support units on the left plate 2 and the right plate 3 can be perpendicular to the two ends of the tunnel corner, and the support unit on the rotating shaft 4 is just located in the middle of the tunnel corner, which can evenly support the tunnel corner. Assuming that the angle of the tunnel corner is an obtuse angle greater than 90°, the support unit can also evenly support the tunnel corner by adjusting the angle between the left plate 2 and the right plate 3.

[0030] It should be noted that the top plate 1 is made of multiple steel plates, and the side of the top plate 1 is flush with the side of the left plate 2 and the right plate 3. The top plate 1 can be directly spliced ​​in the tunnel during installation, and the side of the top plate 1 and the left plate 2 and the right plate 3 can simultaneously contact the inner wall of the tunnel, thereby achieving comprehensive support for the tunnel corners.

[0031] Embodiment 2

[0032] In the above scheme, support for the corners of the tunnel is achieved by the corner fitting unit and the support unit. However, since the top plate 1 needs to be completely fitted on the top of the tunnel, it is not convenient to move the top plate 1, the corner fitting unit, the support unit and the support leg 6 out of the tunnel as a whole. In order to facilitate the overall disassembly and assembly, this embodiment provides a connecting mechanism between the beam 5 and the top plate 1, the connecting mechanism includes a diagonal brace 10, a connecting seat 11, a receiving groove 12 and a sliding member, the sliding member is arranged at the top of the beam 5, the bottom of the diagonal brace 10 is slidably arranged on the top of the beam 5 through the sliding member, the connecting seat 11 is fixed to the bottom of the top plate 1, the receiving groove 12 is arranged on the surface of the connecting seat 11, the top of the diagonal brace 10 extends into the receiving groove 12, the sliding member includes a T-slot 13 and a T-track 14, the T-track 14 is fixedly arranged on the top of the beam 5, the T-slot 13 is arranged at the bottom of the diagonal brace 10, and the diagonal brace 10 is slidably arranged on the surface of the T-track 14 through the T-slot 13.

[0033] See also Figure 2 and 4 By sliding the diagonal brace 10, the bottom end of the diagonal brace 10 can be moved on the surface of the T-track 14. At this time, the top end of the diagonal brace 10 can move synchronously inside the accommodating groove 12. In a stationary state, the top end of the diagonal brace 10 is located inside the accommodating groove 12. Due to the specific structure of the diagonal brace 10, the connecting seat 11 and the accommodating groove 12, the top plate 1 and the diagonal brace 10 can be limited in the vertical direction. By moving the diagonal brace 10 laterally, the connecting seat 11 can be separated from the diagonal brace 10, thereby facilitating the removal of the top plate 1 as a whole. When in use, the diagonal brace 10 can be supported between the crossbeam 5 and the top plate 1, thereby further increasing the overall strength to achieve a better supporting effect.

[0034] When in use, the left side plate 2 and the right side plate 3 are rotated to the same angle according to the specific angle of the corner of the tunnel, and then the left side plate 2 and the right side plate 3 are fixed to the wall of the tunnel by bolts. At this time, the support units are rotated on the left side plate 2, the right side plate 3 and the rotating shaft 4 respectively, so that one side of the support unit is in contact with the wall on the other side of the tunnel, and then the steel plate is transported into the tunnel and spliced ​​into the top plate 1, and then the top plate 1 is transported to the top of the support unit and made to contact with the top of the tunnel. At this time, the diagonal brace 10 is moved horizontally so that the bottom of the diagonal brace 10 slides on the surface of the T-track 14. At this time, the top of the diagonal brace 10 can enter the accommodating groove 12, thereby realizing the fixation between the top plate 1 and the crossbeam 5. At this point, the three support units have completed the support of the corner of the tunnel.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A coal mine excavation support device, comprising a roof plate (1), characterized in that: A corner fitting unit and three supporting units are arranged below the top plate (1), the corner fitting unit comprising a left side plate (2), a right side plate (3) and a rotating shaft (4), the left side plate (2) and the right side plate (3) are both rotatably arranged on the surface of the rotating shaft (4), and the three supporting units are respectively hinged to one end of the left side plate (2), one end of the right side plate (3) and the surface of the rotating shaft (4); The support unit comprises two cross beams (5) and two legs (6); the two cross beams (5) are arranged in parallel, and the two ends of the two cross beams (5) are respectively fixed to the surfaces of the two legs (6); two cross beams (5) at the same height of two adjacent support units are connected via an auxiliary mechanism; and the top of the highest cross beam (5) in each support unit is connected to the top plate (1) via a connecting mechanism.

2. A coal mine excavation support device according to claim 1, characterized in that: Two support frames (7) are symmetrically arranged between two cross beams (5) in the same support unit, and the support frames (7) are arranged in an X-shaped structure.

3. A coal mine excavation support device according to claim 1, characterized in that: The auxiliary mechanism comprises a rotating seat (8) and a telescopic rod (9); the rotating seat (8) is fixedly arranged on the surface of the crossbeam (5); and the two ends of the telescopic rod (9) are respectively hinged on two rotating seats (8) at the same height.

4. A coal mine excavation support device according to claim 1, characterized in that: The connecting mechanism comprises an oblique brace (10), a connecting seat (11), a receiving groove (12) and a sliding member, wherein the sliding member is arranged at the top of the cross beam (5), the bottom of the oblique brace (10) is slidably arranged at the top of the cross beam (5) through the sliding member, the connecting seat (11) is fixed to the bottom of the top plate (1), the receiving groove (12) is arranged on the surface of the connecting seat (11), and the top of the oblique brace (10) extends into the receiving groove (12).

5. A coal mine excavation support device according to claim 4, characterized in that: The sliding member comprises a T-shaped slot (13) and a T-shaped track (14); the T-shaped track (14) is fixedly arranged on the top of the crossbeam (5); the T-shaped slot (13) is arranged on the bottom of the diagonal brace (10); and the diagonal brace (10) is slidably arranged on the surface of the T-shaped track (14) through the T-shaped slot (13).

6. A coal mine excavation support device according to claim 1, characterized in that: The angle between the left side plate (2) and the right side plate (3) is 90°, and the edges of the left side plate (2) and the right side plate (3) are in contact with each other, and one end of the three support units falls on the same arc.

7. A coal mine excavation support device according to claim 1, characterized in that: The top plate (1) is formed by splicing a plurality of steel plates, and the side surface of the top plate (1) is flush with the side surfaces of the left side plate (2) and the right side plate (3).

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