Temporary supporting device for coal mine tunneling

Abstract

The utility model discloses a temporary supporting device for coal mine excavation, and particularly relates to the technical field of coal mine excavation supporting, which comprises two arch-shaped supporting frames, supporting rods are arranged on two sides of the bottom of each arch-shaped supporting frame, and a splitting mechanism for conveniently taking down the arch-shaped supporting frames from the supporting rods is arranged at the bottoms of the arch-shaped supporting frames. The splitting mechanism comprises two limiting rods arranged at the bottom of the arch-shaped supporting frame, first threaded holes are formed in the limiting rods, second threaded holes are formed in the top ends of the supporting rods, and the interiors of the first threaded holes and the second threaded holes which are communicated are in threaded connection with the same first bolt. The arch-shaped supporting frames and the supporting rods can be split into two small parts through the splitting mechanism, the overall size is small, occupied space is small, passing in a coal mine is easy, the distance between the two arch-shaped supporting frames can be adjusted through the supporting mechanism, the supporting device is suitable for coal mines with different widths, and the supporting device is convenient to use. And the application range of the device is expanded.

Description

Technical Field

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

[0002] Coal mines are areas where humans exploit coal resources in coal-rich mining areas. However, in the production operations of coal mine tunnel excavation, in order to prevent sand and soil from falling from the top of the coal mine tunnel, support devices are needed to temporarily support the top of the tunnel during tunnel excavation work, and then artificial reinforcement is performed to improve work efficiency and safety.

[0003] For example, a temporary support device for coal mine excavation provided in the Chinese patent application with application number 202122050794.0 includes a bearing frame, on which at least two guide members perpendicular to the ground are fixed, and support plates are fixed on the two guide members, and a lifting member acting on the support plate is installed on the bearing frame to form a sliding state or a stopped state of the support plate along the axial direction of the guide member. This technical solution is provided with a bearing frame, a guide member, a support plate, a lifting member, two extension plates and a driving mechanism. When supporting the top wall of the tunnel, the two extension plates can be slid out to both sides along the support plate by the driving mechanism, thereby increasing the support area of ​​the support plate on the top wall of the tunnel, and providing better support for the top wall of the tunnel, thereby reducing the possibility of safety hazards occurring to coal miners during tunnel excavation, greatly improving the practicality of the temporary support device for coal mine excavation, and facilitating the promotion and usability of the equipment.

[0004] However, the following problems still exist in this technical solution: in this technical solution, the support plate and the guide rod are fixedly connected, but the terrain in the coal mine is complex. In some narrow sections, the support plate and the guide rod cannot be disassembled, resulting in the device being large in size and difficult to pass, causing great trouble to the staff. Utility Model Content

[0005] The purpose of the utility model is to provide a temporary support device for coal mine excavation. The arch support frame and the support rod can be split into two small parts through a splitting mechanism. The overall volume is small, the occupied space is small, and it is easy to pass through the inside of the coal mine. The distance between the two arch support frames can also be adjusted through the supporting mechanism to make it suitable for coal mines of different widths, thereby expanding the scope of use of the utility model to solve the above-mentioned deficiencies in the technology.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a temporary support device for coal mine excavation, comprising two arch support frames, each of which is provided with support rods on both sides of the bottom of the arch support frames, a bottom plate is fixedly provided at the bottom of each support rod, ground cones are inserted on both sides of the bottom plate, and the same limit plate is inserted inside the two arch support frames.

[0007] Preferably, a splitting mechanism is provided at the bottom of the arched support frame for convenient removal of the arched support frame from the support rod, and the splitting mechanism includes two limit rods arranged at the bottom of the arched support frame, the limit rods have a plug-in groove inside, the limit rods have a first threaded hole, and the top of the support rod has a second threaded hole, and the first threaded hole and the second threaded hole are connected to each other and are threadedly connected with the same first bolt for convenient removal of the arched support frame from the support rod.

[0008] Preferably, each of the support rods is provided with a lifting mechanism on the outside for adjusting the height of the arch support frame, the lifting mechanism includes a support column arranged on the outside of the support rod, the support column is provided with a mounting groove, the support rod is inserted into the mounting groove, a plurality of third threaded holes are provided on the support rod, a fourth threaded hole is provided on the top of the support column, the fourth threaded hole and the third threaded hole are connected internally with the same second bolt, and the support rod can slide inside the mounting groove to adjust the height of the arch support frame.

[0009] Preferably, a support mechanism for supporting the two support rods is provided between the two support rods located on the same side, and the support mechanism includes a support plate arranged outside the support rod, a slide groove is provided inside the support plate, and the same connecting plate is provided inside the two connected slide grooves, a plurality of fifth threaded holes are provided on the connecting plate, a fifth threaded hole is provided on the support plate, and the connected fifth threaded holes and the internal thread connection of the connecting plate are connected with the same third bolt for supporting the two support rods.

[0010] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0011] 1. Turn the first bolt and turn it out from the first threaded hole and the second threaded hole, and then pull the support rod out from the plug-in slot on the limit rod, so that the arch support frame and the support rod can be split into two small parts, the overall volume is small, the space occupied is small, and it is easy to pass inside the coal mine;

[0012] 2. Turn the third bolt and pull it out from the sixth threaded hole and the fifth threaded hole, and then pull the two support plates respectively. The two support plates can move on the slide groove. The movement of the support plates drives the support rod to move. The support rod can drive the arch support frame to move, and the distance between the two arch support frames can be adjusted to make it suitable for coal mines of different widths, thereby expanding the scope of use of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0014] Figure 1 It is a front view of the utility model;

[0015] Figure 2 It is a bottom view of the utility model;

[0016] Figure 3 It is a schematic diagram of the structure of the two arched support frames of the utility model after they are moved;

[0017] Figure 4 It is a structural schematic diagram of the splitting mechanism of the utility model;

[0018] Figure 5 It is a structural schematic diagram of the lifting mechanism of the utility model;

[0019] Figure 6 It is a structural schematic diagram of the support mechanism of the utility model.

[0020] Description of reference numerals:

[0021] 1 arch support frame, 2 support rods;

[0022] 3 splitting mechanism, 301 limiting rod, 302 plug-in slot, 303 first threaded hole, 304 second threaded hole, 305 first bolt;

[0023] 4 lifting mechanism, 401 support column, 402 mounting groove, 403 third threaded hole, 404 fourth threaded hole, 405 second bolt;

[0024] 5 supporting mechanism, 501 supporting plate, 502 sliding groove, 503 connecting plate, 504 fifth threaded hole, 505 sixth threaded hole, 506 third bolt;

[0025] 6 base plates, 7 ground cones, 8 limit plates. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0027] The utility model provides Figure 1-6A temporary support device for coal mine excavation shown in the figure comprises two arch support frames 1, each of the arch support frames 1 is provided with support rods 2 on both sides of the bottom, each of the support rods 2 is fixedly provided with a bottom plate 6 at the bottom, both sides of the bottom plate 6 are plugged with ground cones 7, and the two arch support frames 1 are internally plugged with the same limit plate 8;

[0028] like Figure 4 As shown, the bottom of the arched support frame 1 is provided with a splitting mechanism 3 for facilitating the removal of the arched support frame 1 from the support rod 2, and the splitting mechanism 3 includes two limit rods 301 arranged at the bottom of the arched support frame 1, and the limit rods 301 are provided with a plug-in slot 302, and the limit rods 301 are provided with a first threaded hole 303, and the top of the support rod 2 is provided with a second threaded hole 304, and the first threaded hole 303 and the second threaded hole 304 are connected to each other and are internally threadedly connected with the same first bolt 305;

[0029] By rotating the first bolt 305 and taking it out from the first threaded hole 303 and the second threaded hole 304, and then pulling the support rod 2 out from the insertion groove 302 on the limiting rod 301, the arch support frame 1 and the support rod 2 can be split into two small parts. The overall volume is small, the space occupied is small, and it is easy to pass inside the coal mine.

[0030] like Figure 5 As shown, each of the support rods 2 is provided with a lifting mechanism 4 for adjusting the height of the arch support frame 1 on the outside, and the lifting mechanism 4 includes a support column 401 provided on the outside of the support rod 2, a mounting groove 402 is provided inside the support column 401, and the support rod 2 is inserted into the mounting groove 402, and a plurality of third threaded holes 403 are provided on the support rod 2, and a fourth threaded hole 404 is provided on the top of the support column 401, and the fourth threaded hole 404 and the third threaded hole 403 that are connected are internally threadedly connected with the same second bolt 405, and the support rod 2 can slide inside the mounting groove 402;

[0031] When the utility model is moved to the inside of the coal mine, the support rod 2 is inserted into the limit rod 301 inside the arch support frame 1, and the support rod 2 is fixed inside the arch support frame 1 by the first bolt 305. The utility model can be fixed inside the coal mine by the ground cone 7 on the bottom plate 6. According to the height inside the coal mine, the second bolt 405 is rotated to turn the second bolt 405 out from the third threaded hole 403 and the fourth threaded hole 404, and then the support rod 2 is moved to be moved out from the support column 401. When it is moved to a suitable position, the second bolt 405 is rotated to the third threaded hole 403 and the fourth threaded hole 404, and the support rod 2 is fixed by the second bolt 405. The utility model can adjust the height of the arch support frame 1 through the lifting mechanism 4, so that it is suitable for coal mines of different heights, thereby expanding the practicality of the utility model.

[0032] like Figure 6 As shown, a support mechanism 5 for supporting the two support rods 2 is provided between the two support rods 2 located on the same side, and the support mechanism 5 includes a support plate 501 provided outside the support rod 2, a slide groove 502 is provided inside the support plate 501, and the same connecting plate 503 is provided inside the two connected slide grooves 502, and a plurality of fifth threaded holes 504 are provided on the connecting plate 503, and a fifth threaded hole 504 is provided on the support plate 501, and the connected fifth threaded hole 504 and the connecting plate 503 are internally threadedly connected with the same third bolt 506;

[0033] By rotating the third bolt 506, the third bolt 506 is pulled out from the sixth threaded hole 505 and the fifth threaded hole 504, and then the two support plates 501 are pulled respectively, and the two support plates 501 can move on the slide groove 502. The movement of the support plate 501 drives the support rod 2 to move, and the support rod 2 can drive the arch support frame 1 to move, and the distance between the two arch support frames 1 is adjusted to make it suitable for coal mines of different widths, thereby expanding the scope of use of the utility model. After moving to a suitable position, the third bolt 506 is rotated to the sixth threaded hole 505 and the fifth threaded hole 504, and the third bolt 506 is used to fix the support plate 501 and the slide groove 502. The two support plates 501 can increase the stability between the two support rods 2, thereby achieving the stability of the utility model.

[0034] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A temporary support device for coal mine excavation, comprising two arch support frames (1), characterized in that: Support rods (2) are provided on both sides of the bottom of each arched support frame (1), and a disassembly mechanism (3) is provided at the bottom of the arched support frame (1) for facilitating the removal of the arched support frame (1) from the support rods (2); The splitting mechanism (3) comprises two limiting rods (301) provided at the bottom of the arch support frame (1), a plug-in slot (302) being provided inside the limiting rods (301), a first threaded hole (303) being provided on the limiting rods (301), a second threaded hole (304) being provided at the top of the support rod (2), and a first bolt (305) being threadedly connected to the first threaded hole (303) and the second threaded hole (304) being connected to each other; Each support rod (2) is provided with a lifting mechanism (4) on the outside for adjusting the height of the arched support frame (1); A support mechanism (5) for supporting the two support rods (2) is provided between the two support rods (2) on the same side; The support mechanism (5) includes a support plate (501) arranged outside the support rod (2), a slide groove (502) is provided inside the support plate (501), and the two connected slide grooves (502) are provided with a same connecting plate (503), and a plurality of fifth threaded holes (504) are provided on the connecting plate (503). A fifth threaded hole (504) is provided on the support plate (501), and the connected fifth threaded holes (504) and the connecting plate (503) are internally threadedly connected with a same third bolt (506).

2. A temporary support device for coal mine excavation according to claim 1, characterized in that: The lifting mechanism (4) includes a support column (401) arranged outside the support rod (2), a mounting groove (402) is provided inside the support column (401), the support rod (2) is inserted into the mounting groove (402), a plurality of third threaded holes (403) are provided on the support rod (2), a fourth threaded hole (404) is provided on the top of the support column (401), and the fourth threaded hole (404) and the third threaded hole (403) are connected to each other and are internally threadedly connected with the same second bolt (405).

3. A temporary support device for coal mine excavation according to claim 2, characterized in that: The support rod (2) is capable of sliding inside the mounting groove (402).

4. A temporary support device for coal mine excavation according to claim 1, characterized in that: A bottom plate (6) is fixedly provided at the bottom of each support rod (2).

5. A temporary support device for coal mine excavation according to claim 4, characterized in that: Ground cones (7) are inserted on both sides of the bottom plate (6).

6. A temporary support device for coal mine excavation according to claim 1, characterized in that: The same limiting plate (8) is inserted into the two arched support frames (1).

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