A safety supporting device for coal mine tunneling operation

Abstract

The utility model relates to the technical field of coal mine tunneling, and proposes a safety supporting device for coal mine tunneling operation, which comprises two bases, the two bases are oppositely arranged, a lifting pipe is welded to the top end face of the base, a lifting column is inserted into the top of the lifting pipe, a damping pipe is screwed to the top end face of the lifting column, a first damping rod is screwed to the inner bottom of the damping pipe, and a top rod is inserted into the top of the damping pipe; the safety supporting device for coal mine tunneling operation forms first round protection through the steel cable, the second damping rod and the supporting pad, if the steel cable is broken or comes out of the sleeve due to excessive pressure, second round protection is formed by the first connecting rod and the second connecting rod, and buffering is performed by the first damping rod; multiple protections are conducive to improving the safety supporting effect of the equipment, and the range supported by the equipment is large, which can increase the escape time when the mine collapses and improve the use effect of the equipment.

Description

Technical Field

[0001] This utility model relates to the field of coal mine tunneling technology, specifically to a safety support device for coal mine tunneling operations. Background Technology

[0002] Coal mine tunneling is the construction process of excavating and supporting underground roadways, aiming to create safe passages for coal mining, transportation, and ventilation. To improve the safety of the passages, safety supports are usually used for auxiliary support.

[0003] A search revealed an existing technology (publication number: CN215108980U) for a safety support structure in coal mine tunneling. The technology describes a structure that "includes two support frames, each topped with an electric jack. The output end of each electric jack is connected to a support push rod. A folding and stabilizing mechanism is located between the two electric jacks. The folding and stabilizing mechanism includes two first hinge blocks located between the two electric jacks. One end of each first hinge block is connected to a first folding rod. A second folding rod is located on one side of each first folding rod. A second hinge block is installed at one end of each second folding rod. A concave frame is located at the top of both the first and second folding rods, and a plug-in protrusion is located at the bottom of both the first and second folding rods." However, the existing technology has limited support capabilities, and its support effect is limited in the event of a tunnel collapse. Therefore, designing a safety support device for coal mine tunneling operations is essential. Utility Model Content

[0004] The purpose of this utility model is to provide a safety support device for coal mine tunneling operations, which solves the problems in related technologies that the range of support is limited during use and the supporting effect is limited when the tunnel collapses.

[0005] The technical solution of this utility model is as follows:

[0006] A safety support device for coal mine tunneling operations includes two bases arranged opposite each other. A lifting pipe is welded to the top end face of each base, and a lifting column is inserted into the top of the lifting pipe. A shock-absorbing pipe is screwed to the top end face of the lifting column, and a first damping rod is screwed to the bottom inner side of the shock-absorbing pipe. A top rod is inserted into the top of the shock-absorbing pipe, and a first connecting rod is welded to the top of one top rod. A second connecting rod is welded to the top of the other top rod, and the other end of the second connecting rod is inserted into the bottom of the other end of the first connecting rod. Several limiting holes are equidistantly opened on both the first and second connecting rods. A through hole is opened on the other top rod. A steel cable is provided on one top rod, and the other end of the steel cable passes through the through hole. Several support blocks are equidistantly inserted on the steel cable, and a second damping rod is screwed to the top end face of each support block. The telescopic end of the second damping rod passes through the limiting hole and is threaded with a threaded sleeve. A support pad is installed on the top of the threaded sleeve via a spherical universal joint.

[0007] Preferably, a sleeve is welded to the outside of the through hole, and the other end of the steel cable extends into the sleeve, with a screw rod threaded onto one side of the sleeve.

[0008] Preferably, a plurality of positioning holes are provided at equal intervals on one side of the outer wall of the second connecting rod, and a screw is installed on one side of the outer wall of the first connecting rod by means of threads, and one end of the screw extends to the positioning hole.

[0009] Preferably, a pair of guide rings are welded to both outer walls of the lifting tube, and a pair of guide rods are welded to both outer walls of the shock-absorbing tube, with one bottom end of the guide rod penetrating through the guide ring.

[0010] Preferably, the outer wall of the lifting pipe has a transmission port, and a drive box is screwed to the outside of the transmission port. A worm gear is installed in the center of the drive box through a rotating shaft. A worm is provided below the bottom of the worm gear, and the worm and the worm gear mesh with each other. One end of the worm passes through the drive box and is welded with a hand crank. The outer wall of the lifting column has a toothed groove, and the worm gear meshes with the toothed groove.

[0011] Preferably, the outer wall of the lifting tube is hinged with a gas spring support rod, and the telescopic end of the gas spring support rod is equipped with a foot through a pivot, and the bottom end face of the foot is provided with anti-slip texture.

[0012] Preferably, a number of ground-inserting cones are welded at equal intervals on the bottom end face of the base, and fixing openings are provided around the top of the base.

[0013] Preferably, the support pad is made of rubber material and is arc-shaped.

[0014] The beneficial effects of this utility model are:

[0015] 1. The steel cable, the second damping rod, and the support pad form the first round of protection. If the pressure is too great and the steel cable breaks or comes out of the casing, the first connecting rod and the second connecting rod will form the second round of protection, and the first damping rod will provide buffering. Multiple protections help improve the safety support effect of the equipment. In addition, the equipment supports a large range, which can increase the escape time in the event of a mine collapse and improve the effectiveness of the equipment. At the same time, the limiting hole restricts the position of the second damping rod, which can ensure that the pressure on the second damping rod can be transmitted to the steel cable in the event of a collapse.

[0016] 2. By cranking the hand crank, the worm gear drives the worm wheel to rotate. The worm wheel and tooth groove can lift the lifting column, thereby raising the positions of the first and second connecting rods until the support pad is in contact with the inner wall of the mine. This is beneficial for use in mines of different heights. By rotating the gas spring support rod, the outriggers can be brought into contact with the ground, which can improve the support effect of the lifting pipe. The anti-slip texture can improve the anti-slip effect of the outriggers. The ground cone can increase the grip of the base. The fixing port can be used to connect the base to the ground with bolts to prevent the base from loosening. Attached Figure Description

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0018] Figure 1 This is an isometric view of the entire utility model;

[0019] Figure 2 This is a schematic diagram of the bottom structure of this utility model;

[0020] Figure 3 This is an overall sectional view of the present invention;

[0021] Figure 4 This is a schematic diagram of the overall structure of this utility model.

[0022] In the diagram: 1. Base; 2. Lifting tube; 3. Lifting column; 4. Shock absorber tube; 5. First damping rod; 6. Top rod; 7. First connecting rod; 8. Second connecting rod; 9. Limiting hole; 10. Through hole; 11. Steel cable; 12. Support block; 13. Second damping rod; 14. Threaded sleeve; 15. Support pad; 16. Sleeve; 17. Tightening rod; 18. Positioning hole; 19. Screw; 20. Guide ring; 21. Guide rod; 22. Transmission port; 23. Drive box; 24. Worm gear; 25. Worm; 26. Hand crank; 27. Gear groove; 28. Gas spring support rod; 29. ​​Support leg; 30. Anti-slip texture; 31. Grounding cone; 32. Fixing port. Detailed Implementation

[0023] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0024] like Figure 1-4As shown in the figure, this embodiment proposes a safety support device for coal mine tunneling operations, including two bases 1, which are arranged opposite to each other. A lifting pipe 2 is welded to the top end face of the base 1, and a lifting column 3 is inserted into the top of the lifting pipe 2. A shock-absorbing pipe 4 is screwed to the top end face of the lifting column 3, and a first damping rod 5 is screwed to the bottom inner side of the shock-absorbing pipe 4. A top rod 6 is inserted into the top of the shock-absorbing pipe 4, and a first connecting rod 7 is welded to the top of one top rod 6. A second connecting rod 8 is welded to the top of the other top rod 6, and the other end of the second connecting rod 8 is inserted into the bottom of the other end of the first connecting rod 7. Several limiting holes 9 are equally spaced on both the first connecting rod 7 and the second connecting rod 8. A through hole 10 is opened on the other top rod 6, and a steel cable is provided on one top rod 6. 11, and the other end of the steel cable 11 passes through the through hole 10. Several support blocks 12 are inserted at equal intervals on the steel cable 11, and a second damping rod 13 is screwed to the top end face of the support block 12. The telescopic end of the second damping rod 13 passes through the limiting hole 9 and is threadedly installed with a threaded sleeve 14. The top of the threaded sleeve 14 is installed with a support pad 15 through a spherical universal joint. A sleeve 16 is welded to the outside of the through hole 10, and the other end of the steel cable 11 extends into the sleeve 16. A screw rod 17 is threadedly installed on one side of the sleeve 16. By screwing the screw rod 17, the steel cable 11 is squeezed, thereby fixing the length of the steel cable 11. Several positioning holes 18 are equally spaced on one side of the outer wall of the second connecting rod 8. A screw rod 19 is threadedly installed on one side of the outer wall of the first connecting rod 7. One end extends to the positioning hole 18. By turning the screw 19, it is inserted into the positioning hole 18, which can connect the first connecting rod 7 and the second connecting rod 8. A pair of guide rings 20 are welded to both outer walls of the lifting tube 2, and a pair of guide rods 21 are welded to both outer walls of the shock-absorbing tube 4. One end of the bottom of the guide rod 21 passes through the guide ring 20. The guide rod 21 and the guide ring 20 can keep the shock-absorbing tube 4 stable during the lifting process. A transmission port 22 is opened on the outer wall of the lifting tube 2, and a drive box 23 is screwed to the outside of the transmission port 22. A worm gear 24 is installed in the center of the drive box 23 through a rotating shaft. A worm 25 is provided below the bottom of the worm gear 24, and the worm 25 meshes with the worm gear 24. One end of the worm 25 passes through the drive box 23. A hand crank 26 is welded to the base 1. The outer wall of the lifting column 3 has a toothed groove 27, and the worm gear 24 meshes with the toothed groove 27. By cranking the hand crank 26, the worm 25 drives the worm gear 24 to rotate. The worm gear 24 and the toothed groove 27 can lift the lifting column 3. A gas spring support rod 28 is hinged to the outer wall of the lifting tube 2. The telescopic end of the gas spring support rod 28 is mounted with a foot 29 via a pivot. The bottom end face of the foot 29 has anti-slip texture 30. Rotating the gas spring support rod 28 allows the foot 29 to contact the ground, improving the support effect on the lifting tube 2. The anti-slip texture 30 enhances the anti-slip effect of the foot 29. Several ground-inserting cones 31 are welded equidistantly to the bottom end face of the base 1. Fixing openings 32 are provided around the top of the base 1.The ground-inserting cone 31 increases the grip of the base 1. The fixing port 32 allows bolts to be used to connect the base 1 to the ground, preventing it from loosening. The support pad 15 is made of rubber and is arc-shaped.

[0025] The first damping rod 5, the second damping rod 13, and the gas spring support rod 28 used in this embodiment are all existing mature technologies, so they will not be described in detail below. The lifting pipe 2, the lifting column 3, the shock absorber pipe 4, the top rod 6, the first connecting rod 7, and the second connecting rod 8 are all made of high carbon steel. In use, by placing the equipment on both sides of the mine shaft, the base 1 is connected to the ground with bolts at the fixing port 32 to prevent the base 1 from loosening. By shaking the hand crank 26, the worm gear 25 can drive the worm wheel 24 to rotate. The worm wheel 24 and the tooth groove 27 can be used to lift the lifting column 3, thereby making the first connecting rod 7 and the second connecting rod 8 lift the first connecting rod 8. The positions of connecting rod 7 and the second connecting rod 8 are raised until the support pad 15 is in contact with the inner wall of the mine. When the mine collapses, the steel cable 11 and the second damping rod 13 will form the first round of protection. If the pressure is too great and the steel cable 11 breaks or comes out of the sleeve 16, the first connecting rod 7 and the second connecting rod 8 will form the second round of protection and be buffered by the first damping rod 5. Multiple protections help to improve the safety support effect of the equipment. By rotating the gas spring support rod 28 to make the foot 29 contact the ground, the support effect of the lifting pipe 2 can be improved. The anti-slip texture 30 can improve the anti-slip effect of the foot 29.

[0026] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A safety support device for coal mine tunneling operations, comprising two bases (1), characterized in that, Two bases (1) are arranged opposite each other. A lifting tube (2) is welded to the top end face of the base (1), and a lifting column (3) is inserted into the top of the lifting tube (2). A shock-absorbing tube (4) is screwed to the top end face of the lifting column (3), and a first damping rod (5) is screwed to the bottom inner side of the shock-absorbing tube (4). A top rod (6) is inserted into the top of the shock-absorbing tube (4), and a first connecting rod (7) is welded to the top of one top rod (6). A second connecting rod (8) is welded to the top of the other top rod (6), and the other end of the second connecting rod (8) is inserted into the bottom of the other end of the first connecting rod (7). The connecting rod (7) and the second connecting rod (8) are provided with several limiting holes (9) at equal intervals. The other top rod (6) is provided with a through hole (10). A steel cable (11) is provided on one of the top rods (6), and the other end of the steel cable (11) passes through the through hole (10). Several support blocks (12) are inserted at equal intervals on the steel cable (11), and a second damping rod (13) is screwed to the top end face of the support block (12). The telescopic end of the second damping rod (13) passes through the limiting hole (9) and is fitted with a threaded sleeve (14) by a thread. The top of the threaded sleeve (14) is fitted with a support pad (15) by a spherical universal joint.

2. The safety support device for coal mine tunneling operations according to claim 1, characterized in that, The through hole (10) is welded to the outside of a sleeve (16), and the other end of the steel cable (11) extends into the sleeve (16). A screw rod (17) is threaded onto one side of the sleeve (16).

3. A safety support device for coal mine tunneling operations according to claim 1, characterized in that, The second connecting rod (8) has several positioning holes (18) evenly spaced on one side of its outer wall. The first connecting rod (7) has a screw (19) threaded onto one side of its outer wall, and one end of the screw (19) extends to the positioning hole (18).

4. A safety support device for coal mine tunneling operations according to claim 1, characterized in that, A pair of guide rings (20) are welded to both sides of the outer wall of the lifting pipe (2), and a pair of guide rods (21) are welded to both sides of the outer wall of the shock-absorbing pipe (4), with one end of the bottom of the guide rod (21) passing through the guide ring (20).

5. A safety support device for coal mine tunneling operations according to claim 1, characterized in that, The outer wall of the lifting pipe (2) is provided with a transmission port (22), and a drive box (23) is screwed to the outside of the transmission port (22). A worm wheel (24) is installed in the center of the drive box (23) through a rotating shaft. A worm (25) is provided below the bottom of the worm wheel (24), and the worm (25) meshes with the worm wheel (24). One end of the worm (25) passes through the drive box (23) and is welded with a hand crank (26). The outer wall of the lifting column (3) is provided with a tooth groove (27), and the worm wheel (24) meshes with the tooth groove (27).

6. A safety support device for coal mine tunneling operations according to claim 1, characterized in that, The outer wall of the lifting tube (2) is hinged with a gas spring support rod (28), and the telescopic end of the gas spring support rod (28) is equipped with a foot (29) through a pivot. The bottom end face of the foot (29) is provided with anti-slip texture (30).

7. A safety support device for coal mine tunneling operations according to claim 1, characterized in that, The bottom end face of the base (1) is welded with several ground-inserting cones (31) at equal intervals, and the top of the base (1) is provided with fixing holes (32) around all four sides.

8. A safety support device for coal mine tunneling operations according to claim 1, characterized in that, The support pad (15) is made of rubber material and is arc-shaped.

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