An impact-resistant coal mine tunnel support device

Abstract

The present invention belongs to the technical field of tunnel support, specifically to an impact-resistant coal mine tunnel support device, comprising a support frame body, a top shaft installed above the support frame body, a telescopic top rod slidingly provided inside the top shaft, a support ring plate fixedly installed on the upper end face of the telescopic top rod, the support ring plate contacts the top surface of the coal mine tunnel, support frames are installed on both sides of the support frame body, and multiple groups of conical rods are installed at the bottom of the support frame; when used specifically, the support frame body in the embodiment of the present invention is moved to a suitable position of the coal mine tunnel, and then the support ring plate is pressed against the top surface of the coal mine tunnel, and then each group of conical rods and each group of conical frames are embedded into the ground of the coal mine, and this embedding method can be that the staff uses an external hammer to hammer in each group of conical rods and each group of conical frames, so that the support device in the present invention can be quickly assembled, thereby improving the safety and stability of the tunnel.

Description

Technical Field

[0001] The invention belongs to the technical field of tunnel support, in particular to an impact-resistant coal mine tunnel support device. Background Art

[0002] Coal mining in my country is primarily done underground, requiring the excavation of numerous tunnels. Maintaining smooth tunnels and stable surrounding rock using tunnel support is crucial for coal mine construction and production. The fundamental purpose of tunnel support is to mitigate surrounding rock movement, preventing excessive reduction in tunnel cross-section, and preventing the collapse of dispersed and damaged surrounding rock.

[0003] The existing technology has also proposed some solutions for coal mine tunnel support. For example, a Chinese patent with announcement number CN221002822U discloses a coal mine tunnel support mechanism, including a support plate, the four corners of the bottom surface of the support plate are fixedly connected to support legs, the bottom surfaces of the four support legs are fixedly connected to a support base, the top of the support plate is provided with a top plate, and the middle bearing sleeve on the top of the support plate is connected to a connecting shaft. Through the arrangement of the top plate, connecting shaft, connecting frame, drive motor, screw, connecting sleeve, driving gear and driven gear, the top plate can be moved up and down, and the height of the top plate can be adjusted, so that the device can support tunnels of different heights, which is more convenient to use.

[0004] Although the above technical solution can support tunnels at different heights, there are still other problems in its actual use. As the coal seam is mined, the rock strata supporting the tunnel are prone to slippage, and it is difficult to absorb the impact force caused by the slippage of the rock strata, resulting in low safety.

[0005] To this end, the present invention provides an impact-resistant coal mine tunnel supporting device. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is: the impact-resistant coal mine tunnel support device described in the present invention includes a support frame body, a top shaft is installed on the top of the support frame body, a telescopic top rod is slidably arranged inside the top shaft, and a support ring plate is fixedly installed on the upper end surface of the telescopic top rod, and the support ring plate is in contact with the top surface of the coal mine tunnel. Support frames are installed on both sides of the support frame body, and multiple groups of tapered rods are installed at the bottom of the support frame. The multiple groups of tapered rods are used to be stuck in the bottom of the coal mine tunnel. Fixed frames are fixedly installed on the sides of the two groups of support frames, and multiple groups of tapered frames are installed on both sides of the bottom of the fixed frame. It should be noted that the surface of the support ring plate is sleeved with rubber, and the material of the support frame, telescopic top rod and fixed frame are all high-strength steel, such as Q or higher-strength steel. The main frame is made in this way, and an impact-resistant layer is added inside the telescopic top rod and the fixed frame. The impact-resistant layer can be made of high-elasticity materials such as rubber and polyurethane to absorb impact energy and reduce damage to the support structure caused by impact.

[0008] Preferably, the opposing surfaces of the two groups of support frames are provided with embedding grooves, the side walls of the telescopic top rods are installed with fastening clamps, and telescopic springs are sleeved at the contact position between the telescopic top rods and the supporting ring plates. The shape of the fastening clamps is adapted to the shape of the embedding grooves, and a plurality of embedding grooves are provided, and are designed to be equidistant from top to bottom.

[0009] Preferably, the end face of the fastening clamp is installed with contact 1, the inner wall of the lowermost embedded groove is installed with contact 2, the shape of the fastening clamp is arc-shaped, and the surface of the embedded groove is provided with rounded corners.

[0010] Preferably, a top plate is slidably provided inside each of the fixed frames, the top end of the top plate is facing the lower end surface of the support ring plate, and a jacking unit is provided inside the fixed frame, and the jacking unit is used to drive the top plate to move toward the lower end surface of the support ring plate; during operation, when the coal mine tunnel is impacted, under the action of the jacking unit, the top plate will move to one side of the support ring plate, causing the entire support device to deform to a certain extent, so that the entire support device absorbs part of the energy due to deformation, thereby reducing the possibility of fracture and improving the impact resistance effect.

[0011] Preferably, the jacking unit includes a transverse axis fixedly installed inside the fixed frame, the outer circumference of the transverse axis is rotatably provided with a driven wheel, the interior of the fixed frame is slidably provided with a toothed plate 1, the lower end surface of the top plate is provided with a toothed plate 2, the driven wheel is meshed with the toothed plate 1 and the toothed plate 2 respectively, the lower end surface of the supporting ring plate is provided with a connecting bracket, the lower end surface of the connecting bracket contacts with the upper end surface of the toothed plate 1, the end of the connecting bracket is connected to the side end of the telescopic top rod, and the interior of the fixed frame is provided with a toothed plate 1 and a toothed plate 2. The limit groove is adapted to the tooth plate 2; during operation, when the support ring plate is impacted, the support ring plate and the telescopic top rod below it will move a certain distance, that is, the support ring plate will drive the connecting bracket to move, and the connecting bracket will drive the tooth plate to move down. Since the driven wheel is respectively engaged with the tooth plate 1 and the tooth plate 2, when the tooth plate moves down, the tooth plate 2 will move upward, that is, the tooth plate 2 will drive the top plate to move upward, that is, the top plate will move to the side close to the support ring plate. In this way, the impact energy can be quantified under the mutual movement of the tooth plate 1 and the tooth plate 2.

[0012] Preferably, a fastening frame is installed on the outer side of the fixed frame, and the fastening frame is composed of a plurality of connecting rods. Two groups of deflection plates are rotatably provided on the surface of the fastening frame, and the two groups of deflection plates are directed toward the bottom of the support ring plate; during operation, when the top plate moves, the top plate will move toward the side close to the deflection plate. Since the two groups of deflection plates are rotatably provided on the surface of the fastening frame, the two groups of deflection plates will move toward the side close to the support ring plate and contact the support ring plate. In this way, the support device can adaptively deform and absorb energy according to the impact force.

[0013] Preferably, two groups of pressure rods are installed at the top of the top plate, and the two groups of pressure rods are hinged to the side wall of the deflection plate on the side away from the top plate, and an attachment plate is installed on the side of the deflection plate close to the support ring plate, and the surface of the attachment plate is provided with friction patterns; during operation, when the top rod moves toward the side close to the deflection plate, the top rod will drive the two groups of pressure rods to contact the side wall of the deflection plate. Since the end of the pressure rod is hinged to the side wall of the deflection plate, the deflection plate can conveniently drive the attachment plate to press on the lower end surface of the support ring plate, that is, further give the support ring plate a certain supporting force, thereby improving the supporting effect of the device.

[0014] Preferably, a through groove is provided on the lower side of the interior of the tooth plate 1, and a circular rod is installed on the lower side of the interior of the fixed frame, the circular rod extends into the through groove, and a telescopic elastic rod is installed on the top of the circular rod, and a limit spring is sleeved on the outer peripheral surface of the telescopic elastic rod; during operation, when the tooth plate moves down, the tooth plate 1 will move a certain distance on the outside of the circular rod. Since the telescopic elastic rod is installed on the top of the circular rod, the tooth plate 1 will squeeze the telescopic elastic rod and the limit spring on its surface when it moves down, which is beneficial for the device to achieve a gradient anti-impact effect and facilitate its staged absorption of impact energy.

[0015] Preferably, the groove wall of the through groove is provided with a plurality of slots, and a limiting slot is fixedly installed on the outer wall of the circular rod, the shape of the limiting slot is adapted to the shape of the slot, and the surface of the slot is provided with an arc angle; when working, in the initial state, the limiting slot is located inside the slot, and only when the support ring plate is subjected to a large impact, that is, the impact force is greater than the clamping force of the limiting slot in the slot, the tooth plate will move downward, so that the stability effect of the support device is improved under a smaller impact.

[0016] Preferably, a linkage frame is installed below the tooth plate 1, and multiple groups of tapered rods are slidably arranged at the bottom of the support frame through rectangular plates, and the side of the linkage frame away from the tooth plate 1 is in contact with the rectangular plate connected to the tapered rods.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. The impact-resistant coal mine tunnel support device described in the present invention is slidably arranged inside the top shaft through a telescopic top rod, so the telescopic top rod will drive the fastening clamp to move downward, that is, move to the inside of the embedded groove in the middle. When the impact force is too large, that is, the impact force is greater than the mutual clamping force between the embedded groove and the fastening clamp, the telescopic top rod will drive the fastening clamp to move to the inside of the lowest embedded groove, that is, contact one and contact two will contact. At this time, the external circuit is connected, and the external controller will issue an alarm state, that is, in this displacement state of the fastening clamp, the danger of the tunnel is too high.

[0019] 2. The impact-resistant coal mine tunnel support device described in the present invention drives the tooth plate to move downward by connecting the bracket. Since the driven wheel is engaged with tooth plate one and tooth plate two respectively, when the tooth plate moves downward, tooth plate two will move upward, that is, tooth plate two will drive the top plate to move upward, that is, the top plate will move toward the side close to the support ring plate. In this way, the impact energy can be quantified under the mutual movement of tooth plate one and tooth plate two. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] Figure 1 is a perspective view of the present invention;

[0022] Figure 2 It is a partial structural schematic diagram of the support frame in the present invention;

[0023] Figure 3 It is a schematic diagram of the cross-sectional structure of the support frame body in the present invention;

[0024] Figure 4 It is a schematic diagram of the cross-sectional structure of the support frame in the present invention;

[0025] Figure 5It is a partial structural diagram of the fastening clamp in the present invention;

[0026] Figure 6 It is a partial structural schematic diagram of the driven wheel in the present invention;

[0027] Figure 7 It is a structural schematic diagram of the fastening frame in the present invention;

[0028] Figure 8 It is a structural schematic diagram of the attachment plate in the present invention;

[0029] Figure 9 It is a structural schematic diagram of the present invention;

[0030] Figure 10 It is a structural schematic diagram of the card slot and the limit card seat in the present invention.

[0031] In the figure: 1. Support frame body; 2. Top shaft; 3. Telescopic top rod; 301. Support ring plate; 4. Support frame; 401. Fixed frame; 402. Conical frame 2; 5. Conical rod; 6. Embedded groove; 7. Fastening clamp; 8. Contact 1; 9. Contact 2; 10. Top plate; 101. Tooth plate 2; 11. Horizontal shaft; 12. Driven wheel; 13. Tooth plate 1; 14. Connecting bracket; 15. Fastening frame; 16. Deflection plate; 17. Pressure rod; 18. Attachment plate; 19. Through slot; 20. Round rod; 21. Telescopic elastic rod; 22. Card slot; 23. Limiting card seat; 24. Linkage frame. DETAILED DESCRIPTION

[0032] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0033] like Figures 1 to 5 As shown, an impact-resistant coal mine tunnel support device according to an embodiment of the present invention includes a support frame body 1, a top shaft 2 is installed on the top of the support frame body 1, a telescopic top rod 3 is slidably provided inside the top shaft 2, a support ring plate 301 is fixedly installed on the upper end surface of the telescopic top rod 3, and the support ring plate 301 is in contact with the top surface of the coal mine tunnel, support frames 4 are installed on both sides of the support frame body 1, and multiple groups of tapered rods 5 are installed at the bottom of the support frame 4, and the multiple groups of tapered rods 5 are used to be clamped into the bottom of the coal mine tunnel, and fixed frames 401 are fixedly installed on the sides of the two groups of support frames 4, and multiple groups of tapered frames 402 are installed on both sides of the bottom of the fixed frame 401;

[0034] It should be noted that the surface of the support ring plate 301 is sleeved with rubber, and the support frame 4, the telescopic top rod 3, and the fixed frame 401 are all made of high-strength steel, such as Q345 or higher-strength steel, and an impact-resistant layer is added inside the telescopic top rod 3 and the fixed frame 401. The impact-resistant layer can be made of highly elastic materials such as rubber and polyurethane. The main frame made in this way can absorb impact energy and reduce damage to the support structure caused by the impact;

[0035] During specific use, the support frame body 1 in the embodiment of the present invention is moved to a suitable position in the coal mine tunnel, and then the support ring plate 301 is placed on the top surface of the coal mine tunnel. Then, each group of conical rods 5 and each group of conical frames 2 402 are embedded in the ground of the coal mine. This embedding method can be achieved by the staff using an external hammer to hammer in each group of conical rods 5 and each group of conical frames 2 402. In this way, the support device in the present invention can be quickly assembled, which improves the safety and stability of the tunnel, and can form a gradient impact resistance effect from top to bottom, and can absorb impact energy in stages, so as to ensure that the tunnel can be effectively supported in a complex coal mine environment to prevent collapse and impact accidents.

[0036] The opposing surfaces of the two groups of support frames 4 are provided with embedding grooves 6, and the side walls of the telescopic push rods 3 are installed with fastening clamps 7. A telescopic spring is sleeved at the contact position between the telescopic push rods 3 and the support ring plate 301. The shape of the fastening clamps 7 is adapted to the shape of the embedding grooves 6. There are multiple embedding grooves 6, and they are designed to be equidistant from top to bottom.

[0037] When working, in the initial state, refer to the attached Figure 4 As shown, the fastening clamp 7 on the outside of the telescopic top rod 3 is located inside the uppermost embedding groove 6. In this way, when the embedding groove 6 and the fastening clamp 7 are engaged with each other, the telescopic top rod 3 can attach the support ring plate 301 to the lower end surface of the coal mine tunnel, and telescopic springs are installed on the surface of the support ring plate 301 and the telescopic top rod 3, which can reduce the impact force on the overall support device to a certain extent.

[0038] The end surface of the fastening clamp 7 is installed with a contact 1 8, and the inner wall of the bottom embedded groove 6 is installed with a contact 2 9. The shape of the fastening clamp 7 is an arc, and the surface of the embedded groove 6 is provided with a rounded corner. When working, refer to the attached Figure 4 and Figure 5As shown, in the initial state, contact 1 8 and contact 2 9 are not in contact. When the supporting ring plate 301 and the telescopic push rod 3 are subjected to an impact force, and the impact force is greater than the mutual clamping force between the embedded groove 6 and the fastening clamp 7, and the telescopic push rod 3 is slidably arranged inside the top shaft 2, the telescopic push rod 3 will drive the fastening clamp 7 to move downward, that is, move to the middle embedded groove 6. When the impact force is too large, that is, the impact force is greater than the mutual clamping force between the embedded groove 6 and the fastening clamp 7, the telescopic push rod 3 will drive the fastening clamp 7 to move to the bottom embedded groove 6, that is, contact 1 8 and contact 2 9 will contact. At this time, the external circuit is connected, and the external controller will issue an alarm state, that is, in this displacement state of the fastening clamp 7, the danger of the lane is too high.

[0039] It should be noted that when a coal mine tunnel is impacted, it is generally impacted step by step, that is, the fastening clamp 7 will gradually fall into different embedding grooves 6, which makes it convenient to test the impact performance of the tunnel.

[0040] A top plate 10 is slidingly arranged inside each of the fixed frames 401, and the top end of the top plate 10 faces the lower end surface of the support ring plate 301. A jacking unit is arranged inside the fixed frame 401, and the jacking unit is used to drive the top plate 10 to move toward the lower end surface of the support ring plate 301; during operation, when the coal mine tunnel is impacted, under the action of the jacking unit, the top plate 10 will move to one side of the support ring plate 301, so that the entire support device is deformed to a certain extent, so that the entire support device absorbs part of the energy due to deformation, thereby reducing the possibility of fracture and improving the impact resistance effect.

[0041] like Figures 4 to 10 As shown, the jacking unit includes a transverse shaft 11 fixedly installed inside the fixed frame 401, and a driven wheel 12 is rotatably provided on the outer circumference of the transverse shaft 11, and a tooth plate 13 is slidably provided inside the fixed frame 401. The lower end surface of the top plate 10 is installed with a tooth plate 2 101, and the driven wheel 12 is meshed and connected with the tooth plate 13 and the tooth plate 2 101 respectively, and the lower end surface of the supporting ring plate 301 is installed with a connecting bracket 14, the lower end surface of the connecting bracket 14 is in contact with the upper end surface of the tooth plate 13, and the end of the connecting bracket 14 is connected to the side end of the telescopic top rod 3, and the interior of the fixed frame 401 is provided with a limiting groove adapted to the tooth plate 13 and the tooth plate 2 101;

[0042] During operation, when the supporting ring plate 301 is impacted, the supporting ring plate 301 and the telescopic top rod 3 below it will move a certain distance, that is, the supporting ring plate 301 will drive the connecting bracket 14 to move, and the connecting bracket 14 will drive the tooth plate 13 to move downward. Since the driven wheel 12 is respectively engaged with the tooth plate 13 and the tooth plate 2 101, when the tooth plate 13 moves downward, the tooth plate 2 101 will move upward, that is, the tooth plate 2 101 will drive the top plate 10 to move upward, that is, the top plate 10 will move to the side close to the supporting ring plate 301. In this way, the impact energy can be quantified under the mutual movement of the tooth plate 13 and the tooth plate 2 101.

[0043] A fastening frame 15 is installed on the outside of the fixed frame 401. The fastening frame 15 is composed of a plurality of connecting rods. Two groups of deflection plates 16 are rotatably provided on the surface of the fastening frame 15, and the two groups of deflection plates 16 are directed toward the bottom of the support ring plate 301. During operation, when the top plate 10 moves, the top plate 10 will move toward the side close to the deflection plates 16. Since the two groups of deflection plates 16 are rotatably provided on the surface of the fastening frame 15, the two groups of deflection plates 16 will move toward the side close to the support ring plate 301 and contact the support ring plate 301. In this way, the support device can adaptively deform and absorb energy according to the impact force.

[0044] Two groups of pressure rods 17 are installed at the top of the top plate 10, and the two groups of pressure rods 17 are hinged to the side wall of the deflection plate 16 on the side away from the top plate 10. The side of the deflection plate 16 close to the support ring plate 301 is installed with an attachment plate 18, and the surface of the attachment plate 18 is provided with friction patterns; during operation, when the top plate 10 moves toward the side close to the deflection plate 16, the top plate 10 will drive the two groups of pressure rods 17 to contact the side wall of the deflection plate 16. Since the end of the pressure rod 17 is hinged to the side wall of the deflection plate 16, the deflection plate 16 can conveniently drive the attachment plate 18 to press on the lower end surface of the support ring plate 301, that is, further give the support ring plate 301 a certain supporting force, thereby improving the supporting effect of the device.

[0045] A through groove 19 is provided on the lower side of the interior of the tooth plate 13, and a circular rod 20 is installed on the lower side of the interior of the fixed frame 401. The circular rod 20 extends into the through groove 19, and a telescopic elastic rod 21 is installed on the top of the circular rod 20. The outer peripheral surface of the telescopic elastic rod 21 is sleeved with a limit spring. During operation, when the tooth plate 13 moves downward, the tooth plate 13 will move a certain distance on the outside of the circular rod 20. Since the telescopic elastic rod 21 is installed on the top of the circular rod 20, the tooth plate 13 will squeeze the telescopic elastic rod 21 and the limit spring on its surface when moving downward, which is beneficial for the device to achieve a gradient impact resistance effect and facilitate its staged absorption of impact energy.

[0046] The groove wall of the through groove 19 is provided with a plurality of slots 22, and a limiting slot seat 23 is fixedly installed on the outer wall of the circular rod 20. The shape of the limiting slot seat 23 is adapted to the shape of the slot 22, and the surface of the slot 22 is provided with an arc angle; when working, in the initial state, the limiting slot seat 23 is located inside the slot 22. Only when the support ring plate 301 is subjected to a large impact, that is, the impact force is greater than the clamping force of the limiting slot seat 23 in the slot 22, the tooth plate 13 will move downward, so that the stability effect of the support device is improved under a smaller impact.

[0047] A linkage frame 24 is installed below the tooth plate 13, and multiple groups of tapered rods 5 are slidably arranged at the bottom of the support frame 4 through a rectangular plate. The side of the linkage frame 24 away from the tooth plate 13 is in contact with the rectangular plate connected to the tapered rods 5.

[0048] During operation, the support frame body 1 in the embodiment of the present invention is moved to a suitable position in the coal mine tunnel, and then the support ring plate 301 is placed against the top surface of the coal mine tunnel. Then, each set of tapered rods 5 and each set of tapered frames 402 are embedded in the ground of the coal mine. This embedding method can be achieved by hammering each set of tapered rods 5 and each set of tapered frames 402 using an external hammer. In this way, the support device of the present invention can be quickly assembled, thereby improving the safety and stability of the tunnel.

[0049] And it can form a gradient anti-impact effect from top to bottom, and can absorb the impact energy in stages, so as to ensure that the tunnel can be effectively supported in the complex coal mine environment and prevent the occurrence of collapse and impact accidents; refer to the attached Figure 4 and Figure 5As shown, in the initial state, contact 1 8 and contact 2 9 are not in contact. When the supporting ring plate 301 and the telescopic push rod 3 are subjected to an impact force, and the impact force is greater than the mutual clamping force between the embedded groove 6 and the fastening clamp 7, and the telescopic push rod 3 is slidably arranged inside the top shaft 2, the telescopic push rod 3 will drive the fastening clamp 7 to move downward, that is, move to the middle embedded groove 6. When the impact force is too large, that is, the impact force is greater than the mutual clamping force between the embedded groove 6 and the fastening clamp 7, the telescopic push rod 3 will drive the fastening clamp 7 to move to the bottom embedded groove 6, that is, contact 1 8 and contact 2 9 will be in contact. At this time, the external circuit is connected, and the external controller will issue an alarm state, that is, in this case When the fastening clamp 7 is in the displacement state, the danger of the lane is too high; when the supporting ring plate 301 is impacted, the supporting ring plate 301 and the telescopic top rod 3 below it will move a certain distance, that is, the supporting ring plate 301 will drive the connecting bracket 14 to move, and the connecting bracket 14 will drive the tooth plate 13 to move downward. Since the driven wheel 12 is respectively engaged with the tooth plate 13 and the tooth plate 2 101, when the tooth plate 13 moves downward, the tooth plate 2 101 will move upward, that is, the tooth plate 2 101 will drive the top plate 10 to move upward, that is, the top plate 10 will move to the side close to the supporting ring plate 301. In this way, the impact energy can be quantified under the mutual movement of the tooth plate 13 and the tooth plate 2 101.

[0050] When the top plate 10 moves, the top plate 10 will move to the side close to the deflection plate 16. Since the two sets of deflection plates 16 are rotatably arranged on the surface of the fastening frame 15, the two sets of deflection plates 16 will move to the side close to the support ring plate 301 and contact the support ring plate 301. In this way, the support device can adaptively deform and absorb energy according to the impact force; when the top plate 10 moves to the side close to the deflection plate 16, the top plate 10 will drive the two sets of pressure rods 17 to contact the side wall of the deflection plate 16. Since the end of the pressure rod 17 is hinged to the side wall of the deflection plate 16, , so the deflection plate 16 can easily drive the attachment plate 18 to press on the lower end surface of the support ring plate 301, that is, further give the support ring plate 301 a certain support force, thereby improving the support effect of the device; when the tooth plate 13 moves downward, the tooth plate 13 will move a certain distance outside the circular rod 20. Since the telescopic elastic rod 21 is installed on the top of the circular rod 20, the tooth plate 13 will squeeze the telescopic elastic rod 21 and the limit spring on its surface when moving downward, which is beneficial for the device to achieve a gradient impact resistance effect and facilitate its staged absorption of impact energy;

[0051] In the initial state, the limit clamp 23 is located inside the slot 22. Only when the support ring plate 301 is subjected to a large impact, that is, the impact force is greater than the clamping force of the limit clamp 23 in the slot 22, the tooth plate 13 will move downward, thereby improving the stability of the support device under smaller impacts.

[0052] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. An impact-resistant coal mine tunnel support device, characterized by: It includes a support frame body, a top shaft is installed on the top of the support frame body, a telescopic top rod is slidably provided inside the top shaft, a support ring plate is fixedly installed on the upper end surface of the telescopic top rod, the support ring plate is in contact with the top surface of the coal mine roadway, support frames are installed on both sides of the support frame body, multiple groups of tapered rods are installed at the bottom of the support frame, and the multiple groups of tapered rods are used to be stuck in the bottom of the coal mine roadway, and fixed frames are fixedly installed on the sides of the two groups of support frames, and multiple groups of tapered frames are installed on both sides of the bottom of the fixed frame; The opposing surfaces of the two groups of support frames are provided with embedded grooves, the side walls of the telescopic mandrels are installed with fastening clamps, and the contact position between the telescopic mandrels and the support ring plate is sleeved with a telescopic spring. The shape of the fastening clamps is adapted to the shape of the embedded grooves. A plurality of embedded grooves are provided, and are designed to be equidistant from top to bottom. A top plate is slidably provided inside each fixed frame, with the top end of the top plate facing the lower end surface of the supporting ring plate. A lifting unit is provided inside the fixed frame, and the lifting unit is used to drive the top plate to move toward the lower end surface of the supporting ring plate.

2. The impact-resistant coal mine tunnel support device according to claim 1, characterized in that: The end surface of the fastening clamp is installed with a contact point 1, and the inner wall of the lowermost embedded groove is installed with a contact point 2. The shape of the fastening clamp is an arc, and the surface of the embedded groove is provided with a rounded corner.

3. The impact-resistant coal mine tunnel support device according to claim 1, characterized in that: The lifting unit includes a transverse shaft fixedly installed inside the fixed frame, a driven wheel is rotatably provided on the outer circumference of the transverse shaft, a gear plate 1 is slidably provided inside the fixed frame, a gear plate 2 is installed on the lower end surface of the top plate, the driven wheel is meshed with gear plate 1 and gear plate 2 respectively, a connecting bracket is installed on the lower end surface of the supporting ring plate, the lower end surface of the connecting bracket contacts with the upper end surface of gear plate 1, the end of the connecting bracket is connected to the side end of the telescopic top rod, and a limiting groove adapted to gear plate 1 and gear plate 2 is opened inside the fixed frame.

4. The impact-resistant coal mine tunnel support device according to claim 3, characterized in that: A fastening frame is installed on the outer side of the fixed frame. The fastening frame is composed of a plurality of connecting rods. Two groups of deflection plates are rotatably provided on the surface of the fastening frame. The two groups of deflection plates face downwards of the supporting ring plate.

5. The impact-resistant coal mine tunnel support device according to claim 4, characterized in that: Two groups of pressure rods are installed on the top of the top plate. The sides of the two groups of pressure rods away from the top plate are hinged to the side walls of the deflection plate. An attachment plate is installed on the side of the deflection plate close to the supporting ring plate. The surface of the attachment plate is provided with friction patterns.

6. The impact-resistant coal mine tunnel support device according to claim 5, characterized in that: A through groove is provided on the lower side of the interior of the tooth plate 1, a circular rod is installed on the lower side of the interior of the fixed frame, the circular rod passes through the interior of the through groove, a telescopic elastic rod is installed on the top of the circular rod, and a limiting spring is sleeved on the outer circumference of the telescopic elastic rod.

7. The impact-resistant coal mine tunnel support device according to claim 6, characterized in that: The wall of the through-groove is provided with a plurality of slots, and a limit holder is fixedly mounted on the outer wall of the circular rod. The shape of the limit holder matches the shape of the slot, and the surface of the slot is provided with an arc angle.

8. The impact-resistant coal mine tunnel support device according to claim 4, characterized in that: A linkage frame is installed below the tooth plate 1, and multiple groups of tapered rods are slidably arranged on the bottom of the support frame through rectangular plates. The side of the linkage frame away from the tooth plate 1 is in contact with the rectangular plate connected to the tapered rods.

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