Gangue flying prevention protection device for uphill coal mining face
By using a lifting protective device to prevent gangue from flying during coal mining, the problem of damage to roadway facilities in uphill coal mining has been solved, achieving roadway protection and cost reduction.
Patent Information
- Application Number
- CN202422650895.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-31
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2034-10-31
AI Technical Summary
In the process of mining in an uphill coal mine, the gangue produced during blasting is prone to fly downwards, causing damage to the roadway facilities, and there is a lack of effective measures to prevent flying gangue.
A lifting protective device was designed, comprising a cylinder, a limit plate, a top beam, a winch, and a protective net. The protective net is opened and closed by the winch winding up the traction rope to pull the protective net to rotate, thus blocking the rushing gangue.
It effectively blocks the gangue generated by blasting, preventing it from rushing downwards, protecting tunnel facilities, and reducing mining costs.
Smart Images
Figure CN223661875U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of coal mining technology, specifically referring to a protective device for preventing flying coal debris in an uphill coal mining face. Background Technology
[0002] In the process of coal mine tunneling and mining, the uphill tunneling method is often encountered. This method involves drilling into the rock wall of the tunnel and then blasting with emulsion explosives. When blasting, all personnel must evacuate to a safe chamber for shelter, and a blasting warning is set up at the lower exit of the tunnel to prohibit all personnel from entering.
[0003] However, during blasting, due to the inclination of the roadway, a large amount of broken coal gangue is generated at the moment of blasting. Under the impact force, the coal gangue will fly downwards. Although personnel can be evacuated, it can easily damage the facilities in the roadway and increase the cost of coal mining. There are no good anti-flying gangue measures in the current technology. Therefore, improvements are needed. Utility Model Content
[0004] The technical problem this invention aims to solve is that in the prior art, when carrying out uphill blasting excavation, the gangue tends to fly downwards, and there is a lack of blocking and interception measures, which can easily lead to damage to facilities in the tunnel.
[0005] To achieve the above functions, the technical solution adopted by this utility model is as follows: A protective device for preventing flying coal debris in an uphill coal mine face includes a cylinder one, a limiting plate fixedly connected to the cylinder body of the cylinder one, a top beam connected to the upper end of the cylinder one, a side groove provided on the opposite side of the top beam, a top groove provided on the top of the top beam, a slider slidably provided in the side groove, a cylinder two provided in the side groove and connected to the slider, an installation component provided on the slider, a top plate spanning the upper end of the top beam, a lifting protective device provided on the top plate, and an auxiliary fixing component provided inside the limiting plate of the cylinder one. The lifting protective device includes a winch mounted on the top plate. A fixed plate is provided on the side of the top plate, and a guide wheel rotates at the end of the fixed plate. A rotating drum rotates on the mounting assembly, and a protective net is fixed to the rotating drum. A counterweight plate is provided at the bottom of the lower end of the protective net, and a traction rope is provided in the middle of the counterweight plate and wound around the winch through the guide wheel. By winding the winch, the traction rope pulls the protective net to rotate, thereby realizing the opening and closing of the protective net. When closed, the protective net can block the roadway and prevent the rolling rocks from continuing to rush down.
[0006] Furthermore, the mounting assembly includes a socket located on the side of the slider. A through shaft is inserted into the socket, and the rotating cylinder is sleeved and rotates on the through shaft. A fixing ring is provided on the through shaft, and bolt holes are provided around the fixing ring and the socket. A limiting block is provided at the upper end of the slider and slides in the top groove. The top plate is connected to the limiting block. The through shaft is inserted into the socket, blocked by the fixing ring, and bolts are screwed into the bolt holes to complete the installation and fixation of the through shaft.
[0007] Furthermore, the auxiliary fixing component includes a hoop plate that can be inserted between the limiting plates. The thickness of the hoop plate is equal to the distance between the limiting plates. A tap is threaded into the hoop plate. By turning the tap, the hoop plate can be fixed in the wall of the tunnel. The hoop plate can provide auxiliary fixing for the cylinder.
[0008] Preferably, the lower end of the top beam is provided with a spherical socket, and the end of the cylinder is adapted to the socket.
[0009] Preferably, both the limiting block and the top plate are provided with matching threaded holes, which facilitates the disassembly and installation of the top plate.
[0010] Preferably, the retaining ring fits precisely against the slider when the through shaft is inserted into the bottom of the insertion hole.
[0011] The beneficial effects achieved by adopting the above-described structure are as follows:
[0012] 1. This utility model, by setting up a lifting protective device, allows the winch to pull the counterweight plate when it is winding up, with the traction rope guided by the guide wheel. This causes the drum on the protective net to rotate on the shaft, enabling the protective net to be raised and lowered to close. When closed, the protective net can block the rolling gangue from above, preventing it from flying downwards and avoiding damage to facilities in the tunnel.
[0013] 2. This utility model, by setting up an installation component, allows the through shaft to be inserted into the insertion hole and fixed by the bolt hole, enabling flexible installation and disassembly of the through shaft. The slider can slide in the side groove, allowing adjustment of the vertical position of the protective net. Attached Figure Description
[0014] Figure 1 This is an overall structural diagram of a protective device against flying coal debris in an uphill coal mine face according to this utility model.
[0015] Figure 2 This is an exploded structural diagram of the installation components and slider of an uphill coal mine face anti-flying coal protection device according to the present invention;
[0016] Figure 3 for Figure 1A three-dimensional view of the central top beam from below;
[0017] Figure 4 for Figure 1 Another structural diagram of the auxiliary fixing component.
[0018] Among them, 1. Cylinder 1, 2. Limiting plate, 3. Top beam, 4. Side groove, 5. Top groove, 6. Sliding block, 7. Cylinder 2, 8. Top plate, 9. Installation component, 10. Lifting protective device, 11. Auxiliary fixing component, 12. Winch, 13. Fixing plate, 14. Guide wheel, 15. Drum, 16. Protective net, 17. Counterweight plate, 18. Traction rope, 19. Insertion hole, 20. Through shaft, 21. Fixing ring, 22. Bolt hole, 23. Limiting block, 24. Hoop plate, 25. Tap, 26. Column socket, 27. Threaded hole. Detailed Implementation
[0019] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0020] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0021] like Figure 1-4 This utility model discloses a protective device for preventing flying coal debris in an uphill coal mine face, comprising a cylinder 1, a limiting plate 2 fixedly connected to the cylinder body of the cylinder 1, a top beam 3 connected to the upper end of the cylinder 1, a spherical socket 26 at the lower end of the top beam 3, the end of the cylinder 1 being adapted to the socket 26, a side groove 4 on the opposite side of the top beam 3, a top groove 5 at the top of the top beam 3, a slider 6 slidably mounted in the side groove 4, a cylinder 7 mounted in the side groove 4 and connected to the slider 6, an installation component 9 mounted on the slider 6, a top plate 8 spanning across the upper end of the top beam 3, a lifting protective device 10 mounted on the top plate 8, and an auxiliary fixing component 11 within the limiting plate 2 of the cylinder 1.
[0022] like Figure 1The lifting protective device 10 includes a winch 12, which is mounted on the top plate 8. A fixing plate 13 is provided on the side of the top plate 8. A guide wheel 14 rotates at the end of the fixing plate 13. A rotating drum 15 rotates on the mounting assembly 9. A protective net 16 is fixedly connected to the rotating drum 15. A counterweight plate 17 is provided at the bottom of the lower end of the protective net 16. A traction rope 18 is provided in the middle of the counterweight plate 17 and is wound around the winch 12 through the guide wheel 14. By winding the winch 12, the traction rope 18 pulls the protective net 16 to rotate, thereby realizing the opening and closing of the protective net 16. When closed, the protective net 16 can block the roadway and prevent the rolling gangue from continuing to rush down.
[0023] like Figure 1-2 The mounting component 9 includes a socket 19 located on the side of the slider 6. A through shaft 20 is inserted into the socket 19. A rotating cylinder 15 is fitted onto the through shaft 20 and rotates on it. A fixing ring 21 is provided on the through shaft 20. Bolt holes 22 are provided around the fixing ring 21 and the socket 19. When the through shaft 20 is inserted into the bottom of the socket 19, the fixing ring 21 fits against the slider 6. A limiting block 23 is provided at the upper end of the slider 6 and slides in the top groove 5. The top plate 8 is connected to the limiting block 23. Both the limiting block 23 and the top plate 8 are provided with matching threaded holes 27. The threaded holes 27 facilitate the disassembly and installation of the top plate 8. The through shaft 20 is inserted into the socket 19 and blocked by the fixing ring 21. Bolts are screwed into the bolt holes 22 to complete the installation and fixation of the through shaft 20.
[0024] like Figure 1 and 4 The auxiliary fixing component 11 includes a hoop plate 24, which can be inserted between the limiting plates 2. The thickness of the hoop plate 24 is equal to the distance between the limiting plates 2. A tap 25 is threaded into the hoop plate 24. By turning the tap 25, the hoop plate 24 can be fixed in the wall of the tunnel. The hoop plate 24 can provide auxiliary fixing for the cylinder 1.
[0025] In practical use, during installation, first, the rotating drum 15 is fitted onto the through shaft 20, and both ends of the through shaft 20 are inserted into the insertion holes 19, so that the bolt holes 22 on the fixing ring 21 are aligned with the bolt holes 22 on the slider 6. By screwing the bolts into the bolt holes 22, the through shaft 20 can be locked and fixed. The top plate 8 is placed above the limiting block 23, and the top plate 8 can be fixed by screwing the bolts into the threaded holes 27. The traction rope 18 of the winch 12 is passed around the guide wheel 14 and fixed to the counterweight plate 17. This completes the installation of the protective net 16.
[0026] The cylinder 1 is erected near the side wall of the tunnel. By inserting the hoop 24 into the limiting plate 2 and turning the tap 25, the tap 25 is drilled into the tunnel wall, which can lock and fix the cylinder 1. The extension and retraction of the cylinder 1 can lift the top beam 3. At the same time, since the lower end face of the top beam 3 is provided with a spherical socket 26, the tilt angle of the top beam 3 can be adjusted to keep it parallel to the inclination angle of the tunnel.
[0027] During blasting and tunneling in coal mines, before blasting, the winch 12 releases the traction rope 18. Under the action of the counterweight plate 17, the protective net 16 rotates downwards. The protective net 16 can block the roadway, preventing flying debris generated by blasting from continuing to rush downwards and damaging facilities in the roadway. After use, the protective net 16 is raised again by the traction rope 18 without affecting the transportation of personnel and equipment in the roadway. This proposed solution has good application prospects and is easy to implement, making it worthy of promotion.
[0028] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.
Claims
1. A protective device for preventing flying coal debris at an uphill coal mine face, comprising a cylinder, wherein a limit plate is fixedly connected to the cylinder body of the cylinder, and a top beam is connected to the upper end of the cylinder, characterized in that: The top beam has a side groove on the opposite side and a top groove on the top. A slider is slidably installed in the side groove. A cylinder is installed in the side groove and connected to the slider. An installation component is installed on the slider. A top plate is provided across the upper end of the top beam. A lifting protective device is provided on the top plate. An auxiliary fixing component is provided in the limiting plate of the cylinder.
2. The anti-smog protection device for uphill coal mine faces according to claim 1, characterized in that: The lifting protective device includes a winch mounted on a top plate. A fixing plate is provided on the side of the top plate. A guide wheel rotates at the end of the fixing plate. A rotating drum rotates on the mounting assembly. A protective net is fixed to the rotating drum. A counterweight plate is provided at the bottom of the lower end of the protective net. A traction rope is provided in the middle of the counterweight plate and is wound around the winch through the guide wheel.
3. The anti-smog protection device for uphill coal mine faces according to claim 2, characterized in that: The mounting assembly includes a socket located on the side of the slider. A through shaft is inserted into the socket. The rotating cylinder is sleeved and rotates on the through shaft. A fixing ring is provided on the through shaft. Bolt holes are provided around the fixing ring and the socket. A limiting block is provided at the upper end of the slider and slides in the top groove. The top plate is connected to the limiting block.
4. The anti-smog protection device for uphill coal mine faces according to claim 3, characterized in that: The auxiliary fixing component includes a hoop plate that can be inserted between the limiting plates. The thickness of the hoop plate is equal to the distance between the limiting plates, and a tap is threaded into the hoop plate.
5. A protective device for preventing flying coal debris from an uphill coal mine face according to claim 4, characterized in that: The lower end of the top beam is provided with a spherical socket, and the end of the cylinder is adapted to the socket.
6. The anti-smog protection device for uphill coal mine faces according to claim 5, characterized in that: Both the limiting block and the top plate are provided with matching wire holes.
7. A protective device for preventing flying coal debris from an uphill coal mine face according to claim 6, characterized in that: When the through-shaft is inserted into the bottom of the insertion hole, the retaining ring fits precisely against the slider.