Roof-cutting pressure-relief automatic hole sealing equipment during end mining of coal mine
By designing automatic hole sealing equipment for cutting and pressure relief during coal mines, and using structures such as controllers and hydraulic cylinders to achieve automatic filling and compaction of gun mud, the problem of time-consuming and compactness of filling mud in the existing technology is solved, and efficient and safe gun mud filling effect is achieved.
Patent Information
- Application Number
- CN202510497733.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-21
- Publication Date
- 2025-06-13
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
In the prior art, during the blasting of deep holes in the cutting and unloading of pressure during the coal mine during the final mining, the process of filling mud bubbles takes a long time, the workers have a high labor intensity, and the density is difficult to ensure, which often leads to frequent punching and posing a major safety hazard.
An automatic hole sealing equipment for cutting and pressure relief during coal mine mining is designed. The controller controls structures such as the front and back motors and hydraulic cylinders to realize automatic filling and compaction of gun mud, ensuring the controllability and compactness of gun mud filling.
The automation and efficiency of gun mud filling is achieved, which reduces the labor intensity and filling time of workers, improves the compactness of filling, reduces the risk of punching, and ensures construction safety and quality.
Smart Images
Figure CN120141254A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of hole sealing, and specifically to an automatic hole sealing device for roof cutting and pressure relief during the final mining of coal mines. Background Art
[0002] During the coal mining production process using the gob-side entry retaining method in coal mines, due to the large roof pressure in the mining area, the roadway is prone to serious deformation. At this time, the deep-hole roof cutting and pressure relief blasting method is adopted, pre-splitting roof cutting blasting is carried out on the sub-key stratum in the advanced working face, or deep-hole blasting is carried out at other positions. The working process of each hole is to first drill the blast hole, clean the drill hole and make the stemming, then charge the explosive, and then tamp the stemming. The whole process requires more than five workers to cooperate with the blaster for construction. Due to the comprehensive influence of the advancing distance of the fully mechanized coal mining face and the roof blasting effect reaching the design value, the coal mining face needs to advance about four meters in a working day, and more than eight holes need to be blasted every day. More than ten ordinary workers are required to cooperate with the blaster for charging and blasting. To ensure the safety of deep-hole blasting and the timeliness of avoiding rework, after the blaster installs the blasting cartridge, ordinary workers need to cooperate with the blaster to tamp the stemming into the drill hole that has been charged with the cartridge. Among them, the most time-consuming process is the stage of tamping the stemming after charging, which occupies more than two-thirds of the total charging time.
[0003] The traditional method of tamping the stemming is as follows: Take the pre-made finished stemming. The diameter of the stemming is 15 - 25 mm smaller than the diameter of the drill hole. To ensure the compactness of the stemming tamping and no stemming ejection after blasting, only 400 mm lengths are taken for each section for tamping. The traditional manual tamping method of the stemming is used for repeated ramming. Usually, the tamping length of the stemming for deep-hole blasting is not less than one-third of the total hole depth. Therefore, the workload of tamping the stemming for deep-hole blasting is extremely large, and a large number of workers are required. Due to the high labor intensity, the compactness cannot be guaranteed during the repeated ramming process by workers, and frequent stemming ejection often occurs after blasting due to insufficiently compact stemming tamping, posing a great potential safety hazard. Summary of the Invention
[0004] The purpose of the present invention is to provide an automatic hole sealing device for roof cutting and pressure relief during the final mining of coal mines to solve the problems raised in the prior art.
[0005] To achieve the above object, the present invention provides the following technical solution: An automatic hole sealing device for roof cutting and pressure relief during the final mining of a coal mine, comprising a vehicle, a controller, and a first support plate. A second fixing frame is fixedly installed on the top of the first support plate. A positive and negative motor, a plain bearing, a fourth hydraulic cylinder, and a sixth hydraulic cylinder are fixedly installed on the second fixing frame. A fifth hydraulic cylinder is arranged on one side of the fourth hydraulic cylinder. The top of the first support plate is rotatably connected to a second support plate. A transmission shaft is fixedly installed between the output end of the positive and negative motor and the second support plate. A plurality of material support structures are installed on the second support plate. The piston end of the sixth hydraulic cylinder is fixedly installed with a sixth mounting frame. A third hydraulic cylinder and a U-shaped frame are arranged inside the sixth mounting frame. An electromagnet is arranged on one side of the U-shaped frame. A first hydraulic cylinder is arranged at the bottom of the plain bearing. The first hydraulic cylinder and the plurality of material support structures are all arranged on the same circular track. The piston end of the first hydraulic cylinder is fixedly installed with a second mounting frame. A tensiometer is fixedly installed at the bottom of the inner cavity of the second mounting frame. The measuring end of the tensiometer is fixedly installed with a transmission plate. A sliding shaft is fixedly installed at the bottom of the transmission plate. The bottom end of the sliding shaft extends to the outside of the second mounting frame and is fixedly installed with a pressing plate.
[0006] Preferably, the controller is fixedly installed on one side of the vehicle interior close to the first support plate. Two first fixing frames are fixedly installed at the bottom of the vehicle. Two bolts are threadedly connected between each of the two first fixing frames and the first support plate.
[0007] Preferably, the material support structure includes a feeding round hole opened on the top of the second support plate and a metal ring arranged at the bottom of the feeding round hole. Three sliding plates are fixedly installed on the metal ring. The top ends of the three sliding plates all penetrate through the second support plate and extend to the top of the second support plate. An arc-shaped frame is sleeved on the outside of the sliding plate. The arc-shaped frame is fixedly installed on the top of the second support plate.
[0008] Preferably, three third mounting frames are arranged on the outside of the feeding round hole. The three third mounting frames are fixedly embedded on the second support plate. Expansion members are fixedly installed inside each of the three third mounting frames. A flow dividing box is arranged at the top of the feeding round hole. A first guide pipe is fixedly inserted on each of the three third mounting frames. The two ends of the first guide pipe are respectively fixedly communicated with the flow dividing box and the inside of the expansion member.
[0009] Preferably, a second guide pipe is fixedly communicated with one side of the flow dividing box. One end of the second guide pipe is fixedly installed with a fourth mounting frame. A telescopic liquid storage member is fixedly installed on one side of the fourth mounting frame. One end of the telescopic liquid storage member is fixedly installed with a fifth mounting frame. A second hydraulic cylinder is fixedly installed on one side of the fifth mounting frame. The second hydraulic cylinder and the fourth mounting frame are both fixedly installed on the top of the second support plate. The fifth mounting frame is slidably installed on the top of the second support plate. A hydraulic sensor is fixedly installed on the top of the fourth mounting frame. The detection end of the hydraulic sensor extends into the second guide pipe.
[0010] Preferably, a brake is sleeved outside the transmission shaft, and two fixing brackets III are fixedly installed outside the brake, and the top end of the fixing bracket III is fixedly connected to the fixing bracket II.
[0011] Preferably, an installation bracket I is fixedly sleeved outside the hydraulic cylinder I, and two fixing brackets IV are fixedly installed between the installation bracket I and the bottom of the plain bearing. A plurality of telescopic rods I are fixedly inserted at the bottom end of the installation bracket I, and a ring is fixedly installed between the piston ends of the plurality of telescopic rods I. The ring is fixedly installed outside the installation bracket II, and a plurality of telescopic rods II are fixedly installed between the bottom of the transmission plate and the bottom of the inner cavity of the installation bracket II.
[0012] Preferably, an installation bracket VIII is fixedly installed outside the hydraulic cylinder V, and two telescopic rods IV are fixedly inserted on the fixing bracket II. The piston ends of the telescopic rods IV and the piston end of the hydraulic cylinder IV are both fixedly connected to the installation bracket VIII.
[0013] Preferably, an outer box is fixedly installed on one side of the fixing bracket II away from the hydraulic cylinder V. One ends of the telescopic rod IV and the hydraulic cylinder IV are both arranged inside the outer box. Two guiding vertical plates are slidably penetrated through the top of the installation bracket VIII. A pushing plate is fixedly installed at the bottom piston end of the hydraulic cylinder V, and the bottom end of the guiding vertical plate is fixedly connected to the pushing plate.
[0014] Preferably, the hydraulic cylinder VI is fixedly penetrated through the support plate I, the hydraulic cylinder III is fixedly installed inside the installation bracket VI, the installation bracket VI is arranged at the bottom of the support plate I, and two telescopic rods III are fixedly installed inside the installation bracket VI. The telescopic rods III and the piston end of the hydraulic cylinder III are both fixedly connected to the U-shaped frame. An installation bracket VII is fixedly installed on one side of the U-shaped frame, the electromagnet is fixedly installed inside the installation bracket VII, a transmission ring is fixedly installed outside the installation bracket I, and the U-shaped frame is arranged between the top of the transmission ring and the bottom of the support plate I.
[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In this application, during the hole sealing process of the automatic hole sealing device, the pressure applied to the stemming is digitized and displayed, and the thrust can be accurately applied to the stemming according to the preset data, ensuring the controllability, scientificity, and rigor of the stemming stuffing, ensuring the density of the stemming after stuffing, reducing the fatigue of workers caused by high-intensity work and the situation where the density of the stemming stuffing cannot meet the requirements of the blasting design, and ensuring the construction speed and construction quality.
[0016] 2. In this application, the controller controls the forward and reverse motor to rotate forward for a period of time, driving the second support plate to rotate clockwise by 30°, so that the first material support structure moves to the top of the drilling hole. Then, the controller controls the hydraulic cylinder three fixedly installed inside the sixth mounting frame to work. The working electromagnet contacts and adsorbs the iron metal ring through magnetic force to fix it. The controller controls the hydraulic cylinder six to work to push the sixth mounting frame downward, and the electromagnet drives the metal ring to move downward, so that the metal ring and the three sliding plates fixedly installed on the metal ring move downward. The metal ring moves downward and contacts the ground, ensuring that the gun clay enters the drilling hole. The controller controls the hydraulic cylinder two in the material support structure to contract first, and the bottom gun clay passes through the feeding round hole and falls to the bottom of the second support plate. The gun clay is guided into the drilling hole by the guiding frame. After the hydraulic cylinder two contracts for a period of time, it extends, and the three expansion parts expand and contact the outside of the second gun clay from the bottom upward. The position of the second gun clay from the bottom upward is fixed, completing the feeding and stuffing work of one gun clay. There is no need for staff to stuff the gun clay into the drilling hole one by one, improving the gun clay stuffing speed. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is a schematic structural diagram of the first support plate of the present invention; Figure 3 is Figure 2 an enlarged view of the structure at A of Figure 4 is a schematic structural diagram of the second fixing frame of the present invention; Figure 5 is a partial structural schematic diagram of the second mounting frame of the present invention; Figure 6 is a schematic structural diagram of the second mounting frame of the present invention; Figure 7 is a schematic structural diagram of the outer box of the present invention; Figure 8 is Figure 7 an enlarged view of the structure at B of Figure 9 is a schematic structural diagram of the eighth mounting frame of the present invention; Figure 10 is a partial structural schematic diagram of the sixth mounting frame of the present invention; Figure 11 is a schematic structural diagram of the second support plate of the present invention; Figure 12 is Figure 11 an enlarged view of the structure at C of Figure 13 is a schematic structural diagram of the flow dividing box of the present invention.
[0018] Reference numerals in the figure: 1, vehicle; 2, controller; 3, first fixing bracket; 4, bolt; 5, first support plate; 6, second fixing bracket; 7, reversible motor; 8, transmission shaft; 9, brake; 10, third fixing bracket; 11, second support plate; 12, plain bearing; 13, fourth fixing bracket; 14, first mounting bracket; 15, second mounting bracket; 16, ring; 17, first telescopic rod; 18, first hydraulic cylinder; 19, pressing plate; 20, transmission plate; 21, sliding shaft; 22, second telescopic rod; 23, tensiometer; 24, arc-shaped bracket; 25, sliding plate; 26, metal ring; 27, feeding round hole; 28, third mounting bracket; 29, expansion member; 30, first diversion pipe; 31, shunt box; 32, second diversion pipe; 33, fourth mounting bracket; 34, telescopic liquid storage member; 35, fifth mounting bracket; 36, second hydraulic cylinder; 37, hydraulic sensor; 38, sixth mounting bracket; 39, third telescopic rod; 40, third hydraulic cylinder; 41, U-shaped bracket; 42, seventh mounting bracket; 43, electromagnet; 44, outer box; 45, fourth telescopic rod; 46, fourth hydraulic cylinder; 47, eighth mounting bracket; 48, fifth hydraulic cylinder; 49, pushing plate; 50, guiding vertical plate; 51, transmission ring; 52, sixth hydraulic cylinder. Detailed implementation manners
[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0020] Embodiment: As Figures 1-13 shown, the present invention provides a technical solution for an automatic hole sealing device for roof cutting and pressure relief during the final mining of coal mines: Specifically, the controller 2 is fixedly installed inside the vehicle 1 on one side close to the first support plate 5. The controller 2 controls the automatic hole sealing device composed of the reversible motor 7, the second support plate 11, the fifth hydraulic cylinder 48, multiple material support structures, the sixth hydraulic cylinder 52, the third hydraulic cylinder 40, the tensiometer 23, etc. to work. Two first fixing brackets 3 are fixedly installed at the bottom of the vehicle 1. Two bolts 4 are threadedly connected between both of the first fixing brackets 3 and the first support plate 5. By rotating the bolts 4, the threaded fixation between the first support plate 5 and the first fixing brackets 3 can be removed, separating the automatic hole sealing device installed on the first support plate 5 from the vehicle 1. According to specific construction requirements and construction environments, the first support plate 5 is installed on different carriers to ensure the flexibility of the use of the automatic hole sealing device and adapt to complex coal mine construction environments.
[0021] Specifically, as Figure 2 , Figure 11 , Figure 12 and Figure 13As shown, the feeding circular hole 27 in the material support structure is opened at the top of the second support plate 11. A metal ring 26 is provided at the bottom of the feeding circular hole 27. The first hydraulic cylinder 18 and the feeding circular holes 27 in multiple material support structures are respectively on the same circular track, so that the feeding circular hole 27 and the first hydraulic cylinder 18 move along a preset track. Three sliding plates 25 are fixedly installed on the metal ring 26. The tops of the three sliding plates 25 all penetrate through the second support plate 11 and extend to the top of the second support plate 11. The integrated setting of the metal ring 26 and the three sliding plates 25 allows them to move synchronously. An arc-shaped frame 24 is sleeved outside the sliding plate 25. The arc-shaped frame 24 is fixedly installed on the top of the second support plate 11. Under the restriction of the arc-shaped frame 24, the metal ring 26 and the sliding plate 25 move along a preset track.
[0022] Three third mounting frames 28 are provided outside the feeding circular hole 27. The third mounting frames 28 are fixedly embedded in the second support plate 11 and cannot move. Expansion members 29 are fixedly installed inside the three third mounting frames 28. A flow splitting box 31 for flow splitting is provided at the top of the feeding circular hole 27. Three first guide pipes 30 are fixedly inserted on the three third mounting frames 28. The two ends of the first guide pipe 30 are respectively fixedly communicated with the inside of the flow splitting box 31 and the expansion member 29. The flow splitting box 31 is communicated with the inside of the three expansion members 29 through the three first guide pipes 30.
[0023] One end of a second guide pipe 32 fixedly communicated with one side of the flow splitting box 31 is fixedly installed with a fourth mounting frame 33. A telescopic liquid storage member 34 for storing liquid and capable of telescoping is fixedly installed on one side of the fourth mounting frame 33. One side of a fifth mounting frame 35 fixedly installed at one end of the telescopic liquid storage member 34 is fixedly installed with a second hydraulic cylinder 36. The second hydraulic cylinder 36 and the fourth mounting frame 33 are both fixedly installed on the top of the second support plate 11, and the relative positions between them and the second support plate 11 remain unchanged. The fifth mounting frame 35 is slidably installed on the top of the second support plate 11 and can only move in the telescoping direction of the telescopic liquid storage member 34. By controlling the operation of the second hydraulic cylinder 36, the second hydraulic cylinder 36 controls the position of the fifth mounting frame 35, thereby controlling the telescoping of the telescopic liquid storage member 34. The internal hydraulic pressure of the telescopic liquid storage member 34 changes. A hydraulic sensor 37 is fixedly installed on the top of the fourth mounting frame 33. The detection end of the hydraulic sensor 37 extends into the second guide pipe 32 to detect the internal hydraulic pressure of the second guide pipe 32 in real time.
[0024] Specifically, as Figure 2 and Figure 4 shown, a brake 9 is sleeved outside the transmission shaft 8. Two third fixing frames 10 are fixedly installed outside the brake 9. The tops of the third fixing frames 10 are fixedly connected to the second fixing frame 6. By controlling the operation of the brake 9, the transmission shaft 8 can be limited to prevent the transmission shaft 8 from getting out of control.
[0025] Specifically, as Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 andFigure 6 As shown, an installation frame one 14 is fixedly sleeved outside the hydraulic cylinder one 18. Two fixing frames four 13 are fixedly installed between the bottom of the installation frame one 14 and the bottom of the plain bearing 12. The installation frame one 14 penetrates through the support plate two 11 and is fixedly connected to the support plate two 11. And the central axis of the support plate two 11, the central axis of the transmission shaft 8, and the central axis of the plain bearing 12 are located on the same straight line. Therefore, during the rotation of the support plate two 11, multiple material support structures installed on the hydraulic cylinder one 18 and the support plate two 11 rotate, and the positions of the hydraulic cylinder one 18 and the material support structure can be interchanged.
[0026] A plurality of telescopic rods one 17 are fixedly inserted at the bottom end of the installation frame one 14. A ring 16 fixedly installed between the plurality of telescopic rods one 17 is fixedly installed on the outside of the installation frame two 15. The telescopic telescopic rods one 17 support and limit the movement of the installation frame two 15, ensuring that the installation frame two 15 moves along a preset track, ensuring the horizontal movement of the installation frame two 15, and avoiding the installation frame two 15 from hitting and rubbing against the side wall of the drilling hole. A plurality of telescopic rods two 22 are fixedly installed between the bottom of the transmission plate 20 and the bottom of the inner cavity of the installation frame two 15. The telescopic telescopic rods two 22 support and limit the transmission plate 20, enabling the transmission plate 20 to move horizontally relative to the tensiometer 23, ensuring that the transmission plate 20 exerts a vertical pulling force on the tensiometer 23, and ensuring the accuracy of the pulling force value detected by the tensiometer 23.
[0027] Specifically, as Figure 7 、 Figure 8 and Figure 9 shown, an installation frame eight 47 is fixedly installed outside the hydraulic cylinder five 48. The installation frame eight 47 provides a certain protection for the hydraulic cylinder five 48. And two telescopic rods four 45 are fixedly inserted on the fixing frame two 6. The piston ends of the two telescopic rods four 45 and the piston end of the hydraulic cylinder four 46 are both fixedly connected to the installation frame eight 47. The two telescopic rods four 45 support and guide the movement of the installation frame eight 47. By controlling the operation of the hydraulic cylinder four 46, the positions of the installation frame eight 47 and the hydraulic cylinder five 48 can be controlled.
[0028] An outer box 44 is fixedly installed on one side of the fixing frame two 6 away from the hydraulic cylinder five 48. One ends of the telescopic rods four 45 and the hydraulic cylinder four 46 are both arranged inside the outer box 44. The outer box 44 protects the telescopic rods four 45 and the hydraulic cylinder four 46, reducing the possibility of damage to the outer box 44 and the telescopic rods four 45. Two guiding vertical plates 50 are slidably penetrated through the top of the installation frame eight 47. A pushing plate 49 is fixedly installed at the bottom piston end of the hydraulic cylinder five 48. The bottom ends of the guiding vertical plates 50 that can only move up and down are fixedly connected to the pushing plate 49. The movement of the pushing plate 49 is limited by the two guiding vertical plates 50, ensuring the stability of the operation of the pushing plate 49.
[0029] Specifically, as Figure 7 and Figure 10As shown, the sixth hydraulic cylinder 52 is fixedly inserted through the first support plate 5. The piston end at the bottom of the sixth hydraulic cylinder 52 is arranged at the bottom of the first support plate 5. The mounting bracket six 38 fixedly installed at the piston end of the sixth hydraulic cylinder 52 is arranged at the bottom of the first support plate 5. The third hydraulic cylinder 40 is fixedly installed inside the mounting bracket six 38. The piston ends of the two telescopic rods three 39 fixedly installed inside the mounting bracket six 38 and the piston end of the third hydraulic cylinder 40 are all fixedly connected to the U-shaped bracket 41. A mounting bracket seven 42 is fixedly installed on one side of the U-shaped bracket 41. The electromagnet 43 is fixedly installed inside the mounting bracket seven 42. By controlling the operation of the third hydraulic cylinder 40, the positions of the U-shaped bracket 41 and the electromagnet 43 can be controlled, so that the U-shaped bracket 41 moves to the top of the transmission ring 51 fixedly sleeved outside the first mounting bracket 14, sharing the force exerted by the first mounting bracket 14 on the second support plate 11, avoiding the deformation of the second support plate 11 and ensuring the accurate positioning of the pressing plate 19 and the metal ring 26.
[0030] The working process of the automatic hole sealing equipment provided by this application is as follows: After a large amount of prefabricated stemming in accordance with unified specifications is placed in the cargo box of the vehicle 1, the staff in the cab of the vehicle 1 drives the vehicle 1 to a preset position, aligning the pressing plate 19 with the drilled hole after filling with explosives. During this process, the second hydraulic cylinder 36 in multiple material support structures is controlled to work by the controller 2. The second hydraulic cylinder 36 pushes the mounting bracket five 35 to move and push the telescopic liquid storage member 34. The telescopic liquid storage member 34 contracts, and the liquid inside the telescopic liquid storage member 34 enters the inside of the flow distribution box 31 through the second diversion pipe 32. The hydraulic pressure inside the flow distribution box 31 rises, and the three expansion members 29 connected by the three first diversion pipes 30 in the flow distribution box 31 expand. The hydraulic pressure sensor 37 detects the hydraulic pressure inside the second diversion pipe 32 and feeds back the detection result to the controller 2. When the expansion members 29 expand to a preset shape and enter a certain distance inside the feeding round hole 27, the hydraulic pressure value inside the second diversion pipe 32 reaches the preset value. The controller 2 receiving the feedback from the hydraulic pressure sensor 37 controls the second hydraulic cylinder 36 to pause working. Under the influence of the three expansion members 29, the stemming cannot pass through the inside of the feeding round hole 27 at this time, and multiple material support structures are all in a closed state; The staff inside the cargo box of the vehicle 1 controls the forward and reverse motor 7 to rotate forward through the controller 2. The forward and reverse motor 7 drives the second support plate 11 to rotate through the transmission shaft 8, rotating one material support structure in front of the staff. The staff places the stemming into the material space formed by the three arc-shaped frames 24 in the material support structure. After placing four stemmings into one material space, the forward and reverse motor 7 is controlled to work again through the controller 2, rotating the next material support structure in front of the staff, and continuing the above-mentioned stemming placement work, placing the stemming in multiple material support structures; Then, the forward and reverse motor 7 is controlled to rotate in reverse through the controller 2, controlling the second support plate 11 to rotate, so that the first mounting bracket 14 and the pressing plate 19 return to the top of the drilled hole, and the hole sealing preparation work can be completed.
[0031] Subsequently, the controller 2 controls the automatic hole-sealing device to work according to the numerically controlled program stored internally, and the working process is as follows: First, the controller 2 controls the forward and reverse motor 7 to rotate forward for a period of time. The forward and reverse motor 7 drives the second support plate 11 to rotate clockwise by a certain angle through the transmission shaft 8. In this application, there are five material support structures and a first mounting frame 14. Therefore, the forward and reverse motor 7 drives the second support plate 11 to rotate clockwise by 30° this time, so that the first material support structure moves to the top of the drill hole. Subsequently, the hydraulic cylinder three 40 fixedly installed inside the sixth mounting frame 38 is controlled to work. The hydraulic cylinder three 40 pushes the U-shaped frame 41 to move, and the electromagnet 43 moves to contact the metal ring 26 in the material support structure. The working electromagnet 43 contacts and adsorbs and fixes the iron metal ring 26 through magnetic force.
[0032] Subsequently, the controller 2 controls the hydraulic cylinder six 52 to work to push the sixth mounting frame 38 downward. The sixth mounting frame 38 drives the U-shaped frame 41 to move downward. The seventh mounting frame 42 fixed to the U-shaped frame 41 and the electromagnet 43 fixedly installed inside the seventh mounting frame 42 move downward. The electromagnet 43 drives the metal ring 26 to move downward, so that the metal ring 26 and the three sliding plates 25 fixedly installed on the metal ring 26 move downward. The metal ring 26 moves downward to contact the ground. At this time, the guiding frame composed of the three arc-shaped frames 24, the three sliding plates 25 and the metal ring 26 is in an extended state. Subsequently, the hydraulic cylinder two 36 in the material support structure is controlled to contract first, and the three expansion members 29 contract. The bottom mud passes through the feeding round hole 27 and falls to the bottom of the second support plate 11. The mud is guided into the drill hole by the guiding frame; and after the hydraulic cylinder two 36 contracts for a period of time, it extends, and the fifth mounting frame 35 moves to squeeze the telescopic liquid storage member 34. The hydraulic pressure in the second diversion pipe 32, the diversion box 31 and the three expansion members 29 rises, and the three expansion members 29 expand to contact the outside of the second mud from the bottom upward. The position of the second mud from the bottom upward is fixed, and the feeding and stuffing work of one mud is completed. It is not necessary for the staff to stuff the mud into the drill hole one by one, which improves the mud stuffing speed.
[0033] After the feeding and stuffing work of one mud is completed, the controller 2 controls the hydraulic cylinder six 52 to contract, the sixth mounting frame 38 moves upward to reset, and the metal ring 26 moves upward to reset. Subsequently, the electromagnet 43 stops working. The hydraulic cylinder three 40 contracts to drive the U-shaped frame 41 back into the sixth mounting frame 38. The metal ring 26 moves without limitation, and there is an interference fit between the sliding plate 25 and the arc-shaped frame 24. Before the metal ring 26 is not subjected to a certain up and down movement force, the metal ring 26 will not move up and down.
[0034] Subsequently, the controller 2 controls the forward and reverse motor 7 to reverse for a period of time, driving the second support plate 11 to rotate counterclockwise by 30°, and the pressing plate 19 moves to the top of the drill hole; then the controller 2 controls the brake 9 to work to limit the transmission shaft 8, and the transmission shaft 8 and the second support plate 11 cannot move; After the brake 9 finishes working, the controller 2 controls the first hydraulic cylinder 18 to work and extend. The first hydraulic cylinder 18 pushes the second mounting bracket 15 downward, and the pressing plate 19 pushes the clay slug downward. When the clay slug is blocked from moving downward in the drill hole, as the first hydraulic cylinder 18 works, the thrust applied by the pressing plate 19 to the clay slug increases. The pressing plate 19 is fixedly installed with a transmission plate 20 through a sliding shaft 21. The thrust applied by the pressing plate 19 to the clay slug is synchronously converted into the tension applied by the transmission plate 20 to the tensiometer 23. The tensiometer 23 detects the tension applied by the transmission plate 20, and thus the thrust received by the clay slug can be detected. The tension value detected by the tensiometer 23 is fed back to the controller 2. When the tension value detected by the tensiometer 23 reaches the preset value, the controller 2 makes the first hydraulic cylinder 18 contract a certain distance, so that the pressing plate 19 disengages from the contact with the clay slug; subsequently, the first hydraulic cylinder 18 works and extends again, so that the pressing plate 19 presses on the clay slug. When the tension value detected by the tensiometer 23 reaches the preset value, the controller 2 controls the first hydraulic cylinder 18 to contract, so that the pressing plate 19 disengages from the contact with the clay slug, completing one re-pressing operation; after the structures such as the controller 2, the tensiometer 23, and the first hydraulic cylinder 18 complete multiple re-pressing operations, the controller 2 controls the first hydraulic cylinder 18 to contract and drive the pressing plate 19 to move upward and leave the inside of the drill hole, and thus the stuffing work of one clay slug can be completed. In summary, during the hole-sealing process of the automatic hole-sealing device in this application, the pressure applied to the clay slug is digitized and displayed, and the thrust can be accurately applied to the clay slug according to the preset data, ensuring the controllability, scientificity, and rigor of the clay slug stuffing, ensuring the density of the clay slug after stuffing, reducing the fatigue of workers caused by high-intensity work and the situation where the density of the clay slug stuffing cannot meet the requirements of the blasting design, and ensuring the construction speed and construction quality.
[0035] The automatic hole-sealing device stuffs and compacts multiple clay slugs into the drill hole according to the above working method; when the forward and reverse motor 7 drives the second support plate 11 to rotate clockwise by 30°, it can move to the top of the drill hole. After the clay slug in the material support structure is put in place, similarly, when performing the stuffing work of the clay slug again, the forward and reverse motor 7 drives the second support plate 11 to rotate clockwise by 60° and then counterclockwise by 60°, and the clay slug in the second material support structure is put into the drill hole; the controller 2 can put the clay slugs in multiple material support structures into the drill hole according to the preset program, reducing the labor cost input required for clay slug placement.
[0036] Additionally, after the first hydraulic cylinder 18 works to push the pressing plate 19 to move into the blast hole, the controller 2 controls the third hydraulic cylinder 40 to work, so that the U-shaped frame 41 moves to the top of the transmission ring 51 to share the force applied by the first hydraulic cylinder 18 to the second support plate 11, avoiding deformation of the second support plate 11.
[0037] Additionally, when the drill hole is not perpendicular to the horizontal plane, after the first support plate 5 is set to one side of the drill hole through a carrier vehicle, only one mud plug is placed in each material support structure. When the material support structure moves to the top of the drill hole and the guide frame composed of three arc-shaped frames 24, three sliding plates 25 and the metal ring 26 is in the extended state, first control the fourth hydraulic cylinder 46 to work. The fourth hydraulic cylinder 46 pushes the eighth mounting frame 47 to move to the top of the material support structure, control the fifth hydraulic cylinder 48 to work to push the pushing plate 49 to move into the material support structure, and push the mud plug into the drill hole, ensuring that when the drill hole is inclined, the automatic hole sealing device can still stably fill the mud plug into the blast hole; then control the forward and reverse motor 7 to work to make the pressing plate 19 move to the top of the blast hole, and control the first hydraulic cylinder 18 to perform the mud plug filling work. During this process, the staff places the mud plug into the empty material support structure to ensure the continuity of mud plug filling.
[0038] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.
Claims
1. A coal mine top cutting and pressure relief automatic hole sealing device at the end of mining, comprising a vehicle (1), a controller (2) and a support plate (5), characterized in that: A fixing frame 2 (6) is fixedly mounted on the top of the support plate 1 (5), and a forward and reverse motor (7), a plane bearing (12), a hydraulic cylinder 4 (46) and a hydraulic cylinder 6 (52) are fixedly mounted on the fixing frame 2 (6). A hydraulic cylinder 5 (48) is arranged on one side of the hydraulic cylinder 4 (46). The top of the support plate 1 (5) is rotatably connected to the support plate 2 (11), and a transmission shaft (8) is fixedly mounted between the output end of the forward and reverse motor (7) and the support plate 2 (11). A plurality of material support structures are mounted on the support plate 2 (11). A mounting frame 6 (38) is fixedly mounted on the piston end of the hydraulic cylinder 6 (52), and a hydraulic cylinder 3 (48) is arranged inside the mounting frame 6 (38). 0) and a U-shaped frame (41), an electromagnet (43) is arranged on one side of the U-shaped frame (41), a hydraulic cylinder (18) is arranged at the bottom of the plane bearing (12), the hydraulic cylinder (18) and the plurality of material support structures are arranged on the same circular track, the piston end of the hydraulic cylinder (18) is fixedly mounted with a mounting frame (15), the bottom of the inner cavity of the mounting frame (15) is fixedly mounted with a tension gauge (23), the measuring end of the tension gauge (23) is fixedly mounted with a transmission plate (20), the bottom of the transmission plate (20) is fixedly mounted with a sliding shaft (21), the bottom end of the sliding shaft (21) extends to the outside of the mounting frame (15) and is fixedly mounted with a pressure plate (19).
2. The automatic hole sealing device for top cutting and pressure relief at the end of coal mining according to claim 1 is characterized in that: The controller (2) is fixedly installed on one side of the vehicle (1) near the support plate (5), and two fixing frames (3) are fixedly installed on the bottom of the vehicle (1). The two fixing frames (3) are threadedly connected to the support plate (5) by two bolts (4).
3. The automatic sealing device for top cutting and pressure relief at the end of coal mining according to claim 1 is characterized by: The material support structure comprises a feeding circular hole (27) opened at the top of the second support plate (11) and a metal ring (26) arranged at the bottom of the feeding circular hole (27); three sliding plates (25) are fixedly mounted on the metal ring (26); the top ends of the three sliding plates (25) all pass through the second support plate (11) and extend to the top of the second support plate (11); an arc frame (24) is sleeved on the outer side of the sliding plate (25); and the arc frame (24) is fixedly mounted on the top of the second support plate (11).
4. The automatic sealing device for top cutting and pressure relief at the end of coal mining according to claim 3 is characterized in that: Three mounting frames (28) are arranged outside the feeding circular hole (27), and the mounting frames (28) are fixedly embedded in the supporting plate (11). The three mounting frames (28) are each fixedly installed with an expansion piece (29) inside. A diversion box (31) is arranged on the top of the feeding circular hole (27), and a guide pipe (30) is fixedly inserted on the three mounting frames (28). The two ends of the guide pipe (30) are respectively fixedly connected to the diversion box (31) and the inside of the expansion piece (29).
5. The automatic sealing device for top cutting and pressure relief at the end of coal mining according to claim 4 is characterized in that: One side of the flow diversion box (31) is fixedly connected to a flow guide pipe 2 (32); one end of the flow guide pipe 2 (32) is fixedly mounted with a mounting frame 4 (33); one side of the mounting frame 4 (33) is fixedly mounted with a telescopic liquid storage member (34); one end of the telescopic liquid storage member (34) is fixedly mounted with a mounting frame 5 (35); one side of the mounting frame 5 (35) is fixedly mounted with a hydraulic cylinder 2 (36); both the hydraulic cylinder 2 (36) and the mounting frame 4 (33) are fixedly mounted on the top of the support plate 2 (11); the mounting frame 5 (35) is slidably mounted on the top of the support plate 2 (11); a hydraulic sensor (37) is fixedly mounted on the top of the mounting frame 4 (33); a detection end of the hydraulic sensor (37) extends into the interior of the flow guide pipe 2 (32).
6. The automatic sealing device for top cutting and pressure relief at the end of coal mining according to claim 1 is characterized by: The transmission shaft (8) is sleeved with a brake (9) on the outside, and two fixing frames (10) are fixedly mounted on the outside of the brake (9), and the top of the fixing frame (10) is fixedly connected to the fixing frame (6).
7. The automatic hole sealing device for top cutting and pressure relief at the end of coal mining according to claim 1 is characterized by: A mounting frame 1 (14) is fixedly sleeved on the outer side of the hydraulic cylinder 1 (18); two fixing frames 4 (13) are fixedly installed between the mounting frame 1 (14) and the bottom of the plane bearing (12); a plurality of telescopic rods 1 (17) are fixedly inserted at the bottom of the mounting frame 1 (14); a circular ring (16) is fixedly installed between the piston ends of the plurality of telescopic rods 1 (17); the circular ring (16) is fixedly installed on the outer side of the mounting frame 2 (15); and a plurality of telescopic rods 2 (22) are fixedly installed between the bottom of the transmission plate (20) and the bottom of the inner cavity of the mounting frame 2 (15).
8. The automatic sealing device for top cutting and pressure relief at the end of coal mining according to claim 1 is characterized by: A mounting frame eight (47) is fixedly mounted on the outer side of the hydraulic cylinder five (48), and two telescopic rods four (45) are fixedly inserted on the fixing frame two (6), and the piston ends of the telescopic rods four (45) and the piston ends of the hydraulic cylinder four (46) are both fixedly connected to the mounting frame eight (47).
9. The automatic sealing device for top cutting and pressure relief at the end of coal mining according to claim 8 is characterized in that: An outer box (44) is fixedly installed on the side of the fixing frame 2 (6) away from the hydraulic cylinder 5 (48), and one end of the telescopic rod 4 (45) and the hydraulic cylinder 4 (46) are both arranged inside the outer box (44). Two guide vertical plates (50) are slidably penetrated through the top of the mounting frame 8 (47), and a push plate (49) is fixedly installed on the bottom piston end of the hydraulic cylinder 5 (48), and the bottom end of the guide vertical plate (50) is fixedly connected to the push plate (49).
10. The automatic sealing device for top cutting and pressure relief at the end of coal mining according to claim 7, characterized in that: The hydraulic cylinder six (52) is fixedly installed on the support plate one (5), the hydraulic cylinder three (40) is fixedly installed inside the mounting frame six (38), the mounting frame six (38) is arranged at the bottom of the support plate one (5), two telescopic rods three (39) are fixedly installed inside the mounting frame six (38), the piston ends of the telescopic rods three (39) and the hydraulic cylinder three (40) are fixedly connected to the U-shaped frame (41), a mounting frame seven (42) is fixedly installed on one side of the U-shaped frame (41), the electromagnet (43) is fixedly installed inside the mounting frame seven (42), and a transmission ring (51) is fixedly installed on the outer side of the mounting frame one (14), and the U-shaped frame (41) is arranged between the top of the transmission ring (51) and the bottom of the support plate one (5).