Rapid isolation device for filling paste behind fully mechanized coal mining face frame

Abstract

The invention discloses a coal mine fully mechanized coal mining face rear-frame paste filling rapid isolation device, and relates to the technical field of paste filling, the coal mine fully mechanized coal mining face rear-frame paste filling rapid isolation device comprises a first sleeve plate and a second sleeve plate, a tail beam connecting plate is slidably installed in the first sleeve plate, one end of the tail beam connecting plate is fixedly connected with a rear tail beam, and the upper surface of the rear tail beam is in contact connection with the surface of a mine pit; a rubber strip is fixedly arranged on one side of the hanging cloth, the middle of the push rod is fixedly connected with an air cylinder, and the two sides of the air cylinder are each fixedly connected with one end of a fixing rod. The hanging cloth with the rubber strips is adopted, the rubber strips on the hanging cloth are customized to be in the shape the same as the outline of the rear tail beam, the gap between the hanging cloth and the rear tail beam is reduced, the sealing performance of the hanging cloth is improved, a series of linkage mechanisms are adopted, the position of the main supporting plate is changed while the rear tail beam moves, and therefore the hanging cloth is more convenient to use. And when the rear tail beam moves towards different directions, the arrangement time is greatly shortened, the time consumption is relatively short, and the working speed is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of paste filling, in particular to a paste filling rapid isolation device behind a fully mechanized mining working face frame in a coal mine. Background Art

[0002] As the main energy source in my country, coal is vital to the development of the national economy. It is not only a guarantee of energy security, but also an important raw material for industrial production. However, it is an indisputable fact that coal mining will cause ground subsidence and ecological environmental damage. Backfill mining is an effective way to prevent surface subsidence from the source, obtain coal resources with minimal ecological disturbance, and limit the impact on the ecological environment, water and soil resources, and infrastructure to the controllable range of the ecological environment's tolerance for mining behavior, thereby promoting the coordinated and integrated development of coal mining and the ecological environment.

[0003] Paste filling mining technology is one of the important methods of filling mining. The working face paste filling mining technology is to process the coal gangue generated in the coal mine production process, fly ash generated by the power plant, industrial slag and other solid wastes into slurry filling materials, pressurize them through a special filling pump, and use a filling pipe to transport the filling materials to the underground working face. At present, during coal mining, the mine cave will gradually extend forward, and the mined mine cave part will be filled with paste filling, and the hanging cloth will be used for isolation to isolate the filled area and the coal mine collection area to prevent the paste from flowing into the coal mine collection area, causing the working environment to be humid and the machine to be damaged. In addition, when the traditional mine cave support structure uses the rear tail beam, the sealing of the rear tail beam is poor, and the paste is easy to flow into the coal mine collection area. Secondly, the traditional hanging cloth isolation device has a slow layout speed, a long time consumption, and a slow working rate.

[0004] Therefore, in response to the above problems, the following solutions are proposed. Summary of the invention

[0005] The purpose of the present invention is to provide a paste filling rapid isolation device behind the fully mechanized mining working face in a coal mine, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a rapid isolation device for paste filling behind a fully mechanized mining working face frame in a coal mine, comprising a first set of plates, a second set of plates, a tail beam connecting plate, and a supporting mechanism. The tail beam connecting plate is slidably installed in the first set of plates, one end of the tail beam connecting plate is fixedly connected to the rear tail beam, the upper surface of the rear tail beam is in contact with the surface of the mine pit, the side and lower surfaces of the rear tail beam are in contact with the hanging cloth, a rubber strip is fixedly arranged on one side of the hanging cloth, the lower end of the tail beam connecting plate is fixedly connected to one end of the first top plate, the first top plate is "L"-shaped, the other end of the first top plate is in contact with the surface of the upper supporting plate in the supporting mechanism, one end of the tail beam connecting plate is fixedly connected to one end of the pushing rod, the pushing rod extends into the second set of plates and is fixedly connected to the supporting plate moving rod in the supporting mechanism, the supporting plate moving rod is slidably installed in the second set of plates, the second set of plates is arranged below the first set of plates, the middle part of the pushing rod is fixedly connected to the cylinder, one end of a fixing rod is fixedly connected to each of the two sides of the cylinder, and the other ends of the two fixing rods are respectively fixedly connected to the first set of plates and the second set of plates.

[0007] Preferably, the supporting mechanism includes: a support plate moving rod, a first gear, and a main supporting plate. The first gear is rotatably installed on the side of the support plate moving rod, the first gear is meshed with the first rack, the first rack is fixedly arranged in the second set plate, the center of one side of the first gear is fixedly connected to one end of the first connecting rod, and the other end of the first connecting rod is fixedly connected to the first bevel gear, the first bevel gear is arranged in the support plate moving rod, the first bevel gear is meshed with the second bevel gear, the second bevel gear is rotatably arranged in the support plate moving rod, the center of one side of the second bevel gear is fixedly connected to one end of the second connecting rod, and the other end of the second connecting rod The end is fixedly connected to the second gear, the second gear is rotatably arranged in the main support plate, the middle of the main support plate is fixedly connected to one end of the support plate moving rod, slide rails are arranged at the upper and lower ends of the main support plate, the second gear is meshed and connected to the second rack and the third rack on both sides, the second rack and the third rack are slidably installed in the main support plate, one end of the second rack is fixedly connected to one end of the third connecting rod, the other end of the third connecting rod is fixedly connected to the lower end of the upper support plate, the upper support plate is slidably installed in the main support plate, one end of the third rack is fixedly connected to one end of the fourth connecting rod, and the other end of the fourth connecting rod is fixedly connected to one end of the lower support plate;

[0008] The upper support plate is fixedly connected to the lower end of the main fixing frame, the upper surface of the main fixing frame is in contact with and connected to the rubber strip in the hanging cloth, two trapezoidal top blocks are slidably installed in the main fixing frame, the lower end of each trapezoidal top block is fixedly connected to one end of two first springs, the other end of the first spring is fixedly connected to the inner surface of the main fixing frame, the first spring is sleeved on the outer surface of the first shock absorber, one end of the first shock absorber is fixedly connected to the lower surface of the trapezoidal top block, and the other end is fixedly connected to the inner surface of the main fixing frame, one side of the trapezoidal top block extends out of the main fixing frame, the main fixing frame is provided with a notch corresponding to the notch, and the trapezoidal top block extends out of the main fixing frame side and is in contact with and connected to the rubber strip in the hanging cloth;

[0009] The side surfaces of the two trapezoidal top blocks are respectively in contact with and connected to the side surfaces of a moving block, and the moving block is slidably installed in the main fixed frame, and the moving block is fixedly connected to one end of a second spring away from the end of the trapezoidal top block, and the other end of the second spring is fixedly connected to the inner side surface of the main fixed frame, and the second spring is sleeved on the outer surface of the second shock absorber, and one end of the second shock absorber is fixedly connected to the main fixed frame, and the other end is fixedly connected to the moving block, and the side surface of the moving block is fixedly connected to one end of a toggle rod, and the toggle rod extends out of the main fixed frame and is in contact with and connected to the side surface of a reset plate inside the slide rail, and the reset plate is fixedly arranged in the slide rail, and the upper end of the reset plate is inclined, and the upper end of the moving block is fixedly connected to the upper fixed frame, and the inner surface of the upper fixed frame is in contact with and connected to the rubber strip in the hanging cloth;

[0010] Preferably, the lower support plate is fixedly connected to the lower fixing frame at the end away from the main support plate, and the lower fixing frame is in contact with and connected to the lower end of the hanging cloth.

[0011] Preferably, baffles are fixedly provided at both ends of the main fixing frame, one side of the baffle is fixedly connected to one end of the first telescopic rod, and the other end of the first telescopic rod is fixedly connected to the side surface of the upper fixing frame.

[0012] Preferably, the lower end of the support plate moving rod is fixedly connected to one end of the second top plate, and the other end of the second top plate is in contact and connected with the side surface of the lower support plate.

[0013] Preferably, the main support plate, the upper support plate and the lower support plate are moved away from the support plate so that the rod surface is in contact with the hanging cloth.

[0014] Preferably, the rubber strips on the hanging cloth are arranged at equal distances to form a concave shape with the same width as the rear tail beam.

[0015] Preferably, the cross section of the upper fixing frame is "L"-shaped.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention adopts a hanging cloth with a rubber strip. The rubber strip on the hanging cloth is customized into the same shape as the contour of the rear tail beam. The hanging cloth is fixed to the upper surface of the mine hole and the side of the rear tail beam through a supporting mechanism, which greatly reduces the gap between the hanging cloth and the rear tail beam, improves the sealing of the hanging cloth, prevents the paste from flowing into the coal mining area through the gap between the rear tail beam and the hanging cloth, and effectively ensures the dryness of the working environment in the coal mining area.

[0018] 2. The present invention adopts a series of linkage mechanisms. When the rear tail beam moves, the main support plate also changes position. When the rear tail beam moves in different directions, the upper support plate and the lower support plate in the main support plate are extended or retracted at the same time, and the arrangement time is greatly reduced, the time consumption is shorter, and the working speed is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the supporting state structure of the present invention;

[0021] Figure 3 It is a schematic diagram of the main structure of the support mechanism of the present invention;

[0022] Figure 4 It is a schematic diagram of the connection position structure of the upper fixing frame of the present invention;

[0023] Figure 5 It is a schematic diagram of the structure of the upper fixing frame and the rubber strip of the present invention;

[0024] Figure 6 It is a schematic diagram of the internal structure of the main fixing frame of the present invention;

[0025] Figure 7 It is a schematic diagram of the working position of the upper fixing frame, the rubber strip and the rear tail beam of the present invention;

[0026] Figure 8 It is a schematic diagram of the position structure of the slide rail and the toggle lever of the present invention;

[0027] Fig. 9 It is a schematic diagram of the position structure of the upper fixing frame and the rubber strip of the present invention;

[0028] Fig.10 It is a schematic diagram of the working of multiple supporting mechanisms of the present invention.

[0029] In the figure: 1, first set of plates, 2, second set of plates, 3, tail beam connecting plate, 301, rear tail beam, 302, first top plate, 4, push rod, 401, cylinder, 402, fixed rod, 5, support mechanism, 501, support plate moving rod, 502, first gear, 503, first rack, 504, first connecting rod, 505, first bevel gear, 506, second bevel gear, 507, second connecting rod, 508, second gear, 509, main support plate, 5091, slide rail, 510, second rack, 511 , the third rack, 512, the third connecting rod, 513, the upper support plate, 514, the fourth connecting rod, 515, the lower support plate, 516, the second top plate, 6, the main fixed frame, 601, the trapezoidal top block, 602, the first spring, 603, the first shock absorber, 604, the moving block, 605, the second spring, 606, the second shock absorber, 607, the toggle rod, 608, the reset plate, 609, the upper fixed frame, 610, the baffle, 611, the first telescopic rod, 7, the lower fixed frame, 8, the hanging cloth, 801, the rubber strip. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figure 1-10 , the present invention provides a technical solution:

[0032] In order to improve the sealing ability of the device, a rapid isolation device for paste filling behind a fully mechanized working face frame in a coal mine is proposed, comprising a first set of plates 1, a second set of plates 2, a tail beam connecting plate 3, and a supporting mechanism 5. The first set of plates 1 is fixedly installed at the end of a front support, and the front support supports the top of the mine cave on one side of a hanging cloth 8. The steel plate thickness of the first set of plates 1 is relatively thick, and its supporting force is relatively strong. The tail beam connecting plate 3 is slidably installed in the first set of plates 1, and one end of the tail beam connecting plate 3 is fixedly connected to a rear tail beam 301, and the upper surface of the rear tail beam 301 is in contact with the surface of the mine pit, and the rear tail beam 301 supports the top of the mine cave on the other side of the hanging cloth 8, and the side and lower surfaces of the rear tail beam 301 are in contact with the hanging cloth 8. A rubber strip 801 is fixedly arranged on one side of the hanging cloth 8, and the rubber strips 801 on the hanging cloth 8 are equidistantly arranged to form a concave shape corresponding to the rear tail beam 301.

[0033] The lower end of the tail beam connecting plate 3 is fixedly connected to one end of the first top plate 302, and the first top plate 302 is "L" shaped. The other end of the first top plate 302 is in contact with the surface of the upper support plate 513 in the support mechanism 5. One end of the tail beam connecting plate 3 is fixedly connected to one end of the push rod 4. The push rod 4 extends into the second set of plates 2 and is fixedly connected to the support plate moving rod 501 in the support mechanism 5. The support plate moving rod 501 is slidably installed in the second set of plates 2. The second set of plates 2 is arranged below the first set of plates 1. The middle part of the push rod 4 is fixedly connected to the cylinder 401, and one end of a fixed rod 402 is fixedly connected to each side of the cylinder 401. The other ends of the two fixed rods 402 are respectively fixedly connected to the first set of plates 1 and the second set of plates 2.

[0034] The cylinder 401 provides energy for the movement of the push rod 4, thereby realizing the movement of the push rod 4. The movement of the push rod 4 will drive the upper tail beam connecting plate 3 to slide in the first set of plates 1, and at the same time drive the support plate moving rod 501 to slide in the second set of plates 2.

[0035] The supporting mechanism 5 includes: a support plate moving rod 501, a first gear 502, and a main supporting plate 509. The first gear 502 is rotatably installed on the side of the support plate moving rod 501. The first gear 502 is meshed and connected with the first rack 503. The first rack 503 is fixedly arranged in the second set plate 2. The center of one side of the first gear 502 is fixedly connected to one end of the first connecting rod 504. The other end of the first connecting rod 504 is fixedly connected to the first bevel gear 505. The first bevel gear 505 is arranged in the support plate moving rod 501. The first bevel gear 505 is meshed and connected with the second bevel gear 506. The second bevel gear 506 is rotatably arranged in the support plate moving rod 501. The center of one side of the second bevel gear 506 is fixedly connected to one end of the second connecting rod 507. The other end of the second connecting rod 507 is fixedly connected The second gear 508 is connected, and the second gear 508 is rotatably arranged in the main support plate 509. The middle part of the main support plate 509 is fixedly connected to one end of the support plate moving rod 501. Slide rails 5091 are arranged at the upper and lower ends of the main support plate 509. The second gear 508 is meshed and connected with the second rack 510 and the third rack 511 on both sides. The second rack 510 and the third rack 511 are slidably installed in the main support plate 509. One end of the second rack 510 is fixedly connected to one end of the third connecting rod 512, and the other end of the third connecting rod 512 is fixedly connected to the lower end of the upper support plate 513. The upper support plate 513 is slidably installed in the main support plate 509, and one end of the third rack 511 is fixedly connected to one end of the fourth connecting rod 514, and the other end of the fourth connecting rod 514 is fixedly connected to one end of the lower support plate 515.

[0036] The lower end of the support plate moving rod 501 is fixedly connected to one end of the second top plate 516, and the other end of the second top plate 516 is in contact with the side surface of the lower support plate 515;

[0037] When the cylinder 401 drives the support plate moving rod 501 to slide in the second set plate 2, since the first rack 503 does not move and the position does not change, the first gear 502 will rotate, and the first gear 502 rotates and drives the first bevel gear 505 to rotate through the first connecting rod 504. Since the first bevel gear 505 is meshed with the second bevel gear 506, the second bevel gear 506 will rotate, and the second bevel gear 506 will change the direction of kinetic energy input. When the second bevel gear 506 rotates, it drives the second gear 508 to rotate through the second connecting rod 507. The second gear 508 rotates in place, and the second rack 510 and the third rack 510 meshed on both sides thereof are connected. The rack 511 starts to rise and fall, and the moving directions of the second rack 510 and the third rack 511 are opposite. The second rack 510 rises and the third rack 511 falls. The rise of the second rack 510 drives the third connecting rod 512 to move, thereby driving the upper support plate 513 to slide outward from the main support plate 509. The upper support plate 513 gradually rises, and its side gradually contacts the first top plate 302. The other side of the upper support plate 513 is in contact and connected with the hanging cloth 8. After the paste is injected, the hanging cloth 8 will be subjected to extrusion force. The supporting force provided by the first top plate 302 can increase the supporting force of the upper support plate 513 while preventing the gear mechanism connected to the upper support plate 513 from detaching.

[0038] The third rack 511 descends, and the fourth connecting rod 514 also descends, and the lower support plate 515 slides outward from the main support plate 509. As the lower support plate 515 gradually moves downward, its surface gradually contacts and connects with the second top plate 516. The function of the second top plate 516 is the same as that of the first top plate 302. The end of the lower support plate 515 away from the main support plate 509 is fixedly connected to the lower fixing frame 7, and the lower fixing frame 7 contacts and connects with the lower end of the hanging cloth 8;

[0039] The lower fixing frame 7 presses the hanging cloth 8 to make it completely contact with the ground, thereby improving the sealing between the hanging cloth 8 and the ground and preventing the paste from penetrating from the bottom.

[0040] The upper support plate 513 is fixedly connected to the lower end of the main fixing frame 6, the upper surface of the main fixing frame 6 is in contact with and connected to the rubber strip 801 in the hanging cloth 8, two trapezoidal top blocks 601 are slidably installed in the main fixing frame 6, the lower end of each trapezoidal top block 601 is fixedly connected to one end of two first springs 602, the other end of the first spring 602 is fixedly connected to the inner surface of the main fixing frame 6, the first spring 602 is sleeved on the outer surface of the first shock absorber 603, one end of the first shock absorber 603 is fixedly connected to the lower surface of the trapezoidal top block 601, and the other end is fixedly connected to the inner surface of the main fixing frame 6, one side of the trapezoidal top block 601 extends out of the main fixing frame 6, the main fixing frame 6 is provided with a notch corresponding to it, the trapezoidal top block 601 extends out of the main fixing frame 6 side and is in contact with and connected to the rubber strip 801 in the hanging cloth 8;

[0041] The distance between the two upper fixing frames 609 on the main fixing frame 6 is slightly greater than the width of the rear tail beam 301 .

[0042] When the upper support plate 513 moves upward, the main fixing frame 6 will also move until the upper surface of the main fixing frame 6 contacts the rubber strip 801 in the hanging cloth 8. The trapezoidal top block 601 in the main fixing frame 6 will be subjected to the pressure from the rubber strip 801 and gradually move toward the inside of the main fixing frame 6. At this time, the first spring 602 will contract and the first shock absorber 603 will shorten until the trapezoidal top block 601 is separated from the moving block 604.

[0043] The sides of the two trapezoidal top blocks 601 are respectively connected to one side, and the moving block 604 is slidably installed in the main fixed frame 6. The end of the moving block 604 away from the trapezoidal top block 601 is fixedly connected to one end of the second spring 605, and the other end of the second spring 605 is fixedly connected to the inner side of the main fixed frame 6. The second spring 605 is sleeved on the outer surface of the second shock absorber 606. One end of the second shock absorber 606 is fixedly connected to the main fixed frame 6, and the other end is fixedly connected to the moving block 604. The side of the moving block 604 is fixedly connected One end of the toggle rod 607 is connected, the toggle rod 607 extends out of the main fixing frame 6, and is in contact with the side of the reset plate 608 inside the slide rail 5091. The reset plate 608 is fixedly arranged in the slide rail 5091, and the upper end of the reset plate 608 is inclined. The upper end of the moving block 604 is fixedly connected to the upper fixing frame 609, and the inner surface of the upper fixing frame 609 is in contact with the rubber strip 801 in the hanging cloth 8. The cross section of the upper fixing frame 609 is "L"-shaped, and the "L"-shaped design can improve the stability of the rubber strip 801.

[0044] If there is a slight deviation in the position of the device when it is placed, there will be a distance between the upper fixing frame 609 and the rubber strip 801. After the upper fixing frame 609 rises, it cannot completely contact with the rubber strip 801, and the sealing is poor. Therefore, after the trapezoidal top block 601 is separated from the moving block 604, the moving block 604 loses its limiting force at this time, and the moving block 604 can move freely. In the initial state, the second spring 605 and the second shock absorber 606 are both in a compressed state. Therefore, after the moving block 604 loses its limiting force, the second spring 605 and the second shock absorber 606 extend, and the moving block 604 drives the upper fixing frame 609 to move toward the rubber strip 801 until the upper fixing frame 609 is completely in contact with the rubber strip 801 and the moving block 604 stops moving.

[0045] In order to solve the problem of restoring the moving block 604, when the main fixing frame 6 moves upward, the toggle rod 607 will move upward with the main fixing frame 6 and gradually move to the top of the slide rail 5091. When the main fixing frame 6 moves to the top of the slide rail 5091, since the upper end of the reset plate 608 is an inclined surface, the pressure on the toggle rod 607 at the top of the slide rail 5091 from the reset plate 608 will be reduced. After the trapezoidal top block 601 is separated from the moving block 604, the moving block 604 moves and the toggle rod 607 moves the same distance accordingly. After completing the first-stage fixation of the hanging cloth 8, the upper fixing frame 609 needs to disconnect from the rubber strip 801, and the main fixing frame 6 moves downward. When the main fixing frame 6 moves downward, the toggle rod 607 will move downward with the main fixing frame 6. The toggle rod 607 is gradually subjected to the pressure from the upper inclined surface of the reset plate 608, and the toggle rod 607 returns to the starting position. The toggle rod 607 drives the moving block 604 back to the starting position, completing the recovery of the moving block 604.

[0046] Baffles 610 are fixedly provided at both ends of the main fixing frame 6 , one side of the baffle 610 is fixedly connected to one end of a first telescopic rod 611 , and the other end of the first telescopic rod 611 is fixedly connected to the side surface of the upper fixing frame 609 .

[0047] The baffle 610 plays a role of limiting. When the moving block 604 moves, the first telescopic rod 611 will extend and contract accordingly.

[0048] The main support plate 509 , the upper support plate 513 and the lower support plate 515 are in contact with and connected to the hanging cloth 8 away from the support plate moving rod 501 to support the hanging cloth 8 .

[0049] The first vibration absorber 603 and the second vibration absorber 606 in the present application adopt the existing technology.

[0050] Working principle:

[0051] First, hang the hanging cloth 8 in the mine cave. The height of the hanging cloth 8 is greater than the height of the mine cave. The upper and lower parts of the hanging cloth 8 are redundant, which is convenient for the subsequent fixation of the hanging cloth 8. Then turn on the switch of the cylinder 401. The cylinder 401 provides energy for the movement of the push rod 4. The push rod 4 moves. The movement of the push rod 4 drives the upper tail beam connecting plate 3 to slide in the first set of plates 1, and at the same time drives the support plate moving rod 501 to slide in the second set of plates 2.

[0052] The tail beam connecting plate 3 drives the rear tail beam 301 to extend into the concave contour on the hanging cloth 8 corresponding to the rear tail beam 301 .

[0053] A plurality of the devices are arranged in a mine cave, and the hanging cloth 8 is supported by a plurality of supporting mechanisms.

[0054] When the cylinder 401 drives the support plate moving rod 501 to slide in the second set plate 2, the first rack 503 does not move, and the first gear 502 rotates. The rotation of the first gear 502 drives the first bevel gear 505 to rotate, and the second bevel gear 506 rotates. The rotation of the second bevel gear 506 drives the second gear 508 to rotate. The second gear 508 rotates in place, and the second rack 510 and the third rack 511 on both sides of it meshing with each other begin to rise and fall. The moving directions of the second rack 510 and the third rack 511 are opposite, and the second The rack 510 rises and the third rack 511 falls. The rise of the second rack 510 drives the third connecting rod 512 to move, thereby driving the upper support plate 513 to slide outward from the main support plate 509. The upper support plate 513 gradually rises, and its side surface gradually contacts the first top plate 302. The other side of the upper support plate 513 is in contact and connected with the hanging cloth 8. After the paste is injected, the hanging cloth 8 will be subjected to an extrusion force. The supporting force provided by the first top plate 302 can prevent the gear mechanism connected to the upper support plate 513 from detaching while raising the upper support plate 513.

[0055] The third rack 511 descends, and the fourth connecting rod 514 also descends accordingly, and the lower support plate 515 slides outward from the main support plate 509. As the lower support plate 515 gradually moves downward, its surface gradually contacts and connects with the second top plate 516, and the function of the second top plate 516 is the same as that of the first top plate 302. The lower support plate 515 is fixedly connected to the lower fixing frame 7 at the end away from the main support plate 509, and the lower fixing frame 7 contacts and connects with the lower end of the hanging cloth 8. The lower fixing frame 7 presses the hanging cloth 8 to make it completely contact with the ground, thereby improving the sealing between the hanging cloth 8 and the ground and preventing the paste from seeping in from the bottom.

[0056] When the upper support plate 513 moves upward, the main fixing frame 6 also moves accordingly, and the main fixing frame 6 drives the upper fixing frame 609 to move upward, and the upper fixing frame 609 is in an "L" shape until the surfaces of the main fixing frame 6 and the upper fixing frame 609 contact the rubber strip 801 in the hanging cloth 8.

[0057] When the surface of the main fixing frame 6 is in contact, the trapezoidal top block 601 in the main fixing frame 6 will be subjected to the pressure from the rubber strip 801 and gradually move toward the inside of the main fixing frame 6. At this time, the first spring 602 will contract and the first shock absorber 603 will shorten until the trapezoidal top block 601 is out of contact with the moving block 604.

[0058] If there is a slight deviation in the position of the device when it is placed, there will be a distance between the upper fixing frame 609 and the rubber strip 801. After the upper fixing frame 609 rises, it cannot completely contact with the rubber strip 801, and the sealing is poor. Therefore, after the trapezoidal top block 601 is separated from the moving block 604, the moving block 604 loses its restricting force, and the pressure on the toggle rod 607 from the reset plate 608 at the top of the slide rail 5091 will be reduced, and the moving block 604 can move freely. The second spring 605 and the second shock absorber 606 are extended, and the moving block 604 drives the upper fixing frame 609 to move toward the rubber strip 801 until the upper fixing frame 609 is completely in contact with the rubber strip 801 and the moving block 604 stops moving.

[0059] The rubber strip 801 is completely in contact with the rear tail beam 301 through the main fixing frame 6 and the upper fixing frame 609 to prevent the paste from penetrating into the coal mining area through the gap of the rear tail beam 301. After the hanging cloth 8 is fixed, the traction device of the hanging cloth 8 is removed.

[0060] The upper fixing frame 609 also makes the rubber strip 801 fit with the upper wall of the mine hole. The hanging cloth 8 is made of existing woven cloth products, and the hanging cloth 8 is a disposable item. The hanging cloth 8 in the next stage uses another hanging cloth 8.

[0061] When the paste is injected into the other side of the hanging cloth 8 and solidified, the cylinder 401 is started again, and the cylinder 401 drives the rear tail beam 301 and the support plate moving rod 501 to move in the opposite direction, and the upper support plate 513 and the lower support plate 515 are gradually retracted into the main support plate 509. At this time, the upper fixing frame 609 needs to be restored to facilitate the fixation of the hanging cloth 8 in the next stage. When the main fixing frame 6 moves downward, the toggle rod 607 will move downward with the main fixing frame 6, and the toggle rod 607 will gradually be subjected to the pressure from the upper end inclined surface of the reset plate 608. The toggle rod 607 returns to the starting position, and the toggle rod 607 drives the moving block 604 back to the starting position, completing the restoration of the upper fixing frame 609.

[0062] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A paste filling rapid isolation device behind the fully-mechanized mining working face in a coal mine, characterized by: The invention comprises a first set of plates (1), a second set of plates (2), a tail beam connecting plate (3), and a supporting mechanism (5), wherein the first set of plates (1) is fixedly mounted at the end of a front support, the tail beam connecting plate (3) is slidably mounted inside the first set of plates (1), one end of the tail beam connecting plate (3) is fixedly connected to a rear tail beam (301), the upper surface of the rear tail beam (301) is in contact with and connected to the surface of a mine pit, the side and lower surface of the rear tail beam (301) are in contact with and connected to a hanging cloth (8), a rubber strip (801) is fixedly arranged inside one side of the hanging cloth (8), the lower end of the tail beam connecting plate (3) is fixedly connected to one end of a first top plate (302), the first top plate (302) is in an "L" shape, and the other end of the first top plate (302) is The rear beam connecting plate (3) is connected to the surface of the upper supporting plate (513) in the supporting mechanism (5); one end of the tail beam connecting plate (3) is fixedly connected to one end of the pushing rod (4); the pushing rod (4) extends into the second set of plates (2) and is fixedly connected to the support plate moving rod (501) in the supporting mechanism (5); the support plate moving rod (501) is slidably installed in the second set of plates (2); the second set of plates (2) is arranged below the first set of plates (1); the middle of the pushing rod (4) is fixedly connected to the cylinder (401); the two sides of the cylinder (401) are each fixedly connected to one end of a fixing rod (402); the other ends of the two fixing rods (402) are respectively fixedly connected to the first set of plates (1) and the second set of plates (2).

2. A paste filling rapid isolation device behind the fully-mechanized mining working face of a coal mine according to claim 1, characterized in that: The support mechanism (5) comprises: a support plate moving rod (501), a first gear (502), and a main support plate (509); the first gear (502) is rotatably installed on the side of the support plate moving rod (501); the first gear (502) is meshingly connected with a first rack (503); the first rack (503) is fixedly arranged in the second set plate (2); the center of one side of the first gear (502) is fixedly connected to one end of a first connecting rod (504); the other end of the first connecting rod (504) is fixedly connected to a first bevel gear (505); the first bevel gear (505) is arranged in the support plate moving rod (501); the first bevel gear (505) is meshingly connected with a second bevel gear (506); the second bevel gear (506) is rotatably arranged in the support plate moving rod (501); the center of one side of the second bevel gear (506) is fixedly connected to one end of a second connecting rod (507); the other end of the second connecting rod (507) is fixedly connected to the first bevel gear (505); The second gear (508) is connected to the main support plate (509), and the second gear (508) is rotatably arranged in the main support plate (509). The middle part of the main support plate (509) is fixedly connected to one end of the support plate moving rod (501). The upper and lower ends of the main support plate (509) are provided with slide rails (5091). The two sides of the second gear (508) are respectively meshed and connected with the second rack (510) and the third rack (511). The second rack (510) and the third rack (511) are slidably installed. In the main support plate (509), one end of the second rack (510) is fixedly connected to one end of the third connecting rod (512), and the other end of the third connecting rod (512) is fixedly connected to the lower end of the upper support plate (513). The upper support plate (513) is slidably installed in the main support plate (509), and one end of the third rack (511) is fixedly connected to one end of the fourth connecting rod (514), and the other end of the fourth connecting rod (514) is fixedly connected to one end of the lower support plate (515); The upper support plate (513) is fixedly connected to the lower end of the main fixing frame (6); the upper surface of the main fixing frame (6) is in contact with and connected to the rubber strip (801) in the hanging cloth (8); two trapezoidal top blocks (601) are slidably installed in the main fixing frame (6); the lower end of each of the trapezoidal top blocks (601) is fixedly connected to one end of two first springs (602); the other end of the first spring (602) is fixedly connected to the inner surface of the main fixing frame (6); the first spring (602) is sleeved on the outer surface of the first shock absorber (603); one end of the first shock absorber (603) is fixedly connected to the lower surface of the trapezoidal top block (601); and the other end is fixedly connected to the inner surface of the main fixing frame (6); one side of the trapezoidal top block (601) extends out of the main fixing frame (6); the main fixing frame (6) is provided with a notch corresponding to the notch; the trapezoidal top block (601) extends out of the side of the main fixing frame (6) and is in contact with and connected to the rubber strip (801) in the hanging cloth (8); The side surfaces of one end of the two trapezoidal top blocks (601) are respectively in contact with the side surfaces of a moving block (604), and the moving block (604) is slidably installed in the main fixed frame (6). The end of the moving block (604) away from the trapezoidal top block (601) is fixedly connected to one end of a second spring (605), and the other end of the second spring (605) is fixedly connected to the inner side surface of the main fixed frame (6). The second spring (605) is sleeved on the outer surface of the second shock absorber (606), and one end of the second shock absorber (606) is fixedly connected to the main fixed frame (6), and the other end is fixedly connected to the moving block (6). The movable block (604) is fixedly connected, and the side of the movable block (604) is fixedly connected to one end of a toggle rod (607). The toggle rod (607) extends out of the main fixed frame (6) and is in contact with the side of a reset plate (608) inside the slide rail (5091). The reset plate (608) is fixedly arranged in the slide rail (5091), and the upper end of the reset plate (608) is inclined. The upper end of the movable block (604) is fixedly connected to an upper fixed frame (609), and the inner surface of the upper fixed frame (609) is in contact with a rubber strip (801) inside the hanging cloth (8).

3. A paste filling rapid isolation device behind the fully mechanized mining working face frame in a coal mine according to claim 2, characterized in that: The end of the lower support plate (515) away from the main support plate (509) is fixedly connected to a lower fixing frame (7), and the lower fixing frame (7) is in contact with and connected to the lower end of the hanging cloth (8).

4. A paste filling rapid isolation device behind the fully mechanized mining working face frame in a coal mine according to claim 2, characterized in that: Baffles (610) are fixedly arranged at both ends of the main fixing frame (6); one side of the baffle (610) is fixedly connected to one end of a first telescopic rod (611); and the other end of the first telescopic rod (611) is fixedly connected to the side of the upper fixing frame (609).

5. The rapid isolation device for paste filling behind the fully-mechanized mining face of a coal mine according to claim 1 is characterized by: The lower end of the support plate moving rod (501) is fixedly connected to one end of the second top plate (516), and the other end of the second top plate (516) is in contact with and connected to the side surface of the lower support plate (515).

6. A paste filling rapid isolation device behind the fully mechanized mining working face frame in a coal mine according to claim 2, characterized in that: The main support plate (509), the upper support plate (513) and the lower support plate (515) are in contact and connected with the hanging cloth (8) away from the support plate moving rod (501).

7. A paste filling rapid isolation device behind the fully mechanized mining working face frame in a coal mine according to claim 2, characterized in that: The rubber strips (801) on the hanging cloth (8) are arranged at equal distances to form a concave shape with the same width as the rear tail beam (301).

8. A paste filling rapid isolation device behind the fully mechanized mining working face of a coal mine according to claim 2, characterized in that: The cross section of the upper fixing frame (609) is "L" shaped.

Images