A universal high-pressure grouting pipe quick connection device for coal mines and its use method

Abstract

The present invention belongs to the technical field of grouting pipe connection devices, and specifically relates to a universal high-pressure grouting pipe quick connection device for coal mines and a method of using the same; the connection device comprises a three-jaw clamp fixing device, a tightening device and a connection device, the three-jaw clamp fixing device comprises a chuck body shell, a movable clamping claw, a toothed disc, a bevel gear and a disc body connecting piece, the chuck body shell is provided with a rectangular groove and a movable clamping claw, the top surface of the toothed disc is provided with a spiral tooth pattern, the bottom surface of the toothed disc is provided with a conical tooth pattern, and the disc body connecting piece comprises an external cylinder body and an internal cylinder body; the tightening device is provided with a thread B and an internal boss, and the tightening device and the disc body connecting piece are threadedly connected through the thread B and the tooth pattern A; the connection device comprises a fixed handle and connecting sleeves at both ends, the connecting sleeve is provided with a protrusion, and a through hole is provided inside the connection device; the present invention can realize fast and efficient sealed connection of high-pressure grouting pipes of different models and sizes through the mutual cooperation between different components.

Description

Technical Field

[0001] The invention belongs to the technical field of grouting pipe connection devices, and in particular relates to a universal high-pressure grouting pipe quick connection device for coal mines and a use method thereof. Background Art

[0002] Grouting anchor support is a surrounding rock reinforcement method in underground geotechnical engineering such as coal mine tunnel support. High-pressure grouting pipe is an important channel for grouting anchor. High-pressure grouting pipe connecting device is used to assist in connecting grouting anchor, grouting anchor turning machine, high-pressure grouting pipe and grouting pump, extending the pipeline to meet the actual needs of the construction site or laboratory, so the high-pressure grouting pipe connecting device plays a vital role; the connecting device used in the prior art is usually a type of connecting device corresponding to a type of high-pressure grouting pipe interface, without the function of reducing diameter. If the construction site or laboratory needs a reducing connecting device, it is necessary to contact the manufacturer in advance for customization, which is time-consuming and expensive, and the probability that the reducing connecting device is suitable for other pipeline connections is extremely low; therefore, it is very necessary to design a high-pressure grouting pipe connecting device that can be reused, has good sealing performance and can match a variety of models. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and to provide a universal high-pressure grouting pipe quick connection device and a method of use for coal mines which has a reasonable structure, is easy to operate, can be reused, has good sealing performance and can match a variety of high-pressure grouting pipe models.

[0004] The object of the present invention is achieved in this way: a universal high-pressure grouting pipe quick connection device for coal mines, which includes a three-claw clamp fixing device, the three-claw clamp fixing device includes a chuck body shell, a movable clamping claw, a toothed disc, a bevel gear, and a disc body connecting piece, the chuck body shell as a whole is a cylindrical cylinder, one end of the chuck body shell is provided with a rectangular groove, the other end of the chuck body shell is fixedly connected to the disc body connecting piece, a movable clamping claw is slidably provided in the rectangular groove, and the bottom surface of the movable clamping claw is provided with an arc tooth pattern; the top surface of the toothed disc is provided with a spiral tooth pattern, and the bottom surface of the toothed disc is provided with a conical tooth pattern, the toothed disc and the movable clamping claw are meshed and connected by the spiral tooth pattern and the arc tooth pattern, and the toothed disc is meshed and connected with the bevel gear through the conical tooth pattern; the disc body connecting piece includes an outer cylinder and an inner cylinder, the outer surface of the inner cylinder is provided with a tooth pattern A, and the inner surface of the inner cylinder is provided with a groove.

[0005] The high-pressure grouting pipe quick connection device includes a tightening device, which is a cylindrical barrel as a whole. The inner surface of the tightening device is provided with a thread B, and one end of the inner surface of the tightening device is provided with an internal boss. The tightening device and the disk body connector are threadedly connected through the thread B and the tooth pattern A.

[0006] The high-pressure grouting pipe quick connection device includes a connection device, and the connection device includes a fixed handle. The fixed handle is a cylinder as a whole. Both ends of the fixed handle are connected to connecting sleeves. The outer surface of the connecting sleeve is provided with a protrusion that is adapted to the groove. The connecting device and the disk body connector are slidingly connected through the protrusion and the groove. The tightening device is rotatably connected to the connecting device through the internal boss; a conical sealing cylinder that can be in sealing contact with the end of the grouting pipe is provided in the connecting sleeve, and a connecting through hole that passes through the connecting sleeve and the fixed handle is provided inside the connecting device.

[0007] The left end surface of the movable claw is provided with straight line teeth.

[0008] A guide groove is arranged on the side surface of the rectangular cutout, and a guide strip matched with the guide groove is arranged on the side surface of the movable clamping claw.

[0009] The wall thickness of one end of the chuck body shell provided with the rectangular groove is greater than that of the other end, and the toothed disc and the bevel gear are arranged inside the end of the chuck body shell with a thinner wall thickness.

[0010] The inner diameter of the toothed disc is the same as the inner diameter of the end of the chuck body shell with a thicker wall thickness, and the outer diameter of the toothed disc matches the inner diameter of the end of the chuck body shell with a thinner wall thickness.

[0011] The tooth roots and tooth tips of the conical tooth patterns coincide with the inner diameter and outer diameter of the toothed disc, respectively.

[0012] The bevel gear is provided with a first hexagonal hole, and the connection between the chuck body shell and the chuck body connecting piece is provided with a second hexagonal hole corresponding to the first hexagonal hole.

[0013] The outer diameters of the fixing handle and the tightening device are the same as the outer diameter of the three-jaw clamp fixing device.

[0014] The method for using the universal high-pressure grouting pipe quick connection device for coal mines comprises the following steps:

[0015] Step 1): Use a hexagonal wrench to insert the second hexagonal hole at one end of the connecting device into the first hexagonal hole at the end of the bevel gear, rotate the hexagonal wrench, the bevel gear will drive the toothed disc to rotate, and the toothed disc will drive the movable claw to move outward, release the claw, and the operation of the three-claw clamping device at the other end is the same;

[0016] Step 2): Rotate the tightening device at one end of the connecting device, so that the three-jaw clamp fixing device and the tightening device are separated from each other through the mutual engagement of the thread B and the tooth pattern A, and the operation of the tightening device at the other end is the same;

[0017] Step 3): Insert the mining high-pressure hydraulic pipe through the three-claw clamp fixing device into the interior of the connection device, and make its end contact with the conical sealing cylinder, use a hexagonal wrench to rotate the conical gear to tighten the movable clamping claw, and fix the mining high-pressure grouting joint. The operation methods at both ends are the same;

[0018] Step 4): Rotate the tightening device at one end of the connecting device to make the three-claw clamp fixing device approach the tightening device. The three-claw clamp fixing device drives the mining high-pressure grouting pipe joint to be retracted so that its end is in close contact with the conical sealing cylinder under pressure, thereby realizing the sealed connection between the mining high-pressure grouting pipe and the connecting device. The same operation is performed on the other end.

[0019] The beneficial effects of the present invention are as follows: the universal high-pressure grouting pipe quick connection device for coal mines of the present invention mainly comprises a three-claw clamp fixing device, a tightening device and a connecting device; the three-claw clamp fixing device is located on both sides of the quick connection device; the three-claw clamp fixing device comprises a chuck body shell, a movable clamping claw, a toothed disc, a bevel gear and a disc body connecting piece; the toothed disc and the bevel gear are located inside the chuck body shell; the bevel gear, the toothed disc and the movable clamping claw cooperate with each other to realize the loosening and closing of the clamping claw, thereby fixing the high-pressure grouting pipe, which is convenient and efficient; the connecting sleeve of the connecting device is inserted into the inner cylinder of the disc body connecting piece, and is limited and guided by the protrusion and the groove to realize the sliding connection between the connecting device and the three-claw clamp fixing device; the tightening device is sleeved on The outside of the connecting device has an internal boss in contact with the outer wall of the connecting sleeve, and the internal boss is limited by the convex block. The tightening device is threadedly connected to the three-jaw clamp fixing device through its thread B. The connecting device and the three-jaw clamp fixing device can be connected as a whole through the tightening device; the hollow part inside the connecting sleeve is a cone as a whole, and high-pressure grouting pipes of different models and sizes can be in close contact with the conical sealing cylinder during the insertion process of the connecting device, thereby realizing the connection of high-pressure grouting pipes of different models and sizes; the overall structure of the present invention is reasonable and the operation is simple. Through the mutual cooperation between different components, fast and efficient sealed connection of high-pressure grouting pipes of different models and sizes can be realized, thereby improving work efficiency and reducing labor intensity and production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The present invention is a schematic diagram of the overall structure of a universal high-pressure grouting pipe quick connection device for coal mines.

[0021] Figure 2 The present invention is a structural schematic diagram of a tightening device of a universal high-pressure grouting pipe quick connection device for coal mines.

[0022] Figure 3 The present invention is a schematic structural diagram of a connection device of a universal high-pressure grouting pipe quick connection device for coal mines.

[0023] Figure 4 The present invention is a schematic cross-sectional structural diagram of a connection device of a universal high-pressure grouting pipe quick connection device for coal mines.

[0024] Figure 5 The present invention is a schematic structural diagram of the internal structure of a three-claw clamp fixing device of a universal high-pressure grouting pipe quick connection device for coal mines.

[0025] Figure 6 The present invention is a schematic structural diagram of a chuck body shell of a universal high-pressure grouting pipe quick connection device for coal mines.

[0026] Figure 7 The present invention is a schematic structural diagram of a movable claw of a universal high-pressure grouting pipe quick connection device for coal mines.

[0027] Figure 8 The present invention is a schematic structural diagram of a disc connector of a universal high-pressure grouting pipe quick-connect device for coal mines.

[0028] Fig. 9 The present invention is a schematic structural diagram of a toothed disc of a universal high-pressure grouting pipe quick connection device for coal mines.

[0029] Fig.10 The present invention is a schematic structural diagram of a bevel gear of a universal high-pressure grouting pipe quick connection device for coal mines.

[0030] In the figure: 1, three-jaw clamp fixing device 2, tightening device 3, connecting device 4, chuck body shell 5, movable clamping claw 6, toothed disc 7, bevel gear 8, disc body connecting piece 9, rectangular groove 10, arc tooth pattern 11, linear tooth pattern 12, spiral tooth pattern 13, conical tooth pattern 14, first hexagonal hole 15, external cylinder 16, tooth pattern A 17, thread B 18, internal boss 19, fixed handle 20, conical sealing cylinder 21, protrusion 22, groove 23, connecting sleeve 24, internal cylinder 25, guide groove 26, guide strip 27, second hexagonal hole 28, connecting through hole. DETAILED DESCRIPTION

[0031] The present invention will be further described below in conjunction with the accompanying drawings.

[0032] Example 1

[0033] like Figure 1-10 As shown, a universal high-pressure grouting pipe quick connection device for coal mines includes a three-claw clamp fixing device 1, the three-claw clamp fixing device 1 includes a chuck body shell 4, a movable clamping claw 5, a toothed disc 6, a bevel gear 7, and a disc body connecting piece 8. The chuck body shell 4 is a cylindrical barrel as a whole, and a rectangular groove 9 is provided at one end of the chuck body shell 4. The disc body connecting piece 8 is fixedly connected to the other end of the chuck body shell 4. The movable clamping claw 5 is slidably provided in the rectangular groove 9, and the bottom surface of the movable clamping claw 5 is provided with an arc Linear tooth pattern 10; the top surface of the toothed disc 6 is provided with a spiral tooth pattern 12, and the bottom surface of the toothed disc 6 is provided with a conical tooth pattern 13, the toothed disc 6 and the movable claw 5 are meshed and connected through the spiral tooth pattern 12 and the arc tooth pattern 10, and the toothed disc 6 is meshed and connected with the bevel gear 7 through the conical tooth pattern 13; the disc body connecting part 8 includes an outer cylinder 15 and an inner cylinder 24, the outer surface of the inner cylinder 24 is provided with a tooth pattern A16, and the inner surface of the inner cylinder 24 is provided with a groove 22.

[0034] The high-pressure grouting pipe quick connection device includes a tightening device 2, which is a cylindrical barrel as a whole. The inner surface of the tightening device 2 is provided with a thread B17, and one end of the inner surface of the tightening device 2 is provided with an internal boss 18. The tightening device 2 and the disk body connector 8 are threadedly connected through the thread B17 and the tooth pattern A16.

[0035] The high-pressure grouting pipe quick connection device includes a connection device 3, and the connection device 3 includes a fixed handle 19. The fixed handle 19 is a cylinder as a whole. Both ends of the fixed handle 19 are connected with connecting sleeves 23. The outer surface of the connecting sleeve 23 is provided with a protrusion 21 adapted to the groove 22. The connecting device 3 and the disk connector 8 are slidingly connected through the protrusion 21 and the groove 22. The tightening device 2 is rotatably connected to the connecting device 3 through the internal boss 18; a conical sealing cylinder 20 that can be in sealing contact with the end of the grouting pipe is provided in the connecting sleeve 23, and a connecting through hole 28 that passes through the connecting sleeve 23 and the fixed handle 19 is provided inside the connecting device 3.

[0036] The method for using the universal high-pressure grouting pipe quick connection device for coal mines comprises the following steps:

[0037] Step 1): Use a hexagonal wrench to insert the first hexagonal hole 14 at the end of the bevel gear 7 through the second hexagonal hole 27 at one end of the connecting device, rotate the hexagonal wrench, the bevel gear 7 will drive the toothed disc 6 to rotate, and the toothed disc 6 will drive the movable claw 5 to move outward, release the claw, and the operation of the three-claw clamping device 1 at the other end is the same;

[0038] Step 2): Rotate the tightening device 2 at one end of the connecting device, so that the three-jaw clamp fixing device 1 and the tightening device 2 are separated from each other through the mutual engagement of the thread B17 and the tooth pattern A16, and the operation of the tightening device 2 at the other end is the same;

[0039] Step 3): Insert the mining high-pressure hydraulic pipe through the three-jaw clamp fixing device 1 into the interior of the connection device, and make its end contact with the conical sealing cylinder 20, use a hexagonal wrench to rotate the conical gear 7 to tighten the movable clamping claw 5, and fix the mining high-pressure grouting joint. The operation methods at both ends are the same;

[0040] Step 4): Rotate the tightening device 2 at one end of the connecting device to make the three-jaw clamp fixing device 1 approach the tightening device 2. The three-jaw clamp fixing device 1 drives the mining high-pressure grouting pipe joint to be retracted, so that its end is in close contact with the conical sealing cylinder 20 under pressure, thereby realizing the sealed connection between the mining high-pressure grouting pipe and the connecting device. The same operation is performed on the other end.

[0041] The universal high-pressure grouting pipe quick connection device for coal mines of the present invention mainly comprises a three-claw clamp fixing device 1, a tightening device 2 and a connecting device 3. The three-claw clamp fixing device 1 is located on both sides of the quick connection device. The three-claw clamp fixing device 1 comprises a chuck body shell 4, a movable clamping claw 5, a toothed disc 6, a bevel gear 7 and a disc body connecting piece 8. The toothed disc 6 and the bevel gear 7 are located inside the chuck body shell 4. Through the mutual cooperation of the bevel gear 7, the toothed disc 6 and the movable clamping claw 5, the clamping claw can be loosened and closed, thereby fixing the high-pressure grouting pipe, which is convenient and efficient; the connecting sleeve 23 of the connecting device 3 is inserted into the internal cylinder 24 of the disc body connecting piece 8, and is limited and guided by the protrusion 21 and the groove 22, so as to realize the sliding connection between the connecting device 3 and the three-claw clamp fixing device 1; the tightening device 2 is sleeved on The internal boss 18 of the connecting device 3 is in contact with the outer wall of the connecting sleeve 23, and the internal boss 18 is limited by the protrusion 21. The tightening device 2 is threadedly connected to the three-jaw clamp fixing device 1 through its thread B17. The connecting device 3 and the three-jaw clamp fixing device 1 can be connected as a whole through the tightening device 2; the hollow part inside the connecting sleeve 23 is a cone as a whole, and high-pressure grouting pipes of different models and sizes can be in close contact with the conical sealing cylinder 20 during the insertion process of the connecting device 3, thereby realizing the connection of high-pressure grouting pipes of different models and sizes; the overall structure of the present invention is reasonable and the operation is simple. Through the mutual cooperation between different components, fast and efficient sealed connection of high-pressure grouting pipes of different models and sizes can be realized, thereby improving work efficiency and reducing labor intensity and production costs.

[0042] Example 2

[0043] like Figure 1-9 As shown, a universal high-pressure grouting pipe quick connection device for coal mines includes a three-claw clamp fixing device 1, the three-claw clamp fixing device 1 includes a chuck body shell 4, a movable clamping claw 5, a toothed disc 6, a bevel gear 7, and a disc body connecting piece 8. The chuck body shell 4 is a cylindrical barrel as a whole, and a rectangular groove 9 is provided at one end of the chuck body shell 4. The disc body connecting piece 8 is fixedly connected to the other end of the chuck body shell 4. The movable clamping claw 5 is slidably provided in the rectangular groove 9, and the bottom surface of the movable clamping claw 5 is provided with an arc Linear tooth pattern 10; the top surface of the toothed disc 6 is provided with a spiral tooth pattern 12, and the bottom surface of the toothed disc 6 is provided with a conical tooth pattern 13, the toothed disc 6 and the movable claw 5 are meshed and connected through the spiral tooth pattern 12 and the arc tooth pattern 10, and the toothed disc 6 is meshed and connected with the bevel gear 7 through the conical tooth pattern 13; the disc body connecting part 8 includes an outer cylinder 15 and an inner cylinder 24, the outer surface of the inner cylinder 24 is provided with a tooth pattern A16, and the inner surface of the inner cylinder 24 is provided with a groove 22.

[0044] The high-pressure grouting pipe quick connection device includes a tightening device 2, which is a cylindrical barrel as a whole. The inner surface of the tightening device 2 is provided with a thread B17, and one end of the inner surface of the tightening device 2 is provided with an internal boss 18. The tightening device 2 and the disk body connector 8 are threadedly connected through the thread B17 and the tooth pattern A16.

[0045] The high-pressure grouting pipe quick connection device includes a connection device 3, and the connection device 3 includes a fixed handle 19. The fixed handle 19 is a cylinder as a whole. Both ends of the fixed handle 19 are connected with connecting sleeves 23. The outer surface of the connecting sleeve 23 is provided with a protrusion 21 adapted to the groove 22. The connecting device 3 and the disk connector 8 are slidingly connected through the protrusion 21 and the groove 22. The tightening device 2 is rotatably connected to the connecting device 3 through the internal boss 18; a conical sealing cylinder 20 that can be in sealing contact with the end of the grouting pipe is provided in the connecting sleeve 23, and a connecting through hole 28 that passes through the connecting sleeve 23 and the fixed handle 19 is provided inside the connecting device 3.

[0046] For better effect, the left end face of the movable clamping claw 5 is provided with a linear tooth pattern 11, and the plurality of clamping claws 5 bite the high-pressure grouting pipe through the linear tooth pattern 11, which can increase the stability of the connection between the quick connection device and the high-pressure grouting pipe.

[0047] For better effect, a guide groove 25 is provided on the side of the rectangular groove 9, and a guide bar 26 matching the guide groove 25 is provided on the side of the movable claw 5. When the movable claw 5 moves outward or inward under the drive of the toothed disk 6, the movable claw 5 can be guided and limited by the cooperation between the guide groove 25 and the guide bar 26 to ensure smooth movement.

[0048] In order to achieve better results, the chuck body shell 4 is provided with a rectangular groove 9 whose wall thickness at one end is greater than that at the other end. The toothed disc 6 and the bevel gear 7 are arranged inside the end of the chuck body shell 4 where the wall thickness is thinner. The toothed disc 6 is limited by the internal structure of the chuck body shell 4. One end of the bevel gear 7 is fixed to the inner wall of the three-claw clamp fixing device. The overall structure of the device is compact and can efficiently fix the high-pressure grouting pipe.

[0049] For better effect, the inner diameter of the toothed disc 6 is the same as the inner diameter of the end of the chuck body shell 4 with a thicker wall thickness, and the outer diameter of the toothed disc 6 matches the inner diameter of the end of the chuck body shell 4 with a thinner wall thickness, so that the internal structure of the chuck body shell 4 can effectively limit the toothed disc 6, so that the toothed disc 6 can rotate stably under the drive of the bevel gear 7.

[0050] For better effect, the tooth root and tooth tip of the conical tooth pattern 13 coincide with the inner diameter and outer diameter of the toothed disc 6 , respectively, to ensure that the toothed disc 6 can efficiently mesh with the bevel gear 7 through the conical tooth pattern 13 .

[0051] For better effect, a first hexagonal hole 14 is provided on the bevel gear 7, and a second hexagonal hole 27 corresponding to the first hexagonal hole 14 is provided at the connection between the chuck body shell 4 and the disc body connector 8. A hexagonal wrench can be used to insert the first hexagonal hole 14 at the end of the bevel gear 7 through the second hexagonal hole 27 to operate the bevel gear 7, which is simple and efficient.

[0052] For better effect, the outer diameters of the fixing handle 19 and the tightening device 2 are the same as the outer diameter of the three-jaw clamp fixing device 1, so that the quick connection device is cylindrical as a whole, reducing the chance of interference with other equipment at the construction site and enhancing the practicality of the device.

[0053] The method for using the universal high-pressure grouting pipe quick connection device for coal mines comprises the following steps:

[0054] Step 1): Use a hexagonal wrench to insert the first hexagonal hole 14 at the end of the bevel gear 7 through the second hexagonal hole 27 at one end of the connecting device, rotate the hexagonal wrench, the bevel gear 7 will drive the toothed disc 6 to rotate, and the toothed disc 6 will drive the movable claw 5 to move outward, release the claw, and the operation of the three-claw clamping device 1 at the other end is the same;

[0055] Step 2): Rotate the tightening device 2 at one end of the connecting device, so that the three-jaw clamp fixing device 1 and the tightening device 2 are separated from each other through the mutual engagement of the thread B17 and the tooth pattern A16, and the operation of the tightening device 2 at the other end is the same;

[0056] Step 3): Insert the mining high-pressure hydraulic pipe through the three-jaw clamp fixing device 1 into the interior of the connection device, and make its end contact with the conical sealing cylinder 20, use a hexagonal wrench to rotate the conical gear 7 to tighten the movable clamping claw 5, and fix the mining high-pressure grouting joint. The operation methods at both ends are the same;

[0057] Step 4): Rotate the tightening device 2 at one end of the connecting device to make the three-jaw clamp fixing device 1 approach the tightening device 2. The three-jaw clamp fixing device 1 drives the mining high-pressure grouting pipe joint to be retracted, so that its end is in close contact with the conical sealing cylinder 20 under pressure, thereby realizing the sealed connection between the mining high-pressure grouting pipe and the connecting device. The same operation is performed on the other end.

[0058] The universal high-pressure grouting pipe quick connection device for coal mines of the present invention mainly comprises a three-claw clamp fixing device 1, a tightening device 2 and a connecting device 3. The three-claw clamp fixing device 1 is located on both sides of the quick connection device. The three-claw clamp fixing device 1 comprises a chuck body shell 4, a movable clamping claw 5, a toothed disc 6, a bevel gear 7 and a disc body connecting piece 8. The toothed disc 6 and the bevel gear 7 are located inside the chuck body shell 4. Through the mutual cooperation of the bevel gear 7, the toothed disc 6 and the movable clamping claw 5, the clamping claw can be loosened and closed, thereby fixing the high-pressure grouting pipe, which is convenient and efficient; the connecting sleeve 23 of the connecting device 3 is inserted into the internal cylinder 24 of the disc body connecting piece 8, and is limited and guided by the protrusion 21 and the groove 22, so as to realize the sliding connection between the connecting device 3 and the three-claw clamp fixing device 1; the tightening device 2 is sleeved on The internal boss 18 of the connecting device 3 is in contact with the outer wall of the connecting sleeve 23, and the internal boss 18 is limited by the protrusion 21. The tightening device 2 is threadedly connected to the three-jaw clamp fixing device 1 through its thread B17. The connecting device 3 and the three-jaw clamp fixing device 1 can be connected as a whole through the tightening device 2; the hollow part inside the connecting sleeve 23 is a cone as a whole, and high-pressure grouting pipes of different models and sizes can be in close contact with the conical sealing cylinder 20 during the insertion process of the connecting device 3, thereby realizing the connection of high-pressure grouting pipes of different models and sizes; the overall structure of the present invention is reasonable and the operation is simple. Through the mutual cooperation between different components, fast and efficient sealed connection of high-pressure grouting pipes of different models and sizes can be realized, thereby improving work efficiency and reducing labor intensity and production costs.

Claims

1. A universal high-pressure grouting pipe quick connection device for coal mines, comprising a three-claw clamp fixing device (1), characterized in that: The three-jaw clamp fixing device (1) comprises a chuck body shell (4), a movable clamping claw (5), a toothed disc (6), a bevel gear (7), and a disc body connecting piece (8); the chuck body shell (4) is a cylindrical barrel as a whole; one end of the chuck body shell (4) is provided with a rectangular groove (9); the other end of the chuck body shell (4) is fixedly connected to the disc body connecting piece (8); a movable clamping claw (5) is slidably provided in the rectangular groove (9); the bottom surface of the movable clamping claw (5) is provided with an arc tooth pattern (10); the top surface of the toothed disc (6) is provided with a spiral tooth pattern (11); The toothed disc (6) has a spiral tooth pattern (12), the bottom surface of the toothed disc (6) is provided with a conical tooth pattern (13), the toothed disc (6) and the movable claw (5) are meshedly connected via the spiral tooth pattern (12) and the arc tooth pattern (10), and the toothed disc (6) is meshedly connected with the bevel gear (7) via the conical tooth pattern (13); the disc body connecting member (8) comprises an outer cylinder (15) and an inner cylinder (24), the outer surface of the inner cylinder (24) is provided with a tooth pattern A (16), and the inner surface of the inner cylinder (24) is provided with a groove (22); The high-pressure grouting pipe quick connection device comprises a tightening device (2), the tightening device (2) being a cylindrical body as a whole, the inner surface of the tightening device (2) being provided with a thread B (17), one end of the inner surface of the tightening device (2) being provided with an internal boss (18), the tightening device (2) and the disk body connector (8) being threadedly connected via the thread B (17) and the tooth pattern A (16); The high-pressure grouting pipe quick connection device comprises a connection device (3), the connection device (3) comprises a fixed handle (19), the fixed handle (19) is a cylindrical body, both ends of the fixed handle (19) are connected to a connection sleeve (23), the outer surface of the connection sleeve (23) is provided with a convex block (21) matched with the groove (22), the connection device (3) and the disk connecting member (8) are slidably connected via the convex block (21) and the groove (22), and the tightening device (2) is rotatably connected to the connection device (3) via the internal boss (18); a conical sealing cylinder (20) capable of sealingly contacting the end of the grouting pipe is provided inside the connection sleeve (23), and a connecting through hole (28) penetrating the connection sleeve (23) and the fixed handle (19) is provided inside the connection device (3); The left end surface of the movable claw (5) is provided with a linear tooth pattern (11); A guide groove (25) is provided on the side surface of the rectangular cutout (9), and a guide strip (26) matching the guide groove (25) is provided on the side surface of the movable claw (5).

2. A universal high-pressure grouting pipe quick connection device for coal mines as claimed in claim 1, characterized in that: The wall thickness of one end of the chuck body shell (4) provided with the rectangular groove (9) is greater than that of the other end, and the toothed disc (6) and the bevel gear (7) are arranged inside the end of the chuck body shell (4) with a thinner wall thickness.

3. A universal high-pressure grouting pipe quick connection device for coal mines as claimed in claim 2, characterized in that: The inner diameter of the toothed disc (6) is the same as the inner diameter of the end of the chuck body shell (4) with a thicker wall thickness, and the outer diameter of the toothed disc (6) matches the inner diameter of the end of the chuck body shell (4) with a thinner wall thickness.

4. A universal high-pressure grouting pipe quick connection device for coal mines as claimed in claim 1, characterized in that: The tooth roots and tooth tips of the conical tooth pattern (13) coincide with the inner diameter and outer diameter of the toothed disc (6) respectively.

5. A universal high-pressure grouting pipe quick connection device for coal mines as claimed in claim 1, characterized in that: The bevel gear (7) is provided with a first hexagonal hole (14), and a second hexagonal hole (27) corresponding to the first hexagonal hole (14) is provided at the connection between the chuck body shell (4) and the chuck body connecting piece (8).

6. A universal high-pressure grouting pipe quick connection device for coal mines as claimed in claim 1, characterized in that: The outer diameters of the fixing handle (19) and the tightening device (2) are the same as the outer diameter of the three-jaw clamp fixing device (1).

7. The method for using the universal high-pressure grouting pipe quick connection device for coal mines according to claim 5, characterized in that: It includes the following steps: Step 1): Use a hexagonal wrench to insert the first hexagonal hole (14) at the end of the bevel gear (7) through the second hexagonal hole (27) at one end of the connecting device, rotate the hexagonal wrench, the bevel gear (7) will drive the toothed disc (6) to rotate, and the toothed disc (6) will drive the movable claw (5) to move outward, release the claw, and the operation of the three-claw clamping device (1) at the other end is the same; Step 2): Rotate the tightening device (2) at one end of the connecting device, so that the three-jaw clamp fixing device (1) and the tightening device (2) are moved away from each other through the mutual engagement of the thread B (17) and the tooth pattern A (16), and the tightening device (2) at the other end is operated in the same manner; Step 3): insert the mining high-pressure hydraulic pipe through the three-jaw clamp fixing device (1) into the interior of the connection device, and make its end contact with the conical sealing cylinder (20), use a hexagonal wrench to rotate the conical gear (7) to tighten the movable clamping claw (5), and fix the mining high-pressure grouting joint. The operation methods at both ends are the same; Step 4): Rotate the tightening device (2) at one end of the connection device to move the three-claw clamp fixing device (1) closer to the tightening device (2). The three-claw clamp fixing device (1) drives the mining high-pressure grouting pipe joint to be retracted, so that its end is in close contact with the conical sealing cylinder (20) under pressure, thereby achieving a sealed connection between the mining high-pressure grouting pipe and the connection device. The same operation is performed on the other end.

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