Coal mine underground roadway surrounding rock reinforcement grouting system

Abstract

The invention provides a coal mine underground roadway surrounding rock reinforcement grouting system, and relates to the technical field of coal mining. Comprising a stirring barrel, a grouting pump, a moving frame, a grouting pipe mechanism, a steering mechanism, a grouting pipe length adjusting mechanism, a plugging mechanism and a power mechanism, and an input opening of the grouting pump communicates with the stirring barrel; the grouting pump and the stirring barrel are both arranged on the moving frame; the grouting pipe mechanism communicates with an output port of the grouting pump, and the grouting pipe mechanism is used for grouting the drill hole; the steering mechanism is connected with the grouting pipe mechanism and used for adjusting the angle of the grouting pipe mechanism so that the grouting pipe mechanism can be aligned with the drilled hole. The grouting pipe length adjusting mechanism is connected with the steering mechanism and the grouting pipe mechanism, and the grouting pipe length adjusting mechanism is used for adjusting the length of the grouting pipe mechanism; the periphery of the grouting pipe mechanism is sleeved with the plugging mechanism, and the plugging mechanism is used for plugging a drill hole when grouting is conducted on the interior of the drill hole through the grouting pipe mechanism; and the power mechanism is connected with the grouting pipe length adjusting mechanism.

Description

Technical Field

[0001] The invention relates to the technical field of coal mining, and in particular to a surrounding rock reinforcement grouting system for underground coal mine tunnels. Background Art

[0002] Most of the coal mines in my country are deep shaft mines, which means that the tunnels in the coal mines are always under tremendous pressure during the mining process. In order to ensure the firmness of the tunnels, grouting machines are used in the existing technology to reinforce the surrounding rocks of the underground tunnels in coal mines.

[0003] However, when traditional grouting machines perform grouting reinforcement after drilling holes at the top of the tunnel or at places with large elevation angles, it is difficult to fix the grouting pipe, resulting in low grouting efficiency and easy grouting leakage.

[0004] Therefore, it is necessary to provide a new coal mine underground tunnel surrounding rock reinforcement grouting system to solve the above technical problems. Summary of the invention

[0005] The invention provides a coal mine underground tunnel surrounding rock reinforcement grouting system, which is used to solve the problems of complicated fixing of grouting pipes, low grouting efficiency and grout leakage in the prior art.

[0006] The present invention provides a coal mine underground tunnel surrounding rock reinforcement grouting system, comprising: Mixing tank; A grouting pump, wherein the input port of the grouting pump is connected to the mixing barrel; A mobile frame, on which the grouting pump and the mixing barrel are both arranged; A grouting pipe mechanism, the grouting pipe mechanism is connected to the output port of the grouting pump, and the grouting pipe mechanism is used for grouting into the borehole; A steering mechanism, the steering mechanism is connected to the grouting pipe mechanism, and the steering mechanism is used to adjust the angle of the grouting pipe mechanism so that the grouting pipe mechanism is aligned with the drill hole; A grouting pipe length adjustment mechanism, the grouting pipe length adjustment mechanism is connected to the steering mechanism and the grouting pipe mechanism, and the grouting pipe length adjustment mechanism is used to adjust the length of the grouting pipe mechanism; A plugging mechanism, the plugging mechanism is sleeved on the outer circumference of the grouting pipe mechanism, and the plugging mechanism is used to plug the borehole when grouting is performed in the borehole through the grouting pipe mechanism; A power mechanism is connected to the grouting pipe length adjustment mechanism, and the power mechanism is connected to the blocking mechanism.

[0007] According to a coal mine underground tunnel surrounding rock reinforcement grouting system provided by the present invention, rollers and brake plates are arranged at the bottom of the movable frame, and the movable frame is provided with a lifting hydraulic cylinder, and the telescopic rod of the lifting hydraulic cylinder passes through the movable frame and is connected to the brake plate.

[0008] According to a coal mine underground tunnel surrounding rock reinforcement grouting system provided by the present invention, two mounting plates are spaced apart on the upper part of the movable frame, and the steering mechanism is rotatably matched with the two mounting plates.

[0009] According to a coal mine underground tunnel surrounding rock reinforcement grouting system provided by the present invention, the steering mechanism comprises: A rotating toothed disc is arranged between the two mounting plates, the rotating toothed disc is rotatably matched with the two mounting plates via a rotating shaft, and the rotating toothed disc is provided with a mounting hole, and the mounting hole forms an opening at the edge of the rotating toothed disc; a gear meshing with the rotating toothed disc; The motor is arranged on a side of one of the mounting plates away from the rotating gear disc, and the rotating shaft of the motor is fixedly connected to the gear.

[0010] According to a coal mine underground tunnel surrounding rock reinforcement grouting system provided by the present invention, the grouting pipe mechanism comprises: A fixed pipe, wherein a fixed sleeve is arranged in the mounting hole, the fixed pipe is sleeved inside the fixed sleeve, and one end of the fixed pipe is connected with the output port of the grouting pump through a connecting pipe; A plurality of adjusting tubes, wherein the plurality of adjusting tubes are connected end to end in sequence, wherein the adjusting tube at the end is connected to the other end of the fixed tube; The grouting nozzle is connected to the regulating pipe located at the head end.

[0011] According to a coal mine underground tunnel surrounding rock reinforcement grouting system provided by the present invention, the grouting pipe length adjustment mechanism comprises: A support plate, wherein the support plate is provided with a through hole and the support plate is sleeved on the outer circumference of the regulating tube; A telescopic hydraulic cylinder, wherein the telescopic rod of the telescopic hydraulic cylinder is connected to the support plate, and the cylinder body of the telescopic hydraulic cylinder is connected to the rotating gear disc; A clamping assembly is arranged on the support plate, and the clamping assembly is used to clamp or release the adjusting tube.

[0012] According to a coal mine underground tunnel surrounding rock reinforcement grouting system provided by the present invention, the clamping assembly comprises: Two clamping components, the two clamping components are symmetrically arranged at the edge of the through hole, the clamping components include a vertical plate, an internally threaded tube, a support screw, a rotating block and an arc-shaped brake block, the vertical plate is connected to the support plate, the internally threaded tube passes through the vertical plate, the support screw is threadedly matched with the internally threaded tube, the end of the support screw away from the adjusting tube is connected to the rotating block, and the end of the support screw close to the adjusting tube is connected to the arc-shaped brake block.

[0013] According to a coal mine underground tunnel surrounding rock reinforcement grouting system provided by the present invention, the blocking mechanism comprises: An expansion sealing ring, the expansion sealing ring is sleeved on the outer circumference of the regulating tube; A movable ring, which is sleeved on the outer circumference of the adjusting tube and is located between the expansion sealing ring and the support plate; A fixed ring, which is sleeved on the outer circumference of the adjusting tube, and is located between the moving ring and the supporting plate. A positioning ring is provided on the outer circumference of the adjusting tube, and the fixed ring abuts against the positioning ring; A plurality of connecting rods are arranged at intervals along the circumferential direction on the outer circumference of the adjusting tube, and the connecting rods include a first hinged rod and a second hinged rod, one end of the first hinged rod is hinged to the movable ring, the other end of the first hinged rod is hinged to one end of the second hinged rod, and the other end of the second hinged rod is hinged to the fixed ring.

[0014] According to a coal mine underground tunnel surrounding rock reinforcement grouting system provided by the present invention, the interior of the expansion sealing ring has a cavity, and the expansion sealing ring is provided with an inflation joint connected to the cavity.

[0015] According to a coal mine underground tunnel surrounding rock reinforcement grouting system provided by the present invention, the power mechanism comprises: A plurality of adjusting screws, wherein the plurality of adjusting screws are arranged at intervals on the edge of the through hole; A plurality of rotating cylinders, wherein the plurality of rotating cylinders are threadably matched with the plurality of adjusting screws in a one-to-one correspondence; A plurality of first connection blocks, the plurality of first connection blocks are arranged one by one at one end of the plurality of rotating cylinders away from the support plate, and the first connection blocks are rotatably matched with the rotating cylinders; A plurality of adjusting steel ropes, one end of each of the adjusting steel ropes being connected to the plurality of the first connecting blocks in a one-to-one correspondence, and the other end of each of the adjusting steel ropes being provided with a second connecting block; A plurality of mounting blocks are arranged at intervals on the outer peripheral surface of the movable ring, and a plurality of the second connecting blocks are connected to the locking nuts after passing through the plurality of mounting blocks one by one.

[0016] The coal mine underground tunnel surrounding rock reinforcement grouting system provided by the present invention has the following effects: 1. The coal mine underground tunnel surrounding rock reinforcement grouting system of the present invention can facilitate the movement of the entire system in the tunnel through the mobile frame, the braking mechanism and the rollers arranged at the bottom of the mobile frame, and the braking mechanism can improve the stability of the system when it is working.

[0017] 2. The coal mine underground tunnel surrounding rock reinforcement grouting system of the present invention can facilitate the angle adjustment of the grouting pipe by setting a steering mechanism, so that the grouting pipe can be smoothly inserted into the drill hole, and at the same time, the connection pipe can be prevented from being entangled during the angle adjustment of the grouting pipe; 3. The coal mine underground tunnel surrounding rock reinforcement grouting system of the present invention can conveniently adjust the length of the grouting pipe by setting a grouting pipe length adjustment mechanism, so that the grouting nozzle can reach a suitable grouting position; 4. The coal mine underground tunnel surrounding rock reinforcement grouting system of the present invention, by providing a sealing mechanism and a power mechanism, can seal the drill hole when grouting is carried out through the drill hole, thereby facilitating the grouting liquid (such as cement slurry) to be better injected into the tunnel surrounding rock under pressure, thereby better completing the reinforcement work of the tunnel surrounding rock. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is one of the structural schematic diagrams of the surrounding rock reinforcement grouting system of the underground coal mine tunnel provided by the present invention.

[0020] Figure 2 This is the second structural schematic diagram of the surrounding rock reinforcement grouting system for underground coal mine tunnels provided by the present invention.

[0021] Figure 3 This is the third structural schematic diagram of the surrounding rock reinforcement grouting system for underground coal mine tunnels provided by the present invention.

[0022] Figure 4 This is one of the structural schematic diagrams of the steering mechanism and the grouting pipe mechanism provided by the present invention.

[0023] Figure 5 This is the second structural schematic diagram of the steering mechanism and the grouting pipe mechanism provided by the present invention.

[0024] Figure 6 It is a structural schematic diagram of the steering mechanism provided by the present invention.

[0025] Figure 7 It is a structural schematic diagram of the grouting pipe length adjustment mechanism provided by the present invention.

[0026] Figure 8 It is one of the structural schematic diagrams of the grouting pipe mechanism, the plugging mechanism and the power mechanism provided by the present invention.

[0027] Fig. 9 It is one of the structural schematic diagrams of the grouting pipe mechanism, the plugging mechanism and the power mechanism provided by the present invention.

[0028] Fig.10 It is one of the structural schematic diagrams of the blocking mechanism and the power mechanism provided by the present invention.

[0029] Fig.11 This is the second structural schematic diagram of the blocking mechanism and the power mechanism provided by the present invention.

[0030] Fig.12 It is one of the structural schematic diagrams of the blocking mechanism provided by the present invention.

[0031] Fig.13 It is one of the structural schematic diagrams of the blocking mechanism provided by the present invention.

[0032] Reference numerals: 1. Mobile frame; 2. Mounting plate; 3. Steering mechanism; 301. Rotating gear plate; 302. Gear; 303. Motor; 304. Mounting hole; 305. Fixed sleeve; 306. Limit block; 307. Fixed plate; 308. Rotating sleeve; 4. Grouting pipe mechanism; 401. Fixed pipe; 402. Adjusting pipe; 403. Grouting nozzle; 404. Positioning ring; 5. Grouting pipe length adjustment mechanism; 501. Telescopic hydraulic cylinder; 502. Support plate; 503. Through hole; 504. Vertical plate; 505. Internal threaded pipe; 506. Support screw; 507, arc-shaped brake block; 508, rotating block; 6, sealing mechanism; 601, moving ring; 602, first hinged rod; 603, second hinged rod; 604, fixed ring; 605, annular positioning groove; 606, expansion sealing ring; 607, inflation joint; 7, power mechanism; 701, adjusting screw; 702, rotating cylinder; 703, first connecting block; 704, adjusting steel rope; 705, second connecting block; 706, mounting block; 8, connecting pipe; 9, grouting pump; 10, mixing barrel; 11, brake mechanism. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are 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.

[0034] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limitations on the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0035] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0036] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0037] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0038] Combine the following Figure 1-Figure 13 The specific structure and working principle of the coal mine underground tunnel surrounding rock reinforcement grouting system of the present invention are described.

[0039] like Figures 1 to 3 As shown, the coal mine underground tunnel surrounding rock reinforcement grouting system includes a mixing barrel 10, a grouting pump 9, a mobile frame 1, a grouting pipe mechanism 4, a steering mechanism 3, a grouting pipe length adjustment mechanism 5, a blocking mechanism 6 and a power mechanism 7. The input port of the grouting pump 9 is connected to the mixing barrel 10, and the grouting pump 9 and the mixing barrel 10 are both arranged on the mobile frame 1; the grouting pipe mechanism 4 is connected to the output port of the grouting pump 9, and the grouting pipe mechanism 4 is used to grout into the borehole. The steering mechanism 3 is connected to the grouting pipe mechanism 4, and the steering mechanism 3 is used to adjust the angle of the grouting pipe mechanism 4 so that the grouting pipe mechanism 4 is aligned with the borehole; the grouting pipe length adjustment mechanism 5 is connected to the steering mechanism 3 and the grouting pipe mechanism 4, and the grouting pipe length adjustment mechanism 5 is used to adjust the length of the grouting pipe mechanism 4; the plugging mechanism 6 is sleeved on the outer periphery of the grouting pipe mechanism 4, and the plugging mechanism 6 is used to plug the borehole when grouting is performed in the borehole through the grouting pipe mechanism 4, the power mechanism 7 is connected to the grouting pipe length adjustment mechanism 5, and the power mechanism 7 is connected to the plugging mechanism 6.

[0040] In one embodiment of the present invention, the mobile frame 1 is a plate-like structure, and rollers and brake plates are provided at the bottom of the mobile frame 1. There are four rollers, and the rollers are rotatably matched with the mobile frame 1. The provision of the rollers can facilitate the movement of the mobile frame 1.

[0041] The mobile frame 1 is provided with a lifting hydraulic cylinder, and the telescopic rod of the lifting hydraulic cylinder passes through the mobile frame 1 and is connected to the brake plate. Specifically, two lifting hydraulic cylinders are provided, and the two lifting hydraulic cylinders are arranged side by side. When the mobile frame 1 reaches the predetermined position, the telescopic rod of the lifting hydraulic cylinder is extended, so that the brake plate contacts the ground, and the mobile frame 1 is lifted, so that the roller is separated from the ground. The coal mine underground tunnel surrounding rock reinforcement grouting system of the present invention, through the mobile frame 1, the braking mechanism 11 and the rollers arranged at the bottom of the mobile frame 1, can facilitate the movement of the entire system in the tunnel, and the braking mechanism 11 can improve the stability of the system when it is working.

[0042] In one embodiment of the present invention, two mounting plates 2 are spaced apart on the upper portion of the mobile frame 1 . The two mounting plates 2 are vertically arranged, and the steering mechanism 3 is rotatably matched with the two mounting plates 2 .

[0043] In one embodiment of the present invention, Figures 4 to 6 As shown, the steering mechanism 3 includes a rotating toothed disc 301, a gear 302 and a motor 303. The rotating toothed disc 301 is arranged between the two mounting plates 2. The rotating toothed disc 301 rotates with the two mounting plates 2 through a rotating shaft. The rotating toothed disc 301 is provided with a mounting hole 304, and the mounting hole 304 forms an opening at the edge of the rotating toothed disc 301; the gear 302 is meshed with the rotating toothed disc 301. The motor 303 is arranged on one side of one of the mounting plates 2 away from the rotating toothed disc 301, and the rotating shaft of the motor 303 is fixedly connected with the gear 302. When the motor 303 rotates, the motor 303 drives the gear 302 to rotate, the gear 302 drives the rotating toothed disc 301 to rotate, and the rotating toothed disc 301 rotates to drive the grouting pipe mechanism 4 to rotate, so as to adjust the angle of the grouting pipe mechanism 4 so that the grouting pipe mechanism 4 is aligned with the drilled hole.

[0044] Preferably, both sides of the opening of the mounting hole 304 are provided with limit blocks 306, and the limit blocks 306 are welded or integrally formed with the rotating gear disc 301. When the rotating gear disc 301 rotates until the limit blocks 306 contact the gear 302, the motor 303 stops rotating.

[0045] Preferably, a fixed disk 307 is provided on one side of the mounting plate 2 away from the rotating toothed disk 301, and a rotating sleeve 308 rotatably matched with the fixed disk 307 is provided on one side of the fixed disk 307 away from the mounting plate 2, and the rotating sleeve 308 is coaxially arranged with the rotating shaft of the rotating toothed disk 301, and the rotating sleeve 308 is sleeved on the connecting tube 8. When the rotating toothed disk 301 rotates, the rotating toothed disk 301 drives the rotating sleeve 308 to rotate, and then drives the connecting tube 8 to rotate, so as to prevent the connecting tube 8 from being entangled.

[0046] The coal mine underground tunnel surrounding rock reinforcement grouting system of the present invention can facilitate the angle adjustment of the grouting pipe by setting the steering mechanism 3, so that the grouting pipe can be smoothly inserted into the drill hole, and at the same time, the connecting pipe 8 can be prevented from being entangled during the angle adjustment of the grouting pipe.

[0047] In one embodiment of the present invention, Figure 8 and Fig. 9 As shown, the grouting pipe mechanism 4 includes a fixed pipe 401, a plurality of adjusting pipes 402 and a grouting nozzle 403. The fixed sleeve 305 is fixedly connected to the rotating gear disc 301. The fixed sleeve 305 is arranged in the mounting hole 304. The fixed pipe 401 is sleeved inside the fixed sleeve 305. One end of the fixed pipe 401 is connected to the output port of the grouting pump 9 through the connecting pipe 8. The plurality of adjusting pipes 402 are connected end to end in sequence, wherein the adjusting pipe 402 at the end is connected to the other end of the fixed pipe 401, and the grouting nozzle 403 is connected to the adjusting pipe 402 at the head end. The fixed pipe 401 and the adjusting pipe 402 and the adjusting pipe 402 and the grouting nozzle 403 are sealed and connected by means of clamping or threaded matching. A positioning ring 404 is arranged on the outer peripheral surface of each adjusting pipe 402, and the adjusting pipe 402 at the tail abuts against the top inner wall of the annular positioning groove 605 to form a limit.

[0048] In one embodiment of the present invention, Figure 7 As shown, the grouting pipe length adjustment mechanism 5 includes a support plate 502, a telescopic hydraulic cylinder 501 and a clamping assembly. The support plate 502 is provided with a through hole 503. The support plate 502 is annular and sleeved on the outer periphery of the adjustment pipe 402. The telescopic rod of the telescopic hydraulic cylinder 501 is connected to the support plate 502, and the cylinder body of the telescopic hydraulic cylinder 501 is connected to the rotating gear disc 301; preferably, two telescopic hydraulic cylinders 501 are provided, and the two telescopic hydraulic cylinders 501 are symmetrically arranged. The clamping assembly is arranged on the support plate 502, and the clamping assembly is used to clamp or release the adjustment pipe 402.

[0049] The coal mine underground tunnel surrounding rock reinforcement grouting system of the present invention can conveniently adjust the length of the grouting pipe by providing a grouting pipe length adjustment mechanism 5, so that the grouting nozzle 403 can reach a suitable grouting position.

[0050] In one embodiment of the present invention, Figure 7As shown, the clamping assembly includes two clamping parts, which are symmetrically arranged at the edge of the through hole 503. The clamping parts include a vertical plate 504, an internally threaded tube 505, a support screw 506, a rotating block 508 and an arc-shaped brake block 507. The vertical plate 504 is connected to the support plate 502. Specifically, the vertical plate 504 and the support plate 502 are welded or integrally formed. The internally threaded tube 505 runs through the vertical plate 504, and the internally threaded tube 505 is arranged horizontally. The support screw 506 is threadedly matched with the internally threaded tube 505. The end of the support screw 506 away from the adjustment tube 402 is connected to the rotating block 508, and the end of the support screw 506 close to the adjustment tube 402 is connected to the arc-shaped brake block 507. The side of the arc-shaped brake block 507 facing the adjustment tube 402 is an arc surface, and the curvature of the arc surface is adapted to the size of the adjustment tube 402. Preferably, the arc-shaped brake block 507 is rotationally matched with the end of the support screw 506 close to the adjustment tube 402. When the rotating block 508 is rotated, the rotating block 508 drives the supporting screw 506 to rotate, driving the two arc-shaped brake blocks 507 to move closer to or away from each other, thereby clamping or releasing the adjusting tube 402 .

[0051] In one embodiment of the present invention, Figures 8 to 13 As shown, the plugging mechanism 6 includes an expansion plugging ring 606, a moving ring 601, a fixed ring 604 and a plurality of connecting rods. The expansion plugging ring 606 can be expanded or contracted. The expansion plugging ring 606 is sleeved on the outer periphery of the adjusting tube 402. The moving ring 601 is sleeved on the outer periphery of the adjusting tube 402. The moving ring 601 is located between the expansion plugging ring 606 and the support plate 502. The fixed ring 604 is sleeved on the outer periphery of the adjusting tube 402. The fixed ring 604 is located between the moving ring 601 and the support plate 502. The outer periphery of the adjusting tube 402 is provided with a positioning ring 404, and the fixed ring 604 abuts against the positioning ring 404. Multiple connecting rods are arranged at intervals along the circumferential direction on the outer circumference of the adjusting tube 402, and the connecting rods include a first hinged rod 602 and a second hinged rod 603. One end of the first hinged rod 602 is hinged to the movable ring 601, the other end of the first hinged rod 602 is hinged to one end of the second hinged rod 603, and the other end of the second hinged rod 603 is hinged to the fixed ring 604.

[0052] Preferably, an annular positioning groove 605 is formed at the bottom of the fixing ring 604 , and the annular positioning groove 605 is used for positioning and cooperating with the positioning ring 404 .

[0053] In one embodiment of the present invention, the expansion sealing ring 606 has a cavity inside, and the expansion sealing ring 606 is provided with an inflation joint 607 communicating with the cavity.

[0054] In one embodiment of the present invention, Fig.10 and Fig.11As shown, the power mechanism 7 includes an adjusting screw 701, a rotating cylinder 702, a first connecting block 703, an adjusting steel rope 704 and a mounting block 706. A plurality of adjusting screws 701 are arranged at intervals on the edge of the through hole 503. A plurality of rotating cylinders 702 are threadedly matched with a plurality of adjusting screws 701 in a one-to-one correspondence, and the outer side of the rotating cylinder 702 is arranged in a regular hexagon. A plurality of first connecting blocks 703 are arranged in a one-to-one correspondence at one end of the plurality of rotating cylinders 702 away from the support plate 502, and the first connecting block 703 is rotationally matched with the rotating cylinder 702. One end of a plurality of adjusting steel ropes 704 is connected to a plurality of first connecting blocks 703 in a one-to-one correspondence, and a second connecting block 705 is arranged at the other end of each adjusting steel rope 704. Multiple mounting blocks 706 are arranged at intervals on the outer peripheral surface of the movable ring 601, and a mounting hole 304 is opened on the top of the mounting block 706. Multiple second connecting blocks 705 pass through the multiple mounting blocks 706 one by one and are connected to the locking nut, and the bottom of the locking nut is in contact with the top of the mounting block 706.

[0055] The coal mine underground tunnel surrounding rock reinforcement grouting system of the present invention, by providing a sealing mechanism 6 and a power mechanism 7, can seal the drill hole when grouting is performed through the drill hole, thereby facilitating the grouting liquid (such as cement slurry) to be better injected into the tunnel surrounding rock under pressure, thereby better completing the reinforcement work of the tunnel surrounding rock.

[0056] The working principle of the surrounding rock reinforcement grouting system of underground coal mine tunnels is as follows: When it is necessary to reinforce the surrounding rock of the underground coal mine tunnel, first use a drilling rig to drill the required reinforced holes in the surrounding rock of the underground coal mine tunnel, then move the entire system to the required position through the mobile frame 1, and then start the motor 303, the motor 303 drives the gear 302 to rotate, the gear 302 drives the rotating toothed disc 301 to rotate, the rotating toothed disc 301 drives the fixed sleeve 305 to rotate, and the fixed sleeve 305 drives the grouting pipe mechanism 4 to rotate, until the grouting pipe mechanism 4 is aligned with the drill hole, and then the motor 303 is turned off.

[0057] Then, according to the depth of the drilled hole, the number of adjusting tubes 402 is set to adjust the length of the grouting tube mechanism 4, so that the grouting nozzle 403 of the grouting tube mechanism 4 reaches the desired position. In this process, when increasing or decreasing the adjusting tube 402, the rotating block is first rotated, and the rotating block drives the support screw 506 to rotate relative to the internal threaded tube 505, and the support screw 506 pushes the arc brake block 507 to move, so that the two arc brake blocks 507 approach each other and finally clamp the adjusting tube 402 at the bottom. At this time, the connection between the adjusting tube 402 at the bottom and the fixed tube 401 is disconnected, and then the hydraulic cylinder 501 is started, and the hydraulic cylinder 501 pushes the support plate 502 to move upward, and the support plate 502 pushes the vertical plate 504 to move, and the vertical plate 504 finally drives more through the internal threaded tube 505, the support screw 506 and the arc brake block 507 The adjusting tube 402 and the grouting nozzle 403 move upward until the hydraulic cylinder 501 is extended to the maximum value, the hydraulic cylinder 501 is closed, and then the operator takes out a new adjusting tube 402, first connects the prepared adjusting tube 402 with the bottom end of the adjusting tube 402 clamped between the two arc-shaped brake blocks 507, and then reversely starts the hydraulic cylinder 501 until the newly taken out adjusting tube 402 contacts the fixed tube 401, closes the hydraulic cylinder 501, and then after the newly taken out adjusting tube 402 is connected with the fixed tube 401, reversely rotates the support screw 506 until the arc-shaped brake block 507 is out of contact with the adjusting screw 402, restarts the hydraulic cylinder 501, resets the support plate 502, and then continues to install the above steps to add a new adjusting tube 402 until the length of the grouting tube mechanism 4 meets the required grouting requirements.

[0058] Before connecting the last new regulating tube 402 with the previous regulating tube 402, first put the sealing mechanism 6 on its outside, and then connect the new regulating tube 402 with the previous regulating tube 402 according to the above steps, and connect the new regulating tube 402 with the fixed tube 401, and then connect the inflation interface 607 to the high-pressure air pump through an air pipe.

[0059] Then, the second connecting block 705 on the adjusting steel rope 704 in the power mechanism 7 is installed on the mounting block 706 through the locking nut. When the grouting nozzle 403 reaches a suitable position, the rotating cylinder 702 is sleeved on the adjusting screw 701, and then the rotating cylinder 702 is rotated with a wrench. The rotating cylinder 702 drives the moving ring 601 to move downward through the first connecting block 703, the adjusting steel rope 704, the second connecting block 705 and the mounting block 706, and the moving ring 601 drives the first hinged rod 602 to move, so that The first hinged rod 602 and the second hinged rod 602 are folded until one end of the first hinged rod 602 and the second hinged rod 603 are hinged to contact the inner wall of the borehole. At this time, the rotation of the rotating cylinder 702 is stopped. At this time, the expansion sealing ring 606 is pushed to a horizontal position, and then the expansion sealing ring 606 is inflated by a high-pressure air pump until the inner wall of the expansion sealing ring 606 contacts the adjusting tube 402, and the outer wall of the expansion sealing ring 606 is in close contact with the inner wall of the borehole. At this time, the sealing work before drilling and grouting is completed.

[0060] Finally, the grouting pump 9 can be started to pump the grouting liquid (such as cement slurry) in the mixing barrel 10 into the connecting pipe 8, and finally spray it into the borehole through the grouting pipe 4, thereby realizing the grouting reinforcement work of the surrounding rock of the underground coal mine tunnel.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A coal mine underground tunnel surrounding rock reinforcement grouting system, characterized in that: include: Mixing bucket (10); A grouting pump (9), wherein an input port of the grouting pump (9) is connected to the mixing barrel (10); A mobile frame (1), the grouting pump (9) and the mixing barrel (10) are both arranged on the mobile frame (1); A grouting pipe mechanism (4), the grouting pipe mechanism (4) being connected to an output port of the grouting pump (9), and the grouting pipe mechanism (4) being used for grouting into the borehole; A steering mechanism (3), the steering mechanism (3) being connected to the grouting pipe mechanism (4), the steering mechanism (3) being used to adjust the angle of the grouting pipe mechanism (4) so ​​that the grouting pipe mechanism (4) is aligned with the drill hole; A grouting pipe length adjustment mechanism (5), the grouting pipe length adjustment mechanism (5) being connected to the steering mechanism (3) and the grouting pipe mechanism (4), the grouting pipe length adjustment mechanism (5) being used to adjust the length of the grouting pipe mechanism (4); A plugging mechanism (6), the plugging mechanism (6) being sleeved on the outer circumference of the grouting pipe mechanism (4), the plugging mechanism (6) being used to plug the borehole when grouting is performed in the borehole through the grouting pipe mechanism (4); The power mechanism (7) is connected to the grouting pipe length adjustment mechanism (5), and the power mechanism (7) is connected to the blocking mechanism (6).

2. The coal mine underground tunnel surrounding rock reinforcement grouting system according to claim 1 is characterized in that: The bottom of the mobile frame (1) is provided with a roller and a brake plate, and the mobile frame (1) is provided with a lifting hydraulic cylinder, and the telescopic rod of the lifting hydraulic cylinder passes through the mobile frame (1) and is connected to the brake plate.

3. The coal mine underground tunnel surrounding rock reinforcement grouting system according to claim 1, characterized in that: Two mounting plates (2) are spaced apart on the upper part of the movable frame (1), and the steering mechanism (3) is rotatably matched with the two mounting plates (2).

4. The coal mine underground tunnel surrounding rock reinforcement grouting system according to claim 3, characterized in that: The steering mechanism (3) comprises: A rotating toothed disc (301) is arranged between the two mounting plates (2); the rotating toothed disc (301) is rotationally matched with the two mounting plates (2) via a rotating shaft; the rotating toothed disc (301) is provided with a mounting hole (304); and the mounting hole (304) forms an opening at the edge of the rotating toothed disc (301); A gear (302), the gear (302) meshing with the rotating gear disc (301); A motor (303), the motor (303) being arranged on a side of one of the mounting plates (2) away from the rotating toothed disc (301), and the rotating shaft of the motor (303) being fixedly connected to the gear (302).

5. The coal mine underground tunnel surrounding rock reinforcement grouting system according to claim 4, characterized in that: The grouting pipe mechanism (4) comprises: A fixed pipe (401), wherein a fixed sleeve (305) is arranged in the mounting hole (304), the fixed pipe (401) is sleeved inside the fixed sleeve (305), and one end of the fixed pipe (401) is connected to the output port of the grouting pump (9) via a connecting pipe (8); a plurality of regulating tubes (402), wherein the plurality of regulating tubes (402) are connected end to end in sequence, wherein the regulating tube (402) at the end is connected to the other end of the fixed tube (401); The grouting nozzle (403) is connected to the regulating pipe (402) located at the head end.

6. The coal mine underground tunnel surrounding rock reinforcement grouting system according to claim 5, characterized in that: The grouting pipe length adjustment mechanism (5) comprises: A support plate (502), the support plate (502) being provided with a through hole (503), and the support plate (502) being sleeved on the outer circumference of the regulating tube (402); A telescopic hydraulic cylinder (501), the telescopic rod of the telescopic hydraulic cylinder (501) being connected to the support plate (502), and the cylinder body of the telescopic hydraulic cylinder (501) being connected to the rotating gear disc (301); A clamping assembly is arranged on the support plate (502), and the clamping assembly is used to clamp or loosen the regulating tube (402).

7. The coal mine underground tunnel surrounding rock reinforcement grouting system according to claim 6, characterized in that: The clamping assembly comprises: Two clamping components, the two clamping components are symmetrically arranged at the edge of the through hole (503), the clamping components include a vertical plate (504), an internally threaded tube (505), a support screw (506), a rotating block (508) and an arc-shaped brake block (507), the vertical plate (504) is connected to the support plate (502), the internally threaded tube (505) passes through the vertical plate (504), the support screw (506) is threadedly matched with the internally threaded tube (505), one end of the support screw (506) away from the adjusting tube (402) is connected to the rotating block (508), and one end of the support screw (506) close to the adjusting tube (402) is connected to the arc-shaped brake block (507).

8. The coal mine underground tunnel surrounding rock reinforcement grouting system according to claim 6, characterized in that: The blocking mechanism (6) comprises: An expansion sealing ring (606), the expansion sealing ring (606) being sleeved on the outer circumference of the regulating tube (402); A moving ring (601), the moving ring (601) being sleeved on the outer circumference of the regulating tube (402), the moving ring (601) being located between the expansion sealing ring (606) and the support plate (502); a fixed ring (604), the fixed ring (604) being sleeved on the outer circumference of the adjusting tube (402), the fixed ring (604) being located between the moving ring (601) and the supporting plate (502), a positioning ring (404) being provided on the outer circumference of the adjusting tube (402), the fixed ring (604) being in abutment with the positioning ring (404); A plurality of connecting rods are arranged at intervals along the circumferential direction on the outer circumference of the adjusting tube (402), and the connecting rods include a first hinged rod (602) and a second hinged rod (603), one end of the first hinged rod (602) is hinged to the movable ring (601), the other end of the first hinged rod (602) is hinged to one end of the second hinged rod (603), and the other end of the second hinged rod (603) is hinged to the fixed ring (604).

9. The coal mine underground tunnel surrounding rock reinforcement grouting system according to claim 8, characterized in that: The expansion sealing ring (606) has a cavity inside, and the expansion sealing ring (606) is provided with an inflation joint (607) communicating with the cavity.

10. The coal mine underground tunnel surrounding rock reinforcement grouting system according to claim 8, characterized in that: The power mechanism (7) comprises: A plurality of adjusting screws (701), wherein the plurality of adjusting screws (701) are arranged at intervals on the edge of the through hole (503); A plurality of rotating cylinders (702), wherein the plurality of rotating cylinders (702) are threadably matched with the plurality of adjusting screws (701) in a one-to-one correspondence; a plurality of first connection blocks (703), the plurality of first connection blocks (703) being arranged one by one at one end of the plurality of rotating cylinders (702) away from the support plate (502), the first connection blocks (703) being rotationally matched with the rotating cylinders (702); a plurality of adjustment steel ropes (704), one end of each of the plurality of adjustment steel ropes (704) being connected to a plurality of the first connection blocks (703) in a one-to-one correspondence, and the other end of each of the adjustment steel ropes (704) being provided with a second connection block (705); A plurality of mounting blocks (706) are arranged at intervals on the outer peripheral surface of the movable ring (601); and a plurality of second connecting blocks (705) pass through the plurality of mounting blocks (706) one by one and are connected to the locking nut.

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