Tunnel grouting orifice sealing device

Abstract

The invention relates to the technical field of tunnel grouting protection, and provides a tunnel grouting orifice sealing device. Comprising a rubber sealing plug, a first mounting groove is formed in the rubber sealing plug, an adjusting assembly is arranged in the first mounting groove, an expansion assembly is arranged around the adjusting assembly, a plurality of T-shaped plates are arranged on the adjusting assembly in a circular array mode, and the T-shaped plates are slidably connected to the adjusting assembly; the multiple T-shaped plates make contact with the expansion assembly, an exhaust pipe is fixedly installed on the adjusting assembly and the expansion assembly in a penetrating mode, and a pressure gauge and a valve are installed on the transverse part of the exhaust pipe. The pressure meter on the exhaust pipe is used for observing the pressure in the sealing process at any time, and when the pressure rises rapidly, the valve on the exhaust pipe is manually opened, so that the pressure is released in time under the cooperation of the exhaust pipe and the air hole, the orifice sealing failure or guniting accidents caused by too high pressure are avoided, and the construction safety is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel grouting protection, and particularly to a tunnel grouting orifice sealing device. Background Art

[0002] Tunnel orifice grouting is a commonly used technical means in tunnel construction, mainly used for strengthening surrounding rocks, preventing seepage and blocking water. Tunnel grouting orifice sealing refers to a technical means of preventing grouting materials from leaking during the grouting process by installing a sealing device at the orifice to ensure the grouting effect. Specifically, the orifice-sealing grouting method is a method of installing an orifice pipe at the orifice of a drill hole and using an orifice sealer for grouting. This method is applicable to grouting construction under various geological conditions. Especially when dealing with complex geological structures, it can effectively control the flow of grouting materials and ensure the grouting effect.

[0003] It is known that Chinese Patent CN216305955U discloses a water conveyance tunnel grouting orifice sealing device, including a first sleeve. The lower surface of the first sleeve is fixedly connected to a second sleeve. A third sleeve is slidably sleeved inside the first sleeve. A first spring is welded to the inner bottom wall of the third sleeve. The top of the first spring is welded to a circular plate. The outer side wall of the circular plate is in movable contact with the inner side wall of the third sleeve. A first through hole is opened on the upper surface of the first sleeve. The inner side wall of the first through hole is in sliding contact with a first connecting plate. Through the elastic tensioning method, the present invention is convenient for quickly sealing the grouting orifice pipeline. And when plugging, by pressing to adjust the compression degree of the first spring, the plugging force can be conveniently adjusted according to actual needs, thereby improving the sealing effect and stability, reducing the risk of slurry leakage, and meeting the use requirements.

[0004] However, it is found that the above scheme has the following problems in the implementation of related technologies: It is impossible to discharge the pressure inside the orifice. Since during the grouting process, the pressure inside the hole may rise rapidly and exceed the safety range. Excessive pressure may cause the orifice seal to fail and even lead to serious safety accidents. In addition, in the prior art, the fixing method is single, the sealing effect is poor, and the sleeve is prone to fall off under the influence of the outside, which will affect the sealing process. Summary of the Invention

[0005] The present invention provides a tunnel grouting orifice sealing device, which solves the problems in the related technologies that the pressure inside the orifice cannot be discharged, resulting in the pressure inside the hole during the grouting process may rise rapidly and even exceed the safety range, leading to the failure of the orifice seal and even serious safety accidents, the fixing method is single, the sealing effect is poor, the sleeve is prone to fall off under the influence of the outside, and thus the sealing process will be affected. The technical solution of the present invention is as follows: A tunnel grouting orifice sealing device, including a rubber sealing plug, and a first installation groove is provided on the rubber sealing plug; An adjusting assembly is arranged inside the first installation groove, an expanding assembly is arranged on the adjusting assembly, a plurality of T-shaped plates are arranged around the adjusting assembly in a circular array form, and the plurality of T-shaped plates are all slidably connected to the adjusting assembly, and the plurality of T-shaped plates are all in contact with the expanding assembly; An exhaust pipe is fixedly installed through the adjusting assembly and the expanding assembly, and the exhaust pipe is in an L shape, and the longitudinal part of the exhaust pipe is inserted into the adjusting assembly and the expanding assembly; A fixed shell is arranged at the bottom of the rubber sealing plug, the transverse part of the exhaust pipe extends out of the fixed shell, a pressure gauge and a valve are installed on the transverse part of the exhaust pipe, two locking assemblies are symmetrically arranged on the fixed shell, and the fixed shell is fixedly installed on the orifice pipe through the locking assemblies; An extrusion assembly is arranged on the inner bottom wall of the fixed shell, and one side of the extrusion assembly abuts against the adjusting assembly.

[0006] Through the above technical solution, the pressure during the sealing process can be observed and relieved at any time, avoiding the failure of orifice sealing or grout spraying accidents caused by too high pressure, improving the construction safety, reducing material waste, saving costs, ensuring that the grout can uniformly penetrate into the rock mass fissures, improving the grouting effect and the quality of rock mass reinforcement, and at the same time, the rubber sealing plug can be fixed secondly, thereby improving the sealing effect.

[0007] Preferably, the adjusting assembly includes four first connecting rods arranged in a square arrangement in the first installation groove, and a first fixing plate is fixedly installed at the tops of the four first connecting rods together; A second fixing plate is fixedly installed at the bottoms of the four first connecting rods together, a first screw rod penetrates through the middle of the second fixing plate, the top of the first screw rod is rotatably connected to the first fixing plate, a turntable is fixedly installed at the bottom of the first screw rod, and one side of the extrusion assembly abuts against the turntable at the bottom of the first screw rod.

[0008] Through the above technical solution, the expanding assembly can be stably driven to move, thereby driving the T-shaped plates to expand and fixing the rubber sealing plug inserted into the orifice pipe.

[0009] Preferably, the expanding assembly includes a second connecting rod arranged between the first fixing plate and the second fixing plate, three pushing plates are fixedly installed on the outer side wall of the second connecting rod in sequence from top to bottom, and the three pushing plates are all threadedly connected to the first screw rod, and the sizes of the three pushing plates gradually decrease from top to bottom.

[0010] Through the above technical solution, it is possible to push the T-shaped plate outwards, expand the T-shaped plate outwards, and fix the rubber sealing plug inserted into the orifice pipe.

[0011] Preferably, a plurality of strip-shaped grooves are formed in a circular array at the bottom of the first fixing plate and the top of the second fixing plate. A second installation groove is formed on one side of each of the plurality of T-shaped plates. A pair of rollers are rotatably installed at the upper and lower ends of each of the plurality of second installation grooves, and the rollers are inserted into the strip-shaped grooves.

[0012] Through the above technical solution, the friction between the T-shaped plate and the first fixing plate and the second fixing plate can be reduced, so that the pushing plate can easily push the T-shaped plate to move and expand. At the same time, with the cooperation of the strip-shaped groove and the roller, the T-shaped plate can be limited, avoiding the position movement of the T-shaped plate in the first installation groove when the rubber sealing plug is inserted into the orifice pipe manually.

[0013] Preferably, a plurality of annular grooves are formed on the outer side wall of the rubber sealing plug, and the plurality of annular grooves are arranged in sequence from top to bottom.

[0014] Through the above technical solution, the friction and resistance between the rubber sealing plug and the orifice pipe can be increased, thereby preventing the rubber sealing plug from falling off from the orifice pipe.

[0015] Preferably, a plurality of fine air holes are formed at the top of the rubber sealing plug.

[0016] Through the above technical solution, it is ensured that the pressure in the orifice pipe can be transmitted to the first installation groove formed in the rubber sealing plug, and further ensured that the exhaust pipe can discharge the pressure in the orifice.

[0017] Preferably, the locking assembly includes a hand-tightening screw penetrating through the fixed shell, and the hand-tightening screw is threadedly connected to the fixed shell. An arc-shaped plate is rotatably installed at the screw end of the hand-tightening screw, and the side of the arc-shaped plate away from the hand-tightening screw is in contact with the orifice pipe.

[0018] Through the above technical solution, the fixed shell can be stably fixed on the orifice pipe.

[0019] Preferably, the extrusion assembly includes two telescopic rods symmetrically and fixedly installed on the inner bottom wall of the fixed shell. A squeezing plate is fixedly installed at the ends of the two telescopic rods away from the inner bottom wall of the fixed shell. Annular plates and springs are arranged on the outer side walls of the two telescopic rods, and the springs are located between the annular plates and the squeezing plate.

[0020] Through the above technical solution, the adjusting assembly and the rubber sealing plug can be extruded, and further the rubber sealing plug can be fixed secondly, improving the fixing and sealing effect.

[0021] Preferably, a second screw rod is penetratingly arranged in the middle of the inner bottom wall of the fixed shell, and the second screw rod is rotatably connected to the fixed shell. A fixing plate is sleeved on the two telescopic rods, and the fixing plate is located between the annular plate and the inner bottom wall of the fixed shell. The fixing plate is threadedly connected to the second screw rod.

[0022] Through the above technical solution, the elastic force of the spring can be adjusted so that the extrusion plate can stably abut against the rubber sealing plug.

[0023] Preferably, rubber pads are fixedly installed on one side of the extrusion plate and the locking assembly, and the rubber pad on the extrusion plate is in contact with the adjusting assembly, and the rubber pad on the locking assembly is in contact with the orifice tube.

[0024] Through the above technical solution, it can not only increase the friction and resistance between the arc plate and the orifice tube, but also increase the friction and resistance between the extrusion plate and the turntable, so that the adjusted first screw rod is not prone to self-rotation.

[0025] The working principle and beneficial effects of the present invention are as follows: The pressure during the closing process is observed at any time through the pressure gauge on the exhaust pipe. When the pressure rises rapidly, the valve on the exhaust pipe is manually opened. Thus, under the cooperation of the exhaust pipe and the vent holes, pressure relief can be carried out in a timely manner, thereby avoiding the failure of orifice closure or grout spraying accidents caused by excessive pressure, improving the construction safety, and at the same time ensuring that the grout can uniformly penetrate into the rock mass fissures, improving the grouting effect and the quality of rock mass reinforcement.

[0026] By manually rotating the adjusting assembly, the expanding assembly can push the T-shaped plate to move and expand the T-shaped plate, so as to initially fix the rubber sealing plug inserted into the orifice tube. Then, under the cooperation of the fixed shell, the locking assembly and the extrusion assembly, the rubber sealing plug is extruded, so as to perform secondary fixation on the rubber sealing plug, thereby improving the fixing and sealing effect.

[0027] Through the annular groove on the outer side wall of the rubber sealing plug, the friction and resistance between the rubber sealing plug and the orifice tube can be increased, thereby preventing the rubber sealing plug from falling off the orifice tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The following further describes the present invention in detail with reference to the drawings and specific embodiments.

[0029] Figure 1 It is a three-dimensional structural schematic diagram of the present invention from one perspective; Figure 2 It is a three-dimensional structural schematic diagram of the present invention from another perspective; Figure 3 A cross-sectional view of the present invention from one perspective; Figure 4 A cross-sectional view of the present invention from another perspective; Figure 5 An exploded schematic view of the adjustment assembly, expansion assembly, and T-shaped plate in the present invention; Figure 6 A cross-sectional view of the fixed shell, locking assembly, and extrusion assembly in the present invention; Figure 7 A schematic view of the structure of the rubber sealing plug in the present invention; Figure 8 A schematic view of the structure of the T-shaped plate in the present invention.

[0030] In the figure: 1, rubber sealing plug; 2, first installation groove; 3, adjustment assembly; 31, first connecting rod; 32, first fixing plate; 33, second fixing plate; 34, first screw; 4, expansion assembly; 41, second connecting rod; 42, pushing plate; 5, T-shaped plate; 6, exhaust pipe; 7, fixed shell; 8, locking assembly; 81, hand-tightening screw; 82, arc-shaped plate; 9, extrusion assembly; 91, telescopic rod; 92, extrusion plate; 93, annular plate; 94, spring; 10, second screw; 11, pressure gauge; 12, valve; 13, strip-shaped groove; 14, second installation groove; 15, roller; 16, annular groove; 17, ventilation hole; 18, rubber pad; 19, fixing plate. Detailed implementation manners

[0031] Next, in combination with the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0032] Embodiment 1: Please refer to Figures 1 to 8 , the embodiment of the present invention provides a tunnel grouting orifice sealing device, including a rubber sealing plug 1, and a first installation groove 2 is opened on the rubber sealing plug 1; A plurality of fine ventilation holes 17 are opened at the top of the rubber sealing plug 1; An adjusting component 3 is arranged inside the first installation groove 2, an expanding component 4 is arranged on the adjusting component 3, and a plurality of T-shaped plates 5 are arranged around the adjusting component 3 in a circular array form. The plurality of T-shaped plates 5 are all slidably connected to the adjusting component 3, and the plurality of T-shaped plates 5 are all in contact with the expanding component 4; An exhaust pipe 6 is fixedly installed through the adjusting component 3 and the expanding component 4, and the exhaust pipe 6 is in an L shape. The longitudinal part of the exhaust pipe 6 is inserted into the adjusting component 3 and the expanding component 4, and a pressure gauge 11 and a valve 12 are installed on the transverse part of the exhaust pipe 6.

[0033] When the tunnel grouting orifice sealing device provided by the embodiment of the present invention is in use, the thin end of the rubber sealing plug 1 is inserted into the orifice pipe, and then the adjusting component 3 is manually rotated, so that the adjusting component 3 can stably drive the expanding component 4 arranged thereon to move towards the thick end of the rubber sealing plug 1 under the limit cooperation of the exhaust pipe 6. Furthermore, the expanding component 4 can drive the T-shaped plates 5 to expand. After that, the expanded T-shaped plates 5 support the rubber sealing plug 1 outwards. Based on the deformation ability of the rubber sealing plug 1, the rubber sealing plug 1 can be fixed in the orifice pipe to seal the grouting orifice; during the sealing, the pressure during the sealing process can be observed at any time through the pressure gauge 11 on the exhaust pipe 6. When the pressure rises rapidly, the valve 12 on the exhaust pipe 6 is manually opened, so that under the cooperation of the exhaust pipe 6 and the ventilation holes 17, the pressure can be discharged in time, thereby avoiding the failure of orifice sealing or slurry spraying accidents caused by too high pressure, improving the construction safety, reducing material waste, saving costs, and at the same time ensuring that the slurry can uniformly penetrate into the rock mass fissures, improving the grouting effect and the quality of rock mass reinforcement.

[0034] In addition, it should be noted that: the longitudinal section of the T-shaped plate 5 is arc-shaped, so as to increase the contact area between the T-shaped plate 5 and the rubber sealing plug 1, and make the T-shaped plate 5 closely fit with the rubber sealing plug 1; the transverse section of the T-shaped plate 5 is isosceles trapezoid-shaped, ensuring that when the adjusting component 3 drives the expanding component 4 to expand and contract, the expanding component 4 moves linearly along the isosceles trapezoid section, and with the cooperation of the isosceles trapezoid section, the T-shaped plate 5 can be pushed outwards by the adjusting component 3 to expand.

[0035] Furthermore, the adjusting component 3 includes four first connecting rods 31 arranged in a square in the first installation groove 2. A first fixing plate 32 is fixedly installed at the tops of the four first connecting rods 31; a second fixing plate 33 is fixedly installed at the bottoms of the four first connecting rods 31. A first screw rod 34 is arranged through the middle of the second fixing plate 33, and the top of the first screw rod 34 is rotatably connected to the first fixing plate 32. A turntable is fixedly installed at the bottom of the first screw rod 34, and one side of the extrusion component 9 abuts against the turntable at the bottom of the first screw rod 34.

[0036] Specifically, through the first connecting rod 31, the first fixing plate 32 and the second fixing plate 33, the expansion assembly 4 has a certain telescopic space. Then, manually rotate the turntable of the first screw rod 34, so that, in cooperation with the exhaust pipe 6, it can stably drive the expansion assembly 4 to move on the first screw rod 34, and further drive the T-shaped plate 5 to expand, realizing the tight fixation of the rubber sealing plug 1 inserted into the orifice pipe.

[0037] Further, the expansion assembly 4 includes a second connecting rod 41 arranged between the first fixing plate 32 and the second fixing plate 33. Three push plates 42 are fixedly installed on the outer side wall of the second connecting rod 41 in sequence from top to bottom, and the three push plates 42 are all threadedly connected to the first screw rod 34. The sizes of the three push plates 42 decrease in sequence from top to bottom.

[0038] Specifically, through the second connecting rod 41, the three push plates 42 can be stably connected together. Then, when manually rotating the first screw rod 34, the first screw rod 34 can stably drive the three push plates 42 threadedly connected thereto to move, and further enable the push plates 42 to push the T-shaped plate 5 outwards, and then expand the T-shaped plate 5 outwards.

[0039] In addition, it should be noted that: circular holes communicating with each other are formed in all three push plates 42, and then the longitudinal part of the exhaust pipe 6 located in the first installation groove 2 is inserted into the circular holes, so as to ensure that when the first screw rod 34 drives the push plate 42 to move, the push plate 42 will not rotate along with the first screw rod 34.

[0040] Further, a plurality of strip-shaped grooves 13 are formed in the bottom of the first fixing plate 32 and the top of the second fixing plate 33 in a circular array form. A second installation groove 14 is formed in one side of each of the plurality of T-shaped plates 5. A pair of rollers 15 are rotatably installed at the upper and lower ends of each of the plurality of second installation grooves 14, and the rollers 15 are inserted into the strip-shaped grooves 13.

[0041] Specifically, by providing the rollers 15 and the strip-shaped grooves 13, the friction between the T-shaped plate 5 and the first fixing plate 32 and the second fixing plate 33 can be reduced, so that the push plate 42 can easily push the T-shaped plate 5 to move and expand. At the same time, with the cooperation of the strip-shaped grooves 13 and the rollers 15, the T-shaped plate 5 can be limited, avoiding the position movement of the T-shaped plate 5 in the first installation groove 2 when the rubber sealing plug 1 is inserted into the orifice pipe manually.

[0042] Further, a plurality of annular grooves 16 are formed in the outer side wall of the rubber sealing plug 1, and the plurality of annular grooves 16 are arranged in sequence from top to bottom.

[0043] Specifically, through the annular groove 16 on the outer sidewall of the rubber sealing plug 1, the friction and resistance between the rubber sealing plug 1 and the orifice tube can be increased, thereby preventing the rubber sealing plug 1 from falling off from the orifice tube.

[0044] Embodiment 2: Based on Embodiment 1, in this embodiment, a fixed shell 7 is provided at the bottom of the rubber sealing plug 1. The horizontal part of the exhaust pipe 6 extends out from the fixed shell 7. Two locking components 8 are symmetrically arranged on the fixed shell 7, and the fixed shell 7 is fixedly installed on the orifice tube through the locking components 8. An extrusion component 9 is arranged on the inner bottom wall of the fixed shell 7, and one side of the extrusion component 9 abuts against the adjustment component 3; the locking component 8 includes a hand-tightening screw 81 penetrating through the fixed shell 7, and the hand-tightening screw 81 is threadedly connected with the fixed shell 7. An arc-shaped plate 82 is rotatably installed on the screw rod end of the hand-tightening screw 81, and the side of the arc-shaped plate 82 away from the hand-tightening screw 81 contacts the orifice tube.

[0045] When the device provided in this embodiment is in use, the fixed shell 7 is inserted into the orifice tube manually, and then the hand-tightening screw 81 threadedly connected to the fixed shell 7 is rotated, so that the hand-tightening screw 81 can drive the arc-shaped plate 82 to move, and the side of the arc-shaped plate 82 away from the hand-tightening screw 81 contacts and presses against the outer sidewall of the orifice tube, thereby enabling the fixed shell 7 to be stably fixed on the orifice tube. Then, the extrusion component 9 in the fixed shell 7 extrudes the adjustment component 3 and the rubber sealing plug 1, so as to perform secondary fixation on the rubber sealing plug 1, thereby improving the fixed sealing effect.

[0046] Furthermore, the extrusion component 9 includes two telescopic rods 91 symmetrically and fixedly installed on the inner bottom wall of the fixed shell 7. The ends of the two telescopic rods 91 away from the inner bottom wall of the fixed shell 7 are jointly fixedly installed with an extrusion plate 92. Annular plates 93 and springs 94 are arranged on the outer sidewalls of the two telescopic rods 91, and the springs 94 are located between the annular plates 93 and the extrusion plate 92.

[0047] Specifically, the extrusion plate 92 is pushed by the thrust of the spring 94, so that the extrusion plate 92 can stably move under the action of the telescopic rod 91 and extrude the adjustment component 3 and the rubber sealing plug 1, thereby performing secondary fixation on the rubber sealing plug 1 and improving the fixed sealing effect.

[0048] In addition, it should be noted that the telescopic rod 91 is composed of an inner tube and an outer tube. The inner tube extends into the outer tube, and the outer tube is fixedly installed on the inner bottom wall of the fixed shell 7. The end of the inner tube away from the outer tube is fixedly connected to the extrusion plate 92, so as to ensure the stable performance of the extrusion plate 92 during movement. At the same time, when the spring 94 is compressed, it is not easy to bend, thereby ensuring that the spring 94 can stably push the extrusion plate 92.

[0049] Furthermore, a second screw rod 10 is penetratingly arranged in the middle of the inner bottom wall of the fixed shell 7, and the second screw rod 10 is rotatably connected to the fixed shell 7. A fixed plate 19 is sleeved on the two telescopic rods 91 together, and the fixed plate 19 is located between the annular plate 93 and the inner bottom wall of the fixed shell 7. The fixed plate 19 is threadedly connected to the second screw rod 10.

[0050] Specifically, by manually rotating the handwheel of the second screw rod 10, the second screw rod 10 can be driven to rotate. Then, the rotating second screw rod 10, with the cooperation of the telescopic rod 91, can stably drive the fixed plate 19 threadedly connected thereto to move, so that the fixed plate 19 can push the annular plate 93 at one end of the spring 94, and further the elastic force of the spring 94 can be adjusted, enabling the pressing plate 92 to stably press against the adjusting assembly 3 and the rubber sealing plug 1.

[0051] Furthermore, rubber pads 18 are fixedly installed on one side of both the pressing plate 92 and the locking assembly 8. The rubber pad 18 on the pressing plate 92 is in contact with the adjusting assembly 3, and the rubber pad 18 on the locking assembly 8 is in contact with the orifice tube.

[0052] Specifically, the rubber pad 18 on the locking assembly 8 can increase the friction and resistance between the arc-shaped plate 82 and the orifice tube. Then, through the rubber pad 18 on the pressing plate 92, the friction and resistance between the pressing plate 92 and the turntable can be increased, so that the adjusted first screw rod 34 is not prone to self-rotation.

[0053] The working principle and usage process of the present invention are as follows: Manually insert the thin end of the rubber sealing plug 1 into the orifice tube, and then manually rotate the first screw rod 34. Thus, with the cooperation of the exhaust pipe 6, the pushing disk 42 can be driven to move. Further, under the action of the rollers 15 and the strip-shaped grooves 13, the pushing disk 42 can stably drive the T-shaped plate 5 to expand, so that the rubber sealing plug 1 can be fixed in the orifice tube to seal the grouting orifice. At the same time, observe the pressure during the sealing process through the pressure gauge 11. When the pressure rises rapidly, manually open the valve 12. Thus, with the cooperation of the exhaust pipe 6 and the vent holes 17, the pressure can be discharged from the orifice. Then, manually insert the fixed shell 7 onto the orifice tube, and then rotate the hand-tightening screw 81 threadedly connected to the fixed shell 7. Thus, the hand-tightening screw 81 can drive the arc-shaped plate 82 to move and make the arc-shaped plate 82 contact and press against the outer side wall of the orifice tube. Further, the fixed shell 7 can be stably fixed on the orifice tube. Then, push the pressing plate 92 through the thrust of the spring 94. Thus, under the action of the telescopic rod 91, the pressing plate 92 can stably move and press against the adjusting assembly 3 and the rubber sealing plug 1, and further the rubber sealing plug 1 can be secondarily fixed to improve the fixing and sealing effect.

[0054] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A tunnel grouting hole sealing device, characterized in that: It comprises a rubber sealing plug (1), wherein the rubber sealing plug (1) is provided with a first mounting groove (2); An adjustment component (3) is arranged inside the first mounting groove (2), an expansion component (4) is arranged on the adjustment component (3), a plurality of T-shaped plates (5) are arranged in a circular array around the adjustment component (3), the plurality of T-shaped plates (5) are all slidably connected to the adjustment component (3), and the plurality of T-shaped plates (5) are all in contact with the expansion component (4); An exhaust pipe (6) is fixedly installed through the adjusting component (3) and the expansion component (4); the exhaust pipe (6) is L-shaped, and a longitudinal portion of the exhaust pipe (6) is plugged into the adjusting component (3) and the expansion component (4); A fixing shell (7) is arranged at the bottom of the rubber sealing plug (1), a transverse portion of the exhaust pipe (6) extends out from the fixing shell (7), a pressure gauge (11) and a valve (12) are installed on the transverse portion of the exhaust pipe (6), two locking assemblies (8) are symmetrically arranged on the fixing shell (7), and the fixing shell (7) is fixedly mounted on the orifice pipe via the locking assemblies (8); An extrusion component (9) is provided on the inner bottom wall of the fixed shell (7), and one side of the extrusion component (9) is in conflict with the adjustment component (3).

2. A tunnel grouting hole sealing device according to claim 1, characterized in that: The adjustment assembly (3) comprises four first connecting rods (31) arranged in a square shape in the first installation slot (2), and a first fixing plate (32) is fixedly mounted on the tops of the four first connecting rods (31); A second fixed disk (33) is fixedly mounted at the bottom of the four first connecting rods (31); a first screw rod (34) is provided through the middle of the second fixed disk (33); the top of the first screw rod (34) is rotatably connected to the first fixed disk (32); a rotating disk is fixedly mounted at the bottom of the first screw rod (34); and one side of the extrusion assembly (9) is in contact with the rotating disk at the bottom of the first screw rod (34).

3. A tunnel grouting hole sealing device according to claim 2, characterized in that: The expansion assembly (4) comprises a second connecting rod (41) arranged between the first fixed plate (32) and the second fixed plate (33), and three push plates (42) are fixedly mounted on the outer wall of the second connecting rod (41) in sequence from top to bottom, and the three push plates (42) are all threadedly connected to the first screw rod (34), and the sizes of the three push plates (42) are successively reduced from top to bottom.

4. A tunnel grouting hole sealing device according to claim 3, characterized in that: The bottom of the first fixed plate (32) and the top of the second fixed plate (33) are both provided with a plurality of strip grooves (13) in the form of a circular array, one side of each of the plurality of T-shaped plates (5) is provided with a second mounting groove (14), and a pair of rollers (15) are rotatably mounted at both upper and lower ends of each of the plurality of second mounting grooves (14), and the rollers (15) are plugged into the strip grooves (13).

5. A tunnel grouting hole sealing device according to claim 1, characterized in that: The outer side wall of the rubber sealing plug (1) is provided with a plurality of annular grooves (16), and the plurality of annular grooves (16) are arranged in sequence from top to bottom.

6. A tunnel grouting hole sealing device according to claim 1, characterized in that: The top of the rubber sealing plug (1) is provided with a plurality of fine air holes (17).

7. A tunnel grouting hole sealing device according to claim 1, characterized in that: The locking assembly (8) comprises a hand screw (81) which is arranged to penetrate the fixing shell (7), and the hand screw (81) is threadedly connected to the fixing shell (7). An arc plate (82) is rotatably mounted on the screw end of the hand screw (81), and a side of the arc plate (82) away from the hand screw (81) is in contact with the orifice tube.

8. A tunnel grouting hole sealing device according to claim 1, characterized in that: The extrusion assembly (9) comprises two telescopic rods (91) symmetrically fixedly mounted on the inner bottom wall of the fixed shell (7); an extrusion plate (92) is fixedly mounted on one end of the two telescopic rods (91) away from the inner bottom wall of the fixed shell (7); an annular plate (93) and a spring (94) are provided on the outer side walls of the two telescopic rods (91); and the spring (94) is located between the annular plate (93) and the extrusion plate (92).

9. A tunnel grouting hole sealing device according to claim 8, characterized in that: A second screw rod (10) is provided through the middle of the inner bottom wall of the fixed shell (7), and the second screw rod (10) is rotatably connected to the fixed shell (7). A fixing plate (19) is sleeved on the two telescopic rods (91), and the fixing plate (19) is located between the annular plate (93) and the inner bottom wall of the fixed shell (7), and the fixing plate (19) is threadedly connected to the second screw rod (10).

10. A tunnel grouting hole sealing device according to claim 8, characterized in that: A rubber pad (18) is fixedly mounted on one side of the extrusion plate (92) and the locking assembly (8), and the rubber pad (18) on the extrusion plate (92) is in contact with the adjustment assembly (3), and the rubber pad (18) on the locking assembly (8) is in contact with the orifice tube.

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