High-leakproofness leaking stoppage expansion plug for tunnel leaking stoppage

Abstract

The utility model relates to the technical field of tunnel leaking stoppage, in particular to a high-sealing-performance leaking stoppage expansion plug for tunnel leaking stoppage, which comprises a connecting pipe, and an inserting pipe is arranged below the connecting pipe. A groove is formed in the outer wall of the insertion pipe, an air bag is fixedly connected to the inner wall of the groove, the outer wall of the air bag is sleeved with a wear-resistant rubber sleeve, and when the connection pipe is connected with the insertion pipe, an annular piston at the bottom of a cylinder below the connection pipe slides into a piston groove to extrude air in the piston groove, and the air is extruded into the air bag; the air bag is expanded to fill the gap between the inner wall of the grouting hole and the pipeline, the air bag still keeps certain elasticity after being expanded, so that the pipe body adapts to the change of the hole diameter within a certain range, practicability is higher, the air bag is contained in the groove, and when the insertion pipe is inserted into the grouting hole, the wizened air bag does not rub with the inner wall of the grouting hole; and the condition of friction damage of the air bag caused by insertion is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to a tunnel leaking stoppage technical field, concretely is a kind of high sealing property leaking stoppage expansion plug for tunnel leaking stoppage. BACKGROUND

[0002] In the tunnel leaking stoppage process, insert expansion plug rubber ring position to leakage hole, then extrude rubber ring by upper fastening device, so that rubber ring deforms and expands, fills the gap between expansion plug and leakage hole position. It is mainly to use the characteristics of swelling when meeting water to plug the water channel on the tunnel wall. Its material is generally composed of high molecular polymer with water absorption and other components. When expansion plug contacts water, polymer molecular chain will absorb water molecules, so that the volume of itself expands, and then fills the gap, to achieve the purpose of water stopping and leaking stoppage.

[0003] Prior art such as publication number CN204849771U provides a grouting plug, including grouting pipe, leaking stoppage band and pre-grouting water guide pipe. Wherein, the grouting pipe is hollow pipe, the outer wall of the grouting pipe is provided with the leaking stoppage band;The leaking stoppage band is annular band structure, and the outer periphery of the grouting pipe is surrounded, the inner wall of the leaking stoppage band is in close contact with the outer wall of the grouting pipe;The pre-grouting water guide pipe is movably arranged in the gap formed between the outer wall of the grouting pipe and the inner wall of grouting hole, and points to the leaking stoppage band, for grouting water to the leaking stoppage band. The leaking stoppage band swells when meeting water to fill the gap formed between the outer wall of the grouting pipe and the inner wall of the grouting hole, and the leaking stoppage band and the inner wall of the grouting hole have great friction, enough to resist the impact force of the grouting material, effectively prevent the backflow of grouting material overflow;And the grouting plug does not need manual adjustment during grouting process, and the operation is more convenient.

[0004] In the scheme, the leaking stoppage band swelling when meeting water is wound on the outer wall of the grouting pipe, and the leaking stoppage band swelling when meeting water fills the gap between the grouting pipe and the inner wall of the grouting hole to prevent backflow overflow, but in prior art, appropriate expansion plug should be selected according to the diameter of grouting hole, if the size of expansion plug is too small, it may not be able to completely fill the grouting hole, resulting in poor leaking stoppage effect;If the size is too large, it may not be able to be inserted into grouting hole smoothly, or damage the wall of grouting hole in the expansion process.

[0005] In prior art, appropriate expansion plug should be selected according to the diameter of grouting hole, if the size of expansion plug is too small, it may not be able to completely fill the grouting hole, resulting in poor leaking stoppage effect;If the size is too large, it may not be able to be inserted into grouting hole smoothly, or damage the wall of grouting hole in the expansion process. In view of this, we propose a kind of high sealing property leaking stoppage expansion plug for tunnel leaking stoppage. UTILITY MODEL CONTENTS

[0006] The utility model discloses a high sealing leak stoppage expansion plug for tunnel leak stoppage, which solves the problems in the prior art.

[0007] To achieve the above object, the utility model provides the following technical scheme.

[0008] A high sealing leak stoppage expansion plug for tunnel leak stoppage, comprising a connecting pipe, wherein a pipe is arranged below the connecting pipe.

[0009] The outer wall of the pipe is provided with a groove, and the inner wall of the groove is fixedly connected with an air bag.

[0010] Preferably, the bottom of the connecting pipe is fixedly connected with a threaded head, and the threaded head is threadedly connected to the inner wall of the pipe through a threaded groove.

[0011] Preferably, the bottom of the threaded head is fixedly connected with a cylinder, the bottom of the cylinder is fixedly connected with an annular piston, the pipe is provided with a piston groove at a position corresponding to the annular piston, and the annular piston is slidably connected to the inner wall of the piston groove.

[0012] Preferably, the pipe is provided with a communication hole at a position below the piston groove, which is used for communicating the inside of the air bag.

[0013] Preferably, the threaded head is provided with an annular groove at a position between the inner circle and the outer circle of the cylinder, the inner wall of the annular groove is slidably connected with a pressing ring, and a spring is arranged between the annular groove and the pressing ring for supporting.

[0014] Preferably, the outer wall of the connecting pipe is provided with a power hole for inserting a power lever, and the top of the outer wall of the pipe is fixedly provided with a hexagonal supporting ring.

[0015] Preferably, an anti-skid pad is arranged at the joint of the connecting pipe and the pipe for increasing the friction.

[0016] Through the above technical scheme, the utility model provides a high sealing leak stoppage expansion plug for tunnel leak stoppage.

[0017] When the connecting pipe is connected with the insertion pipe, the annular piston at the bottom of the cylinder of the connecting pipe slides into the piston groove, which can extrude the air inside the piston groove, so that the air is extruded into the air bag, the air bag is inflated to fill the inner wall of the grouting hole and the gap of the pipeline, and after the air bag is inflated, the air bag still has a certain elasticity, so that the pipe body can adapt to the size change of the hole diameter within a certain range, the practicability is higher, and the deflated air bag will not rub against the inner wall of the grouting hole when the insertion pipe is inserted into the grouting hole in the mode that the air bag is accommodated in the groove, the friction damage of the air bag caused by insertion is avoided, and the air bag is provided with a wear-resistant rubber sleeve, which can be inflated together with the air bag, so that the air bag is protected and subsequent recycling and reuse are facilitated.

[0018] Secondly, the utility model discloses a mode that the abutting ring is arranged at the position of the thread head and the end face of the connecting pipe, so that after the thread head is tightened, the abutting ring will abut the position of the thread head and the end face of the connecting pipe under the action of the spring tension, to avoid that impurities enter the annular groove and affect the next use. BRIEF DESCRIPTION OF DRAWINGS

[0019] The drawings described herein are used to provide further understanding of the utility model and constitute a part of the application:

[0020] Figure 1 It is the whole structure schematic diagram of the utility model;

[0021] Figure 2 It is the partial sectional view of the utility model;

[0022] Figure 3 It is the structure schematic diagram of the connecting pipe in the utility model;

[0023] Figure 4 It is the structure schematic diagram of the insertion pipe in the utility model.

[0024] In the drawing: 1, connecting pipe;11, thread head;12, cylinder;13, annular piston;14, annular groove;15, abutting ring;16, spring;2, insertion pipe;21, thread groove;22, recess;23, air bag;24, wear-resistant rubber sleeve;25, piston groove;26, communication hole;3, power hole;4, hexagonal support ring;41, antiskid pad. PREFERRED EMBODIMENT

[0025] The technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0026] A kind of high sealing plugging expansion plug for tunnel leakage stop, such as Figure 1 Figure 4 As shown in the figure, it includes connector 1, the lower part of connector 1 is provided with cannula 2, the outer wall of cannula 2 is provided with recess 22, the inner wall of recess 22 is fixedly connected with air bag 23, the outer wall of air bag 23 is sleeved with wear-resistant rubber sleeve 24, the bottom of connector 1 is fixedly connected with threaded head 11, threaded head 11 is threadedly connected with the inner wall of cannula 2 through thread groove 21, the bottom of threaded head 11 is fixedly connected with cylinder 12, the bottom of cylinder 12 is fixedly connected with annular piston 13, piston groove 25 is opened in the position corresponding to annular piston 13 of cannula 2, annular piston 13 is slidably connected with the inner wall of piston groove 25, the position of cannula 2 at the bottom of piston groove 25 is provided with communication hole 26 for communicating the inside of air bag 23.

[0027] In the embodiment, by inserting cannula 2 into grouting hole first, and then screwing connector 1 into cannula 2, when connector 1 is connected with cannula 2, annular piston 13 at the bottom of cylinder 12 below connector 1 slides into piston groove 25, which will squeeze the air in piston groove 25, and the air will be squeezed into air bag 23, so that air bag 23 expands to fill the gap between the inner wall of grouting hole and pipeline. Since air bag 23 still maintains a certain elasticity after expansion, the pipe body can adapt to the size change of the hole diameter within a certain range, which is more practical. Moreover, by accommodating air bag 23 in recess 22, when cannula 2 is inserted into grouting hole, shriveled air bag 23 will not rub against the inner wall of grouting hole, avoiding the situation that air bag 23 is damaged due to insertion. In addition, wear-resistant rubber sleeve 24 is sleeved on the surface of air bag 23, which can expand together with air bag 23, so as to protect air bag 23 and facilitate subsequent recycling and reuse.

[0028] As shown in the figure, Figure 3 Preferably, annular groove 14 is opened in the position where the bottom of threaded head 11 is located between the inner circle and the outer circle of cylinder 12, annular groove 14 is slidably connected with abutting ring 15, and spring 16 for supporting is arranged between annular groove 14 and abutting ring 15.

[0029] In the embodiment, by arranging abutting ring 15 in the position where threaded head 11 and the end face of connector 1 are attached, after threaded head 11 is tightened, abutting ring 15 will abut against the position where threaded head 11 and the end face of connector 1 are attached under the action of the tension of spring 16, so as to avoid impurities entering annular groove 14 and affecting the next use.

[0030] As shown in the figure, Figure 1 Preferably, the outer wall of connector 1 is provided with power hole 3 for inserting power lever, the top of the outer wall of cannula 2 is fixedly sleeved with hexagonal collar 4, and anti-skid pad 41 is arranged at the joint of connector 1 and cannula 2 for increasing friction.

[0031] ​In this embodiment, the lever is inserted into the force assisting hole 3 on the connecting pipe 1 to facilitate the tightening of the connecting pipe 1, and the insertion pipe 2 can be positioned by clamping the hexagonal retainer ring 4 with the handle.

[0032] The high sealing plugging expansion plug for tunnel plugging in the utility model is used, the insertion pipe 2 is first inserted into the grouting hole, then the connecting pipe 1 is screwed into the insertion pipe 2, the lever is inserted into the force assisting hole 3 on the connecting pipe 1 to facilitate the tightening of the connecting pipe 1, the insertion pipe 2 can be positioned by clamping the hexagonal retainer ring 4 with the handle, when the connecting pipe 1 is connected with the insertion pipe 2, the annular piston 13 at the bottom of the cylinder 12 below the connecting pipe 1 slides into the piston groove 25, which will extrude the air inside the piston groove 25, the air is extruded into the air bag 23, the air bag 23 is inflated to fill the grouting hole inner wall and the pipeline gap, after the inflation of the air bag 23, the pipe body can adapt to the size change of the hole diameter within a certain range, the utility is stronger, and the air bag 23 is accommodated in the groove 22, when the insertion pipe 2 is inserted into the grouting hole, the deflated air bag 23 will not rub against the grouting hole inner wall, the friction damage of the air bag 23 caused by insertion is avoided, and the abutting ring 15 is arranged at the position of the abutting end face of the threaded head 11 and the connecting pipe 1, so that the abutting ring 15 will abut against the position of the abutting end face of the threaded head 11 and the connecting pipe 1 under the tension of the spring 16 after the threaded head 11 is tightened, so as to avoid the impurities from entering the annular groove 14 to affect the next use.

[0033] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0034] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A high sealing plugging and expanding plug for tunnel leakage, comprising a connector (1), characterized in that: The lower part of the connecting pipe (1) is provided with a cannula (2); The outer wall of the cannula (2) is provided with a groove (22), the inner wall of the groove (22) is fixedly connected with an air bag (23), and the outer wall of the air bag (23) is sleeved with a wear-resistant rubber sleeve (24).

2. A high sealing plugging and expanding plug for tunnel leakage according to claim 1, characterized in that: The bottom of the connecting pipe (1) is fixedly connected with a threaded head (11), and the threaded head (11) is threadedly connected with the inner wall of the cannula (2) through a threaded groove (21).

3. A high sealing plugging and expanding plug for tunnel leakage according to claim 2, characterized in that: The bottom of the threaded head (11) is fixedly connected with a cylinder (12), the bottom of the cylinder (12) is fixedly connected with an annular piston (13), the cannula (2) is provided with a piston groove (25) corresponding to the position of the annular piston (13), and the inner wall of the annular piston (13) and the piston groove (25) is in sliding connection.

4. The high sealing plugging and expanding plug for tunnel leakage stopping according to claim 3, characterized in that: The cannula (2) is provided with a communication hole (26) at the position of the bottom of the piston groove (25), which is used for communicating the inside of the air bag (23).

5. The high sealing plugging and expanding plug for tunnel leakage stopping according to claim 3, characterized in that: The bottom of the threaded head (11) is provided with an annular groove (14) at the position of the inner and outer circles of the cylinder (12), the inner wall of the annular groove (14) is in sliding connection with a pressing ring (15), and a spring (16) is arranged between the annular groove (14) and the pressing ring (15) for supporting.

6. The high sealing plugging and expanding plug for tunnel leakage stopping according to claim 1, characterized in that: The outer wall of the connecting pipe (1) is provided with a force hole (3) for inserting a force lever, and the top of the outer wall of the cannula (2) is fixedly sleeved with a hexagonal lug (4).

7. A high sealing plugging and expanding plug for tunnel leakage according to claim 6, characterized in that: The joint of the connecting pipe (1) and the cannula (2) is provided with a non-slip pad (41) for increasing friction.

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