Municipal road drainage pipeline air bag plugging device

Abstract

The utility model discloses a municipal road drainage pipeline air bag plugging device which comprises a shell, an air bag is fixedly connected to the end of the left side of the shell, deviation preventing assemblies used for clamping the air bag so as to prevent the air bag from deviating are arranged at the two ends of the left side of the shell, and a fixing block is fixedly connected to the end of the right side of the shell. Through the arrangement of the anti-deviation assembly and the elastic pushing assembly and the two sets of arc-shaped clamping plates installed at the end of the left side of the shell, the air bag is positioned from the two sides, when the air bag is impacted by water flow, position deviation of the air bag can be effectively avoided, and in addition, the elastic pushing assembly can push the air bag to move, so that the safety of the air bag is improved. The clamping force of the arc-shaped clamping plates on the air bag has certain elasticity, when the air bag is inflated and expands, the clamping force can be adjusted in a self-adaptive mode, it is guaranteed that the air bag does not deviate, and the air bag cannot be damaged due to the too large clamping force.

Description

Technical Field

[0001] This utility model relates to the technical field of airbag sealing devices for municipal road drainage pipes, specifically an airbag sealing device for municipal road drainage pipes. Background Technology

[0002] Municipal road drainage pipes play a vital role in urban infrastructure. They can collect rainwater from the road surface in a timely manner, prevent water accumulation on the road surface, ensure the normal use of roads and traffic safety, and quickly discharge rainwater into urban rivers, lakes or other natural water bodies through drainage pipes, thereby reducing the risk of urban flooding.

[0003] Currently, Chinese patent CN221857924U discloses an airbag sealing device suitable for municipal drainage pipelines. It includes a base and a first pneumatic telescopic rod connected to the base. A support rod is connected to the upper part of the first pneumatic telescopic rod, and a fixed rod is connected to the top of the support rod. The fixed rod has a viewing panel and an operating lever, and is also connected to an air pump. The base is also connected to a second pneumatic telescopic rod, and a direction adjuster is connected to the end of the second pneumatic telescopic rod. A swing arm is connected to the direction adjuster, and an airbag is detachably mounted at the end of the swing arm. A camera is mounted on the direction adjuster and connected to the viewing panel. The air pump is pneumatically connected to the first pneumatic telescopic rod, the second pneumatic telescopic rod, and the direction adjuster, and is also connected to the airbag via an air pipe. This utility model can greatly reduce the safety risks of pipeline sealing operations.

[0004] The aforementioned airbag sealing device for municipal drainage pipes has some problems in use. Although it can greatly reduce the safety risks of pipe sealing operations, the airbag placed in the drainage pipe is likely to be impacted by the water flow, causing the airbag to shift position, which may lead to poor sealing and thus may cause the drainage pipe to leak again. Utility Model Content

[0005] The purpose of this invention is to provide an airbag sealing device for municipal road drainage pipes to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A municipal road drainage pipe airbag sealing device includes a housing. An airbag is fixedly connected to the left end of the housing. Anti-deviation components for clamping the airbag and preventing it from shifting are provided at both ends of the left side of the housing. A fixing block is fixedly connected to the right end of the housing. A fixing rod is fixedly connected to the top of the fixing block. An installation ring for placing above a rainwater well opening is provided on the upper outer surface of the fixing rod. A fixing groove along the diameter is fixedly installed in the inner cavity of the installation ring. A sliding block is slidably connected to the inner cavity of the fixing groove. The sliding block is slidably sleeved on the surface of the fixing rod. A fixing member for fixing the fixing rod is provided on the top of the sliding block. A pushing component is provided on one side of the installation ring to push the sliding block to the other side, thereby pushing the housing into the drainage pipe. An air pipe is inserted into the middle of the fixing rod. One end of the air pipe extends to the lower part of the fixing rod and penetrates the housing to one side while communicating with the inner cavity of the airbag. The other end of the air pipe is connected to an air source device.

[0008] As a preferred technical solution, the anti-deviation component includes mounting plates that are fixedly installed at the four corners of the left end, and an arc-shaped clamping plate is rotatably connected between the upper and lower sets of mounting plates on the same side. An elastic pushing component is provided in the middle of the front and rear sides of the housing to simultaneously push the arc-shaped clamping plate inward to clamp the airbag.

[0009] As a preferred technical solution, the elastic pushing assembly includes U-shaped frames fixedly installed on the front and rear sides of the housing. The inner cavities of both sets of U-shaped frames are rotatably connected to mounting rods. The inner cavities of both sets of mounting rods are provided with circular grooves extending along their length. The inner cavities of both sets of circular grooves are slidably connected to sliding discs. One end of each set of sliding discs is fixedly connected to a push-pull rod. The two sets of push-pull rods extend outward through the mounting rods and are connected to the middle of the corresponding side arc-shaped clamping plates via rotating connectors. The other ends of each set of sliding discs are fixedly connected to springs. The two sets of springs are fixedly connected to the inner walls of the circular grooves. The two sets of springs can push the corresponding side push-pull rods outward, thereby causing the corresponding side arc-shaped clamping plates to move inward.

[0010] As a preferred technical solution, the rotating connector includes connecting balls that are fixedly installed at the ends of the push-pull rods, and connecting grooves are formed at the middle of the outer sides of the two sets of arc-shaped clamps. The two sets of connecting balls are rotatably connected to the inner cavities of the corresponding side connecting grooves.

[0011] As a preferred technical solution, the pushing assembly includes a lead screw threaded to one side of the mounting ring, one end of which is threaded through the mounting ring and rotatably connected to the end surface of the sliding block.

[0012] As a preferred technical solution, the fixing member includes a fixing ring fixedly connected to the top of the sliding block and located on the outer circular surface of the fixing rod. A second bolt is threadedly connected to one side surface of the fixing ring, and the end of the second bolt threaded through the fixing ring and abuts against the surface of the fixing rod.

[0013] As a preferred technical solution, fixing plates are fixedly installed on the bottom of both the front and rear sides of the mounting ring. The inner surfaces of the two sets of fixing plates are threaded with first bolts. The two sets of first bolts are threaded through the fixing plates and can abut against the inner wall of the rainwater well opening, thereby fixing the mounting ring.

[0014] As a preferred technical solution, the top and bottom of the housing are provided with openings extending along its length. The upper and lower parts of the left inner wall of the housing are provided with receiving grooves. The inner cavities of the two sets of receiving grooves are rotatably connected with abutment plates. The upper and lower parts of the right side of the housing are fixedly connected with rubber pads. The other ends of the two sets of abutment plates respectively contact the surface of the corresponding side rubber pads. The inner cavity of the housing is provided with moving parts that rotate the other ends of the abutment plates to the corresponding side to abut against the corresponding side inner wall of the drain pipe, thereby fixing the housing.

[0015] As a preferred technical solution, the moving part includes a sliding plate that is slidably connected to the inner cavity of the housing. The upper and lower ends of the left side of the sliding plate are rotatably connected to connecting strips. The other ends of the two sets of connecting strips are respectively rotatably connected to the middle surface of the corresponding side abutment plate. An electric push rod is fixedly connected inside the left side of the housing. The telescopic end of the electric push rod is fixedly connected to the end surface of the sliding plate.

[0016] As a preferred technical solution, anti-slip pads are adhered to the right side and opposite surfaces of both sets of abutment plates.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This utility model, through the setting of anti-deviation components and elastic pushing components, and the two sets of arc-shaped clamps installed on the left end of the housing, positions the airbag from both sides. When impacted by water flow, it can effectively prevent the airbag from shifting position. Furthermore, the elastic pushing component makes the clamping force of the arc-shaped clamps on the airbag elastic. When the airbag is inflated, it can adaptively adjust the clamping force, ensuring that the airbag does not shift and will not be damaged due to excessive clamping force. At the same time, it can automatically clamp the airbag, effectively preventing the airbag from shifting when it is inflated, ensuring the accuracy of the airbag's position during operation, and thus ensuring the sealing effect.

[0019] 2. Through the setting of the abutment plate and the moving part, the electric push rod can accurately control the force and angle of the abutment plate unfolding. Through the transmission of the sliding plate and the connecting strip, the abutment plate is stably abutted against the inner wall of the drainage pipe, so that the shell can be quickly and stably fixed in the pipe after entering the drainage pipe.

[0020] 3. By setting anti-slip pads, the present invention significantly increases the friction between the abutment plate and the inner wall of the drainage pipe, thereby further improving the stability of the shell fixed in the drainage pipe. Even under complex conditions such as water flow impact in the pipe, it can effectively prevent the shell from shifting and ensure that the airbag can stably seal the pipe. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the municipal road drainage pipe airbag sealing device of this utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the shell of this utility model;

[0023] Figure 3 This is a cross-sectional structural diagram of the shell of this utility model;

[0024] Figure 4 This is a cross-sectional view of the mounting rod of this utility model;

[0025] Figure 5 This is a schematic diagram of the mounting ring of this utility model.

[0026] In the picture:

[0027] 100. Shell; 101. Airbag; 102. Fixing rod; 103. Mounting ring; 104. Fixing plate; 105. First bolt; 106. Air tube; 107. Fixing block;

[0028] 200. Arc-shaped clamp; 201. U-shaped frame; 202. Mounting rod; 203. Push-pull rod; 204. Connecting ball; 205. Mounting plate; 206. Circular groove; 207. Spring; 208. Sliding disc; 209. Connecting groove;

[0029] 300. Retaining ring; 301. Second bolt; 302. Lead screw; 303. Sliding block; 304. Fixing groove;

[0030] 400. Abutment plate; 401. Anti-slip mat; 403. Rubber mat; 404. Connecting strip; 405. Sliding plate; 406. Electric push rod; 407. Receiving groove. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Please see Figure 1-5 This embodiment provides an airbag sealing device for municipal road drainage pipes, including a housing 100. An airbag 101 is fixedly connected to the left end of the housing 100. Anti-deviation components for clamping the airbag 101 and preventing its displacement are provided at both ends of the left side of the housing 100. A fixing block 107 is fixedly connected to the right end of the housing 100. A fixing rod 102 is fixedly connected to the top of the fixing block 107. An installation ring 103 for placing above the rainwater well opening is provided on the upper outer surface of the fixing rod 102. A fixing groove 304 arranged along the diameter is fixedly installed in the inner cavity of the installation ring 103. A sliding block 303 is slidably connected to the inner cavity of the fixing groove 304. The sliding block 303 is slidably sleeved on the surface of the fixing rod 102. A fixing member for fixing the fixing rod 102 is provided on the top of the sliding block 303. A pushing component is provided on one side of the mounting ring 103 to push the sliding block 303 to the other side, thereby pushing the housing 100 into the drain pipe. An air pipe 106 is inserted into the middle of the fixing rod 102. One end of the air pipe 106 extends to the lower part of the fixing rod 102 and passes through the housing 100 to one side while communicating with the inner cavity of the airbag 101. The other end of the air pipe 106 is connected to the air source device.

[0033] The anti-deviation assembly includes mounting plates 205 fixedly installed at the four corners of the left end, and an arc-shaped clamping plate 200 rotatably connected between the upper and lower sets of mounting plates 205 on the same side. An elastic pushing assembly is provided in the middle of the front and rear sides of the housing 100, which simultaneously pushes the arc-shaped clamping plate 200 inward to clamp the airbag 101.

[0034] The elastic pushing component includes U-shaped frames 201 fixedly installed on the front and rear sides of the housing 100. Each U-shaped frame 201 has a mounting rod 202 rotatably connected to its inner cavity. Each mounting rod 202 has a circular groove 206 extending along its length in its inner cavity. Each circular groove 206 has a sliding disk 208 slidably connected to its inner cavity. Each sliding disk 208 has a push-pull rod 203 fixedly connected to one end. The push-pull rods 203 extend outward through the mounting rods 202 and are connected to the middle of the corresponding side arc-shaped clamping plate 200 via a rotating connector. The other ends of each sliding disk 208 are fixedly connected to springs 207. The springs 207 are fixedly connected to the inner wall of the circular grooves 206. The springs 207 can push the corresponding side push-pull rods 203 outward, thereby... The corresponding side arc-shaped clamping plate 200 moves inward. Through the setting of the anti-deviation component and the elastic pushing component, the two sets of arc-shaped clamping plates 200 installed on the left end of the housing 100 position the airbag 101 from both sides. When impacted by water flow, it can effectively prevent the airbag 101 from shifting position. In addition, the elastic pushing component makes the clamping force of the arc-shaped clamping plate 200 on the airbag 101 have a certain elasticity. When the airbag 101 is inflated, it can adaptively adjust the clamping force, ensuring that the airbag 101 does not shift, and that the airbag 101 is not damaged due to excessive clamping force. At the same time, it can automatically clamp the airbag 101, effectively preventing the airbag 101 from shifting when it is inflated, ensuring the accuracy of the position of the airbag 101 during operation, and thus ensuring the sealing effect.

[0035] The rotating connector includes connecting balls 204 fixedly installed at the ends of the push-pull rod 203. Connecting grooves 209 are formed at the middle of the outer side of the two sets of arc-shaped clamps 200. The two sets of connecting balls 204 are rotatably connected to the inner cavity of the corresponding side connecting grooves 209. Through the setting of the rotating connector, the cooperation between the connecting balls 204 and the connecting grooves 209 allows the push-pull rod 203 and the arc-shaped clamps 200 to rotate flexibly.

[0036] The pushing component includes a lead screw 302 threaded to one side of the mounting ring 103. One end of the lead screw 302 is threaded through the mounting ring 103 and rotatably connected to the end surface of the sliding block 303. By setting the pushing component, rotating the lead screw 302 can precisely control the movement of the sliding block 303, thereby accurately pushing the fixed rod 102 and the housing 100 towards the drain pipe, making it easy for the operator to slowly and accurately push the housing 100 into the appropriate position in the drain pipe.

[0037] The fixing component includes a fixing ring 300 fixedly connected to the top of the sliding block 303 and located on the outer surface of the fixing rod 102. A second bolt 301 is threadedly connected to one side surface of the fixing ring 300. The end of the second bolt 301 is threaded through the fixing ring 300 and abuts against the surface of the fixing rod 102. With the setting of the fixing component, when it is necessary to adjust the position of the fixing rod 102, the fixing rod 102 can be easily moved by loosening the second bolt 301. After the adjustment is completed, tightening the second bolt 301 can reliably fix the fixing rod 102. It can adapt to the installation needs of rainwater wells and drainage pipes of different depths, and enhance the versatility and flexibility of the device.

[0038] The mounting ring 103 has fixing plates 104 fixedly installed on both the front and rear bottom sides. The inner surfaces of the two sets of fixing plates 104 are threaded with first bolts 105. The two sets of first bolts 105 are threaded through the fixing plates 104 and can abut against the inner wall of the rainwater well opening, thereby fixing the mounting ring 103. Through the setting of the fixing plates 104 and the first bolts 105, the mounting ring 103 can be firmly fixed to the inner wall of the rainwater well opening, and can withstand various forces generated by the device in subsequent operation, ensuring the stability of the entire device in the working process, and avoiding the normal operation of the housing 100 and the airbag 101 due to the loosening of the mounting ring 103.

[0039] The housing 100 has openings at its top and bottom that extend along its length. The left inner wall of the housing 100 has two receiving grooves 407 on its upper and lower sides. The inner cavities of both sets of receiving grooves 407 are rotatably connected to abutment plates 400. Rubber pads 403 are fixedly connected to the upper and lower parts of the right side of the housing 100. The other ends of the two sets of abutment plates 400 respectively contact the surfaces of the corresponding rubber pads 403. The inner cavity of the housing 100 is equipped with a movable component that rotates the other ends of the abutment plates 400 to the corresponding sides, thereby abutting against the corresponding inner walls of the drain pipe and fixing the housing 100. The movable component includes a sliding plate 405 slidably connected to the inner cavity of the housing 100. Connecting strips 404 are rotatably connected to both the upper and lower ends of the left side of the movable plate 405. The other ends of the two sets of connecting strips 404 are rotatably connected to the middle surface of the corresponding side abutment plate 400. An electric push rod 406 is fixedly connected to the inside of the left side of the housing 100. The telescopic end of the electric push rod 406 is fixedly connected to the end surface of the sliding plate 405. Through the setting of the abutment plate 400 and the moving part, the electric push rod 406 can accurately control the force and angle of the abutment plate 400's unfolding. Through the transmission of the sliding plate 405 and the connecting strips 404, the abutment plate 400 is stably abutted against the inner wall of the drainage pipe, so that the housing 100 can be quickly and stably fixed inside the pipe after entering the drainage pipe.

[0040] Among them, the electric actuator 406 is a waterproof electric actuator 406, and how to control the electric actuator 406 is a common technical means. The specific operation steps will not be described in detail here.

[0041] Among them, anti-slip pads 401 are glued to the right side and opposite surfaces of the two sets of abutment plates 400. The anti-slip pads 401 significantly increase the friction between the abutment plate 400 and the inner wall of the drainage pipe, further improving the stability of the housing 100 fixed in the drainage pipe. Even under complex conditions such as water flow impact in the pipe, the housing 100 can be effectively prevented from shifting, ensuring that the airbag 101 can stably seal the pipe.

[0042] Working principle;

[0043] First, place the mounting ring 103 above the opening of the rainwater well, adjust the position of the mounting ring 103 so that the fixing rod 102 is in a suitable position, and rotate the first bolt 105 on the bottom fixing plate 104 on both sides of the mounting ring 103 so that the thread of the first bolt 105 passes through the fixing plate 104 and abuts against the inner wall of the opening of the rainwater well, thereby firmly fixing the mounting ring 103 to the opening of the rainwater well.

[0044] Then, grasp the fixing rod 102 and loosen the second bolt 301 to release the fixing rod 102. At this time, slowly move the fixing rod 102 downward. The fixing rod 102 moves downward from the inner cavity of the fixing ring 300, thereby driving the housing 100 to move downward along the rainwater well until the end of the housing 100 is aligned with the opening of the drainage pipe. At this time, tighten the second bolt 301 to fix the fixing rod 102 and prevent it from sliding downward.

[0045] At this time, rotating the lead screw 302 pushes the sliding block 303, which in turn drives the fixed rod 102 and the housing 100 connected to the fixed rod 102 to move towards the drain pipe, thereby slowly pushing the housing 100 into the drain pipe.

[0046] Immediately, the staff activated the electric push rod 406 inside the housing 100. The telescopic end of the electric push rod 406 retracted into the electric push rod 406, thereby driving the sliding plate 405 to slide to the left. Then, the sliding plate 405, through the rotating connecting strip 404, drove the abutment plate 400 to unfold around the circular groove 206 on the inner wall of the housing 100, so that the other end of the abutment plate 400 rotated toward the corresponding inner wall of the drain pipe. Thus, the anti-slip pad 401 on the opposite surface of the right end of the abutment plate 400 came into close contact with the inner wall of the drain pipe, thereby fixing the housing 100 inside the drain pipe.

[0047] Furthermore, the springs 207 inside the two sets of circular grooves 206 push the sliding disk 208 outward, and through the transmission of the push-pull rod 203, push the corresponding side arc-shaped clamping plates 200 inward simultaneously. Thus, the two sets of arc-shaped clamping plates 200 are respectively pushed inward by the corresponding side springs 207 to clamp the airbag 101, which can prevent the airbag 101 from shifting.

[0048] At this time, the air source equipment is turned on, and the gas enters the inner cavity of the airbag 101 through the air pipe 106, causing the airbag 101 to gradually inflate and expand, thereby blocking the pipe. In this process, the airbag 101, which gradually expands outward, pushes the arc-shaped clamp 200 outward, thereby compressing the inner cavity spring 207 of the circular groove 206 through the transmission of the push-pull rod 203 and the sliding plate 208.

[0049] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A municipal road drainage pipe airbag sealing device, characterized in that, The device includes a housing (100), to which an airbag (101) is fixedly connected. Anti-deviation components for clamping the airbag (101) and preventing its displacement are provided at both ends of the left side of the housing (100). A fixing block (107) is fixedly connected to the right side of the housing (100). A fixing rod (102) is fixedly connected to the top of the fixing block (107). An installation ring (103) for placement above the rainwater well opening is provided on the upper outer surface of the fixing rod (102). A fixing groove (304) is fixedly installed along the diameter of the inner cavity of the installation ring (103). The inner cavity of the fixing groove (304) is slidably connected... A sliding block (303) is attached, which is slidably sleeved on the surface of the fixed rod (102). The top of the sliding block (303) is provided with a fixing member for fixing the fixed rod (102). One side of the mounting ring (103) is provided with a pushing component that pushes the sliding block (303) to the other side, thereby pushing the housing (100) into the drain pipe. An air tube (106) is inserted into the middle of the fixed rod (102). One end of the air tube (106) extends to the lower part of the fixed rod (102) and penetrates the housing (100) to one side, while communicating with the inner cavity of the airbag (101). The other end of the air tube (106) is connected to the air source device.

2. The airbag sealing device for municipal road drainage pipes according to claim 1, characterized in that: The anti-deviation component includes mounting plates (205) fixedly installed at the four corners of the left end, and an arc-shaped clamping plate (200) is rotatably connected between the upper and lower sets of mounting plates (205) on the same side. An elastic pushing component is provided in the middle of the front and rear sides of the housing (100) to simultaneously push the arc-shaped clamping plate (200) inward to clamp the airbag (101).

3. The airbag sealing device for municipal road drainage pipes according to claim 2, characterized in that: The elastic pushing assembly includes U-shaped frames (201) fixedly installed on the front and rear sides of the housing (100). The inner cavities of both sets of U-shaped frames (201) are rotatably connected to mounting rods (202). The inner cavities of both sets of mounting rods (202) are provided with circular grooves (206) extending along their length. The inner cavities of both sets of circular grooves (206) are slidably connected to sliding discs (208). One end of each set of sliding discs (208) is fixedly connected to a push-pull rod (203). Push-pull rods (203) extend outward through mounting rods (202) and are connected to the middle of the corresponding side arc-shaped clamping plate (200) via rotating connectors. The other ends of the two sets of sliding discs (208) are respectively fixedly connected with springs (207). The two sets of springs (207) are respectively fixedly connected to the inner wall of the circular groove (206). The two sets of springs (207) can push the corresponding side push-pull rods (203) outward, thereby driving the corresponding side arc-shaped clamping plate (200) to move inward.

4. The airbag sealing device for municipal road drainage pipes according to claim 3, characterized in that: The rotating connector includes connecting balls (204) that are fixedly installed at the ends of the push-pull rod (203). The outer middle of the two sets of arc-shaped clamps (200) has connecting grooves (209). The two sets of connecting balls (204) are rotatably connected to the inner cavity of the corresponding side connecting grooves (209).

5. The airbag sealing device for municipal road drainage pipes according to claim 4, characterized in that: The actuating assembly includes a lead screw (302) threaded to one side of the mounting ring (103), one end of which is threaded through the mounting ring (103) and rotatably connected to the end surface of the sliding block (303).

6. The airbag sealing device for municipal road drainage pipes according to claim 5, characterized in that: The fastener includes a fixing ring (300) fixedly connected to the top of the sliding block (303) and located on the outer surface of the fixing rod (102). A second bolt (301) is threadedly connected to one side surface of the fixing ring (300). The end of the second bolt (301) threadedly passes through the fixing ring (300) and abuts against the surface of the fixing rod (102).

7. The airbag sealing device for municipal road drainage pipes according to claim 6, characterized in that: Fixing plates (104) are fixedly installed on the bottom of both the front and rear sides of the mounting ring (103). The inner surfaces of the two sets of fixing plates (104) are threaded with first bolts (105). The two sets of first bolts (105) are threaded through the fixing plates (104) and can abut against the inner wall of the opening of the rainwater well, thereby fixing the mounting ring (103).

8. The airbag sealing device for municipal road drainage pipes according to claim 1, characterized in that: The top and bottom of the housing (100) are provided with openings along its length. The upper and lower parts of the left inner wall of the housing (100) are provided with receiving grooves (407). The inner cavities of the two sets of receiving grooves (407) are rotatably connected with abutment plates (400). The upper and lower parts of the right side of the housing (100) are fixedly connected with rubber pads (403). The other ends of the two sets of abutment plates (400) respectively contact the surface of the corresponding side rubber pads (403). The inner cavity of the housing (100) is provided with a movable component that rotates the other end of the abutment plate (400) to the corresponding side to abut against the inner wall of the corresponding side of the drain pipe, thereby fixing the housing (100).

9. A municipal road drainage pipe airbag sealing device according to claim 8, characterized in that: The movable component includes a sliding plate (405) slidably connected to the inner cavity of the housing (100). The upper and lower ends of the left side of the sliding plate (405) are rotatably connected to connecting strips (404). The other ends of the two sets of connecting strips (404) are respectively rotatably connected to the middle surface of the corresponding side abutment plate (400). An electric push rod (406) is fixedly connected to the inside of the left side of the housing (100). The telescopic end of the electric push rod (406) is fixedly connected to the end surface of the sliding plate (405).

10. A municipal road drainage pipe airbag sealing device according to claim 9, characterized in that: Anti-slip pads (401) are adhered to the right side and opposite surfaces of both sets of abutment plates (400).

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