Airbag provided with a reinforcing structure for treating tunnel water gushing problems

Abstract

This invention relates to an airbag with a reinforced structure for dealing with tunnel water inrush problems, comprising a connecting seat; a telescopic rod fixed to the connecting seat and capable of telescopic movement in the left and right directions; a guide rod coaxially arranged with the telescopic rod, and a connecting plate disposed at the end of the guide rod away from the connecting seat; an arc-shaped support rod evenly distributed around the guide rod, with the end of the support rod facing the connecting plate hinged to the connecting plate, and the support rod, when opened, fitting into the hemispherical end of the airbag; a fixed sleeve fixedly connected to the guide rod, with top support rods evenly distributed around the fixed sleeve; an deployment mechanism disposed on the guide rod, and the deployment mechanism is hinged to both the support rod and the top support rod; a sliding plate disposed on the side of the deployment mechanism facing the connecting seat, and the sliding plate is guided and slidably disposed relative to the guide rod; and a drive mechanism disposed on the guide rod. The reinforced structure within the airbag enhances the structural rigidity of the airbag on the load-bearing side, while also increasing the friction between the airbag and the tunnel wall, greatly improving the airbag's ability to resist external forces and seal the tunnel.

Description

Technical Field

[0001] This invention belongs to the field of tunnel safety technology, and particularly relates to an airbag with a reinforced structure for dealing with tunnel water inrush problems. Background Technology

[0002] With the rapid development of cities and the booming transportation industry, the development and utilization of underground space is receiving increasing attention. Underground railways are being built in more and more cities, making safety issues and emergency response measures during the construction and operation of underground tunnels particularly important. The underground environment is complex and changeable; tunnels often inevitably pass through water-rich soil layers or areas with well-developed rock fissures. These locations are prone to serious leakage and mudslides, which, if not prevented in time, can cause enormous damage to the tunnel and its surrounding environment.

[0003] Underground tunnels present unique challenges due to their confined spaces. Traditional wall-building methods are not only costly and time-consuming, but the walls can also be washed away by water during concrete pouring or before hardening, failing to address the rapid spread of water in emergencies. Using airbags that inflate rapidly and adhere tightly to the tunnel walls can effectively block water inflow, preventing the spread of disaster and ensuring the safety of personnel and property. However, because airbags are membrane structures, each point on the membrane can only withstand tensile stress. Therefore, when using airbags to seal tunnels and resist external forces, the internal pressure of the airbag must be greater than the external pressure. This increased internal pressure places high demands on the strength of the airbag material and significantly limits its application range and effectiveness. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide an airbag with a reinforced structure for dealing with tunnel water inrush problems, which aims to improve the stiffness of the airbag on the load-bearing side, so that the airbag can withstand greater external pressure exceeding the internal pressure value while the internal pressure remains constant, and fully exert the sealing effect of the airbag.

[0005] To achieve the above objectives, the technical solution adopted by the present invention for an airbag with a reinforced structure for dealing with tunnel water inrush problems is as follows: An airbag with a reinforced structure for dealing with tunnel water inrush problems includes: Connector; Telescopic rods: Two telescopic rods are provided, which are fixed on the left and right sides of the connecting seat respectively. The telescopic rods can extend and retract in the left and right directions. Guide rods: Two guide rods are provided. The guide rods are fixed to the ends of the telescopic rods away from the connecting seat. The guide rods are coaxial with the telescopic rods. A connecting plate is provided at the end of the guide rods away from the connecting seat. The connecting plate is used to fix and connect to the end of the airbag. Support rods: Several support rods are provided. The support rods are arc-shaped and are evenly distributed around the guide rod. The end of the support rod facing the connecting plate is hinged to the connecting plate. After the support rod is opened, it is adapted to the hemispherical end of the airbag for support. Fixed sleeve: Fixedly connected to the guide rod, the fixed sleeve has several top support rods that extend radially along the guide rod and are evenly distributed around the circumference. The length of the top support rods in the radial direction of the guide rod is adjustable. The top support rods and the support rods are staggered around the guide rod. The end of the top support rod away from the guide rod is fixedly connected to the airbag. Deployment mechanism: It is set on the guide rod and is hinged to the support rod and the top support rod respectively. When the deployment mechanism moves and unfolds relative to the fixed sleeve, it can open up the support rod and the top support rod. Sliding disk: Located on the side of the unfolding mechanism facing the connecting seat, the sliding disk is guided and slidably positioned relative to the guide rod; Drive mechanism: Located on the guide rod, the drive mechanism drives the sliding disk to move in order to unfold the unfolding mechanism.

[0006] Beneficial Effects: The airbag with a locally reinforced structure for dealing with tunnel water inrush problems, as described in this invention, can be rapidly deployed in its extension direction by the extension and retraction of the telescopic rod. The sliding plate is pressed down by the drive mechanism, which drives the deployment mechanism to move relative to the fixed sleeve, thereby deploying the deployment mechanism. The top support rod then supports the airbag against the tunnel sidewall. At the same time, the deployment mechanism can also open the support rod, which is arc-shaped and can open the hemispherical end of the airbag. Thus, when the airbag needs to block water inrush, the support rod and guide rod can increase the structural strength of the airbag on the load-bearing side inside the airbag, thereby increasing the effectiveness of the airbag in blocking the tunnel.

[0007] Furthermore, the top support rod includes a fixed rod fixedly connected to the fixed sleeve and a sleeve sleeved on the fixed rod and adapted to guide and slide with the fixed rod.

[0008] Beneficial effects: The top support rod structure is simple to set up. The expansion and contraction of the top support rod enables the cylindrical part of the airbag to support the airbag radially, which increases the connection strength between the airbag and the tunnel sidewall.

[0009] Furthermore, the unfolding mechanism includes a first slide block and a second slide block respectively disposed on the left and right sides of the fixed sleeve. The first slide block is provided with a plurality of first push rods, which are correspondingly disposed with support rods. One end of the first push rod is hinged to the first slide block, and the other end of the first push rod is hinged to the support rod. The second slide block is provided with a plurality of second push rods, which are correspondingly disposed with top support rods. One end of the second push rod is hinged to the second slide block, and the other end of the second push rod is hinged to the sleeve. A crossbar is fixedly connected between the first slide block and the second slide block.

[0010] Beneficial effects: By moving the unfolding mechanism relative to the fixed sleeve, the unfolding of the top support rod and the opening of the support rod can be achieved simultaneously. Compared with setting separate drive structures for the opening of the top support rod and the unfolding of the support rod, the unfolding mechanism can achieve the simultaneous unfolding of the top support rod and the support rod by the same drive mechanism, saving the number of drive structures required.

[0011] Furthermore, a spring is fixedly connected between the fixed sleeve and the sleeve.

[0012] Beneficial effects: When the sliding disc moves toward the fixed sleeve, the spring extends and elongates as the sleeve extends. When the sliding disc moves away from the fixed sleeve, the spring resets and pulls the sleeve back, thus retracting the top support rod.

[0013] A locking structure is provided between the sliding disk and the guide rod.

[0014] Beneficial effect: The locking structure can fix the sliding disk relative to the guide rod after it has moved into place.

[0015] Furthermore, the locking structure includes an annular groove formed on the guide rod, and the sliding disk has an annular cavity. The annular cavity is provided with a telescopic structure that can extend and retract radially along the guide rod. When the telescopic structure extends into the annular groove, the sliding disk is fixed relative to the guide rod.

[0016] Beneficial effects: The locking structure is simple to set up. It can fix the sliding disk by extending the telescopic structure into the annular groove, and unlock the sliding disk by retracting the telescopic structure into the annular cavity.

[0017] Furthermore, the telescopic structure includes a core rod fixed to the bottom of the annular cavity and an insert rod sleeved on the core rod and adapted to guide the core rod to slide. A spring is sleeved on the core rod, with one end of the spring fixedly connected to the bottom of the annular cavity and the other end fixedly connected to the insert rod.

[0018] Beneficial effects: The telescopic structure is simple to set up and can easily guide the telescopic movement of the structure.

[0019] Furthermore, the guide rod is provided with a receiving cavity, which is connected to the annular groove. A first electric push rod is provided in the receiving cavity. The first electric push rod is horizontally positioned. When the first electric push rod is extended, it can push the insertion rod into the annular groove to unlock the sliding disc.

[0020] Beneficial effects: The arrangement of the receiving cavity and the first electric push rod facilitates the pushing of the telescopic structure from the annular groove into the annular cavity, thereby unlocking the locking structure.

[0021] The driving mechanism is a second electric push rod fixed on the guide rod. The second electric push rod is located on the side of the sliding plate facing the connecting seat and is fixedly connected to the sliding plate.

[0022] Beneficial effect: The drive structure is simple to set up.

[0023] A retractable guide tube is provided between the connecting seat and the sliding plate.

[0024] Beneficial effect: The telescopic guide tube design prevents the sliding disc from rotating relative to the guide rod when it moves on the guide rod. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of an airbag with a reinforced structure for dealing with tunnel water inrush problems according to the present invention; Figure 2 yes Figure 1 Schematic diagram of the left half of the reinforced structure; Figure 3 yes Figure 1 Enlarged view of section A in the image; Figure 4 yes Figure 1 A schematic diagram of the unfolding mechanism.

[0026] Reference numerals: 1-Airbag; 2-Connecting seat; 3-Telescopic rod; 4-Guide cylinder; 5-Second electric push rod; 6-Sliding disc; 7-Second top rod; 8-First spring; 9-Fixing rod; 10-Sleeve; 11-Fixing sleeve; 12-Guide rod; 13-First slide; 14-Support rod; 15-First top rod; 16-Second slide; 17-Cross rod; 18-Core rod; 19-Insertion rod; 20-Second spring; 21-Annular cavity; 22-Receiving cavity; 23-First electric push rod; 24-Adjusting rod; 25-Top support sleeve. Detailed Implementation

[0027] The following is a detailed description of an airbag with a reinforced structure for dealing with tunnel water inrush problems according to the present invention, with reference to the accompanying drawings and specific embodiments: like Figure 1 As shown, the airbag 1 with a reinforced structure for dealing with tunnel water inrush problem according to the present invention has a cylindrical shape in the middle after being filled with gas, and hemispherical shapes at both ends of the cylindrical shape. The hemispherical ends are fixedly connected to the cylindrical shape to form the airbag 1, and the airbag 1 can be adapted to the cross-sectional shape of the tunnel.

[0028] The partial reinforcement structure of the airbag 1 includes a connecting seat 2. Two telescopic rods 3 are fixedly connected to the left and right sides of the connecting seat 2, respectively. The telescopic rods 3 can extend and retract in the left and right direction. In this embodiment, the telescopic rods 3 are third electric push rods. When the telescopic rods 3 extend, they can quickly expand the airbag 1 in its axial direction. It should be noted that in this application, the structures on the left and right sides of the connecting seat 2 are symmetrically arranged. In the description, only the structure of one side of the connecting seat 2 will be described.

[0029] Guide rods 12 are fixed to the end of the telescopic rod 3 away from the connecting seat 2. Two guide rods 12 are provided, and the guide rods 12 are coaxially arranged with the telescopic rod 3. A connecting plate is provided at the end of the guide rod 12 away from the connecting seat 2. The connecting plate is used to fix and connect to the end (hemispherical end) of the airbag 1. Several support rods 14 are evenly distributed around the end of the guide rod 12. The support rods 14 are arc-shaped. The end of the support rod 14 facing the connecting plate is hinged to the connecting plate. After the support rods 14 are opened, they are adapted to support the hemispherical end of the airbag 1, thereby increasing the structural strength of the hemispherical structure at the end of the airbag 1.

[0030] A fixing sleeve 11 is fixedly connected to the guide rod 12. In this embodiment, the fixing sleeve 11 has several top support rods that extend radially along the guide rod 12 and are evenly distributed axially. The length of the top support rods in the radial direction of the guide rod 12 is adjustable. The top support rods and the support rods 14 are staggered around the guide rod 12. The end of the top support rod away from the guide rod 12 is fixedly connected to the airbag 1. In this embodiment, the top support rod includes a fixing rod 9 fixedly connected to the fixing sleeve 11 and a sleeve 10 sleeved on the fixing rod 9 and adapted to guide and slide with the fixing rod 9. The end of the sleeve 10 away from the fixing sleeve 11 is fixedly connected to the airbag 1. When the top support rod is deployed, the end of the top support rod sleeve 10 away from the fixed sleeve 11 supports the airbag 1 and pushes the airbag 1 against the tunnel wall, increasing the force between the airbag 1 and the tunnel wall. In the event of water surge, this increases the contact force between the airbag 1 and the tunnel, preventing the airbag 1 from moving along the tunnel under water pressure and losing its ability to resist water pressure. In this embodiment, the fixed position of the fixed sleeve 11 on the guide rod 12 ensures that when the top support rod is extended, it supports the airbag 1 at the junction of the cylindrical and hemispherical structures.

[0031] An unfolding mechanism is also provided on the guide rod 12. The unfolding mechanism is hinged to the support rod 14 and the top support rod respectively. When the unfolding mechanism moves and unfolds relative to the fixed sleeve 11, it can open up the support rod 14 and the top support rod.

[0032] Specifically, the unfolding mechanism includes a first slide block 13 and a second slide block 1616 respectively disposed on the left and right sides of the fixed sleeve 11. The first slide block 13 is guided and slidably disposed on the guide rod 12, and the second slide block 16 is guided and slidably disposed on the guide rod 12. The first slide block 13 is provided with a plurality of first push rods 15, which are correspondingly arranged with the support rod 14. One end of the first push rod 15 is hinged to the first slide block 13, and the other end of the first push rod 15 is hinged to the support rod 14. The second slide block 16 is provided with a plurality of second push rods 7, which are correspondingly arranged with the top support rod. One end of the second push rod 7 is hinged to the second slide block 16, and the other end of the second push rod 7 is hinged to the sleeve 10. A crossbar 17 is fixedly connected between the first slide block 13 and the second slide block 16. In this embodiment, a plurality of crossbars 17 are provided and evenly distributed around the first slide block 13 and the second slide block 16. The crossbars 17 realize the fixed connection between the first slide block 13 and the second slide block 16, thereby realizing the synchronous movement of the first slide block 13 and the second slide block 16 relative to the guide rod 12, and also avoiding the relative rotation of the first slide block 13 and the second slide block 16.

[0033] In this embodiment, in order to achieve automatic reset of the unfolding mechanism, a first spring 8 is provided between the fixed sleeve 11 and the sleeve 10 of the top support rod, and the first spring 8 is correspondingly provided with the top support rod.

[0034] A sliding disk 6 is provided on the side of the unfolding mechanism facing the connecting seat 2. That is, the sliding disk 6 is located between the connecting seat 2 and the second slide block 16. The sliding disk 6 is guided and slidably disposed relative to the guide rod 12. A driving mechanism is also provided on the guide rod 12. The driving mechanism can drive the sliding disk 6 to move along the guide rod 12 toward the side away from the connecting seat 2. The sliding disk 6 presses against the second slide block 16, thereby moving the second slide block 16 of the unfolding mechanism toward the fixed sleeve 11 through the sliding disk 6, realizing the synchronous unfolding of the top support rod and the support rod 14. In this embodiment, the driving mechanism is a second electric push rod 5 fixed on the guide rod 12. The second electric push rod 5 is located on the side of the sliding disk 6 facing the connecting seat 2 and is fixedly connected to the sliding disk 6.

[0035] A locking structure is provided between the sliding disk 6 and the guide rod 12. The locking structure includes an annular groove on the guide rod 12 and an annular cavity 21 on the sliding disk 6. A telescopic structure that can extend and retract radially along the guide rod 12 is provided in the annular cavity 21. When the telescopic structure extends into the annular groove, the sliding disk 6 is fixed relative to the guide rod 12, thereby locking the sliding disk 6 relative to the guide rod 12.

[0036] In this embodiment, the telescopic structure includes a core rod 18 fixed to the bottom of the annular cavity 21 and an insert rod 19 sleeved on the core rod 18 and adapted to guide and slide with the core rod 18. A second spring 20 is sleeved on the core rod 18. One end of the second spring 20 is fixedly connected to the bottom of the annular cavity 21, and the other end is fixedly connected to the insert rod 19. When the sliding disk 6 moves toward the second sliding seat 16 and the sliding disk 6 moves to the annular groove of the guide rod 12, under the reset action of the second spring 20, the second spring 20 pushes the insert rod 19, inserting the insert rod 19 into the annular groove of the guide rod 12, thereby locking the sliding disk 6 relative to the guide rod 12. At this time, the top support rod can support the airbag 1 against the tunnel sidewall, and the support rod 14 can support the hemispherical end of the airbag 1 open.

[0037] The guide rod 12 is also provided with a receiving cavity 22, which is connected to the annular groove. A first electric push rod 23 is provided in the receiving cavity 22. The first electric push rod 23 is horizontally positioned. When the first electric push rod 23 extends, it can push the insertion rod 19 into the annular groove 21, thereby unlocking the sliding disk 6. In this embodiment, the end face of the insertion rod 19 facing the annular groove is an inclined surface from left to right along the radial inward of the guide rod 12, and the pushing end face of the first electric push rod 23 is also an inclined surface from left to right along the radial inward of the guide rod 12, so that the insertion rod 19 can be smoothly pushed out of the annular groove by the first electric push rod 23.

[0038] In this embodiment, to prevent the sliding disk 6 from rotating as it moves along the guide rod 12, a retractable guide cylinder 4 is provided between the connecting seat 2 and the sliding disk 6. One end of the guide cylinder 4 is fixedly connected to the connecting seat 2, and the other end of the guide cylinder 4 is fixedly connected to the sliding disk 6. In this embodiment, several guide cylinders 4 are provided around the guide rod 12. The guide cylinders 4 can extend as the telescopic rod 3 extends and shorten as the telescopic rod 3 shortens. When the drive mechanism drives the sliding disk 6 to move along the guide rod 12, the guide cylinders 4 will also extend and shorten synchronously with the extension and retraction of the drive mechanism.

[0039] In this embodiment, a top support structure extending radially along the airbag is also fixedly installed on the connecting seat. The top support structure includes an adjusting rod 24 fixed on the connecting seat and a top support sleeve 25 that is guided and slidably adapted to the adjusting rod 24. In this embodiment, the adjusting rod 24 is an electric telescopic rod. The top of the adjusting rod 24 is fixedly connected to the inside of the top support sleeve 25. When the adjusting rod 24 extends, it can push the top support sleeve 25 outward, thereby opening the airbag. Moreover, it can also push the airbag against the tunnel wall, increasing the force between the airbag and the tunnel wall.

[0040] To increase the load-bearing capacity of the airbag tip, in this embodiment, the hemispherical part of the airbag tip is made of a thickened material.

[0041] In this invention, an airbag 1 with a reinforced structure for dealing with tunnel water inrush is inflated during use. Simultaneously, two telescopic rods 3 extend, allowing the airbag 1 to expand axially. Then, under the pushing action of the second electric push rod 5, the sliding disc 6 pushes the second sliding block 16 of the expansion mechanism towards the fixed sleeve 11. Under the action of the second push rod 7, the sleeve 10 of the support rod moves relative to the fixed rod 9 in a direction away from the fixed sleeve 11, thereby providing support to the cylindrical structure of the airbag 1 in the radial direction of the guide rod 12. Simultaneously, the first sliding block 13... Moving away from the fixed sleeve 11, the support rod 14 is pushed open by the first push rod 15, thus supporting the hemispherical structure of the airbag 1. When the sliding plate 6 moves to the annular groove of the guide rod 12, the telescopic structure in the sliding plate 6 extends and inserts into the annular groove. At this time, the second electric push rod 5 stops moving, locking the sliding plate 6 and ensuring the stability of the push rod and the support rod 14. The interaction between the push rod and the support rod 14 increases the structural strength of the end of the airbag 1 and provides a larger supporting force on the side of the airbag 1 that bears water pressure. At this time, the first spring 8 is stretched. When the airbag 1 is no longer in use, the first electric push rod 23 extends, pushing the insertion rod 19 into the annular cavity 21, thus unlocking the sliding plate 6. The second electric push rod 5 retracts the sliding plate 6 toward the connecting seat 2. At this time, the first spring 8 returns to its original position. Under the action of the first spring 8, the unfolding mechanism moves toward the connecting seat 2, the push rod retracts, and the support rod 14 retracts, thus storing the airbag 1.

[0042] In the above embodiments, the top support rod includes a fixed rod fixedly connected to the fixed sleeve and a sleeve sleeved on the fixed rod and adapted to slide in a guiding manner with the fixed rod; in other embodiments, the top support rod includes a fixed rod fixedly connected to the fixed sleeve and a sleeve inserted into the fixed rod and adapted to slide in a guiding manner with the fixed rod.

[0043] In the above embodiments, a first spring is fixedly connected between the fixed sleeve and the sleeve; in other embodiments, the first spring may not be provided, in which case the sliding disk is fixedly connected to the unfolding structure.

[0044] In the above embodiments, the driving mechanism is a second electric push rod fixed on the guide rod. The second electric push rod is disposed on the side of the sliding plate facing the connecting seat and is fixedly connected to the sliding plate. In other embodiments, the driving mechanism may also be a pneumatic cylinder.

[0045] In the above embodiments, a retractable guide tube is provided between the connecting seat and the sliding plate; in other embodiments, the guide tube may not be provided.

Claims

1. An airbag with a reinforced structure for dealing with tunnel water inrush problems, characterized in that, include: Connector; Telescopic rods: Two telescopic rods are provided, which are fixed on the left and right sides of the connecting seat respectively. The telescopic rods can extend and retract in the left and right directions. Guide rods: Two guide rods are provided. The guide rods are fixed to the ends of the telescopic rods away from the connecting seat. The guide rods are coaxial with the telescopic rods. A connecting plate is provided at the end of the guide rods away from the connecting seat. The connecting plate is used to fix and connect to the end of the airbag. Support rods: Several support rods are provided. The support rods are arc-shaped and are evenly distributed around the guide rod. The end of the support rod facing the connecting plate is hinged to the connecting plate. After the support rod is opened, it is adapted to the hemispherical end of the airbag for support. Fixed sleeve: Fixedly connected to the guide rod, the fixed sleeve has several top support rods that extend radially along the guide rod and are evenly distributed around the circumference. The length of the top support rods in the radial direction of the guide rod is adjustable. The top support rods and the support rods are staggered around the guide rod. The end of the top support rod away from the guide rod is fixedly connected to the airbag. Deployment mechanism: It is set on the guide rod and is hinged to the support rod and the top support rod respectively. When the deployment mechanism moves and unfolds relative to the fixed sleeve, it can open up the support rod and the top support rod. Sliding disk: Located on the side of the unfolding mechanism facing the connecting seat, the sliding disk is guided and slidably positioned relative to the guide rod; Drive mechanism: Located on the guide rod, the drive mechanism drives the sliding disk to move in order to unfold the unfolding mechanism; The top support rod includes a fixed rod fixedly connected to the fixed sleeve and a sleeve sleeved on the fixed rod and adapted to guide and slide with the fixed rod; The unfolding mechanism includes a first slide block and a second slide block respectively disposed on the left and right sides of the fixed sleeve. The first slide block is provided with a plurality of first push rods, which are correspondingly disposed with support rods. One end of the first push rod is hinged to the first slide block, and the other end of the first push rod is hinged to the support rod. The second slide block is provided with a plurality of second push rods, which are correspondingly disposed with top support rods. One end of the second push rod is hinged to the second slide block, and the other end of the second push rod is hinged to the sleeve. A crossbar is fixedly connected between the first slide block and the second slide block. A first spring is fixedly connected between the fixed sleeve and the sleeve.

2. An airbag with a reinforced structure for dealing with tunnel water inrush problems according to claim 1, characterized in that, A locking structure is provided between the sliding disk and the guide rod.

3. An airbag with a reinforced structure for dealing with tunnel water inrush problems according to claim 2, characterized in that, The locking structure includes an annular groove on the guide rod, and the sliding disk has an annular cavity. The annular cavity is provided with a telescopic structure that can extend and retract radially along the guide rod. When the telescopic structure extends into the annular groove, the sliding disk is fixed relative to the guide rod.

4. An airbag with a reinforced structure for dealing with tunnel water inrush problems according to claim 3, characterized in that, The telescopic structure includes a core rod fixed to the bottom of the annular cavity and an insert rod sleeved on the core rod and adapted to guide the sliding of the core rod. A second spring is sleeved on the core rod, with one end of the second spring fixedly connected to the bottom of the annular cavity and the other end fixedly connected to the insert rod.

5. An airbag with a reinforced structure for dealing with tunnel water inrush problems according to claim 4, characterized in that, The guide rod is provided with a receiving cavity, which is connected to the annular groove. A first electric push rod is provided in the receiving cavity. The first electric push rod is horizontally positioned. When the first electric push rod is extended, it can push the insertion rod into the annular groove to unlock the sliding plate.

6. An airbag with a reinforced structure for dealing with tunnel water inrush problems according to claim 1, characterized in that, The driving mechanism is a second electric push rod fixed on the guide rod. The second electric push rod is located on the side of the sliding plate facing the connecting seat and is fixedly connected to the sliding plate.

7. An airbag with a reinforced structure for dealing with tunnel water inrush problems according to claim 1, characterized in that, A retractable guide tube is provided between the connecting seat and the sliding plate.

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