Pressing device for sealing ring of tunnel portal of metro contact channel

Abstract

The utility model relates to the technical field of tunnel construction, in particular to a metro connecting channel portal sealing ring pressing device which comprises a pressing body, the pressing body is detachably arranged, an expansion pressing piece is arranged on one side of the pressing body, an abutting assembly is arranged on the pressing body to apply pressure to one side of the expansion pressing piece, and the expansion pressing piece is connected with the pressing body. The tight contact between the expansion pressing piece and the sealing strip is kept; by adopting the expansion pressing piece capable of actively expanding and the abutting assembly capable of continuously applying pressure, the expansion pressing piece can inject media according to needs to achieve controllable expansion pressing, and compared with single rubber cord fabric, the expansion pressing piece can better adapt to long-term water pressure and stratum deformation, and is not prone to deformation. The sealing strip is simple in structure, not prone to permanent deformation failure and more durable in sealing effect, it is guaranteed that the sealing strip and the duct piece / tunnel portal structure are in tight contact all the time, and local gaps and leakage risks caused by installation errors, uneven gaps or rubber creep deformation are effectively avoided.

Description

Technical Field

[0001] This utility model relates to the field of tunnel construction technology, specifically to a sealing ring clamping device for a subway connecting passage portal. Background Technology

[0002] In the construction of subway connecting passages, the sealing of the tunnel portal is a crucial step in ensuring the waterproof performance of the passage, guaranteeing the safety of the tunnel structure, and maintaining a stable operating environment. Existing sealing ring solutions often employ sealing strips or gaskets made of a single material (such as rubber curtain), which are then pressed firmly into the gap between the tunnel segments and the portal structure using a clamping device. However, this single-material rubber curtain sealing structure has revealed some problems in practical applications:

[0003] If the rubber material fails to fully adhere to the gap surface during installation, or if uneven gaps occur due to construction errors, local voids can easily form, creating leakage channels. Furthermore, under long-term exposure to groundwater pressure and stratum deformation, the rubber material will undergo creep, causing the sealing compression to gradually decrease. Gaps may reappear on the originally tight contact surface, which can also lead to leakage.

[0004] Therefore, the existing single rubber sealing solution is insufficient in terms of sealing reliability and durability, and it is difficult to fully adapt to the complex and variable stress environment and long-term use requirements of subway connecting passages. There is an urgent need for a tunnel portal sealing ring clamping device with more reliable sealing effect and more durable anti-seepage performance.

[0005] Therefore, a sealing ring clamping device for subway connecting passage portals is needed to improve the above-mentioned problems. Utility Model Content

[0006] The purpose of this utility model is to provide a sealing ring clamping device for subway connecting passage portals to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A sealing ring clamping device for a subway connecting passageway includes a clamping body, which is detachable. An expansion clamping member is provided on one side of the clamping body, and an abutment component is provided on the clamping body to apply pressure to one side of the expansion clamping member to maintain close contact between the expansion clamping member and the sealing strip.

[0009] On the other side of the pressing body, there are several locking components arranged in a circumferential array with equal spacing. The locking components abut against the end of the tunnel to keep the pressing body installed stably.

[0010] As a preferred embodiment of this utility model, the clamping body includes a set of symmetrically arranged rings, and the ends of the two rings are connected by a connecting plate, which is fixedly connected to the rings by screws.

[0011] As a preferred embodiment of this utility model, both ring bodies have grooves on their sides for the installation of expansion and clamping components. Several limiting blocks are provided on the outer side of the grooves, and an inner groove is provided on the inner side of the grooves.

[0012] As a preferred embodiment of this utility model, the expansion and pressing component is a bag, and one side of the bag is connected to a can opening, with the end of the can opening extending through the ring to the outside.

[0013] As a preferred embodiment of this utility model, the abutting assembly includes an adjusting rod that is perpendicular to the ring and threadedly connected to it, and an abutting plate disposed in the inner groove. Under the abutting action of the end of the adjusting rod, the abutting plate applies low pressure to the side of the bag, so that the bag remains in close contact with the sealing strip.

[0014] As a preferred embodiment of this utility model, the locking member includes a fixing block that is fixedly connected to the side of the ring body, a screw is threadedly connected to the middle of the fixing block, and an abutment end is provided at the end of the screw.

[0015] As a preferred embodiment of this utility model, the abutting end is a stop block that is fixedly connected to the end of the screw, and the stop block is made of rubber material.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. This utility model adopts an actively expandable expansion clamping component and a continuously pressurized abutment component. The expansion clamping component can achieve controllable expansion and clamping by injecting medium as needed. Compared with a single rubber curtain, it can better adapt to long-term water pressure and stratum deformation, is not prone to permanent deformation failure, and has a more durable sealing effect. It ensures that the sealing strip and the pipe segment / port structure always maintain a tight contact, effectively avoiding the risk of local gaps and leakage caused by installation errors, uneven gaps or rubber creep.

[0018] 2. The clamping body of this utility model adopts a detachable ring structure and abuts against the tunnel end through a locking part with an equally spaced circumferential array. This significantly improves the installation stability and anti-displacement capability of the entire clamping device in complex strata and vibration environments. The clamping body adopts a detachable design, which is convenient for transportation and on-site installation. The locking part adopts a threaded connection abutment end, which is easy to adjust. The design of the material inlet also facilitates the subsequent replenishment or replacement of the expansion clamping part, reducing the maintenance difficulty. Attached Figure Description

[0019] Figure 1 This is a first-view perspective perspective view of the present invention;

[0020] Figure 2 This is a second-view perspective perspective view of the present invention;

[0021] Figure 3 This is a partial structural cross-sectional view of the present invention.

[0022] In the diagram: 1. Ring body; 2. Fixing block; 3. Screw; 4. Connecting plate; 5. Screw; 6. Adjusting rod; 7. Can opening; 8. Abutment block; 9. Limiting block; 10. Tightening plate; 11. Groove; 12. Bag. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0024] To facilitate understanding of this utility model, a more comprehensive description of it will be provided below with reference to relevant embodiments. Several embodiments of this utility model are given. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0025] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0027] Please see Figure 1-3 This utility model provides a technical solution:

[0028] For an example, please refer to... Figure 1 , 23. A sealing ring clamping device for a subway connecting passage tunnel entrance, comprising a clamping body, which is detachably mounted, an expansion clamping member on one side of the clamping body, and an abutment component on the clamping body to apply pressure to one side of the expansion clamping member to maintain tight contact between the expansion clamping member and the sealing strip; and a plurality of locking members on the other side of the clamping body, which are arranged in an equally spaced circular array, and the locking members abut against the tunnel end to maintain the installation stability of the clamping body.

[0029] Please refer to Figure 1 , 2 3. The pressing body includes a set of symmetrically arranged rings 1. The ends of the two rings 1 are connected by a connecting plate 4. The connecting plate 4 is fixedly connected to the rings 1 by screws 5. The sides of the two rings 1 are provided with grooves 11 for the expansion pressing parts. Several limiting blocks 9 are provided on the outside of the grooves 11. The inner side of the grooves 11 is provided with an inner groove.

[0030] The clamping body is composed of two rings 1 connected by a connecting plate 4 and screws 5, forming a ring frame that provides basic structural support for the entire device.

[0031] Please refer to Figure 1 , 2 3. The expansion and pressing component uses a bag 12, and a can opening 7 is connected to one side of the bag 12. The end of the can opening 7 extends through the ring body 1 to the outside. The abutment assembly includes an adjusting rod 6 that is perpendicular to the ring body 1 and threadedly connected, and an abutment plate 10 disposed in the inner groove. Under the abutment action of the end of the adjusting rod 6, the abutment plate 10 applies low pressure to the side of the bag 12, so that the bag 12 keeps in close contact with the sealing strip.

[0032] When unfilled, the bag 12 is small in volume and can be easily placed in the groove 11 on the side of the ring 1 and restricted to a predetermined position by the limiting block 9. A specific medium (such as water, oil or gel) is injected into the bag 12 through the canister port 7. As the medium is injected, the bag will expand evenly, and its expansion force acts on the sealing strip, making it tightly fit in the gap between the tube segment and the portal structure, forming an effective seal.

[0033] The abutment component is responsible for maintaining this compressed state. By rotating the adjusting rod 6 (threaded to the ring 1), the abutment plate 10 can be pushed inward. The abutment plate 10 presses directly against the side of the expanded bag, providing additional and continuous thrust. This ensures that even under formation deformation or water pressure fluctuations, the bag can always press tightly against the sealing strip, maintaining the sealing effect and overcoming the shortcomings of traditional rubber curtains that rely solely on initial compression and passive support.

[0034] The locking component includes a fixing block 2 that is fixedly connected to the side of the ring body 1. A screw 3 is threadedly connected to the middle of the fixing block 2, and an abutment end is provided at the end of the screw 3. The abutment end is a stop block 8 that is fixedly connected to the end of the screw 3, and the stop block 8 is made of rubber.

[0035] On the other side of the ring, a plurality of equally spaced circular array locking components are provided. Each locking component includes a fixing block 2 and a screw 3. The fixing block 2 is fixed on the ring, and the screw 3 passes through the fixing block. The abutting end of the screw 3 is preferably a rubber abutting block 8, which is used to abut against the structure at the end of the tunnel.

[0036] By rotating the screw 3, the rubber blocks 8 at its end can be pressed tightly against the tunnel end. Since these locking elements are evenly spaced, they work together to firmly lock the entire clamping device onto the tunnel end, preventing displacement or loosening during vibration or stress. The rubber blocks 8 also provide a certain degree of cushioning and adaptability to irregular surfaces.

[0037] 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 sealing ring clamping device for a subway connecting passageway portal, comprising a clamping body, characterized in that: The clamping body is detachable, and an expansion clamping component is provided on one side of the clamping body. An abutment component is provided on the clamping body to apply pressure to one side of the expansion clamping component, so as to maintain close contact between the expansion clamping component and the sealing strip. On the other side of the pressing body, there are several locking components arranged in a circumferential array with equal spacing. The locking components abut against the end of the tunnel to keep the pressing body installed stably.

2. The sealing ring clamping device for the subway connecting passageway portal according to claim 1, characterized in that: The clamping body includes a set of symmetrically arranged rings (1), and the ends of the two rings (1) are connected by a connecting plate (4). The connecting plate (4) is fixedly connected to the rings (1) by screws (5).

3. The sealing ring clamping device for the subway connecting passageway portal according to claim 2, characterized in that: Both ring bodies (1) have grooves (11) on their sides for the installation of expansion clamping parts. Several limiting blocks (9) are provided on the outer side of the grooves (11), and an inner groove is provided on the inner side of the grooves (11).

4. The sealing ring clamping device for the subway connecting passageway portal according to claim 3, characterized in that: The expansion and pressing component is a bag (12), and a can opening (7) is connected to one side of the bag (12), and the end of the can opening (7) extends outward through the ring (1).

5. The sealing ring clamping device for the subway connecting passageway portal according to claim 4, characterized in that: The abutting assembly includes an adjusting rod (6) that is perpendicular to and threadedly connected to the ring (1) and an abutting plate (10) disposed in the inner groove. Under the abutting action of the end of the adjusting rod (6), the abutting plate (10) applies low pressure to the side of the bag (12) so that the bag (12) remains in close contact with the sealing strip.

6. The sealing ring clamping device for subway connecting passage portals according to any one of claims 1-5, characterized in that: The locking component includes a fixing block (2) fixedly connected to the side of the ring (1), a screw (3) is threadedly connected to the middle of the fixing block (2), and an abutment end is provided at the end of the screw (3).

7. The sealing ring clamping device for the subway connecting passageway portal according to claim 6, characterized in that: The abutting end adopts an abutting block (8) that is fixedly connected to the end of the screw (3), and the abutting block (8) is made of rubber.

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