Shield tail sealing device for seabed shield tunnel

Abstract

The utility model relates to the technical field of sealing devices, in particular to a shield tail sealing device for a seabed shield tunnel, which comprises a shield shell, a pipe piece and a sealing assembly, the pipe piece is positioned on the inner side of the shield shell, and the sealing assembly comprises a plurality of sealing parts, a connecting part, a hydraulic cylinder and a butt joint part; the sealing component comprises a sliding block, a shield tail brush, a left threaded seat and a right threaded seat; when the shield tail brushes are installed, the multiple shield tail brushes are sequentially connected through the connecting components, the hydraulic cylinder is connected with the right threaded seat on the shield tail brush located at the tail through the butt joint component, the output rod of the hydraulic cylinder is controlled to stretch out to push the multiple shield tail brushes to the position between the shield shell and the duct piece, and a gap between the shield shell and the duct piece is sealed. When the shield tail brush needs to be replaced, the output rod of the hydraulic cylinder is controlled to retract, and the shield tail brush is moved out of the space between the shield shell and the duct piece to be replaced; the shield tail brush can be conveniently replaced, and time and labor are saved when the shield tail brush is replaced.

Description

Technical Field

[0001] This utility model relates to the field of sealing device technology, and in particular to a shield tail sealing device for submarine shield tunnels. Background Technology

[0002] During the construction of cross-sea shield tunnels, the complex hydrogeological conditions of the strata traversed by the tunnel, high water and soil pressure, and a large soil permeability coefficient pose a significant risk of segment leakage, making the task of sealing and preventing leakage of the shield tunnel extremely challenging. Generally, shield tunnel leakage prevention methods are relatively simple and rely heavily on tail sealing brushes and grouting layers. The waterproofing design of the segment gaps is insufficient, and there is a lack of design and devices to address sudden leakage. Once the grouting layer leaks, the tunnel's seepage prevention effect is difficult to guarantee, seriously affecting the tunnel's service life and safety.

[0003] The existing technology CN208502770U discloses a shield tail sealing device for submarine shield tunnels, including an arc-shaped plate, jacks, hydraulic cylinders, a shield body, a panel, a shield shell, a shield tail sealing brush, tunnel segments, and a pad. The shield body is installed on the working side of the panel. One end of the hydraulic cylinder is welded to the shield body, and the other end is fixedly connected to the jack. The arc-shaped plate is set between the jack and the tunnel segment, and the arc-shaped plate is arranged in a ring around the shield's central axis with several arc-shaped plates tightly connected to each other. The number of arc-shaped plates is the same as the number of jacks. The shield tail brush is installed on the shield shell, and the brush tail is distributed in the gap between the shield shell and the tunnel segment, making interference contact with the tunnel segment. The shield shell is sealed to the hydraulic cylinder through the pad. This utility model solves the problem of insufficient sealing measures between tunnel segments that is common in existing shield tunnel construction, thereby effectively improving the seepage resistance of the tunnel segment joints and ensuring construction safety.

[0004] However, with the above method, the tail brush is under constant pressure on the outside of the tunnel segment and moves relative to the tunnel segment, so the tail brush is often damaged. The existing tail sealing device of the submarine shield tunnel requires the removal of the tunnel segment when replacing the tail brush, which is inconvenient and time-consuming. Utility Model Content

[0005] The purpose of this invention is to provide a tail sealing device for submarine shield tunnels, which facilitates the replacement of the tail brush and saves time and effort when replacing the tail brush.

[0006] To achieve the above objectives, this utility model provides a shield tail sealing device for submarine shield tunnels, comprising a shield shell, segments, and a sealing assembly. The segments are located inside the shield shell, and the sealing assembly includes multiple sealing components, connecting components, a hydraulic cylinder, and a docking component.

[0007] Multiple sealing components are respectively located between the shield shell and the tube segment. Each sealing component includes a slider, a tail brush, a left threaded seat, and a right threaded seat. The slider is located inside the shield shell. The tail brush is fixedly connected to the slider and located between the slider and the tube segment. The left threaded seat is fixedly connected to the slider and located on the side of the slider. The right threaded seat is fixedly connected to the slider and located on the side of the slider away from the left threaded seat. Multiple connecting components are provided, each of which is disposed between two adjacent tail brushes. The hydraulic cylinder is fixedly connected to the shield shell and located on the side of the shield shell. The docking component is disposed on the side of the hydraulic cylinder.

[0008] The connecting component includes a screw, a left-threaded sleeve, and a right-threaded sleeve; the screw is located between the left-threaded seat and the right-threaded seat; the left-threaded sleeve is threadedly connected to the screw and is located on the side of the screw; the right-threaded sleeve is threadedly connected to the screw and is located at the end of the screw away from the left-threaded sleeve.

[0009] The connecting component further includes a left connecting block; the left connecting block is fixedly connected to the screw and is located on the side of the screw.

[0010] The connecting component further includes a right connecting block; the right connecting block is fixedly connected to the screw and is located at the end of the screw away from the left connecting block.

[0011] The docking component includes a threaded post and a docking threaded sleeve; the threaded post is fixedly connected to the hydraulic cylinder output rod and is located on the side of the hydraulic cylinder; the docking threaded sleeve is threadedly connected to the threaded post and is located on the side of the threaded post.

[0012] This utility model discloses a tail seal device for a submarine shield tunnel. When installing the tail brush, one end of a connecting component is connected to a right-hand threaded seat on one tail brush, and the other end is connected to a left-hand threaded seat on another tail brush. This process is repeated to sequentially connect multiple tail brushes using multiple connecting components. Then, a docking component connects a hydraulic cylinder to the right-hand threaded seat on the tail brush. By controlling the extension of the hydraulic cylinder's output rod, multiple tail brushes are pushed between the shield shell and the tunnel lining segments. The slider is in close contact with the shield shell, and the shield... The tail brush is in close contact with the tube segment, and two adjacent tail brushes form an annular sealing cavity between the inner wall of the shield shell and the outer wall of the tube segment. Each row of tail brushes is arranged in a circle, and the spaces between each row are filled with tail grease, thereby sealing the gap between the shield shell and the tube segment. When the tail brush needs to be replaced, the output rod of the hydraulic cylinder is retracted to remove the tail brush from between the shield shell and the tube segment, and then the tail brush can be replaced. In this way, the tail brush can be easily installed and removed, making it easier to replace the tail brush, saving time and effort. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 yes Figure 1 A magnified view of detail A.

[0016] Figure 3 yes Figure 1 A magnified view of detail B.

[0017] Figure 4 This is a schematic diagram of the sealing component of this utility model.

[0018] 101-Shield shell, 102-Tube segment, 103-Sealing component, 104-Connecting component, 105-Hydraulic cylinder, 106-Dating component, 107-Slider, 108-Shield tail brush, 109-Left threaded seat, 110-Right threaded seat, 111-Screw, 112-Left threaded sleeve, 113-Right threaded sleeve, 114-Left connecting block, 115-Right connecting block, 116-Threaded column, 117-Dating threaded sleeve. Detailed Implementation

[0019] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0020] Please see Figures 1-4 ,in, Figure 1 This is a schematic diagram of the overall structure of this utility model. Figure 2 yes Figure 1 A magnified view of detail A. Figure 3 yes Figure 1 A magnified view of detail B. Figure 4 This is a schematic diagram of the sealing component of this utility model.

[0021] This utility model provides a tail sealing device for a submarine shield tunnel, including a shield shell 101, a segment 102, and a sealing assembly. The sealing assembly includes multiple sealing components 103, connecting components 104, a hydraulic cylinder 105, and a docking component 106. The sealing component 103 includes a slider 107, a tail brush 108, a left threaded seat 109, and a right threaded seat 110. The connecting component 104 includes a screw 111, a left threaded sleeve 112, a right threaded sleeve 113, a left connecting block 114, and a right connecting block 115. The docking component 106 includes a threaded post 116 and a docking threaded sleeve 117. The aforementioned solution facilitates the replacement of the tail brush 108, saving time and effort during replacement.

[0022] In this specific embodiment, the tube segment 102 is located inside the shield shell 101; multiple sealing components 103 are respectively located between the shield shell 101 and the tube segment 102, and each sealing component 103 includes a slider 107, a shield tail brush 108, a left threaded seat 109, and a right threaded seat 110; the slider 107 is located inside the shield shell 101; the shield tail brush 108 is fixedly connected to the slider 107 and located between the slider 107 and the tube segment 102; the left threaded seat 109... 9 is fixedly connected to the slider 107 and located on the side of the slider 107; the right threaded seat 110 is fixedly connected to the slider 107 and located on the side of the slider 107 away from the left threaded seat 109; there are multiple connecting parts 104, each of which is disposed between two adjacent shield tail brushes 108; the hydraulic cylinder 105 is fixedly connected to the shield shell 101 and located on the side of the shield shell 101; the docking part 106 is disposed on the side of the hydraulic cylinder 105. When installing the shield tail brush 108, one end of the connecting component 104 is connected to the right threaded seat 110 on one of the shield tail brushes 108, and the other end of the connecting component 104 is connected to the left threaded seat 109 on another shield tail brush 108. This process is repeated to sequentially connect multiple shield tail brushes 108 via multiple connecting components 104. Then, the docking component 106 connects the hydraulic cylinder 105 to the right threaded seat 110 on the tail of the shield tail brush 108. By controlling the output rod of the hydraulic cylinder 105 to extend, multiple shield tail brushes 108 are pushed between the shield shell 101 and the tube segment 102. The slider 107 is in close contact with the shield shell 101, and the shield tail brushes 108 are in close contact with the tube segment 102. 02. The shield tail brushes 108 are in close contact, forming an annular sealing cavity between the inner wall of the shield shell 101 and the outer wall of the tube segment 102. Each row of shield tail brushes 108 is arranged in a circle, and the space between each row of shield tail brushes 108 is filled with shield tail grease, thereby sealing the gap between the shield shell 101 and the tube segment 102. When it is necessary to replace the shield tail brushes 108, the output rod of the hydraulic cylinder 105 is retracted to remove the shield tail brushes 108 from between the shield shell 101 and the tube segment 102, and then the shield tail brushes 108 can be replaced. In this way, it is convenient to install and remove the shield tail brushes 108, so as to replace the shield tail brushes 108, saving time and effort when replacing the shield tail brushes 108.

[0023] The screw 111 is located between the left threaded seat 109 and the right threaded seat 110; the left threaded sleeve 112 is threadedly connected to the screw 111 and is located on the side of the screw 111; the right threaded sleeve 113 is threadedly connected to the screw 111 and is located at the end of the screw 111 away from the left threaded sleeve 112. The left threaded seat 109 has matching threads on its outer side and the right threaded sleeve 113 has matching threads on its inner side. The left threaded seat 109 and the right threaded sleeve 113 can be connected by threads. The right threaded seat 110 has matching threads on its outer side and the left threaded sleeve 112 has matching threads on its inner side. The right threaded seat 110 and the left threaded sleeve 112 can be connected by threads. The left threaded sleeve 112 and the right threaded sleeve 113 are connected to the screw 111 by threads. When installing the shield tail brush 108, one end of the screw 111 is aligned with the left threaded seat 109 on one of the sliders 107. The other end of 111 is aligned with the right threaded seat 110 on another slider 107. The left threaded sleeve 112 is rotated so that the left threaded sleeve 112 is outside the screw 111 and the right threaded seat 110. The right threaded sleeve 113 is rotated so that the left threaded sleeve 112 is outside the screw 111 and the left threaded seat 109. The two shield tail brushes 108 are connected by the screw 111, the left threaded sleeve 112, the right threaded sleeve 113, the left threaded seat 109 and the right threaded seat 110. The above steps are repeated to connect multiple shield tail brushes 108 in sequence.

[0024] Secondly, the left connecting block 114 is fixedly connected to the screw 111 and is located on the side of the screw 111. The right threaded seat 110 is provided with a slot that matches the left connecting block 114. Inserting the left connecting block 114 into the inside of the right threaded seat 110 facilitates the docking of the screw 111 with the right threaded seat 110.

[0025] Meanwhile, the right connecting block 115 and the screw 111 are fixedly connected, and the right connecting block 115 is located at the end of the screw 111 away from the left connecting block. The left threaded seat 109 is provided with a slot that matches the right connecting block 115. Inserting the right connecting block 115 into the inside of the left threaded seat 109 facilitates the docking of the screw 111 with the left threaded seat 109.

[0026] Additionally, the threaded post 116 is fixedly connected to the output rod of the hydraulic cylinder 105 and is located on the side of the hydraulic cylinder 105; the mating threaded sleeve 117 is threadedly connected to the threaded post 116 and is located on the side of the threaded post 116. The inner side of the mating threaded sleeve 117 is provided with a matching thread to the outer side of the right threaded seat 110. The mating threaded sleeve 117 and the right threaded seat 110 can be connected by threads, so that the threaded post 116 is mated with the right threaded seat 110 on the tail brush 108 at the tail end, and then the mating threaded sleeve 117 is rotated so that the mating threaded sleeve 117 is outside the threaded post 116 and the right threaded seat 110, thereby connecting the threaded post 116 and the right threaded seat 110.

[0027] When using this utility model, when installing the shield tail brush 108, align one end of the screw 111 with the left threaded seat 109 on one of the sliders 107, and align the other end of the screw 111 with the right threaded seat 110 on the other slider 107. Rotate the left threaded sleeve 112 so that the left threaded sleeve 112 is outside the screw 111 and the right threaded seat 110. Rotate the right threaded sleeve 113 so that the left threaded sleeve 112 is outside the screw 111 and the left threaded seat 109. Two shield tail brushes 108 are connected via the screw 111, the left threaded sleeve 112, the right threaded sleeve 113, the left threaded seat 109, and the right threaded seat 110. This process is repeated to connect multiple shield tail brushes 108 sequentially. Then, the threaded post 116 is aligned with the right threaded seat 110 on the tail brush 108. The alignment threaded sleeve 117 is then rotated so that it is positioned outside the threaded post 116 and the right threaded seat 110, thereby... The threaded post 116 is connected to the right threaded seat 110. By controlling the output rod of the hydraulic cylinder 105 to extend, multiple shield tail brushes 108 are pushed between the shield shell 101 and the tube segment 102. The slider 107 is in close contact with the shield shell 101, and the shield tail brushes 108 are in close contact with the tube segment 102. Adjacent shield tail brushes 108 form an annular sealing cavity between the inner wall of the shield shell 101 and the outer wall of the tube segment 102. Each row of shield tail brushes 108 is arranged in a circle. The gap between the shield shell 101 and the tube segment 102 is filled with shield tail grease to seal it. When the shield tail brush 108 needs to be replaced, the output rod of the hydraulic cylinder 105 is retracted to remove the shield tail brush 108 from between the shield shell 101 and the tube segment 102, and then the shield tail brush 108 can be replaced. In this way, the shield tail brush 108 can be easily installed and removed, so as to replace the shield tail brush 108, saving time and effort.

[0028] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A tail sealing device for a submarine shield tunnel, comprising a shield shell and segments, wherein the segments are located inside the shield shell, characterized in that, It also includes sealing components; The sealing assembly includes multiple sealing components, connecting components, hydraulic cylinders, and docking components; Multiple sealing components are respectively located between the shield shell and the tube segment. Each sealing component includes a slider, a tail brush, a left threaded seat, and a right threaded seat. The slider is located inside the shield shell. The tail brush is fixedly connected to the slider and located between the slider and the tube segment. The left threaded seat is fixedly connected to the slider and located on the side of the slider. The right threaded seat is fixedly connected to the slider and located on the side of the slider away from the left threaded seat. Multiple connecting components are provided, each of which is disposed between two adjacent tail brushes. The hydraulic cylinder is fixedly connected to the shield shell and located on the side of the shield shell. The docking component is disposed on the side of the hydraulic cylinder.

2. The shield tail sealing device for a submarine shield tunnel as described in claim 1, characterized in that, The connecting component includes a screw, a left-threaded sleeve, and a right-threaded sleeve; the screw is located between the left-threaded seat and the right-threaded seat; the left-threaded sleeve is threadedly connected to the screw and is located on the side of the screw; the right-threaded sleeve is threadedly connected to the screw and is located at the end of the screw away from the left-threaded sleeve.

3. A shield tail sealing device for a submarine shield tunnel as described in claim 2, characterized in that, The connecting component also includes a left connecting block; the left connecting block is fixedly connected to the screw and is located on the side of the screw.

4. A shield tail sealing device for a submarine shield tunnel as described in claim 3, characterized in that, The connecting component also includes a right connecting block; the right connecting block is fixedly connected to the screw and is located at the end of the screw away from the left connecting block.

5. A shield tail sealing device for a submarine shield tunnel as described in claim 4, characterized in that, The docking component includes a threaded post and a docking threaded sleeve; the threaded post is fixedly connected to the hydraulic cylinder output rod and is located on the side of the hydraulic cylinder; the docking threaded sleeve is threadedly connected to the threaded post and is located on the side of the threaded post.

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