Support of tunnel wind bag crossing two lining trolley

Abstract

The utility model relates to the field of submarine tunnel construction, especially a tunnel inner wind bag crosses the support of two lining trolley, including support seat, support seat is equipped with arc groove, and the arc groove is equipped with the protective layer for with wind bag abuts, the top of arc groove is equipped with at least one arc piece, and arc piece is detachably connected with support seat, and arc piece and arc groove enclose and constitute spacing channel, and spacing channel is used for spacing wind bag, when carrying out secondary lining pouring construction in submarine tunnel, the wind bag is separated from the initial support concrete upper portion, and the separated wind bag is supported using the support seat, makes the wind bag far from submarine tunnel ground, avoids the wind bag when hanging in the air partial force too big and leads to the tear, guarantees submarine tunnel air circulation, guarantees submarine tunnel secondary lining construction progress.

Description

Technical Field

[0001] This utility model relates to the field of submarine tunnel construction, and in particular to a support for a tunnel ventilation bag passing through a secondary lining trolley. Background Technology

[0002] During tunnel excavation, due to the relatively enclosed nature of the tunnel, ventilation equipment (blowing or exhaust systems) is needed to replace the air and expel stale gases, ensuring the safety of personnel working inside. For short tunnels, ventilation equipment can be installed at the tunnel entrance. For long tunnels, air ducts are used for ventilation. These air ducts are typically flexible pipes made of PVC-coated fabric, with their vents extending to the tunnel face to ensure air circulation throughout the long tunnel. This is especially important during the construction of long-distance undersea tunnels. In long-distance undersea tunnels, where water often accumulates at the bottom, ventilation bags are typically fixed to the initial support concrete at the top of the tunnel using expansion bolts to prevent water contamination and thus ensure proper ventilation. Since the ventilation bags are fixed to the secondary lining working surface, during secondary lining pouring in long-distance undersea tunnels, the secondary lining pouring trolley may interfere with the ventilation bags' position. The conventional practice is to partially disassemble the ventilation bags, allowing them to pass underneath the secondary lining pouring trolley, thus ensuring both ventilation of the long-distance undersea tunnel and the normal operation of the secondary lining pouring trolley.

[0003] However, existing ventilation bags, after being partially detached from the initial support concrete, can generally only be placed directly on the tunnel floor, which makes them susceptible to water seepage and cement slurry contamination, posing a risk of obstructed ventilation. If the ventilation bags detached from the initial support concrete are partially suspended in the air, they are at risk of tearing due to their own weight. Utility Model Content The purpose of this invention is to overcome the shortcomings of existing technologies in the secondary lining construction of long-distance undersea tunnels, where the ventilation bags are subject to ventilation obstruction and tearing risks after partial removal. This invention provides a support for the ventilation bags to pass through the secondary lining trolley inside the tunnel.

[0004] This utility model provides a support for a tunnel ventilation bag passing through a secondary lining trolley, comprising: A support base, wherein the support base is provided with an arc-shaped groove, and the arc-shaped groove is provided with a protective layer for contacting the air bag; At least one arc-shaped component is provided above the arc-shaped groove. The arc-shaped component is detachably connected to the support base. The arc-shaped component and the arc-shaped groove together form a limiting channel, which is used to limit the air bag. Preferably, the protective layer includes a rubber layer, which is bonded to the arc-shaped groove.

[0005] Preferably, the arc-shaped groove includes a semi-circular groove, the diameter of which is the same as the diameter of the inflated air bag.

[0006] Preferably, the arc-shaped component includes a semi-circular strip, the two ends of which are respectively bolted to the support base, and the diameter of the semi-circular strip is the same as the diameter of the air bag after expansion.

[0007] Preferably, the arc-shaped component has a protective strip on the side near the arc-shaped groove, and the protective strip is used to abut against the air bag.

[0008] Preferably, the arc-shaped groove is provided with the arc-shaped component at both ends.

[0009] Preferably, the support base includes a steel structural frame member.

[0010] Preferably, the support base includes an upper support and a lower support, the upper support and the lower support are slidably connected, and the lower support is provided with a limiting member that can be connected to the upper support.

[0011] Preferably, the upper support is provided with a plurality of vertical rods, the lower support is provided with a plurality of sleeves, the vertical rods are slidably connected to the sleeves, the limiting member is connected to the sleeves, and the limiting member can be connected to the vertical rods; the arc-shaped groove is located on the upper support.

[0012] Preferably, the bottom of the support base is provided with a plurality of guide wheels, and the guide wheels are rotatably connected to the support base.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model provides a support for a ventilation bag passing through a secondary lining trolley in a tunnel. The support base supports the ventilation bag away from the ground of the undersea tunnel, thereby preventing the ventilation bag from contacting the ground, avoiding waterlogging of the tunnel surface, and preventing the ventilation bag from being contaminated by cement slurry, thus ensuring the ventilation performance of the ventilation bag. The arc-shaped groove and the arc-shaped component form a limiting channel. After the ventilation bag passes through the limiting channel, it can prevent the ventilation bag from falling off the support base, thus ensuring the support stability of the ventilation bag, avoiding the ventilation bag from being partially suspended and tearing, reducing the space occupied on the ground of the undersea tunnel, and facilitating the secondary lining pouring construction. 2. This utility model provides a support for a ventilation bag passing through a secondary lining trolley in a tunnel. It has a simple structure and is easy to use. During the secondary lining pouring construction of an undersea tunnel, the ventilation bag is removed from the upper part of the initial concrete support, and the removed part of the ventilation bag is supported by a support seat to keep the ventilation bag away from the ground of the undersea tunnel. This avoids excessive local stress on the ventilation bag when it is suspended in the air, which could lead to tearing. It ensures air circulation in the undersea tunnel and guarantees the progress of the secondary lining construction of the undersea tunnel. It has good economic and practical value. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the support structure of a tunnel ventilation bag passing through a secondary lining trolley according to the present invention. Figure 2 This is a schematic diagram of the arc-shaped component of the support for a tunnel ventilation bag passing through a secondary lining trolley, according to the present invention. Figure 3 This is a partially enlarged structural diagram of the sleeve of the support for the tunnel ventilation bag passing through the secondary lining trolley according to the present invention.

[0015] Marked in the image: 1-Support base, 11-Upper bracket, 111-Vertical rod, 12-Lower bracket, 121-Sleeve, 122-Limiting component, 2-Arc-shaped groove, 3-Protective layer, 4-Arc-shaped component, 41-Protective strip, 5-Guide wheel. Detailed Implementation

[0016] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0017] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of this utility model is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.

[0018] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0019] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0020] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0021] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "equipped with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0022] Example 1 like Figures 1-3 As shown, a support for a tunnel ventilation bag passing through a secondary lining trolley specifically includes a support base 1. An arc-shaped groove 2 is provided on the top of the support base 1. The arc-shaped groove 2 is a through groove and a protective layer 3 is provided on the arc-shaped groove 2 for contacting the ventilation bag. Two arc-shaped pieces 4 are provided above the arc-shaped groove 2. The arc-shaped pieces 4 are detachably connected to the support base 1. The arc-shaped pieces 4 and the arc-shaped groove 2 together form a limiting channel. The limiting channel is used to limit the ventilation bag. The ventilation bag passes through the limiting channel. After the ventilation bag expands, the top of the ventilation bag abuts against the arc-shaped pieces 4, and the bottom of the ventilation bag abuts against the protective layer 3. The support seat 1 supports the air bag away from the ground of the undersea tunnel, thus preventing the air bag from contacting the ground, avoiding waterlogging from the tunnel surface, and preventing the air bag from being contaminated by cement slurry, ensuring the ventilation performance of the air bag. The arc-shaped groove 2 and the arc-shaped component 4 form a limiting channel. After the air bag passes through the limiting channel, it can prevent the air bag from falling off the support seat 1, ensuring the support stability of the air bag, avoiding the air bag from being partially suspended and tearing, reducing the space occupied on the ground of the undersea tunnel, and facilitating the secondary lining pouring construction.

[0023] In one or more embodiments, the protective layer 3 includes a rubber layer bonded to the arc-shaped groove 2. The air bag abuts against the rubber layer under the action of gravity. The top surface of the rubber layer is set as a smooth surface. The rubber layer acts as a flexible buffer to prevent the air bag from being scratched by the support 1, making it easy to use. In some embodiments, the rubber layer and the support 1 are fixed by bolts.

[0024] In one or more embodiments, the arc-shaped groove 2 includes a semi-circular groove with the same diameter as the expanded diameter of the air bag. The arc-shaped component 4 includes a semi-circular strip with both ends bolted to the support base 1. The diameter of the semi-circular strip is the same as the expanded diameter of the air bag. The semi-circular strip and the semi-circular groove together form a circular limiting channel that matches the cross-sectional area of ​​the air bag. After the air bag passes through the limiting channel, it is prevented from being compressed and the cross-sectional area of ​​the air bag from decreasing, thus ensuring the ventilation volume of the air bag. At the same time, the limiting channel can limit the air bag and prevent it from detaching from the support base 1.

[0025] Specifically, a first connecting part is provided at both ends of the semi-circular strip, and a second connecting part is provided on both sides of the arc-shaped groove 2 on the support base 1. The first connecting part and the second connecting part are bolted together.

[0026] In one or more embodiments, the arc-shaped member 4 is provided with a protective strip 41 on the side near the arc-shaped groove 2. The protective strip 41 is used to abut against the air bag. The protective strip 41 is a rubber structural member. After the air bag expands, the air bag abuts against the protective strip 41 to provide flexible support for the air bag and prevent the air bag from breaking.

[0027] In one or more embodiments, arc-shaped parts 4 are provided at both ends of the arc-shaped groove 2. The air bag is fixed more firmly on the support base 1 by the two arc-shaped parts 4, so as to ensure the stability of the air bag during use.

[0028] In one or more embodiments, the support base 1 includes a steel structural frame component. The steel structural frame component is lightweight and easy to move, so that when the secondary lining pouring trolley is completed and moved, the support base 1 can move quickly along with the secondary lining pouring trolley.

[0029] In an optional embodiment, the support base 1 includes an upper support 11 and a lower support 12, the upper support 11 and the lower support 12 are slidably connected, the lower support 12 is provided with a limiting member 122, the limiting member 122 can be connected to the upper support 11, the arc-shaped groove 2 is located at the top of the upper support 11, the height of the support base 1 is adjustable, so that the support height of the support base 1 on the air bag is adjustable. In use, the operator can adjust the height of the arc-shaped groove 2 according to the actual required air bag support height, which is convenient for use.

[0030] In an optional embodiment, the upper support 11 is provided with vertical rods 111, and the lower support 12 is provided with sleeves 121. The vertical rods 111 and sleeves 121 are slidably connected, and the limiting member 122 is connected to the sleeves 121. The limiting member 122 can be connected to the vertical rods 111. Specifically, six vertical rods 111 are provided at the bottom of the upper support 11, and six sleeves 121 are correspondingly provided on the lower support 12. By sliding the vertical rods 111 in the sleeves 121, the upper support 11 can be raised and lowered to achieve height adjustment. Each sleeve 121 is provided with a limiting pin as a limiting member 122. Several through holes are provided on the vertical rods 111. After the upper support 11 is raised to a specified height, the pins are inserted into the through holes to limit the vertical rods 111 and sleeves 121, thereby fixing the upper support 11 at the specified height.

[0031] In one or more embodiments, the bottom of the support base 1 is provided with a plurality of guide wheels 5, which are rotatably connected to the support base 1. The support base 1 is made easy to move by setting the guide wheels 5.

[0032] This utility model discloses a support for a tunnel ventilation bag passing through a secondary lining trolley. Before the secondary lining pouring trolley begins pouring the secondary lining, the ventilation bag is partially removed and placed in an arc-shaped groove 2, so that the support seat 1 supports the ventilation bag. When the secondary lining pouring trolley moves, the position where the ventilation bag separates from the primary support concrete changes. The ventilation bag on the air inlet side is tightened, so that the volume of the ventilation bag located on the support seat 1 is reduced, making it easier to move the support seat 1 to support the ventilation bag. After moving the support seat 1 and the secondary lining pouring trolley, the ventilation bag resumes ventilation.

[0033] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A support for a tunnel ventilation bag passing through a secondary lining trolley, characterized in that, include: Support base (1), the support base (1) is provided with an arc-shaped groove (2), the arc-shaped groove (2) is provided with a protective layer (3) for contacting the air bag; At least one arc-shaped component (4) is provided above the arc-shaped groove (2). The arc-shaped component (4) is detachably connected to the support base (1). The arc-shaped component (4) and the arc-shaped groove (2) together form a limiting channel, which is used to limit the air bag.

2. The support for a tunnel ventilation bag passing through a secondary lining trolley according to claim 1, characterized in that, The protective layer (3) includes a rubber layer, which is bonded to the arc-shaped groove (2).

3. The support for a tunnel ventilation bag passing through a secondary lining trolley according to claim 1, characterized in that, The arc-shaped groove (2) includes a semi-circular groove, the diameter of which is the same as the diameter of the inflated air bag.

4. The support for a tunnel ventilation bag passing through a secondary lining trolley according to claim 3, characterized in that, The arc-shaped component (4) includes a semi-circular strip, the two ends of which are bolted to the support base (1), and the diameter of the semi-circular strip is the same as the diameter of the air bag after expansion.

5. The support for a tunnel ventilation bag passing through a secondary lining trolley according to claim 1, characterized in that, The arc-shaped component (4) has a protective strip (41) on the side near the arc-shaped groove (2), and the protective strip (41) is used to abut against the air bag.

6. The support for a tunnel ventilation bag passing through a secondary lining trolley according to claim 1, characterized in that, The arc-shaped groove (2) is provided with arc-shaped components (4) at both ends.

7. The support for a tunnel ventilation bag passing through a secondary lining trolley according to claim 1, characterized in that, The support base (1) includes a steel structural frame component.

8. The support for a tunnel ventilation bag passing through a secondary lining trolley according to claim 7, characterized in that, The support base (1) includes an upper support (11) and a lower support (12). The upper support (11) and the lower support (12) are slidably connected. The lower support (12) is provided with a limiting member (122), which can be connected to the upper support (11). The arc-shaped groove (2) is located on the upper support (11).

9. The support for a tunnel ventilation bag passing through a secondary lining trolley according to claim 8, characterized in that, The upper support (11) is provided with a plurality of vertical rods (111), and the lower support (12) is provided with a plurality of sleeves (121). The vertical rods (111) are slidably connected to the sleeves (121), and the limiting member (122) is connected to the sleeves (121). The limiting member (122) can be connected to the vertical rods (111).

10. A support for a tunnel ventilation bag passing through a secondary lining trolley according to any one of claims 1-9, characterized in that, The bottom of the support base (1) is provided with several guide wheels (5), and the guide wheels (5) are rotatably connected to the support base (1).

Images