Temporary limiting device for final butt joint of immersed tunnel

Abstract

The utility model belongs to the technical field of immersed tunnels, and discloses a temporary limiting device for final butt joint of immersed tunnels, which comprises a first limiting frame and a second limiting frame, the top end of the first limiting frame is provided with a pair of limiting straight grooves, and the top end of the first limiting frame is provided with a pair of inclined guide plates on two sides of each limiting straight groove. A mounting groove is formed in the top end of the interior of the second limiting frame, a pair of first hydraulic rods is mounted in the mounting groove, and the output ends of the pair of first hydraulic rods penetrate through one side of the second limiting frame and extend to the outer side of the second limiting frame. According to the device, a first limiting frame and a second limiting frame can be rapidly placed at the joint of the two immersed tunnels, the first limiting frame and the second limiting frame are fixed to immersed tunnel pipe joints through extension of a second hydraulic rod, rapid alignment of the two immersed tunnels is achieved through clamping of a limiting straight groove and a trapezoidal block, and the two immersed tunnels can be rapidly aligned. And therefore, the flexibility of the temporary limiting device is improved, and the working efficiency during final butt joint is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of immersed tube tunnels, and more specifically, relates to a temporary limiting device for the final docking of immersed tube tunnels. Background Art

[0002] An immersed tube tunnel is a tunnel constructed by prefabricating sections of pipe with temporary waterstops at both ends. These sections are then floated to the tunnel axis and sunk into a pre-dug trench (foundation trench) to complete the underwater connection between the sections. The temporary waterstops are then removed, the foundation trench is backfilled to protect the immersed tubes, and the tunnel's internal facilities are laid, thus forming a complete underwater passage. The temporary limit device used for the final docking of the immersed tube tunnel refers to a device used during the construction of the immersed tube tunnel to ensure that the two adjacent immersed tubes can accurately and smoothly complete the docking operation.

[0003] Some of the temporary devices currently used for the final docking of immersed tube tunnels are usually fixed directly on the top of the immersed tube tunnel. Due to the difficulty of submarine operations, it takes a lot of time for workers to dismantle the temporary limiting devices, which affects the efficiency of the final docking.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a temporary limiting device for the final docking of the immersed tube tunnel is provided, in order to achieve a more practical purpose. Utility Model Content

[0005] In order to solve the above technical problems, the present invention provides a temporary limiting device for the final docking of immersed tube tunnels, which is achieved by the following specific technical means:

[0006] The top of the first limit frame is provided with a pair of limiting straight grooves, and the top of the first limit frame is provided with a pair of inclined guide plates at positions on both sides of each limiting straight groove. The top of the second limit frame is provided with a mounting groove, and a pair of first hydraulic rods are installed in the mounting groove, and the output ends of the pair of first hydraulic rods pass through one side of the second limit frame and extend to the outside of the second limit frame, and a T-shaped block is installed on one side of the output end of the first hydraulic rod, and a pair of slides are symmetrically provided on the inner side of the first limit frame and the inner side of the second limit frame, and an extrusion plate is slidably installed in the slide, and a mounting seat is installed on one side of the slide, and a second hydraulic rod is installed in the mounting seat, and the output end of the second hydraulic rod passes through one side of the mounting seat and is connected to the extrusion plate.

[0007] Furthermore, the size of the first limiting frame and the size of the second limiting frame both match the size of the immersed tube tunnel.

[0008] Furthermore, the position and size of the pair of T-shaped blocks match the position and size of the pair of limiting straight grooves.

[0009] Furthermore, an anti-slip pad is installed on the side of the extrusion plate away from the second hydraulic rod.

[0010] Furthermore, each of the slide grooves is provided through-through.

[0011] Furthermore, a plurality of drainage holes are provided through one side of the extrusion plate.

[0012] Furthermore, a plurality of hanging frames are installed on the top of the first limiting frame and the top of the second limiting frame.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The temporary limiting device for the final docking of immersed tube tunnels in the present invention facilitates the rapid placement of the first limiting frame and the second limiting frame at the connection of the two immersed tube tunnels through the coordinated use of the limiting straight groove, the inclined guide plate, the mounting groove, the first hydraulic rod, the T-shaped block, the slide groove, the extrusion plate, the mounting seat, the second hydraulic rod, the anti-slip pad, the drainage hole and the lifting frame, and fixes the first limiting frame and the second limiting frame on the pipe section of the immersed tube tunnel respectively by extending the second hydraulic rod, and realizes the rapid alignment of the two immersed tube tunnels through the engagement of the limiting straight groove and the trapezoidal block, thereby improving the flexibility of the temporary limiting device and the working efficiency during the final docking. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of the first limiting frame and the second limiting frame of the utility model when they are installed.

[0016] Figure 2 It is a three-dimensional schematic diagram of the first limiting frame of the utility model.

[0017] Figure 3 It is a side sectional schematic diagram of the inner structure of the chute of the utility model.

[0018] Figure 4 It is a top sectional schematic diagram of the inner structure of the second limiting frame of the utility model.

[0019] In the figure, the corresponding relationship between the component names and the drawing numbers is as follows:

[0020] 1. First limiting frame; 2. Second limiting frame; 3. Limiting straight groove; 4. Oblique guide plate; 5. Mounting groove; 6. First hydraulic rod; 7. T-shaped block; 8. Slide groove; 9. Extrusion plate; 10. Mounting seat; 11. Second hydraulic rod; 12. Anti-slip pad; 13. Drain hole; 14. Lifting frame. DETAILED DESCRIPTION

[0021] The following is a further detailed description of the embodiments of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0022] In the description of this utility model, unless otherwise specified, "plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction, and therefore should not be construed as limiting this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0024] Example:

[0025] As attached Figure 1 To the attached Figure 4 As shown:

[0026] The utility model provides a temporary limiting device for the final docking of an immersed tube tunnel, comprising a first limiting frame 1 and a second limiting frame 2, a pair of limiting straight grooves 3 being provided at the top of the first limiting frame 1, a pair of inclined guide plates 4 being installed at the positions on both sides of each limiting straight groove 3 at the top of the first limiting frame 1, a mounting groove 5 being provided at the top inside the second limiting frame 2, a pair of first hydraulic rods 6 being installed in the mounting groove 5, and the output ends of the pair of first hydraulic rods 6 both pass through one side of the second limiting frame 2 and extend to the outside of the second limiting frame 2, a T-shaped block 7 being installed on one side of the output end of the first hydraulic rod 6, a pair of slide grooves 8 being symmetrically provided on the inner side of the first limiting frame 1 and the inner side of the second limiting frame 2, an extrusion plate 9 being slidably installed in the slide groove 8, a mounting seat 10 being installed on one side of the slide groove 8, a second hydraulic rod 11 being installed in the mounting seat 10, and the output end of the second hydraulic rod 11 passing through one side of the mounting seat 10 and connected to the extrusion plate 9.

[0027] Among them, the size of the first limit frame 1 and the size of the second limit frame 2 are matched with the size of the immersed tube tunnel, which facilitates the rapid installation of the first limit frame 1 and the second limit frame 2 on the two immersed tube tunnel pipe sections, and enables the first limit frame 1 and the second limit frame 2 to fit tightly with the immersed tube tunnel pipe sections, thereby improving the stability of the first limit frame 1 and the second limit frame 2 during use and improving the limiting effect.

[0028] Among them, the position and size of a pair of T-shaped blocks 7 match the position and size of a pair of limiting straight grooves 3, so that during the descent of the immersed tube tunnel pipe section and the second limiting frame 2, the T-shaped blocks 7 can be stuck in the limiting straight grooves 3, and through the contraction of the first hydraulic rod 6, the immersed tube tunnel pipe section is pulled to move, thereby assisting the alignment and movement of the immersed tube tunnel pipe section.

[0029] Among them, the extrusion plate 9 is installed with an anti-slip pad 12 on the side away from the second hydraulic rod 11. Through the extension of the second hydraulic rod 11, the extrusion plate 9 can be tightly attached to one side of the immersed tube tunnel section, and the anti-slip pad 12 increases the friction between the extrusion plate 9 and the immersed tube tunnel section, thereby improving the stability of the first limit frame 1 and the second limit frame 2 after installation.

[0030] Among them, each slide groove 8 is set through, and each slide groove 8 passes through one side of the first limit frame 1 and the second limit frame 2 respectively, so as to facilitate the discharge of water accumulated between the extrusion plate 9 and the immersed tube tunnel section during the movement of the extrusion plate 9, thereby preventing water from accumulating between the extrusion plate 9 and the immersed tube tunnel and affecting the movement of the extrusion plate 9.

[0031] A plurality of drainage holes 13 are provided on one side of the extrusion plate 9 to facilitate drainage of water accumulated between the extrusion plate 9 and the immersed tunnel section during movement of the extrusion plate 9 .

[0032] Among them, several lifting frames 14 are installed on the top of the first limiting frame 1 and the top of the second limiting frame 2, which are convenient for lifting the first limiting frame 1 and the second limiting frame 2 and convenient for controlling the movement of the first limiting frame 1 and the second limiting frame 2.

[0033] The working principle of this embodiment is as follows: after the position of the immersed tunnel pipe section is preliminarily aligned, the staff places the first limiting frame 1 on one side of the already installed immersed tunnel pipe section, and places the second limiting frame 2 on the side of the immersed tunnel pipe section to be installed, so that the first limiting frame 1 and the second limiting frame 2 are close to the connection between the two immersed tunnel pipe sections, and then the second hydraulic rod 11 is opened to extend the second hydraulic rod 11 and drive the extrusion plate 9 to move. During the movement of the extrusion plate 9, the water accumulated between the extrusion plate 9 and the immersed tunnel pipe section is discharged from the drainage hole 13 and the chute 8, so that the extrusion plate 9 can be tightly attached to one side of the immersed tunnel pipe section, thereby fixing the first limiting frame 1 and the second limiting frame 2. Then the staff moves the second limiting frame installed. The immersed tube tunnel section of the frame 2 is controlled to move the T-shaped block 7 to a position directly above the limiting straight groove 3, and then the immersed tube tunnel section with the second limiting frame 2 is controlled to descend, so that the T-shaped block 7 completely enters the limiting straight groove 3 along the inclined guide plate 4, and then the first hydraulic rod 6 is controlled to retract. Since the T-shaped block 7 is limited by the limiting straight groove 3, when aligning and splicing two immersed tube tunnels, it assists in pulling the immersed tube tunnel section to be installed. After the alignment is completed, the staff can perform the final docking. After the final docking is completed, the staff controls the second hydraulic rod 11 to retract so that the extrusion plate 9 is no longer in close contact with the immersed tube tunnel section, and then uses the hoist to lift the second limiting frame 2 and the first limiting frame 1 in turn, and the limiting device can be quickly removed for easy reuse.

[0034] The embodiments of the present invention are provided for purposes of illustration and description and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for specific applications.

Claims

1. A temporary limiting device for final butt joint of an immersed tube tunnel, comprising a first limiting frame (1) and a second limiting frame (2), characterized in that: The top of the first limiting frame (1) is provided with a pair of limiting straight grooves (3), and the top of the first limiting frame (1) is provided with a pair of inclined guide plates (4) at positions on both sides of each limiting straight groove (3). The top of the inside of the second limiting frame (2) is provided with a mounting groove (5), and a pair of first hydraulic rods (6) are mounted in the mounting groove (5), and the output ends of the pair of first hydraulic rods (6) both pass through one side of the second limiting frame (2) and extend to the outside of the second limiting frame (2). A T-shaped block (7) is installed on one side of the output end of a hydraulic rod (6), a pair of slide grooves (8) are symmetrically provided on the inner side of the first limiting frame (1) and the inner side of the second limiting frame (2), an extrusion plate (9) is slidably installed in the slide groove (8), a mounting seat (10) is installed on one side of the slide groove (8), a second hydraulic rod (11) is installed in the mounting seat (10), and the output end of the second hydraulic rod (11) passes through one side of the mounting seat (10) and is connected to the extrusion plate (9).

2. The temporary limiting device for final butt joint of immersed tube tunnels according to claim 1, characterized in that: The size of the first limiting frame (1) and the size of the second limiting frame (2) both match the size of the immersed tube tunnel.

3. The temporary limiting device for final butt joint of immersed tube tunnels according to claim 1, characterized in that: The position and size of the pair of T-shaped blocks (7) match the position and size of the pair of limiting straight grooves (3).

4. The temporary limiting device for final butt joint of immersed tube tunnels according to claim 1, characterized in that: The squeezing plate (9) is provided with an anti-slip pad (12) on a side away from the second hydraulic rod (11).

5. The temporary limiting device for final butt joint of immersed tube tunnels according to claim 1, characterized in that: Each of the sliding grooves (8) is arranged through-through.

6. The temporary limiting device for final butt joint of immersed tube tunnels according to claim 1, characterized in that: A plurality of drainage holes (13) are provided through one side of the extrusion plate (9).

7. The temporary limiting device for final butt joint of immersed tube tunnels according to claim 1, characterized in that: A plurality of hanging frames (14) are installed on the top of the first limiting frame (1) and the top of the second limiting frame (2).

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