Comb tooth plate type bridge expansion joint with limiting device

Abstract

The utility model discloses a kind of comb tooth plate bridge expansion joints with limiting device, it is related to comb tooth plate bridge expansion joint technical field, the comb tooth plate bridge expansion joint with limiting device, including fixed comb tooth plate, the inside wall of one side of fixed comb tooth plate is provided with movable comb tooth plate, the bottom surface of fixed comb tooth plate is provided with double fixed component, the double fixed component includes first extension plate and insertion slot, the bottom surface of fixed comb tooth plate is installed to first extension plate, the inside wall of first extension plate is installed with connecting column, the two sides of first extension plate are provided with second nut, and the second nut is used to be fixedly connected with connecting column and first extension plate.The utility model is through the combination design of first extension plate plus connecting column and insertion plate plus insertion slot, realize the double anchoring of longitudinal and transverse, significantly improve the shear resistance and anti-pulling capacity of fixed comb tooth plate, adapt to the extreme load of large-span bridge.

Description

Technical Field

[0001] This utility model relates to the technical field of comb-plate type bridge expansion joints, specifically a comb-plate type bridge expansion joint with a limiting device. Background Technology

[0002] The comb-plate type bridge expansion joint with limiting device is a steel structure device specifically designed for bridge expansion joints. It uses a comb-plate structure to enable the bridge to adapt to longitudinal, lateral and vertical deformation under temperature changes and loads.

[0003] When existing comb-plate bridge expansion joints with limiting devices are completed and put into normal use, the nuts that fix the fibers are all on the inner wall of the comb plate and exposed to the outside, and are closely spaced. When exposed to long-term traffic pressure and vibration, as well as weather conditions, they may rust, which shortens their lifespan and indirectly leads to a decline in the function of the comb plate. Utility Model Content

[0004] This utility model provides a comb-plate type bridge expansion joint with a limiting device, which has the advantages of double fixing at the bottom and extended service life. It solves the problem that existing comb-plate type bridge expansion joints with limiting devices, when completed and put into normal use, have their fiber fixing nuts exposed to the outside environment on the inner wall of the comb plate and are closely spaced. When exposed to long-term traffic pressure and vibration, as well as weather conditions, they will rust, which shortens their service life and indirectly leads to a decline in the function of the comb plate.

[0005] To achieve the goal of double fixation at the bottom and extended service life, this utility model provides the following technical solution: a comb-plate type bridge expansion joint with a limiting device, comprising a fixed comb plate, a movable comb plate provided on one inner wall of the fixed comb plate, and a double fixing assembly provided on the bottom surface of the fixed comb plate, wherein: The dual fixing assembly includes a first extension plate and an insertion slot. The first extension plate is installed on the bottom surface of the fixing comb plate. A connecting post is installed on the inner wall of the first extension plate. Second nuts are provided on both sides of the first extension plate. The second nuts are used to fix the connecting post and the first extension plate together. The insertion slot is located on one side of the fixed comb plate. An insertion plate is provided on the inner wall of the insertion slot. A second threaded post is installed on the top surface of the insertion plate. A third nut for fixing the insertion plate to the inner wall of the insertion slot is installed on the bottom of the second threaded post.

[0006] As a preferred embodiment of this utility model, a fixing frame is also installed on the bottom surface of the movable comb plate. The fixing frame is used to fix the movable comb plate to the bridge with a nut. A fixing plate is provided on one side of the movable comb plate, and a rotating column is also installed on one side of the movable comb plate.

[0007] As a preferred technical solution of this utility model, the dual fixing assembly further includes a first threaded post, which is disposed on the inner wall of the fixing comb plate. A first nut is installed on the top of the first threaded post. Multiple fixing threads are provided on the outer surface of the connecting post. A second extension plate is also installed on the bottom surface of the fixing comb plate.

[0008] As a preferred embodiment of this utility model, the rotating columns are two symmetrically fixedly installed on both sides of the movable comb plate, and each pair of adjacent rotating columns is inserted into the inner wall of the fixed plate. The fixed plate is set on the top of the fixed frame and is fixedly connected to the fixed frame by nuts.

[0009] As a preferred technical solution of this utility model, the first threaded post is a plurality of equidistantly arranged on the inner wall of the fixed comb plate and all of them are fixedly connected to each other between the fixed comb plate and the first threaded post by the first nut. The first threaded post is fixedly connected to the bridge. The first extension plate is a plurality of equidistantly fixedly installed on the bottom surface of the fixed comb plate. Each first extension plate has a second nut on both sides. The inner wall of the plurality of first extension plates is in contact with the outer surface of a connecting post.

[0010] As a preferred technical solution of this utility model, the inner wall of each of the fixed threads is sleeved with a fixed thread on the outer surface of a connecting post. The insertion groove is opened on one side of the fixed comb plate, and the insertion plate is installed on the other side of the fixed comb plate. The insertion plate is inserted into the inner wall of the insertion groove. The bottom surface of the insertion plate is fixedly connected to the two second threaded posts. A third nut is sleeved on the outer surface of each second threaded post.

[0011] As a preferred technical solution of this utility model, the second extension plate is installed on one end of the bottom surface of the fixed comb plate, and a second nut is provided on both sides of the second extension plate and is sleeved with the fixing thread opened on the outer surface of the connecting column to enhance the connection stability between each two adjacent fixed comb plates.

[0012] Compared with the prior art, this utility model provides a comb-plate type bridge expansion joint with a limiting device, which has the following advantages: This comb-plate bridge expansion joint with a limiting device achieves dual anchoring in both the longitudinal and lateral directions through a combination design of a first extension plate plus connecting column and an insertion plate plus insertion groove. This significantly improves the shear resistance and pull-out resistance of the fixed comb plate, making it suitable for extreme loads on long-span bridges.

[0013] Furthermore, the connecting fasteners of the double-fixed components are all installed on the bottom surface and inside the bridge, which greatly reduces rainwater erosion and extends the service life of the device. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the overall structure of this utility model from another angle; Figure 3 This is a schematic diagram of the overall dual fixing component of this utility model; Figure 4 This is a schematic diagram of some parts of the dual fixing component of this utility model; Figure 5 This is an exploded view of some parts of the dual fixing component of this utility model.

[0015] In the diagram: 1. Fixed comb plate; 2. Movable comb plate; 3. Fixing frame; 4. Fixing plate; 5. Rotating column; 6. Double fixing assembly; 600. First threaded column; 601. First nut; 602. First extension plate; 603. Connecting column; 604. Fixing thread; 605. Second nut; 606. Insertion slot; 607. Insertion plate; 608. Second threaded column; 609. Third nut; 610. Second extension plate. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0017] Please see Figures 1-2 This utility model discloses a comb-plate type bridge expansion joint with a limiting device, including a fixed comb plate 1, a movable comb plate 2 provided on one inner wall of the fixed comb plate 1, and a double fixing assembly 6 provided on the bottom surface of the fixed comb plate 1, wherein: The dual fixing assembly 6 includes a first extension plate 602 and an insertion slot 606. The first extension plate 602 is installed on the bottom surface of the fixing comb plate 1. A connecting post 603 is installed on the inner wall of the first extension plate 602. Second nuts 605 are provided on both sides of the first extension plate 602. The second nuts 605 are used to fix the connecting post 603 to the first extension plate 602. An insertion slot 606 is provided on one side of the fixed comb plate 1. An insertion plate 607 is provided on the inner wall of the insertion slot 606. A second threaded post 608 is installed on the top surface of the insertion plate 607. A third nut 609 is installed at the bottom of the second threaded post 608 for fixing the insertion plate 607 to the inner wall of the insertion slot 606.

[0018] Furthermore, a fixing frame 3 is installed on the bottom surface of the movable comb plate 2. The fixing frame 3 is used to fix the movable comb plate 2 to the bridge with nuts. A fixing plate 4 is provided on one side of the movable comb plate 2, and a rotating column 5 is also installed on one side of the movable comb plate 2.

[0019] Furthermore, the dual fixing assembly 6 also includes a first threaded post 600, which is disposed on the inner wall of the fixing comb plate 1. A first nut 601 is installed on the top of the first threaded post 600. Multiple fixing threads 604 are provided on the outer surface of the connecting post 603. A second extension plate 610 is also installed on the bottom surface of the fixing comb plate 1.

[0020] Place the fixed comb plate 1 on one side of the bridge expansion joint, aligning it with the bridge embedded parts via the first threaded post 600. Secure the fixed comb plate 1 to the first threaded post 600 using the first nut 601, ensuring verticality and horizontality. Weld or bolt the first extension plate 602 to the bottom surface of the fixed comb plate 1. Insert the connecting post 603 into the inner wall of the first extension plate 602, and lock it with the second nut 605 via the fixing thread 604, forming preliminary anchoring. Example

[0021] Based on the above embodiment 1, please refer to Figures 3-5 The rotating columns 5 are two symmetrically fixedly installed on both sides of the movable comb plate 2. Each pair of adjacent rotating columns 5 are inserted into the inner wall of the fixed plate 4. The fixed plate 4 is set on the top of the fixed frame 3 and is fixedly connected to the fixed frame 3 by nuts.

[0022] Furthermore, multiple first threaded posts 600 are equidistantly arranged on the inner wall of the fixed comb plate 1, and the fixed comb plate 1 is fixedly connected to each other between the first threaded posts 600 by first nuts 601. The first threaded posts 600 are fixedly connected to the bridge. Multiple first extension plates 602 are equidistantly fixedly installed on the bottom surface of the fixed comb plate 1. Each first extension plate 602 has a second nut 605 on both sides. The inner walls of the multiple first extension plates 602 are in contact with the outer surface of a connecting post 603.

[0023] Furthermore, the inner wall of each fixing thread 604 is sleeved with the fixing thread 604 on the outer surface of a connecting post 603. An insertion slot 606 is opened on one side of the fixing comb plate 1, and an insertion plate 607 is installed on the other side of the fixing comb plate 1. The insertion plate 607 is inserted into the inner wall of the insertion slot 606. The bottom surface of the insertion plate 607 is fixedly connected to the two second threaded posts 608. A third nut 609 is sleeved on the outer surface of each second threaded post 608.

[0024] Furthermore, the second extension plate 610 is installed at one end of the bottom surface of the fixed comb plate 1. A second nut 605 is provided on both sides of the second extension plate 610 and is sleeved with the fixing thread 604 opened on the outer surface of the connecting post 603 to enhance the connection stability between each two adjacent fixed comb plates 1.

[0025] At the connection point of adjacent fixed comb plates 1, an insertion plate 607 is inserted into the insertion slot 606. The insertion plate 607 is fixed to the side wall of the fixed comb plate 1 via a second threaded post 608 and a third nut 609, enhancing lateral connection stability. A second extension plate 610 is installed at one end of the bottom surface of the fixed comb plate 1, further reinforced by a connecting post 603. The movable comb plate 2 is placed on the opposite side of the fixed comb plate 1 and connected to the bridge embedded part via a fixing frame 3. The fixing frame 3 is locked to the movable comb plate 2 with a nut, ensuring it can rotate slightly along the axis of the rotating post 5.

[0026] The working principle and usage process of this utility model are as follows: The fixed comb plate 1 is placed on one side of the bridge expansion joint and aligned with the bridge embedded parts through the first threaded post 600. The fixed comb plate 1 and the first threaded post 600 are fixed with the first nut 601 to ensure verticality and horizontality.

[0027] First layer of fixation: The first extension plate 602 is welded or bolted to the bottom surface of the fixed comb plate 1. The connecting post 603 is inserted into the inner wall of the first extension plate 602 and locked with the second nut 605 through the fixing thread 604 to form a preliminary anchoring.

[0028] Second layer of fixation: At the connection point of adjacent fixed comb plates 1, insert plate 607 is inserted into insertion slot 606. Insert plate 607 is fixed to the side wall of fixed comb plate 1 by second threaded post 608 and third nut 609 to enhance lateral connection stability. Second extension plate 610 is installed at one end of the bottom surface of fixed comb plate 1 and further reinforced by connecting post 603.

[0029] Installation of the movable comb plate: Place the movable comb plate 2 on the opposite side of the fixed comb plate 1 and connect it to the bridge embedded part through the fixing bracket 3. Use nuts to lock the fixing bracket 3 and the movable comb plate 2 to ensure that it can rotate slightly along the axis of the rotating column 5.

Claims

1. A comb-plate type bridge expansion joint with a limiting device, comprising a fixed comb plate (1), wherein a movable comb plate (2) is provided on one inner wall of the fixed comb plate (1), characterized in that: The bottom surface of the fixed comb plate (1) is provided with a double fixing component (6), wherein: The dual fixing assembly (6) includes a first extension plate (602) and an insertion slot (606). The first extension plate (602) is installed on the bottom surface of the fixed comb plate (1). A connecting post (603) is installed on the inner wall of the first extension plate (602). Second nuts (605) are provided on both sides of the first extension plate (602). The second nuts (605) fix the connecting post (603) to the first extension plate (602). The insertion slot (606) is located on one side of the fixed comb plate (1). An insertion plate (607) is provided on the inner wall of the insertion slot (606). A second threaded post (608) is installed on the top surface of the insertion plate (607). A third nut (609) for fixing the insertion plate (607) to the inner wall of the insertion slot (606) is installed at the bottom of the second threaded post (608).

2. The comb-plate type bridge expansion joint with limiting device according to claim 1, characterized in that: The bottom surface of the movable comb plate (2) is also equipped with a fixing frame (3), which is used to fix the movable comb plate (2) to the bridge with a nut. A fixing plate (4) is provided on one side of the movable comb plate (2), and a rotating column (5) is also installed on one side of the movable comb plate (2).

3. A comb-plate type bridge expansion joint with a limiting device according to claim 2, characterized in that: The dual fixing assembly (6) also includes a first threaded post (600), which is disposed on the inner wall of the fixing comb plate (1). A first nut (601) is installed on the top of the first threaded post (600). Multiple fixing threads (604) are provided on the outer surface of the connecting post (603). A second extension plate (610) is also installed on the bottom surface of the fixing comb plate (1).

4. A comb-plate type bridge expansion joint with a limiting device according to claim 2, characterized in that: The rotating columns (5) are two symmetrically fixedly installed on both sides of the movable comb plate (2). Each pair of adjacent rotating columns (5) are inserted into the inner wall of the fixed plate (4). The fixed plate (4) is set on the top of the fixed frame (3) and is fixedly connected to the fixed frame (3) by nuts.

5. A comb-plate type bridge expansion joint with a limiting device according to claim 3, characterized in that: The first threaded post (600) is a plurality of equidistantly arranged on the inner wall of the fixed comb plate (1) and all of them are fixedly connected to each other by the first nut (601). The first threaded post (600) is fixedly connected to the bridge. The first extension plate (602) is a plurality of equidistantly fixedly installed on the bottom surface of the fixed comb plate (1). Each first extension plate (602) has a second nut (605) on both sides. The inner wall of the plurality of first extension plates (602) is in contact with the outer surface of a connecting post (603).

6. A comb-plate type bridge expansion joint with a limiting device according to claim 5, characterized in that: The inner wall of each of the fixed threads (604) is sleeved with a fixed thread (604) on the outer surface of a connecting post (603). The insertion slot (606) is opened on one side of the fixed comb plate (1). The insertion plate (607) is installed on the other side of the fixed comb plate (1). The insertion plate (607) is inserted into the inner wall of the insertion slot (606). The bottom surface of the insertion plate (607) is fixedly connected to two second threaded posts (608). A third nut (609) is sleeved on the outer surface of each second threaded post (608).

7. A comb-plate type bridge expansion joint with a limiting device according to claim 5, characterized in that: The second extension plate (610) is installed on one end of the bottom surface of the fixed comb plate (1). A second nut (605) is provided on both sides of the second extension plate (610) and is sleeved with the fixing thread (604) opened on the outer surface of the connecting column (603) to enhance the connection stability between each two adjacent fixed comb plates (1).

Images