Bridge expansion joint

Abstract

The utility model relates to the technical field of bridge expansion joints, and discloses a bridge expansion joint which comprises a first expansion plate and a second expansion plate distributed opposite to the first expansion plate. The comb tooth sets are arranged on the sides, close to each other, of the first telescopic plate and the second telescopic plate correspondingly, and the two oppositely-distributed comb tooth sets are meshed in a sliding mode. The elastic telescopic assembly comprises a rubber block arranged between the first telescopic plate and the second telescopic plate, a supporting body is embedded in the rubber block, the supporting body is of a rigid structure, and the rubber block is used for elastically abutting against the first telescopic plate and the second telescopic plate; and two ends of the rubber belt are fixedly connected between the bottom ends of the first telescopic plate and the second telescopic plate respectively. The effect of improving energy absorption and buffering of the expansion joint can be achieved, and the use cost is effectively controlled.

Description

Technical Field

[0001] This utility model relates to the field of bridge expansion joint technology, and in particular to a bridge expansion joint. Background Technology

[0002] Because bridges are long, they require multiple bridge decks to be joined together. The joints between these decks are susceptible to deformation due to thermal expansion and contraction, vibration, and other factors. Therefore, bridge expansion joints need to be installed at these joints.

[0003] For example, in a bridge expansion joint with authorization announcement number CN220813426U, several comb teeth are designed to be elastically connected to the channel plate, and springs and telescopic rods allow the comb teeth to slide independently. However, since the expansion joint is installed on the top surface of the bridge, its comb tooth structure is exposed and susceptible to erosion from rain and snow. This causes the springs, telescopic rods, and other structures to easily rust, age, and lose elasticity, failing to effectively absorb and buffer energy from deformation at the joint. Furthermore, the requirement for springs and telescopic rods for each comb tooth significantly increases the operating cost of the expansion joint. Therefore, the existing technology has certain shortcomings. Utility Model Content

[0004] The purpose of this invention is to provide a bridge expansion joint to solve the problems existing in the prior art, thereby improving the energy absorption and buffering effect of the expansion joint and effectively controlling the cost of use.

[0005] To achieve the above objectives, this utility model provides the following solution: This utility model provides a bridge expansion joint, comprising:

[0006] A first telescopic plate, and a second telescopic plate distributed opposite to the first telescopic plate;

[0007] The comb teeth are respectively arranged on the adjacent sides of the first telescopic plate and the second telescopic plate, and the two sets of comb teeth distributed opposite to each other slide and mesh.

[0008] An elastic telescopic assembly includes a rubber block disposed between a first telescopic plate and a second telescopic plate. A support body is embedded in the rubber block. The support body is a rigid structure. The rubber block is used to elastically resist the first telescopic plate and the second telescopic plate.

[0009] The rubber belt has two ends fixedly connected between the bottom ends of the first telescopic plate and the second telescopic plate, respectively.

[0010] Preferred options also include:

[0011] The support base is fixedly connected to the side of the first telescopic plate near the second telescopic plate;

[0012] A connecting plate is fixedly attached to the second telescopic plate and distributed opposite to the support base. A limiting groove is formed on the side wall of the support base, and the rubber block is fixedly attached to the limiting groove. The connecting plate slides in contact with the limiting groove.

[0013] Preferably, the limiting groove has shoulders on opposite sides of its opening, and the connecting plate has bevels at both ends facing the limiting groove.

[0014] Preferably, the comb teeth assembly includes:

[0015] A plurality of first comb teeth are provided, and a first slot is provided on the side of the first telescopic plate near the second telescopic plate. The plurality of first comb teeth are fixed to the top of the first slot at equal intervals from left to right.

[0016] A plurality of second comb teeth are provided, and a second slot is provided on the side of the second telescopic plate near the first telescopic plate. The plurality of second comb teeth are fixedly connected to the top of the second slot at equal intervals from left to right.

[0017] In this configuration, several of the first comb teeth and the second comb teeth slide and engage with each other.

[0018] Preferably, a first pad is fixed to the bottom of the first slot, and a plurality of first comb teeth are fixed to the top surface of the first pad; a second pad is fixed to the bottom of the second slot, and a plurality of second comb teeth are fixed to the top surface of the second pad; the rubber block is disposed between the first pad and the second pad.

[0019] Preferably, a reinforcing plate is fixedly connected between any two adjacent first comb teeth and second comb teeth.

[0020] Preferably, the support body includes a plurality of steel plates, which are embedded in the rubber block at equal intervals along the horizontal direction.

[0021] Preferably, a connecting groove is provided at the bottom of the first telescopic plate and the second telescopic plate on the side away from each other, and a plurality of support plates are fixedly connected to the inner wall of the top of the connecting groove from left to right, and anchor bars are fixedly connected to the bottom of the support plates.

[0022] The present invention discloses the following technical effects:

[0023] This technical solution uses a first and second telescopic plate arranged opposite each other, with comb-tooth groups respectively set on the adjacent sides of the first and second telescopic plates. The two sets of comb-tooth groups slide and interlock, providing not only telescopic deformation for the first and second telescopic plates, but also limiting their sliding movement to maintain structural stability and improve their compressive strength. Rubber blocks provide elastic support for the first and second telescopic plates, with rigid support bodies embedded within the rubber blocks, maintaining good support strength during elastic deformation. This effectively absorbs vibration and load at the bridge joint. Compared to existing technologies that use springs and telescopic rods for each comb tooth, this solution significantly reduces equipment operating costs. Furthermore, a rubber strip is fixed between the first and second telescopic plates to seal the bridge joint. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a diagram showing the positional relationship between the first telescopic plate and the second telescopic plate in this utility model;

[0026] Figure 2 This is a diagram showing the positional relationship between the first pad and the second pad in this utility model;

[0027] Figure 3 In this utility model Figure 2 A magnified view of a section at point A in the middle;

[0028] Figure 4 This is a diagram showing the positional relationship between the first comb tooth and the second comb tooth in this utility model.

[0029] Figure 5 This is a diagram showing the connection relationship between the support base and the connecting plate in this utility model;

[0030] Among them, 1. First telescopic plate; 2. Second telescopic plate; 3. Rubber block; 4. Rubber belt; 5. Support seat; 6. Connecting plate; 7. Shoulder; 8. Bevel; 9. First comb tooth; 10. Second comb tooth; 11. First pad; 12. Second pad; 13. Reinforcing plate; 14. Steel plate; 15. Support plate; 16. Anchor bar. Detailed Implementation

[0031] 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.

[0032] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] Reference Figures 1-5 This utility model provides a bridge expansion joint, comprising:

[0034] First telescopic plate 1, and second telescopic plate 2 distributed opposite to the first telescopic plate 1;

[0035] The comb teeth are respectively located on the adjacent sides of the first telescopic plate 1 and the second telescopic plate 2, and the two sets of comb teeth distributed opposite to each other slide and mesh.

[0036] The elastic telescopic component includes a rubber block 3 disposed between a first telescopic plate 1 and a second telescopic plate 2. A support body is embedded in the rubber block 3. The support body is a rigid structure. The rubber block 3 is used to elastically resist the first telescopic plate 1 and the second telescopic plate 2.

[0037] The two ends of the rubber belt 4 are respectively fixed between the bottom ends of the first telescopic plate 1 and the second telescopic plate 2.

[0038] This technical solution uses a first telescopic plate 1 and a second telescopic plate 2 arranged opposite each other. Comb teeth are respectively arranged on the adjacent sides of the first and second telescopic plates 1 and 2. The sliding engagement of the two sets of comb teeth not only provides telescopic deformation for the first and second telescopic plates 1 and 2, but also limits their sliding movement, maintaining the structural stability of the first and second telescopic plates 1 and 2 and improving their compressive strength. Rubber blocks 3 provide elastic support for the first and second telescopic plates 1 and 2, and the rubber blocks 3 have embedded rigid support bodies, maintaining good support strength while undergoing elastic deformation. This effectively absorbs vibration and load at the bridge joint. Compared to the existing technology that uses springs and telescopic rods for each comb tooth, this solution effectively reduces equipment operating costs. Furthermore, a rubber strip 4 is fixed between the first and second telescopic plates 1 and 2 to seal the bridge joint.

[0039] Specifically, the first telescopic plate 1 and the second telescopic plate 2 are fixedly connected to both sides of the bridge contact point, respectively, to realize the telescopic deformation connection between multiple bridge decks.

[0040] Furthermore, it also includes:

[0041] The support base 5 is fixedly connected to the side of the first telescopic plate 1 near the second telescopic plate 2;

[0042] The connecting plate 6 is fixedly connected to the second telescopic plate 2 and distributed opposite to the support base 5. The side wall of the support base 5 has a limit groove, the rubber block 3 is fixedly connected in the limit groove, and the connecting plate 6 slides with the limit groove.

[0043] By opening a limiting groove on the support base 5, the connecting plate 6 is slidably connected in the limiting groove, and the rubber block 3 is fixed in the limiting groove. When the first telescopic plate 1 and the second telescopic plate 2 are displaced and deformed, the connecting plate 6 slides and squeezes the rubber block 3 to absorb the vibration and load generated by the displacement deformation.

[0044] Compared to directly exposing the rubber block 3 to the air, the connecting plate 6 extends into the limiting groove and cooperates with the support base 5 to cover and protect the rubber block 3, so as to maintain the good elasticity of the rubber block 3 structure itself for a long time.

[0045] Furthermore, shoulders 7 are provided on opposite sides of the groove opening of the limiting groove, and inclined sides 8 are provided at both ends of the connecting plate 6 facing the limiting groove.

[0046] Specifically, the inclined surfaces of the shoulder 7 and the inclined side 8 are parallel to each other, forming a guiding effect for the connecting plate 6 to extend into the limiting groove. Furthermore, a gap is provided between the connecting plate 6 and the inner side wall of the limiting groove to facilitate the connecting plate 6 to extend into the limiting groove and abut against the rubber block 3.

[0047] Furthermore, the comb teeth assembly includes:

[0048] A number of first comb teeth 9 are provided, and a first slot is provided on the side of the first telescopic plate 1 near the second telescopic plate 2. The number of first comb teeth 9 are fixed to the top of the first slot at equal intervals from left to right.

[0049] A number of second comb teeth 10 are provided, and a second slot is provided on the side of the second telescopic plate 2 near the first telescopic plate 1. A number of second comb teeth 10 are fixed to the top of the second slot at equal intervals from left to right.

[0050] Among them, several first comb teeth 9 and second comb teeth 10 slide and mesh with each other.

[0051] Correspondingly, a first slot is opened on the first telescopic plate 1, and a number of first comb teeth 9 are fixed in the first slot. A second slot is opened on the second telescopic plate 2, and a number of second comb teeth 10 are fixed in the second slot. The first comb teeth 9 and the second comb teeth 10 are fixed to the first telescopic plate 1 and the second telescopic plate 2 respectively. After the first comb teeth 9 and the second comb teeth 10 are engaged, the compressive strength between the first telescopic plate 1 and the second telescopic plate 2 is improved.

[0052] Furthermore, a first pad 11 is fixedly connected to the bottom of the first slot, and a number of first comb teeth 9 are fixedly connected to the top surface of the first pad 11. A second pad 12 is fixedly connected to the bottom of the second slot, and a number of second comb teeth 10 are fixedly connected to the top surface of the second pad 12. A rubber block 3 is disposed between the first pad 11 and the second pad 12.

[0053] Furthermore, by fixing the first pad 11 in the first slot, the first pad 11 is used to stabilize a number of first comb teeth 9, while fixing the second pad 12 in the second slot, the second pad 12 is used to stabilize a number of second comb teeth 10, thereby improving the stability of the interlocking of the first comb teeth 9 and the second comb teeth 10. When the two interlock, the second comb teeth 10 slide on the top surface of the first pad 11, and the first comb teeth 9 slide on the top surface of the second pad 12, thereby stabilizing the comb tooth assembly structure and preventing the first comb teeth 9 and the second comb teeth 10 from bending and deforming under external pressure.

[0054] In this technical solution, the rubber block 3 is disposed between the first pad 11 and the second pad 12. The support base 5 is fixedly connected to the first pad 11, and the connecting plate 6 is fixedly connected to the second pad 12. Several second comb teeth 10 are slidably connected to the top surface of the support base 5. When the connecting plate 6 extends into the limiting groove and abuts against the rubber block 3, several first comb teeth 9 are slidably connected to the top surface of the second pad 12.

[0055] Furthermore, a reinforcing plate 13 is fixedly connected between any two adjacent first comb teeth 9 and second comb teeth 10.

[0056] Similarly, the reinforcing plate 13 can further improve the connection strength between the first comb tooth 9 and the second comb tooth 10.

[0057] Furthermore, the support body includes several steel plates 14, which are embedded in the rubber block 3 at equal intervals along the horizontal direction.

[0058] By embedding and fixing the steel plate 14 into the rubber block 3, the rigid support strength of the rubber block 3 is improved, and the structural stability is enhanced. The vibration and load of the first telescopic plate 1 and the second telescopic plate 2 are transmitted through the connecting plate 6 and the support seat 5, and absorbed by the rigid rubber block 3, thereby improving the energy absorption and buffering effect of the overall structure.

[0059] Furthermore, a connecting groove is provided at the bottom of the first telescopic plate 1 and the second telescopic plate 2 on the side away from each other. Several support plates 15 are fixedly connected to the inner wall of the top of the connecting groove from left to right. An anchor bar 16 is fixedly connected to the bottom end of the support plate 15.

[0060] The first expansion joint 1 and the second expansion joint 2 are fixed to the bridge beam structure by the support plate 15 and the anchor bar 16, thereby improving the overall integrity of the expansion joint structure and the bridge connection.

[0061] This utility model discloses the installation principle of bridge expansion joints:

[0062] Anchor bars 16 are anchored to the bridge beam structure, and concrete is poured between support plates 15 so that the top surface of the bridge is flush with the top surfaces of the first telescopic plate 1 and the second telescopic plate 2. The first telescopic plate 1 and the second telescopic plate 2 are fixed to both sides of the bridge joint. A number of first comb teeth 9 on the first telescopic plate 1 and a number of second comb teeth 10 on the second telescopic plate 2 are interlocked. The connecting plate 6 is inserted into the limiting groove and abuts against the rubber block 3, so that the first comb teeth 9 slide against the top surface of the second pad 12, and the second comb teeth 10 slide against the top surface of the support seat 5. The bridge joint is sealed by rubber strip 4.

[0063] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0064] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A bridge expansion joint, characterized in that, include: A first telescopic plate (1), and a second telescopic plate (2) distributed opposite to the first telescopic plate (1); The comb teeth are respectively arranged on the mutually close sides of the first telescopic plate (1) and the second telescopic plate (2), and the two sets of comb teeth distributed opposite to each other slide and mesh. The elastic telescopic component includes a rubber block (3) disposed between the first telescopic plate (1) and the second telescopic plate (2). The rubber block (3) is embedded with a support body, which is a rigid structure. The rubber block (3) is used to elastically abut against the first telescopic plate (1) and the second telescopic plate (2). The rubber belt (4) is fixed between the bottom ends of the first telescopic plate (1) and the second telescopic plate (2).

2. The bridge expansion joint according to claim 1, characterized in that, Also includes: The support base (5) is fixed to the side of the first telescopic plate (1) near the second telescopic plate (2); The connecting plate (6) is fixedly connected to the second telescopic plate (2) and distributed opposite to the support base (5). The side wall of the support base (5) has a limiting groove. The rubber block (3) is fixedly connected in the limiting groove. The connecting plate (6) slides in the limiting groove.

3. The bridge expansion joint according to claim 2, characterized in that: Shoulders (7) are provided on opposite sides of the groove opening of the limiting groove, and inclined edges (8) are provided at both ends of the connecting plate (6) facing the limiting groove.

4. The bridge expansion joint according to claim 1, characterized in that, The comb teeth assembly includes: A plurality of first comb teeth (9) are provided. A first slot is provided on the side of the first telescopic plate (1) near the second telescopic plate (2). A plurality of first comb teeth (9) are fixed to the top of the first slot at equal intervals from left to right. A number of second comb teeth (10) are provided. The second telescopic plate (2) is provided with a second slot on the side near the first telescopic plate (1). The number of second comb teeth (10) are fixed to the top of the second slot at equal intervals from left to right. In this process, a number of the first comb teeth (9) and the second comb teeth (10) slide and engage with each other.

5. The bridge expansion joint according to claim 4, characterized in that: A first pad (11) is fixedly connected to the bottom of the first slot, and a plurality of first comb teeth (9) are fixedly connected to the top surface of the first pad (11). A second pad (12) is fixedly connected to the bottom of the second slot, and a plurality of second comb teeth (10) are fixedly connected to the top surface of the second pad (12). The rubber block (3) is disposed between the first pad (11) and the second pad (12).

6. The bridge expansion joint according to claim 4, characterized in that: A reinforcing plate (13) is fixedly connected between any two adjacent first comb teeth (9) and second comb teeth (10).

7. The bridge expansion joint according to claim 1, characterized in that: The support body includes several steel plates (14), which are embedded in the rubber block (3) at equal intervals along the horizontal direction.

8. The bridge expansion joint according to claim 1, characterized in that: The bottom of the first telescopic plate (1) and the second telescopic plate (2) on the side away from each other is provided with a connecting groove. A number of support plates (15) are fixedly connected to the inner wall of the top of the connecting groove from left to right. An anchor bar (16) is fixedly connected to the bottom end of the support plate (15).

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