Bridge expansion joint

Abstract

The utility model discloses a bridge expansion joint, which relates to the technical field of bridge connection and comprises a first comb plate, one side of the first comb plate is meshed and abutted with a second comb plate, the first comb plate and the second comb plate are connected with each other through round head rivets, and connecting structures are arranged below the first comb plate and the second comb plate. An adjusting structure is arranged on the connecting structure, and a cleaning structure is clamped between the bottom surfaces of the first comb plate and the second comb plate and the connecting structure; through cooperation of the connecting structure and the adjusting structure, the whole structure can conveniently adapt to bridge deformation caused by environment changes, practicability is improved, and the telescopic capacity of bridge gaps is achieved; water flow can be upwards sprayed out from the lower portion of the device gap through the cleaning structure, so that sundries accumulated in the device gap are flushed, the service life of the device is prolonged, and the capacity of efficiently cleaning and maintaining the bridge floor is achieved; finally, the problem that excessive abrasion is caused by too many accumulated sundries in the deformation process of an existing expansion joint is solved.

Description

Technical Field

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

[0002] Bridge expansion joints are an important component of bridge structures, primarily used to accommodate longitudinal or lateral displacements caused by factors such as temperature changes, concrete shrinkage and creep, load application, or earthquakes, ensuring bridge safety and driving comfort. Existing bridge expansion joint structures are diverse, and most of these structures accumulate a large amount of debris in the gaps at the joints during deformation. This leads to wear at the structural joints, eventually increasing the gap size and causing corrosion of components beneath the structure, significantly reducing its service life. Therefore, this utility model addresses these problems by improving existing structures. Utility Model Content

[0003] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a bridge expansion joint.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a bridge expansion joint, including a first comb plate, a second comb plate engaging with one side of the first comb plate, both the first and second comb plates having streamlined meshing teeth and being connected to each other by round-headed rivets, a connecting structure being provided below the first and second comb plates, an adjustment structure being provided on the connecting structure, and a cleaning structure being sandwiched between the bottom surfaces of the first and second comb plates and the connecting structure.

[0005] Preferably, the cleaning structure includes a flow channel plate, one side of the top surface of the flow channel plate is fixed to the bottom surface of the second comb plate by a round-head rivet, and the other side of the flow channel plate extends beyond the meshing gap of the first comb plate and the second comb plate and abuts against the bottom surface of the first comb plate. The first comb plate, the second comb plate and the flow channel plate form a horizontal whole.

[0006] Preferably, the flow channel plate has multiple threaded connectors fixed at equal intervals on the side below the second comb plate, and the flow channel plate has water channels at the positions of the multiple threaded connectors. The water channels turn vertically upward below the meshing gap of the first and second comb plates and penetrate the top surface of the flow channel plate.

[0007] Preferably, the connecting structure includes a bent plate, the top surface of which is symmetrically fixed to the bottom surface of the first comb plate and the second comb plate, and a waterproof plate is installed and connected between the bent plates. The waterproof plate has a W-shaped folded structure and is made of a hydrophobic flexible material.

[0008] Preferably, multiple reinforcing plates are vertically fixed at equal intervals on the inner side of the bent plate, and the reinforcing plates and the bent plate form a triangular stable structure. Multiple connecting anchor bars are fixed at equal intervals on the top inner side of the bent plate, and the connecting anchor bars are embedded in the bridge concrete.

[0009] Preferably, the adjustment structure includes support rod sleeves, which are horizontally and equidistantly mounted on the bending plate. Support rods are slidably connected between the support rod sleeves, and the support rods are restricted from detaching by limiting pieces.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model, through the cooperation of the connecting structure and the adjusting structure, facilitates the overall structure to adapt to bridge deformation caused by environmental changes, improves practicality, and realizes the expansion and contraction capacity of the bridge gaps; furthermore, through the cleaning structure, water can be sprayed upward from the bottom of the device gaps, thereby washing away the debris accumulated in the device gaps, improving the service life of the device, and realizing the ability to efficiently clean and maintain the bridge deck; finally, it solves the problem of excessive wear caused by excessive accumulation of debris during the deformation process of existing expansion joints. Attached Figure Description

[0011] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0012] Figure 1 This is a three-dimensional schematic diagram of the overall appearance of the structure proposed in this utility model;

[0013] Figure 2 This is a three-dimensional schematic diagram of the cleaning structure proposed in this utility model;

[0014] Figure 3 This is a three-dimensional schematic diagram of the connection structure proposed in this utility model;

[0015] Figure 4 This is a three-dimensional schematic diagram of the adjustment structure proposed in this utility model;

[0016] Figure 5 The present utility model proposes Figure 2 A three-dimensional schematic diagram of the structure at point A in the middle.

[0017] The numbers in the diagram are: 1. First comb plate; 2. Second comb plate; 3. Round head rivet; 4. Flow channel plate; 5. Bending plate; 6. Waterproof plate; 7. Reinforcing plate; 8. Connecting anchor bar; 9. Support rod sleeve; 10. Support rod; 11. Threaded connector; 12. Water flow channel. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Example: See Figure 1-5 This utility model discloses a bridge expansion joint, comprising a first comb plate 1, with a second comb plate 2 meshing and abutting on one side of the first comb plate 1. Both the first comb plate 1 and the second comb plate 2 have streamlined meshing teeth and are connected to each other by round-headed rivets 3. A connecting structure is provided below both the first comb plate 1 and the second comb plate 2, and an adjustment structure is provided on the connecting structure. A cleaning structure is sandwiched between the bottom surfaces of the first comb plate 1 and the second comb plate 2 and the connecting structure. The connecting structure includes a bent plate 5, the top surface of which is symmetrically fixed to the bottom surfaces of the first comb plate 1 and the second comb plate 2. A waterproof plate 6 is installed and connected between the bent plates 5. The waterproof plate 6 has a W-shaped folded structure and is made of a hydrophobic flexible material. Multiple reinforcing plates 7 are vertically fixed at equal intervals on the inner side of the bent plate 5, forming a triangular stable structure with the bent plate 5. Multiple connecting anchor bars 8 are fixed at equal intervals on the top inner side of the bent plate 5, and the connecting anchor bars 8 are embedded in the bridge concrete. The adjustment structure includes support rod sleeves 9, which are horizontally and equidistantly installed on the bending plate 5. Support rods 10 are slidably connected between the support rod sleeves 9. The support rods 10 are restricted from coming out by limiting plates. Through the cooperation of the connection structure and the adjustment structure, the overall structure can adapt to the deformation of the bridge caused by environmental changes, thus improving its practicality.

[0020] In this invention, to address the problem of excessive wear caused by excessive accumulation of debris in expansion joints during deformation, the following technical solution is adopted: One side of the top surface of the flow channel plate 4 is connected and fixed to the bottom surface of the second comb plate 2 via round-headed rivets 3. The other side of the flow channel plate 4 extends beyond the meshing gap between the first comb plate 1 and the second comb plate 2 and abuts against the bottom surface of the first comb plate 1. The first comb plate 1, the second comb plate 2, and the flow channel plate 4 form a horizontal unit. Multiple threaded connectors 11 are equidistantly fixed to the side of the flow channel plate 4 below the second comb plate 2. Water channels 12 are provided at positions corresponding to the multiple threaded connectors 11 on the flow channel plate 4. The water channels 12 turn vertically upward below the meshing gap between the first comb plate 1 and the second comb plate 2, penetrating the top surface of the flow channel plate 4. A cleaning structure allows water to spray upward from below the gap in the device, thereby flushing away accumulated debris and improving the device's service life.

[0021] Working principle: When using this utility model, firstly, during bridge construction, the structure is placed at the bridge connection point. Then, according to the construction process, concrete is poured so that the connecting anchor bars 8 under the first comb plate 1 and the second comb plate 2 are respectively embedded on the bridge sides at both ends. Then, the bridges at both ends of the structure are connected by the support rod sleeve 9 and the support rod 10. In the event of environmental changes, the bridges may shift. The support rod 10 can slide within the support rod sleeve 9 at both ends, adapting to deformation while supporting the connection point. The W-shaped design of the waterproof plate 6 facilitates the adaptation to the changing spacing between the bending plates 5 and guides rainwater to drain from both sides of the bridge instead of eroding the support rod 10 below. A reserved space is provided on the bottom surface of the bridge on one side of the second comb plate 2 for connecting the water supply system and the flow channel plate 4. By controlling the water supply system to supply water to the water flow channel 12 through the threaded connector 11 at appropriate times, the water finally sprays out from the outlet on the top surface of the flow channel plate 4, flushing the debris accumulated in the structural gaps onto the road surface, avoiding wear on the structure and improving the service life of the structure.

[0022] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A bridge expansion joint, comprising a first comb plate (1), characterized in that: The first comb plate (1) is engaged with the second comb plate (2) on one side. Both the first comb plate (1) and the second comb plate (2) are provided with streamlined meshing teeth and are connected to each other by round-head rivets (3). Both the first comb plate (1) and the second comb plate (2) are provided with connecting structures below them. The connecting structures are provided with adjusting structures. A cleaning structure is sandwiched between the bottom surface of the first comb plate (1) and the second comb plate (2) and the connecting structure.

2. A bridge expansion joint according to claim 1, characterized in that: The cleaning structure includes a flow channel plate (4). One side of the top surface of the flow channel plate (4) is connected and fixed to the bottom surface of the second comb plate (2) by a round-headed rivet (3). The other side of the flow channel plate (4) extends beyond the meshing gap between the first comb plate (1) and the second comb plate (2) and abuts against the bottom surface of the first comb plate (1). The first comb plate (1), the second comb plate (2) and the flow channel plate (4) form a horizontal whole.

3. A bridge expansion joint according to claim 2, characterized in that: The flow channel plate (4) is fixed with multiple threaded connectors (11) at equal intervals on the side below the second comb plate (2). The flow channel plate (4) is provided with water channels (12) at the positions of the multiple threaded connectors (11). The water channels (12) turn vertically upward and penetrate the top surface of the flow channel plate (4) below the meshing gap between the first comb plate (1) and the second comb plate (2).

4. A bridge expansion joint according to claim 1, characterized in that: The connecting structure includes a bent plate (5), the top surface of which is symmetrically fixed to the bottom surface of the first comb plate (1) and the second comb plate (2). A waterproof plate (6) is installed between the bent plates (5). The waterproof plate (6) is a W-shaped folded structure and is made of hydrophobic flexible material.

5. A bridge expansion joint according to claim 4, characterized in that: Multiple reinforcing plates (7) are vertically fixed at equal intervals on the inner side of the bent plate (5). The reinforcing plates (7) and the bent plate 5 form a triangular stable structure. Multiple connecting anchor bars (8) are fixed at equal intervals on the top inner side of the bent plate (5). The connecting anchor bars (8) are embedded in the concrete of the bridge body.

6. A bridge expansion joint according to claim 1, characterized in that: The adjustment structure includes a support rod sleeve (9), which is horizontally and equidistantly installed on the bending plate (5). Support rods (10) are slidably connected between the support rod sleeves (9), and the support rods (10) are restricted from coming out by a limiting piece.

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