Municipal bridge expansion joint device with damping function

Abstract

The municipal bridge expansion joint device with the damping function comprises a beam body and a rubber plate, the rubber plate is installed on the outer side of the beam body, a fixed comb plate and a movable comb plate are fixedly installed on the top of the rubber plate, and an installation frame is installed on the top of the fixed comb plate and the top of the movable comb plate. Movable frames are fixedly mounted on the side faces of the mounting frames, the mounting frames and the movable frames are arranged side by side, damping assemblies are mounted in the movable frames, and the expansion joint device has the damping function through the movable frames and the damping assemblies in the movable frames. The top of the movable frame moves downwards through the impact force of the automobile, and the second hinge frame is driven to move synchronously. As the length of the connecting rod is fixed, the first hinge frame and the sliding plate move along with the connecting rod, and the sliding plate slides along the fixed frame sliding groove. And the elastic component further relieves the impact force, so that the overall damping effect is enhanced. The structure can prevent an automobile from directly impacting the comb plate, prevents the comb plate from deforming, loosening and even falling off, and remarkably prolongs the service life of the device.

Description

Technical Field

[0001] This utility model relates to the field of municipal bridge engineering technology, specifically a municipal bridge expansion joint device with shock absorption function. Background Technology

[0002] Municipal bridges and roads are the main construction direction of municipal engineering. Expansion joints are structural joints set at appropriate locations in the construction joint direction of municipal roads and bridges to prevent cracks or damage caused by thermal expansion and contraction due to climate temperature changes. Expansion joint devices are usually installed inside the expansion joints to connect them and prevent vehicles from bouncing during driving.

[0003] However, in traditional comb-type expansion joint devices, the gaps between the fixed and movable comb plates are directly exposed, allowing rainwater, sand, fallen leaves, and other debris to easily enter and accumulate, causing the comb plates to jam, corrode, or wear, severely affecting the normal operation and service life of the device. Furthermore, the lack of shock absorption means that when vehicles pass over them, the tires directly crush the comb plate gaps, transmitting the impact force to the bridge structure. This results in severe vibration of the comb plates, which, over time, can easily lead to deformation, loosening, or even detachment of the comb plates. It also exacerbates localized stress concentration in the bridge, shortening its overall lifespan. Finally, it results in high maintenance costs, as frequent cleaning and replacement of components due to gap blockage and vibration damage increases the difficulty and cost of maintenance.

[0004] Therefore, this utility model provides a municipal bridge expansion joint device with shock absorption function to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of this invention is to provide a municipal bridge expansion joint device with shock absorption function to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A municipal bridge expansion joint device with shock absorption function includes a beam and a rubber plate. The rubber plate is installed on the outside of the beam. A fixed comb plate and a movable comb plate are fixedly installed on the top of the rubber plate. An installation frame is installed on the top of the fixed comb plate and the movable comb plate. A movable frame is fixedly installed on the side of the installation frame. Multiple sets of the installation frame and the movable frame are arranged side by side. A shock absorption component is installed inside the movable frame.

[0008] As a further embodiment of this utility model, the shock absorption component includes a fixed frame, which is fixedly installed at the bottom of the movable frame. The fixed frame has a sliding groove inside, and a sliding plate is slidably connected inside the sliding groove. A first hinge frame is fixedly installed on the top of the sliding plate. A connecting rod is hinged inside the first hinge frame, and a second hinge frame is hinged on the top of the connecting rod. The second hinge frame is fixedly installed on the top of the movable frame.

[0009] As a further improvement of this utility model, the bottom of the movable frame is provided with an installation groove, and a telescopic belt is installed inside the installation groove.

[0010] As a further embodiment of this utility model, the movable frame is made of high-strength steel, and a cushioning pad made of neoprene rubber is bonded to the outer top of the movable frame.

[0011] As a further embodiment of this utility model, the fixed comb plate and the movable comb plate are provided with connecting grooves, a connecting plate is installed inside the connecting grooves, and the mounting bracket is fixedly installed on the top of the connecting plate.

[0012] As a further embodiment of this utility model, a positioning groove is provided on the top of the rubber plate, and a positioning plate adapted to the positioning groove is welded to the bottom of the fixed comb plate and the movable comb plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. In use, this utility model enables the expansion joint device to have a shock absorption function through the movable frame and its internal shock-absorbing components. When a car on the bridge passes over the device, it first contacts the movable frame, where the buffer pads bonded to the outside of the movable frame provide initial shock absorption. The impact force of the car causes the top of the movable frame to move downward, driving the second hinged frame to move synchronously. Since the length of the connecting rod is fixed, the first hinged frame and the sliding plate move accordingly, with the sliding plate sliding along the groove of the fixed frame. At this time, the elastic component further reduces the impact force, thereby enhancing the overall shock absorption effect. This structure can prevent cars from directly impacting the comb plate, preventing the comb plate from deforming, loosening, or even falling off, significantly improving the service life of the device.

[0015] 2. In use, the multiple sets of movable frames and sealing strips installed on the outer side of the fixed and movable comb plates provide dust prevention and protection, preventing sand, fallen leaves, and other debris from entering the gaps between the comb plates, thus avoiding jamming, corrosion, or wear. This design eliminates the need for frequent cleaning of clogged gaps, reducing maintenance difficulty and cost. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a municipal bridge expansion joint device with shock absorption function.

[0017] Figure 2 This is a schematic diagram of the disassembled structure of a movable frame for a municipal bridge expansion joint device with shock absorption function.

[0018] Figure 3 This is a structural diagram of a municipal bridge expansion joint device with shock absorption function, consisting of a rubber plate, a fixed comb plate, and a movable comb plate.

[0019] Figure 4 This is a schematic diagram of the movable frame in a municipal bridge expansion joint device with shock absorption function.

[0020] Figure 5 This is a cross-sectional schematic diagram of the movable frame in a municipal bridge expansion joint device with shock absorption function.

[0021] Figure 6 An expansion joint device for municipal bridges with shock absorption function Figure 5 Enlarged view of point A in the middle.

[0022] In the diagram: 1. Beam; 2. Rubber plate; 3. Fixed comb plate; 4. Movable comb plate; 5. Positioning groove; 6. Positioning plate; 7. Connecting groove; 8. Connecting plate; 9. Limiting hole; 10. Fixing hole; 11. Mounting frame; 12. Movable frame; 13. Support plate; 14. Shock absorption assembly; 15. Fixed frame; 16. Slide groove; 17. Elastic component; 18. Sliding plate; 19. Hinge frame one; 20. Connecting rod; 21. Hinge frame two; 22. Mounting groove; 23. Telescopic belt; 24. Sealing belt. Detailed Implementation

[0023] 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.

[0024] Please see Figures 1-6 In this embodiment of the present invention, a municipal bridge expansion joint device with shock absorption function includes a beam body 1 and a rubber plate 2. The rubber plate 2 is installed on the outside of the beam body 1. A fixed comb plate 3 and a movable comb plate 4 are fixedly installed on the top of the rubber plate 2. The sides of the fixed comb plate 3 and the movable comb plate 4 are provided with matching tooth grooves. An installation frame 11 is installed on the top of the fixed comb plate 3 and the movable comb plate 4. A movable frame 12 is fixedly installed on the side of the installation frame 11. Multiple sets of installation frames 11 and movable frames 12 are arranged side by side. A shock absorption component 14 is installed inside the movable frame 12.

[0025] Specifically, by fixing the comb plate 3 and moving the comb plate 4, the beam 1 can be provided with expansion and contraction space when it is thermally expanded or contracted, while avoiding the vehicle from jumping when driving due to excessive expansion joint; the movable frame 12 and the shock-absorbing components 14 installed inside it enable the expansion joint device to have shock absorption function.

[0026] Please see Figure 4 and Figure 5 The shock absorption assembly 14 includes a fixed frame 15, which is fixedly installed at the bottom of the movable frame 12. The fixed frame 15 has a sliding groove 16 inside, and a sliding plate 18 is slidably connected inside the sliding groove 16. An elastic component 17 is fixedly installed inside the sliding groove 16, and the sliding plate 18 is fixedly connected to the other side of the elastic component 17. A hinge frame 19 is fixedly installed on the top of the sliding plate 18. A connecting rod 20 is hinged inside the hinge frame 19, and a hinge frame 21 is hinged on the top of the connecting rod 20. The hinge frame 21 is fixedly installed on the top of the movable frame 12.

[0027] Specifically, when the impact force of the car causes the top of the movable frame 12 to move downward, it will drive the second hinge frame 21 to move synchronously. Since the length of the connecting rod 20 is fixed, the first hinge frame 19 and the sliding plate 18 move accordingly, and the sliding plate 18 slides along the slide groove 16 of the fixed frame 15. At this time, the elastic component 17 in the slide groove 16 further reduces the impact force, thereby enhancing the overall shock absorption effect.

[0028] Please see Figure 5 and Figure 6 The bottom of the movable frame 12 is provided with an installation groove 22, and a telescopic belt 23 is installed inside the installation groove 22. Support plates 13 are fixedly installed on the side of the mounting frame 11 and the bottom of the movable frame 12.

[0029] Specifically, the telescopic belt 23 is fixed to the bottom of the movable frame 12 via the mounting groove 22. When the distance between the fixed comb plate 3 and the movable comb plate 4 changes with the expansion or contraction of the expansion joint, the telescopic belt 23 can expand and contract synchronously. In addition, the support plate 13 ensures a more stable connection between the mounting frame 11 and the movable frame 12.

[0030] Please see Figure 1 and Figure 4 The movable frame 12 is made of high-strength steel. A cushioning pad made of neoprene rubber is bonded to the outer top of the movable frame 12. A sealing strip 24 made of polyurethane is installed between the two sets of movable frames 12.

[0031] Specifically, the cushioning pads made of neoprene rubber not only provide initial shock absorption but also prevent direct contact between the car and the movable frame 12, protecting the movable frame 12. In addition, the sealing strip 24 can connect multiple movable frames 12 to each other, enabling them to play a dustproof and protective role, preventing sand, fallen leaves and other debris from entering the gaps between the teeth of the comb plate.

[0032] Please see Figure 3 and Figure 4 The fixed comb plate 3 and the movable comb plate 4 have a connecting groove 7 inside, and a connecting plate 8 is installed inside the connecting groove 7. A mounting bracket 11 is fixedly installed on the top of the connecting plate 8. Several limiting holes 9 are opened on the sides of the fixed comb plate 3 and the movable comb plate 4. The connecting plate 8 has a fixing hole 10 that matches the limiting hole 9 inside.

[0033] Specifically, by moving the connecting plate 8 within the connecting groove 7, the height of the mounting frame 11 can be adjusted; then, by fixing the fixing bolts to the fixing hole 9 and the corresponding limiting hole 10, the connecting plate 8 can be fixed, thereby adjusting the height of the movable frame 12 so that the device can be adapted to bridges of different depths.

[0034] Please see Figure 3 The top of the rubber plate 2 is provided with a positioning groove 5, and the bottom of the fixed comb plate 3 and the movable comb plate 4 are welded with positioning plates 6 that are compatible with the positioning groove 5.

[0035] Specifically, the positioning plate 6 of the fixed comb plate 3 and the movable comb plate 4 is inserted into the positioning groove 5 of the rubber plate 2, so that the fixed comb plate 3, the movable comb plate 4 and the positioning plate 6 are aligned with the threaded holes of the rubber plate 2. This structure can play a positioning role, thereby facilitating the workers to drive in the ground piles.

[0036] The working principle of this utility model is as follows: When installing the expansion joint device, first place the rubber plate 2 inside the expansion joint of the beam 1, then insert the positioning plate 6 of the fixed comb plate 3 and the movable comb plate 4 into the positioning groove 5 of the rubber plate 2, so that the fixed comb plate 3, the movable comb plate 4 and the positioning plate 6 are aligned with the threaded holes of the rubber plate 2. Then drive in the ground piles and insert the connecting plate 8 of the mounting frame 11 into the connecting groove 7. The height of the mounting frame 11 can be adjusted by moving the connecting plate 8. Finally, fix the fixing bolts to the fixing hole 9 and the limiting hole 10 to fix the connecting plate 8 and complete the installation of the movable frame 12. Finally, install multiple sets of movable frames 12 on the top of the fixed comb plate 3 and the movable comb plate 4 in sequence, and install the sealing strip 24 between adjacent movable frames 12 to complete the installation of the expansion joint device. When a car hits the device, it first contacts the neoprene rubber buffer pad, providing initial shock absorption and preventing the car from directly contacting the movable frame 12, thus protecting the movable frame 12. When the top of the movable frame 12 moves down, it drives the hinge frame 21 to move synchronously. Since the connecting rod 20 has a fixed length, the hinge frame 19 and the sliding plate 18 move accordingly, with the sliding plate 18 sliding along the groove 16 of the fixed frame 15. At this time, the elastic component 17 in the groove 16 further reduces the impact force, enhancing the overall shock absorption effect. This structure can prevent cars from directly impacting the comb plate, preventing the comb plate from deforming, loosening, or falling off, and significantly extending the service life of the device. At the same time, the sealing strip 24 plays a dustproof and protective role, preventing sand, fallen leaves, and other debris from entering the gaps between the comb plates, avoiding jamming, corrosion, or wear. This design eliminates the need for frequent cleaning of the gaps between the teeth, reducing maintenance difficulty and cost.

[0037] 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 municipal bridge expansion joint device with shock absorption function, comprising a beam body (1) and a rubber plate (2), characterized in that, The rubber plate (2) is installed on the outside of the beam (1). A fixed comb plate (3) and a movable comb plate (4) are fixedly installed on the top of the rubber plate (2). A mounting frame (11) is installed on the top of the fixed comb plate (3) and the movable comb plate (4). A movable frame (12) is fixedly installed on the side of the mounting frame (11). Multiple sets of the mounting frame (11) and the movable frame (12) are arranged side by side. A shock-absorbing component (14) is installed inside the movable frame (12).

2. The expansion joint device for municipal bridges with shock-absorbing function according to claim 1, characterized in that, The shock absorption assembly (14) includes a fixed frame (15), which is fixedly installed at the bottom of the movable frame (12). The fixed frame (15) has a sliding groove (16) inside, and a sliding plate (18) is slidably connected inside the sliding groove (16). A hinge frame one (19) is fixedly installed on the top of the sliding plate (18). A connecting rod (20) is hinged inside the hinge frame one (19), and a hinge frame two (21) is hinged on the top of the connecting rod (20). The hinge frame two (21) is fixedly installed on the top of the movable frame (12).

3. The expansion joint device for municipal bridges with shock-absorbing function according to claim 2, characterized in that, The bottom of the movable frame (12) is provided with a mounting groove (22), and a telescopic belt (23) is installed inside the mounting groove (22).

4. The expansion joint device for municipal bridges with shock-absorbing function according to claim 2, characterized in that, The movable frame (12) is made of high-strength steel, and a cushioning pad made of neoprene rubber is bonded to the outer top of the movable frame (12).

5. The expansion joint device for municipal bridges with shock absorbing function according to claim 1, characterized in that, The fixed comb plate (3) and the movable comb plate (4) are provided with connecting grooves (7), and connecting plates (8) are installed inside the connecting grooves (7). The mounting bracket (11) is fixedly installed on the top of the connecting plates (8).

6. The expansion joint device for municipal bridges with shock absorbing function according to claim 1, characterized in that, The top of the rubber plate (2) is provided with a positioning groove (5), and the bottom of the fixed comb plate (3) and the movable comb plate (4) are welded with positioning plates (6) that are compatible with the positioning groove (5).

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