Bridge expansion joint protection device

Abstract

This utility model relates to the field of bridge expansion joint protection technology, and more particularly to a protective device for bridge expansion joints. It includes two steel plates and a shielding plate installed between the two steel plates. The bottom of the shielding plate has several auxiliary grooves, and a movable plate is slidably connected inside each of the auxiliary grooves. A positioning screw is threadedly connected to the top of the movable plate on the side away from the auxiliary grooves. The bottom of the steel plates has an adaptation groove corresponding to the position of the movable plate. A rubber plate, which is arc-shaped, is connected to the top of the movable plate. Two buffer plates are connected to the top of the movable plate. This utility model, through the cooperation of the shielding plate and the rubber plate, covers the toothed area of ​​the expansion joint without affecting its normal opening and closing, effectively preventing rainwater from seeping in and freezing. The arc-shaped rubber plate guides drainage, and the buffer plates support deformation, improving drainage and anti-slip performance, and enhancing traffic stability and bridge operation safety under severe weather conditions.

Description

Technical Field

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

[0002] Bridge expansion joints are pre-reserved gaps set at the connection points of adjacent components (such as beams and bridge decks) in a bridge structure. They are an indispensable and important structural component of a bridge. Their main function is to accommodate structural displacement and deformation caused by factors such as changes in ambient temperature, vehicle loads, concrete creep and shrinkage, uneven settlement of the foundation, and earthquakes during long-term use. By properly setting expansion joints, it is possible to ensure that the bridge deck remains flat and continuous when relative displacement occurs, thereby avoiding structural damage and extending the service life of the bridge.

[0003] Existing toothed expansion joint structures have large gaps between the tooth grooves. In rainy or snowy weather, rainwater can easily seep into the gaps and freeze when the temperature is low, forming ice blockages or ice layers. This can cause vehicles to slip and brake, posing a significant safety hazard.

[0004] Therefore, in view of the problem that the existing toothed expansion joints are prone to water accumulation and freezing in rainy and snowy weather due to their large tooth gaps, resulting in ice blockage or ice layer coverage, vehicles are prone to slipping and unstable braking when passing through, which poses a significant safety hazard, there is an urgent need to design a new type of protective device for bridge expansion joints. Utility Model Content

[0005] In order to overcome the problem that existing toothed expansion joints are prone to water accumulation and freezing in rainy and snowy weather due to their large tooth gaps, resulting in ice blockage or ice layer coverage, vehicles are prone to slipping and unstable braking when passing through, which poses a significant safety hazard.

[0006] The technical solution of this utility model is as follows: a protective device for bridge expansion joints, comprising two steel plates and a shield plate installed between the two steel plates. The bottom of the shield plate has several auxiliary grooves, and a movable plate is slidably connected inside the auxiliary grooves. A positioning screw is threadedly connected to the top of the movable plate on the side away from the auxiliary grooves. An adaptation groove is opened at the bottom of the shield plate corresponding to the position of the movable plate. A rubber plate is connected to the top of the movable plate. The rubber plate is arc-shaped. Two buffer plates are connected to the top of the movable plate. The buffer plates are movably connected to the rubber plates. The rubber plates are used to support the buffer plates. The rubber plates move within the adaptation grooves. The positioning screws are connected to the external bridge expansion joint.

[0007] Preferably, by setting up a baffle plate to cover the gaps, the movable plate is connected to the external bridge expansion joint via positioning screws. When the expansion joint opens and closes, the movable plate slides on the groove. The sliding of the movable plate causes the rubber plate to move out of the matching groove. The buffer plate is used to support the rubber plate and prevent the rubber plate from deforming due to repeated rolling. This design allows the baffle plate to block rainwater, and together with the arc-shaped rubber plate, it allows rainwater to flow outward, preventing a large amount of rainwater from flowing into the gaps during rain and snow, which could lead to icing and slipping. This significantly improves the drainage and anti-slip performance of the expansion joint under extreme weather conditions and effectively prevents vehicle skidding accidents.

[0008] Preferably, an expansion bolt is connected to one end of the steel plate near the baffle, and an arc plate is connected to the top of the baffle.

[0009] Preferably, the top of the arc plate is provided with anti-slip grooves, which increase the friction between the tire and the arc plate.

[0010] Preferably, a cushioning pad is connected to the top of the shielding plate, which supports the arc plate.

[0011] Preferably, the arc plate compresses the buffer pad to shrink the buffer pad, and the expansion bolts are used to fix the steel plate to both sides of the external bridge expansion joint.

[0012] Preferably, steel plates are used to shield both sides of the external bridge expansion joints, and the shielding plates block rainwater so that the water source flows outward through the shape of the rubber plate.

[0013] Preferably, the shape of the arc-shaped plate can guide rainwater to flow to both sides, and the arc-shaped plate is used to replace the speed bump.

[0014] The beneficial effects of this utility model are:

[0015] 1. By installing shielding plates and rubber sheets, the gap area of ​​the bridge expansion joint can be covered without hindering movement during the opening and closing process. This significantly reduces the risk of rainwater seeping into the gap and freezing in rainy or snowy weather. The arc-shaped rubber sheet guides the water flow outward, and together with the buffer plate, it provides deformation support, ensuring that the rubber sheet remains tightly fitted and not easily deformed under long-term repeated rolling. This effectively improves the drainage efficiency and anti-skid performance of the expansion joint, enhances the stability of vehicle traffic, and improves the operational safety of the bridge in severe weather. Attached Figure Description

[0016] Figure 1 The diagram shown is a three-dimensional structural schematic of the protective device for bridge expansion joints according to this utility model.

[0017] Figure 2 The diagram shown is a three-dimensional bottom view of the protective device for bridge expansion joints according to this utility model.

[0018] Figure 3 The diagram shown is a three-dimensional side sectional view of the protective device for bridge expansion joints according to this utility model.

[0019] Figure 4 The diagram shown is a three-dimensional top-section structural diagram of the protective device for bridge expansion joints according to this utility model.

[0020] Figure 5 This invention relates to a protective device for bridge expansion joints. Figure 4 Enlarged structural diagram of point A in the middle.

[0021] Explanation of reference numerals in the attached drawings: 1. Steel plate; 21. Baffle plate; 22. Auxiliary groove; 23. Movable plate; 24. Positioning screw; 25. Adaptor groove; 26. Rubber plate; 27. Buffer plate; 31. Expansion screw; 32. Arc plate; 33. Anti-slip groove; 34. Buffer pad. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Please see Figures 1-5 This utility model provides an embodiment of a protective device for bridge expansion joints, comprising two steel plates 1 and a shielding plate 21 installed between the two steel plates 1. The bottom of the shielding plate 21 has several auxiliary grooves 22. A movable plate 23 is slidably connected inside the auxiliary grooves 22. A positioning screw 24 is threadedly connected to the top of the movable plate 23 on the side away from the auxiliary grooves 22. An adaptation groove 25 is provided at the bottom of the shielding plate 21 corresponding to the position of the movable plate 23. A rubber plate 26 is connected to the top of the movable plate 23. The rubber plate 26 is arc-shaped. Two buffer plates 27 are connected to the top of the movable plate 23. The buffer plates 27 are movably connected to the rubber plates 26. The rubber plates 26 are used to support the buffer plates 27 and move within the adaptation grooves 25. The positioning screws 24... 4. Connecting to external bridge expansion joints: A shielding plate 21 is installed to cover the gaps. After the movable plate 23 is connected to the external bridge expansion joint via positioning screws 24, when the expansion joint opens and closes, the movable plate 23 slides on the groove. The sliding of the movable plate 23 causes the rubber plate 26 to move out of the adapter groove 25. The buffer plate 27 is used to support the rubber plate 26. The buffer plate 27 is arc-shaped to avoid repeated rolling and deformation of the rubber plate 26. This design allows the shielding plate 21 to block rainwater, and together with the arc-shaped rubber plate 26, allows rainwater to flow outward, preventing a large amount of rainwater from flowing into the gaps during rain and snow, which could lead to icing and slipping. This significantly improves the drainage and anti-slip performance of the expansion joint under extreme weather conditions and effectively prevents vehicle skidding accidents.

[0024] Please see Figures 1-5In this embodiment, an expansion bolt 31 is connected to one end of the steel plate 1 near the baffle plate 21. An arc plate 32 is connected to the top of the baffle plate 21. An anti-slip groove 33 is provided on the top of the arc plate 32. The anti-slip groove 33 increases the friction between the tire and the arc plate 32. A buffer pad 34 is connected to the top of the baffle plate 21. The buffer pad 34 supports the arc plate 32. The arc plate 32 is made of polyurethane material. Polyurethane material has the characteristics of wear resistance, corrosion resistance, strong weather resistance and bright color. With the support of the buffer pad 34, the arc plate 32 can be used as a speed bump. The anti-slip groove 33 increases the friction of the tire when it passes over the arc plate 32, and prevents the arc plate 32 from getting wet in rainy or snowy weather, making it less likely for the tire to slip.

[0025] Please see Figures 2-5 In this embodiment, the arc plate 32 compresses the buffer pad 34 to cause the buffer pad 34 to shrink. The expansion screw 31 is used to fix the steel plate 1 to both sides of the external bridge expansion joint. The steel plate 1 is used to shield both sides of the external bridge expansion joint. The shielding plate 21 blocks rainwater, allowing the water source to flow outward through the shape of the rubber plate 26. The shape of the arc plate 32 can guide the rainwater to flow to both sides. The arc plate 32 is used to replace the speed bump. The steel plate 1 is installed on both sides of the bridge expansion joint by the expansion screw 31, which not only provides protection and shielding but also improves aesthetics. Rainwater falls on the arc plate 32 and is guided, and then guided through the shielding plate 21 to the arc-shaped rubber plate 26, so that the rainwater is further guided to enter the ground. The distribution between the movable plates 23 can be adjusted as needed.

[0026] In actual operation, steel plate 1 is first fixed to both sides of the bridge expansion joint using expansion bolts 31. Then, movable plate 23 is aligned with the external expansion joint structure, and movable plate 23 is connected to the expansion joint using positioning screws 24, thus completing the installation. When the bridge deforms, the bridge expansion joint moves, causing movable plate 23 to slide on the groove. The sliding of movable plate 23 causes rubber plate 26 to move out of the fitting groove 25. When a car tire rolls over rubber plate 26, buffer plate 27 supports rubber plate 26, thereby allowing the car tire to roll over the rubber plate 26. After initially moving upwards, the tire passes over the rubber plate 26, then over the shield 21 and the arc plate 32. The outer surface of the arc plate 32 can be painted with different colors to warn the driver to slow down, thereby better protecting the expansion joint and improving its service life. After the tire rolls over the arc plate 32, the buffer pad 34 cushions the arc plate 32, reducing the pressure on the tire. This design allows the shield 21 to block rainwater, and together with the arc-shaped rubber plate 26, it allows rainwater to flow outwards, preventing a large amount of rainwater from flowing into the gap during rainy or snowy weather.

[0027] Through the above steps, by setting up the shielding plate 21 and the rubber plate 26, the toothed joint area is effectively covered without affecting the normal opening and closing of the bridge expansion joint, reducing the risk of rainwater seeping in and freezing during rainy and snowy weather. The arc-shaped rubber plate 26 guides the water flow outward, and the buffer plate 27 provides support to prevent the rubber plate 26 from deforming due to long-term rolling, improving drainage efficiency and anti-slip performance, enhancing vehicle traffic stability and bridge operation safety. This solves the problem that existing toothed expansion joints, due to their large toothed gaps, are prone to water accumulation and freezing during rainy and snowy weather, causing ice blockage or ice layer coverage, making it easy for vehicles to slip and brake unstable, posing a significant safety hazard.

Claims

1. A protective device for bridge expansion joints, comprising two steel plates (1); characterized in that: It also includes a baffle plate (21) installed between two steel plates (1). The bottom of the baffle plate (21) has several auxiliary grooves (22). A movable plate (23) is slidably connected inside the auxiliary grooves (22). A positioning screw (24) is threadedly connected to the top of the movable plate (23) away from the auxiliary grooves (22). An adapter groove (25) is opened at the bottom of the baffle plate (21) corresponding to the position of the movable plate (23). A rubber plate (26) is connected to the top of the movable plate (23). The rubber plate (26) is arc-shaped. Two buffer plates (27) are connected to the top of the movable plate (23). The buffer plate (27) is movably connected to the rubber plate (26). The rubber plate (26) is used to support the buffer plate (27). The rubber plate (26) moves in the adapter groove (25). The positioning screw (24) is connected to the external bridge expansion joint.

2. The protective device for bridge expansion joints according to claim 1, characterized in that: An expansion bolt (31) is connected to one end of the steel plate (1) near the shield (21), and an arc plate (32) is connected to the top of the shield (21).

3. The protective device for bridge expansion joints according to claim 2, characterized in that: The top of the arc plate (32) is provided with anti-slip grooves (33), which increase the friction between the tire and the arc plate (32).

4. The protective device for bridge expansion joints according to claim 3, characterized in that: The top of the shield (21) is connected to a cushioning pad (34), which supports the arc plate (32).

5. The protective device for bridge expansion joints according to claim 4, characterized in that: The arc plate (32) squeezes the buffer pad (34) to shrink the buffer pad (34), and the expansion screw (31) is used to fix the steel plate (1) to both sides of the external bridge expansion joint.

6. The protective device for bridge expansion joints according to claim 5, characterized in that: The steel plate (1) is used to shield the two sides of the external bridge expansion joint, and the shielding plate (21) blocks the rainwater so that the water source flows outward through the shape of the rubber plate (26).

7. The protective device for bridge expansion joints according to claim 6, characterized in that: The shape of the arc plate (32) can guide rainwater to flow to both sides, and the arc plate (32) is used to replace the speed bump.

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