Bridge expansion joint assembly

Abstract

The utility model provides a bridge expansion joint assembly which comprises an expansion joint reserved groove reserved between two sets of bridge bodies, a first pair of insertion plates and a second pair of insertion plates are detachably installed at one ends of the two sets of bridge bodies respectively, and the first pair of insertion plates and the second pair of insertion plates can be connected in a clamped mode. The first opposite-inserting plate and the second opposite-inserting plate are located in the expansion joint reserved groove, and buffering assemblies are attached to the lower surface of the first opposite-inserting plate and the lower surface of the second opposite-inserting plate. Then the two groups of opposite inserting plates rotate with the rotating rod as the axis, so that the change caused by the pressure of the vehicle is flexibly adapted, when the pressure promotes the opposite inserting plates to descend, the opposite inserting plates stably rotate around the rotating rod and are pressed downwards to make contact with the buffering assembly, efficient damping is achieved, and under the action of the restoring force of the buffering assembly, the buffering effect is good. The opposite inserting plate can rotate to the relative initial position with the rotating rod as the axis, preparation is made for follow-up vehicles to pass through, and stability and comfort in the driving process are guaranteed in an all-around mode.

Description

Technical Field

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

[0002] Bridge expansion joints are joints installed to accommodate bridge deck deformation, typically between the ends of two beams, between a beam end and an abutment, or at hinged joints. These joints must allow free expansion and contraction in both directions parallel and perpendicular to the bridge axis, be robust and reliable, and provide a smooth ride for vehicles without bumps or noise. They must also prevent rainwater and debris from seeping in and causing blockages. Installation, inspection, maintenance, and cleaning should be simple and convenient. At expansion joint locations, the railings must be disconnected from the bridge deck pavement.

[0003] For example, the national authorized patent announcement number CN221721348U discloses a bridge expansion joint structure, belonging to the field of bridge engineering. It includes two bridge segments with a deformation joint between adjacent segments. Expansion components are provided on the edges of both bridge segments. Each expansion component includes multiple bases arranged in an array along the length of the deformation joint. Expansion blocks and support seats are fixedly connected to the side of each base facing the deformation joint, and the expansion blocks and support seats are staggered. An installation shaft is included, which is fixed relative to the bridge segments. The length direction of the installation shaft is consistent with the length direction of the deformation joint. The installation shaft passes through multiple bases, and the bases are rotatably connected to the bridge segments via the installation shaft. The expansion component of this application can effectively adapt to situations where adjacent bridge segments are misaligned in height.

[0004] However, the aforementioned bridge expansion joint components have gaps on their surface. When vehicles are driving, stones, sand, and other impurities stirred up by the friction between the wheels and the road surface can easily get stuck in these gaps, causing malfunctions during expansion and contraction. When vehicles pass over them, abnormal bumps and vibrations will occur, affecting driving comfort. Utility Model Content

[0005] The present invention aims to solve the problems mentioned in the background art by providing a bridge expansion joint assembly.

[0006] The specific technical solution is as follows:

[0007] A bridge expansion joint assembly includes: an expansion joint reserved groove between two sets of bridge beams; a first pair of insert plates and a second pair of insert plates are respectively detachably installed at one end of each of the two sets of bridge beams; the first pair of insert plates and the second pair of insert plates can be snapped together; the first pair of insert plates and the second pair of insert plates are located within the expansion joint reserved groove; a buffer component is attached to the lower surface of both the first pair of insert plates and the second pair of insert plates; multiple sets of installation grooves are provided at one end of the upper surface of the bridge beams; the multiple sets of installation grooves are T-shaped; the upper surface of each installation groove has a hollow groove larger than the outline of the installation groove; a pressure-reducing plate is provided in the hollow groove; a fixing bolt is inserted into the installation groove; and an installation block is threadedly connected to the installation groove through the fixing bolt.

[0008] As a preferred embodiment of this utility model, the first pair of insert plates and the second pair of insert plates are provided with holes on one side. The other segment of the mounting block provided on the two sets of bridge beams is respectively located at the holes of the first pair of insert plates and the second pair of insert plates. The first pair of insert plates and the second pair of insert plates are provided with through holes on one side. A rotating rod is rotatably installed in the through hole. The rotating rod passes through the through hole and extends to one end of the mounting block located at the hole.

[0009] As a preferred embodiment of this utility model, a soft rubber barrier is provided at one end of the upper surface of the first pair of insert plates and the second pair of insert plates. The soft rubber barrier is made of a polymer elastomer material blended with polyurethane and nitrile rubber.

[0010] As a preferred embodiment of this utility model, the buffer assembly includes a fixing plate, and the fixing plate is provided in two sets. The two sets of fixing plates are respectively disassembled and installed in the reserved groove provided in the bridge beam. A positioning bolt is inserted into one end of the upper surface of the fixing plate, and a rubber strip is connected between the two sets of fixing plates. V-grooves are respectively provided on the right side of the upper surface and the left side of the lower surface of the rubber strip.

[0011] As a preferred embodiment of this utility model, multiple sets of fixing shells are fixedly installed on the upper surface of the fixing plate. A damper is provided on the lower surface of the inner wall of the fixing shell. A spring is connected to the upper surface of the damper. A downward pressure rod is inserted into the upper half segment of the inner wall of the fixing shell. The upper surface of the spring is connected to one end of the lower surface of the downward pressure rod.

[0012] As a preferred embodiment of this utility model, a spring plate is fixedly connected to the upper surface of the pressing rod, a soft rubber plate is provided on the upper surface of the spring plate, and a rubber bonding ring is provided at the outer periphery of the upper half of the pressing rod. The two sets of spring plates are respectively located at one end of the lower surface of the first pair of insert plates and the second pair of insert plates.

[0013] This utility model has the following beneficial effects:

[0014] 1. The bridge expansion joint assembly provided by this utility model, through the design of the first pair of insert plates, the second pair of insert plates, the mounting groove, the pressure-reducing plate, and the buffer assembly, can effectively improve the driving comfort of vehicles passing through the bridge expansion joint. The first pair of insert plates and the second pair of insert plates are interlocked to form a relatively stable connection structure that can be flexibly adjusted with the expansion and contraction of the bridge. When the vehicle passes through the soft rubber barrier provided on the upper surface of the first pair of insert plates and the second pair of insert plates, the pressure it receives can be concentrated in the root area connecting the first pair of insert plates and the second pair of insert plates through the soft rubber barrier. Then, the two sets of insert plates rotate around the rotating rod as the axis. This allows for flexible adaptation to changes in vehicle pressure. When pressure causes the insert plates to descend, they rotate smoothly around the rotating rod, pressing down to contact the buffer assembly for efficient shock absorption. Under the restoring force of the buffer assembly, the insert plates can rotate back to their initial position via the rotating rod, preparing for subsequent vehicle passage. This ensures a smooth and comfortable driving experience in all aspects. Furthermore, the snap-fit ​​installation between the first and second insert plates reduces gaps, preventing impurities from getting stuck in the gaps and affecting the use of the expansion joint. The pressure-reducing plate also reduces the crushing of the installation blocks by passing vehicles.

[0015] 2. The bridge expansion joint assembly provided by this utility model, through the design of a rebound plate, rubber bonding ring, spring, and pressure bar, works by having the first pair of insert plates and the second pair of insert plates come into contact with the rebound plate under pressure. The soft rubber plate on the upper surface of the rebound plate initially buffers the pressure transmitted from the insert plates, dispersing the pressure concentration point and avoiding localized damage caused by direct rigid contact between the insert plates and the rebound plate. Then, the pressure bar connected to the lower surface of the rebound plate presses down within the fixed housing. During this pressing process, the spring within the fixed housing buffers the pressure applied by the vehicle, preventing direct transmission of pressure to the bridge structure. The damper and rubber bonding ring absorb some vibration energy, further enhancing the buffering effect and ensuring driving comfort when vehicles pass over the expansion joint. Finally, the V-grooves on the right side of the upper surface and the left side of the lower surface of the rubber strip effectively adapt to bridge changes, thereby effectively extending the service life of the bridge expansion joint assembly and further improving vehicle safety and comfort. Attached Figure Description

[0016] Figure 1 A schematic diagram of the overall structure of a bridge expansion joint assembly provided in an embodiment of this utility model. Figure 1 ;

[0017] Figure 2 Schematic diagram of the soft rubber barrier structure of the bridge expansion joint assembly provided in this embodiment of the utility model Figure 2 ;

[0018] Figure 3 Schematic diagram of the first and second pairs of insert plates of the bridge expansion joint assembly provided in this embodiment of the utility model. Figure 3 ;

[0019] Figure 4 Schematic diagram of the buffer component structure of the bridge expansion joint assembly provided in this embodiment of the utility model Figure 4 ;

[0020] Figure 5 Schematic diagram of the spring structure of the bridge expansion joint assembly provided in this embodiment of the utility model Figure 5 .

[0021] In the attached image:

[0022] 1. Bridge beam; 101. Mounting slot; 102. Pressure relief plate; 103. Mounting block; 104. Fixing bolt;

[0023] 2. First pair of insert plates; 201. Second pair of insert plates; 202. Soft rubber roadblock; 203. Rotating pole;

[0024] 3. Buffer assembly; 301. Fixing plate; 302. Rubber strip; 303. Positioning bolt; 304. Fixing shell; 305. Rebound plate; 306. Soft rubber plate; 307. Downward pressure rod; 308. Rubber bonding ring; 309. Spring; 310. Damper. Detailed Implementation

[0025] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0026] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of this utility model, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0027] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, 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, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0028] In the description of this utility model, unless otherwise explicitly specified and limited, the term "connection" or similar designation indicating the connection relationship between components should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] Example 1

[0030] The bridge expansion joint assembly provided in this embodiment, such as Figures 1-5 As shown, it includes: a reserved expansion joint groove between two sets of bridge beams 1; a first pair of insert plates 2 and a second pair of insert plates 201 are respectively detached and installed at one end of the two sets of bridge beams 1; the first pair of insert plates 2 and the second pair of insert plates 201 can be snapped together; the first pair of insert plates 2 and the second pair of insert plates 201 are located in the reserved expansion joint groove; buffer components 3 are attached to the lower surfaces of the first pair of insert plates 2 and the second pair of insert plates 201; multiple sets of installation grooves 101 are provided at one end of the upper surface of the bridge beam 1; the multiple sets of installation grooves 101 are T-shaped; the upper surface of the installation groove 101 is provided with a hollow groove larger than the outline of the installation groove 101; a pressure reducing plate 102 is provided in the hollow groove; a fixing bolt 104 is inserted into the installation groove 101; and an installation block 103 is threadedly connected to the installation groove 101 by the fixing bolt 104. The first pair of insert plates 2 and the second pair of insert plates 201 each have a hole on one side. The other segment of the mounting block 103 on each of the two sets of bridge beams 1 is located at the hole corresponding to the first pair of insert plates 2 and the second pair of insert plates 201. The first pair of insert plates 2 and the second pair of insert plates 201 each have a through hole on one side. A rotating rod 203 is rotatably installed in the through hole, passing through the through hole and extending to one end of the mounting block 103 located at the hole. A soft rubber barrier 202 is provided at one end of the upper surface of the first pair of insert plates 2 and the second pair of insert plates 201. The soft rubber barrier 202 is made of a high-molecular-weight elastomer material blended from polyurethane and nitrile rubber.

[0031] The design of the first pair of insert plates 2, the second pair of insert plates 201, the mounting groove 101, the pressure-reducing plate 102, and the buffer assembly 3 effectively improves the driving comfort of vehicles passing through bridge expansion joints. The interlocking of the first pair of insert plates 2 and the second pair of insert plates 201 forms a relatively stable connection structure that can flexibly adjust with bridge expansion and contraction. When a vehicle passes over the soft rubber barriers 202 on the upper surfaces of the first pair of insert plates 2 and the second pair of insert plates 201, the pressure it experiences is concentrated at the root area connecting the first pair of insert plates 2 and the second pair of insert plates 201 through the soft rubber barriers 202. Then, the two sets of insert plates rotate around the rotating rod 203 as an axis. The system flexibly adapts to changes in vehicle pressure. When the pressure causes the insert plates to descend, they rotate smoothly around the rotating rod 203 and press down to contact the buffer component 3, achieving efficient shock absorption. Under the restoring force of the buffer component 3, the insert plates can rotate back to their relative initial position via the rotating rod 203, preparing for subsequent vehicles to pass. This ensures a smooth and comfortable driving experience in all aspects. Furthermore, the interlocking installation between the first pair of insert plates 2 and the second pair of insert plates 201 reduces gaps, preventing impurities from getting stuck in the gaps and affecting the use of the expansion joint. The pressure-reducing plate 102 can reduce the crushing of the mounting block 103 by passing vehicles.

[0032] Example 2

[0033] The bridge expansion joint assembly provided in this embodiment, such as Figures 4-5 As shown, the system includes: a buffer assembly 3 comprising a fixing plate 301, of which two sets are provided. The two sets of fixing plates 301 are respectively detached and installed in the reserved slots provided in the bridge beam 1. A positioning bolt 303 is inserted into one end of the upper surface of the fixing plate 301. A rubber strip 302 is connected between the two sets of fixing plates 301. V-grooves are respectively provided on the right side of the upper surface and the left side of the lower surface of the rubber strip 302. Multiple sets of fixing shells 304 are fixedly installed on the upper surface of the fixing plate 301. A damper 310 is provided on the lower surface of the inner wall of the fixing shell 304. A spring 309 is connected to the upper surface of the damper 310. A pressure rod 307 is inserted into the upper half segment of the inner wall of the fixing shell 304. The upper surface of the spring 309 is connected to one end of the lower surface of the pressure rod 307. A spring plate 305 is fixedly connected to the upper surface of the pressure rod 307. A soft rubber plate 306 is provided on the upper surface of the spring plate 305. A rubber bonding ring 308 is provided on the outer periphery of the upper half of the pressure rod 307. The two sets of spring plates 305 are located at one end of the lower surface of the first pair of insert plates 2 and the second pair of insert plates 201, respectively.

[0034] Through the design of the rebound plate 305, rubber bonding ring 308, spring 309, and downward pressure rod 307, the first pair of insert plates 2 and the second pair of insert plates 201 are subjected to pressure and come into contact with the rebound plate 305. Since the upper surface of the rebound plate 305 is provided with a soft rubber plate 306, it can initially buffer the pressure transmitted from the insert plates, disperse the pressure concentration point, and avoid local damage caused by direct rigid contact between the insert plates and the rebound plate 305. Then, the downward pressure rod 307 connected to the lower surface of the rebound plate 305 is pressed down in the fixed shell 304. During the pressing process, the spring 309 provided in the fixed shell 304 buffers the pressure applied by the vehicle and avoids the pressure being directly transmitted to the bridge structure. Then, the damper 310 and the rubber bonding ring 308 can absorb some vibration energy, further improving the buffering effect and ensuring the driving comfort when the vehicle passes through the expansion joint. Finally, the V-grooves provided on the right side of the upper surface and the left side of the lower surface of the rubber strip 302 can effectively adapt to the changes in the bridge, thereby effectively extending the service life of the bridge expansion joint components and further improving the safety and comfort of vehicle driving.

[0035] In summary, the bridge expansion joint assembly provided in this embodiment has the following advantages: it can effectively prevent impurities such as stones and sand from getting stuck in the gaps when vehicles are driving, reducing the tedious problems caused by manual cleaning and the malfunctions during the expansion and contraction process, and can effectively improve the driving comfort when vehicles pass by.

[0036] In use, a relatively stable connection structure that can be flexibly adjusted with the expansion and contraction of the bridge is formed by the interlocking of the first pair of insert plates 2 and the second pair of insert plates 201. A rotating rod 203 is rotatably connected to one side of both the first pair of insert plates 2 and the second pair of insert plates 201. Therefore, when subjected to the pressure of a vehicle passing over the soft rubber barriers 202 on the upper surface of the first pair of insert plates 2 and the second pair of insert plates 201, the pressure is concentrated in the root area connecting the first pair of insert plates 2 and the second pair of insert plates 201 through the soft rubber barriers 202. Then, the two sets of insert plates rotate around the rotating rod 203. When the pressure causes the insert plates to descend, the insert plates rotate smoothly around the rotating rod 203, pressing down into contact with the bridge. Upon reaching the rebound plate 305, the soft rubber plate 306 on the upper surface of the rebound plate 305 can initially buffer the pressure transmitted from the insert plate, disperse the pressure concentration point, and avoid local damage caused by direct rigid contact between the insert plate and the rebound plate 305. Then, the pressing rod 307 connected to the lower surface of the rebound plate 305 presses down in the fixed housing 304. During the pressing process, the spring 309 provided in the fixed housing 304 buffers the pressure applied by the vehicle, preventing the pressure from being directly transmitted to the bridge structure. Then, under the action of the restoring force of the spring 309, the insert plate can rotate back to the relative initial position through the rotating rod 203 as the axis, preparing for the subsequent vehicle to pass, and ensuring the smoothness and comfort of the driving process in all aspects.

[0037] The above are merely preferred embodiments of the present utility model and are not intended to limit the implementation methods and protection scope of the present utility model. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A bridge expansion joint assembly, characterized in that, include: Expansion joint reserved grooves are left between the two sets of bridge beams (1). The first pair of insert plates (2) and the second pair of insert plates (201) are respectively disassembled and installed at one end of the two sets of bridge beams (1). The first pair of insert plates (2) and the second pair of insert plates (201) can be snapped together. The first pair of insert plates (2) and the second pair of insert plates (201) are located in the expansion joint reserved grooves. The lower surfaces of the first pair of insert plates (2) and the second pair of insert plates (201) are attached with buffer components (3). The upper surface of the bridge beam (1) is provided with multiple sets of installation grooves (101). The multiple sets of installation grooves (101) are T-shaped. The upper surface of the installation groove (101) is provided with a hollow groove larger than the outline of the installation groove (101). The hollow groove is provided with a pressure reducing plate (102). The installation groove (101) is inserted with a fixing bolt (104). The installation groove (101) is threadedly connected with an installation block (103) through the fixing bolt (104).

2. The bridge expansion joint assembly according to claim 1, characterized in that, The first pair of insert plates (2) and the second pair of insert plates (201) are provided with holes on one side. The other segment of the mounting block (103) provided on the two sets of bridge beams (1) is located at the holes of the first pair of insert plates (2) and the second pair of insert plates (201), respectively. The first pair of insert plates (2) and the second pair of insert plates (201) are provided with through holes on one side. A rotating rod (203) is rotatably installed in the through hole. The rotating rod (203) passes through the through hole and extends to one end of the mounting block (103) located at the hole.

3. The bridge expansion joint assembly according to claim 1, characterized in that, The first pair of insert plates (2) and the second pair of insert plates (201) are each provided with a soft rubber roadblock (202) at one end of their upper surfaces. The soft rubber roadblock (202) is made of a polymer elastomer material that is a blend of polyurethane and nitrile rubber.

4. The bridge expansion joint assembly according to claim 1, characterized in that, The buffer assembly (3) includes a fixing plate (301), which is provided in two sets. The two sets of fixing plates (301) are respectively disassembled and installed in the reserved slots provided in the bridge beam (1). A positioning bolt (303) is inserted into one end of the upper surface of the fixing plate (301). A rubber strip (302) is connected between the two sets of fixing plates (301). V-grooves are respectively provided on the right side of the upper surface and the left side of the lower surface of the rubber strip (302).

5. The bridge expansion joint assembly according to claim 4, characterized in that, Multiple sets of fixed shells (304) are fixedly installed on the upper surface of the fixed plate (301). A damper (310) is provided on the lower surface of the inner wall of the fixed shell (304). A spring (309) is connected to the upper surface of the damper (310). A lower pressure rod (307) is inserted into the upper half segment of the inner wall of the fixed shell (304). The upper surface of the spring (309) is connected to one end of the lower surface of the lower pressure rod (307).

6. The bridge expansion joint assembly according to claim 4, characterized in that, A spring plate (305) is fixedly connected to the upper surface of the pressing rod (307). A soft rubber plate (306) is provided on the upper surface of the spring plate (305). A rubber bonding ring (308) is provided on the outer periphery of the upper half of the pressing rod (307). The two sets of spring plates (305) are located at one end of the lower surface of the first pair of insert plates (2) and the second pair of insert plates (201), respectively.

Images