A new replaceable bridge expansion joint

Abstract

The utility model relates to a new replaceable bridge expansion joint, belongs to bridge engineering technical field, it includes the connecting assembly that sets up in pair at the junction of opposite two bridge bodies, the upper end of bridge body pair outer connecting side is equipped with installation groove, and the connecting assembly is fixedly installed in the installation groove of corresponding side bridge body, and the rubber band that can dismantle sealed fixed connection is equipped between the two connecting assemblies, and the outside of connecting assembly is equipped with anchor reinforcement. The utility model discloses structure is simpler, and the rubber band's dismounting is more convenient and fast.

Description

Technical Field

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

[0002] Expansion joints are a crucial ancillary facility for bridge structures. Their primary function is to regulate and accommodate bridge deck displacement and deformation caused by vehicle loads and temperature changes, ensuring the safe use of the bridge. They also prevent rainwater and other substances from eroding the bridge structure and affecting its service life.

[0003] Currently, there are two types of expansion joints on the market: ordinary expansion joints and replaceable expansion joints. Both have certain shortcomings. For example, ordinary expansion joints cannot be replaced after the rubber strips age, accumulate water, or break. In severe cases, the rubber strips may even fall off completely, causing the expansion joint to fail. As for the quick-replaceable expansion joints currently on the market, they mostly use a large and small cavity design, which requires more tools, involves complicated installation steps, and has low installation efficiency. Utility Model Content

[0004] The purpose of this utility model is to provide a bridge expansion joint with a rubber strip that is easier to replace, in order to solve the technical problems that the rubber strip of the existing ordinary expansion joint cannot be replaced, and the installation and replacement procedures of the rubber strip of the existing quick-replacement expansion joint are also cumbersome.

[0005] To achieve the above objectives, the specific technical solution of this utility model is as follows:

[0006] A novel replaceable bridge expansion joint includes a pair of connecting components installed at the connection of two opposing bridge bodies. An installation groove is provided at the upper end of the external connection side of the bridge body, and the connecting components are fixedly installed in the installation groove of the corresponding side of the bridge body. A detachable and sealed rubber strip is provided between the two corresponding connecting components, and anchoring steel bars are provided on the outside of the connecting components.

[0007] The connecting assembly includes an L-shaped base plate. The outer end of the base plate is located in the mounting groove of the bridge body, and its inner end extends outward to the external connection side of the bridge body. Anchor bars are located on the outer side of the base plate, and their inner ends are fixedly connected to the base plate. Above the crossbeam of the base plate, there is a corresponding groove plate whose outer end is fixedly connected to the upper end of the inner side of the vertical beam. A locking plate that can move up and down is provided between the crossbeam and the groove plate. The end of the rubber band is detachably fixedly installed between the locking plate and the groove plate. Threaded holes are provided on the crossbeam of the base plate corresponding to the gap in the bridge body. A corresponding bolt is provided in the threaded hole, and the top of the bolt abuts against the bottom surface of the locking plate. A guide assembly corresponding to the locking plate is provided between the base plate and the groove plate.

[0008] Furthermore, the end of the rubber belt is provided with an upwardly protruding mounting seat, and the bottom surface of the upper plate of the groove is provided with a groove corresponding to the mounting seat, and the upper end of the mounting seat is embedded in the groove.

[0009] Furthermore, the bottom surface of the groove plate on the outer side of the groove extends downward to form a bottom protrusion. A locking plate is provided between the bottom protrusion and the top surface of the crossbeam of the bottom plate. The guide assembly includes a positioning pin vertically arranged below the bottom protrusion. The locking plate is provided with a positioning hole corresponding to the positioning pin. The top end of the positioning pin is fixedly connected to the bottom surface of the bottom protrusion, and its bottom end passes through the positioning hole and is fixedly connected to the top surface of the crossbeam of the bottom plate. The positioning pin and the positioning hole are slidably connected.

[0010] Furthermore, the outer side of the base plate is provided with multiple anchoring steel bars, which are evenly arranged in the horizontal direction. The base plate is provided with multiple threaded holes, and each threaded hole is provided with a corresponding bolt. Multiple positioning pins are provided between the upper plate and the base plate, and multiple positioning holes corresponding to the positioning pins are provided on the locking plate.

[0011] Furthermore, the bolt is provided with a corresponding limiting nut, which is located below the base plate.

[0012] Furthermore, corresponding water-retaining platforms are provided at both the front and rear ends of the mounting groove.

[0013] Furthermore, the upper and lower sides of the rubber belt mounting base are serrated, and a central hole is provided at the center of the mounting base.

[0014] This utility model features a new replaceable bridge expansion joint structure that is simpler, requires fewer tools for disassembling and assembling the rubber strip, has a simpler disassembly and assembly process, is more convenient and faster to operate, and has higher disassembly and assembly efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a top view structural diagram of the present invention;

[0017] Figure 3 This utility model Figure 1 A magnified view of a section at point A in the middle;

[0018] The markings in the diagram are as follows: 1. Anchoring steel bar; 2. Base plate; 21. Locating pin; 22. Locating hole; 3. Upper plate of the groove; 31. Groove; 32. Bottom protrusion; 4. Locking plate; 5. Rubber strip; 51. Mounting seat; 52. Center hole; 6. Bolt; 7. Limit nut; 8. Bridge body; 81. Mounting groove; 82. Water retaining platform. Detailed Implementation

[0019] To better understand the purpose, structure, and function of this utility model, the following description, in conjunction with the accompanying drawings, provides a more detailed account of a novel replaceable bridge expansion joint.

[0020] like Figure 1-3 As shown, the novel replaceable bridge expansion joint of this utility model includes a pair of connecting components arranged at the connection of two opposing bridge bodies 8. The two pairs of connecting components are respectively fixedly installed in the mounting groove 81 of the corresponding side bridge body 8. A rubber strip 5 is provided between the two corresponding connecting components. The two ends of the rubber strip 5 are respectively detachably and sealed to the connecting components on the corresponding side. An anchoring steel bar 1 is provided on the outside of each set of connecting components. In use, the anchoring steel bar 1 and the connecting components are fixedly installed in the mounting groove 81 of the corresponding side bridge body 8 by cement pouring, so that the rubber strip 5 can be detachably installed between the gaps of the two opposing bridge bodies 8, thereby achieving the purpose of preventing rainwater and other substances from corroding the main body of the bridge.

[0021] Furthermore, the mounting groove 81 is located at the upper end of the external connection side of the bridge body 8, and corresponding water-blocking platforms 82 are provided at its front and rear ends to prevent rainwater from entering the bridge body 8 and the area below the expansion joint from the non-connection side of the bridge body 8, thereby causing corrosion to the bridge body 8 below.

[0022] The connecting assembly includes a base plate 2, a groove upper plate 3, and a locking plate 4. The vertical section of the base plate 2 is L-shaped. Its vertical beam and the horizontal beam connected to the vertical beam are located in the mounting groove 81 of the bridge body 8. The inner end of the horizontal beam extends towards the gap on the external connection side of the bridge body 8. Multiple anchoring steel bars 1 are provided on the outer side of the base plate 2. The multiple anchoring steel bars 1 are evenly distributed horizontally from front to back on the outer side of the base plate 2. The inner end of the anchoring steel bars 1 is fixedly connected to the outer wall of the base plate 2. In this embodiment, the anchoring steel bars 1 and the base plate 2 are integrally formed and fixedly connected by welding. The groove upper plate 3 is located above the horizontal beam of the L-shaped base plate 2. Its outer side is attached to the upper end of the inner side of the vertical beam of the L-shaped base plate 2. The two are fixedly connected. In this embodiment, the two are fixedly connected by welding. The locking plate 4 is located between the horizontal beam of the base plate 2 and the groove upper plate 3. The end of the rubber strip 5 can... The rubber belt 5 is fixedly installed between the locking plate 4 and the upper plate 3. To facilitate the positioning and installation of the rubber belt 5, both ends of the rubber belt 5 are provided with upwardly protruding mounting seats 51. The bottom surface of the upper plate 3 is provided with an inwardly recessed groove 31, which corresponds to the mounting seat 51. The bottom plate 2 is provided with threaded holes. Multiple threaded holes are evenly distributed horizontally from front to back on the crossbeam of the bottom plate 2 located at the gap of the bridge body 8. Each threaded hole is provided with a corresponding bolt 6. The bolt 6 is inserted into the threaded hole from bottom to top, and the two are engaged with each other through threaded engagement. The top of the bolt 6 abuts against the bottom surface of the locking plate 4. A guide component corresponding to the locking plate 4 is provided between the bottom plate 2 and the upper plate 3. The locking plate 4 can move up and down along the guide component between the crossbeam of the bottom plate 2 and the upper plate 3 under the action of the bolt 6, thereby realizing the switching between clamping or releasing the corresponding end of the rubber belt 5 between it and the upper plate 3.

[0023] Furthermore, the guide assembly includes a positioning pin 21 and a positioning hole 22. The positioning pin 21 is located between the upper plate 3 of the groove and the locking plate 4. In this embodiment, the bottom surface of the upper plate 3 outside the groove 31 extends downward to form a bottom protrusion 32. The locking plate 4 is located between the bottom protrusion 32 and the top surface of the crossbeam of the bottom plate 2. The mounting seat 51 of the rubber belt 5 is installed in the groove 31 inside the bottom protrusion 32. The distance from the bottom surface of the bottom protrusion 32 to the top surface of the groove 31 is not greater than the thickness of the mounting seat 51 of the rubber belt 5. The positioning pin 21 is located below the bottom protrusion 32 and is vertically arranged. Multiple positioning pins 21 are evenly distributed horizontally from front to back below the bottom protrusion 32. The bottom surface of the bottom protrusion 32 is evenly distributed with positioning pins 21. The upper end of the positioning pin 21 is inserted into the pin hole corresponding to the pin 21, thereby fixing it to the bottom surface of the bottom protrusion 32. The locking plate 4 has multiple positioning holes 22 corresponding to the positioning pin 21 evenly distributed from front to back. The bottom end of the positioning pin 21 passes through the corresponding positioning hole 22 and is fixedly connected to the top surface of the crossbeam of the base plate 2. All positioning pins 21 and their corresponding positioning holes 22 are slidably connected. The locking plate 4 can slide up and down between the base plate 2 and the upper plate 3 of the groove along the positioning pin 21. The positioning pin 21 provides a guiding function for the up and down sliding of the locking plate 4. In this embodiment, the positioning pin 21 is fixedly connected to the upper plate 3 of the groove and the base plate 2 by welding.

[0024] Furthermore, the bolt 6 is provided with a corresponding limiting nut 7, which is located below the base plate 2. It can limit the upward movement distance of the bolt 6, preventing the bolt 6 from moving too far when it moves upward, thereby avoiding excessive force exerted by the locking plate 4 on the rubber belt 5, and thus preventing damage to the rubber belt 5 by the locking plate 4.

[0025] Furthermore, the upper and lower sides of the rubber belt 5 mounting base 51 are serrated. This design ensures the sealing of the connection, preventing external rainwater from entering the bridge body 8 below the expansion joint through the connection. It also improves the friction between the mounting base 51 and the upper plate 3 and locking plate 4, making the connection between them more stable. The center hole 52 is provided at the center of the mounting base 51. The setting of the center hole 52 increases the compression space of the mounting base 51, making it easier to install.

[0026] Before installation, the base plate 2 and anchoring steel bar 1 of the connecting component must first be fixed to the corresponding mounting groove 81 of the bridge body 8 by cement pouring. Then, the remaining parts of the connecting component are installed in accordance with the base plate 2. At this time, the corresponding end of the rubber band 5 can be connected to the connecting component. The specific steps are as follows: First, place the end of the rubber band 5 in the corresponding position between the upper plate 3 and the locking plate 4. Second, rotate the bolt 6 so that it moves upward relative to the threaded hole. The locking plate 4 moves upward synchronously under the action of the bolt 6. As it moves upward, its top surface gradually approaches and abuts against the bottom surface of the corresponding end of the rubber band 5. The upper end of the mounting seat 51 of the corresponding end of the rubber band 5 is embedded in the groove 31 of the upper plate 3 under the action of the locking plate 4. As the locking plate 4 continues to move upward, with the cooperation of the upper plate 3, the end of the rubber band 5 is finally squeezed and fixed between the upper plate 3 and the locking plate 4. When it is necessary to remove the rubber band 5, rotate the bolt 6 in the opposite direction to move it downward relative to the threaded hole, thereby causing the locking plate 4 to loosen its contact with the upper rubber band 5. The locking plate 4 moves downward with the bolt 6 until the distance between it and the upper plate 3 of the groove is greater than the thickness of the rubber band 5 mounting base 51. At this point, the corresponding end of the rubber band 5 can be removed from the connecting assembly.

[0027] This utility model features a simple replaceable bridge expansion joint structure. The use of bolts 6 and locking plates 4 makes the replacement of rubber strips 5 easier, more convenient, and faster. It reduces the tools required for installing and removing rubber strips 5 and improves the efficiency of installation and removal.

[0028] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A new replaceable bridge expansion joint, characterized in that, It includes a pair of connecting components set at the connection of the two bridge bodies (8), an installation groove (81) (31) is provided at the upper end of the external connection side of the bridge body (8), the connecting components are fixedly installed in the installation groove (81) of the corresponding side bridge body (8), a detachable sealed rubber strip (5) is provided between the two corresponding connecting components, and an anchoring steel bar (1) is provided on the outside of the connecting components. The connecting assembly includes an L-shaped base plate (2), with the outer end of the base plate (2) located in the mounting groove (81) of the bridge body (8) and the inner end extending outward to the external connection side of the bridge body (8). Anchor steel bars (1) are located on the outer side of the base plate (2), with their inner ends fixedly connected to the base plate (2). Above the crossbeam of the base plate (2), there is a corresponding groove plate (3) with its outer end fixedly connected to the upper end of the inner side of its vertical beam. A locking plate (4) that can move up and down is provided between the crossbeam and the groove plate (3). The end of the rubber band (5) is detachably fixedly installed between the locking plate (4) and the groove plate (3). A threaded hole is provided on the crossbeam of the base plate (2) corresponding to the gap of the bridge body (8), and a corresponding bolt (6) is provided in the threaded hole. The top of the bolt (6) abuts against the bottom surface of the locking plate (4). A guide assembly corresponding to the locking plate (4) is provided between the base plate (2) and the groove plate (3).

2. The novel replaceable bridge expansion joint as claimed in claim 1 wherein, The rubber strip (5) has an upwardly protruding mounting seat (51) at its end, and the bottom surface of the upper plate (3) has a groove (31) corresponding to the mounting seat (51) in the middle, and the upper end of the mounting seat (51) is embedded in the groove (31).

3. The novel replaceable bridge expansion joint according to claim 2, characterized in that, The bottom surface of the groove plate (3) on the outside of the groove (31) extends downward to form a bottom protrusion (32). The locking plate (4) is located between the bottom protrusion (32) and the top surface of the crossbeam of the base plate (2). The guide assembly includes a positioning pin (21) vertically arranged below the bottom protrusion (32). The locking plate (4) is provided with a positioning hole (22) corresponding to the positioning pin (21). The top end of the positioning pin (21) is fixedly connected to the bottom surface of the bottom protrusion (32), and its bottom end passes through the positioning hole (22) and is fixedly connected to the top surface of the crossbeam of the base plate (2). The positioning pin (21) and the positioning hole (22) are slidably connected.

4. The novel replaceable bridge expansion joint as claimed in claim 3 wherein, The outer side of the base plate (2) is provided with multiple anchoring steel bars (1), which are evenly arranged in the horizontal direction. The base plate (2) is provided with multiple threaded holes, and each threaded hole is provided with a corresponding bolt (6). Multiple positioning pins (21) are provided between the upper plate (3) and the base plate (2). Multiple positioning holes (22) corresponding to the positioning pins (21) are provided on the locking plate (4).

5. The novel replaceable bridge expansion joint as claimed in claim 1 wherein, The bolt (6) is provided with a corresponding limiting nut (7), which is located below the base plate (2).

6. The novel replaceable bridge expansion joint of claim 1, wherein, The mounting groove (81) is provided with corresponding water baffles (82) at both the front and rear ends.

7. The novel replaceable bridge expansion joint as claimed in claim 2, wherein, The upper and lower sides of the rubber belt (5) mounting base (51) are serrated, and a central hole (52) is provided at the center of the mounting base (51).

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