Bridge expansion joint protection device

Abstract

The utility model belongs to the technical field of bridge engineering, and particularly relates to a bridge expansion joint protection device which comprises a bridge body, two steel plates, two comb plates, a guide supporting assembly, a water stop belt, a cleaning protection assembly, an adjusting assembly, two strip-shaped plates and two mounting strips. A seam body is arranged on the bridge body, steel fiber concrete is fixedly installed at the positions, located on the bridge body, of the two sides of the seam body in an embedded mode, the two steel plates are fixedly installed in the corresponding steel fiber concrete correspondingly and are symmetrically arranged with the seam body as the center, and the two comb plates are hinged to the sides, close to each other, of the two steel plates correspondingly. The guide supporting assembly is arranged on the two comb plates, and the two strip-shaped plates are fixedly installed on the bottom sides of the corresponding steel plates correspondingly. The comb plate supporting device is reasonable in design, stable supporting of the comb plate can be guaranteed, the comb plate supporting device adapts to various deformation states of a bridge body, meanwhile, the water stop belt can be conveniently cleaned, maintained and maintained, the maintenance and replacement difficulty is greatly reduced, and the comb plate supporting device has high practical value.

Description

Technical Field

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

[0002] With the continuous development of transportation infrastructure construction, bridges, as an important part of transportation hubs, have received much attention for their safety and durability. Bridge expansion joints, as a key part of the bridge structure, play a vital role in the use of bridges. They need to adapt to the expansion and contraction deformation caused by various factors such as temperature changes, concrete shrinkage and creep, and vehicle loads. At the same time, they also need to have good waterproof and dustproof performance to protect the main structure of the bridge from external environmental erosion.

[0003] Traditional bridge expansion joint protection devices have revealed numerous problems in practical applications. Regarding structural stability, early expansion joint support structures often failed to effectively handle the complex displacement of the bridge structure on both sides of the joint. When the bridge experiences longitudinal and vertical displacement, ordinary support components struggle to ensure stable support of the comb plates, frequently leading to misalignment of the comb plates on both sides during vertical displacement. This severely impacts vehicle safety and increases the risk of traffic accidents.

[0004] Regarding the maintenance of waterstops, existing protective devices lack convenient and effective cleaning mechanisms. Waterstops are exposed to the external environment for extended periods, making them highly susceptible to clogging by debris. Traditional devices struggle to quickly and easily clean this debris, which not only affects the waterstop's normal water-stopping function but also accelerates its aging and damage, leading to frequent replacements, increased maintenance costs, and traffic control time, significantly disrupting traffic flow.

[0005] In view of the above-mentioned shortcomings, this utility model proposes a bridge expansion joint protection device.

[0006] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0007] The purpose of this utility model is to address the shortcomings mentioned in the background art and to propose a bridge expansion joint protection device.

[0008] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a bridge expansion joint protection device, comprising a bridge body, two steel plates, two comb plates, a guide support assembly, a waterstop, a cleaning and protection assembly, an adjustment assembly, two strip plates, and two mounting strips;

[0009] The bridge body is provided with a joint, and steel fiber reinforced concrete is embedded and fixedly installed on both sides of the joint on the bridge body. Two steel plates are fixedly installed in the corresponding steel fiber reinforced concrete and are arranged symmetrically with the joint as the center. Two comb plates are hinged and installed on the side of the two steel plates that are close to each other. The guide support assembly is set on the two comb plates. Two strip plates are fixedly installed on the bottom side of the corresponding steel plates. Two mounting strips are fixedly installed on the side of the two strip plates that are close to each other. The waterstop is detachably installed on the two mounting strips and is located directly below the two comb plates. Guide grooves are opened on both strip plates. The cleaning and protection assembly is set in the two guide grooves. The adjustment assembly is set in the two guide grooves and is adapted to the cleaning and protection assembly.

[0010] Preferably, the guide support assembly includes two fixed rods and multiple guide openings. Fixed rods are fixedly installed on both comb plates at positions away from the corresponding side steel plates. Multiple guide openings are provided on both comb plates, and the two fixed rods are in movable contact with the inner walls of the corresponding multiple guide openings.

[0011] Preferably, the cleaning and protection assembly includes two cleaning scrapers and two sliders. Sliders are slidably installed in both guide grooves, and cleaning scrapers are fixedly installed on the side of the two sliders that are close to each other. Both cleaning scrapers are in active contact with the top side of the waterstop.

[0012] Preferably, the adjustment assembly includes two lead screws and two adjusting wheels. Lead screws are rotatably installed in two guide grooves. The two lead screws are threadedly connected to the corresponding sliders. The front ends of the two lead screws extend to the front side of the strip plate and are respectively fixedly fitted with adjusting wheels.

[0013] Preferably, the two guide grooves are both inclined downwards on the side that is close to each other.

[0014] Preferably, the two mounting strips are provided with snap-fit ​​grooves on the sides that are close to each other, and the two sides of the waterstop are snap-fitted into the corresponding snap-fit ​​grooves respectively.

[0015] Preferably, the waterstop is configured to be higher in the middle and lower on both sides.

[0016] Preferably, the cleaning scraper is made of silicone rubber.

[0017] Preferably, the cleaning scraper is embedded with a reinforcing steel strip, which is semi-rigid.

[0018] Preferably, the spacing between adjacent comb teeth on the comb plate is greater than the width of the comb teeth.

[0019] The beneficial effects of this utility model are:

[0020] The guide support components ensure stable support for the comb plates and adapt well to longitudinal and vertical displacements between the bridge bodies on both sides of the joint. They also prevent misalignment between the comb plates on both sides during vertical displacement, which could affect vehicle safety. Furthermore, the cleaning and adjustment components allow for quick and convenient cleaning of debris from the waterstop when maintenance is required, greatly preventing debris from clogging the gaps and affecting the normal use of the waterstop.

[0021] Because the cleaning scraper is made of silicone rubber and has embedded and fixed reinforcing steel bars in a semi-rigid configuration, the cleaning scraper can maintain a basic cleaning shape while having good toughness. This allows it to adapt well to the interference between two cleaning scrapers by bending itself, thus greatly improving the service life of the cleaning scraper. In addition, the waterstop is easy to disassemble and assemble, greatly reducing the difficulty of maintenance and replacement.

[0022] By setting the spacing between adjacent comb teeth on the comb plate to be greater than the width of the comb teeth, it can effectively accommodate the small-range lateral displacement between the bridge bodies on both sides of the seam, and avoid excessive compression between the comb plates and damage caused by lateral displacement on both sides of the seam body in the bridge body. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a three-dimensional structural diagram of a bridge expansion joint protection device proposed in this utility model.

[0025] Figure 2 for Figure 1 A partial structural diagram;

[0026] Figure 3 for Figure 2 A schematic diagram of the cross-sectional structure;

[0027] Figure 4 for Figure 3 Front view structural diagram;

[0028] Figure 5 This is a schematic diagram of the structure of the steel plate, fixing rod, guide opening and comb plate parts proposed in this utility model;

[0029] Figure 6This is a structural schematic diagram of the waterstop, cleaning and protection components, adjustment components, strip plate, mounting strip, and guide groove portion proposed in this utility model;

[0030] Figure 7 This is a schematic diagram of the structure of the cleaning scraper, slider, and reinforcing steel strip proposed in this utility model.

[0031] In the diagram: 1. Bridge body; 11. Steel fiber reinforced concrete; 2. Steel plate; 21. Comb plate; 22. Fixing rod; 23. Guide opening; 3. Waterstop; 31. Strip plate; 32. Installation strip; 4. Cleaning scraper; 401. Reinforcing steel strip; 41. Sliding block; 5. Lead screw; 51. Adjusting wheel. Detailed Implementation

[0032] The technical solution of this utility model will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0033] Reference Figure 1-7 A bridge expansion joint protection device includes a bridge body 1, two steel plates 2, two comb plates 21, a waterstop 3, two strip plates 31, and two mounting strips 32. A joint body is provided on the bridge body 1. Steel fiber reinforced concrete 11 is embedded and fixedly installed on both sides of the joint body on the bridge body 1. The two steel plates 2 are respectively fixedly installed in the corresponding steel fiber reinforced concrete 11 and are arranged symmetrically with the joint body as the center. The two comb plates 21 are respectively hinged and installed on the side of the two steel plates 2 that are close to each other. In order to better adapt to the small range of lateral displacement between the two sides of the bridge body 1 and avoid excessive compression between the comb plates 21 when lateral displacement occurs on both sides of the joint body in the bridge body 1, which would cause damage, the spacing between adjacent comb teeth on the comb plate 21 is greater than the width of the comb teeth. The width of the gap is set according to the actual situation, but the width of the gap should not be greater than the width of the comb teeth.

[0034] Two comb plates 21 are fixedly mounted with fixing rods 22 at positions away from the corresponding side steel plate 2. Multiple guide holes 23 are opened on both comb plates 21. The two fixing rods 22 are in active contact with the inner walls of the corresponding multiple guide holes 23. This can ensure the stable support of the comb plates 21 and adapt well to the movement state when there is longitudinal and vertical displacement between the bridge bodies 1 on both sides of the joint. At the same time, it can also avoid the situation where the comb plates 21 on both sides are misaligned when vertical displacement occurs, which would affect the driving safety of the vehicle. In addition, in order to avoid the impact of the corners of the two comb plates on driving safety when they enter the tilted state when vertical displacement occurs between the bridge bodies on both sides of the joint, the sides of the comb plates and the side of the steel plate close to the comb plates are rounded.

[0035] Two strip plates 31 are fixedly installed on the bottom side of the corresponding steel plate 2, and two mounting strips 32 are fixedly installed on the side of the two strip plates 31 that are close to each other. The waterstop 3 is detachably installed on the two mounting strips 32 and located directly below the two comb plates 21. That is, the two mounting strips 32 are provided with snap-fit ​​grooves on the side that are close to each other. The two sides of the waterstop 3 are snap-fitted into the corresponding snap-fit ​​grooves, which facilitates the installation, disassembly and replacement of the waterstop 3.

[0036] Both strip plates 31 are provided with guide grooves, and sliders 41 are slidably installed in both guide grooves. Cleaning scrapers 4 are fixedly installed on the side of the two sliders 41 that are close to each other. Both cleaning scrapers 4 are in contact with the top side of the waterstop 3, and can clean the debris on the waterstop 3 when the cleaning scrapers 4 move along the guide grooves. Both guide grooves are rotatably installed with lead screws 5, and the two lead screws 5 are respectively threaded to the corresponding sliders 41. The front ends of the two lead screws 5 extend to the front side of the strip plate 31 and are respectively fixedly fitted with adjusting wheels 51, so as to control the sliders 41 to drive the cleaning scrapers 4 to perform cleaning operations along the top side of the waterstop 3. In order to avoid the accumulation of debris and water in the guide grooves and affect the normal operation of the lead screws 5, the side of the two guide grooves that are close to each other is set in a downward inclination.

[0037] In this embodiment, in order to greatly reduce the phenomenon of water accumulation on the waterstop 3, the waterstop 3 is set to be high in the middle and low on the front and back sides.

[0038] In this embodiment, in order to enable the cleaning scraper 4 to maintain a basic cleaning form and have good toughness, so as to be able to adapt well to the two cleaning scrapers 4 to resolve the motion interference by bending itself when they interfere with each other, the cleaning scraper 4 is made of silicone rubber with good weather resistance. A reinforcing steel strip 401 is embedded in the cleaning scraper 4, and the reinforcing steel strip 401 is semi-rigid.

[0039] Working principle: When in use, the device is first installed at the expansion joint of the bridge. The steel plate 2 is fixed to the bridge body 1 by steel fiber reinforced concrete 11, so that the comb plate 21 can rotate based on the steel plate 2. When the bridge undergoes expansion and contraction deformation, the comb plate 21 can move accordingly with the deformation of the bridge body 1. At the same time, the cooperation between the fixing rod 22 and the guide port 23 can ensure the stable support of the comb plate 21 and avoid misalignment between the two comb plates 21 when vertical displacement occurs, which would affect the driving safety of vehicles.

[0040] When maintenance of the waterstop 3 is required, the adjusting wheel 51 can be rotated to drive the lead screw 5 to rotate. Since the lead screw 5 is threadedly connected to the slider 41, the rotation of the lead screw 5 can drive the slider 41 to slide in the guide groove, thereby driving the cleaning scraper 4 to clean along the top side of the waterstop 3, removing debris from the waterstop 3, and preventing debris from clogging the gaps of the waterstop 3 and affecting the normal use of the waterstop 3.

[0041] Furthermore, since the cleaning scraper 4 is made of silicone rubber and has a semi-rigid reinforcing steel strip 401 embedded and fixed, the cleaning scraper 4 can maintain a basic cleaning shape while also having good toughness. This allows it to adapt well to the interference between the two cleaning scrapers 4 when they move, by bending itself to resolve the interference. This greatly improves the service life of the cleaning scraper 4. At the same time, the waterstop 3 is easy to disassemble and assemble, greatly reducing the difficulty of maintenance and replacement.

[0042] The above provides a detailed description of a bridge expansion joint protection device provided by this utility model. Specific embodiments have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A bridge joint protector characterized by, The bridge body (1) is provided with a slit body, steel fiber concrete (11) is fixedly installed on the bridge body (1) on both sides of the slit body, two steel plates (2) are fixedly installed in the corresponding steel fiber concrete (11) and are symmetrically arranged based on the center of the slit body, two comb tooth plates (21) are hingedly installed on the side of the two steel plates (2) close to each other, a guide support assembly is arranged on the two comb tooth plates (21), two strip-shaped plates (31) are fixedly installed on the bottom side of the corresponding steel plate (2), two mounting strips (32) are fixedly installed on the side of the two strip-shaped plates (31) close to each other, a water stop belt (3) is detachably installed on the two mounting strips (32) and located directly below the two comb tooth plates (21), guide grooves are formed in the two strip-shaped plates (31), a cleaning protection assembly is arranged in the two guide grooves, and an adjusting assembly is arranged in the two guide grooves and matched with the cleaning protection assembly. The guide support assembly includes two fixed rods (22) and a plurality of guide ports (23), the fixed rod (22) is fixedly installed on the position of the two comb tooth plates (21) away from the corresponding side steel plate (2), a plurality of guide ports (23) are formed in the two comb tooth plates (21), and the two fixed rods (22) are in movable contact with the inner walls of the corresponding plurality of guide ports (23).

2. A bridge joint protection device according to claim 1, characterised in that: The cleaning protection assembly includes two cleaning scrapers (4) and two sliding blocks (41), the sliding block (41) is slidingly installed in the two guide grooves, the cleaning scraper (4) is fixedly installed on the side of the two sliding blocks (41) close to each other, and the two cleaning scrapers (4) are in movable contact with the top side of the water stop belt (3).

3. A bridge joint protection device according to claim 1, characterized in that: The adjusting assembly includes two lead screws (5) and two adjusting wheels (51), the lead screw (5) is rotatably installed in the two guide grooves, the lead screw (5) is in threaded connection with the corresponding sliding block (41), and the front end of the lead screw (5) extends to the front side of the strip-shaped plate (31) and is fixedly sleeved with the adjusting wheel (51).

4. A bridge joint protection device according to claim 3, characterised in that: The side of the two guide grooves close to each other is arranged in a downward inclined manner.

5. A bridge joint protector according to claim 1, wherein: The side of the two mounting strips (32) close to each other is provided with a clamping groove, and the two sides of the water stop belt (3) are clamped and installed in the corresponding clamping grooves.

6. A bridge joint protector according to claim 1, wherein: The water stop belt (3) is arranged in a state that the middle is high and the front and back sides are low.

7. A bridge joint protector according to claim 1, wherein: The material of the cleaning scraper (4) is silicone rubber.

8. A bridge joint protector according to claim 3, wherein: The reinforcing steel bar (401) is embeddedly arranged on the cleaning scraper (4), and the reinforcing steel bar (401) is arranged in a semi-rigid manner.

9. A bridge joint protector according to claim 3, wherein: The distance between the adjacent comb teeth on the comb tooth plate (21) is greater than the width of the comb tooth.

10. A bridge joint protector according to claim 1, wherein: ​

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