Reinforced bolt-free comb plate bridge expansion device

Abstract

The utility model discloses a reinforced bolt-free comb plate bridge expansion device which comprises bridge bodies, a mounting seam is arranged between the two bridge bodies, the top of the mounting seam is fixedly connected with a comb plate body, and the two sides of the comb plate body are fixedly connected with steel bars. A dustproof net and a waterproof plate are arranged on the mounting seam, a water retention groove and a first drainage hole are formed in the waterproof plate, a second drainage hole and a flow guide groove are formed in the bridge body, a shock pad, a supporting plate and a top plate are fixedly connected to the bottom of the waterproof plate, and a spring is arranged in the supporting plate; and a sealing strip and a base are arranged at the bottom of the mounting seam. By means of the device, dust and moisture are effectively prevented from invading through cooperation of the dustproof net, the waterproof plate, the damping pad and the spring, rainwater and dust can be smoothly discharged through the design of the water retention groove and the drainage hole in the waterproof plate, vibration generated by vehicle pressure is absorbed, and damage to the structure is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge expansion joints, in particular to a reinforced bolt-free comb plate bridge expansion device. Background Art

[0002] During bridge construction and maintenance, expansion joints are important components that connect and adjust different parts of a bridge. Their main function is to allow the bridge to expand and contract as necessary under temperature changes and traffic loads in order to maintain the stability and safety of the structure.

[0003] Existing bridge expansion joint technology mostly uses bolts for connection, but this method not only increases the complexity of installation and maintenance, but also may cause the bolts to loosen. For example, a Chinese patent discloses a "reinforced boltless comb plate bridge expansion device" with an application number of "CN202121539650.5". It uses direct welding of anchor plates and steel bars and the setting of steel sections to enhance the strength of bridge expansion joints. The steel sections can also prevent concrete from entering the gap at the end of the beam during pouring. The first waterproof rubber belt can have a waterproof effect, but its rubber belt may cause leakage due to aging or improper installation, and thus cannot effectively protect the internal structure for a long time. When water stains enter the interior, they cannot be discharged in time and will remain inside the device, affecting safety. Utility Model Content

[0004] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art, and to provide a reinforced boltless comb plate bridge expansion and contraction device. The dustproof net and the waterproof plate are arranged to effectively prevent the intrusion of dust and moisture, thereby protecting the internal structure of the device. The water retention trough and the first drainage hole effectively manage the moisture and prevent the influence of accumulated water on the device. The water is drained to the guide grooves on both sides and then to the second drainage hole again, so as not to pass through the bottom device, thereby reducing the erosion of the bridge structure by moisture. The combination of the shock-absorbing pad, the support plate and the spring system, the vibration generated by the vehicle pressure on the comb plate body is absorbed by the shock-absorbing pad at the bottom, and part of the force is not absorbed in time and is transmitted to the support plate. Due to the action of the internal spring and damper, the vibration generated when the vehicle passes by is effectively absorbed and reduced, thereby improving the adaptability and stability of the device, effectively improving the functionality and durability of the bridge expansion and contraction device, and ensuring the long-term safe use of the bridge.

[0005] The present utility model also provides a reinforced boltless comb-tooth plate bridge expansion device having the above, including: a bridge body, an installation joint is provided between the two bridge bodies, a comb-tooth plate body is fixedly connected to the top of the installation joint, and steel bars are fixedly connected to both sides of the comb-tooth plate body; a dust-proof net and a waterproof plate are provided on the installation joint, a water retention groove and a first drain hole are provided on the waterproof plate, a second drain hole and a diversion groove are provided on the bridge body, shock-absorbing pads, support plates and top plates are fixedly connected to the bottom of the waterproof plate, springs are provided inside the support plates, and a sealing strip and a base are provided at the bottom of the installation joint. Through the above devices, through the cooperation of the dust-proof net, waterproof plate, shock-absorbing pads and springs, the intrusion of dust and moisture is effectively prevented. The design of the water retention groove and drain holes on the waterproof plate helps the smooth discharge of rainwater and dust, absorbs the vibration generated by vehicle pressure, and reduces the damage to the structure.

[0006] According to the reinforced boltless comb-tooth plate bridge expansion device of the present utility model, placing grooves are provided on both sides of the installation joint, and both ends of the comb-tooth plate body are fixedly connected to the placing grooves. Through the above devices, through the placing grooves, the stable installation of the comb-tooth plate body is ensured, the displacement of the plate body during use is prevented, and the overall stability and durability of the device are improved.

[0007] According to the reinforced boltless comb-tooth plate bridge expansion device of the present utility model, the dust-proof net is attached to the lower surface of the comb-tooth plate body, and the dust-proof net crosses the installation joint. Through the above devices, large particulate matter is effectively blocked from entering the bottom by the dust-proof net, thereby protecting the waterproof plate and other internal components and extending the service life of the device.

[0008] According to the reinforced boltless comb-tooth plate bridge expansion device of the present utility model, the waterproof plate is attached to the lower surface of the dust-proof net, and both sides of the waterproof plate are embedded inside the bridge body. Through the above devices, by closely fitting the waterproof plate and the dust-proof net, dust and moisture are prevented from entering the bridge structure through the gaps, thereby keeping the device dry and clean.

[0009] According to the reinforced boltless comb-tooth plate bridge expansion device of the present utility model, the water retention groove is located at the top of the waterproof plate, the water retention groove is connected to the first drain hole, and the first drain hole penetrates through the inside of the waterproof plate. Through the above devices, rainwater and dust can be effectively accumulated through the water retention groove and discharged through the first drain hole, reducing the erosion and water accumulation problems inside the device.

[0010] According to the enhanced boltless comb tooth plate bridge expansion device of the present utility model, the other end of the first drainage hole is attached to the diversion groove, the bottom of the diversion groove is communicated with the second drainage hole, and the second drainage hole penetrates through the inside of the bridge body. Through the above device, through the first drainage hole, the diversion groove, and the second drainage hole, it is ensured that rainwater and dust can be smoothly discharged outside the bridge body, preventing the accumulation of water stains and reducing potential damage to the bridge structure.

[0011] According to the enhanced boltless comb tooth plate bridge expansion device of the present utility model, the shock pad is attached to the lower surface of the waterproof plate, and the shock pad is attached to the upper surface of the top plate. Through the above device, the shock generated by vehicle pressure is absorbed by the shock pad, protecting the structural stability of the device, reducing the impact of vibration on other components, and improving comfort and safety.

[0012] According to the enhanced boltless comb tooth plate bridge expansion device of the present utility model, an installation groove is provided inside the support plate, the top plate is slidably connected inside the installation groove, the spring is located inside the installation groove, a damper is provided inside the spring, and the spring is connected to the top plate. Through the above device, the combination of the spring and the damper effectively absorbs and reduces the vibration when the vehicle passes, improving the adaptability and stability of the device. The sliding connection of the top plate ensures that the device can work smoothly during the expansion and contraction process.

[0013] Beneficial effects

[0014] Compared with the prior art, for the enhanced boltless comb tooth plate bridge expansion device, the dust-proof net and the waterproof plate effectively prevent the intrusion of dust and moisture, thereby protecting the internal structure of the device. The water retention groove and the first drainage hole effectively manage the moisture, preventing the influence of water accumulation on the device, draining the water to the diversion grooves on both sides and then to the second drainage hole, so that it does not pass through the device at the bottom, reducing the erosion of moisture on the bridge structure. The combination of the shock pad, the support plate and the spring system, the vibration generated by vehicle pressure on the comb tooth plate body is absorbed by the shock pad at the bottom. Some of the force that is not absorbed in time is transmitted to the support plate. Due to the action of the internal spring and damper, the vibration generated when the vehicle passes is effectively absorbed and reduced, improving the adaptability and stability of the device, effectively enhancing the functionality and durability of the bridge expansion device, and ensuring the long-term safe use of the bridge. Brief description of the drawings

[0015] The following further describes the present utility model in conjunction with the drawings and embodiments;

[0016] Figure 1 It is the front view of the enhanced boltless comb tooth plate bridge expansion device of the present utility model;

[0017] Figure 2 It is for the enhanced boltless comb tooth plate bridge expansion device of the present utility modelFigure 1 Internal structure diagram;

[0018] Figure 3 In the enhanced boltless comb tooth plate bridge expansion device of the present utility model Figure 1 Enlarged view of location A;

[0019] Figure 4 In the enhanced boltless comb tooth plate bridge expansion device of the present utility model Figure 2 Enlarged view of location B.

[0020] Legend description:

[0021] 1. Bridge body; 2. Installation joint; 3. Comb tooth plate body; 4. Steel bars; 5. Dust-proof net; 6. Waterproof plate; 7. Water retention groove; 8. First drainage hole; 9. Second drainage hole; 10. Diversion groove; 11. Shock pad; 12. Support plate; 13. Spring; 14. Damper; 15. Top plate; 16. Installation groove; 17. Sealing strip; 18. Base. Specific implementation manners

[0022] This part will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the drawings. The function of the drawings is to supplement the description of the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but it should not be construed as a limitation on the protection scope of the present utility model.

[0023] Referring to Figures 1-4 , in the embodiment of the enhanced boltless comb tooth plate bridge expansion device of the present utility model, it includes: a bridge body 1. An installation joint 2 is provided between two bridge bodies 1. The installation joint 2 connects the two bridge bodies 1. A comb tooth plate body 3 is fixedly connected to the top of the installation joint 2. The comb tooth plate body 3 provides the sliding and supporting capabilities between the bridge bodies through the comb tooth structure and bears the traffic load. Placement grooves are provided on both sides of the installation joint 2. Both ends of the comb tooth plate body 3 are fixedly connected to the placement grooves. Steel bars 4 are fixedly connected to both sides of the comb tooth plate body 3. The steel bars 4 provide additional support and stability.

[0024] A dust-proof net 5 and a waterproof plate 6 are provided on the installation joint 2. The dust-proof net 5 blocks large particles and dust, protecting the internal devices from damage. The waterproof plate 6 prevents moisture from penetrating into the device interior and is embedded in the bridge body 1 to enhance the sealing performance. The dust-proof net 5 is attached to the lower surface of the comb-tooth plate body 3, crosses the installation joint 2, and the waterproof plate 6 is attached to the lower surface of the dust-proof net 5. Both sides of the waterproof plate 6 are embedded in the bridge body 1. The waterproof plate 6 is provided with a water retention groove 7 and a first drainage hole 8. The water retention groove 7 collects rainwater and dust, and the first drainage hole 8 ensures that the accumulated water can smoothly flow to the diversion groove 10. The water retention groove 7 is located at the top of the waterproof plate 6 and is connected to the first drainage hole 8. The first drainage hole 8 penetrates through the interior of the waterproof plate 6. The bridge body 1 is provided with a second drainage hole 9 and a diversion groove 10. The second drainage hole 9 ensures that the accumulated water can be discharged outside the bridge structure, and the diversion groove 10 ensures that the moisture can smoothly drain into the second drainage hole 9. The other end of the first drainage hole 8 is attached to the diversion groove 10, and the bottom of the diversion groove 10 is communicated with the second drainage hole 9. The second drainage hole 9 penetrates through the interior of the bridge body 1. The bottom of the waterproof plate 6 is fixedly connected with a shock pad 11, a support plate 12 and a top plate 15. The shock pad 11 absorbs the vibrations generated by the vehicle flow, protecting the device structure from the influence of vibrations. The shock pad 11 is attached to the lower surface of the waterproof plate 6 and the upper surface of the top plate 15. The support plate 12 is internally provided with a spring 13 which provides elastic support and absorbs and alleviates the vibrations brought by the vehicle flow. The support plate 12 is internally provided with an installation groove 16, and the top plate 15 is slidably connected inside the installation groove 16. The spring 13 is located inside the installation groove 16, and a damper 14 is arranged inside the spring 13. The spring 13 is connected to the top plate 15. A sealing strip 17 and a base 18 are provided at the bottom of the installation joint 2.

[0025] Working principle: During use, when a vehicle passes over the bridge, the comb-tooth plate body 3 bears the vehicle flow load. Through the dust-proof net 5 above it, larger particles are blocked from entering the installation joint 2, thus protecting the internal components. Since the dust carried by the vehicle flow and the rainwater during rainy days will enter the bottom, the dust-proof net 5 and the waterproof plate 6 cooperate closely. The water retention groove 7 on the waterproof plate 6 collects rainwater and dust, and the rainwater carrying dust flows into the diversion groove 10 through the first drainage hole 8 and is finally discharged through the second drainage hole 9, preventing the accumulated water from damaging the bottom devices. The vibrations brought by the vehicle flow are absorbed by the shock pad 11, and the vibrations not fully absorbed are further alleviated by the spring 13 and the damper 14, ensuring the stable operation of the top plate 15. The settings of the sealing strip 17 and the base 18 ensure the sealing performance of the installation joint 2, preventing external dust and moisture from entering and maintaining the long-term stability and effectiveness of the device.

[0026] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Various changes can be made without departing from the spirit of the present utility model within the knowledge scope of those of ordinary skill in the art.

Claims

1. Strengthened boltless comb plate bridge expansion device, characterized in that: include: A bridge body (1), wherein an installation seam (2) is provided between two bridge bodies (1), a comb plate body (3) is fixedly connected to the top of the installation seam (2), and steel bars (4) are fixedly connected to both sides of the comb plate body (3); The installation seam (2) is provided with a dustproof net (5) and a waterproof plate (6), the waterproof plate (6) is provided with a water retention groove (7) and a first drainage hole (8), the bridge body (1) is provided with a second drainage hole (9) and a guide groove (10), the bottom of the waterproof plate (6) is fixedly connected with a shock-absorbing pad (11), a support plate (12) and a top plate (15), a spring (13) is provided inside the support plate (12), and a sealing strip (17) and a base (18) are provided at the bottom of the installation seam (2).

2. The reinforced boltless comb plate bridge expansion device according to claim 1 is characterized in that: Placement grooves are provided on both sides of the installation seam (2), and both ends of the comb plate body (3) are fixedly connected to the placement grooves.

3. The reinforced boltless comb plate bridge expansion device according to claim 1 is characterized in that: The dustproof net (5) is fitted with the lower surface of the comb plate body (3), and the dustproof net (5) crosses the installation seam (2).

4. The reinforced boltless comb plate bridge expansion device according to claim 1 is characterized in that: The waterproof board (6) is fitted to the lower surface of the dustproof net (5), and both sides of the waterproof board (6) are embedded in the interior of the bridge body (1).

5. The reinforced boltless comb plate bridge expansion device according to claim 1 is characterized in that: The water retention groove (7) is located at the top of the waterproof plate (6), and the water retention groove (7) is connected to the first drainage hole (8), and the first drainage hole (8) passes through the interior of the waterproof plate (6).

6. The reinforced boltless comb plate bridge expansion device according to claim 1 is characterized in that: The other end of the first drainage hole (8) is in contact with the guide groove (10), the bottom of the guide groove (10) is connected to the second drainage hole (9), and the second drainage hole (9) runs through the interior of the bridge body (1).

7. The reinforced boltless comb plate bridge expansion device according to claim 1 is characterized in that: The shock-absorbing pad (11) is in contact with the lower surface of the waterproof plate (6), and the shock-absorbing pad (11) is in contact with the upper surface of the top plate (15).

8. The reinforced boltless comb plate bridge expansion device according to claim 1 is characterized in that: The support plate (12) is provided with a mounting groove (16), the top plate (15) is slidably connected inside the mounting groove (16), the spring (13) is located inside the mounting groove (16), a damper (14) is provided inside the spring (13), and the spring (13) is connected to the top plate (15).

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