Bridge expansion joint cleaning-free rubber waterstop structure

By designing a buffer chamber, a stabilizing chamber, and a fixing strip at the bridge expansion joint, a cleaning-free rubber waterstop structure for bridge expansion joints is created. Utilizing EPDM rubber and reinforcing components, the problem of waste accumulation in the bridge expansion joint rubber waterstop structure is solved, achieving low maintenance costs and a long service life.

CN224148536UActive Publication Date: 2026-04-21SHENZHEN YUETONG CONSTR ENG CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHENZHEN YUETONG CONSTR ENG CO LTD
Filing Date
2025-03-17
Publication Date
2026-04-21

AI Technical Summary

Technical Problem

Existing bridge expansion joint rubber waterstop structures are prone to accumulating debris during use, resulting in high maintenance costs and difficult cleaning.

Method used

A bridge expansion joint cleaning-free rubber waterstop structure was designed, which adopts a combination of buffer chamber, stabilizing chamber and fixing strip, uses EPDM rubber material, and has internal reinforcing components and protective layer. It is fixed to the bridge by connectors to reduce the entry of garbage and improve durability.

Benefits of technology

It effectively prevents garbage from entering bridge expansion joints, reduces maintenance costs, extends service life, and reduces the frequency of cleaning.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of rubber waterstops, and discloses a bridge expansion joint cleaning-free rubber waterstop structure which comprises a rubber waterstop body, one end of the rubber waterstop body is provided with a surge bin, and the two sides of the surge bin are fixedly connected with connecting assemblies. A stabilizing bin is formed in the upper surface of one end of the rubber waterstop body, a plurality of reinforcing assemblies are arranged in the stabilizing bin, each reinforcing assembly comprises an elastic outer layer arranged in the stabilizing bin, and polyester fiber fabric and reinforcing steel wires are arranged in the elastic outer layers. According to the cleaning-free rubber waterstop structure for the bridge expansion joint, the buffering bin, the stabilizing bin and the fixing pressing strip are arranged, so that the effects of preventing water and reducing garbage falling into the bridge expansion joint are achieved, the situation that a lot of garbage falls into a groove, and consequently sanitation workers are difficult to clean is avoided, the maintenance cost is reduced, and the cleaning frequency is reduced.
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Description

Technical Field

[0001] This utility model relates to the field of rubber waterstop technology, and in particular to the structure of a cleaning-free rubber waterstop for bridge expansion joints. Background Technology

[0002] Bridge expansion joints are joints installed between the ends of two beams, between a beam end and an abutment, or at hinged joints of the bridge to accommodate bridge deck deformation. These joints must allow free expansion and contraction in both directions parallel and perpendicular to the bridge axis, be robust and reliable, and ensure a smooth ride for vehicles without bumps or noise. To prevent rainwater and debris from seeping into the expansion joints and affecting their functionality, rubber waterstops are used. Rubber waterstops and waterproof rubber are made primarily from natural rubber and various synthetic rubbers, mixed with various additives and fillers, and manufactured through processes such as plasticizing, mixing, calendering, and vulcanization.

[0003] In actual use, most existing bridge expansion joint rubber waterstop structures are "V" shaped, which creates grooves into which a lot of garbage falls, making it difficult for sanitation workers to clean and hindering the reduction of maintenance costs. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] The purpose of this utility model is to provide a bridge expansion joint cleaning-free rubber waterstop structure, so as to solve the problem mentioned in the background art that it is not convenient to reduce maintenance costs.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a bridge expansion joint cleaning-free rubber waterstop structure, comprising a rubber waterstop body, a buffer chamber at one end of the rubber waterstop body, connecting components fixedly connected to both sides of the buffer chamber, a stabilizing chamber on the upper surface of one end of the rubber waterstop body, and several sets of reinforcing components disposed inside the stabilizing chamber.

[0008] The reinforcement component includes an elastic outer layer disposed inside the stabilizing chamber, and the interior of the elastic outer layer is provided with polyester fiber fabric and reinforcing steel wire.

[0009] As a further embodiment of this utility model, the connecting component includes EPDM rubber layers that are fixedly connected to both sides of the buffer chamber. A flexible steel wire mesh is fixedly connected to the surface of the EPDM rubber layers. The flexible steel wire mesh can increase the overall strength and help improve the service life of the rubber waterstop body 1.

[0010] As a further embodiment of this utility model, a protective layer is fixedly connected to the top surface of the rubber waterstop body. The upper surface of the protective layer is arc-shaped, which facilitates the protection of the rubber waterstop body and reduces damage caused by external vehicles running over it.

[0011] As a further embodiment of this utility model, an anti-ultraviolet layer is fixedly connected to the surface of the protective layer. The anti-ultraviolet layer is made of polyethylene, which has good anti-ultraviolet and anti-aging properties and can maintain a stable waterproof effect for a long time.

[0012] As a further embodiment of this utility model, mounting holes are provided on both sides of the top surface of the rubber waterstop body, and the mounting holes are internally threaded with fixing components, which facilitate the fixing of the rubber waterstop body to the bridge plate.

[0013] As a further embodiment of this utility model, a fixing strip is fitted onto the surface of the fixing member. The fixing strip is made of rust-proof metal, and the fixing strip facilitates maintaining the flushness between the rubber waterstop body and the bridge.

[0014] As a further embodiment of this utility model, the material of the rubber waterstop body is EPDM rubber, which has excellent weather resistance, aging resistance, corrosion resistance and elasticity.

[0015] (III) Beneficial Effects

[0016] This utility model provides a cleaning-free rubber waterstop structure for bridge expansion joints, which has the following beneficial effects:

[0017] 1. This bridge expansion joint cleaning-free rubber waterstop structure, through the setting of buffer chambers, stabilizing chambers, and fixing strips, involves placing the rubber waterstop body between the bridge expansion joint steel sections. The rubber waterstop body and fixing strips are then connected to the bridge slab using fasteners, ensuring the rubber waterstop body is flush with the height of the two bridge expansion joint steel sections. The buffer chambers withstand the expansion and contraction deformation between the two bridge sections, while the stabilizing chambers reduce the direct impact of external pressure on the buffer chambers. Furthermore, because the rubber waterstop body is made of EPDM rubber, it possesses excellent resistance to high and low temperatures, ozone, ultraviolet rays, and aging. It also exhibits strong resistance to oxidation, ultraviolet rays, and acids and alkalis, thus achieving waterproofing and reducing the amount of garbage falling into the bridge expansion joint. This prevents a lot of garbage from falling into the grooves, making it difficult for sanitation workers to clean, thus helping to reduce maintenance costs and the frequency of cleaning.

[0018] 2. The bridge expansion joint cleaning-free rubber waterstop structure, through the setting of reinforcing components, fills the inside of the stabilizing chamber with an elastic outer layer, polyester fiber fabric, and reinforcing steel wires during use. The polyester fiber fabric has high strength and elastic recovery ability, making the woven fabric strong and durable. Placing it inside the elastic outer layer can increase the overall toughness and strength. At the same time, the reinforcing steel wire helps to maintain its shape, reduce the impact of external forces on the rubber waterstop body, avoid directly affecting the buffer chamber, and help to improve the service life of the rubber waterstop body. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the overall disassembled structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the reinforced component structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the connecting component structure of this utility model.

[0023] In the diagram: 1. Rubber waterstop body; 2. Buffer chamber; 3. Connecting component; 301. EPDM rubber layer; 302. Flexible steel wire mesh; 4. Stabilizing chamber; 5. Reinforcing component; 501. Elastic outer layer; 502. Polyester fiber fabric; 503. Reinforcing steel wire; 6. Protective layer; 7. UV-resistant layer; 8. Mounting hole; 9. Fastener; 10. Fixing strip. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0025] Please see Figures 1 to 4This utility model provides a technical solution: a bridge expansion joint cleaning-free rubber waterstop structure, including a rubber waterstop body 1, a buffer chamber 2 at one end of the rubber waterstop body 1, connecting components 3 fixedly connected to both sides of the buffer chamber 2, and a stabilizing chamber 4 on the upper surface of one end of the rubber waterstop body 1. Through the arrangement of the buffer chamber 2, the stabilizing chamber 4, and the fixing strip 10, in use, the rubber waterstop body 1 is placed between the steel sections of the bridge expansion joint, and the rubber waterstop body 1 and the fixing strip 10 are connected to the bridge plate using fasteners 9, allowing the rubber waterstop body 1 to connect with the two bridge expansion joint sections. The steel is flush with the ground. Buffer chamber 2 withstands the expansion and contraction deformation between the two bridge sections. Stabilizing chamber 4 reduces the direct impact of external pressure on buffer chamber 2. Furthermore, because the rubber waterstop body 1 is made of EPDM rubber, it has excellent resistance to high and low temperatures, ozone, ultraviolet rays, and aging. It also has strong resistance to oxidation, ultraviolet rays, and acids and alkalis, thus achieving waterproofing and reducing the amount of garbage falling into the bridge expansion joints. This prevents a lot of garbage from falling into the grooves, making it difficult for sanitation workers to clean, thus helping to reduce maintenance costs and cleaning frequency. The stabilizer chamber 4 has several sets of reinforcing components 5 inside.

[0026] The reinforcing component 5 includes an elastic outer layer 501 disposed inside the stabilizing chamber 4. The elastic outer layer 501 contains a polyester fiber fabric 502 and a reinforcing steel wire 503. With the reinforcing component 5, during use, the stabilizing chamber 4 is filled with the elastic outer layer 501, the polyester fiber fabric 502, and the reinforcing steel wire 503. The polyester fiber fabric 502 has high strength and elastic recovery ability, making the woven fabric strong and durable. Placing it inside the elastic outer layer 501 can increase the overall toughness and strength. At the same time, the reinforcing steel wire 503 helps to maintain its shape, reduce the impact of external forces on the rubber waterstop body 1, avoid directly affecting the buffer chamber 2, and help improve the service life of the rubber waterstop body 1.

[0027] The connecting component 3 includes EPDM rubber layers 301 that are fixedly connected to both sides of the buffer chamber 2. A flexible steel wire mesh 302 is fixedly connected to the surface of the EPDM rubber layers 301. The connecting component 3 increases the connectivity.

[0028] A protective layer 6 is fixedly connected to the top surface of the rubber waterstop body 1. The upper surface of the protective layer 6 is arc-shaped. The protective layer 6 protects the rubber waterstop body 1 and reduces damage caused by external vehicles running over it.

[0029] A UV-resistant layer 7 is fixedly connected to the surface of the protective layer 6. The UV-resistant layer 7 is made of polyethylene. The UV-resistant layer 7 serves to prevent UV radiation and increase the service life of the rubber waterstop body 1.

[0030] The rubber waterstop body 1 has mounting holes 8 on both sides of its top surface. The mounting holes 8 are threaded with fasteners 9. The fasteners 9 facilitate fixing the rubber waterstop body 1, reduce the gap between the bridge expansion joint and the rubber waterstop body 1, and achieve the effect of cleaning-free operation.

[0031] A fixing strip 10 is fitted onto the surface of the fastener 9. The fixing strip 10 is made of rust-proof metal. The fixing strip 10 serves to install the rubber waterstop body 1.

[0032] The rubber waterstop body 1 is made of EPDM rubber. Through the setting of the rubber waterstop body 1, it plays the role of connecting the bridge expansion joint and reducing the entry of dirt and water stains into the bridge expansion joint.

[0033] In this invention, the working steps of the device are as follows:

[0034] First step: When using it, place the rubber waterstop body 1 between the bridge expansion joint steel sections, and use the fastener 9 to connect the rubber waterstop body 1 and the fixing strip 10 to the bridge plate, so that the rubber waterstop body 1 is flush with the height of the two bridge expansion joint steel sections. The buffer chamber 2 bears the expansion and contraction deformation between the two bridges, and the stabilizing chamber 4 reduces the direct impact of external pressure on the buffer chamber 2. Since the rubber waterstop body 1 is made of EPDM rubber, it has excellent resistance to high and low temperatures, ozone, ultraviolet rays and aging, and also has strong resistance to oxidation, ultraviolet rays and acid and alkali.

[0035] The second step: When in use, the inside of the stabilizing chamber 4 is filled with an elastic outer layer 501, a polyester fiber fabric 502, and a reinforcing steel wire 503. The polyester fiber fabric 502 has high strength and elastic recovery ability, making the woven fabric strong and durable. Placing it inside the elastic outer layer 501 can increase the overall toughness and strength, while the reinforcing steel wire 503 helps to maintain its shape.

[0036] It should be noted that the device structure and accompanying drawings of this utility model mainly describe the principle of this utility model. In terms of the technical aspects of this design principle, the setting of the power mechanism, power supply system and control system of the device is not fully described. However, under the premise that those skilled in the art understand the principle of the above utility model, the specific details of its power mechanism, power supply system and control system can be clearly understood. The control method in the application document is automatic control through a controller. The control circuit of the controller can be implemented by those skilled in the art through simple programming.

[0037] All standard parts used can be purchased from the market, and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology, and the structure and principle of the components known to those skilled in the art can be known by those skilled in the art through technical manuals or conventional experimental methods.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. Bridge expansion joint clean-free rubber waterstop structure, comprising a rubber waterstop body (1), characterized in that: A buffer chamber (2) is provided at one end of the rubber waterstop body (1), and connecting components (3) are fixedly connected to both sides of the buffer chamber (2). A stabilizing chamber (4) is provided on the upper surface of one end of the rubber waterstop body (1), and several sets of reinforcing components (5) are provided inside the stabilizing chamber (4). The reinforcing component (5) includes an elastic outer layer (501) disposed inside the stabilizing chamber (4), and the elastic outer layer (501) is provided with polyester fiber fabric (502) and reinforcing steel wire (503).

2. The bridge joint maintenance free rubber waterstop strip structure according to claim 1, characterized in that: The connecting component (3) includes EPDM rubber layers (301) that are fixedly connected to both sides of the buffer chamber (2), and a flexible steel wire mesh (302) is fixedly connected to the surface of the EPDM rubber layers (301).

3. The bridge joint maintenance free rubber waterstop strip structure according to claim 1, characterized in that: The top surface of the rubber waterstop body (1) is fixedly connected to a protective layer (6), and the upper surface of the protective layer (6) is arc-shaped.

4. The bridge joint maintenance free rubber waterstop strip structure according to claim 3, characterized in that: The surface of the protective layer (6) is fixedly connected to an ultraviolet-proof layer (7), which is made of polyethylene.

5. The bridge joint maintenance free rubber waterstop strip structure of claim 1, wherein: The rubber waterstop body (1) has mounting holes (8) on both sides of its top surface, and the mounting holes (8) are threaded with fasteners (9).

6. The bridge joint maintenance free rubber gasket strip structure according to claim 5, wherein: The surface of the fastener (9) is fitted with a fixing strip (10), which is made of rust-proof metal.

7. The bridge joint maintenance free rubber waterstop strip structure of claim 1, wherein: The material of the rubber waterstop body (1) is EPDM rubber.