| Customization: | Available |
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| After-sales Service: | 3 Years |
| Warranty: | Installation Guide |
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Product Name
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Comb shaped telescopic device |
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Working Principle
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The working principle of the comb type expansion device is to enable the bridge to undergo free deformation with changes in temperature and load through the design and installation of comb plates. Specifically, the comb type expansion device consists of comb plates, steel elastic bodies, and other components. When the bridge undergoes expansion and contraction deformation due to temperature changes or vehicle loads, the comb plates can interlock or separate from each other to adapt to this deformation. The design of the comb plate makes its surface plate a comb shaped anti slip groove steel plate, which meshes with each other at the gap between the bridge deck plates extending from left and right. This supporting structure makes the expansion joint structure rigid and able to withstand large horizontal displacements. At the same time, components such as steel elastic bodies can also undergo elastic deformation at the expansion joints of bridges, further adapting to the deformation requirements of bridges |
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Product Structure
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The comb shaped expansion device is mainly composed of comb plates, anchor bolts, waterproof structures (such as waterstops or waterproof rubber strips), steel elastic bodies (some models have them), limit devices, anti-collision blocks, and sealing materials. Comb plate: Made of high-strength steel, shaped like a comb, arranged in a staggered manner, it can adapt to the expansion and contraction deformation of bridges under temperature changes, vehicle loads, and other effects. Anchor bolt: used to firmly fix the comb plate on the bridge beam, ensuring that the expansion joint will not loosen or shift during use. Waterproof structure: such as waterstops or waterproof rubber strips, set between or around the comb plates to provide waterproof sealing and prevent rainwater and other substances from seeping into the interior of the bridge structure. Steel elastic body (some models): It is one of the core components of expansion joints, which can produce elastic deformation at bridge expansion joints to adapt to temperature changes and vehicle loads of the bridge. Limiting device: used to ensure that the expansion joint is always in a reasonable position under the action of vehicle load, avoiding the obstruction of vehicle travel caused by the expansion joint being too wide or too narrow. Anti collision block: It can effectively prevent collisions and scratches caused by vehicle movement, extending the service life of the bridge. Sealing material: used to fill the gaps between comb plates, prevent moisture, dust, etc. from entering the gaps, and ensure the cleanliness and hygiene of the bridge deck. These components work together to enable the comb shaped expansion device to adapt to the expansion and contraction deformation of the bridge, while ensuring the smoothness of driving and the safety of the bridge structure. |
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Applications
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The comb shaped expansion device is mainly used in urban bridges and highway bridges. Urban bridges: suitable for bridges at small and medium-sized rivers and road intersections in cities. These bridges generally have relatively small spans, high traffic flow, and relatively stable vehicle speeds. The comb shaped expansion device has a simple structure, good vehicle driving comfort, and can adapt to the expansion and deformation needs of bridges. At the same time, it has a low cost and is suitable for budget limited projects such as county-level highway bridges. Highway bridges: Comb shaped expansion devices can be used for small and medium span bridges or bridge approach sections on highways. Due to its comb tooth structure, which provides good comfort for high-speed vehicles with minimal bumps during driving, and the relatively small amount of vehicle expansion and contraction deformation on these road sections compared to the main bridge, the comb tooth type expansion device can meet the requirements. In addition, the comb shaped expansion device can be widely used on both new and old bridges due to its excellent performance, such as automatic slag cleaning and dust prevention, superior waterproof and dustproof performance, and relatively low cost. It is particularly suitable for the replacement of large displacement rubber plate expansion devices on old bridges |
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Product parameter adjustment
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Production can be carried out according to the drawings, or customized processing can be carried out according to customer needs |
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Program Design
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Design separately according to different usage projects |
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