Bridge dustproof telescopic device

Abstract

The invention discloses a bridge dustproof telescopic device which comprises comb plates oppositely arranged on the two sides of an expansion joint, the tooth parts of the two comb plates are arrangedin a staggered mode, the tooth parts of the comb plates are located above the expansion joint, and the comb plates are provided with water intercepting grooves for preventing silt from entering the tooth parts of the comb plates. The beneficial effects of the invention are that the comb plates are provided with water intercepting grooves, most of rainwater and silt on the bridge floor are drainedout of the bridge along the water intercepting grooves, so that the dustproof effect is achieved, a small amount of silt and dust fall into the U-shaped drainage grooves through the gaps between thetooth parts and are washed away by rainwater, and therefore the silt is prevented from blocking the expansion joint, and the long-term effectiveness of the expansion function of the bridge is guaranteed. The cleaning pipe is arranged, the cleaning pipe can clean the U-shaped drainage groove regularly, and the use reliability of the U-shaped drainage groove is guaranteed; the comb plate adopts a screw-free design, so that bolts are prevented from loosening and breaking, the inspection times and inspection requirements of the bridge expansion joint are reduced, and the operation cost of the expansion joint is reduced.

Description

technical field [0001] The invention relates to a bridge expansion joint, in particular to a bridge dust-proof expansion device. Background technique [0002] In order to meet the deformation requirements of the bridge deck, expansion joints are usually set between the two girder ends, between the girder end and the abutment, or at the hinge position of the bridge. It is required that the expansion joints can freely expand and contract in two directions parallel to and perpendicular to the bridge axis, and are firm and reliable. The vehicles should run smoothly without sudden jumps and noises; they should be able to prevent rainwater and garbage from infiltrating and blocking; installation, inspection, and maintenance , Elimination of dirt should be simple and convenient. [0003] The existing comb plate expansion joints have the following main problems: 1. The expansion joints are blocked by sand, the expansion and contraction function is limited, and it is difficult to cl...

AI Technical Summary

Problems solved by technology

[0003] The existing comb plate expansion joints have the following main problems: 1. The expansion joints are blocked by sand, the expansion and contraction function is limited, and it is difficult to clean; 2. The nut is loose, and the screw is corroded and broken; 3. The comb plate is corroded and deformed, which is To ensure the long-term effective operation of the comb plate expansion joint, it is necessary to arrange personnel to clean up the sediment and inspect the screw, etc., resulting in a lot of waste of manpower and material resources, and increasing the operating cost of the comb plate expansion joint

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