Double-slot-type comb plate expansion and contraction joint

Abstract

The invention discloses a double-slot-type comb plate expansion and contraction joint. The joint comprises a central movable comb plate, two fixed comb plates, a sliding middle beam and a hinge; the central movable comb plate is arranged above a beam joint gap, the two fixed comb plates are arranged at the two sides of the central movable comb plate and fixedly connected with bridge bodies at thetwo sides of the beam joint gap respectively, the sliding middle beam and the hinge are arranged below the central movable comb plate, the two ends of the sliding middle beam are slidingly connected with the two bridge bodies respectively, the two ends of the hinge are connected with the two bridge bodies through hinge rotating shafts respectively, and the central movable comb plate is connected with the sliding middle beam and the hinge separately. The expansion and contraction distance of the comb plates is effectively reduced, the joint transmission of the two bridge bodies is more stable,and the driving safety is improved.

Description

technical field [0001] The invention relates to the technical field of bridges, in particular to a double-slit comb-tooth plate expansion joint. Background technique [0002] Existing bridge expansion joints include comb-tooth plate expansion joints and modular expansion joints. Modular expansion joints have a relatively large amount of expansion. Although the tooth plate expansion joint is better than the modular expansion joint in terms of continuity, the comb plate is not suitable for making it too long, otherwise it may puncture the car tires and endanger driving safety. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a double-slit comb-tooth plate expansion joint, which can effectively reduce the expansion distance of the comb-tooth plate and make the gap between the two bridge girders transition It is more stable and improves driving safety. [0004] The technical scheme that the present invention adopts ...

AI Technical Summary

Problems solved by technology

[0002] Existing bridge expansion joints include comb-tooth plate expansion joints and modular expansion joints. Modular expansion joints have a large amount of expansion, but because there is still a gap between each piece of steel, it will still bump when driving. Although the tooth plate expansion joint is better than the modular expansion joint in terms of continuity, the comb plate is not suitable for making too long, otherwise it may puncture the car tires and endanger driving safety

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