Patent ID: 7484259

Claim:
A large resisting distortion and modularized comb-type bridge expansion joint comprising: at least two modules located in parallel in the direction of a bridge's width; each said module including a fixed comb plate ( 2 ) and a movable comb plate ( 1 ), which are respectively disposed on girders located at the two sides of the bridge expansion joint, said movable comb plate ( 1 ) crosses over the bridge expansion joint; both of said fixed comb plate ( 2 ) and said movable comb plate ( 1 ) having a plurality of comb teeth ( 22 ), ( 11 ) at their opposite ends, and the comb teeth ( 11 ) of said movable comb plate ( 1 ) interdigitate with the comb teeth ( 22 ) of said fixed comb plate ( 2 ); wherein the root of said movable comb plate ( 1 ) rotatablely jointing with a seat ( 5 ) fixed on the girder; the comb teeth ( 22 ) of said fixed comb plate ( 2 ) rotatablely joints with the root of said fixed comb plate ( 2 ), while, the middle of the comb teeth ( 22 ) of said fixed comb plate ( 2 ) is movably set on an underlay ( 6 ) fixed on the girder, and can be shifted transversely relative to the underlay ( 6 ).