| 摘要 |
A very large, flexibility distortion resist and comb-type bridge expansion joint, comprises a fixed comb plate (2) and a moved comb plate (1) which are respectively disposed on the girders (10) where at the two sides of the bridge expansion joint, the moved comb plate (1) has any comb teeth (11) at its first end, and the comb teeth (11) interdigitate with the comb teeth (21) ofthe fixed comb plate(2) characterized in that said moved comb plate (1) has a rotating shaft(8) at the bottom of its second end, and the two ends ofthe rotating shaft (8) are pivoted in the shaft seat(7) which is directly or indirectly fixed on the girders(10). Compared with the prior art, this invention design that around the second end of the moved comb plate is rotatable, by which the moved comb plate will rotate round the girders when the girders have deflection distortion and the ends of the girders are raising or sinking. Therefore, the moved comb plate can keep flat to avoid damage ofthe expansion joint, and to ensure that the vehicle can pass safely and smoothly. |
