| 摘要 |
PROBLEM TO BE SOLVED: To provide an expansion device for a bridge for improving the problem such as drivability, noise and vibration of a vehicle and the environmental deterioration in the vicinity of a shoe seat by the expansion device.SOLUTION: An expansion device for a bridge is provided so that a slide plate 3 is installed so as to be freely movable on a finger plate with its finger plate as a pedestal by taking charge of the expansion in the bridge axial direction by using a conventional comb-shaped expansion device, and the wedge-shaped slide plate 3 having a pair of inclination angles &thetas; is arranged so that the slide plate 3 can be contrarily converted, and becomes a structure capable of converting the expansion in the bride axial direction in the bridge axial right-angled direction, and an introduction source of contrary conversion is generated from the expansion of a bridge girder, and is transmitted to the gear function, and the expansion is absorbed within an interval of a variation area S of the slide plate 3, and a clearance formed in an expansion spacing part is filled up, and an interval of a mutually upright slide plate contact motion surfaces 5 is also minimally secured, and a travel road surface can be flushed, and thereby the problem can be solved. |
