Deployable bridge

Details Deployable bridge Deployable bridge

1993-03-23

1994-03-29

Britts, Ramon S.

Bridges

Truss

Details

14 24, 14 4, E01D 1512

Patent

active

052973085

ABSTRACT:
A bridge includes a bridge element which has a basic bridge body; a folding ramp situated at opposite sloped end faces of the bridge body; a hinge connection pivotally attaching each folding ramp to the bridge body; and a locking device supported by the bridge body for locking the folding ramp to the bridge body in the downfolded position of the ramp in which the ramp forms a common access ramp with the respective sloped end face of the bridge body. The locking device includes a locking pin and an actuating device for moving the locking pin into a locking position or into a withdrawn position. In the locking position the locking pin extends into a locking pin-receiving opening of the folding ramp if the folding ramp is in its downfolded position or into a locking pin-receiving opening of an adjoining basic bridge body in the upfolded position of the folding ramp. The hinge connection includes a double-jointed lever connected to the bridge body and the respective folding ramp by pivotal joints. The distance between the pivotal joints is such that pivotal motion of the folding ramp is effected with a play relative to the bridge body. Each folding ramp and the bridge body have pressure surfaces being pressed to one another by pressure forces in the upfolded position of the folding ramps.

REFERENCES:
patent: 3504389 (1970-04-01), Longbottom
patent: 3597784 (1971-08-01), Gehlen
patent: 4520523 (1985-06-01), Fitzgerald-Smith et al.

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