Patent ID: 9657448
Date: 2017-05-23
CPC Classifications: E01D,E04G

Claim:
1. A bridge maintenance vehicle, comprising: a vehicle frame comprising a chassis; a longitudinal shaft hinge; a strut, having a lower end and an upper end; a vehicle frame stringer disposed along a longitudinal direction; a hanging bracket stringer disposed along the longitudinal direction; two or more cross beams, each having a first end and an opposite, second end, and disposed along a transverse direction, wherein the two or more cross beams are arranged in parallel to each other, and perpendicular to the vehicle frame stringer and the hanging bracket stringer; and a suspension arm, having a vertical rod and a hook portion extending and bending from the vertical rod, the hook portion of the suspension arm having at least one fixing point for fixing a lifting rope or a lifting rope winding and unwinding device, wherein the chassis is configured to be located at an upper surface of a bridge, the chassis is hinged to the lower end of the strut through the longitudinal shaft hinge, the upper end of the strut is fixed to the vehicle frame stringer, the first end of each of the cross beams is fixed to the vehicle frame stringer, the second end of each of the cross beams is connected to the hanging bracket stringer, an upper end of the vertical rod of the suspension arm is fixed to the hanging bracket stringer; wherein the suspension arm is capable of extending outside of the bridge, and the at least one fixing point is configured to be located below a lower surface of the bridge; and wherein each of the cross beams is removable from the hanging bracket stringer, such that the bridge maintenance vehicle is operably moveable across an obstacle on the bridge by sequentially disconnecting a first cross beam of the cross beams from the hanging bracket stringer so as to define a gap between the first cross beam and the hanging bracket stringer that allows the obstacle to pass through the first cross beam and reconnecting the first cross beam to the hanging bracket stringer when the bridge maintenance vehicle is moved to make the obstacle pass the first cross beam through the gap, and repeatedly disconnecting an immediately next cross beam of the cross beams from the hanging bracket stringer and reconnecting the next cross beam to the hanging bracket stringer when the bridge maintenance vehicle is moved to make the obstacle pass the next cross beam until the bridge maintenance vehicle is moved to make the obstacle pass a last cross beam of the cross beams.