Patent ID: 9163367
Filing Date: 2015-10-20
Classification: B66C,E01D

Abstract:
1. A vertically-adjustable gantry assembly installation adapted for removal or placement of a train bridge-span of the type which spans and is supported by two piers, comprising: a gantry assembly positioned on load-bearing first ground-support locations, the gantry assembly comprising a gantry and a ground-engaging vertical support and lift system including a load bearing first vertical support assembly operatively connected to the gantry proximal to a first end thereof and a load-bearing second vertical support assembly operatively connected to the gantry proximal to a second end thereof, the vertical support and lift system including leg portions, the leg portions having ground engaging portions and gantry connection portions for connecting the leg portions to the gantry, at least one gantry connection portion including an outrigger portion that laterally distances at least one leg portion of at least one vertical support assembly from a lateral perimeter of the gantry, the vertical support and lift system operatively associated with a power system and a control system operable to vary the linear vertical distance between the ground engaging portion of a leg portion and the gantry to control the vertical height of the gantry, the gantry assembly operatively associated with a gantry conveyance system supported by the gantry, the vertical support and lift system operable to support a combined weight of the gantry and a bridge span in at least one operational vertical position above respective bridge span support-surfaces of the piers including a position corresponding to at least one horizontal transport plane in which the bridge span is conveyable relative the gantry by the gantry conveyance system.