Long Travel Lift System, Apparatus, and Method

摘要

A long travel lift system, apparatus, and method enables users to raise a structural cap from a structural bottom for creating a fillable space between the structural cap and structural bottom for receiving a second, cap-supporting construction intermediate the structural cap and structural bottom. The long travel lift system incorporates a series lift apparatuses, each of which include a telescopic tube construction and winch assembly for imparting a lift force to an inner tube of the telescopic tube construction for extending the inner tube relative to an outer tube. The load lifting force is transmitted to the inner tube from the winch assembly via a pulley assembly and lengthwise slot formed in the outer tube of the tube construction. The outer tube is reinforced with various structures in view of the slot formation. The winch assembly is outfitted with a transmission for enhancing rotational speed of the winch assembly.

主权项

1. A long travel lift system for enabling users to raise a structural cap from a structural bottom for creating a fillable space therebetween, the fillable space for receiving a second, cap-supporting construction intermediate the structural cap and structural bottom, the long travel lift system comprising, in combination:
a series of at least four lift apparatuses, each lift apparatus comprising a telescopic tube construction and means for imparting a lift force, the tube construction comprising an inner tube and an outer tube, said means thus for lifting the inner tube relative to the outer tube, the inner tube comprising an upper inner tube end and a lower inner tube end, the upper inner tube end comprising a beam-receiving lift trough, the beam-receiving lift trough comprising two upwardly extending parallel trough walls and a trough bottom portion, the trough bottom portion connecting the parallel walls, the lift apparatuses being positionable inwardly adjacent four structural corners of the structural bottom in inferior adjacency to the structural cap, at least two lift apparatuses being spaced lengthwise in inferior adjacency to each of two parallel cap support beams supporting the structural cap, the means for imparting a lift force being firstly operable to lift the inner tube relative to the outer tube for lifting the beam-receiving troughs into engagement with the cap support beams for providing at least four secondary points of structural cap support, the structural cap being separable from the structural bottom and supportable by the secondary points of structural cap support, the means for imparting a lift force being secondly operable to lift the inner tube relative to the outer tube for transmitting lift force into the structural cap via the cap support beams for lifting the structural cap to a raised position in superior adjacency the structural bottom, the raised position defining the fillable space intermediate the structural cap and the structural bottom for receiving the second, cap-supporting construction.