Gantries

Details Gantries Gantries

B - Operations, Transporting

66

C

212/6, 254/67

B66C 19/00 (2006.01) B66C 19/02 (2006.01)

Patent

CA 1105891

Abstract of the Disclosure Leg structure for portable, height-adjustable gantries is disclosed having an upper, single vertical tubular post member telescopingly received within an open-ended sleeve formed by coupled aligned channel members of lower, break-apart sectional supporting framework. The channel members are supported and elevated by diagonal bracing members and struts giving a generally inverted-Y shaped configuration to the leg so that it can straddle objects and permitting the free, unobstructed downward passage of the post through the lower opening of the sleeve. A locking bolt passes through aligned holes in the post and channels to selectively hold their relative positions, with hand-operated winch means aiding the movement of the post. Post extension members are disclosed which can be added to the leg post while the gantry is assem- bled. The plate connection between the top of the post and a load-supporting I-beam is externally and internally braced by triangles and post weldment of casting insert-elements, respectively. Alternative embodiments show plate and tubular spacer channel coupling arrangements, and solid post-to-frame and non-breakdown frame leg configurations. -1-

316192

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