Overload control for lifting boom

Details Overload control for lifting boom Overload control for lifting boom

B - Operations, Transporting

66

F

187/1.1

B66F 11/04 (2006.01) B66F 17/00 (2006.01)

Patent

CA 1041918

Inventor: JOHN L. GROVE Title: OVERLOAD CONTROL FOR LIFTING BOOM Abstract of the Disclosure A machine has a movable boom for lifting a load, and an over- load sensing device mounted on the boom to sense boom deflection. The overload sensing device includes a rigid beam having one end secured to a vertical side plate of the boom only by anchors spaced widely apart, welded preferably on opposite sides of the centroid or neutral axis of the boom side plate. The beam has a free end, on which an adjustable contact plate is carried, to engage a switch adjustably carried on a mounting plate secured to the beam side plate.

245020

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