Collapsible crane backhitch and overload signal system

Details Collapsible crane backhitch and overload signal system Collapsible crane backhitch and overload signal system

B - Operations, Transporting

66

C

212/41

B66C 23/88 (2006.01) B66C 23/90 (2006.01)

Patent

CA 1071584

ABSTRACT OF THE DISCLOSURE An energy absorbing backhitch for a lift crane including a hollow deformable element which is collapsed between squeeze rollers when the crane is overloaded a predetermined amount with respect to its rated capacity. The backhitch also includes a lift pin and means for sensing deflection of the lift pin and actuating visual and audio signals at predetermined load conditions.

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