Crane having stabilizer outriggers and vertically...

Details Crane having stabilizer outriggers and vertically... Crane having stabilizer outriggers and vertically...

B - Operations, Transporting

66

C

254/20

B66C 23/80 (2006.01) B66C 23/78 (2006.01)

Patent

CA 1160210

CRANE HAVING STABILIZER OUTRIGGERS AND VERTICALLY POSOITIONABLE JACKS FOR SAME ABSTRACT OF THE DISCLOSURE A crane having outriggers that can be extended transversely of the main frame of the crane, and a vertically positionable jack is located at the outer ends of the outriggers and include a vertical, threaded shaft having ground engaging means at its lower end and which is non- rotatably carried by the outer end of the beam. Power means are located within the beam for rotating a large nut that is engaged by the shaft and which is carried by the interior portion of the beam. This power drive means includes a hydraulic motor which drives a speed reducer which in turn furnishes power to the sprocket and endless chain connection between the speed reducer and threadably driven nut.

388049

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