Crane having stabilizer outriggers and vertically positionable j

Details Crane having stabilizer outriggers and vertically positionable j Crane having stabilizer outriggers and vertically positionable j

1980-11-07

1983-06-07

Blix, Trygve M.

Traversing hoists

Having means facilitating assembly or disassembly

Of traversing hoist from support

254423, B66C 1500

Patent

active

043867111

ABSTRACT:
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 a ground engaging pad at its lower end and which is non-rotatably carried by the outer end of the beam. A power drive is 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 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.

REFERENCES:
patent: 1359849 (1920-11-01), Thompson
patent: 2777586 (1957-01-01), Boysen et al.
patent: 3062386 (1962-11-01), Johnson
patent: 3105675 (1963-10-01), Blackburn
patent: 3442531 (1969-05-01), Rutledge
patent: 3888464 (1975-06-01), Felsen
patent: 4118054 (1978-10-01), Vigerie

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