Movable ring supported lift crane

Details Movable ring supported lift crane Movable ring supported lift crane

1981-09-08

1983-06-14

Blix, Trygve M.

Traversing hoists

Having counterweight or counterbalancing means

212189, 280402, 280415R, B66C 2373, B66C 2378

Patent

active

043878130

ABSTRACT:
A front and rear pair of crawler assemblies are provided for supporting the ring of a ring supported crane so the crane can travel under load. The front pair of crawler assemblies which form an independent transporter mechanism are selectively and reversely powered to facilitate forward and reverse as well as turning movement. The rear pair of crawler assemblies are disposed in idling arrangement.

REFERENCES:
patent: 3680720 (1972-08-01), Strange
patent: 3836011 (1974-09-01), Lampson
patent: 3868022 (1975-02-01), Greenlay et al.
patent: 4020952 (1977-05-01), Scodino
patent: 4241803 (1980-12-01), Lauber

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