Separated ring segment dual pivot lift crane

Details Separated ring segment dual pivot lift crane Separated ring segment dual pivot lift crane

B - Operations, Transporting

66

C

212/24

B66C 23/36 (2006.01) B66C 23/74 (2006.01)

Patent

CA 1146499

ABSTRACT OF THE DISCLOSURE Front and rear pairs of crawler assemblies are provided for supporting separated ring segments disposed forwardly under the boom and rearwardly under the counterweight so the crane can travel under load and swing through at least a partial horizontal arc with separate pivots for the boom and counterweight. One and preferably both crawler assemblies are selectively and reversely powered to facilitate forward and reverse as well as turning movement during travel under loaded and unloaded conditions. - 1 -

370598

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