Device for hydraulically actuating winches in a pipe-laying mach

Details Device for hydraulically actuating winches in a pipe-laying mach Device for hydraulically actuating winches in a pipe-laying mach

1999-10-04

2000-12-26

Walsh, Donald P.

Implements or apparatus for applying pushing or pulling force

Apparatus for hauling or hoisting load, including driven...

Device includes rotatably driven, cable contacting drum

254291, 254367, B66D 108

Patent

active

06164627&

ABSTRACT:
The actuating device, in particular for a pipe-laying machine, according to the present invention comprises a first winch (4) and a second winch (5) for respectively operating a movable gripping element along a side arm of said machine and the side arm itself. A main oil-hydraulic circuit (1a) is also provided for actuating a first hydraulic motor (6) and a second hydraulic motor (7) respectively associated with said first winch (4) and with said second winch (5), said first hydraulic motor (6) comprising a friction clutch (14) actuated by a secondary oil-hydraulic circuit (1b) for controlled free descent.

REFERENCES:
patent: 598277 (1898-11-01), Kanzler et al.
patent: 3273860 (1966-09-01), Weisenbach
patent: 4088304 (1978-05-01), Gradert
patent: 4223871 (1980-09-01), Braithwaite
patent: 4261451 (1981-04-01), Strong
patent: 4337926 (1982-07-01), Dehaan
patent: 4398698 (1983-08-01), Crawford et al.
patent: 4516755 (1985-05-01), Uchimura
patent: 5398911 (1995-03-01), Holster
patent: 6012707 (2000-01-01), Enlund

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