Traversing hoists – Having means facilitating assembly or disassembly – Of boom sections
Patent
1979-04-06
1980-12-30
Kashnikow, Andres
Traversing hoists
Having means facilitating assembly or disassembly
Of boom sections
212231, B66C 2300
Patent
active
042418372
ABSTRACT:
An articulated boom crane, constructed to allow convenient conversion to straight boom crane operation, and having a secondary boom that has adjustably extensible members supporting a boom tip assembly and that can be selectively coupled to a main boom either in an articulated crane configuration or in a straight boom crane configuration. In the disclosed embodiments, this selective coupling is effected by means of sets of attachment plates fixed to the secondary boom which allow either end portion of the boom to be attached to a pair of side plates pivotally connected to the main boom. Centering posts on the secondary boom aid in aligning the side plates and attachment plates, and tapered pins are engaged through holes in the plates, to provide their secure coupling. When the crane is in the straight boom configuration, stop plates on the side plate prevent movement of the secondary boom with respect to the main boom as a result of load forces. In an alternative embodiment of the invention, conversion to straight boom operation is achieved by use of an extensible member that can be extended from either end of the secondary boom, and a boom tip assembly that can be selectively attached to the projecting end of the extensible member.
REFERENCES:
patent: Re27763 (1973-09-01), Fauchere
patent: 3572517 (1971-03-01), Liebherr et al.
LandOfFree
Convertible articulated crane does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Convertible articulated crane, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Convertible articulated crane will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3148