Gate-handling crane

Details Gate-handling crane Gate-handling crane

1993-09-10

1994-11-08

Huppert, Michael S.

Traversing hoists

With haul-in line

294 8231, 294907, 405106, B66C 138

Patent

active

053619161

ABSTRACT:
Disclosed is a crane for moving an object such as a water dam gate having an attachment device, e.g., a hook, to be engaged by a hookup link. The link is mounted on the crane lifting block for link movement between a first position for engaging the gate hook and a second position for releasing the hook. Aspects of the invention involve a first apparatus for detecting when the link is within a predetermined location near the hook and a second apparatus for determining whether the link is in the first position or the second position. Other aspects of the invention involve a unique cable reel and link line arrangement whereby the hookup link is engaged or disengaged from the hook. A method for moving an object, e.g., a gate of a dam, is also disclosed.

REFERENCES:
patent: 2125928 (1938-08-01), Knerr
patent: 2130354 (1938-09-01), Madsen
patent: 2169316 (1939-08-01), Zwald
patent: 2335272 (1943-11-01), Grunwell et al.
patent: 2718320 (1955-09-01), Nelson et al.
patent: 4334217 (1982-06-01), Nield et al.

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