Jack-up rig crane

Details Jack-up rig crane Jack-up rig crane

1995-12-22

1996-12-03

Taylor, Dennis L.

Hydraulic and earth engineering

Marine structure or fabrication thereof

With work deck vertically adjustable relative to floor

212307, 4051951, 405196, E02B 1708, B66C 2352

Patent

active

055801897

ABSTRACT:
A boat lifting crane includes an annular ring beam mounted on the barge deck of a jack-up rig about one of the vertical openings of the rig that receives one of the legs and its elevating units. The ring provides spacing away from the leg, its opening and its elevating unit so that the ring derives all of its structural integrity from the barge or hull of the jack-up unit. The ring provides upper and lower bearing surface portions. A crane gantry extends about a selected one of the legs and its adjacent elevating units of the jack-up rig, the gantry having front and rear portions. A boom pivotally mounts to the front portion of the gantry. Roller bearings and/or other friction reduction devices on the front portion of the gantry transfer load to the ring upper surface. Hook rollers and/or other friction reduction devices on the rear portion of the gantry transfer uplift load to the ring at the ring lower surface. The ring and the gantry are sized and shaped so that the gantry can rotate fully about the leg without interfering with the operation of the leg nor with the structural integrity of the jack-up units used to elevate the leg.

REFERENCES:
patent: 1697261 (1929-01-01), Daughs
patent: 4011955 (1977-03-01), Morrow et al.
patent: 4417664 (1983-11-01), Gordon
patent: 4482272 (1984-11-01), Colin
patent: 4505616 (1985-03-01), Grzelka et al.
patent: 4589799 (1986-05-01), Hotta et al.
patent: 4627768 (1986-12-01), Thomas et al.
patent: 4652177 (1987-03-01), Gunther, Jr. et al.
patent: 4722640 (1988-02-01), Letourneau
patent: 4813814 (1989-03-01), Shibuta et al.
patent: 4892202 (1990-01-01), Hey et al.
patent: 5092712 (1992-03-01), Goldman et al.
patent: 5102264 (1992-04-01), Thomas et al.
patent: 5139366 (1992-08-01), Choate et al.
patent: 5224798 (1993-07-01), Thomas et al.

Affiliated with

Also associated with

Rating

Jack-up rig 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 Jack-up rig crane, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Jack-up rig crane will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-780773