FR2346281A1 - Self-lipting platform for use at sea - has free-wheeling dampers for the swell and cushioning blocks - Google Patents

Self-lipting platform for use at sea - has free-wheeling dampers for the swell and cushioning blocks

Info

Publication number
FR2346281A1
FR2346281A1 FR7609565A FR7609565A FR2346281A1 FR 2346281 A1 FR2346281 A1 FR 2346281A1 FR 7609565 A FR7609565 A FR 7609565A FR 7609565 A FR7609565 A FR 7609565A FR 2346281 A1 FR2346281 A1 FR 2346281A1
Authority
FR
France
Prior art keywords
platform
lifting
legs
self
whilst
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR7609565A
Other languages
French (fr)
Other versions
FR2346281B3 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ISHALL SA
Original Assignee
ISHALL SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ISHALL SA filed Critical ISHALL SA
Priority to FR7609565A priority Critical patent/FR2346281A1/en
Publication of FR2346281A1 publication Critical patent/FR2346281A1/en
Application granted granted Critical
Publication of FR2346281B3 publication Critical patent/FR2346281B3/fr
Granted legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E02B17/04—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction
    • E02B17/08—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction for raising or lowering
    • E02B17/0818—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction for raising or lowering with racks actuated by pinions

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Revetment (AREA)

Abstract

A self-lifting platform has a rack forming the corner of one of its legs, and acts through pinions controlled by couplings secured to a beam. The beam is fixed to the platform on damping details, and these which act as guides are arranged between the vertical surfaces of the platform and beam whilst between the horizontal surfaces blocks of rubber are placed. When a self lifting platform is installed or its position changed, and when there is heavy wave action unusually heavy shock loading can be imposed on the lifting mechanism during the sinking or lifting of the legs. Particularly when the legs hit the sea bottom, they are lifted and dropped much more rapidly by the waves, than the normal operational lifting and lowering speeds. These shock loadings are damped and their number is reduced by an arrangement in which the beam carrying the rack is attached to the platform by elastic packings such as rubber blocks. This dampens the shock when the legs hit the bottom, whilst the hammering on the seabed is prevented by two couplings on each pinion which allow the leg to fall relatively to the platform, whilst preventing the platform falling relatively to the leg.
FR7609565A 1976-03-29 1976-03-29 Self-lipting platform for use at sea - has free-wheeling dampers for the swell and cushioning blocks Granted FR2346281A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7609565A FR2346281A1 (en) 1976-03-29 1976-03-29 Self-lipting platform for use at sea - has free-wheeling dampers for the swell and cushioning blocks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7609565A FR2346281A1 (en) 1976-03-29 1976-03-29 Self-lipting platform for use at sea - has free-wheeling dampers for the swell and cushioning blocks

Publications (2)

Publication Number Publication Date
FR2346281A1 true FR2346281A1 (en) 1977-10-28
FR2346281B3 FR2346281B3 (en) 1978-12-22

Family

ID=9171288

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7609565A Granted FR2346281A1 (en) 1976-03-29 1976-03-29 Self-lipting platform for use at sea - has free-wheeling dampers for the swell and cushioning blocks

Country Status (1)

Country Link
FR (1) FR2346281A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2497850A1 (en) * 1981-01-14 1982-07-16 Brissonneau & Lotz DOUBLE SPROCKET ELEVATOR DEVICE AND SELF-LIFTING PLATFORM FOR SELF-LIFTING MARINE PLATFORM
FR2753466A1 (en) * 1996-09-19 1998-03-20 Brissonneau & Lotz Powered lifting drive for marine platforms
EP1260480A3 (en) * 2001-05-21 2004-12-01 Hydro Mobile Inc. Elevating platform assembly
CN106544997A (en) * 2016-10-18 2017-03-29 武汉船用机械有限责任公司 A kind of guiding mechanism of truss leg jacking system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2497850A1 (en) * 1981-01-14 1982-07-16 Brissonneau & Lotz DOUBLE SPROCKET ELEVATOR DEVICE AND SELF-LIFTING PLATFORM FOR SELF-LIFTING MARINE PLATFORM
EP0056753A1 (en) * 1981-01-14 1982-07-28 BRISSONNEAU ET LOTZ MARINE Société anonyme dite: Lifting device for self-elevating off-shore platform
FR2753466A1 (en) * 1996-09-19 1998-03-20 Brissonneau & Lotz Powered lifting drive for marine platforms
EP1260480A3 (en) * 2001-05-21 2004-12-01 Hydro Mobile Inc. Elevating platform assembly
CN106544997A (en) * 2016-10-18 2017-03-29 武汉船用机械有限责任公司 A kind of guiding mechanism of truss leg jacking system
CN106544997B (en) * 2016-10-18 2019-05-17 武汉船用机械有限责任公司 A kind of guiding mechanism of truss leg jacking system

Also Published As

Publication number Publication date
FR2346281B3 (en) 1978-12-22

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Legal Events

Date Code Title Description
ST Notification of lapse