WO2008027012A1 - Crémaillères multiples utilisées dans une application d'engrenage à crémaillère dans des système mobiles ou auto-élévateurs (secteur de l'énergie marine et terrestre) - Google Patents

Crémaillères multiples utilisées dans une application d'engrenage à crémaillère dans des système mobiles ou auto-élévateurs (secteur de l'énergie marine et terrestre) Download PDF

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Publication number
WO2008027012A1
WO2008027012A1 PCT/SG2006/000250 SG2006000250W WO2008027012A1 WO 2008027012 A1 WO2008027012 A1 WO 2008027012A1 SG 2006000250 W SG2006000250 W SG 2006000250W WO 2008027012 A1 WO2008027012 A1 WO 2008027012A1
Authority
WO
WIPO (PCT)
Prior art keywords
rack
racks
pinion
moving
self
Prior art date
Application number
PCT/SG2006/000250
Other languages
English (en)
Inventor
Khim Kiong Ng
Original Assignee
Khim Kiong Ng
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 Khim Kiong Ng filed Critical Khim Kiong Ng
Priority to CNA2006800557038A priority Critical patent/CN101506463A/zh
Priority to PCT/SG2006/000250 priority patent/WO2008027012A1/fr
Publication of WO2008027012A1 publication Critical patent/WO2008027012A1/fr

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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

Definitions

  • This invention relates to the design of an apparatus and a method for use in moving or self- elevating operations.
  • This invention is applicable, though not exclusively, to self elevating drilling rigs, non-drilling platforms or vessels, moving as well as self-elevating equipment or system in both onshore and offshore applications.
  • it is a different and innovative design enabling a heavy physical body/object or system to be self-elevated or moved in linear or other motions. There is a requirement for the heavy physical object to weigh at least 200 metric tons. There is however, no maximum weight limit to this application.
  • This invention enhances the construction of the moving or self-elevating system by providing wider options in constructing an "element", without reducing the intended functionality of the system.
  • This element refers specifically to the rack used as in 'rack and pinion' (referred hereinafter as "R & P") of moving or self-elevating body or system.
  • FIG. 1 A typical R & P system used in a self-elevating or jack-up drilling rig or platform is depicted in figure 1. The following terminologies are used for the better understanding of the system.
  • R & P system is commonly used in self-elevating drilling rigs, vessels or platforms or in moving equipment or systems.
  • the rack element is now made up of multiples of solid but thinner rack in engagement with the pinion (hereinafter referred to as "MR & P") to provide the same performance as in other R & P systems.
  • an MR & P design optimizes the material availability, time and cost to construct such a rack element to be used in a R & P self-elevating or moving system.
  • FIG. 2 shows a typical single solid rack system.
  • Figure 2a shows typical design philosophy to achieve a '2-racks-as-one' configuration, and Figure 2b for '3-racks-as-one' configuration. More racks than 3 as one is feasible and still comes under the ambit of this invention.
  • FIG. 3 shows one construction method to achieve the '2-racks-as-one' configuration. Other construction methods to achieve the same multiple-racks-as-one' are possible, and shall come under the same invention as proposed herein.
  • the multiple-racks-as-one when engaged with pinion driven by one Jack motor set, provides the basic system to finally enable the rig, platform or physical body to move relative to the rack.
  • Such a contact by one pinion with the multiple racks-as-one can be termed as one 'Engagement'.
  • the driving pinions being made integral with the rig hull through the jack house structures, will provide sufficient lifting or holding force to allow the rig hull to climb up or down the multiple racks.
  • MR & P can be used to provide motion between any two parts in directions other than vertical.
  • MR & P can be used in skidding system of the large physical bodies in the horizontal or inclined direction during load out operations and others.
  • the objective of the invention is to provide an improved and innovative design to construct racks for R & P applications.
  • the innovative MR & P system increases the availability of suitable material to make the rack, which normally requires the material to be of high strength steel having high yield and tensile strength and at the same time having appropriate impact properties to meet the R & P application.
  • the application of MR & P system is not limited to using steel as the material.
  • the MR & P design will obviate or mitigate the aforementioned situation of short supply, or one which will at least provide the public with a useful and cost effective choice, together with its flexibility in design.
  • the multiple pressure surfaces of rack teeth due to multiple racks-as-one are able to absorb and withstand the load transmitted from the driving pinion of a jacking system on a self-elevating rig as though the multiple racks are made from a single solid thick plate.
  • the individual tooth-cut racks together will behave in 'stress-strain' manner to distribute the load and share it across the aggregate width or area of multiple racks, as in one solid and wide rack, in contact with each pinion.
  • the dimensional tolerance as achieved during the cutting process determines an even stress distribution in ensuring the rack material allowable yield strength limit is not exceeded.
  • This invention provides a unique manner to make a similar and typical element or component in the engagement of a moving or elevating rig, platform, vessel or system but allows thinner high strength steel racks to be used and be combined in multiples to provide the same effect and performance of the wider solid rack function.
  • the inventor has found that by making multiples of thinner rack plates to create the Engagement in a moving or self-elevating system, he is able to make the high strength material more easily available and cost effective in the event the thick high strength material is in short supply. Such an invention is able to support the construction of rigs without delay as caused by the scarcity of the thick and high strength material.
  • the scope of the invention extends to any novel moving and elevating system comprising such a MR & P system.

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

Abstract

La présente invention concerne le remplacement de l'unique crémaillère solide et épaisse utilisée dans des applications d'engrenage à crémaillère par de multiples crémaillères plus fines destinées à fonctionner d'une manière équivalente ou similaire à la crémaillère solide unique utilisée dans un ou des corps mobiles d'au moins 200 tonnes métriques dans des appareils de forage pétrolier et gazier en mer et à terre, des appareils ou plateformes de développement ou de production, comprenant tout mouvement d'un ou de plusieurs corps lourds utilisant le procédé à engrenage à crémaillère dans toutes les directions.
PCT/SG2006/000250 2006-08-30 2006-08-30 Crémaillères multiples utilisées dans une application d'engrenage à crémaillère dans des système mobiles ou auto-élévateurs (secteur de l'énergie marine et terrestre) WO2008027012A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CNA2006800557038A CN101506463A (zh) 2006-08-30 2006-08-30 在海上及陆上能源领域的移动式或自升式系统中的齿条齿轮应用中使用的多重齿条
PCT/SG2006/000250 WO2008027012A1 (fr) 2006-08-30 2006-08-30 Crémaillères multiples utilisées dans une application d'engrenage à crémaillère dans des système mobiles ou auto-élévateurs (secteur de l'énergie marine et terrestre)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/SG2006/000250 WO2008027012A1 (fr) 2006-08-30 2006-08-30 Crémaillères multiples utilisées dans une application d'engrenage à crémaillère dans des système mobiles ou auto-élévateurs (secteur de l'énergie marine et terrestre)

Publications (1)

Publication Number Publication Date
WO2008027012A1 true WO2008027012A1 (fr) 2008-03-06

Family

ID=39136195

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SG2006/000250 WO2008027012A1 (fr) 2006-08-30 2006-08-30 Crémaillères multiples utilisées dans une application d'engrenage à crémaillère dans des système mobiles ou auto-élévateurs (secteur de l'énergie marine et terrestre)

Country Status (2)

Country Link
CN (1) CN101506463A (fr)
WO (1) WO2008027012A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2963367A1 (fr) * 2010-07-30 2012-02-03 Cie Engrenages Et Reducteurs Messian Durand Ascenseur a bateau

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5092712A (en) * 1990-06-07 1992-03-03 Jerome Goldman Inclined leg jack-up platform with flexible leg guides
EP0645496B1 (fr) * 1993-09-28 1996-09-04 Technip Geoproduction Procédé et dispositif d'assemblage des membrures des jambes de support d'une plate-forme pétrolière
WO2005012649A2 (fr) * 2003-07-02 2005-02-10 Industeel France Procede d'assemblage d'un troncon de cremaillere de plate-forme petroliere auto-elevatrice
US20050226689A1 (en) * 2002-07-04 2005-10-13 Louis Primot Method for making a section of a support strut member of an offshore oil-drilling rig

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5092712A (en) * 1990-06-07 1992-03-03 Jerome Goldman Inclined leg jack-up platform with flexible leg guides
EP0645496B1 (fr) * 1993-09-28 1996-09-04 Technip Geoproduction Procédé et dispositif d'assemblage des membrures des jambes de support d'une plate-forme pétrolière
US20050226689A1 (en) * 2002-07-04 2005-10-13 Louis Primot Method for making a section of a support strut member of an offshore oil-drilling rig
WO2005012649A2 (fr) * 2003-07-02 2005-02-10 Industeel France Procede d'assemblage d'un troncon de cremaillere de plate-forme petroliere auto-elevatrice

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2963367A1 (fr) * 2010-07-30 2012-02-03 Cie Engrenages Et Reducteurs Messian Durand Ascenseur a bateau

Also Published As

Publication number Publication date
CN101506463A (zh) 2009-08-12

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