EP0052065B1 - Réducteur limiteur d'effort pour pignon de levage de plate-forme auto-élévatrice - Google Patents

Réducteur limiteur d'effort pour pignon de levage de plate-forme auto-élévatrice Download PDF

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Publication number
EP0052065B1
EP0052065B1 EP81430039A EP81430039A EP0052065B1 EP 0052065 B1 EP0052065 B1 EP 0052065B1 EP 81430039 A EP81430039 A EP 81430039A EP 81430039 A EP81430039 A EP 81430039A EP 0052065 B1 EP0052065 B1 EP 0052065B1
Authority
EP
European Patent Office
Prior art keywords
gear
limiting
pinion
reducer
platform
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.)
Expired
Application number
EP81430039A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0052065A3 (en
EP0052065A2 (fr
Inventor
François Durand
Auguste Smulders
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.)
Engrenages et Reducteurs SA
Original Assignee
Engrenages et Reducteurs 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 Engrenages et Reducteurs SA filed Critical Engrenages et Reducteurs SA
Priority to AT81430039T priority Critical patent/ATE17958T1/de
Publication of EP0052065A2 publication Critical patent/EP0052065A2/fr
Publication of EP0052065A3 publication Critical patent/EP0052065A3/fr
Application granted granted Critical
Publication of EP0052065B1 publication Critical patent/EP0052065B1/fr
Expired legal-status Critical Current

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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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/19—Gearing
    • Y10T74/19633—Yieldability in gear trains
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/19—Gearing
    • Y10T74/19637—Gearing with brake means for gearing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/19—Gearing
    • Y10T74/19642—Directly cooperating gears
    • Y10T74/1967—Rack and pinion
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/19—Gearing
    • Y10T74/19642—Directly cooperating gears
    • Y10T74/19679—Spur
    • Y10T74/19684—Motor and gearing

Definitions

  • the object of the present invention is a force limiting reduction gear for lifting pinion of self-elevating platform which allows, for the value of the rotation to be obtained at the pinion during a change of position of the leg between its guides, to reliably limit the forces transmitted by the pinion and the various gearbox organs to a precise value, while allowing the load to be distributed equitably between the different pinions of the same leg corner or same leg.
  • the reducer makes it possible to measure the force acting on each pinion, force which can be part of the weight of the platform plus part of the vertical forces due to the overturning torque, this when this torque is taken up. partly vertically by the pinions and partly horizontally by the leg guides.
  • the assembly of the reducer according to the invention is divided into two, a motor-reducer with brake mounted floating on the input shaft of a second reducer which is the basic reducer connected directly to the pinion, the geared motor with brake having a reaction arm which is connected to a fixed point of the lifting system by at least one hydraulic cylinder whose fluid pressure is controlled, stops mechanically limiting the stroke of the cylinder.
  • each rotation of the pinion with the maximum controlled load corresponds to a rotation of the primary reduction gearbox with brake and motor which is mounted floating, the brake can be oversized, it does not need to slip to allow the pinion to rotate with these few degrees.
  • the rotation of the primary reducer corresponding to the rotation of the pinion during a change of support on the lug guides, is small enough to directly fix the arm of reaction of the primary reducer to the structure of the lifting mechanism with the interposition of a sufficiently long hydraulic cylinder.
  • the geared motor with brake has as its reaction arm a toothed wheel which meshes with a rack which slides while bearing both against an appropriate guide of the base reducer housing and against a jack. hydraulic.
  • the platform is suspended from the racks of the leg via the gables; when the tab changes position between its guides, the weight of the platform always remains on the pinions and to this weight is added a moment of reversal which overloads the teeth of the pinions which mesh with the rack or racks which tend to be mounted due to the above-mentioned overturning moment.
  • the load for which the slight rotation of the pinion can take place is not a function of the engine brake but is a function of the oil pressure in the jack against which the motorcycle - floating reducer is supported, this by means of the rack which meshes with the toothed wheel which acts as reaction arm.
  • the stroke of the jack and the corresponding length of the rack are long enough to allow a displacement corresponding to the slight rotation of the pinion multiplied by the reduction ratio of the basic reducer, reduction ratio which makes it possible to decrease substantially in the same proportion cylinder retaining force relative to the force acting between pinion and rack of the lug.
  • the rotation of the pinion is of the order of fifteen millimeters at the level of the pitch diameter for a movement of the leg by twenty-five millimeters at the level of the guides, with a reduction ratio of 1/60 for the basic reducer and a pitch diameter of the gear wheel reaction arm equal to half the pitch diameter of the pinion , the jack must be adjusted for an effort corresponding to 1/40 of the effort on the teeth of the pinion, the stroke of the jack is then 40 x 15 or sixty centimeters, which is quite achievable.
  • the basic reducer and the floating gear motor with brake are not shown in section, this for the purpose of simplification; these reducers can also be planetary reducers, mono-satellite reducers, conventional reducers with several trains as well as combinations of screw reducers with cylindrical or bevel gear trains, the only condition is that, as well the reducer of basic that the floating gear motor must be reversible, that is to say that the slow shaft must be able to drive the fast shaft with a mechanical efficiency substantially constant over time; in the case of using a conventional planetary reducer, a ring with internal teeth of a planetary gear can serve as a reaction arm, this without changing the character of the invention, the mechanical elements which are downstream of this ring to internal teeth serving as reaction arms are then considered to be mounted floating on the mechanical elements which are downstream.
  • the gearboxes chosen are a planetary gearbox with hollow shaft for the basic gearbox and a screw gearbox with hollow shaft with primary with two cylindrical trains for the floating gear motor.
  • 1 is the leg corner
  • 2 are the spacer tubes which bring together the different leg corners
  • 3 are the pairs of guides located at the top and bottom of the platform, guides against which the edges 4 from the corner of leg 1 are supported; there are generally about fifteen meters between the upper and lower guides, this makes it difficult to have less than twenty five millimeters of play between the edges 4 and each pair of guides 3.
  • 13 is the input shaft of the reduction gear 11
  • the screw reduction gear with hollow shaft 14 is mounted floating on the shaft 13 which is driven by the key 15.16 is a primary reducer with two sets of cylindrical gears which is driven at 17 by the brake motor 18 of which 19 is the terminal box and 20 the wires of supply, wires which lie substantially in the axis of rotation of the shaft 13.
  • 21 is a toothed crown which is concentric with the shaft 13 while being integral with the housing of the reducer 14, the toothed crown 21 is the arm of reaction of the reducer 14:
  • 22 is a rack which is integral with the piston 23 of the jack 24 of which 25 is the oil supply tube under pressure.
  • 26 is a guide with end-of-travel stop 27 for the rack 22.
  • the jack 24 and the guide 26 are integral with the casing of the basic reducer 11.
  • the pinions When the legs are raised, the pinions have only the weight of the legs to support, this weight is that a small fraction of the weight of the platform; on the other hand, the bending moments on the legs, during towing generally have no influence on the pinions, the clearances between guides and legs are then eliminated by blocking wedges or shims; consequently, the limitation of the forces at the pinions and their reducers is generally only important for the direction of the forces corresponding to the retention of the weight of the platform when it is lifted above the water.
  • FIGS. 1 and 2 represent a device with a single-acting cylinder; it is obvious that without changing anything in the character of the invention, the limit stop 27 can be replaced by another jack identical to 24 and that then the same anti-overload advantages can be achieved during towing with raised legs .
  • the double-acting hydraulic cylinder 30 with its supply pipes 31 and 32 is integral with the plate 33, itself integral with the casing of the basic reducer II.
  • the piston rod 34 is secured at 35 to the rack 22 guided at 26.
  • the toothed wheel 36 is secured to the input shaft 13 of the base reducer 11, this with the key 37; the double-acting hydraulic or pneumatic cylinder 38 is screwed onto the casing of the basic reducer 11, the finger 40 integral with the piston 39 can be retracted or removed from any notch of the toothed wheel 36.

Landscapes

  • General Engineering & Computer Science (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Gear Transmission (AREA)
  • Braking Arrangements (AREA)
  • Transmission Devices (AREA)
  • Jib Cranes (AREA)
  • Types And Forms Of Lifts (AREA)
  • Storage Of Web-Like Or Filamentary Materials (AREA)
  • Actuator (AREA)
  • Handcart (AREA)
  • Carriers, Traveling Bodies, And Overhead Traveling Cranes (AREA)
EP81430039A 1980-11-10 1981-11-02 Réducteur limiteur d'effort pour pignon de levage de plate-forme auto-élévatrice Expired EP0052065B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81430039T ATE17958T1 (de) 1980-11-10 1981-11-02 Kraftbegrenzungsuebersetzungsgetriebe fuer das antriebszahnrad einer selbsthebeplattform.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8024386 1980-11-10
FR8024386A FR2493887B1 (fr) 1980-11-10 1980-11-10 Reducteur limiteur d'effort pour pignon de levage de plate-forme auto-elevatrice

Publications (3)

Publication Number Publication Date
EP0052065A2 EP0052065A2 (fr) 1982-05-19
EP0052065A3 EP0052065A3 (en) 1983-08-10
EP0052065B1 true EP0052065B1 (fr) 1986-02-12

Family

ID=9248044

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81430039A Expired EP0052065B1 (fr) 1980-11-10 1981-11-02 Réducteur limiteur d'effort pour pignon de levage de plate-forme auto-élévatrice

Country Status (11)

Country Link
US (2) US4480491A (ko)
EP (1) EP0052065B1 (ko)
JP (1) JPS57160893A (ko)
KR (1) KR890000012B1 (ko)
AT (1) ATE17958T1 (ko)
BR (1) BR8107271A (ko)
CA (1) CA1175257A (ko)
DE (1) DE3173780D1 (ko)
FR (1) FR2493887B1 (ko)
SU (1) SU1110388A3 (ko)
YU (1) YU265781A (ko)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2493887B1 (fr) * 1980-11-10 1986-05-02 Francois Durand Reducteur limiteur d'effort pour pignon de levage de plate-forme auto-elevatrice
FR2607165B1 (fr) * 1986-11-26 1990-07-20 Technip Geoproduction Dispositif de suspension des jambes de support de plate-forme petroliere auto-elevatrice
JPH0247459U (ko) * 1988-09-28 1990-03-30
US5486069A (en) * 1994-06-06 1996-01-23 Breeden; John Offshore jack-up rig locking system
US5797703A (en) * 1996-02-02 1998-08-25 Searex, Inc. Elevating unit for use with jack-up rig
US5915882A (en) * 1997-06-26 1999-06-29 Letourneau, Inc. Jack-up platform locking apparatus and method
SG120998A1 (en) * 2004-09-15 2006-04-26 Offshore Technology Dev Pte Lt Interactive leg guide for offshore self elevating unit
DE102005023967B4 (de) * 2005-05-20 2007-04-19 Bos Gmbh & Co. Kg Fensterrollo mit längsverstellbarer Wickelwelle
DE102006039984A1 (de) * 2006-08-25 2008-02-28 Robert Bosch Gmbh Selbstverstärkende elektromechanische Reibungsbremse
CN102180238A (zh) * 2011-04-15 2011-09-14 宝鸡石油机械有限责任公司 自升式平台锁紧装置
CN102303328A (zh) * 2011-08-24 2012-01-04 山东工友集团股份有限公司 垂直钻排齿轮齿条同步导向装置
CN102619207A (zh) * 2012-04-19 2012-08-01 吴平平 一种用于自升式钻井平台的双输出升降装置
CN102628264A (zh) * 2012-04-19 2012-08-08 吴平平 一种用于自升式钻井平台的升降装置
FR3003324B1 (fr) * 2013-03-15 2015-03-13 Nov Blm Dispositif pour la manoeuvre en translation d'une structure mobile par rapport a un support fixe
CN105002877B (zh) * 2015-06-30 2017-03-01 浙江海洋学院 一种用于自升式海洋平台的防倾覆系统
CN107857209A (zh) * 2016-05-16 2018-03-30 贺菊香 一种变电站电力巡检设备专用支撑台
CN107574807B (zh) * 2017-08-31 2019-08-23 武汉船用机械有限责任公司 一种液压插销升降平台
KR101945674B1 (ko) * 2018-08-24 2019-04-17 배명종 승하강장치의 비상브레이크
CN108895121B (zh) * 2018-09-07 2024-05-03 莱科(衢州市)科技有限公司 蜗轮蜗杆减速器及减速电机
CN113716484B (zh) * 2021-09-13 2023-04-14 扬州工业职业技术学院 一种工程用升降机

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US236797A (en) * 1881-01-18 William gast
US1536344A (en) * 1924-09-23 1925-05-05 American Type Founders Co Printer's quoin key
US1923879A (en) * 1932-02-23 1933-08-22 George K Parsons Transmission
US3056573A (en) * 1956-07-12 1962-10-02 Rockwell Mfg Co Fluid pressure actuated valve
US3014346A (en) * 1957-09-10 1961-12-26 Jersey Prod Res Co Method and means for raising and lowering a platform
US3174353A (en) * 1961-02-23 1965-03-23 Dravo Corp Speed reducing gear
FR1305474A (fr) * 1961-07-27 1962-10-05 Dispositif répartiteur d'efforts
US3738031A (en) * 1971-01-21 1973-06-12 Westinghouse Air Brake Co Resiliently mounted elevator drive housing
US3986368A (en) * 1975-05-27 1976-10-19 Levingston Shipbuilding Company Load equalizing and shock absorber system for off-shore drilling rigs
DE2736938C2 (de) * 1977-08-16 1979-03-15 Howaldtswerke-Deutsche Werft Ag Hamburg Und Kiel, 2300 Kiel Meeres-Hubinsel
NL7709951A (en) * 1977-09-09 1979-03-13 Verolme Maschf Engineering Com Pontoon mounted work island - has leg rack pinions coupled by torsion shafts to drive unit
NL7804479A (en) * 1978-04-26 1979-10-30 Verolme Maschf Engineering Com Mobile offshore drilling platform with retractable piles - has cushions between pile climbing mechanism and pontoon pressurised when pontoon is floating
JPS5565620A (en) * 1978-11-09 1980-05-17 Ishikawajima Harima Heavy Ind Co Ltd Rack drive pinion type jack
FR2476053A2 (fr) * 1979-10-16 1981-08-21 Durand Engrenages Elevateur a double effet
FR2506715A2 (fr) * 1980-07-30 1982-12-03 Brissonneau & Lotz Dispositif de securite pour plate-forme marine
FR2493887B1 (fr) * 1980-11-10 1986-05-02 Francois Durand Reducteur limiteur d'effort pour pignon de levage de plate-forme auto-elevatrice
US4395160A (en) * 1980-12-16 1983-07-26 Lockheed Corporation Tensioning system for marine risers and guidelines
US4497591A (en) * 1983-09-06 1985-02-05 Gillis Don A Advancing mechanism and system utilizing same for raising and lowering a work platform

Also Published As

Publication number Publication date
YU265781A (en) 1983-10-31
CA1175257A (fr) 1984-10-02
ATE17958T1 (de) 1986-02-15
KR830007420A (ko) 1983-10-21
US4574650A (en) 1986-03-11
EP0052065A3 (en) 1983-08-10
FR2493887A1 (fr) 1982-05-14
EP0052065A2 (fr) 1982-05-19
FR2493887B1 (fr) 1986-05-02
KR890000012B1 (ko) 1989-03-02
US4480491A (en) 1984-11-06
BR8107271A (pt) 1982-08-03
JPS57160893A (en) 1982-10-04
DE3173780D1 (en) 1986-03-27
SU1110388A3 (ru) 1984-08-23

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