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EP0018038A1 - Apparatus for effecting a relative linear displacement between a number of columns and a body arranged for movement along said columns - Google Patents

Apparatus for effecting a relative linear displacement between a number of columns and a body arranged for movement along said columns Download PDF

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Publication number
EP0018038A1
EP0018038A1 EP19800200317 EP80200317A EP0018038A1 EP 0018038 A1 EP0018038 A1 EP 0018038A1 EP 19800200317 EP19800200317 EP 19800200317 EP 80200317 A EP80200317 A EP 80200317A EP 0018038 A1 EP0018038 A1 EP 0018038A1
Authority
EP
European Patent Office
Prior art keywords
columns
yoke
piston
pawl means
teeth
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
EP19800200317
Other languages
German (de)
French (fr)
Other versions
EP0018038B1 (en
Inventor
Bart Boon
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.)
Gusto Engineering BV
Original Assignee
RSV GUSTO ENG BV
Gusto Engineering BV
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 RSV GUSTO ENG BV, Gusto Engineering BV filed Critical RSV GUSTO ENG BV
Publication of EP0018038A1 publication Critical patent/EP0018038A1/en
Application granted granted Critical
Publication of EP0018038B1 publication Critical patent/EP0018038B1/en
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
    • E02B17/0836—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction for raising or lowering with climbing jacks
    • E02B17/0872—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction for raising or lowering with climbing jacks with locking pins engaging holes or cam surfaces

Definitions

  • the invention relates to an apparatus for effecting a relative linear displacement between a number of columns and a body arranged for movement alongs said columns, particularly in a self-lifting pontoon, each one of said columns being provided with at least one longitudinally extending series of regularly spaced apart teeth capable of cooperating with a driving and a locking pawl means each one of which means is mounted in a yoke means for a slidable movement in traverse direction with respect to the longitudinal direction of the relative column so that the pawl means can be shifted into and out of a space between two teeth, while the yoke of the driving pawl means may be moved slidably up_ and down in the longitudinal direction of the column by means of a piston-cylinder assembly connected to said yoke, said piston-cylinder assembly being connected at the other side thereof to said body.
  • a similar apparatus is known from the Dutch Patent Specification 101,883.
  • each one of said columns is in the shape of a hollow pile having a square cross section which along each one of its ribs is provided with teeth racks extending in alignment with the sides of the pile, while the piston cylinder assemblies are connected at the other ends thereof to the top of an upstanding stand construction mounted on the body.
  • the object of the invention is to provide an apparatus of the above type which may be maufactured from cheap parts which are always in supply on the market.
  • each one of said column is formed by a from the constructive point of view simple body, such as a circular pipe or pile to the outside of which there is fixed at least one upstanding teeth rack extending in the longitudinal direction.
  • Pipes and teeth racks are always in supply so that the columns can be manufactured quickly and at a low price.
  • the yoke means of the driving pawl means may advantageously be fastened to at least two axially spaced annular members or a box shaped member, which members are slidably mounted about the relative column, so that a simple guiding of the yoke means is obtained and the body does not have to be provided anymore with upstanding stand constructions like in the known apparatus. This is rendered easily feasible due to the circular shape of the column.
  • Each one of said piston-cylinder assemblies may be pivotally connected at both its ends and be connected at its said other end to the top side of thebody preferably to the yoke means of the locking pawl means, said yoke means being fixedly connected to the top side of said body.
  • a good guiding of the yoke of the driving pawl means may be obtained in a simple way by a guide shoe mounted in said yoke and facing the teeth rack, while a lateral movement of this yoke may be restricted by guide strips provided in said yoke at both sides of the teeth rack.
  • a good guiding of the body along the columns may be achieved in a simple way by guide strips provided in the yokes of the locking pawl means which guide strips are arranged at both side of the teeth rack.
  • each one of the columns is in the shape of a circular pipe 1 to which a teeth rach 2 is welded.
  • the pipe 1 extends through an opening 3 provided in the pontoon of which only the top side 4 is shown partially.
  • the yoke 5 On the top or the deck of the pontoon there is mounted a yoke 5 for the locking pawl means 6.
  • the yoke 5 comprises two parallel plates 6 including a cross support 7 as well as guide strips 8 welded to the end of the plates and disposed on either side of the teeth rack 2.
  • the yoke 12 comprises two plates 14 including a cross support 15. To these plates there are welded the section irons 16 which are connected to each other at the rear side by the cross member 17. In the section irons 16 openings 18 are cut for guiding the pawl means 13 which openings are bounded at the one end by the plate elements 19 and at the other end by the guide strips 20. Furthermore there is provided a cover plate 21 having a slot 22 for passing the teeth rack 2. The pawl means 13 is connected to a piston-cylinder assembly 23 which is connected at its other end to the cross member 17. Between the plates 14 a guide shoe 24 is additionally provided.
  • the yoke 12 is connected to two rings 25 capable of a sliding movement along the pipe 1.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Actuator (AREA)
  • Bridges Or Land Bridges (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)

Abstract

A self-liftiαg pontoon (4), having a number of columns, said columns are formed by a circular pipe or pile (1) to the outside of which at least one upstanding teeth rack (2) is fixed, which rack (2) is capable of cooperating with driving and locking pawl means (6, 13) each mounted in a yoke means (5, 12) for a slidable movement in transverse direction with respect to longitudinal extension of the relative column, the yoke means (5, 12) of the driving pawl means (6, 13) being fastened to spaced apart annular members (25) mounted about the relative column for an up and down sliding movement along said column by means of a piston-cylinder assembly (11), while the yoke means (5, 12) of the locking pawl means (6, 13) is fixed to said body.

Description

  • The invention relates to an apparatus for effecting a relative linear displacement between a number of columns and a body arranged for movement alongs said columns, particularly in a self-lifting pontoon, each one of said columns being provided with at least one longitudinally extending series of regularly spaced apart teeth capable of cooperating with a driving and a locking pawl means each one of which means is mounted in a yoke means for a slidable movement in traverse direction with respect to the longitudinal direction of the relative column so that the pawl means can be shifted into and out of a space between two teeth, while the yoke of the driving pawl means may be moved slidably up_ and down in the longitudinal direction of the column by means of a piston-cylinder assembly connected to said yoke, said piston-cylinder assembly being connected at the other side thereof to said body. A similar apparatus is known from the Dutch Patent Specification 101,883.
  • In the known apparatus each one of said columns is in the shape of a hollow pile having a square cross section which along each one of its ribs is provided with teeth racks extending in alignment with the sides of the pile, while the piston cylinder assemblies are connected at the other ends thereof to the top of an upstanding stand construction mounted on the body.
  • The manufacturing costs of this apparatus are high so that for relatively small bodies the costs of the lifting arrangement become disproportionally high.
  • The object of the invention is to provide an apparatus of the above type which may be maufactured from cheap parts which are always in supply on the market.
  • This object is attained in that in the apparatus according to the invention each one of said column is formed by a from the constructive point of view simple body, such as a circular pipe or pile to the outside of which there is fixed at least one upstanding teeth rack extending in the longitudinal direction.
  • Pipes and teeth racks are always in supply so that the columns can be manufactured quickly and at a low price.
  • For achieving that the piston-cylinder assembly is not aligned with the driving pawl means in its inserted locking position, thus a free positioning of the fastening point of the piston-cylinder assembly to the yoke of the driving pawl means, the yoke means of the driving pawl means may advantageously be fastened to at least two axially spaced annular members or a box shaped member, which members are slidably mounted about the relative column, so that a simple guiding of the yoke means is obtained and the body does not have to be provided anymore with upstanding stand constructions like in the known apparatus. This is rendered easily feasible due to the circular shape of the column.
  • Each one of said piston-cylinder assemblies may be pivotally connected at both its ends and be connected at its said other end to the top side of thebody preferably to the yoke means of the locking pawl means, said yoke means being fixedly connected to the top side of said body.
  • A good guiding of the yoke of the driving pawl means may be obtained in a simple way by a guide shoe mounted in said yoke and facing the teeth rack, while a lateral movement of this yoke may be restricted by guide strips provided in said yoke at both sides of the teeth rack. A good guiding of the body along the columns may be achieved in a simple way by guide strips provided in the yokes of the locking pawl means which guide strips are arranged at both side of the teeth rack.
  • The invention will be elucidated in more detail with reference to the drawing in which
    • Fig. 1 shows a side elevation of a lifting apparatus according to the invention,
    • Fig. 2 shows a cross section along the line II-II in fig. 1, and
    • Fig. 3 shows a corss section along the line III-III in Fig. 1.
  • As shown in the figures, in the apparatus according to the in- vantion each one of the columns is in the shape of a circular pipe 1 to which a teeth rach 2 is welded.
  • The pipe 1 extends through an opening 3 provided in the pontoon of which only the top side 4 is shown partially.
  • On the top or the deck of the pontoon there is mounted a yoke 5 for the locking pawl means 6. The yoke 5 comprises two parallel plates 6 including a cross support 7 as well as guide strips 8 welded to the end of the plates and disposed on either side of the teeth rack 2. To the plates 6 there are fastened section irons 9 to which irons 9 a corss member 10 is welded which serves for fastening a piston-cylinder assembly actuating the pawl means 6 in a similar way as will be described below for the driving pawl means.
  • Between the plates 6 there is pivotally fastened the piston-cylinder assembly 11. At the top part this piston-cylinder assembly 11 is pivotally fastened to the yoke 12 of the driving pawl means 13.
  • Likewise the yoke 12 comprises two plates 14 including a cross support 15. To these plates there are welded the section irons 16 which are connected to each other at the rear side by the cross member 17. In the section irons 16 openings 18 are cut for guiding the pawl means 13 which openings are bounded at the one end by the plate elements 19 and at the other end by the guide strips 20. Furthermore there is provided a cover plate 21 having a slot 22 for passing the teeth rack 2. The pawl means 13 is connected to a piston-cylinder assembly 23 which is connected at its other end to the cross member 17. Between the plates 14 a guide shoe 24 is additionally provided.
  • The yoke 12 is connected to two rings 25 capable of a sliding movement along the pipe 1.
  • When the floating pontoon has to be raised along the columns the pipes 1 are lowered onto the subaquous bottom whereupon the pawl means 13 is inserted into a space 28 between two teeth by means of the piston-cylinder assembly 23. Thereafter the piston-cylinder assembly 11 performs a retracting stroke whereby the pontoon is raised over this stroke length in such a manner that the locking pawl means 26 may then be inserted in a space 28. The pawl means 13 is subsequently disengaged from the teeth rack whereupon the piston-cylinder assembly 11 moves the yoke 12 upward until the pawl means 13 is facing a higher located space 28 so that the pontoon may again be raised further after the pawl means 26 is again shifted out of engagement with the teeth rack.

Claims (7)

1. An apparatus for effecting a relative linear displacement between a number of columns and a body arranged for movement along said columns, particularly in a self-lifting pontoon, each one of said columns being provided with at least one longitudinally extending series of regularly spaced apart teeth capable of cooperating with a driving and a locking pawl means, each one of which is mounted in a yoke means for a slidable movement in traverse direction with respect to the longitudinal direction of the relative columns so that the pawl means can be shifted into and out of a space between two teeth, while the yoke of the driving pawl means may be moved slidably up and down in the longitudinal direction of the column by means of a piston-cylinder assembly connected to said yoke, said piston cylinder assembly being connected at the other side thereof to said body, characterized in that each one of said columns is formed by a from the constructive point of view simple body, such as a circular pipe or pile to the outside of which there is fixed at least one upstanding teeth rack extending in the longitudinal direction.
2. The apparatus of claim 1, characterized in that the yoke means of the driving pawl means is fastened to at least two axially spaced annular members or a box shaped member, said means being slidably mounted about the relative column.
3. The apparatus of claims 1 or 2, characterized in that each of said piston-cylinder assemblies is at said other side connected to the top side of said body.
4. The apparatus of claim 3 characterized in that each of said piston-cylinder assemblies is connected to said yoke means of said locking pawl means, said yoke means being fixedly connected to the top of said body.
5. The apparatus of claim 3 or 4, characterized in that each of said piston-cylinder assemblies is pivotally mounted at both ends thereof.
6. The apparatus of claims 1-5, characterized in that in the yoke of the driving pawl means there is provided a guide shoe facing the teeth rack.
7. The apparatus of claims 1-6, characterized in that in the yokes of the pawl means there are provided guide strips mounted at both sides of the teeth rack.
EP19800200317 1979-04-06 1980-04-08 Apparatus for effecting a relative linear displacement between a number of columns and a body arranged for movement along said columns Expired EP0018038B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL7902748 1979-04-06
NL7902748A NL7902748A (en) 1979-04-06 1979-04-06 Device for generating a relative linear displacement between a number of columns and a movable body.

Publications (2)

Publication Number Publication Date
EP0018038A1 true EP0018038A1 (en) 1980-10-29
EP0018038B1 EP0018038B1 (en) 1983-11-30

Family

ID=19832945

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19800200317 Expired EP0018038B1 (en) 1979-04-06 1980-04-08 Apparatus for effecting a relative linear displacement between a number of columns and a body arranged for movement along said columns

Country Status (3)

Country Link
EP (1) EP0018038B1 (en)
DE (1) DE3065748D1 (en)
NL (1) NL7902748A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2571397A1 (en) * 1984-10-09 1986-04-11 Breheret Sa Ateliers Chantiers Bolts and collars for jack equipment and posts with racks for raising platforms
GB2166089A (en) * 1984-10-25 1986-04-30 Peter Edward Caddick Improvements in or relating to the clearing of waterways
CN110539097A (en) * 2019-09-03 2019-12-06 中船黄埔文冲船舶有限公司 Installation method and installation tool for self-elevating platform submersible pump tower pipe

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL101883C (en) * 1900-01-01
NL110411C (en) * 1955-07-20 1965-01-15
NL6500205A (en) * 1965-01-08 1966-07-11
DE1255051B (en) * 1955-07-20 1967-11-23 Long Corp De Lifting device for the optional lifting or lowering of a support leg of a floating jack-up platform
US3936032A (en) * 1973-04-19 1976-02-03 Gewerkschaft Eisenhutte Westfalia Apparatus with a working platform and adjustable legs therefor
NL7508373A (en) * 1975-07-14 1977-01-18 Scheepswerf En Maschf Holland Self lifting drilling rig platform - has parallel rack strips on each pile accommodating self adjusting pins between

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL101883C (en) * 1900-01-01
NL110411C (en) * 1955-07-20 1965-01-15
DE1255051B (en) * 1955-07-20 1967-11-23 Long Corp De Lifting device for the optional lifting or lowering of a support leg of a floating jack-up platform
NL6500205A (en) * 1965-01-08 1966-07-11
DE1252393B (en) * 1965-01-08 1967-10-19
US3936032A (en) * 1973-04-19 1976-02-03 Gewerkschaft Eisenhutte Westfalia Apparatus with a working platform and adjustable legs therefor
NL7508373A (en) * 1975-07-14 1977-01-18 Scheepswerf En Maschf Holland Self lifting drilling rig platform - has parallel rack strips on each pile accommodating self adjusting pins between

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2571397A1 (en) * 1984-10-09 1986-04-11 Breheret Sa Ateliers Chantiers Bolts and collars for jack equipment and posts with racks for raising platforms
GB2166089A (en) * 1984-10-25 1986-04-30 Peter Edward Caddick Improvements in or relating to the clearing of waterways
CN110539097A (en) * 2019-09-03 2019-12-06 中船黄埔文冲船舶有限公司 Installation method and installation tool for self-elevating platform submersible pump tower pipe
CN110539097B (en) * 2019-09-03 2021-11-30 中船黄埔文冲船舶有限公司 Installation method and installation tool for self-elevating platform submersible pump tower pipe

Also Published As

Publication number Publication date
EP0018038B1 (en) 1983-11-30
DE3065748D1 (en) 1984-01-05
NL7902748A (en) 1980-10-08

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