WO1996015342A1 - Plate-forme d'acces - Google Patents

Plate-forme d'acces Download PDF

Info

Publication number
WO1996015342A1
WO1996015342A1 PCT/GB1995/002614 GB9502614W WO9615342A1 WO 1996015342 A1 WO1996015342 A1 WO 1996015342A1 GB 9502614 W GB9502614 W GB 9502614W WO 9615342 A1 WO9615342 A1 WO 9615342A1
Authority
WO
WIPO (PCT)
Prior art keywords
platform
access
base
mast
platform base
Prior art date
Application number
PCT/GB1995/002614
Other languages
English (en)
Inventor
Daniel Alexander Constantinis
Original Assignee
E M & I (Safety Systems) Limited
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
Priority claimed from GB9422573A external-priority patent/GB9422573D0/en
Application filed by E M & I (Safety Systems) Limited filed Critical E M & I (Safety Systems) Limited
Priority to AU38492/95A priority Critical patent/AU3849295A/en
Publication of WO1996015342A1 publication Critical patent/WO1996015342A1/fr

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
    • E04G3/28—Mobile scaffolds; Scaffolds with mobile platforms
    • E04G3/30—Mobile scaffolds; Scaffolds with mobile platforms suspended by flexible supporting elements, e.g. cables
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B9/00—Kinds or types of lifts in, or associated with, buildings or other structures
    • B66B9/16—Mobile or transportable lifts specially adapted to be shifted from one part of a building or other structure to another part or to another building or structure
    • B66B9/187—Mobile or transportable lifts specially adapted to be shifted from one part of a building or other structure to another part or to another building or structure with a liftway specially adapted for temporary connection to a building or other structure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
    • B66F11/04—Lifting devices specially adapted for particular uses not otherwise provided for for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations
    • 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
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
    • E04G3/20—Scaffolds essentially supported by building constructions, e.g. adjustable in height supported by walls
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
    • E04G3/24—Scaffolds essentially supported by building constructions, e.g. adjustable in height specially adapted for particular parts of buildings or for buildings of particular shape, e.g. chimney stacks or pylons
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
    • E04G3/24—Scaffolds essentially supported by building constructions, e.g. adjustable in height specially adapted for particular parts of buildings or for buildings of particular shape, e.g. chimney stacks or pylons
    • E04G3/243—Scaffolds essentially supported by building constructions, e.g. adjustable in height specially adapted for particular parts of buildings or for buildings of particular shape, e.g. chimney stacks or pylons following the outside contour of a building

Definitions

  • THIS INVENTION concerns an access platform to support personnel, for example, to enable maintenance work to be carried out on a fixed column or other surface and is particularly intended to enable maintenance engineers to work upon the supporting legs or other structural members of an offshore drilling platform although it may be used in many applications where normally inaccessible parts of a structure require attention.
  • an access platform comprising a rectangular base frame having upstanding vertical corner posts and a rectangular guard rail all suspended by four corner cables and a central suspension line.
  • the platform is lowered into place without personnel on board, and a tie strap is then taken around the column and made fast by a ratchet handle on the base.
  • the platform is made fast against the column.
  • a leg pivotally attached to the rear of the base is tensioned by a line such that its forward edge is also braced against the column.
  • the entire platform is supported by and braced against the column such that it cannot fall away in the event of failure of the suspension line.
  • the platform may be occupied by maintenance personnel.
  • Another disadvantage is the difficulty which may be experienced when bracing the platform against a surface which is other than vertically or horizontally disposed with respect to the platform base.
  • an access platform to support personnel, for maintenance of a fixed structure comprising a platform base, cable means for suspending same in a horizontal attitude, and at least one tie member adapted to pass around the fixed structure and having means whereby the tie member may be made fast on the platform to brace the latter rigidly against the structure sufficiently to support the platform and prevent it from falling away from the structure in the event of failure of the suspending cable means; characterised in that the suspending cable means is attached to at least one rigid member extending upwardly from a part of the platform base and located in use other than in front of personnel positioned on the platform base, thus to provide unobstructed forward access to a work site.
  • adjustable oraci ⁇ g means are provided on a front portion of the platform base and adapted to en. : e the latter to be braced against a surface which is other than vertically or horizontally disposed with respect to the platform base.
  • Fig. 1 illustrates schematically, in elevation, an access platform made in accordance with the invention and made fast in contact with a fixed column;
  • Fig. 2 is a horizontal section taken along line II— II of
  • Fig. 3 is a plan view of a part of the access platform.
  • An access platform generally indicated at 11 is to be made fast on the column 10 such that it may be occupied by maintenance engineers to carry out work on the column.
  • the platform consists essentially of a rectangular base frame 12, four upright corner members 13 and a rectangular guard rail 14 extending horizontally around the tops of the corner members 13.
  • a rigid tubular mast 30 Extending upwardly from the base frame 12 centrally at the rear thereof which is a rigid tubular mast 30, an upper part 31 of which being removably attached via a collar 32 and removable fixing pins.
  • the vertical length of the upper part 31 is somewhat in excess of the height of the corner posts 13 and at its top it describes an arc at 33 and terminates in a horizontal portion 34 extending forwardly over the centre of the platform 12.
  • Reinforcing fillets 35 and 36 are attached by welding to the upper part 31 and a pair of suspension lines 17 are attached by fixed eye bolts 16 to the forwardly extending horizontal portion 34, a reinforcing plate 39 serving to distribute the load along the latter.
  • the parts 30 to 35 and 16 and 17 serve together to support the access platform in use.
  • a pair of diverging supporting struts 37 welded to the lower end of column 30 extend beneath the platform base 12 and are further welded thereto for additional support.
  • bracing frame 18 Extending forwardly from the rectangular part of the base frame 12 is a bracing frame 18 which, as can be seen in Fig. 2, is pivotally attached at 38 to the front member of the base frame 12.
  • the forward edge of bracing frame 18 is V-shaped to encompass part of the circumference of column 10, and the whole frame 18 can pivot about a horizontal axis to enable the platform base to be braced against a surface which is other than vertically or horizontally disposed with respect to the platform base.
  • the front edge of frame 18 may be provided with rollers which abut the surface of the column 10.
  • a flexible ratchet strap or tie member 20 which, in use, is taken around column 10 and made fast by a ratchet handle 21 attached to the opposite side front region of the base frame 12.
  • leg 23 Pivotally attached (optionally) to the two rear corners 22 of the base frame 12 is a leg 23 which, as can be seen in Fig. 1, is adapted to extend downwardly and forwardly at an angle of approximately 30° into contact with the surface of column 10 beneath the bracing member 18.
  • the leg 23 is divided longitudinally into two parts which are joined pivotally at 24 on a swivel and the forward edge 25 of the leg is V-shaped to accommodate a part of the circumference of the column 10. Once again the swivel action of the forward part of leg 23 will accommodate a surface at an angle other than vertical or horizontal.
  • a toe board 28 surrounds the base of the platform to prevent tools and other equipment from being lost over the side.
  • the access platform is installed by being lowered initially to the required level whilst unoccupied.
  • leg 23 may depend, at a greater angle, from the base frame 12 with line 26 extended.
  • an engineer who has descended to approximately the same level on his own descent lines, is able to manoeuvre to take strap 20 around column 10 and secure it by the ratchet handle 21 thus bracing the frame 18 against the column surface.
  • the engineer will then draw line 26 upwardly through jammer 27 until the line is taut with leg 23 braced against the surface of the column at 25.
  • bracing frame 18 and the forward part of leg 23 may be interchanged with similar members having different front edge formations to match different work surfaces, and the adjustability of leg 23 enables it to be braced against, for example, a part of the column having greater or lesser dimensions than the part with which frame 18 is in contact.
  • the fixing of the access platform rigidly with respect to the column 10 satisfies safety regulations and provides a rigid and comfortable structure from which work may be carried out and in which tools and other equipment may be safely deposited within the confines of the toe board 28. Forward access to the column is unobstructed since the suspension system is located behind the operator.
  • suspension mast consisting of members 30, 36 may be replaced by two upright members disposed at the two rear corners of the platform or slightly forward of the rear edge, and attached jointly or separate ly to two or more suspension lines. The requirement is that full unobstructed access to the work site forwardly of the platform should be available.
  • the toe board 28 at the front of the platform and/or at one or both sides thereof may be replaced by upstanding walls pivotally attached along the bottom of the platform so that it may be lowered to a horizontal position and supported by chains or the like.
  • the access platform may be used as a diving platform from which divers may descend into the water. In the case of a forward diving platform this may, if required, rest upon the bracing frame 18.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Transportation (AREA)
  • Automation & Control Theory (AREA)
  • Emergency Lowering Means (AREA)

Abstract

Plate-forme (11) destinée à servir de support à du personnel pour la maintenance d'une structure fixe telle que le pied de support (10) d'une plate-forme de forage marin, qui est constituée d'un mât vertical rigide (30, 31) fixé à l'arrière de la plate-forme et se terminant au-dessus de celle-ci par une partie horizontale (34). Deux câbles de suspension (17) sont fixés séparément à la partie horizontale (34) afin de maintenir la plate-forme en suspension sur un plan horizontal. La plate-forme est conçue pour être amarrée contre la colonne de support (10) au moyen d'une sangle (20) et d'un cadre se projetant vers l'avant (18) qui est monté en pivot (58) à la partie avant de la base de la plate-forme. Un autre montant de support incliné (23) est pourvu d'une partie avant montée en pivot (25) qui repose également contre la colonne (10). Ainsi, toute la structure est amarrée et soutenue par la colonne (10) afin d'alléger la tension exercée sur les câbles de suspension (17). En positionnant le mât (30, 31) à l'arrière de la plate-forme, on dégage totalement l'accès à la zone de travail située à l'avant de la plate-forme.
PCT/GB1995/002614 1994-11-09 1995-11-07 Plate-forme d'acces WO1996015342A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU38492/95A AU3849295A (en) 1994-11-09 1995-11-07 An access platform

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB9422573A GB9422573D0 (en) 1994-11-09 1994-11-09 An access platform
GB9422573.7 1994-11-09
GB9516328.3 1995-08-09
GB9516328A GB2294921B (en) 1994-11-09 1995-08-09 An access platform

Publications (1)

Publication Number Publication Date
WO1996015342A1 true WO1996015342A1 (fr) 1996-05-23

Family

ID=26305950

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1995/002614 WO1996015342A1 (fr) 1994-11-09 1995-11-07 Plate-forme d'acces

Country Status (2)

Country Link
AU (1) AU3849295A (fr)
WO (1) WO1996015342A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010025977A1 (fr) 2008-09-04 2010-03-11 Palfinger Systems Gmbh Plateforme d’entretien pour construction maritime
AT510163B1 (de) * 2010-12-21 2012-02-15 Karl U Albert Kruch Ges M B H & Co Kg Ing Anordnung bei signalanlagen mit einem signalmast
AT511963A4 (de) * 2012-03-28 2013-04-15 Karl U Albert Kruch Ges M B H & Co Kg Ing Anordnung bei Eisenbahnanlagen mit einem Signalmast
JP2014201952A (ja) * 2013-04-04 2014-10-27 旭化成ホームズ株式会社 足場構造
CN104577835A (zh) * 2015-01-21 2015-04-29 国家电网公司 户外隔离开关操动机构的安装作业平台
CN105155830A (zh) * 2015-09-11 2015-12-16 杭州江润科技有限公司 组合式固定整体提升电梯井定型化操作平台的施工方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH594559A5 (en) * 1975-05-23 1978-01-13 Ragt Ag Mobile equipment for working on high structures
WO1992000423A1 (fr) * 1990-06-27 1992-01-09 E M & I (Safety Systems) Limited Plate-forme d'acces

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH594559A5 (en) * 1975-05-23 1978-01-13 Ragt Ag Mobile equipment for working on high structures
WO1992000423A1 (fr) * 1990-06-27 1992-01-09 E M & I (Safety Systems) Limited Plate-forme d'acces

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010025977A1 (fr) 2008-09-04 2010-03-11 Palfinger Systems Gmbh Plateforme d’entretien pour construction maritime
US8585324B2 (en) 2008-09-04 2013-11-19 Palfinger Systems Gmbh Maintenance platform for off-shore construction
AT510163B1 (de) * 2010-12-21 2012-02-15 Karl U Albert Kruch Ges M B H & Co Kg Ing Anordnung bei signalanlagen mit einem signalmast
AT510163A4 (de) * 2010-12-21 2012-02-15 Karl U Albert Kruch Ges M B H & Co Kg Ing Anordnung bei signalanlagen mit einem signalmast
AT511963A4 (de) * 2012-03-28 2013-04-15 Karl U Albert Kruch Ges M B H & Co Kg Ing Anordnung bei Eisenbahnanlagen mit einem Signalmast
AT511963B1 (de) * 2012-03-28 2013-04-15 Karl U Albert Kruch Ges M B H & Co Kg Ing Anordnung bei Eisenbahnanlagen mit einem Signalmast
JP2014201952A (ja) * 2013-04-04 2014-10-27 旭化成ホームズ株式会社 足場構造
CN104577835A (zh) * 2015-01-21 2015-04-29 国家电网公司 户外隔离开关操动机构的安装作业平台
CN105155830A (zh) * 2015-09-11 2015-12-16 杭州江润科技有限公司 组合式固定整体提升电梯井定型化操作平台的施工方法

Also Published As

Publication number Publication date
AU3849295A (en) 1996-06-06

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