EP1194665B1 - Arrangement of a working platform - Google Patents

Arrangement of a working platform Download PDF

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Publication number
EP1194665B1
EP1194665B1 EP99958530A EP99958530A EP1194665B1 EP 1194665 B1 EP1194665 B1 EP 1194665B1 EP 99958530 A EP99958530 A EP 99958530A EP 99958530 A EP99958530 A EP 99958530A EP 1194665 B1 EP1194665 B1 EP 1194665B1
Authority
EP
European Patent Office
Prior art keywords
yoke
platform
frame structured
platform system
superjacent
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 - Lifetime
Application number
EP99958530A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1194665A1 (en
Inventor
Ove Aaland
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.)
Obo Utstyr AS
Original Assignee
Obo Utstyr AS
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 Obo Utstyr AS filed Critical Obo Utstyr AS
Publication of EP1194665A1 publication Critical patent/EP1194665A1/en
Application granted granted Critical
Publication of EP1194665B1 publication Critical patent/EP1194665B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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
    • 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
    • E04G3/34—Mobile scaffolds; Scaffolds with mobile platforms characterised by supporting structures provided on the roofs

Definitions

  • the present invention relates to a platform system comprising a working platform and a superjacent support structure of a ceiling construction, tier or beams or the like, the working platform being suspended from said support structure through a frame structured yoke, wherein the platform can be raised and lowered in relation to the yoke.
  • the invention is particularly related to a platform system for internally suspended access to carry out various jobs in large tanks, ashore and in ships and cargo holds in ships, and for example, under the deck on offshore installations. According to the invention the arrangement will in this way represent an alternative to scaffolding for such tasks.
  • US Patent No. 3.602.335 discloses a solution describing a platform from which one can carry out work on a construction, in this case an aeroplane.
  • the platform is suspended from a superjacent construction with the aid of a strengthened vertical central arm.
  • the suspension of the construction itself is achieved by a double set of rail pairs, so that the platform can be moved horizontally both in the X and Y directions. Since the platform also can be raised and lowered vertically, an operator on the platform will have access to all parts of a relevant workspace, such as around an aeroplane that is placed in a hanger etc. as indicated by the drawings in the patent.
  • European Patent 3 982 shows a working platform 20 which is suspended by wires or ropes.
  • the platform itself can be raised or lowered and rotated around a central axis.
  • the suspension is such that the rail in the ceiling construction which supports the whole construction, can be extended by the operator without him having to leave the working basket.
  • the working platform according to the invention is characterized in that the frame structured yoke comprises one or more extendable support devices which with a given force can be brought to abut the superjacent support structure to stabilize the yoke and the working platform.
  • the platform can rotate 360°. It can be driven horizontally and raised and lowered. Contrary to traditional scaffolding, the platform system can according to the invention be assembled quickly without any detriment to safety.
  • the working platform comprises at least one suspension rail for fastening of a frame structured yoke via a suspension device in the form of a housing device, around which the yoke can be rotated in the horizontal plane.
  • a suspension device in the form of a housing device, around which the yoke can be rotated in the horizontal plane.
  • the suspension arrangement comprises a runner for movement along the suspension rail.
  • the flexible access in the vertical direction is made secure and simple by equipping the platform with a means of elevation for it to be raised/lowerd with respect to the suspension point on the suspension rail.
  • the frame structured yoke comprises a stabilisation device in the form of one or more extendable supporting devices, which, at a given force, can be brought to abut the superjacent support sstructure.
  • the yoke is stabilised and prevented from tilting vertically when the operator moves to one of the ends of the suspended platform.
  • the platform system is easy to assemble, it can easily be transported and is ideal for working operations such as inspections, sandblasting, hydro jetting and painting, repair work and regular maintenance operations as carried out down in cargo holds or the like.
  • Figures 1 and 2 illustrate a schematic longitudinal elevation and side elevation of an implementation of the invention.
  • Figure 3 illustrates a schematic perspective elevation of a frame structured yoke.
  • Figures 4, 5, and 6 show an actual implementation of the invention, in which the working platform is adjusted from, for example, a position mounted in parallel to the rail to a working position across the rail after which the stabilising device is activated.
  • the figures 7 and 8 show a side and cross-section elevation, respectively, of an alternative construction for suspension of the frame structured yoke.
  • FIG. 1 shows a form of implementation of the platform system with a suspension rail 10 for fastening to a ceiling construction (tier of beams etc.) 12,14, above the workplace.
  • a suspension rail 10 for fastening to a ceiling construction (tier of beams etc.) 12,14, above the workplace.
  • the platform 16 itself is hung from a suspension point with the aid of a simple suspension arrangement 17.
  • the suspension arrangement 17 is formed from a housing device 18, the upper section 21 of which includes a set of wheels for mounting to a superjacent rail 10 (or rail pair) in the superjacent ceiling/beam construction, while the lower section 23 includes devices to rotate the lower section in relation to the upper section 23, and furthermore a yoke construction is mounted to the lower section 23.
  • the lower section 23 can be rotated in a horizontal plane.
  • the platform can be rotated horizontally 360° around the suspension point on the rail around an axis 20.
  • the housing device 18 comprises an in-built motoring drive (preferably operated by remote control by the operator on the working platform) to perform the mentioned rotation.
  • the suspension rail 10 and suspension arrangement 17 can also be slanted when required, but horizontal or approximately horizontal mounting will be most common and preferred.
  • the suspension arrangement 17 comprises a runner 22 for movement along the suspension rail 10.
  • the ceiling construction comprises a support beam 24 to which the housing device 18 is secured.
  • a yoke construction 26 is mounted on, or suspended from, the housing device 18.
  • the yoke 26 comprises, as can be seen as an example in figure 3, a basically rectangular trusswork frame construction of longitudinal and crossways frame- or beam parts 28,30, respectively, and a middle central seat 32 where the housing device 18 for the upper anchoring point for the rail unit 10 is secured.
  • the frame structured yoke can be formed into many other shapes than the rectangular. Thus, it may be in the form of an I or H shaped beam or similar.
  • the suspension arrangement 34 (wires, cables, etc.) for the working platform 16 is fastened.
  • the suspension arrangements 34 are comprised of preferably steel rope or wires, but may also include strong ropes, rods or similar tensile devices.
  • the suspension arrangements 34 have the task of carrying the floor part 36 of the platform 16 iself as this is secured via a lifting mechanism 38.
  • the frame structured yoke includes 4 cables 34, one in each corner, from which the platform is suspended.
  • the floor part can be secured by a simple mechanism for permanent anchorage at a fixed height.
  • the anchoring mechanism can furthermore be in the form of a pulley or simply as fixed knots or ears.
  • the platform being equipped with the mentioned hoisting mechanism 11 which is arranged with a known method (motor driven) for it to be raised/lowered.
  • a vertical movement in relation to the suspension point on the suspension rail is achieved.
  • the lifting arrangement for raising and lowering of the working platform can possibly be arranged in connection with the working platform itself.
  • stabilising devices in the form of one or more upward extendable (such as telescopic) rods, 40,42,44,46, as shown in figures 4-6.
  • the rods are arranged to push, with their respective ends, up against the ceiling construction with a given force such that the yoke construction is stabilised in an approximately horizontal position, and is thus prevented from tilting vertically.
  • the pushing rods include preferably piston/cylinder units.
  • the cylinder chamber can, in each unit, be put under pressure such that the piston of the unit is pushed outwards until it abuts a superjacent ceiling construction.
  • the pressure in the fluid is regulated such that a given pushing pressure is obtained and satisfactory stabilisation of the yoke construction is obtained.
  • the pushing rods 40,42,44, 46 may, according to an optional solution, be changed between a basically horizontal, collapsed, inactive position, according to figure 5, and a vertical, raised, active position according to figure 6.
  • the figures show only two of the pushing rods 40 and 44.
  • the change between collapsed and raised rod positions can be brought about by two additional piston/cylinder units mounted on the yoke frame itself, with only two being shown by the reference numbers 52 and 54 in the figures 4-6.
  • the lower part of each support rod can be hinged, such that it can be folded in a satisfactory way so that it does not take up too much space on the yoke itself.
  • the extendable pushing rods can be of any type that can be driven with the aid of a hydraulically, pneumatically or electrically driven power unit. It is also possible to use inflatable support pads and the like. Furthermore, the end of the rods can comprise wheels 66 which can roll along the superjacent surface, e.g. a plane ceiling surface. In this way, it will be possible, if necessary, to displace the construction without relieving the pushing force from the pushing rods, as the rods can roll along the ceiling surface and maintain the abutment force against the ceiling.
  • FIGS. 4-6 illustrate, according to an alternative, how the arrangement, according to the invention, is utilised.
  • These figures show the rail 10 which is secured to a superjacent (not shown) tier of ceiling beams, the yoke 26 which is suspended from the rail 10 through the housing device 18 and the platform 16 suspended downwards from the yoke 26. The person, who will work from the working platform, is not shown.
  • Figure 4 shows the constructions where the yoke 26 and the platform 16 are positioned parallel to the rail 10 in the ceiling.
  • the support rods 40-46 are collapsed in their inactive position with aid of the devices 52,54,56,58.
  • the drive unit in the suspension arrangement 17 is activated and the whole of the construction is rotated ca. 90° around a horizontal plane such that it takes up the position shown in figure 5, said position corresponding to the actual position for the working operation which will be carried out by an operator.
  • the devices 52,54,56,58 are now activated by pressurising their cylinder chambers such that the supporting rods 40-46 are raised to an approximately vertical position. Thereafter, the cylinder chambers of the rods are put under pressure such that the rods are pushed outwards and upwards until they abut the superjacent ceiling. As each extension occurs independently, the rods can be pushed towards part of the ceiling at different heights. The pressure in the fluid in each individual unit 40-46 is regulated such that a given pushing pressure is obtained and a satisfactory stabilisation of the yoke construction is obtained. Now, one person can stand at one end of the platform 16 without the suspension arrangement 17 (which is the only anchoring point to the rail 10) being exposed to damaging momentum loads.
  • the floor part 36 of the platform can be equipped with 4 runners 48 which are used for movement in connection with transport, and for movement of the floor part 36 during assembly or disassembly. Furthermore, the floor part is equipped with railings 50.
  • the assembly of the platform system is simple and it will take two fitters around 4 hours to do it.
  • the assembly starts at the bottom of the tank, with the platform parts floor 36 and railing 50, and the equipment with cables 34 and lifting mechanisms 38, including the frame structured yoke 26 with crossbeams 30, being put together.
  • the suspension rail 10 is hoisted up under the deck of the ship and fastened through a threaded rod 60 which is fed through a manhole 62 or similar and secured by the use of a wing nut 64.
  • the threaded rod 60 is secured to the lower edge of the suspension rail 10 by a known method.
  • the supporting beam/yoke construction 26 is, in advance, secured together with the suspension arrangement 18 which in its upper edge comprises a crossbolt 19 which runs through two ears, which are spaced apart, and in the upper edge of the lower part of the suspension arrangement. From the outer edge of the crossbolt 19, two carrier-arms stand perpendicular to the crossbolt and on their outer edges each supports a runner 22.
  • the suspension arrangement 18 can be equipped with an associated motorised drive unit which, with a known method, is arranged for motorised movement along the suspension rail 10.
  • the platform is lifted up to the suspension rail 10 where the runners 22 are inserted into the side members of the rail 10.
  • the floor part 36 of the platform 16 it is possible from the floor part 36 of the platform 16 to fit further lengths of the suspension rails 10 as an extension of the first fitted rail and up under the deck.
  • An alternative anchoring arrangement not shown for the suspension rail 4 can be in the form of a set of fastening brackets with through going bolt or the like, where the uppermost brackets are placed in advance, or, as they are needed, are welded or bolted down underneath the deck.
  • Another alternative anchoring arrangement (not shown) for the suspension rail can be in the form of a hoop with a hole in either end, which hangs in an existing ring, hook or the like, and which, via a through going pin or bolt with clamps fastened onto it for this purpose, anchors the suspension rail in position.
  • the yoke construction is arranged to be raised and lowered in relation to the superjacent support construction.
  • the frame structured yoke can be raised and lowered in relation to a given suspension point in the superjacent support construction.
  • the stabilising devices 40,46 see figures 7 and 8) can, in their raised position, by the mentioned controlled raising action, with a given force be brought up against the superjacent support construction.
  • the yoke construction can include its own drive unit/engine unit 70 and cable 72 by means of which the yoke 26 suspended from the cable 72 can be hoisted up towards the ceiling construction 12,14 to its working position, and thereafter, the engine can by remote control be driven by the operator to secure or loosen the yoke 26.
  • the horizontal rotation itself can be carried out manually by the operator, also because the yoke construction, including the platform, can be a lightweight construction with a total weight, for example, of 500 kg.
  • the supporting devices 40,44,46 include special upward-facing supporting feet which can be folded or taken down from a vertical to a horizontal position relative to the yoke construction.
  • the different height positions of the yoke with its supporting feet 40,46 are illustrated in figure 7 at two different height levels A and B.
  • the supporting feet do not need to have any mechanism that clamps them outwards and upwards, as explained earlier. Instead, the lifting mechanism of the yoke is used for the mentioned clamping. But even with this suspension, the supporting feet themselves may be extendable for clamping, as mentioned in the beginning.
  • the arrangement can, according to a preferred embodiment, be supplied with an extension of the floor part of the platform, stretching beyond the hanging or suspension devices 34 to secure access to tank surfaces or the like, which may be a distance (indicated as 4-7 m in the shown embodiment) from the suspension point.
  • This give greater flexibility and possibilities to work along surfaces which are a corresponding distance from the closest point of the suspension rail.
  • the suspension rail 10 can also stretch some beyond the anchoring point in the deck, it is difficult to visualise working situations where the working surface cannot be reached with this platform system according to the invention.
  • suspension rail should be equipped with a stop mechanism in both ends.
  • optional motorised equipment for use in tasks with fire-hazards such as in oil tanks, should be spark proof and fireproof otherwise.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Movable Scaffolding (AREA)
  • Earth Drilling (AREA)
  • Ladders (AREA)
EP99958530A 1999-06-11 1999-12-17 Arrangement of a working platform Expired - Lifetime EP1194665B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NO992885 1999-06-11
NO19992885A NO314551B1 (no) 1999-06-11 1999-06-11 Anordning ved arbeidsplattform som er opphengt i en overliggende b¶rekonstruksjon
PCT/NO1999/000386 WO2000077323A1 (en) 1999-06-11 1999-12-17 Arrangement of a working platform

Publications (2)

Publication Number Publication Date
EP1194665A1 EP1194665A1 (en) 2002-04-10
EP1194665B1 true EP1194665B1 (en) 2003-08-20

Family

ID=19903449

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99958530A Expired - Lifetime EP1194665B1 (en) 1999-06-11 1999-12-17 Arrangement of a working platform

Country Status (8)

Country Link
EP (1) EP1194665B1 (no)
JP (1) JP2003526750A (no)
KR (1) KR20030012789A (no)
AT (1) ATE247754T1 (no)
AU (1) AU1588100A (no)
DE (1) DE69910630D1 (no)
NO (1) NO314551B1 (no)
WO (1) WO2000077323A1 (no)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100714494B1 (ko) * 2006-05-17 2007-05-04 주식회사 옵텔콤 광통신 분배 실습 시스템의 분배용 랙구조
CN101514543B (zh) * 2009-03-16 2011-07-20 中交第二公路工程局有限公司 悬索桥施工猫道面层架设、拆除移动台车
IT1393305B1 (it) * 2009-03-26 2012-04-20 Rinieri Alberto Costruzioni Meccaniche Di Lorenzini Maria Paola Piattaforma transelevatrice per interventi di manutenzione sull'imperiale di locomotori posti su due binari affiancati, uno dei quali puo' rimanere elettricamente servito.
GB2488983C (en) 2011-03-08 2014-12-03 Suspended structure, scaffolding or formwork system
CN102926529B (zh) * 2011-08-11 2014-11-26 北京建筑工程学院 设有伸缩平台的建筑施工用自升式脚手架
KR101540380B1 (ko) * 2013-09-26 2015-07-30 삼성중공업 주식회사 헬리데크의 유지보수장치
CN104074346A (zh) * 2014-07-02 2014-10-01 吴江市明港道桥工程有限公司 一种悬挂式施工支架
ES2624211B1 (es) * 2016-01-13 2018-04-24 Puentes Y Calzadas Grupo De Empresas, S.A. Sistema para ampliar una estructura de puente atirantado, estructura de puente atirantado ampliada y su proceso constructivo
KR102610012B1 (ko) * 2021-08-11 2023-12-06 대한곤돌라주식회사 양면작업구조의 대형곤돌라

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3602335A (en) * 1969-09-25 1971-08-31 Eaton Yale & Towne Platform positioning mechanism
US3814211A (en) * 1972-03-01 1974-06-04 Mcneil Corp Air space vehicle servicing apparatus
GB2192166B (en) * 1986-01-09 1989-10-25 Alan R Magill Temporary suspended access equipment - a builder's cradle
JPH0778348B2 (ja) * 1992-06-16 1995-08-23 日本ビソー株式会社 作業ケージ用吊下げ装置

Also Published As

Publication number Publication date
NO314551B1 (no) 2003-04-07
DE69910630D1 (de) 2003-09-25
JP2003526750A (ja) 2003-09-09
AU1588100A (en) 2001-01-02
NO992885L (no) 2000-12-13
KR20030012789A (ko) 2003-02-12
EP1194665A1 (en) 2002-04-10
ATE247754T1 (de) 2003-09-15
NO992885D0 (no) 1999-06-11
WO2000077323A1 (en) 2000-12-21

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