EP2088258A2 - Appareil d'accès - Google Patents

Appareil d'accès Download PDF

Info

Publication number
EP2088258A2
EP2088258A2 EP09152490A EP09152490A EP2088258A2 EP 2088258 A2 EP2088258 A2 EP 2088258A2 EP 09152490 A EP09152490 A EP 09152490A EP 09152490 A EP09152490 A EP 09152490A EP 2088258 A2 EP2088258 A2 EP 2088258A2
Authority
EP
European Patent Office
Prior art keywords
platform
suspension structure
suspension
access apparatus
access
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.)
Withdrawn
Application number
EP09152490A
Other languages
German (de)
English (en)
Inventor
Ian Glen Winson
Kevin Ramon Finnerty
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.)
Watercare Services Ltd
Original Assignee
Watercare Services Ltd
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 Watercare Services Ltd filed Critical Watercare Services Ltd
Publication of EP2088258A2 publication Critical patent/EP2088258A2/fr
Withdrawn legal-status Critical Current

Links

Images

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
    • E04G3/24—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
    • E04G3/246—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 inside contour of a building

Definitions

  • This invention relates to an access apparatus, and especially access apparatus for providing access downwards through an access opening.
  • Covered cavities or reservoirs such as water storage reservoirs, sometimes require a user to access the interior void, for example, for purposes of inspection, repair, or cleaning work.
  • Such reservoirs most often provide access through a manhole or access opening in a roof of the reservoir.
  • the size of the access opening is typically very limited and for example, may have a width of less than 1 m.
  • Some covered reservoirs are provided with an internal steel walkway fixed against a side wall towards the top of the reservoir. As such reservoirs often have a water level close to the roof, however, the walkway is usually submerged. Therefore, it is prone to corrosion, requiring thorough and regular safety inspections.
  • the water level In addition, to perform an inspection of the ceiling of such a reservoir, the water level must be lowered below that of the internal walkway. A deflated boat is then passed through the access opening and inflated by a user on the platform. However, the water level in the reservoir is then too low to permit adequate inspection of the ceiling from the boat and so the water level needs to be raised to the required level. After inspection the boat can be deflated and removed through the access opening. This may, in some circumstances, require the water level to be lowered again to allow the user access to the platform.
  • the reservoir is usually emptied to permit inspection by waiting for the water to be consumed in normal use. Emptying and refilling the reservoir to permit inspection of the ceiling can take many hours as it is dependant on consumer demand.
  • the invention may broadly be said to consist in an access apparatus having a suspension structure, a support structure adapted to suspend said suspension structure through an access opening, and a platform assembly, the platform assembly comprising a platform structure moveable between a stowed position substantially adjacent said suspension structure and a working position extending outwardly from said suspension structure.
  • said moveable platform structure consists of a first platform pivotally mounted on said suspension structure for pivotal movement between said stowed and working positions.
  • the platform assembly also comprises a fixed platform on the suspension structure substantially planar with said platform structure when in the working position.
  • said moveable platform structure includes one or more second platforms each movable about two independent axes for movement between said stowed and working positions.
  • the or each second platform is pivotally mounted to said first platform, whereby the or each second platform is pivotable with respect to both the first platform and the suspension structure for movement between the stowed and working positions.
  • the access apparatus includes a locking mechanism, whereby the moveable platform structure may be locked in place in the working position to prevent the platform structure pivoting inadvertently.
  • the locking mechanism comprises at least one locking bolt which may, in use, be extended from the fixed platform to engage with the or each second platform.
  • the first platform has a width substantially equal to that of the suspension structure, thereby minimising overhang in the stowed position.
  • the or each second platform has a width substantially equal to or less than that of the corresponding adjacent sides of said suspension structure when in the stowed position, thereby minimising overhang in the stowed position.
  • said platform structure is supported by at least one propping means, said propping means being sufficient to support the weight of at least one human upon the platform assembly when in its working position.
  • said propping means consists of one or more extensible telescopic rods movably mounted to said suspension structure and to said platform structure at opposing ends.
  • each telescopic rod is moveably mounted such that the platform structure is permitted to move between the stowed and working positions.
  • each telescopic rod is mounted to said suspension structure by way of coupling with a fulcrum protruding therefrom.
  • each telescopic rod is moveably mounted to said platform structure by way of coupling with a fulcrum protruding therefrom.
  • said fulcrums protrude at an angle substantially coaxial with said telescopic rod when in the working position.
  • said angle is between 22.5° and 67.5°.
  • said angle is substantially equal to 45°.
  • said fulcrums protrude to the extent that said platform structure is permitted to pivot through an angle substantially equal to 90°.
  • the or each fulcrum adapted to couple with a telescopic rod supporting a first platform includes a coupling permitting said telescopic rod to pivot about a single axis.
  • the or each fulcrum adapted to couple with a telescopic rod supporting a second platform includes a coupling permitting said telescopic rod to swivel in three dimensions in moving between the stowed and working positions.
  • said coupling comprises a ball joint whereby said second platform is permitted to pivot about two independent axes.
  • said movable mounting permits said telescopic rod to swivel with respect to said fulcrum.
  • said platform structure is supported by four telescopic rods coupled to the suspension structure by way of two protruding suspension fulcrums provided on adjacent corners of said suspension structure, each fulcrum being provided with two couplings, at least one coupling permitting movement of the corresponding rod in three dimensions, and coupled to the platform structure by way of four protruding platform fulcrums, two of said platform fulcrums being provided on the outer corners of the first platform, and one platform fulcrum permitting movement of the corresponding rod in three dimensions being provided on each of the second platforms, whereby said first platform is pivotable upwardly relative to said suspension structure, and said second platforms are pivotable about two axes between the working and stowed positions.
  • the platform assembly includes at least one grating panel adapted to provide a substantially planar surface when said platform is in the working position.
  • the suspension structure consists of a framework including a plurality of spaced-apart substantially horizontal rungs at fixed intervals on at least one side of the suspension structure, thereby forming a ladder to provide human access between the first and second ends of the suspension structure when substantially vertical.
  • said rungs are provided on two opposing sides of said suspension structure.
  • the framework includes bracing members on at least one side of the suspension structure to improve torsional rigidity of the suspension structure.
  • said framework includes a base frame member provided at or adjacent an end of said suspension structure.
  • said framework consists of two opposing ladders secured together by said bracing and said base frame member.
  • the framework permits a human to climb the ladder internally with respect to said framework.
  • At least a portion of one side of the suspension structure is substantially open, said side being adjacent said platform assembly when in the stowed position.
  • the support structure consists of a plurality of stabiliser arms extending substantially radially from said suspension structure.
  • stabiliser arms are provided with adjustable feet at their distal ends, whereby the suspension apparatus may be adapted for use on an uneven surface.
  • the support structure includes a collar adapted to be provided about said suspension structure, thereby providing an opening for access through the collar and suspension structure, and further adapted to engage with said plurality of stabiliser arms and said suspension structure.
  • the collar is adapted to engage with said suspension structure in any one of two or more positions along the length of the suspension structure, thereby providing for suspension of the platform assembly at multiple depths.
  • the collar is adapted to engage with said suspension structure via a bolt or pin inserted through a pair of opposing rungs of said suspension structure.
  • the platform assembly is provided with barrier engagement means for engagement of a safety barrier.
  • the safety barrier consists of a plurality of removable barrier posts which may be inserted in and removed from said barrier engagement means, the barrier posts being adapted to support a safety rope between adjacent posts.
  • the present invention consists in a suspension apparatus providing improved access by suspension through an access opening.
  • the invention has particular application to water storage tanks, stormwater or wastewater drains and the like which commonly provide human access to an internal void via an access opening or manhole on a top surface.
  • the invention may be used in any application where vertical access is required, especially through a restricted opening.
  • the invention could be suspended through an access opening in the deck of a bridge to inspect the underside of the bridge deck.
  • the invention will be described below by reference to a preferred embodiment of a suspension apparatus according to the invention which is adapted to provide human access to the internal void of a covered or underground water reservoir.
  • the invention provides a platform which may be deployed through an access opening and suspended within the internal void of a reservoir.
  • a vertically suspended access apparatus according to the invention is shown generally referenced 1.
  • the suspension apparatus 1 consists broadly of a suspension structure 2 which, in combination with the support structure 3, suspends a platform assembly 4 internally within the internal void.
  • the suspension apparatus is adapted to support at least one user and their required tools and equipment.
  • the support structure 3 is provided on the exterior of the reservoir and preferably consists of a collar 32 engaged with the suspension structure 2 and a plurality of stabiliser arms 30 extending radially from the suspension structure 2 and support structure 3.
  • the purpose of the support structure 3 is to provide a stable platform from which the suspension structure 2 and platform assembly 4 may be suspended in a reservoir, tank, pipe or similar enclosed space typically used for the storage or transport of a liquid, most commonly water.
  • the collar 32 has an opening 33 through which the suspension structure 2 may be provided and engaged therewith.
  • the opening 33 and corresponding passage of the suspension structure 2 are preferably of a size sufficient to accommodate a human.
  • Each support leg 30 may be detached from the collar 32 for transport and storage purposes, and the collar 32 in turn may be detached from the suspension structure 2.
  • the suspension structure 2 and platform assembly 3 are suspended through an access passage, manhole, or access opening 50 in the reservoir.
  • the stabiliser arms 30 are preferably each provided with adjustable feet, typically towards their distal end for improved stability.
  • the suspension structure 2 preferably consists of a framework which includes a plurality of rungs 21 mounted transversely along the length of the suspension structure 2.
  • a portion of the rungs provided towards a first end of the suspension structure 2 are substantially hollow rungs provided in pairs on opposing sides of the suspension structure 2, whereby the collar 32 may be engaged with the suspension structure 2 by insertion of a pin or bolt through a pair of opposing rungs 21 and corresponding holes provided in the collar 32.
  • the depth at which the platform assembly 4 is suspended within the internal void may therefore be adjusted by the selection of an appropriate pair of opposing rungs 21 with which the collar 32 is to be engaged.
  • the framework of the suspension structure 2 provides an internal passage whereby the rungs form a ladder allowing a user to descend down the framework, internally with respect to the framework, towards the platform assembly 4 provided towards the second end of the suspension structure 2, and climb towards the first end of the suspension structure 2 as required.
  • the framework preferably includes a bracing member 22 provided on a side of the suspension structure 2 for rigidity.
  • the remaining side of the suspension structure 2, or at least a lower portion towards the second end thereof, is preferably open, permitting a user to step away from the suspension structure 2 on the platform assembly 4.
  • the suspension structure 2 may consist substantially of a pair of standard ladders, such as those available from Ullrich Aluminium of Manukau City, New Zealand.
  • the ladders are preferably each 3 metres in length with a width of 460mm.
  • Completing the framework is the bracing member 22 referred to above, and a base frame member 23, which both help to maintain the opposing ladders in position and improve torsional rigidity.
  • the overall length of the suspension structure may be adapted to the application of the access apparatus 1 by using or substituting a pair of ladders of the appropriate length.
  • the platform assembly 4 preferably includes a platform structure which is pivotally hinged to the suspension structure 2 and adapted to pivot between a stowed position adjacent the suspension structure 2 to permit insertion, extraction and transport of the suspension apparatus 1, and a working position extending outwardly from the suspension structure 2.
  • the platform structure when in the working position, is in a plane substantially orthogonal to the suspension structure 2 as shown in Figures 1 , 4 and 5 , providing a substantially horizontal surface from which a user can inflate and launch a boat, for example.
  • the platform structure comprises a first platform 40 pivotally hinged to the open side of the suspension structure 2, and two second platforms 41 each movable about two independent axes between the stowed and working positions.
  • the second platforms may be pivotally hinged to opposing sides of the first platform 40, thereby capable of pivoting with respect to both the first platform 40 and the suspension structure 2 as the first platform 40 pivots between the stowed and working positions.
  • the platform assembly 4 may include only the first platform 40, or the first platform 40 and a single second platform 41, among other possible embodiments.
  • the first platform may pivot with respect to the suspension structure 2 to the stowed position as shown in Figure 2
  • the second platforms 41 pivot with respect to the first platform to their stowed positions adjacent opposing sides of the suspension structure 2 as shown in Figure 3
  • the suspension apparatus 1 is provided with a locking means with which the platform assembly 4 may be locked in the stowed position.
  • the first and second platforms 40 and 41, respectively, are preferably each covered by a grating panel 44 providing a surface to support a user in the working position.
  • the grating panels have been omitted from Figures 2 and 3 for clarity. Although the use of grating panels is preferred due to their relatively light weight, non-slip, and free-draining characteristics, it will be appreciated that any alternative surface, such as aluminium diamond plate, for example, may be used instead.
  • the underside of the platform assembly 4 is shown to be supported by a plurality of propping means 43 provided between the suspension structure 2 and the platform assembly 4. These are preferably in the form of telescopic rods as shown in the preferred embodiment of the drawings.
  • the propping means 43 provides sufficient support to the platform assembly 4 to support the combined weight of the platform assembly 4, at least one user, and any tools or equipment which might be required, including an inflatable craft and pump, for example.
  • the access apparatus 1 should be capable of supporting working loads of at least 200kg upon the platform assembly 4.
  • the platform assembly 4 may also be provided with support cables 45 adapted to support the platform assembly 4 under tension in the working position.
  • the propping means 43 are preferably coupled at both ends to fulcrums provided on the suspension structure 2 and platform assembly 4.
  • the fulcrum coupling allows the telescopic rods or propping means 43 to swivel or pivot with respect to the fulcrums 24 as the platform assembly is moved between the stowed and working positions.
  • the fulcrums 24 are preferably provided at the lower end of the suspension structure 2 and on an outer edge of the platform assembly 4 for maximum strength.
  • the first coupling 60 is one example of a simple coupling to permit this movement.
  • a second coupling 61 permitting movement of the propping means 43 in three dimensions is required to permit the more complex movement of the second platform 41 about two independent axes.
  • the second coupling 61 may comprise a ball joint, for example.
  • the fulcrum 24 of Figure 6 provides first and second couplings 60 and 61, respectively, in a single mounting plate suitable for mounting to the lower left hand of the suspension structure 2 as shown in Figures 1-4 .
  • the second coupling 61 of the fulcrum 24 projects from the suspension structure 2 at an angle of between 22.5° and 67.5° towards the corresponding fulcrum provided on the platform assembly 4. Ideally, however, this angle is substantially equal to 45°, as shown, substantially coaxial with the propping means 43 when the platform assembly 4 is in the working position in order to minimise shearing forces on the coupling.
  • Corresponding couplings provided on fulcrums of the platform structure preferably also have this angle.
  • the first platform 40 and second platforms 41 preferably have a width substantially equal to that of the corresponding sides of the suspension structure 2 when the platform assembly is in the stowed position, thereby minimising overhang as shown in Figure 3 .
  • the suspension apparatus 1 in the stowed position in use may therefore be inserted and extracted through an access opening 50 which is relatively small with respect to the area of the platform assembly when in the working position.
  • the platform assembly 4 is preferably also provided with an engagement means to support a safety barrier.
  • the safety barrier is preferably in the form of a number of barrier posts 46 provided about the edge of the platform assembly 4, most preferably at the corners thereof, and supporting a safety handrail, cable or rope therebetween.
  • the safety rope 47 is preferably provided along three sides of the platform assembly 4.
  • the platform assembly 4 preferably includes a fixed platform 42 provided within the suspension structure 2.
  • the fixed platform 42 provides a platform for the user to stand on as the first and second platforms 40 and 41 are lowered from the stowed position to the working position.
  • a locking mechanism 48 is also shown in Figure 5 , and in more detail in Figure 7 .
  • the locking mechanism 48 consists of a pair of sliding locking bolts which may be extended from the fixed platform 42 to engage with the second platforms 41 when in the working position.
  • the bolt of the leftmost locking mechanism 48 is not shown for clarity, while the rightmost bolt is shown in the extended or locked position.
  • the locking mechanism 48 When engaged, the locking mechanism 48 prevents the platform structure inadvertently pivoting as weight is placed on it.
  • the locking bolts may be retracted to allow the platform structure to pivot.
  • a pair of opposing locking when extended bolts engage with the two second platforms 41, preventing the first platform 40 pivoting upwardly as weight is placed on a second platform 41.
  • the level of liquid stored in the reservoir is lowered to the required level, if necessary. However, in most instances it will not be necessary to lower the liquid level as the distance of the platform below the access opening can be adjusted selecting the rungs 21 to which the collar 32 is attached.
  • the suspension structure 2 is then lowered through an access opening 50 with the platform assembly 4 in the stowed position.
  • the collar 32 is then engaged with the suspension structure 2 by insertion of a pin or bolt through the required rungs 21 and corresponding holes provided in the collar 32.
  • Stabiliser arms 30 may then be engaged with the collar 32 to support the access apparatus 1 suspended through the access opening 50.
  • a user can then climb through the opening collar opening 33 and down the rungs 21 towards the fixed platform 42, then deploy the platform assembly 4 by unlocking it from the stowed position, rotating the second platforms 41 outwardly to be substantially planar with the first platform 40 adjacent the suspension structure 2, then rotating the first and second platforms 40 and 41 to the substantially horizontal working position and locking the platform structure in position using the locking mechanism 48.
  • Barrier posts 46 including a safety rope 47 may then be inserted in the holes provided about the perimeter of the platform assembly 4.
  • the user then has a safe and stable working platform from which a boat may be inflated and deployed, if required.
  • a boat may be inflated and deployed, if required.
  • the depth at which the platform assembly 4 is suspended within the reservoir may be selected, it may not be necessary to raise the water level for inspection of the ceiling of the reservoir. If it is necessary, the above process may be reversed and the apparatus 1 extracted to avoid submersion and corrosion of the apparatus, if desired.
  • the access apparatus 1 is substantially formed from a strong yet lightweight material, such as aluminium, allowing the apparatus to be deployed by hand by one or more users.
  • a vertically suspended access apparatus which has the benefits of providing safer and easier access to an internal void or underlying space. Additionally, the platform may be collapsed and dismantled for transportation and installation or storage elsewhere, providing an economical alternative to installing permanent internal walkways in a covered or underground reservoir which would be susceptible to corrosion and difficult to maintain and inspect.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Ladders (AREA)
EP09152490A 2008-02-11 2009-02-10 Appareil d'accès Withdrawn EP2088258A2 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NZ565887A NZ565887A (en) 2008-02-11 2008-02-11 Access apparatus

Publications (1)

Publication Number Publication Date
EP2088258A2 true EP2088258A2 (fr) 2009-08-12

Family

ID=40677487

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09152490A Withdrawn EP2088258A2 (fr) 2008-02-11 2009-02-10 Appareil d'accès

Country Status (7)

Country Link
US (1) US20100175951A1 (fr)
EP (1) EP2088258A2 (fr)
JP (1) JP2009197579A (fr)
CN (1) CN101538937A (fr)
AU (1) AU2009200511A1 (fr)
CA (1) CA2652929A1 (fr)
NZ (1) NZ565887A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012021065A1 (fr) 2010-08-11 2012-02-16 Beerenberg Corp. As Barrière réglable de bordure

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7779599B2 (en) 2004-03-31 2010-08-24 Safway Services, Llc Articulating work platform support system, work platform system, and methods of use thereof
US8042652B2 (en) * 2008-05-08 2011-10-25 Weir Joe A Tree stand
US10337194B2 (en) 2011-06-29 2019-07-02 Safeway Services, Llc Work platform system configured for use structure with internal cavity, and related methods of assembly and use
EP3095750B1 (fr) * 2015-05-19 2018-07-11 Anco Maritime Activities Ltd. Procédé pour inspecter une salle intérieure d'un navire et/ou y effectuer des travaux
CN105113776B (zh) * 2015-09-18 2017-06-13 武汉一冶钢结构有限责任公司 一种球罐上极内顶部平台的支撑装置及搭建方法
CN107119896A (zh) * 2017-06-15 2017-09-01 南通四建集团有限公司 一种工具式塔吊附墙安装操作平台
CN108442696B (zh) * 2018-03-12 2020-11-06 柳州铁道职业技术学院 一种建筑施工梁架
KR102027845B1 (ko) * 2018-05-17 2019-10-04 삼성중공업 주식회사 접철식 족장 프레임
CN113733021B (zh) * 2021-08-30 2023-05-09 上海卫星工程研究所 嵌套式推进系统的下沉式工装及其构建方法
CN113882647B (zh) * 2021-10-18 2023-07-25 中国建筑第八工程局有限公司 自主爬升操作平台及其施工方法
CN115949223B (zh) * 2022-11-24 2025-04-22 国网江苏省电力有限公司徐州供电分公司 一种配电线路施工用配电架及其使用方法
CN116354286B (zh) * 2023-03-27 2026-03-13 中国长江电力股份有限公司 卷扬式启闭机导向滑轮检修平台及安装方法
US20250223816A1 (en) * 2024-01-05 2025-07-10 Klimer Platforms Inc. Mast climbing work platform with translating function and related method

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US434462A (en) * 1890-08-19 Ladder
US1013751A (en) * 1911-10-10 1912-01-02 Thomas Francis Dougherty Balcony for fire-ladders.
US2881028A (en) * 1957-10-11 1959-04-07 James D Baird Ladder platform
US3166154A (en) * 1962-02-02 1965-01-19 Titzel Engineering Inc Portable scaffolds and work towers
US3318415A (en) * 1966-03-15 1967-05-09 Sr Aldis J Christie Platform for ladders
US3888062A (en) * 1974-02-14 1975-06-10 Vulcan Engineering Company Work tower for relining metallurgical vessels
CA1033372A (fr) * 1976-06-09 1978-06-20 Angus C. H. Martin Plateforme pliante pour forage sur echasses
US4286721A (en) * 1977-08-19 1981-09-01 Simon Engineering Dudly Limited Access equipment
FR2623787B1 (fr) * 1987-11-27 1990-05-11 Otis Elevator Co Procede de montage d'un ascenseur ou monte-charge au sein d'un batiment, gabarits de montage utilises, ascenseur ou monte-charge obtenu
US5007501A (en) * 1989-09-01 1991-04-16 Baston Peter J Apparatus for facilitating the internal inspection and repair of large pressure vessels
US5311966A (en) * 1991-08-30 1994-05-17 Glnx Corporation Scaffold system
US5503033A (en) * 1993-08-10 1996-04-02 Tric Holdings Limited Method and servicing interior of large container and service apparatus
US5533592A (en) * 1994-11-28 1996-07-09 Lamoureux; Laurent J. Expandable scaffold for hopper
US6186273B1 (en) * 1997-02-19 2001-02-13 Metro Machine Corporation Self-contained staging system for cleaning and painting bulk cargo holds
CA2375176C (fr) * 2002-03-08 2005-05-24 Tony Garofalo Cadre d'alignement et de stabilisation pour l'erection d'une plate-forme portative a usages multiples
US6830127B2 (en) * 2002-08-29 2004-12-14 Robert Aaron Johnson Pipeline construction safety platform
GB0500619D0 (en) * 2005-01-13 2005-02-23 Severfield Rowen Plc Improvements relating to construction
US20070256892A1 (en) * 2006-05-08 2007-11-08 Breedlove Michael G Sr Ladder stand with platform hoist and method of assembling same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012021065A1 (fr) 2010-08-11 2012-02-16 Beerenberg Corp. As Barrière réglable de bordure

Also Published As

Publication number Publication date
JP2009197579A (ja) 2009-09-03
US20100175951A1 (en) 2010-07-15
AU2009200511A1 (en) 2009-08-27
CA2652929A1 (fr) 2009-08-11
CN101538937A (zh) 2009-09-23
NZ565887A (en) 2010-08-27

Similar Documents

Publication Publication Date Title
EP2088258A2 (fr) Appareil d'accès
KR101707403B1 (ko) 화물창 점검용 갠트리 타워 크레인
CA2910381C (fr) Methode et appareil d'assemblage d'une tour d'etayage
US20060219478A1 (en) Construction
AU2012226370B2 (en) Suspended scaffolding system
US20130233646A1 (en) Mobile and Stabilizing Scaffold Apparatus
CN103597163A (zh) 井架设备
US20200109039A1 (en) Foldable Personnel Basket For A Crane
GB2459181A (en) Safety work platform
US8424643B1 (en) Boat work platform
EP0142963A2 (fr) Echafaudage
GB2230814A (en) Suspended staging: escape apparatus
US20180370781A1 (en) Foldable Personnel Basket For A Crane
KR20170000647U (ko) 격납고용 접철식 플랫폼
KR101707404B1 (ko) 화물창 점검용 갠트리 타워 크레인의 설치방법
RU2231594C1 (ru) Буровая платформа
JP3069398U (ja) マンホ―ル用梯子
JP2003278379A (ja) 足場用取付装置
NL1041774B1 (en) Foldable staircase.
KR200493150Y1 (ko) 잭업리그 레그용 곤돌라 장착장치
KR20160016132A (ko) 작업 플랫폼 및 작업 플랫폼 사용 방법
KR101725373B1 (ko) 선박 건조를 위한 플랫폼의 통행용 브릿지를 갖춘 사이드 오프닝의 통행구조물
RU51062U1 (ru) Модульная каркасная система
GB2419915A (en) Scaffold safety structures
CA2141241A1 (fr) Plate-forme d'acces suspendue repliable

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA RS

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Effective date: 20120620