EP2639382A1 - Arbeitsplattform - Google Patents

Arbeitsplattform Download PDF

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Publication number
EP2639382A1
EP2639382A1 EP13447004.6A EP13447004A EP2639382A1 EP 2639382 A1 EP2639382 A1 EP 2639382A1 EP 13447004 A EP13447004 A EP 13447004A EP 2639382 A1 EP2639382 A1 EP 2639382A1
Authority
EP
European Patent Office
Prior art keywords
work platform
work
lateral support
base
floor
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Withdrawn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
EP13447004.6A
Other languages
English (en)
French (fr)
Inventor
Paul Dechamps
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.)
Demat Comm V
Original Assignee
Demat Comm V
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 Demat Comm V filed Critical Demat Comm V
Publication of EP2639382A1 publication Critical patent/EP2639382A1/de
Withdrawn legal-status Critical Current

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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
    • E04G1/00—Scaffolds primarily resting on the ground
    • E04G1/34—Scaffold constructions able to be folded in prismatic or flat parts or able to be turned down
    • 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
    • E04G1/00—Scaffolds primarily resting on the ground
    • E04G1/18—Scaffolds primarily resting on the ground adjustable in height
    • E04G1/20—Scaffolds comprising upright members and provision for supporting cross-members or platforms at different positions therealong

Definitions

  • the present invention concerns a work platform.
  • the present invention concerns a work platform which is designed for carrying people while working on a certain height in relation to the ground, and whereby in particular the work platform is moveable and adjustable between a collapsed position in which elements of the work platform are put close together and one or several expanded positions, in which elements of the work platform are moved further away from one another.
  • Such a work platform according to the invention is typically designed for carrying out all kinds of works related to interior decoration, such as plastering, painting, carpentry work, electrical works and so on, but such a work platform according to the invention is moreover also specifically designed to perform work outdoors, such as in the garden, for example pruning hedges or trees and the like.
  • elevation workers usually with a hydraulic or mechanical drive and carried out with a work floor for supporting persons, which is moveable in relation to a basis, for example by means of a scissor mechanism, a telescopic arm or a hinged arm.
  • a first disadvantage of these known rolling scaffolds is that they are difficult to move, as they are provided to that end with four small, identical wheels on their corners, typically having a diameter of some 125 mm to 200 mm, as a result of which such rolling scaffold is difficult to roll, especially on uneven terrain or on sites where waste material or the like often hampers the rolling of the wheels.
  • US 4,000,789 describes a lifting device whereby a base is provided with two folding legs, one on each crosscut end of the rectangular base, and further a platform which can be moved up and down between the folding legs by means of a cable and pulley system.
  • the platform is set in motion by rolling the cables on or off a drum which is driven by means of an electric motor.
  • the present invention aims to remedy one or several of the aforesaid disadvantages of the known work platforms, and possibly also other disadvantages.
  • the invention concerns a work platform designed for carrying people while working on a certain height in relation to a basis, whereby the work platform is adjustable between a collapsed position in which elements of the work platform are put close together and one or several expanded positions in which elements of the work platform are moved further away from one another, whereby the work platform comprises at least the following elements:
  • a first major advantage of such a work platform according to the invention consists in that the work floor can be moved up and down in a very simple and particularly safe manner.
  • the construction offers the advantage that the work platform can be folded together in an extremely compact manner, whereby the risk of folding driving components incorrectly is prevented.
  • a work platform according to the invention has the advantages of an elevation worker, as well as of a known rolling scaffold, but not the disadvantages.
  • the work platform 1 is designed for carrying people while working on a certain height H in relation to the ground 2.
  • the work platform 1 is hereby built of several elements which can be put close together in a collapsed position on the one hand, as represented in figure 1 , and which can be moved further away from one another in several expanded positions on the other hand, two of which are represented in figures 2 to 5 .
  • the work platform 1 has a base 3 designed to rest on the ground 2, as well as a work floor 4 on which, in a expanded position of the work platform 1, a person can take place.
  • Moving certain elements of the work platform 1 close together and away from one another can be done in two fundamentally different ways, by folding up the work platform 1 into the collapsed position and by unfolding it into an expanded position of use on the one hand, and by moving the work floor 4 in the unfolded position of use up and down in relation to the base 3 on the other hand.
  • the base 3 is a rectangular base 3 having a length L, typically 2 m, and a width B, typically 0,70 m, in the shape of a frame 5 which is built of a pair of longitudinal tubes 6, forming a pair of longitudinal side edges 7 of the base 3 and which are connected by means of a pair of outer transverse tubes 8, which outer transverse tubes 8 form a pair of crosscut edges 9 of the base 3, in particular on the far ends 10 of the longitudinal tubes 6, which far ends 10 also form the corners 10 of the rectangular base 3.
  • tubes are mentioned here and further down, it is clear that they can be for example steel and/or aluminium profiles.
  • the longitudinal tubes 6 are further connected to one another by means of intermediate transverse tubes 11.
  • the tubes of the frame 5 are preferably made of a light material and have a round or square section.
  • each lateral support 12 or 13 has a fixed standing part on the one hand, fixed standing parts 14 and 15 respectively, and a hinged part on the other hand, hinged parts 16 and 17 respectively, which hinged parts 16 and 17 are rotatable around a shaft XX', YY' respectively, which is parallel to the crosscut edge 9 concerned.
  • Every hinged part 16 and 17 can hereby be rotated between a lowered position, whereby the hinged part 16 or 17 of the lateral support 12 or 13 concerned is provided parallel to the rectangular base 3, corresponding to the collapsed position as represented in figure 1 , and a standing position, in which every hinged part 16 or 17 of the lateral support 12 or 13 concerned is transverse to the rectangular base 3 and situated in the plane of the adjacent fixed part 14 or 15, corresponding to the expanded position of use as represented in figures 2 to 5 .
  • the lateral supports 12 and 13 are realised by fixing a hinged profile 18, i.e. two profile parts which are mutually hinge-mounted, with one of its far ends 19 on each corner 10 of the rectangular base 3, whereby a cross connection 20 is provided parallel to each crosscut edge 9 between the two adjacent profiles 18.
  • Every profile 18 is further provided with a hinge 21, whereby, in the embodiment of the figures, the hinge 21 of the profiles 18 which are part of the first lateral support 12 are situated at a distance C from the base 3 which is smaller than the distance D between a hinge 21 of the second lateral support 13 and the base 3.
  • the difference between the distances C and D corresponds to the width E of a profile 18, such that the second lateral support 13 can be folded over the first lateral support 12.
  • the work floor 4 is surrounded by a railing 22, typically having a height of 110 cm, which is expandable and partially extendable, from a folded and retracted position in which parts of the railing 22 are provided against the work floor 4, as represented in figure 1 , into an expanded and extended position of use, in which the parts of the railing 22 extend transversely to the work floor 4, as represented in figures 2 to 5 .
  • a railing 22 typically having a height of 110 cm, which is expandable and partially extendable, from a folded and retracted position in which parts of the railing 22 are provided against the work floor 4, as represented in figure 1 , into an expanded and extended position of use, in which the parts of the railing 22 extend transversely to the work floor 4, as represented in figures 2 to 5 .
  • the railing 22 is of course also collapsible from the expanded position into the folded position.
  • the work floor 4 is situated between the rectangular base 3 and the lowered hinge-mounted lateral supports 12 and 13.
  • the distance C, or the height C of the standing fixed part 14 of the first lateral support 12 corresponds to the thickness of the work floor 4 including the railing 22 in the folded position, such that the work platform 1 can be made extremely compact in the collapsed position, typically having a height F of some 0.65 m.
  • the work floor 4 can be moved up and down in relation to the base 3 over or between the lateral supports 12 and 13 when they have been put in the expanded position of use.
  • the profiles 18 to this end have a C-shaped section with an internal toothing working in conjunction with gear wheels provided on the angles of the work floor 4.
  • gear wheels are directly or indirectly driven by electric driving means provided under the work floor 4 and which consist of an electric motor, powered by a preferably rechargeable battery power supply, for example of 24 V, and of which one or several drive shafts drive the gear wheels directly or via one or several reduction gear boxes.
  • electric driving means provided under the work floor 4 and which consist of an electric motor, powered by a preferably rechargeable battery power supply, for example of 24 V, and of which one or several drive shafts drive the gear wheels directly or via one or several reduction gear boxes.
  • the work platform 1 according to the invention as represented in figures 1 to 5 further has a very interesting feature in that it is provided with only one wheel 23 to move the work platform 1, which wheel 23 is provided centrally on a crosscut edge 9 of the base 3 and protrudes outside the contours of the base 3 on a structure provided to that end.
  • the length L' of the work platform 1 with the wheel 23 included preferably amounts to no more than 2.5 m, however.
  • the wheel 23 has a rather large diameter, at least compared to the wheels which are common in the known rolling scaffolds, for example a diameter of some 400 mm, comparable to the diameter of the wheel of a barrow.
  • Such a wheel 23 with a large diameter is advantageous in that the work platform 1 can be easily wheeled over obstacles and is also easy to move.
  • the wheel 23 is also leak-proof, making it very suitable for use on building sites or in gardens and the like, and it is detachable from the base 3, for example to reduce the space occupied during the transport of the work platform 1.
  • a pull handle 24 to lift the work platform 1 on the crosscut edge 9 concerned so as to be able to reposition the work platform 1 with the wheel 23.
  • the work platform 1 is made very light, and it has a weight of for example maximally 85 kg.
  • the work platform 1 is hereby moveable with the wheel 23, in an expanded position of the work platform 1, as well as in the collapsed position.
  • the intention is to put it back down, whereby the work platform 1 rests on the wheel 23 on one crosscut edge 9 and rests on a pair of support feet 25 on the opposite crosscut edge 9, provided on this crosscut edge 9.
  • the work platform 1 must be further stabilized thereafter by means of support legs 26 provided on each corner 10 of the rectangular base 3, whereby the support legs 26 are axially adjustable in a direction perpendicular to the plane of the rectangular base 3, preferably over some 30 cm.
  • the support legs 26 can be rotated between a position close to the work platform 1, as represented in figure 1 , and a position further away from the work platform 1, as is the case in the other figures.
  • the work floor 4 is provided with a plinth 27 of for example 10 or 15 cm high in the parts of the railing.
  • securing means can be provided, whereby the drive means are not activated as long as the railing 22 is not correctly expanded and a door 28 in the railing 22 is not correctly closed.
  • FIG. 1 Another important aspect of a work platform 1 according to the invention as represented in figures 1 to 5 which promotes the safety, is that all its components are permanently connected to one another, more specifically in the collapsed position as well as in an expanded position and during a transition between these positions.
  • the construction of the work platform 1 as a whole automatically forces the user to a correct use.
  • Figures 6 to 13 represent an alternative and even more preferred embodiment of a work platform 1 according to the invention.
  • This embodiment mainly differs from the embodiment as represented in figures 1 to 5 and as discussed above in that the work platform 1 is made such that a higher working height can be reached on the one hand, and in that the wheel set and its positioning are different.
  • Figure 6 represents a work platform 1 with a base 3 which is designed to rest on the ground 2, as well as a work floor 4 on which, in an expanded or unfolded position of the work platform 1 as represented in figure 6 , a person can take place.
  • the lateral supports 12 and 13 are realised by providing a hinged profile 18 at each corner 10 of the rectangular base 3.
  • Each hinged profile 18 is built of two profile parts which are mutually hinge-mounted by means of hinges 21, and whereby one far end 19 of each hinged profile 18 is each time fixed to the base 3.
  • each hinged profile 18 is provided with an attachable extension profile 18B here.
  • cross connections 20A to 20D are provided between the two adjacent profiles 18 with extension profiles 18B, more specifically two cross connections 20A and 20B between the two adjacent hinged profiles 18, and two cross connections 20C and 20D between the two adjacent attachable extension profiles 18B.
  • Each set of two attachable extension profiles 18B, mutually connected by means of the cross connections 20C and 20D, is further also named lateral support extension 12B and 13B.
  • the two lateral support extensions 12B and 13B, when they are put on top of the lateral supports 12 and 13, are mutually connected by means of a rod element 29 which is preferably directed slantingly in relation to the work floor 4.
  • the rod element 29 and at least two attachable extension profiles 18B are provided with appropriate coupling means 30, at an appropriate height difference.
  • the attachable extension profiles 18B are further substantially in accordance with the profiles 18, at least especially regarding the characteristics related to the capacity of the work floor 4 to move up and down in relation to the base 3 over or between the lateral supports 12 and 13, at least when they are put in the unfolded position of the work platform 1 for use.
  • the profiles 18 and also the attachable extension profiles 18B have a C-shaped section.
  • profiles 18 and 18B with C-shaped sections are characterised by a connecting wall 31, two side walls 32A and 32B oriented substantially transversely thereto which are each provided, at a distance from the connecting wall 31, with legs 33A and 33B directed towards each other.
  • One of the legs 33A or 33B directed towards one another is provided with a toothing 34 or tooth-shaped cut-out 34 on its free edge, which toothing 34 can work in conjunction with gear wheels 35 provided on the angles of the work floor 4.
  • such a gear wheel 35 is provided on a shaft 36, and on either side of the gear wheel 35 is provided a round disk 37A and 37B whose diameter is larger than the largest diameter of the gear wheel 35 concerned.
  • the shaft 36 goes further than the outermost disk 37B.
  • a sliding block 38 for example made of an appropriate plastic, whose dimensions and placement in relation to the gear wheel 35 are appropriate to ensure some further positioning.
  • the width of the sliding block 38 corresponds to the internal distance between the opposite side walls 32A and 32B.
  • the connecting wall 31 is provided with cut-outs 39 here, more specifically in order to restrict the weight.
  • Figure 8 shows an elevation of the work floor 4 of the work platform 1 according to a direction indicated by arrow F8 in figure 6 , i.e. a bottom view in a condition of use.
  • the gear wheels 35 are driven here by electric drive means provided under the work floor 4 and which consist of an electric motor 40, powered by a preferably rechargeable battery power supply which is not represented, for example of 24 V.
  • the motor shaft of the electric motor 40 is coupled to a first transmission 41 which is provided with two output shafts 42A and 42B.
  • Each of the shafts 42A and 42B extends into a second transmission 43A and 43B, each provided near the crosscut side of the work floor 4 which leans against the lateral support 12 or 13.
  • Each second transmission 43A and 43B is provided with two output shafts 36 on which are provided a gear wheel 35, two surrounding disks 37 and a sliding block 38.
  • Figures 9 and 10 show an elevation of the work platform according to a direction indicated by arrow F9, by arrow F10 respectively in figure 6 .
  • the work platform 1 according to the present embodiment as represented in figures 6 to 13 , are provided with four little casters 44, one in each angle.
  • the two casters 44 provided on the crosscut edge 9 of the base 3, away from the pull handle 24, are replaced by two larger wheels 45 which are represented here as well for clarity's sake, but whereby it is clear that if they are provided, the nearby casters 44 can be omitted.
  • the function and the characteristics of the larger wheels 45 correspond to the wheel 23 as provided in the embodiment according to figures 1 to 5 .
  • the two smaller casters 44 provided on the side of the pull handle 24 take the place and function of the support feet 25, with the difference that movability is also offered without lifting the handle 24, for example on a flat and/or hard basis.
  • the pull handle 24 can then be used to move the work platform 1.
  • Both types of wheels 44 and 45 have a broad support and will not necessarily serve as a support when setting up the work platform 1.
  • the work platform 1 preferably mainly rests on the provided swivelling support legs 26.
  • Figure 11 shows the part indicated by F11 in figure 10 in greater detail and to a larger scale.
  • the detail view illustrates how a hinged profile 18 consists of two profile parts which are mutually hinge-mounted, more specifically by means of the hinge 21.
  • locking and tensioning means 46 in this case a straining clamp 46.
  • Figure 12 analogous to figure 6 , shows a view in perspective of the work platform 1, but the work floor 4 is put in a higher position here.
  • the shape of the cam 49 is such that blocking during upward movement and automatic withdrawal during downward movement is obtained.
  • the cam 49 is provided with an overall rounded contact surface 50, and with an angular cut-out 51 on the top side.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Forklifts And Lifting Vehicles (AREA)
EP13447004.6A 2012-03-14 2013-02-20 Arbeitsplattform Withdrawn EP2639382A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE2012/0179A BE1020525A3 (nl) 2012-03-14 2012-03-14 Werkplatform.

Publications (1)

Publication Number Publication Date
EP2639382A1 true EP2639382A1 (de) 2013-09-18

Family

ID=47843222

Family Applications (1)

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EP13447004.6A Withdrawn EP2639382A1 (de) 2012-03-14 2013-02-20 Arbeitsplattform

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EP (1) EP2639382A1 (de)
BE (1) BE1020525A3 (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015117615A1 (en) * 2014-02-04 2015-08-13 Jesper Ryberg Lonardi Hoist device for a scaffold
CN108202313A (zh) * 2017-11-23 2018-06-26 常熟简尚信息科技有限公司 一种新颖型的电力电缆维护设备
CN108202314A (zh) * 2017-11-23 2018-06-26 常熟简尚信息科技有限公司 一种改进型的电力电缆维护设备
CN108203067A (zh) * 2017-11-23 2018-06-26 常熟简尚信息科技有限公司 一种新型的电力电缆维护设备
CN109346982A (zh) * 2018-10-30 2019-02-15 国网山东省电力公司巨野县供电公司 一种电杆攀登维修装置
CN113512956A (zh) * 2021-07-23 2021-10-19 中铁上海工程局集团有限公司 一种桥梁建筑用具有防护结构的施工平台
CN113802824A (zh) * 2021-10-13 2021-12-17 广东一新长城建筑集团有限公司 一种装配式建筑用升降装置及其应用于该升降装置的施工方法
CN114156769A (zh) * 2021-10-26 2022-03-08 国网宁夏电力有限公司中卫供电公司 一种用于带电作业的平台
CN116374916A (zh) * 2023-06-07 2023-07-04 山东高原油气装备有限公司 一种用于钻机防喷器检维修升降平台装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US467096A (en) * 1892-01-12 John harper
US4000789A (en) 1976-02-18 1977-01-04 Edward Engel Portable scaffold
GB2067512A (en) * 1980-01-16 1981-07-30 Emmerson D Improvements in or relating to platform towers
EP0147731A2 (de) * 1983-12-20 1985-07-10 Salvador Pujol Barcons Arbeitsbühne für den Bau
DE8915645U1 (de) * 1989-10-02 1991-04-18 Pfeifer, Johann B., 6530 Bingen Montagegerüst mit stufenlos höhenverstellbarer Hebebühne
US5310018A (en) * 1992-12-17 1994-05-10 Lahaie Jean J Scaffold

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US467096A (en) * 1892-01-12 John harper
US4000789A (en) 1976-02-18 1977-01-04 Edward Engel Portable scaffold
GB2067512A (en) * 1980-01-16 1981-07-30 Emmerson D Improvements in or relating to platform towers
EP0147731A2 (de) * 1983-12-20 1985-07-10 Salvador Pujol Barcons Arbeitsbühne für den Bau
DE8915645U1 (de) * 1989-10-02 1991-04-18 Pfeifer, Johann B., 6530 Bingen Montagegerüst mit stufenlos höhenverstellbarer Hebebühne
US5310018A (en) * 1992-12-17 1994-05-10 Lahaie Jean J Scaffold

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015117615A1 (en) * 2014-02-04 2015-08-13 Jesper Ryberg Lonardi Hoist device for a scaffold
CN106255788A (zh) * 2014-02-04 2016-12-21 杰斯珀·赖伯格·洛纳尔迪 用于支架的提升机设备
CN108202313A (zh) * 2017-11-23 2018-06-26 常熟简尚信息科技有限公司 一种新颖型的电力电缆维护设备
CN108202314A (zh) * 2017-11-23 2018-06-26 常熟简尚信息科技有限公司 一种改进型的电力电缆维护设备
CN108203067A (zh) * 2017-11-23 2018-06-26 常熟简尚信息科技有限公司 一种新型的电力电缆维护设备
CN109346982A (zh) * 2018-10-30 2019-02-15 国网山东省电力公司巨野县供电公司 一种电杆攀登维修装置
CN109346982B (zh) * 2018-10-30 2020-10-23 国网山东省电力公司巨野县供电公司 一种电杆攀登维修装置
CN113512956A (zh) * 2021-07-23 2021-10-19 中铁上海工程局集团有限公司 一种桥梁建筑用具有防护结构的施工平台
CN113802824A (zh) * 2021-10-13 2021-12-17 广东一新长城建筑集团有限公司 一种装配式建筑用升降装置及其应用于该升降装置的施工方法
CN114156769A (zh) * 2021-10-26 2022-03-08 国网宁夏电力有限公司中卫供电公司 一种用于带电作业的平台
CN116374916A (zh) * 2023-06-07 2023-07-04 山东高原油气装备有限公司 一种用于钻机防喷器检维修升降平台装置
CN116374916B (zh) * 2023-06-07 2023-08-29 山东高原油气装备有限公司 一种用于钻机防喷器检维修升降平台装置

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