EP1812333A1 - Extendable working platform, particularly for a personnel lift - Google Patents

Extendable working platform, particularly for a personnel lift

Info

Publication number
EP1812333A1
EP1812333A1 EP05810873A EP05810873A EP1812333A1 EP 1812333 A1 EP1812333 A1 EP 1812333A1 EP 05810873 A EP05810873 A EP 05810873A EP 05810873 A EP05810873 A EP 05810873A EP 1812333 A1 EP1812333 A1 EP 1812333A1
Authority
EP
European Patent Office
Prior art keywords
platform portion
profiles
fixed
moveable
sides
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP05810873A
Other languages
German (de)
French (fr)
Other versions
EP1812333B1 (en
Inventor
Lucas Rijnders
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.)
Weenink Ted
Original Assignee
Weenink Ted
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 Weenink Ted filed Critical Weenink Ted
Publication of EP1812333A1 publication Critical patent/EP1812333A1/en
Application granted granted Critical
Publication of EP1812333B1 publication Critical patent/EP1812333B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • E04G1/00—Scaffolds primarily resting on the ground
    • E04G1/15—Scaffolds primarily resting on the ground essentially comprising special means for supporting or forming platforms; Platforms
    • E04G2001/157—Extensible platforms, e.g. telescopic platforms

Definitions

  • the present invention relates to an extendable working platform, in particularly for a personnel lift, comprising a frame, which is connected to the lifting mechanism of the personnel lift, said frame being connected to a fixed oblong platform portion, which has rectilinear guides for guiding a moveable platform portion, which can be extended from a retracted, the fixed platform portion overlapping, position to a extended position in which the moveable platform portion projects from the fixed platform portion.
  • a personnel lift consists of a working platform which can be raised by means of a lifting mechanism, such as a scissor arm arrangement or a suitable telescopic hydraulic lift mechanism, to enable the personnel to perform their jobs.
  • a lifting mechanism such as a scissor arm arrangement or a suitable telescopic hydraulic lift mechanism
  • the working platforms are usually extendable in the longitudinal direction. This is especially important for operations over large surfaces within a limited time, such as cleaning windows and painting or cleaning facades.
  • the working platforms are extendable in a very limited way. This is due to the fact that in the present known constructions the moveable platform portion is arranged in a guide which is connected to the fixed platform portion.
  • the rectilinear guides are formed by I-profiles which are mounted on the longitudinal sides of the fixed platform portion, the inner sides of said I-profiles carrying an upper moveable platform portion situated above said fixed platform portion, and the outer sides of said I-profiles carrying a lower platform portion situated under said fixed platform portion, both moveable platform portions having almost the same length as the fixed platform portion and said frame being connected to the fixed platform portion via the top sides of the said I- profiles.
  • a working platform which has an extendable platform portion both under and above the fixed platform portion, so that an extension can be achieved at both ends of the fixed platform portion, said extension being somewhat smaller than the length of the fixed platform portion.
  • this arrangement according to the invention allows an extension which is twice as large. Furthermore a lighter and compacter construction can be achieves because both moveable platform portions are moveable arranged in the same guides.
  • the frame consists of one or more substantially C-shaped supports, which extend transversely under the working platform and its free ends are connected to the top sides of the said I-profiles. In this way the working platform can be supported on a lifting mechanism without restricting the moveability of the lower platform portion.
  • Figure 1 shows a partial cross section of the working platform according to the present invention.
  • Figure 2 shows a schematic side view of the working platform according to the invention in the totally extended position.
  • the working platform consists of a fixed platform portion 1, which in fact is formed by a rectangular oblong floor plate 2, which at the under side is provided with a reinforcement frame 3.
  • a reinforcement frame 3 On both longitudinal sides of the floor plate 2 an I-profile 4 is mounted on the floor plate 2.
  • a railing 5 is arranged, of which in this figure only a part of an upright is visible.
  • an upper moveable platform portion 6 is arranged, which is carried in the inner sides of said I-profiles by means of guiding rollers 7, which are connected to the respective sides of said moveable platform portion.
  • the moveable platform portion 6 is situated at a small distance above the fixed platform portion 1, and is also formed by un upper floor plate 8 and an reinforcement frame 9 arranged hereunder, which also supports the guiding rollers 7.
  • the floor plate 8 has at its longitudinal sides adjacent to the I-profiles upstanding walls 8a, which provide a stiffening for the floor plate 8 and also serve as support for a railing 10 which is arranged at its inner side and so is adjacent to the railing 5 of the fixed platform portion 1.
  • a lower moveable platform portion 11 is arranged, which also consists of a floor plate 12 having a reinforcement frame 13 at its under side.
  • the floor plate 12 extends sideward beyond the fixed platform portion 1 and has upstanding side walls 12a which extend until the respective I-profiles 4.
  • Near the ends of said upstanding walls guiding rollers are mounted by means of shafts, said rollers running in the outer side of the respective I-profiles 4.
  • each upstanding wall 12a is an in inwards directed flange 12b, which is situated in the outer side of the said I-profile 4, which flange 12b serves as a race for guiding rollers 14', which are mounted to the vertical body part of the respective I- profile.
  • the lower moveable working platform is in this way guided in the outer side of both I-profiles by means of guiding rollers 14, said guiding rollers 14 being connected to the upstanding wall 12a through shafts, and by means of said guiding rollers 14' being connected to the vertical body part of the concerning I-profiles, the flange portion 12b running over said rollers 14'.
  • a railing 15 is arranged, whereof only a part of an upright is visible. Said railing is thus situated at the outer side of the railing 5 of the fixed platform portion 1.
  • supports 16, 16' are arranged near both ends of the fixed platform portion.
  • Said supports are generally C-shaped and extend substantially under the working platform, while both end of the C each are connected to the upper side of the respective I-profile 4.
  • the supports each consist of a beam 16a , which is situated at some distance under the lower platform portion 11 at right angles to its longitudinal direction, said beam at both ends having upstanding beams 16b extending at right angles upwards along the sides of the working platform and these upstanding beams are at theirs ends provided with end beams 16c, extending at right angles to the beams 16b and directed inwards.
  • the end beams 16c each rest on the top of the respective I-profile and is connected thereto. In this way the whole working platform is supported by the beams 16a, without restricting the moveability of the platform portions 6 and 11. It is to be understood that the railing 15 of the lower platform portion 11 is constructed in such a way that it will not collide with the said supports.
  • Figure 2 shows a side view of the working platform according tot the invention in a totally extended position.
  • the upper moveable platform portion 6 has been moved to the right and the lower moveable platform portion 11 has been moved to the left.
  • the working platform is usually equipped with means for controlling the moveable platform portions. This may be realised electrical or manual.
  • the moveable platform portions may be coupled to one another, for example by means of cables which are guided over pulleys, so that both moveable platform portions can be moved simultaneously inward and outward. Further the working platform may be provided with locking means in order to be able to lock said moveable platform portions in any desired position.
  • the construction of the platform portion may deviate from the construction as illustrated here.
  • the frame consisting of the supports may be arranged in a different way. Essential is that said frame is connected to the top side of the I-profiles and also provide sufficient space to allow the moveability of the lower platform portion.
  • the working platform may also be used as suspended from cables, said cables being connected to the top sides of the I-profiles through a suitable connection.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
  • Ladders (AREA)
  • Rear-View Mirror Devices That Are Mounted On The Exterior Of The Vehicle (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)

Abstract

Extendable working platform, particularly for a personnel lift, comprising a frame (16, 16'), which is connected to the lift mechanism of the personnel lift, said frame being connected to a fixed oblong platform portion (1) having rectilinear guides for guiding a moveable platform portion, which can be extended from a retracted, the fixed platform overlapping position to an extended position, in which the moveable platform portion projects out of the fixed platform portion. Said working platform being characterised in that said guides being formed by I-profiles (4), which are mounted on the longitudinal sides of the fixed platform portion, the inner sides of said I-pro files carrying un upper moveable platform portion (6) situated above said fixed platform portion , and the outer sides of said I-profiles carrying a lower moveable platform portion (11) situated under the fixed platform portion, The frame consists of C-shaped supports (16, 16') extending beneath said working platform and the free ends of said supports being connected to the top sides of the respective I-profiles (4).

Description

EXTENDABLE WORK PLATFORM, PARTICULARLY FOR A PERSONNEL LIFT
The present invention relates to an extendable working platform, in particularly for a personnel lift, comprising a frame, which is connected to the lifting mechanism of the personnel lift, said frame being connected to a fixed oblong platform portion, which has rectilinear guides for guiding a moveable platform portion, which can be extended from a retracted, the fixed platform portion overlapping, position to a extended position in which the moveable platform portion projects from the fixed platform portion.
For performing operations on a facade or on other elevated places usually personnel lifts are used. A personnel lift consists of a working platform which can be raised by means of a lifting mechanism, such as a scissor arm arrangement or a suitable telescopic hydraulic lift mechanism, to enable the personnel to perform their jobs. In order to enlarge the working surface for the personnel said working platforms are usually extendable in the longitudinal direction. This is especially important for operations over large surfaces within a limited time, such as cleaning windows and painting or cleaning facades. In the known personnel lifts the working platforms are extendable in a very limited way. This is due to the fact that in the present known constructions the moveable platform portion is arranged in a guide which is connected to the fixed platform portion. In the fully extended position of the moveable platform portion there must always be a considerable overlapping of both platform portions in order to achieve a sufficient support for the moveable platform portion. So the current extendable working platforms only allow an extension, which is much smaller than the length of the fixed platform portion.
It is an object of the present invention to provide an arrangement for an extendable working platform for a personnel lift, which can be extended over a considerable larger distance. This object is achieved according to the invention by the fact that the rectilinear guides are formed by I-profiles which are mounted on the longitudinal sides of the fixed platform portion, the inner sides of said I-profiles carrying an upper moveable platform portion situated above said fixed platform portion, and the outer sides of said I-profiles carrying a lower platform portion situated under said fixed platform portion, both moveable platform portions having almost the same length as the fixed platform portion and said frame being connected to the fixed platform portion via the top sides of the said I- profiles.
By these measures a working platform is achieved, which has an extendable platform portion both under and above the fixed platform portion, so that an extension can be achieved at both ends of the fixed platform portion, said extension being somewhat smaller than the length of the fixed platform portion. With respect to the known working platforms this arrangement according to the invention allows an extension which is twice as large. Furthermore a lighter and compacter construction can be achieves because both moveable platform portions are moveable arranged in the same guides.
In a preferred embodiment van the invention the frame consists of one or more substantially C-shaped supports, which extend transversely under the working platform and its free ends are connected to the top sides of the said I-profiles. In this way the working platform can be supported on a lifting mechanism without restricting the moveability of the lower platform portion.
Further preferred feature and details of the present invention will become apparent from the subclaims 2-8.
The invention will be explained with reference to the drawings, in which: Figure 1 shows a partial cross section of the working platform according to the present invention.
Figure 2 shows a schematic side view of the working platform according to the invention in the totally extended position.
As can be seen in figure 1 the working platform according to the invention consists of a fixed platform portion 1, which in fact is formed by a rectangular oblong floor plate 2, which at the under side is provided with a reinforcement frame 3. On both longitudinal sides of the floor plate 2 an I-profile 4 is mounted on the floor plate 2. On top of the I- profiles a railing 5 is arranged, of which in this figure only a part of an upright is visible.
Between said I-profiles 4 an upper moveable platform portion 6 is arranged, which is carried in the inner sides of said I-profiles by means of guiding rollers 7, which are connected to the respective sides of said moveable platform portion. The moveable platform portion 6 is situated at a small distance above the fixed platform portion 1, and is also formed by un upper floor plate 8 and an reinforcement frame 9 arranged hereunder, which also supports the guiding rollers 7. The floor plate 8 has at its longitudinal sides adjacent to the I-profiles upstanding walls 8a, which provide a stiffening for the floor plate 8 and also serve as support for a railing 10 which is arranged at its inner side and so is adjacent to the railing 5 of the fixed platform portion 1. Under the fixed platform portion 1 a lower moveable platform portion 11 is arranged, which also consists of a floor plate 12 having a reinforcement frame 13 at its under side. The floor plate 12 extends sideward beyond the fixed platform portion 1 and has upstanding side walls 12a which extend until the respective I-profiles 4. Near the ends of said upstanding walls guiding rollers are mounted by means of shafts, said rollers running in the outer side of the respective I-profiles 4.
At the upper side of each upstanding wall 12a is an in inwards directed flange 12b, which is situated in the outer side of the said I-profile 4, which flange 12b serves as a race for guiding rollers 14', which are mounted to the vertical body part of the respective I- profile. The lower moveable working platform is in this way guided in the outer side of both I-profiles by means of guiding rollers 14, said guiding rollers 14 being connected to the upstanding wall 12a through shafts, and by means of said guiding rollers 14' being connected to the vertical body part of the concerning I-profiles, the flange portion 12b running over said rollers 14'. In this way a reliable guiding is obtained of the lower moveable working platform 12 in the respective I-profiles 4. At the outer sides of the upstanding walls 12a a railing 15 is arranged, whereof only a part of an upright is visible. Said railing is thus situated at the outer side of the railing 5 of the fixed platform portion 1.
In order to be able to connect the whole working platform, consisting of the three interconnected platform portions, to a lifting mechanism (not shown in the drawings) of a personnel lift, supports 16, 16' are arranged near both ends of the fixed platform portion. Said supports are generally C-shaped and extend substantially under the working platform, while both end of the C each are connected to the upper side of the respective I-profile 4. In fact the supports each consist of a beam 16a , which is situated at some distance under the lower platform portion 11 at right angles to its longitudinal direction, said beam at both ends having upstanding beams 16b extending at right angles upwards along the sides of the working platform and these upstanding beams are at theirs ends provided with end beams 16c, extending at right angles to the beams 16b and directed inwards. The end beams 16c each rest on the top of the respective I-profile and is connected thereto. In this way the whole working platform is supported by the beams 16a, without restricting the moveability of the platform portions 6 and 11. It is to be understood that the railing 15 of the lower platform portion 11 is constructed in such a way that it will not collide with the said supports.
Figure 2 shows a side view of the working platform according tot the invention in a totally extended position. As can be seen in said figure, the upper moveable platform portion 6 has been moved to the right and the lower moveable platform portion 11 has been moved to the left. The working platform is usually equipped with means for controlling the moveable platform portions. This may be realised electrical or manual. The moveable platform portions may be coupled to one another, for example by means of cables which are guided over pulleys, so that both moveable platform portions can be moved simultaneously inward and outward. Further the working platform may be provided with locking means in order to be able to lock said moveable platform portions in any desired position.
It will be clear that the invention is not limited to the embodiment described and illustrated here, but that numerous variants and modifications are possible for a person skilled in the art without departing from the scope of the appended claims. The construction of the platform portion may deviate from the construction as illustrated here. The frame consisting of the supports may be arranged in a different way. Essential is that said frame is connected to the top side of the I-profiles and also provide sufficient space to allow the moveability of the lower platform portion. Alternatively the working platform may also be used as suspended from cables, said cables being connected to the top sides of the I-profiles through a suitable connection.

Claims

1. Extendable working platform, particularly for a personnel lift, comprising a frame, which is connected to the lift mechanism of the personnel lift, said frame being connected to a fixed oblong platform portion, having rectilinear guides for guiding a moveable platform portion, which can be extended from a retracted, the fixed platform portion overlapping position, to an extended position, in which the moveable platform portion projects from the fixed platform portion, characterised in that the rectilinear guides are formed by I-profiles (4) which are mounted on the longitudinal sides of the fixed platform portion (1), the inner sides of said I-profiles carrying an upper moveable platform portion (6) situated above said fixed platform portion, and the outer sides of said I-profiles carrying a lower moveable platform portion (11) situated under the fixed platform portion, both moveable platform portions having almost the same length as the fixed platform portion and said frame (16, 16') being connected to the fixed platform portion via the top sides of the said I-profiles.
2. Working platform according to claim 1, characterised in that said frame consists of one or more substantially C-shaped supports (16, 16'), extending beneath said working platform, the free ends of said supports being connected to the top sides of the respective I-profiles (4).
3. Working platform according to claim 1 or 2, characterised in that each platform portion consists of a floor plate (2, 8, 12) having a reinforcement frame at its under side.
4. Working platform according to claim 3, characterised in that the floor plate (12) of the lower moveable platform portion (11) at its longitudinal sides has upstanding walls (12a), each of said walls extending along the respective outer sides of the fixed platform portion (1) and carrying one or more guiding rollers (14), running in the outer sides of the respective I-profϊle.
5. Working platform according to claim 4, characterised in that the upstanding walls of the lower moveable platform portion each have an end flange (12b) directed to the inner side, which forms a race for guiding rollers (14'), which are rotatably connected to the vertical body of said I-profϊles
6. Working platform according to one or more of the preceding claims 3-5, characterised in that the upper moveable platform portion (6) has upstanding walls (8a) at its longitudinal sides, a railing (10) being arranged at the inner side of said walls.
7. Working platform according one or more of the preceding claims, characterised in that the fixed platform portion has a railing (5) , which is connected to the top sides of the said I-profiles.
8. Working platform according one or more of the preceding claims, characterised in that the lower moveable platform portion has a railing (15), which is connected to the outer sides of the upstanding walls (12a).
EP05810873A 2004-11-15 2005-11-14 Extendable working platform, particularly for a personnel lift Expired - Lifetime EP1812333B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1027507A NL1027507C2 (en) 2004-11-15 2004-11-15 Extendable work platform, in particular for a platform.
PCT/NL2005/000795 WO2006052131A1 (en) 2004-11-15 2005-11-14 Extendable working platform, particularly for a personnel lift

Publications (2)

Publication Number Publication Date
EP1812333A1 true EP1812333A1 (en) 2007-08-01
EP1812333B1 EP1812333B1 (en) 2011-03-02

Family

ID=35056948

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05810873A Expired - Lifetime EP1812333B1 (en) 2004-11-15 2005-11-14 Extendable working platform, particularly for a personnel lift

Country Status (5)

Country Link
EP (1) EP1812333B1 (en)
AT (1) ATE500192T1 (en)
DE (1) DE602005026687D1 (en)
NL (1) NL1027507C2 (en)
WO (1) WO2006052131A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2014361705B2 (en) * 2013-12-09 2017-03-23 Haessler Inc. Vertically elevating mobile work platform

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DE202007005306U1 (en) * 2007-04-11 2008-08-21 Weiss, Franz-Joachim platform
DE102007037976A1 (en) * 2007-08-10 2009-02-12 Alpine Bau Deutschland Ag Variable-length work platform, in particular for climbing equipment
FR2944041B1 (en) * 2009-04-07 2015-05-15 Outinord St Amand PLATFORM ENCORBELLEMENT EQUIPPED WITH AN EXTENSION DEVICE.
KR101042528B1 (en) * 2010-10-14 2011-06-20 주식회사 콘솔에스더블유씨 Builder's Cage with Expansion
GB2489667B (en) * 2011-03-24 2013-02-13 Harsco Infrastructure Services Ltd An extending platform
PL236729B1 (en) * 2017-12-21 2021-02-08 Akademia Gorniczo Hutnicza Im Stanislawa Staszica W Krakowie Mobile platform unit
EP4108625B1 (en) * 2021-06-21 2025-01-01 Bertolotti Rail S.r.l. Platform, particularly for maintenance operations
CN114772480A (en) * 2022-05-17 2022-07-22 中车环境科技有限公司 Rectangular air pipe hoisting device and hoisting method

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GB759187A (en) * 1954-01-20 1956-10-17 Access Equipment Ltd Improvements in or relating to mobile working platforms
FR2583450A1 (en) * 1985-06-17 1986-12-19 Hyvon Raoul Movable and dismantleable lifting scaffolding, device and use
SU1296706A1 (en) * 1985-10-14 1987-03-15 Государственный Ремонтно-Строительный Специализированный Трест "Укрцветметремонт" Expandable hoisted scaffold for repairs of flues
US5301770A (en) * 1992-07-06 1994-04-12 Regan Timothy J Adjustable work platform assembly
IT1308404B1 (en) * 1999-03-03 2001-12-17 Treemme Tecnology Srl EXTENDABLE AERIAL PLATFORM
GB0112746D0 (en) * 2001-05-25 2001-07-18 Dorman Long Access Systems Ltd Rolling Platform

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2014361705B2 (en) * 2013-12-09 2017-03-23 Haessler Inc. Vertically elevating mobile work platform

Also Published As

Publication number Publication date
WO2006052131A1 (en) 2006-05-18
ATE500192T1 (en) 2011-03-15
NL1027507C2 (en) 2006-05-16
DE602005026687D1 (en) 2011-04-14
EP1812333B1 (en) 2011-03-02

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