EP2345623B1 - Système comprenant une plateforme de travail mobile, appareil et dispositif de grue - Google Patents

Système comprenant une plateforme de travail mobile, appareil et dispositif de grue Download PDF

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Publication number
EP2345623B1
EP2345623B1 EP20110397501 EP11397501A EP2345623B1 EP 2345623 B1 EP2345623 B1 EP 2345623B1 EP 20110397501 EP20110397501 EP 20110397501 EP 11397501 A EP11397501 A EP 11397501A EP 2345623 B1 EP2345623 B1 EP 2345623B1
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EP
European Patent Office
Prior art keywords
work platform
mast
frame structure
lifting
frame
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.)
Active
Application number
EP20110397501
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German (de)
English (en)
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EP2345623A1 (fr
Inventor
Pekka Matikainen
Kimmo Koskensalo
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.)
Scanclimber Oy
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Scanclimber Oy
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Application filed by Scanclimber Oy filed Critical Scanclimber Oy
Publication of EP2345623A1 publication Critical patent/EP2345623A1/fr
Application granted granted Critical
Publication of EP2345623B1 publication Critical patent/EP2345623B1/fr
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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

Definitions

  • the invention relates to a system comprising a movable work platform and a lifting device for the manipulation of loads and weights.
  • Aerial access platforms such as elevating work platforms supported by a mast, and structures of them, are known and applied, for example, at various sites of construction and renovation of buildings, as well as when performing various maintenance or repair operations.
  • Work platforms normally comprise a horizontal frame structure, by means of which workers, tools and other equipment and materials needed can be elevated to a desired height for performing work.
  • the work platform is typically solid and elongated, but the work platform may also have a deflected shape, it may comprise protrusions or even have a circular shape, depending on the needs of the worksite.
  • the work platform has a rectangular shape and the flooring belonging to its frame structure is delimited by safety rails. The workers move on the flooring.
  • the work platform is moved along a vertical mast structure comprising of, for example, a lattice structure which normally has a square cross-section.
  • the mast structure remains stationary and it may be free standing, but typically, the mast structure is supported in place by means of fasteners.
  • the mast structure may also be supported at several different points, for example, to a building, by means of fasteners. Yet, the fasteners make it possible that the work platform can move past them up and down along the mast structure.
  • the bottom end of the mast structure may be supported to a particular footing or the like, but the work platform may also be movable, in which case the mast structure stands on a movable base.
  • the movable base is formed, for example, by a carriage on wheels, which can be connected to a hauling vehicle.
  • the movable base comprises several supporting feet whose position can be changed and which support the mast structure when the work platform is in use.
  • mast structures for a single work platform. It is also possible to connect two work platforms, each comprising one mast structure. In this way, it is possible to provide a larger work area or a greater loading capacity.
  • the work platform is moved along the mast structure by means of a lifting and lowering device provided between the mast structure and the work platform, connected to both of them or integrated in the frame structure of the work platform, for example its lifting frame.
  • the lifting and lowering device comprises actuators, for example an electric motor and a transmission that is coupled by means of one or more drive pinions to a gear rack in the mast structure.
  • the pinion ascends along the gear rack, and simultaneously the whole work platform moves along the mast structure.
  • the lifting and lowering device comprises a control system which is also provided with the necessary control means for controlling its operation, for example manually.
  • the control means are normally placed in such a way that a person on the work platform can move the work platform to a desired height or all the way down, wherein it is possible to exit the work platform or load goods.
  • a single control system can be used for controlling several lifting and lowering devices and for keeping the work platform in balance.
  • the mast structures or movable work platforms are provided with cranes or pivotable boom structures with the necessary equipment for lifting and lowering loads, for example by means of a hoisting wire rope and a hook.
  • the crane is mounted on top of the lifting and lowering device, and said lifting and lowering device elevates a lift cage which is used for the transportation of workers.
  • the crane is mounted to the mast structure in a movable manner, and it is connected to the lifting and lowering device.
  • the weights to be elevated and transferred exert loads on the lifting and lowering device which is also subjected to the load caused by the work platform.
  • the loads are effective on the mast structure which must bear the loads caused by the crane, the load in the crane, and the loads caused by the work platform, among other things.
  • the structure disclosed in said FR document is supported to the mast structure by means of three supports on top of each other, consisting of rollers. It is obvious that at the middlemost support, a load force is effective that tends to bend both the lifting and lowering device and the mast structure. Reinforcing the structures and increasing the strength often lead to an unnecessary increase in the size of the structure, an excessive weight and extra costs as well as more complex manufacture.
  • the loads of the mast structure are influenced in such a way that particularly the bending load forces can be reduced.
  • Said apparatus makes it possible that the loads caused by the work platform and particularly the crane are effective at different points of the mast structure and not at the same point, which would be disadvantageous.
  • Said load forces are caused by said apparatus, crane, or other weights and loads.
  • the possibilities of varying the work platform remain good, because the apparatus and, for example, the crane can be constructed separately and placed as a system structurally separate from the work platform.
  • the support which consists of, for example, rollers, can be placed as low as possible in relation to the work platform. This has not been possible earlier.
  • the frame structure utilized in the apparatus is suitable for use not only for cranes but also for other lifting and transfer devices as well as for other purposes, such as merely the transportation and carrying of weights.
  • the weights and loads can also be connected directly to the frame structure.
  • the crane it is alternatively possible to connect machines, devices and structures, for example according to the needs at the worksite, even other working levels or work platforms, to the presented frame structure.
  • the frame structure can also be provided with aerial work platforms equipped with a boom. By means of the presented solution, the loads of these are not effective on the work platform but on the mast structure.
  • the frame structure transmits load forces to the mast structure by means of its own structure.
  • the connection between the frame structure and the work platform is floating, which enables a sufficient support but also their movement in relation to each other.
  • Figure 1 shows a system of prior art comprising a mast structure 1, a work platform 2 which can be lifted and lowered and which comprises a frame structure 3 with a flooring.
  • the railings 4 bordering the flooring also comprise gates 5 and steps 6 for climbing to the work platform when the work platform is in the lowered position.
  • the work platform 2 is mounted to the mast structure 1 by means of a lifting and lowering device 7.
  • the lifting and lowering device 7 comprises the necessary control devices for lifting and lowering the work platform 2 together with the lifting and lowering device 7 in such a way that the work platform 2 moves along the mast structure 1.
  • the control devices comprise a drive pinion which functionally engages a toothing provided in the mast structure 1.
  • the mast structure 1 is placed on top of a movable base 8.
  • the base 8 constitutes a haulable carriage, and it comprises several adjustable supporting feet 9.
  • the mast structure 1 can be extended by means of module structures to a desired height, and furthermore, it can be mounted to a building or other structures, if necessary, by applying fasteners to support and brace the mast structure 1.
  • the system of Fig. 1 is also well described by the features which have already been presented earlier.
  • Figure 2 shows an example of a novel apparatus 10, in this case particularly for the lifting and transfer of loads, which apparatus can be connected e.g. to the mast structure 1 of Fig. 1 in such a way that it can move along the mast structure 1.
  • Said apparatus makes the above-presented advantages possible.
  • the apparatus 10 constitutes a system with very versatile uses at various worksites.
  • the apparatus 10 comprises a crane 11 whose principle of operation is based on a knuckle boom crane which also has a rotary movement around a vertical axis of rotation.
  • the crane 11 comprises two boom parts which are movable in the vertical direction and are connected to each other by a joint.
  • One boom part is connected by a joint to the frame 12 of the apparatus.
  • the outermost boom part is telescopic, wherein its length is changeable.
  • the telescopic structure or the joints of the boom parts are not necessary, but by means of them, the reach and the operating range of the crane 11 can be increased significantly, as well as by means of said rotary movement.
  • the boom parts and the rotary movement of the crane 11 are controlled by means of cylinders and pressurized medium.
  • the control system used for controlling the crane 11 applies, for example, control valves known as such, which are operated electrically or manually and which control the pressure in the cylinders and the flow of pressurized medium.
  • the control system produces the volume flow and the pressure of the pressurized medium by means of a pump, or the pressurized medium required by the apparatus 10 is obtained from an external source.
  • the pressurized medium is produced by means of a pump at the apparatus 10, at the work platform 2 or even at the movable base 8, from where the pressurized medium is led by hoses or pipes via the control valves to cylinders or other actuators, such as motors.
  • the control system comprises the necessary manual control means for the control of the crane 11, and they are normally placed within the reach of the operator, for example at the work platform 2.
  • the control system can be primarily based, for example, in connection with the frame 12.
  • the control system can also be operated by remote control, so that the necessary manual control means can also be placed in the remote control which can be carried with the work platform 2, or elsewhere.
  • the outermost boom part is provided with the necessary connecting means, to which e.g. a lifting hook or lifting ropes can be connected.
  • a lifting hook or lifting ropes can be connected.
  • there is only one boom part and in other examples, there are more than two boom parts.
  • the rotary movement of the crane 11 is not implemented.
  • a small work platform or work cage 25 is connected to the outermost boom part, wherein the crane 11 is intended for moving the work cage in such a way that a worker in the work cage has access close to the object.
  • a small work platform or work cage 25 is connected to the outermost boom part, wherein the crane 11 is intended for moving the work cage in such a way that a worker in the work cage has access close to the object.
  • the frame 12 comprises a cylindrical vertical structure, to which the crane 11 or a corresponding lifting device is connected.
  • a lower support 13 is mounted to the lower part of the frame 12, by means of which support the frame 12 can be connected to the mast structure 1 in a movable manner.
  • the lower support 13 comprises, for example, a square braced structure with supporting rollers which are placed against the mast structure and roll along the same. The supporting rollers are placed in the braced structure in such a way that they keep the lower part of the frame stationary in the horizontal direction with respect to the mast structure 1.
  • the lower support 13 is implemented by means of eight supporting rollers which are placed substantially at the same height and are placed against the four sides of the mast structure 1.
  • the braced structure can be dismounted or opened so that the crane 11 and the frame 12 can be installed in their place.
  • the braced structure is partly open, but it may also be closed.
  • An upper support 14 is mounted to the upper part of the frame 12, by means of which support the frame 12 can be connected to the mast structure 1 in a movable manner.
  • the upper support 14 and its structure comply with the same principles as the lower support 13.
  • the structures of the supports 13, 14 may also differ from each other, but in view of the manufacture, it is simple that they match each other.
  • the crane 11 is connected to the frame 12 substantially at the same height as the upper support 14, or it is slightly higher than that.
  • the crane 11 is connected by a rotary pillar 15 to the upper part of the frame 12, as an extension to the frame 12, and an actuator 16 for rotating the crane 11, that is, a cylinder with a changeable length, is connected to the pillar 15 on one hand and to the upper support 14 on the other hand.
  • the upper support 14 and the lower support 13 are placed at a suitable distance from each other in the vertical direction so that, for example, load forces caused by the weight of the crane 11 or by the manipulation of loads and weights and being effective on the supports 13, 14 and the mast structure 1 would be sufficiently low.
  • the magnitude of the load forces is influenced particularly by the vertical distance between the upper support 14 and the lower support 13.
  • the load in the crane 11 causes a moment of torque whose magnitude depends, among other things, on the horizontal distance between the load and the upper support 14.
  • the lower support 13 must compensate for the moment of torque in such a way that the lower support 13 is supported to the mast structure 1, simultaneously causing a horizontal load force.
  • An increase in the distance between the lower support 13 and the upper support 14 will result in a decrease in the horizontal load force, respectively.
  • the load of the frame 12 is also decreased. Thanks to this, the structure of the frame 12 can be made lighter, and its elongation will not excessively increase the weight of the whole apparatus.
  • the distance between the upper and lower supports 13, 14 is also adapted in such a way that the apparatus can be connected to the mast structure 1 of Fig. 1 in such a way that the work platform 2 is placed between said supports.
  • the supports 13, 14 are placed directly below and above the work platform 2 and the lifting and lowering device 7.
  • the distance is so great that the work platform 2 in combination with the lifting and lowering device 7 is capable of moving independently in the vertical direction in the area between the supports even when said supports and the frame 12 together do not move.
  • the upper support 14 is placed above the work platform 2, and the lower support 13 is placed below the work platform 2.
  • the apparatus is not equipped with a separate lifting and lowering device, by means of which the apparatus would move along the mast structure 1.
  • a structure is achieved which is as simple and reliable as possible.
  • Pushed by the work platform 2, or preferably by the lifting and lowering device 7, the apparatus is moved upwards.
  • the apparatus moves downwards with the platform 2, until the lower support 13 encounters the lower part of the mast structure 1 or another corresponding obstacle and stops in place, which situation is illustrated in Fig. 4 .
  • the work platform 2 may move down to some extent, which situation is illustrated in Fig. 5 .
  • the apparatus is structurally separate, for example, from the lifting and lowering device 7. Consequently, the work platform 2 can be driven down without being restricted by said apparatus, wherein climbing to the platform and unloading or loading are easy.
  • the apparatus for example its upper support 14, can also be temporarily connected or locked to other structures, such as the lifting and lowering device 7.
  • other structures such as the lifting and lowering device 7.
  • the structures and their operation may comply with the principles presented in this description.
  • the apparatus may thus, if necessary, comprise the necessary brake devices for keeping it in position.
  • Figure 3 illustrates the operation of the apparatus of Fig. 2 in the system of Fig. 1 .
  • the structure of the lifting and lowering device 7, which in this example extends some distance above the work platform 2, is supported to the upper support 14 and pushes it upwards.
  • the upper support 14 or any other structure of the apparatus is not connected by fastenings to the structure of the work platform 2 or the lifting and lowering device 7.
  • the lifting and lowering device 7 carries the apparatus of Fig. 2 .
  • a weight 17 has been transported with the work platform 2 to the upper part of the mast structure 1.
  • the lower support 13 remains at a distance from the work platform 2 and its frame structure 3.
  • the frame 12 connecting the supports 13, 14 passes the work platform and is also placed outside the work platform 2, adjacent to it, wherein it is not necessary to make changes in the work platform 2 because of the frame 12.
  • the frame 12 can be a girder and lattice structure consisting of a single element or several separate elements.
  • the work platform 2 and the frame 12 move along the mast structure 1 by means of the lifting and lowering device 7.
  • the moments of torque effective on the frame 12 and the supports 13, 14 cannot affect the work platform 2 or the lifting and lowering device 7 which is only subjected to the vertical load force caused by the weight 17 and the total mass of the apparatus shown in Fig. 2 .
  • the frame 12 that connects the supports 13, 14 passes the work platform and extends through the work platform 2.
  • the work platform 2 is supplemented with a connecting part 18, by which the load forces of the work platform 2 can be transmitted to the frame 12 and further via it to the mast structure 1.
  • the frame 12 is a vertical beam structure placed next to the mast structure 1.
  • the frame 12 is capable of moving in relation to the connecting part 18 which comprises, for example, supporting rollers rolling along the frame 12.
  • the mast structure can in some examples also be replaced by a rail structure, to which the work platform is connected, for example by means of the lifting and lowering device, or to which the apparatus according to the example of Fig. 2 or 6 is connected.
  • the lifting and lowering device 7 comprises the necessary actuators for lifting and lowering the work platform together with the lifting and lowering device in such a way that the work platform moves along the rail structure.
  • the lifting and lowering device is separate from the work platform and is arranged in connection with the rail structure, for example at its upper end.
  • the lifting and lowering device is connected to the work platform by means of, for example, one or more coilable wire ropes.
  • Figures 8a-8c show some examples of a rail structure 19 which is connected to a building.
  • the rail structure 19 consists of, for example, one or more I-beams.
  • a dash-and-dot line depicts the connection of the work platform or said apparatus to the rail structure.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)

Claims (6)

  1. Système comprenant :
    - une structure à mât ou à rails (1, 24), qui est essentiellement à verticale ;
    - une plate-forme de travail mobile (2), qui est raccordée à la structure à mât ou à rails (1, 24) de telle sorte que la plate-forme de travail (2) est capable de se déplacer vers le haut et vers le bas le long de la structure à mât ou à rails (1, 24) ;
    - un dispositif de levage et d'abaissement (7), par la commande duquel la plate-forme de travail (2) peut être déplacée le long de la structure à mât ou à rails (1, 24) ;
    - une structure de cadre mobile (12), qui est raccordée à la structure à mât ou à rails (1, 24) de telle sorte que la structure de cadre (12) est capable de se déplacer vers le haut et vers le bas le long de la structure à mât ou à rails (1, 24) ; et
    - un support supérieur (14) et un support inférieur (13) qui sont positionnés à une distance l'un de l'autre dans la direction verticale et au moyen desquels la structure de cadre (12) est raccordée à la structure à mât ou à rails (1, 24) ;
    dans lequel ladite structure de cadre (12) s'étend au-delà de la plate-forme de travail (2) de telle sorte que le support supérieur (14) est placé au-dessus de la plate-forme de travail (2), et le support inférieur (13) est placé en dessous de la plate-forme de travail (2), caractérisé en ce que la plate-forme de travail (2) peut être déplacée entre le support supérieur (14) et le support inférieur (13) également lorsque la structure de cadre (12) et lesdits supports (13, 14) ne sont pas mobiles une fois en place.
  2. Système selon la revendication 1, caractérisé en ce que le dispositif de levage et d'abaissement (7) de la plate-forme de travail (2) est agencé pour porter le support supérieur (14) pendant un mouvement vers le haut et vers le bas.
  3. Système selon la revendication 1 ou 2, caractérisé en ce qu'un système partiel formé par la structure de cadre (12) et lesdits supports (13, 14) n'est pas équipé d'un dispositif de levage et d'abaissement séparé.
  4. Système selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le système comprend également une grue (11) raccordée à la structure de cadre (12), pour manipuler des charges et des poids.
  5. Système selon la revendication 1, caractérisé en ce qu'un appareil (10) comprend ladite structure de cadre (12), ledit support inférieur (13) et ledit support supérieur (14), dans lequel il est possible de bloquer le support supérieur (14) et/ou le support inférieur (13) au moyen d'un frein, moyennant quoi la plate-forme de travail (2) peut être abaissée jusqu'à un certain point de sorte que ledit appareil reste stationnaire.
  6. Système selon la revendication 1, caractérisé en ce que la plate-forme de travail (2) est complétée avec une pièce de raccordement (18) par laquelle des forces de charge de la plate-forme de travail (2) peuvent être transmises à la structure de cadre (12), et en outre via la structure de cadre (12) à la structure à mât (1), la structure de cadre (12) est une structure de type poutre verticale placée à proximité de la structure à mât (1), la plate-forme de travail (2) et la structure de cadre (12) sont séparées, la plate-forme de travail (2) et la structure de cadre (12) sont agencées pour se déplacer le long de la structure à mât (1) au moyen du dispositif de levage et d'abaissement (7), la structure de cadre (12) est capable de se déplacer en relation avec la pièce de raccordement (18), et la pièce de raccordement (18) comprend des rouleaux de support agencés pour rouler le long de la structure de cadre (12).
EP20110397501 2010-01-18 2011-01-14 Système comprenant une plateforme de travail mobile, appareil et dispositif de grue Active EP2345623B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI20105035A FI20105035A0 (fi) 2010-01-18 2010-01-18 Liikuteltavan työlavan käsittävä järjestelmä sekä laitteisto ja nosturilaitteisto

Publications (2)

Publication Number Publication Date
EP2345623A1 EP2345623A1 (fr) 2011-07-20
EP2345623B1 true EP2345623B1 (fr) 2013-07-31

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EP20110397501 Active EP2345623B1 (fr) 2010-01-18 2011-01-14 Système comprenant une plateforme de travail mobile, appareil et dispositif de grue

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EP (1) EP2345623B1 (fr)
CA (1) CA2728798C (fr)
ES (1) ES2432103T3 (fr)
FI (1) FI20105035A0 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK179290B1 (en) * 2016-09-22 2018-04-09 Lolle & Nielsen Holding Aps Work platform comprising a crane device
RU174199U1 (ru) * 2017-01-23 2017-10-06 Открытое акционерное общество "Тверской вагоностроительный завод" (ОАО "ТВЗ") Леса подъёмные
JP6586490B2 (ja) * 2017-12-22 2019-10-02 西尾レントオール株式会社 人荷昇降装置付き移動昇降式足場並びにこれらを用いた施工方法及びこれらの設置方法
EP3748106A1 (fr) 2019-06-04 2020-12-09 Scanclimber Oy Système de plate-forme de travail doté d'un pont de réglage
CN115289384B (zh) * 2022-07-13 2024-04-16 上海江南长兴造船有限责任公司 一种用于超大型lng薄膜罐围护系统安装的轨道式装置及方法

Family Cites Families (9)

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Publication number Priority date Publication date Assignee Title
FR2528815A1 (fr) 1982-06-18 1983-12-23 Chainette Atel Appareil du genre destine a etre accole a une construction pour le transfert de charges selon des directions verticale et transversale
US4498556A (en) 1982-09-11 1985-02-12 Access Engineering Ltd. Vertically movable, road towable work platform
DE8912853U1 (de) 1989-10-31 1990-01-18 Greßbach Winden- und Maschinenbau GmbH, 8753 Obernburg Vorrichtung zum Erleichtern des Mauerwandbaus
US5368125A (en) * 1993-04-16 1994-11-29 St-Germain; Andre Platform raising system in scaffolding
JP2597947B2 (ja) 1993-05-28 1997-04-09 守夫 反町 足場装置
JPH08208155A (ja) 1995-02-02 1996-08-13 Ando Corp 建設工事用エレベータ
DE19715191C1 (de) * 1997-04-11 1998-10-29 Hek Mfg Bv Hubarbeitsbühne
DE10116414A1 (de) * 2001-04-02 2002-10-24 Hek Mfg Bv Hubarbeitsbühne
US20030213765A1 (en) 2002-05-20 2003-11-20 Andre St-Germain Tower crane with raising platform

Also Published As

Publication number Publication date
CA2728798C (fr) 2015-10-27
EP2345623A1 (fr) 2011-07-20
ES2432103T3 (es) 2013-11-29
CA2728798A1 (fr) 2011-07-18
FI20105035A0 (fi) 2010-01-18

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