EP2427402B1 - Dispositif de levage, et élément de levage à utiliser dans un dispositif de levage - Google Patents

Dispositif de levage, et élément de levage à utiliser dans un dispositif de levage Download PDF

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Publication number
EP2427402B1
EP2427402B1 EP10713267A EP10713267A EP2427402B1 EP 2427402 B1 EP2427402 B1 EP 2427402B1 EP 10713267 A EP10713267 A EP 10713267A EP 10713267 A EP10713267 A EP 10713267A EP 2427402 B1 EP2427402 B1 EP 2427402B1
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EP
European Patent Office
Prior art keywords
lifting
lifting device
axis
plate
base
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
EP10713267A
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German (de)
English (en)
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EP2427402A1 (fr
Inventor
Ronaldus Petrus Theodorus Maria Maas
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.)
Slemaco Beheer BV
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Slemaco Beheer BV
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66FHOISTING, 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
    • B66F9/00Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/065Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks non-masted
    • B66F9/0655Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks non-masted with a telescopic boom
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66FHOISTING, 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
    • B66F9/00Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075Constructional features or details
    • B66F9/12Platforms; Forks; Other load supporting or gripping members
    • B66F9/14Platforms; Forks; Other load supporting or gripping members laterally movable, e.g. swingable, for slewing or transverse movements
    • B66F9/147Whole unit including fork support moves relative to mast
    • B66F9/149Whole unit including fork support rotates

Definitions

  • the present invention relates to a lifting device comprising a base, an elongate arm, which is pivotally connected to the base with a first end for movement about a horizontal first axis, an elongate mast, which is connected with a first end thereof to a second end of the arm remote from the first end of the arm, and an engaging part, which is provided on a second end of the mast remote from the first end of the mast, said lifting device further comprising a lifting element comprising a base part and a lifting part, which base part is designed to be rigidly connected to the engaging part and which lifting part is connected to the base part, being designed to support an object to be lifted.
  • a lifting device is known from JP 4 256 693 and JP 2005 067 751 .
  • a telehandler is a mobile crane for lifting generally heavy objects, such as building materials.
  • the known telehandler has a chassis-mounted base provided with a cabin, in which the operator of the telehandler can be seated. Mounting the base for rotation on the chassis is known, for that matter.
  • the chassis is provided with wheels, so that the telehandler can be independently driven to the intended location, where it can be used for lifting objects.
  • Connected to the base is a telescopic arm, which is pivotable relative to the base about a horizontal axis. At the end of the telescopic arm remote from the base, a mast connected to the telescopic arm is provided.
  • the mast is provided with an engaging part, to which several tools can be connected.
  • the lifting element of the aforesaid known telehandler has a base part, which can be connected to the mast, and a lifting part, which is pivotally connected to the base part for movement about a vertical axis.
  • a drawback of the above-described known telehandler provided with a lifting element is that manoeuvring the telehandler, more specifically the chassis with the telehandler base, for correctly picking up an object to be lifted is difficult and takes much time.
  • An advantage of the lifting device according to the present invention is that because the lifting part is at least substantially fully rotatable with respect to the base part, it is no longer essential to position the base of the lifting device correctly relative to the object to be lifted. As a consequence, considerably less and, moreover, less precise manoeuvring is required, since the lifting part of the lifting element of the lifting device according to the present invention can be rotated in such a manner that the object can be easily lifted from several positions. Thus it is also possible when using such a lifting device to operate at a random angle (relative to the longitudinal direction of the base with the telescopic arm). With the aforesaid known telehandler, the rotation of the lifting part relative to the base part is limited on account of the presence of the engaging part in the path of movement of the lifting part.
  • a telehandler comparable to the known telehandler as described above is known from GB 1 455 952 .
  • the mast of said known telehandler is pivotally connected to the telescopic arm for movement about a horizontal axis.
  • the rotation of the lifting part relative to the base part of said known telehandler is limited on account of the presence of the telehandler mast in the path of a lifting part that is pivotable about a vertical axis.
  • the mast is preferably pivotally connected to the arm for movement about a horizontal second axis.
  • the object can be held horizontally to a significant degree while it is being lifted.
  • said at least substantially vertical plane coincides with a vertical plane through, seen in horizontal direction, the centre of the arm and of the mast. Since the third axis is in this case in line with the centre of the mast and the arm, a greater ease of use of the lifting device is obtained.
  • the lifting element preferably comprises two mutually parallel elongate forks for forming a supporting surface for the object to be lifted. Furthermore preferably, the forks are provided on either side of the third axis, even more preferably spaced therefrom by at least substantially the same distance. If the third axis is in line with the centre of the mast and the arm, as described above, and preferably if the third axis is located under the engaging part, the bending moment exerted on the engaging part by the object will be minimal.
  • Controlling the rotation of the lifting part relative to the base part is significantly simplified if the supporting surface is oriented perpendicularly relative to the third axis.
  • the functionality of the lifting device is further enhanced if the engaging part is pivotally connected to the mast for movement about a horizontal fourth axis.
  • the third axis intersects the fourth axis or if the third axis crosses the fourth axis in direct vicinity.
  • the operation of the lifting device is made easier if the horizontal first axis and the horizontal second axis extend parallel to each other. Thus the mast and the arm will remain in line upon pivoting about the first axis and the second axis, respectively.
  • the mobility of the lifting device is increased if the base is provided on a vehicle.
  • the base part of the lifting element comprises a plate
  • the lifting part comprises a further plate which extends parallel to said plate, one of said plate and said further plate comprising a stub axle extending perpendicularly to said plate, the central axis of which stub axle coincides with the third axis, and the other one of said plate and said further plate comprising a recess, in which said stub axle is rotatably accommodated.
  • a number of rolling means are provided between said plate and said further plate for supporting said further plate on said plate.
  • the rolling means are provided on one of said plate and said further plate, being designed to roll on the other one of said plate and said further plate during rotation of the lifting part. The bending moment acting on the stub axie by the object to be lifted by means of the lifting part is thus significantly reduced.
  • the rotation of the lifting part relative to the base part can be controlled in a simple manner if a gear wheel is provided on one of said plate and said further plate, said gear wheel being designed to mesh with a gear to be driven by a drive unit mounted on the other one of said plate and said further plate. Rotation of the lifting part is thus realised in a simple and accurate manner by suitable actuation of the drive unit.
  • An advantage of mounting the drive unit on the base part, and thus of providing the gear wheel on the lifting part, is that no conduits to the lifting part for actuating the drive unit are needed, so that the lifting part can thus be rotated about the third axis at will and without limitations.
  • the drive unit is hydraulically actuated. Since the above-described lifting devices generally already have a hydraulic driving system on board for controlling the arm and the mast, the drive unit for rotating the lifting part can thus simply be connected to the existing hydraulic driving system.
  • the lifting part can be rotated through an angular range of at least 270 degrees about the third axis relative to the base part.
  • the present invention relates to a lifting element, in particular for use in a lifting device according to the first aspect of the invention, said lifting element comprising a base part and a lifting part, which base part is designed to be rigidly connected to an engaging part of the lifting device, and which lifting part is connected to the base part, being designed to support an object to be lifted, said lifting part being connected to the base part for rotation about a third axis lying in an at least substantially vertical plane, with the third axis being located under the engaging part, at least in the connected condition of the lifting element to the engaging part of the lifting device.
  • the advantages of such a lifting element according to the present invention are analogous to the advantages of the lifting device according to the first aspect of the present invention as described above. It is conceivable within this framework to use the lifting element also in combination with lifting devices other than the one described in the foregoing, for example with a fork-lift truck or with a crane other than the mobile or stationary crane described in the foregoing.
  • FIGS. 1 and 2 there is shown a lifting device, more specifically a telehandler 1 according to the present invention.
  • the telehandler 1 has a base 2 comprising an upper part 210, which can rotate relative to the lower part 220 via a slewing bearing 230.
  • a cabin 240 is provided in the upper part 210, in which the operator of the telehandler 1 can be seated.
  • Connected to the upper part 210 is a telescopic arm 3 which is pivotable about a horizontal axis relative to the upper part 210.
  • the length as well as the angular position of the telescopic arm 3 can be changed hydraulically (not shown in more detail in the figures).
  • a mast 4 is provided at the end of the telescopic arm 3 remote from the base 2.
  • the mast 4 can pivot about a horizontal shaft 5 relative to the telescopic arm 3.
  • the angular position of the mast 4 relative to the telescopic arm 3 can be set by actuating the piston-cylinder combination 301.
  • An engaging part 6 is provided at the end of the mast 4 remote from the telescopic arm 3.
  • the engaging part 6, which is shown clearly in particular in figure 3 is pivotally connected to the mast 4 for movement about a horizontal shaft 8 relative to the mast 4.
  • the angular position of the engaging part 6 relative to the mast 4 can be set by means of the piston-cylinder combination 401.
  • a lifting element 20 is connected to the engaging part 6.
  • the lifting element 20 comprises a base part 21 and a lifting part 22.
  • the lifting part 22 can rotate relative to the base part 21.
  • the base part 21 has two vertical plates 202, which are mounted on a horizontal plate 25. Mounted between the plates 202 is a horizontally extending rod 201.
  • the rod 201 is adapted to be received in recesses 61 provided in the engaging part 6 (see figure 4 ).
  • the engaging part 6 furthermore has two horizontally translatable pins 62, which fall into corresponding holes in plates 202 of the base part 21 so as to fix the base part 21 relative to the engaging part 6 once the rod 201 is accommodated in the recesses 61.
  • the lifting part 22 of the lifting element 20 comprises a plate 28 and, connected thereto, a support 34 for forks 24a, 24b.
  • the position of the forks 24a, 24b can be adjusted in horizontal direction.
  • a stub axle 26 is fixed to the plate 25 of the base part 21, which stub axle extends perpendicularly in downward direction from the plate 25 in the direction of the plate 28. Seen in horizontal direction, transversely to the arm 3 and the mast 4, the stub axle 26 is located in the centre of the arm and the mast or, in other words, in line with the longitudinal direction of the arm and the mast.
  • the central axis of the stub axle 23 also intersects the central axis of the horizontal pin 8.
  • runners 27 are provided on the underside of the plate 25.
  • a locking ring 35 is fitted, which locking ring prevents the bush 29 from sliding downwards off the stub axle 26.
  • the locking ring 35 is fitted in such a manner that the runners 27 roll on the plate 28 with a slight bias.
  • the runners 27 are provided for the purpose of significantly reducing the bending moment exerted on the stub axle 26 by the object 7 to be lifted.
  • a gear wheel 30 is mounted on the plate 28 for controlling the rotation of the lifting part 22 relative to the base part 21.
  • a hydraulic motor 22 is mounted on the plate 25, which motor comprises a shaft 37 extending downwards through the plate 25, on the end of which shaft a gear 31 is mounted.
  • the lifting part 22 can be rotated relative to the base part 21 by suitable actuation of the hydraulic motor 32.
  • the location of the stub axle 23, or at least the central axis thereof, under the engaging part 6, and thus also directly under the end of the mast 4 at least remote from the telescopic arm 3, enables the lifting part to make a complete rotation in the horizontal plane.
  • the hydraulic motor 32 can be connected to the hydraulic circuit that is already present on the telehandler 1.
  • the telehandler 1 has a significantly greater functionality and ease of operation, since it is also possible to lift objects disposed at positions beside the lifting element 20, i.e. objects not being in line with the telescopic arm 3 and the mast 4, by means of the telehandler 1. This means that, for example in the situation in which a pallet is to be lifted, the orientation of the pallet relative to the telehandler 1 per se is not relevant. In many cases, a pallet can only be accessed by the forks 24a, 24b of the lifting element from two of the four circumferential sides.
  • the lifting part 22 of the lifting element 20 can first be rotated so that the forks 24a, 24b extend perpendicularly to the appropriate circumferential side of the pallet, after which the forks 24a, 24b are moved under the pallet.
  • the base 2 of the telehandler can remain in its place, so that manoeuvring the base for picking up an object will not be necessary, or at least only to a minimal extent.

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Forklifts And Lifting Vehicles (AREA)

Claims (15)

  1. Dispositif de levage (1) comprenant une base (2), un bras allongé (3) qui est relié à pivotement à la base par une première extrémité pour le mouvement autour d'un premier axe horizontal, un mât allongé (4) dont une première extrémité est reliée à une seconde extrémité du bras à distance de la première extrémité du bras, et une partie d'engagement (6) qui est prévue sur une seconde extrémité du mât à distance de la première extrémité du mât, ledit dispositif de levage (1) comprenant en outre un élément de levage (20) comprenant une partie de base (21) et une partie de levage (22), laquelle partie de base est conçue pour être reliée rigidement à la partie d'engagement et laquelle partie de levage est reliée à la partie de base, conçue pour supporter un objet (7) à lever, ladite partie de levage (22) étant reliée à la partie de base (21) pour la rotation autour d'un troisième axe (23) se trouvant dans un plan au moins sensiblement vertical, caractérisé en ce que ledit troisième axe (23) est situé sous la partie d'engagement (6).
  2. Dispositif de levage selon la revendication 1, caractérisé en ce que le mât (4) est relié de manière à pouvoir pivoter au bras (3) pour le mouvement autour d'un deuxième axe horizontal (5).
  3. Dispositif de levage selon la revendication 1 ou 2, caractérisé en ce que ledit plan au moins sensiblement vertical coïncide avec un plan vertical traversant, vu dans la direction horizontale, le centre du bras (3) et du mât (4).
  4. Dispositif de levage selon l'une quelconque des revendications précédentes, caractérisé en ce que l'élément de levage (20) comprend deux fourches (24a, 24b) allongées parallèles l'une à l'autre pour la formation d'une surface porteuse pour l'objet (7) à lever.
  5. Dispositif de levage selon la revendication 4, caractérisé en ce que la surface porteuse est orientée perpendiculairement au troisième axe (23).
  6. Dispositif de levage selon l'une quelconque des revendications précédentes, caractérisé en ce que la partie d'engagement (6) est reliée de manière à pouvoir pivoter au mât (4) pour le mouvement autour d'un quatrième axe horizontal (8).
  7. Dispositif de levage selon l'une quelconque des revendications précédentes, caractérisé en ce que le bras (3) est relié de manière à pouvoir pivoter à la base (2) pour le mouvement autour d'un cinquième axe vertical.
  8. Dispositif de levage selon l'une quelconque des revendications précédentes, caractérisé en ce que le premier axe horizontal et le second axe horizontal (5) s'étendent parallèlement l'un à l'autre.
  9. Dispositif de levage selon l'une quelconque des revendications précédentes, caractérisé en ce que la base (2) est prévue sur un véhicule.
  10. Dispositif de levage selon l'une quelconque des revendications précédentes, caractérisé en ce que la partie de base (21) de l'élément de levage (20) comprend une plaque (25) et la partie de levage (22) comprend une autre plaque (28) qui s'étend parallèlement à ladite plaque (25), une plaque parmi ladite plaque (25) et ladite autre plaque (28) comprenant une fusée d'essieu (26) s'étendant perpendiculairement à ladite plaque (25), l'axe central de la fusée d'essieu coïncidant avec le troisième axe (23) et l'autre de ladite plaque (25) et de ladite autre plaque (28) comprenant un évidement (29) recevant ladite fusée d'essieu (26) de manière rotative.
  11. Dispositif de levage selon la revendication 10, caractérisé en ce qu'un nombre de moyens de roulement (27) est prévu entre ladite plaque (25) et ladite autre plaque (28) pour supporter ladite autre plaque (28) sur ladite plaque (25).
  12. Dispositif de levage selon la revendication 10 ou 11, caractérisé en ce qu'une roue d'engrenage (30) est prévue sur une plaque parmi ladite plaque (25) et ladite autre plaque (28), ladite roue d'engrenage étant conçue pour s'engrener avec un engrenage (31) à entraîner par une unité d'entraînement (32) montée sur l'autre plaque de ladite plaque (25) et de ladite autre plaque (28).
  13. Dispositif de levage selon la revendication 12, caractérisé en ce que l'unité d'entraînement (32) est actionnée hydrauliquement.
  14. Dispositif de levage selon l'une quelconque des revendications précédentes, caractérisé en ce que la partie de levage (22) peut être tournée dans une plage angulaire d'au moins 270 degrés autour du troisième axe (23) par rapport à la partie de base (21).
  15. Elément de levage (20) destiné en particulier à être utilisé dans un dispositif de levage (1) selon l'une quelconque des revendications précédentes, ledit élément de levage comprenant une partie de base (21) et une partie de levage (22), laquelle partie de base est conçue pour être reliée rigidement à une partie d'engagement (6) du dispositif de levage (1), et laquelle partie de levage est reliée à la partie de base, conçue pour support un objet (7) à lever, ladite partie de levage (22) étant reliée à la partie de base (21) pour la rotation autour d'un troisième axe (23) se trouvant dans un plan au moins sensiblement vertical, caractérisé en ce que le troisième axe est situé sous la partie d'engagement, au moins dans l'état relié de l'élément de levage à la partie d'engagement du dispositif de levage.
EP10713267A 2009-05-08 2010-04-15 Dispositif de levage, et élément de levage à utiliser dans un dispositif de levage Active EP2427402B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1036935A NL1036935C2 (nl) 2009-05-08 2009-05-08 Hefinrichting en heforgaan voor toepassing in een hefinrichting.
PCT/NL2010/050197 WO2010128847A1 (fr) 2009-05-08 2010-04-15 Dispositif de levage, et élément de levage à utiliser dans un dispositif de levage

Publications (2)

Publication Number Publication Date
EP2427402A1 EP2427402A1 (fr) 2012-03-14
EP2427402B1 true EP2427402B1 (fr) 2013-03-20

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EP10713267A Active EP2427402B1 (fr) 2009-05-08 2010-04-15 Dispositif de levage, et élément de levage à utiliser dans un dispositif de levage

Country Status (3)

Country Link
EP (1) EP2427402B1 (fr)
NL (1) NL1036935C2 (fr)
WO (1) WO2010128847A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4303169A1 (fr) * 2022-07-04 2024-01-10 Joakim Granfors Véhicule pour le sauvetage de voitures de course, procédé pour le sauvetage de voitures de course utilisant ce véhicule et utilisation du véhicule pour le sauvetage de voitures de course

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US3836025A (en) * 1973-05-21 1974-09-17 Loed Corp Material-handling machine
SU793926A1 (ru) * 1978-11-24 1981-01-07 Специальное Проектно-Конструктор-Ckoe Технологическое Бюро C Опытнымпроизводством Государственного Про-Мышленного Объединения Ремонтныхи Машиностроительных Заводов Объе-Динения "Союзлесреммаш" Фронтальный погрузчик
US5114294A (en) * 1989-06-06 1992-05-19 Attman Carl P Multi-directional lifting and handling attachment for a boom-type vehicle
JP2722283B2 (ja) * 1991-02-08 1998-03-04 高砂熱学工業株式会社 重量物荷揚げ作業車両
US5813697A (en) * 1994-12-05 1998-09-29 Trak International, Inc. Forklift stabilizing apparatus
US6047791A (en) * 1998-03-23 2000-04-11 Gehl Company Variable counterweight arrangement for a forklift-type vehicle
JP4311995B2 (ja) * 2003-08-22 2009-08-12 日立建機株式会社 コイルハンドリング機
US20070189888A1 (en) * 2006-02-09 2007-08-16 Tanner Thomas H Manipulator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4303169A1 (fr) * 2022-07-04 2024-01-10 Joakim Granfors Véhicule pour le sauvetage de voitures de course, procédé pour le sauvetage de voitures de course utilisant ce véhicule et utilisation du véhicule pour le sauvetage de voitures de course

Also Published As

Publication number Publication date
NL1036935C2 (nl) 2010-05-27
WO2010128847A1 (fr) 2010-11-11
EP2427402A1 (fr) 2012-03-14

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