EP2065334B1 - Mécanisme de basculement pour un châssis de levage d'un chariot de manutention et procédé de transport pour un chariot de manutention - Google Patents

Mécanisme de basculement pour un châssis de levage d'un chariot de manutention et procédé de transport pour un chariot de manutention Download PDF

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Publication number
EP2065334B1
EP2065334B1 EP08020757.4A EP08020757A EP2065334B1 EP 2065334 B1 EP2065334 B1 EP 2065334B1 EP 08020757 A EP08020757 A EP 08020757A EP 2065334 B1 EP2065334 B1 EP 2065334B1
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EP
European Patent Office
Prior art keywords
lifting structure
tipping mechanism
mast
pivoted
threaded rod
Prior art date
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Active
Application number
EP08020757.4A
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German (de)
English (en)
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EP2065334A1 (fr
Inventor
Max Fischer
Alexander Hofbauer
Carsten Schöttke
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.)
Jungheinrich AG
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Jungheinrich AG
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Publication of EP2065334A1 publication Critical patent/EP2065334A1/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
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices 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
    • B66F9/075—Constructional features or details
    • B66F9/08—Masts; Guides; Chains
    • B66F9/082—Masts; Guides; Chains inclinable
    • 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
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices 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
    • B66F9/075—Constructional features or details
    • B66F9/07563—Fork-lift trucks adapted to be carried by transport vehicles

Definitions

  • the invention relates to a tilting mechanism for a mast of a truck, wherein the mast is pivotally mounted about an axis of rotation between an at least approximately vertical operating position and an inclined relative to the vertical stop position on the frame of the truck, wherein the tilting mechanism is hinged to the mast and the frame of the truck and is designed such that the mast can be fixed in any pivoting positions between the operating position and the stop position.
  • GB 846 649 A describes a tilting mechanism according to the preamble of claim 1.
  • Masts of industrial trucks, in particular order pickers have a lowered height of more than 2 m up to 6 m when the driver's cab or load-carrying fork is lowered, depending on what maximum height the cabin or the load-carrying fork can be raised.
  • the pivoting from the operating position in the stop position is usually at the production site of the truck, where appropriate crane facilities belong to Maschinensaustattung.
  • the mast pivoted into the stop position after delivery of the truck at a customer must be placed back in the operating position, the customer on site often no cranes are available, resulting in an increase in commissioning costs for the customer, as a rule in addition Forklift of the production company for erecting the mast has to be ordered or rented.
  • the object of the invention is to simplify the pivoting of the mast of an industrial truck, so that time and costs can be saved when preparing the transport of the truck and at its commissioning.
  • the tilting mechanism comprises a threaded rod extending between the two linkages and that it is removable when the mast is in the operating position and is not required for the operation of the industrial truck.
  • Such a tilting mechanism which is attached directly to the truck or mounted, allows the pivoting of the mast without the use of means of transport, such as cranes or additional forklift trucks are used. Furthermore, the tilting mechanism applied to the truck and to the mast makes it possible to maintain any pivoting position between the operating position and the stop position, since the mast can be fixed in any desired pivoting position.
  • the articulation of the tilting mechanism on the mast in the operating position is preferably arranged above the axis of rotation of the mast and the articulation of the tilting mechanism is preferably provided at an upper portion of the frame of the truck.
  • the arrangement of the tilting mechanism when the mast in operating position, the distance between the axis of rotation and the linkage on the mast substantially corresponds to the distance between the axis of rotation and the linkage on the frame.
  • the frame-side linkage should be arranged as far away from the axis of rotation.
  • tilting mechanism allows optimum power transmission from the pivoting mechanism to the mast, both during pivoting from the vertical operating position to the almost horizontal stop position and from the stop position or any pivotal position back into the operating position.
  • these distances can be chosen arbitrarily or vary depending on the selected articulation point on the lifting device or frame.
  • the tilting mechanism can be removed when mast is in the operating position.
  • a removable tilting mechanism also allows the attachment of the same on any industrial trucks, if in these the mast for maintenance purposes from the operating position to be pivoted. If necessary, it is also conceivable that such a tilting mechanism is offered as a kit module in order to be able to be used in older, appropriately retrofitted order pickers.
  • the linkage on the mast comprises a rotatable relative to the mast about an axis orthogonal to the threaded rod nut, with the threaded rod in threaded engagement stands.
  • the nut can be rotatably mounted by means of a bolt on the mast about this axis.
  • the rotatably mounted on the mast nut is due to a rotation of the threaded rod along this displaced, so that the mast from the operating position to the stop position or vice versa is pivoted.
  • the electrical and hydraulic supply of the truck are usually switched off.
  • the attached to the mast load part in particular the driver's cab and the load receiving fork, remain in the operating position of the mast due to gravity in an operational readiness position at their respective lower stop. From this position, the load part due to the force of gravity is usually not displaced upwards. However, if the mast is pivoted and especially in his Stop position, which may be almost horizontal, is stored, the load part can be moved along the mast, in particular due to its inertia, when the truck is on an accelerating or decelerating transport vehicle.
  • the invention further relates to an industrial truck, in particular a commissurer, which comprises a tilting mechanism according to the invention.
  • masts of the known type which are pivoted by means of cranes or forklifts between operating position and stop position
  • the mast mounted in standby position load part, in particular the load-carrying fork in the stop position of the mast projecting from this upwards so that it Transporting the truck is usually required to remove the fork from its operational readiness position on the mast and transported separately to the truck.
  • this removal of the load-picking fork during transport preparation also implies the re-attachment of the load-receiving fork during the commissioning of the truck after its delivery, which is both time-consuming and thus leads to increased costs.
  • the tilting mechanism according to the invention is used, which makes it possible to fix the mast in any pivot position between the operating position and the stop position.
  • the transport position which corresponds to any pivot position of the mast, selected such that both the pivoted mast and the pivoted load-receiving means are arranged below a certain transport height relative to the ground.
  • the transport height depends on how much space in the vertical direction in a transport vehicle or on a transport vehicle to be mounted container (container) is present.
  • a highest point of the pivoted mast in the transport position is higher than a highest point of the pivoted load-receiving means.
  • a transport position allows, for example, that several prepared for transport trucks with pivoted masts and it arranged in operating position lifting devices can be positioned one behind the other on a transport vehicle, the load-carrying means of a rear truck under the pivoted backwards, upper portion of a mast of a front truck movable is, so that two trucks can be stored one behind the other to save space.
  • a minimum possible transport height can be achieved if, in the transport position, a highest point of the pivoted mast and a highest point of the pivoted lifting device to substantially the same transport height. This state is achieved in exactly one pivotal position, in which an imaginary line between the highest point of the pivoted mast and the highest point of the swiveled lifting device runs substantially parallel to the ground.
  • Fig. 1 shows a truck in the form of a picker 10 in a schematic side elevation view.
  • the commissioner 10 comprises a vehicle frame 12, on which a mast 14 is mounted pivotably about a rotation axis D.
  • a driver's cab 16 is mounted, which is displaceable along the telescopic mast 14 in the vertical direction V.
  • a load-receiving fork 18 is mounted, on the pallets and the like. Can be added.
  • the order picker 10 is in the FIG. 1 shown in its operating position in which the mast 14 extends substantially vertically relative to the substrate 20 upwards.
  • the load-receiving fork 18 is arranged in an operational readiness position on the driver's cab 16 or on the mast 14, ie a position in which it is mounted and operative in normal operation of the order-picker 10.
  • the order picker 10 has on one side a tilting mechanism 22 for the mast 14.
  • This tilting mechanism 22 comprises a threaded rod 24, which is fastened in an upper region 26 of the vehicle frame 12 or a lining 28.
  • the threaded rod 24 on the one hand about a pivot axis S relative to the vehicle frame 12 pivotally mounted and on the other hand rotatably mounted about its longitudinal axis L.
  • the hub side end 30 of the threaded rod 24 is passed through a nut 32 which is rotatable relative to the mast 14 about a nut rotation axis MD.
  • the mast 14 by the storage in the region of the rotation axis D and the articulation points 36, 38 on the frame 12 and the mast 14 of the tilting mechanism 22 securely in the illustrated any pivot position, which may also be a transport position held. Due to the threaded engagement between nut 32 and threaded rod 24 prevents the mast 14 performs any rocking movements in the pivot positions.
  • pivot position corresponds to a position at which mounted on the mast 14 in the operating position load receiving fork 18, a minimum transport height TH is achieved because a highest point 40 of the mast 14 and a highest point 42 of the pivoted load-receiving fork 18 at substantially the same heights HG or HL are above the ground 20. In such a transport position, the heights TH, HG and HL are thus substantially the same and the order-picker 10 can also be accommodated with the load-receiving fork 18 attached thereto in a transport container or on a transport vehicle.
  • Fig. 3 shows in a perspective view obliquely from above the tilting mechanism 22 in the pivoted position of the mast 14. From this view it can be seen that the nut 32 by means of a pivot bearing 44 which is arranged on a plate 46, is supported on the mast 14. The plate 46 is bolted to the mast 14 by screws 48 and has a protruding tab 50 which extends laterally of the cab 16. This tab 50 is used to be able to lock a movement of the driver's cab 16 in the pivoted state of the mast 14 by, for example, corresponding bores being provided in the frame of the driver's cab 16, which are aligned with the two bores 52 of the tab 50, and by means of a screwdriver.
  • a locking or securing the cab 16 relative to the mast 14 can be done.
  • a transport lock or lock be designed differently for the driver's cab 16 or be provided at another point of the mast.
  • Essential in the present embodiment is that the articulation of the tilting mechanism 22 and the lock for the driver's cab 16 is achieved by means of the same plate 46, so that when attaching the tilting mechanism 22 on the order picker 10 for pivoting the mast 14 meaningful locking the cab with the same is prepared or can be carried out.
  • Fig. 4 shows in perspective schematic detail view of the linkage 36 of the tilting mechanism 22 on the frame of the order picker 10.
  • the frame 12 is for the articulation of the tilting mechanism before a flange 54 upwards, through which a screw bolt 56 is guided, which is in threaded engagement with a threaded rod receiving block 58.
  • the threaded rod receiving block 58 is pivotable relative to the flange 54 about the pivot axis S.
  • the longitudinal axis L of the threaded rod 24 extends orthogonally to this pivot axis S.
  • the threaded rod 24 is passed through the threaded rod receiving block 58 and has at the lower end the screw head 34, which is rotatable relative to the threaded rod receiving block 58 about the longitudinal axis L.
  • the screw head 34 and the threaded rod 24 are in rotational engagement with each other, so that upon rotation of the screw head 34, the threaded rod 24 is rotated about its longitudinal axis L.
  • an (optional) thrust bearing 35 to reduce the drive torque and a spherical washer 37 with a correspondingly designed conical socket in the threaded rod receiving block 58 to compensate for any misalignment or manufacturing tolerances.
  • Fig. 5 is an enlarged perspective detail view of the linkage 38 of the tilting mechanism 22 on the mast 14.
  • the threaded rod 24 extends through the relative to the mast 14 rotatably mounted nut 32. This is secured by means of a plate 46 on the mast 14.
  • the plate 46 has an S-shaped tab 50, which serves to lock the driver's cab 16.
  • Fig. 6 In such a pivoting of the mast 14 with load picker 18 remaining on the order picker 10 in operational readiness position, it is possible that two or more order pickers 10 can be arranged one behind the other in a space-saving manner, the transport height TH required for this purpose is directed to the highest point 40 of the pivoted mast 14.
  • the highest point 40 of the mast 14 slightly higher than the highest point 42 of the pivoted load-receiving fork 18 (HG> HL), so that a rear order picker 10 'with its load-receiving fork 18' below a rear portion of the pivoted mast 14 of a front order picker 10th can be placed.
  • the load-receiving fork 18 can be removed for transport from the mast 14 and the driver's cab 16, so that an even more compact arrangement of several order pickers in a row with pivoted masts 14 is possible at the expense of the appropriate time.
  • the presented tilting mechanism thus provides an optimal basis for optimal transport situations optimum pivoting positions of the mast 14 so that the space required for the (or) to be transported (s) truck (s) can be minimized.
  • a minimization of the space requirement can be achieved in an advantageous manner by the proposed tilting mechanism, which allows any pivoting or transport positions of the mast.
  • the time required for the preparation of the transport and the subsequent commissioning of the truck is significantly reduced by the proposed tilting mechanism, resulting in a cost savings.
  • Fig. 7 shows the order picker 10 with the mast 14 in stop position, in which the nut 32 is located at the frame-side end of the threaded rod 24.
  • the height HL of the highest point 42 of the load receiving fork 18 is greater than the height HG of the highest point 40 of the mast 14 and thus determines the transport height TH fixed. If the load-receiving fork 18 is not mounted on the mast 14 in such a transport position, the required transport height depends on the highest point 60 of the driver's cab 16.

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  • 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 (14)

  1. Mécanisme de basculement pour un châssis de levage (14) d'un chariot de manutention (10), dans lequel le châssis de levage (14) est monté de façon pivotante autour d'un axe de rotation (D), sur le bâti (12) du chariot de manutention (10), entre une position de fonctionnement au moins approximativement verticale et une position de butée approximativement horizontale inclinée par rapport à la verticale, dans lequel le mécanisme de basculement (22) peut être monté de façon articulée (36, 38) sur le châssis de levage (14) et sur le bâti (12, 54) du chariot de manutention (10) et est réalisé de telle manière que le châssis de levage (14) puisse être fixé dans des positions basculées quelconques entre la position de fonctionnement et la position de butée, caractérisé en ce que le mécanisme de basculement comprend une barre filetée (24) s'étendant entre les deux articulations (36, 38), et en ce qu'il peut être enlevé lorsque le châssis de levage (14) se trouve en position de fonctionnement et il n'est pas nécessaire pour le fonctionnement du chariot de manutention.
  2. Mécanisme de basculement selon la revendication 1, caractérisé en ce que l'articulation (38) du mécanisme de basculement (22) sur le châssis de levage (14) peut être disposée, dans la position de fonctionnement, au-dessus de l'axe de rotation (D) du châssis de levage (14).
  3. Mécanisme de basculement selon la revendication 1 ou 2, caractérisé en ce que l'articulation (36) du mécanisme de basculement (22) est prévue à une partie supérieure (54) du bâti (12) du chariot de manutention (10).
  4. Mécanisme de basculement selon la revendication 2 et 3, caractérisé en ce que, lorsque le châssis de levage (14) se trouve dans la position de fonctionnement, la distance entre l'axe de rotation (D) et l'articulation (38) au châssis de levage (14) correspond essentiellement à la distance entre l'axe de rotation (D) et l'articulation (36) au bâti (12).
  5. Mécanisme de basculement selon l'une quelconque des revendications précédentes, caractérisé en ce que l'articulation (38) au châssis de levage (14) comprend un écrou (32) pouvant tourner par rapport au châssis de levage (14) autour d'un axe (MD) orthogonal à la barre filetée (24) et avec lequel la barre filetée (24) se trouve en engagement vissé.
  6. Mécanisme de basculement selon la revendication 5, caractérisé en ce que l'écrou (32) peut être fixé au châssis de levage (14) de façon rotative autour de l'axe (MD) au moyen d'un boulon fileté.
  7. Mécanisme de basculement selon la revendication 5 ou 6, caractérisé en ce que l'écrou (32) peut se déplacer le long de la barre filetée (24) par suite de la rotation de celle-ci, de telle manière que le châssis de levage (14) puisse pivoter de la position de fonctionnement à la position de butée et inversement.
  8. Mécanisme de basculement selon l'une quelconque des revendications précédentes, caractérisé en ce que la barre filetée (24) peut être montée sur le bâti (12) du chariot de manutention (10) de façon librement rotative autour de son axe longitudinal (L) et de façon pivotante par rapport au bâti (12).
  9. Mécanisme de basculement selon la revendication 8, caractérisé en ce que la barre filetée (24) présente à son extrémité côté bâti une tête de vis (34), à laquelle on peut appliquer un outil pour mettre la barre filetée (24) en mouvement de rotation autour de son axe longitudinal (L).
  10. Mécanisme de basculement selon l'une quelconque des revendications précédentes, caractérisé en ce que des moyens de blocage (50, 52) peuvent être disposés dans la région de l'articulation (38) sur le châssis de levage (14), au moyen desquels une partie de charge (16, 18) déplaçable le long du châssis de levage (14) est fixée contre un déplacement dans une position du châssis de levage (14) basculée hors de l'état de fonctionnement.
  11. Mécanisme de basculement selon la revendication 10, caractérisé en ce que l'articulation (44) de l'écrou (32) et les moyens de blocage (50) sont reliés les uns aux autres (46) de telle manière qu'ils puissent être fixés ensemble au châssis de levage (14).
  12. Chariot de manutention, en particulier chariot de préparation de commandes (10), comprenant un mécanisme de basculement (22) selon l'une quelconque des revendications précédentes.
  13. Procédé pour transporter un chariot de manutention selon la revendication 12, dans lequel on fait pivoter le châssis de levage (14) du chariot de manutention à transporter (10) dans une position de transport inclinée par rapport à la position de fonctionnement et on le fixe dans cette position de transport, dans lequel des moyens de réception de charge (16, 18), en particulier une fourche de réception de charge (18), restent installés, pendant le transport, dans une position prête à fonctionner sur le châssis de levage (14).
  14. Procédé selon la revendication 13, caractérisé en ce que l'on choisit la position de transport de telle manière qu'aussi bien le châssis de levage (14) basculé que les moyens de réception de charge (16, 18) basculés soient disposés en dessous d'une hauteur de transport déterminée (TH) par rapport au sol (20), dans lequel un point le plus haut (40) du châssis de levage (14) basculé est de préférence, dans la position de transport, situé plus haut qu'un point le plus haut (42) des moyens de réception de charge (18) basculés, ou dans lequel un point le plus haut (40) du châssis de levage (14) basculé et un point le plus haut (42) des moyens de réception de charge (18) basculés sont de préférence, dans la position de transport, situés essentiellement à la même hauteur de transport (TH, HG, HL).
EP08020757.4A 2007-11-30 2008-11-28 Mécanisme de basculement pour un châssis de levage d'un chariot de manutention et procédé de transport pour un chariot de manutention Active EP2065334B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007057678A DE102007057678A1 (de) 2007-11-30 2007-11-30 Kippmechanismus für ein Hubgerüst eines Flurförderzeugs und Transportverfahren für ein Flurförderzeug

Publications (2)

Publication Number Publication Date
EP2065334A1 EP2065334A1 (fr) 2009-06-03
EP2065334B1 true EP2065334B1 (fr) 2013-09-25

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US (1) US8453798B2 (fr)
EP (1) EP2065334B1 (fr)
DE (1) DE102007057678A1 (fr)

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US8505691B2 (en) * 2007-12-04 2013-08-13 Belle Technologies, Llc Forklift shipping and handling apparatus
DE102011001518A1 (de) * 2011-03-24 2012-09-27 Dematic Gmbh Regalbediengerät
EP3130556B1 (fr) * 2015-08-12 2019-01-23 Linde Material Handling GmbH Chariot élévateur avec cabine basculante et procédé permettant de réduire la hauteur de chargement de conteneur du chariot élévateur à fourche
CN106809770B (zh) * 2017-03-01 2022-08-26 青岛科技大学 一种货叉横纵向间距可调的自动翻转装置
EP4365125A3 (fr) * 2017-11-06 2024-08-21 Crown Equipment Corporation Système de superposition de véhicules industriels

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Also Published As

Publication number Publication date
US8453798B2 (en) 2013-06-04
US20090142174A1 (en) 2009-06-04
DE102007057678A1 (de) 2009-06-04
EP2065334A1 (fr) 2009-06-03

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