EP3466868B1 - Chariot de manutention - Google Patents

Chariot de manutention Download PDF

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Publication number
EP3466868B1
EP3466868B1 EP18196427.1A EP18196427A EP3466868B1 EP 3466868 B1 EP3466868 B1 EP 3466868B1 EP 18196427 A EP18196427 A EP 18196427A EP 3466868 B1 EP3466868 B1 EP 3466868B1
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EP
European Patent Office
Prior art keywords
load
industrial truck
scissor
truck according
drive part
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
EP18196427.1A
Other languages
German (de)
English (en)
Other versions
EP3466868A1 (fr
Inventor
Fabio Mariotti
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.)
Still SpA
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Still SpA
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
Priority claimed from DE102018109548.1A external-priority patent/DE102018109548A1/de
Application filed by Still SpA filed Critical Still SpA
Publication of EP3466868A1 publication Critical patent/EP3466868A1/fr
Application granted granted Critical
Publication of EP3466868B1 publication Critical patent/EP3466868B1/fr
Active legal-status Critical Current
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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
    • B66F9/065—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 non-masted
    • 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
    • B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
    • B66F7/0625—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement with wheels for moving around the floor
    • 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
    • B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
    • B66F7/065—Scissor linkages, i.e. X-configuration

Definitions

  • the invention relates to an industrial truck with a drive part and with a load part that can be raised and lowered relative to the drive part, which comprises a load frame supported on a roadway with at least one load roller, the load part being able to be raised relative to the drive part by means of a lifting device and the lifting device comprising a scissor mechanism wherein the scissors mechanism comprises at least two crossing scissors members, a first scissors member having a first end rotatably attached to the load frame and being provided with the load roller at the second end, and a second scissors member having a first end supported on the drive member and a second End is slidably arranged on the underside of the load frame, wherein the second scissors member is supported with the first end on a support member.
  • Such industrial trucks are known as lift trucks or order pickers. These industrial trucks can be designed as pedestrian-controlled devices, as driver-devices or as driver-seat devices.
  • Generic industrial trucks designed as scissor lift trucks have a scissor mechanism which has at least two crossing scissor members in order to lift the load part designed as a load frame and support it on the roadway via the load roller.
  • Such a scissor lift truck is from DE 198 16 755 A1 known.
  • a first scissor link of the crossing scissor links has a first end rotatably attached to the load frame and a second end provided with the load roller.
  • a second scissor link of the crossing scissor links has a first end supported on the drive member and a second end slidably disposed on the underside of the load frame.
  • the first end of the second scissor link is rotatably arranged on a rotary axis which is stationary on a drive part of the scissor lift truck.
  • the axis of rotation can be formed a bearing pin which is attached to the drive part and on which the first end of the second scissor member is rotatably mounted.
  • the present invention is based on the object of further developing an industrial truck of the type mentioned in such a way that the disadvantages mentioned are avoided.
  • the support element is arranged on the drive part so that it can be adjusted in the vertical direction. With the support element, the height of the support of the first end of the second scissor link on the drive part can be adjusted and thus an adjustability of the height of the load frame can be achieved.
  • the support element is arranged adjustably on a vertical frame section of the drive part.
  • the support element can be adjusted and adjusted in the vertical direction in a simple manner.
  • the support element is fastened to the vertical frame section by means of at least one fastening screw and the Fastening screw is guided in a vertically arranged slot of the vertical frame section.
  • the fastening screw can thus be moved in the vertically arranged elongated hole and the support element can thereby be adjusted in a simple manner in the vertical direction.
  • Such a long hole can easily be made in the vertical frame section of the drive part.
  • this enables easy adjustability of the support element, since the support element can be easily adjusted to the correct height position via the fastening screw guided in the slot and the fastening screw can then be tightened in order to fasten the support element to the drive part.
  • an adjustment element in particular an adjustment screw
  • the support element can be adjusted in height in a simple and quick manner.
  • An adjusting element, in particular an adjusting screw is therefore provided for adjusting the support element.
  • the second scissor link is provided with a bent end area at the first end.
  • the end area is preferably bent upwards in the vertical direction.
  • the support of the first end of the second scissor link can be arranged higher on the drive part in the vertical direction and a higher ground clearance of the industrial truck is achieved at the first end of the second scissor link. Due to the higher ground clearance, the industrial truck can negotiate higher ramp angles on a ramp and the risk of the scissor links colliding with steps in the roadway or obstacles on the roadway is reduced.
  • the bent end region of the second scissor link is particularly advantageously in operative connection with an inclined support surface formed on the support element. The bent end area and thus the first end of the second scissor link can thus move over the lifting range of the load part along the inclined support surface, so that the problem arising from the above-described geometrical conditions of the scissor mechanism is solved.
  • the inclined support surface is particularly advantageously formed on the underside of the support element. This enables the support surface on the support element to be manufactured easily and the support element to be highly stable.
  • a roller in particular a metal roller, is rotatably mounted on the bent end area of the second scissor link, with which the bent end area is supported on the support surface.
  • the rotatable roller on the lifted end area of the second scissor link can move along the inclined support surface of the support element, with the movement of the roller along the support surface of the support element compensating for the asymmetry of the scissor mechanism resulting from the lifted end area of the second scissor link.
  • the inclination of the inclined support surface is selected and designed in such a way that a substantially vertical movement of the load part with the load frame results over the entire lifting range.
  • a retaining device which holds the bent end area of the second scissor link in contact with the support surface of the support element. This can cause a wrong Positioning or incorrect movement of the bent end portion of the second scissor member can be prevented on the support surface of the support member, which can result, for example, in misuse of the truck.
  • the retaining device is formed by a retaining plate which is arranged on the support element and which holds the bent end region of the second scissor link in contact with the support surface.
  • the retaining plate is provided with an elongated hole which is arranged parallel to the sloping support surface, a shaft holding the roller being guided in the elongated hole.
  • the roller With a slot in which the shaft is guided, on which the roller arranged on the lifted end area of the second scissor link is arranged, the roller can be held in contact with the inclined support surface and its lifting from the support surface of the support element can be limited in a simple manner .
  • the load frame comprises two laterally spaced load forks, with two crossing scissor links each having a support element being provided on each load fork.
  • the two support elements which are preferably both arranged on the drive part so that they can be adjusted in the vertical direction, make it easy to adjust the height of the two load forks and adjust the position of the two load forks to one another and thus correctly align the two load forks with one another.
  • the industrial truck is designed as an order picker with a driver's workplace arranged adjacent to the load part in the longitudinal direction.
  • the increased ground clearance makes it possible to drive the industrial truck over higher ramp angles of a ramp.
  • the figure 1 shows an industrial truck 1 according to the invention.
  • the industrial truck 1 is designed as an order picker.
  • the industrial truck 1 has a drive part A and a load part B that can be raised or lowered relative to the drive part A.
  • the drive part A has a frame 2 as a supporting component.
  • the load part B has a load frame 3 formed by two load forks 4a, 4b as a supporting component.
  • the two load forks 4a, 4b are spaced apart from one another in the transverse direction of the vehicle.
  • An electrically driven and steerable drive wheel is arranged under a hood 5 in the front area of the drive part A, with which the drive part A is supported on a roadway. Further units are arranged under the hood 5 on the frame 2, for example a power electronics unit and an electric lifting motor for driving a hydraulic pump, by means of which a lifting device for raising and lowering the load frame 3 relative to the frame 2 can be supplied.
  • a battery compartment 6 for accommodating a battery pack is formed on the frame 2 in the longitudinal direction of the industrial truck 1 adjacent to the hood 5 .
  • a driver's workplace 7 is formed, which is formed by a driver's platform, not shown.
  • a vertical frame section 8 is arranged adjacent to the driver's workplace 7, in which the load frame 3, which can be raised and lowered, is guided vertically.
  • the load forks 4a, 4b of the load frame 3 and thus the load part B are supported on the roadway by means of load rollers 9a, 9b.
  • the load roller 9a is assigned to the load fork 4a and the load roller 9b to the load fork 4b.
  • the load rollers 9a, 9b can each be designed as a single roller or, as in the exemplary embodiment shown, as a tandem roller.
  • the load frame 3 has the horizontally arranged load forks 4a, 4b and a vertically arranged load carriage 10 which is guided in vertically arranged profiles 11 of the vertical frame section 8 of the frame 2 in a manner not shown in detail.
  • a lifting device for raising and lowering the load frame 3 relative to the frame 2 comprises a hydraulic cylinder 12 which is in operative connection with the frame 2 and the vertical load section 10 of the load frame 3 .
  • the lifting device also includes a scissor mechanism 15, which has at least two crossing scissor members 16a, 17a or 16b, 17b.
  • the two crossing scissor members 16a, 17a are provided on the load fork 4a, and the two crossing scissor members 16b, 17b are provided on the load fork 4b.
  • the scissor members 16a, 17a and the scissor members 16b, 17b each intersect in an axis 18 on which the scissor members 16a, 17a or 16b, 17b are rotatably connected to one another.
  • the first scissor link 16a, 16b is fastened at a first end to the load frame 3 so as to be rotatable about an axis of rotation D and is provided at the second end with the load roller 9a, 9b.
  • the second scissor link 17a, 17b is supported with a first end on the drive part 2 and is slidably arranged with a second end on the underside of the load fork 4a, 4b.
  • a roller can be rotatably mounted on the second end of the second scissor link 17a, 17b, which is operatively connected to the underside of the load fork 4a, 4b.
  • the second scissors member 17a, 17b is connected to the first end - as in connection with the Figures 2 to 4 is shown in more detail - each on a support element 20a, 20b supported, which according to the invention is arranged adjustable in the vertical direction V on the drive part 2.
  • the support element 20a, 20b is arranged adjustably on the vertical frame section 8 of the drive part A in the exemplary embodiment shown.
  • the support element 20a, 20b is each - as in the Figures 3 and 4 is shown in more detail - fastened to the vertical frame section 8 by means of at least one fastening screw 21 , the fastening screw 21 being guided in each case in a vertically arranged slot 22 of the vertical frame section 8 .
  • an adjustment element 23 for example an adjustment screw, can be provided, which is arranged between the support element 20a or 20b and the vertical frame section 8.
  • the support element 20a, 20b can thus be adjusted in the vertical direction V and its vertical position can be adjusted by actuating the adjustment element 23 by means of the fastening screws 21 arranged and guided in a longitudinally displaceable manner in the elongated holes 22.
  • the first end of the second scissor elements 17a, 17b is operatively connected to the associated support element 20a, 20b.
  • the vertical adjustment and adjustability of the support elements 20a, 20b thus enables a geometry adjustment of the scissors members 16a, 16b, 17a, 17b of the scissor mechanism 15.
  • the vertical adjustment and adjustability of the support elements 20a, 20b makes it possible here that the height of the two load forks 4a, 4b set and adjust the position of the two forks 4a, 4b to each other and thus align the two forks 4a, 4b correctly to each other.
  • the vertical position of the support elements 20a, 20b can be adjusted via the adjusting elements 23, even if the industrial truck 1 has already been assembled.
  • the industrial truck 1 should only be parked on a level road surface. Adjusting the vertical position of the Supporting elements 20a, 20b can be carried out, for example, by the manufacturer of the industrial truck 1 at the end of the assembly line and/or by the customer in the event of maintenance and service.
  • the adjusting elements 23 are easily accessible for adjusting the vertical position of the support elements 20a, 20b when the forks 4a, 4b - as in FIG figure 1 shown - are raised.
  • the fastening screws 21 only have to be loosened, so that by actuating the adjustment elements 23 the corresponding support element 20a, 20b can be adjusted and adjusted in height.
  • the fastening screws 21 slide in the vertical elongated holes 22 of the vertical frame section 8. After the correct height position of the corresponding support element 20a, 20b has been found, only the fastening screws 21 of the support element 20a or 20b have to be tightened again.
  • the second scissor link 17a, 17b is provided with a bent end region 30a, 30b at the first end with which the scissor link 17a, 17b is supported on the support element 20a, 20b.
  • the end portion 30a, 30b is bent upwards in the vertical direction. This enables increased ground clearance of the industrial truck 1 in the area of the first ends of the second scissor elements 17a, 17b.
  • the bent end region 30a, 30b of the second scissor link 17a, 17b is in each case in operative connection with an inclined support surface 31a, 31b formed on the support element 20a, 20b.
  • the inclined support surface 31a, 31b is inclined with respect to a horizontal plane, the inclined support surface 31a, 31b being inclined downward from the vertical frame portion 8 toward the load part B.
  • the inclined support surface 31a, 31b is preferably formed on the underside of the support element 20a, 20b.
  • a roller 32 for example a metal roller or a metal bearing, is rotatably mounted on the bent end area 30a, 30b of the second scissor link 17a, 17b supported on the support surface 31a, 31b.
  • the rotatable roller 32 on the lifted end region 30a, 30b of the second scissor link 17a, 17b can move along the inclined support surface 31a, 31b of the support element 20a, 20b, as in FIG figure 3 is indicated by the arrow R.
  • the movement of the roller 32 along the support surface 31a, 31b of the support element 20a, 20b makes it possible to compensate for the asymmetry of the scissor mechanism 15 resulting from the raised end region 30a, 30b of the second scissor link 17a, 17b.
  • the inclination of the inclined support surface 31a, 31b is selected and designed in such a way that over the entire lifting range of the load part B there is a substantially vertical movement of the load frame 3 with the load forks 4a, 4b.
  • a retaining device 40 is provided in each case, which holds the roller 32 arranged on the bent end region 30a, 30b of the second scissor link 17a, 17b in contact with the support surface 31a, 31b and limits its lifting from the support surface 31a, 31b of the support element 20a, 20b.
  • the retaining device 40 is formed by a holding plate 41 which is arranged on the supporting element 20a, 20b and which holds the roller 32 in contact with the supporting surface 31a, 31b. In the exemplary embodiment shown, the retaining device 40 is arranged on a side surface of the support element 20a or 20b.
  • the retention device 40 is fastened to the support element 20a or 20b, for example, by means of a plurality of fastening screws 42.
  • the retaining plate 41 is provided with a slot 43 which is arranged parallel to the sloping support surface 31a, 31b, a shaft 44 holding the roller 32 being guided in the slot 43 and with which the roller 32 is held at the bent end region 30a, 30b is arranged.
  • the width of the elongated hole 43 essentially corresponds to the diameter of the shaft 44. The roller 32 can thus only move in a direction of movement R formed by the longitudinal direction of the elongated hole 43.

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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)
  • Handcart (AREA)

Claims (13)

  1. Chariot de manutention (1), comprenant une partie d'entraînement (A) et une partie de levage (B) pouvant être relevée et abaissée par rapport à la partie d'entraînement et comprenant un cadre de levage (3) prenant appui sur une voie de roulement par au moins un galet de charge (9a ; 9b), dans lequel la partie de levage (B) peut être relevée par rapport à la partie d'entraînement (A) au moyen d'un dispositif de levage et le dispositif de levage comprend un mécanisme à ciseaux (15), dans lequel le mécanisme à ciseaux (15) présente au moins deux bras de ciseaux (16a, 17a ; 16b, 17b) qui se croisent, dans lequel un premier bras de ciseaux (16a ; 16b) est fixé en rotation au cadre de levage (3) par une première extrémité et est pourvu du galet de charge (9a ; 9b) à la deuxième extrémité, et dans lequel un deuxième bras de ciseaux (17a ; 17b) prend appui par une première extrémité sur la partie d'entraînement (A) et est disposé de manière mobile sur la face inférieure du cadre de levage (3) par une deuxième extrémité, dans lequel le deuxième bras de ciseaux (17a ; 17b) prend appui sur un élément d'appui (20a ; 20b) par la première extrémité,
    caractérisé en ce que l'élément d'appui (20a ; 20b) est disposé sur la partie d'entraînement (A) de manière réglable dans la direction verticale (V).
  2. Chariot de manutention selon la revendication 1, caractérisé en ce que l'élément d'appui (20a ; 20b) est disposé de manière réglable sur une partie de cadre verticale (8) de la partie d'entraînement (A).
  3. Chariot de manutention selon la revendication 2, caractérisé en ce que l'élément d'appui (20a ; 20b) est fixé à la partie de cadre verticale (8) au moyen d'une vis de fixation (21) et la vis de fixation (21) est guidée dans un trou oblong (22) de la partie de cadre verticale (8), disposé verticalement.
  4. Chariot de manutention selon la revendication 2 ou 3, caractérisé en ce qu'un élément de réglage (23), en particulier une vis de réglage, est prévu qui est disposé entre l'élément d'appui (20a ; 20b) et la partie de cadre verticale (8).
  5. Chariot de manutention selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le deuxième bras de ciseaux (17a ; 17b) est muni d'une zone d'extrémité arrondie (30a ; 30b) à la première extrémité.
  6. Chariot de manutention selon la revendication 5, caractérisé en ce que la zone d'extrémité arrondie (30a ; 30b) du deuxième bras de ciseaux (17a ; 17b) se trouve en relation fonctionnelle avec une surface d'appui inclinée (31a ; 31b) réalisée sur l'élément d'appui (20a ; 20b).
  7. Chariot de manutention selon la revendication 6, caractérisé en ce que la surface d'appui inclinée (31a ; 31b) est réalisée sur la face inférieure de l'élément d'appui (20a ; 20b).
  8. Chariot de manutention selon la revendication 6 ou 7, caractérisé en ce que dans la zone d'extrémité arrondie (30a ; 30b) du deuxième bras de ciseaux (17a ; 17b) un galet (32) est monté rotation par lequel la zone d'extrémité arrondie (30a ; 30b) prend appui sur la surface d'appui (31a ; 31b).
  9. Chariot de manutention selon l'une quelconque des revendications 6 à 8, caractérisé en ce qu'un dispositif de retenue (40) est prévu qui maintient la zone d'extrémité arrondie (30a ; 30b) du deuxième bras de ciseaux (17a ; 17b) en butée contre la surface d'appui (31a ; 31b).
  10. Chariot de manutention selon la revendication 9, caractérisé en ce que le dispositif de retenue (40) est formé par une tôle de maintien (41) disposée sur l'élément d'appui (20a ; 20b) qui maintient la zone d'extrémité arrondie (30a ; 30b) du deuxième bras de ciseaux (17a ; 17b) en butée contre la surface d'appui (31a ; 31b).
  11. Chariot de manutention selon la revendication 9 ou 10, caractérisé en ce que le dispositif de retenue (40) est pourvu d'un trou oblong (43) qui est disposé en parallèle à la surface d'appui inclinée (31a ; 31b), dans lequel un arbre (44) maintenant le galet (32) est guidé dans le trou oblong (43).
  12. Chariot de manutention selon l'une quelconque des revendications 1 à 11, caractérisé en ce que le cadre de levage (3) comprend deux fourches de levage (4a ; 4b) latéralement espacées, dans lequel deux bras de ciseaux (16a, 17a ; 16b, 17b) qui se croisent, avec respectivement un élément d'appui (20a ; 20b), sont prévus sur chaque fourche de levage (4a ; 4b).
  13. Chariot de manutention selon l'une quelconque des revendications 1 à 12, caractérisé en ce qu'il est réalisé sous forme de chariot de préparation de commandes avec un poste de travail de conducteur (7) disposé à proximité de la partie de levage (B) dans la direction longitudinale.
EP18196427.1A 2017-10-04 2018-09-25 Chariot de manutention Active EP3466868B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017122955 2017-10-04
DE102018109548.1A DE102018109548A1 (de) 2017-10-04 2018-04-20 Flurförderzeug

Publications (2)

Publication Number Publication Date
EP3466868A1 EP3466868A1 (fr) 2019-04-10
EP3466868B1 true EP3466868B1 (fr) 2023-08-02

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ID=63683678

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Application Number Title Priority Date Filing Date
EP18196427.1A Active EP3466868B1 (fr) 2017-10-04 2018-09-25 Chariot de manutention

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EP (1) EP3466868B1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111689436B (zh) * 2020-06-19 2022-04-19 浙江迈睿机器人有限公司 移载类叉车机器人

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2765565B1 (fr) * 1997-07-04 1999-08-20 Armtop Elevateur a fourche
DE19816755B4 (de) 1998-04-16 2010-06-02 Franz Kahl Gmbh Scherenhubwagen mit einem elektrohydraulischen Antrieb

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