EP1270496A1 - Fördergerät für Lasten wie Hubstapler - Google Patents

Fördergerät für Lasten wie Hubstapler Download PDF

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Publication number
EP1270496A1
EP1270496A1 EP02291537A EP02291537A EP1270496A1 EP 1270496 A1 EP1270496 A1 EP 1270496A1 EP 02291537 A EP02291537 A EP 02291537A EP 02291537 A EP02291537 A EP 02291537A EP 1270496 A1 EP1270496 A1 EP 1270496A1
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EP
European Patent Office
Prior art keywords
machine
transmission
wheels
wheel
load handling
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.)
Withdrawn
Application number
EP02291537A
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English (en)
French (fr)
Inventor
Michel Amiand
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP1270496A1 publication Critical patent/EP1270496A1/de
Withdrawn legal-status Critical Current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
    • B66F9/075—Constructional features or details
    • B66F9/07568—Steering arrangements
    • 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
    • B66F9/10—Masts; Guides; Chains movable in a horizontal direction relative to truck

Definitions

  • the present invention relates to a self-propelled machine handling loads such as stacker, preferably electric.
  • a handling loads of the type comprising a chassis consisting of at least two substantially parallel beams surmounted by a lifting and handling device charges and connected at one of their ends by a structure housing at least partially means of control, steering and propulsion of the machine, this chassis being carried by three wheels forming between them a isosceles triangle, the two so-called front wheels of the machine being arranged in the vicinity of the free ends of the side rails, the rear wheel, generally driving, extending directly above the structure.
  • Load handling devices of the above type are well known to those versed in this art.
  • these vehicles with an accompanying or on-board driver include a rear driving and steering wheel and two front wheels including one is mad while the other is fixed and positioned with its axis of rotation perpendicular to the axis longitudinal beams to allow movement frontal of the machine.
  • maneuvering such a machine is tedious due to the large turning radii.
  • Such maneuvers become impossible when the machine moves in an aisle lined with shelving and must handle loads of large dimensions, such as panels.
  • the document FR-A-2,319,521 describes a carriage not self-propelled with four wheels, each wheel being connected to the trolley by an articulated arm whose articulation can be immobilized in a determined position.
  • Front wheels are also permanently connected to the column of direction by endless transmissions so that the front wheels are constantly steer wheels.
  • the rear wheels can be steered by via disengageable transmissions coupled to front wheel transmissions.
  • An object of the present invention is to provide a machine self-propelled load handling machine whose design allows handling of large loads, including included inside aisles lined with shelving, this machine with a short turning radius, independently of its lateral or frontal movement mode.
  • the invention relates to a self-propelled machine handling loads, such as stacker, preferably electric, of the type comprising a chassis consisting of at least at least two substantially parallel beams surmounted by a device for lifting and handling loads and connected at one of their ends by a structure housing at at least partially control, steering and of propulsion of the machine, this chassis being carried by three wheels forming an isosceles triangle between them, the two so-called front wheels of the machine being arranged in the vicinity free ends of the side members, the rear wheel, generally motive, extending directly above the structure, characterized in that at least one of the wheels front and rear wheel of the craft are connected to the direction of the machine via a transmission differentiated, said transmissions being selectively can be activated via a control unit selecting a mode of operation of the machine for return the rear wheel or respectively the wheel or wheels front steering, these same wheels being, in the inactivated state of their transmission connecting them to the direction of the machine, arranged in a predetermined orientation position constant to cooperate in the operation of the machine mov
  • the axis of rotation of at least one front wheels is arranged perpendicular to the axis longitudinal beams to allow movement front of the vehicle by means of the rear steering wheel and in that, in a second mode of operation of the gear corresponding to the activation of the transmission between a front wheel and the steering, the axis of rotation of the rear wheel of the machine is arranged parallel to the axis longitudinal beams to allow movement lateral of the machine by means of the front steering wheel.
  • the load handling device object of the invention, also called stacker or forklift, includes a chassis consisting of at least two beams 2 substantially parallel surmounted by a device 3 for lifting and handling of loads.
  • the two beams 2 are generally made up of hollow metal profiles.
  • These longitudinal members 2 are connected at one of their ends by a structure 4 at least partially housing the means of control, steering and propulsion 7, 8, 9 of the machine.
  • the machine is preferably electrically propelled.
  • the 4 structure of the craft can affect a lot of forms. In the examples shown, it is made up by a box, the machine being of the conductor type accompanying.
  • structure 4 can affect the shape of a caisson surmounted by a cabin, the handling machine then being of the on-board driver type.
  • the structure has on its face of the top three controllers 20 managing the functions hydraulic and allowing in particular the displacement goes up and lowering of the lifting device, retraction of the mast 16 lifting which will be described below and the inclination of the apron 14 which will also be described below.
  • the chassis of the machine 1 is carried by three wheels 5A, 5B, 6 forming between them an isosceles triangle.
  • the two 5A wheels, 5B said before the machine are arranged in the vicinity of free ends of the side members 2 and allow the support of side rails 2 on the ground while the rear wheel 6, generally motive, extends vertically above structure 4.
  • At least one 5A front wheels 5A, 5B and the rear wheel 6 of the machine 1 are connected to the direction 7, 8, 9 of the machine by via a differentiated transmission 10, 11, more particularly shown in Figure 2.
  • These transmissions 10, 11 can be selectively activated by through a control member 12, such as a reverser consisting of an electric pushbutton, selecting a mode of operation of the machine 1 to make the wheel rear 6 or respectively the front wheel or wheels 5A, 5B guidelines.
  • These same wheels are, in the inactivated state of their transmission connecting them to the direction 7, 8, 9 of the craft, arranged in a predetermined position for cooperate in the maneuvering of the next movable machine at minus two operating modes, one says displacement front, corresponding to arrow F in FIG. 1, the other says lateral displacement, corresponding to the arrow L in figure 1.
  • the axis of rotation of minus one 5A of the front wheels 5A, 5B of the machine is arranged perpendicular to the longitudinal axis of the side members 2 to authorize a frontal movement of the machine by means of the rear wheel 6 steering.
  • the axis of rotation of the rear wheel 6 of the machine 1 is arranged parallel to the longitudinal axis of the side members 2 to allow a lateral movement of machine 1 by means of the front wheel 5A director.
  • each front wheel 5A, 5B of the machine 1 is connected to the direction 7, 8, 9 of the machine by a transmission 10 selectively activable
  • these transmissions 10 between wheel before 5A, 5B and direction of the machine operate in synchronism to allow parallel movement and simultaneous front wheels 5A, 5B.
  • this front wheel 5B is a crazy wheel. This second embodiment is shown in the figures.
  • the direction of the machine is made up of a steering column 8 angularly movable by via an operating member 7 such as a drawbar or a steering wheel. This direction can be assisted by means of a servo-control shown in 9 in the figures for facilitate management handling.
  • Each transmission 10, 11 consists of a driving pulley 10A, 11A and a driven pulley 10B, 11B interconnected by an endless organ 13 such as a chain.
  • Each pulley driving 10A, 11A can be mechanically coupled to the column steering 8 by means of a clutch, electromagnetic preference, activated depending on the selected operation.
  • the angular movement of the steering column 8 / driving pulley 10A, 11A to the engaged state is transmitted by the endless member 13 to the driven pulley 10B, 11B thus angularly moving the wheel 5A, 6 to which the driven pulley is coupled so as to make this last director.
  • This configuration of transmission is more particularly represented at the figure 2.
  • the clutch can still be formed, as illustrated in FIG. 5, by a hydraulic jack 21 or tire cooperating with a loaded mechanical lock 22 by spring and axially displaceable parallel to the axis longitudinal of the steering column 8 to make secured to a driving pulley either from the column of transmission-activated steering, i.e. one fixed structure in the inactivated state of the transmission.
  • the management is made up, in addition to the column of direction 8, angularly movable by the operation 7, such as a drawbar or a steering wheel, of a plate 23 integral in rotation with column 8.
  • This plate is disposed between the driving pulleys 10A, 11A of transmissions 10, 11 so that the faces of the driving pulleys extend substantially parallel to the faces of the plate 23.
  • This plate 23 is permanently coupled to a servo-control shown at 9 in the figures.
  • the driving pulleys 10A, 11A are each doubled a fixed plate 24, 25.
  • a mechanical lock 22 extends to each time, parallel to column 8, between pulley driving 10A or 11A and plate 23 integral in rotation with column 8.
  • This lock 22 loaded by spring 26 and displaceable by a jack 21, can pass from a first position to a second position.
  • a first position shown at the top left of Figure 5, one of the ends of the lock 22 provided with a roller 27 rolls on the plate 23 integral in rotation with the column 8, while that its other end, also provided with a roller 28, secures the driving pulley 11A and the doubling plate 24 the pulley so as to lock the rear wheel 6 connected to column 8 by this transmission in a position predetermined.
  • the end of the lock in the second position of the lock 22, corresponding to that shown at the bottom right of the Figure 5, can roll on the plate 25 doubling the pulley leading 10A, while the first end of the lock, provided with a roller 27, is housed at least partially in the plate 23 integral in rotation with the column 8 for make the driving pulley 10A and the column 8 integral with displacement so that the front wheel 5A and / or 5B, subjected to the action of the driving pulley 10A, is made director.
  • the machine has two transmissions and therefore two driving pulleys, it has also two locks with identical parts bear identical reference numbers.
  • the passage one of the locks from a first position to a second position operates in synchronism with the passage of the other lock from second position to first position.
  • the change from first position to second position takes place under the action of the jack 21 by extension of the rod of the latter, while the return of the second position at the first position is effected by means return such as springs 26 cooperating with a member support 29 affecting the shape of a radial finger to the body tubular lock.
  • This solution has the advantage to integrate, in the same whole, both the means clutch of different transmissions and means immobilizing the wheels in a determined position.
  • the plate 23, integral in rotation with column 8, comprises housings 30 at the ends 27 of the latches offset at 90 ° to allow synchronous operation. he it should be noted that a damping element is also provided 31 between cylinder rod 21 and end 28 of latch 22 for make the action of the cylinder rod progressive.
  • the operating member 7 of the direction of the machine constituted here by a drawbar, is mounted offset relative to the median longitudinal axis of the machine.
  • deactivation of a transmission and / or respectively the activation of a other transmission controlled by the control unit 12 for selecting the operating mode of the machine are slaved to the positioning of the steering wheel (s) 5A, 6 before deactivation.
  • the machine 1 is in a mode of said lateral operation in which the rear wheel 6 is fixedly positioned with its axis of rotation parallel to the longitudinal axis of the side members and the wheel before 5A is directing thanks to the activation of the transmission 10 between front wheel 5A and steering column 8 while the front wheel 5B is mad.
  • Steering wheels 5A or 6 are brought in manually in a predetermined position before deactivation of the transmission 10, 11 which connects them to the transmission by through management itself, especially by handling the operating member 7 of the steering, know the drawbar.
  • the operator by means of the drawbar 7, for example brings the wheel 5A to the predetermined position corresponding to a frontal displacement of the machine, that is to say in a position in which the axis of rotation of the wheel 5A extends perpendicular to the longitudinal axis of the spar. This position is then detected by the position sensor or automatically locked under spring action. Disabling transmission 10 and the activation of the transmission 11 are then rendered possible.
  • the wheels of the machine are kept immobilized in a predetermined position by means of at least one mechanical stop.
  • This mechanical stop can be constituted by the axially movable latch as mentioned above.
  • the mechanical stop can be offset and positioned at neighborhood of the wheels.
  • This lifting device 3 consists of an apron 14 fork carriers 15 moving up and down along of a mast 16 of a carriage 17 mast holder sliding mounted on the side members 2.
  • the base of the carriage 17 is provided 18 rotary synchronous motors with direction of rotation reversible each cooperating with a chain 19 whose ends are fixedly mounted along a beam 2.
  • the chain is kept at least partially wrapped around of the rotary motor member 18 to allow, during the rotational drive of the rotary 18 members, the movement of the carriage 17 mast carrier 16 along the longitudinal members 2 along an axis parallel to the longitudinal axis side members 2.

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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)
  • Non-Deflectable Wheels, Steering Of Trailers, Or Other Steering (AREA)
  • Forklifts And Lifting Vehicles (AREA)
EP02291537A 2001-06-22 2002-06-20 Fördergerät für Lasten wie Hubstapler Withdrawn EP1270496A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0108253A FR2826353B1 (fr) 2001-06-22 2001-06-22 Engin de manipulation de charges tel que gerbeur
FR0108253 2001-06-22

Publications (1)

Publication Number Publication Date
EP1270496A1 true EP1270496A1 (de) 2003-01-02

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ID=8864651

Family Applications (1)

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EP02291537A Withdrawn EP1270496A1 (de) 2001-06-22 2002-06-20 Fördergerät für Lasten wie Hubstapler

Country Status (2)

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EP (1) EP1270496A1 (de)
FR (1) FR2826353B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2900382A1 (fr) * 2006-04-26 2007-11-02 Benotec Soc Par Actions Simpli Chariot de manutention a au moins trois roues directrices
EP1892173A3 (de) * 2006-08-23 2008-10-29 Jungheinrich Aktiengesellschaft Flurförderzeug mit einer elektrischen Lenkeinrichtung sowie Verfahren zur Steuerung eines Flurförderzeugs mit einer elektrischen Lenkeinrichtung

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2913063A (en) * 1954-09-20 1959-11-17 Raymond Corp Steering and driving mechanism for material handling trucks
FR1316730A (fr) * 1962-01-16 1963-02-01 Yale & Towne Mfg Co Système de direction pour chariot industriel
GB1029284A (en) * 1962-09-28 1966-05-11 Raymond Corp Improvements in or relating to industrial trucks
FR2319521A1 (fr) * 1975-07-31 1977-02-25 Zelli Sante Chariot a roues articulees et orientables avec compensation de l'angle de braquage des roues directrices destine, particulierement, a porter des appareils de prises de vues de television
US4257619A (en) * 1978-09-26 1981-03-24 Fisher James L Variable ratio rotary positioning mechanism and camera dolly steering mechanism embodying same
US4326830A (en) * 1979-05-15 1982-04-27 Cusack Lawrence B Side loading vehicle
US4411329A (en) * 1982-01-11 1983-10-25 Caterpillar Tractor Co. Vehicle with multi-directional movement capabilities
EP0712805A2 (de) * 1993-05-18 1996-05-22 Nippon Yusoki Co.,Ltd Schubgabelstapler

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2913063A (en) * 1954-09-20 1959-11-17 Raymond Corp Steering and driving mechanism for material handling trucks
FR1316730A (fr) * 1962-01-16 1963-02-01 Yale & Towne Mfg Co Système de direction pour chariot industriel
GB1029284A (en) * 1962-09-28 1966-05-11 Raymond Corp Improvements in or relating to industrial trucks
FR2319521A1 (fr) * 1975-07-31 1977-02-25 Zelli Sante Chariot a roues articulees et orientables avec compensation de l'angle de braquage des roues directrices destine, particulierement, a porter des appareils de prises de vues de television
US4257619A (en) * 1978-09-26 1981-03-24 Fisher James L Variable ratio rotary positioning mechanism and camera dolly steering mechanism embodying same
US4326830A (en) * 1979-05-15 1982-04-27 Cusack Lawrence B Side loading vehicle
US4411329A (en) * 1982-01-11 1983-10-25 Caterpillar Tractor Co. Vehicle with multi-directional movement capabilities
EP0712805A2 (de) * 1993-05-18 1996-05-22 Nippon Yusoki Co.,Ltd Schubgabelstapler

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2900382A1 (fr) * 2006-04-26 2007-11-02 Benotec Soc Par Actions Simpli Chariot de manutention a au moins trois roues directrices
EP1849744A3 (de) * 2006-04-26 2009-04-15 Beaupreau Techniques et Mecaniques Industrielles Förderwagen mit mindestens drei Leiträdern
US8381860B2 (en) 2006-04-26 2013-02-26 Manitou Bf Truck with at least three steered wheels
EP1892173A3 (de) * 2006-08-23 2008-10-29 Jungheinrich Aktiengesellschaft Flurförderzeug mit einer elektrischen Lenkeinrichtung sowie Verfahren zur Steuerung eines Flurförderzeugs mit einer elektrischen Lenkeinrichtung

Also Published As

Publication number Publication date
FR2826353A1 (fr) 2002-12-27
FR2826353B1 (fr) 2003-09-26

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