EP0892758B1 - Vorrichtung zum ziehen und drucken von einer last in eine gewisse ebene - Google Patents

Vorrichtung zum ziehen und drucken von einer last in eine gewisse ebene Download PDF

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Publication number
EP0892758B1
EP0892758B1 EP97918205A EP97918205A EP0892758B1 EP 0892758 B1 EP0892758 B1 EP 0892758B1 EP 97918205 A EP97918205 A EP 97918205A EP 97918205 A EP97918205 A EP 97918205A EP 0892758 B1 EP0892758 B1 EP 0892758B1
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EP
European Patent Office
Prior art keywords
load
arm
hinge
transfer
support
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.)
Expired - Lifetime
Application number
EP97918205A
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English (en)
French (fr)
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EP0892758A1 (de
Inventor
Pierre Marcelli
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Individual
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Individual
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Publication of EP0892758A1 publication Critical patent/EP0892758A1/de
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Publication of EP0892758B1 publication Critical patent/EP0892758B1/de
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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
    • B66F9/12—Platforms; Forks; Other load supporting or gripping members
    • B66F9/19—Additional means for facilitating unloading
    • B66F9/195—Additional means for facilitating unloading for pushing the load
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/18—Mechanical movements
    • Y10T74/18568—Reciprocating or oscillating to or from alternating rotary
    • Y10T74/18832—Reciprocating or oscillating to or from alternating rotary including flexible drive connector [e.g., belt, chain, strand, etc.]
    • Y10T74/1884—Reciprocating or oscillating to or from alternating rotary including flexible drive connector [e.g., belt, chain, strand, etc.] with sprocket wheel
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/18—Mechanical movements
    • Y10T74/18992—Reciprocating to reciprocating

Definitions

  • the present invention relates to a device for transferring a load by pushing and traction in the same plane, called transfer plane, this device being used in particular for transferring a tool, a mold or a metallic mass, from a support mobile on a fixed support, said device being arranged to be mounted either on the mobile support, either on the fixed support, this device comprising at least one articulated handling and arranged to move in the same plane, called plane of articulation, this plane of articulation being substantially perpendicular to the plane of load transfer, this arm comprising at least one front element and one element rear, the rear element being coupled to said support by at least a first articulation, the front element being coupled on the one hand to the rear element by at least a second articulation and on the other hand to said load by hooking means provided at its free end, the two joints being arranged in said plane of articulation of the handling arm, this device also comprising means drive arranged to move said arm between two extreme positions, one first folded position in which the arm is retracted between the load and the support
  • the remoteness of the load results in the distance of its center of gravity from the center of gravity of the truck, the implications of this distance being as follows: the need to oversize the length of the platform or the forks of the trolley, reducing the maneuverability carriage and the decrease in the grip of the drive wheel. It is important to clarify that the capabilities of a material handling device, such as a forklift, are given by the value of the maximum transportable load and the distance from the center gravity of the load transported relative to the axis of the mast.
  • the mounting of transfer devices mentioned above therefore has the disadvantage of penalizing significantly the nominal capacities of the handling equipment, penalty that one could put a figure between 25 and 35%.
  • the present invention proposes to overcome these drawbacks by providing a device transfer of small footprint, low weight, and whose architecture allows to be easily integrated into the rear of the sliding apron, i.e. in the thickness of the mast of a forklift. Therefore, the capabilities of the material handling device are not affected in any way.
  • This transfer device also has a simple design and structure. It also represents a low investment and can be installed on any handling device or directly on a machine tool. Furthermore, the trajectory of this transfer device during transfer is stable and requires no external guidance or additional support.
  • the front and rear elements have a substantially length equal.
  • the means of training include at least one double-acting cylinder and the transmission means comprise at least one chain coupled simultaneously to the two joints by means of a first and second gear wheels.
  • the cylinder liner may be integral with the rear element and, in this case, the rod of the cylinder is integral with the chain, or, the rod of the cylinder can be integral with the element rear and, in this case, the cylinder liner is secured to the chain.
  • the shirt of the cylinder can also be secured to the support and, in this case, the cylinder rod is secured to the chain, or vice versa.
  • the first toothed wheel coupled to the first articulation is integral of said support and the second toothed wheel coupled to the second articulation is integral of the front element.
  • first toothed wheel has a number of teeth double that of the second toothed wheel, so as to angularly move said front elements and rear in a constant ratio substantially equal to 2.
  • the transmission means can comprise two chains arranged on the side and of the handling arm and, in this case, each joint is coupled to a pair of toothed wheels arranged on either side of said articulation.
  • the attachment means advantageously comprise at least two pins coaxial provided at the end of the front element of the handling arm and at least two hooking lugs fixed to said load and arranged to receive said loads pins.
  • the transfer device can advantageously be mounted in the mast at the rear of the sliding apron.
  • the transfer device may comprise at least two arms of handling, each associated with their own drive means, these arms being provided on either side of the mast and the means for hooking the load being common and connected to said handling arms.
  • the transfer device 1 is mounted on a mobile support, such as a forklift 50.
  • the forklift 50 comprises a rolling chassis 51, a substantially vertical mast 52 integral with the chassis 51, an apron 53 sliding along the mast 52, a plate horizontal or horizontal forks 54 integral with the deck 53 and a unit of motorization 55 of said chassis 51 and of said deck 53.
  • the transfer device 1 provided on this carriage is arranged to transfer, in the same plane, called subsequently plane transfer, a load 60 carried by the plate or the forks 54 of the carriage elevator 50 on a fixed support, such as a machine tool or a press 70, and Conversely.
  • the transfer plan is defined by a table 71 of the machine tool 70 in extension of which are positioned the plate or the forks 54 of the carriage elevator 50.
  • the end of the plate or forks 54 is provided with a rim arranged to lean on the table 71 of the machine tool 70.
  • the transfer device 1 comprises a handling arm 2 articulated in the same plane, hereinafter called the plane articulation, this arm being split into a rear element 3 and a front element 4.
  • the rear element 3 is coupled to the forklift 50, and in particular to the deck sliding 53, by a first articulation 5 provided on a support 5 'integral with said apron.
  • the front element 4 is coupled to the rear element 3 by a second articulation 6.
  • the free end 7 of the front element 4 is coupled to said load 60 by automatic or manual attachment means 8 constituting a third articulation 40 which moves in a plane parallel to the transfer plane.
  • the three articulations 5, 6 and 40 are arranged in said articulation plane of the arm of handling.
  • This third articulation 40 consists of two pins 41 coaxial provided on either side of the T-shaped end 7 of the front element 4. These pins 41 can be fixed or retractable in said end 7.
  • the load 60 is provided with hooking pieces 61 in form of angle iron open upwards and downwards and fixed to said load 60 by screws or other suitable fastening means.
  • the dropout or hanging up of the arm 2 at load 60 is obtained simply when lowering or lifting the deck 53 of the forklift 50. This movement from top to bottom and vice versa allows either the entry or the exit of the pins 41 in the hanging angles 61.
  • the attachment parts 61 provided on the load 60 may for example include inclined access ramps arranged to automatically retract the pins in the end 7 during attachment and / or unhooking, and housings interiors for receiving said pins in the extended position allowing locking hanging the load 60.
  • the handling arm 2 is arranged to move between two extreme positions, a first folded position in which it stores and merges into the structure of the mast 52 and the sliding apron 53 of said forklift 50 and a second unfolded position in which it is extended between said mast 52 and the load 60 transferred or to be transferred.
  • This handling arm 2 is specially designed so that its free end 7 can move, in a vacuum, without guide device, without fulcrum, following a substantially trajectory rectilinear in a plane substantially parallel to the transfer plane of the load, from one extreme position to another and vice versa.
  • the plan of articulation of the handling arm is substantially perpendicular to the plane of charge transfer.
  • FIG. 3 The extreme positions of the handling arm 2 are shown in Figure 3 in strong line for said first position, thin line for said second position and in short dashed lines for an intermediate position.
  • This handling arm 2 is associated with drive means 10 comprising a double-acting cylinder 11 hydraulic, pneumatic or electric.
  • This cylinder 11 can be provided on the element rear 3, as illustrated in FIGS. 3 and 4A, but can also be provided directly on the structure of the forklift 50 or on another fixed support point dissociated from said handling arm 2.
  • the jacket 11a of the jack 11 is integral with the rear element 3 and the rod 11b of this jack 11 is made integral with two parallel transmission chains 12, by means of a coupling bar 13.
  • FIG. 4A the jacket 11a of the jack 11 is integral with the rear element 3 and the rod 11b of this jack 11 is made integral with two parallel transmission chains 12, by means of a coupling bar 13.
  • the rod 11b of the jack 11 is integral with the rear element 3 and the jacket 11a of the jack 11 is made integral with the transmission chains 12 by the coupling bar 13.
  • Each chain 12 is designed to mesh simultaneously in a first toothed wheel 14 provided on the first articulation 5 and in a second gear 15 provided on the second articulation 6.
  • the first wheels teeth 14 are rigidly fixed to the mast 52 of the forklift 50 while the second toothed wheels 15 are rigidly fixed on the front element 4 of said arm handling.
  • Said first toothed wheels 14 have a number of teeth double that of said second toothed wheels 15.
  • This particular arrangement of the drive means 10 ensures the angular and synchronous displacement of the front 4 and rear 3 elements of the handling 2 by means of a single cylinder.
  • the chains of transmission 12 are driven simultaneously by the coupling bar 13 according to a rectilinear displacement.
  • the first toothed wheels 14 being fixed, the displacement straight lines 12 in collaboration with the fixed support point of the jack 11 generates a relative displacement of an angle ⁇ of said rear element 3, the axis of the second articulation 6 describing an arc of a circle whose center corresponds to the axis of the first joint 5.
  • the rectilinear movement of the chains 12 in collaboration with the fixed support point of the cylinder 11 generates a relative displacement by an angle ⁇ of said front element 4, in the opposite direction to the rear element 3, the free end 7 moving along a straight line parallel to said plane of transfer of charge.
  • the first and second toothed wheels 14, 15 having a constant ratio of 2, the front 4 and rear 3 elements of said handling arm move in the same report. Consequently, the angle ⁇ corresponding to the opening between the two front 4 and rear 3 elements is equal to 2 times the angle ⁇ corresponding to the travel of the rear element 3 with respect to a substantially vertical axis passing through the first articulation 5. It is thanks to this constant ratio of 2 that the trajectory of the free end 7 of the handling arm 1 is substantially straight.
  • the front 4 and rear 3 elements of the handling arm 2 are of substantially equal length. It is obvious that this characteristic did not mandatory as well as the constant ratio of 2 between the toothed wheels 14, 15.
  • the front 4 and rear 3 elements can have lengths different without calling into question the functioning of the handling 2.
  • the handling arm 2 as illustrated in Figures 1 to 4 corresponds to an optimal realization.
  • the pushing force it exerts on its free end 7 on load 60 is directly proportional to the ratio of torque exerted on the joints 5, 6 on the height of the arm. The more the arm unfolds, the more the height of the arm decreases, the more the pushing force increases. At startup, this force is minimal since the height of the arm is maximum.
  • the chains may have one or more rows.
  • the platform or the forks 54 of the forklift 50 are generally provided with rows of balls or bearings arranged in the direction of transfer. During the transport of the load 60, these balls or bearings (not shown) are retractable in the thickness of the plate or forks 54.
  • the attachment operation or detachment of the arm 2 with respect to the load 60 is carried out simultaneously with taking or depositing said load. The simultaneous combination of these functions is only possible thanks to the high vertical rigidity of the handling arm 2 obtained by the presence of the two transmission chains 12.
  • FIGS. 5A to 5C illustrate different possibilities of implementation of said transfer device 1 according to the invention.
  • the handling arm 2 is included in the structure of the lift truck 50, in particular behind the apron 53 and between the profiles of the mast 52, as in FIGS. 1 and 2. In this case, only the free end 7 provided with the hooking means 8 protrudes from the deck 53.
  • the transfer device 1 is doubled by two handling arms 2 provided on either side of the mast 52 at the rear of the deck 53. This construction can be considered for very large loads. In this case, the free ends 7 are coupled to common hooking means 8 to ensure movement regular charge.
  • the two handling arms 2 are associated with their own drive means whose control can be common to ensure a synchronous movement.
  • the handling arm 2 is mounted on a existing forklift 50, in front of the deck 53. Even in this configuration, the transfer device according to the invention is less bulky than known devices such as direct push cylinders, scissors or rigid chains.
  • the transfer device according to the invention achieves all set goals. Its installation being relatively simple, it is possible consider that it is directly mounted on a machine tool or press or on any other machine requiring a load transfer. In addition and as shown in the Figure 5B, its size being relatively small, it is conceivable to provide several transfer devices 1 in parallel and to couple them by means common attachment in the case of extremely heavy loads.
  • Ways 10 of the handling arm could include an electric motor or other equivalent means.
  • the chains 12 and the toothed wheels 14, 15 could be replaced by toothed belts or not and pulleys corresponding, or by a series of gear pinions, or other means equivalent.

Claims (7)

  1. Vorrichtung (1) zum ziehen und drücken einer Last (60) in einer als Transportebene bezeichnete gewissen Ebene, wobei diese Vorrichtung insbesondere verwendet wird um ein Werkzeug, eine Gießform oder eine metallische Masse von einer beweglichen Unterlage (50) auf eine feste Unterlage (70) und umgekehrt zu bringen, wobei die besagte Vorrichtung ausgelegt ist um entweder auf der besagten beweglichen Unterlage oder auf der besagten festen Unterlage montiert zu werden, wobei diese Vorrichtung mindestens einen Handhabungs-Gelenkarm (2) beträgt, welcher angeordnet ist um sich in einer gewissen, als Gelenkebene bezeichnete Ebene zu bewegen, wobei diese Gelenkebene merklich rechtwinklig zur Transportebene der Last (60) liegt, wobei dieser Arm mindestens ein Vorderteil (4) und ein Hinterteil (3) beträgt, wobei das Vorderteil (4) und das Hinterteil (3) eine merklich gleiche Länge aufweisen, wobei das Hinterteil (3) mittels mindestens eines ersten Gelenks (5) an der besagten Unterlage (50, 70) angekoppelt ist, wobei das Vorderteil (4) einerseits mittels mindestens eines zweiten Gelenks (6) an dem Hinterteil (3) und andererseits mittels an seinem freien Ende (7) vorgesehener Einhängemittel (8), welche ein drittes Gelenk (40) bilden, an der besagten Last (60) angekoppelt ist, wobei die drei Gelenke (5, 6, 40) in der besagten Gelenkebene des Handhabungsarms (2) angeordnet sind, wobei diese Vorrichtung ebenfalls Antriebsmittel (10) besitzt, welche angeordnet sind um den besagten Arm (2) zwischen zwei Endlagen zu bewegen, eine erste zusammengeklappte Endlage in welcher der Arm zwischen der Last und der Unterlage eingezogen ist, und eine zweite aufgeklappte Endlage in welcher der Arm zwischen der Last und der Unterlage ausgestreckt ist, und umgekehrt, dadurch gekennzeichnet, daß die Antriebsmitel (10) mindestens einen beidseitig wirkenden Zylinder (11), der mit dem besagten Hinterteil (3) zusammenwirkt, und Übertragungsmittel (12, 14, 15) aufweisen, wobei diese Übertragungsmittel mindestens eine mittels eines ersten (14) und eines zweiten Zahnrades (15) gleichzeitig an beide Gelenke (5 bzw. 6) angekoppelte Kette (12) beträgt, wobei das erste Zahnrad (14) fest mit der besagten Unterlage (50, 70) verbunden ist und das zweite Zahnrad (15) fest mit dem Vorderteil (4) verbunden ist, wobei das erste Zahnrad (14) die doppelte Anzahl Zähne als die des zweiten Zahnrads (15) aufweist, um die besagten Vorder- (4) und Hinterteile (3) winklig in einem konstanten Verhältnis von merklich 2 zu bewegen.
  2. Vorrichtung gemäß Anforderung 1, dadurch gekennzeichnet, daß der Körper (11a) des Zylinders (11) fest mit dem besagten Hinterteil (3) verbunden ist, und daß die Stange (11b) des Zylinders (11) fest mit der besagten Kette (12) verbunden ist.
  3. Vorrichtung gemäß Anforderung 1, dadurch gekennzeichnet, daß die Stange (11b) des Zylinders (11) fest mit dem besagten Hinterteil (3) verbunden ist, und daß der Körper (11a) des Zylinders (11) fest mit der besagten Kette (12) verbunden ist.
  4. Vorrichtung gemäß Anforderung 1, dadurch gekennzeichnet, daß die Übertragungsmittel zwei beidseitig des Handhabungsarms (2) angeordnete Ketten (12) beträgt, und daß jedes Gelenk (5, 6) mit einem beidseitig des besagten Gelenkes angeordneten Paar Zahnräder (14, 15) verbunden ist.
  5. Vorrichtung gemäß Anforderung 1, dadurch gekennzeichnet, daß die Einhängemittel (8) mindestens zwei am Ende (7) des Vorderteils (4) des Handhabungsarms (2) vorgesehene koaxiale Zapfen (41) und mindestens zwei an der Last (60) befestigte Einhängeteile (61) betragen, welche angeordnet sind um die besagten Zapfen (41) aufzunehmen.
  6. Vorrichtung gemäß Anforderung 1, dadurch gekennzeichnet, daß, wenn die bewegliche Unterlage aus einen Hubwagen (50) besteht, der mit einem Mast (52), einer entlang dieses Mastes verfahrenden Hinterwand (53) und einer an der besagten Hinterwand befestigten Tragplatte oder Gabel (54) versehen ist, die Vorrichtung zum ziehen oder drücken (1) in dem Mast (52) hinter der verfahrenden Hinterwand (53) montiert ist.
  7. Vorrichtung gemäß Anforderung 6, dadurch gekennzeichnet, daß sie mindestens zwei Handhabungsarme (2) beträgt, die jeweils mit ihren eigenen Antriebsmittel (10) zusammenwirken, wobei diese Arme auf beiden Seiten des Mastes (52) vorgesehen sind und die Einhängemittel (8) der Last (60) gemeinsam und mit den besagten Handhabungsarmen verbunden sind.
EP97918205A 1996-04-12 1997-04-11 Vorrichtung zum ziehen und drucken von einer last in eine gewisse ebene Expired - Lifetime EP0892758B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9604770A FR2747381B1 (fr) 1996-04-12 1996-04-12 Dispositif de transfert d'une charge par poussee et traction dans un meme plan
FR9604770 1996-04-12
PCT/FR1997/000645 WO1997038934A1 (fr) 1996-04-12 1997-04-11 Dispositif de transfert d'une charge par poussee et traction dans un meme plan

Publications (2)

Publication Number Publication Date
EP0892758A1 EP0892758A1 (de) 1999-01-27
EP0892758B1 true EP0892758B1 (de) 2000-07-12

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP97918205A Expired - Lifetime EP0892758B1 (de) 1996-04-12 1997-04-11 Vorrichtung zum ziehen und drucken von einer last in eine gewisse ebene

Country Status (6)

Country Link
US (1) US6129502A (de)
EP (1) EP0892758B1 (de)
CA (1) CA2251018C (de)
DE (1) DE69702512T2 (de)
FR (1) FR2747381B1 (de)
WO (1) WO1997038934A1 (de)

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US7588404B2 (en) * 2005-03-24 2009-09-15 The Kroger Co. Container handling apparatus and container
US7909562B2 (en) * 2006-08-08 2011-03-22 C&S Wholesale Grocers, Inc. Material handling apparatus
US20090274539A1 (en) * 2008-05-05 2009-11-05 Jared Elliott Bockoff Load sweep
CN101987715B (zh) * 2009-08-03 2013-08-14 苏州澳昆智能机器人技术有限公司 用于托盘装卸的装置
FR2972003B1 (fr) 2011-02-25 2013-03-22 Rotobloc Psp Dispositif de transfert d'une charge par poussee et traction et engin de manutention equipe d'un tel dispositif
FR3029515B1 (fr) * 2014-12-05 2019-05-03 Dimeco Dispositif de transfert d'une charge par poussee et traction dans un meme plan et engin de manutention equipe d'un tel dispositif
CN113120821B (zh) * 2021-03-04 2022-09-13 山东厚德建筑安装工程有限公司 一种电力工程用施工综合设备
CN114955927B (zh) * 2022-05-18 2023-12-12 广东电网能源发展有限公司 电力设备转移组件以及电力设备转移方法

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Also Published As

Publication number Publication date
CA2251018A1 (fr) 1997-10-23
CA2251018C (fr) 2004-02-03
DE69702512D1 (de) 2000-08-17
FR2747381A1 (fr) 1997-10-17
US6129502A (en) 2000-10-10
WO1997038934A1 (fr) 1997-10-23
FR2747381B1 (fr) 1998-06-19
EP0892758A1 (de) 1999-01-27
DE69702512T2 (de) 2001-04-19

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