EP0591967A2 - Dispositif pour la manutention de charges - Google Patents

Dispositif pour la manutention de charges Download PDF

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Publication number
EP0591967A2
EP0591967A2 EP93116242A EP93116242A EP0591967A2 EP 0591967 A2 EP0591967 A2 EP 0591967A2 EP 93116242 A EP93116242 A EP 93116242A EP 93116242 A EP93116242 A EP 93116242A EP 0591967 A2 EP0591967 A2 EP 0591967A2
Authority
EP
European Patent Office
Prior art keywords
leg
bar
receiving
load
vertical
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.)
Granted
Application number
EP93116242A
Other languages
German (de)
English (en)
Other versions
EP0591967B1 (fr
EP0591967A3 (en
Inventor
Vesa Raevaara
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.)
Mercantile Oy AB
Original Assignee
Mercantile Oy AB
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
Application filed by Mercantile Oy AB filed Critical Mercantile Oy AB
Publication of EP0591967A2 publication Critical patent/EP0591967A2/fr
Publication of EP0591967A3 publication Critical patent/EP0591967A3/de
Application granted granted Critical
Publication of EP0591967B1 publication Critical patent/EP0591967B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B66F9/12—Platforms; Forks; Other load supporting or gripping members
    • B66F9/18—Load gripping or retaining means

Definitions

  • the invention relates to a device for handling loads, with a receiving device serving to receive the loads and an actuating device supporting and actuating the receiving device.
  • Devices for handling loads of the type in question have been known in practice in a wide variety of embodiments for years.
  • so-called storage and retrieval machines and transport vehicles are used in the field of warehouse technology and automatic material handling technology.
  • Such devices or vehicles have a wide variety of load grippers for handling loads, which are designed, for example, in the sense of telescopic forks. Telescopic forks carry the load from below and therefore require a considerable amount of space for placing the forks below the load - in all handling positions.
  • Telescopic forks are particularly well suited for the handling of so-called Euro pallets, because these wooden pallets have sufficient space for the forks below the load to be lifted or below the actual pallet surface due to their construction.
  • the conventional telescopic forks are not very suitable, since the space available below the machine pallet is extremely small.
  • additional crossbeams are required here in order to create sufficient space for retracting the telescopic forks. This in turn significantly reduces the capacity of the warehouse and thus leads to additional storage costs.
  • the manufacturing costs of the forks are relatively high because they always have several machined components.
  • the actuation of the forks usually takes place via chains that expand due to constant material fatigue and must therefore be readjusted regularly. In addition, the chains must be constantly lubricated, which again involves considerable costs.
  • devices for handling loads are known, after which the load is transferred to roller elements.
  • Such devices are usually driven by directly driven rollers or by means of a displacement chain.
  • a device of the type in question can only be used in systems that are designed in one level, for example in driverless transport vehicles.
  • a major disadvantage of the device in question can be seen in the fact that all storage spaces require roller elements.
  • the height positions between the roller elements and the storage spaces provided with roller elements must fit together exactly and deflections of the machine elements or the frame must not be too great. Due to the high elasticity of superstructures, such devices are not very suitable in storage systems with multiple levels.
  • the present invention is therefore based on the object of designing and developing a device for handling loads of the type in question so that space-saving handling of dirty and heavy loads is possible with a simple and at the same time inexpensive construction.
  • a device for handling loads is designed such that the receiving device has a support bar, shoulders or the like that at least partially encompasses the load or the load-bearing or fastened to the load, preferably horizontally arranged mounting bar, that the mounting bar together with rods and / or bars of the actuating device form a parallelogram, the legs of which are connected to one another via joints, that the leg opposite the receiving bar is articulated vertically displaceably on a guide formed on a preferably vertical bar and that there is an actuating member between the bar and one of the bars Receiving bar with the parallel leg connecting lateral leg of the parallelogram extends.
  • the receiving device has a receiving strip which either at least partially engages under the load to be carried itself or support parts, shoulders or the like attached to it.
  • the receiving bar forms a parallelogram together with rods and / or bars of the adjusting device, the legs of the parallelogram being connected to one another via joints. Since the leg opposite the receiving bar, ie the upper leg, is articulated vertically displaceably on a guide formed on a preferably vertical beam, the holds In every working position, the mounting bar has its original, ie horizontal, position.
  • the device according to the invention is designed such that the receiving bar and thus also the load to be handled can be moved in a horizontal plane, the load being able to be moved away from the vertical bar or towards the vertical bar.
  • an actuating element is provided which extends between the vertical bar and one of the side legs of the parallelogram connecting the receiving bar with the leg parallel to it.
  • the actuating member can be connected both to the side leg of the parallelogram closest to the bar and to the side leg facing away from the bar.
  • the receiving strip it is advantageous to design it essentially with an L-shaped cross section.
  • the lower, transverse leg of the L-profile serves to reach under the load, and this leg of the L-profile serving to reach under the load is advantageously made thinner than the leg of the L used for articulation on the lateral legs of the parallelogram Profiles. This ensures that the relatively thin, transverse leg of the L-profile can grip under almost any load, for example under a pallet according to DIN 55 201 or under its shoulders, without additional crossbeams serving to support being provided.
  • the actuating member it is advantageous if it is pivotally articulated at both ends and the side part is acted upon by pivoting in the sense of a lever.
  • the receiving bar is horizontally displaced and the leg opposite the receiving bar - due to its vertical displaceability - vertically.
  • the actuating member causes the receiving bar and thus the load to be handled to be displaceable in a horizontal plane is because the upper leg of the parallelogram - the leg opposite the receiving bar - can move towards the receiving bar with increasing distance of the load from the vertical bar. If, on the other hand, the load is moved towards the vertical bar, the distance between the mounting bar and the opposite leg is increased again.
  • the actuating member is pivotably articulated approximately centrally on the lateral leg and is approximately half as long as the lateral leg.
  • the displaceability of the upper leg, i.e. of the leg opposite the receiving bar on the vertical bar must then be dimensioned accordingly so that the actuating member can sufficiently deflect the receiving bar.
  • the joints via which the upper leg and the actuating member are articulated on the vertical bars lie in a vertical plane.
  • the joints by means of which the actuating element is articulated on the beam and the lateral legs are articulated on the receiving strips can lie in a horizontal plane. It is now essential that the joints in question can lie either on a vertical straight line or a horizontal straight line, so that both the legs and the joints are aligned with one another.
  • the joints or the legs connected via the joints could have a lateral offset. This would ensure that the respective legs can be moved past the actuating member, for example, and that the actuating member can pivot the parallelogram in both directions by swiveling on both sides of the vertical bar.
  • the device in question for handling loads could be used on both sides of the vertical bar, so that, for example, loads can be removed from a shelf and - in one plane - can be pivoted away in the other direction.
  • the pivoting movement or actuation of the actuating member takes place by means of a drive attached to the beam.
  • This drive is used exclusively for actuating or pivoting the actuating member, so that this drive - preferably an electric motor - can be dimensioned accordingly.
  • the drive or electric motor could be operatively connected to the actuating member via a stepping transmission, preferably via a Maltese cross or an eccentric.
  • a vertical guide of the leg opposite the receiving bar is provided on the vertical bar.
  • This guidance could be implemented by at least one slide shoe guided in a corresponding recess on the vertical bar.
  • the upper leg of the parallelogram has two sliding shoes guided in the recess on the vertical bar at two differently articulated points, these sliding shoes holding the leg in a horizontal position — regardless of the vertical position — against tipping.
  • the device according to the invention shifts loads in a horizontal plane.
  • the mounting strips can actually lift the loads in question from below and lift them off a shelf, for example, it is imperative that the mounting strips can also be changed in their vertical position.
  • the vertical bar can be adjusted in height in a particularly advantageous manner.
  • the bar is preferably laterally adjustable in a horizontal plane orthogonal to the original movability of the receiving bar.
  • This side adjustment - for example along a high rack - can take place, for example, via guide rails on which the vertical bar is preferably articulated on both sides.
  • a separate drive is also provided for this, so that the different adjustabilities of the device according to the invention are realized by mutually independent servomotors.
  • the vertical bar is assigned to a storage and retrieval unit or a transport vehicle, so that the above-mentioned movement sequences for loading and unloading a high rack or for other means of loading and unloading loads of a transport vehicle can be used advantageously.
  • FIG. 1, 3 and 4 show a schematic representation of a device for handling a load 1 shown in FIG. 2.
  • the device shown here has a receiving device 2 serving to receive the load and an actuating device 3 carrying and actuating the receiving device 2 .
  • the receiving device 2 has a horizontally arranged receiving ledge 5 which partially engages under the shoulders 4 carrying the load 1.
  • the receiving bar 5 forms, together with rods or bars of the adjusting device 3, a parallelogram 6, the legs of which are connected to one another via joints 7, 8, 9, 10.
  • the of the mounting bar 5 opposite leg 11 is articulated on a guide 13 formed on a vertical bar 12 so as to be vertically displaceable.
  • An actuating member 16 extends between the beam 12 and one of the lateral legs 14 or 15 connecting the receiving bar 5 with the leg 11 parallel to it.
  • FIG. 1 and 3 show particularly clearly that a total of two identically designed receiving and actuating devices 2, 3 arranged parallel to one another are provided, the receiving strips 5 of which partially engage under the load 1 on both sides - from the outside. Consequently, the load 1 to be handled is held securely on both sides. Furthermore, the movements of the two parallel recording and actuating devices 2, 3 are forcibly synchronized due to the actuation selected here, which is particularly evident from FIG. 3.
  • Fig. 4 clearly shows that the receiving bar 5 and the opposite, articulated on the vertical bar 12 and there vertically displaceable leg 11 are aligned horizontally in each working position of the device. This also ensures that the load to be handled is held securely.
  • FIGS. 1 and 3 and FIG. 5 show that the receiving strip 5 has an essentially L-shaped cross section.
  • the leg of the L-profile serving to reach under the load 1 is thinner than the leg 18 of the L-profile serving to link to the lateral legs 14, 15 of the parallelogram.
  • the leg 17 of the L-profile used to reach under the load 1 is dimensioned such that it fits under the shoulders 19 of a pallet 20 according to DIN 55 201.
  • the actuator 16 is designed as a rod.
  • the actuator 16 is pivoted at both ends and acts on the side part or the lateral leg 14 in the sense of a lever by pivoting.
  • the receiving bar 5 is shifted horizontally and the leg 11 opposite the receiving bar 5 vertically.
  • the actuating member 16 is pivotably pivoted approximately centrally to the side leg 14 and is approximately half as long as the side leg 14.
  • 1, 3 and 4 further indicate that the joints 10, 21, via which the upper leg 11 and the actuating member 16 are articulated to the vertical bar 12, lie in a vertical plane. So that the actuator 16 can deflect the parallelogram 6 in the sense of a swing to the other side of the beam 12, there is a lateral offset between the actuator 16 and the side legs 14, 15 and the corresponding joints 21 and 7 or 8, which in the figures, however, cannot be seen.
  • actuating member 16 can be actuated by means of a drive attached to the bar 12. Also, no gears or the like are shown in the illustrations. Details of this can be found in the general part of the description.
  • Fig. 4 further indicates that the vertical guide 13 of the leg 11 opposite the receiving bar 5 is realized by two slide shoes 23 guided in a recess 22 vertical bars 12, the slide shoes 23 holding the leg 11 in a tilt-proof position in its horizontal position.
  • FIG. 5 finally shows the use of the device according to the invention in the context of a storage and retrieval unit.
  • the receiving strips 5 engage under the pallet 20 or under the shoulders 19, so that the load 1 can be handled without hindrance.
  • FIG. 5 shows in the upper illustration the usual handling of a load 1 by means of telescopic forks 24, the use of which always requires placing the pallet 20 on additional support beams 25 so that the telescopic forks 24 can be brought under the shoulders 19 of the pallet 20.

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Warehouses Or Storage Devices (AREA)
EP93116242A 1992-10-07 1993-10-07 Dispositif pour la manutention de charges Expired - Lifetime EP0591967B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4233709 1992-10-07
DE4233709A DE4233709C2 (de) 1992-10-07 1992-10-07 Vorrichtung zur Handhabung von Lasten

Publications (3)

Publication Number Publication Date
EP0591967A2 true EP0591967A2 (fr) 1994-04-13
EP0591967A3 EP0591967A3 (en) 1994-05-18
EP0591967B1 EP0591967B1 (fr) 1997-02-05

Family

ID=6469847

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93116242A Expired - Lifetime EP0591967B1 (fr) 1992-10-07 1993-10-07 Dispositif pour la manutention de charges

Country Status (2)

Country Link
EP (1) EP0591967B1 (fr)
DE (2) DE4233709C2 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2826323A (en) * 1954-09-21 1958-03-11 Otis Elevator Co Crate handling attachment for industrial trucks
US3086661A (en) * 1961-10-26 1963-04-23 Pacific Coast Eng Co Cargo container carrier and lifting spreader therefor
GB1036664A (en) * 1964-06-09 1966-07-20 Robert Francis Edmunds Improvements in apparatus for handling hollow articles

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4096953A (en) * 1977-03-21 1978-06-27 Cincinnati Milacron Inc. Mechanism to transfer workpieces between locations
DE3913664C2 (de) * 1989-04-26 1998-06-18 Schuler Pressen Gmbh & Co Kurvenantrieb zum Bewegen eines Transportorgans in horizontalen und vertikalen Bewegungsrichtungen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2826323A (en) * 1954-09-21 1958-03-11 Otis Elevator Co Crate handling attachment for industrial trucks
US3086661A (en) * 1961-10-26 1963-04-23 Pacific Coast Eng Co Cargo container carrier and lifting spreader therefor
GB1036664A (en) * 1964-06-09 1966-07-20 Robert Francis Edmunds Improvements in apparatus for handling hollow articles

Also Published As

Publication number Publication date
DE4233709A1 (de) 1994-04-14
EP0591967B1 (fr) 1997-02-05
EP0591967A3 (en) 1994-05-18
DE59305385D1 (de) 1997-03-20
DE4233709C2 (de) 1996-03-21

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