WO1990006280A1 - Dispositif de reglage d'une fourche porteuse de charges dans une position de support inclinee vers le haut - Google Patents

Dispositif de reglage d'une fourche porteuse de charges dans une position de support inclinee vers le haut Download PDF

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Publication number
WO1990006280A1
WO1990006280A1 PCT/EP1989/001450 EP8901450W WO9006280A1 WO 1990006280 A1 WO1990006280 A1 WO 1990006280A1 EP 8901450 W EP8901450 W EP 8901450W WO 9006280 A1 WO9006280 A1 WO 9006280A1
Authority
WO
WIPO (PCT)
Prior art keywords
frame
lifting frame
pulling
lifting
pulley
Prior art date
Application number
PCT/EP1989/001450
Other languages
German (de)
English (en)
Inventor
Herbert Bartram
Original Assignee
Dickertmann Ag
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 Dickertmann Ag filed Critical Dickertmann Ag
Publication of WO1990006280A1 publication Critical patent/WO1990006280A1/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
    • B66F9/12—Platforms; Forks; Other load supporting or gripping members
    • B66F9/16—Platforms; Forks; Other load supporting or gripping members inclinable relative to mast
    • 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
    • B66F9/07—Floor-to-roof stacking devices, e.g. "stacker cranes", "retrievers"

Definitions

  • the invention relates to a device for adjusting (tipping) load-bearing fork tines into an obliquely upward carrying position on or for a lifting and transport system, for example a gantry crane.
  • the load-bearing fork tines of a lifting and transport system extend in a known manner for the load pick-up and the load transport in a horizontal plane and this often causes the tines to tip or tilt downwards, which is disadvantageous for the load pick-up and the load transport affects, since then a safe load suspension is not possible.
  • the object of the invention is therefore to provide a fork tipping device with which the fork tines are automatically brought into an obliquely upward carrying position after the load has been passed horizontally during the subsequent load pick-up, through which a safe load pick-up and a perfect load transport is achieved .
  • this tipping device should be simple in construction, cost-saving to manufacture and functionally reliable, and be designed for use in various lifting and transport systems.
  • the fork tipping device makes it possible, in a simple and safe manner, after the load on the fork tines has passed horizontally, when the load is subsequently taken up, to automatically tip the fork tines up into a slightly inclined sloping position, so that the load is then safely and securely lifted can be transported.
  • This setting of the fork tines into the inclined carrying position takes place immediately when the fork tines are loaded and only then does the lifting movement of the fork tines occur with the load taken up.
  • the forks are automatically moved back into the horizontal position due to a spring preload.
  • the tilting device enables roughly a fork tine inclination setting of 5 to 10 °.
  • the tilting device is of simple construction, can be produced cost-effectively and is sturdy and can be integrated into the various lifting and transport systems and is designed in particular for a " overhead crane " .
  • the tilting device according to the invention automatically swivels the fork tines into the inclined carrying position and horizontal starting position without separate energy from the lifting and transport system down to the fork tines, such as electrical lines and electric drives, separate, separately operated devices or the like ., are necessary, but the lifting process converts this lifting movement into the swiveling movement.
  • an embodiment of the invention is shown, which is explained in more detail below. It shows:
  • FIG. 1 is a schematic representation of a gantry crane with a fork tipping device
  • FIG. 2 is a plan view of two fork tines that are adjustably spaced apart on a crossbar
  • FIG. 5 shows a longitudinal section through the fork tipping device in the obliquely upward tilted carrying position of the fork tines
  • FIG. 6 is a plan view in partial section of the crossbar of the fork tines pivotably mounted on a lifting frame
  • FIG. 7 shows a longitudinal section through the fork tipping device in a further embodiment in the horizontal starting position with a wedge-shaped fork pivot point
  • 8 shows a longitudinal section through the fork tipping device in a further embodiment in the horizontal starting position with pressure medium cylinders for pivoting the fork
  • FIG. 9 is a rear view of the fork tipping device according to FIG. 8.
  • the device for adjusting (tipping) load-bearing fork tines (1) into an obliquely upward carrying position on or for a lifting and transport system (2), such as overhead crane or the like, has a lifting frame (3) the two or more fork tines (1) about a horizontal axis (4) in dependence on a power-operated pulling and pivoting device (5) which takes effect before the lifting frame lifting movement takes effect in the inclined carrying position.
  • a motorized cable winch (6) is provided, which is mounted on the crane (2) and its cable (7) to create a pulling force - Attack point (8) of the pulling and pivoting device (5) is guided.
  • the pulling and pivoting device (5) is arranged in the lifting frame (3) and, as mentioned above, has the pulling force application point (8) and a fork tine pivoting point (9), the pulling force application point (8) from one at the upper end the pull and swivel device (5) rotatably mounted pulley (8) and the fork tine pivot point (9), according to the embodiment according to FIGS. 1 to 6, formed by an eccentric (9) rotatably mounted at the lower end in the lifting frame (3) is.
  • the pulling and swiveling device (5) is held under spring tension and holds the unloaded fork tines (1) in a horizontal starting position and can be moved against the spring tension relative to the lifting frame (3) to a limited stroke for pivoting the fork tines, whereby the rope pulley ( 8) and the eccentric (9) are rigidly connected to one another in the stroke direction.
  • the fork tines (1) are mounted on a crossmember (10) and are preferably kept adjustable in width spacing from one another. It is preferred to use the truss
  • the crossbeam (10) two fork tines (1) to be arranged.
  • the crossbeam (10) is mounted so that it can be pivoted in height about a horizontal axis (4), which is arranged at a distance above the eccentric (9), from the horizontal starting position of the fork tines (1) into the oblique carrying position.
  • the pulling and swiveling device (5) has a pulling frame
  • the two eccentrics (9) sit on a common axle (14) mounted in the lifting frame (3) and the two drawbars (13) each have an articulated attack on an eccentric lever (15) with their lower end of the length and "cause the drawbar height to shift the rotation of the eccentrics (9) about their axis (14).
  • the pull frame (11) is with the axis of rotation (8a) of its pulley (8) in a vertical groove (17) "of an intermediate frame (18) against the spring force for the eccentric rotation relative to the intermediate frame (18) and the pull frame ( movable 11) and between the intermediate frame (18) and towing frame (11) a plurality of compression springs (19) are arranged below the cable pulley (8).
  • the pull frame (11) consists of an upright central strut (11a), two oblique struts (11b) sloping downwards and outwards and a lower, horizontally extending cross strut (11c), the cross strut (11c) with the three struts (11a, 11b) is connected in the pivot axes (20) and axes of the cross strut. (11c) below the swiveling (20) for the 'inclined struts (11b) of the pivot bearing (12) for the go off both tie rods (13).
  • the rope pulley (8) is rotatably mounted at the upper end of the upright central strut (11a).
  • the intermediate frame (18) is defined between the lifting frame (3) and the towing frame (11) engages with its upper portion in this intermediate frame (18), said 'd intermediate frame (18)' in de ie upright groove (1 * 7) for the limited vertical movement of the pulley (8) with a pull frame (11) is provided.
  • the intermediate frame (18) is formed from metal sheets and the struts (11a to 11c) of the pull frame (11) are formed from double struts or hollow profiles.
  • the lifting frame (3) is also formed by hollow profiles.
  • the lifting frame (3) has bearings (22) with which it can be moved vertically on a vertical guide (23), preferably a column, of the crane (2), namely its trolley (2a), and around this guide (23) is rotated by at least 180 °.
  • the fork tines (1) are in a horizontal position and the compression springs (19) have pressed the cable pulley (8) down against the groove base (17a) of the groove (17), the eccentric (9) has been turned into the initial position that does not pivot the forks.
  • Grooves (17) of the intermediate frame (18) travels and the eccentric (9) is rotated, acts on the crossbar (10) and swivels it vertically about its pivot axis (4), so that the fork tines (1) move upwards directed oblique carrying position (see. Fig. 5).
  • the preload of the compression springs (19) is greater than the normal tensile force of the rope (7) for holding the lifting frame (3) with the pulling and pivoting device (5) and fork tines (1) in the unloaded position and only when the rope is pulling more strongly (7) the bias of the spring (19) is overcome.
  • the goods to be lifted and transported can be of a wide variety of types, preferably the goods are stored on pallets that the fork tines (1) can pass underneath without any problems.
  • FIG. 7 to 9 show two further versions of the device, which correspond in principle and in function to the device version according to FIGS. 1 to 6 and only show other fork pivoting designs, namely FIG. 7 wedge pivoting and FIG 8 and 9 hydraulic cylinder swivel 7,
  • the pulling and swiveling device (5) is equipped with at least one wedge (24) which is vertically displaceably guided in the lifting frame (3) and is fastened to the pull rod (13) and for swiveling the fork tines about the axis (4) one on the fork tines (1), preferably their contact pieces (16), fixed run-up fingers (25), such as slider, pin, roller or the like.
  • the wedge (24) is suspended from the lower end of the pull rod (13) and its wedge surface (24a), which interacts with the overrun finger (25), runs obliquely upwards and away from the fork tines (1).
  • the tensile and pivot means (5) at least together one of the-draft frame lifting movement and ittelzylinder moved apart pressure '(27) as a control cylinder on which, via a pressure medium line (28) having a plurality pivotably mounted in the lifting frame (3) and with the fork tines (1), preferably its contact pieces (16) 1 2
  • articulated pressure medium cylinders (29) is connected as a pivot cylinder for pivoting the fork tines (1) about the axis (4).
  • the control cylinder (27) is mounted between the fixed intermediate frame (18) and the cross strut (11c), which can be moved as a function of the rope pulley (8).
  • the pressure medium cylinders (29), which act transversely to the control cylinder (27), are pivotably mounted in the lifting frame (3) by means of joint pieces (30, 31) and are connected to the fork tines (1).
  • control cylinder (27) When the pull frame (11) is raised by the rope pulley (8), the control cylinder (27) is moved between the fixed intermediate frame (18) and the cross strut (11c) moving upwards and the pressure medium (hydraulic oil) from the control cylinder (27) pressed out over the pressure medium lines (28) into the swivel cylinders (29), which thereby extend and pivot the fork tines (1) about the axis (4) into the inclined carrying position.
  • pressure medium hydroaulic oil
  • control cylinder (27) can move apart again and the pressure medium flows out of the swivel cylinders (29) back to the control cylinder (27).
  • the fork tines (1) are automatically pivoted.

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)

Abstract

Dans un dispositif de réglage de fourches (1) porteuses de charge dans une position de support inclinée vers le haut, dans une installation (2) de levage et de transport, les fourches (1) sont montées dans la position inclinée de support sur un cadre de levage (3), de manière pivotante autour d'un axe horizontal (4), commandées par un agencement de traction et de pivotement (5) actionné par une source extérieure d'énergie lorsque les fourches reçoivent la charge mais avant que le cadre de levage n'effectue le levage. Les fourches sont ensuite déplacées en hauteur avec la charge qu'elles portent, dans la même position inclinée, par l'agencement de traction et de pivotement (5) avec le cadre de levage (3). L'agencement de traction et de pivotement (5) est disposé dans le cadre de levage (3) et comprend un point d'application (8) de la traction sous forme d'une poulie et un point de pivotement (9) des fourches sous forme d'au moins un excentrique, d'un coin ou d'un vérin hydraulique qui agit sur les fourches (1). En soi, l'agencement de traction et de pivotement (5) est sollicité par un ressort. Les fourches (1) non sollicitées restent dans une position horizontale de départ et se déplacent automatiquement à l'encontre de la sollicitation du ressort sur un trajet limité jusqu'à leur position de pivotement par rapport au cadre de levage (3).
PCT/EP1989/001450 1988-12-03 1989-11-29 Dispositif de reglage d'une fourche porteuse de charges dans une position de support inclinee vers le haut WO1990006280A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19883840748 DE3840748A1 (de) 1988-12-03 1988-12-03 Vorrichtung zum einstellen von lastaufnehmenden gabelzinken in eine schraeg nach oben gerichtete tragstellung
DEP3840748.5 1988-12-03

Publications (1)

Publication Number Publication Date
WO1990006280A1 true WO1990006280A1 (fr) 1990-06-14

Family

ID=6368377

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1989/001450 WO1990006280A1 (fr) 1988-12-03 1989-11-29 Dispositif de reglage d'une fourche porteuse de charges dans une position de support inclinee vers le haut

Country Status (3)

Country Link
AU (1) AU4657689A (fr)
DE (1) DE3840748A1 (fr)
WO (1) WO1990006280A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1169260B1 (fr) * 1999-04-14 2003-09-17 FPS Food Processing Systems B.V. Dispositif de levage pour de piles de plateaux
DE102008026130A1 (de) * 2008-05-30 2009-12-03 Still Sas Hubanordnung für ein Flurförderzeug
MX2017003250A (es) * 2014-09-11 2017-11-30 Kl Products Inc Aparato automatizado para descarga de estanterias.

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1941767A (en) * 1927-12-03 1934-01-02 Elwell Parker Electric Co Industrial truck
GB575488A (en) * 1943-09-24 1946-02-20 Greenwood & Batley Ltd Improvements in or relating to automotive lifting trucks and like vehicles
GB696581A (en) * 1950-07-21 1953-09-02 Donald Mayer King Improvements in or relating to apparatus for stacking, transporting, or otherwise handling stacks or piles of articles
DE1022165B (de) * 1956-09-03 1958-01-02 Hans Still Ag Lasttraeger fuer Stapelgeraete mit selbsttaetiger Neigevorrichtung des die Last aufnehmenden Gliedes
US3144137A (en) * 1962-01-30 1964-08-11 Manning Maxwell & Mooer Inc Stacker crane
GB1158126A (en) * 1965-08-18 1969-07-16 Om Spa Improvements in or relating to Fork-Lift Trucks
GB1317860A (en) * 1971-08-20 1973-05-23 Bygg Och Transportekonomie Ab Lift truck
US3998345A (en) * 1974-04-05 1976-12-21 Missouri Research Laboratories, Inc. Side loader for fork lift trucks

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1941767A (en) * 1927-12-03 1934-01-02 Elwell Parker Electric Co Industrial truck
GB575488A (en) * 1943-09-24 1946-02-20 Greenwood & Batley Ltd Improvements in or relating to automotive lifting trucks and like vehicles
GB696581A (en) * 1950-07-21 1953-09-02 Donald Mayer King Improvements in or relating to apparatus for stacking, transporting, or otherwise handling stacks or piles of articles
DE1022165B (de) * 1956-09-03 1958-01-02 Hans Still Ag Lasttraeger fuer Stapelgeraete mit selbsttaetiger Neigevorrichtung des die Last aufnehmenden Gliedes
US3144137A (en) * 1962-01-30 1964-08-11 Manning Maxwell & Mooer Inc Stacker crane
GB1158126A (en) * 1965-08-18 1969-07-16 Om Spa Improvements in or relating to Fork-Lift Trucks
GB1317860A (en) * 1971-08-20 1973-05-23 Bygg Och Transportekonomie Ab Lift truck
US3998345A (en) * 1974-04-05 1976-12-21 Missouri Research Laboratories, Inc. Side loader for fork lift trucks

Also Published As

Publication number Publication date
DE3840748A1 (de) 1990-06-07
AU4657689A (en) 1990-06-26

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