EP1748024B1 - Lift truck with a horizontally movable arm - Google Patents

Lift truck with a horizontally movable arm Download PDF

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Publication number
EP1748024B1
EP1748024B1 EP06013427A EP06013427A EP1748024B1 EP 1748024 B1 EP1748024 B1 EP 1748024B1 EP 06013427 A EP06013427 A EP 06013427A EP 06013427 A EP06013427 A EP 06013427A EP 1748024 B1 EP1748024 B1 EP 1748024B1
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EP
European Patent Office
Prior art keywords
push frame
torsion shaft
stacker according
guideways
side push
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EP06013427A
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German (de)
French (fr)
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EP1748024A3 (en
EP1748024A2 (en
Inventor
Michael Dipl.-Ing. Schönauer
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Jungheinrich AG
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Jungheinrich AG
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Publication of EP1748024A2 publication Critical patent/EP1748024A2/en
Publication of EP1748024A3 publication Critical patent/EP1748024A3/en
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    • 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
    • B66F9/14—Platforms; Forks; Other load supporting or gripping members laterally movable, e.g. swingable, for slewing or transverse movements
    • B66F9/147—Whole unit including fork support moves relative to mast

Definitions

  • the invention relates to a three-way stacker according to the preamble of patent claim 1.
  • Such a three-way forklift is out about DE 31 41 215 A known. It is used, for example, as a rack conveyor. At the front end a soschub- or guide frame is arranged transversely to the longitudinal axis of the device. Depending on the version of the side push frame is fixedly connected to the vehicle or guided approximately on a mast in height. Finally, it is also possible to attach the side push frame to the front of the cabin of the vehicle, which is movable in total on the mast in height. In this case, the three-way stacker is a picking device. On the side push frame, a boom is moved horizontally.
  • the boom consists of two sections, namely a first section guided on the side push frame and a second section rotatably mounted about a vertical axis.
  • a first section guided on the side push frame and a second section rotatably mounted about a vertical axis.
  • At the second section is either directly a holder for a load supporting means, such as a fork attached or, for example, an additional mast on which the fork holder can be moved in height.
  • a load supporting means such as a fork attached or, for example, an additional mast on which the fork holder can be moved in height.
  • a preferably hydraulic drive the second section and thus the load fork or the mast can be pivoted about a vertical axis in an angle range of 0 to 180 °.
  • the hydraulic lines for supplying the drives to the moving parts are combined and guided in a suitable manner so that they can follow the horizontal movement of the boom.
  • To transfer weight from the boom on the side push frame rollers are arranged on the boom, which cooperate with
  • the invention has for its object to provide a three-way stacker in which the wear on gears and racks is minimized in ensuring a smooth running of the boom on the side push frame.
  • the spacer rollers can be rotatable or preferably non-rotatably seated on the torsion shaft.
  • the Abstandsröllen are each arranged on the end of the torsion shaft side facing away from the gears and the guideways respectively in the space between the racks.
  • each rack contains at least one parallel track, with which the spacer rollers cooperate.
  • the racks can also form a track for a guide roller of the boom.
  • the upper rack has an upper surface on which rests about a horizontal axis rotatable guide roller.
  • the torsion shaft is rotatably mounted in the first section of the boom.
  • an embodiment of the invention provides that the torsion shaft is mounted in an upper and a lower bearing component, for example a bearing plate attached to the boom, wherein the guide roller is in turn rotatably mounted on the bearing member.
  • the wear on the tooth flanks of the gear and rack is reduced, which increases the service life.
  • the smoothness of the boom on the side push frame improves.
  • the adjustment work can be reduced during assembly.
  • the invention enables a compact and inexpensive design, since the torsion wave is used as a carrier part.
  • FIGS. 1 and 2 is a side push frame 10 of a three-way forklift designated 10.
  • the three-way forklift is not shown otherwise. In that regard, about DE 31 41 215 A1 Referenced.
  • the side push frame 10 is mounted horizontally on the front of the three-way forklift, for example on the vehicle itself or on a mast or on a height-adjustable guided on the mast cab.
  • the side push frame has a cross-sectionally U-shaped frame section 12, whereby a channel 14 is formed.
  • a flat rail 16 is attached, for example by screwing.
  • a rack 18 is attached, for example, also by screwing, which is not shown in detail.
  • Rail 16 and rack 18 are horizontal.
  • a further flat rail is attached. While the flat sides of the rail 16 extend horizontally, the flat sides of the rail 20 extend vertically.
  • a rack 22 is attached on the rail 20, a rack 22 is attached. The toothing of the rack 22 does not extend completely across the width of the rod, but a slightly recessed portion 24 is provided, which forms a horizontally extending vertical track 26.
  • the rail 16 also forms on the side facing the toothing of the rack 18 side a track 28. This is also slightly set back relative to the toothing of the rack 18.
  • the raceways 26, 28 extend in a common plane. However, they can also lie in parallel planes. In addition, they run parallel to the parallel racks 18, 22.
  • a boom 30, which extends generally perpendicular to the frame profile 12, has an upper bearing plate 32 and a lower bearing plate 34, which on a stable Housing are mounted, which is indicated at 36.
  • the bearing plates 32, 34 rotatably support a torsion shaft 38, on which an upper gear 40 and a lower gear 42 are arranged rotationally fixed.
  • the gears 40, 42 mesh with the teeth of the racks 18, 22.
  • the torsion shaft 38 is driven in rotation by a hydraulic drive 46.
  • On the bearing plate 32 two guide rollers are rotatably mounted about a vertical axis at the bottom, of which one at 50 in Fig. 2 can be seen.
  • the guide rollers 50 act with a in Fig. 1 rear guideway of the rack 18 together.
  • two guide rollers are rotatably mounted, one of which in Fig. 2 at 52. They act with a guideway on the back ( Fig. 1 ) of the rack 22 together.
  • the guide rollers 50, 52 receive the weight moment of the boom 30 about an axis parallel to the longitudinal axis of the side push frame 10.
  • a further guide roller 54 is rotatably mounted about a horizontal axis. It cooperates with an upper guide track of the rack 18 and absorbs the weight of the boom. Preferably, two such rollers can be provided.
  • the bearing plate 60 On the housing 36 of the arm 30 is horizontally extending at the lower end of an arm 58 is attached to which a further, transversely extending bearing plate 60 is attached.
  • the bearing plate 60 carries a rotary arm 66 via an upper arm 62 or a lower arm 64. Its housing is supported by a block 68 from a mast 70, in which a lifting cylinder 72 is guided, which in turn is supported on the block 68.
  • the lifting mast 70 can be rotated about a vertical axis 72a, preferably between 0 and 180 °.
  • a carriage or fork carriage 76 On the mast 70, a carriage or fork carriage 76 is guided in height, which can be adjusted by means of a chain, not shown, and the lifting cylinder 72 in height.
  • a sensor bearing is indicated at 78, with which the lifting height of the carriage 76 is determined.
  • the hydraulic power supply for the drives 46, 66 and the cylinder 72 must of course take place from the carrier vehicle, wherein the hydraulic lines are summarized accordingly (not shown) and are guided by the profile frame 12. They may be guided in a loop (not shown) in the channel 14, so that the boom 30 can move freely along the side push frame 10.
  • the boom 30 moves horizontally according to the double arrow 80.
  • the fork lift carrier 76 moves along the double arrow 82 and upon actuation of the rotary drive 66, the mast 70 rotates about the axis 72a according to the double arrow 84 ,
  • the gears 40, 42 rotate, causing the boom 30 to move along the racks 18, 22.
  • the guide rollers 50, 52 and 54 are based on the facing guideways or surfaces of the racks 18, 22 from.
  • an upper spacer roller 86 and a lower spacer roller 88 As further in the FIGS. 1 and 2 recognizable sitting on the torsion shaft 38, an upper spacer roller 86 and a lower spacer roller 88.
  • the spacer roller 86 rolls on a guideways 26, 28 from. With the help of the spacer rollers 86, 88 a predetermined distance between the gears 40, 42 and the racks 18, 22 is set.

Description

Die Erfindung bezieht sich auf einen Dreiseitenstapler nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a three-way stacker according to the preamble of patent claim 1.

Ein derartiger Dreiseitenstapler ist etwa aus DE 31 41 215 A bekannt geworden. Er wird beispielsweise als Regalfördergerät eingesetzt. Am vorderen Ende ist quer zur Längsachse des Gerätes ein Seitenschub- oder Führungsrahmen angeordnet. Je nach Ausführung ist der Seitenschubrahmen ortsfest mit dem Fahrzeug verbunden oder etwa an einem Hubmast in der Höhe geführt. Schließlich ist auch möglich, den Seitenschubrahmen an der Vorderseite der Kabine des Fahrzeugs anzubringen, die insgesamt am Hubmast in der Höhe verfahrbar ist. In diesem Falle stellt der Dreiseitenstapler ein Kommissioniergerät dar. Am Seitenschubrahmen ist ein Ausleger horizontal verfahrbar. Der Ausleger besteht aus zwei Abschnitten, nämlich einem ersten am Seitenschubrahmen geführten Abschnitt und einem um eine vertikale Achse drehbar gelagerten zweiten Abschnitt. An dem zweiten Abschnitt ist entweder unmittelbar ein Halter für ein Lasttragmittel, beispielsweise eine Gabel, angebracht oder zum Beispiel ein Zusatzmast, an dem der Gabelhalter in der Höhe verfahren werden kann. Mit Hilfe eines vorzugsweise hydraulischen Antriebs kann der zweite Abschnitt und somit die Lastgabel bzw. der Mast um eine vertikale Achse in einem Winkelbereich von 0 bis 180° verschwenkt werden. Die hydraulischen Leitungen zur Versorgung der Antriebe an den beweglichen Teilen sind zusammengefaßt und in geeigneter Weise geführt, so daß sie der Horizontalbewegung des Auslegers folgen können. Zur Gewichtsübertragung vom Ausleger auf den Seitenschubrahmen sind am Ausleger Rollen angeordnet, die mit U-förmigen Führungsbahnen zusammenwirken. Am Seitenschubrahmen sind horizontal verlaufende, parallel im Abstand angeordnete Zahnstangen angebracht, mit denen Ritzel oder Zahnräder am Ausleger zusammenwirken. Die Ritzel oder Zahnräder sitzen drehfest auf einer gemeinsamen Torsionswelle, die ihrerseits von einem geeigneten Antrieb angetrieben ist. Mit Hilfe des Antriebs läßt sich der Ausleger horizontal verfahren. Zugleich sorgt die Torsionswelle für eine Stabilisierung um eine Achse parallel zur Längsachse des Fahrzeugs.Such a three-way forklift is out about DE 31 41 215 A known. It is used, for example, as a rack conveyor. At the front end a Seitenschub- or guide frame is arranged transversely to the longitudinal axis of the device. Depending on the version of the side push frame is fixedly connected to the vehicle or guided approximately on a mast in height. Finally, it is also possible to attach the side push frame to the front of the cabin of the vehicle, which is movable in total on the mast in height. In this case, the three-way stacker is a picking device. On the side push frame, a boom is moved horizontally. The boom consists of two sections, namely a first section guided on the side push frame and a second section rotatably mounted about a vertical axis. At the second section is either directly a holder for a load supporting means, such as a fork attached or, for example, an additional mast on which the fork holder can be moved in height. By means of a preferably hydraulic drive, the second section and thus the load fork or the mast can be pivoted about a vertical axis in an angle range of 0 to 180 °. The hydraulic lines for supplying the drives to the moving parts are combined and guided in a suitable manner so that they can follow the horizontal movement of the boom. To transfer weight from the boom on the side push frame rollers are arranged on the boom, which cooperate with U-shaped guideways. On the side push frame horizontally extending, parallel spaced racks are mounted, with which pinion or gears interact on the boom. The pinions or gears are non-rotatably mounted on a common torsion shaft, which in turn of a suitable drive is driven. With the help of the drive, the boom can be moved horizontally. At the same time, the torsion shaft provides for stabilization about an axis parallel to the longitudinal axis of the vehicle.

Die Dynamik der Schubbewegung des Auslegers führt zu einem Verschleiß von Zahnstange und Zahnrädern. Mit der Zeit stellt sich ein unruhiger Lauf ein, der den Verschleiß noch weiter beschleunigt.The dynamics of the thrust movement of the boom leads to wear of rack and gears. Over time, a restless run sets in, accelerating wear even further.

Der Erfindung liegt die Aufgabe zugrunde, einen Dreiseitenstapler zu schaffen, bei dem der Verschleiß an Zahnrädern und Zahnstangen minimiert ist bei Sicherstellung eines ruhigen Laufs des Auslegers am Seitenschubrahmen.The invention has for its object to provide a three-way stacker in which the wear on gears and racks is minimized in ensuring a smooth running of the boom on the side push frame.

Diese Aufgabe wird durch das Merkmal des Patentanspruchs 1 gelöst.This object is solved by the feature of claim 1.

Bei der Erfindung sind parallel zu den Zahnstangen Führungsbahnen an Seitenschubrahmen angeordnet, und auf der Welle sitzen Abstandsrollen, die mit den Führungsbahnen zusammenwirken und den Abstand der Zahnräder von den Zahnstangen festlegen.In the invention, parallel to the racks guide tracks are arranged on side push frame, and on the shaft sit spacer rollers which cooperate with the guideways and set the distance of the gears of the racks.

Bei der Erfindung ist dafür gesorgt, daß die Zahnräder stets einen definierten Abstand von den Zahnstangen haben.In the invention it is ensured that the gears always have a defined distance from the racks.

Die Abstandsrollen können drehbar oder vorzugsweise drehfest auf der Torsionswelle sitzen. Nach einer Ausgestaltung der Erfindung sind die Abstandsröllen jeweils auf der dem Ende der Torsionswelle abgewandten Seite der Zahnräder und die Führungsbahnen jeweils in dem Zwischenraum zwischen den Zahnstangen angeordnet.The spacer rollers can be rotatable or preferably non-rotatably seated on the torsion shaft. According to one embodiment of the invention, the Abstandsröllen are each arranged on the end of the torsion shaft side facing away from the gears and the guideways respectively in the space between the racks.

Die Führungsbahnen können von Schienen gebildet sein, die am Seitenschubrahmen angeordnet sind. Vorzugsweise enthält jede Zahnstange mindestens eine parallele Führungsbahn, mit der die Abstandsrollen zusammenwirken. Nach einer weiteren Ausgestaltung der Erfindung können die Zahnstangen zugleich eine Laufbahn für eine Führungsrolle des Auslegers bilden. In diesem Zusammenhang sieht eine weitere Ausgestaltung der Erfindung vor, daß die obere Zahnstange eine obere Fläche aufweist, auf der eine um eine horizontale Achse drehbare Führungsrolle aufliegt.The guideways may be formed by rails which are arranged on the side push frame. Preferably, each rack contains at least one parallel track, with which the spacer rollers cooperate. According to a further embodiment of the invention, the racks can also form a track for a guide roller of the boom. In this context, a further embodiment of the invention provides that the upper rack has an upper surface on which rests about a horizontal axis rotatable guide roller.

Die Torsionswelle ist im ersten Abschnitt des Auslegers drehbar gelagert. Hierzu sieht eine Ausgestaltung der Erfindung vor, daß die Torsionswelle in einem oberen und einem unteren Lagerbauteil gelagert ist, beispielsweise einer am Ausleger angebrachten Lagerplatte, wobei die Führungsrolle ihrerseits am Lagerbauteil drehbar gelagert ist.The torsion shaft is rotatably mounted in the first section of the boom. For this purpose, an embodiment of the invention provides that the torsion shaft is mounted in an upper and a lower bearing component, for example a bearing plate attached to the boom, wherein the guide roller is in turn rotatably mounted on the bearing member.

Mit der Erfindung werden mehrere Vorteile erzielt. Der Verschleiß an den Zahnflanken von Zahnrad und Zahnstange wird reduziert, wodurch die Lebensdauer erhöht wird. Darüber hinaus verbessert sich die Laufruhe des Auslegers am Seitenschubrahmen. Durch vorgefertigte Bauteile läßt sich die Einstellarbeit bei der Montage verringern. Die Erfindung ermöglicht eine kompakte und wenig aufwendige Bauart, da die Torsionswelle als Trägerteil eingesetzt wird.Several advantages are achieved with the invention. The wear on the tooth flanks of the gear and rack is reduced, which increases the service life. In addition, the smoothness of the boom on the side push frame improves. By prefabricated components, the adjustment work can be reduced during assembly. The invention enables a compact and inexpensive design, since the torsion wave is used as a carrier part.

Ein Ausführungsbeispiel der Erfindung soll nachfolgend anhand von Zeichnungen näher erläutert werden.

Fig. 1
zeigt perspektivisch einen Seitenschubrahmen mit Ausleger für einen Dreiseitenstapler nach der Erfindung.
Fig. 2
zeigt eine Endansicht der Darstellung nach Fig. 1.
An embodiment of the invention will be explained below with reference to drawings.
Fig. 1
shows in perspective a side push frame with boom for a three-way stacker according to the invention.
Fig. 2
shows an end view of the illustration Fig. 1 ,

In den Figuren 1 und 2 ist ein Seitenschubrahmen 10 eines Dreiseitenstaplers mit 10 bezeichnet. Der Dreiseitenstapler ist im übrigen nicht gezeigt. Insoweit wird etwa auf DE 31 41 215 A1 Bezug genommen. Der Seitenschubrahmen 10 ist horizontal an der Vorderseite des Dreiseitenstaplers angebracht, beispielsweise am Fahrzeug selbst oder an einem Hubmast oder auch an einer am Hubmast höhenverstellbar geführten Kabine.In the FIGS. 1 and 2 is a side push frame 10 of a three-way forklift designated 10. The three-way forklift is not shown otherwise. In that regard, about DE 31 41 215 A1 Referenced. The side push frame 10 is mounted horizontally on the front of the three-way forklift, for example on the vehicle itself or on a mast or on a height-adjustable guided on the mast cab.

Der Seitenschubrahmen weist ein im Querschnitt U-förmiges Rahmenprofil 12 auf, wodurch ein Kanal 14 gebildet wird. An der Oberseite des Rahmenprofils 12 ist eine flache Schiene 16 angebracht, beispielsweise durch Verschraubung. An der Schiene 16 ist eine Zahnstange 18 angebracht, beispielsweise ebenfalls durch Verschraubung, was im einzelnen nicht dargestellt ist. Schiene 16 und Zahnstange 18 verlaufen horizontal. An der Unterseite des Rahmenprofils 12 ist eine weitere flache Schiene angebracht. Während die Flachseiten der Schiene 16 horizontal verlaufen, erstrecken sich die Flachseiten der Schiene 20 vertikal. An der Schiene 20 ist eine Zahnstange 22 angebracht. Die Zahnung der Zahnstange 22 erstreckt sich nicht vollständig über die Breite der Stange, vielmehr ist ein leicht zurückversetzter Abschnitt 24 vorgesehen, der eine horizontal sich erstreckende vertikale Laufbahn 26 bildet. Die Schiene 16 bildet an der zur Zahnung der Zahnstange 18 gerichteten Seite hin ebenfalls eine Laufbahn 28. Auch diese ist geringfügig gegenüber der Zahnung der Zahnstange 18 zurückversetzt. Die Laufbahnen 26, 28 erstrecken sich in einer gemeinsamen Ebene. Sie können jedoch auch in parallelen Ebenen liegen. Außerdem verlaufen sie parallel zu den parallelen Zahnstangen 18, 22.The side push frame has a cross-sectionally U-shaped frame section 12, whereby a channel 14 is formed. At the top of the frame profile 12, a flat rail 16 is attached, for example by screwing. On the rail 16, a rack 18 is attached, for example, also by screwing, which is not shown in detail. Rail 16 and rack 18 are horizontal. At the bottom of the frame profile 12, a further flat rail is attached. While the flat sides of the rail 16 extend horizontally, the flat sides of the rail 20 extend vertically. On the rail 20, a rack 22 is attached. The toothing of the rack 22 does not extend completely across the width of the rod, but a slightly recessed portion 24 is provided, which forms a horizontally extending vertical track 26. The rail 16 also forms on the side facing the toothing of the rack 18 side a track 28. This is also slightly set back relative to the toothing of the rack 18. The raceways 26, 28 extend in a common plane. However, they can also lie in parallel planes. In addition, they run parallel to the parallel racks 18, 22.

Ein Ausleger 30, der sich generell senkrecht zum Rahmenprofil 12 erstreckt, weist eine obere Lagerplatte 32 und eine untere Lagerplatte 34 auf, die an einem stabilen Gehäuse montiert sind, das bei 36 angedeutet ist. Die Lagerplatten 32, 34 lagern drehbar eine Torsionswelle 38, auf der ein oberes Zahnrad 40 und ein unteres Zahnrad 42 drehfest angeordnet sind. Die Zahnräder 40, 42 kämmen mit der Zahnung der Zahnstangen 18, 22. Die Torsionswelle 38 wird von einem hydraulischen Antrieb 46 drehend angetrieben. An der Lagerplatte 32 sind an der Unterseite zwei Führungsrollen um eine vertikale Achse drehbar gelagert, von denen eine bei 50 in Fig. 2 zu erkennen ist. Die Führungsrollen 50 wirken mit einer in Fig. 1 rückseitigen Führungsbahn der Zahnstange 18 zusammen. An der unteren Lagerplatte 34 sind ebenfalls zwei Führungsrollen drehbar gelagert, von denen eine in Fig. 2 bei 52 gezeigt ist. Sie wirken mit einer Führungsbahn an der Rückseite (Fig. 1) der Zahnstange 22 zusammen. Die Führungsrollen 50, 52 nehmen das Gewichtsmoments des Auslegers 30 um eine Achse parallel zur Längsachse des Seitenschubrahmens 10 auf.A boom 30, which extends generally perpendicular to the frame profile 12, has an upper bearing plate 32 and a lower bearing plate 34, which on a stable Housing are mounted, which is indicated at 36. The bearing plates 32, 34 rotatably support a torsion shaft 38, on which an upper gear 40 and a lower gear 42 are arranged rotationally fixed. The gears 40, 42 mesh with the teeth of the racks 18, 22. The torsion shaft 38 is driven in rotation by a hydraulic drive 46. On the bearing plate 32, two guide rollers are rotatably mounted about a vertical axis at the bottom, of which one at 50 in Fig. 2 can be seen. The guide rollers 50 act with a in Fig. 1 rear guideway of the rack 18 together. At the lower bearing plate 34 also two guide rollers are rotatably mounted, one of which in Fig. 2 at 52. They act with a guideway on the back ( Fig. 1 ) of the rack 22 together. The guide rollers 50, 52 receive the weight moment of the boom 30 about an axis parallel to the longitudinal axis of the side push frame 10.

In der Lagerplatte 32 ist eine weitere Führungsrolle 54 um eine horizontale Achse drehbar gelagert. Sie wirkt mit einer oberen Führungsbahn der Zahnstange 18 zusammen und nimmt die Gewichtskraft des Auslegers auf. Vorzugsweise können auch zwei derartige Rollen vorgesehen werden.In the bearing plate 32, a further guide roller 54 is rotatably mounted about a horizontal axis. It cooperates with an upper guide track of the rack 18 and absorbs the weight of the boom. Preferably, two such rollers can be provided.

Am Gehäuse 36 des Auslegers 30 ist sich horizontal erstreckend am unteren Ende ein Arm 58 angebracht, an dem eine weitere, sich quer erstreckende Lagerplatte 60 befestigt ist. Die Lagerplatte 60 trägt über einen oberen Arm 62 oder einen unteren Arm 64 einen Drehantrieb 66. Sein Gehäuse stützt über einen Block 68 einen Hubmast 70 ab, in dem ein Hubzylinder 72 geführt ist, der sich seinerseits am Block 68 abstützt. Mit Hilfe des Drehantriebs 66 kann der Hubmast 70 um eine vertikale Achse 72a gedreht werden, vorzugsweise zwischen 0 und 180°. Am Hubmast 70 ist ein Schlitten oder Gabelträger 76 in der Höhe geführt, der mit Hilfe einer nicht gezeigten Kette und des Hubzylinders 72 in der Höhe verstellt werden kann. Ein derartiger Hubantrieb ist allgemein bei Flurförderzeugen bekannt und soll daher nicht näher beschrieben werden. In Fig. 1 oder 2 ist bei 78 ein Sensorlager angedeutet, mit dem die Hubhöhe des Schlittens 76 bestimmt wird.On the housing 36 of the arm 30 is horizontally extending at the lower end of an arm 58 is attached to which a further, transversely extending bearing plate 60 is attached. The bearing plate 60 carries a rotary arm 66 via an upper arm 62 or a lower arm 64. Its housing is supported by a block 68 from a mast 70, in which a lifting cylinder 72 is guided, which in turn is supported on the block 68. With the aid of the rotary drive 66, the lifting mast 70 can be rotated about a vertical axis 72a, preferably between 0 and 180 °. On the mast 70, a carriage or fork carriage 76 is guided in height, which can be adjusted by means of a chain, not shown, and the lifting cylinder 72 in height. One Such lifting drive is generally known in industrial trucks and should therefore not be described in detail. In Fig. 1 or 2 a sensor bearing is indicated at 78, with which the lifting height of the carriage 76 is determined.

Die hydraulische Energieversorgung für die Antriebe 46, 66 und den Zylinder 72 muß naturgemäß vom Trägerfahrzeug aus erfolgen, wobei die Hydraulikleitungen entsprechend zusammengefaßt sind (nicht gezeigt) und durch den Profilrahmen 12 geführt sind. Sie können in einer im Kanal 14 bewegten Schlaufe geführt werden (nicht gezeigt), so daß sich der Ausleger 30 entlang des Seitenschubrahmens 10 ungehindert bewegen kann. Bei einem Antrieb der Torsionswelle 38 bewegt sich der Ausleger 30 horizontal entsprechend dem Doppelpfeil 80. Bei Betätigung des Zylinders 72 bewegt sich der Gabelhubträger 76 entlang des Doppelpfeils 82 und bei Betätigung des Drehantriebs 66 dreht sich der Mast 70 entsprechend dem Doppelpfeil 84 um die Achse 72a.The hydraulic power supply for the drives 46, 66 and the cylinder 72 must of course take place from the carrier vehicle, wherein the hydraulic lines are summarized accordingly (not shown) and are guided by the profile frame 12. They may be guided in a loop (not shown) in the channel 14, so that the boom 30 can move freely along the side push frame 10. Upon actuation of the torsion shaft 38, the boom 30 moves horizontally according to the double arrow 80. Upon actuation of the cylinder 72, the fork lift carrier 76 moves along the double arrow 82 and upon actuation of the rotary drive 66, the mast 70 rotates about the axis 72a according to the double arrow 84 ,

Bei Betätigung des Antriebs 46 drehen sich die Zahnräder 40, 42, wodurch der Ausleger 30 entlang den Zahnstangen 18, 22 bewegt wird. Die Führungsrollen 50, 52 und 54 stützen sich dabei an den zugekehrten Führungsbahnen oder -flächen der Zahnstangen 18, 22 ab.Upon actuation of the drive 46, the gears 40, 42 rotate, causing the boom 30 to move along the racks 18, 22. The guide rollers 50, 52 and 54 are based on the facing guideways or surfaces of the racks 18, 22 from.

Wie ferner in den Figuren 1 und 2 erkennbar, sitzen auf der Torsionswelle 38 eine obere Abstandsrolle 86 und eine untere Abstandsrolle 88. Die Abstandsrolle 86 rollt auf einer Führungsbahnen 26, 28 ab. Mit Hilfe der Abstandsrollen 86, 88 wird ein vorgegebener Abstand zwischen den Zahnrädern 40, 42 und den Zahnstangen 18, 22 eingestellt.As further in the FIGS. 1 and 2 recognizable sitting on the torsion shaft 38, an upper spacer roller 86 and a lower spacer roller 88. The spacer roller 86 rolls on a guideways 26, 28 from. With the help of the spacer rollers 86, 88 a predetermined distance between the gears 40, 42 and the racks 18, 22 is set.

Claims (8)

  1. A three-side stacker with a side push frame (10) at one end of the stacker, on which a side arm (30) is horizontally traversably mounted, wherein the side arm (30) has a first portion mounted by the side push frame and a second portion which is mounted pivotally around a vertical axis on the first portion and holds a load supporting means, a pivoting equipment for the second portion, mounted on the first portion, an upper and a lower horizontal guideway on the side push frame (10), with which guide rolls (50) on the first portion of the side arm (30) co-operate, as well as with an upper and lower toothed rack (18, 22) into which gearwheels (40, 42) engage which sit splinedly on a common torsion shaft (38) which is rotatably mounted in the first portion, and with a rotational drive for the torsion shaft on the first portion, characterised in that guideways (28, 26) are arranged on the side push frame (10) in parallel to the toothed racks (18, 22) and spacer rollers (86, 88) sit on the shaft (38), which co-operate with the guideways and determine the distance of the gearwheels (40, 42) from the toothed racks (18, 22).
  2. A three-side stacker according to claim 1, characterised in that the spacer rollers (86, 88) sit rotatably or splinedly on the torsion shaft (38).
  3. A three-side stacker according to claim 1 or 2, characterised in that the spacer rollers (86, 88) are each arranged on that side of the gearwheels (40, 42) which is turned away from the end of the torsion shaft (38) and the guideways (28, 26) are each arranged in the space between the toothed racks (18, 22).
  4. A three-side stacker according to any one of claims 1 to 3, characterised in that the guideways are formed by rails, which are fixed on the side push frame.
  5. A three-side stacker according to claim 4, characterised in that the parallel guideway is formed on at least one toothed rack (18, 22).
  6. A three-side stacker according to claim 3 or 4, characterised in that one toothed rack forms a running path for the guide roller of the side arm at the same time.
  7. A three-side stacker according to claim 6, characterised in that the upper toothed rack (18) has an upper guideway, on which lays a guide roller (54) which is mounted rotatably around a horizontal axis.
  8. A three-side stacker according to any one of claims 1 to 7, characterised in that the torsion shaft (38) is mounted in an upper and a lower bearing component part (32, 43), which are in turn fixed on the first portion of the side arm (30) and the guide rollers (50, 52, 54) are mounted on the bearing component parts (32, 34).
EP06013427A 2005-07-29 2006-06-29 Lift truck with a horizontally movable arm Active EP1748024B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005035631A DE102005035631A1 (en) 2005-07-29 2005-07-29 Three-sided stacker, has guide tracks on side thrust frame parallel to gear rods whilst distance rollers on torsion shaft interact with guide tracks to fix distance of gear wheels from gear rods

Publications (3)

Publication Number Publication Date
EP1748024A2 EP1748024A2 (en) 2007-01-31
EP1748024A3 EP1748024A3 (en) 2008-01-23
EP1748024B1 true EP1748024B1 (en) 2009-10-14

Family

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Application Number Title Priority Date Filing Date
EP06013427A Active EP1748024B1 (en) 2005-07-29 2006-06-29 Lift truck with a horizontally movable arm

Country Status (4)

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US (1) US20070023259A1 (en)
EP (1) EP1748024B1 (en)
DE (1) DE102005035631A1 (en)
ES (1) ES2334931T3 (en)

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Also Published As

Publication number Publication date
ES2334931T3 (en) 2010-03-17
DE102005035631A1 (en) 2007-02-01
US20070023259A1 (en) 2007-02-01
EP1748024A3 (en) 2008-01-23
EP1748024A2 (en) 2007-01-31

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