EP1466861B1 - Mast for a lift truck - Google Patents

Mast for a lift truck Download PDF

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Publication number
EP1466861B1
EP1466861B1 EP20040008358 EP04008358A EP1466861B1 EP 1466861 B1 EP1466861 B1 EP 1466861B1 EP 20040008358 EP20040008358 EP 20040008358 EP 04008358 A EP04008358 A EP 04008358A EP 1466861 B1 EP1466861 B1 EP 1466861B1
Authority
EP
European Patent Office
Prior art keywords
industrial truck
steel profile
metal sheet
cut
mast
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
EP20040008358
Other languages
German (de)
French (fr)
Other versions
EP1466861A1 (en
Inventor
Michael Meinhardt
Walter Unger
Matthias Vohrer
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.)
Still Wagner GmbH and Co KG
Original Assignee
Still Wagner GmbH and Co KG
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 Still Wagner GmbH and Co KG filed Critical Still Wagner GmbH and Co KG
Publication of EP1466861A1 publication Critical patent/EP1466861A1/en
Application granted granted Critical
Publication of EP1466861B1 publication Critical patent/EP1466861B1/en
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
    • B66F9/08—Masts; Guides; Chains

Definitions

  • the invention relates to an industrial truck, in particular for a high rack truck, with a hoist having two spaced apart in the transverse direction of the truck masts, each stand mast of a steel profile and at least one along the steel profile extending, welded to the steel profile sheet is formed and at least one Sheet has an at least approximately flat surface, which is aligned substantially perpendicular to the transverse direction of the truck.
  • each stand mast is assigned at least one extension mast, which is displaceably guided on the stationary mast in the vertical direction.
  • Standing masts of the prior art are usually made of a single continuous steel profile.
  • the cross-section of this steel profile is designed such that it has sufficient moments of inertia in the longitudinal direction and in the transverse direction of the truck.
  • the steel profile is shaped such that it has at least one running surface for a guide roller of the extension mast. This requires a complicated shape and thus a complex production of steel profiles.
  • the steel profile used for the hoists of each load class is specially designed. This means that different profiles are used for different hoists, which differ in terms of their strength and thus their moments of inertia.
  • the present invention is based on the object to provide the construction of an industrial truck, in which the same steel profiles can be used for different load classes of the hoist.
  • At least one sheet in the region of the flat surface has at least one cutout. Both the steel profile and the sheet contribute to the rigidity of the mast.
  • the running surfaces for the guide rollers are formed exclusively by the steel profiles.
  • the combination of steel profile and sheet metal allows a simple and easy execution of the steel profile, since the sheet also contributes to the rigidity of the arrangement.
  • At least one metal sheet has an at least approximately flat surface, which is aligned substantially perpendicular to the transverse direction of the industrial truck. The flat surface is thus aligned vertically and is parallel to the longitudinal direction of the truck.
  • the sheet contributes in particular to increase the rigidity of the stationary mast in the longitudinal direction of the truck.
  • the targeted application of cutouts, the ratio of weight and rigidity of the sheet and thus the stand mast can be optimized.
  • the cutouts allow a view through the stand mast in the transverse direction of the truck.
  • the section is - viewed in the longitudinal direction of the truck - arranged on the side facing away from the steel profile of the flat surface.
  • the sheet In the area of the welded connection with the steel profile, the sheet is thus continuous from top to bottom.
  • At the side facing away from the steel profile of the cutouts closes again from top to bottom continuous section of the sheet.
  • This continuous section may be angled 90 degrees relative to the flat surface.
  • the steel profile facing side of the cutout has a curved, preferably a partially elliptical shape. This prevents the formation of stress peaks at the edges of the cutouts.
  • At least one sheet has a plurality of similar, in the vertical direction spaced-apart cutouts.
  • At least one sheet is angled in such a way that it has a flat section, which is aligned substantially perpendicular to the longitudinal axis of the truck.
  • the rigidity of the stand mast can be adjusted by the dimensions of the angled flat section.
  • FIG. 1 shows an inventive hoist of a high-bay truck in perspective view.
  • the hoist has two uprights 1, 2, on which the extension masts 3 are guided by means not shown guide rollers in the vertical direction movable.
  • a lifting slide 4 is guided vertically displaceable, which has a mounting plate 5 for attachment of a load-receiving means, for example a pivoting thrust fork.
  • a car for an operator can be fastened, which is also raised with the lifting carriage 4.
  • the drive of the lifting movement of the extension masts 3 and the lifting carriage 4 by means of hydraulic lifting cylinder. 6
  • each stand mast 1, 2 consists of a steel section 7, 8 and welded thereto sheets 9, 10.
  • the sheets 9, 10 each have a flat surface, which is aligned perpendicular to the transverse direction of the hoist and thus of the truck. In these flat surfaces cutouts 11 are provided which allow the view in the transverse direction of the truck, but also allow a passage of cables and access to the inner parts of the hoist.
  • Angled flat sections 13 of the sheets 9, 10 increase the rigidity of the uprights 1, 2.
  • Both the steel sections 7, 8, as well as the sheets 9, 10 contribute to the stiffness of the hoist. Due to the orientation of the flat surfaces increase the sheets 9, 10 in particular the moment of inertia of the uprights about the transverse axis of the hoist. An adaptation of this moment of inertia of the uprights can be done with unchanged steel section 7, 8 by varying the thickness and / or the width of the sheets 9, 10. The height of the hoist can be easily selected by selection a longer steel section 7,8 in combination with additional or longer sheets 9, 10 are varied.

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Forklifts And Lifting Vehicles (AREA)

Description

Die Erfindung betrifft ein Flurförderzeug, insbesondere für ein Hochregalflurförderzeug, mit einem Hubwerk, das zwei in Querrichtung des Flurförderzeugs beabstandeten Standmasten aufweist, wobei jeder Standmast von einem Stahlprofil und mindestens einem sich längs des Stahlprofils erstreckenden, an das Stahlprofil angeschweißten Blech gebildet ist und mindestens ein Blech eine zumindest annähemd ebene Fläche aufweist, die im Wesentlichen senkrecht zu der Querrichtung des Flurförderzeugs ausgerichtet ist.The invention relates to an industrial truck, in particular for a high rack truck, with a hoist having two spaced apart in the transverse direction of the truck masts, each stand mast of a steel profile and at least one along the steel profile extending, welded to the steel profile sheet is formed and at least one Sheet has an at least approximately flat surface, which is aligned substantially perpendicular to the transverse direction of the truck.

Die Standmasten des Hubwerks sind bei Hochregalflurförderzeugen starr mit dem Rahmen des Hochregalflurförderzeugs verbunden und im Wesentlichen senkrecht ausgerichtet. Bei anderen Flurförderzeugen, wie beispielsweise Gegengewichtsgabelstaplern, sind die Standmasten häufig neigbar an dem Rahmen befestigt. Üblicherweise ist jedem Standmast mindestens ein Ausfahrmast zugeordnet, der an dem Standmast in vertikaler Richtung verschiebbar geführt ist.The uprights of the hoist are rigidly connected to the frame of the high-bay industrial truck and aligned substantially vertically in high-bay industrial trucks. In other trucks, such as counterbalance forklifts, the masts are often tiltably attached to the frame. Usually, each stand mast is assigned at least one extension mast, which is displaceably guided on the stationary mast in the vertical direction.

Standmasten des Standes der Technik bestehen in der Regel aus einem einzigen durchgehenden Stahlprofil. Der Querschnitt dieses Stahlprofils ist derart ausgelegt, dass es ausreichende Trägheitsmomente in Längsrichtung und in Querrichtung des Flurförderzeugs aufweist. Gleichzeitig ist das Stahlprofil derart geformt, dass es mindestens eine Lauffläche für eine Führungsrolle des Ausfahrmasts aufweist. Dies bedingt eine komplizierte Formgebung und damit eine aufwändige Herstellung der Stahlprofile. Üblicherweise ist das verwendete Stahlprofil für die Hubwerke jeder Tragkraftklasse speziell ausgelegt. Dies bedeutet, dass für unterschiedliche Hubwerke auch unterschiedliche Profile verwendet werden, die sich hinsichtlich ihrer Stärke und damit ihrer Trägheitsmomente unterscheiden.Standing masts of the prior art are usually made of a single continuous steel profile. The cross-section of this steel profile is designed such that it has sufficient moments of inertia in the longitudinal direction and in the transverse direction of the truck. At the same time, the steel profile is shaped such that it has at least one running surface for a guide roller of the extension mast. This requires a complicated shape and thus a complex production of steel profiles. Usually, the steel profile used for the hoists of each load class is specially designed. This means that different profiles are used for different hoists, which differ in terms of their strength and thus their moments of inertia.

Aus der DE 196 31 511 A1 ist ein Hubwerk bekannt, dessen Masten aus Metallprofilen mit aufgeschweißten Blechen bestehen.From the DE 196 31 511 A1 is a hoist known whose masts consist of metal profiles with welded sheets.

Der vorliegenden Erfindung liegt die Aufgabe zu Grunde, die Konstruktion eines Flurförderzeugs zur Verfügung zu stellen, bei der für unterschiedliche Tragkraftklassen des Hubwerks gleiche Stahlprofile verwendet werden können.The present invention is based on the object to provide the construction of an industrial truck, in which the same steel profiles can be used for different load classes of the hoist.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass mindestens ein Blech im Bereich der ebenen Fläche mindestens einen Ausschnitt aufweist. Sowohl das Stahlprofil, als auch das Blech tragen zu der Steifigkeit des Standmasts bei. Die Laufflächen für die Führungsrollen sind ausschließlich von den Stahlprofilen gebildet. Die Kombination von Stahlprofil und Blech erlaubt eine einfache und leichte Ausführung des Stahlprofils, da auch das Blech zur Steifigkeit der Anordnung beiträgt. Mindestens ein Blech weist eine zumindest annähemd ebene Fläche auf, die im Wesentlichen senkrecht zu der Querrichtung des Flurförderzeugs ausgerichtet ist. Die ebene Fläche ist damit vertikal ausgerichtet und ist parallel zu der Längsrichtung des Flurförderzeugs. Damit trägt das Blech insbesondere zur Erhöhung der Steifigkeit des Standmastes in Längsrichtung des Flurförderzeugs bei. Durch das gezielte Anbringen von Ausschnitten kann das Verhältnis von Gewicht und Steifigkeit des Blechs und damit des Standmasts optimiert werden. Darüber hinaus ermöglichen die Ausschnitte eine Durchsicht durch den Standmast in Querrichtung des Flurförderzeugs.This object is achieved in that at least one sheet in the region of the flat surface has at least one cutout. Both the steel profile and the sheet contribute to the rigidity of the mast. The running surfaces for the guide rollers are formed exclusively by the steel profiles. The combination of steel profile and sheet metal allows a simple and easy execution of the steel profile, since the sheet also contributes to the rigidity of the arrangement. At least one metal sheet has an at least approximately flat surface, which is aligned substantially perpendicular to the transverse direction of the industrial truck. The flat surface is thus aligned vertically and is parallel to the longitudinal direction of the truck. Thus, the sheet contributes in particular to increase the rigidity of the stationary mast in the longitudinal direction of the truck. The targeted application of cutouts, the ratio of weight and rigidity of the sheet and thus the stand mast can be optimized. In addition, the cutouts allow a view through the stand mast in the transverse direction of the truck.

Der Ausschnitt ist - in Längsrichtung des Flurförderzeugs betrachtet - an der dem Stahlprofil abgewandten Seite der ebenen Fläche angeordnet. Im Bereich der Schweißverbindung mit dem Stahlprofil ist das Blech damit von oben bis unten durchgehend. An die dem Stahlprofil abgewandte Seite der Ausschnitte schließt sich wieder ein von oben bis unten durchgehender Abschnitt des Blechs an. Dieser durchgehende Abschnitt kann gegenüber der ebenen Fläche um 90 Grad abgewinkelt sein.The section is - viewed in the longitudinal direction of the truck - arranged on the side facing away from the steel profile of the flat surface. In the area of the welded connection with the steel profile, the sheet is thus continuous from top to bottom. At the side facing away from the steel profile of the cutouts closes again from top to bottom continuous section of the sheet. This continuous section may be angled 90 degrees relative to the flat surface.

Die dem Stahlprofil zugewandte Seite des Ausschnitts weist eine gebogene, vorzugsweise eine teilelliptische Form auf. Damit wird die Entstehung von Spannungsspitzen an den Kanten der Ausschnitte verhindert.The steel profile facing side of the cutout has a curved, preferably a partially elliptical shape. This prevents the formation of stress peaks at the edges of the cutouts.

Vorzugsweise weist mindestens eine Blech mehrere gleichartige, in senkrechter Richtung voneinander beabstandete Ausschnitte auf.Preferably, at least one sheet has a plurality of similar, in the vertical direction spaced-apart cutouts.

Weiter ist es vorteilhaft, wenn mindestens ein Blech derart abgewinkelt ist, dass es einen flächigen Abschnitt aufweist, der im Wesentlichen senkrecht zu der Längsachse des Flurförderzeugs ausgerichtet ist. Die Steifigkeit des Standmasts kann durch die Abmessungen des abgewinkelten flächigen Abschnitts eingestellt werden.Further, it is advantageous if at least one sheet is angled in such a way that it has a flat section, which is aligned substantially perpendicular to the longitudinal axis of the truck. The rigidity of the stand mast can be adjusted by the dimensions of the angled flat section.

Weitere Vorteile und Einzelheiten der Erfindung werden anhand des in den schematischen Figuren dargestellten Ausführungsbeispiels näher erläutert. Dabei zeigt

Figur 1
ein erfindungsgemäßes Hubwerk,
Figur 2
die Standmasten eines erfindungsgemäßen Hubwerks.
Further advantages and details of the invention will be explained in more detail with reference to the embodiment shown in the schematic figures. It shows
FIG. 1
an inventive hoist,
FIG. 2
the uprights of a hoist invention.

Figur 1 zeigt ein erfindungsgemäßes Hubwerk eines Hochregalflurförderzeugs in perspektivischer Ansicht. Das Hubwerk weist zwei Standmasten 1, 2 auf, an denen die Ausfahrmasten 3 mittels nicht dargestellter Führungsrollen in vertikaler Richtung bewegbar geführt sind. An den Ausfahrmasten 3 wiederum ist ein Hubschlitten 4 vertikal verschiebbar geführt, der eine Befestigungsplatte 5 zur Befestigung eines Lastaufnahmemittels, beispielsweise einer Schwenkschubgabel, aufweist. Zwischen der Befestigungsplatte 5 und den Ausfahrmasten 3 ist ein Fahrkorb für eine Bedienperson befestigbar, der ebenfalls mit dem Hubschlitten 4 angehoben wird. Der Antrieb der Hubbewegung der Ausfahrmasten 3 und des Hubschlittens 4 erfolgt mittels hydraulischer Hubzylinder 6.Figure 1 shows an inventive hoist of a high-bay truck in perspective view. The hoist has two uprights 1, 2, on which the extension masts 3 are guided by means not shown guide rollers in the vertical direction movable. On the extension masts 3, in turn, a lifting slide 4 is guided vertically displaceable, which has a mounting plate 5 for attachment of a load-receiving means, for example a pivoting thrust fork. Between the mounting plate 5 and the extension masts 3, a car for an operator can be fastened, which is also raised with the lifting carriage 4. The drive of the lifting movement of the extension masts 3 and the lifting carriage 4 by means of hydraulic lifting cylinder. 6

In Figur 2 sind die Standmasten 1, 2 im Detail dargestellt. Jeder Standmast 1, 2 besteht aus einem Stahlprofil 7, 8 und daran angeschweißten Blechen 9, 10. Im unteren Bereich der Standmasten 1, 2, in dem keine Bleche befestigt sind, befinden sich Befestigungselemente 12 zur Anbindung des Hubwerks an einen Rahmen des Hochregalflurförderzeugs. Die Bleche 9, 10 weisen jeweils eine ebene Fläche auf, die senkrecht zu der Querrichtung des Hubwerks und damit des Flurförderzeugs ausgerichtet ist. In diesen ebenen Flächen sind Ausschnitte 11 vorgesehen, die die Durchsicht in Querrichtung des Flurförderzeugs erlauben, aber auch eine Durchführung von Leitungen und einen Zugriff auf die innen liegenden Teile des Hubwerks ermöglichen. Abgewinkelte flächige Abschnitte 13 der Bleche 9, 10 erhöhen die Steifigkeit der Standmasten 1, 2.In Figure 2, the uprights 1, 2 are shown in detail. Each stand mast 1, 2 consists of a steel section 7, 8 and welded thereto sheets 9, 10. In the lower part of the uprights 1, 2, in which no metal sheets are attached, there are fasteners 12 for connecting the hoist to a frame of the high rack truck. The sheets 9, 10 each have a flat surface, which is aligned perpendicular to the transverse direction of the hoist and thus of the truck. In these flat surfaces cutouts 11 are provided which allow the view in the transverse direction of the truck, but also allow a passage of cables and access to the inner parts of the hoist. Angled flat sections 13 of the sheets 9, 10 increase the rigidity of the uprights 1, 2.

Sowohl die Stahlprofile 7, 8, als auch die Bleche 9, 10 liefern einen Beitrag zur Steifigkeit des Hubwerks. Aufgrund der Ausrichtung der ebenen Flächen erhöhen die Bleche 9, 10 insbesondere das Trägheitsmoment der Standmasten um die Querachse des Hubwerks. Eine Anpassung dieses Trägheitsmoments der Standmasten kann bei unverändertem Stahlprofil 7, 8 durch Variation der Stärke und/oder der Breite der Bleche 9, 10 erfolgen. Die Höhe der Hubwerks kann in einfacher Weise durch Auswahl eines längeren Stahlprofils 7,8 in Kombination mit zusätzlichen oder längeren Blechen 9, 10 variiert werden.Both the steel sections 7, 8, as well as the sheets 9, 10 contribute to the stiffness of the hoist. Due to the orientation of the flat surfaces increase the sheets 9, 10 in particular the moment of inertia of the uprights about the transverse axis of the hoist. An adaptation of this moment of inertia of the uprights can be done with unchanged steel section 7, 8 by varying the thickness and / or the width of the sheets 9, 10. The height of the hoist can be easily selected by selection a longer steel section 7,8 in combination with additional or longer sheets 9, 10 are varied.

Claims (5)

  1. Industrial truck, in particular for a high-lift industrial truck, comprising a lifting unit, which has two upright masts (1, 2) spaced apart in the transverse direction of the industrial truck, each upright mast (1, 2) being formed from a steel profile (7, 8) and at least one metal sheet (9, 10) extending along the steel profile (7, 8) and welded to the steel profile (7, 8) and at least one metal sheet (9, 10) having an at least approximately flat face, which is directed substantially perpendicularly to the transverse direction of the industrial truck, characterised in that at least one metal sheet (9, 10) has at least one cut-out (11) in the region of the flat face.
  2. Industrial truck according to claim 1, characterised in that the cut-out (11) - viewed in the longitudinal direction of the industrial truck - is arranged on the side of the flat face remote from the steel profile (7, 8).
  3. Industrial truck according to claim 1 or 2, characterised in that the side of the cut-out (11) facing the steel profile (7, 8) has a bent, preferably partially elliptical shape.
  4. Industrial truck according to any one of claims 1 to 3, characterised in that the at least one metal sheet (9, 10) has a plurality of similar cut-outs (11) spaced apart from one another in the vertical direction.
  5. Industrial truck according to any one of claims 1 to 4, characterised in that at least one metal sheet (9, 10) is angled in such a way that it has a level portion (13), which is oriented substantially perpendicular to the longitudinal axis of the industrial truck.
EP20040008358 2003-04-08 2004-04-06 Mast for a lift truck Expired - Lifetime EP1466861B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2003116053 DE10316053A1 (en) 2003-04-08 2003-04-08 Hoist for an industrial truck
DE10316053 2003-04-08

Publications (2)

Publication Number Publication Date
EP1466861A1 EP1466861A1 (en) 2004-10-13
EP1466861B1 true EP1466861B1 (en) 2008-01-09

Family

ID=32864386

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20040008358 Expired - Lifetime EP1466861B1 (en) 2003-04-08 2004-04-06 Mast for a lift truck

Country Status (2)

Country Link
EP (1) EP1466861B1 (en)
DE (2) DE10316053A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114906518B (en) * 2021-02-09 2023-11-07 深圳市海柔创新科技有限公司 Logistics lifting device and warehousing system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1220333B (en) * 1957-05-18 1966-06-30 Clark Equipment Co Lift truck with telescopic mast
GB924053A (en) * 1961-01-02 1963-04-18 Coventry Climax Eng Ltd Improvements relating to goods handling trucks
DE19631511A1 (en) * 1995-09-04 1997-04-03 Wuestenberg Dieter Prof Dr Ing Lightweight mast for hoist giving access to storage shelves
DE29705009U1 (en) * 1997-03-19 1997-06-26 Theodor Klaas GmbH & Co KG, 59387 Ascheberg Roofing crane with modular telescopic sections
DE19817561A1 (en) * 1998-04-20 1999-10-21 Still Wagner Gmbh & Co Kg Commissioner for use in storage areas with high racking and narrow lanes

Also Published As

Publication number Publication date
DE502004005881D1 (en) 2008-02-21
EP1466861A1 (en) 2004-10-13
DE10316053A1 (en) 2004-10-21

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