WO2006059940A1 - Mat pour chariot elevateur - Google Patents

Mat pour chariot elevateur Download PDF

Info

Publication number
WO2006059940A1
WO2006059940A1 PCT/SE2005/001666 SE2005001666W WO2006059940A1 WO 2006059940 A1 WO2006059940 A1 WO 2006059940A1 SE 2005001666 W SE2005001666 W SE 2005001666W WO 2006059940 A1 WO2006059940 A1 WO 2006059940A1
Authority
WO
WIPO (PCT)
Prior art keywords
roller bracket
beams
mast
forks
lift cylinder
Prior art date
Application number
PCT/SE2005/001666
Other languages
English (en)
Inventor
Christer Johansson
Bengt Leander
Original Assignee
Bt Industries
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 Bt Industries filed Critical Bt Industries
Priority to DE212005000057U priority Critical patent/DE212005000057U1/de
Publication of WO2006059940A1 publication Critical patent/WO2006059940A1/fr

Links

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
    • 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
    • B66F9/087—Monomasts

Definitions

  • the present invention is related to masts of trucks of the kind where a couple of load forks are journaled for a lifting movement in a so called mono-mast, that is a centrally placed column-like mast.
  • a truck with accompanying mast is for instance known from DE 196 18 246 Al, where the mast comprise two opposed U-shaped beams between which a roller bracket is arranged moveable in the height direction.
  • the roller bracket is journaled with rollers in the U-shaped beams.
  • the roller bracket extends on the front side of the mast (fork side) out between the U-beams and is fastened in a fork-yoke or the like supporting the forks.
  • a lift cylinder is arranged outside of the beams connected with the roller bracket via a chain transmission gearing up its stroke.
  • the vertical beams are arranged close to each other but with sufficient space between them to accommodate the forward and rearward protruding roller bracket.
  • a drawback at this kind of truck is however that the mast end up precisely in the middle of the field of vision of the truck driver when the truck is driven with the forks first, which -negatively influence the supervision as -well as precision and result in the driver haying to move himself laterally in order to see past the mast. It is thus desirable with a mast that in a lateral direction of the truck is as thin as possible.
  • the vision problem occur also at turning and not least at sharp turning when the driver is more or less at the side of the truck.
  • this type of trucks being frequently used inside for instance superstores during opening hours, that is in the presence of customers that sometimes can be numerous.
  • a solution to this problem could be to place the mast off center, for instance in one of the front corners instead of centrally. Certainly this will improve the vision straight forward but it still means the same loss of vision and even a larger loss of vision when the driver turns sharply and is on the mast side. Besides the mast is once again an obstacle on one side of the truck.
  • the object of the invention is to provide a mono-mast that is more compact than the previously known ones so that it reduces the field of vision less.
  • the above object is in accordance with the invention at a mast of the above described type (mono-mast) solved by the roller bracket on the side facing away from the forks being provided with a longitudinal recess so that the roller bracket receives a more or less U- or V-shaped cross section.
  • the lift cylinder is arranged entirely or partly between the two beams on the side of the beams facing away from the forks and the recess in the rear side of the roller bracket allow this to pass in front of and on the sides of the lifting cylinder and its piston rod so that the two U-shaped beams can be located close to each other despite the lift cylinder being located between these.
  • the roller bracket is advantageously fastened to the crosswise extending fork yoke by welding.
  • the roller bracket By shaping the roller bracket with a nose protruding precisely above the fork yoke the length of the weld joint is increased, which considerably increase the strength in an otherwise susceptible place. Furthermore in this way ' an unbroken weld line is obtained all the way around which also reduce the risk of cracks and fractures and furthermore the roller bracket is strengthened in this way.
  • the mast in accordance with the invention becomes, as is realized very compact to its cross section with a considerable improvement of the vision field from the side and thus improved safety and precision.
  • fig 1 shows a truck in accordance with the invention in perspective
  • fig 2a - c a roller bracket in perspective and in section
  • fig 3 a cross section through the mast
  • fig 4 a perspective view of the upper end of the mast with one beam and lid removed for the sake of clarity and with the forks and roller bracket in the topmost position.
  • the mast shown in its entirety in fig 1 includes two each other facing U-beams 2.
  • the beams rollers ran that are constituted of spherical roller bearings 3.
  • the spherical roller bearings are arranged on laterally extending dowels 4 on a roller bracket 5.
  • the roller bracket is on its rear side, that is the side facing away from the forks, provided with an eleongate recess 14 so shaped that a space is shaped between U-beams 2 and roller bracket 5 that is sufficient to receive with a certain play a lift cylinder 6 inside the contour described by the outer sides of the U-shaped beams.
  • the U-shaped beams may actually be placed so close to each other that the lift cylinder at mounting has to be pushed in from the upper fork end of the beams.
  • the recess in the roller bracket has the shape of a cylinder surface in order to adapt, with an intermediate play, to the outer shape of the lift cylinder.
  • a chain 7 is fastened that run up over a chain pulley 8 arranged in the upper end of a piston rod 9 belonging to the lift cylinder 6.
  • the chain is fastened on the opposite side to the forks in the mast and when the piston rod is lifted up the measure with which the chain lifts the forks will be the double of the piston lift in a known manner.
  • the chain 7 is, as is apparent from figs 2 and 4, fastened with a pin in a bolt hole 11 bellow the middle of the roller bracket in this and a further recess 12 is arranged in the roller bracket for the chain extending down to the chain fastening 11 so that the roller bracket in its upper end receives an almost V-shaped cross section.
  • the roller bracket in the upper end of the fork lift can pass up above the chain pulley 8 in the upper end of the piston rod 9 so that the entire mast height can be used.
  • the width of the roller bracket essentially corresponds to the width of the cylinder.
  • the U-beams are in the upper -end,- for mounting and dismantling, connected via * a removeable lid 13.
  • the opening on the rear side between the beams is furthermore closed by a cover.

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

Cette invention concerne un mât élévateur mince, appelé mono-mât pour chariots élévateurs, qui comprend deux profilés en U (2) se faisant face l'un l'autre à une courte distance l'un de l'autre, un étrier pour roulements (5) courant entre les profilés et contenant des roulements (3) qui se déplacent dans les profilés en U, et faisant saillie entre les profilés en direction des fourches. Un vérin de levage (6) pour l'élévation des fourches est disposé entièrement ou partiellement à l'intérieur du pourtour externe de celles-ci. L'étrier pour roulements comporte sur son côté opposé aux fourches un évidement longitudinal (14) pour le vérin de levage (6) pour le mouvement montant et descendant de l'étrier pour roulements (5) en face et sur les côtés du vérin de levage, respectivement.
PCT/SE2005/001666 2004-11-06 2005-11-04 Mat pour chariot elevateur WO2006059940A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE212005000057U DE212005000057U1 (de) 2004-11-06 2005-11-04 Flurförderfahrzeug-Mast

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0402702-5 2004-11-06
SE0402702A SE529749C2 (sv) 2004-11-06 2004-11-06 Truckmast

Publications (1)

Publication Number Publication Date
WO2006059940A1 true WO2006059940A1 (fr) 2006-06-08

Family

ID=33488174

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2005/001666 WO2006059940A1 (fr) 2004-11-06 2005-11-04 Mat pour chariot elevateur

Country Status (3)

Country Link
DE (1) DE212005000057U1 (fr)
SE (1) SE529749C2 (fr)
WO (1) WO2006059940A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2177470A2 (fr) * 2008-10-18 2010-04-21 Jungheinrich Aktiengesellschaft Chariot de manutention destiné au transport de palettes spéciales

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009056419B4 (de) * 2009-12-01 2022-01-20 Jungheinrich Aktiengesellschaft Lastteil für ein Flurförderzeug
DE102014113603A1 (de) * 2014-09-19 2016-03-24 Jungheinrich Ag Lastteil für ein Flurförderzeug

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2480066A (en) * 1947-09-25 1949-08-23 Towmotor Corp Mast construction for lift trucks
DE19618246A1 (de) * 1996-04-16 1997-10-23 Jungheinrich Ag Stapler
EP0939055B1 (fr) * 1998-02-27 2002-10-30 Loc Manutention Mât de levage pour appareil de manutention du genre d'un chariot gerbeur

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2480066A (en) * 1947-09-25 1949-08-23 Towmotor Corp Mast construction for lift trucks
DE19618246A1 (de) * 1996-04-16 1997-10-23 Jungheinrich Ag Stapler
EP0939055B1 (fr) * 1998-02-27 2002-10-30 Loc Manutention Mât de levage pour appareil de manutention du genre d'un chariot gerbeur

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2177470A2 (fr) * 2008-10-18 2010-04-21 Jungheinrich Aktiengesellschaft Chariot de manutention destiné au transport de palettes spéciales
EP2177470A3 (fr) * 2008-10-18 2011-05-11 Jungheinrich Aktiengesellschaft Chariot de manutention destiné au transport de palettes spéciales

Also Published As

Publication number Publication date
DE212005000057U1 (de) 2007-08-30
SE0402702L (sv) 2006-05-07
SE529749C2 (sv) 2007-11-13
SE0402702D0 (sv) 2004-11-06

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