EP0283637A1 - Mât pour élévateurs à fourche ayant les vérins de levage situés dans les montants latéraux - Google Patents

Mât pour élévateurs à fourche ayant les vérins de levage situés dans les montants latéraux Download PDF

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Publication number
EP0283637A1
EP0283637A1 EP88100108A EP88100108A EP0283637A1 EP 0283637 A1 EP0283637 A1 EP 0283637A1 EP 88100108 A EP88100108 A EP 88100108A EP 88100108 A EP88100108 A EP 88100108A EP 0283637 A1 EP0283637 A1 EP 0283637A1
Authority
EP
European Patent Office
Prior art keywords
mast
shapes
lifting
fork lifts
lifting cylinders
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.)
Withdrawn
Application number
EP88100108A
Other languages
German (de)
English (en)
Inventor
Giovanni Bozzi
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.)
ELECAR SpA
Original Assignee
ELECAR SpA
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 ELECAR SpA filed Critical ELECAR SpA
Publication of EP0283637A1 publication Critical patent/EP0283637A1/fr
Withdrawn legal-status Critical Current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 following invention relates to mast particularly conceived to the used on fork lifts, with the lifting cylinders built inside the lateral shapes with which they form a single piece.
  • the disposition of the parts in particular allows more practicability in comparison with similar known devices, together with other advantages which will be shown further on.
  • the masts used on fork lifts are made of a telescopic structure, formed by one or more couples of shapes sliding along their own axis one inside the other, actioned by means of oledynamic plungers or the like.
  • the load lifting brackets are mounted over the mobile part of the mast.
  • FIG. 1 An example of this known type mast is shown in fig (1) and includes a mobile part 1 which runs along a fixed structure 2 actioned by a plunger 3.
  • the following invention presents a new fork-lift mast wherein the lifting cylinders are embodied in the side-ways telescopic shapes, so to leave a wide empty space without obstacles in front of the operator, and without interfering with the other components.
  • the cylinders chamerbs are obtained in the shapes embodying a guide having a "C" section for the second sliding stage.
  • the mast according to the invention comprises a first structure formed by a pair of shapes or guides 4 mounted on the fork lift, and of a second mobile structure with side-ways shapes which slide along the guides 4.
  • the shapes 4 are connected by a higher cross bar 5 and a lower one 7.
  • a bracket-holder plate 8 can run along the mobile structure; this plate is fixed at the end of a chain which runs over pulleys 9 mounted over the mobile structure, and at the other end, it is connected to the cross-shape 5 of the fixed structure.
  • the lifting of the mobile structure causes, by means of the chain return, the lifting of the plate 8 at twice the speed.
  • the shifting of the mobile structure occurs by means of a pair of plungers 10; the characteristic of the invention is that the chambers of the plungers 10 are obtained directly inside the shapes, a preferred shape of which is shown, sectionned, in fig. 4.
  • the shape has a C section which defines a runway 11 for the mobile part 6 and which shows, in correspondance with one of the wings, an enlarged part shown in its whole with 12, where a chamber 13 is obtained for the plunger 10.
  • the plungers 10 can be of any known type (simple or double effect) although hydraulic or diving plungers in this case are more advantageous.
  • the plunger consistutes a moving wall determining the volume variation of the chamber in which the fluid flows
  • the chamber keeps a constant volume and the variation of the fluid volume is determined by the variation of the portion of the plunger which is immersed in the chamber itself.
  • the section of the shapes 4 could be of the type shown in fig. 5, where we find two parallel chambers, to reduce width encumbrance, or in fig. 6, where we find a unique chamber in the middle.
EP88100108A 1987-03-13 1988-01-07 Mât pour élévateurs à fourche ayant les vérins de levage situés dans les montants latéraux Withdrawn EP0283637A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT3350587U IT213665Z2 (it) 1987-03-13 1987-03-13 Montante in particolare per carrelli,con i cilindri di sollevamento incoroporati nei profili
IT3350587U 1987-03-13

Publications (1)

Publication Number Publication Date
EP0283637A1 true EP0283637A1 (fr) 1988-09-28

Family

ID=11237548

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88100108A Withdrawn EP0283637A1 (fr) 1987-03-13 1988-01-07 Mât pour élévateurs à fourche ayant les vérins de levage situés dans les montants latéraux

Country Status (2)

Country Link
EP (1) EP0283637A1 (fr)
IT (1) IT213665Z2 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999029617A1 (fr) * 1997-12-08 1999-06-17 Stephen Henry Currie Ameliorations apportees a des elevateurs a fourche
US6241454B1 (en) 1999-03-29 2001-06-05 Hans Ruf Lift truck vehicle, with a positioning means
EP1304308A1 (fr) * 2001-10-19 2003-04-23 Rocla Oyj Mât pour chariot élévateur
GB2387376A (en) * 2002-04-10 2003-10-15 Lansing Linde Ltd Lifting mast for an industrial truck
EP1781564A1 (fr) * 2004-07-06 2007-05-09 Rocla Oyj Mat de chariot elevateur a fourche
CN100396591C (zh) * 2003-04-18 2008-06-25 罗克拉公司 货车门架
KR100940051B1 (ko) 2003-04-17 2010-02-04 로클라 오이즈 트럭 마스트
DE102009039218A1 (de) * 2009-08-28 2011-03-03 Jungheinrich Aktiengesellschaft Hubgerüst für Flurförderzeuge
AU2013204839B2 (en) * 2013-03-08 2015-07-09 Up First Construction Systems Pty Ltd Building System

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2456320A (en) * 1947-02-24 1948-12-14 Ross Carrier Company Lift truck
FR2192061A1 (fr) * 1972-07-06 1974-02-08 Linde Ag
EP0047137A1 (fr) * 1980-08-28 1982-03-10 Coventry Climax Limited Mât pour chariot élévateur
GB2091211A (en) * 1981-01-15 1982-07-28 Inst Elektrokari Motokari Lifting gear for e.g. a fork-lift truck
DE3423415A1 (de) * 1983-06-27 1985-01-17 Komatsu Forklift K.K., Tokio/Tokyo Mastaufbau fuer einen gabelstapler

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2456320A (en) * 1947-02-24 1948-12-14 Ross Carrier Company Lift truck
FR2192061A1 (fr) * 1972-07-06 1974-02-08 Linde Ag
EP0047137A1 (fr) * 1980-08-28 1982-03-10 Coventry Climax Limited Mât pour chariot élévateur
GB2091211A (en) * 1981-01-15 1982-07-28 Inst Elektrokari Motokari Lifting gear for e.g. a fork-lift truck
DE3423415A1 (de) * 1983-06-27 1985-01-17 Komatsu Forklift K.K., Tokio/Tokyo Mastaufbau fuer einen gabelstapler

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999029617A1 (fr) * 1997-12-08 1999-06-17 Stephen Henry Currie Ameliorations apportees a des elevateurs a fourche
US6368050B1 (en) 1997-12-08 2002-04-09 Stephen Henry Currie Fork lifts
US6241454B1 (en) 1999-03-29 2001-06-05 Hans Ruf Lift truck vehicle, with a positioning means
US7121384B2 (en) 2001-10-19 2006-10-17 Rocla Oyj Truck mast
EP1304308A1 (fr) * 2001-10-19 2003-04-23 Rocla Oyj Mât pour chariot élévateur
GB2387376A (en) * 2002-04-10 2003-10-15 Lansing Linde Ltd Lifting mast for an industrial truck
GB2387376B (en) * 2002-04-10 2005-12-21 Lansing Linde Ltd Industrial trucks having lifting masts
KR100940051B1 (ko) 2003-04-17 2010-02-04 로클라 오이즈 트럭 마스트
CN100396591C (zh) * 2003-04-18 2008-06-25 罗克拉公司 货车门架
EP1781564A1 (fr) * 2004-07-06 2007-05-09 Rocla Oyj Mat de chariot elevateur a fourche
EP1781564A4 (fr) * 2004-07-06 2012-04-25 Rocla Oyj Mat de chariot elevateur a fourche
DE102009039218A1 (de) * 2009-08-28 2011-03-03 Jungheinrich Aktiengesellschaft Hubgerüst für Flurförderzeuge
DE102009039218B4 (de) 2009-08-28 2024-01-04 Jungheinrich Aktiengesellschaft Hubgerüst für Flurförderzeuge
AU2013204839B2 (en) * 2013-03-08 2015-07-09 Up First Construction Systems Pty Ltd Building System

Also Published As

Publication number Publication date
IT213665Z2 (it) 1990-01-22
IT8733505V0 (it) 1987-03-13

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