EP1787939A3 - Telescopic lift arm for farm vehicles - Google Patents

Telescopic lift arm for farm vehicles Download PDF

Info

Publication number
EP1787939A3
EP1787939A3 EP06022919A EP06022919A EP1787939A3 EP 1787939 A3 EP1787939 A3 EP 1787939A3 EP 06022919 A EP06022919 A EP 06022919A EP 06022919 A EP06022919 A EP 06022919A EP 1787939 A3 EP1787939 A3 EP 1787939A3
Authority
EP
European Patent Office
Prior art keywords
section
integral
arm
flexible element
sections
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Withdrawn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
EP06022919A
Other languages
German (de)
French (fr)
Other versions
EP1787939A2 (en
Inventor
Silvio Scarpetta
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.)
LAVERDA SpA
Original Assignee
LAVERDA 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 LAVERDA SpA filed Critical LAVERDA SpA
Publication of EP1787939A2 publication Critical patent/EP1787939A2/en
Publication of EP1787939A3 publication Critical patent/EP1787939A3/en
Withdrawn legal-status Critical Current

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
    • B66F9/065—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 non-masted
    • B66F9/0655—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 non-masted with a telescopic boom
    • 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
    • B66F9/20—Means for actuating or controlling masts, platforms, or forks
    • B66F9/205—Arrangements for transmitting pneumatic, hydraulic or electric power to movable parts or devices

Abstract

This invention relates to farm vehicles of the telescopic lift type, equipped with a lift arm (1) fitted with an improved drive mechanism.
The arm (1) is of the type comprising a first base section (2) fitted directly to the chassis of a telescopic lift device, a second section (3) which slides inside said first section (2), and a third section (4) which slides inside said second section (3), which said arm (1) also acts as support for pressurised hydraulic pipes (14,15) that connect a pressurised oil generator on board said device to one or more hydraulic jacks (6,13) fitted at the end of said arm (1), the reciprocal movements of said three sections (2,3,4) being controlled by a hydraulic jack (6) which acts directly between said first and second sections (2,3), a system being provided with flexible elements (10,11) stretched between said first and third sections (2,3) and tautened by pulleys integral with said second section, which effects the extension and retraction of said third section (4), and is characterised in that it includes:
• a first flexible element (10) which connects a first part (7), integral with said first base section (2), to a part (4a) integral with said third section (4), said first flexible element (10) being tautened by a first pulley (8) integral with said second section (3);
• a second flexible element (11) which connects a second part (12) integral with said first base section (2) to said part (4a), which is integral with said third section (4), said second flexible element (11) being tautened by a second pulley (9) integral with said second section (3):
• a first pipe (14) which follows the same route as said first flexible element (10) from said first part (7), integral with said first section (2), to said part (4a) of said third section (4);
• a second pipe (15) which connects said part (4a), integral with said third section (4), to said at least one jack present on the end of said arm (1);

said first and second flexible elements (10,11), said first and second pulleys (8,9) and said first and second pipes (14,15) being wholly contained inside said first, second and third sections (2,3,4).
EP06022919A 2005-11-04 2006-11-03 Telescopic lift arm for farm vehicles Withdrawn EP1787939A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMI20052100 ITMI20052100A1 (en) 2005-11-04 2005-11-04 TELESCOPIC ELEVATOR ARM FOR AGRICULTURAL AGRICULTURAL MACHINE

Publications (2)

Publication Number Publication Date
EP1787939A2 EP1787939A2 (en) 2007-05-23
EP1787939A3 true EP1787939A3 (en) 2008-08-27

Family

ID=37983841

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06022919A Withdrawn EP1787939A3 (en) 2005-11-04 2006-11-03 Telescopic lift arm for farm vehicles

Country Status (2)

Country Link
EP (1) EP1787939A3 (en)
IT (1) ITMI20052100A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7287029B2 (en) * 2019-03-19 2023-06-06 株式会社タダノ telescopic boom
FR3116267B1 (en) 2020-11-19 2023-10-27 Manitou Bf TELESCOPIC ARM HANDLING VEHICLE

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4506480A (en) * 1983-03-10 1985-03-26 Calavar Corporation Extensible boom construction for self-propelled aerial work platforms
DE3817340A1 (en) * 1987-05-21 1988-12-15 Hiab Foco Ab Apparatus on crane jibs
DE19613700A1 (en) * 1996-03-29 1997-10-02 M E P Gmbh Ges Fuer Consulting Telescopically interlocking machine part, e.g. for excavator or crane

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4506480A (en) * 1983-03-10 1985-03-26 Calavar Corporation Extensible boom construction for self-propelled aerial work platforms
DE3817340A1 (en) * 1987-05-21 1988-12-15 Hiab Foco Ab Apparatus on crane jibs
DE19613700A1 (en) * 1996-03-29 1997-10-02 M E P Gmbh Ges Fuer Consulting Telescopically interlocking machine part, e.g. for excavator or crane

Also Published As

Publication number Publication date
EP1787939A2 (en) 2007-05-23
ITMI20052100A1 (en) 2007-05-05

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