EP0504527A1 - A load handling vehicle - Google Patents

A load handling vehicle Download PDF

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Publication number
EP0504527A1
EP0504527A1 EP91310750A EP91310750A EP0504527A1 EP 0504527 A1 EP0504527 A1 EP 0504527A1 EP 91310750 A EP91310750 A EP 91310750A EP 91310750 A EP91310750 A EP 91310750A EP 0504527 A1 EP0504527 A1 EP 0504527A1
Authority
EP
European Patent Office
Prior art keywords
carriage
load carrying
vehicle
condition
carrying means
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Withdrawn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
EP91310750A
Other languages
German (de)
English (en)
French (fr)
Inventor
David Richard Krayem
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.)
GCM 600 Ltd
Original Assignee
GCM 600 Ltd
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 GCM 600 Ltd filed Critical GCM 600 Ltd
Publication of EP0504527A1 publication Critical patent/EP0504527A1/en
Withdrawn legal-status Critical Current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
    • 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
    • B66F9/16—Platforms; Forks; Other load supporting or gripping members inclinable relative to mast
    • 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

Definitions

  • the present invention relates to a load handling vehicle having a load handling assembly which, usually, will comprise forks or a platform.
  • the forks or platform extend generally horizontally and forwardly of the vehicle for load carrying purposes.
  • the forks or platform can be raised or lowered on the vehicle to facilitate load handling.
  • the forwardly projecting load carrying part of the vehicle, such as the forks or platform can add considerably to the overall length of the vehicle and when not in use this projection can be hazardous and inconvenient during manoeuvring or storage of the vehicle.
  • the load carrying part It has hitherto been proposed for the load carrying part to be pivotally mounted on the vehicle so that when such part is not required for use, it can be pivotted manually to a stored position in which it is accommodated and retained adjacent to the vehicle to reduce the overall vehicle length.
  • the weight of the pivotally mounted load carrying part may be too great for safe or acceptable adjustment to its stored position by manual effort and it is an object of the present invention to provide a load handling vehicle which alleviates this difficulty whereby a platform, forks or other load carrying or handling part of the vehicle can be adjusted to a relatively unobtrusive stored position in a convenient and relatively simple manner with negligible manual effort.
  • a vehicle having a load handling assembly which assembly comprises a pivotally mounted carriage; carriage control means for pivotting the carriage between a first condition in which the carriage extends upwardly and a second condition in which the carriage extends forwardly/rearwardly of the vehicle; load carrying means pivotally mounted on the carriage to be pivotal between an operative position in which, with the carriage in its first condition, the load carrying means extends forwardly of the carriage for load carrying purposes and a stored position in which the load carrying means is accommodated unobtrusively on the vehicle, and wherein the assembly is arranged so that pivotal displacement of the load carrying means from its operative to its stored position can be accomplished by abutment of the load carrying means with a ground surface and controlled pivotal movement of the carriage from its first condition to its second condition so that the load carrying means is caused to be pivotted from its operative position to its stored position in which position it can be secured relative to the carriage and following which securing the carriage can be pivotted to its first condition carrying with it the load carrying means in its
  • the load carrying means of a heavy duty vehicle such as the forks of a fork lift vehicle, the platform of an elevator on a vehicle, or a similarly projecting load carrying part when not in use can be pivotted to a relatively unobtrusive stored position, usually adjacent to the carriage, thereby facilitating vehicle manoeuvring, vehicle storage or removal of a hazard which may otherwise be presented by the load carrying part in its operative position, by power operated and controlled displacement of the carriage.
  • This displacement of the carriage can achieve the required pivotal movement of the load carrying means from its operative position to its stored position during abutment of the load carrying means with the ground surface on which the vehicle may stand or with other appropriate surface against which the load carrying means can abut during its relative pivotal displacement with the carriage.
  • This pivotal movement of the load carrying means to its stored condition may be achieved solely by use of the carriage control means which is conveniently in the form of a fluid pressure operated ram.
  • the aforementioned pivotal movement can also be facilitated by appropriate manoeuvring of the vehicle and/or, where the load handling assembly is carried at the front end of a telescopic boom, by appropriate adjustment in the length of the boom.
  • the carriage will include releasable securing means such as a latch mechanism by which the load carrying means, when in its stored condition, can be temporarily secured relative to the carriage.
  • releasable securing means such as a latch mechanism by which the load carrying means, when in its stored condition, can be temporarily secured relative to the carriage.
  • the load carrying means has a substantially L-shape, one limb of which presents a load carrying part and the other limb providing a shank part which is pivotally connected to the carriage.
  • the load carrying part With the carriage in its first condition and the load carrying means in its operative condition, the load carrying part can extend forwardly of the vehicle for load carrying purposes and the shank part can extend upwardly adjacent to the carriage and be pivotally mounted at an upper end thereof to the carriage; when the load carrying means is in its stored condition with the carriage in its first position, the shank part can again extend upwardly adjacent to the carriage while the load carrying part extends rearwardly of the vehicle to remove the hazard presented by the projection of that part forwardly of the vehicle.
  • the aforementioned L-shape of the load carrying means is particularly useful when such means is displaceable relative to the carriage to permit the load carrying part to be lowered to a position lower than that of the carriage when the latter is in its first condition.
  • the fork lift vehicle illustrated is for heavy duty load handling and has a body 1 with a driver cab 2 and is manoeuvrable on driven wheels 3. Extending upwardly from the body 1 and to the rear of the cab 2 are struts 4 on which is pivotally mounted at 5 a telescopic boom 6.
  • the boom 6 extends in the fore/aft direction of the vehicle and centrally thereof to overlie the cab 2 and carries at its front end a load handling assembly 7.
  • the boom can be rotated about its pivot 5 for adjusting the elevation of the assembly 7 by hydraulic rams 8.
  • the extension and contraction of the telescopic sections in the boom 6 to vary the positioning of the assembly 7 inwardly or outwardly relative to the body 1 may be effected by fluid pressure operated rams in a manner well known in the art.
  • the front end of the boom 6 on which the load handling assembly 7 is mounted includes a pair of arms 9 which are spaced widthwise of the vehicle and are usually welded at 10 to the front end telescopic section 6a of the boom to form a rigid extension of that section and so that the arms 9 project at right angles to the main length of the boom 6 as shown generally in Figure 2. It is to be appreciated that the structure of the vehicle so far described is by way of example only and that many variations are possible in mounting the assembly 7 at the front end of a vehicle body on appropriate supports similar to those presented by the arms 9.
  • the load handling assembly 7 includes a carriage 20 in the form of a generally upstanding rectangular frame having opposed sides 21 the lower ends of which are pivotted at 22, one to each of the arms 9 to pivotally mount the carriage 20 on the front end of the boom 6. Pivotal movement of the carriage 20 relative to the arms 9 is controlled by a pair of hydraulic rams 23 which connect one between each arm 9 and the adjacent carriage frame side 21. With the vehicle standing on a horizontal ground surface 24, the rams 23 will normally retain the carriage 20 at a pivotted position in which the frame of the carriage is located in a generally vertical plane as shown in Figure 2.
  • a crossbar 25 Located within the frame of the carriage 20 and extending between its sides 21 is a crossbar 25.
  • the bar 25 is accommodated within longitudinally extending slots 26 of the carriage so that it can be displaced vertically relative to the carriage frame when that frame is disposed vertically as shown in Figure 2.
  • the crossbar 25 is controlled by hydraulic rams 27 which react between that bar 25 and a base 28 of the frame 20.
  • the crossbar 25 carries a pair of L-shaped forks 30, one limb of said shape providing a shank 31 and the other limb providing a tine 32.
  • the free end of the shank 31 is mounted by a pivot 33 to a bracket 34 which is carried by the crossbar 35 in the carriage 20 (see Figure 3).
  • the forks 30 hang from their respective brackets 34 with their shanks 31 vertical and adjacent to the carriage 20 while the tines 32 are presented to extend forwardly of the vehicle for load handling purposes in a manner conventional for fork lifts.
  • the brackets 34 may be slidably mounted on the crossbar 25 so that the spacing between the forks 30 can be adjusted as appropriate for load lifting.
  • the rams 27 By extension and contraction of the rams 27 it will be appreciated that the consequential displacement of the crossbar 25 relative to the carriage frame will raise or lower the tines 32 (as indicated by the arrow 40 in Figure 3) for convenience of load handling.
  • the tines 32 are disposed at a lower level than the base 28 of the carriage 20 as shown in Figure 3 - again for convenience of load handling.
  • the rams 23 which control pivotal movement of the carriage 20 will be actuated to maintain the carriage 20 vertical - this may, conveniently, be achieved by appropriate displacement of hydraulic fluid between the cylinders 23 and slave cylinders 41 (see Figures 1 and 2) which react between the boom 6 and struts 4 to extend or retract as appropriate in response to changes in elevation of the boom.
  • the tines 32 when projected for normal fork lift use add considerably to the overall length of the vehicle which may be inconvenient for vehicle storage or manoeuvring and they can also present a hazard.
  • the load handling assembly 7 is arranged so that the forks 30 can be adjusted to an unobtrusive stored condition and in a manner which will now be described with reference to Figures 3 to 5.
  • the forks 30 are lowered to abut the ground surface 24 (by either or both actuation of the rams 27 or lowering the boom 6) as shown in Figure 3.
  • the carriage control rams 23 are now extended as the vehicle is moved rearwardly (in the direction of arrow 50 - Figure 3) causing the carriage 20 to rotate about its pivots 22 on the arms 9 and in the direction of arrow 42 ( Figure 3) while the forks 30 simultaneously rotate in the direction of arrow 43 about their pivots 33.
  • pivotal movement can be achieved (possibly without movement of the vehicle) by lowering the forks onto the ground surface 24 as shown in Figure 3 with the telescopic boom 6 in an extended condition and subsequently retracting the boom to provide the same effect as rearward movement of the vehicle.
  • the forks 30 can be adjusted from their operative position shown in Figure 3 to their stored position shown in Figure 5 solely by use of the power which is available in the vehicle thereby alleviating an operator from attempting to move the forks to their stored position manually. Furthermore, if the latches 44 are biased to automatically engage with the fork shanks 31 during pivotal movement of the carriage to the position shown in Figure 4, it will be appreciated that the driver of the fork lift vehicle can control the load handling assembly to adopt the stored condition shown in Figure 5 without leaving the cab 2.

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)
  • Loading Or Unloading Of Vehicles (AREA)
EP91310750A 1991-03-20 1991-11-21 A load handling vehicle Withdrawn EP0504527A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9105882A GB2253831A (en) 1991-03-20 1991-03-20 Load handling vehicle
GB9105882 1991-03-20

Publications (1)

Publication Number Publication Date
EP0504527A1 true EP0504527A1 (en) 1992-09-23

Family

ID=10691874

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91310750A Withdrawn EP0504527A1 (en) 1991-03-20 1991-11-21 A load handling vehicle

Country Status (8)

Country Link
EP (1) EP0504527A1 (ja)
JP (1) JPH05124798A (ja)
KR (1) KR920017882A (ja)
FI (1) FI915665A (ja)
GB (1) GB2253831A (ja)
IE (1) IE914571A1 (ja)
NO (1) NO914866L (ja)
PT (1) PT100105A (ja)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2724374A1 (fr) * 1994-09-14 1996-03-15 Manitou Bf Chariot de manutention motorise apte a etre embarque a l'arriere d'un vehicule porteur
EP0701963A1 (fr) * 1994-09-14 1996-03-20 Manitou Bf Chariot de manutention motorisé à bras téléscopique
EP0816282A1 (en) * 1996-06-25 1998-01-07 J.C. Bamford Excavators Limited Material handling vehicle
EP0869100A1 (en) * 1997-04-04 1998-10-07 J.C. Bamford Excavators Limited Material handling implement
EP1273717A1 (de) * 2001-07-02 2003-01-08 Thomas Sauer Fahrbarer Schaufellader
FR2851238A1 (fr) * 2003-02-14 2004-08-20 Lamy Les Constructeurs Equipement de manutention et vehicule avec un tel equipement
US7383906B2 (en) 2002-08-29 2008-06-10 Jlg Industries, Inc. Rotatable and telescopic work machine
US11284611B2 (en) 2019-02-28 2022-03-29 Cnh Industrial America Llc System and method for actuating a boom assembly of an agricultural sprayer

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19816981A1 (de) * 1998-04-17 1999-11-04 Rudolf Kollmuss Horizontal oder vertikal ausgerichtete Vorrichtung zum Heben von Lasten

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2698698A (en) * 1952-09-22 1955-01-04 Kellog Co Lifting attachment for industrial trucks
DE1029290B (de) * 1956-12-10 1958-04-30 Irion & Vosseler Vorrichtung zum Greifen und Stapeln von Faessern
FR2085472A1 (ja) * 1970-04-24 1971-12-24 Guichard Jean
US3814272A (en) * 1971-06-14 1974-06-04 R Spratt Balanced fork lift truck
US3825139A (en) * 1973-06-11 1974-07-23 Koehring Co Means for locking forklift truck forks in stored position
US3966064A (en) * 1972-08-29 1976-06-29 John Phil Felburn Multi-purpose vehicle
DE2739325A1 (de) * 1976-09-03 1978-03-09 Loed Corp Verladefahrzeug
GB2137956A (en) * 1983-04-04 1984-10-17 Towmotor Corp Apparatus comprising a load engaging member
US4948326A (en) * 1987-05-22 1990-08-14 Henry Bedard Load lifting attachment mounted on a truck frame
US4986721A (en) * 1989-08-17 1991-01-22 Eagle-Picher Industries, Inc. Extendable boom fork lift vehicle

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2698698A (en) * 1952-09-22 1955-01-04 Kellog Co Lifting attachment for industrial trucks
DE1029290B (de) * 1956-12-10 1958-04-30 Irion & Vosseler Vorrichtung zum Greifen und Stapeln von Faessern
FR2085472A1 (ja) * 1970-04-24 1971-12-24 Guichard Jean
US3814272A (en) * 1971-06-14 1974-06-04 R Spratt Balanced fork lift truck
US3966064A (en) * 1972-08-29 1976-06-29 John Phil Felburn Multi-purpose vehicle
US3825139A (en) * 1973-06-11 1974-07-23 Koehring Co Means for locking forklift truck forks in stored position
DE2739325A1 (de) * 1976-09-03 1978-03-09 Loed Corp Verladefahrzeug
GB2137956A (en) * 1983-04-04 1984-10-17 Towmotor Corp Apparatus comprising a load engaging member
US4948326A (en) * 1987-05-22 1990-08-14 Henry Bedard Load lifting attachment mounted on a truck frame
US4986721A (en) * 1989-08-17 1991-01-22 Eagle-Picher Industries, Inc. Extendable boom fork lift vehicle

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2724374A1 (fr) * 1994-09-14 1996-03-15 Manitou Bf Chariot de manutention motorise apte a etre embarque a l'arriere d'un vehicule porteur
EP0701963A1 (fr) * 1994-09-14 1996-03-20 Manitou Bf Chariot de manutention motorisé à bras téléscopique
US5813821A (en) * 1994-09-14 1998-09-29 Manitou Bf Motorized lift truck adapted to be loaded on the rear of a carrying vehicle
EP0816282A1 (en) * 1996-06-25 1998-01-07 J.C. Bamford Excavators Limited Material handling vehicle
US6056503A (en) * 1996-06-25 2000-05-02 J C Bamford Excavators Limited Material handling vehicle
US6132164A (en) * 1996-06-25 2000-10-17 J. C. Bamford Excavators Limited Material handling vehicle
EP0869100A1 (en) * 1997-04-04 1998-10-07 J.C. Bamford Excavators Limited Material handling implement
EP1273717A1 (de) * 2001-07-02 2003-01-08 Thomas Sauer Fahrbarer Schaufellader
US7383906B2 (en) 2002-08-29 2008-06-10 Jlg Industries, Inc. Rotatable and telescopic work machine
FR2851238A1 (fr) * 2003-02-14 2004-08-20 Lamy Les Constructeurs Equipement de manutention et vehicule avec un tel equipement
US11284611B2 (en) 2019-02-28 2022-03-29 Cnh Industrial America Llc System and method for actuating a boom assembly of an agricultural sprayer
US11751556B2 (en) 2019-02-28 2023-09-12 Cnh Industrial America Llc System and method for actuating a boom assembly of an agricultural sprayer

Also Published As

Publication number Publication date
GB9105882D0 (en) 1991-05-08
FI915665A (fi) 1992-09-21
NO914866L (no) 1992-09-21
IE914571A1 (en) 1992-09-23
JPH05124798A (ja) 1993-05-21
FI915665A0 (fi) 1991-11-29
PT100105A (pt) 1994-03-31
KR920017882A (ko) 1992-10-21
NO914866D0 (no) 1991-12-11
GB2253831A (en) 1992-09-23

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