EP0504527A1 - A load handling vehicle - Google Patents
A load handling vehicle Download PDFInfo
- 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- Withdrawn
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Classifications
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- 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
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- 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
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- 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
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- 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.
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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)
- Loading Or Unloading Of Vehicles (AREA)
Abstract
A vehicle has a load handling assembly 7 comprising a carriage 20 pivotally mounted at 22 on a boom extension 9. A ram 23 controls pivotal movement of the carriage 21. Pivotally mounted at 33 on a crossbar 25 of the carriage 20 are load handling forks 30. By extension of the ram 23 to pivot carriage 20 in the direction of arrow 42 and rearward displacement of the boom extension 9, the forks 30 when abutting the ground surface 24 can be rotated through 180° about pivot 33 so that such forks can be carried on the carriage 20 and directed rearwardly of the vehicle when not in use. A latch 44 can be provided on the carriage 20 to secure the forks in their stored position.
Preferably rams 27 can raise or lower the crossbar 25 in the carriage 20 for varying the height of the forks 30. A platform can be substituted for the forks 30.
Description
- The present invention relates to a load handling vehicle having a load handling assembly which, usually, will comprise forks or a platform.
- In known vehicles of the kind mentioned, the forks or platform extend generally horizontally and forwardly of the vehicle for load carrying purposes. Usually 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. 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. However, with heavy duty load handling vehicles, 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.
- According to the present invention there is provided 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 stored position.
- By the present invention 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.
- Usually 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.
- Preferably the pivotal mounting of the load carrying means is displaceable relative to the carriage and second control means can be provided by which, when the carriage is in its first condition, the load carrying means can be raised or lowered relative to the carriage for convenience of load handling. The second control means conveniently comprises a fluid pressure operated ram which reacts between the carriage and a displaceable frame part on which the load carrying means is pivotally mounted on the carriage. It will be appreciated that other second control means can be utilised such as a motor driven chain as is conventional for controlling fork height in fork lift trucks. Desirably with the carriage in its first condition and the load carrying means in its operative position, the second control means is adjustable to displace the load carrying means so that a load carrying part thereof (such as the tines of a fork lift or the load carrying surface of a platform) can be located at a position lower than that of the carriage to facilitate load handling.
- Preferably 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. 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.
- One embodiment of a fork lift vehicle constructed in accordance with the present invention will now be described, by way of example only, with reference to the accompanying illustrative drawings in which:-
- Figure 1 is a perspective view of the vehicle;
- Figure 2 is a side elevation of the vehicle, and
- Figures 3 to 5 each show a side elevation of the load handling assembly of the vehicle and sequentially illustrate the adjustment of its load carrying forks from an operative position to a stored position in which the forks are unobtrusively accommodated on the vehicle.
- 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 atelescopic boom 6. Theboom 6 extends in the fore/aft direction of the vehicle and centrally thereof to overlie the cab 2 and carries at its front end aload handling assembly 7. The boom can be rotated about itspivot 5 for adjusting the elevation of theassembly 7 byhydraulic rams 8. The extension and contraction of the telescopic sections in theboom 6 to vary the positioning of theassembly 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 theload handling assembly 7 is mounted includes a pair ofarms 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 thearms 9 project at right angles to the main length of theboom 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 theassembly 7 at the front end of a vehicle body on appropriate supports similar to those presented by thearms 9. - The
load handling assembly 7 includes acarriage 20 in the form of a generally upstanding rectangular frame having opposedsides 21 the lower ends of which are pivotted at 22, one to each of thearms 9 to pivotally mount thecarriage 20 on the front end of theboom 6. Pivotal movement of thecarriage 20 relative to thearms 9 is controlled by a pair ofhydraulic rams 23 which connect one between eacharm 9 and the adjacentcarriage frame side 21.
With the vehicle standing on ahorizontal ground surface 24, therams 23 will normally retain thecarriage 20 at a pivotted position in which the frame of the carriage is located in a generally vertical plane as shown in Figure 2. - Located within the frame of the
carriage 20 and extending between itssides 21 is acrossbar 25. Thebar 25 is accommodated within longitudinally extendingslots 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. Thecrossbar 25 is controlled byhydraulic rams 27 which react between thatbar 25 and abase 28 of theframe 20. - The
crossbar 25 carries a pair of L-shaped forks 30, one limb of said shape providing ashank 31 and the other limb providing atine 32. The free end of theshank 31 is mounted by apivot 33 to abracket 34 which is carried by the crossbar 35 in the carriage 20 (see Figure 3). In normal use of the load handling assembly as shown in Figure 2, theforks 30 hang from theirrespective brackets 34 with theirshanks 31 vertical and adjacent to thecarriage 20 while thetines 32 are presented to extend forwardly of the vehicle for load handling purposes in a manner conventional for fork lifts. Thebrackets 34 may be slidably mounted on thecrossbar 25 so that the spacing between theforks 30 can be adjusted as appropriate for load lifting. - By extension and contraction of the
rams 27 it will be appreciated that the consequential displacement of thecrossbar 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. Preferably when therams 27 are fully retracted and with thecarriage 20 disposed vertically, thetines 32 are disposed at a lower level than thebase 28 of thecarriage 20 as shown in Figure 3 - again for convenience of load handling. - During normal use of the fork lift and when the
boom 6 is elevated, therams 23 which control pivotal movement of thecarriage 20 will be actuated to maintain thecarriage 20 vertical - this may, conveniently, be achieved by appropriate displacement of hydraulic fluid between thecylinders 23 and slave cylinders 41 (see Figures 1 and 2) which react between theboom 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. To alleviate these difficulties theload handling assembly 7 is arranged so that theforks 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. - With the
tines 32 presented for normal load handling and thecarriage 20 disposed vertically, theforks 30 are lowered to abut the ground surface 24 (by either or both actuation of therams 27 or lowering the boom 6) as shown in Figure 3. Thecarriage control rams 23 are now extended as the vehicle is moved rearwardly (in the direction of arrow 50 - Figure 3) causing thecarriage 20 to rotate about itspivots 22 on thearms 9 and in the direction of arrow 42 (Figure 3) while theforks 30 simultaneously rotate in the direction of arrow 43 about theirpivots 33. These pivotal movements in the load handling assembly continue until thecarriage 20 is located substantially horizontally to extend forwardly/rearwardly of the vehicle and theforks 30 have rotated through approximately 180° so that theirshanks 31 are again disposed to lie adjacent to the frame of thecarriage 20 as shown in Figure 4. With theforks 30 positioned on thecarriage 20 as shown in Figure 4, those forks may be secured relative to thecarriage 20 by a latch mechanism orcatch 44 which mechanism is conveniently a fitting carried by the carriage. Following attachment of thelatch 44 to the forks, therams 23 are retracted to rotate thecarriage 20 about itspivots 22 and in the direction ofarrow 45 in Figure 4 so that the carriage is again raised into its vertical position and carries with it theforks 30 as shown in Figure 5. As will be seen from Figure 5, thetines 32 are now directed rearwardly of the vehicle to be unobtrusive and in a manner which reduces the overall length of the vehicle and alleviates the hazardous presentation of the tines. - As an alternative or in addition to the vehicle being driven rearwardly to effect pivotal movement of the forks from the position shown in Figure 3 to that shown in Figure 4, such 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 thetelescopic boom 6 in an extended condition and subsequently retracting the boom to provide the same effect as rearward movement of the vehicle. - From the aforegoing it will be appreciated that 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 thelatches 44 are biased to automatically engage with thefork 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.
Claims (15)
- A vehicle having a load handling assembly (7) which assembly comprises a pivotally mounted carriage (20); carriage control means (23) for pivotting the carriage (20) between a first condition in which the carriage (20) extends upwardly and a second condition in which the carriage (20) extends forwardly/rearwardly of the vehicle; load carrying means (30) pivotally mounted (33) on the carriage to be pivotal between an operative position in which, with the carriage (20) in its first condition, the load carrying means (30) extends forwardly of the carriage for load carrying purposes and a stored position in which the load carrying means (30) is accommodated unobtrusively on the vehicle, and wherein the assembly (7) is arranged so that pivotal displacement of the load carrying means (30) from its operative to its stored position can be accomplished by abutment of the load carrying means (30) with a ground surface (24) and controlled pivotal movement of the carriage (20) from its first condition to its second condition so that the load carrying means (30) is caused to be pivotted from its operative position to its stored position in which position it can be secured (44) relative to the carriage (20) and following which securing the carriage (20) can be pivotted to its first condition carrying with it the load carrying means (30) in its stored position.
- A vehicle as claimed in claim 1 and comprising releasable securing means (44) by which the load carrying means (30) can be temporarily secured relative to the carriage (20) in its stored position.
- A vehicle as claimed in claim 2 in which the releasable securing means (44) is located on the carriage (20).
- A vehicle as claimed in either claim 2 or claim 3 in which the releasable securing means (44) automatically engages between the load carrying means (30) and the carriage (20) as the load carrying means (30) is displaced into its said stored position.
- A vehicle as claimed in any one of claims 2 to 4 in which the releasable securing means (44) comprises a latch mechanism.
- A vehicle as claimed in any one of the preceding claims in which the pivotal mounting (33) of the load carrying means (30) is displaceable relative to the carriage (20) and second control means (27) is provided by which, when the carriage (20) is in its first condition, the load carrying means (30) can be raised or lowered relative to the carriage (20).
- A vehicle as claimed in claim 6 in which with the carriage (20) in its first condition, the second control means (27) is adjustable to displace the load carrying means (30) so that a load carrying part (32) thereof can be located at a level lower than that of the carriage (20).
- A vehicle as claimed in either claim 6 or claim 7 in which the second control means comprises a fluid pressure operated ram (27) which reacts between the carriage (20) and a relatively displaceable frame part (25) on which the load carrying means (30) is pivotted.
- A vehicle as claimed in any one of the preceding claims in which the carriage (20) is pivotally mounted (22) on a pivotally mounted boom (6) that is adjustable in elevation for raising and lowering the load handling assembly (7) and wherein the carriage control means (23) reacts between the boom (6) and the carriage (20).
- A vehicle as claimed in claim 9 in which the boom (6) is telescopic and the load handling assembly (7) is located at a front end of said boom.
- A vehicle as claimed in any one of the preceding claims in which the carriage control means comprises a fluid pressure operated ram (23).
- A vehicle as claimed in any one of the preceding claims in which with the carriage (20) in its first condition, the pivotal mounting (22) for the carriage is located at a bottom part thereof.
- A vehicle as claimed in any one of the preceding claims in which the load carrying means (30) has a substantially L-shape comprising a shank part (31) and the or a load carrying part (32), and wherein with the carriage (20) in its first condition and the load carrying means (30) in its operative condition, said load carrying part (32) extends forwardly of the vehicle for load carrying purposes and said shank part (31) extends upwardly and is pivotally mounted (33) at an upper end thereof to the carriage (20), and when the load carrying means (30) is in its stored position with the carriage (20) in its first condition, said shank part (31) extends upwardly and said load carrying part (32) extends rearwardly of the vehicle.
- A vehicle as claimed in any one of the preceding claims in which the load carrying means comprises forks (30) which, in their operative position and with the carriage (20) in its first condition, present tines (32) for load handling.
- A vehicle as claimed in any one of claims 1 to 13 in which the load carrying means comprises a platform which in its operative position and with the carriage in its first condition presents a surface for load carrying.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9105882 | 1991-03-20 | ||
GB9105882A GB2253831A (en) | 1991-03-20 | 1991-03-20 | Load handling vehicle |
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 (en) |
JP (1) | JPH05124798A (en) |
KR (1) | KR920017882A (en) |
FI (1) | FI915665A (en) |
GB (1) | GB2253831A (en) |
IE (1) | IE914571A1 (en) |
NO (1) | NO914866L (en) |
PT (1) | PT100105A (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2724374A1 (en) * | 1994-09-14 | 1996-03-15 | Manitou Bf | Fork lift truck designed to fit onto the back of a lorry |
EP0701963A1 (en) * | 1994-09-14 | 1996-03-20 | Manitou Bf | Motorised lift truck with telescopic arm |
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 (en) * | 2001-07-02 | 2003-01-08 | Thomas Sauer | Wheeled shovel loader |
FR2851238A1 (en) * | 2003-02-14 | 2004-08-20 | Lamy Les Constructeurs | Load handling device for vehicle, e.g. agricultural tractor, includes arm pivoted by angle on both sides of axis with respect to plate to move loader at preset distance on both sides |
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19816981A1 (en) * | 1998-04-17 | 1999-11-04 | Rudolf Kollmuss | System for lifting loads with at least one load carrier fitted pivotally at free end of crane jib |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2698698A (en) * | 1952-09-22 | 1955-01-04 | Kellog Co | Lifting attachment for industrial trucks |
DE1029290B (en) * | 1956-12-10 | 1958-04-30 | Irion & Vosseler | Device for gripping and stacking barrels |
FR2085472A1 (en) * | 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 (en) * | 1976-09-03 | 1978-03-09 | Loed Corp | Heavy duty fork lift truck - has forks mounted at end of arm pivoted on rear of chassis with offset cab and independently supported wheels |
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 |
-
1991
- 1991-03-20 GB GB9105882A patent/GB2253831A/en not_active Withdrawn
- 1991-11-21 EP EP91310750A patent/EP0504527A1/en not_active Withdrawn
- 1991-11-29 FI FI915665A patent/FI915665A/en not_active Application Discontinuation
- 1991-12-11 NO NO91914866A patent/NO914866L/en unknown
- 1991-12-30 IE IE457191A patent/IE914571A1/en unknown
-
1992
- 1992-02-07 PT PT100105A patent/PT100105A/en not_active Application Discontinuation
- 1992-03-16 KR KR1019920004243A patent/KR920017882A/en not_active Application Discontinuation
- 1992-03-18 JP JP4093635A patent/JPH05124798A/en active Pending
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2698698A (en) * | 1952-09-22 | 1955-01-04 | Kellog Co | Lifting attachment for industrial trucks |
DE1029290B (en) * | 1956-12-10 | 1958-04-30 | Irion & Vosseler | Device for gripping and stacking barrels |
FR2085472A1 (en) * | 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 (en) * | 1976-09-03 | 1978-03-09 | Loed Corp | Heavy duty fork lift truck - has forks mounted at end of arm pivoted on rear of chassis with offset cab and independently supported wheels |
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2724374A1 (en) * | 1994-09-14 | 1996-03-15 | Manitou Bf | Fork lift truck designed to fit onto the back of a lorry |
EP0701963A1 (en) * | 1994-09-14 | 1996-03-20 | Manitou Bf | Motorised lift truck with telescopic arm |
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 (en) * | 2001-07-02 | 2003-01-08 | Thomas Sauer | Wheeled shovel loader |
US7383906B2 (en) | 2002-08-29 | 2008-06-10 | Jlg Industries, Inc. | Rotatable and telescopic work machine |
FR2851238A1 (en) * | 2003-02-14 | 2004-08-20 | Lamy Les Constructeurs | Load handling device for vehicle, e.g. agricultural tractor, includes arm pivoted by angle on both sides of axis with respect to plate to move loader at preset distance on both sides |
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 |
---|---|
JPH05124798A (en) | 1993-05-21 |
IE914571A1 (en) | 1992-09-23 |
GB2253831A (en) | 1992-09-23 |
FI915665A0 (en) | 1991-11-29 |
FI915665A (en) | 1992-09-21 |
GB9105882D0 (en) | 1991-05-08 |
NO914866D0 (en) | 1991-12-11 |
KR920017882A (en) | 1992-10-21 |
NO914866L (en) | 1992-09-21 |
PT100105A (en) | 1994-03-31 |
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Legal Events
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