EP1577255A2 - Ladevorrichtung - Google Patents

Ladevorrichtung Download PDF

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Publication number
EP1577255A2
EP1577255A2 EP05101718A EP05101718A EP1577255A2 EP 1577255 A2 EP1577255 A2 EP 1577255A2 EP 05101718 A EP05101718 A EP 05101718A EP 05101718 A EP05101718 A EP 05101718A EP 1577255 A2 EP1577255 A2 EP 1577255A2
Authority
EP
European Patent Office
Prior art keywords
platform
ground
ground surface
support member
support structure
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Withdrawn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
EP05101718A
Other languages
English (en)
French (fr)
Other versions
EP1577255A3 (de
Inventor
Steven Cartwright
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.)
S Cartwright & Sons (coachbuilders) Ltd
Original Assignee
S Cartwright & Sons (coachbuilders) 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
Priority claimed from GB0404927A external-priority patent/GB0404927D0/en
Priority claimed from GB0420752A external-priority patent/GB0420752D0/en
Application filed by S Cartwright & Sons (coachbuilders) Ltd filed Critical S Cartwright & Sons (coachbuilders) Ltd
Publication of EP1577255A2 publication Critical patent/EP1577255A2/de
Publication of EP1577255A3 publication Critical patent/EP1577255A3/de
Withdrawn legal-status Critical Current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
    • B66F9/02—Stationary loaders or unloaders, e.g. for sacks
    • B66F9/04—Stationary loaders or unloaders, e.g. for sacks hydraulically actuated or controlled
    • 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
    • B66F9/07559—Stabilizing means
    • 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
    • B66F9/127—Working platforms
    • 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

Definitions

  • This invention relates to loading apparatus having a load-carrying platform which can be lifted and lowered on a support structure, and which has ground-engaging wheels.
  • Loading apparatus of this kind which is described for example in GB 2321050B and EP 1026118A, can be used to transfer loads into and out of load storage areas of load haulage vehicles and is particularly useful where direct loading/unloading between a vehicle floor and a fixed dock surface is not possible, or where loading/unloading between a ground surface and different levels within the vehicle is required.
  • ground-engaging wheels facilitates movement of the apparatus into a convenient loading position on a ground surface but during loading, action has to be taken to ensure that movement of the apparatus is prevented.
  • An object of the present invention is to provide wheeled loading apparatus which can be held securely against movement during loading without need to move wheels out of contact with the ground surface.
  • a wheeled loading apparatus comprising a support structure, a load-carrying platform mounted on the support structure so as to be movable upwardly and downwardly, and ground-engaging wheels on the support structure, characterised by the provision of at least one support member mounted on the support structure movable between positions at which it is respectively clear of the ground surface and in contact with the ground surface level with a ground-engaging periphery of at least one said ground-engaging wheel.
  • the (or each) member when in contact with the ground surface can stabilise the apparatus against undesired movement on the ground surface.
  • the member is level with the periphery of at least one wheel which remains in contact with the ground surface. There is therefore no requirement to move this w heel out of contact with the ground surface during loading.
  • the wheel can therefore contribute to support of the apparatus.
  • the arrangement is such that the (or each) member when in contact with the ground surface is level with all ground-engaging wheels whereby there is no requirement to move any w heel out of contact with the ground surface during loading, and all wheels can contribute to support of the apparatus.
  • the (or each) member may be in the form of a foot and in this case may contact the ground surface over a confined surface area, say of square or rectangular or other shape having a largest longitudinal dimension which is small compared with any overall longitudinal dimension of the support structure or platform.
  • the (or each) member may be in the form of an elongate beam which contacts the ground surface along its length, along a continuous surface, or at multiple spaced positions along its length.
  • the length of the member may be significant e.g. approaching, equal to or exceeding a longitudinal dimension of the support structure or platform.
  • the (or each) member is preferably such as to exert a locking or braking action on the ground surface in so far as it is non-movable relative to the support structure when it contacts the ground surface e.g. it is non-rotatable and held against movement back out of contact with the ground surface, and it is capable of frictionally engaging the ground surface to resist movement thereof along the surface whether as a consequence of the surface area in contact with the ground surface or the construction of the member where it contacts the ground surface.
  • the support structure has opposite sides thereto with respective said wheels thereat and there is at least one respective said support member at each said side.
  • the members are linked between the said sides by a transverse beam which may also be engageable with the ground surface.
  • the (or each) said support member is mounted at one end region of said support structure adjacent to one (or a respective) said wheel, and at least one further said wheel is mounted on the support structure spaced away from said one end region.
  • the (or each) further said wheel can be forced firmly into contact with the ground surface by the movement or pivotal force acting around the pivot point of the (or each) support member and its respective adjacent w heel. This can help to ensure that the apparatus is located in secure and stable disposition on the ground surface.
  • the (or each) support member is disposed centrally or substantially centrally of the respective said side of the support structure.
  • the (or each) support member may be movable between the said positions upwardly and downwardly relative to the support structure. This movement may be in a vertical direction. Other arrangements are however also possible. Movement may be at an angle to the vertical. Also movement may occur with the support structure e.g. by retraction of the wheels relative to the structure to bring the (or each) support member into engagement with the ground surface.
  • the support structure may conveniently comprise mutually spaced elongate first members extending in level disposition in a common direction, at least one transverse linking second member between the first members, and at least one upright guiding third member for guiding movement of the platform and the (or each) support member.
  • the first members extend in a common direction along the aforesaid sides.
  • each side Preferably there are two ground-engaging wheels at each side at spaced positions longitudinally of the side.
  • the wheels may be at the end regions of the sides.
  • the wheels may be mounted on the aforesaid first members.
  • the arrangement may be such that contact between the (or each) support member and the ground surface provides the entire braking action necessary to hold the apparatus securely in position on the ground surface.
  • At least one wheel may be mounted within a socket structure such that the wheel can be depressed into a locked or braked condition in the socket in which it engages a braking pad or the like.
  • At least one wheel may have a manual or power operated brake applied thereto, e.g. to move a braking pad into contact with the w heel periphery.
  • the (or each) support member may be movable by power and/or manual operation and a control for this may be provided on the apparatus and/or elsew here.
  • Power means for the platform and the (or each) support member may be associated and, conveniently, a common device, such as a ram, may be used both for movement of the (or each) support member and the platform whereby, for example, initial operation of the power means for the platform first brings the (or each) support member into contact with the ground surface and then subsequent operation effects movement of the platform.
  • a common device such as a ram
  • the platform may be arranged to move dow n to the ground surface so that a fork lift truck or other wheeled device can be conveniently driven to the platform on the ground surface.
  • the apparatus may be used for loading and unloading of a load haulage vehicle whereby the apparatus can be moved to a rear access opening of the vehicle and the platform may be movable between the ground surface, the floor of the load-carrying compartment of the vehicle, and upper positions of stacked loads or upper decks within the vehicle compartment.
  • the invention is not however restricted to this arrangement and the apparatus may be used for transfer of loads between vehicles and elevated loading-bay surfaces and/or for any other suitable purpose.
  • power may be derived from batteries on the apparatus and/or by connection to an electric or hydraulic or pneumatic power source on a vehicle or elsewhere.
  • the platform may comprise a solid deck structure or any other suitable structure.
  • the w heels may comprise individual rotatably mounted castors, or rollers or any other suitable structures.
  • Figure 1 shows loading apparatus used to transfer loads between a ground-surface 1 e.g. in a warehouse or loading bay, and the interior of a load-haulage wheeled road vehicle 2 having a load-supporting floor 3 on which loads can be stacked.
  • Loads are moved into and out of the vehicle 2 through a rear access opening 4 provided with doors (not shown).
  • the apparatus comprises a support structure having two common-length horizontal beams 5 which are fixed in parallel disposition by connection to two vertical open-sided box-section members 6 linked by two further horizontal box-section beams 7.
  • Each of the horizontal beams 5 is fixed at one end to a respective vertical member 6 adjacent a bottom end region thereof, at a common side of the apparatus.
  • the two further beams 7 are fixed one above the other at the bottom end regions of the vertical members 6 on the opposite sides thereof to the horizontal beams 5.
  • the horizontal beams 5 are fixed to the vertical members 6 slightly above the bottom peripheries of the vertical members 6.
  • the castors 8, 9 are mounted beneath each beam 5, respectively adjacent opposite ends thereof.
  • the castors 8, 9 have ground-engaging peripheries which are normally level with a position spaced below the bottom peripheries of the vertical members 6.
  • the (rear) caster 9 at the free end of each beam 5 away from the vertical member 6 has a swivel mounting; the other (front) castor 8 has a fixed mounting.
  • each vertical member 6 Between the upper end region of each vertical member 6 and the free end of the associated horizontal beam 5 there is fixed a rigid brace rod 10.
  • the structure defined by the two vertical members 6, the two horizontal beams 5, the two further horizontal beams 7, and the two brace rods 10 is a rigid self-supporting structure.
  • the vertical members 6 are open on those sides facing towards each other.
  • each member 6 there is mounted a hydraulic lift ram 11 which has inner and outer members 12, 13.
  • the inner member 12 has at its bottom end a foot 14 which comprises a solid body 15 with a rubber friction pad 16 attached to its lower surface.
  • the solid bodies 15 of the two feet 14 are linked by a rigid transverse beam 17 having a lower surface level with the lower surfaces of the bodies 15 and also having a rubber friction pad attached thereto.
  • the outer member 13 has at its bottom end a roller carriage 18 which runs inside the box-section member 6 between upper and lower stops 19, 20.
  • the foot 14 projects below the respective lower stop 20.
  • the two roller carriages 18 support a horizontal platform 21 comprising a frame structure 22 supporting horizontal planks 23. Forward and rearward edges have platform extensions 24, 25 pivotally mounted thereon so as to be movable between stowed upright positions and load-supporting horizontal (or slightly downwardly inclined) positions. These extensions 24, 25 actuate position sensors as they move between their stowed and load-supporting positions.
  • the platform framework 22 has mounted thereon a battery pack 26 and electrical controls 27 by means of which the two rams 11 are operated.
  • the rams 11 are linked for equalisation.
  • a manual spring loaded brake handle 28 is provided alongside each fixed castor 8.
  • the handle 28 is used to move a friction brake pad into and out of contact with the respective castor 8 and for safety is spring loaded to the braked position.
  • Each swivel castor 9 is mounted within a socket (not shown) into which the castor can be removably inserted to cause the castor 9 to be slightly retracted into a position in which it engages friction pads associated with the socket.
  • the apparatus so far described can be used for transferring loads between the vehicle load compartment and the ground surface 1 behind the vehicle.
  • the loading apparatus can be pushed on the ground surface 1 until the front side of the apparatus having the upright members 6 is close to the rear access opening 4 of the vehicle.
  • the feet 14 and the linking beam 17 are raised above the ground surface 1 with the carriages 18 on the stops 20 so that the peripheries of the castors 8, 9 contact and are free to rotate on the ground surface 1.
  • the apparatus With the apparatus in the desired position, the apparatus is then locked against further movement on the ground surface 1 by actuating the rams 18 to cause the inner members 12 to move downwardly.
  • the apparatus is supported on the ground surface 1, in a secure and stable manner, by the castors 8, 9, the feet 14 and the linking beam 17.
  • the weight of the apparatus, and of any load on the platform 21, acts to pivot the apparatus about the feet 14, the linking beam 17 and the front castors 8, to ensure that the rear castors 9 are firmly forced on to the ground surface 1.
  • the handles 28 may additionally be operated to brake the front castors 8, and also the rear castors 9 may be retracted into their sockets, as described above, using manual controls (not shown).
  • the platform In this position the platform is at its lowermost position slightly above the ground surface 1 with the carriages 18 engaging the stop 20, and the rear extension 25 can now be pivoted out into contact with the ground surface 1.
  • This facilitates movement of a fork lift truck on or off the platform 21.
  • the rear extension 25 When the platform 21 is loaded the rear extension 25 can be moved up to its protective stowed position and this actuates the sensor to allow further operation of the rams 11.
  • the platform 21 can now be moved upwardly so that it is level with the vehicle floor 3 or at a higher position level with an upper part of a load stack and/or an upper internal vehicle loading deck.
  • the carriages 18 engage the upper stop 19 to limit upward travel of the platform 21.
  • the forward extension 24 can now be pivoted out to facilitate movement of loads on or off the platform 21 into the vehicle. With the extensions 24 in this position its sensor is actuated to prevent further operation of the rams 11.
  • the rams 11 can be operated to move the platform 21 down to a lowermost position at which the carriages 18 engage the lower stop 20 and the inner members can be retracted to move the feet 14 and the linking beam 17 off the ground surface 1.
  • the castors 8, 9 can then be freed by operation of the handles 28 and by operation of controls to move the rear castors 9 out of their sockets.
  • the castors 8, 9 of the loading apparatus facilitate easy manoeuvrability on the ground surface, and, when desired, movement can be arrested and the apparatus can be held in a secure and stable manner using the castors 8, 9 to contribute to support of the apparatus.
  • the castors 8, 9 may be large wheels to facilitate movement and stability.
  • the loading apparatus of Figures 4-7 comprises a rectangular frame having three side members 110-112. Frame members 110, 111 are opposed to each other across the width of the frame, whilst the third member 112 forms an end member. The fourth side of the rectangle 113 is open. Each corner of the frame is supported by a respective, preferably castor mounted, w heel 114.
  • Each of the side frame members 110, 111 support a respective upright lift post or jack member 115, 116 which are connected at their upper ends by a bridge member 117.
  • each side frame member 110, 111 is a respective stabiliser foot 118 in the form of an elongate plank member, which can be raised clear of the ground as in Figure 4, or pressed firmly against the ground as in Figure 7 by means of jacks 119 ( Figure 7), and/or by the jacks 115, 116 in which case components 119 may also be jacks or alternatively may be guides.
  • the frame encloses a platform 120, which is carried by the jacks 115, 116 so as to be raisable and lowerable thereby, between a ground-contacting position (between the feet 118) as in Figure 6, and a raised position as in Figure 7.
  • the platform 120 may be provided with safety rails 121 along each side parallel to frame member 110, 111. Controls such as 122 are also provided on the frame for operation of the jacks.
  • the loading apparatus can be used as illustrated in Figures 6 and 7, for example furniture items 123 are loaded onto the platform 120 when the latter is at ground level, the platform raised to the floor or deck level of a van 124, and the furniture items then transferred into the van, without any substantial lifting.
  • the jacks may be pneumatically or hydraulically operated, or may be screw jacks operated by a lever.
  • a third foot 118 may be provided in association with the end frame member 112, for additional stability.
  • Figures 8 and 9 show a yet further embodiment. This is similar to the embodiment of Figures 4-7 and similar reference numerals are used for similar parts prefixed 200 instead of 100.
  • the apparatus of Figures 8 and 9 has a support structure with an open rectangular frame having opposite side members 210, 211 linked by an end member 212.
  • each side there is a centrally disposed upright further member 215, 216 enclosing a vertically acting double end ram.
  • These members 215, 216 are mounted on the side members 210, 211 and are linked at their top ends by a further transverse member 217.
  • a platform 220 with side rails or side walls 221 and a pivotal front end ramp 225 is mounted on the upright members 215, 216 so as to be movable upwardly and downwardly relative thereto by means of the rams.
  • the side members 210, 211 have castors 214 mounted at their ends and a respective support member 218 is located centrally beneath each side member 210, 211.
  • support members 218 are connected to the rams of the upright members 215, 216 and the arrangement is such that, with the platform 220 in a lowermost position, actuation of the rams first causes the support members 218 to be moved downwardly into contact with the ground surface. Further operation of the rams then causes the platform 220 to be lifted. This procedure is reversed with reverse operation of the rams.
  • the support members 218 are generally half the length of the side members 210, 211 and are shaped to provide a flat lower surface parallel to the ground surface and upwardly inclined upper surfaces.
  • the flat lower surfaces may have spaced pads for secure engagement with the ground surface.
  • Figures 10 and 11 show a yet further embodiment.
  • the apparatus of Figures 10 and 11 has a support structure with two horizontal parallel side members 310, 311 linked by two cross members 312. As shown the side members 310, 311 can be extended telescopically.
  • the side members 310, 311 have castors 314 at their ends.
  • An upright member 315 is fixed to one of the cross members 312. This has a vertically acting double ended jack and movably supports a walled platform 320.
  • a support member 318 is connected to the jack beneath the cross member 312.
  • the support member 318 is an elongate member essentially the same length as the cross member 312 with a flat lower surface parallel to the ground surface and an inclined upper surface.
  • initial operation of the jack moves the support member 318 downwardly into engagement with the ground surface. Further movement causes the platform 320 to be moved upwardly. The platform 320 can be moved down, and then the support member 318 is lifted by reverse operation of the jack.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Transportation (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Handcart (AREA)
  • Auxiliary Methods And Devices For Loading And Unloading (AREA)
EP05101718A 2004-03-05 2005-03-04 Ladevorrichtung Withdrawn EP1577255A3 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB0404927 2004-03-05
GB0404927A GB0404927D0 (en) 2004-03-05 2004-03-05 Loading apparatus
GB0420752A GB0420752D0 (en) 2004-09-18 2004-09-18 Improved loading apparatus
GB0420752 2004-09-18

Publications (2)

Publication Number Publication Date
EP1577255A2 true EP1577255A2 (de) 2005-09-21
EP1577255A3 EP1577255A3 (de) 2006-09-13

Family

ID=34466437

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05101718A Withdrawn EP1577255A3 (de) 2004-03-05 2005-03-04 Ladevorrichtung

Country Status (2)

Country Link
EP (1) EP1577255A3 (de)
GB (1) GB2411640B (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7168409B2 (ja) * 2018-10-16 2022-11-09 日本リフト株式会社 移動式リフト
JP7389988B2 (ja) * 2019-08-28 2023-12-01 日本リフト株式会社 移動式リフト

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE909560C (de) * 1951-02-16 1954-04-22 Loedige Alois Dipl Ing Fahrbares Verladegeraet
US2792079A (en) * 1955-01-12 1957-05-14 Raymond Corp Material handling apparatus
US3749201A (en) * 1972-02-02 1973-07-31 Autoquip Corp Ambulatory elevator with folding platform
WO1982001363A1 (en) * 1980-10-16 1982-04-29 David W Lutz Lift and carry truck
DE4417471A1 (de) * 1994-05-19 1995-11-23 Hagsfelder Werkstaetten Karlsr Aufstiegshilfe, insbesondere für körperlich Behinderte
ES2203350A1 (es) * 2003-11-26 2004-04-01 Oscar Méndez Argente Plataforma elevadora remolcable.

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1409906A (en) * 1920-07-14 1922-03-21 Boehck William Edward Portable elevator
GB886226A (en) * 1957-03-02 1962-01-03 Ver Westdeutsche Waggonfab Lifting and stacking truck
GB1084734A (en) * 1963-03-22 1967-09-27 Lancers Machinery Ltd Means for stabilising side loading fork lift trucks
GB2014540B (en) * 1978-01-28 1982-04-28 Unwin Ltd C N Apparatus for raising and lowering wheeled load
FR2733221B1 (fr) * 1995-04-18 1997-07-11 Beaudoin Jean Pierre Elevateur positionneur d'appareil
EP1457456B1 (de) * 2003-03-14 2007-02-14 Moffett Research and Development Limited Gabelstapler

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE909560C (de) * 1951-02-16 1954-04-22 Loedige Alois Dipl Ing Fahrbares Verladegeraet
US2792079A (en) * 1955-01-12 1957-05-14 Raymond Corp Material handling apparatus
US3749201A (en) * 1972-02-02 1973-07-31 Autoquip Corp Ambulatory elevator with folding platform
WO1982001363A1 (en) * 1980-10-16 1982-04-29 David W Lutz Lift and carry truck
DE4417471A1 (de) * 1994-05-19 1995-11-23 Hagsfelder Werkstaetten Karlsr Aufstiegshilfe, insbesondere für körperlich Behinderte
ES2203350A1 (es) * 2003-11-26 2004-04-01 Oscar Méndez Argente Plataforma elevadora remolcable.

Also Published As

Publication number Publication date
GB0504476D0 (en) 2005-04-13
GB2411640B (en) 2007-11-14
EP1577255A3 (de) 2006-09-13
GB2411640A (en) 2005-09-07

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