EP0072937B1 - Fork lift truck with inverting device - Google Patents

Fork lift truck with inverting device Download PDF

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Publication number
EP0072937B1
EP0072937B1 EP82106909A EP82106909A EP0072937B1 EP 0072937 B1 EP0072937 B1 EP 0072937B1 EP 82106909 A EP82106909 A EP 82106909A EP 82106909 A EP82106909 A EP 82106909A EP 0072937 B1 EP0072937 B1 EP 0072937B1
Authority
EP
European Patent Office
Prior art keywords
frame
forks
mast
lift truck
fork lift
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.)
Expired
Application number
EP82106909A
Other languages
German (de)
French (fr)
Other versions
EP0072937A1 (en
Inventor
Kooi Hessel
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.)
KOOI BV
Original Assignee
SELECTIEBEDRIJF KOOI BEHEER BV
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 SELECTIEBEDRIJF KOOI BEHEER BV filed Critical SELECTIEBEDRIJF KOOI BEHEER BV
Priority to AT82106909T priority Critical patent/ATE17700T1/en
Publication of EP0072937A1 publication Critical patent/EP0072937A1/en
Application granted granted Critical
Publication of EP0072937B1 publication Critical patent/EP0072937B1/en
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/07563—Fork-lift trucks adapted to be carried by transport vehicles
    • 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
    • B66F9/125—Platforms; Forks; Other load supporting or gripping members rotatable about a longitudinal axis
    • 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
    • B66F9/19—Additional means for facilitating unloading
    • B66F9/195—Additional means for facilitating unloading for pushing the load

Definitions

  • the invention relates to a device to be mounted to the mast of a fork lift truck comprising means for co-operating with guide means on the mast, means for turning the device through at least 180° with respect to the mast, a first vertical frame having protruding carrying forks and a second frame having protruding clamping forks, wherein the first frame is vertically movable with respect to the second frame, and a shifting device is adapted to move between the forks in the longitudinal direction of the forks.
  • This device is known from US-A-3 438 525.
  • Such a known device is mounted on the mast of the fork lift truck and serves to discharge a load transported on a pallet so that the pallet can be retained.
  • the load transported on a pallet is clamped by the vertical movement of the first frame between the forks of the first and the second frame, the whole device being then turned through 180° with respect to the mast, the clamp and the carrying fork being moved slightly away from one another, whilst finally with the aid of the shifting device the load is shifted from the clamping forks onto the deposition surface.
  • the pallet then remains on the carrying forks.
  • the known device is not adapted to be mounted on the fork lift truck transportable on a van. With this construction of the assembly the part protruding from the rear side of the van is too large so that the provisions of safety can no longer be satisfied.
  • the invention has for its object to render the known device suitable for mounting on a transportable fork lift truck.
  • an arm of the pivotal linkage is pivotally journalled in a beam of the first frame.
  • the movement of the first frame can be guided in the second frame. Since the second frame is rotatable with respect to the mast, the whole device is rotatable with respect to the mast.
  • a fork lift truck of known type On a van 1 (shown partly) can be deposited a fork lift truck of known type by slipping the carrying forks 3 into the appropriate beam 4 and by subsequently causing the frame of the fork lift truck to move upwards.
  • the device 5 embodying the invention can be mounted on this known, transportable fork lift truck.
  • the device 5 is mounted on the mast 6 of the transportable fork lift truck.
  • the device 5 embodying the invention comprises a first frame 9 of vertical and horizontal beams, from which protrude carrying forks 3.
  • the device 5 furthermore comprises a second, vertical frame 7, from which protrude the clamping forks formed in this case by a plate 10.
  • the first frame 9 can be vertically guided in the second frame 7.
  • the first frame is controlled by hydraulic means, for example, a plunger 12.
  • With the first frame is connected a shifting device 13 formed by a pivotal linkage comprising the arms 14 and 15.
  • the linkage is controlled, for example, by a hydraulic or pneumatic plunger 16.
  • the second frame 7 can be reversed, since it is adapted to rotate by a shaft 17 in a hub 18.
  • the movement of the frame and hence of the whole device is performed by the rolling movement of a driving gear wheel 19 on the inner toothing 20 of the shaft 17.
  • the device operates as follows: The carrying forks 3 of the first frame are slipped into a pallet 21, on which a load is deposited. Subsequently, with the aid of the plungers 12, the carrying forks 3 are lifted until the load rests on the clamping forks 10. Then with the aid of the reversing mechanism 17, 18, 19 and 20 the device embodying the invention is turned through 180° so that the position shown in Fig. 3 is obtained. Then the first frame is moved vertically upwards so that the load is set free of the pallet 21 and bears on the clamping forks 10. Then with the aid of the plunger 16 the shifting device 13 is actuated so that the load is slipped in the direction indicated in Fig.
  • the added length of the transportable fork lift truck 23 (see Fig. 4) is limited to about 240 mm.

Abstract

Device (5) for removing a load placed on a pallet (21) from a fork lift truck. The device (5) can be mounted on the mast (6) of an existing fork lift truck and is provided to this end with means for cooperating with the guide means along said mast (6) and means (17, 18, 19) for turning the device (5) through at least 180 DEG with respect to the mast (6). Apart from a frame (9) having protruding carrying forks (3) a second frame (7) having clamping forks (10) is provided. The two frames (9, 7) are relatively movable in order to clamp the load between the carrying forks (3) and the clamping forks (10). There is furthermore provided a shifting device (13) for shifting the load from the forks (10). The frame (9) for the carrying forks (3) and the shifting device (13) in the retracted position are located within the first frame (9) so that a very restricted length of the front structure is obtained.

Description

  • The invention relates to a device to be mounted to the mast of a fork lift truck comprising means for co-operating with guide means on the mast, means for turning the device through at least 180° with respect to the mast, a first vertical frame having protruding carrying forks and a second frame having protruding clamping forks, wherein the first frame is vertically movable with respect to the second frame, and a shifting device is adapted to move between the forks in the longitudinal direction of the forks. This device is known from US-A-3 438 525.
  • Such a known device is mounted on the mast of the fork lift truck and serves to discharge a load transported on a pallet so that the pallet can be retained. To this end the load transported on a pallet is clamped by the vertical movement of the first frame between the forks of the first and the second frame, the whole device being then turned through 180° with respect to the mast, the clamp and the carrying fork being moved slightly away from one another, whilst finally with the aid of the shifting device the load is shifted from the clamping forks onto the deposition surface. The pallet then remains on the carrying forks.
  • The known device is not adapted to be mounted on the fork lift truck transportable on a van. With this construction of the assembly the part protruding from the rear side of the van is too large so that the provisions of safety can no longer be satisfied. The invention has for its object to render the known device suitable for mounting on a transportable fork lift truck.
  • According to the invention this is achieved in that the second frame is arranged in the same vertical plane as the first frame and the shifting device is formed by a pivotal linkage which is also located in said vertical plane in the retracted position.
  • By the steps taken in accordance with the invention a very compact construction is obtained so that despite the presence of the device the extension of the part of the fork lift truck protruding from the rear side of the van can be drastically reduced, that is to say, in practice to about 240 mm.
  • In one embodiment an arm of the pivotal linkage is pivotally journalled in a beam of the first frame. The movement of the first frame can be guided in the second frame. Since the second frame is rotatable with respect to the mast, the whole device is rotatable with respect to the mast.
  • The invention will be described more fully with reference to the drawings.
  • The drawings show in:
    • Fig. 1 a schematic side elevation of a fork lift truck transportable on a van with a device embodying the invention.
    • Fig. 2 a perspective view of part of the device embodying the invention,
    • Fig. 3 a sectional view of the device embodying the invention with a shifting device partly slipped out and
    • Fig. 4 a sectional view of the device embodying the invention in the retracted position.
  • On a van 1 (shown partly) can be deposited a fork lift truck of known type by slipping the carrying forks 3 into the appropriate beam 4 and by subsequently causing the frame of the fork lift truck to move upwards. The device 5 embodying the invention can be mounted on this known, transportable fork lift truck.
  • The device 5 is mounted on the mast 6 of the transportable fork lift truck. The device 5 embodying the invention comprises a first frame 9 of vertical and horizontal beams, from which protrude carrying forks 3. The device 5 furthermore comprises a second, vertical frame 7, from which protrude the clamping forks formed in this case by a plate 10. By means of guide rollers 11 the first frame 9 can be vertically guided in the second frame 7. In its vertical movement the first frame is controlled by hydraulic means, for example, a plunger 12. With the first frame is connected a shifting device 13 formed by a pivotal linkage comprising the arms 14 and 15. The linkage is controlled, for example, by a hydraulic or pneumatic plunger 16. With respect to the mast the second frame 7 can be reversed, since it is adapted to rotate by a shaft 17 in a hub 18. The movement of the frame and hence of the whole device is performed by the rolling movement of a driving gear wheel 19 on the inner toothing 20 of the shaft 17.
  • The device operates as follows: The carrying forks 3 of the first frame are slipped into a pallet 21, on which a load is deposited. Subsequently, with the aid of the plungers 12, the carrying forks 3 are lifted until the load rests on the clamping forks 10. Then with the aid of the reversing mechanism 17, 18, 19 and 20 the device embodying the invention is turned through 180° so that the position shown in Fig. 3 is obtained. Then the first frame is moved vertically upwards so that the load is set free of the pallet 21 and bears on the clamping forks 10. Then with the aid of the plunger 16 the shifting device 13 is actuated so that the load is slipped in the direction indicated in Fig. 3 from the clamping forks 10 onto a deposition surface, for example, 22. Subsequently the device is again turned and the pallet can be deposited back on the van. Owing to the compact construction in accordance with the invention the added length of the transportable fork lift truck 23 (see Fig. 4) is limited to about 240 mm.

Claims (4)

1. A device (5) adapted to be mounted on the mast (6) of a fork lift truck comprising means for co-operating with the guide means on the mast (6), means (17, 18, 19) for turning the device (5) through at least 180° with respect to the mast (6), a first, vertical frame (9) having protruding carrying forks (3) and a second frame (7) having protruding clamping forks (10), wherein the first frame (9) is vertically movable with respect to the second frame (7), and a shifting device (13) is adapted to move between the forks (10) in the longitudinal direction of the forks (10), characterized in that the second frame (7) is located in the same vertical plane as the first frame (9) and the shifting device (13) is formed by a pivotal linkage (14, 15) which is also located in said vertical plane in the retracted position.
2. A device as claimed in claim 1 characterized in that one arm (14) of the pivotal linkage is pivotally journalled in a beam of the first frame (9).
3. A device as claimed in claims 1 and 2 characterized in that the first frame (9) is guided in the second frame (7).
4. A device as claimed in claims 1 to 3 characterized in that the second frame (7) is rotatable with respect to the mast.
EP82106909A 1981-08-14 1982-07-30 Fork lift truck with inverting device Expired EP0072937B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82106909T ATE17700T1 (en) 1981-08-14 1982-07-30 PALLET TRUCK WITH TURNING DEVICE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8103818A NL8103818A (en) 1981-08-14 1981-08-14 FORKLIFT WITH TURN.
NL8103818 1981-08-14

Publications (2)

Publication Number Publication Date
EP0072937A1 EP0072937A1 (en) 1983-03-02
EP0072937B1 true EP0072937B1 (en) 1986-01-29

Family

ID=19837930

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82106909A Expired EP0072937B1 (en) 1981-08-14 1982-07-30 Fork lift truck with inverting device

Country Status (4)

Country Link
EP (1) EP0072937B1 (en)
AT (1) ATE17700T1 (en)
DE (1) DE3268809D1 (en)
NL (1) NL8103818A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2709711B1 (en) * 1993-09-10 1995-11-24 Audureau Omfort System for attaching a forklift to at least four attachment elements, cradle for attachment and corresponding forklift.
FR2747381B1 (en) * 1996-04-12 1998-06-19 Pierre Marcelli DEVICE FOR TRANSFERING A LOAD BY PUSHING AND TRACTION IN THE SAME PLANE
DE29710971U1 (en) * 1997-06-24 1998-11-05 Autefa Maschinenfab Bale gripper for strapped bales

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2468326A (en) * 1945-03-29 1949-04-26 Thomas A Gleason Milk can inverting fork truck
CH444753A (en) * 1964-11-04 1967-09-30 Wagner Apparatebau Ernst Stacking device
US3438525A (en) * 1967-06-12 1969-04-15 Cascade Corp Apparatus and method for handling a load supported on a pallet
GB1582559A (en) * 1978-05-15 1981-01-14 Payne A Load transfer device
US4268210A (en) * 1979-03-19 1981-05-19 Ferguson Welding And Spring Fabrication, Inc. Pallet unloader for fork lifts

Also Published As

Publication number Publication date
EP0072937A1 (en) 1983-03-02
DE3268809D1 (en) 1986-03-13
ATE17700T1 (en) 1986-02-15
NL8103818A (en) 1983-03-01

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