WO2021013430A1 - Automated fork system and method and automated guided vehicle having such fork system - Google Patents

Automated fork system and method and automated guided vehicle having such fork system Download PDF

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Publication number
WO2021013430A1
WO2021013430A1 PCT/EP2020/066176 EP2020066176W WO2021013430A1 WO 2021013430 A1 WO2021013430 A1 WO 2021013430A1 EP 2020066176 W EP2020066176 W EP 2020066176W WO 2021013430 A1 WO2021013430 A1 WO 2021013430A1
Authority
WO
WIPO (PCT)
Prior art keywords
fork
prongs
arms
pallet
prong
Prior art date
Application number
PCT/EP2020/066176
Other languages
French (fr)
Inventor
Patrizio Trecco
Original Assignee
Euroimpianti S.P.A.
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 Euroimpianti S.P.A. filed Critical Euroimpianti S.P.A.
Priority to PL20731114.3T priority Critical patent/PL4003898T3/en
Priority to EP20731114.3A priority patent/EP4003898B1/en
Priority to ES20731114T priority patent/ES2949810T3/en
Publication of WO2021013430A1 publication Critical patent/WO2021013430A1/en

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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
    • B66F9/12—Platforms; Forks; Other load supporting or gripping members
    • B66F9/18—Load gripping or retaining 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
    • B66F9/063—Automatically guided
    • 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
    • B66F9/0755—Position control; Position detectors

Definitions

  • the present invention relates to an automated fork system.
  • the present invention further relates to an automated guided vehicle having such a fork system.
  • the present invention relates to a method of lifting an object, such as a pallet .
  • a forks unit is known in the art, for transporting pallets by means of a fork-lift.
  • Object of the present invention is solving the above prior art problems by providing a system of automated forks, and its related method, which allow automatically working pallets having different sizes, from the smallest ones (e.g. sizes of 480 x 550 mm, height 500 mm, mass 375 kg) to the biggest ones (e.g. sizes of 2600 x 1200 mm, height
  • an automated guided vehicle comprising an automated fork system of the above type.
  • This automated guided vehicle can automatically lift an arbitrary pallet from a floor, and automatically move it to a desired position.
  • This method provides for efficient and easy lifting of a pallet, without the need of manual adjustment of the fork to different types of pallets.
  • Figure 1 shows a top perspective view of an embodiment of the automated fork system according to the present invention
  • Figure 1A shows a bottom perspective view of the automated fork system of Figure 1;
  • Figure 2 shows a perspective view of a fork arm and of the retractable prongs being connected
  • Figure 3 shows another perspective view of the fork arm
  • Figure 4 shows a perspective view of the retractable prong
  • Figure 5 shows a top view of the fork arm of Figure 2.
  • FIG. 6 shows an automated guided vehicle having an automated fork system.
  • a preferred, but absolutely not limiting, embodiment of the automated fork system 1 of the present invention is shown and described.
  • Such system is equipped with a fork-carrier plate 9 and has two parallel and extensible shaped arms 7.
  • the two parallel arms 7 can be moved in a lateral direction by means of, for example, hydraulic actuators arranged in the fork-carrier plate 9, to alter the horizontal distance between the two arms 7 in order to embrace pallet 8 having different widths, by engaging the recess available below the pallet 8 with a different size.
  • respective fork arms 3 are arranged under the respective arms 7.
  • the fork arms 3 can be moved along the arms 7, meaning the fork arms 3 can be moved away or towards the fork- carrier plate 9, to accommodate for long and short pallets 8.
  • the pallet 8 is typically loaded with a stack of packages or other items to be transported, although this is not illustrated in Fig. 1 for clarity of illustration.
  • FIG. 1A in which the pallet itself is not shown for clarity of illustration, shows the arms 7 and fork arms 3 having some of the prongs 5 extend out from the fork arms 3 and into such spaces of the pallet, while other prongs remain retracted, because their positions are in register with feet of the pallet.
  • each of the two fork arms 3 has quite a number of integral or independent retractable prongs 5:
  • Each fork arm 3 typically has five or more prongs 5, more preferably ten or more prongs 5, and most preferably from twelve to twenty prongs 5.
  • fifteen prongs 5 for each fork arm 3, drawn in their maximum extension position, are shown in this specific case.
  • Number, structural strength and extension stroke of the prongs 5, mutually equal or different, are variable and will be adapted to a specific coupling need with the types of pallets 8 to be lifted.
  • Each fork arm 3 contains electric, magnetic, pneumatic or hydraulic devices in order to perform the autonomous, simultaneous or coordinate movement of the prongs 5 by which the prongs 5 that are located in register with a space 11 extends into such a space 11, while prongs 5 that are in register with a foot 10 is stopped in its movement.
  • a number of prongs 5 will find a respective space 11 and extend into such space 11, and those prongs 5 will be the ones that enable the arms 7 to lift the pallet 8 from the ground.
  • the extension of the prongs 5 can be obtained, for example, by pneumatic actuators which could drive a single prong 5 or a group of prongs 5.
  • Suitable rollers 6 and sliding plates 12 ensure the desired stroke for the prong 5; for such purpose, every prong 5 is placed on a sliding plate 12 adapted to alternatively slide through rollers 6 with which it is equipped.
  • every prong 5 on the tip 5' can comprise a cutter, preferably a heated cutter, if the prong 5 itself has to open its way by penetrating a coating film which overhangs on the pallet 8 preventing the respective space 11 from being engaged.
  • the extension force of every single prong 5 is regulated to win frictions and penetrate possible plastic film coatings, without however damaging the pallet 8 should the prong stroke be prevented by the abutment on structural elements, such as a foot 10, of the pallet 8 itself.
  • the pneumatic actuator 4 may be provided with a pressure regulator 13, such that the prong 5 cannot push with a too high force if a foot 10 is in its way of movement.
  • Other types of sensors are also possible, such sensors using mechanical, hydraulic, pneumatic or optical sensing principles to detect if the prong 5 is extended against a foot 10, or another structural element of the pallet 8, and that therefore the further extension of the prong 5 should be stopped.
  • Electric, pneumatic, hydraulic, magnetic or optical sensors monitor the actual stroke of every single prong 5, so that an operator or the controlling computer can decide whether an enough and correctly distributed number of prongs 5 has embraced the pallet 8, by extending into spaces 11, on both fork arms 3 and therefore it is safe to proceed with a lifting of the pallet 8.
  • Lifting of the pallet 8 occurs after the due fork arms 3 have been closed to the width of the pallet 8 to be transported and after that the number and distribution of the engaged prongs 5, meaning prongs extending into spaces 11, has been judged enough for lifting the pallet 8 and any load placed thereon.
  • Each of the extensible shaped arms 7 can be equipped with standard assembling connections 2 on commercial fork-carrier plates, namely fork-carrier plates already present on the market to use standard lifting accessories, or can be directly assembled on a new and different fork-carrier plate suitably obtained for this exclusive use.
  • FIG. 6 illustrates an automated guided vehicle 14.
  • the automated guided vehicle or automatic guided vehicle is a portable robot that may be guided by, e.g., lines or wires on the floor, or by radio waves, vision cameras, magnets, laser etc. for navigation.
  • the automated guided vehicle 14 is provided with the automated fork system 1 described hereinabove.
  • the automated fork system 1 may be attached by means of the standard assembling connections 2.
  • the automated guided vehicle 14 can automatically pick up a pallet 8, wherein the prongs 5 of the fork arms 3 of the automated fork system 1 automatically can find and extend into spaces 11, and avoid damaging feet 10, such that the automated guided vehicle 14 can automatically and safely lift and then transport the pallet 8 from one location to another.
  • the invention further deals with a method for automatically lifting a pallet, this method comprising the steps of:

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)
  • Warehouses Or Storage Devices (AREA)

Abstract

An automated fork system (1) is described, 5comprising: at least two arms (7); at least one fork-carrier plate (9) connected to such extensible shaped arms (7); at least two fork arms (3) each connected to an arm (7); and a plurality of retractable prongs (5) connected to at least one fork arm (3). An automated guided vehicle equipped with such system (1) and a method for automatically lifting a pallet are also described.

Description

AUTOMATED FORK SYSTEM AND ME THOD AND AUTOMATED GUIDED VEHICLE HAVING SUCH FORK SYSTEM
The present invention relates to an automated fork system. The present invention further relates to an automated guided vehicle having such a fork system. Still further, the present invention relates to a method of lifting an object, such as a pallet .
A forks unit is known in the art, for transporting pallets by means of a fork-lift.
None of the known units, however, allows automatically working pallets having different sizes, without having to arrange every time forks with a suitable width, with obvious problems of tooling times and costs.
Object of the present invention is solving the above prior art problems by providing a system of automated forks, and its related method, which allow automatically working pallets having different sizes, from the smallest ones (e.g. sizes of 480 x 550 mm, height 500 mm, mass 375 kg) to the biggest ones (e.g. sizes of 2600 x 1200 mm, height
2400 mm, mass 1000 kg) .
The above and other objects and advantages of the invention, as will result from the following description, are obtained with an automated fork system as claimed in Claim 1. Preferred embodiments and non-trivial variations of the present invention are the subject matter of the dependent claims.
It is intended that all enclosed claims are an integral part of the present description.
According to a further aspect there is provided an automated guided vehicle comprising an automated fork system of the above type. This automated guided vehicle can automatically lift an arbitrary pallet from a floor, and automatically move it to a desired position.
Still further, there is also provided a method for lifting a pallet. This method provides for efficient and easy lifting of a pallet, without the need of manual adjustment of the fork to different types of pallets.
It will be immediately obvious that numerous variations and modifications (for example related to shape, sizes, arrangements and parts with equivalent functionality) can be made to what is described, without departing from the scope of the invention, as appears in the enclosed claims.
The present invention will be better described by some preferred embodiments thereof, provided as a non-limiting example, with reference to the enclosed drawings, in which:
Figure 1 shows a top perspective view of an embodiment of the automated fork system according to the present invention;
- Figure 1A shows a bottom perspective view of the automated fork system of Figure 1;
Figure 2 shows a perspective view of a fork arm and of the retractable prongs being connected;
Figure 3 shows another perspective view of the fork arm;
Figure 4 shows a perspective view of the retractable prong;
Figure 5 shows a top view of the fork arm of Figure 2; and
- Figure 6 shows an automated guided vehicle having an automated fork system.
With reference to the Figures, a preferred, but absolutely not limiting, embodiment of the automated fork system 1 of the present invention is shown and described. Such system is equipped with a fork-carrier plate 9 and has two parallel and extensible shaped arms 7. The two parallel arms 7 can be moved in a lateral direction by means of, for example, hydraulic actuators arranged in the fork-carrier plate 9, to alter the horizontal distance between the two arms 7 in order to embrace pallet 8 having different widths, by engaging the recess available below the pallet 8 with a different size. In addition, respective fork arms 3 are arranged under the respective arms 7. The fork arms 3 can be moved along the arms 7, meaning the fork arms 3 can be moved away or towards the fork- carrier plate 9, to accommodate for long and short pallets 8. It will be appreciated that the pallet 8 is typically loaded with a stack of packages or other items to be transported, although this is not illustrated in Fig. 1 for clarity of illustration.
The pallet 8, in fact, due to its arrangement, rests on the ground on feet 10 which leave opening spaces 11 as in Figure 1. The retractable prongs 5, described below, will be inserted inside such spaces 11. The feet 10 can be arranged on different positions, meaning the spaces 11 will also have different locations that cannot easily be predicted. Figure 1A, in which the pallet itself is not shown for clarity of illustration, shows the arms 7 and fork arms 3 having some of the prongs 5 extend out from the fork arms 3 and into such spaces of the pallet, while other prongs remain retracted, because their positions are in register with feet of the pallet.
As shown in Figures 2, 3 and 5, each of the two fork arms 3 has quite a number of integral or independent retractable prongs 5: Each fork arm 3 typically has five or more prongs 5, more preferably ten or more prongs 5, and most preferably from twelve to twenty prongs 5. In the Figures, fifteen prongs 5 for each fork arm 3, drawn in their maximum extension position, are shown in this specific case.
Number, structural strength and extension stroke of the prongs 5, mutually equal or different, are variable and will be adapted to a specific coupling need with the types of pallets 8 to be lifted.
Each fork arm 3 contains electric, magnetic, pneumatic or hydraulic devices in order to perform the autonomous, simultaneous or coordinate movement of the prongs 5 by which the prongs 5 that are located in register with a space 11 extends into such a space 11, while prongs 5 that are in register with a foot 10 is stopped in its movement. Hence, a number of prongs 5 will find a respective space 11 and extend into such space 11, and those prongs 5 will be the ones that enable the arms 7 to lift the pallet 8 from the ground.
The extension of the prongs 5 can be obtained, for example, by pneumatic actuators which could drive a single prong 5 or a group of prongs 5.
In Figure 4, every single prong 5 is driven by a single pneumatic actuator 4.
Suitable rollers 6 and sliding plates 12 ensure the desired stroke for the prong 5; for such purpose, every prong 5 is placed on a sliding plate 12 adapted to alternatively slide through rollers 6 with which it is equipped.
Moreover, every prong 5 on the tip 5' can comprise a cutter, preferably a heated cutter, if the prong 5 itself has to open its way by penetrating a coating film which overhangs on the pallet 8 preventing the respective space 11 from being engaged.
The extension force of every single prong 5 is regulated to win frictions and penetrate possible plastic film coatings, without however damaging the pallet 8 should the prong stroke be prevented by the abutment on structural elements, such as a foot 10, of the pallet 8 itself. For this purpose the pneumatic actuator 4 may be provided with a pressure regulator 13, such that the prong 5 cannot push with a too high force if a foot 10 is in its way of movement. Other types of sensors are also possible, such sensors using mechanical, hydraulic, pneumatic or optical sensing principles to detect if the prong 5 is extended against a foot 10, or another structural element of the pallet 8, and that therefore the further extension of the prong 5 should be stopped.
Electric, pneumatic, hydraulic, magnetic or optical sensors monitor the actual stroke of every single prong 5, so that an operator or the controlling computer can decide whether an enough and correctly distributed number of prongs 5 has embraced the pallet 8, by extending into spaces 11, on both fork arms 3 and therefore it is safe to proceed with a lifting of the pallet 8.
Lifting of the pallet 8 occurs after the due fork arms 3 have been closed to the width of the pallet 8 to be transported and after that the number and distribution of the engaged prongs 5, meaning prongs extending into spaces 11, has been judged enough for lifting the pallet 8 and any load placed thereon.
Each of the extensible shaped arms 7 can be equipped with standard assembling connections 2 on commercial fork-carrier plates, namely fork-carrier plates already present on the market to use standard lifting accessories, or can be directly assembled on a new and different fork-carrier plate suitably obtained for this exclusive use.
Figure 6 illustrates an automated guided vehicle 14. The automated guided vehicle or automatic guided vehicle (AGV) is a portable robot that may be guided by, e.g., lines or wires on the floor, or by radio waves, vision cameras, magnets, laser etc. for navigation. The automated guided vehicle 14 is provided with the automated fork system 1 described hereinabove. The automated fork system 1 may be attached by means of the standard assembling connections 2. By means of the automated fork system 1, the automated guided vehicle 14 can automatically pick up a pallet 8, wherein the prongs 5 of the fork arms 3 of the automated fork system 1 automatically can find and extend into spaces 11, and avoid damaging feet 10, such that the automated guided vehicle 14 can automatically and safely lift and then transport the pallet 8 from one location to another.
The invention further deals with a method for automatically lifting a pallet, this method comprising the steps of:
moving two arms 7 to embrace the pallet 8 between them,
activating at least one fork arm 3 arranged on at least one of the arms 7 to extend a plurality of prongs 5 in the direction of the pallet 8,
sensing which of said prongs 5 that are extending towards an obstacle 10 of the pallet 8 and stopping the extension of such prongs 5,
- inserting other prongs 5 into spaces 11 between obstacles 10 of the pallet 8, and
raising the arms 7 to lift the pallet 8 from a floor .

Claims

1. Automated fork system (1) comprising:
- at least two arms (7);
- at least one fork-carrier plate (9) connected to said arms (7);
- at least two fork arms (3), each connected to an arm ( 7 ) ;
- a plurality of retractable prongs (5) connected to at least one fork arm (3), characterized in that:
- the two arms (7) are designed to be moved in a lateral direction to alter the horizontal distance between the two arms (7) in order to embrace pallets (8) having different widths; and
- the two fork arms (3) are designed to be moved along the arms (7), away or towards the fork-carrier plate (9) to accommodate for long and short pallets (8) .
2. System (1) according to the previous claim, characterized in that each of the at least two fork arms (3) comprises a plurality of prongs (5), preferably each fork arm (3) contains electric, magnetic, pneumatic or hydraulic devices to perform an autonomous, simultaneous or coordinate movement of the prongs (5) .
3. System (1) according to claim 1 or 2, characterized in that an extension of said prongs (5) is obtained through pneumatic actuators (4) which drive a single prong (5) or a group of said prongs (5) .
4. System (1) according to claim 1, 2 or 3, characterized in that every prong (5) is placed on a sliding plate (12) and is adapted to slide through rollers (6) with which the sliding plate (12) is equipped.
5. System (1) according to any one of the previous claims, characterized in that at least some of said prongs (5) have on their respective tip
(5') a cutter, preferably a heated cutter, if the prong (5) has to open its way by penetrating a coating film which overhangs on the pallet (8) preventing a space (11) from being engaged by the prong (5) .
6. System (1) according to any one of the previous claims, characterized in that said prongs (5) are designed, when finding an obstacle (10), not to be further extended and to remain inside said fork arms (3)
7. System (1) according to claim 6, wherein at least some of said prongs (5) are provided with individual sensors arranged for sensing when said prong (5) is extended toward an obstacle (10), preferably said sensor of the prong (5) being arranged for distinguishing between impenetrable obstacles, such as feet (10) of a pallet (8), and penetrable obstacles, such as coating film of a pallet (8) .
8. System (1) according to any one of the previous claims, characterized in that it is further equipped with electric, pneumatic, hydraulic, magnetic or optical sensors which monitor the actual stroke of every single prong (5) .
9. System (1) according to any one of the previous claims, characterized in that the number of retractable prongs (5), integral or independent, is at least five for every fork arm (3), more preferably at least ten for every fork arm (3) , and most preferably from twelve to twenty for every fork arm (3) .
10. System (1) according to any one of the previous claims, characterized in that the system is a pallet lifting fork lift system (1) arranged for lifting pallets (8) of the type having feet (10) and spaces (11) between the feet (10) .
11. Automated guided vehicle, characterised in that it comprises an automated fork system (1) according to any of claims 1-10.
12. Method for automatically lifting a pallet, said method comprising the steps of:
- moving two arms (7) to embrace the pallet (8) between them,
activating at least one fork arm (3) arranged on at least one of the arms (7) to extend a plurality of prongs (5) in the direction of the pallet ( 8 ) ,
sensing which of said prongs (5) that are extending towards an obstacle (10) of the pallet
(8) and stopping the extension of such prongs (5) ,
inserting other prongs (5) into spaces (11) between obstacles (10) of said pallet (8), and raising said arms (7) to lift the pallet (8) from a floor.
PCT/EP2020/066176 2019-07-25 2020-06-11 Automated fork system and method and automated guided vehicle having such fork system WO2021013430A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PL20731114.3T PL4003898T3 (en) 2019-07-25 2020-06-11 Automated fork system and method and automated guided vehicle having such fork system
EP20731114.3A EP4003898B1 (en) 2019-07-25 2020-06-11 Automated fork system and method and automated guided vehicle having such fork system
ES20731114T ES2949810T3 (en) 2019-07-25 2020-06-11 Automated fork system and procedure and automatically guided vehicle provided with said fork system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP19425058.5 2019-07-25
EP19425058.5A EP3770106B1 (en) 2019-07-25 2019-07-25 Automated fork system and method and automated guided vehicle having such fork system

Publications (1)

Publication Number Publication Date
WO2021013430A1 true WO2021013430A1 (en) 2021-01-28

Family

ID=67874409

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2020/066176 WO2021013430A1 (en) 2019-07-25 2020-06-11 Automated fork system and method and automated guided vehicle having such fork system

Country Status (4)

Country Link
EP (2) EP3770106B1 (en)
ES (1) ES2949810T3 (en)
PL (1) PL4003898T3 (en)
WO (1) WO2021013430A1 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3930587A (en) * 1973-04-12 1976-01-06 Bliss George N Retractable chain lifting device
DE4234375A1 (en) * 1992-10-12 1994-04-14 Schoeller Transportautomation Protection system for person and against collision for driverless fork lift truck - has collision sensor arranged at front of at least two prong tips accepting load projecting over contour of load in travel direction
DE29620342U1 (en) * 1996-11-22 1998-03-19 Westfalia-WST-Systemtechnik GmbH & Co. KG, 33829 Borgholzhausen Satellite vehicle
US20140023462A1 (en) * 2010-12-09 2014-01-23 SSI Schafer NoeII GmbH Lager-und Systemtechnik Universal load-lifting means for the palettless handling of goods to be loaded onto paletts
JP2016094253A (en) * 2016-01-19 2016-05-26 昭和アルミニウム缶株式会社 Method of carving cut line
CN206985635U (en) * 2017-05-22 2018-02-09 珠海见卓思特科技有限公司 Fork truck

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4747610A (en) * 1987-08-20 1988-05-31 Barrett Industrial Trucks, Inc. Pallet sensor for lift truck
FR2721594A1 (en) * 1994-06-27 1995-12-29 Christian Blonde Pallet stacking bay with powered elevating frame
FR2773551B1 (en) * 1998-01-09 2000-03-24 Fleury Michon Logistique PALLET STORE, HANDLING TROLLEY FOR PALLETS EQUIPPED WITH SUCH A STORE AND METHOD FOR SUPPLYING PALLETS TO THE TROLLEY
GB201300652D0 (en) * 2013-01-15 2013-02-27 Eccleston Simon A pallet stacking apparatus

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3930587A (en) * 1973-04-12 1976-01-06 Bliss George N Retractable chain lifting device
DE4234375A1 (en) * 1992-10-12 1994-04-14 Schoeller Transportautomation Protection system for person and against collision for driverless fork lift truck - has collision sensor arranged at front of at least two prong tips accepting load projecting over contour of load in travel direction
DE29620342U1 (en) * 1996-11-22 1998-03-19 Westfalia-WST-Systemtechnik GmbH & Co. KG, 33829 Borgholzhausen Satellite vehicle
US20140023462A1 (en) * 2010-12-09 2014-01-23 SSI Schafer NoeII GmbH Lager-und Systemtechnik Universal load-lifting means for the palettless handling of goods to be loaded onto paletts
JP2016094253A (en) * 2016-01-19 2016-05-26 昭和アルミニウム缶株式会社 Method of carving cut line
CN206985635U (en) * 2017-05-22 2018-02-09 珠海见卓思特科技有限公司 Fork truck

Also Published As

Publication number Publication date
ES2949810T3 (en) 2023-10-03
EP4003898B1 (en) 2023-04-19
EP4003898A1 (en) 2022-06-01
EP3770106A1 (en) 2021-01-27
EP3770106B1 (en) 2024-07-31
PL4003898T3 (en) 2023-07-24

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