EP3694805A1 - Système de préhension et de blocage pour un chariot élévateur à fourche et chariot élévateur à fourche associé - Google Patents

Système de préhension et de blocage pour un chariot élévateur à fourche et chariot élévateur à fourche associé

Info

Publication number
EP3694805A1
EP3694805A1 EP18812316.0A EP18812316A EP3694805A1 EP 3694805 A1 EP3694805 A1 EP 3694805A1 EP 18812316 A EP18812316 A EP 18812316A EP 3694805 A1 EP3694805 A1 EP 3694805A1
Authority
EP
European Patent Office
Prior art keywords
grip
cargo box
block
arrangement
blockage
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.)
Granted
Application number
EP18812316.0A
Other languages
German (de)
English (en)
Other versions
EP3694805B1 (fr
Inventor
Giampiero FINIZIO
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.)
Anty Srl
Original Assignee
Anty Srl
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 Anty Srl filed Critical Anty Srl
Publication of EP3694805A1 publication Critical patent/EP3694805A1/fr
Application granted granted Critical
Publication of EP3694805B1 publication Critical patent/EP3694805B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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

Definitions

  • the present invention concerns an improved cargo box grip and block arrangement for trucks of a type provided with forklif t means, an improved cargo box grip and block system and a forklift truck provided with such an arrangement and/or system.
  • cargo box grip and block arrangement and system has to be intended a cargo box grip and block arrangement and system adapted to be operated by a forklift truck.
  • Main application field of this invention is agricultural machinery.
  • lift trucks provided with forklift means being more easily called forklift trucks, are typically used for loading and unloading cargo boxes containing agricultural products, where cargo boxes are overturned to drop down produtcts in further cargo boxes or contaniners .
  • the invention can be applied to other fileds of technique, i.e. all those fields employing large sized cargo boxes containing goods and products with the same need of operation and overturning, which can be operated through forklift trucks.
  • the invention concerns a grip and block arrangement of a cargo box to be operated, in particular operating above a cargo box, being associated to grip and block means apt to set out a cargo box blockage by gripping and grabbing the cargo box.
  • the invention concerns a cargo box grip and block system of a type comprising grip and block means apt to carry out cargo box blockage by grabbing a cargo box from both above and below, said means not comprising any forks.
  • cargo boxes In the field of agricultural machinery cargo boxes, named as "bins”, being made of various materials to contain agricultural products, as plastic, iron and woods, are become more and more utilized and functional.
  • Such cargo boxes are very spacious and, overall, easily movable by means of forklift trucks, which are needed of related grip and block means apt to block the cargo box in order to operate, overturn and empty it.
  • Such trucks by forking from the botom of the cargo box through related means, are easily able to operate and load it, for example on a truck, for a subsequent moving to a destination.
  • Known cargo box grip and block systems employ, during cargo box grip and block operations being typically actuated by a so called “triple action" hydraulic piston arrangement commanding a cargo box grip and moving operation, inferior louvers apt to be located below the cargo box and acting in opposition to a top-down pushing upper pressure louver in order to block the cargo box with a proper pressure in an way completely indipendent from any forks operation.
  • Such inferior louvers sometimes shaped as short hook, sometimes tend to generate relevant local stresses inside cargo boxes structures, which can be damaged with their long time operation, so requiring a more frequent cargo boxes replacement, sometimes risking failures and crashing during their moving.
  • the present invention aims to solve the above mentioned prior art drawbacks and to indicate a grip and block arrangement for truck of a type provided with forklift means, a grip and block system for forklift truck and a related forklift truck assuring a superior reliability and efficiency to the forklift trucks during any cargo box moving and overturning operations.
  • a purpose of the present invention is that of reducing any risk of damaging a cargo box during the operation of gripping, moving and overturning it.
  • Another purpose is that of being able to employ, for trucks moving, operators not so much experienced and, at the same time, assuring safe and affective operations.
  • Another purpose is that of carrying out a cargo box grip and block arrangement and system of a substantially simple and largely reliable workmanship as of their operation.
  • the object of the present invention is a cargo box grip and block arrangement for forklift truck, a cargo box grip and block system for forklift truck and a respective forklift truck comprising said cargo box grip and block system according to the features of the enclosed claims.
  • the invention concerns a cargo box grip and block arrangement of a type comprising:
  • main body providing a bearing part, in particular substantially vertical developed, associated to grip and block actuating means of a forklift truck grip and block system apt to carry out a cargo box blockage by grabbing it,
  • - grip automatic actuating means operating on part of a lateral surface next to a cargo box upper edge when the upper edge comes to be closed to the bearing part, said grip automatic actuating means being associated to the main body to implement the gripping blockage on the upper edge and to avoid a cargo box longitudinal shift.
  • grip automatic actuating means can advantageously comprise intercepting and block rotating means associated to the main body to rotate a shaped element being located in such a way to be intercepted from the cargo box upper edge when the upper edge comes to be closed to the bearing part of said arrangement, the rotation setting out a barrage to the cargo box longitudinal shift and a related grip on the box with the arrangement passing, clearly in an automatic way, from an unblock to a blockage operative condition.
  • the grip and block arrangement implements in a simple and automatic way a cargo box blockage at the possible longitudinal shift, the used means being completely automatic operated and therefore being operatively highly reliable.
  • the present invention concerns cargo box grip and block system as per the preamble of claim 1.
  • Peculiarity of the grip and block system is that of comprising a forged foot, rigidly associated to the piston means second end, which comprises a forged plate being longitudinally cantilevered located with respect to the second end and adapted to distribute, when the system is in a blockage operative condition, the pressure on part of an outer inferior surface next to a cargo box inferior edge.
  • the forged plate has longitudinal symmetry and provides a central portion from which a couple of islands develops lateral to a longitudinal symmetry axis for an optimal stress distribution on a cargo box inferior surface.
  • the forged plate provides a cantilever longitudinal dimension greater of
  • the cargo box grip and block system because the cargo box grip and block arrangement automatically runs in a blockage position when a forklift truck operator forcks a cargo box, requires less precision during a forcking operation and therefore less accuracy W
  • An advantage is that of setting out a cargo box grip and block arrangement and system of easy implementaion and assembly, as well as cheap to be produced and of reduced maintenance.
  • An advantage is that of assuring the biggest steadiness and a uniform distribution of stress inside a cargo box structure to be operated by trucks, with a low risk to damage or crash a cargo box when they are full loaded.
  • FIG. 1 and 2 illustrate a perspective view, rispectively in an assembled and exploded condition, of a grip and block arrangement according to the invention, in particular in an unblock position of the arrangement;
  • FIG. 3 and 4 illustrate a perspective view of a grip and block system according to the invention lacking of a cargo box to be operated, rispectively in unblock and blockage operative condition;
  • FIG. 5 and 6 illustrate perspective views of the grip and block system according to the invention including the cargo box to be operated, in the operative conditions of rispectively figures 3 and 4;
  • figure 7 depicts a plan view from below of the system of figure 6;
  • FIG. 8 illustrates a plan view from below of a relevant detail of the system according to the invention
  • FIG. 9 represents perspective views, in two different operative conditions, of a forklift truck according to the invention.
  • main body 11 providing a bearing part llv thereof, in particular substantially vertical developed and rotated C-shaped, associated to grip and block actuating means of a forklift truck
  • FT grip and block system 20 apt to carry out a cargo box C blockage by grabbing the cargo box C
  • Forklif t truck FT grip and block system 20 is associated to an overturning arrangement apt to rotate the same system for overturning a cargo box C to be operated, which is not further detailed together with other elements of the same system 20 because they are known.
  • Such system 20 comprises a bearing frame 22 apt to be associated to said overturning arrangement for a cargo box C overturning, a cargo box C grip and block arrangement 10 associated to the frame 22 and grip and block actuating means being composed of:
  • a respective driving element for example an upper traverse 23, apt to be rigidly associated to the arrangement 10 main body 11, in particular to the extremal upper part of the bearing part 11 v thereof, the driving means being, for example, composed of a telescopic slide 24 on the top thereof, the upper traverse 23 being rigidly connected,
  • - pulling and pushing piston means 30 being associated, by a first end 31 thereof to the upper traverse 23, by a second end 32 thereof to the bearing frame 22, through interposition of controlled shifting means of an end 32 of said piston means 30 with respect to the bearing frame 22,
  • - leading and actuating means herein not represented and detailed because they are known, being associated to a forklift truck FT control and leading centre, apt to lead a piston means 30 elongation and/or shortening from an unblock operative position (figures 3 and 5) to a blockage operative position and vice-versa of the grip and block system 20.
  • said pulling and pushing piston means are composed, for example, of a hydraulically driven pulling and pushing piston 30 led by a forklift truck FT guide and control system of a known type; said controlled shifting means of a piston means 30 end 32 with respect to the bearing frame 22 are composed, for example, of a couple of substantially vertical developed slots 25, laterally machined on a front boss of the frame 22, inside that a pin 34 connected to the piston 30 second end 32 is inserted for a relative shifting in a driven direction following a defined path, in particular substantially vertical developing inside the slots 25.
  • Grip and block arrangement 10 comprises grip automatic actuating means, in particular esclusively mechanical operated, acting on part of the cargo box C lateral surface, in particular on the inner surface 52 thereof next to the upper edge 50 when it comes close to the same bearing part llv, said automatic means being associated to the main body 11 to assure grip and blockage of the upper edge 50 and so avoiding a cargo box C longitudinal shifting.
  • Grip automatic actuating means comprise intercepting and block rotating means associated to the main body 11 to rotate a shaped element 15 being located in such a way to be intercepted from the cargo box C upper edge 50 when the upper edge 50 comes to be close to the arrangement 10 bearing part llv, the rotation setting out a barrage to the cargo box C longitudinal shift and a related grip on the cargo box C while the arrangement 10 moves from an unblock operative condition (as in figures 3, 5) to a blockage one (as in figure 6).
  • said intercepting and block rotating means are composed, for example, of:
  • shaped element 15 in particular L-shaped, which is hinged to the main body 11 at the intersection of a respective intercepting flat section 16, which in an unblock operative condition of the arrangement 10 lies in a substantially vertical position apt to work as a barrage for the cargo box C upper edge 50 while moving forward to the bearing part llv, a barrage section 17 resting in a substantially horizontal position;
  • hinge means associated to the main body 11 and to an intersection of the shaped element 15 respective sections 16, 17 for the rotation thereof with respect to the main body 11, being for example composed of a pivot 18 passing inside circular holes 19 machined inside angle bars of the shaped element 15 and apt to engage inside circular shaped receptacles provided inside the main body 11, in particular an horizontal llh thereof, for the related rotaion of the element 15 with respect to the main body 11,
  • resilient means associated to said hinge means and shaped element 15 being apt to usually move the intercepting flat section 16 in a substantially vertical position when the arrangement 10 is in an unblock position, for example torsion springs 14 inserted between the pivot 18 and the horizontal part llh of the main body 11 and set out to usually mantain the section 16 in a substantially vertical position.
  • Grip and block arrangement 10 moves from an unblock position of figures 3 and 5 to a blockage one of figure 6 as soon as the cargo box C upper edge 50 comes to be close to the main body 11 bearing part llv, so getting in touch and pushing forward the shaped element 15 intercepting flat section 16, which rotates together with the barrage section 17 moving in vertical position while the arrangement 10 moves into a blockage operative position, so avoiding any possible cargo box C longitudinal shifting.
  • intercepting flat section 16 moves horizontally and is shaped in such a way to set out, by means of its surface and part of a main body 11 horizontal part llh lateral sections inferior surface, a one sole pressure surface advantageously forming a wide and coplanar pressure level 12 for a more balanced and therefore effective grab on the cargo box C upper edge 50.
  • Grip and block system 20 comprises a forged foot, indicated as a whole with 40, which is rigidly associated in a easily removable way to the piston means 30 second end 32 for operating by pushing on part of a cargo box C inferior outer surface 53.
  • Such forged foot 40 comprises, rigidly and in a easily removable way cantilevered to an inferior part of the second end 32, for example by bolting, a forged plate 42 apt to advantageously distribute, when the system 20 is in a blockage operative condition, the pressure on a wide part of the outer inferior surface 53 next to a cargo box C inferior edge 54, as in particular shown in figure 7. More in detail and with reference to figure 8, the forged plate 42 has a longitudinal symmetry and provides a central portion 43 from which a couple of islands 44 develop, in particular substantially rectangular in plant shaped, lateral to a longitudinal symmetry axis thereof for an optimal load distribution on the cargo box C inferior surface 53.
  • Said forged plate 42 provides a cantilever longitudinal dimension 1 greater of 0,1 times the forklift truck FT forks F longitudinal extension L and a width W greater of 0,2 times the breadth P in-between the forks F couple as typically used for operating a defined type of cargo box C.
  • the applicant has studied that by using such measurements proportions, the cargo box C structure inner stress results advantageously much better distributed with respect to the one of a known solution providing an inferior louvers grabbing on a cargo box inferior edge, so avoiding dangerous stress peaks on the inferior surface 53 next to the piston 30 second end 32 and advantageously removing any danger of cargo box structure deformation and possible crash when it is stressed by heavy loads during an overturning operation thereof.
  • a grip gasket 46 is applied, in particular providing a plant substantially corresponding to a forged plate 42 grip surface, for example substantially corresponding with a rectangular in plant shape of each of the island 44.
  • Such grip gasket 46 has advantageously a shape apt to evenly distribute on the cargo box C inferior surface 53 a gripping force as set out by the grip and block system 20 in a blockage operative condition thereof; hence its shape modifies according to each specific type of utilized cargo box C.
  • a grip gasket shape could be of a greater extension in lenght as well as in widht and/or rounded with respect to islands shape, or of a particular shape as the cargo box would provide housings specifically designed and fitted to grasp the same gaskets inside them.
  • a cargo box grip and block system and arrangement operation is described as follows, in particular when an operator of a forklift truck FT comes close to a cargo box C with a couple of turck FT forks F, activates an hydraulic command running on such system and arrangement until reaching a blockage operative position.
  • the arrangement 10 As soon as the forklift truck FT come forward to the cargo box C moving the main body 11 bearing part llv next to the upper edge 50 thereof, the arrangement 10, as previously described, automatically moves in a blockage operative position with the barrage section 17 in a vertical position, so preventing a possible cargo box C longitudinal shifting.
  • An operator can now activates a forklift system, the forks F thereof getting in touch with part of the cargo box C inferior surface 53 and then lifting the same.
  • the cargo box C grip and block system 20 is activated in a blockage position by means of a control system leading a piston means 30 shortening, which pulls together with it:
  • piston means 30 lenghten and move the driving means 24 so distancing rispectively the arrangement 10 and the forged plate 42 from the contact with the related part of the cargo box C, which now is not any more blocked and rests on the forks F.
  • such cargo box block and grip system is provided with an arrangement for adjusting the breadth P in-between the forks F, for example of a step-by-step breadth P adjusting type and composed, for example, of a segmented bar 26 attached to the frame 22 and provided with adjusting notches 27 wherein a couple of forks carriages 28 are attached, inside those a couple of forks F are inserted, typically the same genuine forks of the forklift truck FT.
  • a breadth in-between the forks adjusting arrangement could be of a breadth continous adjusting type, that is provided with hydraulic devices apt to allow a continous shifting of a couple of forks carriages to increase or decrease the breadth in-between the forks.
  • the system as so featured results of a particularly flexible use, by adapting itself to operate cargo boxes of a more various dimensions and constitutions.
  • the system 20 is provided with a forged foot 40 having a forged plate 42 of an extractable and replaceable type. So it is possible simply substituting the forged plate with another of a different shape and/or dimensions according to a cargo box type and/or dimensions and/or load type to be operated in order to minimize any stress inside a cargo box structure, for example through interposition of an automatic release mechanical arrangement or where the forged plate is simply bolted on the piston second end bottom.
  • Forks operation results indipendent from the cargo box grip and block system, which brings advantageously about a possibility of using the truck in an autonomous way from the same system; as well as it is possible to furnish the truck with customized elements of the cargo box grip and block system, as for example different types of forged feet.
  • the main body shaped element of the cargo box grip and block arrangement may be provided with a different embodiment to carry out a mechanical and exclusively mechanical operation so that the intercepting flat section moves in a substantially vertical position when it is not intercepted from a cargo box upper edge.
  • the intercepting flat section can be provided with an addball mass on the part thereof extremal to the rotation, so allowing natural rotation thereof in a vertical position without any need of resilient means.

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)

Abstract

La présente invention concerne un système de préhension et de blocage perfectionné pour un chariot élévateur à fourche, ainsi qu'un chariot élévateur à fourche fournissant un tel système de préhension et de blocage de caisse à marchandises. Le système de préhension et de blocage (C) d'une caisse à marchandises devant être actionnée par chariot élévateur à fourche (FT), est d'un type comprenant un châssis de support (22) apte à être associé à un dispositif de basculement pour faire basculer (C) la caisse à marchandises (C), un dispositif de préhension et de blocage (10) de caisse à marchandises (C) conçu pour la préhension du bord supérieur (50) d'une caisse à marchandises (C), des moyens d'actionnement de préhension et de blocage aptes à assurer le blocage d'une caisse à marchandises (C) par préhension de la caisse à marchandises (C), comprenant : des moyens d'entraînement (23, 24) associés à un châssis de support (22) pour déplacer un élément d'entraînement (23) de celui-ci apte à être solidaire d'un corps principal (11) de dispositif de préhension et de blocage (10), des moyens de traction et de poussée à piston (30) aptes à être entraînés en allongement et/ou en raccourcissement d'une position fonctionnelle de non-blocage (figures 3 et 5) à une position active de blocage et vice-versa dudit système de préhension et de blocage (20). Le système se caractérise en ce que lesdits moyens d'actionnement de préhension et de blocage (20) comprennent des moyens de traction et de poussée à piston (30) associés, par une première extrémité (31) de ceux-ci, à l'élément d'entraînement (23), par une seconde extrémité (32) de ceux-ci (32), à un moyen de décalage commandé (25,34) d'une extrémité (32) dudit moyen de piston (30) par rapport au châssis de support (22). De plus, le système (20) comprend un pied forgé (40) solidaire de la deuxième extrémité (32) des moyens à piston (30) et conçu pour entrer en contact avec une surface inférieure (53) d'une caisse à marchandises (50) lorsque le système (20) est dans une position fonctionnelle de blocage.
EP18812316.0A 2017-10-12 2018-10-11 Système de préhension et de blocage pour un chariot élévateur à fourche et chariot élévateur à fourche associé Active EP3694805B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT102017000115313A IT201700115313A1 (it) 2017-10-12 2017-10-12 Dispositivo bloccacassone perfezionato per carrello elevatore con mezzi sollevatori a forca e relativo carrello elevatore
PCT/IT2018/000128 WO2019073498A1 (fr) 2017-10-12 2018-10-11 Système de préhension et de blocage pour un chariot élévateur à fourche et chariot élévateur à fourche associé

Publications (2)

Publication Number Publication Date
EP3694805A1 true EP3694805A1 (fr) 2020-08-19
EP3694805B1 EP3694805B1 (fr) 2021-12-01

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP18812316.0A Active EP3694805B1 (fr) 2017-10-12 2018-10-11 Système de préhension et de blocage pour un chariot élévateur à fourche et chariot élévateur à fourche associé

Country Status (3)

Country Link
EP (1) EP3694805B1 (fr)
IT (1) IT201700115313A1 (fr)
WO (1) WO2019073498A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111017572B (zh) * 2019-08-07 2024-04-26 电子科技大学 一种垃圾箱转移翻倒车
CN113735023B (zh) * 2021-09-10 2022-12-27 南华大学 木料搬运机器人及木料搬运作业方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5132207Y2 (fr) * 1971-05-04 1976-08-11
JPH10167690A (ja) * 1996-12-10 1998-06-23 Toyota Autom Loom Works Ltd クランプ装置

Also Published As

Publication number Publication date
IT201700115313A1 (it) 2019-04-12
WO2019073498A1 (fr) 2019-04-18
EP3694805B1 (fr) 2021-12-01

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