EP1586708A2 - Vorrichtung für die Verriegelung eines Werkzeugs an den Rahmen eines Laders, insbesondere eines landwirtschaftlichen Laders - Google Patents

Vorrichtung für die Verriegelung eines Werkzeugs an den Rahmen eines Laders, insbesondere eines landwirtschaftlichen Laders Download PDF

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Publication number
EP1586708A2
EP1586708A2 EP05364011A EP05364011A EP1586708A2 EP 1586708 A2 EP1586708 A2 EP 1586708A2 EP 05364011 A EP05364011 A EP 05364011A EP 05364011 A EP05364011 A EP 05364011A EP 1586708 A2 EP1586708 A2 EP 1586708A2
Authority
EP
European Patent Office
Prior art keywords
tool
standard
locking
rod
holder frame
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
EP05364011A
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English (en)
French (fr)
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EP1586708A3 (de
EP1586708B1 (de
Inventor
Loic Mailleux
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.)
Mailleux SA
Original Assignee
D'ETUDES ET D'INNOVATION DANS LE MATERIELAGRICOLE (SEIMA) Ste
D'ETUDES ET D'INNOVATION DANS LE MATERIEL AGRICOLE (SEIMA) Ste
INNOVATION DANS LE MATERIEL AG
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Filing date
Publication date
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Application filed by D'ETUDES ET D'INNOVATION DANS LE MATERIELAGRICOLE (SEIMA) Ste, D'ETUDES ET D'INNOVATION DANS LE MATERIEL AGRICOLE (SEIMA) Ste, INNOVATION DANS LE MATERIEL AG filed Critical D'ETUDES ET D'INNOVATION DANS LE MATERIELAGRICOLE (SEIMA) Ste
Publication of EP1586708A2 publication Critical patent/EP1586708A2/de
Publication of EP1586708A3 publication Critical patent/EP1586708A3/de
Application granted granted Critical
Publication of EP1586708B1 publication Critical patent/EP1586708B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/3604—Devices to connect tools to arms, booms or the like
    • E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
    • E02F3/3631—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat with a hook and a transversal locking element

Definitions

  • the present invention relates to mounting a tool on the frame toolholder fitted to a loader, in particular a front loader for agricultural use who is riding a tractor.
  • a loader is a hydraulically controlled handling device, designed to handle various materials on a farm, such as straw, hay, manure, land, fertilizer, cereals, beets, potatoes, silage, among others.
  • These tools are in particular skips, claws, grapples, blades, forks, pallet trucks, or combination tools, such as claws for example.
  • the tool holder attached to the end of the loader arms and the back face of the tool (facing towards the loader) have coupling means the design of which allows the quick change of the tool.
  • a difficulty faced by builders and their customers users is that there is no standardization in this area, so that a tool from a given manufacturer is not necessarily adaptable to a loader / tool carrier assembly from another manufacturer.
  • a first standard, marketed under the brand "MAILLEUX”, is characterized in that the tool holder frame comprises a pair of hands identical fastening of approximately “U” section, the opening of which is directed upwards, arranged coaxially and symmetrically both sides of the vertical and longitudinal median plane of the tool holder frame, while that the dorsal face of the tool is provided, at the top, with a pair of bars coaxial, thus dimensioned and positioned that each of them can fit and lodge inside a hanging hand.
  • Each bar is mounted between two fittings, one of which extends downwards, and has a locking hole and a notch.
  • the tool frame is equipped with a locking device comprising a pair of pins movable in translation, adapted to be inserted each in one of these orifices, and ensure the attachment of the tool on the tool holder frame.
  • the notch serves as a support zone for the lower part of the tool against stops the tool holder frame.
  • the locking device is controlled manually, using an operating lever, or hydraulically, by means of a cylinder, as described for example in the document FR 2 776 316.
  • a second standard, especially used on the German market, and commonly referred to as “DGS”, is characterized in that the tool carrier comprises a pair of coaxial catch bars arranged symmetrically with both sides of the vertical and longitudinal median plane of the tool holder frame, while that the dorsal surface is provided, in the upper part, with a pair of coaxial hooks, whose opening is directed downwards, thus dimensioned and positioned as each of them can engage on a bar of attachment, and imprison it.
  • the back of the tool has a pair of fittings having a locking hole, and a bearing area for its lower part.
  • the locking holes, and correlatively the pins that penetrate have different diameters; the diameter of these holes is 30 mm for the first standard and 20 mm for the second.
  • a third standard especially used on the Swedish market, and commonly referred to as "SMS" has a structure roughly similar to that of the second standard, the bars being carried by the tool holder frame, and the hooks by the tool.
  • each of the locking holes is not constituted by a bore drilled in a fitting, but by a grommet attached to the base of a flat shank whose upper part carries a hook.
  • each hook is therefore in the same vertical and longitudinal plane as a hole of lock, whereas according to the first two standards, the hooking means (bars or hooks) are offset laterally, outwards, with respect to fittings in which the locking holes are drilled.
  • brackets of the second and third standards both in inverted U shape, have different widths; correlatively, the bars latches have different diameters, with a value of 40 mm for the second standard, and 60 mm for the third.
  • the snap bars of the first standard have, for their part, a diameter having a value of 50 mm.
  • the present invention aims to solve these problems incompatibility by proposing a locking device capable of ensuring the locking, on the tool holder frame, a tool according to the first standard mentioned above, and at least one of the two others, this tool-holder frame being nonetheless relatively simple design, acceptable cost price, and convenient use.
  • the invention does not concern, on the other hand, the attachment means and support of the tool on the tool frame, this aspect of the question being treated in another patent application filed simultaneously and simultaneously by the Applicant.
  • This device comprises a first pair of pins of adapted to penetrate locking holes provided on integral fittings of a tool conforming to a given standard - said first standard -.
  • the invention comprises a second pair of locking pins adapted to penetrate locking holes, different diameter, provided on integral fittings of a tool according to at least another standard.
  • Figure 1 shows an agricultural tractor TA equipped with a CH loader of known type, comprising a BR stretcher whose lifting and lowering movements are provided by a hydraulic cylinder VL said lifting cylinder.
  • a tool holder frame 1 which is articulated at its base, its pivoting being provided by another hydraulic cylinder VB said tipping cylinder or digging cylinder.
  • a set of connecting rods BC ensures the connection between the rod of this jack VB and the tool holder frame 1.
  • This tool holder frame is provided in its upper part with hooking means M1, intended to cooperate with complementary means M2 provided on a tool 2, for example a bucket, to ensure their mutual attachment , conveniently, fast, and allowing easy change of tools.
  • the means M2 are fixed on the dorsal face of the tool 2; in addition, FE fittings located on the back of the tool 2 have OV locking holes through which the locking pins carried by the tool holder frame 1 can pass, so as to ensure the attachment of the tool to this door frame -tool.
  • the FE fittings have at their base a bearing zone ZA , for example in the form of a notch, able to bear against a crossbar BA extending transversely to the base of the frame 1.
  • This tool holder frame 1 has a generally symmetrical configuration relative to the median longitudinal vertical plane.
  • the two flanges are fixed by welding to the ends of a pair of high 10 and low 11 sleepers, which consist of rods cylindrical metal.
  • the tool holder frame is provided with a pair of fasteners M1 which, as indicated above, are not strictly part of the invention; they are located in the upper part of each of the flanges 3-4.
  • a locking device 8 which, in known manner, is adapted to ensure displacements in axial translation, along an axis referenced Z-Z ' , of two coaxial locking rods 80, this at means of a cylinder, hydraulic or pneumatic, centered on the axis Z-Z ' , and whose body and the piston carry the references 6 and 7 respectively.
  • these movements can be controlled mechanically, using a lever Maneuverable manually.
  • stirrup constituted by an angled plate shaped " L " returned, whose upper branch (horizontal) is welded to the flange 4, while its vertical branch 40 is fixed to the lower cross member 11.
  • the hydraulic cylinder is disposed between two fixed plates 41, located inside the vertical plates 40 of the aforementioned stirrup, parallel to the latter.
  • the device comprises a pair of identical cylindrical sleeves, or sleeves, referenced 5, also centered on the Z-Z ' axis, and mounted at each end of the cylinder 6-7.
  • the plates 40 are each pierced with a bore authorizing the free passage of a rod 80.
  • One of the sleeves 5 is integral with the cylinder body 6; the other is secured to the end of the piston rod 71.
  • Each of the plates 40 is also pierced with a circular opening, centered on the Z-Z ' axis , through which one of the locking rods 80 passes through. Their respective diameters are such that the locking rod 80 can slide freely through this opening, but not the sleeve 5, the outer end face bears against the inner face of the associated plate 40.
  • the cylinder 6-7 is mounted "floating" between the plates 41, which means that they are not immobilized in translation, the abutment of one of the elements 6 or 7 against a fixed part, during the extension of the lock, having effect of distributing the thrust force within the assembly so that the other element 7 or 6 in turn comes into abutment against a fixed part, as is known in itself.
  • each locking rod 80 extends axially towards the outside, by a cylindrical portion of smaller diameter 9, called "pin".
  • Figures 12 to 14 which represents one of the sleeves 5 (located on the right of FIG. 2, and integral with the piston rod 71), the latter is closed on the inner side by a bottom 53 and receives the rod 80 which can slide on a certain axial stroke; the wall of the sleeve has a pair of elongate openings, or lights, 50, extending longitudinally (according to a generatrix) and diametrically opposed.
  • the rod 80 is traversed, in its inner end zone, by a pin whose ends protruding 81 form sliding fingers engaging in these slots 50. This cooperation of the fingers 81 with the lights defines the travel stroke axial axis 80 relative to the sleeve 5.
  • An elastic member in this case a compression spring helical 52 interposed between the bottom 53 and the rod 80 constantly tends to push back the latter out of the sleeve 80, so that the fingers 81 abut against the outer edge of the lights 50.
  • Figure 3 shows the dorsal surface of a tool belonging to a first standard, the type marketed by the MAILLEUX company.
  • the coupling elements of this tool on the tool holder frame essentially comprise a pair of vertical fittings 20a which run from the upper part to the lower part of the dorsal face of the body, to which they are welded, as well as a pair of legs 20'A, each located vis-à-vis the upper part of each fitting, at a distance from it, outwardly.
  • each bracket 20A and the bracket 20'A associated is fixed a bar 21A of horizontal and transverse axis.
  • the two bars 21A equipping the tool are located symmetrically on either side of a median longitudinal vertical axis and are arranged coaxially, that is to say, in the extension of one another.
  • the fittings 20A In their lower part, the fittings 20A have an orifice of 22A lock and a notch 23A.
  • the orifices 22A are also coaxial, as are the notches.
  • the tool of Figure 4 which conforms to a second standard, in the occurrence the German standard designated "DGS" is also a 2B grab, of which the dorsal surface is provided with a pair of fittings 20B similar to those of the previously described tool 2A.
  • the fittings 20B are slightly closer to one of the other than the fittings 20A.
  • a hook 2 1 B On the outside, at the level of the upper part of each fitting, is fixed a hook 2 1 B whose active part has the general shape of a U-shaped beak turned, forming a semi-cylindrical cavity.
  • the 20B fittings are partly lower a locking hole 22 B.
  • these fittings have a flat edge 23B which acts as a bearing surface against the tool holder, as will be seen later.
  • the tool 2C shown in Figure 5 is a claw. This is a tool complies with a third standard in service on the Swedish market, designated "SMS”.
  • the fittings provided on the back of these tools are flat rods 20C vertical which are provided in the upper part of a hook 21 C having the shape a beak whose opening, semi-cylindrical, is turned downwards.
  • each fitting At the base of each fitting is provided a semi-cylindrical eyelet 22C. It has a transverse opening acting as a locking orifice.
  • the tool holder frame is provided with upper part of the attachment means, and in the lower part, support members ensuring this hanging and this implementation, regardless of the type of tool.
  • the locking means which are the subject of the present invention, described below, are adapted to cooperate effectively with locking of different diameters, value 30 mm for the tool according to first standard, or 20 mm for a tool complying with the second or third standard, this despite the difference in mutual spacing or distance between fittings in which these holes are drilled and their difference in thickness possible.
  • the operator who is on the agricultural tractor can freely manipulate the tool frame, tilting it more or less thanks to the tipping cylinder and lifting it more or less, thanks to the lifting jack, for engage it against the dorsal surface of the tool, and to hook the tool.
  • the locking holes 22 are each in axial alignment Z-Z 'of said rods 80.
  • the cylinder 6-7 is biased in the direction of its extension, so that the two sleeves 5 move outwards until they come into abutment against the plates 40, which corresponds to the maximum extension of the cylinder.
  • Rods 80 which are pushed out as far as possible under the action of the springs 52, accompany this movement without annoyance because there is no obstacle on their path.
  • the sleeves 5 and the rods 80 have lengths sufficient to allow this locking, the fittings in question having a distance between maximum.
  • the cylinder 6-7 is biased in the direction of its extension, so that the two sleeves 5 move outwards until they come into abutment against the plates 40, which corresponds to the maximum extension of the cylinder.
  • the nipples 9 engage in the orifices of locking of fittings 20B. Portions 30 of larger diameter can not penetrate, so that the connection area between the nipples and these portions comes wear against the edge of these holes, resting against the fittings.
  • FIGS. 10, 11, and 14 which relate to locking of a 2C tool belonging to the third standard, it can be seen that the operation is analogous to the previous one.
  • Rod 80 (movable, in the locking direction, from left to right in the figures) is integral at its end with a bar 83.
  • the latter is traversed by a bore which is engaged on the end portion of the rod 80, a pin 830 ensuring complete securing of the bar 83 with the rod 80.
  • the bar 83 extends perpendicular to the rod 80, substantially in a horizontal plane.
  • the locking device also comprises an articulated lever 87, which can pivot in its central portion about a vertical axis 88.
  • This axis is carried by a fixed part, that is to say, integral with the frame tool holder, not shown.
  • the lever 87 is integral with a sleeve 800.
  • a connecting rod 84 connects one end of the bar 83 with the other end of the lever 87.
  • the rod 84 is directly articulated, via an axis 86, on the lever 87.
  • This rod has a light 840 inside which engages a finger 85 integral with the bar 83.
  • the sleeve 800 has a diameter d 2 greater than the diameter d 1 of the rod 80.
  • the sleeve 800 is tubular; it has a central opening cylindrical 801 adapted to engage, with some play, on the end portion of the rod 80.
  • Reference t indicates the trajectory of the center of the sleeve 800 during this pivoting; it is a trajectory in an arc of a circle, tangent to the axis of the rod 80.
  • opening 801 inside the sleeve 800 is lined by an approximately conical, or tulip-shaped entrance surface 801 ', constituting a flared mouthpiece that allows this engagement at the end of the pivoting of the lever 87.
  • the diameters d 1 and d 2 correspond, with the engagement clearance, to the diameters D 1 and D 2 corresponding, respectively, to the diameters of the locking holes of the tools according to the second and third standards, on the one hand (20 mm ), and the first standard, on the other hand (30 mm).
  • the mutual spacing of the orifices 22C is slightly smaller than the mutual spacing of the orifices 22B, which itself is slightly smaller than the mutual spacing of the orifices 22A.
  • the locking device is thus positioned and dimensioned as the fittings 20B and 20C are positioned opposite the end portion rods 80, between the bar 83 and the sleeve 800 ( Figure 17).
  • fitting 20A and correspondingly its orifice of 22A lock, is positioned at the sleeve 800 ( Figure 18).
  • each fitting 20 to be placed between the end of a rod 80 and the associated sleeve 800, after which the locking ( Figure 17 or 18).
  • the invention also makes it possible, of course, to adapt to other possible existing or future tool standards, by appropriate choice of diameter and the length of each spindle, as well as their location (in position active).

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Earth Drilling (AREA)
  • Agricultural Machines (AREA)
  • Catching Or Destruction (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Automatic Tool Replacement In Machine Tools (AREA)
EP05364011A 2004-04-14 2005-03-01 Vorrichtung für die Verriegelung eines Werkzeugs an den Rahmen eines Laders, insbesondere eines landwirtschaftlichen Laders Not-in-force EP1586708B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0403912 2004-04-14
FR0403912A FR2869054B1 (fr) 2004-04-14 2004-04-14 Dispositif de verrouillage d'un outil sur le cadre porte-outil d'un chargeur, notamment a usage agricole.

Publications (3)

Publication Number Publication Date
EP1586708A2 true EP1586708A2 (de) 2005-10-19
EP1586708A3 EP1586708A3 (de) 2006-07-05
EP1586708B1 EP1586708B1 (de) 2008-07-23

Family

ID=34942741

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05364011A Not-in-force EP1586708B1 (de) 2004-04-14 2005-03-01 Vorrichtung für die Verriegelung eines Werkzeugs an den Rahmen eines Laders, insbesondere eines landwirtschaftlichen Laders

Country Status (4)

Country Link
EP (1) EP1586708B1 (de)
AT (1) ATE402295T1 (de)
DE (1) DE602005008301D1 (de)
FR (1) FR2869054B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8899906B2 (en) 2011-07-28 2014-12-02 Caterpillar Inc. Locking members for pallet fork
US8944218B2 (en) 2011-10-17 2015-02-03 Caterpillar Inc. Pallet fork
CN109853653A (zh) * 2018-12-11 2019-06-07 徐州徐工特种工程机械有限公司 一种属具快换装置

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2939453B1 (fr) * 2008-12-09 2019-04-05 Ateliers De Constructions Du Beaujolais Dispositif de connexion a un coupleur rapide et godet equipe de ce dispositif
DE102009046213B4 (de) 2009-10-30 2014-02-13 Wilhelm Stoll Maschinenfabrik Gmbh Wechselrahmen für einen Frontlader
FR3141113A1 (fr) 2022-10-24 2024-04-26 Manurob Machine de manutention autonome, installation équipée d’une telle machine et procédé de commande d’une telle machine
FR3141704A1 (fr) 2022-11-03 2024-05-10 Manurob Cadre porte-outil et machine de manutention équipée d’un tel cadre porte-outil

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3272264A (en) * 1964-03-31 1966-09-13 Henry S Antolini Earth-moving equipment
NL7117031A (de) * 1971-12-10 1973-06-13
GB2182834A (en) * 1985-11-19 1987-05-28 Alo Maskiner Ab Tractor-implement coupling
US5078569A (en) * 1990-04-30 1992-01-07 J. I. Case Company Quick attaching mechanism for a front-end loader
US5419673A (en) * 1993-03-11 1995-05-30 Memo Industrial Planning, Inc. Quick disconnect apparatus for tractor front loader
DE29716034U1 (de) * 1997-02-15 1998-03-26 Warthold, Jürgen, 59229 Ahlen Vorrichtung zur Ver- oder Entriegelung eines Werkzeugs an einem Werkzeug-Aufnahmerahmen von Kompaktladern
JP2000345576A (ja) * 1999-06-07 2000-12-12 Toyota Autom Loom Works Ltd 産業車輛
EP1362957A1 (de) * 2002-05-17 2003-11-19 Deere & Company Vorrichtung zum Verriegeln eines Werkzeugs an einem Hubwerk
EP1528163A1 (de) * 2003-10-30 2005-05-04 Deere & Company Werkzeugaufnahme

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3272264A (en) * 1964-03-31 1966-09-13 Henry S Antolini Earth-moving equipment
NL7117031A (de) * 1971-12-10 1973-06-13
GB2182834A (en) * 1985-11-19 1987-05-28 Alo Maskiner Ab Tractor-implement coupling
US5078569A (en) * 1990-04-30 1992-01-07 J. I. Case Company Quick attaching mechanism for a front-end loader
US5419673A (en) * 1993-03-11 1995-05-30 Memo Industrial Planning, Inc. Quick disconnect apparatus for tractor front loader
DE29716034U1 (de) * 1997-02-15 1998-03-26 Warthold, Jürgen, 59229 Ahlen Vorrichtung zur Ver- oder Entriegelung eines Werkzeugs an einem Werkzeug-Aufnahmerahmen von Kompaktladern
JP2000345576A (ja) * 1999-06-07 2000-12-12 Toyota Autom Loom Works Ltd 産業車輛
EP1362957A1 (de) * 2002-05-17 2003-11-19 Deere & Company Vorrichtung zum Verriegeln eines Werkzeugs an einem Hubwerk
EP1528163A1 (de) * 2003-10-30 2005-05-04 Deere & Company Werkzeugaufnahme

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 15, 6 avril 2001 (2001-04-06) -& JP 2000 345576 A (TOYOTA AUTOM LOOM WORKS LTD), 12 décembre 2000 (2000-12-12) *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8899906B2 (en) 2011-07-28 2014-12-02 Caterpillar Inc. Locking members for pallet fork
US8944218B2 (en) 2011-10-17 2015-02-03 Caterpillar Inc. Pallet fork
CN109853653A (zh) * 2018-12-11 2019-06-07 徐州徐工特种工程机械有限公司 一种属具快换装置
CN109853653B (zh) * 2018-12-11 2023-04-28 徐州徐工特种工程机械有限公司 一种属具快换装置

Also Published As

Publication number Publication date
ATE402295T1 (de) 2008-08-15
FR2869054B1 (fr) 2006-07-07
EP1586708A3 (de) 2006-07-05
EP1586708B1 (de) 2008-07-23
DE602005008301D1 (de) 2008-09-04
FR2869054A1 (fr) 2005-10-21

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