EP2412876B1 - Agencement de chargeur frontal - Google Patents

Agencement de chargeur frontal Download PDF

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Publication number
EP2412876B1
EP2412876B1 EP11173966.0A EP11173966A EP2412876B1 EP 2412876 B1 EP2412876 B1 EP 2412876B1 EP 11173966 A EP11173966 A EP 11173966A EP 2412876 B1 EP2412876 B1 EP 2412876B1
Authority
EP
European Patent Office
Prior art keywords
locking
front loader
actuating element
actuating
der
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.)
Not-in-force
Application number
EP11173966.0A
Other languages
German (de)
English (en)
Other versions
EP2412876A2 (fr
EP2412876A3 (fr
Inventor
David Rohou
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.)
Deere and Co
Original Assignee
Deere and Co
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 Deere and Co filed Critical Deere and Co
Publication of EP2412876A2 publication Critical patent/EP2412876A2/fr
Publication of EP2412876A3 publication Critical patent/EP2412876A3/fr
Application granted granted Critical
Publication of EP2412876B1 publication Critical patent/EP2412876B1/fr
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
    • E02F3/627—Devices to connect beams or arms to tractors or similar self-propelled machines, e.g. drives therefor
    • 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
    • E02F3/3645—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat with auto-engagement means for automatic snap-on of the tool coupler part
    • 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
    • E02F3/627—Devices to connect beams or arms to tractors or similar self-propelled machines, e.g. drives therefor
    • E02F3/6276—Devices to connect beams or arms to tractors or similar self-propelled machines, e.g. drives therefor on one side of the frame

Definitions

  • the invention relates to a front loader assembly for an agricultural vehicle with a console and a mast assembly for attaching a front loader to the console, wherein the mast assembly comprises a support for placing on a bearing of the console and a displaceably arranged locking element which displaceable from an unlocked position into a locking position in which the locking element extends through at least one first opening formed on the mast arrangement and through at least one second opening which can be brought into alignment with the first opening and formed on the bracket.
  • the locking element is connected via a connecting element with an actuating element offset parallel to the locking element, the actuating element being actuatable by a foreign force and the locking element being displaceable from the unlocking position into the locking position by means of the connecting element and by actuating the actuating element, and wherein a locking device is included, with which the actuating element can be locked in the unlocked position.
  • Front loader arrangements ie the arrangement of a front loader on a vehicle, in particular on an agricultural vehicle, or also on another type of commercial vehicle, are known.
  • front loaders can be connected or attached to a vehicle, for example a tractor or an agricultural tractor, by means of a mounting frame or console in order to carry out loading work.
  • the attachment frame or the console is usually screwed to the vehicle frame or is attached to this.
  • the front loader itself has a connection or attachment point or Mast arrangement that is connected to the console or attached or articulated.
  • various possibilities are known.
  • some known embodiments of front loader arrangements have mechanisms which provide two hooks formed on the console which serve to receive two bearing pins formed on the mast assembly of the front loader, at least one of the catch hooks being locked after receiving the bearing pins.
  • the recording of the bearing pin is done by bringing the console or approaching the vehicle to the mast assembly or to the front loader, which is located in the corresponding parking position or mounting position. After receiving the bearing pin locking the catch hooks can be done manually or semi-automatic or fully automated or foreign motor or remote controlled.
  • Other mechanisms provide that the console has only one catch hook, which serves to receive a formed on the mast assembly bearing pin.
  • connection opening is further formed on each bracket and mast assembly, which, brought into alignment with each other, are connected to each other via a locking bolt and through which a locking bolt is guided.
  • the lock can be done manually or semi-automatically or fully automated or foreign motor or remote controlled.
  • Such a partially automated locking discloses the US 2007 / 0059147A1 in which a front loader assembly is presented, which comprises a spring-biased locking bolt which is actuated by trained on a mast assembly and a console actuators by the actuators by relative movement to trigger a lock, such that the locking bolt by spring force in the mast assembly and guided on the console of the front loader assembly connecting openings becomes.
  • a front loader assembly which comprises a spring-biased locking bolt which is actuated by trained on a mast assembly and a console actuators by the actuators by relative movement to trigger a lock, such that the locking bolt by spring force in the mast assembly and guided on the console of the front loader assembly connecting openings becomes.
  • To unlock the locking bolt against the spring force has to be led out manually from the connection openings and the adjusting elements are brought into a corresponding unlocked position.
  • the disadvantage here is that in particular the design and arrangement of the control element formed on the mast arrangement, as well as its connection with the locking bolt require a relatively complex manufacturing and assembly
  • the JP 2004 316 168 A discloses a front loader assembly for an agricultural vehicle having a console and a mast assembly for attaching a front loader to the console. It is provided a displaceably arranged locking system with an operable by a foreign force actuator, which can be done by which a locking of the mast assembly and the console. A lock can only be initiated manually here.
  • the object underlying the invention is seen to provide a front loader arrangement of the type mentioned, by which the aforementioned disadvantages are overcome.
  • a front loader arrangement of the type mentioned above is formed such that the locking device comprises a locking lever mounted on the mast assembly, which is urged by a second spring into a locking position, in which the locking lever in the unlocked position with a trained on the actuating element paragraph can be brought into engagement , where the Locking lever has an actuating surface which is engageable with the console in such a way that the locking lever is moved against a force of the spring out of the locking position out.
  • a likewise uncomplicated and easily executable connecting element allows the indirect actuation of the locking element by an external force, for example by a spring force or by a connected hydraulic, pneumatic, electrical or mechanical actuator, wherein the locking element is carried on pressing or moving or moving the actuating element via the connecting element.
  • the external force acting on the actuating element can thus be transmitted to the locking element and act on the latter.
  • the geometric dimensions of the actuator can be made arbitrary, so that here is a simpler and more compact design favors, since it is not directly related to the actuation required actuating elements or actuators to the relatively large dimensions of a locking element.
  • the front loader assembly comprises a locking device with which the actuating element can be locked in the unlocked position.
  • the actuating element In the unlocked position, the actuating element is biased or acted upon by the above-mentioned force for actuation such that it is moved into the locking position as soon as the lock is released.
  • the locking is on the other hand made automatically when the actuator from the Locking position is spent in the unlocked position.
  • the locking device may comprise a locking lever mounted on the mast arrangement, which is urged or biased by a further or second spring in a locking position, in which the locking lever in the unlocked position with a formed on the actuating element paragraph can be brought into engagement.
  • the locking lever in this case has an actuating surface which can be brought into engagement with the console such that the locking lever is moved against the spring force of the second spring out of the locking position.
  • the locking lever is arranged such that when connecting the front loader or the mast assembly to the vehicle or to the console of the locking lever is actuated by contact with the console or with a part connected thereto, so that the lock is automatically released.
  • the locking lever may be formed as a rocker arm or rocker arm or pendulum lever, wherein it is connected at one end of the lever with the spring and engageable at the other end of the lever with the console.
  • the actuating element and the locking element are displaceably mounted or guided on the mast arrangement, wherein the locking element when moving the actuating element together with the actuating element, guided in parallel, is moved.
  • the mast assembly is formed by two opposing mirror-image plates, which are interconnected via one or more webs. Said displaceable mounting of the actuating bolt can take place, for example, via recesses formed on both metal sheets through which the actuating element can extend or in which it is guided.
  • the usually robust design of a locking element on a front loader also allows a correspondingly robust storage or management of the Locking element which can accommodate relatively large bearing forces. Accordingly, the guide or bearing of the actuating element can be relatively simple and uncomplicated, since the majority of the forces acting on the actuator forces is absorbed by the rigid connection between the locking, connecting, and actuating element of the locking element formed for the guide or storage.
  • the actuating element can be connected to an actuator, which is hydraulically, electrically, pneumatically or electromechanically adjustable and exerts a force on the actuating element.
  • actuators for example, hydraulic cylinders, pneumatic cylinders, stepper motors, spindle motors or other types of electric motors can be used.
  • the spring for actuating the actuating element may be formed, for example, as a helical spring, wherein conical springs or truncated cones or barrel springs may be used here. These can be designed as tension or compression springs.
  • the actuating element and the locking element are designed as round bolts, which may be formed solid or hollow as a pipe or pipe profile. Unlike the locking element, the actuating element may also have a rectangular cross-section, since it does not have to perform a rotational movement about its longitudinal axis, but only one translational movement or displacement (it is arranged so as to be displaceable in both the transverse, ie radial and longitudinal directions, but not rotatable about its longitudinal axis).
  • the locking element can undergo a rotational movement (about its longitudinal axis) as well as a translatory movement (in the direction of its longitudinal axis).
  • the actuating element is mounted displaceably in guide openings formed on the mast arrangement such that in an unlocking position the locking lever can be brought into engagement with its actuating surface with the console in engagement with the shoulder on the actuating element. That is, when the lock lever is engaged with the bracket and the spring is in the cocked condition for biasing the lock lever, the actuator may translate in the direction of the lock lever. be moved in the transverse direction to its longitudinal axis, so that the actuating element is moved in the direction of the locking lever and the locking lever with the shoulder on the actuating lever is engageable.
  • the locking element performs the above-mentioned rotational movement, so that when translational displacement of the actuating element by the rigid connection between the locking and actuating element, the first set in a rotational movement and the latter is moved on a circular path around the locking element.
  • FIG. 1 is a loader in the form of an agricultural tractor shown.
  • the tractor 10 has an attached front loader assembly 12.
  • the front loader assembly 12 includes a front loader 13 and a frame assembly or console 16 attached to a vehicle frame 14 of the tractor 12.
  • the front loader 13 includes a mast assembly 18 by which the front loader 13 attaches to the console 16 of the front loader assembly 12 is attached to the tractor 10.
  • the front loader assembly 12 and the front loader 13 further includes a front loader rocker 20 pivotally mounted to the mast assembly 18, to which a pivotable front loader tool 22 connects.
  • the front loader tool 22 is designed, for example, in the form of a loading shovel, wherein the front loader tool 22 could also be designed as a loading fork, gripper, etc.
  • the front loader swing 20 is over a hydraulic lift cylinder 24 extending between the mast assembly 18 and the front loader rocker 20, pivotable. Between a connected to the front loader arm 20 link 25 and the mast assembly 18, a steering linkage 26, which serves for parallel guidance of the front loader tool 22 extends.
  • the front loader tool 22 is pivotable about a connected to the front loader rocker 20 and the front loader tool 22 pivot linkage 27, as well as a connected to the pivot link 27 and the handlebar 25 hydraulic swing cylinder 28.
  • FIGS. 2 and 2 The mast assembly 18 and the console 16 of the front loader assembly 12 is shown enlarged in a perspective side view and in a perspective cross-sectional view.
  • the bracket 16 is formed as a solid frame plate 30 and has a receiving area 32 for receiving or coupling the mast assembly 18, and a mounting portion 34 for attaching the bracket 16 to the vehicle frame 14.
  • the console 16 is screwed via screw (not shown) to the vehicle frame 14.
  • the bracket 16 has at a lower portion of the receiving portion 32 a hook-shaped bearing 36 and at an upper portion of the receiving portion 34 has an opening 38 in the form of a bearing bore.
  • the mast assembly 18 has a front side panel 40 and a mirror-inverted opposite rear side panel 42. Between the side plates 40, 42 extends a double-angle arranged frame plate 44, which serves as a reinforcement and support structure. About the frame plate 44th Both side plates 40, 42 are arranged parallel to each other.
  • the side plates each have an upper bearing 46, 46 ', a central bearing 48, 48' and a lower bearing 50, 50 ', wherein the upper bearing points 46, 46', the steering linkage 26, to the central bearings 48, 48 ' the front loader rocker 20 and to the lower bearings 50, 50 'of the lifting cylinder 24 are pivotally articulated.
  • the side plates 40, 42 in a central region in each case an opening 52, 52 'in the form of a bore, with which the mast assembly 18 is lockable to the opening 38 of the bracket 16, as will be described in detail below.
  • a support 53 in the form of a bearing pin, which serves to support the mast assembly 18 on the mounting portion 32 of the console 16 formed bearing 36.
  • a locking element 54 is arranged in the form of a connecting bolt which is displaceable in the direction of its longitudinal axis in the openings 52, 52' storable.
  • the locking element 54 is rigidly connected via a connecting element 56 in the form of a flat profile or flat steel with an actuating element 58 in the form of a bolt or a round steel or a rod.
  • the actuating element 58 is arranged with its longitudinal axis parallel to the locking element 54.
  • a locking device 59 is provided which comprises a parallel to the side plates 40, 42 extending and fixed to the frame plate 44 guide plate or retaining plate 60.
  • the locking device 59 between the retaining plate 60 and the front side plate 40, a pivotally mounted on a bearing pin 62 locking lever 64, wherein the bearing pin 62 is arranged approximately centrally with respect to the locking lever 64.
  • the locking lever 64 is on a first end 66 is connected via a spring 68 with a retaining plate 70, wherein the retaining plate 70 is attached in the form of an angle to the front side wall 40.
  • the locking lever 64 has an actuating surface 74 at its second end 72.
  • a guide opening 76 is formed on the holding plate 60, through which a free end 78 of the actuating element 58 is guided.
  • the actuating element also extends through corresponding passage openings 77, 77 'on the side plates 40, 42, which are designed such that an unimpeded movement of the actuating element 58 is made possible.
  • the other end of the actuating element is rigidly connected to the connecting element 56, preferably welded or screwed.
  • a threaded bolt 80 is provided with a bolt head 82.
  • a spring 84 is tensioned, wherein the spring 84 is formed as a conical or frusto-conical compression spring.
  • a shoulder 86 is formed in the context of the locking device 59, which can be brought into engagement with a recess 88 formed on the first end 66 of the locking lever 64.
  • the guide opening 76 is formed as a slot, the slot having an upper portion 90 having a first diameter and a lower portion 92 having a smaller second diameter, wherein the first diameter is approximately the normal cross-sectional dimension of the actuator 58 and the second diameter is approximately Cross-sectional dimension of the actuating element 58 corresponds to the shoulder 86, so that in the lower region 92 by the smaller second diameter, a guide of the actuating element 58 at its shoulder 86 or at its free end 78 can take place, as will be described later.
  • the actuating member 58 is shown in an unlocked position in which the locking lever 64 is engaged with the shoulder 86 of the actuating element 58 and holds the actuating element 58 against a force applied by the spring 84 actuating force in this position.
  • the actuator 58 is shown in a locked position after the lock lever 64 is actuated (with respect to FIG. 2 rotated clockwise about the bearing pin 62) or the engagement of the locking lever 64 on the shoulder 86 of the actuator 58 released or solved by the locking lever 64 previously made locking so that the actuator 58 by the applied force of the spring 84 was moved. Due to the rigid connection between the actuating element 58 and the locking element 54 produced via the connecting element 56, the latter was displaced accordingly and moved into its locking position, in which it extends through the previously aligned and aligned openings 52, 38 and 52 '. By the force applied by the spring 84 actuating force is the actuating element 58 and thus also the locking element in the locking position according to FIG. 4 held.
  • a handle-like projection 94 is provided on the connecting element 56, through which a counter to the force of the spring 84 acting tensile force can be applied or the locking element 54 from the openings 52, 38 and 52 'can be moved out.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Shovels (AREA)
  • Operation Control Of Excavators (AREA)
  • Lock And Its Accessories (AREA)

Claims (6)

  1. Agencement de chargeur frontal (12) pour un véhicule agricole (10) doté d'un tableau de bord (16) et d'un agencement de support à tige (18) servant à fixer un chargeur frontal (13) au tableau de bord (16), l'agencement de support à tige (18) comprenant un support d'appui (53) pouvant être posé sur un point de support (36) du tableau de bord (16) et un élément de verrouillage (54) disposé de façon à pouvoir être déplacé et pouvant être déplacé d'une position de déverrouillage dans une position de verrouillage dans laquelle l'élément de verrouillage (54) s'étend à travers au moins une première ouverture (52, 52') réalisée au niveau de l'agencement de support à tige (18) et à travers au moins une deuxième ouverture (38) réalisée au niveau du tableau de bord (16) et pouvant être amenée en alignement avec la première ouverture (52, 52'), l'élément de verrouillage (54) étant relié à un élément d'actionnement (58) disposé de façon décalée parallèlement à l'élément de verrouillage (54) par le biais d'un élément de jonction (56), l'élément d'actionnement (58) pouvant être actionné par une force extérieure et l'élément de verrouillage (54) pouvant être déplacé à l'aide de l'élément de jonction (56) par actionnement de l'élément d'actionnement (58) de la position de déverrouillage dans la position de verrouillage et contenant un dispositif de blocage (59) avec lequel l'élément d'actionnement (58) peut être bloqué dans la position de déverrouillage, caractérisé en ce que le dispositif de blocage (59) comprend un levier de blocage (64) au niveau de l'agencement de support à tige (18), ledit levier pouvant être comprimé par un second ressort (68) dans une position de blocage dans laquelle le levier de blocage (64) peut être mis en prise dans la position de déverrouillage avec un décrochement (86) réalisé au niveau de l'élément d'actionnement (58), le levier de blocage (64) comportant une surface d'actionnement (74) pouvant être amenée de telle sorte en prise avec le tableau de bord (16) que le levier de blocage (64) est extrait de la position de blocage en allant à l'encontre d'une force de déplacement du ressort (68).
  2. Agencement de chargeur frontal (12) selon la revendication 1, caractérisé en ce que l'élément d'actionnement (58) et l'élément de verrouillage (54) sont disposés de façon à pouvoir être coulissés contre l'agencement de support à tige (18), l'élément de verrouillage (54) étant déplacé conjointement avec l'élément d'actionnement (58) lors du coulissement de l'élément d'actionnement (58).
  3. Agencement de chargeur frontal (12) selon la revendication 1 ou 2, caractérisé en ce qu'un premier ressort (84) est prévu pour permettre d'actionner l'élément d'actionnement (58).
  4. Agencement de chargeur frontal (12) selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le ressort (84) prévu pour actionner l'élément d'actionnement (58) et un ressort à boudin.
  5. Agencement de chargeur frontal (12) selon l'une quelconque des revendications 1 à 4, caractérisé en ce que l'élément d'actionnement (58) et l'élément de verrouillage (54) prennent la forme de boulons ronds.
  6. Agencement de chargeur frontal (12) selon l'une quelconque des revendications 1 à 5, caractérisé en ce que pour détacher le chargeur frontal (13) du tableau de bord (16), l'élément d'actionnement (58) est disposé de façon à pouvoir être coulissé de telle sorte dans une ouverture de guidage (76) réalisée au niveau de l'agencement de support à tige (18) que dans une position de déverrouillage, le levier de blocage (64) peut être amené en prise, avec sa surface d'actionnement (74), avec le décrochement (86) de l'élément d'actionnement (58), dans une position imbriquée avec le tableau de bord (16).
EP11173966.0A 2010-07-27 2011-07-14 Agencement de chargeur frontal Not-in-force EP2412876B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102010038469A DE102010038469A1 (de) 2010-07-27 2010-07-27 Frontladeranordnung

Publications (3)

Publication Number Publication Date
EP2412876A2 EP2412876A2 (fr) 2012-02-01
EP2412876A3 EP2412876A3 (fr) 2012-02-22
EP2412876B1 true EP2412876B1 (fr) 2013-05-01

Family

ID=44508794

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11173966.0A Not-in-force EP2412876B1 (fr) 2010-07-27 2011-07-14 Agencement de chargeur frontal

Country Status (3)

Country Link
US (1) US10337166B2 (fr)
EP (1) EP2412876B1 (fr)
DE (1) DE102010038469A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104074215A (zh) * 2014-06-27 2014-10-01 广西大学 一种具有主动变胞功能的多连杆装载机构
US9903095B2 (en) 2015-01-30 2018-02-27 Caterpillar Inc. Tool coupler
JP6552399B2 (ja) * 2015-12-07 2019-07-31 株式会社クボタ 作業車及びフロントローダ
EP4491807A1 (fr) * 2023-07-13 2025-01-15 Wilhelm Stoll Maschinenfabrik GmbH Procédé de couplage automatique d'un chargeur frontal avec un véhicule de travail, dispositif de couplage de chargeur frontal automatique, véhicule de travail et système de véhicule de travail

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7430734U (de) * 1975-03-13 Baas Technik Gmbh Sicherheitskupplung
AT374857B (de) * 1982-12-06 1984-06-12 Hauer Franz Einrichtung zur loesbaren halterung eines frontladegeraetes an einem fahrzeug
US5078569A (en) * 1990-04-30 1992-01-07 J. I. Case Company Quick attaching mechanism for a front-end loader
DE4327942C1 (de) * 1993-08-19 1995-01-05 Deere & Co Vorrichtung zum Festlegen eines Werkzeugs an einem Hubwerk
US6142724A (en) * 1998-03-23 2000-11-07 Kubota Corporation Front loader attaching structure
DE10221941A1 (de) * 2002-05-17 2003-12-04 Deere & Co Vorrichtung zum Festlegen eines Werkzeugs an einem Hubwerk
JP2004092306A (ja) * 2002-09-03 2004-03-25 Sanyo Kiki Co Ltd 作業機の作業部着脱装置
JP4098142B2 (ja) * 2003-04-14 2008-06-11 三陽機器株式会社 作業機の作業部着脱用台車
SE525738C2 (sv) 2003-09-09 2005-04-19 Aaloe Ab Anordning för montering av en lastare till ett fordon
US7530779B2 (en) * 2007-09-28 2009-05-12 Cnh America Llc Cam-lock mechanism for attachment of implements to prime movers
KR100981213B1 (ko) * 2008-10-22 2010-09-10 김문수 트랙터 작업기용 수동식 연결장치
US8500386B2 (en) * 2010-04-26 2013-08-06 Deere & Company Latching system for automatically securing front-mounted loader mast to tractor mounting frame

Also Published As

Publication number Publication date
DE102010038469A1 (de) 2012-04-05
US20120027551A1 (en) 2012-02-02
US10337166B2 (en) 2019-07-02
EP2412876A2 (fr) 2012-02-01
EP2412876A3 (fr) 2012-02-22

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