EP1774106B1 - Vorrichtung zur kopplung eines laders an einen traktor - Google Patents

Vorrichtung zur kopplung eines laders an einen traktor Download PDF

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Publication number
EP1774106B1
EP1774106B1 EP05775245A EP05775245A EP1774106B1 EP 1774106 B1 EP1774106 B1 EP 1774106B1 EP 05775245 A EP05775245 A EP 05775245A EP 05775245 A EP05775245 A EP 05775245A EP 1774106 B1 EP1774106 B1 EP 1774106B1
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EP
European Patent Office
Prior art keywords
coupling
catch
tractor
loader
members
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Application number
EP05775245A
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English (en)
French (fr)
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EP1774106A1 (de
Inventor
Loïc MAILLEUX
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Mailleux SA
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Mailleux SA
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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
    • E02F3/627—Devices to connect beams or arms to tractors or similar self-propelled machines, e.g. drives therefor
    • E02F3/6273—Devices to connect beams or arms to tractors or similar self-propelled machines, e.g. drives therefor using legs to support the beams or arms on the ground during the connecting process
    • 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
    • E02F3/38—Cantilever beams, i.e. booms;, e.g. manufacturing processes, forms, geometry or materials used for booms; Dipper-arms, e.g. manufacturing processes, forms, geometry or materials used for dipper-arms; Bucket-arms

Definitions

  • the present invention relates to a device for coupling a loader on a tractor.
  • a loader in particular a front loader, is a device intended to be mounted at the front of an agricultural tractor to perform all the handling tasks of various materials, such as, for example, straw, hay, manure or soil. .
  • the tractor T is equipped with a BA adapter frame which forms the interface between the loader and the tractor and whose shape is adapted to each tractor model.
  • This adapter frame BA supports two coupling heads 2, one on each side of the tractor.
  • the front loader C comprises, in the usual manner, an articulated B stretcher, provided at its front end with a tool holder frame CPO on which is mounted a tool O , here a bucket.
  • the stretcher B comprises two parallel arms. The rear end of each of these arms is provided with a hitch frame 1.
  • the loader C also includes a pair of lifting cylinders V (only one of which is visible in the front view corresponding to the figure 1 ) which makes it possible to pivot the two arms of the stretcher B about axes of articulation supported by the hitching frames 1.
  • Each hitch frame 1 constitutes the fixed part of the loader, intended to be attached to the coupling head 2 placed opposite
  • each coupling frame 1 of the loader C is hooked to the corresponding coupling head 2 of the tractor T by means of at least one pair of members complementary coupling, male and female.
  • the operator advances the tractor T towards the loader C which rests on the ground held by crutches BE.
  • the tractor continues its movement until the male or female members carried by the coupling frame 1 mate with the respective female or male members carried by the coupling head 2.
  • Locking means are then engaged, usually automatically to lock this coupling.
  • each coupling head of the tractor comprises two coupling cavities and a stop and each bracket of the loader comprises two bars intended to be received in said cavities and a latch urged by a spring.
  • the bars engage in the cavities and are locked in this position by the latch which cooperates with said stop.
  • each of the hitch frames of the charger is not necessarily rigorously facing the coupling means of each of the coupling heads.
  • the present invention therefore aims to provide a device for coupling a loader C on a tractor T may be pre-locked, so that the operator can connect the hydraulic connections and remove the crutches supporting the charger, without risk fall from it.
  • Another object of the invention is that once the coupling device is pre-locked, the operator can use the hydraulic controls to center the loader relative to the tractor and bring it to its final position in which it can then be locked. .
  • the invention relates to a coupling device of a loader on a tractor, the hitching frame of the loader being provided with one of the two male or female coupling members of each of two pairs of coupling members called “front” and “rear” and a latch biased by a spring, the coupling head of an adapter frame carried by said tractor being provided with two coupling members complementary to those worn by said coupling frame and locking means, said latch cooperating with said locking means to occupy a so-called “locking" position, wherein said male members are fully coupled with said female members.
  • said coupling head comprises pre-locking means with which said latch can cooperate to occupy a so-called "pre-locking" position, in which the male and female members of each pair are engaged incompletely, so that that the loader is hooked to the tractor but that there is a clearance between these male and female members allowing adjustment of the position of the loader relative to the tractor, the spring tending permanently to maintain said latch in the locking or pre-locking position .
  • the hitch frame 1 shown on the Figures 2 to 5 is the one that is intended to be attached to the right side of the tractor. It comprises two parallel flanges, spaced from each other, the flange located inward, that is to say facing the tractor bearing the reference numeral 10 and the other the reference 10 '.
  • the coupling head 2 has two ends, called “front” and “rear” with reference to the direction of travel of the tractor, referenced respectively 28 and 26.
  • Each of these U-shaped hands constitutes the female member of a pair of coupling members. Their concavity is oriented toward the front of the tractor. The central axis of their concave portion is perpendicular to the plane P.
  • the upper flange 23 of the coupling head 2 extends from an area above the hand before 21 to the entrance of the rear hand 22.
  • This flange 23 is a slightly inclined running ramp to the top from the front to the back of the head 2.
  • pre-locking notches Two notches 24, 24 ', called “pre-locking notches", are provided on either side of the running ramp 23, substantially at half the length of this ramp.
  • notches are symmetrical with respect to the vertical median plane P. They have a side view in the form of an open V upwards.
  • Two stops 25, 25 'called “locking stops” are also provided on either side of the rolling ramp 23. They are symmetrical with respect to the plane P.
  • stops 25 and 25 are arranged in the immediate vicinity of the notches 24, respectively 24', and between these notches and the rear hand 22.
  • the running ramp 23 has a thickness less than that of its front portion.
  • the portion of the ramp 23 narrower, located between these notches and stops is reference 230.
  • a recess 260 is formed on the outward facing face of the rounded rear end 26 of the coupling head 2. Its concavity is oriented towards the rear of the tractor. This recess is visible on the figures 7 and 8 .
  • the head 2 comprises under the hand before 21, a lateral guide roller 27 mounted idler about an axis 270 perpendicular to the plane P.
  • This guide roller 27 is slightly offset towards the inside of the tractor relative to the median plane P.
  • the hitch frame 1 will now be described in more detail.
  • the bar intended to mate with the front hand 21 is called the "front” bar and has the reference numeral 11
  • the bar intended to mate with the rear hand 22 is referred to as the "rear” bar and has the reference numeral 12.
  • Each bar 11 and 12 extend along respective axes X1-X'1 and X2-X'2 perpendicular to the plane of the flanges 10 and 10 '.
  • Each bar constitutes the male member of a pair of coupling members.
  • a spacer 13 extends between the two flanges 10 and 10 ', it is disposed substantially above the bar 12.
  • the hitch frame 2 further comprises a latch 14 pivotally mounted at one of its ends about an axis perpendicular to the plane of the two flanges 10 and 10 '.
  • the axis about which pivots this latch 14 is the rear bar 12.
  • this latch 14 consists of two half latches 140, 140 ', parallel, generally triangular in shape, the tip is oriented downwards.
  • Each half-latch 140 has a front end 142, a front face 144 and a rear end 143 pierced with an orifice 141 allowing the passage of the axis X2-X'2 of the bar 12.
  • the half-latch 140 ' has a same structure and the same elements bear the same numerical references plus the prime sign.
  • the two half latches 140 and 140 ' are further joined at their front ends 142, 142' by fastening means, such as a bolt 163 and a nut 164.
  • the structure of the bar 12 will now be detailed with reference to the figure 3 . It has the general shape of a coil.
  • Each conical portion 121, 121 ' is pierced with a central orifice allowing passage of the axis X2-X'2 and is welded to a flange 10, respectively 10'.
  • the cylindrical axis X2-X'2 is supported on one of the flanges and fixed on the other, for example by a screw 123, so as to be removable.
  • the latch 14 is permanently biased by a helical spring 15.
  • a rod 16 is interposed between the front ends 142, 142 'of the two half latches 140 and 140'. It extends in the vertical median plane P.
  • the spring 15 is fixed at its lower end to a fixing pin 150 which extends between the two flanges 10 and 10 ', perpendicular to them and at its upper end 152 to an orifice 61 formed in the rod 16 .
  • the spring 15 pulls on the upper end of the rod 16, which tends to permanently move the latch 14 downwards.
  • a lever 17 extends between the two flanges 10 and 10 'parallel to the plane P. It comprises two parallel arms, namely an outer arm 174' longer and a shorter inner arm 174.
  • This lever 17 is articulated about an axis of rotation 171 perpendicular to the plane P and mounted at its two ends between the two flanges 10 and 10 '.
  • an orifice for receiving one end of said axis of rotation 171 is formed in each of the flanges 10, 10 '.
  • This orifice is of substantially triangular shape with rounded angles and its dimensions are slightly greater than that of the ends of the axis 171.
  • the axis of rotation 171 is mounted between the two flanges 10 and 10 'so that its ends rest on the edges of said receiving holes and they can move with a slight clearance inside these orifices, as one can see it on the Figures 8C and 8D for example.
  • a rod 172 is fixed between the front ends of the two arms 174 and 174 ', perpendicular to the plane P. It passes through the oblong hole 162 of the rod 16 within which it can move. This oblong hole 162 allows a slight clearance between the lever 17 and the rod 16.
  • a second coil spring 18 is disposed parallel to the first spring 15. Its lower end is fixed to the pin 150 and its upper end to the rod 172. This spring 18 tends to bring the front end of the lever 17 permanently down, in the position illustrated on the figure 2 .
  • a rod 175 forming a stop for the lever 17 is fixed between the two flanges 10 and 10 ', perpendicular to them, under the part of the lever 17 which extends between its front end and the axis 171.
  • the outer arm 174 'of the lever 17 is provided at its rear end with a handle 170 which protrudes outwardly of the tractor, perpendicular to the plane P, out of the outer flange 10'.
  • the outer arm 174 'of the lever 17 has at its rear end, on its opposite side to that where is fixed the handle 170, a lug 173.
  • This lug is capable of cooperating with the recess 260 of the head of coupling 2 as will be described later.
  • the outer flange 10 ' has along its rear edge, in its upper part, a recess 101' which constitutes an abutment to the upward movement of the lever 17 and in its middle part, a cavity 100 '.
  • the latch 14 could be slidable instead of pivoting.
  • the idler roll 122 of the bar 12 begins to roll along the running ramp 23, the conical portions 121 and 21 'of the coil-shaped bar facilitating the alignment of the coupling frame 1 in the median plane P of the head coupling 2.
  • the bars 11 and 12 are introduced at the entrance of the U-shaped hands 21, respectively 22.
  • the hitch frame 1 of the loader is secured to the coupling head 2 of the tractor adaptation frame.
  • the latch 14 In this position, the latch 14 has returned to its original position oriented at the maximum downward.
  • the front faces 144, 144 'of the latch 14 then come into contact with the stops 25, respectively 25'.
  • the figure 8A corresponds to the figure 7F .
  • the operator lowers the lever 17 with the handle 170 and brings it down until the handle 170 is locked in the cavity 100 '.
  • the operator can then start to reverse the loader and the coupling head 2 to the right (arrow G).
  • the rim of the recess 260 acts on the pin 173 and drives it slightly backwards, which is possible because the axis of rotation 171 of the lever 17 is mounted with a certain clearance in the recesses 102 ' . This has the effect, on the other side of the lever, to release the handle 170 out of the cavity 100 '.

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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)
  • Agricultural Machines (AREA)
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Claims (11)

  1. Vorrichtung zum Kuppeln eines Ladearms (C) an einen Traktor (T), wobei der Kupplungsrahmen (1) des Ladearms (C) mit jeweils einem der zwei männlichen (11, 12) oder weiblichen (21, 22) Kupplungselemente jedes von zwei Paaren von Kupplungselementen, die als "vorderes" (11, 21) und "hinteres" (12, 22) bezeichnet werden, und einem Verriegelungsschnapper (14), auf den eine Feder (15) einwirkt, ausgestattet ist, und wobei der Kupplungskopf (2) eines am Traktor (T) angebrachten Adaptationsgestells (BA) mit zwei Kupplungselementen (12, 11, 22, 21), die zu den am Kupplungsrahmen (1) angebrachten komplementär sind, und mit Verriegelungsmitteln (25, 25') ausgestattet ist, wobei der Verriegelungsschnapper (14) mit den Verriegelungsmitteln (25, 25') zusammenarbeitet, um eine Position einzunehmen, die als "verriegelt" bezeichnet wird und in der die männlichen Elemente (11, 12) an die weiblichen Elementen (21, 22) vollständig angekuppelt sind, dadurch gekennzeichnet, dass der Kupplungskopf (2) Vorverriegelungsmittel (24, 24') umfasst, mit denen der Verriegelungsschnapper (14) zusammenarbeiten kann, um eine als "vorverriegelt" bezeichnete Position einzunehmen, in der die männlichen (11, 12) und weiblichen (21, 22) Elemente jedes Paares in unvollständiger Weise im Eingriff sind, derart, dass der Ladearm (C) am Traktor (T) eingehängt ist, dass jedoch zwischen diesen männlichen (11, 12) und weiblichen (21, 22) Elementen ein Spiel vorhanden ist, das eine Korrektur der Position des Ladearms (C) relativ zum Traktor (T) gestattet, wobei die Feder (15) ununterbrochen darauf abzielt, den Verriegelungsschnapper (14) in der verriegelten Position oder der vorverriegelten Position zu halten.
  2. Kupplungsvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die männlichen Kupplungselemente (11, 12) durch einen Stab und die weiblichen Kupplungselemente (21, 22) durch eine U-förmige Aufnahme gebildet werden, wobei der Stab (11, 12) an der Mündung der U-förmigen Aufnahme (21, 22) angeordnet ist, wenn der Verriegelungsschnapper (14) sich in der vorverriegelten Position befindet, und vollständig in den hinteren Teil der U-förmigen Aufnahme eingeführt ist, wenn der Verriegelungsschnapper (14) sich in der verriegelten Position befindet.
  3. Kupplungsvorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die männlichen Kupplungselemente (11, 12) fest mit dem Kupplungsrahmen (1) verbunden sind und die weiblichen Kupplungselemente (21, 22) fest mit dem Kupplungskopf (2) verbunden sind.
  4. Kupplungsvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Verriegelungsschnapper (14) um eine Achse drehbar montiert ist, die am Kupplungsrahmen (1) angebracht ist.
  5. Kupplungsvorrichtung nach Anspruch 3 und 4, dadurch gekennzeichnet, dass die Drehachse des Verriegelungsschnappers (14) der Stab (12) des hinteren Paares von Kupplungselementen (12, 22) ist.
  6. Kupplungsvorrichtung nach Anspruch 3 oder 5, dadurch gekennzeichnet, dass der Kupplungskopf (2) eine Rollrampe (23) umfasst, die sich vor der U-förmigen Aufnahme (22) des hinteren Paares von Kupplungselementen befindet, wobei auf jeder Seite der Wälzrampe eine Einkerbung zur Vorverriegelung (24, 24') und ein Verriegelungsanschlag (25, 25') vorgesehen sind, die dafür geeignet sind, mit dem Verriegelungsschnapper (14) zusammenzuarbeiten, und dadurch, dass der Verriegelungsschnapper (14) zwei Halb-Verriegelungsschnapper (140, 140') umfasst, die dazu fähig sind, auf beiden Seiten dieser Rampe (23) einzugreifen.
  7. Kupplungsvorrichtung nach Anspruch 6, dadurch gekennzeichnet, dass der Stab (12) des hinteren Paares von Kupplungselementen (12, 22) in seinem mittleren Abschnitt eine lose montierte Rolle (122) aufweist, die dazu fähig ist, auf der Rollrampe (23) des Kupplungskopfs (2) abzurollen.
  8. Kupplungsvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Verriegelungsschnapper (14) von der verriegelten Position oder der vorverriegelten Position in eine als "entriegelte Position" bezeichnete Position bewegt werden kann, in der er nicht mit den Mitteln zur Verriegelung (25, 25') oder zur Vorverriegelung (24, 24') zusammenarbeitet, derart, dass der Ladearm (C) vom Traktor (T) abgehängt werden kann, wobei seine Bewegung in diese entriegelte Position mit Hilfe eines Betätigungshebels (17) ausgeführt wird, der gegen die Rückholkräfte der Feder (15) des Verriegelungsschnappers wirkt.
  9. Kupplungsvorrichtung nach Anspruch 8, dadurch gekennzeichnet, dass der Kupplungsrahmen (1) eine Feststellaussparung (100') umfasst, die es gestattet, den Betätigungshebel (17) in der Position festzustellen, in der der Verriegelungsschnapper (14) sich in der entriegelten Position befindet.
  10. Kupplungsvorrichtung nach Anspruch 9, dadurch gekennzeichnet, dass das hintere Ende (26) des Kupplungskopfs (2) eine Freigabevertiefung (260) umfasst, die es beim Abkuppeln des Ladearms (C) und des Traktors (T) gestattet, den Betätigungshebel (17) aus der Feststellaussparung (100') herauszuholen, um den Verriegelungsschnapper (14) freizugeben.
  11. Kupplungsvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Kupplungskopf (2) eine seitliche Rolle (27) umfasst, zur Führung des unteren Rands einer der Wangen (10) des Kupplungsrahmens (1) des Ladearms bei Vorgängen des Ankuppelns und Abkuppelns des Ladearms (C) und des Traktors (T).
EP05775245A 2004-06-10 2005-06-06 Vorrichtung zur kopplung eines laders an einen traktor Active EP1774106B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0406285A FR2871485B1 (fr) 2004-06-10 2004-06-10 Dispositif d'accouplement d'un chargeur sur un tracteur
PCT/FR2005/001374 WO2006003286A1 (fr) 2004-06-10 2005-06-06 Dispositif d'accouplement d'un chargeur sur un tracteur

Publications (2)

Publication Number Publication Date
EP1774106A1 EP1774106A1 (de) 2007-04-18
EP1774106B1 true EP1774106B1 (de) 2008-10-22

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP05775245A Active EP1774106B1 (de) 2004-06-10 2005-06-06 Vorrichtung zur kopplung eines laders an einen traktor

Country Status (12)

Country Link
US (1) US7549832B2 (de)
EP (1) EP1774106B1 (de)
JP (1) JP2008501879A (de)
KR (1) KR20070035031A (de)
AT (1) ATE412089T1 (de)
AU (1) AU2005259074A1 (de)
CA (1) CA2569799C (de)
DE (1) DE602005010586D1 (de)
ES (1) ES2315900T3 (de)
FR (1) FR2871485B1 (de)
NZ (1) NZ552198A (de)
WO (1) WO2006003286A1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013222165A1 (de) 2013-10-01 2015-04-02 Deere & Company Frontladeranordnung
EP2857593A1 (de) 2013-10-01 2015-04-08 Deere & Company Frontladeranordnung
EP2857594A1 (de) 2013-10-01 2015-04-08 Deere & Company Frontladeranordnung

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DE102007048334A1 (de) * 2007-10-09 2009-04-23 Agco Gmbh Kopplungsvorrichtung mit halbautomatischer Verriegelung
US8287226B1 (en) 2009-09-10 2012-10-16 Westendorf Manufacturing Co., Inc. Front end loader attachment and locking mechanism
KR200458229Y1 (ko) * 2009-12-29 2012-01-30 박종병 트랙터 작업기용 연결장치
US8500386B2 (en) * 2010-04-26 2013-08-06 Deere & Company Latching system for automatically securing front-mounted loader mast to tractor mounting frame
KR101416514B1 (ko) * 2013-07-05 2014-07-14 (주)태성공업 트렉터용 작업기 탈부착 구조
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
US10208451B2 (en) 2015-10-26 2019-02-19 Kubota Corporation Work vehicle and front loader
JP6807296B2 (ja) * 2017-11-02 2021-01-06 株式会社クボタ フロントローダの着脱構造、フロントローダ及び作業車
US10876271B2 (en) 2017-05-11 2020-12-29 Kubota Corporation Attaching-detaching structure of a front loader, front loader and work vehicle
JP6818627B2 (ja) * 2017-05-11 2021-01-20 株式会社クボタ フロントローダの着脱構造、フロントローダ及び作業車
US10119242B1 (en) * 2018-03-27 2018-11-06 Deere & Company Front loader mounting arrangement for a work vehicle
JP6942668B2 (ja) * 2018-04-19 2021-09-29 株式会社クボタ フロントローダの着脱構造、フロントローダ及び作業車
US10570581B2 (en) * 2018-06-01 2020-02-25 Deere & Company Latching arrangement for coupling a front loader to a work vehicle
JP7185591B2 (ja) * 2019-04-24 2022-12-07 株式会社クボタ フロントローダの着脱構造、フロントローダ及び作業車

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013222165A1 (de) 2013-10-01 2015-04-02 Deere & Company Frontladeranordnung
EP2857593A1 (de) 2013-10-01 2015-04-08 Deere & Company Frontladeranordnung
EP2857592A1 (de) 2013-10-01 2015-04-08 Deere & Company Frontladeranordnung
EP2857594A1 (de) 2013-10-01 2015-04-08 Deere & Company Frontladeranordnung

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NZ552198A (en) 2009-11-27
WO2006003286A1 (fr) 2006-01-12
ATE412089T1 (de) 2008-11-15
CA2569799C (fr) 2012-08-28
US7549832B2 (en) 2009-06-23
FR2871485B1 (fr) 2006-09-01
AU2005259074A1 (en) 2006-01-12
KR20070035031A (ko) 2007-03-29
ES2315900T3 (es) 2009-04-01
DE602005010586D1 (de) 2008-12-04
CA2569799A1 (fr) 2006-01-12
JP2008501879A (ja) 2008-01-24
FR2871485A1 (fr) 2005-12-16
EP1774106A1 (de) 2007-04-18
US20070292254A1 (en) 2007-12-20

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