FR2535934A1 - Automatic locking hitching hook - Google Patents
Automatic locking hitching hook Download PDFInfo
- Publication number
- FR2535934A1 FR2535934A1 FR8219055A FR8219055A FR2535934A1 FR 2535934 A1 FR2535934 A1 FR 2535934A1 FR 8219055 A FR8219055 A FR 8219055A FR 8219055 A FR8219055 A FR 8219055A FR 2535934 A1 FR2535934 A1 FR 2535934A1
- Authority
- FR
- France
- Prior art keywords
- linkage
- housing
- lock
- hook
- axis
- 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
Links
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60D—VEHICLE CONNECTIONS
- B60D1/00—Traction couplings; Hitches; Draw-gear; Towing devices
- B60D1/01—Traction couplings or hitches characterised by their type
- B60D1/04—Hook or hook-and-hasp couplings
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B59/00—Devices specially adapted for connection between animals or tractors and agricultural machines or implements
- A01B59/002—Details, component parts
- A01B59/006—Latched hooks
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B45/00—Hooks; Eyes
- F16B45/02—Hooks with pivoting or elastically bending closing member
- F16B45/021—Hooks with pivoting or elastically bending closing member the closing member being operable remotely, e.g. by cables, chains or rods
Abstract
Description
La présente invention a pour objet un crochet d'attelage à verrouillage automatique plus particulièrement destine à être disposé à l'extrémité arrière des bielles d'attelage à trois points d'un tracteur agricole. The present invention relates to an automatically locking coupling hook intended more particularly to be arranged at the rear end of the three-point coupling rods of an agricultural tractor.
Il est connu, en particulier par le brevet 1.530.160 au nom de Fendt, de disposer à l'extrémité arrière d'une bielle d'attelage un crochet dont le logement est fermée par un verrou mobile dont l'ouverture est commandée par une tringlerie actionnée par le conducteur du recteur redit verrou étant ramené en position de fermeture par un ressort
La présente invention a pour objet un perfectionnement consistant à munir un tel crochet d'attelage de moyens permettant d'en immobiliser le verrou en position ouverte, le verrouillage en position fermee se produisant automatiquement.It is known, in particular from patent 1,530,160 in the name of Fendt, to have at the rear end of a coupling rod a hook whose housing is closed by a movable lock whose opening is controlled by a linkage actuated by the driver of the rector redit lock being brought back into the closed position by a spring
The present invention relates to an improvement consisting in providing such a coupling hook with means making it possible to immobilize the lock in the open position, the locking in the closed position occurring automatically.
A titre d'exemple non limitatif et pour faciliter la comprehension de l'invention9 on a représenté aux dessins annexés
Figure 1 une vue en coupe partielle d'un crochet en position verrouillée ;
Figure 2 une vue en coupe partielle du dispositif de la figure 1 en position déverrouillée ;
Figure 3 une vue en coupe d'un dispositif analogue à celui des figures 1 et 2 disposé en bout de la bielledu 3ème point de l'attelage d'un tracteur agricole.By way of nonlimiting example and to facilitate understanding of the invention9, the accompanying drawings have been shown.
Figure 1 a partial sectional view of a hook in the locked position;
Figure 2 a partial sectional view of the device of Figure 1 in the unlocked position;
Figure 3 a sectional view of a device similar to that of Figures 1 and 2 disposed at the end of the connecting rod of the 3rd point of the hitch of an agricultural tractor.
Les figures 1 et 2 représentent un crochet 2 place en bout d'une bielle inférieure d'attelage 1 d'un tracteur agricole non représenté. Ce crochet comporte un logement semi-circulaire 3 destiné à recevoir la barre d'attelage 4 d'un outil agricole quelconque. Ce logement 3 est fermé par un verrou mobile 6 qui vient se placer au-dessus 4e la barre 4 lorsque cette dernière est mise en place dans dans le logement 3 afin de lly maintenir.Ce verrou 6 se déplace dans un évidement 5 ménagé dans la masse du crochet 2. Il est légèrement incurvé vers le haut et comporte uae rainure en arc de cercle, ladite rainure comportant a Sa paroi supérieure un cran 9 et un logement 10 ; le cran 9 est situe à l'avant de la rainure 8 et le cran 10 à l'arrière. Figures 1 and 2 show a hook 2 placed at the end of a lower link rod 1 of an agricultural tractor not shown. This hook comprises a semi-circular housing 3 intended to receive the drawbar 4 of any agricultural implement. This housing 3 is closed by a movable lock 6 which is placed above the 4th bar 4 when the latter is placed in in the housing 3 in order to maintain it. This lock 6 moves in a recess 5 formed in the mass of the hook 2. It is slightly curved upwards and has a groove in an arc, said groove having at its upper wall a notch 9 and a housing 10; the notch 9 is located at the front of the groove 8 and the notch 10 at the rear.
Cette rainure est traversée par deux axes 11 et 12 qui traversent de part en part l'évidement 5 dans lequel se déplace le verrou 6. Le verrou 6 comporte à sa partie avant qui fait saillie hors de l'évidement deux rampes 7 et 7a.This groove is crossed by two axes 11 and 12 which pass right through the recess 5 in which the latch 6 moves. The latch 6 has at its front part which projects out of the recess two ramps 7 and 7a.
A son extrémité arrière, le verrou 6 est relie à unetringlerie de commande 14 qui traverse la paroi supérieure de l'évidement 5 par un orifice 15. En outre, le verrou 6 est sollicité vers le bas, dans une direction opposée à celle de la tringlerie 14 par un ressort 13 qui est fixe d'une part au voisinage du fond de l'évidement 5 et d'autre part au verrou 6 en un point situé à l'intérieur du verrou par rapport au point de fixation de la tringlerie 14
En position verrouillée, qui est celle représentée à la figure 1, sous l'action du ressort 13, l'axe 12 pénètre dans le logement 10 de la rainure 8 du verrou 6 et celuici est donc verrouillé en position fermée. La barre 4 est donc maintenue dans le logement 3 quelles que soient les sollicitations qu'elle subit.At its rear end, the latch 6 is connected to a control linkage 14 which passes through the upper wall of the recess 5 through an orifice 15. In addition, the latch 6 is biased downward, in a direction opposite to that of the linkage 14 by a spring 13 which is fixed on the one hand in the vicinity of the bottom of the recess 5 and on the other hand to the lock 6 at a point located inside the lock relative to the point of attachment of the linkage 14
In the locked position, which is that shown in FIG. 1, under the action of the spring 13, the axis 12 enters the housing 10 of the groove 8 of the lock 6 and this is therefore locked in the closed position. The bar 4 is therefore maintained in the housing 3 whatever the stresses it undergoes.
Pour dételer la barre d'attelage 4, on effectue une traction sur la tringlerie 14 comme indiqué par la flèche f sur la figure 2. Le verrou 6 en prenant appui sur l'axe Il pivote vers le haut, ce qui fait que l'axe 12 sort du logement 1Q ce qui déverrouille le verrou 6 qui coulisse vers l'carrière Les tractions exercées en directions opposées par la tringlerie 14 et le ressort 13 maintiennent la rainure 8 enapnul contre l'axe 11 jusqu'à ce que celui-ci pèttètre dans le cran 9. On peut alors relâcher la traction sur la tringlerie: le verrou est maintenu en position ouverte par appui de l'axe 11 dans le cran 9. To unhitch the drawbar 4, pull on the linkage 14 as indicated by the arrow f in Figure 2. The lock 6 by resting on the axis It pivots upwards, so that the axis 12 comes out of the housing 1Q which unlocks the bolt 6 which slides towards the quarry The pulls exerted in opposite directions by the linkage 14 and the spring 13 hold the groove 8 in apnoid against the axis 11 until the latter peter in the notch 9. We can then release the traction on the linkage: the lock is held in the open position by pressing the pin 11 in the notch 9.
Dans cette position,I'extrémité du verrou 6 fait légèrement saillie au-dessus du logement 3 ; de telle sorte que,lorsque l'on va sortir la barre d'attelage 4 du logement 3, comme représenté à la figure 2, ladite barre 4 va venir appuyer contre la rampe 7a et faire reculer légèrement le verrou 6 en le soulevant, ce qui dégage l'axe 11 du cran 9, Ainsi lorsque la barre 4 est complètement sortie du logement 3, le verrou, sous l'effet du ressort 13 va ressortir complètement et reprendre sa position d'origine de verrouillage, l'axe 12 etant dans le logement 10,
Pour remettre la barre 4 en position, il suffit de la présenter aucdessus du logement 3 et de l'abaisser (ou de soulever la bielle d'attelage 1), La barre 4 fait alors appui sur la rampe 7 et fait reculer le verrou 6. Mais celui-ci ne se verrouille pas en position ouverte parce que, pour qu'il en soit ainsi, il faut qu'il y ait l'action simultanée de la tringlerie 14 et du ressort 13, ce qui imprime au verrou un couple qui le maintient en appui contre l'axe 11. En conséquence, le verrou 6 revient à sa position d'origine après passage de la barre 4 qui se trouve ainsi au.tomatiquement verrouillé en position.In this position, the end of the latch 6 protrudes slightly above the housing 3; so that, when the coupling bar 4 is removed from the housing 3, as shown in FIG. 2, said bar 4 will come to press against the ramp 7a and cause the bolt 6 to move back slightly by lifting it, this which releases the axis 11 from the notch 9, So when the bar 4 is completely out of the housing 3, the lock, under the effect of the spring 13 will come out completely and resume its original locking position, the axis 12 being in housing 10,
To return the bar 4 to its position, it suffices to present it above the housing 3 and to lower it (or to raise the link rod 1). The bar 4 then presses on the ramp 7 and moves the lock 6 back. But it does not lock in the open position because, for it to be so, there must be the simultaneous action of the linkage 14 and the spring 13, which gives the lock a couple which keeps it in abutment against the axis 11. Consequently, the latch 6 returns to its original position after passage of the bar 4 which is thus au.tomatiquement locked in position.
La figure 3 représente la même disposition destinez à la bielle du troisième point la de l'attelage à trois points. Le crochet 2a comporte un logement sphérique 3a destiné à recevoir la rotule 16. Le verrou 6a est pratiquement identique au verrou 6 et comporte de la même maniere un cran 9a dans lequel vient se loger l'axe 11a, un logement 10a pour l'axe 12a, un ressort 13a et une tringlerie de commande 14a. Figure 3 shows the same arrangement for the connecting rod of the third point of the three-point hitch. The hook 2a comprises a spherical housing 3a intended to receive the ball joint 16. The latch 6a is practically identical to the latch 6 and likewise comprises a notch 9a in which is housed the axis 11a, a housing 10a for the axis 12a, a spring 13a and a control linkage 14a.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8219055A FR2535934A1 (en) | 1982-11-15 | 1982-11-15 | Automatic locking hitching hook |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8219055A FR2535934A1 (en) | 1982-11-15 | 1982-11-15 | Automatic locking hitching hook |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2535934A1 true FR2535934A1 (en) | 1984-05-18 |
FR2535934B1 FR2535934B1 (en) | 1985-04-19 |
Family
ID=9279165
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8219055A Granted FR2535934A1 (en) | 1982-11-15 | 1982-11-15 | Automatic locking hitching hook |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2535934A1 (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2555398A1 (en) * | 1983-11-24 | 1985-05-31 | Huard Ucf | Automatic coupling hooks intended to be placed at the ends of three-point coupling connecting rods |
FR2582766A1 (en) * | 1985-05-31 | 1986-12-05 | Galibert Alain | Lightweight snap shackle with opening via electric contact |
US5050684A (en) * | 1989-04-15 | 1991-09-24 | Jean Walterscheid Gmbh | Coupling hook |
FR2676786A1 (en) * | 1991-05-22 | 1992-11-27 | Seror Alain | Assembly device for tubes |
EP0523332A1 (en) * | 1991-07-10 | 1993-01-20 | C.B.M. S.p.A. | Automatic locking and release mechanism for three-point hitches |
FR2697207A1 (en) * | 1992-10-23 | 1994-04-29 | Walterscheid Gmbh Gkn | Hitch hook for the lower arm of a tractor three-point hitch. |
FR2705064A1 (en) * | 1993-05-12 | 1994-11-18 | Walterscheid Gmbh Gkn | Coupling hook for the lower arms of a tractor three-point hitch. |
WO2000010376A1 (en) * | 1998-08-21 | 2000-03-02 | Paavo Viikki | Coupling hook particularly for the lower arms of a three-point linkage of a tractor |
GB2417521A (en) * | 2004-08-27 | 2006-03-01 | Jack Ivan Braten | Hook having spring biased locking dog and pulling element |
ITBO20090583A1 (en) * | 2009-09-15 | 2011-03-16 | Cbm Spa | PAIR OF HOOKS FOR THREE POINTS ATTACK |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR352458A (en) * | 1905-03-17 | 1905-08-11 | Alfred Paris | Safety strap hook |
DE1265472B (en) * | 1967-03-03 | 1968-04-04 | Eberhard Geb | Locking device for a quick coupling to connect a tractor to a work device |
FR2347865A2 (en) * | 1975-03-11 | 1977-11-10 | Walterscheid Gmbh Jean | IMPROVEMENT OF HITCH HOOKS ESPECIALLY FOR THE THREE POINT LINKAGE OF A TRACTOR |
FR2444396A1 (en) * | 1978-12-22 | 1980-07-18 | Herriau Sa | Farm tractor lifting arm automatic hitch - has spring attached to component sliding in guide in rotary catch |
DE3033663A1 (en) * | 1980-09-06 | 1982-03-18 | Jean Walterscheid Gmbh, 5204 Lohmar | Coupling hook for tractor hitch - has cable operated swinging plate controlling release finger, swung between open and closed positions |
-
1982
- 1982-11-15 FR FR8219055A patent/FR2535934A1/en active Granted
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR352458A (en) * | 1905-03-17 | 1905-08-11 | Alfred Paris | Safety strap hook |
DE1265472B (en) * | 1967-03-03 | 1968-04-04 | Eberhard Geb | Locking device for a quick coupling to connect a tractor to a work device |
FR2347865A2 (en) * | 1975-03-11 | 1977-11-10 | Walterscheid Gmbh Jean | IMPROVEMENT OF HITCH HOOKS ESPECIALLY FOR THE THREE POINT LINKAGE OF A TRACTOR |
FR2444396A1 (en) * | 1978-12-22 | 1980-07-18 | Herriau Sa | Farm tractor lifting arm automatic hitch - has spring attached to component sliding in guide in rotary catch |
DE3033663A1 (en) * | 1980-09-06 | 1982-03-18 | Jean Walterscheid Gmbh, 5204 Lohmar | Coupling hook for tractor hitch - has cable operated swinging plate controlling release finger, swung between open and closed positions |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2555398A1 (en) * | 1983-11-24 | 1985-05-31 | Huard Ucf | Automatic coupling hooks intended to be placed at the ends of three-point coupling connecting rods |
FR2582766A1 (en) * | 1985-05-31 | 1986-12-05 | Galibert Alain | Lightweight snap shackle with opening via electric contact |
US5050684A (en) * | 1989-04-15 | 1991-09-24 | Jean Walterscheid Gmbh | Coupling hook |
FR2676786A1 (en) * | 1991-05-22 | 1992-11-27 | Seror Alain | Assembly device for tubes |
EP0523332A1 (en) * | 1991-07-10 | 1993-01-20 | C.B.M. S.p.A. | Automatic locking and release mechanism for three-point hitches |
FR2697207A1 (en) * | 1992-10-23 | 1994-04-29 | Walterscheid Gmbh Gkn | Hitch hook for the lower arm of a tractor three-point hitch. |
FR2705064A1 (en) * | 1993-05-12 | 1994-11-18 | Walterscheid Gmbh Gkn | Coupling hook for the lower arms of a tractor three-point hitch. |
ES2112707A1 (en) * | 1993-05-12 | 1998-04-01 | Walterscheid Gmbh Gkn | Coupling hook for the lower steering arms of a three-point attaching device of a tractor |
WO2000010376A1 (en) * | 1998-08-21 | 2000-03-02 | Paavo Viikki | Coupling hook particularly for the lower arms of a three-point linkage of a tractor |
GB2417521A (en) * | 2004-08-27 | 2006-03-01 | Jack Ivan Braten | Hook having spring biased locking dog and pulling element |
ITBO20090583A1 (en) * | 2009-09-15 | 2011-03-16 | Cbm Spa | PAIR OF HOOKS FOR THREE POINTS ATTACK |
EP2324691A3 (en) * | 2009-09-15 | 2012-11-14 | CBM S.p.A. | Pair of hooks for three-point coupling |
Also Published As
Publication number | Publication date |
---|---|
FR2535934B1 (en) | 1985-04-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |