FR2483733A1 - Ground-working implement automatic release mechanism - has pair of toggle links between implement and mounting and spring biassing tine toward extended position - Google Patents

Ground-working implement automatic release mechanism - has pair of toggle links between implement and mounting and spring biassing tine toward extended position Download PDF

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Publication number
FR2483733A1
FR2483733A1 FR8008759A FR8008759A FR2483733A1 FR 2483733 A1 FR2483733 A1 FR 2483733A1 FR 8008759 A FR8008759 A FR 8008759A FR 8008759 A FR8008759 A FR 8008759A FR 2483733 A1 FR2483733 A1 FR 2483733A1
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France
Prior art keywords
tool
implement
mounting
ground
support
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
FR8008759A
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French (fr)
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FR2483733B3 (en
Inventor
Rene Gard
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GARD PERE ET FILS SA
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GARD PERE ET FILS SA
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 GARD PERE ET FILS SA filed Critical GARD PERE ET FILS SA
Priority to FR8008759A priority Critical patent/FR2483733A1/en
Publication of FR2483733A1 publication Critical patent/FR2483733A1/en
Application granted granted Critical
Publication of FR2483733B3 publication Critical patent/FR2483733B3/fr
Granted legal-status Critical Current

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Classifications

    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01BSOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B61/00Devices for, or parts of, agricultural machines or implements for preventing overstrain
    • A01B61/04Devices for, or parts of, agricultural machines or implements for preventing overstrain of the connection between tools and carrier beam or frame
    • A01B61/044Devices for, or parts of, agricultural machines or implements for preventing overstrain of the connection between tools and carrier beam or frame the connection enabling a yielding pivoting movement around a substantially horizontal and transverse axis
    • A01B61/046Devices for, or parts of, agricultural machines or implements for preventing overstrain of the connection between tools and carrier beam or frame the connection enabling a yielding pivoting movement around a substantially horizontal and transverse axis the device including an energy accumulator for restoring the tool to its working position

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Soil Sciences (AREA)
  • Environmental Sciences (AREA)
  • Agricultural Machines (AREA)

Abstract

The automatic release mechanism is for ground-working implements mounted on a tractor etc., particularly tines, the implement hinging on its mounting about a fixed transverse axis. There is an additional coupling between the implement (6) and the mounting (2), consisting of a pair of toggle links (8,9) hinging together on a transverse axis (10), and by other such axes (11,3) on the mounting and implement respectively. The folding assembly can be held in the extended position by springs (12), and there can be an adjustable stop (15) on one of the toggle links, bearing against the other so as to limit the amount of maximum extension. This adjusts the force opposed to forward implement movement necessary to cause its release.

Description

L'invention a pour objet un dispositif de déclenchement automatique adaptable a des outils de travail du sol montés sur un tracteur ou sur un appareil porté ou
Ftiré par tracteur et ples partioulièrement à des dente de travail du sol. Un tel dispositif permet a un outil rencontraint un obstacle, tel qu'une pierre, une racine ou tout autre obstacle, de se dégager en assurant ainsi la protection de l'outil et du tracteur.
The subject of the invention is an automatic triggering device adaptable to tillage tools mounted on a tractor or on a mounted or
Pulled by tractor and particularly for tillage. Such a device allows a tool encountered an obstacle, such as a stone, a root or any other obstacle, to be released, thus ensuring the protection of the tool and the tractor.

L'invention a aussi pour but de permettre un régla- ge précis de la force de déclenchement nécessaire pour la libération de l'outil en fonction de la dureté du terrain ou de la protection désirée pour lesd pièces travaillantes vulnérables, la possibilité de réglage pouvant s'étendre sur uno zone permettant de passer du blocage complet du dispositif jusqu'à son déclenchement sous la moindre sollicitation.  Another object of the invention is to allow precise adjustment of the tripping force necessary for the release of the tool as a function of the hardness of the ground or of the protection desired for vulnerable working parts, the possibility of adjustment being able to extend over a zone allowing to pass from the complete blocking of the device until its triggering under the slightest stress.

Le principe do l'invention consiste à monter l'out:i1 sur son support par un axe transversal d'articulation et à le maintenir en position de travail par l'interpesition, entre le support et l'outil, d'une liaison complémentaire assurée par un ensemble repliable de deux biellettes artiou- lées l'une à l'autre autour d'un axe transversal par une de leurs extrémités tandis que leurs extrémités opposées s'articulent respectivement au support et à l'outil en étant rappelées par des ressorts à la position de travail correspondant à une position d'extension maximale de l'ensemble des deux biellettes qui sont alors en alignement ou dans une position voisine réglable de façon qu'une résistance excessive opposée à l'avancement de l'outil provoque le repliage de cet ensemble des deux biellettes en permettant ainsi à l'outil d'échapper a l'obstacle. The principle of the invention consists in mounting the out: i1 on its support by a transverse articulation axis and in maintaining it in the working position by the interposition, between the support and the tool, of a complementary connection. provided by a folding assembly of two rods hinged to one another around a transverse axis by one of their ends while their opposite ends are articulated respectively to the support and to the tool by being recalled by springs in the working position corresponding to a position of maximum extension of the assembly of the two rods which are then in alignment or in a neighboring position adjustable so that excessive resistance opposed to the advancement of the tool causes the folding of this assembly of the two rods thus allowing the tool to escape the obstacle.

Four bien faire comprendre l'invention, on en décrira ci-après, a titre d'exemple, une forme d'exécution en référence au dessin annexé, dans lequel
la figure 1 est une vue de côté d'un outil équipé du dispositif selon l'invention, représenté en position de travail
la figure 2 est une vue correspondante montrant la position de l'outil après déclenchement ; et
les figures 3 et 4 sont des schémas montrant la commande de l'ensemble repliable sous l'action des forces qui lui sont appliquées.
To fully understand the invention, we will describe below, by way of example, an embodiment with reference to the accompanying drawing, in which
Figure 1 is a side view of a tool equipped with the device according to the invention, shown in the working position
Figure 2 is a corresponding view showing the position of the tool after tripping; and
Figures 3 and 4 are diagrams showing the control of the folding assembly under the action of the forces applied to it.

Sur les figures 1 et 2, on a indiqué en 1 un bti de l'appareil porteur à la partie supérieure duquel est fixé un support 2 portant l'articulation fixe 3 de ltensemble repliable des deux biellettes tandis qu'â la partie inférieure est fixée une chape 4 entre les deux ailes de laquelle s'articule autour d'un-axe transversal 5 la pièce de travail du sol, par exemple une dent 6 portant à son extrémité une pièce 7 d'attaque du sol. L'ensemble repliable se compose de deux biellettes 8 et 9 s'articulant l'une à l'autre par une extrémité sur un axe transversal 1Q.tandis que l'extrémité opposée de la biellette 8 s'articule sur l'axe fixe 3 et que l'extrémité opposée de la biellette 9 s'articule sur un axe transversal Il â la dent 6. In Figures 1 and 2, there is indicated in 1 a frame of the carrier device to the upper part of which is fixed a support 2 carrying the fixed articulation 3 of the folding assembly of the two rods while the lower part is fixed a yoke 4 between the two wings of which is articulated around a transverse axis 5 the soil working part, for example a tooth 6 carrying at its end a part 7 for attacking the soil. The folding assembly consists of two links 8 and 9 hinging to each other by one end on a transverse axis 1Q. While the opposite end of the link 8 is articulated on the fixed axis 3 and that the opposite end of the link 9 is articulated on a transverse axis II to the tooth 6.

Cet ensemble de biellettes 8-9 est retenu en extenson, dans l'exemple représenté au dessin, par deux ressorts de traction 12 accrochés entre un point d'attache 13 sur la pièce 2 et un point d'attache 14 sur la biellette 8. On comprend que, si l'ensemble repliable 8-9 se replie par déplacement de l'articulation 10 vers l'arrière (c'està-dire en sens contraire de l'avance de l'outil) contre l'action des ressorts 12, la dent 6 pivotera vers l'arrière et vers le haut en échappant à l'obstacle et en protégeant ainsi l'outil. le dispositif est conçu pourquecerepliage s'effectue sous l'action d'une force de déclenchement réglable appliquée à l'outil par la résistance du terrain ou par la présence d'un obstacle comme on l'expliquera ci-après. This set of links 8-9 is retained in extension, in the example shown in the drawing, by two tension springs 12 hooked between an attachment point 13 on the part 2 and an attachment point 14 on the link 8. It is understood that, if the folding assembly 8-9 folds back by displacement of the articulation 10 towards the rear (that is to say in the opposite direction of the advance of the tool) against the action of the springs 12 , tooth 6 will pivot backwards and upwards, escaping the obstacle and thus protecting the tool. the device is designed so that folding is carried out under the action of an adjustable tripping force applied to the tool by the resistance of the ground or by the presence of an obstacle as will be explained below.

La figure 1 montre le dispositif dans une position pour laquelle les trois axes transversaux parallèles 3-10-11 sont dans un même plan, c'est-a-dire que les trois articulations sont en alignement. La biellette 9 est munie d'une butée 15 qui agit sur la biellette 8 en ne permettant un repliage de l'ensemble des biellettes que dans un sens, par déplacement de l'articulation 10 vers l'arrière (c'est-à-dire la droite de la figure 1). Dans ces conditions un effort exercé par la dent 6 sur la biellette 9 par l'intermédiaire de l'articulation Il ne peut entrainer un repliage de 11 ensemble des deux biellettes 8-9 dont la position d'extension avec alignement des trois articulations peut être assurée par un très faible effort des ressorts 12. La figure 1 correspond ainsi au blocage complet. Figure 1 shows the device in a position for which the three parallel transverse axes 3-10-11 are in the same plane, that is to say that the three joints are in alignment. The link 9 is provided with a stop 15 which acts on the link 8 by allowing folding of the set of links only in one direction, by displacement of the articulation 10 towards the rear (that is to say say the right of figure 1). Under these conditions, a force exerted by the tooth 6 on the link 9 via the articulation It cannot cause a folding of 11 together of the two links 8-9 whose extension position with alignment of the three articulations can be ensured by a very low force of the springs 12. FIG. 1 thus corresponds to complete blocking.

Cependant, copformément à une caractéristique oom- plémentaire de l'invention, la butée 15 est réglable en étant réalisée par exemple parune vis qui est en prise aveo un taraudage de la biellette 9 et qui agit sur la face arrière de la biellette 8 de façon à permettre un désalignement initial des trois articulations 8-10-11 par déplacement vers l'arrière de l'articulation 10- en amorçant le repliage de l'ensemble des biellettes auquel s'opposent cependant les tensions des ressorts 12 tant que l'effort exercé par la dent 6 sur l'articulation Il n'atteint pas une certaine limite qui dépend de la tension des ressorts mais surtout de l'angle initial donné aux deux biellettes 8-9 car, plus l'inclinaison des deux biellettes l'une par rapport à l'autre est grande (C'est-à-dire plus l'ensemble de biellettes est replié initialement), plus l'effort de déclenchement nécessaire pour surmonter l'action des ressorts 12 sera faible. Cela apparat clairement d'après les figures 3 et 4 sur lesquelles on a indiqué en F1 la résistance opposée par le support à la biellette 8 et en
F2 l'effort exercé par la dent 6 sur la biellette 9 tandis qu'en R on a indiqué la force nécessaire à appliquer à l'articulation Il pour surmonter l'action de retenue des ressorts 12. Dans le cas de l'alignement des trois artiou lations (figure 3), les forces F1 et F2 en opposition ne donneront aucune résultante R. Dans ae cas de la figure 4 au contraire, les forces Fl et F2 nécessaires pour donner une force de repliage R seront d'autant plus faibles que l1angle initial dss deux biellettes sera plus fermé. Ainsi, en vissant la butée réglable 15, on pourra diminuer pro gressivement la force de déclenchement, c'est-à-dire la force qui doit être appliquée à la dent 6 pour produire le déclenchement.
However, in accordance with an additional characteristic of the invention, the stop 15 is adjustable by being produced for example by a screw which is engaged with a thread of the link 9 and which acts on the rear face of the link 8 so to allow an initial misalignment of the three articulations 8-10-11 by displacement towards the rear of the articulation 10- by initiating the folding of the assembly of the rods to which the tensions of the springs 12 are opposed as long as the effort exerted by tooth 6 on the joint It does not reach a certain limit which depends on the tension of the springs but especially on the initial angle given to the two links 8-9 because, the more the inclination of the two links one relative to the other is large (that is to say the more the set of rods is folded initially), the lower the release force necessary to overcome the action of the springs 12 will be low. This appears clearly from FIGS. 3 and 4 in which the resistance opposed by the support to the link 8 has been indicated in F1 and in
F2 the force exerted by the tooth 6 on the link 9 while in R the force necessary to be applied to the joint II has been indicated to overcome the retaining action of the springs 12. In the case of the alignment of the three articulations (figure 3), the forces F1 and F2 in opposition will not give any result R. In the case of figure 4 on the contrary, the forces Fl and F2 necessary to give a folding force R will be all the more weak that the initial angle of two links will be more closed. Thus, by screwing the adjustable stop 15, it will be possible to gradually decrease the triggering force, that is to say the force which must be applied to the tooth 6 to produce the triggering.

La figure 2 montre la position de déclenchement atteinte par la dent 6 et limitée par le contact du talon 16 de cette dent contre une butée fixe 17 du support. Figure 2 shows the trigger position reached by the tooth 6 and limited by the contact of the heel 16 of this tooth against a fixed stop 17 of the support.

Une caractéristique avantageuse du dispositif proposé consiste dans la facilité de réarmement de l'outil en position de travail, grâce à une disposition convenable du centre de gravité 18 de la dent pivotante par rapport à son axe d'articulation 5. En effet, le poids de la dent 6, qui s'exerce verticalement comme le montre la flèche de la figure 2, a tendance à ramener cette dent en position basse des qu'elle est soustraite à la résistance du terrain et de l'obstacle et il suffit donc de soulever l'ensemble de l'outil et de son support pour que la dent 6 reprenne sa position de travail, les ressorts 12 ayant été prévus pour assurer en fin de course le retournes trois articulations vers leurs positions d'alignement, le léger désalignement initial des articulations des deux bielles étant réglé par la position de la. An advantageous characteristic of the proposed device consists in the ease of resetting the tool in the working position, thanks to a suitable arrangement of the center of gravity 18 of the pivoting tooth relative to its axis of articulation 5. In fact, the weight tooth 6, which is exerted vertically as shown by the arrow in Figure 2, tends to bring this tooth in the low position as soon as it is removed from the resistance of the ground and the obstacle and it is therefore sufficient to lift the assembly of the tool and its support so that the tooth 6 returns to its working position, the springs 12 having been provided to ensure, at the end of the stroke, return three joints to their alignment positions, the slight initial misalignment joints of the two connecting rods being adjusted by the position of the.

butée 15.stop 15.

Le réarmement ci-dessus peut s'obtenir par exemple en prévoyant que l'axe d'articulation 5 est à distance du centre de gravité 18 au-dessus de lui et au voisinage de sa verticale quand.l'outil est en position de travail. The above reset can be obtained for example by providing that the hinge pin 5 is at a distance from the center of gravity 18 above it and in the vicinity of its vertical when the tool is in the working position. .

On comprendra que l'exemple d'exécution de l'in- vention, plus particulièrement décrit ci-dessus en référence au dessin annexé, n'a aucun caractère limitatif et mulon pourrait prévoir diverses modifications ou adjonctions sans s'écarter du cadre de l'invention définie par les revendications annexées. It will be understood that the example of execution of the invention, more particularly described above with reference to the appended drawing, has no limiting character and mulon could provide various modifications or additions without departing from the scope of the invention defined by the appended claims.

Claims (4)

R E V E N D I C A T I O N SR E V E N D I C A T I O N S 1. Dispositif de déclenchement automatique adapta ble à des outils de travail du sol montés sur un tracteur ou sur un appareil porté ou tiré par tracteur, comprenant un axe d'articulation fixe transversal de l'outil sur son support, caractérisé par une liaison supplémentaire entre l'outil (6) et le support (2) constituée par un ensemble repliable de deux biellettes (8-9) articulées l'une à l'autre par une extrémité autour d'une articulation à axe transversal (10) et articulées par leurs extrémités opposées respectivement au support autour d'un axe transversal fixe (3) et à l'outil autour d'un autre axe transversal (11). 1. Automatic release device adaptable to tillage tools mounted on a tractor or on a tractor-mounted or tractor-mounted device, comprising a fixed transverse articulation axis of the tool on its support, characterized by an additional connection between the tool (6) and the support (2) constituted by a folding assembly of two links (8-9) articulated to each other by one end around a joint with transverse axis (10) and articulated by their ends opposite respectively to the support around a fixed transverse axis (3) and to the tool around another transverse axis (11). 2. Dispositif de déclenchement automatique selon la revendication 1, dans lequel l'ensemble repliable est maintenu en position d'extension par des ressorts (12).  2. Automatic triggering device according to claim 1, in which the folding assembly is held in the extended position by springs (12). 3. Dispostifi de déclenchement automatique selon la revendication I ou la revendication 2, caractérisé en outre par une butée réglable (15) portée par l'une des biellettes (9) et agissant sur l'autre (8) en limitant la position d'extension maximale de façon a permettre le réglage de la force opposée à l'avance de l'outil qui est nécessaire pour provoquer le déclaenchement. 3. Automatic triggering device according to claim I or claim 2, further characterized by an adjustable stop (15) carried by one of the rods (9) and acting on the other (8) by limiting the position of maximum extension so as to allow the adjustment of the force opposite to the advance of the tool which is necessary to cause the triggering. 4. Dispositif de déclenchement selon l'une quelconque des revendications précédentes, caractérisé e plus par le fait que l'axe d'articulation (5) de l'outil (6) est situé à distance au centre de gravité (18) de cet outil, au-dessus de ce centre de gravité et au voisinage de sa verticale, quand l'outil est en position de travail, de façon qu'après d6clenchement et relèvement de l'outil, celui-ci ait tendance à reprendre sa position de travail quand il est soustrait à la résistance du terrain par soulèvement du support de l'outil. 4. Trigger device according to any one of the preceding claims, further characterized in that the articulation axis (5) of the tool (6) is located at a distance from the center of gravity (18) of this tool, above this center of gravity and in the vicinity of its vertical, when the tool is in the working position, so that after switching on and raising the tool, it tends to return to its work when it is removed from the resistance of the ground by lifting the support of the tool.
FR8008759A 1980-04-18 1980-04-18 Ground-working implement automatic release mechanism - has pair of toggle links between implement and mounting and spring biassing tine toward extended position Granted FR2483733A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8008759A FR2483733A1 (en) 1980-04-18 1980-04-18 Ground-working implement automatic release mechanism - has pair of toggle links between implement and mounting and spring biassing tine toward extended position

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8008759A FR2483733A1 (en) 1980-04-18 1980-04-18 Ground-working implement automatic release mechanism - has pair of toggle links between implement and mounting and spring biassing tine toward extended position

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FR2483733A1 true FR2483733A1 (en) 1981-12-11
FR2483733B3 FR2483733B3 (en) 1984-01-20

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8400214A (en) * 1984-01-24 1985-08-16 Oldenhuis Bv Tractor-mounted leaf-puller implement - has one roller in pair of spring-loaded arm
US4609051A (en) * 1984-08-01 1986-09-02 Allied Products Corporation Trip shank mechanism
US5318289A (en) * 1990-12-05 1994-06-07 Gared Sports, Inc. Breakover basketball goal release mechanism

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8400214A (en) * 1984-01-24 1985-08-16 Oldenhuis Bv Tractor-mounted leaf-puller implement - has one roller in pair of spring-loaded arm
US4609051A (en) * 1984-08-01 1986-09-02 Allied Products Corporation Trip shank mechanism
US5318289A (en) * 1990-12-05 1994-06-07 Gared Sports, Inc. Breakover basketball goal release mechanism

Also Published As

Publication number Publication date
FR2483733B3 (en) 1984-01-20

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