FR2560143A1 - Spanning tractor - Google Patents
Spanning tractor Download PDFInfo
- Publication number
- FR2560143A1 FR2560143A1 FR8402838A FR8402838A FR2560143A1 FR 2560143 A1 FR2560143 A1 FR 2560143A1 FR 8402838 A FR8402838 A FR 8402838A FR 8402838 A FR8402838 A FR 8402838A FR 2560143 A1 FR2560143 A1 FR 2560143A1
- Authority
- FR
- France
- Prior art keywords
- tractor
- seat
- cylinder
- straddle
- driver
- 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
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D49/00—Tractors
- B62D49/06—Tractors adapted for multi-purpose use
- B62D49/0607—Straddle tractors, used for instance above vine stocks, rows of bushes, or the like
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Guiding Agricultural Machines (AREA)
Abstract
Description
La présente invention est relative à un tracteur enjambeur. The present invention relates to a straddle tractor.
On sait que les roues avant directrices d'un tracteur agricole sont portées par les extrémités d'un palonnier de façon à ce que les axes des roues puissent se déplacer dans un plan transversal audit tracteur,vertical ou sensiblement vertical, pour tenir compte des irrégularités du terrain. It is known that the front steering wheels of an agricultural tractor are carried by the ends of a lifter so that the axes of the wheels can move in a plane transverse to said tractor, vertical or substantially vertical, to take account of irregularities ground.
Dans les tracteurs enjambeurs le palonnier doit être situé relativement haut, environ deux mètres du sol, et le conducteur doit être placé au-dessus de façon à ce que sa vision ne soit pas gênée par ledit palonnier.De ce fait, le centre de gravité de l'ensemble est situé bien au-dessus du sol et cela nuit à la stabilité du véhicule. In straddle tractors the lifter should be located relatively high, about two meters from the ground, and the driver should be placed above it so that his vision is not obstructed by said spreader. As a result, the center of gravity of the assembly is located well above the ground and this affects the stability of the vehicle.
Par ailleurs, si on prévoit des arceaux de protection du conducteur on surélève d'autant le centre de gravité. Furthermore, if the driver's protective arches are provided, the center of gravity is raised as much.
A cela s'ajoute le fait qu'il arrive souvent que des plantes à traiter,maïs par exemple, atteignent ou dépassent légèrement la hauteur de deux mètres et heurtent le palonnier. To this is added the fact that it often happens that plants to be treated, corn for example, reach or slightly exceed the height of two meters and strike the lifter.
Ce frottement continu engendre une projection de particules qui gênent considérablement la vision du conducteur.This continuous friction generates a projection of particles which considerably impede the driver's vision.
La présente invention,qui remédie à ces inconvénients,est remarquable en ce que le siège du conducteur est situé en avant du palonnier précité par rapport au sens d'avancement et bien au-dessous de ce dernier,un espace suffisant pour permettre le passage d'une rangée de plantes étant prévu entre le siège et la jambe correspondante du véhicule. The present invention, which overcomes these drawbacks, is remarkable in that the driver's seat is located in front of the aforementioned lifting beam relative to the direction of travel and well below the latter, sufficient space to allow the passage of 'a row of plants being provided between the seat and the corresponding leg of the vehicle.
D'autres caractéristiques ressortiront mieux par la description qui va suivre faite en se référant aux dessins schématiques annexés à titre d'exemple indicatif seulement et dans lesquels:
La figure 1 est une vue de côté d'un tracteur conforme à l'invention ;
La figure 2 est la vue de dessus de la figure 1
La figure 3 est la vue de gauche de la figure 1
La figure 4 est une vue partielle en perspective montrant un détail de réalisation concernant la commande des roues avant;
La figure 5 est une vue partielle, en coupe, d'un détail de réalisation;
La figure 6 est une vue très schématique illustrant un mode de commande des roues avant.Other characteristics will emerge more clearly from the description which follows, made with reference to the schematic drawings annexed by way of indicative example only and in which:
Figure 1 is a side view of a tractor according to the invention;
Figure 2 is the top view of Figure 1
Figure 3 is the left view of Figure 1
Figure 4 is a partial perspective view showing a detail of embodiment concerning the control of the front wheels;
Figure 5 is a partial view, in section, of an embodiment detail;
Figure 6 is a very schematic view illustrating a control mode of the front wheels.
En se reportant aux dessins, on voit que le châssis 1 du tracteur affecte, vu par bout, la forme d'un U renversé dont la partie médiane 2 supporte une plateforme 3 par l'entremise de tirants 4. Referring to the drawings, it can be seen that the chassis 1 of the tractor assumes, seen from the end, the shape of an inverted U, the middle part 2 of which supports a platform 3 by means of tie rods 4.
La plateforme 3 supporte le moteur, schématisé en 5,ei le siège 6 du conducteur. The platform 3 supports the engine, shown diagrammatically at 5, and the driver's seat 6.
La largeur de la plateforme 3 est bien inférieure à la distance séparant les branches 7 du châssis 1 , ou jambes du tracteur, de façon à ménager entre elle et lesdites jambes un passage de la rangée correspondante de plantes P ( figure 3). The width of the platform 3 is much less than the distance separating the branches 7 from the chassis 1, or legs of the tractor, so as to provide between it and said legs a passage of the corresponding row of plants P (FIG. 3).
Chacune des roues 8 avant est située à l'extrémité d'un levier 9 articulé par son autre extrémité, par un arbre 10, à la partie inférieure de la jambe correspondante du châssis, ledit levier s'étendant en 11 au-delà de son axe d'articulation et étant relié, par l'entremise d'une articulation à rotule 12 d'un type connu, à l'extrémité inférieure d'une tige 13 reliée elle-même, par une articulation à rotule 14, à l'extrémité d'un palonnier 15 dont les paliers 16 de son arbre d'articulation 17 sont portés par la partie 2 médiane du châssis. Each of the front wheels 8 is situated at the end of a lever 9 articulated by its other end, by a shaft 10, at the lower part of the corresponding leg of the chassis, said lever extending at 11 beyond its hinge pin and being connected, by means of a ball joint 12 of a known type, to the lower end of a rod 13 connected itself, by a ball joint 14, to the end of a spreader 15 whose bearings 16 of its hinge shaft 17 are carried by the middle part 2 of the chassis.
Chacune des roues 18 arrière est portée par l'extrémité libre d'un longeron 19 prolongeant le châssis vers l'arrière. Each of the rear wheels 18 is carried by the free end of a beam 19 extending the chassis towards the rear.
De cette façon, il est possibleasans nuire à la stabilité du véhicule, d'augmenter la hauteur du passage offert aux plantes. In this way, it is possible without affecting the stability of the vehicle, to increase the height of the passage offered to the plants.
Par ailleurs, la stabilité du véhicule se trouve augmentée puisque sa masse principale,constituée par la piateforme 3 et ce qu'elle supporte, peut être placée très près du sol. Furthermore, the stability of the vehicle is increased since its main mass, constituted by the platform 3 and what it supports, can be placed very close to the ground.
I1 faut aussi signaler que la tête du conducteur se trouvant bien au-dessous du niveau de la partie médiane du châssis, celui-ci se comporte comme un arceau de protection lors d'un renversement accidentel du tracteur. It should also be pointed out that the driver's head being well below the level of the middle part of the chassis, it behaves like a roll bar in the event of an accidental overturning of the tractor.
Dans le cas où le véhicule est équipé de moteurs hydrauliques (non représentés au niveau des roues I8), les leviers 9 peuvent avantageusement être utilisés pour constituer des réservoirs d'huile. In the case where the vehicle is equipped with hydraulic motors (not shown at the level of the wheels I8), the levers 9 can advantageously be used to constitute oil tanks.
I1 est déjà connu de commander l'une des roues directrices d'un tracteur à l'aide d'un vérin hydraulique à double effet tel que montré sur la figure 4. A cet effet, on envoie à partir d'un dispositif de commande d'un type connu, un fluide hydraulique sur l'une ou l'autre face du piston du vérin.Dans ce cas, on est obligé de coupler l'autre roue à l'aide d'une tige de façon à réaliser un parallélogramme de direction. It is already known to control one of the steered wheels of a tractor using a double-acting hydraulic cylinder as shown in FIG. 4. To this end, it is sent from a control device of a known type, a hydraulic fluid on one or the other side of the piston of the jack. In this case, it is necessary to couple the other wheel using a rod so as to produce a parallelogram of management.
Un tel dispositif ne peut pas être utilisé sur un tracteur enjambeur puisque l'espace compris éntre les roues doit être totalement libre. Such a device cannot be used on a straddle tractor since the space between the wheels must be completely free.
Selon l'invention, on utilise deux vérins 20a et 20b, identiques, reliés entre eux,et un dispositif inverseur 21 usuel commandé par le volant 22 de la façon montrée sur la figure 6. According to the invention, two identical cylinders 20a and 20b are used, connected to each other, and a conventional reversing device 21 controlled by the steering wheel 22 in the manner shown in FIG. 6.
Le dispositif inverseur 21 peut envoyer du fluide sous pressions dans des chambres 23 délimitées chacune par le fond du vérin et son piston, tandis que les chambres 24 délimi tées par le piston et l'autre fond du vérin sont reliées par une canalisation 25. The reversing device 21 can send fluid under pressure into chambers 23 each delimited by the bottom of the jack and its piston, while the chambers 24 delimited by the piston and the other bottom of the jack are connected by a pipe 25.
Bien entendu, la présente invention ne se limite pas au mode de réalisation décrit et représenté mais s'étend, au contraire, à toutes variantes de formes et dimensions. Of course, the present invention is not limited to the embodiment described and shown but extends, on the contrary, to all variants of shapes and dimensions.
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8402838A FR2560143B1 (en) | 1984-02-24 | 1984-02-24 | STAKEHOLDER TRACTOR |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8402838A FR2560143B1 (en) | 1984-02-24 | 1984-02-24 | STAKEHOLDER TRACTOR |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2560143A1 true FR2560143A1 (en) | 1985-08-30 |
FR2560143B1 FR2560143B1 (en) | 1989-12-08 |
Family
ID=9301366
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8402838A Expired FR2560143B1 (en) | 1984-02-24 | 1984-02-24 | STAKEHOLDER TRACTOR |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2560143B1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2694535A1 (en) * | 1992-08-07 | 1994-02-11 | Bobard Jeune Sa Ets | Motor vehicle with hydraulic independent steering control - has independently steered front wheels, each associated with hydraulic control circuit and linked via central pressure control mechanism |
US5335739A (en) * | 1992-12-30 | 1994-08-09 | Ian Pieterse | Agricultural vehicle |
FR2820709A1 (en) * | 2001-02-15 | 2002-08-16 | Gehmo | Self-propelled quadricycle comprises two side parts which carry at rear articulation system for portico connected to chassis by shock absorbing system supporting two independent steering wheels |
FR2820708A1 (en) * | 2001-02-15 | 2002-08-16 | Grosjean Rene Viticole | Self-propelled quadricycle comprises arc-shaped chassis with side and central parts delimiting driving compartment, central part carries extension supporting steering handle and side parts carry independent steering wheels |
WO2011001087A1 (en) | 2009-07-01 | 2011-01-06 | Sarl Grosjean Rene Viticole | Self-propelled high-clearance vehicle |
FR3131895A1 (en) | 2022-01-19 | 2023-07-21 | Grv | Straddle agricultural vehicle with offset left rear undercarriage |
-
1984
- 1984-02-24 FR FR8402838A patent/FR2560143B1/en not_active Expired
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2694535A1 (en) * | 1992-08-07 | 1994-02-11 | Bobard Jeune Sa Ets | Motor vehicle with hydraulic independent steering control - has independently steered front wheels, each associated with hydraulic control circuit and linked via central pressure control mechanism |
US5335739A (en) * | 1992-12-30 | 1994-08-09 | Ian Pieterse | Agricultural vehicle |
FR2820709A1 (en) * | 2001-02-15 | 2002-08-16 | Gehmo | Self-propelled quadricycle comprises two side parts which carry at rear articulation system for portico connected to chassis by shock absorbing system supporting two independent steering wheels |
FR2820708A1 (en) * | 2001-02-15 | 2002-08-16 | Grosjean Rene Viticole | Self-propelled quadricycle comprises arc-shaped chassis with side and central parts delimiting driving compartment, central part carries extension supporting steering handle and side parts carry independent steering wheels |
WO2011001087A1 (en) | 2009-07-01 | 2011-01-06 | Sarl Grosjean Rene Viticole | Self-propelled high-clearance vehicle |
FR3131895A1 (en) | 2022-01-19 | 2023-07-21 | Grv | Straddle agricultural vehicle with offset left rear undercarriage |
Also Published As
Publication number | Publication date |
---|---|
FR2560143B1 (en) | 1989-12-08 |
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ST | Notification of lapse |