FR2591985A1 - Improved steering system for a self-propelled vehicle comprising at least two steering axles - Google Patents
Improved steering system for a self-propelled vehicle comprising at least two steering axles Download PDFInfo
- Publication number
- FR2591985A1 FR2591985A1 FR8519108A FR8519108A FR2591985A1 FR 2591985 A1 FR2591985 A1 FR 2591985A1 FR 8519108 A FR8519108 A FR 8519108A FR 8519108 A FR8519108 A FR 8519108A FR 2591985 A1 FR2591985 A1 FR 2591985A1
- Authority
- FR
- France
- Prior art keywords
- mode
- steering
- modification
- wheels
- speed
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D7/00—Steering linkage; Stub axles or their mountings
- B62D7/06—Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins
- B62D7/14—Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins the pivotal axes being situated in more than one plane transverse to the longitudinal centre line of the vehicle, e.g. all-wheel steering
- B62D7/15—Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins the pivotal axes being situated in more than one plane transverse to the longitudinal centre line of the vehicle, e.g. all-wheel steering characterised by means varying the ratio between the steering angles of the steered wheels
- B62D7/1509—Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins the pivotal axes being situated in more than one plane transverse to the longitudinal centre line of the vehicle, e.g. all-wheel steering characterised by means varying the ratio between the steering angles of the steered wheels with different steering modes, e.g. crab-steering, or steering specially adapted for reversing of the vehicle
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Steering-Linkage Mechanisms And Four-Wheel Steering (AREA)
Abstract
Description
Certains véhicules automoteurs possèdent deux essieux directeurs, c'est le cas dans le dispositif décrit dans le brevet NO 2369139 du 26 Octobre 1976 au nom des déposants. Certain self-propelled vehicles have two steering axles, this is the case in the device described in patent NO 2369139 of October 26, 1976 in the name of the applicants.
Le but de la présente invention est de proposer des moyens de contrôle plus perfectionnés et d'utilisation plus simple et plus sure. The object of the present invention is to provide more sophisticated means of control and simpler and safer use.
Le système s'applique généralement aux véhicules automoteurs, et en particulier aux véhicules porteurs de pulvérisateurs. The system generally applies to self-propelled vehicles, and in particular to vehicles carrying sprayers.
Pour ceux-ci, l'utilisation de quatre roues directrices présente plusieurs avantages. For these, the use of four steering wheels has several advantages.
1 Dans les virages en bout de champ, le rayon est réduit en braquant les roues arrières en opposition des roues avant. 1 When turning at the headland, the radius is reduced by turning the rear wheels in opposition to the front wheels.
20 Dans les pentes transversales, la possibilité d'orienter les roues arrières en parallèle des roues avant permet d'assurer une progression en ligne droite quelle que soit la pente. 20 On transverse slopes, the possibility of orienting the rear wheels in parallel with the front wheels ensures progression in a straight line regardless of the slope.
30 Naturellement, sur route et dans les grandes vitesses de déplacement il est préférable de n'utiliser que les seules roues avant pour la direction. 30 Of course, on the road and at high travel speeds it is preferable to use only the front wheels only for steering.
Ces trois modes de direction sont connus. These three steering modes are known.
Dans les systèmes connus, la liaison entre les directions des essieux avant et arrière est généralement assurée mécaniquement ou hydrauliquement, ce qui rend très difficile le passage d'un mode à un autre, puisqu'il faut garder le synchronisme, ou le blocage des roues arrières pour la route en position centrée. In known systems, the connection between the directions of the front and rear axles is generally ensured mechanically or hydraulically, which makes it very difficult to switch from one mode to another, since it is necessary to keep the synchronism, or the locking of the wheels. rear for the road in centered position.
Dans un système plus évolué, l'orientation des roues avant et arrière est contrôlée électroniquement mais le choix se fait uniquement par une commande manuelle, ce qui rend difficile les manoeuvres pour obtenir les virages courts et il n'y a aucune sécurité automatique et sûre, pour bloquer les roues arrière aux grandes vitesses. In a more advanced system, the orientation of the front and rear wheels is electronically controlled, but the choice is made only by manual control, which makes it difficult to maneuver to obtain short turns and there is no automatic and safe safety. , to lock the rear wheels at high speeds.
Les perfectionnements suivant l'invention consistent d'une part à compléter le sélecteur de mode de direction par une commande - par exemple une pédale, qui temporairement fait passer en mode " opposition pour faciliter les virages en en réduisant le rayon et en faisant passer sensiblement les roues arrières dans la trace des roues avant, le mode antérieur choisi étant ensuite rétabli à la suppression de l'action et d'autre part pour assurer une plus grande facilité d'emploi, et une plus grande sureté, une autre commande, liée à la vitesse, oblige la direction à rester en position - roues arrière fixes et centrées, seules les roues avant restant directrices. The improvements according to the invention consist, on the one hand, in supplementing the direction mode selector with a command - for example a pedal, which temporarily switches to "opposition mode to facilitate cornering by reducing the radius and making it pass substantially the rear wheels in the track of the front wheels, the previous chosen mode then being restored when the action is suppressed and on the other hand to ensure greater ease of use, and greater safety, another command, linked at speed, forces the steering to remain in position - rear wheels fixed and centered, only the front wheels remaining steered.
Cette commande peut etre réalisée, par exemple, soit à partir du levier de changement de gammes de vitesse, soit à partir du dépassement d'une certaine vitesse d'avancement déterminée. This command can be carried out, for example, either from the gear shift lever, or from exceeding a certain determined forward speed.
La description et le schéma annexé, donnés à titre explicatif non limitatif, feront mieux comprendre les particularités et avantages de l'invention. The description and the appended diagram, given by way of nonlimiting explanation, will make the features and advantages of the invention better understood.
En 1 et 2 sont représentés les capteurs qui saisissent les informations sur l'orientation des roues avant 1 et arrière 2. Ils sont alimentés par les liaisons 3 et 4 et envoient leurs informations par les liaisons 5 et 6. La liaison 5 est reliée directement au comparateur 7 alors que la liaison 6 est reliée à travers différents contacts à la boite de programmation représentée schématiquement en 8. In 1 and 2 are represented the sensors which capture the information on the orientation of the front wheels 1 and rear 2. They are supplied by the connections 3 and 4 and send their information by the connections 5 and 6. The connection 5 is connected directly to comparator 7 while the link 6 is connected through different contacts to the programming box shown diagrammatically at 8.
Schématiquement, le programmateur 8 comprend un sélecteur qui permet de choisir un des trois modes à savoir
a - roues parallèles - pour terrain en pente transversale
b - roues avant directrices - roues arrière bloquées, centrées,
pour la route ou le travail à plat.Schematically, the programmer 8 includes a selector which makes it possible to choose one of the three modes, namely
a - parallel wheels - for cross-slope terrain
b - front steering wheels - rear wheels locked, centered,
for road or flat work.
c - roues en opposition pour les virages courts
La liaison 6 est schématiquement représentée aboutissant à ce sélecteur 9 mais la liaison 6 comporte en outre un premier inverseur 10 et ensuite un deuxième 11 - avant d'atteindre le programmateur 8 par l'entrée 12.c - wheels in opposition for short turns
The link 6 is schematically shown leading to this selector 9 but the link 6 also comprises a first inverter 10 and then a second 11 - before reaching the programmer 8 via the input 12.
L'inverseur 10 est commandé par le levier 13 qui commande les gammes haute et basse. Lorsque le levier est en - H - (gamme haute) pour les grandes vitesses, l'inverseur 10 bascule et la liaison 6, par la liaison 14 arrive dans le programmateur 8 par l'entrée 15 qui commande la disposition b - roues arrière bloquées - et centrées - roues avant seules directrices. The inverter 10 is controlled by the lever 13 which controls the high and low ranges. When the lever is in - H - (high range) for high speeds, the inverter 10 switches and link 6, via link 14 arrives in the programmer 8 via input 15 which controls the arrangement b - rear wheels locked - and centered - front steering wheels only.
L'inverseur 11 est commandé par une pédale 16 et conduit la liaison 6, par la liaison 17, vers la borne 12 qui commande l'orientation roues " en opposition " pour virage court. The reverser 11 is controlled by a pedal 16 and leads the link 6, via the link 17, to the terminal 12 which controls the orientation of the wheels "in opposition" for short turns.
Comme l'inverseur 10 du levier 13 est le premier, c'est lui qui a la priorité, une action sur la pédale 16 de l'inverseur 11 n'aura d'effet que si le levier 13 est en gamme basse - B
A la sortie du comparateur 7, deux liaisons 18 et 19 conduisent aux électro-aimants 20 et 21 qui actionnent l'électrovalve 22 qui conduit le fluide sous pression de la pompe 23 à l'une ou l'autre chambre du vérin 24, commandant de façon connue l'orientation des roues arrière dans un sens ou dans l'autre. As the inverter 10 of the lever 13 is the first, it is he who has priority, an action on the pedal 16 of the inverter 11 will have effect only if the lever 13 is in the low range - B
At the output of the comparator 7, two connections 18 and 19 lead to the electromagnets 20 and 21 which actuate the solenoid valve 22 which conducts the fluid under pressure from the pump 23 to one or the other chamber of the jack 24, controlling in known manner the orientation of the rear wheels in one direction or the other.
La direction de l'essieu avant, non représenté, est assurée de façon connue par un volant et un circuit indépendant. The steering of the front axle, not shown, is provided in a known manner by a steering wheel and an independent circuit.
On comprend ainsi qu'une action sur la pédale 16 fait passer temporairement le mode de braquage, quel que soit le mode choisi par le sélecteur 9, en position virage court - 8.C et qu'une action sur le levier de vitesse 13 a la priorité sur toute information venant soit du sélecteur 9 soit de la pédale 16, et commande le mode 8 - b roues arrières centrées et bloquées, roues avant seules directrices. It is thus understood that an action on the pedal 16 temporarily switches the steering mode, whatever the mode chosen by the selector 9, into the short turn position - 8.C and that an action on the gear lever 13 a priority over any information coming either from the selector 9 or from the pedal 16, and controls the mode 8 - b rear wheels centered and locked, front wheels only steerable.
Si l'action sur la pédale 16 cesse, ou si levier 13 est ramené en B, on retrouve le mode choisi antérieurement. If the action on the pedal 16 ceases, or if lever 13 is brought back to B, the mode chosen previously is found.
Pour la compréhension, il a été représenté des inverseurs mecaniques 10 et 11, mais naturellement, toutes ces fonctions (capteurs 1 et 2, programmateur 8, inverseurs 10 et 11,) peuvent etre réalisés électroniquement, le mode d'action restant semblable. De même, il est aussi possible à partir de la détection du dépassement d'une vitesse d'avancement définie, de réaliser l'action de l'inverseur 11. For understanding, mechanical inverters 10 and 11 have been shown, but naturally, all these functions (sensors 1 and 2, programmer 8, inverters 10 and 11,) can be performed electronically, the mode of action remaining similar. Similarly, it is also possible, from the detection of the exceeding of a defined forward speed, to carry out the action of the inverter 11.
Naturellement, tous autres équivalents techniques rentrent dans le cadre du sujet de cette invention. Naturally, all other technical equivalents fall within the scope of the subject of this invention.
Claims (1)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8519108A FR2591985B3 (en) | 1985-12-20 | 1985-12-20 | IMPROVED STEERING SYSTEM FOR A MOTOR VEHICLE HAVING AT LEAST TWO STEERING AXLES |
DE8686402875T DE3685423D1 (en) | 1985-12-20 | 1986-12-19 | STEERING DEVICE FOR SELF-DRIVING VEHICLES WITH AT LEAST TWO STEERING AXLES. |
EP19860402875 EP0228962B1 (en) | 1985-12-20 | 1986-12-19 | Steering system for an automotive vehicle comprising at least two steering axles |
DK621586A DK169645B1 (en) | 1985-12-20 | 1986-12-22 | Directional steering system for cars with at least two steering axles |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8519108A FR2591985B3 (en) | 1985-12-20 | 1985-12-20 | IMPROVED STEERING SYSTEM FOR A MOTOR VEHICLE HAVING AT LEAST TWO STEERING AXLES |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2591985A1 true FR2591985A1 (en) | 1987-06-26 |
FR2591985B3 FR2591985B3 (en) | 1988-02-26 |
Family
ID=9326115
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8519108A Expired FR2591985B3 (en) | 1985-12-20 | 1985-12-20 | IMPROVED STEERING SYSTEM FOR A MOTOR VEHICLE HAVING AT LEAST TWO STEERING AXLES |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2591985B3 (en) |
-
1985
- 1985-12-20 FR FR8519108A patent/FR2591985B3/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR2591985B3 (en) | 1988-02-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
FR2495088A1 (en) | STEERING SYSTEM FOR FOUR-WHEELED VEHICLES HAVING REAR WHEEL CONTROL IN ACCORDANCE WITH VEHICLE MOVEMENT | |
CA2621840C (en) | Ground steering management process for an aircraft | |
FR2543093A1 (en) | DEVICE FOR CONTROLLING THE STEERING OF FRONT WHEELS OF A FOUR-WHEEL DRIVE VEHICLE | |
DE102012216651B4 (en) | Switching control / regulating device | |
CH660711A5 (en) | Device for automatically controlling the steering of an articulated vehicle | |
FR2701443A1 (en) | Control device, in particular steering for motor vehicles. | |
FR2602724A1 (en) | DEVICE FOR THE AUTOMATIC CHANGE OF POSITION OR ADJUSTMENT OF FUNCTIONAL ASSEMBLIES OF A MOTOR VEHICLE | |
FR2750367A1 (en) | DEVICE AND METHOD FOR AUTOMATICALLY CONTROLLING DIFFERENTIAL BLOCKING ON A MOTOR VEHICLE | |
EP0928740A1 (en) | Brake device for a set of aircraft wheels | |
FR2576271A1 (en) | STEERING DEVICE FOR FRONT AND REAR WHEELS | |
FR2608530A1 (en) | VEHICLE WITH FOUR DRIVE WHEELS, IN PARTICULAR AGRICULTURAL TRACTOR, WITH TRANSMISSION ADAPTED FOR EXECUTING GREEN TURNS | |
CA2349770C (en) | Electric control system for aircraft rudder | |
FR2591985A1 (en) | Improved steering system for a self-propelled vehicle comprising at least two steering axles | |
FR2810608A1 (en) | BRAKING DEVICE FOR A MOTOR VEHICLE | |
FR2591958A1 (en) | DEVICE FOR AUTOMATICALLY LOCKING THE DISTRIBUTION BOX OF A MOTORIZED VEHICLE | |
EP0228962B1 (en) | Steering system for an automotive vehicle comprising at least two steering axles | |
FR2547260A1 (en) | VEHICLE STEERING CONTROL DEVICE | |
JPH0826170A (en) | Bicycle with automatic trasmission | |
FR3097832A1 (en) | Steering system for an agricultural vehicle with reverse direction of travel by lever | |
FR2605579A1 (en) | System for slaving the steering of one axle to that of another axle of a self-propelled vehicle, particularly for agriculture use | |
FR2833522A1 (en) | Three wheeled motorized vehicle has front wheels connected to chassis by variable path connection controlled by control means connected to vehicle dynamic behavior analysis means | |
FR2632263A1 (en) | STEERING DEVICE ON THE FOUR WHEELS OF A MOTOR VEHICLE | |
WO2001036261A1 (en) | Semiautomatic manual control device for selecting gears of a self-propelled vehicle with handlebars and vehicle equipped with same | |
EP1534567A1 (en) | Acceleration and braking control device for vehicle | |
FR2712540A1 (en) | Power assisted clutch mechanism for manual gearbox car |