WO1993014369A1 - Pivoting tray device and workshop equipment provided with such device - Google Patents

Pivoting tray device and workshop equipment provided with such device Download PDF

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Publication number
WO1993014369A1
WO1993014369A1 PCT/FR1993/000002 FR9300002W WO9314369A1 WO 1993014369 A1 WO1993014369 A1 WO 1993014369A1 FR 9300002 W FR9300002 W FR 9300002W WO 9314369 A1 WO9314369 A1 WO 9314369A1
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WO
WIPO (PCT)
Prior art keywords
fixed support
movable plate
translation
plate
axis
Prior art date
Application number
PCT/FR1993/000002
Other languages
French (fr)
Inventor
Alain Lepetit
Original Assignee
Alain Lepetit
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 Alain Lepetit filed Critical Alain Lepetit
Publication of WO1993014369A1 publication Critical patent/WO1993014369A1/en

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
    • G01B11/275—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes for testing wheel alignment
    • G01B11/2755—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes for testing wheel alignment using photoelectric detection means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D21/00—Measuring or testing not otherwise provided for
    • G01D21/02—Measuring two or more variables by means not covered by a single other subclass
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B2210/00—Aspects not specifically covered by any group under G01B, e.g. of wheel alignment, caliper-like sensors
    • G01B2210/10—Wheel alignment
    • G01B2210/22—Wheels in a state of motion supported on rollers, rotating platform or other structure substantially capable of only one degree of rotational freedom

Definitions

  • the present invention relates to devices with pivoting plates and workshop equipment provided with such devices.
  • the invention relates in particular to the application of such devices or equipment to the measurement of the steering angles of a vehicle provided with steered wheels.
  • REPLACEMENT SHEET document presents a device with a horizontal swivel plate intended to receive a steering wheel.
  • ___ tray is mounted mobile on a fixed support with possibility of free pivoting and limited movement 5 in its own plane.
  • the pivot axis of this plate is connected to an angular sensor ensuring the measurement of the steering angle.
  • This sensor is carried by an arm associated with the mobile plate and accompanying the latter in its translation movements without undergoing its pivoting movements.
  • movable arm is equipped with a detection member arranged opposite a fixed range having physical characteristics, for example: electrical conductivity, reflective power, etc.
  • This detection device is connected to an electrical circuit controlling a signaling device
  • Such devices overcome the problem associated with driving the front axle of the vehicle by allowing the plate to translate into its own plane and reduce the number of trips.
  • the object of the present invention is to remedy the drawbacks mentioned above by proposing a device of the type described in FR-A-2 619 443 offering better general ergonomics and above all the possibility of blocking the movable plate in translation automatically and / or remotely controllable.
  • a movable plate device intended to receive a steering wheel of a vehicle, comprising a fixed support crossed by a fixed axis supporting the freely movable plate in rotation relative to the fixed support around a parallel axis of rotation. to the fixed and mobile axis in translation relative to the fixed support in the plane of the mobile plate, which translation is limited in amplitude by the arrangement of the mobile plate on the fixed support; the invention further provides automatic and / or remote-controlled means for blocking in translation the movable plate during the phases of raising and lowering of the vehicle wheel respectively on or from the device.
  • the device according to the invention also comprises means for detecting and measuring the angular position of the movable plate relative to the fixed support; and means for detecting the translational position of the plate relative to the fixed support.
  • the automatic and / or remotely controllable means for blocking in translation the movable plate comprise a crown mounted integral in translation with the movable plate, movable stop means capable of being placed in contact with the crown to block it according to at least three radial directions, or to be distant from the crown to release it in translation and from the motor means for activating these mobile stop means between their two extreme positions.
  • REPLACEMENT SHEET The invention also relates to such a device comprising in combination all or part of the characteristics mentioned above or below.
  • the invention also relates to workshop equipment for controlling the steering angles of the vehicle comprising two devices as described above, each intended for a steering wheel of the vehicle, an electronic processing and display console for results, and a remote control. to control all control operations.
  • FIG. 1 is a schematic view in staged section of a swivel tray device in a preferred embodiment of the invention
  • Figure 2 is a schematic sectional view of Figure 1 along line II.II;
  • Figure 3 is a schematic sectional view of Figure 1 along line III.III;
  • FIG. 4 is a general schematic view of workshop equipment according to the invention.
  • the swivel plate device 1 5 is intended to receive a vehicle steering wheel 2 for the purpose of controlling the turning radius of said vehicle.
  • the device 1 comprises a fixed support 3 in the form of a box having in a lower face 3a a screwed access plate and in its upper face 3b a circular hole 12 centered on the fixed axis 4 fixed support 3; the upper face 3b is surmounted by a rolling cage 10 on which rests a movable plate 5 of axis of rotation 6 always parallel to the axis 4 of the support 3 and merged with it in a so-called rest position of the movable plate 5
  • the center of the movable plate 5 is bored right through so as to receive and center means 7 for detecting and measuring the angular position of the plate 5 relative to the fixed support 3.
  • the means 7 for detecting and measuring the angular position of the plate 5 are constituted by an incremental encoder 11 comprising a movable upper part 13 secured to the plate 5 by means of screws 21, s extending along the axis 6 of rotation of the movable plate through the circular hole 12 of the fixed support 3, the movable upper part 13 is centered on the axis 6; and a lower reference part 14 coaxial with the previous one locked in rotation about the axis 6 relative to the fixed support 3, but linked in translation to the movable plate 5.
  • the plate 5 in association with the incremental encoder 11 can move in limited translation in two perpendicular directions belonging to the plane of the plate.
  • the first so-called main direction is that of ascent or descent of the vehicle respectively on the or the device
  • the second so-called secondary direction is perpendicular to the main direction.
  • the secondary translation is carried out by secondary guides 22 parallel to the secondary direction secured to the upper internal face 3b between which slides a carriage 23 linked in the secondary direction to the movable plate assembly 5 / incremental encoder 11.
  • the carriage 23 has two main guides 24 parallel to the main direction between which slides a plate 25 linked in the main direction to the movable plate 5 / incremental encoder 11.
  • assembly on this plate 25 is mounted a cylindrical crown 15 with the same axis 6 as the movable plate 5.
  • This ring 15 is part of a device for blocking in translation the movable plate 5 / incremental encoder 11 assembly, for example in the rest position during the ascent or descent phases of the vehicle on the or device.
  • the crown is intended to cooperate with locking rods 16 constituting mobile stop means 16 and activated by double-acting cylinders 17 pneumatic or hydraulic constituting motor means 17 to activate the movement of mobile stop means 16 between their two extreme positions.
  • the lower part 14 of the incremental encoder 11 is locked in rotation by the crown 15 in which it is mounted and locked.
  • the stop means 16 must be capable of being placed in contact with the peripheral edge of the crown 15 to stop it in translation in at least three radial directions, so as to immobilize it,
  • REPLACEMENT SHEET preferably in the center of the hole 12.
  • the stop means 16 extend symmetrically with respect to the central axis of the hole 12.
  • the pneumatic cylinders 17 are four in number identical and arranged in a rectangular parallelogram around the crown 15, each cylinder 17 is connected by an axis to the fixed support 3 and is extended by a link 16 provided an axis of rotation 18 linked to the fixed support and arranged so that, in an inactive phase, the link 16 forms a right angle with its activating jack 17 and, in an active phase, the link 16 tends to assume a position radial locking relative to and in contact with the crown 15.
  • this part is a magnetic detector 19 centered on the axis 6 of the movable plate 5.
  • a target 20 centered on the axis 4 of the fixed support is arranged on the internal part of the lower face 3a of the fixed support 3 and constitutes the other part of the means 8 for detecting the translational position of the plate 5 relative to the fixed support 3.
  • the target 20 is a magnetic metal reflector.
  • the device 1 in the preferred embodiment of the invention comprises elastic elements (springs) 27 elastically connecting the rolling cage 10 to the plate / encoder assembly, perimeter stops 28 intended to keep the rolling cage 10 at within the device, and two anti-cantilever ball devices 29 disposed between the fixed support 3 and the plate 5 substantially close to the periphery of the plate 5, diametrically opposite, along an axis parallel to the main direction of getting on or off the vehicle.
  • the device 1 is provided with an output port 30 for the information from the encoder and the detector, and with the pressure supply and pressure return ports 31 of the jacks 17.
  • the incremental encoder is a two-voice encoder with a resolution of 540 points making it possible to have, after electronic processing, a precision of 10 minutes of angle over 360 °.
  • the encoder has a dynamic reset.
  • the device 1 is integrated within a workshop equipment for controlling the steering angles of a vehicle mainly comprising two devices 1, each intended for a steering wheel, a console 32 for electronic information processing and for viewing the results remotely controllable from a distance, a pressure distributor 51 controlled by the console 32 for electronic processing intended to supply the blocking jacks from a reservoir 52 and a remote control 33.
  • REPLACEMENT SHEET - By remote control 33, the operator seated at the wheel of the vehicle activates the jacks 17 so that the two plates 5 are locked in the rest position, an indicator 34 "blocking" lights up on the display console 32;
  • the operator unlocks the trays 5 (an "unlocking" light 35 lights up) and performs a reset (reset), the displays 36, 37, 38, 39 of the console are at zero;
  • a right arrow 40 lights up on the console, the operator points to the right at 20 °, the left display 36 freezes; a left arrow 41 lights up on the console, the operator points to the left at 20 °, the right display 37 freezes, simultaneously the jacks 17 block the system and refocus the plates 5; the angle difference is displayed on the display 38 and is optionally transmitted to a printer.
  • an audible 53 and visual signal 54 makes it possible to check the offending plate.
  • the operation then consists in blocking the trays 5 by remote control 33, bringing out the vehicle, adjusting the track on the tray 5 concerned, bringing the vehicle back up on the trays 5, and recommencing the measurement. At the end of the measurement, the plates 5 are always locked before leaving the vehicle.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Body Structure For Vehicles (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)

Abstract

The invention relates to a device (1) with a movable tray (5) intended to receive a vehicle steering wheel (2), comprising a fixed support (3) traversed by a fixed axis (4) supporting the tray (5) in free rotation with respect to the fixed support (3) about a rotation axis (6) parallel to the fixed axis (4) and translationally movable with respect to the fixed support (3) in the plane of the movable tray (5), which translation is limited in amplitude by the arrangement of the movable tray (5) on the fixed support (3); means (7) for the detection and measurement of the angular position of the movable tray (5) with respect to the fixed support (3); and means (8) for the detection of the translation position of the movable tray (5) with respect to the fixed support (3). The invention also relates to automatic and/or remote-controlled means to block in translation the movable tray (5) during up and down phases of the wheel (2) of the vehicle respectively to or from the device.

Description

DISPOSITIF DE PLATEAUX PIVOTANTS PIVOTING TRAY DEVICE
ET EQUIPEMENT D'ATELIERAND WORKSHOP EQUIPMENT
POURVUS DE TELS DISPOSITIFSPROVIDED WITH SUCH DEVICES
La présente invention concerne des dispositifs à plateaux pivotants et les équipements d'atelier pourvus de tels dispositifs. L'invention concerne en particulier l'application de tels dispositifs ou équipements à la mesure des angles de braquage d'un véhicule pourvu de roues directrices.The present invention relates to devices with pivoting plates and workshop equipment provided with such devices. The invention relates in particular to the application of such devices or equipment to the measurement of the steering angles of a vehicle provided with steered wheels.
Les dispositifs existants sont de plusieurs sortes, à savoir :There are several types of existing devices, namely:
des dispositifs complètement mécaniques comprenant deux organes pivotant l'un par rapport à l'autre. Une graduation permet de mesurer le mouvement angulaire relatif et une goupille peut immobiliser les deux organes en plusieurs positions angulaires relatives. Un dispositif de ce type est décrit dans FR-A-2 433 736. De tels dispositifs nécessitent un déplacement incessant de l'opérateur entre la position du chauffeur d'où il tourne le volant, et la position avant du véhicule pour effectuer la lecture ou le blocage relatif des organes. En outre, ces dispositifs du fait de leur agencement n'autorisent aucun déplacement en translation de l'organe mobile. Or, ce déplacement est nécessaire à la précision de la mesure car il compense la chasse du train avant du véhicule qui constitue un élément de perturbation de la mesure.completely mechanical devices comprising two members pivoting with respect to each other. A graduation makes it possible to measure the relative angular movement and a pin can immobilize the two bodies in several relative angular positions. A device of this type is described in FR-A-2 433 736. Such devices require an incessant movement of the operator between the position of the driver from where he turns the steering wheel, and the front position of the vehicle for reading. or relative blockage of organs. In addition, these devices due to their arrangement do not allow any movement in translation of the movable member. However, this movement is necessary for the accuracy of the measurement because it compensates for the hunting of the front axle of the vehicle which constitutes an element of disturbance of the measurement.
Il existe aussi des dispositifs électromécaniques tels que par exemple celui décrit dans FR-A-2 619 443. CeThere are also electromechanical devices such as for example that described in FR-A-2 619 443. This
FEUILLE DE REMPLACEMENT document présente un dispositif à plateau pivotant horizontal destiné à recevoir une roue directrice. CeREPLACEMENT SHEET document presents a device with a horizontal swivel plate intended to receive a steering wheel. This
___ plateau est monté mobile sur un support fixe avec possibilité de pivotement libre et de déplacement limité 5 dans son propre plan. L'axe de pivotement de ce plateau est relié à un capteur angulaire assurant la mesure de l'angle de braquage. Ce capteur est porté par un bras associé au plateau mobile et accompagnant celui-ci dans ses mouvements de translation sans subir ses mouvements de pivotement. Le___ tray is mounted mobile on a fixed support with possibility of free pivoting and limited movement 5 in its own plane. The pivot axis of this plate is connected to an angular sensor ensuring the measurement of the steering angle. This sensor is carried by an arm associated with the mobile plate and accompanying the latter in its translation movements without undergoing its pivoting movements. The
10 bras mobile est équipé d'un organe de détection disposé en regard d'une plage fixe présentant des caractéristiques physiques, par exemple : conductibilité électrique, pouvoir réfléchissant, etc. Cet organe de détection est branché sur un circuit électrique commandant un organe de signalisation10 movable arm is equipped with a detection member arranged opposite a fixed range having physical characteristics, for example: electrical conductivity, reflective power, etc. This detection device is connected to an electrical circuit controlling a signaling device
15 ou un système d'arrêt de l'appareil de mesure lorsque la translation dépasse les limites autorisées. De tels dispositifs pallient le problème lié à la chasse du train avant du véhicule en autorisant une translation du plateau dans son propre plan et diminuent le nombre de déplacements15 or a system for stopping the measuring device when the translation exceeds the authorized limits. Such devices overcome the problem associated with driving the front axle of the vehicle by allowing the plate to translate into its own plane and reduce the number of trips.
20 de l'opérateur par l'introduction d'un système de contrôle électrique. Enfin, il intègre un système de sécurité permettant d'éviter d'obtenir des mesures faussées lorsque la chasse du train avant induit un déplacement en translation excessif relativement à l'agencement du 5 matériel. Cette autorisation de déplacement latéral du plateau mobile génère de nouveaux inconvénients comme la nécessité de bloquer le plateau mobile en translation lors de la montée ou de la descente du véhicule sur le dispositif. D'autre part, l'agencement désaxé des systèmes 0 de mesure est incompatible avec l'ergonomie quasi standardisée des ateliers de contrôle technique des véhicules automobiles.20 of the operator by the introduction of an electrical control system. Finally, it incorporates a security system making it possible to avoid obtaining false measurements when the hunting of the front axle induces an excessive translational displacement relative to the arrangement of the equipment. This authorization for lateral movement of the mobile platform generates new drawbacks such as the need to block the mobile platform in translation when getting on or off the vehicle on the device. On the other hand, the offset arrangement of the measurement systems 0 is incompatible with the almost standardized ergonomics of the technical inspection workshops of motor vehicles.
FEUILLE DE REMPLACEMENT Le but de la présente invention est de remédier aux inconvénients cités ci-dessus en proposant un dispositif du type décrit dans FR-A-2 619 443 proposant une meilleure ergonomie générale et surtout la possibilité de bloquer en translation le plateau mobile de façon automatique et/ou télécommandable.REPLACEMENT SHEET The object of the present invention is to remedy the drawbacks mentioned above by proposing a device of the type described in FR-A-2 619 443 offering better general ergonomics and above all the possibility of blocking the movable plate in translation automatically and / or remotely controllable.
A cet effet, il est proposé un dispositif à plateau mobile destiné à recevoir une roue directrice de véhicule, comportant un support fixe traversé par un axe fixe supportant le plateau librement mobile en rotation par rapport au support fixe autour d'un axe de rotation parallèle à l'axe fixe et mobile en translation par rapport au support fixe dans le plan du plateau mobile, laquelle translation est limitée en amplitude par l'agencement du plateau mobile sur le support fixe ; l'invention propose en outre des moyens automatiques et/ou télécommandables pour bloquer en translation le plateau mobile lors des phases de montée et de descente de la roue du véhicule respectivement sur ou du dispositif. Le dispositif selon l'invention comporte aussi des moyens de détection et de mesure de la position angulaire du plateau mobile par rapport au support fixe ; et des moyens de détection de la position en translation du plateau par rapport au support fixe.For this purpose, there is provided a movable plate device intended to receive a steering wheel of a vehicle, comprising a fixed support crossed by a fixed axis supporting the freely movable plate in rotation relative to the fixed support around a parallel axis of rotation. to the fixed and mobile axis in translation relative to the fixed support in the plane of the mobile plate, which translation is limited in amplitude by the arrangement of the mobile plate on the fixed support; the invention further provides automatic and / or remote-controlled means for blocking in translation the movable plate during the phases of raising and lowering of the vehicle wheel respectively on or from the device. The device according to the invention also comprises means for detecting and measuring the angular position of the movable plate relative to the fixed support; and means for detecting the translational position of the plate relative to the fixed support.
Selon l'invention, les moyens automatiques et/ou télécommandables pour bloquer en translation le plateau mobile comportent une couronne montée solidaire en translation du plateau mobile, des moyens mobiles de butée susceptibles d'être placés au contact de la couronne pour la bloquer selon au moins trois directions radiales, ou d'être éloignés de la couronne pour la libérer en translation et des moyens moteurs pour activer ces moyens mobiles de butée entre leurs deux positions extrêmes.According to the invention, the automatic and / or remotely controllable means for blocking in translation the movable plate comprise a crown mounted integral in translation with the movable plate, movable stop means capable of being placed in contact with the crown to block it according to at least three radial directions, or to be distant from the crown to release it in translation and from the motor means for activating these mobile stop means between their two extreme positions.
FEUILLE DE REMPLACEMENT L'invention concerne aussi un tel dispositif comportant en combinaison tout ou partie des caractéristiques mentionnées ci-dessus ou ci-après.REPLACEMENT SHEET The invention also relates to such a device comprising in combination all or part of the characteristics mentioned above or below.
L'invention concerne aussi un équipement d'atelier de contrôle des angles de braquage du véhicule comportant deux dispositifs tels que décrits ci-dessus chacun destiné à une roue directrice du véhicule, une console de traitement électronique et de visualisation des résultats, et une télécommande pour commander l'ensemble des opérations de contrôle.The invention also relates to workshop equipment for controlling the steering angles of the vehicle comprising two devices as described above, each intended for a steering wheel of the vehicle, an electronic processing and display console for results, and a remote control. to control all control operations.
D'autres caractéristiques de l'invention apparaîtront dans la description ci-après en référence aux dessins, donnés à titre non limitatif sur lesquels :Other characteristics of the invention will appear in the description below with reference to the drawings, given without limitation, in which:
- la figure 1 est une vue schématique en coupe étagée d'un dispositif de plateau pivotant dans une réalisation préférée de l'invention ;- Figure 1 is a schematic view in staged section of a swivel tray device in a preferred embodiment of the invention;
- la figure 2 est une vue schématique en coupe de la figure 1 suivant la ligne II.II ;- Figure 2 is a schematic sectional view of Figure 1 along line II.II;
- la figure 3 est une vue schématique en coupe de la figure 1 selon la ligne III.III ;- Figure 3 is a schematic sectional view of Figure 1 along line III.III;
- la figure 4 est une vue schématique générale d'un équipement d'atelier selon l'invention.- Figure 4 is a general schematic view of workshop equipment according to the invention.
Le dispositif 1 de plateau pivotant 5 est destiné à recevoir une roue 2 directrice de véhicule en vue du contrôle du rayon de braquage dudit véhicule.The swivel plate device 1 5 is intended to receive a vehicle steering wheel 2 for the purpose of controlling the turning radius of said vehicle.
FEUILLE DE REMPLACEMENT Dans la réalisation préférée de l'invention, le dispositif 1 comprend un support fixe 3 en forme de boîtier présentant dans une face inférieure 3a une plaque d'accès vissée et dans sa face supérieure 3b un trou circulaire 12 centré sur l'axe fixe 4 du support fixe 3 ; la face supérieure 3b est surmontée d'une cage à roulement 10 sur laquelle repose un plateau mobile 5 d'axe de rotation 6 toujours parallèle à l'axe 4 du support 3 et confondue avec lui dans une position dite de repos du plateau mobile 5. Le centre du plateau mobile 5 est alésé de part en part de manière à accueillir et à centrer des moyens 7 de détection et de mesure de la position angulaire du plateau 5 par rapport au support fixe 3.REPLACEMENT SHEET In the preferred embodiment of the invention, the device 1 comprises a fixed support 3 in the form of a box having in a lower face 3a a screwed access plate and in its upper face 3b a circular hole 12 centered on the fixed axis 4 fixed support 3; the upper face 3b is surmounted by a rolling cage 10 on which rests a movable plate 5 of axis of rotation 6 always parallel to the axis 4 of the support 3 and merged with it in a so-called rest position of the movable plate 5 The center of the movable plate 5 is bored right through so as to receive and center means 7 for detecting and measuring the angular position of the plate 5 relative to the fixed support 3.
Dans la réalisation préférée de l'invention, les moyens 7 de détection et de mesure de la position angulaire du plateau 5 sont constitués par un codeur incrémental 11 comprenant une partie supérieure mobile 13 solidarisée au plateau 5 par l'intermédiaire de vis 21, s'étendant suivant l'axe 6 de rotation du plateau mobile au travers du trou circulaire 12 du support fixe 3, la partie supérieure 13 mobile est centrée sur l'axe 6 ; et une partie inférieure de référence 14 coaxiale à la précédente bloquée en rotation autour de l'axe 6 par rapport au support fixe 3, mais liée en translation au plateau mobile 5.In the preferred embodiment of the invention, the means 7 for detecting and measuring the angular position of the plate 5 are constituted by an incremental encoder 11 comprising a movable upper part 13 secured to the plate 5 by means of screws 21, s extending along the axis 6 of rotation of the movable plate through the circular hole 12 of the fixed support 3, the movable upper part 13 is centered on the axis 6; and a lower reference part 14 coaxial with the previous one locked in rotation about the axis 6 relative to the fixed support 3, but linked in translation to the movable plate 5.
Le plateau 5 en association avec le codeur incrémental 11 peut se déplacer en translation limitée dans deux directions perpendiculaires appartenant au plan du plateau. La première direction dite principale est celle de montée ou de descente du véhicule respectivement sur le ou du dispositif, la seconde direction dite secondaire est perpendiculaire à la direction principale.The plate 5 in association with the incremental encoder 11 can move in limited translation in two perpendicular directions belonging to the plane of the plate. The first so-called main direction is that of ascent or descent of the vehicle respectively on the or the device, the second so-called secondary direction is perpendicular to the main direction.
FEUILLE DE REMPLACEMENT La translation résultante, combinaison des translations dans chacune des deux directions, est limitée en amplitude du fait de la localisation du codeur incrémental 7 dans le trou circulaire 12 du support fixe 3.REPLACEMENT SHEET The resulting translation, combination of translations in each of the two directions, is limited in amplitude due to the location of the incremental encoder 7 in the circular hole 12 of the fixed support 3.
Dans la réalisation préférée de l'invention, la translation secondaire est réalisée par des guides secondaires 22 parallèles à la direction secondaire solidaires de la face supérieure 3b interne entre lesquels glisse un chariot 23 lié dans la direction secondaire à l'ensemble plateau mobile 5 / codeur incrémental 11. Le chariot 23 présente deux guides principaux 24 parallèles à la direction principale entre lesquels glisse une plaque 25 liée dans la direction principale à l'ensemble plateau mobile 5 / codeur incrémental 11. Sur cette plaque 25 est montée solidaire une couronne cylindrique 15 de même axe 6 que le plateau mobile 5. Cette couronne 15 fait partie d'un dispositif de blocage en translation de l'ensemble plateau mobile 5 / codeur incrémental 11 par exemple en position de repos lors des phases de montée ou de descente du véhicule sur le ou du dispositif. Dans cette optique, la couronne est destinée à coopérer avec des biellettes de blocage 16 constituant des moyens 16 mobiles de butée et activées par des vérins à double effet 17 pneumatiques ou hydrauliques constituant des moyens 17 moteurs pour activer le mouvement des moyens 16 mobiles de butée entre leurs deux positions extrêmes. La partie inférieure 14 du codeur incrémental 11 est bloquée en rotation par la couronne 15 dans laquelle elle est montée et bloquée.In the preferred embodiment of the invention, the secondary translation is carried out by secondary guides 22 parallel to the secondary direction secured to the upper internal face 3b between which slides a carriage 23 linked in the secondary direction to the movable plate assembly 5 / incremental encoder 11. The carriage 23 has two main guides 24 parallel to the main direction between which slides a plate 25 linked in the main direction to the movable plate 5 / incremental encoder 11. assembly On this plate 25 is mounted a cylindrical crown 15 with the same axis 6 as the movable plate 5. This ring 15 is part of a device for blocking in translation the movable plate 5 / incremental encoder 11 assembly, for example in the rest position during the ascent or descent phases of the vehicle on the or device. With this in mind, the crown is intended to cooperate with locking rods 16 constituting mobile stop means 16 and activated by double-acting cylinders 17 pneumatic or hydraulic constituting motor means 17 to activate the movement of mobile stop means 16 between their two extreme positions. The lower part 14 of the incremental encoder 11 is locked in rotation by the crown 15 in which it is mounted and locked.
Les moyens 16 de butée doivent être susceptibles d'être placés au contact du chant périphérique de la couronne 15 pour la stopper en translation selon au moins trois directions radiales, de façon à l'immobiliser, deThe stop means 16 must be capable of being placed in contact with the peripheral edge of the crown 15 to stop it in translation in at least three radial directions, so as to immobilize it,
FEUILLE DE REMPLACEMENT préférence au centre du trou 12. Les moyens 16 de butée s'étendent symétriquement par rapport à l'axe central du trou 12.REPLACEMENT SHEET preferably in the center of the hole 12. The stop means 16 extend symmetrically with respect to the central axis of the hole 12.
Dans la réalisation préférée de l'invention, les vérins pneumatiques 17 sont au nombre de quatre identiques et disposés en parallélogramme rectangle autour de la couronne 15, chaque vérin 17 est lié par un axe au support fixe 3 et est prolongé par une biellette 16 pourvue d'un axe de rotation 18 lié au support fixe et disposé de telle sorte que, dans une phase inactive, la biellette 16 forme un angle droit avec son vérin activeur 17 et, dans une phase active, la biellette 16 tend à prendre une position radiale de blocage par rapport à et au contact de la couronne 15.In the preferred embodiment of the invention, the pneumatic cylinders 17 are four in number identical and arranged in a rectangular parallelogram around the crown 15, each cylinder 17 is connected by an axis to the fixed support 3 and is extended by a link 16 provided an axis of rotation 18 linked to the fixed support and arranged so that, in an inactive phase, the link 16 forms a right angle with its activating jack 17 and, in an active phase, the link 16 tends to assume a position radial locking relative to and in contact with the crown 15.
Sur la base inférieure de la couronne 15 est montée solidaire une partie de moyens 8 de détection de la position en translation du plateau 5 par rapport au support fixe 3. Dans la réalisation préférée de l'invention, cette partie est un détecteur magnétique 19 centré sur l'axe 6 du plateau mobile 5. Une cible 20 centrée sur l'axe 4 du support fixe est disposée sur la partie interne de la face 3a inférieure du support fixe 3 et constitue l'autre partie des moyens 8 de détection de la position en translation du plateau 5 par rapport au support fixe 3. Dans la réalisation préférée la cible 20 est un réflecteur métallique magnétique. Ces moyens 8 de détection de la position en translation ont essentiellement pour fonction de détecteur une translation au-delà d'une valeur admissible pour la qualité de la mesure en rotation par rapport à l'axe 6.On the lower base of the crown 15 is fixedly mounted a part of means 8 for detecting the translation position of the plate 5 relative to the fixed support 3. In the preferred embodiment of the invention, this part is a magnetic detector 19 centered on the axis 6 of the movable plate 5. A target 20 centered on the axis 4 of the fixed support is arranged on the internal part of the lower face 3a of the fixed support 3 and constitutes the other part of the means 8 for detecting the translational position of the plate 5 relative to the fixed support 3. In the preferred embodiment the target 20 is a magnetic metal reflector. These means 8 for detecting the translational position essentially have the function of detector of a translation beyond an admissible value for the quality of the measurement in rotation relative to the axis 6.
FEUILLE DE REMPLACEMENT En outre, le dispositif 1 dans la réalisation préférée de l'invention comporte des éléments élastiques (ressorts) 27 liant élastiquement la cage de roulement 10 à l'ensemble plateau/codeur, des butées périmétriques 28 destinées à maintenir la cage de roulement 10 au sein du dispositif, et deux dispositifs à billes 29 anti-porte-à- faux disposés entre le support fixe 3 et le plateau 5 sensiblement à proximité de la périphérie du plateau 5, diamétralement opposés, selon un axe parallèle .à la direction principale de montée ou descente du véhicule. Enfin, le dispositif 1 est pourvu d'un port de sortie 30 pour les informations du codeur et du détecteur, et des ports d'alimentation en pression et de retour de pression 31 des vérins 17.REPLACEMENT SHEET In addition, the device 1 in the preferred embodiment of the invention comprises elastic elements (springs) 27 elastically connecting the rolling cage 10 to the plate / encoder assembly, perimeter stops 28 intended to keep the rolling cage 10 at within the device, and two anti-cantilever ball devices 29 disposed between the fixed support 3 and the plate 5 substantially close to the periphery of the plate 5, diametrically opposite, along an axis parallel to the main direction of getting on or off the vehicle. Finally, the device 1 is provided with an output port 30 for the information from the encoder and the detector, and with the pressure supply and pressure return ports 31 of the jacks 17.
Dans la réalisation préférée .de l'invention, le codeur incrémental est un codeur à deux voix d'une résolution de 540 points permettant d'avoir après traitement électronique une précision de 10 minutes d'angle sur 360°. En outre, le codeur possède une remise à zéro dynamique.In the preferred embodiment of the invention, the incremental encoder is a two-voice encoder with a resolution of 540 points making it possible to have, after electronic processing, a precision of 10 minutes of angle over 360 °. In addition, the encoder has a dynamic reset.
Dans la pratique, le dispositif 1 est intégré au sein d'un équipement d'atelier de contrôle des angles de braquage d'un véhicule comprenant principalement deux dispositifs 1, chacun destiné à une roue directrice, une console 32 de traitement électronique des informations et de visualisation des résultats télécommandables à distance, un distributeur 51 de pression asservie à la console 32 de traitement électronique destiné à alimenter les vérins de blocage à partir d'un réservoir 52 et une télécommande 33.In practice, the device 1 is integrated within a workshop equipment for controlling the steering angles of a vehicle mainly comprising two devices 1, each intended for a steering wheel, a console 32 for electronic information processing and for viewing the results remotely controllable from a distance, a pressure distributor 51 controlled by the console 32 for electronic processing intended to supply the blocking jacks from a reservoir 52 and a remote control 33.
Le fonctionnement normal de l'équipement selon une réalisation préférée de l'invention est le suivant :The normal operation of the equipment according to a preferred embodiment of the invention is as follows:
FEUILLE DE REMPLACEMENT - par télécommande 33, l'opérateur assis au volant du véhicule active les vérins 17 de telle sorte que les deux plateaux 5 soient bloqués en position de repos, un voyant 34 "blocage" s'allume sur la console de visualisation 32 ;REPLACEMENT SHEET - By remote control 33, the operator seated at the wheel of the vehicle activates the jacks 17 so that the two plates 5 are locked in the rest position, an indicator 34 "blocking" lights up on the display console 32;
- l'opérateur fait avancer le véhicule à contrôler sur les plateaux 5 ;- the operator advances the vehicle to be checked on the platforms 5;
- par télécommande 33, l'opérateur débloque les plateaux 5 (un voyant "déblocage" 35 s'éclaire) et effectue une remise à zéro (réinitialisation) , les afficheurs 36, 37, 38, 39 de la console sont à zéro ;- by remote control 33, the operator unlocks the trays 5 (an "unlocking" light 35 lights up) and performs a reset (reset), the displays 36, 37, 38, 39 of the console are at zero;
- une flèche droite 40 s'éclaire sur la console, l'opérateur braque à droite à 20°, l'afficheur gauche 36 se fige ; une flèche à gauche 41 s'éclaire sur la console, l'opérateur braque à gauche à 20°, l'afficheur droit 37 se fige, simultanément les vérins 17 bloquent le système et recentrent les plateaux 5 ; l'écart d'angle s'affiche sur l'afficheur 38 et est transmis optionnellement vers une imprimante.- a right arrow 40 lights up on the console, the operator points to the right at 20 °, the left display 36 freezes; a left arrow 41 lights up on the console, the operator points to the left at 20 °, the right display 37 freezes, simultaneously the jacks 17 block the system and refocus the plates 5; the angle difference is displayed on the display 38 and is optionally transmitted to a printer.
En cas de détection de butée en translation du plateau 5 par rapport au plateau fixe 3, un signal sonore 53 et visuel 54 permet de vérifier le plateau incriminé. L'opération consiste alors à bloquer les plateaux 5 par télécommande 33, ressortir le véhicule, régler la voie sur le plateau 5 concerné, faire remonter le véhicule sur les plateaux 5 , et recommencer la mesure. A l'issue de la mesure, les plateaux 5 sont toujours verrouillés avant de sortir le véhicule.In the event of detection of the translational stop of the plate 5 relative to the fixed plate 3, an audible 53 and visual signal 54 makes it possible to check the offending plate. The operation then consists in blocking the trays 5 by remote control 33, bringing out the vehicle, adjusting the track on the tray 5 concerned, bringing the vehicle back up on the trays 5, and recommencing the measurement. At the end of the measurement, the plates 5 are always locked before leaving the vehicle.
FEUILLE DE REMPLACEMENT REPLACEMENT SHEET

Claims

R E V E N D I C A T I O N S
1. Dispositif (1) à plateau mobile (5) destiné à recevoir une roue directrice de véhicule (2) , comportant un support fixe (3) traversé par un axe fixe (4) , supportant le plateau (5) librement mobile en rotation par rapport au support fixe (3) autour d'un axe de rotation (6) parallèle à l'axe fixe (4) et mobile en translation par rapport au support fixe (3) dans le plan du plateau mobile (5) , laquelle translation est limitée en amplitude par l'agencement du plateau mobile (5) sur le support fixe1. Device (1) with movable plate (5) intended to receive a vehicle steering wheel (2), comprising a fixed support (3) crossed by a fixed axis (4), supporting the plate (5) freely movable in rotation relative to the fixed support (3) about an axis of rotation (6) parallel to the fixed axis (4) and movable in translation relative to the fixed support (3) in the plane of the mobile plate (5), which translation is limited in amplitude by the arrangement of the movable plate (5) on the fixed support
(3) ; caractérisé en ce qu'il comporte en outre des moyens(3); characterized in that it further comprises means
(9) automatiques et/ou télécommandables pour bloquer en translation le plateau mobile (5) lors des phases de montée et de descente de la roue (2) du véhicule respectivement sur ou du dispositif.(9) automatic and / or remotely controllable to block in translation the movable plate (5) during the ascent and descent phases of the wheel (2) of the vehicle respectively on or of the device.
2. Dispositif selon la revendication 1, caractérisé en ce que les moyens (9) automatiques et/ou télécommandables pour bloquer en translation le plateau mobile (5) comportent une couronne (15) montée solidaire en translation du plateau mobile (5) , des moyens (16) mobiles de butée susceptibles d'être placés au contact de la couronne (15) pour la bloquer selon au moins trois directions radiales, ou d'être éloignés de la couronne (15) pour la libérer en translation et des moyens (17) moteurs pour activer ces moyens (16) mobiles de butée entre leurs deux positions extrêmes.2. Device according to claim 1, characterized in that the means (9) automatic and / or remotely controllable to block in translation the movable plate (5) comprise a crown (15) mounted integral in translation with the movable plate (5), mobile stop means (16) capable of being placed in contact with the crown (15) to block it in at least three radial directions, or of being distant from the crown (15) to release it in translation and means ( 17) motors for activating these mobile means (16) of abutment between their two extreme positions.
3. Dispositif selon la revendication 1 ou 2, caractérisé en ce qu'il comporte des moyens (7) de détection et de mesure de la position angulaire du plateau mobile (5) par rapport au support fixe (3) et en ce que ces moyens (7) de détection et de mesure de la position3. Device according to claim 1 or 2, characterized in that it comprises means (7) for detecting and measuring the angular position of the movable plate (5) relative to the fixed support (3) and in that these means (7) for detecting and measuring the position
FEUILLE DE REMPLACEMENT angulaire du plateau mobile (5) comprennent un codeur incrémental (11) situé sous le plateau mobile (5) et s'étendant suivant l'axe (6) du plateau au travers un trou circulaire (12) réalisé dans le support fixe (3) formant boîtier, de même axe que le support fixe (3) et, définissant la limite de la translation, lequel codeur (11) comprend une partie supérieure mobile (13) solidaire du plateau mobile (5) et une partie inférieure (14) de référence bloquée en rotation autour de l'axe (6) du plateau mobile (5) et lié en translation au plateau mobile (5).REPLACEMENT SHEET angle of the movable plate (5) include an incremental encoder (11) located under the movable plate (5) and extending along the axis (6) of the plate through a circular hole (12) made in the fixed support (3 ) forming a housing, of the same axis as the fixed support (3) and, defining the limit of translation, which encoder (11) comprises a movable upper part (13) integral with the movable plate (5) and a lower part (14) reference locked in rotation about the axis (6) of the movable plate (5) and linked in translation to the movable plate (5).
4. Dispositif selon la revendication 3, caractérisé en ce que la translation de l'association plateau mobile (5) / codeur (11) est une combinaison de deux translations élémentaires respectivement dans une première direction dite principale portée par l'axe de montée ou de descente du véhicule respectivement sur le ou du dispositif, et dans une seconde direction dite secondaire perpendiculaire à la direction principale.4. Device according to claim 3, characterized in that the translation of the movable plate (5) / encoder (11) association is a combination of two elementary translations respectively in a first direction called main carried by the axis of ascent or lowering the vehicle respectively on the or device, and in a second direction called secondary perpendicular to the main direction.
5. Dispositif selon la revendication 4, caractérisé en ce que la translation dans la direction secondaire est réalisée par des guides secondaires (22) parallèles à la direction secondaire solidaires de la face supérieure (3b) interne du support fixe (3) formant boîtier, entre lesquels glisse un chariot (23) lié dans la direction secondaire à l'ensemble plateau mobile (5) / codeur incrémental (11), ledit chariot (23) présentant deux guides principaux (24) parallèles à la direction principale entre lesquels glisse une plaque (25) liée dans la direction principale à l'ensemble plateau mobile (5) / codeur incrémental (11) .5. Device according to claim 4, characterized in that the translation in the secondary direction is carried out by secondary guides (22) parallel to the secondary direction secured to the upper face (3b) internal of the fixed support (3) forming a housing, between which slides a carriage (23) linked in the secondary direction to the movable plate (5) / incremental encoder (11) assembly, said carriage (23) having two main guides (24) parallel to the main direction between which a plate (25) linked in the main direction to the movable plate (5) / incremental encoder (11) assembly.
FEUILLE DE REMPLACEMENT REPLACEMENT SHEET
6. Dispositif selon l'une quelconque des revendications 3 à 5, caractérisé en ce que la partie inférieure (14) de référence est montée bloquée dans une couronne cylindrique (15) de même axe (6) que le plateau mobile (5) localisée à l'intérieur du support fixe-boîtier6. Device according to any one of claims 3 to 5, characterized in that the lower part (14) of reference is mounted locked in a cylindrical ring (15) of the same axis (6) as the movable plate (5) located inside the fixed-housing support
(3) et, en phase bloquée, destinée à coopérer avec des biellettes (16) de blocage du plateau mobile, activées par des vérins (17) à double effet automatisables et/ou télécommandables liés au support fixe (3) , l'ensemble couronne (15) , biellettes (16) , vérins (17) étant les éléments constitutifs des moyens (9) automatiques et/ou télécommandables pour bloquer le plateau mobile en translation.(3) and, in the blocked phase, intended to cooperate with rods (16) for blocking the movable plate, activated by jacks (17) with double action that can be automated and / or remote controlled linked to the fixed support (3), the assembly crown (15), connecting rods (16), jacks (17) being the constituent elements of the means (9) automatic and / or remotely controllable to block the movable plate in translation.
7. Dispositif selon les revendications 5 et 6, caractérisé en ce que la couronne cylindrique (10, 15) est montée solidaire sur la plaque (25) .7. Device according to claims 5 and 6, characterized in that the cylindrical crown (10, 15) is fixedly mounted on the plate (25).
8. Dispositif selon la revendication 6 ou 7, caractérisé en ce que les vérins (17) sont au nombre de quatre identiques et de type pneumatique, disposés en parallélogramme rectangle autour de la couronne (15) , chaque vérin (17) étant prolongé par une biellette (16) pourvue d'un axe de rotation (18) lié au support fixe (3) tel que, dans une phase inactive, la biellette (16) forme un angle droit avec le vérin (17) et, dans une phase active, la biellette (16) a une position radiale de blocage au contact de la couronne (15) .8. Device according to claim 6 or 7, characterized in that the jacks (17) are four in number identical and of pneumatic type, arranged in a rectangular parallelogram around the crown (15), each jack (17) being extended by a link (16) provided with a rotation axis (18) linked to the fixed support (3) such that, in an inactive phase, the link (16) forms a right angle with the jack (17) and, in a phase active, the link (16) has a radial locking position in contact with the crown (15).
9. Dispositif selon l'une quelconque des revendications 3 à 8, caractérisé en ce qu'il comporte des moyens (8) de détection de la position en translation du plateau mobile (5) par rapport au support fixe (3) , et en ce que ces moyens (8) de détection de la position en9. Device according to any one of claims 3 to 8, characterized in that it comprises means (8) for detecting the position in translation of the movable plate (5) relative to the fixed support (3), and in what these means (8) for detecting the position in
FEUILLE DE REMPLACEMENT translation du plateau (5) comprennent un détecteur magnétique (19) centré sur l'axe (6) du plateau mobile (5) et porté par la partie inférieure (14) de référence du codeur (7) , et une cible (20) centrée sur l'axe (4) du support fixe (3) localisée sur la face (3a) inférieure du support fixe (3) en regard du détecteur (19).REPLACEMENT SHEET translation of the plate (5) comprises a magnetic detector (19) centered on the axis (6) of the mobile plate (5) and carried by the lower part (14) of the encoder reference (7), and a target (20) centered on the axis (4) of the fixed support (3) located on the lower face (3a) of the fixed support (3) opposite the detector (19).
10. Dispositif selon l'une quelconque des revendications 3 à 9, caractérisé en ce que le plateau mobile (5) repose sur le support fixe (3) par l'intermédiaire d'une cage de roulement à billes (10) , et en ce qu'il comporte en outre des ressorts (27) liant élastiquement la cage de roulement (10) à l'ensemble plateau/codeur, et des butées périmétriques (28) destinées à maintenir la cage de roulement au sein du dispositif (1) .10. Device according to any one of claims 3 to 9, characterized in that the movable plate (5) rests on the fixed support (3) by means of a ball bearing cage (10), and in what it further comprises springs (27) elastically connecting the bearing cage (10) to the plate / encoder assembly, and perimeter stops (28) intended to hold the bearing cage within the device (1) .
11. Dispositif selon l'une quelconque des revendications 3 à 10, caractérisé en ce qu'il comporte deux dispositifs à billes (20) anti-porte-à-faux disposés entre le support fixe (3) et le plateau (5) sensiblement à' la périphérie du plateau (5) , diamétralement opposés selon un axe parallèle à une direction principale de montée ou descente du véhicule.11. Device according to any one of claims 3 to 10, characterized in that it comprises two anti-cantilever ball devices (20) disposed between the fixed support (3) and the plate (5) substantially to 'the periphery of the plate (5), diametrically opposed along an axis parallel to a main direction of climb or descent of the vehicle.
12. Equipement d'atelier de contrôle des angles de braquage d'un véhicule, caractérisé en ce qu'il comporte deux dispositifs (1) selon l'une quelconque des revendications 1 à 11, chacun destiné à une roue (2) directrice de véhicule, une console (32) de traitement électronique des informations et de visualisation des résultats télécommandables à distance, un distributeur (51) de pression pneumatique asservi à la console (32) de traitement électronique et destiné à alimenter les vérins12. Workshop equipment for controlling the steering angles of a vehicle, characterized in that it comprises two devices (1) according to any one of claims 1 to 11, each intended for a steering wheel (2) of vehicle, a console (32) for electronic processing of information and display of results remotely controllable, a pneumatic pressure distributor (51) controlled by the console (32) for electronic processing and intended to power the jacks
FEUILLE DE REMPLACEMENT (17) de blocage à partir d'un réservoir 52, et une télécommande (33) .REPLACEMENT SHEET (17) blocking from a reservoir 52, and a remote control (33).
FEUILLE DE REMPLACEMENT REPLACEMENT SHEET
PCT/FR1993/000002 1992-01-06 1993-01-05 Pivoting tray device and workshop equipment provided with such device WO1993014369A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR92/00229 1992-01-06
FR9200229A FR2685953B3 (en) 1992-01-06 1992-01-06 REALIZATION OF ELECTRONIC PIVOTING PLATES EQUIPPED WITH INCREMENTAL ENCODERS WITH AUTOMATIC LOCKING AND UNLOCKING.

Publications (1)

Publication Number Publication Date
WO1993014369A1 true WO1993014369A1 (en) 1993-07-22

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PCT/FR1993/000002 WO1993014369A1 (en) 1992-01-06 1993-01-05 Pivoting tray device and workshop equipment provided with such device

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FR (1) FR2685953B3 (en)
WO (1) WO1993014369A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2690520A1 (en) * 1992-01-06 1993-10-29 Dragon Albert Electronic display for front wheel angular displacement of vehicles - has automatic locking and unlocking by coded infrared signal and electronic display of relative wheel angles.

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1530639B1 (en) * 1965-11-17 1969-11-06 Daimler Benz Ag Device for testing vehicle steering
FR2571495A1 (en) * 1984-10-09 1986-04-11 Ouest Centre Tech Apave Apparatus for detecting the play of wheel-axle units and checking the steering of a motor vehicle

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1530639B1 (en) * 1965-11-17 1969-11-06 Daimler Benz Ag Device for testing vehicle steering
FR2571495A1 (en) * 1984-10-09 1986-04-11 Ouest Centre Tech Apave Apparatus for detecting the play of wheel-axle units and checking the steering of a motor vehicle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2690520A1 (en) * 1992-01-06 1993-10-29 Dragon Albert Electronic display for front wheel angular displacement of vehicles - has automatic locking and unlocking by coded infrared signal and electronic display of relative wheel angles.

Also Published As

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FR2685953B3 (en) 1994-04-22
FR2685953A1 (en) 1993-07-09

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