WO2021251810A1 - Test bench relating to a dynamic weighing system which operates at high speed and which is designed for measuring the static load of the axles and the total weight of vehicles - Google Patents
Test bench relating to a dynamic weighing system which operates at high speed and which is designed for measuring the static load of the axles and the total weight of vehicles Download PDFInfo
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- WO2021251810A1 WO2021251810A1 PCT/MA2021/000010 MA2021000010W WO2021251810A1 WO 2021251810 A1 WO2021251810 A1 WO 2021251810A1 MA 2021000010 W MA2021000010 W MA 2021000010W WO 2021251810 A1 WO2021251810 A1 WO 2021251810A1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G23/00—Auxiliary devices for weighing apparatus
- G01G23/01—Testing or calibrating of weighing apparatus
Definitions
- the present invention relates to the field of dynamic in-motion weighing systems at high speed of vehicles, produced as a prototype for the needs of practical laboratory tests.
- the device which is the subject of the invention aims to verify the functionalities of dynamic weighing systems in motion in a situation close to normal road traffic conditions, produced on a prototype by researchers in research laboratories within universities, centers and businesses.
- the present invention provides a solution to the problem of the availability of test benches relating to the high-speed dynamic weighing system, for laboratory use, with the aim of improving the contribution of researchers as well as the development of research. scientist in this field.
- the present invention relates to the design and production of a test bench for verifying the functionality of dynamic weighing systems in motion at high speed of vehicles.
- This test bench which is dedicated to researchers and specialists in research laboratories (universities, businesses, companies, etc.) aims to measure the static load of the axle and the overall weight of the vehicle from transport.
- test bench object of the invention took into consideration the operationalization of the system under all driving conditions in terms of speeds practiced, the quality of the road profile as well as the suspension system mounted on vehicles, with a view to to guarantee certain criteria linked to the alignment of the system to be achieved with the conditions of use in the field.
- the advantages of the test bench object of the invention relate to:
- the test bench consists of two main parts.
- the first part represents the basic support made up of the infrastructure and the vehicle, while the second part consists of the technical part of the model relating to the measurement operation including the piezoelectric sensors, electronic cards and the control part.
- the model of the vehicle is reduced to a wheel (tire + rim) mounted on a suspension system knowing that the instantaneous force applied by the axle of the vehicle on the surface of the road is distributed on the wheels constituting the axle of the vehicle; for example in the case of a single axle, the instantaneous force is distributed over the two wheels of the axle.
- the test bench is made up of: i. Power part:
- a roller (2) made of metal plate in the form of a hollow cylinder, representing the structure of the road;
- a wheel (1) (tire mounted on a rim);
- a tachometer (25) capable of measuring the linear speed of the wheel ranging from 0 to 100 km / h;
- the test bench is supplied by a three-phase 380V mains voltage (28) and protected by the magnetothermal circuit breaker (23) positioned between the voltage source and the variable speed drive (24).
- the latter device makes it possible to vary the speed of rotation of the asynchronous motor (3) which drives the roller (2) with a rotational movement.
- On the facial part of the pebble (contour) is glued the pavement coating (mixture of sand and cement) as well as the fixing of the grooves (20), (21), ... housing the piezoelectric sensors.
- Power transmission between the engine and the roller is effected by means of a chain (5) mounted on the pinions (6) and (7) integral with these two components.
- a tachometer (25) is installed on the test bench, the sensor of which is fixed to the axis of the roller (2) in order to measure the linear speed of the wheel (1).
- the latter coupled with a suspension system (Spring and shock absorber, (18) and (19)), is placed on the traffic lane (contour of the roller (2)) using the fixing and guiding system .
- a bolt (9) On the median of the fixing rod of the ends of the shock absorbers (end opposite to that of the axis of the wheel) is welded a bolt (9) on which the calibrated masses (22), recognized to be true, can be added by the user according to the desired weight.
- the assembly consisting of the wheel (1) with the suspension system (18) and (19), the fixing system and the standard masses (22) have a single degree of freedom along the Z axis (vertical axis) making thus a vertical oscillatory movement guided by the guide system (superimposed tubes with the use of a lubricant facilitating vertical displacement).
- the oscillations produced are generated due to causal factors related to the speed of the wheel, the quality of the coating profile as well as the quality of the mounted suspension system.
- the test bench system starts up, the wheel exerts, during its progression, instantaneous forces on the roadway, the modulus of which depends on the causal factors mentioned above, and consequently on the piezoelectric sensors installed.
- the signals emitted by these sensors are acquired by an electronic card housed within the roller.
- the electrical signals captured by this board are transferred using a wireless radio wave communication system, which are picked up by another electronic board that is located outside the test bench in a suitable location.
- the latter card is responsible for carrying out the necessary processing and performing the algorithms required in order to measure the static load and the overall weight of vehicles. iii. Brief description of the diagrams
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- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
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Abstract
The invention relates to a test bench which is dedicated to verifying the functionalities of dynamic weighing systems operating at high speeds. This test bench makes it possible to measure the static load of the axle and the total weight of transport vehicles in a situation very similar to the measurement which is carried out under normal road traffic conditions, characterised by a roadway and real traffic. The test bench is constituted by a roller (2), the face portion (contour) of which represents the structure of the roadway and in which the piezoelectric sensors are embedded. This roller, which rotates about its axis, is driven by the asynchronous electric motor (3) by means of the power transmission chain (5). The rotation speed of the motor is variable and is controlled by the speed variator (24). A wheel (1) which is mounted on a suspension system is placed on the travel path (contour of the roller) by means of a fixing and guiding system. A bolt (9), to which calibrated standard masses (22) which are recognised as being true and which can be added according to the desired weight, is welded to the shock absorber mounting rod. The assembly constituted by the coupled wheel of the suspension system, the fixing system and the standard masses have a single degree of freedom along the axis Z (vertical axis). The linear speed of the wheel is fixed in accordance with the rotational speed of the electric motor. As a result of the causal factors connected with the speed of the wheel, the covering profile and the suspension system, the movement of the wheel makes it possible to generate instantaneous forces which are applied to the roadway and consequently to the piezoelectric sensors. An electronic board which is received within the roller makes it possible to acquire the electrical signals produced by the piezoelectric sensors and to transmit them via radio waves to another electronic board which is located outside the roller for processing and calculating the static load of the axle and the total weight of vehicles.
Description
BANC D'ESSAI RELATIF A UN SYSTEME DE PESAGE DYNAMIQUE EN MARCHE A HAUTE VITESSE DESTINE POUR LA MESURE DE LA CHARGE STATIQUE DES ESSIEUX ET DU POIDS GLOBAL DE VEHICULES TEST BENCH RELATING TO A HIGH-SPEED DYNAMIC WEIGHING SYSTEM INTENDED FOR MEASURING STATIC AXLE LOAD AND OVERALL VEHICLE WEIGHT
Description Description
I. Domaine technique I. Technical field
La présente invention concerne le domaine des systèmes de pesage dynamique en marche à haute vitesse de véhicules, réalisés en prototype pour les besoins d’essais pratiques en laboratoire. The present invention relates to the field of dynamic in-motion weighing systems at high speed of vehicles, produced as a prototype for the needs of practical laboratory tests.
II. Objectif de l’invention II. Objective of the invention
Le dispositif objet de l’invention vise à vérifier les fonctionnalités des systèmes de pesage dynamique en marche dans une situation proche aux conditions normales de la circulation routière, réalisées sur un prototype par les chercheurs au sein des laboratoires de recherche au sein des universités, centres et entreprises. The device which is the subject of the invention aims to verify the functionalities of dynamic weighing systems in motion in a situation close to normal road traffic conditions, produced on a prototype by researchers in research laboratories within universities, centers and businesses.
III. Etat de la technique III. State of the art
Les investigations de recherche relevées dans la littérature, dans le domaine des systèmes de pesage dynamique à haute vitesse, sont souvent focalisées sur les systèmes conçus autour d’une grille multi-capteurs piézoélectriques. Cette grille de capteurs fournit les données nécessaires qui serviront de base, en sus d’un bloc électronique de traitement et de calcul, pour la mesure de la charge statique des essieux et du poids global de véhicules. Toutefois, jusqu’à aujourd’hui, il n’existe aucun système de pesage dynamique à haute vitesse, reconnu légalement, pour le contrôle des poids de véhicule, mais celui utilisé actuellement sert à détecter les véhicules potentiellement en surpoids ou éventuellement à recueillir les données de trafic routier pour des besoins statistiques. Research investigations identified in the literature in the field of high speed dynamic weighing systems are often focused on systems designed around a piezoelectric multi-sensor grid. This grid of sensors provides the necessary data which will serve as a basis, in addition to an electronic processing and calculation unit, for the measurement of the static load of the axles and the overall weight of vehicles. However, until today, there is no legally recognized high-speed dynamic weighing system for vehicle weight control, but the one in use today serves to detect potentially overweight vehicles or possibly collect the weight. road traffic data for statistical purposes.
Les essais de vérification des fonctionnalités des systèmes de pesage dynamique, objet des travaux de recherche, sont généralement effectués, in situ sur des cas réels, dans le cadre des contrats de partenariat entre les secteurs public-privé (PPP). En effet, plusieurs études ont été menées à ce sujet, au profit des gouvernements nationaux, par
des associations notamment européennes telles que le « Forum of European National Highway Research Laboratories (FEHRL) » et « International Society for Weigh-ln-Motion (ISWIM) » qui sont actives dans le domaine des recherches liées aux infrastructures et des transports. The functional verification tests of dynamic weighing systems, the subject of research work, are generally carried out, in situ on real cases, within the framework of partnership contracts between the public-private sectors (PPP). Indeed, several studies have been carried out on this subject, for the benefit of national governments, by notably European associations such as the "Forum of European National Highway Research Laboratories (FEHRL)" and "International Society for Weigh-ln-Motion (ISWIM)" which are active in the field of research related to infrastructure and transport.
Par ailleurs, si les essais de vérification des systèmes de pesage dynamique à haute vitesse sont très onéreux sur une chaussée et un trafic réel, eu égard au coût important des acquisitions du matériel requis. Quant aux essais laboratoires sont très compliqués à réaliser du fait qu’il existe un manque de banc d’essai qui permet de s’approcher du cas réel de mesure de la charge statique de l’essieu de véhicule, notamment en ce qui concerne les vitesses pratiquées dans les conditions normales de circulation par les véhicules de transport routiers (poids lourds) qui peut varier de 0 à 100 km/h. La vitesse, conjuguée de la qualité de l’uni de la chaussée et du système de suspension monté sur véhicule, demeure le facteur causal plus déterminant dans l’opération de mesure et, en particulier, de sa précision car elle est derrière l’augmentation de l’écart type des valeurs produites par les capteurs piézoélectriques par rapport à la valeur de la charge statique (valeur vraie de l’essieu). En effet, le mouvement dynamique du véhicule crée des interactions entre les pneumatiques d’un essieu et la surface de la chaussée, appelées charges dynamiques, qui sont ajoutées à la charge statique de l’essieu du véhicule. Dès lors, plus la vitesse du véhicule croit, plus l’amplitude des charges dynamiques augmente et par conséquent plus les erreurs de mesure deviennent très importantes. Moreover, if the verification tests of high speed dynamic weighing systems are very expensive on a roadway and real traffic, given the high cost of acquiring the required equipment. As for the laboratory tests are very complicated to carry out due to the fact that there is a lack of test bench which allows to approach the real case of measurement of the static load of the vehicle axle, in particular as regards the speeds practiced under normal traffic conditions by road transport vehicles (heavy goods vehicles) which can vary from 0 to 100 km / h. The speed, combined with the quality of the smoothness of the roadway and the vehicle-mounted suspension system, remains the most determining causal factor in the measuring operation and, in particular, of its accuracy as it is behind the increase. the standard deviation of the values produced by the piezoelectric sensors compared to the value of the static load (true value of the axle). This is because the dynamic movement of the vehicle creates interactions between the tires on an axle and the road surface, called dynamic loads, which are added to the static load of the vehicle axle. Therefore, the more the speed of the vehicle increases, the more the amplitude of the dynamic loads increases and consequently the more the measurement errors become very important.
De ce fait, considérant le coût élevé des investissements nécessaires pour la réalisation des essais pratiques sur les systèmes de pesage dynamiques en marche dans les conditions normales de la circulation routière et considérant l’insuffisance constatée de l’existence de bancs d’essai utilisés en laboratoire en la matière, la contribution des chercheurs dans ce domaine est fortement affectée par les contraintes matérielles ci-dessus évoquées. Therefore, considering the high cost of the investments necessary for carrying out practical tests on dynamic weighing systems in operation under normal road traffic conditions and considering the observed insufficiency of the existence of test benches used in laboratory in this area, the contribution of researchers in this field is strongly affected by the material constraints mentioned above.
La présente invention apporte une solution au problème de la disponibilité de bancs d’essai relatif au système de pesage dynamique à haute vitesse, à usage de laboratoire, et ce dans le but d’améliorer la contribution des chercheurs ainsi que le développement de la recherche scientifique dans ce domaine.
IV. Description de l’invention : The present invention provides a solution to the problem of the availability of test benches relating to the high-speed dynamic weighing system, for laboratory use, with the aim of improving the contribution of researchers as well as the development of research. scientist in this field. IV. Description of the invention:
La présente invention porte sur la conception et la réalisation d’un banc d’essai permettant de vérifier les fonctionnalités des systèmes de pesage dynamique en marche à haute vitesse de véhicules. Ce banc d’essai qui est dédié aux chercheurs et aux spécialistes au sein des laboratoires de recherche (universités, ventre, entreprises...) vise de procéder à la mesure de la charge statique de l’essieu et du poids global de véhicule de transport. The present invention relates to the design and production of a test bench for verifying the functionality of dynamic weighing systems in motion at high speed of vehicles. This test bench, which is dedicated to researchers and specialists in research laboratories (universities, businesses, companies, etc.) aims to measure the static load of the axle and the overall weight of the vehicle from transport.
La conception du banc d’essai a pris en considération l’opérationnalisation du système sous toutes les conditions de roulement en termes de vitesses pratiquées, de la qualité du profil de la chaussée ainsi que le système de suspension monté sur véhicules, et ce en vue de garantir certains critères liés au rapprochement du système à réaliser aux conditions d’usage sur le terrain. Les avantages du banc d’essai objet de l’invention portent sur : The design of the test bench took into consideration the operationalization of the system under all driving conditions in terms of speeds practiced, the quality of the road profile as well as the suspension system mounted on vehicles, with a view to to guarantee certain criteria linked to the alignment of the system to be achieved with the conditions of use in the field. The advantages of the test bench object of the invention relate to:
- Une conception simplifiée qui est de nature à réduire au maximum les difficultés techniques de fabrication ; - A simplified design which is likely to reduce the technical difficulties of manufacture as much as possible;
- Un système compact répondant au contrainte d’espace en laboratoire et de portabilité ; - A compact system meeting the constraints of laboratory space and portability;
- Un modèle soumis aux diverses valeurs de vitesses pratiquées réellement (critère principal de tests en laboratoire). - A model subjected to the various speed values actually practiced (main criterion of laboratory tests).
Le banc d’essai est constitué de deux parties principales. La première partie représente le support de base constituée de l’infrastructure et le véhicule tandis que la deuxième partie est formée du volet technique du modèle relatif à l’opération de mesurage intégrant les capteurs piézoélectriques, les cartes électroniques et la partie commande. Pour des raisons de simplification de calculs, la modélisation du véhicule est réduite à une roue (pneu+ jante) montée sur un système de suspension sachant que la force instantanée appliquée par l’essieu du véhicule sur la surface de la chaussée est répartie sur les roues constituant l’essieu du véhicule ; par exemple en cas d’un essieu simple, la force instantanée est répartie sur les deux roues de l’essieu. The test bench consists of two main parts. The first part represents the basic support made up of the infrastructure and the vehicle, while the second part consists of the technical part of the model relating to the measurement operation including the piezoelectric sensors, electronic cards and the control part. For reasons of simplification of calculations, the model of the vehicle is reduced to a wheel (tire + rim) mounted on a suspension system knowing that the instantaneous force applied by the axle of the vehicle on the surface of the road is distributed on the wheels constituting the axle of the vehicle; for example in the case of a single axle, the instantaneous force is distributed over the two wheels of the axle.
Le banc d’essais est composé de :
i. Partie puissance : The test bench is made up of: i. Power part:
- Un moteur électrique asynchrone (3) ; - An asynchronous electric motor (3);
- Un galet (2) fabriqué en plaque métallique sous forme d’un cylindre creux, représentant la structure de la chaussée ; - A roller (2) made of metal plate in the form of a hollow cylinder, representing the structure of the road;
- Une couche de revêtement (gravite et ciment) collée sur le contour du galet (2); - A coating layer (gravity and cement) glued to the contour of the pebble (2);
- Des rainures (20), (21)..,, dont le nombre est fixé selon la conception du système de pesage dynamique en marche à haute vitesse objet du prototype. Elles sont constituées par des socles en aluminium de forme U qui sont incorporées transversalement dans le revêtement. Ces rainures sont conçues pour loger les capteurs piézoélectriques ; - Grooves (20), (21) .. ,, whose number is fixed according to the design of the dynamic weighing system in motion at high speed object of the prototype. They consist of U-shaped aluminum plinths which are incorporated transversely into the covering. These grooves are designed to house the piezoelectric sensors;
- Une roue (1 ) (pneu monté sur une jante) ; - A wheel (1) (tire mounted on a rim);
- 2 ressort- amortisseurs (18) et (19) constituant le système de suspension ;- 2 shock absorber springs (18) and (19) constituting the suspension system;
- Organe de transmission de puissance entre le moteur et le galet : - Power transmission member between the engine and the roller:
• Une chaîne (5) en métal ; • A metal chain (5);
• Deux pignons (6) et (7). • Two pinions (6) and (7).
- Une structure métallique composée de : - A metallic structure composed of:
• 2 barres métalliques (10) et (11 ) de forme carrée servant du guidage et de maintien du mouvement de la roue sur la chaussée ; • 2 metal bars (10) and (11) of square shape serving to guide and maintain the movement of the wheel on the roadway;
• 2 vis (16) et (17) servant de support de fixation des ressorts- amortisseurs ; • 2 screws (16) and (17) serving as mounting support for the shock absorber springs;
• 4 barres métalliques carrées (12), (13), (14) et (15), qui superposent avec les barres (10) et (11), servant le support de fixation des vis susvisées au moyen des écrous soudés sur lesdites barres. Elles assurent également le guidage de la roue sur la chaussée ; • 4 square metal bars (12), (13), (14) and (15), which overlap with the bars (10) and (11), serving as the mounting support for the aforementioned screws by means of nuts welded to said bars . They also ensure the guidance of the wheel on the road;
• 1 boulon (9) avec une vis sur laquelle des masses étalons (22) calibrées sont posées et fixées à l’aide de écrou du boulon (9);• 1 bolt (9) with a screw on which calibrated reference masses (22) are placed and fixed using the nut of the bolt (9);
• 1 socle métallique (4) sur lequel le système est monté. • 1 metal base (4) on which the system is mounted.
- Des masses étalons (22) calibrées de 5kg chacune ; - Standard masses (22) calibrated of 5 kg each;
- Des masses d’équilibrage du galet et de stabilisation du banc d’essai respectivement contre l’effet de balourd et des vibrations.
ii. Partie commande : - Weights for balancing the roller and stabilizing the test bench respectively against the effect of unbalance and vibrations. ii. Command part:
- Un disjoncteur magnétothermique (23) ; - A magnetothermal circuit breaker (23);
- Un variateur de vitesse triphasé (24) ; - A three-phase variable speed drive (24);
- Un tachymètre (25) pouvant mesurer la vitesse linéaire de la roue allant de 0 à 100 km/h ; - A tachometer (25) capable of measuring the linear speed of the wheel ranging from 0 to 100 km / h;
- Une dizaine de mètres de fil électrique de 3 phases et terre (8) ; - About ten meters of electric wire of 3 phases and earth (8);
- Une structure de fixation des composants électriques de la partie commande (26) ; - A fixing structure for the electrical components of the control part (26);
- Une boite de rangement d’outils (27). - A tool storage box (27).
Le banc d’essai est alimenté par une tension secteur triphasée 380V (28) et protégé grâce au disjoncteur magnétothermique (23) positionné entre la source de tension et le variateur de vitesse (24). Ce dernier dispositif permet de varier la vitesse de rotation du moteur asynchrone (3) qui entraîne le galet (2) avec un mouvement de rotation. Sur la partie faciale du galet (contour) est collé le revêtement de la chaussée (mélange de sable et ciment) ainsi que la fixation des rainures (20), (21 ),... logeant les capteurs piézoélectriques. La transmission de puissance entre le moteur et le galet s’effectue au moyen d’une chaîne (5) montée sur les pignons (6) et (7) solidaires sur ces deux organes. Un tachymètre (25) est installé sur le banc d’essai dont le capteur est fixé sur l’axe du galet (2) et ce afin de mesurer la vitesse linéaire de la roue (1 ). Cette dernière, couplée avec un système de suspension (Ressort et amortisseur, (18) et (19)), est placée sur la voie de la circulation (contour du galet (2)) à l’aide le système de fixation et de guidage. Sur la médiane de la tige de fixation des extrémités des amortisseurs (extrémité opposée à celle de l’axe de la roue) est soudée un boulon (9) sur lequel des masses établons (22) calibrées, reconnues vraies peuvent être rajoutées par l’utilisateur en fonctions du poids voulu. L’ensemble constitué de la roue (1 ) avec le système de suspension (18) et (19), le système de fixation et les masses étalons (22) ont un seul degré de liberté selon l’axe Z (axe verticale) faisant ainsi un mouvement oscillatoire vertical guidé par le système de guidage (tubes superposés avec utilisation d’un lubrifiant facilitant le déplacement vertical). Les oscillations produites sont engendrées en raison des facteurs causaux liés à la vitesse de la roue, à la qualité du profile du revêtement ainsi que à la qualité du système de suspension monté.
Lorsque le système du banc d’essai se met en marche, la roue exerce, lors de sa progression, des forces instantanées sur la chaussée dont le module dépend des facteurs causaux cités ci-dessus, et par conséquence sur les capteurs piézoélectriques installés. Les signaux émis par ces capteurs sont acquis par une carte électronique logée au sein du galet. Les signaux électriques capturés par cette carte sont transférés à l’aide d’un système de communication sans fil à ondes radio, qui sont récupérés par une autre carte électronique qui se trouve à l’extérieur du banc d’essai dans un endroit approprié. Cette dernière carte a la charge d’effectuer les traitements nécessaires et d’exécuter les algorithmes requis en vue de mesurer la charge statique et le poids global de véhicules. iii. Brève description des schémas The test bench is supplied by a three-phase 380V mains voltage (28) and protected by the magnetothermal circuit breaker (23) positioned between the voltage source and the variable speed drive (24). The latter device makes it possible to vary the speed of rotation of the asynchronous motor (3) which drives the roller (2) with a rotational movement. On the facial part of the pebble (contour) is glued the pavement coating (mixture of sand and cement) as well as the fixing of the grooves (20), (21), ... housing the piezoelectric sensors. Power transmission between the engine and the roller is effected by means of a chain (5) mounted on the pinions (6) and (7) integral with these two components. A tachometer (25) is installed on the test bench, the sensor of which is fixed to the axis of the roller (2) in order to measure the linear speed of the wheel (1). The latter, coupled with a suspension system (Spring and shock absorber, (18) and (19)), is placed on the traffic lane (contour of the roller (2)) using the fixing and guiding system . On the median of the fixing rod of the ends of the shock absorbers (end opposite to that of the axis of the wheel) is welded a bolt (9) on which the calibrated masses (22), recognized to be true, can be added by the user according to the desired weight. The assembly consisting of the wheel (1) with the suspension system (18) and (19), the fixing system and the standard masses (22) have a single degree of freedom along the Z axis (vertical axis) making thus a vertical oscillatory movement guided by the guide system (superimposed tubes with the use of a lubricant facilitating vertical displacement). The oscillations produced are generated due to causal factors related to the speed of the wheel, the quality of the coating profile as well as the quality of the mounted suspension system. When the test bench system starts up, the wheel exerts, during its progression, instantaneous forces on the roadway, the modulus of which depends on the causal factors mentioned above, and consequently on the piezoelectric sensors installed. The signals emitted by these sensors are acquired by an electronic card housed within the roller. The electrical signals captured by this board are transferred using a wireless radio wave communication system, which are picked up by another electronic board that is located outside the test bench in a suitable location. The latter card is responsible for carrying out the necessary processing and performing the algorithms required in order to measure the static load and the overall weight of vehicles. iii. Brief description of the diagrams
- Figurel : Le schéma décrit le banc d’essai-partie puissance (Vue côté gauche du modèle) ; - Figure: The diagram describes the power part-test bench (left side view of the model);
- Figure 2 : Le schéma décrit le banc d’essai-partie puissance (Vue de face du modèle) ; - Figure 2: The diagram describes the power section test bench (Front view of the model);
- Figure 3 : Le schéma figure les éléments de la partie commande du banc d’essai.
- Figure 3: The diagram shows the elements of the control part of the test bench.
Claims
Revendications Claims
1 ) Le banc d’essai relatif au système de pesage dynamique en marche à haute vitesse caractérisé en ce que le banc d’essai est un dispositif dédié à la vérification, par les chercheurs en laboratoire, les fonctionnalités des systèmes de pesage dynamique en marche à haute vitesse réalisés en prototype. Il permet aussi de mesurer la charge statique et le poids global de véhicules. Il comprend les éléments suivants : 1) The test bench relating to the dynamic weighing system in operation at high speed characterized in that the test bench is a device dedicated to the verification, by laboratory researchers, of the functionalities of dynamic weighing systems in operation at high speed produced as a prototype. It also makes it possible to measure the static load and the overall weight of vehicles. It includes the following elements:
Partie puissance : Power part:
- Un moteur électrique asynchrone ; - An asynchronous electric motor;
- Un galet réalisé en plaque métallique sous forme d’un cylindre creux, représentant la structure de la chaussée ; - A roller made of metal plate in the form of a hollow cylinder, representing the structure of the road;
- Une couche de revêtement collée sur le contour du galet ; - A coating layer glued to the contour of the roller;
- Des rainures constituées par des socles en aluminium de forme U, incorporées transversalement dans le revêtement de la chaussée qui permettent de loger les capteurs piézoélectriques ; - Grooves made up of U-shaped aluminum plinths, incorporated transversely in the pavement covering, which allow the piezoelectric sensors to be housed;
- Une roue (pneu monté sur une jante) ; - A wheel (tire mounted on a rim);
- Deux ressort- amortisseurs constituant le système de suspension - Two shock absorbers spring constituting the suspension system
- Des organes de transmission de puissance entre le moteur et le galet ; une chaîne métallique et deux pignons, l’un est solidaire à l’axe du moteur et l’autre à l’axe du galet ; - Power transmission components between the engine and the roller; a metal chain and two sprockets, one attached to the motor axle and the other to the roller axle;
- Une structure métallique de guidage et de maintien ; - A metallic guide and support structure;
- Des masses étalons (22) calibrées de 5kg chacune ; - Standard masses (22) calibrated of 5 kg each;
- Un socle métallique sur lequel le système est monté. - A metal base on which the system is mounted.
Partie commande : Command part:
- Un variateur de vitesse triphasé ; - A three-phase variable speed drive;
- Un disjoncteur magnétothermique ; - A magnetothermal circuit breaker;
- Un tachymètre pouvant mesurer la vitesse linéaire allant de 0 à 100 km/h ;- A tachometer capable of measuring linear speed from 0 to 100 km / h;
- Une dizaine de mètres de file électrique (8) de 3 phases et terre ; - About ten meters of electrical line (8) of 3 phases and earth;
- Des interrupteurs de courant d’alimentation ; - Power supply switches;
- Un port de communication avec la carte électronique logée au sein du galet.
2) Le banc d’essai relatif au système de pesage dynamique en marche à haute vitesse, selon la revendication 1 , caractérisé en ce que le banc d’essai est entraîné au moyen d’un moteur électrique asynchrone dont la vitesse maximale de rotation permet de varier la vitesse linéaire de la roue, placée sur le galet, dans la plage des vitesses comprises entre 0 et 100km/h ; - A communication port with the electronic card housed within the roller. 2) The test bench relating to the dynamic weighing system in operation at high speed, according to claim 1, characterized in that the test bench is driven by means of an asynchronous electric motor whose maximum speed of rotation allows to vary the linear speed of the wheel, placed on the roller, in the speed range between 0 and 100 km / h;
3) Le banc d’essai relatif au système de pesage dynamique en marche à haute vitesse, selon la revendication 1 , caractérisé en ce que le galet, fabriqué en plaque métallique sous forme d’un cylindre creux, représente la structure de la chaussée dont le contour est couvert par un revêtement. Le mouvement de rotation du galet est assuré par le moteur asynchrone selon la revendication 2 à l’aide d’un système de transmission de puissance ; 3) The test bench relating to the dynamic weighing system in motion at high speed, according to claim 1, characterized in that the roller, made of metal plate in the form of a hollow cylinder, represents the structure of the roadway of which the outline is covered by a coating. The rotational movement of the roller is provided by the asynchronous motor according to claim 2 with the aid of a power transmission system;
4) Le banc d’essai relatif au système de pesage dynamique en marche à haute vitesse, selon la revendication 1 , caractérisé en ce que la transmission de puissance entre le moteur et le galet, respectivement selon les revendications 2 et 3, s’effectue au moyen d’une chaîne métallique montée sur deux pignons, solidaires au moteur et au galet. Le rapport de transmission est fixé de telle manière à transmettre la puissance nécessaire pour que la roue, maintenue sur le galet selon la revendication 3, puisse atteindre une vitesse linéaire comprise entre 0 à 100km/h ; 4) The test bench relating to the dynamic weighing system in motion at high speed, according to claim 1, characterized in that the power transmission between the motor and the roller, respectively according to claims 2 and 3, is effected by means of a metal chain mounted on two pinions, integral with the motor and the roller. The transmission ratio is fixed in such a way as to transmit the power necessary so that the wheel, held on the roller according to claim 3, can reach a linear speed of between 0 to 100 km / h;
5) Le banc d’essai relatif au système de pesage dynamique en marche à haute vitesse, selon la revendication 1 , caractérisé en ce que des rainures constituées par des socles en alliage de forme U qui sont incorporées transversalement dans le revêtement, selon la revendication 3. Ces rainures sont fixées sur le contour du galet pour permettre de loger les capteurs piézoélectriques ; 5) The test bench relating to the dynamic weighing system in motion at high speed, according to claim 1, characterized in that the grooves formed by U-shaped alloy bases which are incorporated transversely in the coating, according to claim 3. These grooves are fixed on the contour of the roller to accommodate the piezoelectric sensors;
6) Le banc d’essai relatif au système de pesage dynamique en marche à haute vitesse, selon les revendications 1 et 4, caractérisé en ce que le véhicule est réduit à une roue (pneu monté sur une jante), montée sur un système de suspension formé de deux kits de ressort-amortisseur ; 6) The test bench relating to the dynamic weighing system in motion at high speed, according to claims 1 and 4, characterized in that the vehicle is reduced to a wheel (tire mounted on a rim), mounted on a system of suspension formed from two shock absorber spring kits;
7) Le banc d’essai relatif au système de pesage dynamique en marche à haute vitesse, selon la revendication 6, caractérisé en ce que le bloc formé de la roue et du système de suspension est assemblé à l’aide d’un système de fixation (une structure métallique). Lequel système de fixation assure le maintien du bloc sur la chaussée (contour du galet) et le guidage du mouvement du bloc selon l’axe vertical ;
8) Le banc d’essai relatif au système de pesage dynamique en marche à haute vitesse, selon la revendication 1 , caractérisé en ce qu’un boulon dont la vis est solidaire au système de fixation, selon la revendication 7, et sur laquelle des masses étalons (22) calibrées, selon la masse totale voulue, sont posées et retenues à l’aide de l’écrou ; 7) The test bench relating to the dynamic weighing system in motion at high speed, according to claim 6, characterized in that the block formed of the wheel and the suspension system is assembled using a system of fixing (a metal structure). Which fixing system ensures the maintenance of the block on the roadway (contour of the roller) and the guiding of the movement of the block along the vertical axis; 8) The test bench relating to the dynamic weighing system running at high speed, according to claim 1, characterized in that a bolt, the screw of which is integral with the fixing system, according to claim 7, and on which standard masses (22) calibrated, according to the desired total mass, are placed and retained using the nut;
9) Le banc d’essai relatif au système de pesage dynamique en marche à haute vitesse, selon la revendication 1 , caractérisé en ce que la vitesse linéaire de la roue, selon la revendication 6, varie selon la vitesse de rotation du moteur, selon la revendication 2, laquelle vitesse de rotation est pilotée par le variateur de vitesse selon le choix de l’utilisateur ; 9) The test bench relating to the dynamic weighing system running at high speed, according to claim 1, characterized in that the linear speed of the wheel, according to claim 6, varies according to the rotational speed of the engine, according to Claim 2, which speed of rotation is controlled by the variable speed drive according to the user's choice;
10) Le banc d’essai relatif au système de pesage dynamique en marche à haute vitesse, selon la revendication 1 , caractérisé en ce que la vitesse linéaire de la roue, selon la revendication 6, est mesurée au moyen d’un tachymètre dont le capteur est fixé sur l’axe du galet dans sa partie interne. La communication entre le capteur et le moniteur du tachymètre est assurée par une communication sans fil.
10) The test bench relating to the dynamic weighing system in motion at high speed, according to claim 1, characterized in that the linear speed of the wheel, according to claim 6, is measured by means of a tachometer whose sensor is fixed on the axis of the roller in its internal part. Communication between the sensor and the tachometer monitor is provided by wireless communication.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| MA50052A MA50052B1 (en) | 2020-06-12 | 2020-06-12 | Test bench relating to the dynamic weighing-in-motion system at high speed intended for the measurement of the static load of the axles and the overall weight of vehicles. |
| MA50052 | 2020-06-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2021251810A1 true WO2021251810A1 (en) | 2021-12-16 |
Family
ID=76943066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/MA2021/000010 WO2021251810A1 (en) | 2020-06-12 | 2021-06-11 | Test bench relating to a dynamic weighing system which operates at high speed and which is designed for measuring the static load of the axles and the total weight of vehicles |
Country Status (2)
| Country | Link |
|---|---|
| MA (1) | MA50052B1 (en) |
| WO (1) | WO2021251810A1 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1404673A (en) * | 1972-08-03 | 1975-09-03 | Gnii Mashinovedeniya | Method of determing the frictional and mechanical properties of materials and apparatus for putting the method into practise |
| DE19505533A1 (en) * | 1995-02-18 | 1996-08-22 | Teves Gmbh Alfred | Test unit with improved simulation quality for realistic testing of the driving dynamics of motor vehicles |
| US20180245970A1 (en) * | 2017-02-28 | 2018-08-30 | Kistler Holding Ag | Apparatus and method for calibrating a weigh-in-motion sensor |
-
2020
- 2020-06-12 MA MA50052A patent/MA50052B1/en unknown
-
2021
- 2021-06-11 WO PCT/MA2021/000010 patent/WO2021251810A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1404673A (en) * | 1972-08-03 | 1975-09-03 | Gnii Mashinovedeniya | Method of determing the frictional and mechanical properties of materials and apparatus for putting the method into practise |
| DE19505533A1 (en) * | 1995-02-18 | 1996-08-22 | Teves Gmbh Alfred | Test unit with improved simulation quality for realistic testing of the driving dynamics of motor vehicles |
| US20180245970A1 (en) * | 2017-02-28 | 2018-08-30 | Kistler Holding Ag | Apparatus and method for calibrating a weigh-in-motion sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| MA50052A1 (en) | 2021-12-31 |
| MA50052B1 (en) | 2022-03-31 |
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