EP0638876A1 - Method and device for controlling a mobile machine - Google Patents

Method and device for controlling a mobile machine Download PDF

Info

Publication number
EP0638876A1
EP0638876A1 EP94490037A EP94490037A EP0638876A1 EP 0638876 A1 EP0638876 A1 EP 0638876A1 EP 94490037 A EP94490037 A EP 94490037A EP 94490037 A EP94490037 A EP 94490037A EP 0638876 A1 EP0638876 A1 EP 0638876A1
Authority
EP
European Patent Office
Prior art keywords
parameters
mobile machine
measurements
correlation
deformations
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP94490037A
Other languages
German (de)
French (fr)
Other versions
EP0638876B1 (en
Inventor
Roger Boinet
Philippe Popieul
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AINF SA
Original Assignee
AINF SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by AINF SA filed Critical AINF SA
Publication of EP0638876A1 publication Critical patent/EP0638876A1/en
Application granted granted Critical
Publication of EP0638876B1 publication Critical patent/EP0638876B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C15/00—Safety gear
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C3/00—Registering or indicating the condition or the working of machines or other apparatus, other than vehicles

Definitions

  • the present invention relates to a method of controlling a mobile machine, such as in particular an overhead crane, and a device for its implementation which will find its application in all sectors of economic activity in which one must to use such machines.
  • overhead traveling cranes consist of a frame comprising box springs connected by at least one beam, capable of being moved in a translational movement along lines formed by rails which delimit a raceway, and which support a carriage, able to be moved in a directional movement, on which lifting means are arranged.
  • the object of the present invention is to remedy these drawbacks by providing a method of controlling a mobile machine, such as in particular an overhead crane which makes it possible to determine with precision the state of said bridge and thus to avoid the risks of malfunction.
  • Another advantage of the method for controlling a mobile machine lies in the fact that it is simple to implement and that it makes it possible to obtain good results whatever the conditions of use.
  • Another advantage of the control method of a mobile machine according to the invention lies in the fact that it can be used to determine the state of a mobile machine regardless of its nature and its own characteristics, which increases it. its capacity for use.
  • An advantage of the device for the implementation of the control method according to the invention lies in the fact that it consists mainly of removable means which allows its use on many sites of use.
  • the subject of the present invention is a method for controlling a mobile machine, such as in particular an overhead crane, and a device for its implementation which will find its application in all sectors of industrial activity in which it is necessary to have recourse to such mobile machines for lifting and moving loads.
  • an overhead crane 1 which has two rows 2 and 3 each consisting of a guide rail having a suitable shape and which defines a raceway. On these raceways are mounted movable in translation by means of the rollers 6, motors or carriers, in a direction parallel to Ox in the direction of the arrow F1, a frame 20 consisting of two box springs 4 and 5 connected by beams 8 and 9.
  • each bed 4 and 5 comprises a motor roller 6 and a carrier roller 6.
  • a motor 7 is arranged on each of them and it has power characteristics adapted according to needs so as to ensure a desired operation of the overhead crane.
  • These motors 7 also include control means that can be actuated by means of appropriate means as well as brakes associated with an end of stroke.
  • the two beams 8 and 9 define guide rails for a carriage 10 formed by an assembly of side members 10a and crossbeams 10b.
  • This carriage 10 is, moreover, mounted mobile on these beams 8 and 9 in translation in a directional movement in the direction of the arrow F2 parallel to the axis oy by means of rollers 11 motors and carriers associated with motors 12 having characteristics of appropriate power.
  • This carriage 10 also includes lifting means 13, of conventional and known type, such as for example a hook or any other equivalent means adapted to the load which it is desired to lift and transport, which are mounted movable in the direction of the arrow F3 parallel to the axis Oz.
  • lifting means 13 of conventional and known type, such as for example a hook or any other equivalent means adapted to the load which it is desired to lift and transport, which are mounted movable in the direction of the arrow F3 parallel to the axis Oz.
  • this bridge 1 is equipped with means 14 for measuring characteristic parameters of the mobile machine giving the image of the forces, deformations and of the energy consumed at a given instant. More precisely, these means 14 measure the stresses in the bed bases 4, 5, the deformations in a horizontal and vertical plane of the angle between the beam 8, 9 and the bed bases 4, 5 and the intensity of the drive motors 7 box springs 4 and 5.
  • this device comprises strain gauges 15, of a conventional and known type, for determining the variations in the stresses which are exerted at the level of the bed bases 4 and 5.
  • each of the bed bases 4 and 5 is arranged on each of the bed bases 4 and 5 at determined locations and are intended to be used with a laser, of a conventional and known type emitting light radiation in an appropriate frequency range.
  • amperometric clamps 17 are associated with each of these.
  • the device according to the invention comprises also means for processing 18 these measurements constituted by a recorder, such as for example that marketed under the name "Windograf", associated with data processing means comprising at least one memory associated with computer means connected to display means and information management such as for example a keyboard and a console.
  • a recorder such as for example that marketed under the name "Windograf”
  • data processing means comprising at least one memory associated with computer means connected to display means and information management such as for example a keyboard and a console.
  • these means 18 for processing information operate according to a flow chart adapted to allow rapid and reliable processing of said information, and in particular a correlation and a comparison of the measurements of the various parameters.
  • this control method consists in determining the specific characteristics of the bridge by measuring parameters, such as in particular the stresses in a bed base, the horizontal and vertical deformations of the angle between the bed bases 4, 5 and the beams 8, 9 as well as the intensity of each motor 7 for driving the bed bases 4 and 5.
  • parameters such as in particular the stresses in a bed base, the horizontal and vertical deformations of the angle between the bed bases 4, 5 and the beams 8, 9 as well as the intensity of each motor 7 for driving the bed bases 4 and 5.
  • a "signature" of the bridge is determined in a way making it possible to know these characteristics before it is put into operation or after a certain number of hours of use.
  • the same measurement is made of at least the same parameters, on the bridge when the latter is in the active phase, and a correlation and comparison of the result of these measurements is established with the established values incorporating the characteristics. clean the bridge to determine its condition.
  • this bridge has faults resulting from improper use, and which are likely to generate a stop in its operation, which increases safety in use.
  • the values in the active phase are acquired during the accelerations and decelerations of the overhead crane when the crane supports specific loads, which makes it possible in particular to check whether its start-up takes place in good conditions.
  • a certain amount of information and data concerning these parameters is also stored in order to be able to follow the revolutions over time according to a determined sequence and thus to predict, the possible faults likely to occur in terms of operation. of the overhead crane.
  • FIG. 2 illustrates the variations in the difference in current consumption of the motors 7 of each queue 2 and 3.
  • FIG. 3 illustrates the variations ⁇ x in the horizontal plane of the angle formed between the beams 8 and 9 and the box springs 4 and 5. It is observed, on this curve, for an event To corresponding to a difference in current consumption , an advance ⁇ tx of the deformation of the angle in the horizontal plane with respect to the variation of the difference in current consumption between the motors 7 of each row 2 and 3.
  • FIG. 4 which represents the variation of the deformation in a vertical plane of the angle between the beams 8 and 9 and the box springs 4 and 5, there is a delay ⁇ tz of this deformation of the angle by compared to the variation ⁇ to of the difference in current consumption between the motors 7 of each queue 2 and 3.
  • the flowchart of the invention selects the event points on each of these three curves and memorizes for each event the variations ⁇ i, ⁇ I, ⁇ z ⁇ tx and ⁇ tz and makes a correlation of these events.
  • the processing means of the invention make it possible to determine a diagnosis on the evolution of the events likely to occur over time, in particular by a correlation of these measurements.
  • FIG. 5 shows the variation ⁇ I of the difference in current consumption of the motors 7 between the lines 2 and 3.
  • the difference in consumption ⁇ I of the motors 7 between the queues 2 and 3 has a curve such as that which is more particularly illustrated in FIG. 7, and if on the other hand ⁇ x is different from zero and ⁇ z equals zero, this corresponds to a flatness defect between the rails of each row 2 and 3.
  • the processing means according to the invention also make it possible to obtain an estimate parameters and in particular, when the variations ⁇ z ⁇ y corresponding to the variations of the stresses are determined, since this makes it possible to appreciate the solidity of the bed bases 4 and 5 as well as their resistance to fatigue with regard to the frequency of variation of these stresses.
  • the processing means make it possible, by calculation, to determine the forces exerted which, when they are reduced to the overall structure of the bridge, make it possible to calculate the variations of the mechanical horizontal moments likely to occur in the entire structure and therefore, to determine the corresponding stress level.

Abstract

Method for controlling a mobile machine, such as in particular a travelling crane (1) including a framework (4, 5, 8, 9, 20) which can be moved in a translational motion along runway tracks (2, 3) on which are arranged lifting means (13). According to the invention: - parameters characteristic of the mobile machine are recorded, giving a picture of the loads, deformations and energy expended at a given instant, - at least the same parameters are measured in the active phase, - a correlation is established between these measurements, and the result of the measurements in the active phase is compared with this correlation so as to record the objective time derivatives of the parameters. The subject of the invention is also a device for the implementation of the method. <IMAGE>

Description

La présente invention a pour objet un procédé de contrôle d'une machine mobile, telle que notamment un pont roulant, et un dispositif pour sa mise en oeuvre qui trouvera son application dans tous les secteurs de l'activité économique dans lesquels l'on doit avoir recours à de telles machines.The present invention relates to a method of controlling a mobile machine, such as in particular an overhead crane, and a device for its implementation which will find its application in all sectors of economic activity in which one must to use such machines.

C'est ainsi, qu'il est connu d'utiliser des ponts roulants dans de nombreux domaines industriels pour assurer le soulèvement et le transport de charges pouvant être relativement encombrantes et d'un poids important.It is thus that it is known to use overhead cranes in many industrial fields to ensure the lifting and transport of loads which can be relatively bulky and of significant weight.

Actuellement, les ponts roulants sont constitués par un bâti comportant des sommiers reliés par au moins une poutre, aptes à être déplacés selon un mouvement de translation le long de files constituées par des rails qui délimitent un chemin de roulement, et qui supportent un chariot, apte à être déplacé selon un mouvement de direction, sur lequel sont agencés des moyens de levage.Currently, overhead traveling cranes consist of a frame comprising box springs connected by at least one beam, capable of being moved in a translational movement along lines formed by rails which delimit a raceway, and which support a carriage, able to be moved in a directional movement, on which lifting means are arranged.

Etant données les contraintes exercées sur ces ponts roulants, il est nécessaire d'effectuer régulièrement, des contrôles techniques des différentes parties le constituant et plus précisément, en ce qui concerne la linéarité des chemins de roulement ainsi que la vérification géométrique de l'alignement des deux files. Il est également nécessaire, de procéder, à la vérification des moteurs destinés à permettre l'entraînement du chariot, ainsi que des fins de course.Given the constraints exerted on these overhead traveling cranes, it is necessary to regularly carry out technical checks of the various parts making it up and more precisely, as regards the linearity of the raceways as well as the geometric verification of the alignment of the two lines. It is also necessary to proceed with the verification of the motors intended to allow the carriage to drive, as well as the limit switches.

Par ailleurs, la législation impose des contrôles spécifiques qui doivent être respectés en ce qui concerne le fonctionnement de tels ponts roulants et leur chemin de roulement mais qui, en pratique, ne sont pas toujours adaptés notamment dans le cas de ponts roulants présentant des portées relativement importantes ou des empattements réduits.In addition, the legislation imposes specific controls which must be respected with regard to the functioning of such overhead traveling cranes and their raceway but which, in practice, are not always suitable in particular in the case of overhead traveling cranes having relatively spans large or reduced wheelbases.

Malgré le plus grand soin apporté au contrôle technique, il n'est pas possible, de déterminer avec précision, l'état dans lequel se trouve le pont roulant notamment en ce qui concerne certains défauts ou anomalies pouvant entraîner un disfonctionnement important du pont roulant ou du chemin de roulement.Despite the greatest care taken with technical control, it is not possible to determine with precision the state in which the crane is located, in particular with regard to certain faults or anomalies that could cause significant malfunction of the bridge. rolling or raceway.

Plus précisément, cette vérification est d'autant plus délicate à effectuer que les ponts roulants présentent de nombreux organes susceptibles de présenter des défauts de fonctionnement qui ne sont pas toujours décelables au cours des visites de contrôle périodique.More precisely, this verification is all the more difficult to perform since the overhead traveling cranes have numerous members capable of exhibiting operational faults which are not always detectable during periodic inspection visits.

La présente invention a pour but de remédier à ces inconvénients en fournissant un procédé de contrôle d'une machine mobile, telle que notamment un pont roulant qui permet de déterminer avec précision l'état du dit pont et ainsi, d'éviter les risques de disfonctionnement.The object of the present invention is to remedy these drawbacks by providing a method of controlling a mobile machine, such as in particular an overhead crane which makes it possible to determine with precision the state of said bridge and thus to avoid the risks of malfunction.

Un autre avantage du procédé de contrôle d'une machine mobile, conforme à l'invention, réside dans le fait qu'il est simple à mettre en oeuvre et qu'il permet d'obtenir de bons résultats quelles que soient les conditions d'utilisation.Another advantage of the method for controlling a mobile machine, in accordance with the invention, lies in the fact that it is simple to implement and that it makes it possible to obtain good results whatever the conditions of use.

Un autre avantage du procédé de contrôle d'une machine mobile conforme à l'invention réside dans le fait qu'il peut être utilisé pour déterminer l'état d'une machine mobile quelle que soit sa nature et ses caractéristiques propres ce qui en accroît ses capacités d'utilisation.Another advantage of the control method of a mobile machine according to the invention lies in the fact that it can be used to determine the state of a mobile machine regardless of its nature and its own characteristics, which increases it. its capacity for use.

Un avantage du dispositif pour la mise en oeuvre du procédé de contrôle conforme à l'invention réside dans le fait qu'il est constitué en majeure partie de moyens amovibles ce qui permet son utilisation sur de nombreux sites d'utilisation.An advantage of the device for the implementation of the control method according to the invention lies in the fact that it consists mainly of removable means which allows its use on many sites of use.

D'autres buts et avantages de la présente invention apparaîtront au cours de la description qui va suivre qui n'est donnée qu'à titre indicatif et qui n'a pas pour but de la limiter.Other objects and advantages of the present invention will appear during the description which follows which is given only for information and which is not intended to limit it.

A cet effet, le procédé de contrôle d'une machine mobile, telle que notamment un pont roulant, comportant un bâti, apte à être déplacé selon un mouvement de translation le long de files de chemin de roulement, sur lequel sont agencés des moyens de levage, est caractérisé par le fait que :

  • on relève des paramètres caractéristiques de la machine mobile donnant l'image des efforts, des déformations et de l'énergie consommée à un instant donné,
  • on mesure en phase active au moins les mêmes paramètres,
  • on établit une corrélation entre ces mesures et on compare le résultat des mesures en phase active avec cette corrélation pour relever les dérives objectives des paramètres dans le temps.
To this end, the method of controlling a mobile machine, such as in particular an overhead crane, comprising a frame, capable of being moved in a translational movement along the tracks of the raceway, on which are arranged means of lifting, is characterized by the fact that:
  • there are characteristic parameters of the mobile machine giving the image of the forces, deformations and energy consumed at a given time,
  • at least the same parameters are measured in the active phase,
  • a correlation is established between these measurements and the result of the measurements in active phase is compared with this correlation in order to note the objective drifts of the parameters over time.

L'invention a également pour objet un dispositif pour la mise en oeuvre du procédé de contrôle d'une machine mobile telle que notamment un pont roulant, caractérisé par le fait qu'il comprend :

  • des moyens pour mesurer des paramètres caractéristiques de la machine mobile donnant l'image des efforts, des déformations et de l'énergie consommée à un instant donné,
  • des moyens pour établir une corrélation et pour comparer le résultat des mesures avec cette corrélation pour relever les dérives objectives des paramètres dans le temps.
The subject of the invention is also a device for implementing the method for controlling a mobile machine such as in particular an overhead crane, characterized in that it comprises:
  • means for measuring characteristic parameters of the mobile machine giving the image of the forces, deformations and energy consumed at a given instant,
  • means for establishing a correlation and for comparing the result of the measurements with this correlation in order to detect the objective drifts of the parameters over time.

L'invention sera bien comprise à la lecture de la description suivante accompagnée des dessins en annexe parmi lesquels :

  • la figure 1 est une vue schématique en perspective qui illustre un pont roulant et ses différents mouvements dans l'espace,
  • la figure 2 est une courbe qui illustre, l'évolution de la variation de l'intensité des moteurs d'entraînement des sommiers du pont roulant en fonction du temps,
  • la figure 3 est une courbe qui illustre les variations de déplacement en translation horizontale δx des sommiers en fonction du temps,
  • la figure 4 est une courbe qui illustre les variations de déplacement vertical δz des sommiers en fonction du temps,
  • les figures 5 à 8 sont des courbes qui illustrent différentes variations de l'intensité des moteurs d'entraînement des sommiers en fonction du temps.
The invention will be clearly understood on reading the following description accompanied by the accompanying drawings, among which:
  • FIG. 1 is a schematic perspective view which illustrates an overhead crane and its various movements in space,
  • FIG. 2 is a curve which illustrates, the evolution of the variation of the intensity of the drive motors of the bed bases of the overhead crane as a function of time,
  • FIG. 3 is a curve which illustrates the variations in displacement in horizontal translation δx of the bed bases as a function of time,
  • FIG. 4 is a curve which illustrates the variations in vertical displacement δz of the bed bases as a function of time,
  • FIGS. 5 to 8 are curves which illustrate different variations in the intensity of the box spring drive motors as a function of time.

La présente invention a pour objet un procédé de contrôle d'une machine mobile, telle que notamment un pont roulant, et un dispositif pour sa mise en oeuvre qui trouvera son application dans tous les secteurs de l'activité industrielle dans lesquels il est nécessaire d'avoir recours à de telles machines mobiles pour soulever et déplacer des charges.The subject of the present invention is a method for controlling a mobile machine, such as in particular an overhead crane, and a device for its implementation which will find its application in all sectors of industrial activity in which it is necessary to have recourse to such mobile machines for lifting and moving loads.

Dans toute la description, on repèrera les différents mouvements par rapport à un trièdre orthonormé (O, x, y, z), de référence.Throughout the description, we will identify the different movements with respect to an orthonormal trihedron (O, x, y, z), of reference.

En se référant plus particulièrement à la figure 1, on voit un pont roulant 1 qui comporte deux files 2 et 3 constituées chacune par un rail de guidage présentant une forme adaptée et qui délimite un chemin de roulement. Sur ces chemins de roulement sont montés mobiles en translation par l'intermédiaire des galets 6, moteurs ou porteurs, selon une direction parallèle à Ox dans le sens de la flèche F₁, un bâti 20 constitué par deux sommiers 4 et 5 reliés par des poutres 8 et 9.Referring more particularly to Figure 1, we see an overhead crane 1 which has two rows 2 and 3 each consisting of a guide rail having a suitable shape and which defines a raceway. On these raceways are mounted movable in translation by means of the rollers 6, motors or carriers, in a direction parallel to Ox in the direction of the arrow F₁, a frame 20 consisting of two box springs 4 and 5 connected by beams 8 and 9.

Plus précisément, dans la forme de réalisation illustrée, ces galets 6 sont au nombre de quatre et, en outre chaque sommier 4 et 5 comporte un galet 6 moteur et un galet 6 porteur.More specifically, in the illustrated embodiment, these rollers 6 are four in number and, in addition, each bed 4 and 5 comprises a motor roller 6 and a carrier roller 6.

Bien entendu, le nombre de ces galets est variable en fonction des besoins.Of course, the number of these rollers is variable according to the needs.

Pour permettre l'entraînement des sommiers 4 et 5, un moteur 7 est agencé sur chacun d'entre eux et il présente des caractéristiques de puissance adaptées en fonction des besoins de manière à assurer un fonctionnement désiré du pont roulant.To allow the bed bases 4 and 5 to be driven, a motor 7 is arranged on each of them and it has power characteristics adapted according to needs so as to ensure a desired operation of the overhead crane.

Ces moteurs 7 comportent, également, des moyens de commande actionnables par l'intermédiaire de moyens appropriés ainsi que des freins associés à une fin de course.These motors 7 also include control means that can be actuated by means of appropriate means as well as brakes associated with an end of stroke.

Les deux poutres 8 et 9 délimitent des rails guides pour un chariot 10 constitué par un assemblage de longerons 10a et de traverses 10b.The two beams 8 and 9 define guide rails for a carriage 10 formed by an assembly of side members 10a and crossbeams 10b.

Ce chariot 10 est, en outre, monté mobile sur ces poutres 8 et 9 en translation selon un mouvement de direction dans le sens de la flèche F₂ parallèle à l'axe oy par l'intermédiaire de galets 11 moteurs et porteurs associés à des moteurs 12 présentant des caractéristiques de puissance appropriée.This carriage 10 is, moreover, mounted mobile on these beams 8 and 9 in translation in a directional movement in the direction of the arrow F₂ parallel to the axis oy by means of rollers 11 motors and carriers associated with motors 12 having characteristics of appropriate power.

Ce chariot 10 comporte également des moyens de levage 13, de type classique et connu, tels que par exemple à un crochet ou tout autre moyen équivalent adapté à la charge que l'on désire soulever et transporter, qui sont montés mobiles dans le sens de la flèche F₃ parallèlement à l'axe Oz.This carriage 10 also includes lifting means 13, of conventional and known type, such as for example a hook or any other equivalent means adapted to the load which it is desired to lift and transport, which are mounted movable in the direction of the arrow F₃ parallel to the axis Oz.

Selon l'invention, ce pont 1 est équipé de moyens 14 pour mesurer des paramètres caractéristiques de la machine mobile donnant l'image des efforts, des déformations et de l'énergie consommée à un instant donné. Plus précisément, ces moyens 14 mesurent les contraintes dans les sommiers 4, 5, les déformations dans un plan horizontal et vertical de l'angle entre la poutre 8, 9 et les sommiers 4, 5 et l'intensité des moteurs d'entraînement 7 des sommiers 4 et 5.According to the invention, this bridge 1 is equipped with means 14 for measuring characteristic parameters of the mobile machine giving the image of the forces, deformations and of the energy consumed at a given instant. More precisely, these means 14 measure the stresses in the bed bases 4, 5, the deformations in a horizontal and vertical plane of the angle between the beam 8, 9 and the bed bases 4, 5 and the intensity of the drive motors 7 box springs 4 and 5.

Pour cela, ce dispositif comporte des jauges extensométriques 15, d'un type classique et connu, pour déterminer les variations des contraintes qui s'exercent au niveau des sommiers 4 et 5.For this, this device comprises strain gauges 15, of a conventional and known type, for determining the variations in the stresses which are exerted at the level of the bed bases 4 and 5.

Par ailleurs, pour déterminer les variations dans un plan horizontal et vertical de l'angle entre les sommiers 4, 5 et les poutres 8, 9 des cellules photo-sensibles 16 sont disposées sur chacun des sommiers 4 et 5 à des emplacements déterminés et sont destinées à être utilisées avec un laser, d'un type classique et connu émettant des radiations lumineuses dans une gamme de fréquence appropriée.Furthermore, to determine the variations in a horizontal and vertical plane of the angle between the bed bases 4, 5 and the beams 8, 9 of the photo-sensitive cells 16 are arranged on each of the bed bases 4 and 5 at determined locations and are intended to be used with a laser, of a conventional and known type emitting light radiation in an appropriate frequency range.

Enfin, pour déterminer les variations d'intensité des moteurs 7, des pinces ampermétriques 17 sont associées à chacun de ceux-ci.Finally, to determine the variations in intensity of the motors 7, amperometric clamps 17 are associated with each of these.

Bien entendu, en fonction des besoins, il est également envisageable d'avoir recours à tout autre moyen permettant de déterminer les variations de ces paramètres ou bien, de tout autre paramètre apte à permettre une détermination de l'état du pont roulant.Of course, depending on requirements, it is also possible to use any other means making it possible to determine the variations of these parameters or else any other parameter capable of allowing a determination of the state of the overhead crane.

Le dispositif conforme à l'invention comporte également des moyens pour traiter 18 ces mesures constituées par un enregistreur, tel que par exemple celui commercialisé sous la dénomination "Windograf", associé à des moyens de traitement des données comportant au moins une mémoire associée à des moyens calculateurs connectés à des moyens de visualisation et de gestion des informations tels que par exemple un clavier et une console.The device according to the invention comprises also means for processing 18 these measurements constituted by a recorder, such as for example that marketed under the name "Windograf", associated with data processing means comprising at least one memory associated with computer means connected to display means and information management such as for example a keyboard and a console.

Plus précisément, selon l'invention, ces moyens 18 de traitement de l'information fonctionnent selon un organigramme adapté pour permettre un traitement rapide et fiable des dites informations, et notamment une corrélation et une comparaison des mesures des différents paramètres.More specifically, according to the invention, these means 18 for processing information operate according to a flow chart adapted to allow rapid and reliable processing of said information, and in particular a correlation and a comparison of the measurements of the various parameters.

Notamment, selon l'invention, ce procédé de contrôle consiste à déterminer les caractéristiques propres du pont en mesurant des paramètres, tels que notamment les contraintes dans un sommier, les déformations horizontales et verticales de l'angle entre les sommiers 4, 5 et les poutres 8, 9 ainsi que l'intensité de chaque moteur 7 d'entraînement des sommiers 4 et 5. A partir de ces informations, on détermine en quelque sorte une "signature" du pont permettant de connaître ces caractéristiques préalablement à sa mise en fonctionnement ou bien, après un certain nombre d'heures d'utilisation.In particular, according to the invention, this control method consists in determining the specific characteristics of the bridge by measuring parameters, such as in particular the stresses in a bed base, the horizontal and vertical deformations of the angle between the bed bases 4, 5 and the beams 8, 9 as well as the intensity of each motor 7 for driving the bed bases 4 and 5. On the basis of this information, a "signature" of the bridge is determined in a way making it possible to know these characteristics before it is put into operation or after a certain number of hours of use.

Selon l'invention, on réalise une même mesure d'au moins les mêmes paramètres, sur le pont lorsque celui-ci est en phase active, et on établit une corrélation et une comparaison du résultat de ces mesures avec les valeurs établies reprenant les caractéristiques propres du pont afin de déterminer son état.According to the invention, the same measurement is made of at least the same parameters, on the bridge when the latter is in the active phase, and a correlation and comparison of the result of these measurements is established with the established values incorporating the characteristics. clean the bridge to determine its condition.

Notamment, grâce à ces différentes mesures, on peut déterminer si, ce pont présente des défauts résultant d'une mauvaise utilisation, et qui sont susceptibles de générer un arrêt de son fonctionnement, ce qui accroît la sureté d'utilisation.In particular, thanks to these various measures, it can be determined whether, this bridge has faults resulting from improper use, and which are likely to generate a stop in its operation, which increases safety in use.

Pour obtenir des meilleures mesures, on effectue l'acquisition des valeurs en phase active au cours des accélérations et des deccélérations du pont roulant lorsque celui-ci supporte des charges déterminées, ce qui permet notamment de vérifier si sa mise en fonctionnement s'effectue dans de bonnes conditions.To obtain better measurements, the values in the active phase are acquired during the accelerations and decelerations of the overhead crane when the crane supports specific loads, which makes it possible in particular to check whether its start-up takes place in good conditions.

Par ailleurs, l'on prévoit une représentation graphique des variations dans le temps de ces différents paramètres, tels que cela est plus particulièrement illustré aux figures 3 à 5 et, une sélection d'évènements de référence sur ces courbes qui constitue en quelque sorte, des points de rupture que le dispositif ne doit pas atteindre.Furthermore, a graphical representation of the variations over time of these different parameters is provided, as is more particularly illustrated in FIGS. 3 to 5 and, a selection of reference events on these curves which constitutes in a way, breaking points that the device must not reach.

On prévoit également une mise en mémoire d'un certain nombre d'informations et de données concernant ces paramètres afin de pouvoir suivre les révolutions dans le temps selon une séquence déterminée et ainsi de prévoir, les défauts éventuels susceptibles de se produire au niveau du fonctionnement du pont roulant.A certain amount of information and data concerning these parameters is also stored in order to be able to follow the revolutions over time according to a determined sequence and thus to predict, the possible faults likely to occur in terms of operation. of the overhead crane.

Précisément, la figure 2 illustre les variations de l'écart de consommation en courant des moteurs 7 de chaque file 2 et 3.Specifically, FIG. 2 illustrates the variations in the difference in current consumption of the motors 7 of each queue 2 and 3.

La figure 3 illustre les variations δx dans le plan horizontal de l'angle formé entre les poutres 8 et 9 et les sommiers 4 et 5. L'on observe, sur cette courbe, pour un évènement To correspondant à un écart de consommation en courant, une avance δtx de la déformation de l'angle dans le plan horizontal par rapport à la variation de l'écart de consommation en courant entre les moteurs 7 de chaque file 2 et 3.FIG. 3 illustrates the variations δx in the horizontal plane of the angle formed between the beams 8 and 9 and the box springs 4 and 5. It is observed, on this curve, for an event To corresponding to a difference in current consumption , an advance δtx of the deformation of the angle in the horizontal plane with respect to the variation of the difference in current consumption between the motors 7 of each row 2 and 3.

En se référant à la figure 4, qui représente la variation de la déformation dans un plan vertical de l'angle entre les poutres 8 et 9 et les sommiers 4 et 5, on observe, un retard δtz de cette déformation de l'angle par rapport à la variation δto de l'écart de consommation en courant entre les moteurs 7 de chaque file 2 et 3.Referring to FIG. 4, which represents the variation of the deformation in a vertical plane of the angle between the beams 8 and 9 and the box springs 4 and 5, there is a delay δtz of this deformation of the angle by compared to the variation δto of the difference in current consumption between the motors 7 of each queue 2 and 3.

Bien entendu, il pourrait également se produire, un retard de la déformation de l'angle δtx dans le plan horizontal et une avance δtz de la déformation de l'angle dans le plan vertical pour un évènement se produisant à l'instant to correspondant à un écart δI de consommation en courant des moteurs 7 des files 2 et 3.Of course, it could also occur, a delay in the deformation of the angle δtx in the horizontal plane and an advance δtz of the deformation of the angle in the vertical plane for an event occurring at time to corresponding to a difference δI in current consumption of the motors 7 of lines 2 and 3.

L'organigramme de l'invention sélectionne les points évènements sur chacune de ces trois courbes et mémorise pour chaque évènement les variations δi, δI, δz δtx et δtz et fait une corrélation de ces évènements.The flowchart of the invention selects the event points on each of these three curves and memorizes for each event the variations δi, δI, δz δtx and δtz and makes a correlation of these events.

Selon l'invention, pour un évènement t reproduisant un instant t > td, sa représentation graphique est déterminée par :

  • l'équation X = Xo + V (t - td/2) avec
  • Xo qui représente la position d'origine du pont lors des mesures,
  • V la vitesse de translation du pont qui est déterminée par le constructeur,
  • td le temps de démarrage des moteurs qui est quant à lui déterminé par l'intermédiaire de mesures préalables.
According to the invention, for an event t reproducing an instant t> td, its graphic representation is determined by:
  • the equation X = Xo + V (t - t d / 2) with
  • Xo which represents the original position of the bridge during the measurements,
  • V the translation speed of the bridge which is determined by the manufacturer,
  • td the engine start-up time which is determined by means of preliminary measurements.

A partir de cette représentation graphique, les moyens de traitement de l'invention permettent de déterminer un diagnostic sur l'évolution des évènements susceptibles de se produire dans le temps, notamment par une corrélation de ces mesures.From this graphic representation, the processing means of the invention make it possible to determine a diagnosis on the evolution of the events likely to occur over time, in particular by a correlation of these measurements.

A titre d'exemple, on a représenté à la figure 5 la variation δI de l'écart de consommation en courant des moteurs 7 entre les files 2 et 3.By way of example, FIG. 5 shows the variation δI of the difference in current consumption of the motors 7 between the lines 2 and 3.

Si comme illustré sur cette figure 5, δti présente un pallier brutal, ou comme illustré à la figure 6 δi présente une oscillation et si, par ailleurs, δx est différent de zéro et δz égale zéro, cela correspond à un défaut d'alignement des rails des files 2-3..If as illustrated in this figure 5, δti presents a brutal leveling, or as illustrated in figure 6 δi presents an oscillation and if, on the other hand, δx is different from zero and δz equals zero, this corresponds to a misalignment of the rails of lines 2-3 ..

Si par contre, l'écart de consommation δI des moteurs 7 entre les files 2 et 3 présente une courbe telle que celle qui est plus particulièrement illustrée à la figure 7, et si par ailleurs δx est différent de zéro et δz égal zéro, cela correspond à un défaut de planéïté entre les rails de chaque file 2 et 3.If on the other hand, the difference in consumption δI of the motors 7 between the queues 2 and 3 has a curve such as that which is more particularly illustrated in FIG. 7, and if on the other hand δx is different from zero and δz equals zero, this corresponds to a flatness defect between the rails of each row 2 and 3.

Enfin, si l'écart δI de consommation en courant des moteurs 7 entre les files 2 et 3 présente des méplats et si δz égal zéro et δz égal à zéro, il s'agit cette fois-ci d'un défaut de nivellement entre les rails de chaque file 2 et 3.Finally, if the difference δI in current consumption of the motors 7 between the lines 2 and 3 has flats and if δz equals zero and δz equals zero, this time it is a leveling fault between the rails of each row 2 and 3.

Les moyens de traitement conforme à l'invention permettent également d'obtenir une estimation des paramètres et notamment, lorsque les variations δΣz δΣy correspondant aux variations des contraintes sont déterminées, puisque cela permet d'apprécier la solidité des sommiers 4 et 5 ainsi que leur tenue en fatigue au regard de la fréquence de variation de ces contraintes.The processing means according to the invention also make it possible to obtain an estimate parameters and in particular, when the variations δΣz δΣy corresponding to the variations of the stresses are determined, since this makes it possible to appreciate the solidity of the bed bases 4 and 5 as well as their resistance to fatigue with regard to the frequency of variation of these stresses.

Par ailleurs, la connaissance de ces contraintes permet également de déterminer les variations d'efforts qui se produisent au niveau des galets moteurs ou porteurs et de ce fait, de connaître les éventuelles zones des files 2 et 3 susceptibles de présenter des défauts ou des défaillances.Furthermore, knowledge of these constraints also makes it possible to determine the variations in force which occur at the level of the drive or carrier rollers and therefore to know the possible zones of the rows 2 and 3 liable to present faults or failures. .

Par ailleurs, les moyens de traitement permettent par un calcul, de déterminer des efforts exercés qui, lorsqu'ils sont ramenés à la structure globale du pont permettent de calculer les variations des moments horizontaux mécaniques suceptibles de se produire dans toute la structure et donc, de déterminer le niveau de contrainte correspondant.Furthermore, the processing means make it possible, by calculation, to determine the forces exerted which, when they are reduced to the overall structure of the bridge, make it possible to calculate the variations of the mechanical horizontal moments likely to occur in the entire structure and therefore, to determine the corresponding stress level.

Ainsi, l'on peut déterminer, l'état d'endommagement de la structure du pont à un instant déterminé, et la comparaison avec des informations et des données préalablement enregistrées permettent de déterminer l'évolution de cette structure dans le temps. On peut donc envisager et extrapoler les éventuels risques de rupture ou de panne du pont roulant.Thus, it is possible to determine the state of damage to the structure of the bridge at a determined time, and the comparison with information and data previously recorded make it possible to determine the evolution of this structure over time. We can therefore consider and extrapolate the possible risks of breakage or breakdown of the crane.

Bien entendu, d'autres mises en oeuvre de la présente invention, auraient pu être envisagées sans pour autant sortir du cadre de celle-ci.Of course, other implementations of the present invention could have been envisaged without departing from the scope thereof.

Claims (10)

Procédé de contrôle d'une machine mobile, telle que notamment un pont roulant (1), comportant un bâti (4, 5, 8, 9, 20) apte à être déplace selon un mouvement de translation le long de files (2, 3) de chemin de roulement, sur lequel sont agencés des moyens de levage (13), caractérisé en ce que : - on relève des paramètres caractéristiques de la machine mobile donnant l'image des efforts, des déformations et de l'énergie consommée à un instant donné, - on mesure, en phase active, au moins les mêmes paramètres, - on établit une corrélation entre ces mesures et on compare le résultat des mesures en phase active avec cette corrélation pour relever les dérives objectives des paramètres dans le temps. Method of controlling a mobile machine, such as in particular an overhead crane (1), comprising a frame (4, 5, 8, 9, 20) capable of being moved in a translational movement along rows (2, 3 ) of a raceway, on which lifting means (13) are arranged, characterized in that: there are characteristic parameters of the mobile machine giving the image of the forces, deformations and of the energy consumed at a given instant, - at least the same parameters are measured in the active phase, - a correlation is established between these measurements and the result of the measurements in active phase is compared with this correlation in order to identify the objective drifts of the parameters over time. Procédé de contrôle d'une machine mobile selon la revendication 1, appliqué à un pont roulant qui comporte un bâti constitué par deux sommiers (4, 5) reliés par une poutre (8, 9), caractérisé en ce que :
   - on mesure au moins les contraintes dans les sommiers (4, 5), les déformations dans un plan horizontal et vertical de l'angle entre la poutre (8 et 9) et les sommiers (4, 5) et l'intensité des moteurs d'entraînement (7) des sommiers (4, 5).Method of controlling a mobile machine according to claim 1, applied to an overhead crane which comprises a frame constituted by two bed bases (4, 5) connected by a beam (8, 9), characterized in that:
- at least the stresses in the bed bases (4, 5), the deformations in a horizontal and vertical plane of the angle between the beam (8 and 9) and the bed bases (4, 5) and the intensity of the motors are measured drive (7) of the box springs (4, 5). Procédé de contrôle selon la revendication 1, caractérisé en ce que l'on effectue les mesures en phase active au cours des accélérations et deccélérations du pont roulant (1).Control method according to claim 1, characterized in that the measurements are carried out in active phase during acceleration and deceleration of the crane (1). Procédé de contrôle selon la revendication 1, caractérisé en ce que l'on prévoit une représentation graphique des variations dans le temps des paramètres mesurés et une sélection d'évènements de référence sur ces courbes.Control method according to claim 1, characterized in that a graphical representation of the variations over time of the measured parameters is provided and a selection of reference events on these curves. Procédé de contrôle selon la revendication 1, caractérisé en ce que l'on prévoit une mise en mémoire des informations mesurées pour suivre l'évolution dans le temps des paramètres selon une séquence déterminée.Control method according to claim 1, characterized in that provision is made for storing the measured information in order to follow the evolution over time of the parameters according to a determined sequence. Dispositif pour la mise en oeuvre du procédé de contrôle d'une machine mobile selon la revendication 1, comprenant un bâti (4, 5, 8, 9) apte à être déplacé selon un mouvement de translation le long de files (2, 3) de chemin de roulement, sur lequel sont agencés des moyens de levage (13), caractérisé en ce qu'il comporte : - des moyens pour mesurer des paramètres caractéristiques de la machine mobile donnant l'image des efforts, des déformations et de l'énergie consommée à un instant donné, - des moyens pour établir une corrélation et pour comparer le résultat des mesures en phase active avec cette corrélation pour relever les dérives objectives des paramètres dans le temps. Device for implementing the method control of a mobile machine according to claim 1, comprising a frame (4, 5, 8, 9) capable of being moved in a translational movement along the tracks (2, 3) of the raceway, on which are fitted with lifting means (13), characterized in that it comprises: means for measuring characteristic parameters of the mobile machine giving the image of the forces, deformations and energy consumed at a given instant, means for establishing a correlation and for comparing the result of the measurements in active phase with this correlation in order to note the objective drifts of the parameters over time. Dispositif selon la revendication 6, caractérisé en ce que les moyens de traitement (18) sont constitués par au moins une mémoire, associée à des moyens calculateurs connectés à des moyens de visualisation et de gestion des informations.Device according to claim 6, characterized in that the processing means (18) consist of at least one memory, associated with computer means connected to means for viewing and managing information. Dispositif selon la revendication 6, caractérisé en ce qu'il comporte des jauges (15) extensométriques pour détecter les variations des contraintes.Device according to claim 6, characterized in that it includes strain gauges (15) for detecting variations in stresses. Dispositif selon la revendication 6, caractérisé en ce qu'il comporte des cellules (16) photosensibles associées à un laser pour déterminer les déformations.Device according to claim 6, characterized in that it comprises photosensitive cells (16) associated with a laser to determine the deformations. Dispositif selon la revendication 6, caractérisé en ce qu'il comporte des pinces (17) ampèremétriques pour déterminer les variations d'intensité des moteurs (7).Device according to claim 6, characterized in that it comprises amperometric clamps (17) for determining the variations in intensity of the motors (7).
EP19940490037 1993-08-06 1994-08-02 Method and device for controlling a mobile machine Expired - Lifetime EP0638876B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9309875A FR2708770B1 (en) 1993-08-06 1993-08-06 Method of controlling a mobile machine and device for its implementation.
FR9309875 1993-08-06

Publications (2)

Publication Number Publication Date
EP0638876A1 true EP0638876A1 (en) 1995-02-15
EP0638876B1 EP0638876B1 (en) 1998-11-11

Family

ID=9450126

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19940490037 Expired - Lifetime EP0638876B1 (en) 1993-08-06 1994-08-02 Method and device for controlling a mobile machine

Country Status (3)

Country Link
EP (1) EP0638876B1 (en)
DE (1) DE69414489T2 (en)
FR (1) FR2708770B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2123589A1 (en) * 2008-05-19 2009-11-25 Manitowoc Crane Group France SAS Determination and reconstruction of load changes in lifting devices

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2020432A (en) * 1978-05-06 1979-11-14 Arcubos Ltd Improvements in or relating to strain detecting devices
GB2090416A (en) * 1980-12-24 1982-07-07 Mannesmann Ag Apparatus for indicating the wear of a lifting device such as a hoist
EP0080679A2 (en) * 1981-11-30 1983-06-08 Westinghouse Electric Corporation Apparatus for removing and/or positioning fuel assemblies of a nuclear reactor
US4636962A (en) * 1983-05-24 1987-01-13 Columbus Mckinnon Corporation Microprocessor-controlled hoist system
FR2663473A1 (en) * 1990-06-19 1991-12-20 Systemes Productiques Ingenier Load limiting method and device for a mechanical appliance or the like, using at least one electrical-type motor member
US5133465A (en) * 1990-01-29 1992-07-28 Whiting Corporation Bridge crane electric motor control system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2020432A (en) * 1978-05-06 1979-11-14 Arcubos Ltd Improvements in or relating to strain detecting devices
GB2090416A (en) * 1980-12-24 1982-07-07 Mannesmann Ag Apparatus for indicating the wear of a lifting device such as a hoist
EP0080679A2 (en) * 1981-11-30 1983-06-08 Westinghouse Electric Corporation Apparatus for removing and/or positioning fuel assemblies of a nuclear reactor
US4636962A (en) * 1983-05-24 1987-01-13 Columbus Mckinnon Corporation Microprocessor-controlled hoist system
US5133465A (en) * 1990-01-29 1992-07-28 Whiting Corporation Bridge crane electric motor control system
FR2663473A1 (en) * 1990-06-19 1991-12-20 Systemes Productiques Ingenier Load limiting method and device for a mechanical appliance or the like, using at least one electrical-type motor member

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
FUJIYOSHI: "Monitoring of load cycle of overhead traveling cranes", ADVANCES IN INSTRUMENTATION, vol. 26, no. 2, 4 October 1971 (1971-10-04), RESEARCH TRIANGLE PARK US, pages 648-1 - 648-8 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2123589A1 (en) * 2008-05-19 2009-11-25 Manitowoc Crane Group France SAS Determination and reconstruction of load changes in lifting devices
US8200401B2 (en) 2008-05-19 2012-06-12 Manitowoc Crane Group France Sas Determining and reconstructing changes in load on lifting gear
CN101585485B (en) * 2008-05-19 2013-05-29 马尼托沃克起重机集团（法国）公司 Determination and reconstruction of load changes in lifting devices

Also Published As

Publication number Publication date
DE69414489T2 (en) 1999-06-10
EP0638876B1 (en) 1998-11-11
DE69414489D1 (en) 1998-12-17
FR2708770B1 (en) 1995-10-13
FR2708770A1 (en) 1995-02-10

Similar Documents

Publication Publication Date Title
EP0066494B1 (en) System for the visual analysis of vibratory movements in a rotating machine
EP0320326B1 (en) Process and means for contactless controlling the geometric outlines
EP2391776B1 (en) System and method for monitoring the state of a foundation in a soil
EP0657723A1 (en) Method and apparatus for detecting a load dimensioning overrun of an aircraft
WO2007135051A1 (en) Device for non-destructive testing of a component by analyzing distribution of a leakage magnetic field
EP0649001B1 (en) Procedure to measure the form and/or evenness of a moving material and device for its execution
SE1950077A1 (en) System and method for collecting operational vibration data for mining machine
FR2750160A1 (en) METHOD AND SYSTEM FOR REAL-TIME ESTIMATION OF AT LEAST ONE PARAMETER RELATED TO THE DISPLACEMENT OF A DRILLING TOOL
EP0638876B1 (en) Method and device for controlling a mobile machine
WO2013139709A1 (en) Method and device for the nondestructive testing of the material integrity of a composite part, in particular in the hollows thereof
EP0622610A1 (en) Calibration method and apparatus for flat product transversal profile thickness measuring unit
FR2610110A1 (en) STRUCTURAL DEFECT DETECTION DEVICE
WO2007135059A1 (en) Device for non-destructive testing of a component by analyzing radiation dissipation
CA2670058A1 (en) Method for simulating the braking of a cable transport system, method for diagnosing the braking of said system and control device for said system
EP0373069A1 (en) Checking process for a completed printed-circuit board, in particular for checking the components of the circuit board, and apparatus to carry out this process
EP0930493B1 (en) Test bench for the suspension of two-wheeled vehicles
WO2003019130A1 (en) Machine and method for controlling a casing
FR3028030A1 (en) DEVICE AND METHOD FOR INSPECTING TIRES OF A FLEET OF VEHICLES, IN PARTICULAR CIVIL ENGINEERING
FR3086571A1 (en) ROBOT ARM SYSTEM, AND METHOD FOR TRANSMITTING AN INFORMATION SIGNAL IN THE EVENT OF DETECTION OF A CRITICAL STATE IN SAID ROBOT ARM SYSTEM
EP3691954B1 (en) Device for measuring the movement of a rail during the passage of a train
EP0010498B1 (en) Process and device to estimate the deformation of a roadway under the action of a load
FR2751079A1 (en) Motorbike suspension testing bench
FR2705954A1 (en) Lifting assembly and device for managing the operation of an association of unitary lifting elements, especially for vehicles
EP4145093A1 (en) Device for adjusting an optical encoder with photodetectors and adjustment method
FR2734630A1 (en) Device for checking geometry of flat annular surface

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): BE DE GB IT LU NL

17P Request for examination filed

Effective date: 19950425

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: AINF SA

17Q First examination report despatched

Effective date: 19960826

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE DE GB IT LU NL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19981111

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

Effective date: 19981111

REF Corresponds to:

Ref document number: 69414489

Country of ref document: DE

Date of ref document: 19981217

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19981214

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990802

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20030820

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20030822

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20031010

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040802

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040831

BERE Be: lapsed

Owner name: S.A. *AINF

Effective date: 20040831

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050301

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20040802

BERE Be: lapsed

Owner name: S.A. *AINF

Effective date: 20040831