EP0638876B1 - Verfahren und Vorrichtung zur Kontrolle einer beweglichen Maschine - Google Patents

Verfahren und Vorrichtung zur Kontrolle einer beweglichen Maschine Download PDF

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Publication number
EP0638876B1
EP0638876B1 EP19940490037 EP94490037A EP0638876B1 EP 0638876 B1 EP0638876 B1 EP 0638876B1 EP 19940490037 EP19940490037 EP 19940490037 EP 94490037 A EP94490037 A EP 94490037A EP 0638876 B1 EP0638876 B1 EP 0638876B1
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EP
European Patent Office
Prior art keywords
girders
parameters
travelling crane
overhead travelling
measurements
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.)
Expired - Lifetime
Application number
EP19940490037
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English (en)
French (fr)
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EP0638876A1 (de
Inventor
Roger Boinet
Philippe Popieul
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AINF SA
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AINF SA
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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 object of the present invention is to remedy these disadvantages in 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 avoid the risks of malfunction.
  • An advantage of the device for implementing the method control according to the invention lies in the fact that it is constituted by major part of removable means which allows its use on many user sites.
  • the subject of the present invention is a method for controlling a mobile machine, such as in particular a 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 use such mobile machinery to lift and move 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 F 1 , a frame 20 consisting of two box springs 4 and 5 connected by beams 8 and 9.
  • a motor 7 is arranged on each of them and it has suitable power characteristics in according to needs so as to ensure an operation desired overhead crane.
  • 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 arrow F 3 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 arrow F 3 parallel to the axis Oz.
  • this device includes gauges strain gauges 15, of a conventional and known type, for determine the variations in the stresses level of the box springs 4 and 5.
  • the device according to the invention comprises also means to process 18 these measures constituted by a recorder, such as for example that marketed under the name "Windograf", associated with data processing means comprising at least a memory associated with computer means connected to means for viewing and managing information 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 a memory associated with computer means connected to means for viewing and managing information such as for example a keyboard and a console.
  • this method of control consists in determining the proper characteristics of the bridge by measuring parameters, such as in particular the stresses in a bed base, horizontal deformations and vertical of the angle between the bases 4, 5 and the beams 8, 9 as well as the intensity of each motor 7 for the training of the box springs 4 and 5. From these information, we sort of determine a "signature" of the bridge allowing to know these characteristics before putting it into operation or, after a number of hours of use.
  • the same measurement is made at least the same parameters, on the bridge when it is in the active phase, and we establish a correlation and a comparison of the result of these measurements with the values with the specific characteristics of the bridge to determine his condition.
  • representation is planned graph of the variations over time of these different parameters, such as this is more particularly illustrated in Figures 3 to 5 and, a selection of events of reference on these curves which constitutes in some so, breaking points that the device should not achieve.
  • Figure 2 illustrates the variations in the current consumption gap of motors 7 in each row 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, ⁇ x, ⁇ z ⁇ tx and ⁇ tz and correlates these events.
  • the processing means of the invention allow determine a diagnosis on the evolution of events likely to occur over time, in particular by a correlation of these measures.
  • FIG. 5 there is shown in FIG. 5 the variation ⁇ I of the difference in current consumption of motors 7 between lines 2 and 3.
  • the means of treatment in accordance with the invention also make it possible to obtain an estimate parameters, especially when the variations ⁇ z and ⁇ y corresponding to the variations in the constraints are determined, since this makes it possible to appreciate the solidity box springs 4 and 5 and their fatigue strength at look at the frequency of variation of these constraints.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control And Safety Of Cranes (AREA)

Claims (9)

  1. Verfahren zum Kontrollieren eines Laufkrans (1), der ein Gestell umfaßt, das aus zwei über wenigstens einen Balken (8, 9) mit einander verbundenen Stürzen (4, 5) besteht, wobei der genannte Laufkran (1) geeignet ist, gemäß einer Translationsbewegung entlang Rollbahnsträngen (2, 3) bewegt zu werden, auf dem Hebemittel (13) angeordnet sind, dadurch gekennzeichnet, daß
    typische Parameter des genannten Rollkrans (1), die das Bild der Kräfte, der Verformungen und des Energieverbrauchs zu einem gegebenen Zeitpunkt geben, aufgezeichnet werden, indem wenigstens die Beanspruchungen in den Stürzen (4, 5), die Verformungen auf einer waagerechten und senkrechten Ebene des Winkels zwischen dem Balken (8 und 9) und den Stürzen (4, 5) und die Stromstärke der Antriebsmotoren (7) für die Stürze (4, 5) gemessen werden,
    wenigstens diegleichen Parameter in der aktiven Phase, wenn der Laufkran (1) bestimmte Lasten trägt, gemessen werden,
    eine Korrelation zwischen diesen Meßwerten festgelegt wird,
    mit dieser Korrelation das Ergebnis der Meßungen in der aktiven Phase verglichen wird, um die zeitlichen, objektiven Abweichungen der Parameter aufzuzeichnen.
  2. Kontrollverfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Meßungen in der aktiven Phase während der Beschleunigungen und der Verlangsamungen des Laufkrans (1) durchgeführt werden.
  3. Kontrollverfahren nach Anspruch 1, dadurch gekennzeichnet, daß eine graphische Darstellung der zeitlichen Änderungen der gemessenen Parameter und eine Wahl von Bezugsereignissen in diesen Kurven vorgesehen sind.
  4. Kontrollverfahren nach Anspruch 1, dadurch gekennzeichnet, daß eine Speicherung der gemessenen Daten vorgesehen ist, um die zeitliche Änderung der Parameter gemäß einer bestimmten Sequenz zu beobachten.
  5. Vorrichtung zur Anwendung des Verfahrens zur Kontrolle eines Laufkrans (1), der ein Gestell umfaßt, das aus zwei über wenigstens einen Balken (8, 9) mit einander verbundenen Stürzen (4, 5) besteht, wobei der genannte Laufkran (1) geeignet ist, gemäß einer Translationsbewegung entlang Rollbahnsträngen (2, 3) bewegt zu werden, auf dem Hebemittel (13) angeordnet sind, dadurch gekennzeichnet, daß sie umfaßt:
    Mittel zum Aufzeichnen der typischen Parameter der beweglichen Maschine, die das Bild der Kräfte, der Verformungen und des Energieverbrauchs zu einem gegebenen Zeitpunkt geben, die wenigstens die Beanspruchungen in den Stürzen (4, 5), die Verformungen auf einer waagerechten und senkrechten Ebene des Winkels zwischen dem Balken (8 und 9) und den Stürzen (4, 5) und die Stromstärke der Antriebsmotoren (7) der Stürze (4, 5) messen,
    Verarbeitungsmittel (18), um eine Korrelation zwischen diesen Meßwerten festzulegen und mit dieser Korrelation das Ergebnis der Meßungen in der aktiven Phase zu vergleichen, sodaß die zeitlichen, objektiven Abweichungen der Parameter aufgezeichnet werden.
  6. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß die Verarbeitungsmittel (18) aus wenigstens einem Speicher bestehen, der Rechnermitteln zugeordnet ist, die mit Datenanzeige- und Verwaltungsmitteln verbunden sind.
  7. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß sie Dehnungsmeßstreifen (15) umfaßt, um die Änderungen der Beanspruchungen festzustellen.
  8. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß sie einem Laser zugeordnete Photozellen (16) umfaßt, um die Verformungen zu bestimmen.
  9. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß sie Stromanlegezangen 17 umfaßt, um die Stromstärkeänderungen der Motoren (7) zu bestimmen.
EP19940490037 1993-08-06 1994-08-02 Verfahren und Vorrichtung zur Kontrolle einer beweglichen Maschine Expired - Lifetime EP0638876B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9309875 1993-08-06
FR9309875A FR2708770B1 (fr) 1993-08-06 1993-08-06 Procédé de contrôle d'une machine mobile et dispositif pour sa mise en Óoeuvre.

Publications (2)

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

Family

ID=9450126

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19940490037 Expired - Lifetime EP0638876B1 (de) 1993-08-06 1994-08-02 Verfahren und Vorrichtung zur Kontrolle einer beweglichen Maschine

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EP (1) EP0638876B1 (de)
DE (1) DE69414489T2 (de)
FR (1) FR2708770B1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008024215B4 (de) 2008-05-19 2015-08-20 Manitowoc Crane Group France Sas Bestimmung und Rekonstruktion von Laständerungen an Hebezeugen

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2020432B (en) * 1978-05-06 1982-07-28 Arcubos Ltd Strain detecting devices
DE3048964A1 (de) * 1980-12-24 1982-07-08 Mannesmann AG, 4000 Düsseldorf Verfahren und vorrichtung zum ermitteln der belastung von hebezeugen
US4487741A (en) * 1981-11-30 1984-12-11 Westinghouse Electric Corp. Transfer of fuel assemblies
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 (fr) * 1990-06-19 1991-12-20 Systemes Productiques Ingenier Dispositif et procede de limitation de charge pour appareil mecanique ou similaire, utilisant au moins un organe moteur de type electrique.

Also Published As

Publication number Publication date
DE69414489T2 (de) 1999-06-10
FR2708770B1 (fr) 1995-10-13
EP0638876A1 (de) 1995-02-15
FR2708770A1 (fr) 1995-02-10
DE69414489D1 (de) 1998-12-17

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