EP0737851B1 - Méthode et dispositif pour déterminer des charges des équipements d'élévation et de tension - Google Patents

Méthode et dispositif pour déterminer des charges des équipements d'élévation et de tension Download PDF

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Publication number
EP0737851B1
EP0737851B1 EP96250084A EP96250084A EP0737851B1 EP 0737851 B1 EP0737851 B1 EP 0737851B1 EP 96250084 A EP96250084 A EP 96250084A EP 96250084 A EP96250084 A EP 96250084A EP 0737851 B1 EP0737851 B1 EP 0737851B1
Authority
EP
European Patent Office
Prior art keywords
load
time periods
load ranges
lifting
time
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
EP96250084A
Other languages
German (de)
English (en)
Other versions
EP0737851A3 (fr
EP0737851A2 (fr
Inventor
Hans-G. Kupferschmidt
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.)
Bruger and Fischer Krananlagen und Hebezeuge GmbH
Original Assignee
Bruger and Fischer Krananlagen und Hebezeuge GmbH
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 Bruger and Fischer Krananlagen und Hebezeuge GmbH filed Critical Bruger and Fischer Krananlagen und Hebezeuge GmbH
Publication of EP0737851A2 publication Critical patent/EP0737851A2/fr
Publication of EP0737851A3 publication Critical patent/EP0737851A3/fr
Application granted granted Critical
Publication of EP0737851B1 publication Critical patent/EP0737851B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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

Definitions

  • the invention relates to a method and a device for detecting loads from lifting and Towing equipment.
  • Crane systems, hoists, pulling devices, winches or the like Devices have a predetermined lifespan, which is dependent on the load. Around To determine loads, it is known to have a hoist diary to carry out all the lifting movements are documented. For this a person has to be parked become. With such a registration of the burden it is provided by law that according to a a general overhaul for a specified number of years the system must be carried out regardless of whether the specified lifespan or useful life expired or not because the documentation is not is evidence of the real stress.
  • EP 0 749 934 A2 describes one method and one Device for determining the dynamic loads known on components, systems and machines, where a maximum and a minimum Torque value using a combination of speed determination with perforated disc on a rotating one Part and a strain gauge load change data determined become. One turn corresponds to Drive shaft a load change.
  • the saved Data are processed digitally and according to a theoretical Basic ideas of the fatigue strength theory weighted in an assumed load spectrum.
  • the Load change data becomes their contribution to wear in voltage collectives or load collectives revalued and spent in remaining life.
  • US 4 116 050 relates to a load meter for presses, who is mainly supposed to solve the task that Setting or calibration of a variety of Simplify load sensors, taking the maximum Load values of the individual load sensors and the maximum Value of the entire load sensors measured and displayed precisely should be.
  • the multitude of different ones Attached voltmeters give their Individual signals from and on different channels in a further channel the individual signals total adding signal output.
  • In one Storage will be digital signal for the unloaded State saved and in a second memory become the maximum values delivered for each channel a pressing process saved. After finishing one Press cycle is the content of the first memory from Content of the second memory subtracts from the true one Determine maximum value. In case of overload during a warning signal is emitted during a cycle.
  • the invention is therefore based on the object Method and device for detecting the loads of lifting and pulling devices, an automatic registration of debits allowed and an exploitation of the entire given Allows lifespan and thus to reduce the Contributes to costs.
  • the single figure shows a block diagram of the invention Contraption.
  • the device shown in the figure which as “Load collective storage” can be used for measuring and storing load conditions, for example a crane system.
  • the shown Device attached to the crane system and connected to at least one force sensor 1.
  • the Force sensor is for example as a strain gauge sensor (DMS sensor) trained, however all other sensors used for force measurement can be used.
  • the strain gauge sensors are e.g. as load measuring bolts in the suspensions of the crane ropes appropriate. They give an electrical output signal, that the crane hook load is proportional.
  • the sensors are in bridge circuit are arranged and assigned differential amplifiers have, connected to an A / D converter 2, of the supplied analog signals into digital signals converts and delivers them to a bus 3.
  • the bus line 3 is with a microprocessor 4, one Clock 5, an EEPROM 6 as long-term memory, one RAM 7 as a buffer and a display unit 8 connected for the data of interest.
  • an interface 9 is connected to the microprocessor 4, the directly with a monitoring unit 12 is connected to alarm device 10.
  • an interface 13 is provided via which a Personal computer 11 can be connected to evaluate the data is.
  • a basic measurement is used to adjust the system carried out on the load hook of the crane system no load is located. The one with this basic measurement recorded measured value is accepted as zero value, which is taken into account in all further measurements. Then a maximum load is generated on the load hook, the measured value being a hundred percent load in the microprocessor 4 or stored in RAM 7.
  • the maximum load range is according to the regulations from 0 to 100% in a variety of load ranges divided, namely into load ranges from 0 to 10, 11 to 20, 21 to 40, 41 to 60, 61 to 80, 81 to 100 and greater than 100, the percentages given are.
  • the detected by the sensors 1 and by the A / D converter 2 converted into digital signals Measured values are taken into account in each case Zero value and the maximum value from the microprocessor 4 converted into percentages and accordingly this percentage in one of the load ranges classified.
  • the reliable operation of the device according to the invention can be displayed by a monitoring unit 12 that are separate from the other components Has power supply and through a data line connected to the rest of the interface 9 is. Should the device shown in Fig. 1 fail, the monitoring unit 12 a siren alarm triggered via the alarm device 10.
  • the microprocessor 4 generates regularly for monitoring Clock signals via the interface 9 the monitoring unit 12 are supplied. Stay the clock signals from what, for example, when interrupted the power supply of the microprocessor 4 or occur in the event of another failure can, the monitoring unit detects the absence and controls the alarm device 10.
  • the current measured values from each individual sensor 1 are displayed by the display unit 8 at the same time also the calendar week, the time with Show hours, minutes and seconds and the date can.
  • the microprocessor 4 determines whether the measured value over 100%, i.e. above the maximum load is a signal via the interface 9 output the transmission unit 12, which the Alarm device 10 activated.
  • the Overloads with date and time in the EEPROM 6 saved. The overload condition is only then as ended registered when the load hanging on the hook is less than 50%.
  • a suitable one can also be provided via the interface 13
  • Computer 11 can be connected, which in the EEPROM 6 read data and a log about the loads in the form of times for the different load ranges and the different Can print calendar weeks. Can continue uses the data to calculate crane life be, the mathematical method for the Calculation is specified by regulations and over the computer program can be determined.
  • the storage medium in the form of the EEPROM 6 can also be removed from the device and as a document serve or used in a separate reading device be so that a computer 11 is not directly be connected to the device of FIG. 1 got to.
  • any other non-volatile one Memory can be used.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control And Safety Of Cranes (AREA)
  • Jib Cranes (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Electric Cable Installation (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)

Claims (15)

  1. Procédé d'enregistrement des charges de dispositifs de levage et de traction, dans lequel les forces respectives s'exerçant sur les dispositifs de levage et de traction, de même que leur durée, sont mesurées en tant qu'intervalles de temps, les forces mesurées sont affectées à des gammes de charges prédéfinies et, au sein de périodes définies, les différents intervalles de temps sont additionnés et mémorisés dans les gammes de charge prédéfinies, les intervalles de temps ajoutés dans les différentes périodes définies, de même que les gammes de charge auxquelles ils sont affectés, étant utilisés pour déterminer l'évolution de la durée de vie.
  2. Procédé selon la revendication 1, caractérisé en ce que la force respective mesurée est exprimée en pourcentage d'une charge maximale, et en ce que les gammes de charge sont déterminées en tant que gammes de pourcentage.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce qu'est imprimé un procès-verbal qui indique, pour les périodes définies, la durée totale, donnée par l'addition des intervalles de temps, de la charge dans les différentes gammes de charge.
  4. Procédé selon l'une des revendications 1 à 3, caractérisé en ce qu'une alarme se déclenche en cas de surcharge.
  5. Procédé selon la revendication 4, caractérisé en ce que les états de surcharge sont mémorisés avec la date et l'heure.
  6. Procédé selon l'une des revendications 1 à 5, caractérisé en ce que les intervalles de temps ajoutés sont mémorisés dans les différentes gammes de charge toutes les semaines.
  7. Dispositif d'enregistrement de charges de dispositifs de levage et de traction comportant un dispositif de capteur (1) permettant de mesurer des forces s'exerçant sur le dispositif de levage ou de traction, un dispositif de mesure du temps (4, 5), qui détermine la durée des forces respectives appliquées en tant qu'intervalle de temps, un dispositif (4) permettant de classer les différentes valeurs de mesure dans des gammes de charge prédéfinies, un dispositif (4) permettant d'ajouter les différents intervalles de temps, qui sont affectés aux différentes gammes de charge et un dispositif de mémorisation (6, 7) permettant de stocker les intervalles de temps ajoutés dans les différentes gammes de charge.
  8. Dispositif selon la revendication 7, caractérisé en ce que le dispositif de capteur (1) est conçu en tant qu'au moins une jauge de contrainte ou en tant que piézoélément.
  9. Dispositif selon l'une des revendications 7 ou 8, caractérisé en ce que le dispositif de capteur (1) est conçu en tant qu'au moins un boulon de mesure de charge qui est raccordé contre ou dans des éléments captant la charge des dispositifs de levage et de traction.
  10. Dispositif selon l'une des revendications 7 à 9, caractérisé en ce que le dispositif de mesure du temps (5) est conçu en tant qu'horloge avec indication de date.
  11. Dispositif selon l'une des revendications 7 à 10, caractérisé en ce qu'est prévu un dispositif d'affichage (8) permettant d'afficher le pourcentage instantané de la charge supportée par le dispositif de levage ou de traction, sur la base de la charge maximale de l'heure et/ou de la date.
  12. Dispositif selon l'une des revendications 7 à 11, caractérisé en ce que le dispositif de mémorisation présente une EEPROM (6).
  13. Dispositif selon l'une des revendications 7 à 12, caractérisé en ce qu'est prévue une unité de surveillance (12) équipée d'un dispositif d'alarme (10), qui déclenche un signal d'alarme en cas de survenue d'une surcharge.
  14. Dispositif selon l'une des revendications 7 à 13, caractérisé en ce que le dispositif de surveillance (12) présente une alimentation en tension séparée des autres éléments et surveille une éventuelle panne des autres éléments.
  15. Dispositif selon l'une des revendications 7 à 13, caractérisé en ce qu'une interface (9) pour un ordinateur (11) est prévue.
EP96250084A 1995-04-13 1996-04-15 Méthode et dispositif pour déterminer des charges des équipements d'élévation et de tension Expired - Lifetime EP0737851B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19514050A DE19514050C2 (de) 1995-04-13 1995-04-13 Verfahren und Vorrichtung zum Erfassen von Belastungen von Hub- und Zugeinrichtungen
DE19514050 1995-04-13

Publications (3)

Publication Number Publication Date
EP0737851A2 EP0737851A2 (fr) 1996-10-16
EP0737851A3 EP0737851A3 (fr) 1997-04-09
EP0737851B1 true EP0737851B1 (fr) 2001-11-21

Family

ID=7759665

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96250084A Expired - Lifetime EP0737851B1 (fr) 1995-04-13 1996-04-15 Méthode et dispositif pour déterminer des charges des équipements d'élévation et de tension

Country Status (4)

Country Link
EP (1) EP0737851B1 (fr)
AT (1) ATE209340T1 (fr)
DE (2) DE19514050C2 (fr)
DK (1) DK0737851T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7497137B2 (en) 2005-11-15 2009-03-03 Mettler-Toledo Ag Method of monitoring and/or determining the condition of a force-measuring device, and force-measuring device

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19806816B4 (de) * 1998-02-18 2005-04-14 Rohr Gmbh Motor-Unterwassergreifer mit Überwachungseinrichtung
DE19956265B4 (de) * 1999-11-23 2005-06-30 Liebherr-Werk Ehingen Gmbh Vorrichtung zur Überwachung des Betriebs von Hubwinden
SE0001608L (sv) * 2000-04-28 2001-06-11 Hiab Ab Hydraulisk kran med organ för registrering av lyftning och nedsättning av last, förfarande för sådan registrering samt förfarande för beräkning av utmattningsbelastningen hos sådan kran
DE10025603A1 (de) * 2000-05-24 2001-11-29 Pat Gmbh Überwachungs- und Steuereinrichtung für Bau- oder Industriefahrzeuge
ITMI20020891A1 (it) * 2002-04-24 2003-10-24 Cifa Spa Sistema per il controllo e la sorveglianza del funzionamento di macchinari semoventi a braccio articolato quali pompe per calcestruzzo e met
DE102004007504B4 (de) * 2004-02-13 2009-11-05 Demag Cranes & Components Gmbh Hebezeug, insbesondere Kettenzug oder Seilzug
DE102008024215B4 (de) 2008-05-19 2015-08-20 Manitowoc Crane Group France Sas Bestimmung und Rekonstruktion von Laständerungen an Hebezeugen
WO2014169029A1 (fr) * 2013-04-09 2014-10-16 Anvil Attachments Surveillance d'un mécanisme de saisie
RU182820U1 (ru) * 2017-11-30 2018-09-04 Дмитрий Александрович Овруцкий Устройство для определения оптимального периода технического обслуживания и ремонта изделия

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0749934A2 (fr) * 1995-03-02 1996-12-27 Brandmaier Messen, Steuern, Software Procédé et appareil pour la détermination des contraintes dynamiques dans les pièces, équipements et machines

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JPS5342875A (en) * 1976-09-30 1978-04-18 Komatsu Mfg Co Ltd Apparatus for measuring pressure
FR2443419A1 (fr) * 1978-12-04 1980-07-04 Ferodo Sa Dispositif dynamometrique pour engin a fleche, en particulier pour controle de basculement de celui-ci
DE3121461A1 (de) * 1981-05-29 1982-12-16 Westinghouse Electric Corp., 15222 Pittsburgh, Pa. Verfahren zur ueberwachung der lebensdauer von zumindest einem in einer werkzeugmaschine benutzten werkzeugs und vorrichtung zur durchfuehrung des verfahrens
US4677855A (en) * 1985-12-19 1987-07-07 Electric Power Research Institute, Inc. Method for measuring damage to structural components
US4947341A (en) * 1988-03-15 1990-08-07 Digital Equipment Corporation Method of predicting fatigue lifetimes of metallic structures
JPH0447260A (ja) * 1990-06-14 1992-02-17 Hitachi Ltd 応力腐食割れ寿命及びき裂進展速度予測方法
JP3185066B2 (ja) * 1991-08-12 2001-07-09 黒田精工株式会社 ボールねじの寿命監視装置
DE4226010A1 (de) * 1992-08-06 1994-02-10 Porsche Ag Verfahren und Vorrichtung zum Überwachen der Lebensdauer von Fahrzeugbauteilen

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0749934A2 (fr) * 1995-03-02 1996-12-27 Brandmaier Messen, Steuern, Software Procédé et appareil pour la détermination des contraintes dynamiques dans les pièces, équipements et machines

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7497137B2 (en) 2005-11-15 2009-03-03 Mettler-Toledo Ag Method of monitoring and/or determining the condition of a force-measuring device, and force-measuring device

Also Published As

Publication number Publication date
DE19514050C2 (de) 1999-06-02
DK0737851T3 (da) 2002-05-13
DE19514050A1 (de) 1996-10-24
EP0737851A3 (fr) 1997-04-09
DE59608232D1 (de) 2002-01-03
EP0737851A2 (fr) 1996-10-16
ATE209340T1 (de) 2001-12-15

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