EP0737851A2 - Method and device for determining charges of lifting and tension equipments - Google Patents

Method and device for determining charges of lifting and tension equipments Download PDF

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Publication number
EP0737851A2
EP0737851A2 EP96250084A EP96250084A EP0737851A2 EP 0737851 A2 EP0737851 A2 EP 0737851A2 EP 96250084 A EP96250084 A EP 96250084A EP 96250084 A EP96250084 A EP 96250084A EP 0737851 A2 EP0737851 A2 EP 0737851A2
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EP
European Patent Office
Prior art keywords
load
time
load ranges
lifting
time periods
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
EP96250084A
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German (de)
French (fr)
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EP0737851B1 (en
EP0737851A3 (en
Inventor
Hans-G. Kupferschmidt
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Bruger and Fischer Krananlagen und Hebezeuge GmbH
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Bruger and Fischer Krananlagen und Hebezeuge GmbH
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    • 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 on lifting and pulling devices.
  • Crane systems, hoists, pulling devices, winches or similar devices have a predetermined service life, which depends on the load.
  • it is known to keep a hoist diary in which all lifting movements are documented. For this, a person must be parked. With such a registration of the load, it is provided by law that after a certain number of years a general overhaul of the system must be carried out, regardless of whether the specified service life or useful life has expired or not, since the documentation is not evidence of the real loads applies.
  • the invention is therefore based on the object of providing a method and a device for detecting the loads on lifting and pulling devices which permit automatic registration of the loads and enable utilization of the entire predetermined service life and thus contribute to reducing the costs.
  • the single figure shows a block diagram of the device according to the invention.
  • the device shown in the figure which can be referred to as a “load collective store”, is used for measuring and storing load conditions, for example a crane system.
  • the device shown is attached to the crane system and connected to at least one force sensor 1.
  • the force sensor is designed, for example, as a strain gauge sensor (strain gauge sensor), although all other sensors used for force measurement can be used.
  • the strain gauge sensors are e.g. attached as load measuring bolts in the suspensions of the crane cables. They give an electrical output signal that is proportional to the crane hook load.
  • the sensors which are arranged in a bridge circuit and have associated differential amplifiers, are connected to an A / D converter 2, which converts the supplied analog signals into digital signals and delivers them to a bus 3.
  • the bus line 3 is connected to a microprocessor 4, a clock 5, an EEPROM 6 as a long-term memory, a RAM 7 as a buffer and a display unit 8 for the data of interest.
  • an interface 9 is connected to the microprocessor 4, which is directly connected to a monitoring unit 12 with alarm device 10.
  • An interface 13 is also provided, via which a personal computer 11 can be connected for evaluating the data.
  • An input unit 14 designed as a button, which is connected to the microprocessor, enables the input of necessary control signals and other commands.
  • the maximum load range from 0 to 100% is divided into a plurality of load ranges, namely 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 , where the figures are percentages.
  • the measured values detected by the sensors 1 and converted into digital signals by the A / D converter 2 are converted into percentages by the microprocessor 4, taking into account the zero value and the maximum value, and classified into one of the load ranges according to this percentage.
  • the duration of the respective measured value indicating the load of the crane system is determined via the clock 5 and the respective time is stored and stored in the RAM 7, for example in fractions of a minute under the respective load ranges.
  • the reliable operation of the device according to the invention can be indicated by a monitoring unit 12 which has a power supply which is separate from the other components and is connected to the rest of the interface 9 by a data line. Should the device shown in FIG. 1 fail, the monitoring unit 12 triggers a siren alarm via the alarm device 10.
  • the microprocessor 4 regularly generates clock signals which are supplied to the monitoring unit 12 via the interface 9. If the clock signals fail to appear, which can occur, for example, when the power supply to the microprocessor 4 is interrupted or in the event of another failure, 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, which can simultaneously display the calendar week, the time with hours, minutes and seconds and the date.
  • the microprocessor 4 determines whether the measured value is over 100%, i.e. Above the maximum load, a signal is output to the transmission unit 12 via the interface 9, which activates the alarm device 10.
  • the overloads with date and time are stored in the EEPROM 6. The overload condition is only registered as finished when the load hanging on the hook is below 50%.
  • a suitable computer 11 can also be connected via the interface 13, which can read out the data stored in the EEPROM 6 and can print a log of the loads in the form of times for the different load ranges and the different calendar weeks. Furthermore, the data can be used to calculate the crane service life, the mathematical method for the calculation being predetermined by regulations and can be determined via the computer program.
  • the storage medium in the form of the EEPROM 6 can, however, also be removed from the device and serve as a document or be inserted into a separate reading device, so that a computer 11 does not have to be connected directly to the device according to FIG. 1.
  • any other non-volatile memory can be used.

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  • 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)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Electric Cable Installation (AREA)

Abstract

The method involves measuring the forces acting on the appts. and their duration as time periods. Predetermined load ranges are allocated to the measured forces. Within definite time periods the individual time periods in the predetermined load ranges are summed and stored. The time periods summed in the defined time periods as well as the associated load ranges are used to determine the expiry of the life time of the appts. A sensor arrangement (1) involving piezoelectric or strain-gauge elements measures the forces on the appts., and a timer determines the duration over which the forces act. A device (4) is provided to classify the individual measurement values in the load ranges and to sum the individual time periods. A memory arrangement (6,7) stores the summed time periods in different load ranges.

Description

Die Erfindung betrifft ein Verfahren und eine Vorrichtung zum Erfassen von Belastungen von Hub- und Zugeinrichtungen.The invention relates to a method and a device for detecting loads on lifting and pulling devices.

Krananlagen, Hebezeuge, Zuggeräte, Winden oder dergleichen Vorrichtungen haben eine vorgegebene Lebensdauer, die abhängig von der Belastung ist. Um diese Belastungen festzustellen, ist es bekannt, ein Hebezeug-Tagebuch zu führen, in dem alle Hubbewegungen dokumentiert sind. Dafür muß eine Person abgestellt werden. Bei einer derartigen Registrierung der Belastung ist es vom Gesetz vorgesehen, daß nach einer bestimmten Anzahl von Jahren eine Generalüberholung der Anlage durchgeführt werden muß, unabhängig davon, ob die vorgegebene Lebensdauer bzw. Nutzungsdauer abgelaufen ist oder nicht, da die Dokumentation nicht als Beweis für die wirklichen Belastungen gilt.Crane systems, hoists, pulling devices, winches or similar devices have a predetermined service life, which depends on the load. In order to determine these loads, it is known to keep a hoist diary in which all lifting movements are documented. For this, a person must be parked. With such a registration of the load, it is provided by law that after a certain number of years a general overhaul of the system must be carried out, regardless of whether the specified service life or useful life has expired or not, since the documentation is not evidence of the real loads applies.

Darüber hinaus ist es bekannt, für Hub- und Zugeinrichtungen Betriebsstundenzähler und eine Überlastsicherung vorzusehen, wobei weiterhin in der gleichen Weise, wie oben erwähnt, ein Tagebuch geführt wird. Bei einem solchen Verfahren wird es vom Gesetz vorgegeben, daß nach einer bestimmten Anzahl von Jahren, die die oben angegebene Anzahl etwas übersteigt, eine Generalüberholung durchgeführt werden muß, auch wenn die Nutzungsdauer nicht abgelaufen ist.In addition, it is known to provide operating hours counters and overload protection for lifting and pulling devices, a diary also being kept in the same manner as mentioned above. In such a procedure, the law stipulates that after a certain number of years, which slightly exceeds the number specified above, a general overhaul must be carried out, even if the useful life has not expired.

Durch die vorgeschriebenen Generalüberholungen, unabhängig von der wirklichen Nutzungsdauer, entstehen hohe Kosten, wobei zusätzlich eine Person zum Dokumentieren der Belastungen notwendig ist.The prescribed general overhauls, regardless of the actual useful life, result in high costs, whereby an additional person is required to document the charges.

Der Erfindung liegt daher die Aufgabe zugrunde, ein Verfahren und eine Vorrichtung zum Erfassen der Belastungen von Hub- und Zugeinrichtungen zu schaffen, die eine automatische Registrierung der Belastungen gestattet und eine Ausnutzung der gesamten vorgegebenen Lebensdauer ermöglicht und somit zur Senkung der Kosten beiträgt.The invention is therefore based on the object of providing a method and a device for detecting the loads on lifting and pulling devices which permit automatic registration of the loads and enable utilization of the entire predetermined service life and thus contribute to reducing the costs.

Diese Aufgabe wird erfindungsgemäß durch die Merkmale des auf ein Verfahren gerichteten Hauptanspruches und des nebengeordneten Vorrichtungsanspruches gelöst.This object is achieved according to the invention by the features of the main claim directed to a method and the subordinate device claim.

Dadurch, daß mit dem erfindungsgemäßen Verfahren und der erfindungsgemäßen Vorrichtung alle Belastungen nach ihrer Größe und ihrer Dauer erfaßt werden, wobei in vorgegebenen Lastbereichen die jeweiligen Zeitdauern zu summieren sind, ist es möglich, einen Nachweis über die wirkliche Belastung und ihre Dauer zu erbringen, wobei mit den erfaßten Daten die maximale Nutzungsdauer bestimmt werden kann.Characterized in that with the method and the device according to the invention, all loads are recorded according to their size and duration, with the respective time periods to be summed up in predetermined load ranges, it is possible to provide evidence of the actual load and its duration, whereby the maximum useful life can be determined with the data collected.

Durch die in den Unteransprüchen angegebenen Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen möglich.Advantageous further developments and improvements are possible through the measures specified in the subclaims.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird in der nachfolgenden Beschreibung näher erläutert.An embodiment of the invention is shown in the drawing and is explained in more detail in the following description.

Die einzige Figur zeigt ein Blockschaltbild der erfindungsgemäßen Vorrichtung.The single figure shows a block diagram of the device according to the invention.

Die in der Figur dargestellte Vorrichtung, die als "Lastkollektivspeicher" bezeichnet werden kann, dient zur Messung und Speicherung von Belastungszuständen, beispielsweise einer Krananlage. Dazu wird die dargestellte Vorrichtung an der Krananlage befestigt und mit mindestens einem Kraftsensor 1 verbunden. Der Kraftsensor ist beispielsweise als Dehnungsmeßstreifen-Sensor (DMS-Sensor) ausgebildet, wobei jedoch alle anderen zur Kraftmessung gebräuchlichen Sensoren verwendet werden können. Die DMS-Sensoren werden z.B. als Lastmeßbolzen in den Aufhängungen der Kranseile angebracht. Sie geben ein elektrisches Ausgangssignal, das der Kran-Hakenlast proportional ist.The device shown in the figure, which can be referred to as a “load collective store”, is used for measuring and storing load conditions, for example a crane system. For this purpose, the device shown is attached to the crane system and connected to at least one force sensor 1. The force sensor is designed, for example, as a strain gauge sensor (strain gauge sensor), although all other sensors used for force measurement can be used. The strain gauge sensors are e.g. attached as load measuring bolts in the suspensions of the crane cables. They give an electrical output signal that is proportional to the crane hook load.

Gemäß der Figur sind die Sensoren, die in Brückenschaltung angeordnet sind und zugeordnete Differenzverstärker aufweisen, mit einem A/D-Wandler 2 verbunden, der die gelieferten analogen Signale in Digital-Signale umwandelt und diese an einen Bus 3 liefert. Die Busleitung 3 ist mit einem Mikroprozessor 4, einer Uhr 5, einem EEPROM 6 als Langzeitspeicher, einem RAM 7 als Zwischenspeicher und einer Anzeigeeinheit 8 für die interessierenden Daten verbunden. Außerdem ist an den Mikroprozessor 4 eine Schnittstelle 9 angeschlossen, die direkt mit einer Überwachungseinheit 12 mit Alarmvorrichtung 10 verbunden ist. Weiterhin ist eine Schnittstellen 13 vorgesehen, über die ein Personalcomputer 11 zur Auswertung der Daten anschließbar ist. Eine als Taster ausgebildete Eingabeeinheit 14, die mit dem Mikroprozessor verbunden ist, ermöglicht die Eingabe von notwendigen Steuersignalen und sonstigen Befehlen.According to the figure, the sensors, which are arranged in a bridge circuit and have associated differential amplifiers, are connected to an A / D converter 2, which converts the supplied analog signals into digital signals and delivers them to a bus 3. The bus line 3 is connected to a microprocessor 4, a clock 5, an EEPROM 6 as a long-term memory, a RAM 7 as a buffer and a display unit 8 for the data of interest. In addition, an interface 9 is connected to the microprocessor 4, which is directly connected to a monitoring unit 12 with alarm device 10. An interface 13 is also provided, via which a personal computer 11 can be connected for evaluating the data. An input unit 14 designed as a button, which is connected to the microprocessor, enables the input of necessary control signals and other commands.

Zur Justierung der Anlage wird eine Grundmessung durchgeführt, bei der sich an dem Lasthaken der Krananlage keine Last befindet. Der bei dieser Grundmessung erfaßte Meßwert wird als Null-Wert übernommen, der bei allen weiteren Messungen berücksichtigt wird. Danach wird am Lasthaken eine Maximallast erzeugt, wobei der Meßwert als hundertprozentige Last im Mikroprozessor 4 bzw. im RAM 7 gespeichert wird.To adjust the system, a basic measurement is carried out in which there is no load on the load hook of the crane system. The measured value recorded during this basic measurement is adopted as a zero value, which is taken into account in all further measurements. A maximum load is then generated on the load hook, the measured value being stored as a 100% load in the microprocessor 4 or in the RAM 7.

Entsprechend den Vorschriften ist der maximale Lastbereich von 0 bis 100 % in eine Mehrzahl von Lastbereichen aufgeteilt, nämlich in Lastbereiche von 0 bis 10, 11 bis 20, 21 bis 40, 41 bis 60, 61 bis 80, 81 bis 100 und größer als 100, wobei die Angaben Prozente sind. Die von den Sensoren 1 erfaßten und durch den A/D-Wandler 2 in Digital-Signale umgewandelten Meßwerte werden jeweils unter Berücksichtigung des Null-Wertes und des Maximalwertes von dem Mikroprozessor 4 in Prozenzangaben umgerechnet und entsprechend dieser Prozentangabe in einen der Lastbereiche klassifiziert. Gleichzeitig wird über die Uhr 5 die Dauer des jeweiligen, die Last der Krananlage angebenden Meßwertes bestimmt und die jeweilige Zeit wird im RAM 7 beispielsweise in Bruchteilen von Minuten unter den jeweiligen Lastbereichen abgelegt und gespeichert. Dabei können die den jeweiligen Meßwerten und entsprechenden Lastbereichen zugeordneten Zeitabschnitte separat gespeichert werden, oder die Zeitabschnitte können für die jeweiligen Lastbereiche aufsummiert werden. Wenn die den Meßwerten zugeordneten Zeitabschnitte einzeln gespeichert werden, wird nach einem vorbestimmten Zeitraum eine Summierung vorgenommen. Als Zeiträume, in denen die Zeitabschnitte summiert werden, ist eine Woche vorgesehen, und für jede Kalenderwoche wird von dem Mikroprozessor unter Heranziehung der Daten der Uhr 5 mit Datum und der Daten aus dem RAM 7 ermittelt, wie lange der Kran in jedem der einzelnen oben angegebenen Lastbereiche gearbeitet hat. Diese Werte werden in dem EEPROM 6 unter Zuordnung zu den jeweiligen Lastbereichen und der jeweiligen Kalenderwoche gespeichert.According to the regulations, the maximum load range from 0 to 100% is divided into a plurality of load ranges, namely 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 , where the figures are percentages. The measured values detected by the sensors 1 and converted into digital signals by the A / D converter 2 are converted into percentages by the microprocessor 4, taking into account the zero value and the maximum value, and classified into one of the load ranges according to this percentage. At the same time, the duration of the respective measured value indicating the load of the crane system is determined via the clock 5 and the respective time is stored and stored in the RAM 7, for example in fractions of a minute under the respective load ranges. You can use the respective measured values and time sections assigned to corresponding load areas can be stored separately, or the time sections can be added up for the respective load areas. If the time segments assigned to the measured values are stored individually, a summation is carried out after a predetermined period of time. A week is provided as the periods in which the periods are summed up, and for each calendar week the microprocessor uses the data from the clock 5 with date and the data from the RAM 7 to determine how long the crane in each of the above specified load ranges. These values are stored in the EEPROM 6 under assignment to the respective load ranges and the respective calendar week.

Der zuverlässige Betrieb der erfindungsgemäßen Vorrichtung kann durch eine Überwachungseinheit 12 angezeigt werden, die eine von den übrigen Bauteilen getrennte Stromversorgung aufweist und durch eine Datenleitung mit der übrigen Schnittstelle 9 verbunden ist. Sollte die in Fig. 1 dargestellte Vorrichtung ausfallen, so wird von der Überwachungseinheit 12 über die Alarmvorrichtung 10 ein Sirenenalarm ausgelöst.The reliable operation of the device according to the invention can be indicated by a monitoring unit 12 which has a power supply which is separate from the other components and is connected to the rest of the interface 9 by a data line. Should the device shown in FIG. 1 fail, the monitoring unit 12 triggers a siren alarm via the alarm device 10.

Für die Überwachung erzeugt der Mikroprozessor 4 regelmäßig Taktsignale, die über die Schnittstelle 9 an die Überwachungseinheit 12 geliefert werden. Bleiben die Taktsignale aus, was beispielsweise bei Unterbrechung der Spannungsversorgung des Mikroprozessors 4 oder bei einem sonstigen Ausfall desselben auftreten kann, erkennt die Überwachungseinheit das Ausbleiben und steuert die Alarmvorrichtung 10 an.For monitoring purposes, the microprocessor 4 regularly generates clock signals which are supplied to the monitoring unit 12 via the interface 9. If the clock signals fail to appear, which can occur, for example, when the power supply to the microprocessor 4 is interrupted or in the event of another failure, the monitoring unit detects the absence and controls the alarm device 10.

Die aktuellen Meßwerte von jedem einzelnen Sensor 1 werden von der Anzeigeeinheit 8 angezeigt, die gleichzeitig auch die Kalenderwoche, die Uhrzeit mit Stunden, Minuten und Sekunden und das Datum anzeigen kann.The current measured values from each individual sensor 1 are displayed by the display unit 8, which can simultaneously display the calendar week, the time with hours, minutes and seconds and the date.

Wenn von dem Mikroprozessor 4 festgestellt wird, daß der Meßwert über 100 %, d.h. über der Maximallast liegt, wird über die Schnittstelle 9 ein Signal an die Übertragungseinheit 12 ausgegeben, das die Alarmvorrichtung 10 aktiviert. Zusätzlich werden die Überlastungen mit Datum und Uhrzeit in dem EEPROM 6 gespeichert. Der Überlastzustand wird erst dann als beendet registriert, wenn die am Haken hängende Last unter 50% liegt.If it is determined by the microprocessor 4 that the measured value is over 100%, i.e. Above the maximum load, a signal is output to the transmission unit 12 via the interface 9, which activates the alarm device 10. In addition, the overloads with date and time are stored in the EEPROM 6. The overload condition is only registered as finished when the load hanging on the hook is below 50%.

Über die Schnittstelle 13 kann auch ein passender Computer 11 angeschlossen werden, der die in dem EEPROM 6 gespeicherten Daten auslesen kann und ein Protokoll über die Belastungen in Form von Zeiten für die verschiedenen Lastbereiche und die unterschiedlichen Kalenderwochen drucken kann. Weiterhin können die Daten zur Berechnung der Kran-Lebensdauer verwendet werden, wobei das mathematische Verfahren für die Berechnung durch Vorschriften vorgegeben ist und über das Computerprogramm bestimmt werden kann.A suitable computer 11 can also be connected via the interface 13, which can read out the data stored in the EEPROM 6 and can print a log of the loads in the form of times for the different load ranges and the different calendar weeks. Furthermore, the data can be used to calculate the crane service life, the mathematical method for the calculation being predetermined by regulations and can be determined via the computer program.

Das Speichermedium in Form des EEPROMs 6 kann aber auch aus dem Gerät entnommen werden und als Dokument dienen bzw. in eine getrennte Auslesevorrichtung eingesetzt werden, so daß ein Computer 11 nicht direkt an die Vorrichtung nach Fig. 1 angeschlossen werden muß.The storage medium in the form of the EEPROM 6 can, however, also be removed from the device and serve as a document or be inserted into a separate reading device, so that a computer 11 does not have to be connected directly to the device according to FIG. 1.

Bei der obigen Beschreibung wurde beispielhaft auf eine Krananlage Bezug genommen, selbstverständlich kann die Belastung von jedem anderen Hub- und Zuggerät u.dgl. festgestellt werden.In the above description, reference was made to a crane system as an example, of course, the load from any other lifting and pulling device and the like can. be determined.

Anstelle des EEPROMs 6 kann jeder andere nicht flüchtige Speicher verwendet werden.Instead of the EEPROM 6, any other non-volatile memory can be used.

Claims (15)

Verfahren zum Erfassen der Belastungen von Hub- und Zugeinrichtungen, bei dem die jeweiligen auf die Hub- und Zugeinrichtungen wirkenden Kräfte sowie deren Dauer als Zeitabschnitte gemessen werden, die gemessenen Kräfte vorgegebenen Lastbereichen zugeordnet werden und innerhalb definierter Zeiträume die einzelnen Zeitabschnitte in den vorgegebenen Lastbereichen summiert und gespeichert werden, wobei die in den definierten Zeiträumen summierten Zeitabschnitte sowie die zugeordneten Lastbereiche zur Ermittlung des Ablaufs der Lebensdauer verwendet werden.Method for detecting the loads on lifting and pulling devices, in which the respective forces acting on the lifting and pulling devices and their duration are measured as time segments, the measured forces are assigned to predetermined load ranges and the individual time segments in the specified load ranges are added up within defined time periods and stored, the periods of time summed up in the defined time periods and the assigned load ranges being used to determine the course of the service life. Verfahren nach Anspruch 1,
dadurch gekennzeichnet, daß die jeweils gemessene Kraft in Prozenten einer Maximallast ausgedrückt wird, und daß die Lastbereiche als Prozentbereiche festgelegt werden.Method according to claim 1,
characterized in that the force measured in each case is expressed as a percentage of a maximum load, and in that the load ranges are defined as percentage ranges. Verfahren nach Anspruch 1 oder 2,
dadurch gekennzeichnet, daß ein Protokoll gedruckt wird, das für die definierten Zeiträume die durch die summierten Zeitabschnitte gegebene Gesamtdauer der Belastung in den unterschiedlichen Lastbereichen angibt.The method of claim 1 or 2,
characterized in that a log is printed which, for the defined time periods, indicates the total duration of the load in the different load ranges given by the summed up time periods. Verfahren nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet, daß bei Überlast ein Alarm ausgelöst wird.Method according to one of claims 1 to 3,
characterized in that an alarm is triggered in the event of an overload. Verfahren nach Anspruch 4,
dadurch gekennzeichnet, daß die Überlastzustände mit Datum und Uhrzeit gespeichert werden.Method according to claim 4,
characterized in that the overload conditions are saved with the date and time. Verfahren nach einem der Ansprüche 1 bis 5,+
dadurch gekennzeichnet, daß die summierten Zeitabschnitte in den unterschiedlichen Lastbereichen wochenweise gespeichert werden.Method according to one of claims 1 to 5, +
characterized in that the summed up periods are stored weekly in the different load ranges. Vorrichtung zur Erfassung von Belastungen von Hub- und Zugeinrichtungen mit
einer Sensoranordnung (1) zur Messung von auf die Hub- oder Zugeinrichtung wirkenden Kräfte, einer Zeitmeßeinrichtung (4,5), die die Dauer der jeweils aufgebrachten Kräfte als Zeitabschnitt bestimmt,
einer Einrichtung (4) zum Klassifizieren der einzelnen Meßwerte in vorgegebene Lastbereiche, einer Einrichtung (4) zum Summieren der einzelnen Zeitabschnitte, die den unterschiedlichen Lastbereichen zugeordnet sind, und
einer Speichereinrichtung (6, 7) zum Speichern der in den unterschiedlichen Lastbereichen summierten Zeitabschnitte.Device for detecting loads on lifting and pulling devices with
a sensor arrangement (1) for measuring forces acting on the lifting or pulling device, a time measuring device (4, 5) which determines the duration of the respectively applied forces as a time segment,
a device (4) for classifying the individual measured values into predetermined load ranges, a device (4) for summing the individual time segments which are assigned to the different load ranges, and
a storage device (6, 7) for storing the time segments summed up in the different load ranges. Vorrichtung nach Anspruch 7,
dadurch gekennzeichnet, daß die Sensoranordnung (1) als mindestens ein Dehnungsmeßstreifen oder ein Piezoelement ausgebildet ist.Device according to claim 7,
characterized in that the sensor arrangement (1) is designed as at least one strain gauge or a piezo element. Vorrichtung nach Anspruch 7 oder 8,
dadurch gekennzeichnet, daß die Sensoranordnung (1) als mindestens ein Lastmeßbolzen ausgebildet ist, der an bzw. in den kraftaufnehmenden Teilen der Hub- und Zugeinrichtungen angeordnet ist.Device according to claim 7 or 8,
characterized in that the sensor arrangement (1) is designed as at least one load measuring bolt which is arranged on or in the force-absorbing parts of the lifting and pulling devices. Vorrichtung nach einem der Ansprüche 7 bis 9,
dadurch gekennzeichnet, daß die Zeitmeßeinrichtung (5) als Uhr mit Datumsangabe ausgebildet ist.Device according to one of claims 7 to 9,
characterized in that the time measuring device (5) is designed as a clock with a date. Vorrichtung nach einem der Ansprüche 7 bis 10,
dadurch gekennzeichnet, daß eine Anzeigeeinrichtung (8) zum Anzeigen der augenblicklichen prozentualen, von der Hub- oder Zugeinrichtung aufgenommenen Last, bezogen auf die Maximallast der Uhrzeit und/oder des Datums.Device according to one of claims 7 to 10,
characterized in that a display device (8) for displaying the current percentage load taken up by the lifting or pulling device, based on the maximum load of the time and / or the date. Vorrichtung nach einem der Ansprüche 7 bis 11,
dadurch gekennzeichnet, daß die Speichereinrichtung ein EEPROM (6) aufweist.Device according to one of claims 7 to 11,
characterized in that the memory device has an EEPROM (6). Vorrichtung nach einem der Ansprüche 7 bis 12,
dadurch gekennzeichnet, daß eine Überwachungseinheit (12) mit Alarmeinrichtung (10) vorgesehen ist, die bei Auftreten einer Überlast ein Alarmsignal abgibt.Device according to one of claims 7 to 12,
characterized in that a monitoring unit (12) with an alarm device (10) is provided which emits an alarm signal when an overload occurs. Vorrichtung nach einem der Ansprüche 7 bis 13,
dadurch gekennzeichnet, daß die Überwachungseinheit (12) eine von den übrigen Teilen getrennte Spannungsversorgung aufweist und die übrigen Teile auf Ausfall überwacht.Device according to one of claims 7 to 13,
characterized in that the monitoring unit (12) has a voltage supply separate from the other parts and monitors the other parts for failure. Vorrichtung nach einem der Ansprüche 7 bis 13,
dadurch gekennzeichnet, daß eine Schnittstelle (9) für einen Computer (11) vorgesehen ist.Device according to one of claims 7 to 13,
characterized in that an interface (9) is provided for a computer (11).
EP96250084A 1995-04-13 1996-04-15 Method and device for determining stress on lifting and tension equipments Expired - Lifetime EP0737851B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19514050A DE19514050C2 (en) 1995-04-13 1995-04-13 Method and device for detecting loads on lifting and pulling devices
DE19514050 1995-04-13

Publications (3)

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EP0737851A2 true EP0737851A2 (en) 1996-10-16
EP0737851A3 EP0737851A3 (en) 1997-04-09
EP0737851B1 EP0737851B1 (en) 2001-11-21

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ID=7759665

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96250084A Expired - Lifetime EP0737851B1 (en) 1995-04-13 1996-04-15 Method and device for determining stress on lifting and tension equipments

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EP (1) EP0737851B1 (en)
AT (1) ATE209340T1 (en)
DE (2) DE19514050C2 (en)
DK (1) DK0737851T3 (en)

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EP1103511A2 (en) * 1999-11-23 2001-05-30 Liebherr-Werk Ehingen GmbH Method and device for monitoring a drive of a lifting winch
EP1150019A1 (en) * 2000-04-28 2001-10-31 Hiab AB Counter for registering the quantity of lifts of a crane
EP1356910A1 (en) * 2002-04-24 2003-10-29 Cifa S.p.A. System for controlling and monitoring the operation of self-moving machines with an articulated arm, such as concrete pumps, and maintenance method for said machines
EP1785703A1 (en) * 2005-11-15 2007-05-16 Mettler-Toledo AG Method for monitoring and/or determining the condition of a force measuring device and force measuring device
EP2123589A1 (en) 2008-05-19 2009-11-25 Manitowoc Crane Group France SAS Determination and reconstruction of load changes in lifting devices
RU182820U1 (en) * 2017-11-30 2018-09-04 Дмитрий Александрович Овруцкий Device for determining the optimal period of maintenance and repair of the product

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DE19806816B4 (en) * 1998-02-18 2005-04-14 Rohr Gmbh Motor underwater gripper with monitoring device
DE10025603A1 (en) * 2000-05-24 2001-11-29 Pat Gmbh Monitoring and control device for construction or industrial vehicles has associated data memory in which operating parameters and/or control parameters can be stored
DE102004007504B4 (en) * 2004-02-13 2009-11-05 Demag Cranes & Components Gmbh Hoist, in particular chain hoist or cable pull
US20140300470A1 (en) * 2013-04-09 2014-10-09 Anvil Attachments Monitoring a grabbing mechanism

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1103511A2 (en) * 1999-11-23 2001-05-30 Liebherr-Werk Ehingen GmbH Method and device for monitoring a drive of a lifting winch
EP1103511A3 (en) * 1999-11-23 2001-07-18 Liebherr-Werk Ehingen GmbH Method and device for monitoring a drive of a lifting winch
EP1150019A1 (en) * 2000-04-28 2001-10-31 Hiab AB Counter for registering the quantity of lifts of a crane
EP1356910A1 (en) * 2002-04-24 2003-10-29 Cifa S.p.A. System for controlling and monitoring the operation of self-moving machines with an articulated arm, such as concrete pumps, and maintenance method for said machines
EP1785703A1 (en) * 2005-11-15 2007-05-16 Mettler-Toledo AG Method for monitoring and/or determining the condition of a force measuring device and force measuring device
EP2123589A1 (en) 2008-05-19 2009-11-25 Manitowoc Crane Group France SAS Determination and reconstruction of load changes in lifting devices
KR101108325B1 (en) 2008-05-19 2012-01-25 매니토웍 크레인 그룹 프랑스 에스에이에스 Method of determining and reconstructing changes in load on lifting gear
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
RU182820U1 (en) * 2017-11-30 2018-09-04 Дмитрий Александрович Овруцкий Device for determining the optimal period of maintenance and repair of the product

Also Published As

Publication number Publication date
DE19514050C2 (en) 1999-06-02
DE59608232D1 (en) 2002-01-03
ATE209340T1 (en) 2001-12-15
EP0737851B1 (en) 2001-11-21
DK0737851T3 (en) 2002-05-13
EP0737851A3 (en) 1997-04-09
DE19514050A1 (en) 1996-10-24

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