WO2008083951A1 - Method for determining the wear state of drum linings and/or conveyor belts on belt conveyors - Google Patents

Method for determining the wear state of drum linings and/or conveyor belts on belt conveyors Download PDF

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Publication number
WO2008083951A1
WO2008083951A1 PCT/EP2008/000086 EP2008000086W WO2008083951A1 WO 2008083951 A1 WO2008083951 A1 WO 2008083951A1 EP 2008000086 W EP2008000086 W EP 2008000086W WO 2008083951 A1 WO2008083951 A1 WO 2008083951A1
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WIPO (PCT)
Prior art keywords
drum
belt
webbing
speed
wear
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PCT/EP2008/000086
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German (de)
French (fr)
Inventor
Manfred BÄUMLER
Uwe BÖKER
Bruno Van Den Heuvel
Manfred Ziegler
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Rwe Power Aktiengesellschaft
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Publication of WO2008083951A1 publication Critical patent/WO2008083951A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
    • B65G43/02—Control devices, e.g. for safety, warning or fault-correcting detecting dangerous physical condition of load carriers, e.g. for interrupting the drive in the event of overheating

Definitions

  • the invention relates to a method for determining the state of wear of drum linings and / or conveyor belts on belt conveyors with at least two belt drums and with at least one circulating around this, flexible webbing made of a rubber-elastic material.
  • the invention relates to a method for determining the state of wear of drum linings and / or conveyor belts on belt conveyors as bulk material conveyors for bulk material.
  • Such belt conveyors usually comprise a webbing made of a rubber-elastic, flexible material with embedded therein Stahlseilzugierin or Stahlgewebezugierin / Gewebzugierin.
  • the endlessly driven around and driven drums belt is usually composed of several belt sections.
  • the belt is supported over the length of the belt conveyor both in the lower strand and in the upper strand on roles that are suspended in scaffolding.
  • Such belt conveyors are used, for example, in mining operations, both underground and overground.
  • the energy required for the circulation of the belt is, as already mentioned, introduced via one or more drums in the belt.
  • the operation of the belt conveyor leads to wear of the straps used and the drum pads commonly found on the drums.
  • the state of wear of cover plates of the steel cable as well as the fabric straps of belt conveyors is also measured manually at standstill of the belt conveyor.
  • the belt must rest on a sufficiently level surface.
  • the residual thickness to the tensile member (steel rope or fabric) can be selectively tested by piercing by awl.
  • the invention has for its object to provide a method for determining the state of wear of drum linings and / or conveyor belts on webbing conveyors, which is much easier to handle than the procedures described above and which in particular without stopping the belt conveyor is practicable.
  • the object is achieved by a method for determining the state of wear of drum linings and / or conveyor belts on belt conveyors with at least two belt drums and at least one circulating around this flexible webbing of a rubber-elastic material, which is characterized in that in an operating belt conveyor on a Where the local speed of the webbing is measured and the effective drum radius of at least one drum is calculated using the measured local speed.
  • the invention is based on the finding that both the wear of the drum covering and that of the belt influence the effective drum radius, which directly influences the belt speed.
  • the effective drum radius is the distance between the drum axis of rotation and the neutral fiber in the belt.
  • the product of effective drum radius and angular velocity of the drum corresponds to the local belt speed. If the belt speed is not taken from the drum to be considered, but elsewhere in the belt, then the effective drum radius r w can be calculated:
  • v is the belt speed and ⁇ r is the angular velocity of the drum.
  • the speed of the webbing is measured from a location remote from the location at which the effective drum radius is to be determined.
  • the speed of the webbing is determined in a quasi-stationary state thereof, d. H. at constant speed of the webbing without acceleration or deceleration.
  • the speed of the webbing can be determined, for example, via the rotational speed of a reference drum, wherein the reference drum can be a drum of the webbing, which is subject to little or no wear or as a reference drum is provided especially for the purpose of speed determination drum.
  • the belt speed can alternatively be determined directly on the belt via radar or laser-optical methods.
  • the intervals of the speed measurement can, for example, be selected such that an effective drum radius is determined for each belt section of a webbing composed of n-belt sections. This is particularly useful when the webbing is composed of Gurtabitesen with different state of wear.
  • the effective radius is composed of a proportion that is dependent on the state of wear of the drum and a proportion that is dependent on the state of wear of the webbing. If the drum lining is worn, the speed change due to the lining is superimposed on all belt pieces. In order to keep these two types of wear apart, it makes sense to assign the individual belt sections by means of an automatic belt section detection in their position with respect to the drum to be considered.
  • Gurtabitesserkennung or Gurtsegmenterkennung can be done for example by marking segment start and / or end by means of transponders.
  • a belt-specific induction pattern by means of measuring coils and to compare this with stored and measured induction patterns. Due to typical pattern repetitions, the belt connections can be identified. The connection distances can be compared for example with a Gurtlaufplan over which then an assignment of individual belt sections or belt segments can be done.
  • a single or multi-axis measurement of the magnetic field (terrestrial magnetic field) disturbed by the tension member and / or the connection points of the webbing is carried out by means of at least one magnetic field sensor, wherein individual recurring anomalies of the magnetic field
  • Belt sections or belt segments preferably based on a Gurtlaufplan be identified.
  • This process is preferably carried out without external magnetization of the metal parts vulcanised into the webbing.
  • the measurement can be carried out in a measuring range of up to 200 ⁇ T, preferably of up to 100 ⁇ T.
  • This method does not require a coil arrangement, it is only the use of magnetic field sensors provided, which has the advantage that an enclosure of the webbing with the measuring arrangement is not required, as required for example in the induction pattern recognition.
  • the Measuring signal is not disturbed by the transported material, as long as no ferromagnetic material is conveyed.
  • the measuring signal is independent of direction of travel and speed.
  • a three-axis magnetic field measurement by means of one or more Förster probes has proved to be particularly advantageous.
  • the wear of the belt should, for example, when using a reference drum for speed measurement of the belt section to be assessed do not rest on both drums simultaneously. This can be ensured that the reference drum, for example, with the support side of the belt, so the side facing away from the running side, in contact or has a sufficient distance from the drum whose drum radius is to be determined. Alternatively, it is possible to use only time sections for the speed measurement in which a section transition lies between the drums.
  • the accuracy of the method according to the invention can be increased by taking into account the change in belt length due to different local belt tensions between the location of the reference speed measurement and the drum in the conversion.

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  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • Control Of Conveyors (AREA)

Abstract

The invention relates to a method for determining the wear state of drum linings and/or conveyor belts on belt conveyors comprising at least two belt drums and at least one flexible belt strap revolving around the same, made of rubber-elastic material. The method is characterized in that the local speed of the belt strap is measured on a belt conveyor in operation in at least one location, and that the effective drum radius of at least one drum is calculated using the measured local speed, wherein the effective drum radius directly serves as a measure of the wear state of the belt strap and drum lining.

Description

Verfahren zur Ermittlung des Verschleißzustandes von Trommelbelägen und/oder Fördergurten an Gurtbandförderern Method for determining the state of wear of drum linings and / or conveyor belts on belt conveyors
Die Erfindung betrifft ein Verfahren zur Ermittlung des Verschleißzustandes von Trommelbelägen und/oder Fördergurten an Gurtbandförderern mit wenigstens zwei Gurttrommeln und mit wenigstens einem um diese umlaufenden, flexiblen Gurtband aus einem gummielastischen Material.The invention relates to a method for determining the state of wear of drum linings and / or conveyor belts on belt conveyors with at least two belt drums and with at least one circulating around this, flexible webbing made of a rubber-elastic material.
Die Erfindung betrifft insbesondere ein Verfahren zur Ermittlung des Verschleißzustandes von Trommelbelägen und/oder Fördergurten an Gurtbandförderern als Massengutförderer für Schüttgut.In particular, the invention relates to a method for determining the state of wear of drum linings and / or conveyor belts on belt conveyors as bulk material conveyors for bulk material.
Derartige Gurtbandförderer umfassen üblicherweise ein Gurtband aus einem gummielastischen, flexiblen Material mit in dieses eingebetteten Stahlseilzugträgern oder Stahlgewebezugträgern/Gewebezugträgern. Der endlos um angetriebene und mitlaufende Trommeln umlaufende Gurt ist üblicherweise aus mehreren Gurtabschnitten zusammengesetzt. Der Gurt stützt sich über die Länge des Gurtbandförderers sowohl im Untertrum als auch im Obertrum auf Rollen ab, die in Gerüsten aufgehängt sind. Solche Gurtbandförderer finden beispielsweise in Bergbaubetrieben sowohl unter Tage als auch über Tage Anwendung.Such belt conveyors usually comprise a webbing made of a rubber-elastic, flexible material with embedded therein Stahlseilzugträgern or Stahlgewebezugträgern / Gewebzugträgern. The endlessly driven around and driven drums belt is usually composed of several belt sections. The belt is supported over the length of the belt conveyor both in the lower strand and in the upper strand on roles that are suspended in scaffolding. Such belt conveyors are used, for example, in mining operations, both underground and overground.
Die für den Umlauf des Gurtbandes benötigte Energie wird, wie eingangs bereits erwähnt, über eine oder mehrere Trommeln in den Gurt eingeleitet. Der Betrieb des Gurtbandförderers führt zum Verschleiß der eingesetzten Gurte und der auf den Trommeln üblicherweise vorhandenen Trommelbeläge.The energy required for the circulation of the belt is, as already mentioned, introduced via one or more drums in the belt. The operation of the belt conveyor leads to wear of the straps used and the drum pads commonly found on the drums.
Bei einer Gurtbandförderanlage ist die Erfassung des aktuellen Verschleißzustandes sowohl der Trommelbeläge als auch des Gurtes für eine Instandhaltungsplanung unerlässlich. Zu frühes Wechseln der Gurte oderIn a belt conveyor system, the detection of the current state of wear of both the drum pads and the belt is essential for maintenance planning. Too early changing the straps or
Instandsetzen der Trommelbeläge verschenkt Restgebrauchswert, wird hingegen der optimale Wechselzeitpunkt verpasst, so ergeben sich daraus Folgeschäden. So erleidet eine Trommel ohne Trommelbelag in relativ kurzer Zeit solche Schäden, dass die Trommel insgesamt unbrauchbar wird. Ein zu großer Verschleiß der Gurte führt unter Umständen zum Freilegen der Zugträger, wodurch die Zugträger selbst und damit auch der Gurt Festigkeitsverlust erleiden. Darüber hinaus kann beispielsweise das Austreten von Stahlseilen aus den Gurtbändern zu Beschädigungen der Trommeln führen.Repairing the drum coverings gives away the residual value of use, however, if the optimum change time is missed, consequential damage results. Thus, a drum without a drum covering suffers such damage in a relatively short time that the drum becomes unusable altogether. One too big Wear of the straps leads under certain circumstances to the exposure of the tension members, whereby the tension members themselves and thus also the belt suffer strength loss. In addition, for example, the leakage of steel cables from the straps lead to damage to the drums.
Bislang wird beispielsweise die Restbelagstärke von Trommelbelägen bei Stillstand des Gurtbandförderers mittels Schlagschnur und Zollstock gemessen. Dieses Verfahren ist verhältnismäßig umständlich.So far, for example, the residual thickness of drum coverings is measured at standstill of the belt conveyor using chalk line and folding rule. This procedure is relatively cumbersome.
Der Verschleißzustand von Deckplatten der Stahlseil- und auch der Gewebegurte von Gurtbandförderanlagen wird ebenfalls manuell bei Stillstand des Gurtbandförderers gemessen. Hierzu muss der Gurt auf einer hinreichend ebenen Unterlage aufliegen. Die Restdicke zum Zugträger (Stahlseil oder Gewebe) kann punktuell auch durch Einstechen mittels Ahle geprüft werden.The state of wear of cover plates of the steel cable as well as the fabric straps of belt conveyors is also measured manually at standstill of the belt conveyor. For this purpose, the belt must rest on a sufficiently level surface. The residual thickness to the tensile member (steel rope or fabric) can be selectively tested by piercing by awl.
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zur Ermittlung des Verschleißzustandes von Trommelbelägen und/oder Fördergurten an Gurtbandförderern bereitzustellen, welches wesentlich einfacher handhabbar ist als die zuvor beschriebenen Vorgehensweisen und welches insbesondere ohne Stillsetzung der Gurtbandförderanlage praktizierbar ist.The invention has for its object to provide a method for determining the state of wear of drum linings and / or conveyor belts on webbing conveyors, which is much easier to handle than the procedures described above and which in particular without stopping the belt conveyor is practicable.
Die Aufgabe wird gelöst durch ein Verfahren zur Ermittlung des Verschleißzustandes von Trommelbelägen und/oder Fördergurten an Gurtbandförderern mit wenigstens zwei Gurttrommeln und wenigstens einem um diese umlaufenden flexiblen Gurtband aus einem gummielastischen Material, welches sich dadurch auszeichnet, das bei einem in Betrieb befindlichen Gurtbandförderer an einer Stelle die örtliche Geschwindigkeit des Gurtbandes gemessen wird und der wirksame Trommelradius wenigstens einer Trommel unter Verwendung der gemessenen örtlichen Geschwindigkeit errechnet wird.The object is achieved by a method for determining the state of wear of drum linings and / or conveyor belts on belt conveyors with at least two belt drums and at least one circulating around this flexible webbing of a rubber-elastic material, which is characterized in that in an operating belt conveyor on a Where the local speed of the webbing is measured and the effective drum radius of at least one drum is calculated using the measured local speed.
Der Erfindung liegt die Erkenntnis zugrunde, dass sowohl der Verschleiß des Trommelbelags als auch derjenige des Gurtbandes den wirksamen Trommelradius beeinflussen, der unmittelbar die Gurtgeschwindigkeit beeinflusst. Der wirksame Trommelradius ist der Abstand zwischen der Trommel-Drehachse und der neutralen Faser im Gurt. Das Produkt aus wirksamem Trommelradius und Winkelgeschwindigkeit der Trommel entspricht der örtlichen Gurtgeschwindigkeit. Wird die Gurtgeschwindigkeit nicht an der zu betrachtenden Trommel abgenommen, sondern an anderer Stelle des Gurtbandes, so kann der wirksame Trommelradius rw errechnet werden:The invention is based on the finding that both the wear of the drum covering and that of the belt influence the effective drum radius, which directly influences the belt speed. The effective drum radius is the distance between the drum axis of rotation and the neutral fiber in the belt. The product of effective drum radius and angular velocity of the drum corresponds to the local belt speed. If the belt speed is not taken from the drum to be considered, but elsewhere in the belt, then the effective drum radius r w can be calculated:
rw = v/ωτr,r w = v / ωτ r,
wobei v die Gurtgeschwindigkeit und ωτrdie Winkelgeschwindigkeit der Trommel bezeichnen.where v is the belt speed and ωτ r is the angular velocity of the drum.
Zweckmäßigerweise wird die Geschwindigkeit des Gurtbandes von einer Stelle gemessen, die von der Stelle entfernt ist, an der der wirksame Trommelradius ermittelt werden soll.Conveniently, the speed of the webbing is measured from a location remote from the location at which the effective drum radius is to be determined.
Bevorzugt wird die Geschwindigkeit des Gurtbandes in einem quasi stationären Zustand desselben ermittelt, d. h. bei gleichbleibender Geschwindigkeit des Gurtbandes ohne Beschleunigung oder Verzögerung.Preferably, the speed of the webbing is determined in a quasi-stationary state thereof, d. H. at constant speed of the webbing without acceleration or deceleration.
Die Geschwindigkeit des Gurtbandes kann beispielsweise über die Drehzahl einer Referenztrommel ermittelt werden, wobei die Referenztrommel eine Trommel des Gurtbandes sein kann, die entweder keinem oder kaum Verschleiß unterliegt oder als Referenztrommel eine besonders für die Zwecke der Geschwindigkeitsermittlung vorgesehene Trommel ist.The speed of the webbing can be determined, for example, via the rotational speed of a reference drum, wherein the reference drum can be a drum of the webbing, which is subject to little or no wear or as a reference drum is provided especially for the purpose of speed determination drum.
Die Gurtgeschwindigkeit kann alternativ direkt am Gurt über Radar- oder laseroptische Verfahren ermittelt werden.The belt speed can alternatively be determined directly on the belt via radar or laser-optical methods.
Die Intervalle der Geschwindigkeitsmessung können beispielsweise so gewählt werden, dass für jeden Gurtabschnitt eines aus n-Gurtabschnitten zusammengesetzten Gurtbandes jeweils ein wirksamer Trommelradius ermittelt wird. Dies ist insbesondere dann sinnvoll, wenn das Gurtband aus Gurtabschnitten mit unterschiedlichem Verschleißzustand zusammengesetzt ist. Der wirksame Radius setzt sich zusammen aus einem Anteil, der abhängig vom Verschleißzustand der Trommel ist und einem Anteil, der abhängig vom Verschleißzustand des Gurtbandes ist. Verschleißt der Trommelbelag, so überlagert sich für alle Gurtstücke die belagbedingte Geschwindigkeitsänderung. Um diese beiden Verschleißarten auseinander halten zu können, ist es sinnvoll, die einzelnen Gurtabschnitte mittels einer automatischen Gurtabschnittserkennung in ihrer Lage bezüglich der zu betrachtenden Trommel zuzuordnen.The intervals of the speed measurement can, for example, be selected such that an effective drum radius is determined for each belt section of a webbing composed of n-belt sections. This is particularly useful when the webbing is composed of Gurtabschnitten with different state of wear. The effective radius is composed of a proportion that is dependent on the state of wear of the drum and a proportion that is dependent on the state of wear of the webbing. If the drum lining is worn, the speed change due to the lining is superimposed on all belt pieces. In order to keep these two types of wear apart, it makes sense to assign the individual belt sections by means of an automatic belt section detection in their position with respect to the drum to be considered.
Die Gurtabschnittserkennung bzw. Gurtsegmenterkennung kann beispielsweise durch Markierung von Segmentanfang und/oder -ende mittels Transpondern erfolgen.The Gurtabschnittserkennung or Gurtsegmenterkennung can be done for example by marking segment start and / or end by means of transponders.
Alternativ ist es möglich, mittels Messspulen ein gurtspezifisches Induktionsmuster zu erfassen und dieses mit hinterlegten und gemessenen Induktionsmustern zu vergleichen. Aufgrund typischer Musterwiederholungen lassen sich die Gurtverbindungen identifizieren. Die Verbindungsabstände können beispielsweise mit einem Gurtlaufplan verglichen werden, über den dann eine Zuordnung einzelner Gurtabschnitte bzw. Gurtsegmente erfolgen kann.Alternatively, it is possible to detect a belt-specific induction pattern by means of measuring coils and to compare this with stored and measured induction patterns. Due to typical pattern repetitions, the belt connections can be identified. The connection distances can be compared for example with a Gurtlaufplan over which then an assignment of individual belt sections or belt segments can be done.
Bei einer bevorzugten Variante gemäß der Erfindung ist vorgesehen, dass eine ein- oder mehrachsige Messung des von dem Zugträger und/oder den Verbindungsstellen des Gurtbandes gestörten magnetischen Feldes (Erdmagnetfeldes) mittels wenigstens eines Magnetfeldsensors durchgeführt wird, wobei anhand wiederkehrender Anomalien des Magnetfeldes einzelneIn a preferred variant according to the invention, it is provided that a single or multi-axis measurement of the magnetic field (terrestrial magnetic field) disturbed by the tension member and / or the connection points of the webbing is carried out by means of at least one magnetic field sensor, wherein individual recurring anomalies of the magnetic field
Gurtabschnitte bzw. Gurtsegmente, vorzugsweise anhand eines Gurtlaufplans, identifiziert werden. Dieses Verfahren wird vorzugsweise ohne Fremdmagnetisierung der in das Gurtband einvulkanisierten Metallteile durchgeführt. Die Messung kann in einem Messbereich von bis zu 200 μT, vorzugsweise von bis zu 100 μT durchgeführt werden. Dieses Verfahren kommt ohne eine Spulenanordnung aus, es ist lediglich die Verwendung von Magnetfeldsensoren vorgesehen, was den Vorzug hat, dass eine Umschließung des Gurtbandes mit der Messanordnung nicht erforderlich ist, wie dies beispielsweise bei der Induktionsmustererkennung erforderlich ist. Das Messsignal wird nicht von dem Fördergut gestört, solange kein ferromagnetisches Material gefördert wird. Darüber hinaus ist das Messsignal laufrichtungs- und geschwindigkeitsunabhängig.Belt sections or belt segments, preferably based on a Gurtlaufplan be identified. This process is preferably carried out without external magnetization of the metal parts vulcanised into the webbing. The measurement can be carried out in a measuring range of up to 200 μT, preferably of up to 100 μT. This method does not require a coil arrangement, it is only the use of magnetic field sensors provided, which has the advantage that an enclosure of the webbing with the measuring arrangement is not required, as required for example in the induction pattern recognition. The Measuring signal is not disturbed by the transported material, as long as no ferromagnetic material is conveyed. In addition, the measuring signal is independent of direction of travel and speed.
Als besonders vorteilhaft hat sich eine dreiachsige Magnetfeldmessung mittels einer oder mehrerer Förstersonden erwiesen.A three-axis magnetic field measurement by means of one or more Förster probes has proved to be particularly advantageous.
Mittels der Erkennung einzelner Abschnitte des Gurtbandes ist unter Zuhilfenahme des errechneten wirksamen Trommelradius eine Differenzierung zwischen Verschleiß des Trommelbelags und Verschleiß des Gurtbandes möglich.By means of the detection of individual portions of the webbing, a differentiation between wear of the drum pad and wear of the webbing is possible with the aid of the calculated effective drum radius.
Zur Ermittlung des Gurtverschleißes sollte beispielsweise bei Verwendung einer Referenztrommel zur Geschwindigkeitsmessung der zu beurteilende Gurtabschnitt nicht auf beiden Trommeln gleichzeitig aufliegen. Dies kann dadurch gewährleistet werden, dass die Referenztrommel beispielsweise mit der Tragseite des Gurtes, also der der Laufseite abgewandten Seite, in Berührung ist oder einem ausreichenden Abstand zu der Trommel hat, deren Trommelradius ermittelt werden soll. Alternativ ist es möglich, für die Geschwindigkeitsmessung nur Zeitabschnitte heranzuziehen, in denen zwischen den Trommeln ein Abschnittsübergang liegt.To determine the wear of the belt should, for example, when using a reference drum for speed measurement of the belt section to be assessed do not rest on both drums simultaneously. This can be ensured that the reference drum, for example, with the support side of the belt, so the side facing away from the running side, in contact or has a sufficient distance from the drum whose drum radius is to be determined. Alternatively, it is possible to use only time sections for the speed measurement in which a section transition lies between the drums.
Die Genauigkeit des erfindungsgemäßen Verfahrens kann dadurch gesteigert werden, dass die Gurtlängenänderung aufgrund unterschiedlicher örtlicher Gurtspannungen zwischen dem Ort der Referenzgeschwindigkeitsmessung und der Trommel in der Umrechnung berücksichtigt wird. The accuracy of the method according to the invention can be increased by taking into account the change in belt length due to different local belt tensions between the location of the reference speed measurement and the drum in the conversion.

Claims

Ansprüche claims
1. Verfahren zur Ermittlung des Verschleißzustandes von Trommelbelägen und/oder Fördergurten an Gurtbandförderern mit wenigstens zwei Gurttrommeln und wenigstens einem um diese umlaufenden, flexiblen1. A method for determining the state of wear of drum linings and / or conveyor belts on belt conveyors with at least two belt drums and at least one circulating around this, flexible
Gurtband aus einem gummielastischen Material, dadurch gekennzeichnet, dass bei einem in Betrieb befindlichen Gurtbandförderer an wenigstens einer Stelle die örtliche Geschwindigkeit des Gurtbandes gemessen wird und der wirksame Trommelradius wenigstens einer Trommel unter Verwendung der gemessenen örtlichen Geschwindigkeit errechnet wird.Webbing of a rubber-elastic material, characterized in that in an operating webbing conveyor at least one location, the local speed of the webbing is measured and the effective drum radius of at least one drum is calculated using the measured local speed.
2. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, dass die Geschwindigkeit des Gurtbandes an einer Stelle gemessen wird, die von der Stelle entfernt ist, an der der wirksame Trommelradius ermittelt werden SOlI.2. The method according to claim 1, characterized in that the speed of the webbing is measured at a location which is remote from the point at which the effective drum radius are determined SOI.
3. Verfahren nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass die Geschwindigkeit des Gurtbandes in einem quasi stationären Zustand desselben ermittelt wird.3. The method according to any one of claims 1 or 2, characterized in that the speed of the webbing is determined in a quasi-stationary state thereof.
4. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Geschwindigkeit des Gurtbandes über die Drehzahl einer Referenztrommel ermittelt wird.4. The method according to any one of claims 1 to 3, characterized in that the speed of the webbing is determined by the speed of a reference drum.
5. Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Intervalle der Geschwindigkeitsmessung so gewählt werden, dass für jeden Gurtabschnitt eines aus n-Gurtabschnitten zusammengesetzten Gurtbandes jeweils ein wirksamer Trommelradius ermittelt wird.5. The method according to any one of claims 1 to 4, characterized in that the intervals of the speed measurement are selected so that in each case an effective drum radius is determined for each belt portion of a composite of n-strap sections webbing.
6. Verfahren nach Anspruch 5, dadurch gekennzeichnet, dass einzelne6. The method according to claim 5, characterized in that individual
Gurtabschnitte mittels einer automatischen Gurtabschnitterkennung in ihrer Lage bezüglich der zu betrachtenden Trommel zugeordnet werden. Belt sections are assigned by means of an automatic Gurtabschnitterkennung in position with respect to the drum to be considered.
7. Verfahren nach Anspruch 6, dadurch gekennzeichnet, dass die Gurtabschnittserkennung mittels Erfassung eines gurtspezifischen Induktionsmusters und durch den Vergleich von hinterlegten und gemessenen Induktionsmustern erfolgt.7. The method according to claim 6, characterized in that the Gurtabschnittserkennung carried out by detecting a belt-specific induction pattern and by the comparison of stored and measured induction patterns.
8. Verfahren nach Anspruch 6, dadurch gekennzeichnet, dass eine ein- oder mehrachsige Messung des von dem Zugträger und/oder den Verbindungsstellen des Gurtbandes gestörten magnetischen Feldes mittels wenigstens eines Magnetfeldsensors durchgeführt wird, wobei anhand wiederkehrender Anomalien des Magnetfeldes einzelne Gurtabschnitte, vorzugsweise anhand eines Gurtlaufplanes, identifiziert werden.8. The method according to claim 6, characterized in that a single or multi-axis measurement of the disturbed by the tension member and / or the connection points of the webbing magnetic field is carried out by means of at least one magnetic field sensor, based on recurring anomalies of the magnetic field individual belt sections, preferably based on a Gurtlaufplanes be identified.
9. Verfahren nach Anspruch 8, dadurch gekennzeichnet, dass es ohne Fremdmagnetisierung durchgeführt wird.9. The method according to claim 8, characterized in that it is carried out without external magnetization.
10. Verfahren nach einem der Ansprüche 5 bis 9, dadurch gekennzeichnet, dass mittels der Erkennung einzelner Abschnitte des Gurtbandes unter Zuhilfenahme des errechneten wirksamen Trommelradius eine Differenzierung zwischen Verschleiß des Trommelbelags und Verschleiß des Gurtbandes erfolgt. 10. The method according to any one of claims 5 to 9, characterized in that by means of the detection of individual portions of the webbing with the aid of the calculated effective drum radius differentiation between wear of the drum pad and wear of the webbing takes place.
PCT/EP2008/000086 2007-01-12 2008-01-09 Method for determining the wear state of drum linings and/or conveyor belts on belt conveyors WO2008083951A1 (en)

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DE200710002641 DE102007002641A1 (en) 2007-01-12 2007-01-12 Method for determining the state of wear of drum linings and / or conveyor belts on belt conveyors
DE102007002641.4 2007-01-12

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DE112004001238T5 (en) * 2003-07-09 2006-06-14 Bridgestone Corp. A method and apparatus for measuring the elongation of a conveyor belt, method and apparatus for measuring the wear of a conveyor belt, method and apparatus for measuring the temperature of a conveyor belt, a magnetic rubber sheet and a method for producing a magnetic rubber sheet

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US4575367A (en) * 1984-08-06 1986-03-11 General Motors Corporation Slip speed sensor for a multiple link belt drive system
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US2998889A (en) * 1960-08-05 1961-09-05 Stewart Warner Corp Synchronous pulse generator and drive
DE112004001238T5 (en) * 2003-07-09 2006-06-14 Bridgestone Corp. A method and apparatus for measuring the elongation of a conveyor belt, method and apparatus for measuring the wear of a conveyor belt, method and apparatus for measuring the temperature of a conveyor belt, a magnetic rubber sheet and a method for producing a magnetic rubber sheet
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