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WO1996026139A1 - Conveyor with belt motion monitoring device - Google Patents

Conveyor with belt motion monitoring device Download PDF

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Publication number
WO1996026139A1
WO1996026139A1 PCT/DE1996/000340 DE9600340W WO9626139A1 WO 1996026139 A1 WO1996026139 A1 WO 1996026139A1 DE 9600340 W DE9600340 W DE 9600340W WO 9626139 A1 WO9626139 A1 WO 9626139A1
Authority
WO
WIPO (PCT)
Prior art keywords
belt
conveyor
sensor
permanent magnets
conveyor according
Prior art date
Application number
PCT/DE1996/000340
Other languages
German (de)
French (fr)
Inventor
Franz-W. Aumund
Hans-Theo Pieters
Original Assignee
Aumund-Fördererbau Gmbh Maschinenfabrik
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 Aumund-Fördererbau Gmbh Maschinenfabrik filed Critical Aumund-Fördererbau Gmbh Maschinenfabrik
Publication of WO1996026139A1 publication Critical patent/WO1996026139A1/en

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Classifications

    • 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
    • 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
    • B65G2203/00—Indexing code relating to control or detection of the articles or the load carriers during conveying
    • B65G2203/04—Detection means
    • B65G2203/042—Sensors
    • B65G2203/044—Optical

Definitions

  • the invention relates to a conveyor with belt run monitoring device, in which along the running direction of the belt at a distance from each other permanent magnets are attached to the belt and at least one magnet elder-detecting sensor is assigned to the conveyor.
  • a conveyor with the above-mentioned features is described in DE-OS 17 81 133, in this case sin ⁇ , permanent magnets are fastened to the belt material along the running direction of the belt, which together with a conductor loop also attached in the belt essentially transversely to its running direction and one assigned receivers for monitoring the belt with regard to the occurrence of longitudinal cracks in the belt. Furthermore, it is known from DE-OS 22 43 579 to provide a permanent magnet in connection with a detector search coil in the conveyor belt material at a distance from one another and outside the belt for monitoring the misalignment of the conveyor belt. However, the two known measures allow only a very limited monitoring of the belt.
  • a problem with such conveyors is that a clamping connection summarizing the ends of the belt to be set up endlessly has a clamping function during the Lifetime of the claimant can decrease, so that in many respects disadvantageous belt elongation can occur, which is not recognizable with the monitoring measures described above.
  • the invention is therefore based on the object of setting up a corresponding monitoring function for a conveyor with the generic features.
  • the basic idea of the invention is that a permanent magnet in each case in the belt running direction is arranged in front of and behind a clamping connection that summarizes the ends of the belt and that the connection is immediately adjacent, and that the sensor is connected to an evaluation unit in which the permanent magnet on the sensor passes as it passes Time and / or path difference assigned by this sensor signals assigned and the actual value determined in this way is compared with a predetermined target value.
  • the advantage associated with the invention is that, when the clamp connection deteriorates, the slipping out of the ends of the belt webbing from the clamp connection can be recognized via the detectable belt elongation, so that the clamp connection can be checked in good time before the damage occurs and the belt can be re-fitted.
  • the permanent magnets embedded in the belt material have such a strong magnetic field that even with rough operating conditions, a more secure detection or permanent magnets is provided by the open sensor, but otherwise the permanent magnets are also at a sufficiently large distance can run past the sensor, so that this ensures operational reliability of the monitoring device.
  • the permanent magnets are arranged in areas in which the fastening elements for the cup fastening or the screws for the clamp connection are seated in a conveyor used as a bucket elevator.
  • the monitoring device provided according to the features of the invention can expediently also be used for a known skew monitoring, in addition to that of the
  • Permanent magnets assigned to the clamp connection along the running direction of the belt are attached to the belt material at a distance from each other and by the conveyor is assigned at least one magnetic field-detecting sensor with a measuring length oriented transversely to the running direction of the permanent magnets, with different measuring lengths and different center deviations of the belt transversely signal levels corresponding to the direction of travel are generated.
  • the senor is connected to a display device for visual visualization of the positional deviation of the permanent magnets embedded in the belt, so that the time of a necessary correction of the belt run can be recognized via this display device. Additionally or alternatively, provision can be made to couple the sensor to a suitably equipped device which, in the event of the permissible center deviation being exceeded, triggers an alarm or immediately stops the conveyor.
  • the measuring length of the magnetic field-detecting sensor expediently corresponds to twice the permissible center deviation of the belt.
  • the permanent magnets with regard to the attachment of the permanent magnets to the belt material, provision is made for the permanent magnets to be inserted directly into the belt material.
  • the requestor be assigned a plurality of magnetic field-detecting sensors, wherein it may be expedient to arrange a magnetic field-recognizing sensor in the head area and / or in the foot area of the requestor.
  • FIG. 3 shows a partial front view of the belt of a conveyor in the area of the monitoring device
  • Fig. 4 shows the subject of Figure 3 in a side view.
  • the belt bucket elevator comprises a bucket elevator housing 10, in which a belt 14 rotates in the direction of the arrow 13 between a bucket elevator head 11 and a bucket elevator foot 12, a drive drum 27 being arranged in the bucket elevator head 11; on the belt 14 cups 15 are attached for bulk material conveyance.
  • the running of the belt 14 can be influenced by adjusting the tensioning axis 18, the tensioning axis 18 being effected by adjusting the tensioning spindles 19.
  • the arrangement of the sensor 17 and the permanent magnets 16 is shown more clearly in FIGS. 3 and 4; the permanent magnets 16 are embedded in the belt 14 in its longitudinal axis 20 at a distance from one another.
  • the sensor 17 is fixed to a bracket 23 fastened to the bucket elevator housing 10 and aligned transversely to the longitudinal axis 20 of the belt 14; the measuring length 21 of the sensor 17 extending over the sensor axis 22 is dimensioned such that the measuring length 21 corresponds to twice the permissible center deviation of the belt 14 when it is running.
  • the cups 15 are fastened in the belt material by means of fastening screws 26.
  • the measuring length 21 can be adapted to the operational support in the event of use and can also be less than twice the permissible center deviation of the belt 14.
  • the permanent magnets 16 pass the sensor 17; If a permanent magnet 16 crosses the sensor 17, the position of the magnetic field of the permanent magnet 16 along the sensor axis 22 is ascertained and converted into a sensor output signal proportional to the magnetic field position, signals of different heights and a center deviation of the belt being generated transversely to the running direction;
  • This sensor output signal is made optically visible in a suitable display device, preferably on a display, so that the belt run can be corrected by adjusting the tensioning spindles 19.
  • An integration in a monitoring system with an alarm or switch-off of the conveyor is also possible.
  • FIGS. 3 and 4 also show the monitoring of the clamp connection 24 provided in accordance with the invention, in which the ends of the belt 14 are combined.
  • permanent magnets 16 are inserted into the belt material in the direction of travel of the belt 13 in front of and behind the clamping connection 24, the distance 25 measured over the longitudinal axis 20 of this belt being given as the desired corresponding desired value; When the permanent magnets 16 pass the sensor 17, this distance 25 corresponds to a certain time between two output signals from the sensor 17. If the clamping function of the clamping connection 24 subsides and, as a result, the belt 14 slowly pulls out of the clamping connection 24, the Distance 25 between the two permanent magnets 16 larger, and extended when the permanent magnet 16 passes the sensor 17 the actual time interval between the

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  • Control Of Conveyors (AREA)

Abstract

A conveyor with a belt motion monitoring device has permanent magnets (16) secured to the belt material and spaced apart from each other in the longitudinal axis (20) of the belt (14). Seen in the direction of travel (13) of the belt, the permanent magnets (16) are arranged upstream and downstream of a clamp (24) that interconnects the ends of the belt (14) and are directly adjacent thereto. Sensor (17) is connected to an evaluation unit in which signals emitted by the sensor (17), when the permanent magnets (16) run past it, are associated to time and/or travel distance differences and the thus determined real value is compared with a predetermined set value.

Description

Förderer mit Gurtlauf-Uberwachungseinrichtung Conveyor with belt run monitoring device
Die Erfindung betrifft einen Förderer mit Gurtlauf- Uberwachungseinrichtung, bei welchem längs der Laufrichtung des Gurtes mit Abstand zueinander Dauermagnete an dem Gurt befestigt und dem Forderer wenigstens ein magnet elderkennender Sensor zugeordnet ist.The invention relates to a conveyor with belt run monitoring device, in which along the running direction of the belt at a distance from each other permanent magnets are attached to the belt and at least one magnet elder-detecting sensor is assigned to the conveyor.
Ein Förderer mit den vorgenannten Merkmalen ist in der DE-OS 17 81 133 beschrieben, bei diesem Forderer sinα längs der Laufrichtung des Gurtes Dauermagnete an dem Gurtmatenal befestigt, die gemeinsam mit einer ebenfalls in dem Gurt im wesentlichen quer zu dessen Laufrichtung angebrachten Leiterschleife und einem zugeordneten Empfänger zu einer Überwachung des Gurtes bezüglich des Auftretens von Längsrissen im Gurt eingerichtet sind. Weiterhin ist es aus der DE-OS 22 43 579 bekannt, zur Schieflaufuoerwachung des Fördergurtes bei einem Forderer in dem Gurtbandmaterial in Abstand zueinander und außerhalb des Gurtes einen Dauermagneten in Verbindung mit einer Detektor-Suchspule vorzusehen. Die beiden bekannten Maßnahmen erlauben jedoch nur eine eng begrenzte Überwachung des Gurtes.A conveyor with the above-mentioned features is described in DE-OS 17 81 133, in this case sinα, permanent magnets are fastened to the belt material along the running direction of the belt, which together with a conductor loop also attached in the belt essentially transversely to its running direction and one assigned receivers for monitoring the belt with regard to the occurrence of longitudinal cracks in the belt. Furthermore, it is known from DE-OS 22 43 579 to provide a permanent magnet in connection with a detector search coil in the conveyor belt material at a distance from one another and outside the belt for monitoring the misalignment of the conveyor belt. However, the two known measures allow only a very limited monitoring of the belt.
Ein Problem bei derartigen Förderern besteht darin, daß eine die Enden des endlos einzurichtenden Gurtes zusammenfassende Klemmverbindung in ihrer Klemmfunktion wahrend der Lebensdauer des Forderers nachlassen kann, so daß eine in vielfacher Hinsicht nachteilige Gurtlangung eintreten kann, die mit den vorstehend beschriebenen Uberwachungsmaßnah en nicht erkennbar ist. Der Erfindung liegt daher die Aufgabe zugrunde, für einen Förderer mit den gattungsgemaßen Merkmalen eine entsprechende Uberwachungsfunktion einzurichten.A problem with such conveyors is that a clamping connection summarizing the ends of the belt to be set up endlessly has a clamping function during the Lifetime of the claimant can decrease, so that in many respects disadvantageous belt elongation can occur, which is not recognizable with the monitoring measures described above. The invention is therefore based on the object of setting up a corresponding monitoring function for a conveyor with the generic features.
Die Losung dieser Aufgabe ergibt sich einschließlich vorteilhafter Ausgestaltungen und Weiterbildungen aus dem Inhalt oer Patentansprüche, welcne dieser Beschreibung nachgestellt sind.The solution to this problem, including advantageous refinements and developments, results from the content of the patent claims, which are reproduced from this description.
Die Erfindung sieht in ihrem Grundgedanken vor, daß jeweils ein Dauermagnet in Gurtlaufrichtung vor und hinter einer die Enden des Gurtes zusammenfassenden Klemmverbindung und dieser unmittelbar benachbart angeordnet ist und daß der Sensor mit einer Auswerteeinheit verbuπαen ist, in welcher den bei Vorbeilauf der Dauermagnete an dem Sensor von diesem abgegebenen Sensorsignalen Zeit- und/oder Wegdifferenzeπ zugeordnet und der so ermittelte Ist-Wert einem vorgegebenen Soll-Wert gegenübergestellt wi d. Somit ist mit oer Erfindung der Vorteil verbunden, daß bei nacnlassender Funktion der Klemmverbindung das Herausrutschen der Enden des Gurtbaπdes aus der Klemmverbindung über die erfaßbare Gurtlangung erkennbar ist, so daß rechtzeitig vor dem Eintritt weiterer Schaden αie Klemmverbindung überprüft und oer Fordergurt neu eiπgencnteτ werden kann.The basic idea of the invention is that a permanent magnet in each case in the belt running direction is arranged in front of and behind a clamping connection that summarizes the ends of the belt and that the connection is immediately adjacent, and that the sensor is connected to an evaluation unit in which the permanent magnet on the sensor passes as it passes Time and / or path difference assigned by this sensor signals assigned and the actual value determined in this way is compared with a predetermined target value. Thus, the advantage associated with the invention is that, when the clamp connection deteriorates, the slipping out of the ends of the belt webbing from the clamp connection can be recognized via the detectable belt elongation, so that the clamp connection can be checked in good time before the damage occurs and the belt can be re-fitted.
Nach einem Ausfuhrungsbeispiel der Erfindung weisen die in das Gurtmatenal eingelassenen Dauermagnete eine solche agnetfeldstarke auf, daß auch bei rauhen BetnebsDedinguπgen eine sicnere ErkennDaron oer Dauermagnete durch oen Sensor gegeben ist, im übrigen aber die Dauerπagnete auch in einem ausreichend großen Abstand an dem Sensor vorbeilaufen können, so daß hierdurch die Betriebssicherheit der Überwachungseinrichtung gegeben ist.According to an exemplary embodiment of the invention, the permanent magnets embedded in the belt material have such a strong magnetic field that even with rough operating conditions, a more secure detection or permanent magnets is provided by the open sensor, but otherwise the permanent magnets are also at a sufficiently large distance can run past the sensor, so that this ensures operational reliability of the monitoring device.
Nach einem Ausführungsbeispiel der Erfindung mit einem eine Stahlseilarmierung bzw. Textilarmierung aufweisenden Gurt ist vorgesehen, daß die Dauermagnete in Bereichen angeordnet sind, in denen auch die Befestigungselemente für die Becherbefestigung bzw. die Schrauben für die Klemmverbindung bei einem als Becherwerk eingesetzten Förderer sitzen.According to an embodiment of the invention with a steel cable armouring or textile armouring belt it is provided that the permanent magnets are arranged in areas in which the fastening elements for the cup fastening or the screws for the clamp connection are seated in a conveyor used as a bucket elevator.
Die gemäß den Merkmalen der Erfindung vorgesehene Überwachungseinrichtung kann zweckmäßig aber auch zu einer an sich bekannten SchieflaufÜberwachung herangezogen werden, indem zusätzlich zu den derThe monitoring device provided according to the features of the invention can expediently also be used for a known skew monitoring, in addition to that of the
Klemmverbindung zugeordneten Dauermagneten längs der Laufrichtung des Gurtes mit Abstand zueinander weitere Dauermagnete an dem Gurtmaterial befestigt sind und indem dem Förderer wenigstens ein magnetfeldεrkennender Sensor mit einer quer zur Laufrichtung der Dauermagnete ausgerichteten Meßlänge zugeordnet ist, wobei bei unterschiedlichen Meßlängen unterschiedlich hohe und einer Mittenabweichung des Gurtes quer zur Laufrichtung entsprechende Signalpegel erzeugt werden .Permanent magnets assigned to the clamp connection along the running direction of the belt are attached to the belt material at a distance from each other and by the conveyor is assigned at least one magnetic field-detecting sensor with a measuring length oriented transversely to the running direction of the permanent magnets, with different measuring lengths and different center deviations of the belt transversely signal levels corresponding to the direction of travel are generated.
Nach einem Ausführungsbeispiel der Erfindung ist dazu der Sensor mit einem Anzeigegerät zur optischen Sichtbarmachung der Lageabweichung der in den Gurt eingelassenen Dauermagnete verbunden, so daß über dieses Anzeigegerät der Zeitpunkt einer erforderlichen Korrektur des Gurtlaufes erkennbar ist. Zusätzlich beziehungsweise alternativ kann vorgesehen sein, den Sensor mit einem entsprechend ausgerüsteten Gerät zu koppeln, welches im Falle der Überschreitung der zulässigen Mitteπabweichung einen Alarm auslöst beziehungsweise den Förderer sogleich stillsetzt. Zweckmäßig entspricht die Meßlange des magnetfelderkennenden Sensors dem Doppelten der zulassigen Mittenabweichung des Gurtes .According to one embodiment of the invention, the sensor is connected to a display device for visual visualization of the positional deviation of the permanent magnets embedded in the belt, so that the time of a necessary correction of the belt run can be recognized via this display device. Additionally or alternatively, provision can be made to couple the sensor to a suitably equipped device which, in the event of the permissible center deviation being exceeded, triggers an alarm or immediately stops the conveyor. The measuring length of the magnetic field-detecting sensor expediently corresponds to twice the permissible center deviation of the belt.
In einem Ausfuhrungsbeispiel der Erfindung ist hinsichtlich der Befestigung der Dauermagnete an dem Gurtmatenal vorgesehen, die Dauermagnete unmittelbar in das Gurtmatenal einzulassen .In one exemplary embodiment of the invention, with regard to the attachment of the permanent magnets to the belt material, provision is made for the permanent magnets to be inserted directly into the belt material.
Zu einer vollständigen Überwachung des Forderers kann vorgesehen sein, dem Forderer mehrere magnetfelderkennende Sensoren zuzuordnen, wobei es zweckmäßig sein kann, im Kopfbereich und/oder im Fußbereich des Forderers jeweils einen magnetfelderkennenden Sensor anzuordnen.For complete monitoring of the requestor, it can be provided that the requestor be assigned a plurality of magnetic field-detecting sensors, wherein it may be expedient to arrange a magnetic field-recognizing sensor in the head area and / or in the foot area of the requestor.
In der Zeichnung ist die Erfindung anhand eines im Rahmen eines Becherwerkes eingesetzten Forderers erläutert, und es zeigen • In the drawing the invention is explained on the basis of a frame used in a bucket conveyor Forderers, and show •
Fig. 1 einen in einem Gurtoecnerwerk eingesetzten Forderer in einer Seitenansicht,1 shows a conveyor used in a Gurtoecnerwerk in a side view,
Fig. 2 den Forderer gemäß Figur 1 in einer Vorderansicht ,2 the conveyor according to FIG. 1 in a front view,
Fig. 3 eine ausschnittsweise Vorderansicht auf den Gurt eines Forderers im Bereich der Uberwachungs- einπchtung ,3 shows a partial front view of the belt of a conveyor in the area of the monitoring device,
Fig. 4 den Gegenstand der Figur 3 in einer Seitenansicht . Wie zunächst den Figuren 1 und 2 zu entnehmen ist, umfaßt das Gurtbecherwerk ein Becherwerksgehäuse 10, in welchem zwischen einem Becherwerkskopf 11 und einem Becherwerksfuß 12 ein Gurt 14 in Laufrichtung des Pfeiles 13 umläuft, wobei im Becherwerkskopf 11 eine Antriebstrommel 27 angeordnet ist; auf dem Gurt 14 sind Becher 15 für die Schüttgutförderuπg befestigt.Fig. 4 shows the subject of Figure 3 in a side view. As can first be seen in FIGS. 1 and 2, the belt bucket elevator comprises a bucket elevator housing 10, in which a belt 14 rotates in the direction of the arrow 13 between a bucket elevator head 11 and a bucket elevator foot 12, a drive drum 27 being arranged in the bucket elevator head 11; on the belt 14 cups 15 are attached for bulk material conveyance.
Wie aus Figur 1 ersichtlich, sind in größeren Abständen in das Gurtmaterial des Gurtes 14 Dauermagnete 16 eingelassen, und nahe des Becherwerkskopfes 11 ist ein Sensor 17 angeordnet, der den Vorbeilauf der Dauermagnete 16 erfaßt.As can be seen from FIG. 1, 14 permanent magnets 16 are let into the belt material of the belt, and a sensor 17 is arranged near the bucket elevator head 11, which detects the passing of the permanent magnets 16.
Wie aus Figur 2 ersichtlich, kann der Lauf des Gurtes 14 über eine Verstellung der Spanπachse 18 beeinflußt werden, wobei die Spanπachse 18 durch Verstellung der Spaπnspindeln 19 erfolgt.As can be seen from FIG. 2, the running of the belt 14 can be influenced by adjusting the tensioning axis 18, the tensioning axis 18 being effected by adjusting the tensioning spindles 19.
In den Figuren 3 und 4 ist die Anordnung des Sensors 17 sowie der Dauermagnete 16 deutlicher dargestellt; die Dauermagnete 16 sind in dem Gurt 14 in dessen Längs¬ achse 20 mit Abstand zueinander eingelassen. Der Sensor 17 ist an einer am Becherwerksgehäuse 10 befestigten Haltεrung 23 festgelegt und quer zur Längsachse 20 des Gurtes 14 ausgerichtet; die über die Sensorachse 22 sich erstreckende Meßlänge 21 des Sensors 17 ist dabei so bemessen, daß die Meßlänge 21 dem Doppelten der zulässigen Mittenabweichung des Gurtes 14 bei seinem Lauf entspricht. Wie der Zeichnung ferner zu entnehmen ist, sind die Becher 15 über Befestigungsschrauben 26 in dem Gurtmaterial befestigt. Im einzelnen kann die Meßlänge 21 im Eiπsatzfall den Betriebsförderungeπ angepaßt werden und dabei auch weniger als das Doppelte der zulässigen Mittenabweichung des Gurtes 14 betragen. Beim Lauf des Gurtes 14 in Gurtlaufrichtung 13 laufen die Dauermagnete 16 an dem Sensor 17 vorbei; überquert ein Dauermagnet 16 den Sensor 17, so wird die Lage des Magnetfeldes des Dauermagneten 16 entlang der Sensorachse 22 festgestellt und in ein zur Magnetfeldlage proportionales Sensorausgaπgssignal umgesetzt, wobei bei unterschiedlichen Meßlängen unterschiedlich hohe und einer Mittenabweichuπg des Gurtes quer zur Laufricntung entsprechende Signale erzeugt werden; dieses Sensorausgangssignal wird in einem geeigneten Anzeigegerät, vorzugsweise auf einem Display, optisch sichtbar gemacht, so daß der Gurtlauf über eine Verstellung der Spannspindeln 19 korrigiert werden kann. Eine Integration in ein Überwachungssystem mit einer Alarmierung beziehungsweise Abschaltung des Förderers ist ergänzend möglich.The arrangement of the sensor 17 and the permanent magnets 16 is shown more clearly in FIGS. 3 and 4; the permanent magnets 16 are embedded in the belt 14 in its longitudinal axis 20 at a distance from one another. The sensor 17 is fixed to a bracket 23 fastened to the bucket elevator housing 10 and aligned transversely to the longitudinal axis 20 of the belt 14; the measuring length 21 of the sensor 17 extending over the sensor axis 22 is dimensioned such that the measuring length 21 corresponds to twice the permissible center deviation of the belt 14 when it is running. As can also be seen from the drawing, the cups 15 are fastened in the belt material by means of fastening screws 26. In detail, the measuring length 21 can be adapted to the operational support in the event of use and can also be less than twice the permissible center deviation of the belt 14. When the belt 14 runs in the belt running direction 13, the permanent magnets 16 pass the sensor 17; If a permanent magnet 16 crosses the sensor 17, the position of the magnetic field of the permanent magnet 16 along the sensor axis 22 is ascertained and converted into a sensor output signal proportional to the magnetic field position, signals of different heights and a center deviation of the belt being generated transversely to the running direction; This sensor output signal is made optically visible in a suitable display device, preferably on a display, so that the belt run can be corrected by adjusting the tensioning spindles 19. An integration in a monitoring system with an alarm or switch-off of the conveyor is also possible.
Aus den Figuren 3 und 4 ergibt sich weiterhin die nach der Erfindung vorgesehene Überwachung der Klemmverbindung 24, in welcher die Enden des Gurtes 14 zusammengefaßt sind. Wie aus den Figuren 3 und 4 ohne weiteres ersichtlich, sind in Laufrichtung des Gurtes 13 vor und hinter der Klemmverbindung 24 Dauermagnete 16 in das Gurtmaterial eingelassen, deren über die Längsachse 20 gemessener Abstand 25 als der gewünschten entsprechender Sollwert vorgegeben ist; beim Vorbeilauf der Dauermagnete 16 an dem Sensor 17 entspricht dieser Abstand 25 einer bestimmten Zeit zwischen zwei Ausgangssigπalen des Sensors 17. Läßt die Klemmfuπktion der Klemmverbindung 24 nach und zieht sich infolgedessen der Gurt 14 langsam aus der Klemm¬ verbindung 24 heraus, so wird hierdurch der Abstand 25 zwischen den beiden Dauermagneten 16 größer, und beim Vorbeilauf der Dauermagneten 16 an dem Sensor 17 verlängert sich der Ist-Zeitabstand zwischen denFIGS. 3 and 4 also show the monitoring of the clamp connection 24 provided in accordance with the invention, in which the ends of the belt 14 are combined. As can be seen from FIGS. 3 and 4 without further ado, permanent magnets 16 are inserted into the belt material in the direction of travel of the belt 13 in front of and behind the clamping connection 24, the distance 25 measured over the longitudinal axis 20 of this belt being given as the desired corresponding desired value; When the permanent magnets 16 pass the sensor 17, this distance 25 corresponds to a certain time between two output signals from the sensor 17. If the clamping function of the clamping connection 24 subsides and, as a result, the belt 14 slowly pulls out of the clamping connection 24, the Distance 25 between the two permanent magnets 16 larger, and extended when the permanent magnet 16 passes the sensor 17 the actual time interval between the
Sensorausgaπgssignalen . Überschreitet die Differenz zwischen Ist-Wert und Soll-Wert eine vorgegebene Sicherheitsspanne, wird ein Warnsignal ausgelöst oder aber der Förderer stillgesetzt .Sensor output signals. If the difference between the actual value and the target value exceeds a predetermined safety margin, a warning signal is triggered or the conveyor is stopped.
Analog zu der für die Überwachung der Klemmverbindung beschriebenen Auswertung bestehen weitere Auswertuπgsmög- lichkeiten der von der Überwachuπgseinrichtung mit Dauer¬ magneten und Sensor gelieferten Seπsorausgangssignale im Hinblick auf die Drehzahl der Aπtriebstrommel beziehungsweise Umlenktrommel, eine Gurtlängenveränderung, die Lage der Spannachse oder auch die Gurtbelastung durch das Schüttgut zur Ermittlung des Fördervolumens, wobei als Basis für die vorgenannten Auswertungen jeweils der Zeitabstand zwischen den durch die Magneten 16 verursachten Ausgangssignalen des Sensors 17 dient.Analogous to the evaluation described for the monitoring of the clamping connection, there are further evaluation possibilities of the sensor output signals supplied by the monitoring device with permanent magnets and sensors with regard to the speed of the drive drum or deflection drum, a change in belt length, the position of the tensioning axis or the belt load due to this Bulk material for determining the delivery volume, the time interval between the output signals of the sensor 17 caused by the magnets 16 serving as the basis for the aforementioned evaluations.
Die in der vorstehenden Beschreibung, den Patentansprüchen, der Zusammenfassung und der Zeichnung offenbarten Merkmale des Gegenstandes dieser Unterlagen können einzeln als auch in beliebigen Kombinationen untereinander für die Verwirklichung der Erfindung in ihren verschiedenen Ausführungsformen wesentlich sein. The features of the subject matter of these documents disclosed in the above description, the patent claims, the abstract and the drawing can be essential individually or in any combination with one another for realizing the invention in its various embodiments.

Claims

PatentansprücheClaims
Förderer mit Gurtlauf-Überwachungseinrichtuπg , bei welchem längs der Laufrichtung des Gurtes mit Abstand zueinander Dauermagnete an dem Gurt befestigt und dem Förderer wenigstens ein magnetfelderkennender Sensor zugeordnet ist, dadurch gekennzeichnet, daß jeweils ein Dauermagnet (16) in Gurtlaufrichtuπg (13) vor und hinter einer die Enden des Gurtes (14) zusammenfassenden Klemmverbindung (24) und dieser unmittelbar benachbart angeordnet ist und daß der Sensor (17) mit einer Auswerteeiπheit verbunden ist, in welcher den bei Vorbeilauf der Dauermagnete (16) an dem Sensor (17) von diesem abgegebenen Sensorsignalen Zeit- und/oder Wegdifferenzen zugeordnet und der so ermittelte Ist-Wert einem vorgegebenen Soll-Wert gegenübergestellt wird.Conveyor with belt run monitoring device, in which, along the running direction of the belt, permanent magnets are attached to the belt at a distance from one another and the conveyor is assigned at least one sensor which detects magnetic fields, characterized in that a permanent magnet (16) in each case in the belt run direction (13) in front of and behind one the ends of the belt (14) summarizing the clamping connection (24) and this is arranged immediately adjacent and that the sensor (17) is connected to an evaluation unit in which the permanent magnets (16) pass by the sensor (17) as it passes Time and / or path differences are assigned to sensor signals and the actual value determined in this way is compared with a predetermined target value.
Förderer nach Anspruch 1, dadurch gekennzeichnet, daß die Dauermagnete (16) eine einen großen Abstand zum Sensor zulassende Maqnetfeidstärke aufweisen.Conveyor according to claim 1, characterized in that the permanent magnets (16) have a magnetic field thickness which allows a large distance from the sensor.
Förderer nach Anspruch 1 oder 2 mit einem eine Stahlseilarmieruπg beziehungsweise Textilarmierung aufweisenden Gurt, dadurch gekennzeichnet, daß dieConveyor according to claim 1 or 2 with a belt having a steel cable armature or textile armature, characterized in that the
Dauermagnete (16) in den Längsachsen derPermanent magnets (16) in the longitudinal axes of the
Becher efestiguπg an dem Gurtmaterial beziehungsweise der Befestigung der Klemmverbindung angeordnet sind. 4. Förderer nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß zusätzlich zu den der Klemmverbindung (24) zugeordneten Dauermagneten (16) längs der Laufrichtung (20) des Gurtes (14) mit Abstand zueinander weitere Dauermagnete (16) an dem Gurtmaterial befestigt sind und daß dem Förderer (10) wenigstens ein magnetfelderkennender Sensor (17) mit einer quer zur Laufrichtung der Dauermagnete (20) ausgerichteten Meßlänge (21) zugeordnet ist, wobei bei unterschiedlichen Meßläπgeπ unterschiedlich hohe und einer Mittenabweichung des Gurtes quer zur Laufrichtung entsprechende Signalpegel erzeugt werden.Cup efestiguπg on the belt material or the attachment of the clamp connection are arranged. 4. Conveyor according to one of claims 1 to 3, characterized in that in addition to the permanent magnet (16) associated with the clamping connection (24) along the running direction (20) of the belt (14) at a distance from each other further permanent magnets (16) on the belt material are attached and that the conveyor (10) is assigned at least one magnetic field-detecting sensor (17) with a measuring length (21) oriented transversely to the running direction of the permanent magnets (20), with different measuring lengths and different center levels of the belt corresponding to the signal level corresponding to the running direction be generated.
5. Förderer nach Ansprucn 4, dadurch gekennzeichnet, daß der Sensor (17) mit einem Anzeigegerät zur optischen Sichtbarmachung der Lageabweichung der an αem Gurt (14) befestigten Dauermagnete (16) verbunden ist.5. Conveyor according to Claim 4, characterized in that the sensor (17) is connected to a display device for visual visualization of the positional deviation of the permanent magnets (16) attached to the belt (14).
6. Förderer nach Anspruch 5, dadurch gekennzeichnet, daß die Meßlänge (21) dem DoDpelten der zulässigen Mittenabweichung des Gurtes (14) entspricht.6. Conveyor according to claim 5, characterized in that the measuring length (21) corresponds to the DoDpelten the permissible center deviation of the belt (14).
7. Förderer nach einem der Ansprüche 4 bis 6, dadurch gekennzeichnet, daß der Sensor (17) mit einem bei Überschreitung der zulässigen Mittenabweichung ansprechenden und gegebenenfalls den Förderer (10) abscnaltenden Alarmgerät verbunden ist.7. Conveyor according to one of claims 4 to 6, characterized in that the sensor (17) is connected to an alarm device which responds when the permissible center deviation is exceeded and, if appropriate, disconnects the conveyor (10).
Förderer nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die Dauermagnete (16) in das Gurtmaterial eingelassen sind. 9. Förderer nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß dem Förderer (10) mehrere magnetfelderkennende Sensoren (17) zugeordnet sindConveyor according to one of claims 1 to 7, characterized in that the permanent magnets (16) are embedded in the belt material. 9. Conveyor according to one of claims 1 to 8, characterized in that the conveyor (10) is assigned a plurality of magnetic field-detecting sensors (17)
10. Förderer nach Anspruch 9, dadurch gekennzeichnet, daß im Kopfbereich (11) und/oder im Fußbereich (12) des Gurtförderers (10) ein magnetfelderkennender Sensor angeordnet ist . 10. Conveyor according to claim 9, characterized in that a magnetic field-detecting sensor is arranged in the head region (11) and / or in the foot region (12) of the belt conveyor (10).
PCT/DE1996/000340 1995-02-24 1996-02-22 Conveyor with belt motion monitoring device WO1996026139A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19506421 1995-02-24
DE19506421.6 1995-02-24

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0989079A1 (en) * 1998-09-10 2000-03-29 Bernhard Beumer Maschinenfabrik KG Control system for the (straight) running of an elongate traction means, especially a transport belt
DE20113181U1 (en) 2001-08-08 2002-03-07 Beumer Maschinenfabrik Gmbh & Co. Kg, 59269 Beckum Device for monitoring the (straight or skewed) run of the conveyor belt of a belt bucket elevator
CZ296943B6 (en) * 2001-06-12 2006-07-12 Mostecká Uhelná A.S. Method of monitoring conveyor belts and belt conveyor with a device for monitoring thereof according to this method
DE102017104556A1 (en) 2017-03-06 2018-09-06 AUMUND Fördertechnik GmbH Vertical conveyor with push chain
WO2024194786A1 (en) * 2023-03-17 2024-09-26 Cicsa S.R.L. Conveyor plant with wear detection system and related electromagnetic method

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DE2348549A1 (en) * 1973-09-27 1975-04-03 Hartmann Ag Maschf Conveyor belt safety mechanism - has feeler rollers at belt sides operating stop switch via revolution detectors
DE2539873A1 (en) * 1974-09-12 1976-03-25 Bando Chemical Ind SAFETY DEVICE ON A CONVEYOR BELT
DE2535525A1 (en) * 1975-08-08 1977-02-17 Nippon Konbeya K K Expansion control for steel conveyor bands - has sensors, magnets and control system to generate alarm when expansion takes place

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2348549A1 (en) * 1973-09-27 1975-04-03 Hartmann Ag Maschf Conveyor belt safety mechanism - has feeler rollers at belt sides operating stop switch via revolution detectors
DE2539873A1 (en) * 1974-09-12 1976-03-25 Bando Chemical Ind SAFETY DEVICE ON A CONVEYOR BELT
DE2535525A1 (en) * 1975-08-08 1977-02-17 Nippon Konbeya K K Expansion control for steel conveyor bands - has sensors, magnets and control system to generate alarm when expansion takes place

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0989079A1 (en) * 1998-09-10 2000-03-29 Bernhard Beumer Maschinenfabrik KG Control system for the (straight) running of an elongate traction means, especially a transport belt
CZ296943B6 (en) * 2001-06-12 2006-07-12 Mostecká Uhelná A.S. Method of monitoring conveyor belts and belt conveyor with a device for monitoring thereof according to this method
DE20113181U1 (en) 2001-08-08 2002-03-07 Beumer Maschinenfabrik Gmbh & Co. Kg, 59269 Beckum Device for monitoring the (straight or skewed) run of the conveyor belt of a belt bucket elevator
EP1283182A1 (en) 2001-08-08 2003-02-12 Beumer Maschinenfabrik GmbH & Co. KG Control system for the (straight or oblique) running of a transport belt of a bucket elevator
DE102017104556A1 (en) 2017-03-06 2018-09-06 AUMUND Fördertechnik GmbH Vertical conveyor with push chain
WO2018162347A2 (en) 2017-03-06 2018-09-13 AUMUND Fördertechnik GmbH Vertical conveyor comprising a rigid chain and a chain link, conveying element and delivery device
DE102017104556B4 (en) 2017-03-06 2019-08-08 AUMUND Fördertechnik GmbH Vertical conveyor with push chain and chain link, conveying element and feeder
EP3530593A1 (en) 2017-03-06 2019-08-28 Aumund Fördertechnik GmbH Vertical conveyor with drive chain and chain link, conveyor element and dispensing station
WO2024194786A1 (en) * 2023-03-17 2024-09-26 Cicsa S.R.L. Conveyor plant with wear detection system and related electromagnetic method

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