EP0001229B1 - System for directing conveying devices to a maintenance station - Google Patents

System for directing conveying devices to a maintenance station Download PDF

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Publication number
EP0001229B1
EP0001229B1 EP78100787A EP78100787A EP0001229B1 EP 0001229 B1 EP0001229 B1 EP 0001229B1 EP 78100787 A EP78100787 A EP 78100787A EP 78100787 A EP78100787 A EP 78100787A EP 0001229 B1 EP0001229 B1 EP 0001229B1
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EP
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Prior art keywords
maintenance
servicing
period
scanning
trolleys
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EP78100787A
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German (de)
French (fr)
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EP0001229A1 (en
Inventor
Dieter Ahr
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Siemens AG
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Siemens AG
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B61RAILWAYS
    • B61LGUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L25/00Recording or indicating positions or identities of vehicles or trains or setting of track apparatus
    • B61L25/02Indicating or recording positions or identities of vehicles or trains
    • B61L25/04Indicating or recording train identities

Definitions

  • the invention relates to a method for feeding trolleys running in a route network of profile rails with drive devices fed via current paths of the profile rails to at least one maintenance station inserted into the route network.
  • the trolleys traveling in conveyor systems with such route networks have some parts which, although at greater intervals, must be checked regularly. It is both electrical and mechanical components, such as. B. gear or grinding brushes for supplying electrical energy to the motors. Since the maintenance is carried out during the operation of the conveyor system and the largest number of conveying containers have to remain in the conveyor system in order to cope with the transport tasks involved, serviced trolleys must be returned to the conveyor system immediately. When subsequent delivery of not yet serviced trolleys to the maintenance station arises, the problem arises of differentiating serviced trolleys from those that have not yet been serviced and ensuring that all conveying containers are included in a maintenance phase. This problem could of course be solved with the help of operators and using lists that are oriented, for example, to different container numbers.
  • a storage route for empty containers In a conveyor system known from DE-A-2436376 with a route network formed from profile rails there is a storage route for empty containers; the individual transmitting stations do not have to keep empty containers ready for sending purposes, but can request empty containers from the storage path by actuating corresponding request switches.
  • a destination setting device Arranged at the exit of the storage path is a destination setting device which is controlled by the request, and which brings the adjustable identifiers into a position on the passing vehicle which corresponds to the identifier of the requesting station. After leaving this setting device, the trolley therefore has a destination identifier which allows it to be transported to the requesting station.
  • the trolleys have a serviceable maintenance indicator which represents their maintenance state and in that a scanning and control device is arranged at a location on the route network which is frequently passed by trolleys and which is set at the beginning of a maintenance period in such a way that the scanning and control device passing trolleys are redirected to the maintenance station with a characteristic value of the maintenance mark set in a previous maintenance period, and that after each maintenance the characteristic value of the maintenance mark is changed to determine the maintenance period.
  • trolleys with a specific indicator value of the maintenance indicator are diverted to the maintenance station.
  • the scanning and control device can of course be set or controlled in such a way that only a limited number of trolleys passing through the scanning and control device are deflected at certain time intervals in order not to make the number of trolleys removed from the conveyor system too large.
  • the trolleys that have already been serviced and returned to the route network are distinguished from the trolleys that have not yet been serviced by changing the characteristic value of the scannable maintenance indicator attached to them, and accordingly are not redirected to the maintenance station.
  • all trolleys in the route network accordingly have a characteristic value of the scannable maintenance indicator that designates the previous maintenance period.
  • the scanning and control device is now set or changed so that it deflects trolleys with this characteristic value of the maintenance indicator to the maintenance station, where the maintenance indicator is changed again after the maintenance.
  • the conditions are the same as in the first maintenance phase described.
  • a particular advantage of the conveyor system according to the invention is the simple adaptation to the changing conditions in the successive maintenance periods can be seen by simply re-evaluating the information criterion obtained by scanning the maintenance indicator.
  • the scanning and control device is arranged at a location on the route network which is selected from the point of view that all trolleys of the route network have passed this location in the shortest possible time.
  • the location of the attachment of the scanning and control device will accordingly be at different locations in accordance with the different route network designs.
  • a possible location is, for example, a central connecting line between several sub-lines of the route network;
  • Such a central connecting line is, for example, a vertical connecting line that connects several, mainly horizontal, conveying lines located on each floor of a multi-storey house; each trolley transported from one floor to another must take the route via the vertical connecting line.
  • conveyor systems are also conceivable, which are either highly diversified or in which certain conveying containers only ever travel between very specific locations in the route network, so that no location in the route network can be specified that offers a guarantee that all of the conveying containers are within a reasonable range pass this place in a short time interval.
  • the scanning and control device can also be arranged at two or more correspondingly selected locations of the conveyor system.
  • a collective store is provided in the conveyor system for unloaded trolleys that are not currently being used, this collective store should preferably be provided as a location for the scanning and control device.
  • the attachment of the scanning and control device at this location also offers the advantage that generally unloaded trolleys arrive at the maintenance station, while otherwise loaded trolleys can also reach the maintenance station and the goods to be transshipped there into already serviced trolleys and with appropriate setting of the target setting device of the trolleys to the original destination.
  • a scanning and control device is expediently provided in the area of several, preferably all, collective stores.
  • the scanning of a maintenance indicator by means of the scanning and control device makes it necessary to redirect the trolley to the maintenance station, this redirection need not take place immediately.
  • the redirection can also take place, for example, in such a way that the trolley is directed to another generally permanently manned receiving point and is subjected to a prior visual inspection there.
  • This visual inspection can relate in particular to an operating hours counter which indicates how long the tram has been traveling in the route network since the last maintenance.
  • the trolley is only diverted to the maintenance station when there is a predetermined operating time of the trolley.
  • Such an interposition of a station can be provided in particular if this station is located more centrally than the maintenance station, since this can shorten the time in which the trolleys are unnecessarily removed from the route network.
  • the number of adjustable label values of the maintenance label depends on the length of the maintenance period, taking into account an empirically determined maximum operating time of the tram. If, for example, the maintenance period is relatively long due to the large number of trolleys to be serviced and / or the few daily maintenance hours in relation to the actual operating period of the conveyor system, trolleys that have been serviced at the end of the previous maintenance period would be provided with only two characteristic values of the maintenance identifier and are redirected to the maintenance station at the beginning of the following maintenance period, are serviced again at unnecessarily short intervals.
  • each maintenance period including all trolleys comprises several successive maintenance phases and that the characteristic values of the maintenance indicators and the scanning and control device are set such that in each maintenance phase the during the same maintenance phase of the previous maintenance period, trolleys that have been serviced are diverted to the maintenance station.
  • four different indicator values are provided, for example, two different indicator values can be set within a maintenance period, so that in the subsequent maintenance period the trolleys serviced during the first maintenance phase of the previous maintenance period are first fed to the maintenance station, whereas the trolleys serviced in the second maintenance phase of the previous maintenance period are first delivered be supplied to the maintenance station at the beginning of the second maintenance phase of the current maintenance period.
  • the maintenance period is very short compared to the operating period, a restriction to only two indicator values of the maintenance indicator can advantageously be provided, since the distance between two maintenance operations of each conveyor container is only relatively insignificant compared to that given by the mean interval between the two maintenance periods Average time of the maintenance intervals of each trolley differs.
  • a design of the maintenance indicator that is identical to the design of identification elements of a target setting device of the trolley is to be regarded as preferred, since the scanning and control device or its scanning elements can then be arranged on a common carrier together with scanning elements of a target evaluation device related to the target setting device and thus cheap constructive designs can be achieved.
  • the maintenance indicator can also be designed as a metal plate, which, however, is fixed immovably in a suitably designed receptacle.
  • the simplest form of attaching the scannable maintenance label is to provide an adhesive film on the maintenance label, with which the maintenance label can be attached anywhere on the trolley.
  • the maintenance indicator itself is formed by an adhesive film; the adhesive film can have a metallic or magnetic coating or, with its surface, represent an optically evaluable characteristic.
  • FIG. 1 relates to a conveyor system in which the maintenance period W1, W2 is relatively small compared to the operating period B.
  • the maintenance periods W1, W2 must be set in such a way that the sum of two maintenance periods W1, W2 and an operating period B corresponds to the maximum time period Tmax between two consecutive maintenance of one and the same delivery container.
  • This relationship results from the fact that the trolley, which was the first to be serviced in the maintenance period W1, can possibly only be serviced as the last of all trolleys in the maintenance period W2.
  • the indicator value 0 is changed to the indicator value 1.
  • FIG. 2 illustrates the operating conditions in a conveyor system in which the maintenance periods W1 and W2 are relatively long.
  • the sum of two maintenance periods W1, W2 and an operating period B may at most be equal to the maximum period Tmax between two consecutive maintenance of the same trolley, the resulting operating period B is smaller than each of the two maintenance periods W1 and W2.
  • the characteristic values of the maintenance identifier in the two maintenance periods W1 and W2 and in the operating period B are identical to those of the example shown in FIG. 1.
  • FIG. 3 illustrates the operating conditions that arise when the maintenance periods W1, W2 of FIG. 2 each have two maintenance phases W11, W12; W21, W22 can be divided. It is assumed that the trolleys have the characteristic values 3 and 4 before the maintenance period W1. In the first maintenance phase W11 of the maintenance period W1, only the trolleys which have the characteristic value 3 are redirected to the maintenance station, this characteristic value being changed to the characteristic value 1 after the maintenance. In the second maintenance phase W12, only the trolleys with the characteristic value 4 are diverted to the maintenance station, the characteristic value 4 being changed to '2' after the maintenance. In the following operating period B there are therefore trolleys with the characteristic values 1 or 2 in the conveyor system.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Conveyors (AREA)
  • Train Traffic Observation, Control, And Security (AREA)

Description

Die Erfindung betrifft ein Verfahren zur Zuführung von in einem Streckennetz von Profilschienen laufenden Förderwagen mit über Strombahnen der Profilschienen gespeisten Antriebseinrichtungen zu wenigstens einer in das Streckennetz eingefügten Wartungsstation.The invention relates to a method for feeding trolleys running in a route network of profile rails with drive devices fed via current paths of the profile rails to at least one maintenance station inserted into the route network.

Die in Förderanlagen mit derartigen Streckennetzen fahrenden Förderwagen weisen einige Teile auf, die zwar in größeren Abständen, jedoch regelmäßig überprüft werden müssen. Es handelt sich dabei sowohl um elektrische als auch mechanische Bauteile, wie z. B. Getriebe oder Schleifbürsten zur Zuführung der elektrischen Energie an die Motoren. Da die Wartung während des Betriebs der Förderanlage erfolgt und die größte Zahl der Förderbehälter zur Bewältigung der anfallenden Transportaufgaben in der Förderanlage verbleiben muß, müssen gewartete Förderwagen umgehend in die Förderanlage zurückgeschleust werden. Bei der Nachlieferung von noch nicht gewarteten Förderwagen an die Wartungsstation stellt sich dabei das Problem, gewartete von noch nicht gewarteten Förderwagen zu unterscheiden und sicherzustellen, daß alle Förderbehälter in eine Wartungsphase einbezogen werden. Dieses Problem könnte selbstverständlich mit Hilfe von Bedienungspersonen und anhand von Listen, die beispielsweise an verschiedenen Behälternummern orientiert sind, gelöst werden.The trolleys traveling in conveyor systems with such route networks have some parts which, although at greater intervals, must be checked regularly. It is both electrical and mechanical components, such as. B. gear or grinding brushes for supplying electrical energy to the motors. Since the maintenance is carried out during the operation of the conveyor system and the largest number of conveying containers have to remain in the conveyor system in order to cope with the transport tasks involved, serviced trolleys must be returned to the conveyor system immediately. When subsequent delivery of not yet serviced trolleys to the maintenance station arises, the problem arises of differentiating serviced trolleys from those that have not yet been serviced and ensuring that all conveying containers are included in a maintenance phase. This problem could of course be solved with the help of operators and using lists that are oriented, for example, to different container numbers.

In einer durch die DE-A- 2436376 bekannten Förderanlage mit einem aus Profilschienen gebildeten Streckennetz befindet sich eine Speicherstrecke für leere Behälter; die einzelnen Sendestationen brauchen keine Leerbehälter für Absendezwecke in Bereitstellung zu halten, sondern können durch Betätigen entsprechender Anforderungsschalter leere Behälter von der Speicherstrecke anfordern. Am Ausgang der Speicherstrecke ist eine von dem Anforderungswunsch gesteuerte Zieleinstellvorrichtung angeordnet, die an den vorbeikommenden Wagen die verstellbaren Kennzeichen in eine Lage bringt, die dem Kennzeichen der anfordernden Station entspricht. Der Förderwagen trägt also nach dem Verlassen dieser Einstellvorrichtung eine Zielkennzeichnung, die es gestattet, ihn zu der anfordernden Station zu befördern.In a conveyor system known from DE-A-2436376 with a route network formed from profile rails there is a storage route for empty containers; the individual transmitting stations do not have to keep empty containers ready for sending purposes, but can request empty containers from the storage path by actuating corresponding request switches. Arranged at the exit of the storage path is a destination setting device which is controlled by the request, and which brings the adjustable identifiers into a position on the passing vehicle which corresponds to the identifier of the requesting station. After leaving this setting device, the trolley therefore has a destination identifier which allows it to be transported to the requesting station.

Würde diese Anlagenkonfiguration benutzt, um Förderwagen - die gewartet werden sollen - an eine Wartungsstation zu überführen, müßte eine Anforderung an die Speicherstrecke ergehen, die zum Einstellen des der Wartungsstation entsprechenden Zielkennzeichens an einem oder mehreren Förderwagen mittels der Einstellvorrichtung in der Speicherstrecke führte. Insbesondere in der Anfangsphase eines jeden Wartungszeitraums könnten damit verhältnismäßig viele noch nicht gewartete Förderwagen der Wartungsstation zugeführt werden. Da die Förderwagen aber nach der Wartung wieder in das Streckennetz zurückgeführt werden müssen -da eine Bereitstellung einer ausreichenden Anzahl von Förderwagen auch während des Wartungszeitraums gewährleistet sein muß - würden insbesondere in der Endphase des Wartungszeitraums vorwiegend bereits gewartete Förderwagen erneut der Wartungsstation zugeführt werden, wogegen andere noch nicht gewartete Förderwagen im Streckennetz verblieben. Überflüssige Anforderungen von Förderwagen sollen durch das erfindungsgemäße Verfahren vermieden werden, dem ausgehend von dem eingangs definierten bekannten Verfahren die Aufgabe zugrunde liegt, die Mithilfe von Bedienungspersonal bei der Erfassung aller Förderwagen unnötig zu machen und eine sowohl konstruktiv als auch funktionell möglichst einfache Unterscheidung zwischen gewarteten und noch nicht gewarteten Förderwagen zu realisieren. Dies wird erfindungsgemäß dadurch erreicht, daß die Förderwagen ein ihren Wartungszustand repräsentierendes abtastfähiges Wartungskennzeichen tragen und daß an einem häufig von Förderwagen passierten Ort der Streckennetzes eine Abtast- und Steuereinrichtung angeordnet wird, die zu Beginn eines Wartungszeitraums derart eingestellt wird, daß die Abtast- und Steuereinrichtung passierende Förderwagen mit einem in einem vorhergehenden Wartungszeitraum eingestellten Kennzeichenwert des Wartungskennzeichens zur Wartungsstation umgelenkt werden, sowie daß nach jeder Wartung der Kennzeichenwert des Wartungskennzeichens wartungszeitraumbestimmend geändert wird.If this system configuration were used to transfer trolleys - which are to be serviced - to a maintenance station, a request would have to be made to the storage line, which would result in the setting of the destination identifier corresponding to the maintenance station on one or more trolleys by means of the setting device in the storage line. In the initial phase of each maintenance period in particular, a relatively large number of trolleys that have not yet been serviced could thus be fed to the maintenance station. However, since the trolleys have to be returned to the route network after the maintenance - since a sufficient number of trolleys must also be guaranteed during the maintenance period - especially in the end phase of the maintenance period, predominantly already maintained trolleys would be returned to the maintenance station, whereas others not yet maintained trams remained in the route network. Unnecessary requirements of trolleys are to be avoided by the method according to the invention, which, based on the known method defined at the outset, is based on the task of making the assistance of operating personnel in the detection of all trolleys unnecessary and making a distinction between the serviced and as simple as possible in terms of design and function Realize not yet maintained tram. This is achieved according to the invention in that the trolleys have a serviceable maintenance indicator which represents their maintenance state and in that a scanning and control device is arranged at a location on the route network which is frequently passed by trolleys and which is set at the beginning of a maintenance period in such a way that the scanning and control device passing trolleys are redirected to the maintenance station with a characteristic value of the maintenance mark set in a previous maintenance period, and that after each maintenance the characteristic value of the maintenance mark is changed to determine the maintenance period.

Zu Beginn eines Wartungszeitraums werden also Förderwagen mit einem bestimmten Kennzeichenwert des Wartungskennzeichens zu Wartungsstation umgelenkt. Die Abtast- und Steuereinrichtung kann dabei selbstverständlich so eingestellt oder gesteuert werden, daß in bestimmten Zeitintervallen nur eine begrenzte Anzahl von die Abtast- und Steuereinrichtung passierenden Förderwagen umgelenkt wird, um die Zahl der aus der Förderanlage gleichzeitig entnommenen Förderwagen nicht zu groß werden zu lassen. Die bereits gewarteten und in das Strekkennetz zurückgeschleusten Förderwagen werden durch Änderung des Kennzeichenwertes des an ihnen angebrachten abtastfähigen Wartungskennzeichens von den noch nicht gewarteten Förderwagen unterschieden und demgemäß nicht erneut zur Wartungsstation umgelenkt. Bei Beginn eines neuen Wartungszeitraums weisen demgamäß alle Förderwagen des Streckennetzes einen, den vorhergehenden Wartungszeitraum bezeichnenden Kennzeichenwert des abtastfähigen Wartungskennzeichens auf. Die Abtast- und Steuereinrichtung wird nun so ein- bzw. umgestellt, daß sie Förderwagen mit diesem Kennzeichenwert des Wartungskennzeichens zur Wartungsstation umlenkt, wo nach der Wartung das Wartungskennzeichen erneut geändert wird. Beim dritten Wartungszeitraum liegen dann wieder die gleichen Verhältnisse wie bei der beschriebenen ersten Wartungsphase vor.At the beginning of a maintenance period, trolleys with a specific indicator value of the maintenance indicator are diverted to the maintenance station. The scanning and control device can of course be set or controlled in such a way that only a limited number of trolleys passing through the scanning and control device are deflected at certain time intervals in order not to make the number of trolleys removed from the conveyor system too large. The trolleys that have already been serviced and returned to the route network are distinguished from the trolleys that have not yet been serviced by changing the characteristic value of the scannable maintenance indicator attached to them, and accordingly are not redirected to the maintenance station. At the start of a new maintenance period, all trolleys in the route network accordingly have a characteristic value of the scannable maintenance indicator that designates the previous maintenance period. The scanning and control device is now set or changed so that it deflects trolleys with this characteristic value of the maintenance indicator to the maintenance station, where the maintenance indicator is changed again after the maintenance. In the third maintenance period, the conditions are the same as in the first maintenance phase described.

Ein besonderer Vorteil der erfindungsgemäßen Förderanlage ist dabei in der einfachen Anpassung an die jeweils wechselnden Verhältnisse in den aufeinanderfolgenden Wartungszeiträumen durch einfache Umwertung des aus der Abtastung des Wartungskennzeichens gewonnenen Aussagekriteriums zu sehen.A particular advantage of the conveyor system according to the invention is the simple adaptation to the changing conditions in the successive maintenance periods can be seen by simply re-evaluating the information criterion obtained by scanning the maintenance indicator.

Die Abtast- und Steuereinrichtung wird dabei an einem Ort des Streckennetzes angeordenet, der unter dem Gesichtspunkt ausgewählt wird, daß in möglichst kurzer Zeit alle Förderwagen des Streckennetzes diesen Ort passiert haben. Der Ort der Anbringung der Abtast- und Steuereinrichtung wird demgemäß entsprechend den unterschiedlichen Streckennetzgestaltungen an unterschiedlichen Orten liegen. Ein möglicher Ort ist beispielsweise ein zentraler Verbindungsstrang zwischen mehreren Teilsträngen des Streckennetzes; als ein solch zentraler Verbindungsstrang ist beispielsweise eine vertikale Verbindungsstrecke anzusehen, die mehrere in jeweils einer Etage eines mehrstöckigen Hauses gelegene, vorwiegend horizontale Förderstränge miteinander verbindet; jeder von einer Etage zu einer anderen beförderte Förderwagen muß dabei den Weg über den vertikalen Verbindungsstrang nehmen.The scanning and control device is arranged at a location on the route network which is selected from the point of view that all trolleys of the route network have passed this location in the shortest possible time. The location of the attachment of the scanning and control device will accordingly be at different locations in accordance with the different route network designs. A possible location is, for example, a central connecting line between several sub-lines of the route network; Such a central connecting line is, for example, a vertical connecting line that connects several, mainly horizontal, conveying lines located on each floor of a multi-storey house; each trolley transported from one floor to another must take the route via the vertical connecting line.

Es sind allerdings auch Förderanlagen denkbar, die entweder stark aufgefächert sind oder bei denen bestimmte Förderbehälter immer nur zwischen ganz bestimmten Orten des Streckennetzes verkehren, so daß kein Ort im Strekkennetz festgelegt werden kann, der mit Sicherheit Gewähr dafür bietet, daß sämtliche Förderbehälter innerhalb eines vertretbar kurzen Zeitintervalls diesen Ort passieren. In einem solchen Fall kann die Abtast- und Steuereinrichtung auch an zwei oder mehreren entsprechend ausgewählten Orten der Förderanlage angeordnet werden.However, conveyor systems are also conceivable, which are either highly diversified or in which certain conveying containers only ever travel between very specific locations in the route network, so that no location in the route network can be specified that offers a guarantee that all of the conveying containers are within a reasonable range pass this place in a short time interval. In such a case, the scanning and control device can also be arranged at two or more correspondingly selected locations of the conveyor system.

Sofern in der Förderanlage ein Sammelspeicher für momentan nicht benutzte unbeladene Förderwagen vorgesehen ist, ist dieser Sammelspeicher bevorzugt als Ort für die Abtast- und Steuereinrichtung vorzusehen. Die Anbringung der Abtast- und Steuereinrichtung an diesem Ort bietet zugleich den Vorteil, daß an der Wartungsstation generell unbeladene Förderwagen ankommen, während anderenfalls auch beladene Förderwagen die Wartungsstation erreichen können und das Fördergut dort in bereits gewartete Förderwagen umgeladen und mit entsprechender Einstellung der Zieleinstellvorrichtung der Förderwagen zum ursprünglichen Ziel befördert werden muß. Sofern in der Förderanlage mehrere derartige Sammelspeicher angeordnet sind, wird zweckmäßigerweise im Bereich mehrerer, vorzugsweise aller Sammelspeicher, eine Abtast- und Steuereinrichtung vorgesehen.If a collective store is provided in the conveyor system for unloaded trolleys that are not currently being used, this collective store should preferably be provided as a location for the scanning and control device. The attachment of the scanning and control device at this location also offers the advantage that generally unloaded trolleys arrive at the maintenance station, while otherwise loaded trolleys can also reach the maintenance station and the goods to be transshipped there into already serviced trolleys and with appropriate setting of the target setting device of the trolleys to the original destination. If several such collective stores are arranged in the conveyor system, a scanning and control device is expediently provided in the area of several, preferably all, collective stores.

Sofern die Abtastung eines Wartungskennzeichens mittels der Abtast- und Steuereinrichtung die Umlenkung des Förderwagens zur Wartungsstation erforderlich macht, muß diese Umlenkung nicht unmittelbar erfolgen. Die Umlenkung kann beispielsweise auch so vor sich gehen, daß der Förderwagen zu einer anderen im allgemeinen ständig besetzten Empfangsstelle geleitet wird und dort einer vorherigen Sichtkontrolle unterzogen wird. Diese Sichtkontrolle kann sich insbesondere auf einen Betriebsstundenzähler beziehen, der angibt, wie lange der Förderwagen seit der letzten Wartung im Streckennetz gefahren ist. Der Förderwagen wird nur dann zur Wartungsstation umgelenkt, wenn eine vorbestimmte Betriebszeit des Förderwagens vorliegt. Eine derartige Zwischenschaltung einer Station kann insbesondere dann vorgesehen werden, wenn diese Station zentraler als die Wartungsstation gelegen ist, da damit die Zeit, in der die Förderwagen unnötigerweise dem Streckennetz entnommen sind, verkürzt werden kann.If the scanning of a maintenance indicator by means of the scanning and control device makes it necessary to redirect the trolley to the maintenance station, this redirection need not take place immediately. The redirection can also take place, for example, in such a way that the trolley is directed to another generally permanently manned receiving point and is subjected to a prior visual inspection there. This visual inspection can relate in particular to an operating hours counter which indicates how long the tram has been traveling in the route network since the last maintenance. The trolley is only diverted to the maintenance station when there is a predetermined operating time of the trolley. Such an interposition of a station can be provided in particular if this station is located more centrally than the maintenance station, since this can shorten the time in which the trolleys are unnecessarily removed from the route network.

Die Zahl der einstellbaren Kennzeichenwerte des Wartungskennzeichens richtet sich unter Berücksichtigung einer empirisch ermittelten maximalen Betriebszeit der Förderwagen nach der Länge des Wartungszeitraums. Sofern der Wartungszeitraum beispielsweise wegen der großen Zahl der zu wartenden Förderwagen und/oder der nur wenigen täglichen Wartungsstunden im Verhältnis zum eigentlichen Betriebszeitraum der Förderanlage verhältnismäßig lang ist, würden bei Vorsehen von nur zwei Kennzeichenwerten des Wartungskennzeichens Förderwagen, die am Ende des vorhergehenden Wartungszeitraums gewartet worden sind und am Anfang des. nachfolgenden Wartungszeitraums zur Wartungsstation umgelenkt werden, in unnötig kurzen Abständen erneut gewartet werden.The number of adjustable label values of the maintenance label depends on the length of the maintenance period, taking into account an empirically determined maximum operating time of the tram. If, for example, the maintenance period is relatively long due to the large number of trolleys to be serviced and / or the few daily maintenance hours in relation to the actual operating period of the conveyor system, trolleys that have been serviced at the end of the previous maintenance period would be provided with only two characteristic values of the maintenance identifier and are redirected to the maintenance station at the beginning of the following maintenance period, are serviced again at unnecessarily short intervals.

Um ein unnötig schnelles Aufeinanderfolgen zweier Wartungen am gleichen Förderwagen zu verhindern, ist es als vorteilhaft anzusehen, daß jeder alle Förderwagen einbeziehende Wartungszeitraum mehrere aufeinanderfolgende Wartungsphasen umfaßt und daß die Kennzeichenwerte der Wartungskennzeichen und die Abtast- und Steuereinrichtung derart eingestellt werden, daß in jeder Wartungsphase die in der gleichen Wartungsphase des vorhergehenden Wartungszeitraums gewarteten Förderwagen zur Wartungsstation umgelenkt werden. Bei Vorsehen von vier verschiedenen Kennzeichenwerten können beispielsweise innerhalb eines Wartungszeitraums zwei verschiedene Kennzeichenwerte eingestellt werden, so daß im nachfolgenden Wartungszeitraum zuerst die während der ersten Wartungsphase des vorhergehenden Wartungszeitraums gewarteten Förderwagen der Wartungsstation zugeführt werden, dagegen die in der zweiten Wartungsphase des vorhergehenden Wartungszeitraums gewarteten Förderwagen erst mit Beginn der zweiten Wartungsphase des laufenden Wartungszeitraums der Wartungsstation zugeführt werden. Damit kann eine größere Vergleichmäßigung der zeitlichen Abstände zwischen zwei Wartungen jedes einzelnen der in der Förderanlage verkehrenden Förderwagen erzielt und insbesondere der Betriebszeitraum zwischen zwei Wartungszeiträumen vergrößert werden.In order to prevent an unnecessarily quick succession of two maintenance operations on the same trolley, it is to be regarded as advantageous that each maintenance period including all trolleys comprises several successive maintenance phases and that the characteristic values of the maintenance indicators and the scanning and control device are set such that in each maintenance phase the during the same maintenance phase of the previous maintenance period, trolleys that have been serviced are diverted to the maintenance station. If four different indicator values are provided, for example, two different indicator values can be set within a maintenance period, so that in the subsequent maintenance period the trolleys serviced during the first maintenance phase of the previous maintenance period are first fed to the maintenance station, whereas the trolleys serviced in the second maintenance phase of the previous maintenance period are first delivered be supplied to the maintenance station at the beginning of the second maintenance phase of the current maintenance period. In this way, a greater equalization of the time intervals between two maintenance operations of each of the conveyor vehicles running in the conveyor system can be achieved, and in particular the operating period between two maintenance periods can be increased.

Wenn der Wartungszeitraum gegenüber dem Betriebszeitraum sehr kurz ist, kann vorteilhafterweise eine Beschränkung auf nur zwei Kennzeichenwerte des Wartungskennzeichens vorgesehen werden, da der Abstand zwischen zwei Wartungen jedes Förderbehälters nur verhältnismäßig unwesentlich gegenüber dem durch den mittleren Abstand der beiden Wartungszeiträume gegebenen zeitlichen Mittelwert der Wartungsabstände jedes Förderwagens differiert.If the maintenance period is very short compared to the operating period, a restriction to only two indicator values of the maintenance indicator can advantageously be provided, since the distance between two maintenance operations of each conveyor container is only relatively insignificant compared to that given by the mean interval between the two maintenance periods Average time of the maintenance intervals of each trolley differs.

Für die Wartungskennzeichen besteht eine große Zahl unterschiedlicher Realisierungsmöglichkeiten. Als bevorzugt ist dabei eine mit der Ausbildung von Kennzeichenelementen einer Zieleinstellvorrichtung der Förderwagen identische Ausbildung des Wartungskennzeichens anzusehen, da dann die Abtast- und Steuereinrichtung bzw. deren Abtastelemente zusammen mit Abtastelementen einer auf die Zieleinstellvorrichtung bezogenen Zielauswerteeinrichtung auf einem gemeinsamen Träger angeordnet werden können und damit günstige konstruktive Ausgestaltungen zu erreichen sind.There are a large number of different implementation options for the maintenance indicators. A design of the maintenance indicator that is identical to the design of identification elements of a target setting device of the trolley is to be regarded as preferred, since the scanning and control device or its scanning elements can then be arranged on a common carrier together with scanning elements of a target evaluation device related to the target setting device and thus cheap constructive designs can be achieved.

Stellen beispielsweise die Abtastelemente der Zieleinstellvorrichtung in einer Leiste verschiebbare Metallplättchen dar, die von Näherungsinitiatoren der Zielauswerteeinrichtung ausgewertet werden, so kann das Wartungskennzeichen ebenfalls als Metallplättchen ausgebildet sein, das allerdings unverschiebbar in einer entsprechend ausgestalteten Aufnahme angebracht wird.If, for example, the scanning elements of the target setting device are displaceable metal plates in a bar, which are evaluated by proximity initiators of the target evaluation device, the maintenance indicator can also be designed as a metal plate, which, however, is fixed immovably in a suitably designed receptacle.

Die einfachste Form der Anbringung des abtastfähigen Wartungskennzeichens besteht im Vorsehen einer Klebefolie am Wartungskennzeichen, womit das Wartungskennzeichen an beliebiger Stelle am Förderwagen befestigt werden kann.The simplest form of attaching the scannable maintenance label is to provide an adhesive film on the maintenance label, with which the maintenance label can be attached anywhere on the trolley.

In Weiterbildung dieser Befestigungsmöglichkeit ist vorgesehen, daß das Wartungskennzeichen selbst durch eine Klebefolie gebildet ist; die Klebefolie kann dabei metallisch oder magnetisch beschichtet sein oder mit ihrer Oberfläche ein optisch auswertbares Kennzeichen darstellen.In a further development of this fastening option, it is provided that the maintenance indicator itself is formed by an adhesive film; the adhesive film can have a metallic or magnetic coating or, with its surface, represent an optically evaluable characteristic.

Die Erfindung wird im folgenden anhand von 3 Figuren erläutert.The invention is explained below with reference to 3 figures.

Die Figur 1 bezieht sich dabei auf eine Förderanlage, in der der Wartungszeitraum W1, W2 gegenüber dem Betriebszeitraum B verhältnismäßig klein ist. Die Wartungszeiträume W1, W2 müssen so gelegt werden, daß die Summe von zwei Wartungszeiträumen W1, W2 und einem Betriebszeitraum B der maximalen Zeitdauer Tmax zwischen zwei aufeinanderfolgenden Wartungen ein und desselben Förderbehälters entspricht. Diese Beziehung ergibt sich daraus, daß der in dem Wartungszeitraum W1 als erster gewartete Förderwagen im Wartungszeitraum W2 unter Umständen erst als letzter aller Förderwagen gewartet werden kann. Im vorliegenden Beispiel ist davon ausgegangen, daß vor dem Wartungszeitraum W1 alle Förderwagen den Kennzeichenwert 1 tragen und daß dieser während des Wartungszeitraums W1 in den Kennzeichenwert 0 geändert wird, der während des gesamten Betriebszeitraums B vorliegt. Im Wartungszeitraum W2 wird der Kennzeichenwert 0 in den Kennzeichenwert 1 geändert.FIG. 1 relates to a conveyor system in which the maintenance period W1, W2 is relatively small compared to the operating period B. The maintenance periods W1, W2 must be set in such a way that the sum of two maintenance periods W1, W2 and an operating period B corresponds to the maximum time period Tmax between two consecutive maintenance of one and the same delivery container. This relationship results from the fact that the trolley, which was the first to be serviced in the maintenance period W1, can possibly only be serviced as the last of all trolleys in the maintenance period W2. In the present example, it is assumed that all the trolleys have the indicator value 1 before the maintenance period W1 and that this is changed to the indicator value 0 during the maintenance period W1, which is present during the entire operating period B. In the maintenance period W2, the indicator value 0 is changed to the indicator value 1.

Die Figur 2 veranschaulicht die Betriebsverhältnisse in einer Förderanlage, in der die Wartungszeiträume W1 und W2 verhältnismäßig groß sind. Um auch hier der Bedingung zu genügen, daß die Summe zweier Wartungszeiträume W1, W2 und eines Betriebszeitraums B höchstens gleich der maximalen Zeitdauer Tmax zwischen zwei aufeinanderfolgenden Wartungen des gleichen Förderwagens sein darf, ist der sich daraus ergebende Betriebszeitraum B kleiner als jeder der beiden Wartungszeiträume W1 und W2. Die Kennzeichenwerte des Wartungskennzeichens sind in den beiden Wartungszeiträumen W1 und W2 und im Betriebszeitraum B identisch mit denen des in der Figur 1 dargestellten Beispiels.FIG. 2 illustrates the operating conditions in a conveyor system in which the maintenance periods W1 and W2 are relatively long. In order to meet the condition here that the sum of two maintenance periods W1, W2 and an operating period B may at most be equal to the maximum period Tmax between two consecutive maintenance of the same trolley, the resulting operating period B is smaller than each of the two maintenance periods W1 and W2. The characteristic values of the maintenance identifier in the two maintenance periods W1 and W2 and in the operating period B are identical to those of the example shown in FIG. 1.

In der Figur 3 sind die Betriebsverhältnisse veranschaulicht, die sich ergeben, wenn die Wartungszeiträume W1, W2 der Figur 2 in jeweils zwei Wartungsphasen W11, W12; W21, W22 unterteilt werden. Es wird dabei angekommen, daß vor dem Wartungszeitraum W1 die Förderwagen die Kennzeichenwerte 3 und 4 tragen. In der ersten Wartungsphase W11 des Wartungszeitraums W1 werden nur die Förderwagen zur Wartungsstation umgelenkt, die den Kennzeichenwert 3 tragen, wobei dieser Kennzeichenwert nach der Wartung in den Kennzeichenwert 1 geändert wird. In der zweiten Wartungsphase W12 werden nur die Förderwagen mit dem Kennzeichenwert 4 zur Wartungsstation umgelenkt, wobei nach der Wartung der Kennzeichenwert 4 in '2' geändert wird. In dem nachfolgenden Betriebszeitraum B befinden sich also Förderwagen mit den Kennzeichenwerten 1 order 2 in der Förderanlage. In dem nachfolgenden Wartungszeitraum W2 werden zunächst nur die Förderwagen mit dem Kennzeichenwert 1 zur Wartungsstation umgelenkt und dort nach beendeter Wartung mit dem Kennzeichenwert 3 versehen; in der zweiten Wartungsphase W22 erfolgt dementsprechend die Wartung der Förderwagen mit dem Kennzeichenwert 2 und die Änderung des Kennzeichenwertes 2 in '4', womit wieder die gleichen Betriebsverhältnisse wie vor dem Wartungszeitraum W1 in der Anlage bestehen.FIG. 3 illustrates the operating conditions that arise when the maintenance periods W1, W2 of FIG. 2 each have two maintenance phases W11, W12; W21, W22 can be divided. It is assumed that the trolleys have the characteristic values 3 and 4 before the maintenance period W1. In the first maintenance phase W11 of the maintenance period W1, only the trolleys which have the characteristic value 3 are redirected to the maintenance station, this characteristic value being changed to the characteristic value 1 after the maintenance. In the second maintenance phase W12, only the trolleys with the characteristic value 4 are diverted to the maintenance station, the characteristic value 4 being changed to '2' after the maintenance. In the following operating period B there are therefore trolleys with the characteristic values 1 or 2 in the conveyor system. In the subsequent maintenance period W2, only the trolleys with the indicator value 1 are first diverted to the maintenance station and there are provided with the indicator value 3 after the maintenance has ended; In the second maintenance phase W22, the maintenance of the trolleys with the indicator value 2 and the change of the indicator value 2 to '4' takes place accordingly, which means that the same operating conditions as before the maintenance period W1 exist in the system.

Wie einem Vergleich der Figur 2 und 3 entnommen werden kann, ist trotz Einhaltung der maximalen Zeitdauer zwischen zwei aufeinanderfolgenden Wartungen desselben Förderwagens der Betriebszeitraum B zwischen zwei Wartungszeiträumen W1, W2 größer geworden, d. h., daß die Wartung in größeren Abständen als in der Förderanlage gemäß Figur 2 stattfinden kann.As can be seen from a comparison of FIGS. 2 and 3, the operating period B between two maintenance periods W1, W2 has increased in spite of maintaining the maximum time period between two successive maintenance of the same trolley, i. That is, the maintenance can take place at greater intervals than in the conveyor system according to Figure 2.

Claims (4)

1. A process for conducting conveyors which run on a network of rails and which comprise drive devices fed by current paths of the rails at at least one servicing station which is provided in the network, characterised in that the conveyors bear a scannable servicing characteristic which is representative of their servicing state and that a scanning and control device is arranged at a location of the network frequently passed by conveyors, which scanning and control device is set up at the beginning of a servicing period (W2) in such manner that those conveyors which pass the scanning and control device with a characteristic value of the servicing characteristic set in a preceding servicing period (W1) are diverted to the servicing station, and following each servicing the characteristic value of the servicing characteristic is modified so as to determine the servicing period.
2. A process as claimed in claim 1, characterised in that the scanning and control device is arranged in the region of a collective store for unloaded conveyors which are not currently in use.
3. A process as claimed in claim 1 or 2, characterised in that each servicing period (W1, W2) which includes all the conveyors comprises a plurality of consecutive servicing phases (W11, W12; W21, W22) and that the characteristic values of the servicing characteristics and the scanning and control device are set in such manner that in each servicing phase (W21, W22) the conveyors which have been serviced in the same servicing phase (W11, W12) of the previous servicing period (W1) are diverted to the servicing station.
4. A process as claimed in any one of claims 1 to 3, characterised in that the servicing characteristic is provided with the same format as characteristic elements of a device for adjusting the destination of the conveyors.
EP78100787A 1977-09-28 1978-08-30 System for directing conveying devices to a maintenance station Expired EP0001229B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2744072 1977-09-28
DE2744072A DE2744072B1 (en) 1977-09-28 1977-09-28 Conveyor system with a maintenance station

Publications (2)

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EP0001229A1 EP0001229A1 (en) 1979-04-04
EP0001229B1 true EP0001229B1 (en) 1981-10-21

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US (1) US4262599A (en)
EP (1) EP0001229B1 (en)
JP (1) JPS5457708A (en)
AT (1) AT361847B (en)
DE (2) DE2744072B1 (en)

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Publication number Priority date Publication date Assignee Title
DE3022130C2 (en) * 1980-06-10 1983-11-10 Siemens AG, 1000 Berlin und 8000 München Target setting device for adjusting target identifiers of containers
DE3243914A1 (en) * 1982-11-25 1984-05-30 Siemens AG, 1000 Berlin und 8000 München CHASSIS OF A CONVEYOR TROLLEY RUNNING ON PROFILE RAILS
EP0339295A1 (en) * 1988-04-14 1989-11-02 Maschinenfabrik Rieter Ag Transport system to overcome level differences
GB9203223D0 (en) * 1992-02-14 1992-04-01 Gec Alsthom Ltd Baggage handling system
ES2153751B1 (en) * 1998-09-21 2001-08-01 Gomez Gines Sanchez AUTOMATIC WAREHOUSE.

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US3075653A (en) * 1958-12-12 1963-01-29 Maico Electronics Inc Apparatus for and method of identifying material units
FR1252113A (en) * 1959-12-15 1961-01-27 Ass Ouvriers Instr Precision Improvements at the command of carriers
FR1389245A (en) * 1964-03-28 1965-02-12 Translift G M B H Fuer Buerora Automatic mail transport installation in buildings
DE1811650A1 (en) * 1968-11-29 1970-06-11 Standard Elek K Lorenz Ag Transport container with adjustable target indicator
GB1240404A (en) * 1969-02-12 1971-07-21 Scholten Honig Res N V Textile printing pastes
DE1911596B2 (en) * 1969-03-07 1970-11-26
DE2141189A1 (en) * 1971-08-17 1973-03-01 Standard Elektrik Lorenz Ag ADJUSTMENT DEVICE FOR A CONVEYOR SYSTEM
US3812786A (en) * 1972-04-18 1974-05-28 R Cahn Conveyor apparatus
US3796163A (en) * 1972-07-12 1974-03-12 Kearney & Trecker Corp Manufacturing system
DE2436376A1 (en) * 1974-07-27 1976-02-05 Ritter Gmbh & Co Foerder Und A REMOTE ADJUSTMENT DEVICE FOR CONTAINERS ON A TRACK
US4056063A (en) * 1974-07-27 1977-11-01 Buro Patent Ag Dispatcher for conveyor system

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DE2744072A1 (en) 1979-03-29
ATA583878A (en) 1980-08-15
DE2744072B1 (en) 1979-04-26
EP0001229A1 (en) 1979-04-04
JPS5457708A (en) 1979-05-09
DE2861200D1 (en) 1981-12-24
US4262599A (en) 1981-04-21
AT361847B (en) 1981-04-10

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