EP2895420B1 - Operating method for a system of lifting platforms - Google Patents

Operating method for a system of lifting platforms Download PDF

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Publication number
EP2895420B1
EP2895420B1 EP13756913.3A EP13756913A EP2895420B1 EP 2895420 B1 EP2895420 B1 EP 2895420B1 EP 13756913 A EP13756913 A EP 13756913A EP 2895420 B1 EP2895420 B1 EP 2895420B1
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EP
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Prior art keywords
lifting platform
standby mode
platform system
column
lifting
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German (de)
French (fr)
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EP2895420A1 (en
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Josef Femböck
Gerhard Finkbeiner
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/46—Combinations of several jacks with means for interrelating lifting or lowering movements

Definitions

  • the invention relates to a method for operating a lifting platform system for lifting loads, vehicles or the like.
  • a mobile lifting device which is also referred to as a single column lift.
  • a lifting device comprises a mobile base frame with a lifting column arranged thereon, in which a carrier with a load receiving means arranged thereon is guided movable up and down.
  • a lifting unit is provided which comprises at least one control unit and a hydraulic cylinder to move the load-receiving means up and down.
  • the base frame has three support points outside the load receiving area.
  • the patent US 6,634,461 describes a lift system comprising a plurality of single-column lifts.
  • each of the single-column hoists is positioned by its mobile base frame and attached to one of the vehicle wheels so that each wheel rests on the corresponding load-handling means of the single-column lift assigned to it.
  • the control units of the single unit elevators are wirelessly connected and can perform uniform movements in a synchronized mode of operation.
  • Such an arrangement has the disadvantage that the maximum number of lifting platform systems that can be operated simultaneously in a workshop is limited by the frequency range, which is usually regulated by law, of the wireless network provided for wireless communication. Due to an existing radio link between the single-column lifts of each lift system, several such systems can only operate in parallel, provided that their set frequencies are mutually different. Due to the mostly predetermined and limited in the number of channels channel grid of the radio technology used, the user's options are so far however immanently limited to a fixed number of channels, which therefore also limits the number of communicating on these channels lift systems within the radio range.
  • the invention is therefore an object of the invention to provide a lift system, which allows the trouble-free operation of a large number of lift systems on a limited footprint.
  • a lifting device in which the lifting platform system is set to a stand-by mode after the single-column lifting platforms have been configured or after an actuating operation for lifting or lowering the load receptacles of the single-column lifting platforms is activated, in which the receiver of each control unit is activated and the transmitter of each control unit is disabled.
  • a preferred embodiment of the invention provides that in the standby mode, a user-independent, preferably periodic, examination of the set radio channel on any radio traffic another active platform system takes place, with a positive test result, ie a determination of another active lifting system, which is in the checking phase Suspended lift system in a passive operating mode until the detected radio traffic is completed.
  • This passive mode of operation in which the radio traffic of the active lift system can receive, but no own radio signals are emitted, excludes a failure of the active lift system and ensures that at most one lift system of several lifting systems within a footprint covered by the radio range works ,
  • a check is made whether the set radio channel is occupied by other radio traffic or is available for the control of the lifting platform system belonging to single-column lifts.
  • a query for a possible operation is started in order to avoid a collision of radio signals with another active lift system. This ensures a reservation of the set radio channel for the lifting platform system, which thus can use the channel until the conclusion of the activity exclusively for the communication of his assigned single-column lifts.
  • the system preferably enters an active operating mode and carries out the lifting or lowering of the load pick-up.
  • the standby mode is maintained, that is, a Activation of the single-column lifts of the lift system is omitted.
  • a further embodiment of the invention provides that, in the event of actuation of the wake-up button when the radio channel is occupied, a free radio channel is sought to which the lift system adjusts its receiver in case of success and takes him as the current channel. This variant has the advantage that both lift systems can be operated simultaneously on different channels at the same time, without hindering each other in the radio traffic.
  • the search for free radio channels is limited to radio channels of a given frequency band. In this way, the interoperability of the individual stages of a system is ensured, while at the same time any allocations of the legislator with regard to the available frequency ranges can be met.
  • an advantageous embodiment of the invention provides a decentralized operating device for the configuration and / or the control of the individual single-column lifting platforms of the lifting platform system.
  • This remote control unit is defined as the master for the single-column lifts configured for a lift system, with the single-column lifts acting as slaves themselves.
  • a master can control several lifting platform systems or be provided for each lifting platform a master as a separate control unit.
  • a single-column lift of the lift system can be defined or programmed as a master, so that the other integrated single-column lifts are defined as slaves within the lift system.
  • FIG. 1 is a perspective view of a mobile single column lift 11 shown in a rest position.
  • a single-column lifting platform 11 comprises a mobile base frame 12 with a lifting column 13 arranged thereon, in which a carrier 14 with a load-receiving means 15 arranged thereon is guided movable up and down.
  • a lifting unit 16 is provided which comprises at least one control unit and a hydraulic cylinder to move the load receiving means 15 up and down.
  • the base frame 12 has three support points outside the load receiving area.
  • Such a single column lift is from the DE 10 2012 106 073.6 known, to which reference is made in full.
  • further single-column lifting platforms 11 which comprise at least one base frame 12, a load receiver 16 and a lifting unit 16.
  • FIG. 2 shows the use of a lift system 19, which includes, for example, four single-column lifts 11, in an upper Hubendlage, such as for the purpose of wheel replacement and repair and / or maintenance activities.
  • a lift system 19 which includes, for example, four single-column lifts 11, in an upper Hubendlage, such as for the purpose of wheel replacement and repair and / or maintenance activities.
  • the vehicle 18 has already been brought to a working height by means of a uniform lifting movement of the wirelessly operating control units of the single-column lifting platforms 11.
  • FIG. 3 an arrangement of three lift systems 19, 20, 21 is shown, for example, each having a different number of one-column lifts 11.
  • a first lift system 19 has been configured to include four single column lifts to lift, for example, a biaxial vehicle 18. Eight other single-column lifts 11 form a second lift system 20, which may serve to raise and lower a four-axle truck. Finally, six single-column lifts 11 are combined to form a third lifting platform system 21, which is provided for example for a three-axle bus. Further individual unit lifts 11, which are not currently integrated in lifting platform systems and are identified by the numeral 28, are available to workshop personnel for future use.
  • the lift systems 19, 20 and 21 are located in a footprint 29 or footprint of, for example, a workshop, repair shop or warehouse.
  • the contact area 39 has a frequency band which comprises at least one frequency channel. Preferably, several channels are provided within a frequency band. The selection of the number of individual unit elevators 11 to a lift system 11 and the number of lift systems 11 within the footprint 39 is dependent on the activities to be performed and can be adjusted as desired.
  • one of the single column lifts 11 occupies the role of the master 22.
  • the rest of the one-column lifts 11 of the first lift system 19 has been assigned the role of slaves 23 in the context of its configuration.
  • the role of the master 22 can be accomplished by preprogramming the single column lift 11 as such, that is, in the configuration of the system, such a single column lift 11 as master 22 is always associated with other single column lifts 11 in the role of slaves 23.
  • all single-column lifting platforms 11 are identical in construction and are configured to form a lifting platform system 19.
  • actuating a button of the one-column lift 11, in the configuration of the lift system 11, the latter is assigned the role of the master 22, and the others will automatically assume the role of the slave 23.
  • this can also be done by a single input to the respective control unit of the single-column lifting platforms 11 in order to define or program these single-column lifting platforms 11 as master 22.
  • the single column elevators 11 may all be programmed as slave 23 and one or more remote control units may be available to form the master.
  • these four single-column lifts 11 also programmed as a slave 23 and decentralized thereto - ie physically and spatially separated - be provided to one of the one-column lifts 11, a control unit which forms the master 23.
  • Such an arrangement can also be used for the others in FIG. 3 illustrated lift systems 20, 21 may be provided.
  • a mixture of the systems described above within the footprint 39 can be used.
  • single-column lifts As master 24, 26 or slaves 25, 27 set in a reconfiguration.
  • the other single-column lifts 28 are in an idle or standby mode, but can, if necessary by the workshop staff already configured lift systems 19, 20, 21 or serve for additional lift systems.
  • FIG. 4 shows a flowchart of a lift system 19 according to the invention.
  • standby mode 29 also known as standby mode, standby mode or waiting operation of the lift system 19 with their single-column lifts 11 in which the lift system 19 is disabled, but can be activated at any time and without preparations or longer waiting times.
  • FIG. 5 is shown in more detail, is also referred to as idle loss energy demand of the lift system 19 to a minimum required for the detection of a possible change in status minimum.
  • a particular advantage of the described standby mode 29 with respect to a more extended sleep mode, active mode or complete shutdown of the lift system 19 can be seen in the fact that volatile settings data, concerning the current system configuration, held without more expensive technical solutions or semi-permanent storage in the main memory can be.
  • the standby mode 29 prolongs the life of sensitive electrical and electronic components of the single unit elevators by completely avoiding a burdensome inrush current, such as would occur when the unit is completely turned off.
  • the standby mode 29 makes it possible to realize a considerable power saving since central components of the single-column lifting platforms 11 belonging to the system, such as their hydraulic control or radio transmitter, are deactivated in the standby mode 29.
  • the reduction in power consumption achieved during the use-free phase also extends the time span in which the individual single-column lifting platforms 11 can be operated independently of the mains in view of the limited capacity of the accumulators installed therein.
  • this standby mode 29 of the lifting platform system 19 its activity is limited to checking the status of the system by means of cyclic queries, in accordance with the method known in computer science as polling.
  • An approximately by means of a SLEEP or HALT command in the standby state offset microprocessor of the control unit is thereby reactivated after a predetermined sampling interval 30, typically in the millisecond to seconds range.
  • the control unit When pressing a wake-up button in the control panel of the control unit, the control unit performs a query 31 and checks the current radio channel for radio communication. Should the control unit detect a different occupancy of the set radio channel within the scope of this test 32, the lifting platform system 19 remains in the idle state for the time being.
  • a channel is considered to be received when a carrier signal corresponding to the nominal frequency of the channel, also known as carrier, is received.
  • the control unit preferably displays this circumstance to the workshop personnel via the control panel, so that the current user is informed about the temporary blocking of the radio channel and can repeat the request - usually after a short waiting time - by pressing the wake-up key again.
  • a separate wake-up button may be provided as a control button.
  • the wake-up key is preferably combined with another function key provided on the control unit, that is, for the user, for example, a button for raising and lowering is available, but when pressing this key "raise” or “lower” simultaneously the wake-up button or an alarm function is activated in the control of the control unit.
  • the wake-up button is not physically present, but integrated or executed as a program step, so that when pressing the function key not directly on the function key shown function is started.
  • the control unit directs the lifting platform system 19 from the standby mode 29 an active mode 34 via.
  • this state change can be output in the display of the control unit.
  • the useful function of the lifting platform system 19, which consists in lifting and lowering the load-receiving means 15 of the associated one-column lifting platforms 11, is fully available.
  • the radio transmitters of the single-column lifting platforms 11 associated with the system are activated.
  • control unit of the master 22, 24, 26 of the lift systems 19, 20, 21 during their standby mode 29 determines that the wake-up button is not currently depressed during their scan cycle, it will still take a user-independent check 35 of the current radio channel for radio traffic in front. If this results in no other lifting platform system 19, 20, 21 currently using the adjusted channel for coordinating its single-column lifting platforms 11, the control unit of the respective master 22, 24, 26 maintains the standby mode 29.
  • the control unit of the master 22, 24, 26 of the lifting platform system 19, 20, 21 initiates a state transition from the standby mode 29 into a passive operating mode 36.
  • This status change is given by the control unit to the workshop personnel by a corresponding display (for example: "Channel Even in this passive mode of operation 36, the transmitters of the lift system 19, 20, 21 remain in the inactive state, however, the radio traffic is continuously received by the other active lift system in order to detect an end of its activity If this is the case, the respective control unit of the master transfers the respective lifting platform system 19, 20, 21 from the passive operating mode 36 back to the standby mode 29. This change of state is shown in the display of the control unit.
  • FIG. 6 is a modified program schedule to FIG. 4 described flowchart for the lift system 19, 20, 21 shown.
  • This differs in its reaction to a possible assignment of the set radio channel while holding the wake-up button.
  • a maintenance of the standby mode 29 of the lift system provided with appropriate feedback to the user and can only be activated when the other lift system has completed its lifting or lowering
  • the present embodiment allows a more flexible response to its request for commissioning.
  • This reaction consists in an independent channel change 37 of the lift system 19, 20, 21 on a still available channel of a frequency range, which is approved for the footprint 39 and released.
  • the channel is first incremented according to a fixed, usually cyclic search scheme.
  • the candidate radio channels are sorted in ascending order according to their frequency range and numbered consecutively.
  • the channel allocation depends largely on given boundary conditions such as the limitation of the available frequency band by the legislative, the transmission rate to be achieved as well as the probability of possible interference phenomena.
  • achieving a transmission rate of 50 kbit / s requires a bandwidth of approx. 100 kHz and a corresponding channel spacing of about 200 kHz.
  • Such rasterization results in a number of nine available radio channels.
  • Such applications are referred to in the radio as Short Range Devices (SRD), as they allow typical ranges between 0.5 and 2 km, and use a common area known as ISM band, as he also medical devices, cordless thermometers, cordless headphones and mobile speedometers.
  • SRD Short Range Devices
  • the control unit makes a channel change 37 to the next higher channel number, and exceeding the highest channel number causes the control unit to continue the search at the lowest channel number. Since the control units of all single-column lifts 11 of the lifting platform system 19, 20, 21 apply the same search scheme, the channel change 37 is synchronized within the respective lift system 19, 20, 21, so that the radio connection between the control units of the single unit elevators 11 of the respective lift system 19, 20th , 21 does not break off, but essentially continues to exist.
  • this channel is also examined with regard to other radio communications, the above procedure being repeated accordingly. As a rule, the control units continue this channel search until a still free radio channel is encountered. The control units then initiate a transition from the standby mode 29 to the active operating mode 34, the transmitters and receivers of all single-column lifts 11 of the respective lift system 19, 20, 21 being operated on the found free radio channel.
  • FIG. 7 shows a time sequence of the operating modes described in an alternate operation of several lift systems according to one of the figures shown on a given radio channel, where n symbolizes the total number of set on this channel lift systems 19, 20, 21.
  • the lifting platform systems 19, 20, 21 referred to as sets in this context are numbered consecutively, with sets in standby mode 29 being shown schematically as hatched rectangles.
  • Sets in passive mode of operation 36 are shown as neutral rectangles, while those in active mode 34 are highlighted by their strong edges.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Forklifts And Lifting Vehicles (AREA)

Description

Die Erfindung betrifft ein Verfahren zum Betrieb eines Hebebühnensystems zum Heben von Lasten, Fahrzeugen oder dergleichen.The invention relates to a method for operating a lifting platform system for lifting loads, vehicles or the like.

Aus der WO 2010/112200 ist eine mobile Hebevorrichtung bekannt, die auch als Einsäulenhebebühne bezeichnet wird. Eine solche Hebevorrichtung umfasst ein mobiles Grundgestell mit einer daran angeordneten Hubsäule, in welcher ein Träger mit einem darauf angeordneten Lastaufnahmemittel auf und ab bewegbar geführt wird. Zum Heben und Senken ist eine Hubeinheit vorgesehen, die zumindest eine Steuereinheit und einen Hydraulikzylinder umfasst, um das Lastaufnahmemittel auf und ab zu bewegen. Zur Gewährleistung der Stabilität im mobilen Einsatz weist das Grundgestell drei Abstützpunkte außerhalb des Lastaufnahmebereichs auf.From the WO 2010/112200 a mobile lifting device is known, which is also referred to as a single column lift. Such a lifting device comprises a mobile base frame with a lifting column arranged thereon, in which a carrier with a load receiving means arranged thereon is guided movable up and down. For lifting and lowering a lifting unit is provided which comprises at least one control unit and a hydraulic cylinder to move the load-receiving means up and down. To ensure stability in mobile use, the base frame has three support points outside the load receiving area.

Das Patent US 6,634,461 beschreibt ein Hebebühnensystem, welches eine Mehrzahl von Einsäulenhebebühnen umfasst. Um ein mehradriges Fahrzeug etwa zum Zwecke der Wartung oder Reparatur kraft eines solchen Systems gleichmäßig anzuheben, wird jede der Einsäulenhebebühnen mittels ihres mobilen Grundgestells positioniert und an eines der Fahrzeugräder angesetzt, so dass jedes Rad auf dem entsprechenden Lastaufnahmemittel der ihm zugeordneten Einsäulenhebebühne ruht. Dabei sind die Steuereinheiten der einzelnen Einsäulenhebebühnen drahtlos verbunden und können in einem synchronisierten Betriebsmodus gleichförmige Bewegungen ausführen. In diesem Modus ist lediglich eine Einsäulenhebebühne des Hebebühnensystems unmittelbar vom Benutzer zu steuern, während die übrigen Einsäulenhebebühnen durch die benutzergesteuerte Einsäulenhebebühne in einer koordinierten Bewegung synchron angesteuert werden. Ein solcher hierarchischer Aufbau der gemeinsamen Benutzersteuerung ist auf dem Gebiet der Steuerungstechnik als Master-Slave-Architektur bekannt.The patent US 6,634,461 describes a lift system comprising a plurality of single-column lifts. In order to raise a multi-wheeled vehicle uniformly for the purpose of maintenance or repair by virtue of such a system, each of the single-column hoists is positioned by its mobile base frame and attached to one of the vehicle wheels so that each wheel rests on the corresponding load-handling means of the single-column lift assigned to it. The control units of the single unit elevators are wirelessly connected and can perform uniform movements in a synchronized mode of operation. In this mode, only one single column lift of the lift system is to be controlled directly by the user, while the other one-column lifts are controlled synchronously in a coordinated movement by the user-controlled Einsäulenhebebühne. Such a hierarchical structure of the common user control is known in the field of control technology as a master-slave architecture.

Das Patent US 7,219,770 B2 beschreibt eine Weiterentwicklung dieses Hebebühnensystems, das eine Einstellung der für die drahtlose Verbindung zwischen den Einsäulenhebebühnen vorgesehenen Frequenz durch den Benutzer ermöglicht. Auf diese Weise wird der Betrieb mehrerer baugleicher Systeme in unmittelbarer räumlicher Nähe ermöglicht, indem für jedes Hebebühnensystem eine eigene Frequenz eingestellt wird, ohne dass diese sich aufgrund von Signalinterferenz gegenseitig in ihrer Koordination behindern.The patent US Pat. No. 7,219,770 B2 describes a further development of this Lifting system, which allows the user to set the frequency intended for the wireless connection between the single-column lifts. In this way, the operation of multiple identical systems in the immediate vicinity is made possible by a separate frequency is set for each lift system without these interfere with each other due to signal interference in their coordination.

Eine solche Anordnung weist den Nachteil auf, dass die maximale Anzahl der in einer Werkstatt gleichzeitig betreibbaren Hebebühnensysteme durch den - zumeist gesetzlich regulierten - Frequenzbereich des für die Drahtloskommunikation vorgesehenen Funknetzwerks begrenzt werden. Aufgrund einer bestehenden Funkverbindung zwischen den Einsäulenhebebühnen eines jeden Hebebühnensystems lassen sich mehrere solcher Systeme nur parallel in Betrieb nehmen, sofern sich deren eingestellte Frequenzen wechselseitig unterscheiden. Aufgrund des meist vorgegebenen und in der Anzahl der Kanäle beschränkten Kanalrasters der verwendeten Funktechnologie sind die Einstellmöglichkeiten des Benutzers insoweit jedoch immanent auf eine feste Zahl von Kanälen beschränkt, die mithin auch die Anzahl der auf diesen Kanälen kommunizierenden Hebebühnensysteme innerhalb der Funkreichweite limitiert.Such an arrangement has the disadvantage that the maximum number of lifting platform systems that can be operated simultaneously in a workshop is limited by the frequency range, which is usually regulated by law, of the wireless network provided for wireless communication. Due to an existing radio link between the single-column lifts of each lift system, several such systems can only operate in parallel, provided that their set frequencies are mutually different. Due to the mostly predetermined and limited in the number of channels channel grid of the radio technology used, the user's options are so far however immanently limited to a fixed number of channels, which therefore also limits the number of communicating on these channels lift systems within the radio range.

Der Erfindung liegt daher die Aufgabe zugrunde, ein Hebebühnensystem zu schaffen, welches auf einer begrenzten Aufstellfläche den störungsfreien Betrieb einer großen Anzahl von Hebebühnensystemen ermöglicht.The invention is therefore an object of the invention to provide a lift system, which allows the trouble-free operation of a large number of lift systems on a limited footprint.

Diese Aufgabe wird erfindungsgemäß durch eine Hebevorrichtung gelöst, bei der das Hebebühnensystem nach dem Konfigurieren der Einsäulenhebebühnen oder nach dem Beendigen eines Betätigungsvorgangs zum Heben oder Senken der Lastaufnahmen der Einsäulenhebebühnen in einen Bereitschaftsmodus versetzt wird, in dem der Empfänger jeder Steuereinheit aktiviert und der Sender jeder Steuereinheit deaktiviert ist. Auf diese Weise lässt sich auf einem verfügbaren Funkkanal eine potenziell unbeschränkte Anzahl von Hebebühnensystemen auf einer räumlich begrenzten Aufstellfläche betreiben, wobei immer nur ein Hebebühnensystem unter der Vielzahl der Hebebühnensysteme, die in der Aufstellfläche vorgesehen sind, arbeitet.This object is achieved according to the invention by a lifting device in which the lifting platform system is set to a stand-by mode after the single-column lifting platforms have been configured or after an actuating operation for lifting or lowering the load receptacles of the single-column lifting platforms is activated, in which the receiver of each control unit is activated and the transmitter of each control unit is disabled. In this way, a potentially unlimited number of channels can be allocated to an available radio channel Operate lift systems on a spatially limited footprint, with only one lift system among the plurality of lift systems provided in the footprint always works.

Eine bevorzugte Ausführungsform der Erfindung sieht vor, dass im Bereitschaftsmodus eine benutzerunabhängige, vorzugsweise periodische, Prüfung des eingestellten Funkkanals auf etwaigen Funkverkehr eines weiteren, aktiven Hebebühnensystems erfolgt, wobei ein positives Prüfungsergebnis, also ein Feststellen eines weiteren aktiven Hebesystems, das sich in der Überprüfungsphase befindende Hebebühnensystem in einen passiven Betriebsmodus versetzt, bis der detektierte Funkverkehr abgeschlossen ist. Dieser passive Betriebsmodus, in welchem der Funkverkehr des aktiven Hebebühnensystems zwar empfangen kann, jedoch keine eigenen Funksignale ausgesandt werden, schließt eine Störung des aktiven Hebebühnensystems aus und stellt sicher, dass zu jedem Zeitpunkt höchstens ein Hebebühnensystem von mehreren Hebesystemen innerhalb einer vom Funkbereich abgedeckten Aufstellfläche arbeitet.A preferred embodiment of the invention provides that in the standby mode, a user-independent, preferably periodic, examination of the set radio channel on any radio traffic another active platform system takes place, with a positive test result, ie a determination of another active lifting system, which is in the checking phase Suspended lift system in a passive operating mode until the detected radio traffic is completed. This passive mode of operation, in which the radio traffic of the active lift system can receive, but no own radio signals are emitted, excludes a failure of the active lift system and ensures that at most one lift system of several lifting systems within a footprint covered by the radio range works ,

Nach einer vorteilhaften Weiterbildung der Erfindung erfolgt im Bereitschaftsmodus beim Betätigen einer Wecktaste eine Überprüfung, ob der eingestellte Funkkanal durch anderweitigen Funkverkehr belegt ist oder für die Ansteuerung der zum Hebebühnensystem gehörenden Einsäulenhebebühnen zur Verfügung steht. Ergänzend wird eine Abfrage für einen möglichen Betrieb gestartet, um eine Kollision von Funksignalen mit einem anderen aktiven Hebebühnensystem zu vermeiden. Dadurch wird eine Reservierung des eingestellten Funkkanals für das Hebebühnensystem gewährleistet, welches den Kanal bis zum Abschluss der Aktivität somit exklusiv für die Kommunikation der ihm zugeordneten Einsäulenhebebühnen nutzen kann.According to an advantageous embodiment of the invention, in the standby mode when pressing a wakeup button, a check is made whether the set radio channel is occupied by other radio traffic or is available for the control of the lifting platform system belonging to single-column lifts. In addition, a query for a possible operation is started in order to avoid a collision of radio signals with another active lift system. This ensures a reservation of the set radio channel for the lifting platform system, which thus can use the channel until the conclusion of the activity exclusively for the communication of his assigned single-column lifts.

Sofern der Funkkanal bei gedrückter Wecktaste des Hebesystems frei ist, geht das System vorzugsweise in einen aktiven Betriebsmodus über und führt das Heben oder Senken der Lastaufnahme durch.If the radio channel is free while the wake-up button of the lifting system is pressed, the system preferably enters an active operating mode and carries out the lifting or lowering of the load pick-up.

Für den Fall, dass der Funkkanal beim Drücken der Taste belegt ist, wird vorzugsweise der Bereitschaftsmodus beibehalten, das heißt, dass ein Aktivieren der Einsäulenhebebühnen des Hebebühnensystems unterbleibt. Eine weitere Ausgestaltung der Erfindung sieht vor, dass im Falle einer Betätigung der Wecktaste bei belegtem Funkkanal ein freier Funkkanal gesucht wird, auf den das Hebebühnensystem seine Empfänger im Erfolgsfall einstellt und ihn als aktuellen Kanal übernimmt. Diese Variante bringt den Vorzug, dass beide Hebebühnensysteme fortan auf unterschiedlichen Kanälen gleichzeitig betrieben werden können, ohne sich gegenseitig im Funkverkehr zu behindern.In the event that the radio channel is occupied when the key is pressed, preferably the standby mode is maintained, that is, a Activation of the single-column lifts of the lift system is omitted. A further embodiment of the invention provides that, in the event of actuation of the wake-up button when the radio channel is occupied, a free radio channel is sought to which the lift system adjusts its receiver in case of success and takes him as the current channel. This variant has the advantage that both lift systems can be operated simultaneously on different channels at the same time, without hindering each other in the radio traffic.

Nach einer bevorzugten Ausführungsform der Erfindung wird die Suche nach freien Funkkanälen dabei auf Funkkanäle eines vorgegebenen Frequenzbandes beschränkt. Auf diese Weise wird die Interoperabilität der einzelnen Bühnen eines Systems gewährleistet, während gleichzeitig etwaigen Zuteilungen des Gesetzgebers hinsichtlich der zur Verfügung stehenden Frequenzbereichen entsprochen werden kann.According to a preferred embodiment of the invention, the search for free radio channels is limited to radio channels of a given frequency band. In this way, the interoperability of the individual stages of a system is ensured, while at the same time any allocations of the legislator with regard to the available frequency ranges can be met.

Schließlich sieht eine vorteilhafte Ausgestaltung der Erfindung ein dezentrales Bediengerät für die Konfiguration und/oder die Steuerung der einzelnen Einsäulenhebebühnen des Hebebühnensystems vor. Eine derartige Ausführung der Erfindung erlaubt die einzelne Ansteuerung einer Vielzahl von Hebebühnensystemen von einem einzigen zentralen Arbeitsplatz. Dieses dezentrale Bediengerät ist als Master für die zu einem Hebebühnensystem konfigurierten Einsäulenhebebühnen definiert, wobei die Einsäulenhebebühnen selbst als Slaves dienen. Dabei kann ein Master mehrere Hebebühnensysteme ansteuern oder für jedes Hebebühnensystem einen Master als separates Bediengerät vorgesehen sein. Alternativ kann eine Einsäulenhebebühne des Hebebühnensystems als Master definiert beziehungsweise programmiert werden, so dass die weiteren eingebundenen Einsäulenhebebühnen innerhalb des Hebebühnensystems als Slaves definiert werden.Finally, an advantageous embodiment of the invention provides a decentralized operating device for the configuration and / or the control of the individual single-column lifting platforms of the lifting platform system. Such an embodiment of the invention allows the individual control of a variety of lift systems from a single central workplace. This remote control unit is defined as the master for the single-column lifts configured for a lift system, with the single-column lifts acting as slaves themselves. In this case, a master can control several lifting platform systems or be provided for each lifting platform a master as a separate control unit. Alternatively, a single-column lift of the lift system can be defined or programmed as a master, so that the other integrated single-column lifts are defined as slaves within the lift system.

Die Erfindung sowie weitere vorteilhafte Ausführungsformen und Weiterbildungen derselben werden im Folgenden anhand der in den Zeichnungen dargestellten Beispiele näher beschrieben und erläutert. Die der Beschreibung und den Zeichnungen zu entnehmenden Merkmale können einzeln für sich oder zu mehreren in beliebiger Kombination erfindungsgemäß angewandt werden. Es zeigen:

  • Figur 1 eine perspektivische Ansicht einer Einsäulenhebebühne in einer Ruheposition,
  • Figur 2 eine perspektivische Ansicht eines vier Einsäulenhebebühnen umfassenden Hebebühnensystems in einer oberen Hubendlage,
  • Figur 3 ein Blockdiagramm einer Mehrzahl von Hebebühnensystemen,
  • Figur 4 einen Programmablaufplan eines Hebebühnensystems,
  • Figur 5 eine Detaildarstellung des Bereitschaftsmodus bei längerer Inaktivität,
  • Figur 6 einen alternativen Programmablaufplan eines gegenüber der Ausführungsform der Figur 4 weiterentwickelten Hebebühnensystems und
  • Figur 7 eine zeitliche Abfolge der Betriebsmodi bei einem abwechselnden Betrieb mehrerer Hebebühnensysteme.
The invention and further advantageous embodiments and developments thereof are described in more detail below with reference to the examples shown in the drawings and explained. The features to be taken from the description and the drawings can be used individually or in any combination be applied according to the invention. Show it:
  • FIG. 1 a perspective view of a one-column lift in a rest position,
  • FIG. 2 3 is a perspective view of a lift system comprising four single-column lifts in an upper stroke end position;
  • FIG. 3 a block diagram of a plurality of lift systems,
  • FIG. 4 a program flow chart of a lift system,
  • FIG. 5 a detailed view of the standby mode during prolonged inactivity,
  • FIG. 6 an alternative program flowchart over the embodiment of the FIG. 4 advanced lift system and
  • FIG. 7 a temporal sequence of operating modes in an alternating operation of several lift systems.

In Figur 1 ist eine perspektivische Ansicht einer mobilen Einsäulenhebebühne 11 in einer Ruheposition gezeigt. Eine solche Einsäulenhebebühne 11 umfasst ein mobiles Grundgestell 12 mit einer daran angeordneten Hubsäule 13, in welcher ein Träger 14 mit einem darauf angeordneten Lastaufnahmemittel 15 auf und ab bewegbar geführt wird. Zum Heben und Senken ist eine Hubeinheit 16 vorgesehen, die zumindest eine Steuereinheit und einen Hydraulikzylinder umfasst, um das Lastaufnahmemittel 15 auf und ab zu bewegen. Zur Gewährleistung der Stabilität im mobilen Einsatz weist das Grundgestell 12 drei Abstützpunkte außerhalb des Lastaufnahmebereichs auf. Eine solche Einsäulenhebebühne ist aus der DE 10 2012 106 073.6 bekannt, auf welche vollumfänglich Bezug genommen wird. Alternativ können auch weitere Einsäulenhebebühnen 11 einsetzbar sein, die zumindest ein Grundgestell 12, eine Lastaufnahme 16 und eine Hubeinheit 16 umfasst.In FIG. 1 is a perspective view of a mobile single column lift 11 shown in a rest position. Such a single-column lifting platform 11 comprises a mobile base frame 12 with a lifting column 13 arranged thereon, in which a carrier 14 with a load-receiving means 15 arranged thereon is guided movable up and down. For lifting and lowering a lifting unit 16 is provided which comprises at least one control unit and a hydraulic cylinder to move the load receiving means 15 up and down. To ensure stability in mobile use, the base frame 12 has three support points outside the load receiving area. Such a single column lift is from the DE 10 2012 106 073.6 known, to which reference is made in full. Alternatively, it is also possible to use further single-column lifting platforms 11 which comprise at least one base frame 12, a load receiver 16 and a lifting unit 16.

Figur 2 zeigt den Einsatz eines Hebebühnensystems 19, welches beispielsweise vier Einsäulenhebebühnen 11 umfasst, die in einer oberen Hubendlage, etwa zum Zwecke des Radwechsels sowie Reparatur- und/oder Wartungstätigkeiten. Dabei sind vier Einsäulenhebebühnen 11 gemäß Figur 1 mittels ihrer vorzugsweise fahrbaren Grundgestelle 12 an die Räder 17 eines Fahrzeugs 18 angesetzt, so dass jedes Rad 17 auf dem entsprechenden als Radgreifelement ausgeführten Lastaufnahmemittel 15 der ihm jeweils zugeordneten Einsäulenhebebühne 11 ruht. In der gezeigten Position wurde das Fahrzeug 18 bereits mittels einer gleichförmigen Hubbewegung der drahtlos arbeitenden Steuereinheiten der Einsäulenhebebühnen 11 auf Arbeitshöhe verbracht. FIG. 2 shows the use of a lift system 19, which includes, for example, four single-column lifts 11, in an upper Hubendlage, such as for the purpose of wheel replacement and repair and / or maintenance activities. There are four single-column lifts 11 according to FIG. 1 attached by means of their preferably movable base frames 12 to the wheels 17 of a vehicle 18, so that each wheel 17 on the corresponding designed as a wheel gripping load-carrying means 15 of each assigned one-column lift 11 rests. In the position shown, the vehicle 18 has already been brought to a working height by means of a uniform lifting movement of the wirelessly operating control units of the single-column lifting platforms 11.

In Figur 3 ist eine Anordnung von drei Hebebühnensystemen 19, 20, 21 gezeigt, die beispielsweise jeweils eine unterschiedliche Anzahl von Einsäulenhebebühnen 11 aufweisen. Ein erstes Hebebühnensystem 19 wurde dabei so konfiguriert, dass es vier Einsäulenhebebühnen umfasst, um beispielsweise ein zweiachsiges Fahrzeug 18 anzuheben. Acht weitere Einsäulenhebebühnen 11 bilden ein zweites Hebebühnensystem 20, welches zum Heben und Senken eines vierachsigen Lastkraftwagens dienen mag. Schließlich sind sechs Einsäulenhebebühnen 11 zu einem dritten Hebebühnensystem 21 zusammengefasst, das beispielsweise für einen dreiachsigen Omnibus vorgesehen ist. Weitere einzelne, derzeit nicht in Hebebühnensysteme eingebundene Einsäulenhebebühnen 11, die durch Ziffer 28 gekennzeichnet sind, stehen dem Werkstattpersonal zur künftigen Verfügung.In FIG. 3 an arrangement of three lift systems 19, 20, 21 is shown, for example, each having a different number of one-column lifts 11. A first lift system 19 has been configured to include four single column lifts to lift, for example, a biaxial vehicle 18. Eight other single-column lifts 11 form a second lift system 20, which may serve to raise and lower a four-axle truck. Finally, six single-column lifts 11 are combined to form a third lifting platform system 21, which is provided for example for a three-axle bus. Further individual unit lifts 11, which are not currently integrated in lifting platform systems and are identified by the numeral 28, are available to workshop personnel for future use.

Die Hebebühnensysteme 19, 20 und 21 befinden sich in einer Aufstandsfläche 29 beziehungsweise Aufstellfläche von beispielsweise einer Werkstatt, Reparaturhalle oder Lagerhalle. Zum drahtlosen Betrieb der einzelnen Hebebühnensysteme 11 steht der Aufstandsfläche 39 ein Frequenzband zur Verfügung, welches zumindest einen Frequenzkanal umfasst. Vorzugsweise sind mehrere Kanäle innerhalb eines Frequenzbandes vorgesehen. Die Auswahl der Anzahl der einzelnen Einsäulenhebebühnen 11 zu einem Hebebühnensystem 11 sowie die Anzahl der Hebebühnensysteme 11 innerhalb der Aufstandsfläche 39 ist abhängig von den durchzuführenden Tätigkeiten und kann beliebig daran angepasst werden.The lift systems 19, 20 and 21 are located in a footprint 29 or footprint of, for example, a workshop, repair shop or warehouse. For wireless operation of the individual lifting platform systems 11, the contact area 39 has a frequency band which comprises at least one frequency channel. Preferably, several channels are provided within a frequency band. The selection of the number of individual unit elevators 11 to a lift system 11 and the number of lift systems 11 within the footprint 39 is dependent on the activities to be performed and can be adjusted as desired.

Innerhalb des ersten Hebebühnensystems 19 nimmt eine der Einsäulenhebebühnen 11 die Rolle des Masters 22 ein. Den übrigen Einsäulenhebebühnen 11 des ersten Hebebühnensystems 19 wurde im Rahmen von dessen Konfiguration die Rolle von Slaves 23 zugewiesen.Within the first lift system 19, one of the single column lifts 11 occupies the role of the master 22. The rest of the one-column lifts 11 of the first lift system 19 has been assigned the role of slaves 23 in the context of its configuration.

Die Rolle des Masters 22 kann dadurch verwirklicht werden, indem die Einsäulenhebebühne 11 als solche vorprogrammiert ist, das heißt, dass bei der Konfiguration des Systems immer eine solche Einsäulenhebebühne 11 als Master22 zusammen mit weiteren Einsäulenhebebühnen 11 in der Rolle von Slaves 23 zugeordnet werden. Bevorzugt ist jedoch vorgesehen, dass alle Einsäulenhebebühnen 11 baugleich sind und zu einem Hebebühnensystem 19 konfiguriert werden. Durch Betätigen einer Taste der Einsäulenhebebühne 11 wird bei der Konfiguration des Hebebühnensystems 11 dieser die Rolle des Masters 22 zugeordnet, und die anderen werden automatisch die Rolle des Slaves 23 übernehmen. Alternativ kann dies auch durch eine Einzeleingabe an der jeweiligen Steuereinheit der Einsäulenhebebühnen 11 erfolgen, um diese eine Einsäulenhebebühne 11 als Master 22 zu definieren beziehungsweise zu programmieren. Des Weiteren können die Einsäulenhebebühnen 11 alle als Slave 23 programmiert sein und eine beziehungsweise mehrere dezentrale Steuereinheiten zur Verfügung stehen, die den Master bilden. Dadurch können beispielsweise bei einer Konfiguration eines Hebebühnensystems 14 mit vier Einsäulenhebebühnen diese vier Einsäulenhebebühnen 11 ebenfalls als Slave 23 programmiert und dezentral hierzu - also körperlich und räumlich getrennt - zu einem der Einsäulenhebebühnen 11 eine Steuereinheit vorgesehen sein, die den Master 23 bildet. Eine solche Anordnung kann auch für die weiteren in Figur 3 dargestellten Hebebühnensysteme 20, 21 vorgesehen sein. Ebenso kann auch eine Mischung aus den zuvor beschriebenen Systemen innerhalb der Aufstandsfläche 39 eingesetzt werden.The role of the master 22 can be accomplished by preprogramming the single column lift 11 as such, that is, in the configuration of the system, such a single column lift 11 as master 22 is always associated with other single column lifts 11 in the role of slaves 23. However, it is preferably provided that all single-column lifting platforms 11 are identical in construction and are configured to form a lifting platform system 19. By actuating a button of the one-column lift 11, in the configuration of the lift system 11, the latter is assigned the role of the master 22, and the others will automatically assume the role of the slave 23. Alternatively, this can also be done by a single input to the respective control unit of the single-column lifting platforms 11 in order to define or program these single-column lifting platforms 11 as master 22. Furthermore, the single column elevators 11 may all be programmed as slave 23 and one or more remote control units may be available to form the master. As a result, for example, in a configuration of a lift system 14 with four single-column lifts these four single-column lifts 11 also programmed as a slave 23 and decentralized thereto - ie physically and spatially separated - be provided to one of the one-column lifts 11, a control unit which forms the master 23. Such an arrangement can also be used for the others in FIG. 3 illustrated lift systems 20, 21 may be provided. Likewise, a mixture of the systems described above within the footprint 39 can be used.

In entsprechender Weise sind auch innerhalb des zweiten Hebebühnensystems 20 und des dritten Hebebühnensystems 21 die Rollen der Einsäulenhebebühnen als Master 24, 26 beziehungsweise Slaves 25, 27 bei einer Neukonfiguration festgelegt. Die weiteren Einsäulenhebebühnen 28 befinden sich in einem Ruhezustand beziehungsweise Bereitschaftsmodus, können jedoch bei Bedarf durch das Werkstattpersonal den bereits konfigurierten Hebebühnensystemen 19, 20, 21 hinzugefügt werden oder für zusätzliche Hebebühnensysteme dienen.Similarly, within the second lift system 20 and the third lift system 21, the roles of single-column lifts as master 24, 26 or slaves 25, 27 set in a reconfiguration. The other single-column lifts 28 are in an idle or standby mode, but can, if necessary by the workshop staff already configured lift systems 19, 20, 21 or serve for additional lift systems.

Figur 4 zeigt ein Ablaufdiagramm eines erfindungsgemäßen Hebebühnensystems 19. FIG. 4 shows a flowchart of a lift system 19 according to the invention.

Ausgangspunkt der Darstellung ist dabei ein Bereitschaftsmodus 29, auch bekannt als Bereitschaftsbetrieb, Standby-Betrieb oder Wartebetrieb des Hebebühnensystems 19 mit deren Einsäulenhebebühnen 11, in welchem das Hebebühnensystem 19 deaktiviert ist, aber jederzeit und ohne Vorbereitungen oder längere Wartezeiten aktiviert werden kann. In diesem Zustand, der in Figur 5 detaillierter gezeigt wird, beschränkt sich der auch als Leerlaufverlust bezeichnete Energiebedarf des Hebebühnensystems 19 auf ein für das Erkennen einer etwaigen Statusänderung erforderliches Mindestmaß. Ein besonderer Vorteil des beschriebenen Bereitschaftsmodus 29 gegenüber einem weitergehenden Ruhemodus, aktiven Modus beziehungsweise Dauerbetrieb oder dem vollständigen Abschalten des Hebebühnensystems 19 ist darin zu erkennen, dass flüchtige Einstellungsdaten, etwa die aktuelle Systemkonfiguration betreffend, ohne aufwendigere technische Lösungen oder semi-permanente Speicherung im Arbeitsspeicher vorgehalten werden können. Gleichzeitig verlängert der Bereitschaftsmodus 29 die Lebensdauer empfindlicher elektrischer und elektronischer Bauteile der einzelnen Einsäulenhebebühnen, indem ein belastender Einschaltstromstoß, wie er beim Wiedereinschalten des vollständig abgeschalteten Geräts entstünde, gänzlich vermieden wird.Starting point of the presentation is a standby mode 29, also known as standby mode, standby mode or waiting operation of the lift system 19 with their single-column lifts 11 in which the lift system 19 is disabled, but can be activated at any time and without preparations or longer waiting times. In this state, in FIG. 5 is shown in more detail, is also referred to as idle loss energy demand of the lift system 19 to a minimum required for the detection of a possible change in status minimum. A particular advantage of the described standby mode 29 with respect to a more extended sleep mode, active mode or complete shutdown of the lift system 19 can be seen in the fact that volatile settings data, concerning the current system configuration, held without more expensive technical solutions or semi-permanent storage in the main memory can be. At the same time, the standby mode 29 prolongs the life of sensitive electrical and electronic components of the single unit elevators by completely avoiding a burdensome inrush current, such as would occur when the unit is completely turned off.

Gegenüber einem konventionellen Dauerbetrieb lässt sich durch den Bereitschaftsmodus 29 dabei eine beträchtliche Stromersparnis realisieren, da zentrale Komponenten der zum System gehörenden Einsäulenhebebühnen 11, wie etwa deren Hydrauliksteuerung oder Funksender, im Bereitschaftsmodus 29 deaktiviert werden. Die während der nutzungsfreien Phase erzielte Reduzierung der Leistungsaufnahme verlängert dabei auch die Zeitspanne, in der die einzelnen Einsäulenhebebühnen 11 angesichts der begrenzten Kapazität der darin verbauten Akkumulatoren netzunabhängig betrieben werden können.In contrast to conventional continuous operation, the standby mode 29 makes it possible to realize a considerable power saving since central components of the single-column lifting platforms 11 belonging to the system, such as their hydraulic control or radio transmitter, are deactivated in the standby mode 29. The reduction in power consumption achieved during the use-free phase also extends the time span in which the individual single-column lifting platforms 11 can be operated independently of the mains in view of the limited capacity of the accumulators installed therein.

In diesem Bereitschaftsmodus 29 des Hebebühnensystems 19 beschränkt sich dessen Aktivität dabei gemäß der in der Informatik als Polling bekannten Methode darauf, den Status des Systems mittels zyklischer Abfragen zu überprüfen. Ein etwa mittels eines SLEEP- oder HALT-Befehls in den Bereitschaftszustand versetzter Mikroprozessor der Steuereinheit wird dabei nach Ablauf eines festgelegten Abtastintervalls 30, typischerweise im Millisekunden- bis Sekundenbereich, reaktiviert. Beim Betätigen einer Wecktaste im Bedienfeld der Steuereinheit führt die Steuereinheit eine Abfrage 31 aus und prüft den aktuellen Funkkanal auf Funkverkehr. Sollte die Steuereinheit im Rahmen dieser Prüfung 32 eine anderweitige Belegung des eingestellten Funkkanals feststellen, so verbleibt das Hebebühnensystem 19 vorerst im Ruhezustand. Als belegt wird ein Kanal dann angesehen, wenn ein der Nennfrequenz des Kanals entsprechendes Trägersignal, auch bekannt als Träger, empfangen wird. Die Steuereinheit zeigt dem Werkstattpersonal diesen Umstand vorzugsweise über das Bedienfeld an, sodass der gegenwärtige Benutzer über die vorübergehende Blockierung des Funkkanals informiert ist und die Anforderung - zumeist nach kurzer Wartezeit - durch einen erneuten Druck der Wecktaste wiederholen kann. An der Steuereinheit kann eine separate Wecktaste als Bedientaste vorgesehen sein. Bevorzugt ist die Wecktaste jedoch mit einer weiteren an der Steuereinheit vorgesehenen Funktionstaste kombiniert, das heißt, dass für den Benutzer beispielsweise eine Taste für das Heben und Senken zur Verfügung steht, jedoch beim Betätigen dieser Taste "Heben" oder "Senken" gleichzeitig auch die Wecktaste beziehungsweise eine Weckfunktion in der Steuerung der Steuereinheit aktiviert wird. In diesem Fall ist die Wecktaste nicht körperlich vorhanden, sondern integriert oder als Programmschritt ausgeführt, so dass beim Betätigen der Funktionstaste nicht unmittelbar die auf der Funktionstaste dargestellte Funktion gestartet wird.In this standby mode 29 of the lifting platform system 19, its activity is limited to checking the status of the system by means of cyclic queries, in accordance with the method known in computer science as polling. An approximately by means of a SLEEP or HALT command in the standby state offset microprocessor of the control unit is thereby reactivated after a predetermined sampling interval 30, typically in the millisecond to seconds range. When pressing a wake-up button in the control panel of the control unit, the control unit performs a query 31 and checks the current radio channel for radio communication. Should the control unit detect a different occupancy of the set radio channel within the scope of this test 32, the lifting platform system 19 remains in the idle state for the time being. As occupied, a channel is considered to be received when a carrier signal corresponding to the nominal frequency of the channel, also known as carrier, is received. The control unit preferably displays this circumstance to the workshop personnel via the control panel, so that the current user is informed about the temporary blocking of the radio channel and can repeat the request - usually after a short waiting time - by pressing the wake-up key again. At the control unit, a separate wake-up button may be provided as a control button. However, the wake-up key is preferably combined with another function key provided on the control unit, that is, for the user, for example, a button for raising and lowering is available, but when pressing this key "raise" or "lower" simultaneously the wake-up button or an alarm function is activated in the control of the control unit. In this case, the wake-up button is not physically present, but integrated or executed as a program step, so that when pressing the function key not directly on the function key shown function is started.

Erweist sich der eingestellte Kanal im Rahmen der Prüfung 32 als frei und steht dem Hebebühnensystem 19 somit für die Koordination der ihm zugeordneten Einsäulenhebebühnen 11 zur Verfügung, so leitet die Steuereinheit das Hebebühnensystem 19 vom Bereitschaftsmodus 29 in einen aktiven Betriebsmodus 34 über. Gleichzeitig kann diese Zustandsänderung in der Anzeige der Steuereinheit ausgegeben werden. In diesem Zustand steht die Nutzfunktion des Hebebühnensystems 19, die im Heben und Senken der Lastaufnahmemittel 15 der ihm zugeordneten Einsäulenhebebühnen 11 besteht, vollumfänglich zur Verfügung. Zu diesem Zweck sind insbesondere die Funksender der dem System zugehörigen Einsäulenhebebühnen 11 aktiviert. Der von diesen erzeugte, zur Koordination der Einsäulenhebebühnen 11 notwendige Funkverkehr auf dem eingestellten Funkkanal signalisiert dabei gleichzeitig anderen Hebebühnensystemen 20, 21, dass der Kanal für diese Hebebühnensysteme 20, 21 als belegt zu betrachten ist und nicht zur Verfügung steht. Deren Sender sind abgeschalten, und nur die Empfänger der Steuereinheiten der Einsäulenhebebühne 11 der weiteren Hebebühnensysteme 20, 21 sind aktiv. Erst nach Abschluss der Aktivität des Hebebühnensystems 19, deren Dauer von der Anforderung des Benutzers und den physikalischen Randbedingungen der Anwendung abhängt, geht die Steuereinheit das Hebebühnensystem 19 selbsttätig wieder in den Bereitschaftsmodus 29 über.If the set channel proves to be free within the framework of test 32 and is therefore available to the lifting platform system 19 for the coordination of the single-column lifting platforms 11 assigned to it, the control unit directs the lifting platform system 19 from the standby mode 29 an active mode 34 via. At the same time, this state change can be output in the display of the control unit. In this state, the useful function of the lifting platform system 19, which consists in lifting and lowering the load-receiving means 15 of the associated one-column lifting platforms 11, is fully available. For this purpose, in particular the radio transmitters of the single-column lifting platforms 11 associated with the system are activated. The generated by these, necessary for the coordination of Einsäulenhebebhnen 11 radio traffic on the set radio channel simultaneously signals other lifting platform systems 20, 21, that the channel for these lifts systems 20, 21 is considered to be occupied and is not available. Their transmitters are switched off, and only the receivers of the control units of the single column lifting platform 11 of the further lifting platform systems 20, 21 are active. Only after the completion of the activity of the lift system 19, the duration of which depends on the user's request and the physical constraints of the application, the control unit automatically returns the lift system 19 to the standby mode 29.

Stellt die Steuereinheit des Masters 22, 24, 26 der Hebebühnensysteme 19, 20, 21 während deren Bereitschaftsmodus 29 im Rahmen ihres Abtastzyklus fest, dass die Wecktaste gegenwärtig nicht gedrückt ist, nimmt sie dennoch eine von der Benutzeranforderung unabhängige Prüfung 35 des aktuellen Funkkanals auf Funkverkehr vor. Ergibt diese, dass derzeit kein anderes Hebebühnensystem 19, 20, 21 den eingestellten Kanal zur Koordination seiner Einsäulenhebebühnen 11 nutzt, so behält die Steuereinheit des jeweiligen Masters 22, 24, 26 den Bereitschaftsmodus 29 bei.If the control unit of the master 22, 24, 26 of the lift systems 19, 20, 21 during their standby mode 29 determines that the wake-up button is not currently depressed during their scan cycle, it will still take a user-independent check 35 of the current radio channel for radio traffic in front. If this results in no other lifting platform system 19, 20, 21 currently using the adjusted channel for coordinating its single-column lifting platforms 11, the control unit of the respective master 22, 24, 26 maintains the standby mode 29.

Lässt entsprechender Funkverkehr jedoch die Aktivität eines anderen Hebebühnensystems 19, 20, 21 erkennen, so leitet die Steuereinheit des Masters 22, 24, 26 des Hebebühnensystems 19, 20, 21 einen Zustandsübergang vom Bereitschaftsmodus 29 in einen passiven Betriebsmodus 36 ein. Diese Statusänderung gibt die Steuereinheit dem Werkstattpersonal durch eine entsprechende Anzeige (etwa: "Kanal belegt") zu erkennen. Auch in diesem passiven Betriebsmodus 36 verbleiben die Sender des Hebebühnensystems 19, 20, 21 im inaktiven Zustand; jedoch wird der Funkverkehr von dem anderen aktiven Hebebühnensystem kontinuierlich empfangen, um eine Beendigung von dessen Aktivität feststellen zu können. Sobald dies der Fall ist, leitet die jeweilige Steuereinheit des Masters das jeweilige Hebebühnensystem 19, 20, 21 vom passiven Betriebsmodus 36 wieder in den Bereitschaftsmodus 29 über. Dieser Zustandswechsel wird in der Anzeige der Steuereinheit dargestellt.If, however, corresponding radio traffic makes it possible to detect the activity of another lifting platform system 19, 20, 21, the control unit of the master 22, 24, 26 of the lifting platform system 19, 20, 21 initiates a state transition from the standby mode 29 into a passive operating mode 36. This status change is given by the control unit to the workshop personnel by a corresponding display (for example: "Channel Even in this passive mode of operation 36, the transmitters of the lift system 19, 20, 21 remain in the inactive state, however, the radio traffic is continuously received by the other active lift system in order to detect an end of its activity If this is the case, the respective control unit of the master transfers the respective lifting platform system 19, 20, 21 from the passive operating mode 36 back to the standby mode 29. This change of state is shown in the display of the control unit.

In Figur 6 ist ein modifizierter Programmablaufplan des zu Figur 4 beschriebenen Ablaufplans für das Hebebühnensystem 19, 20, 21 dargestellt. Dieses unterscheidet sich in seiner Reaktion auf eine mögliche Belegung des eingestellten Funkkanals bei gedrückter Wecktaste. Während die Ausführungsform gemäß Figur 4 in diesem Fall eine Beibehaltung des Bereitschaftsmodus 29 des Hebebühnensystems bei entsprechender Rückmeldung an den Benutzer vorsah und erst dann aktiviert werden kann, wenn das weitere Hebebühnesystem seine Hebe- oder Senkbewegung beendet hat, ermöglicht die vorliegende Ausgestaltung eine flexiblere Reaktion auf dessen Aufforderung zur Inbetriebnahme. Diese Reaktion besteht in einem selbstständigen Kanalwechsel 37 des Hebebühnensystems 19, 20, 21 auf einen noch zur Verfügung stehenden Kanal eines Frequenzbereiches, der für die Aufstandsfläche 39 zugelassen und freigegeben ist. Zu diesem Zweck wird der Kanal zunächst gemäß einem festgelegten, in der Regel zyklischen Suchschema inkrementiert. Typischerweise sind die in Frage kommenden Funkkanäle dabei gemäß ihrem Frequenzbereich aufsteigend sortiert und fortlaufend nummeriert.In FIG. 6 is a modified program schedule to FIG. 4 described flowchart for the lift system 19, 20, 21 shown. This differs in its reaction to a possible assignment of the set radio channel while holding the wake-up button. While the embodiment according to FIG. 4 in this case, a maintenance of the standby mode 29 of the lift system provided with appropriate feedback to the user and can only be activated when the other lift system has completed its lifting or lowering, the present embodiment allows a more flexible response to its request for commissioning. This reaction consists in an independent channel change 37 of the lift system 19, 20, 21 on a still available channel of a frequency range, which is approved for the footprint 39 and released. For this purpose, the channel is first incremented according to a fixed, usually cyclic search scheme. Typically, the candidate radio channels are sorted in ascending order according to their frequency range and numbered consecutively.

Die Kanalaufteilung hängt dabei maßgeblich von gegebenen Randbedingungen wie der Begrenzung des verfügbaren Frequenzbands durch den Gesetzgeber, der zu erzielenden Übertragungsrate sowie der Wahrscheinlichkeit möglicher Interferenzerscheinungen ab. So bedingt im exemplarischen Frequenzbereich von 433,05 bis 434,65 MHz das Erreichen einer Übertragungsrate von 50 Kbit/s eine Bandbreite von ca. 100 kHz und einen entsprechenden Kanalabstand von ca. 200 kHz. Eine solche Rasterung führt im Ergebnis zu einer Anzahl von neun verfügbaren Funkkanälen. Derartige Anwendungen werden in der Funktechnik als Short Range Devices (SRD) bezeichnet, da sie typische Reichweiten zwischen 0,5 und 2 km ermöglichen, und bedienen sich eines als ISM-Band bekannten Gemeinschaftsbereichs, wie er beispielsweise auch von medizinischen Geräten, schnurlosen Thermometern, schnurlosen Kopfhörern und mobilen Geschwindigkeitsmessgeräten genutzt wird.The channel allocation depends largely on given boundary conditions such as the limitation of the available frequency band by the legislature, the transmission rate to be achieved as well as the probability of possible interference phenomena. Thus, in the exemplary frequency range of 433.05 to 434.65 MHz, achieving a transmission rate of 50 kbit / s requires a bandwidth of approx. 100 kHz and a corresponding channel spacing of about 200 kHz. Such rasterization results in a number of nine available radio channels. Such applications are referred to in the radio as Short Range Devices (SRD), as they allow typical ranges between 0.5 and 2 km, and use a common area known as ISM band, as he also medical devices, cordless thermometers, cordless headphones and mobile speedometers.

Auf dieser Kanalaufteilung basierend vollzieht die Steuereinheit einen Kanalwechsel 37 auf die nächsthöhere Kanalnummer, wobei eine Überschreitung der höchsten Kanalnummer die Steuereinheit veranlasst, die Suche bei der niedrigsten Kanalnummer fortzusetzen. Da die Steuereinheiten sämtlicher Einsäulenhebebühnen 11 des Hebebühnensystems 19, 20, 21 dasselbe Suchschema anwenden, erfolgt der Kanalwechsel 37 innerhalb des jeweiligen Hebebühnensystems 19, 20, 21 dabei synchron, so dass die Funkverbindung zwischen den Steuereinheiten der einzelnen Einsäulenhebebühnen 11 des jeweiligen Hebebühnensystems 19, 20, 21 nicht abreißt, sondern im Wesentlichen kontinuierlich fortbesteht.Based on this channel division, the control unit makes a channel change 37 to the next higher channel number, and exceeding the highest channel number causes the control unit to continue the search at the lowest channel number. Since the control units of all single-column lifts 11 of the lifting platform system 19, 20, 21 apply the same search scheme, the channel change 37 is synchronized within the respective lift system 19, 20, 21, so that the radio connection between the control units of the single unit elevators 11 of the respective lift system 19, 20th , 21 does not break off, but essentially continues to exist.

Sobald die Empfänger der Steuereinheiten der Einsäulenhebebühne 11 des jeweiligen Hebebühnensystems 19, 20, 21 auf den neuen Funkkanal eingestellt sind, wird auch dieser hinsichtlich anderweitigen Funkverkehrs untersucht, wobei sich der obige Ablauf entsprechend wiederholt. Diese Kanalsuche setzen die Steuereinheiten in der Regel solange fort, bis ein noch freier Funkkanal angetroffen wird. Sodann leiten die Steuereinheiten einen Übergang vom Bereitschaftsmodus 29 in den aktiven Betriebsmodus 34 ein, wobei die Sender und Empfänger sämtlicher Einsäulenhebebühnen 11 des jeweiligen Hebebühnensystems 19, 20, 21 auf dem gefundenen freien Funkkanal betrieben werden.As soon as the receivers of the control units of the single column lifting platform 11 of the respective lifting platform system 19, 20, 21 are set to the new radio channel, this channel is also examined with regard to other radio communications, the above procedure being repeated accordingly. As a rule, the control units continue this channel search until a still free radio channel is encountered. The control units then initiate a transition from the standby mode 29 to the active operating mode 34, the transmitters and receivers of all single-column lifts 11 of the respective lift system 19, 20, 21 being operated on the found free radio channel.

Nur im eher seltenen Fall, dass nach einem vollständigen Absuchen 38 des Frequenzbereichs die Belegung sämtlicher Kanäle festzustellen ist, reagieren die Steuereinheiten der Einsäulenhebebühnen 11 des jeweiligen Hebebühnensystems 19, 20, 21 in einer der Ausführungsform der Figur 4 analogen Weise, indem sie den Bereitschaftsmodus 29 des Hebebühnensystems 19, 20, 21 beibehält und die Situation über die Anzeige quittiert. Der somit über die vorübergehende Blockierung des Frequenzbands informierte Benutzer kann die Anforderung - zumeist nach kurzer Wartezeit - durch einen erneuten Druck der Wecktaste wiederholen.Only in the rare case that after a complete scan 38 of the frequency range, the occupancy of all channels is determined, react the control units of the single column lifts 11 of the respective lift system 19, 20, 21 in one of the embodiment of FIG. 4 analogous way, by maintaining the standby mode 29 of the lift system 19, 20, 21 and acknowledges the situation on the display. The user thus informed about the temporary blocking of the frequency band can repeat the request - usually after a short waiting time - by pressing the wake-up key again.

Figur 7 zeigt eine zeitliche Abfolge der beschriebenen Betriebsmodi bei einem abwechselnden Betrieb mehrerer Hebebühnensysteme gemäß einer der vorgezeigten Figuren auf einem gegebenen Funkkanal, wobei n die Gesamtanzahl der auf diesen Kanal eingestellten Hebebühnensysteme 19, 20, 21 symbolisiert. Die in diesem Zusammenhang als Sets bezeichneten Hebebühnensysteme 19, 20, 21 sind dabei fortlaufend nummeriert, wobei im Bereitschaftsmodus 29 befindliche Sets schematisch als schraffierte Rechtecke dargestellt sind. Sets im passiven Betriebsmodus 36 werden als neutrale Rechtecke gezeigt, während solche im aktiven Betriebsmodus 34 durch ihre starke Umrandung hervorgehoben sind. FIG. 7 shows a time sequence of the operating modes described in an alternate operation of several lift systems according to one of the figures shown on a given radio channel, where n symbolizes the total number of set on this channel lift systems 19, 20, 21. The lifting platform systems 19, 20, 21 referred to as sets in this context are numbered consecutively, with sets in standby mode 29 being shown schematically as hatched rectangles. Sets in passive mode of operation 36 are shown as neutral rectangles, while those in active mode 34 are highlighted by their strong edges.

Wie die Abbildung in Figur 7 zeigt, befinden sich sämtliche Sets zunächst im Bereitschaftsmodus 29. Im Zeitpunkt t1 wird nun die Wecktaste einer dem Set 2 zugeordneten Einsäulenhebebühne 11 betätigt, was gemäß der hinsichtlich der Figuren 4 und 5 dargestellten Programmlogik sämtliche Einsäulenhebebühnen 11 dieses Sets vom Bereitschaftsmodus 29 in den aktiven Betriebsmodus 34 versetzt. Nahezu zeitgleich detektieren die übrigen Sets 1 und 3 bis n den durch die Aktivität des Sets 2 hervorgerufenen Funkverkehr und gehen selbst vom Bereitschaftsmodus 29 in den passiven Betriebsmodus 36 über. Diese Konstellation dauert solange an, bis im - durch die Benutzeranforderung und physikalische Randbedingungen bedingten - Zeitpunkt t2 die Aktivität des Sets 2 als abgeschlossen erachtet werden kann und der entsprechende Funkverkehr auf dem in Rede stehenden Kanal zum Erliegen kommt. Auch diesen Umstand stellen die übrigen Sets 1 und 3 bis n mit minimaler Verzögerung fest und fallen - ebenso wie das zuvor aktive Set 2 selbst - in den Bereitschaftsmodus zurück. Erst im Zeitpunkt t3 ändert sich die Situation erneut, als die Wecktaste einer dem Set 1 zugeordneten Einsäulenhebebühne 11 betätigt wird. Entsprechend der vorherigen Aktivierung des Sets 2 geht nun Set 1 vom Bereitschaftsmodus in den aktiven Betriebsmodus über und lässt die übrigen Sets 2 bis n in den passiven Betriebsmodus wechseln, um die Möglichkeit einer gegenseitigen Störung der Sets auszuschließen.Like the picture in FIG. 7 shows, all sets are initially in standby mode 29. At time t1 now the wake-up button of the set 2 associated one-column lift 11 is actuated, which in accordance with the FIGS. 4 and 5 shown program logic all single-column lifts 11 of this set from standby mode 29 in the active mode 34 offset. Almost at the same time, the remaining sets 1 and 3 to n detect the radio traffic caused by the activity of the set 2 and transition even from the standby mode 29 into the passive operating mode 36. This constellation lasts until the activity of the set 2 can be regarded as completed in the time t2 conditioned by the user request and physical boundary conditions and the corresponding radio traffic on the channel in question comes to a standstill. This fact, too, is determined by the remaining sets 1 and 3 to n with minimal delay and - just like the previously active set 2 itself - falls back into standby mode. Only at time t3 does the situation change again, when the wake-up button of a set 1 associated one-column lift 11 is operated. In accordance with the previous activation of set 2, set 1 now switches from standby mode to active operating mode and allows the remaining sets 2 to n to switch to the passive operating mode in order to rule out the possibility of mutual interference between the sets.

Claims (8)

  1. Method for the operation of a lifting platform system (19, 20, 21), in particular for several lifting platform systems (19, 20, 21) provided on a spatially limited installation surface (39), said lifting platform system (19, 20, 21) having at least two single-column lifting platforms (11, 22-28) each having a control unit and a loading handling attachment (15), wherein each control unit has a transmitter and a receiver and the method comprises the following steps:
    a) selection of a predetermined number of single-column lifting platforms (11, 22-28) for the formation of the lifting platform system (19, 20, 21),
    b) implementation of the single-column lifting platforms (11, 22-28) and configuration of the single-column lifting platforms (11, 22-28) to the lifting platform system (19, 20, 21) by setting up a radio connection on a radio channel between the control units of the single-column lifting platforms (11, 22-28),
    characterised in that
    the lifting platform system (19, 20, 21) is shifted into a standby mode (29) after the configuration of the single-column lifting platforms (11, 22-28) or after the termination of an actuation process for lifting or lowering the load handling attachments (15) of the single-column lifting platforms (11, 22-28), the receiver of each control unit being activated and the transmitter of each control unit being deactivated in said standby mode (29).
  2. Method according to claim 1, characterised in that the standby mode (29) comprises the following sub-steps:
    c) user-independent testing (35) on radio communications of an adjusted radio channel,
    d) if no radio communications are detected according to step c), maintenance of the standby mode (29),
    e) if the radio communications of an additional lifting platform system (19, 20, 21) on the same radio channel are deactivated according to step c), shifting of the lifting platform system (19, 20, 21) into a passive operating mode (36), which comprises receiving the radio communications of the additional lifting platform system (19, 20, 21), and
    f) once the radio communications are shut off according to step c), shifting of the lifting platform system (19, 20, 21) into standby mode (29).
  3. Method according to claim 2, characterised in that the user-independent testing (35) is carried out periodically on radio communications in predetermined periods of time.
  4. Method according to claim 2, characterised in that the standby mode (29) also comprises the following sub-steps:
    g) if an alarm button is pressed in standby mode (29), testing (32) takes place to establish whether the radio channel is occupied.
  5. Method according to claim 4, characterised in that the standby mode (29) also comprises the following sub-steps:
    h) if the radio channel is free according to step c), shifting of the lifting platform system (19, 20, 21) into the active standby mode (34), or
    i) if the alarm button is pressed and the radio channel is occupied according to step c), maintenance of the standby mode (29).
  6. Method according to claim 4, characterised in that the standby mode (29) also comprises the following sub-steps:
    j) if the alarm button is pressed and the radio channel is occupied according to step c), searching for a free radio channel,
    k) if a free radio channel is detected according to step j), channel shift (37) to the free radio channel and shifting of the lifting platform system (19, 20, 21) into the active operating mode (34), or
    1) if no free radio channel is detected according to step j), maintenance of the standby mode (29).
  7. Method according to claim 6, characterised in that the search for radio channels according to step j) is restricted to a predetermined frequency band.
  8. Method according to one of the preceding claims, characterised in that the lifting platform system (19, 20, 21) comprises a decentralised operator unit as master (22, 24, 26), by which the single-column lifting platforms (11, 22-28) are configured as slaves (23, 25, 27) to the lifting platform system (19, 20, 21) according to step b) or that the additional single-column lifting platforms (11) are configured as slaves (22, 24, 26) to the lifting platform system (19, 20, 21) according to step b) with a single-column lifting platform (11) which is selected and/or programmed as the master (22, 24, 26).
EP13756913.3A 2012-09-11 2013-09-05 Operating method for a system of lifting platforms Active EP2895420B1 (en)

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PCT/EP2013/068403 WO2014040911A1 (en) 2012-09-11 2013-09-05 Method for operating a lift system

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CN104768864A (en) 2015-07-08
CN104768864B (en) 2016-11-09
US10000367B2 (en) 2018-06-19
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US20150225213A1 (en) 2015-08-13
WO2014040911A1 (en) 2014-03-20

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