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EP0755565B1 - Remote control device especially for conveying, spraying and distributing machines for concrete and mortar - Google Patents

Remote control device especially for conveying, spraying and distributing machines for concrete and mortar Download PDF

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Publication number
EP0755565B1
EP0755565B1 EP95915170A EP95915170A EP0755565B1 EP 0755565 B1 EP0755565 B1 EP 0755565B1 EP 95915170 A EP95915170 A EP 95915170A EP 95915170 A EP95915170 A EP 95915170A EP 0755565 B1 EP0755565 B1 EP 0755565B1
Authority
EP
European Patent Office
Prior art keywords
emergency stop
remote control
switch
terminal
stop switch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP95915170A
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German (de)
French (fr)
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EP0755565A1 (en
Inventor
Paul BÄUMEN
Wolf-Michael Petzold
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Putzmeister Concrete Pumps GmbH
Original Assignee
Putzmeister AG
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Filing date
Publication date
Application filed by Putzmeister AG filed Critical Putzmeister AG
Publication of EP0755565A1 publication Critical patent/EP0755565A1/en
Application granted granted Critical
Publication of EP0755565B1 publication Critical patent/EP0755565B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • H01H47/002Monitoring or fail-safe circuits

Definitions

  • the invention relates to a remote control arrangement, in particular for conveyors, sprayers and distributors for concrete and mortar, with a central control device for controlling aggregates and signal elements and with with a multi-core remote control cable the remote control device connected to the central control device, the central control device being a means one arranged in the remote control device, manually by hand operated emergency stop switch Emergency stop switching device for the units and signal elements leading main and control circuits, its power supply via an opener trained switch contact of the emergency stop switch if the power supply is interrupted triggers an emergency shutdown.
  • DE-A-2 421 483 discloses a circuit arrangement for monitoring electromagnetically operated safety devices with two switch contacts, which are switched together at the same time.
  • the invention is based on the object the remote control arrangement of the above Kind of improving that even in the case a cable connection in the emergency stop circuit, especially in the Area of the remote control cable by pressing the emergency stop button an emergency shutdown is triggered.
  • the solution according to the invention is based on the idea that ensured even with a cable closure in the emergency stop circuit must be that when the emergency stop switch is actuated the power supply of the emergency stop switchgear is interrupted.
  • the first variant of the invention suggested that the first switch contact at its first connection via a first cable wire of the remote control cable and an overload protection with the "hot" pole of a central control side Voltage source and with its second connection over a second cable core of the remote control cable with a Power supply connection terminal of the emergency stop switchgear is connected that the emergency stop switch in addition one designed as a closer, positively driven has second switching contact, the first connection is connected to the ground pole of the voltage source and its second connection within the remote control device with the second connection of the first switching contact is short-circuited, and that the first and the second Switch contact when pressing the emergency stop switch under Formation of a switching gap one after the other speak to.
  • the first and the second switching contact of the Emergency stop switches can also be combined to form a changeover switch will.
  • the switch contact of the emergency stop switch also at its first connection via a first cable wire of the Remote control cable with a "hot" pole on a central control side Voltage source and with its second Connection via a second cable core with a power supply connection terminal of the emergency stop switchgear is the first and / or second cable wire with one connected to the ground pole of the voltage source Shielding jacket provided.
  • the only figure shows a section of a circuit diagram a cable remote control device, for example for a truck-mounted concrete pump, with remote-controlled emergency stop switch.
  • the circuit diagram includes a section of a Central control device 10 with an emergency stop switching device 12 and a section of a remote control device 14 for a truck-mounted concrete pump.
  • the remote control device 14 is via a multi-core remote control cable 16 and suitable Plug connections 18, 20 with the central control 10 connected. Of the 32 cable cores, for example, 22 are shown in the drawing a total of five.
  • the power supply to the central controller 10 and the Remote control device 14 takes place via an on-board electrical system, for example 24 V DC or AC, with which "hot" pole 24 (phase) and the ground pole 26.
  • an on-board electrical system for example 24 V DC or AC, with which "hot” pole 24 (phase) and the ground pole 26.
  • the emergency stop device 12 has a plurality of connection terminals 28, 30, 32, 34 as well as 36 and 40 on that switched externally can be.
  • the power supply of the emergency stop device 12 takes place via the connections 28 and 30, the connection 30 being galvanically connected to the ground pole 26 and the connection 28 via an emergency stop chain with the hot pole 24 is connectable.
  • the connections 36 are for external wiring of internal circuits of the emergency stop circuit 12 determines while the connections 40 as well as 32 and 34 for controlling external main and Control circuits for triggering the emergency stop functions are determined.
  • With the on button 42 that is Emergency stop switching device 12 activated. The contacts 40 closed and the contact 32, 34 opened.
  • the contacts 40 and 32, 34 fall in return to their home position and trigger an emergency shutdown out.
  • the person in question Power supply line can use the two-pole switch 48 optionally on the remote control device 14 (as drawn) or can be switched to local operation.
  • the feed line 50 which is connected via the cable core 22 'to the Line 52 of the remote control device 14 is connected there is an overload protection 54 on the input side.
  • the supply line 52 is via the as Switch contact 56 of the emergency stop button designed as an opener 46, the return line 58, the cable core 22 '' and the central control-side return line 60 with the Power connector 28 of the emergency stop device 12 connected.
  • the connection 58 of the switching contact 56 is also with a connection 62 one as a closer trained switch contact 64 of the emergency stop switch 46 connected, the other terminal 66 via the cable wire 22 '' 'with one to ground pole 26 of the central control leading ground line 62 is connected.
  • the emergency stop switch 46 If the emergency stop switch 46 is thus actuated, it opens contact 56 initially and thereby interrupts the power supply to the power supply terminal 28 of the emergency stop switching device 12 triggering an emergency shutdown. Shortly after opening contact 46 contact 64 closes and opens input 28 Ground potential. The emergency stop circuit 12 remains still without power in its emergency shutdown state.
  • the invention relates to a remote control arrangement especially for mobile and stationary concrete pumps.
  • the remote control device assigns a central control device 10 Control of aggregates and signal units of the concrete pump and one over a multi-core remote control cable 16 connected to the central control device 10 Remote control device 14 on.
  • the central control device has a means arranged in the remote control device 14, mechanically actuated emergency stop switch 46 remote-controlled emergency stop switch 12, whose Power supply via a positively driven first Switch contact 56 of the emergency stop switch 46 is guided and an emergency shutdown if the power supply is interrupted triggers.
  • a reliable emergency shutdown ensure is in the central control side supply line 50 to the first switching contact designed as an NC contact 56 an overload protection device 54 is arranged. Furthermore is in the emergency stop switch 46 additionally as Closer trained positively driven second switching contact 64 provided, the first connection 66 with is connected to the ground pole 26 of the voltage source and its second connection 62 within the remote control device 14 with the second connection 58 of the first Switching contact 56 is connected.

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  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)
  • Reciprocating Pumps (AREA)

Description

Die Erfindung betrifft eine Fernsteueranordnung, insbesondere für Förder-, Spritz- und Verteilermaschinen für Beton und Mörtel, mit einer Zentralsteuereinrichtung zur Ansteuerung von Aggregaten und Signalelementen und mit einem über ein vieladriges Fernsteuerkabel mit der Zentralsteuereinrichtung verbundenen Fernsteuergerät, wobei die Zentralsteuereinrichtung ein mittels eines im Fernsteuergerät angeordneten, von Hand mechanisch betätigbaren Not-Aus-Schalters fernbedienbaren Not-Aus-Schaltgerät für zu den Aggregaten und Signalelementen führenden Haupt- und Steuerstromkreise aufweist, dessen Stromversorgung über einen als Öffner ausgebildeten Schaltkontakt des Not-Aus-Schalters geführt ist und das bei Unterbrechung der Stromversorgung eine Notabschaltung auslöst.The invention relates to a remote control arrangement, in particular for conveyors, sprayers and distributors for concrete and mortar, with a central control device for controlling aggregates and signal elements and with with a multi-core remote control cable the remote control device connected to the central control device, the central control device being a means one arranged in the remote control device, manually by hand operated emergency stop switch Emergency stop switching device for the units and signal elements leading main and control circuits, its power supply via an opener trained switch contact of the emergency stop switch if the power supply is interrupted triggers an emergency shutdown.

DE-A- 2 421 483 offenbart eine Schaltungsanordnung zur Überwachung von elektromagnetisch betätigten Sicherheibeinrichtungen mit zwei Schaltkontakten, welche gleichzeitig zusammen geschaltet werden.DE-A-2 421 483 discloses a circuit arrangement for monitoring electromagnetically operated safety devices with two switch contacts, which are switched together at the same time.

Dies gewährleistet eine sichere Abschaltung auch im Falle der Störung in einer der beiden Schaltkontakte.This ensures a safe shutdown even in the event of a fault in one of the two switch contacts.

Bei Fernsteueranordnungen für Maschinen der genannten Art ist die Möglichkeit einer Notabschaltung in Gefahrensituationen, die durch Fehlfunktionen oder Fehlbedienungen einerseits oder durch Umgebungsereignisse andererseits eintreten können, unerläßlich. Bei einer Notabschaltung werden üblicherweise alle momentanen Bewegungsabläufe unterbrochen. Da der Not-Aus-Funktion aus Gründen der Arbeitssicherheit somit eine zentrale Bedeutung zukommt, müssen geeignete Vorkehrungen getroffen werden, die auch in Störfällen eine zuverlässige Notabschaltung gewährleisten. Insbesondere ist bei Kabelfernsteuereinrichtungen zu berücksichtigen, daß es bei den langen vieladrigen Fernsteuerkabeln im rauen Baustellenbetrieb zu einem Kabelschluß im Not-Aus-Kreis kommen kann, durch den der Schaltkontakt des Not-Aus-Schalters überbrückt und dadurch außer Funktion gesetzt wird. Der Bediener merkt hierbei erst im Gefahrenfall bei einer Betätigung des Not-Aus-Schalters, daß das Fernsteuerkabel nicht mehr in Ordnung ist.In remote control arrangements for machines of the above Type is the possibility of an emergency shutdown in dangerous situations, caused by malfunction or incorrect operation on the one hand or by environmental events on the other hand, indispensable. At a Emergency shutdowns are usually all instantaneous Movements interrupted. Because of the emergency stop function a central one for reasons of occupational safety Appropriate precautions must be taken become reliable even in the event of a malfunction Ensure emergency shutdown. In particular, at Cable remote control devices to take into account that it with the long multi-core remote control cables in the rough Construction site operation for a cable lock in the emergency stop circuit can come through the switch contact of the emergency stop switch bridged and thus put out of function becomes. The operator only notices in the event of danger when the emergency stop switch is actuated, that the Remote control cable is no longer in order.

Ausgehend hiervon liegt der Erfindung die Aufgabe zugrunde, die Fernsteueranordnung der eingangs angegebenen Art dahingehend zu verbessern, daß auch im Falle eines Kabelschlusses im Not-Aus-Kreis insbesondere im Bereich des Fernsteuerkabels durch Betätigung des Not-Aus-Schalters eine Notabschaltung ausgelöst wird.Proceeding from this, the invention is based on the object the remote control arrangement of the above Kind of improving that even in the case a cable connection in the emergency stop circuit, especially in the Area of the remote control cable by pressing the emergency stop button an emergency shutdown is triggered.

Zur Lösung dieser Aufgabe werden die in den Ansprüchen 1 und 3 angegebenen Merkmalskombinationen vorgeschlagen. Eine vorteilhafte Ausgestaltung der Erfindung ergibt sich aus dem abhängigen Anspruch.To solve this problem are in the claims 1 and 3 specified combinations of features proposed. An advantageous embodiment of the invention results arising from the dependent claim.

Die erfindungsgemäße Lösung geht von dem Gedanken aus, daß auch bei einem Kabelschluß im Not-Aus-Kreis sichergestellt werden muß, daß bei Betätigung des Not-Aus-Schalters die Stromversorgung des Not-Aus-Schaltgeräts unterbrochen wird.The solution according to the invention is based on the idea that ensured even with a cable closure in the emergency stop circuit must be that when the emergency stop switch is actuated the power supply of the emergency stop switchgear is interrupted.

Um dies zu erreichen, wird nach einer ersten Erfindungsvariante vorgeschlagen, daß der erste Schaltkontakt an seinem ersten Anschluß über eine erste Kabelader des Fernsteuerkabels und eine Überlastsicherung mit dem "heißen" Pol einer zentralsteuerungsseitigen Spannungsquelle und mit seinem zweiten Anschluß über eine zweite Kabelader des Fernsteuerkabels mit einer Stromversorgungs-Anschlußklemme des Not-Aus-Schaltgeräts verbunden ist, daß der Not-Aus-Schalter zusätzlich einen als Schließer ausgebildeten, zwangsgeführten zweiten Schaltkontakt aufweist, dessen erster Anschluß mit dem Massepol der Spannungsquelle verbunden ist und dessen zweiter Anschluß innerhalb des Fernsteuergeräts mit dem zweiten Anschluß des ersten Schaltkontakts kurzgeschlossen ist, und daß der erste und der zweite Schaltkontakt beim Betätigen des Not-Aus-Schalters unter Bildung einer Schaltlücke zeitlich nacheinander ansprechen. Der erste und der zweite Schaltkontakt des Not-Aus-Schalters können auch zu einem Umschalter zusammengefaßt werden.To achieve this, the first variant of the invention suggested that the first switch contact at its first connection via a first cable wire of the remote control cable and an overload protection with the "hot" pole of a central control side Voltage source and with its second connection over a second cable core of the remote control cable with a Power supply connection terminal of the emergency stop switchgear is connected that the emergency stop switch in addition one designed as a closer, positively driven has second switching contact, the first connection is connected to the ground pole of the voltage source and its second connection within the remote control device with the second connection of the first switching contact is short-circuited, and that the first and the second Switch contact when pressing the emergency stop switch under Formation of a switching gap one after the other speak to. The first and the second switching contact of the Emergency stop switches can also be combined to form a changeover switch will.

Mit diesen Maßnahmen wird erreicht, daß bei Betätigung des Not-Aus-Schalters im Normalfall der Stromversorgungsanschluß des Not-Aus-Schaltgeräts auf Massepotential umgeschaltet und damit die Notabschaltung ausgelöst wird. Bei einem Kabelschluß im Not-Aus-Kreis führt das Betätigen des Not-Aus-Schalters zu einem Kurzschluß zwischen dem "heißen" Pol und dem Massepol der Spannungsquelle und damit zum Ansprechen der Überlastsicherung. Dadurch wird der "heiße" Pol der Spannungsquelle abgetrennt und die Stromanschlußklemme unter Auslösung der Notabschaltung auf Massepotential gelegt. With these measures it is achieved that when actuated the emergency stop switch is normally the power supply connection of the emergency stop switch to ground potential switched and thus triggered the emergency shutdown becomes. If there is a cable connection in the emergency stop circuit the actuation of the emergency stop switch to a short circuit between the "hot" pole and the ground pole of the voltage source and thus to respond to the overload protection. This will make the "hot" pole of the voltage source disconnected and the power connector under trip the emergency shutdown is set to ground potential.

Bei einer zweiten Lösungsvariante der Erfindung, bei der der Schaltkontakt des Not-Aus-Schalters gleichfalls an seinem ersten Anschluß über eine erste Kabelader des Fernsteuerkabels mit einem "heißen" Pol einer zentralsteuerungsseitigen Spannungsquelle und mit seinem zweiten Anschluß über eine zweite Kabelader mit einer Stromversorgungsanschlußklemme des Not-Aus-Schaltgeräts verbunden ist, ist die erste und/oder zweite Kabelader mit einem an den Massepol der Spannungsquelle angeschlossenen Abschirmmantel versehen. Mit dieser Maßnahme wird bei einem Kabelschluß im Not-Aus-Kreis im Bereich des Fernsteuerkabels ebenfalls erreicht, daß es zu einem Kurzschluß unter Auslösung der Überlastsicherung kommt. Dadurch ist sichergestellt, daß das Not-Aus-Schaltgerät spannungslos wird und die Notabschaltung auslöst.In a second variant of the invention, at the switch contact of the emergency stop switch also at its first connection via a first cable wire of the Remote control cable with a "hot" pole on a central control side Voltage source and with its second Connection via a second cable core with a power supply connection terminal of the emergency stop switchgear is the first and / or second cable wire with one connected to the ground pole of the voltage source Shielding jacket provided. With this measure with a cable connection in the emergency stop circuit in the area of the Remote control cable also achieves that it becomes one Short circuit comes, triggering the overload protection. This ensures that the emergency stop switch is de-energized and the emergency shutdown is triggered.

In beiden Fällen wird der Kabelschluß dem Bediener durch Ansprechen der Überlastsicherung angezeigt. Um diese Sicherheit zu erreichen, war es bisher nötig, den Not-Aus-Kreis redundant, also mindestens zweikanalig auszuführen, mit der Folge, daß ein größeres Kabel und ein größerer Stecker notwendig wurde oder der Funktionsumfang der Fernsteuerung eingeschränkt werden mußte.In both cases, the operator closes the cable Response of the overload protection is displayed. Around So far, it was necessary to achieve safety, the emergency stop circuit redundant, i.e. at least two-channel, with the result that a larger cable and a larger plug became necessary or the range of functions the remote control had to be restricted.

Im folgenden wird die Erfindung anhand eines in der Zeichnung in schematischer Weise dargestellten Ausführungsbeispiels näher erläutert.In the following the invention is based on one in the Drawing shown in a schematic manner embodiment explained in more detail.

Die einzige Figur zeigt einen Ausschnitt eines Stromlaufplans einer Kabelfernsteuereinrichtung, beispielsweise für eine Autobetonpumpe, mit ferngesteuertem Not-Aus-Schaltgerät. The only figure shows a section of a circuit diagram a cable remote control device, for example for a truck-mounted concrete pump, with remote-controlled emergency stop switch.

Der Stromlaufplan umfaßt einen Ausschnitt aus einer Zentralsteuereinrichtung 10 mit einem Not-Aus-Schaltgerät 12 sowie einen Ausschnitt aus einem Fernsteuergerät 14 für eine Autobetonpumpe. Das Fernsteuergerät 14 ist über ein vieladriges Fernsteuerkabel 16 und geeignete Steckverbindungen 18, 20 mit der Zentralsteuerung 10 verbunden. Von den beispielsweise 32 Kabeladern 22 sind in der Zeichnung insgesamt fünf dargestellt.The circuit diagram includes a section of a Central control device 10 with an emergency stop switching device 12 and a section of a remote control device 14 for a truck-mounted concrete pump. The remote control device 14 is via a multi-core remote control cable 16 and suitable Plug connections 18, 20 with the central control 10 connected. Of the 32 cable cores, for example, 22 are shown in the drawing a total of five.

Die Stromversorgung der der Zentralsteuerung 10 und des Fernsteuergeräts 14 erfolgt über ein Bordnetz mit beispielsweise 24 V Gleichstrom oder Wechselstrom, mit dem "heißen" Pol 24 (Phase) und dem Massepol 26.The power supply to the central controller 10 and the Remote control device 14 takes place via an on-board electrical system, for example 24 V DC or AC, with which "hot" pole 24 (phase) and the ground pole 26.

Das Not-Aus-Gerät 12 weist eine Mehrzahl Anschlußklemmen 28, 30, 32, 34 sowie 36 und 40 auf, die extern geschaltet werden können. Die Stromversorgung des Not-Aus-Geräts 12 erfolgt über die Anschlüsse 28 und 30, wobei der Anschluß 30 galvanisch mit dem Massepol 26 und der Anschluß 28 über eine Not-Aus-Kette mit dem heißen Pol 24 verbindbar ist. Die Anschlüsse 36 sind zur externen Beschaltung interner Schaltkreise der Not-Aus-Schaltung 12 bestimmt während die Anschlüsse 40 sowie 32 und 34 zur Ansteuerung externer Haupt- und Steuerstromkreise für die Auslösung der Not-Aus-Funktionen bestimmt sind. Mit dem Ein-Taster 42 wird das Not-Aus-Schaltgerät 12 aktiviert. Dabei werden die Kontakte 40 geschlossen und der Kontakt 32, 34 geöffnet. Durch Betätigen eines der Not-Aus-Schalter 44 im Bereich der Zentralsteuerung oder 46 im Bereich des Fernsteuergeräts 14 fallen die Kontakte 40 bzw. 32, 34 in ihre Grundstellung zurück und lösen eine Notabschaltung aus. Dies erfolgt dadurch, daß über die Not-Aus-Schalter 44 oder 46 die Verbindung zwischen dem Pol 24 der Stromversorgung und der Stromversorgungsklemme 28 des Not-Aus-Schaltgeräts unterbrochen wird. Die betreffende Stromversorgungsleitung kann über den zweipoligen Umschalter 48 wahlweise auf das Fernsteuergerät 14 (wie gezeichnet) oder auf Ortsbedienung umgesteuert werden. In der Zuleitung 50, die über die Kabelader 22' mit der Leitung 52 des Fernsteuergeräts 14 verbunden ist, befindet sich eingangsseitig eine Überlastsicherung 54. Im Fernsteuergerät 14 ist die Zuleitung 52 über den als Öffner ausgebildeten Schaltkontakt 56 des Not-Aus-Tasters 46, der Rückleitung 58, die Kabelader 22'' und die zentralsteuerungsseitige Rückleitung 60 mit dem Stromversorgungsanschluß 28 des Not-Aus-Geräts 12 verbunden. Der Anschluß 58 des Schaltkontakts 56 ist außerdem mit dem einen Anschluß 62 eines als Schließer ausgebildeten Schaltkontakts 64 des Not-Aus-Schalters 46 verbunden, dessen anderer Anschluß 66 über die Kabelader 22''' mit einer zum Massepol 26 der Zentralsteuerung führenden Masseleitung 62 verbunden ist.The emergency stop device 12 has a plurality of connection terminals 28, 30, 32, 34 as well as 36 and 40 on that switched externally can be. The power supply of the emergency stop device 12 takes place via the connections 28 and 30, the connection 30 being galvanically connected to the ground pole 26 and the connection 28 via an emergency stop chain with the hot pole 24 is connectable. The connections 36 are for external wiring of internal circuits of the emergency stop circuit 12 determines while the connections 40 as well as 32 and 34 for controlling external main and Control circuits for triggering the emergency stop functions are determined. With the on button 42 that is Emergency stop switching device 12 activated. The contacts 40 closed and the contact 32, 34 opened. By pressing one of the emergency stop switches 44 in the area the central control or 46 in the area of the remote control device 14 the contacts 40 and 32, 34 fall in return to their home position and trigger an emergency shutdown out. This is done by using the emergency stop switch 44 or 46 the connection between the pole 24 of the Power supply and the power supply terminal 28 of the Emergency stop switching device is interrupted. The person in question Power supply line can use the two-pole switch 48 optionally on the remote control device 14 (as drawn) or can be switched to local operation. In the feed line 50, which is connected via the cable core 22 'to the Line 52 of the remote control device 14 is connected there is an overload protection 54 on the input side. In the remote control device 14, the supply line 52 is via the as Switch contact 56 of the emergency stop button designed as an opener 46, the return line 58, the cable core 22 '' and the central control-side return line 60 with the Power connector 28 of the emergency stop device 12 connected. The connection 58 of the switching contact 56 is also with a connection 62 one as a closer trained switch contact 64 of the emergency stop switch 46 connected, the other terminal 66 via the cable wire 22 '' 'with one to ground pole 26 of the central control leading ground line 62 is connected.

Wird somit der Not-Aus-Schalter 46 betätigt, so öffnet sich zunächst der Kontakt 56 und unterbricht dadurch die Stromzufuhr zur Stromversorgungsklemme 28 des Not-Aus-Schaltgeräts 12 unter Auslösung einer Notabschaltung. Kurzzeitig nach dem Öffnen des Kontakts 46 schließt der Kontakt 64 und legt den Eingang 28 auf Massepotential. Die Not-Aus-Schaltung 12 bleibt dabei nach wie vor stromlos in ihrem Notabschaltzustand.If the emergency stop switch 46 is thus actuated, it opens contact 56 initially and thereby interrupts the power supply to the power supply terminal 28 of the emergency stop switching device 12 triggering an emergency shutdown. Shortly after opening contact 46 contact 64 closes and opens input 28 Ground potential. The emergency stop circuit 12 remains still without power in its emergency shutdown state.

Im rauhen Baustellenbetrieb kommt es immer wieder vor, daß zwischen einzelnen Adern 22 des Fernsteuerkabels 16 ein Kabelschluß eintritt. Ein Kabelschluß zwischen den Adern 22' und 22'' führt dabei zu einer Überbrückung des Schaltkontakts 56. In einem solchen Störfall führt also ein Öffnen des Schaltkontaks 56 bei Betätigen des Not-Aus-Schalters 46 allein noch nicht zur Auslösung einer Not-Abschaltung führen. Erst beim Schließen des Kontakts 64 kommt es im Bereich des Kabelschlusses zu einem Kurzschluß zwischen der Zuleitung 50 und der Masseleitung 66, durch den die Sicherung 54 ausgelöst und die Stromzufuhr über die Leitung 50 zur Stromversorgungsklemme 28 unterbrochen wird. Damit ist gewährleistet, daß auch bei einem solchen Störfall eine Notabschaltung über das Gerät 12 erfolgt.In rough construction site operations, it always happens that between individual wires 22 of the remote control cable 16th a cable connection occurs. A cable connection between the Cores 22 'and 22' 'lead to a bridging of the switching contact 56. In such an accident leads So an opening of the switch contact 56 when the Emergency stop switch 46 alone does not trigger it an emergency shutdown. Only when you close the Contact 64 occurs in the area of the cable closure a short circuit between the lead 50 and the ground line 66, by which the fuse 54 is triggered and the power supply via line 50 to the power supply terminal 28 is interrupted. This ensures that even in the event of such an accident, an emergency shutdown via the device 12.

Wie vorstehend ausgeführt wurde, ist während der Aktivierungsphase der Kontakt 32, 34 der Not-Aus-Schaltung 12 offen, so daß der Kontakt 70 des im betreffenden Stromkreis angeordneten Relais 68 in seine Offenstellung abfällt. Im Not-Aus-Zustand fällt der Kontakt 32, 34 in seine in der Zeichnung dargestellte Grundstellung zurück, so daß der Relais-Kontakt 70 in seine Schließstellung gelangt und die Meldeleuchten 72 und 74 über die Sicherung 76 mit Strom beaufschlagt und zum Leuchten bringt.As stated above, is during the activation phase the contact 32, 34 of the emergency stop circuit 12 open, so that the contact 70 of the particular Circuit arranged relay 68 in its open position falls off. In the emergency stop state, contact 32 drops, 34 in its basic position shown in the drawing back so that the relay contact 70 in its closed position arrives and the indicator lights 72 and 74 over fuse 76 is energized and lit. brings.

Zusammenfassend ist folgendes festzustellen: Die Erfindung betrifft eine Fernsteueranordnung insbesondere für fahrbare und stationäre Betonpumpen. Die Fernsteuereinrichtung weist eine Zentralsteuereinrichtung 10 zur Ansteuerung von Aggregaten und Signaleinheiten der Betonpumpe und ein über ein vieladriges Fernsteuerkabel 16 mit der Zentralsteuereinrichtung 10 verbundenes Fernsteuergerät 14 auf. Die Zentralsteuereinrichtung weist ein mittels eines im Fernsteuergerät 14 angeordneten, mechanisch betätigbaren Not-Aus-Schalters 46 fernbedienbares Not-Aus-Schaltgerät 12 auf, dessen Stromversorgung über einen zwangsgeführten ersten Schaltkontakt 56 des Not-Aus-Schalters 46 geführt ist und das bei Unterbrechung der Stromversorgung eine Not-abschaltung auslöst. Um auch im Falle eines Kabelschlusses in der Not-Aus-Kette bei Betätigung des Not-Aus-Schalters 46 eine zuverlässige Notabschaltung zu gewährleisten, ist in der zentralsteuerungsseitigen Zuleitung 50 zum ersten, als Öffner ausgebildeten Schaltkontakt 56 eine Überlastsicherung 54 angeordnet. Außerdem ist im Not-Aus-Schalter 46 zusätzlich ein als Schließer ausgebildeter zwangsgeführter zweiter Schaltkontakt 64 vorgesehen, dessen erster Anschluß 66 mit dem Massepol 26 der Spannungsquelle verbunden ist und dessen zweiter Anschluß 62 innerhalb des Fernsteuergeräts 14 mit dem zweiten Anschluß 58 des ersten Schaltkontakts 56 verbunden ist.In summary, the following can be stated: The invention relates to a remote control arrangement especially for mobile and stationary concrete pumps. The remote control device assigns a central control device 10 Control of aggregates and signal units of the concrete pump and one over a multi-core remote control cable 16 connected to the central control device 10 Remote control device 14 on. The central control device has a means arranged in the remote control device 14, mechanically actuated emergency stop switch 46 remote-controlled emergency stop switch 12, whose Power supply via a positively driven first Switch contact 56 of the emergency stop switch 46 is guided and an emergency shutdown if the power supply is interrupted triggers. To even in the event of a cable connection in the emergency stop chain when the emergency stop switch is actuated 46 a reliable emergency shutdown ensure is in the central control side supply line 50 to the first switching contact designed as an NC contact 56 an overload protection device 54 is arranged. Furthermore is in the emergency stop switch 46 additionally as Closer trained positively driven second switching contact 64 provided, the first connection 66 with is connected to the ground pole 26 of the voltage source and its second connection 62 within the remote control device 14 with the second connection 58 of the first Switching contact 56 is connected.

Claims (4)

  1. A switch device comprising a central control device (10) for controlling aggregates and signalling elements, whereby the central control device (10) has an emergency stop switch device (12), which can be operated by means of a mechanically actuatable emergency stop switch (46) or key, for main and control circuits leading to the aggregates and the signalling elements, a power supply to which is guided through a first switch contact (56) of the emergency stop switch (46), and which triggers an emergency cut-off if the power supply is interrupted, whereby the first switch contact (56) is connected at its first terminal (52) through an overload fuse (54) to a first pole (24) of a voltage source and with its second terminal (58) to a power supply connecting terminai (28) of the emergency stop switch device (12), and whereby the emergency stop switch (46) has a second switch contact (64), the first terminal (66) of which is connected to a second pole (26) of the voltage source, and the second terminal (62) of which is connected to the second terminal (58) of the first switch contact (56), characterized in that the switch device is a remote control device, that the central control device (10) is connected through a multicore remote control cable (16) to a remote control unit (14), that the voltage source (24, 26) and the emergency stop switch device (12) are arranged in the central control device (10), whereas the emergency stop switch (46) is arranged in the remote control unit (14), that the first switch contact (56) of the emergency stop switch (46), which switch contact is designed as a break contact, is connected at its first terminal (52) through a first cable core (22') of the remote control cable (16) to the one pole (24) of the voltage source, and with its second terminal (58) through a second cable core (22") of the remote control cable (16) to the power supply connecting terminal (28) of the emergency stop switch device (12), that the second switch contact (64) designed as a maker contact is connected with its first terminal (66) through a third cable core (22"') of the remote control cable (16) to the second pole (26) of the voltage source, which second pole is designed as a ground pole, and with ist second terminal (62) within the remote control unit (14) to the second terminal (58) of the first switch contact (56), and that the first and the second switch contact (56, 64) are forcedly guided and react timely one after the other upon operation of the emergency stop switch (46).
  2. The switch device according to Claim 1,
    characterized in that the first and the second switch contact (56, 64) are combined in a changeover switch.
  3. A switch device comprising a central control device for controlling of aggregates and signalling elements, whereby the central control device (10) has an emergency stop switch device for main and control circuits leading to the aggregates and the signalling elements, which can be operated by means of a mechanically actuable emergency stop switch device, a power supply which is guided through a switch contact (56) of the emergency stop switch, and which triggers an emergency cut-off upon interruption of the power supply, whereby the switch contact (56) is connected at its first terminal (52) through an overload fuse (54) to the one pole (24) of a voltage source and with its second terminal (58) to a power supply connecting - terminal (28) of the Emergency stop switch device (12), characterized in that the switch device is a remote control device, that the central control device (10) is connected to a remote control unit (14) through a multicore remote control cable (16), that the voltage source (24, 26) and the emergency stop switch device (12) are arranged in the central control device (10), whereas the emergency stop switch (46) is arranged in the remote control unit (14), that the switch contact (56) of the emergency stop switch (46), which switch contact is designed as a break contact, is connected at its first terminal (58) through a first cable core (22') of the remote control cable (16) to the one pole (24) of the voltage source and with its second terminal (58) through a second cable core (22") of the remote control cable (16) to the power supply connecting terminal (28) of the emergency stop switch device (12), and that the first and/or second cable core (22', 22") has a shielding cover connected to a ground pole (26) of the voltage source.
  4. The switch device according to one of the Claims 1 to 3 used for the remote control of conveying, spraying and distributing machines for concrete and mortar.
EP95915170A 1994-04-13 1995-03-29 Remote control device especially for conveying, spraying and distributing machines for concrete and mortar Expired - Lifetime EP0755565B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4412635 1994-04-13
DE4412635A DE4412635A1 (en) 1994-04-13 1994-04-13 Remote control arrangement, in particular for conveying, spraying and distributing machines for concrete and mortar
PCT/EP1995/001176 WO1995028729A1 (en) 1994-04-13 1995-03-29 Remote control device especially for conveying, spraying and distributing machines for concrete and mortar

Publications (2)

Publication Number Publication Date
EP0755565A1 EP0755565A1 (en) 1997-01-29
EP0755565B1 true EP0755565B1 (en) 1998-09-30

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EP95915170A Expired - Lifetime EP0755565B1 (en) 1994-04-13 1995-03-29 Remote control device especially for conveying, spraying and distributing machines for concrete and mortar

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US (1) US5757088A (en)
EP (1) EP0755565B1 (en)
DE (2) DE4412635A1 (en)
ES (1) ES2122580T3 (en)
WO (1) WO1995028729A1 (en)

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Also Published As

Publication number Publication date
DE4412635A1 (en) 1995-10-19
DE59503787D1 (en) 1998-11-05
EP0755565A1 (en) 1997-01-29
ES2122580T3 (en) 1998-12-16
WO1995028729A1 (en) 1995-10-26
US5757088A (en) 1998-05-26

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