EP2372022A1 - Street construction machine - Google Patents

Street construction machine Download PDF

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Publication number
EP2372022A1
EP2372022A1 EP10003083A EP10003083A EP2372022A1 EP 2372022 A1 EP2372022 A1 EP 2372022A1 EP 10003083 A EP10003083 A EP 10003083A EP 10003083 A EP10003083 A EP 10003083A EP 2372022 A1 EP2372022 A1 EP 2372022A1
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EP
European Patent Office
Prior art keywords
construction machine
road construction
paver
voltage
standard
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.)
Granted
Application number
EP10003083A
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German (de)
French (fr)
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EP2372022B1 (en
Inventor
Michael Heindtel
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Joseph Voegele AG
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Joseph Voegele AG
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Publication date
Application filed by Joseph Voegele AG filed Critical Joseph Voegele AG
Priority to PL10003083T priority Critical patent/PL2372022T3/en
Priority to EP10003083.2A priority patent/EP2372022B1/en
Priority to JP2011059982A priority patent/JP5411185B2/en
Priority to CN201110065937.3A priority patent/CN102199910B/en
Priority to US13/051,396 priority patent/US8784003B2/en
Publication of EP2372022A1 publication Critical patent/EP2372022A1/en
Application granted granted Critical
Publication of EP2372022B1 publication Critical patent/EP2372022B1/en
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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/48—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for laying-down the materials and consolidating them, or finishing the surface, e.g. slip forms therefor, forming kerbs or gutters in a continuous operation in situ

Definitions

  • the invention relates to a road construction machine specified in the preamble of claim 1 Art.
  • standard sockets which are powered by the alternator with power.
  • standard electrical consumers can be connected, which rely on a standard mains voltage and at least substantially stable frequency, such as a hand drill, a high-pressure cleaner, a screwdriver, or hand lamps or power supplies for mobile phones, laptops and the like .
  • Such standard consumers are usually not required for the working operation of the road construction machine, but on the site in conjunction with the operation or cleaning cycles or maintenance cycles and the like.
  • the road construction machine Since the alternator is more or less directly driven by the internal combustion engine whose speed varies depending on the load condition, the frequency of the current supplied by the alternator also varies.
  • a frequency of about 50 Hz is achieved only at low engine speed, eg idling speed or raised idle speed, the alternator and the sockets, so that only in this narrow engine speed range common electrical standard consumers can be operated. If the engine speed is increased compared to this allowed for the standard consumer speed range, although usually the output voltage of the alternator stabilized, but the frequency increases in proportion to the speed. This would lead to damage in the electrical standard consumers. Therefore, it is known to enable the provided sockets only for the allowed frequency, but then turn off when the frequency is too low or too high. This means quite considerable technical effort for the activation and deactivation of standard sockets and has the fundamental disadvantage of being unable to operate such standard consumers when the internal combustion engine is not running at a predetermined low speed.
  • the invention has for its object to provide a road construction machine of the type mentioned, in which the given high electrical capacity of the alternator is also available for continuous or demand-dependent operation of electrical standard consumers regardless of the speed of the engine, i. the operation of "common" or standard consumers, which depend on at least a constant frequency of the voltage.
  • the stabilized power supply unit provides independent of the speed of the engine or the working speed of the alternator for the intended electrical consumer electrical connection means a respective appropriate mains voltage permanently with stable frequency. It can thus all current electrical consumers are permanently or frequently or in each case operated as needed, which are reliant on a specific line voltage and, above all, a largely stable constant frequency.
  • Such standard electrical consumers are, for example, power tools, lighting equipment, gas discharge light balloons, coolers, power supplies for mobile phones or laptops, or the like .. From the operation of this standard electrical consumer is not inconvenient load on the 24-volt electrical system. No exotic connectors are needed. The large power reserve of the alternator is better used in a universal way.
  • the additional technical effort for the power supply unit can be equated to the technical outlay for frequency-dependent disconnectable connection options or for frequency-independently operable electrical consumers.
  • operating personnel at and around the road construction machine at the construction site may, if necessary, apply cost-effective facilities at will and as if a standard power grid were present.
  • the stabilized power supply unit has at least one universal converter circuit with which an alternating voltage generated by the three-phase generator with varying frequency, which possibly even varies, so to speak in an intermediate circuit, and the required mains voltage with stable frequency can be generated from the intermediate voltage.
  • Stable frequency is here understood to mean a frequency which may not yet be present when the internal combustion engine is started, but which occurs at least when the internal combustion engine is running at its idling speed or at a low speed level customary in such road construction machines. The frequency is then kept stable up to the maximum speed or the full load state corresponding speed.
  • the universal converter circuit can be set to the respectively desired mains voltage or frequency.
  • the mains voltage is chosen, for example, depending on country-specific requirements or the electrical standard consumers to be used with about 110 volts, about 220 to 240 volts or 400 volts, with a frequency of about 50 Hz or about 60 Hz.
  • connection device has at least one clamp and / or one standard socket, preferably a schuko socket. Since the correct frequency is constantly ensured via the stabilized power supply unit, a standard electrical consumer can also be permanently permanently connected to a terminal, e.g. a lighting system, or the standard socket, in particular the Schuko socket, for connecting the respectively required electrical standard consumer can be used at any time and regardless of the speed of the running internal combustion engine.
  • a standard electrical consumer can also be permanently permanently connected to a terminal, e.g. a lighting system, or the standard socket, in particular the Schuko socket, for connecting the respectively required electrical standard consumer can be used at any time and regardless of the speed of the running internal combustion engine.
  • At least one terminal battery with multiple connection options and / or a standard socket battery, with several parallel usable Schuko sockets.
  • the power supply unit can be connected directly to the alternator or via an intervening protection system. Furthermore, it is possible to protect the power supply unit separately and connect it to a supply line of a further electrical load of the road paver or the road construction machine, or to an already secured supply line to such Consumer. This reduces the circuit complexity in the road construction machine with high reliability because the power supply unit can be placed at a suitable location and interconnected.
  • the road construction machine is a paver or a paver for paver and are arranged distributed on the paver or feeder and / or on a screed paver several connection devices, which are supplied via a central power supply unit or multiple power supply units with mains voltage and constant frequency.
  • connection devices which are supplied via a central power supply unit or multiple power supply units with mains voltage and constant frequency.
  • At least one lighting system preferably a paver and / or construction site lighting system hardwired connected to the connection device, said lighting system is just equipped with standard consumers, which are reliant on a stable frequency and a certain mains voltage.
  • Fig. 1 schematically shows a road construction machine F, in the case of execution a paver for installing ceiling layers of bituminous or concrete inlay material.
  • the road construction machine F could also be a feeder used to load at least one paver and of a similar construction to a paver.
  • other road construction machines could be included in the invention.
  • the paver as the construction machine F has a base 1 with a chassis 2 (crawler chassis, as shown, or wheels chassis, not shown).
  • a driver's cab 3 is arranged, in which a combustion engine 4, for example a diesel engine, and a cooling system K are located as the primary drive unit P.
  • a Gutbunker 5 is arranged, from which a material conveying device 6, eg at least one scraper conveyor belt or conveyor screw extends to a material distribution device 7 arranged at the rear end, for example to one or more distributor screws.
  • boom 8 On substructure 1 are laterally articulated boom 8, where the screed B is mounted, in which u.a.
  • compression units ramming devices 10, optionally pressing elements 11, vibration devices 13, at least one electric heater 18, and width adjustment 9 may be arranged.
  • the booms 8 are liftable via rear lift cylinders 14, and at their linkages e.g. for leveling the screed B by means of leveling cylinders 15 adjustable.
  • a drive unit for example, on each side of a drive unit 16, e.g. a hydrostatic drive unit, provided. Side walls of the bunker 5 can be adjusted with adjusting cylinders 17.
  • a control console 51 is housed together with an unspecified highlighted control for the individual secondary drives of the paver F.
  • the internal combustion engine 4 drives a three-phase generator 19 via a pump distributor gearbox 12.
  • the pump distributor gearbox 12 can also drive a plurality of hydraulic pumps 31, which serve to supply hydrostatic secondary drives in the road paver F.
  • distributed terminal devices 24 for electrical consumers (not shown) on the paver F and / or the screed B are provided, namely for standard electrical consumers or common consumers operating in a certain network voltage and require a stable frequency.
  • the connecting device 24 or the connecting devices 24 are from the alternator 19 (see Fig. 2 ) electrically supplied with a selectable mains voltage and a permanently at least substantially stable or constant frequency.
  • Fig. 2 illustrates schematically how the internal combustion engine 4, for example the diesel engine, via a drive connection (for example, the pump distributor gear 12 of Fig. 1 ) drives the three-phase generator 19 so that the working speed of the alternator 19 always either corresponds to the speed of the engine or is proportional to this.
  • the electric heater 18 is permanently connected, in which electrical heating elements (not shown) may be provided, which may optionally be frequency independently operable.
  • the frequency generated by the alternator 19 varies, for example, between about 40 Hz to 140 Hz.
  • the tension can vary.
  • a supply line 20 leads to a stabilized power supply unit 21 (in the paver F, at least one such stabilized power supply unit 21 is more suitable
  • a converter circuit 22 which generates an intermediate voltage from the AC voltage provided by the three-phase generator 19 (voltage level and frequency are insignificant or variable), eg in a DC link, eg with bridge rectifiers or a regulated switching power supply. From an intermediate voltage, a stable mains voltage, for example, according to the local area network, with largely constant voltage value and largely constant frequency generated.
  • a plurality of terminals 26 or standard sockets 25, preferably Schuko sockets connected in parallel via a connecting line 23 in the connection device 24, for example. It may even be provided in the connection device 24 in each case a terminal battery and / or standard socket battery.
  • a lighting system 27 hardwired connected which may be an illumination system of the paver and / or a construction site. For example, this is a 230 volt lighting system, or are multiple gas discharge light balloons, or the like hardwired connected.
  • a cool box 28 or a power tool such as a screwdriver, a high-pressure cleaner or a drill are connected, which are used for secondary work on or in the field of paver.
  • a power supply unit 29 for a mobile telephone or a laptop 30 is connected to another standard socket.
  • the mains voltage may be about 110 volts, or 220 to 240 volts or even 400 volts, as needed, with the frequency being about 50 Hz or 60 Hz and being kept permanently stable.
  • connection device 24 is permanently unlocked, independently from the rotational speed of the internal combustion engine, and is optionally deactivated only during the start of the internal combustion engine 4.
  • connection device 24 or the stabilized voltage supply unit 21 may have its own safety system or be connected to a backup system provided at the three-phase generator 19, or to an optionally secured supply line to an electrical load of the paver, for example to the supply line to the electric heater 18th

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Machines (AREA)
  • Control Of Eletrric Generators (AREA)

Abstract

The road finisher (F) has a stabilized voltage supply unit that comprise universal conversion circuit including a bridge rectifier or an intermediate circuit containing a controlled power supply for generating an intermediate voltage and a standard mains voltage. The voltage is generated with a permanently stable frequency from intermediate voltage connected between the connection unit (24) and the three-phase generator (19). The standard mains voltage is provided at the connection unit which is connected through a connection line to universal conversion circuit.

Description

Die Erfindung betrifft eine Straßenbaumaschine der im Oberbegriff des Anspruchs 1 angegebenen Art.The invention relates to a road construction machine specified in the preamble of claim 1 Art.

Bei Straßenbaumaschinen wie Straßenfertigern ist es in der Praxis bekannt, Normsteckdosen vorzusehen, die vom Drehstromgenerator mit Strom versorgt werden. An diesen Normsteckdosen können elektrische Normverbraucher angeschlossen werden, die auf eine Standard-Netzspannung und zumindest im Wesentlichen stabile Frequenz angewiesen sind, z.B. eine Handbohrmaschine, ein Hochdruckreiniger, ein Schrauber, oder auch Handlampen bzw. Netzteile für Mobiltelefone, Laptops und dgl.. Solche Normverbraucher werden in der Regel nicht für den Arbeitsbetrieb der Straßenbaumaschine benötigt, sondern auf der Baustelle in Verbindung mit dem Betrieb oder Reinigungszyklen oder Wartungszyklen und dgl. der Straßenbaumaschine. Da der Drehstromgenerator mehr oder weniger direkt vom Verbrennungsmotor angetrieben wird, dessen Drehzahl abhängig vom Lastzustand variiert, variiert auch die Frequenz des vom Drehstromgenerator gelieferten Stroms. Im Regelfall wird nur bei niedriger Motordrehzahl, z.B. Leerlaufdrehzahl oder angehobener Leerlaufdrehzahl, am Drehstromgenerator und den Steckdosen eine Frequenz von etwa 50 Hz erreicht, so dass nur in diesem engen Motordrehzahlbereich gängige elektrische Normverbraucher betrieben werden können. Wird die Motordrehzahl gegenüber diesem für die Normverbraucher zulässigen Drehzahlbereich erhöht, wird zwar im Regelfall die Ausgangsspannung des Drehstromgenerators stabilisiert, steigt jedoch die Frequenz proportional zur Drehzahl an. Dies würde zu Schäden in den elektrischen Normverbrauchern führen. Deshalb ist es bekannt, die vorgesehenen Steckdosen nur für die zulässige Frequenz freizuschalten, jedoch dann abzuschalten, wenn die Frequenz zu niedrig oder zu hoch wird. Dies bedeutet durchaus nennenswerten technischen Aufwand für die Aktivierung und Deaktivierung der Normsteckdosen und hat den grundsätzlichen Nachteil, solche Normverbraucher dann nicht mehr betreiben zu können, wenn der Verbrennungsmotor nicht mit einer vorbestimmten niedrigen Drehzahl läuft. Im normalen Arbeitsbetrieb läuft der Verbrennungsmotor bei Volllast meist mit einer zu hohen Drehzahl für elektrische Normverbraucher, so dass diese dann nicht benutzt werden können. Es besteht jedoch erheblicher Bedarf, bestimmte elektrische Normverbraucher permanent an der Straßenbaumaschine betreiben zu können, und nicht nur abhängig in einem niedrigen Lastzustand des Verbrennungsmotors. Diese Forderung lässt sich zwar erfüllen, in dem keine "gängigen" elektrischen Normverbraucher angeschlossen werden, sondern nur spezielle Verbraucher, die hohe oder variierende Frequenzen vertragen, wobei auch spezielle Steckverbinder benutzt werden. Dies bedeutet jedoch einen erheblichen Kostenmehraufwand. Alternativ ist es auch möglich, das meist vorgesehene 24-Volt-Bordnetz der Straßenbaumaschine, beispielsweise gespeist aus einer Batterie, für manche elektrische Normverbraucher zu benutzen. Dann wird jedoch das 24-Volt-Bordnetz durch ständig oder häufig eingeschaltete elektrische Normverbraucher stark belastet.In road construction machinery such as road pavers, it is known in practice to provide standard sockets, which are powered by the alternator with power. At this standard sockets standard electrical consumers can be connected, which rely on a standard mains voltage and at least substantially stable frequency, such as a hand drill, a high-pressure cleaner, a screwdriver, or hand lamps or power supplies for mobile phones, laptops and the like .. Such standard consumers are usually not required for the working operation of the road construction machine, but on the site in conjunction with the operation or cleaning cycles or maintenance cycles and the like. The road construction machine. Since the alternator is more or less directly driven by the internal combustion engine whose speed varies depending on the load condition, the frequency of the current supplied by the alternator also varies. As a rule, a frequency of about 50 Hz is achieved only at low engine speed, eg idling speed or raised idle speed, the alternator and the sockets, so that only in this narrow engine speed range common electrical standard consumers can be operated. If the engine speed is increased compared to this allowed for the standard consumer speed range, although usually the output voltage of the alternator stabilized, but the frequency increases in proportion to the speed. This would lead to damage in the electrical standard consumers. Therefore, it is known to enable the provided sockets only for the allowed frequency, but then turn off when the frequency is too low or too high. This means quite considerable technical effort for the activation and deactivation of standard sockets and has the fundamental disadvantage of being unable to operate such standard consumers when the internal combustion engine is not running at a predetermined low speed. In normal working mode, the combustion engine usually runs at full load at too high a speed for standard electrical consumers, so that they can not be used. However, there is a considerable need to be able to permanently operate certain standard electrical consumers on the road construction machine, and not only dependent on a low load condition of the internal combustion engine. This requirement leaves Although meet in which no "standard" electrical standard consumers are connected, but only special consumers who tolerate high or varying frequencies, with special connectors are used. However, this means a significant cost overhead. Alternatively, it is also possible to use the most-provided 24-volt electrical system of the road construction machine, for example fed from a battery, for some standard electrical consumers. Then, however, the 24-volt electrical system is heavily loaded by constantly or frequently switched on electrical standard consumers.

Der Erfindung liegt die Aufgabe zugrunde, eine Straßenbaumaschine der eingangs genannten Art anzugeben, bei der das gegebene hohe elektrische Leistungsvermögen des Drehstromgenerators auch zum ständigen oder bedarfsabhängigen Betrieb elektrischer Normverbraucher unabhängig von der Drehzahl des Verbrennungsmotors nutzbar ist, d.h. dem Betrieb von "gängigen" oder Normverbrauchern, die zumindest auf konstante Frequenz der Spannung angewiesen sind.The invention has for its object to provide a road construction machine of the type mentioned, in which the given high electrical capacity of the alternator is also available for continuous or demand-dependent operation of electrical standard consumers regardless of the speed of the engine, i. the operation of "common" or standard consumers, which depend on at least a constant frequency of the voltage.

Die gestellte Aufgabe wird mit den Merkmalen des Anspruchs 1 gelöst.The stated object is achieved with the features of claim 1.

Die stabilisierte Spannungsversorgungseinheit stellt unabhängig von der Drehzahl des Verbrennungsmotors bzw. der Arbeitsdrehzahl des Drehstromgenerators für die für elektrische Normverbraucher vorgesehene Anschlusseinrichtung eine jeweils zweckmäßige Netzspannung permanent mit stabiler Frequenz bereit. Es können somit alle gängigen elektrischen Verbraucher permanent oder häufig oder jeweils bei Bedarf betrieben werden, die auf eine bestimmte Netzspannung und vor allem eine weitgehend stabile konstante Frequenz angewiesen sind. Solche elektrischen Normverbraucher sind beispielsweise Elektrowerkzeuge, Beleuchtungseinrichtungen, Gasentladungs-Lichtballone, Kühlboxen, Netzteile für Mobiltelefone oder Laptops, oder dgl.. Aus dem Betrieb dieser elektrischen Normverbraucher entsteht keine unzweckmäßige Belastung des 24-Volt-Bordnetzes. Es werden keine exotischen Steckverbinder benötigt. Die große Leistungsreserve des Drehstromgenerators wird auf universelle Weise besser genutzt. Der technische Mehraufwand für die Spannungsversorgungseinheit ist dem technischen Aufwand für frequenzabhängig abschaltbare Anschlussmöglichkeiten oder für frequenzunabhängig betreibbare, elektrische Verbraucher gleichzusetzen. Jedoch kann Bedienungspersonal an und im Umkreis der Straßenbaumaschine auf der Baustelle bei Bedarf kostengünstige Einrichtungen nach Belieben und so anwenden, als wäre ein Standardstromnetz vorhanden.The stabilized power supply unit provides independent of the speed of the engine or the working speed of the alternator for the intended electrical consumer electrical connection means a respective appropriate mains voltage permanently with stable frequency. It can thus all current electrical consumers are permanently or frequently or in each case operated as needed, which are reliant on a specific line voltage and, above all, a largely stable constant frequency. Such standard electrical consumers are, for example, power tools, lighting equipment, gas discharge light balloons, coolers, power supplies for mobile phones or laptops, or the like .. From the operation of this standard electrical consumer is not inconvenient load on the 24-volt electrical system. No exotic connectors are needed. The large power reserve of the alternator is better used in a universal way. The additional technical effort for the power supply unit can be equated to the technical outlay for frequency-dependent disconnectable connection options or for frequency-independently operable electrical consumers. However, operating personnel at and around the road construction machine at the construction site may, if necessary, apply cost-effective facilities at will and as if a standard power grid were present.

Zweckmäßig weist die stabilisierte Spannungsversorgungseinheit wenigstens eine Universal-Umrichterschaltung auf, mit der aus vom Drehstromgenerator mit variierender Frequenz erzeugter Wechselspannung, die gegebenenfalls sogar variiert, sozusagen in einem Zwischenkreis, eine Zwischenspannung, und aus der Zwischenspannung die benötigte Netzspannung mit stabiler Frequenz erzeugbar ist. Unter stabiler Frequenz wird hierbei eine Frequenz verstanden, die gegebenenfalls beim Starten des Verbrennungsmotors noch nicht gegeben ist, aber sich zumindest dann einstellt, wenn der Verbrennungsmotor an seiner Leerlaufdrehzahl oder einem bei solchen Straßenbaumaschinen üblichen niedrigen Drehzahlniveau läuft. Die Frequenz wird dann bis zur Höchstdrehzahl oder dem Volllastzustand entsprechenden Drehzahl stabil gehalten.Expediently, the stabilized power supply unit has at least one universal converter circuit with which an alternating voltage generated by the three-phase generator with varying frequency, which possibly even varies, so to speak in an intermediate circuit, and the required mains voltage with stable frequency can be generated from the intermediate voltage. Stable frequency is here understood to mean a frequency which may not yet be present when the internal combustion engine is started, but which occurs at least when the internal combustion engine is running at its idling speed or at a low speed level customary in such road construction machines. The frequency is then kept stable up to the maximum speed or the full load state corresponding speed.

Die Universal-Umrichterschaltung kann auf die jeweils gewünschte Netzspannung bzw. Frequenz eingestellt sein. Die Netzspannung wird beispielsweise abhängig von länderspezifischen Anforderungen oder den einzusetzenden elektrischen Normverbrauchern mit etwa 110 Volt, etwa 220 bis 240 Volt oder 400 Volt gewählt, mit einer Frequenz von etwa 50 Hz oder etwa 60 Hz.The universal converter circuit can be set to the respectively desired mains voltage or frequency. The mains voltage is chosen, for example, depending on country-specific requirements or the electrical standard consumers to be used with about 110 volts, about 220 to 240 volts or 400 volts, with a frequency of about 50 Hz or about 60 Hz.

Bei einer zweckmäßigen Ausführungsform weist die Anschlusseinrichtung wenigstens eine Klemme und/oder eine Normsteckdose, vorzugsweise eine Schuko-Steckdose, auf. Da über die stabilisierte Verspannungsversorgungseinheit konstant die richtige Frequenz sichergestellt bleibt, kann an einer Klemme ein elektrischer Normverbraucher auch permanent fest angeschlossen sein, z.B. ein Beleuchtungssystem, bzw. kann die Normsteckdose, insbesondere die Schuko-Steckdose, zum Anschließen des jeweils benötigten elektrischen Normverbrauchers jederzeit genutzt werden und unabhängig von der Drehzahl des laufenden Verbrennungsmotors.In an expedient embodiment, the connection device has at least one clamp and / or one standard socket, preferably a schuko socket. Since the correct frequency is constantly ensured via the stabilized power supply unit, a standard electrical consumer can also be permanently permanently connected to a terminal, e.g. a lighting system, or the standard socket, in particular the Schuko socket, for connecting the respectively required electrical standard consumer can be used at any time and regardless of the speed of the running internal combustion engine.

Um mehrere elektrische Normverbraucher parallel einsetzen zu können, kann zweckmäßig wenigstens eine Klemmenbatterie mit mehreren Anschlussmöglichkeiten und/oder eine Normsteckdosen-Batterie, mit mehreren parallel nutzbaren Schuko-Steckdosen, vorgesehen sein.In order to use several standard electrical consumers in parallel, can advantageously be provided at least one terminal battery with multiple connection options and / or a standard socket battery, with several parallel usable Schuko sockets.

Die Spannungsversorgungseinheit kann direkt an den Drehstromgenerator angeschlossen werden, oder über ein dazwischengeschaltetes Absicherungssystem. Ferner ist es möglich, die Spannungsversorgungseinheit separat abzusichern und an eine Versorgungsleitung eines weiteren elektrischen Verbrauchers des Straßenfertigers oder der Straßenbaumaschine anzuschließen, oder an eine bereits abgesicherte Versorgungsleitung zu einem solchen Verbraucher. Dies reduziert bei hoher Betriebssicherheit den schaltungstechnischen Aufwand in der Straßenbaumaschine, da die Spannungsversorgungseinheit an geeigneter Stelle platziert und verschaltet werden kann.The power supply unit can be connected directly to the alternator or via an intervening protection system. Furthermore, it is possible to protect the power supply unit separately and connect it to a supply line of a further electrical load of the road paver or the road construction machine, or to an already secured supply line to such Consumer. This reduces the circuit complexity in the road construction machine with high reliability because the power supply unit can be placed at a suitable location and interconnected.

Bei einer zweckmäßigen Ausführungsform ist die Straßenbaumaschine ein Straßenfertiger oder ein Beschicker für Straßenfertiger und sind am Straßenfertiger oder Beschicker und/oder an einer Einbaubohle des Straßenfertigers mehrere Anschlusseinrichtungen verteilt angeordnet, die über eine zentrale Spannungsversorgungseinheit oder auch mehrere Spannungsversorgungseinheiten mit Netzspannung und konstanter Frequenz versorgt werden. Auf diese Weise lassen sich elektrische Verbraucher wahlweise an verschiedenen Stellen der Straßenbaumaschine anschließen und optimaler einsetzen.In an expedient embodiment, the road construction machine is a paver or a paver for paver and are arranged distributed on the paver or feeder and / or on a screed paver several connection devices, which are supplied via a central power supply unit or multiple power supply units with mains voltage and constant frequency. In this way, electrical consumers can optionally connect at different points of the road construction machine and use it more optimally.

Bei einer Ausführungsform ist wenigstens ein Beleuchtungssystem, vorzugsweise ein Straßenfertiger- bzw. Beschicker- und/oder Baustellen-Beleuchtungssystem festverdrahtet an die Anschlusseinrichtung angeschlossen, wobei dieses Beleuchtungssystem eben mit Normverbrauchern bestückt ist, die auf eine stabile Frequenz und eine bestimmte Netzspannung angewiesen sind.In one embodiment, at least one lighting system, preferably a paver and / or construction site lighting system hardwired connected to the connection device, said lighting system is just equipped with standard consumers, which are reliant on a stable frequency and a certain mains voltage.

Anhand der Zeichnungen wird der Erfindungsgegenstand näher erläutert. Es zeigen:

Fig. 1
eine schematische Seitenansicht einer Baumaschine, ausgebildet als Straßenfertiger, und
Fig. 2
ein schematisches Blockschaltbild zur Verdeutlichung einer Anschlusseinrichtung für elektrische Normverbraucher.
With reference to the drawings, the subject invention is explained in detail. Show it:
Fig. 1
a schematic side view of a construction machine, designed as a paver, and
Fig. 2
a schematic block diagram for illustrating a connection device for standard electrical consumers.

Fig. 1 zeigt schematisch eine Straßenbaumaschine F, im Ausführungsfall einen Straßenfertiger zum Einbauen von Deckenschichten aus bituminösem oder Betoneinbaumaterial. Alternativ könnte die Straßenbaumaschine F auch ein Beschicker sein, der zum Beschicken wenigstens eines Straßenfertigers eingesetzt und von ähnlicher Bauart wie ein Straßenfertiger ist. Ferner könnten weitere Straßenbaumaschinen von der Erfindung mitumfasst sein. Fig. 1 schematically shows a road construction machine F, in the case of execution a paver for installing ceiling layers of bituminous or concrete inlay material. Alternatively, the road construction machine F could also be a feeder used to load at least one paver and of a similar construction to a paver. Further, other road construction machines could be included in the invention.

Der Straßenfertiger als die Baumaschine F weist einen Unterbau 1 mit einem Fahrwerk 2 (Raupenfahrwerk, wie gezeigt, oder Räderfahrwerk, nicht gezeigt) auf. Auf dem Unterbau 1 ist ein Führerstand 3 angeordnet, bei dem sich als Primärantriebsaggregat P ein Verbrennungsmotor 4, z.B. ein Dieselmotor, und ein Kühlsystem K befinden. Im Vorderteil des Unterbaus ist ein Gutbunker 5 angeordnet, von dem sich eine Materialfördereinrichtung 6, z.B. wenigstens ein Kratzerförderband oder eine Förderschnecke, zu einer am hinteren Ende angeordneten Materialverteileinrichtung 7 erstreckt, z.B. zu einer oder mehreren Verteilerschnecken.The paver as the construction machine F has a base 1 with a chassis 2 (crawler chassis, as shown, or wheels chassis, not shown). On the substructure 1, a driver's cab 3 is arranged, in which a combustion engine 4, for example a diesel engine, and a cooling system K are located as the primary drive unit P. In the front part of the substructure a Gutbunker 5 is arranged, from which a material conveying device 6, eg at least one scraper conveyor belt or conveyor screw extends to a material distribution device 7 arranged at the rear end, for example to one or more distributor screws.

Am Unterbau 1 sind seitlich Ausleger 8 angelenkt, an denen die Einbaubohle B montiert ist, in welcher u.a. neben nicht näher hervorgehobenen Verdichtungsaggregaten Stampfereinrichtungen 10, gegebenenfalls Presselemente 11, Vibrationseinrichtungen 13, wenigstens eine elektrische Heizeinrichtung 18, und Breitenverstelleinrichtungen 9 angeordnet sein können. Die Ausleger 8 sind über hintere Hubzylinder 14 anhebbar, und bei ihren Anlenkungen z.B. zur Nivellierung der Einbaubohle B mittels Nivellierzylindern 15 verstellbar. Im Fahrantrieb 2 ist beispielsweise an jeder Seite ein Antriebsaggregat 16, z.B. ein hydrostatisches Antriebsaggregat, vorgesehen. Seitenwände des Bunkers 5 können mit Verstellzylindern 17 verstellt werden. Im Führerstand 3 ist eine Steuerkonsole 51 zusammen mit einer nicht näher hervorgehobenen Steuerung für die einzelnen Sekundärantriebe des Straßenfertigers F untergebracht.On substructure 1 are laterally articulated boom 8, where the screed B is mounted, in which u.a. In addition to not highlighted in detail compression units ramming devices 10, optionally pressing elements 11, vibration devices 13, at least one electric heater 18, and width adjustment 9 may be arranged. The booms 8 are liftable via rear lift cylinders 14, and at their linkages e.g. for leveling the screed B by means of leveling cylinders 15 adjustable. In the traction drive 2, for example, on each side of a drive unit 16, e.g. a hydrostatic drive unit, provided. Side walls of the bunker 5 can be adjusted with adjusting cylinders 17. In the cab 3 a control console 51 is housed together with an unspecified highlighted control for the individual secondary drives of the paver F.

Der Verbrennungsmotor 4 treibt beispielsweise über ein Pumpenverteilergetriebe 12 einen Drehstromgenerator 19. Vom Pumpenverteilergetriebe 12 können auch mehrere Hydraulikpumpen 31 angetrieben werden, die zur Versorgung hydrostatischer Sekundärantriebe im Straßenfertiger F dienen. Ferner sind, entweder an einer zentralen Stelle oder, wie angedeutet, verteilt Anschlusseinrichtungen 24 für elektrische Normverbraucher (nicht gezeigt) am Straßenfertiger F und/oder der Einbaubohle B vorgesehen, und zwar für elektrische Normverbraucher oder gängige Verbraucher, die im Betrieb einer bestimmten Netzspannung und einer stabilen Frequenz bedürfen. Die Anschlusseinrichtung 24 bzw. die Anschlusseinrichtungen 24 werden vom Drehstromgenerator 19 (siehe Fig. 2) elektrisch mit einer wählbaren Netzspannung und einer permanent zumindest im Wesentlichen stabilen oder konstanten Frequenz gespeist.The internal combustion engine 4, for example, drives a three-phase generator 19 via a pump distributor gearbox 12. The pump distributor gearbox 12 can also drive a plurality of hydraulic pumps 31, which serve to supply hydrostatic secondary drives in the road paver F. Further, either at a central location or, as indicated, distributed terminal devices 24 for electrical consumers (not shown) on the paver F and / or the screed B are provided, namely for standard electrical consumers or common consumers operating in a certain network voltage and require a stable frequency. The connecting device 24 or the connecting devices 24 are from the alternator 19 (see Fig. 2 ) electrically supplied with a selectable mains voltage and a permanently at least substantially stable or constant frequency.

Fig. 2 verdeutlicht schematisch, wie der Verbrennungsmotor 4, z.B. der Dieselmotor, über eine Antriebsverbindung (beispielsweise das Pumpenverteilergetriebe 12 von Fig. 1) den Drehstromgenerator 19 so antreibt, dass die Arbeitsdrehzahl des Drehstromgenerators 19 stets entweder der Drehzahl des Verbrennungsmotors entspricht oder zu dieser proportional ist. An den Drehstromgenerator 19 ist beispielsweise die elektrische Heizeinrichtung 18 permanent angeschlossen, in welcher elektrische Heizstäbe (nicht gezeigt) vorgesehen sein können, die gegebenenfalls frequenzunabhängig betreibbar sein können. Die vom Drehstromgenerator 19 erzeugte Frequenz variiert z.B. zwischen etwa 40 Hz bis 140 Hz. Auch die Spannung kann dabei variieren. Beispielsweise über einen vorgesehenen CAN-Bus ist eine Spannungsabsenkung möglich. Ferner führt vom Drehstromgenerator 19 eine Versorgungsleitung 20 zu einer stabilisierten Spannungsversorgungseinheit 21 (im Straßenfertiger F ist zumindest eine solche stabilisierte Spannungsversorgungseinheit 21 an geeigneter Fig. 2 illustrates schematically how the internal combustion engine 4, for example the diesel engine, via a drive connection (for example, the pump distributor gear 12 of Fig. 1 ) drives the three-phase generator 19 so that the working speed of the alternator 19 always either corresponds to the speed of the engine or is proportional to this. To the three-phase generator 19, for example, the electric heater 18 is permanently connected, in which electrical heating elements (not shown) may be provided, which may optionally be frequency independently operable. The frequency generated by the alternator 19 varies, for example, between about 40 Hz to 140 Hz. Also the tension can vary. For example, via a designated CAN bus, a voltage reduction is possible. Furthermore, from the three-phase generator 19, a supply line 20 leads to a stabilized power supply unit 21 (in the paver F, at least one such stabilized power supply unit 21 is more suitable

Stelle installiert), die eine Umrichterschaltung 22 aufweist, welche aus der vom Drehstromgenerator 19 bereitgestellten Wechselspannung (Spannungshöhe und Frequenz sind unerheblich bzw. variabel) eine Zwischenspannung generiert, z.B. in einem Zwischenkreis, z.B. mit Brückengleichrichtern oder einem geregelten Schaltnetzteil. Aus einer Zwischenspannung wird eine stabile Netzspannung, beispielsweise dem lokalen Ortsnetz entsprechend, mit weitestgehend konstantem Spannungswert und weitestgehend konstanter Frequenz, erzeugt. An die stabilisierte Spannungsversorgungseinheit 21 sind beispielsweise über eine Anschlussleitung 23 in der Anschlusseinrichtung 24 mehrere Klemmen 26 oder Normsteckdosen 25, vorzugsweise Schuko-Steckdosen, parallel angeschlossen. Es kann in der Anschlusseinrichtung 24 sogar jeweils eine Klemmenbatterie und/oder Normsteckdosen-Batterie vorgesehen sein. An die in Fig. 2 gezeigte Klemme 26 ist beispielsweise als elektrischer Normverbraucher ein Beleuchtungssystem 27 festverdrahtet angeschlossen, das ein Beleuchtungssystem des Straßenfertigers und/oder einer Baustelle sein kann. Beispielsweise ist dies ein 230 Volt Beleuchtungssystem, oder sind mehrere Gasentladungs-Lichtballone, oder dgl. festverdrahtet angeschlossen. An die Normsteckdosen 25 sind beispielsweise eine Kühlbox 28 oder ein Elektrowerkzeug wie ein Schrauber, ein Hochdruckreiniger oder eine Bohrmaschine angeschlossen, die für sekundäre Arbeiten am oder im Bereich des Straßenfertigers benutzt werden. An eine weitere Normsteckdose ist als Beispiel eines elektrischen Normverbrauchers ein Netzteil 29 für ein Mobiltelefon oder ein Laptop 30 angesteckt.Installed)), which has a converter circuit 22 which generates an intermediate voltage from the AC voltage provided by the three-phase generator 19 (voltage level and frequency are insignificant or variable), eg in a DC link, eg with bridge rectifiers or a regulated switching power supply. From an intermediate voltage, a stable mains voltage, for example, according to the local area network, with largely constant voltage value and largely constant frequency generated. To the stabilized power supply unit 21, a plurality of terminals 26 or standard sockets 25, preferably Schuko sockets, connected in parallel via a connecting line 23 in the connection device 24, for example. It may even be provided in the connection device 24 in each case a terminal battery and / or standard socket battery. To the in Fig. 2 shown terminal 26, for example, as a standard electrical consumer, a lighting system 27 hardwired connected, which may be an illumination system of the paver and / or a construction site. For example, this is a 230 volt lighting system, or are multiple gas discharge light balloons, or the like hardwired connected. To the standard sockets 25, for example, a cool box 28 or a power tool such as a screwdriver, a high-pressure cleaner or a drill are connected, which are used for secondary work on or in the field of paver. As an example of an electrical standard consumer, a power supply unit 29 for a mobile telephone or a laptop 30 is connected to another standard socket.

Die Netzspannung kann etwa 110 Volt, oder 220 bis 240 Volt oder auch 400 Volt betragen, je nach Bedarf, wobei die Frequenz bei etwa 50 Hz oder bei 60 Hz liegt und permanent stabil gehalten wird.The mains voltage may be about 110 volts, or 220 to 240 volts or even 400 volts, as needed, with the frequency being about 50 Hz or 60 Hz and being kept permanently stable.

Im Straßenfertiger als Beispiel der Straßenbaumaschine F in Fig. 1 ist auch ein 24-Volt-Bordnetz Z angedeutet, das aus einer Batterie A gespeist wird, die wiederum vom Drehstromgenerator 19 oder alternativ von einer nicht gezeigten Lichtmaschine über einen Regler geladen wird. Anstelle eines oder mehrerer Mobiltelefone könnte auch ein Laptop oder dgl. angeschlossen werden. Die Anschlusseinrichtung 24 ist permanent freigeschaltet, unabhängig von der Drehzahl des Verbrennungsmotors, und wird gegebenenfalls nur während des Starts des Verbrennungsmotors 4 deaktiviert.In the road paver as an example of the road construction machine F in Fig. 1 is also a 24-volt electrical system Z indicated, which is fed from a battery A, which in turn is charged by the alternator 19 or alternatively by an alternator, not shown via a controller. Instead of one or more mobile phones, a laptop or the like could be connected. The connection device 24 is permanently unlocked, independently from the rotational speed of the internal combustion engine, and is optionally deactivated only during the start of the internal combustion engine 4.

Die Anschlusseinrichtung 24 bzw. die stabilisierte Spannungsversorgungseinheit 21 kann ein eigenes Sicherungssystem aufweisen oder an ein beim Drehstromgenerator 19 vorgesehenes Sicherungssystem angeschlossen sein, oder auch an eine, gegebenenfalls abgesicherte, Versorgungsleitung zu einem elektrischen Verbraucher des Straßenfertigers, beispielsweise an die Versorgungsleitung zur elektrischen Heizeinrichtung 18.The connection device 24 or the stabilized voltage supply unit 21 may have its own safety system or be connected to a backup system provided at the three-phase generator 19, or to an optionally secured supply line to an electrical load of the paver, for example to the supply line to the electric heater 18th

Claims (8)

Straßenbaumaschine (F), insbesondere Straßenfertiger oder Beschicker für Straßenfertiger, mit einem Primärantriebsaggregat (P), das einen wenigstens einen Drehstromgenerator (19) treibenden Verbrennungsmotor (4) umfasst, und mit wenigstens einer Anschlusseinrichtung (24) für wenigstens einen handelsüblichen gängigen Wechselstromverbraucher (28, 29), dadurch gekennzeichnet, dass zwischen der Anschlusseinrichtung (24) und dem Drehstromgenerator (19) wenigstens eine stabilisierte Spannungsversorgungseinheit (21) zwischengeschaltet ist, mit der unabhängig von der Drehzahl des den Drehstromgenerator (19) treibenden Verbrennungsmotors (4) an der Anschlusseinrichtung (24) Standard-Netzspannung mit permanent zumindest im Wesentlichen stabiler Frequenz bereitstellbar ist.Road construction machine (F), in particular road paver or paver for paver, with a primary drive unit (P) comprising an internal combustion engine (4) driving at least one three-phase generator (19), and with at least one connection device (24) for at least one commercial common AC consumer (28 , 29), characterized in that between the connection device (24) and the three-phase generator (19) at least one stabilized voltage supply unit (21) is interposed, with which regardless of the rotational speed of the three-phase generator (19) driving the internal combustion engine (4) on the connection device (24) standard mains voltage with permanently at least substantially stable frequency can be provided. Straßenbaumaschine nach Anspruch 1, dadurch gekennzeichnet, dass die Spannungsversorgungseinheit (21) wenigstens eine Universal-Umrichterschaltung (22) aufweist, mit der aus vom Drehstromgenerator (19) mit variierender Frequenz erzeugter, gegebenenfalls variierender Wechselspannung eine Zwischenspannung und aus dieser die Standard-Netzspannung mit stabiler Frequenz erzeugbar ist.Road construction machine according to claim 1, characterized in that the voltage supply unit (21) comprises at least one universal converter circuit (22), with the from alternating current generator (19) with varying frequency generated, optionally varying alternating voltage an intermediate voltage and from this the standard mains voltage stable frequency can be generated. Straßenbaumaschine nach Anspruch 2, dadurch gekennzeichnet, dass die Standard-Netzspannung bei einer stabilen Frequenz von etwa 50 Hz oder etwa 60 Hz etwa 110 Volt oder etwa 220 bis 240 Volt oder etwa 400 Volt beträgt.Road construction machine according to claim 2, characterized in that the standard mains voltage at a stable frequency of about 50 Hz or about 60 Hz is about 110 volts or about 220 to 240 volts or about 400 volts. Straßenbaumaschine nach wenigstens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Anschlusseinrichtung (24) wenigstens eine Klemme (26) oder eine Normsteckdose (25) aufweist, vorzugsweise eine Schuko-Steckdose.Road construction machine according to at least one of the preceding claims, characterized in that the connection device (24) has at least one terminal (26) or a standard socket (25), preferably a Schuko socket. Straßenbaumaschine nach Anspruch 4, dadurch gekennzeichnet, dass in der Anschlusseinrichtung (24) wenigstens eine Klemmenbatterie oder/und eine Schuko-Steckdosenbatterie vorgesehen ist bzw. sind.Road construction machine according to claim 4, characterized in that in the connection device (24) at least one terminal battery and / or a Schuko socket battery is or are provided. Straßenbaumaschine nach wenigstens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Spannungsversorgungseinheit (21) direkt an den Drehstromgenerator (19) oder an ein Absicherungssystem oder an eine abgesicherte Versorgungsleitung eines weiteren elektrischen Verbrauchers (18) der Straßenbaumaschine (F) angeschlossen ist.Road construction machine according to at least one of the preceding claims, characterized in that the power supply unit (21) directly to the three-phase generator (19) or to a security system or to a secured supply line a further electrical load (18) of the road construction machine (F) is connected. Straßenbaumaschine nach wenigstens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Straßenbaumaschine (F) ein Straßenfertiger ist, und dass am Straßenfertiger und/oder einer Einbaubohle (B) des Straßenfertigers (F) verteilt mehrere Anschlusseinrichtungen (24) angeordnet sind.Road construction machine according to at least one of the preceding claims, characterized in that the road construction machine (F) is a paver, and in that on the paver and / or a screed (B) of the paver (F) distributed more connection means (24) are arranged. Straßenbaumaschine nach wenigstens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass an der Anschlusseinrichtung (24) festverdrahtet oder trennbar wenigstens ein mit konstanter Frequenz elektrisch betreibbares Beleuchtungssystem (27), vorzugsweise ein Straßenfertiger- und/oder Baustellen-Beleuchtungssystem (27), angeschlossen ist.Road construction machine according to at least one of the preceding claims, characterized in that the connection device (24) hardwired or separable at least one constant frequency electrically operable lighting system (27), preferably a paver and / or construction site lighting system (27) is connected.
EP10003083.2A 2010-03-23 2010-03-23 Street construction machine Active EP2372022B1 (en)

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PL10003083T PL2372022T3 (en) 2010-03-23 2010-03-23 Street construction machine
EP10003083.2A EP2372022B1 (en) 2010-03-23 2010-03-23 Street construction machine
JP2011059982A JP5411185B2 (en) 2010-03-23 2011-03-18 Road construction machines, especially road finishing machines or feeders for road finishing machines
CN201110065937.3A CN102199910B (en) 2010-03-23 2011-03-18 Road construction machine, particularly road finisher or road finisher feeder
US13/051,396 US8784003B2 (en) 2010-03-23 2011-03-18 Road construction machine particularly a road finisher or road finisher feeder

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PL2372022T3 (en) 2015-06-30
JP5411185B2 (en) 2014-02-12
US20110236131A1 (en) 2011-09-29
EP2372022B1 (en) 2014-12-31
CN102199910A (en) 2011-09-28
US8784003B2 (en) 2014-07-22
CN102199910B (en) 2014-04-02

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