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EP2281947B2 - Road finisher with automatic motor control - Google Patents

Road finisher with automatic motor control Download PDF

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Publication number
EP2281947B2
EP2281947B2 EP09008415.3A EP09008415A EP2281947B2 EP 2281947 B2 EP2281947 B2 EP 2281947B2 EP 09008415 A EP09008415 A EP 09008415A EP 2281947 B2 EP2281947 B2 EP 2281947B2
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EP
European Patent Office
Prior art keywords
control signal
machine according
engine
controller
road finisher
Prior art date
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Active
Application number
EP09008415.3A
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German (de)
French (fr)
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EP2281947B1 (en
EP2281947A1 (en
Inventor
Ralf Weiser
Tobias Noll
Martin Dipl.-Ing. Buschmann
Achim Eul
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Joseph Voegele AG
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Joseph Voegele AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=41426223&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2281947(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Joseph Voegele AG filed Critical Joseph Voegele AG
Priority to EP09008415.3A priority Critical patent/EP2281947B2/en
Priority to PL09008415.3T priority patent/PL2281947T5/en
Priority to CN2010102071268A priority patent/CN101929123B/en
Priority to US12/821,970 priority patent/US8517628B2/en
Priority to CN201020234322XU priority patent/CN201972075U/en
Publication of EP2281947A1 publication Critical patent/EP2281947A1/en
Priority to US13/919,074 priority patent/US20130287495A1/en
Publication of EP2281947B1 publication Critical patent/EP2281947B1/en
Publication of EP2281947B2 publication Critical patent/EP2281947B2/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 present invention relates to a self-propelled machine according to the preamble of claim 1.
  • the self-propelled machine is a road finisher.
  • Road finishers are known, for example, from the following publications: DE 20 2007 003 326 U1 , DE 20 2004 016 489 U1 , DE 10 2004 002 658 A1 , DE 299 23 118 U1 , DE 299 20 556 U1 , DE 299 15 875 U1 , DE 296 12 035 U1 , DE 296 12 034 U1 or DE 196 34 503 B4 .
  • Such pavers can be driven by a wheeled chassis, as in the DE 299 20 556 U1 described, or via a crawler chassis, as in the DE 299 23 118 U1 described. They usually have a material bunker that receives the paving mix that forms the road surface.
  • the paving mix is transported from the material bunker to the rear area of the road finisher in the direction of travel by means of transport, for example scraper conveyors.
  • a lateral distribution device for example a auger, usually ensures that the paving mix that is delivered is distributed over the entire paving width.
  • the road finisher also carries what is known as a screed, which is arranged behind the transverse distribution device in the direction of travel. It is used to smooth and compress the applied road surface and for this purpose can have, for example, tampers, vibrating smoothing plates and/or pressure strips.
  • Road pavers are driven by an engine, which is usually an internal combustion engine. Diesel engines are used most frequently.
  • the engine also provides power for operating a generator, by means of which electricity is generated for operating a large number of components of the paver.
  • the electricity can be used, for example, to operate the lighting, the controller, pumps for hydraulic components and, in particular, electric heaters.
  • Such heaters are generally provided on all components that come into contact with the paving mix in order to prevent the paving mix from cooling down and solidifying on the components of the road finisher.
  • electrical heating elements are provided on the screed, since the paving mix has already cooled the most at this point on the road finisher.
  • the controller of the road finisher is set up to automatically start and/or switch off the engine upon receipt of at least one specific control signal.
  • the control of the road finisher thus receives an automatic start, an automatic stop or even an automatic start-stop. This makes it possible to switch off the engine when certain operating states of the road finisher occur and/or to switch the engine on again when certain other operating states occur. By switching off the engine during certain operating phases, the overall fuel requirement is significantly reduced.
  • the automatic starting and/or switching off of the engine results in two further advantages compared to manual starting or switching off: On the one hand, the operating phases that allow the engine to be switched off are utilized to the maximum in order to also reduce the fuel requirement to the maximum. On the other hand, there is no need for the operator of the finisher to constantly monitor the operating conditions that allow the engine to be switched off. Consequently, there is no impairment in the handling of the road finisher compared to conventional road finishers.
  • the road finisher has a button for generating a start control signal or a stop control signal in order to be able to operate it in a conventional manner.
  • it has at least one sensor for generating a control signal. This enables certain operating states of the road finisher to be recognized automatically and the engine to be started and/or switched off automatically as a result.
  • the sensor does not have to be designed directly to generate a control signal itself, but it can also simply transmit a measured variable to an evaluation circuit or evaluation logic, which then in turn generates the control signal for the motor control.
  • the senor is a temperature sensor.
  • the engine can be started and/or stopped depending on the temperature of certain paver components. This is particularly interesting for operating states in which the engine power is used exclusively or almost exclusively for heating certain components of the road finisher. If it is detected in such an operating state that further heating is not necessary, the engine can be switched off according to the invention. This offers significant fuel savings compared to traditionally turning off just the heaters and leaving the engine idling.
  • the temperature sensor is set up to measure the temperature of a screed of the road finisher, or a part of the screed (e.g. a base screed, an extending screed, etc.). Most of the heat output of the road finisher usually occurs at the screed. However, this does not have to be heated constantly, but only when its temperature falls below a predetermined threshold has fallen. As soon as a higher temperature threshold was exceeded, in conventional pavers only the heating elements were switched off again while the diesel engine continued to run.
  • the present invention now makes it possible for the temperature sensor of the screed to emit a control signal (possibly via a suitable evaluation circuit), on the basis of which reception the controller causes the motor to be switched off. Only when the temperature of the screed drops below a predetermined threshold is the engine restarted automatically in order to drive the generator and thus provide the electrical power for operating the electrical heating elements.
  • a time measuring element is provided for generating a control signal for the motor control. This time measuring element makes it possible to automatically start and/or switch off the road finisher after predetermined time intervals have elapsed after certain events.
  • the road finisher has a positioning and/or navigation system.
  • This positioning and/or navigation system can improve the operation of the road finisher in many ways. With a suitable precision of the location measurement, it can possibly allow a fully automatic operation of the road finisher.
  • the positioning and/or navigation system is preferably based on infrared transmitters, radio signals or satellites. All of these variants allow precise, wireless localization and navigation of the road finisher.
  • the positioning and/or navigation system is designed to generate a control signal for the controller.
  • the positioning and/or navigation system can not only enable the location and orientation of the road finisher in this way, but also cause the engine to start and/or switch off via the controller when certain operating states or environmental conditions are present.
  • the positioning and/or navigation system is connected to a device for determining a current distance and/or an expected time of arrival of another construction site vehicle.
  • This other construction site vehicle can be, for example, a truck that delivers paving mix for loading the road finisher.
  • the control of the road finisher can query the current position of the other construction site vehicle and calculate the expected arrival time of the approaching construction site vehicle from the current distance.
  • the engine controller also includes a clock or timer, the paver's engine can be started at a convenient time so that the screed and other heated paver components have reached the required operating temperature just as the other site vehicle arrives.
  • the engine of the road finisher according to the invention can remain switched off in order to save significant amounts of fuel in this way.
  • the device for determining a current distance and/or an expected time of arrival of another construction site vehicle should expediently be designed to generate a control signal for the engine control.
  • a starting device for starting the engine in response to receiving a corresponding control signal is preferably provided in the road finisher according to the invention, e.g. By sending the control signal to the starting device, the engine control can start the engine automatically in this way.
  • the road finisher 1 has a chassis 2 on which the operator's station 3 of the road finisher 1 is arranged.
  • the road finisher 1 can be moved by means of an undercarriage 4, which in the present case is a wheeled undercarriage 4 with wheels 5.
  • the chassis 4 is driven by means of a diesel engine 6, which is mounted on the chassis 2 and is connected to a generator (not shown) for generating electrical voltage.
  • the road finisher 1 also has a material bunker 7 for receiving paving mix, a transport device (not shown) for transporting the paving mix from the material bunker 7 under the control station 3 to the rear area of the paver, and a transverse distribution device 8, for example a auger for distributing the paving mix perpendicular to the direction of travel of the road finisher 1 over the entire paving width.
  • a screed 10 is mounted on the road finisher 1 on a beam 9 that can be hydraulically pivoted up and down. It is used to compress and smooth the spread paving mix.
  • the road finisher 1 also has at least one pump, hydraulic motor or hydrostatic drive unit (not shown) for functional and working components of the machine, and at least one hydraulic circuit including a hydraulic medium reservoir.
  • the road finisher 1 also has a controller 11 which is set up to automatically start and/or switch off the engine 6 upon receipt of at least one control signal.
  • a starting device 12 is provided, for example a starter, which has an energy store, For example, a battery 13, regardless of the operating state of the diesel engine 6 and the generator (not shown) is supplied with electrical power.
  • the energy store for example the battery 13, can be charged when the generator is in operation.
  • the starting device 12 could be a motor-generator unit or a hydraulic starter with a pressure accumulator as an energy store.
  • the controller 11 is connected wirelessly or by wire to a temperature sensor 14 on the screed 10.
  • the temperature sensor 14 measures the temperature of the screed 10. It can transmit a control signal to the controller 11 if the temperature of the screed exceeds or falls below specified temperature thresholds.
  • engine control 11 is connected to a positioning and navigation system 15 .
  • This positioning and navigation system 15 is satellite-based (e.g. via GPS) and is used to detect the current position of the road finisher 1. In the present case, it is also designed to communicate with a compatible positioning and navigation system of another construction site vehicle, for example a truck for delivering paving mix.
  • the positioning and navigation system 15 of the road finisher 1 can determine the current position and distance of the other construction site vehicle and calculate the expected arrival time of the other construction site vehicle at the road finisher 1 using suitable processes. This calculation of the expected time of arrival can also be performed in the controller 11 .
  • the operation of the road finisher 1 according to the invention can take place as follows.
  • the road finisher 1 stands in one place and waits for paving mix and/or for a signal to start paving.
  • all heated parts in particular the paving screed 10, are kept at the paving temperature by operating the heating elements provided for this purpose.
  • the temperature sensor 14 on the screed 10 or another temperature sensor on other heated components of the road finisher 1 detects that a predetermined temperature threshold has been exceeded, which makes further heating unnecessary, the sensor 14 reports this to the engine controller 11 by means of a corresponding control signal
  • the engine controller 11 then ensures that the diesel engine 6 is switched off, since its power is now required neither as drive power for driving nor for the operation of the heating elements.
  • the temperature of the screed 10 will then slowly drop. If the temperature sensor 14 detects that the temperature has fallen below a predetermined threshold, it reports this to the engine controller 11 by another control signal Motor 6 operate the generator and can thus provide the electrical power for the heating elements. The automatic switching off and starting of the engine 6 during the cooling phases of the screed 10 saves considerable amounts of fuel.
  • the road finisher 1 is waiting for a truck with paving mix to arrive.
  • the diesel engine 6 remains switched off in order not to consume any fuel.
  • the paving journey should begin as soon as possible after the delivery of the paving mix.
  • the road finisher 1 can use the positioning and navigation system 15 to determine the current position of the approaching truck in order to determine the expected arrival time of the paving mix.
  • Information is stored in the controller 11 about the period of time required to heat up the screed 10 to the operating temperature. This enables the controller 11 to switch on the diesel engine 6 at a suitable point in time, so that the required operating temperature is reached precisely when the truck arrives. In this way, unnecessarily long heating-up phases are avoided, while at the same time the paving journey can be started immediately after receipt of the paving mix.
  • the road finisher 1 according to the invention can be modified in many ways.
  • further sensors can be provided for monitoring certain operating states of various components of the road finisher 1, which make starting and/or switching off the engine 6 appear suitable.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Machines (AREA)

Description

Die vorliegende Erfindung bezieht sich auf eine selbstfahrende Maschine gemäß dem Oberbegriff des Anspruchs 1. Bei der selbstfahrenden Maschine handelt es sich um einen Straßenfertiger.The present invention relates to a self-propelled machine according to the preamble of claim 1. The self-propelled machine is a road finisher.

Straßenfertiger sind beispielsweise aus folgenden Veröffentlichungen bekannt: DE 20 2007 003 326 U1 , DE 20 2004 016 489 U1 , DE 10 2004 002 658 A1 , DE 299 23 118 U1 , DE 299 20 556 U1 , DE 299 15 875 U1 , DE 296 12 035 U1 , DE 296 12 034 U1 oder DE 196 34 503 B4 . Solche Straßenfertiger können über ein Radfahrwerk angetrieben werden, wie in der DE 299 20 556 U1 beschrieben, oder über ein Raupenfahrwerk, wie in der DE 299 23 118 U1 beschrieben. Sie verfügen üblicherweise über einen Gutbunker, der das den Straßenbelag bildende Einbaumischgut aufnimmt. Über Transportmittel, beispielsweise Kratzerbänder, wird das Einbaumischgut aus dem Gutbunker zum in Fahrtrichtung hinteren Bereich des Straßenfertigers transportiert. Dort sorgt in der Regel eine Querverteilvorrichtung, beispielsweise eine Verteilerschnecke, für eine Verteilung des angelieferten Einbaumischgutes über die gesamte Einbaubreite. Schließlich führt der Straßenfertiger noch eine sogenannte Einbaubohle mit, die in Fahrtrichtung hinter der Querverteilvorrichtung angeordnet ist. Sie dient zum Glätten und Komprimieren des aufgebrachten Straßenbelages und kann zu diesem Zweck beispielsweise Tamper (Stampfer), vibrierende Glättbleche und/oder Pressleisten aufweisen.Road finishers are known, for example, from the following publications: DE 20 2007 003 326 U1 , DE 20 2004 016 489 U1 , DE 10 2004 002 658 A1 , DE 299 23 118 U1 , DE 299 20 556 U1 , DE 299 15 875 U1 , DE 296 12 035 U1 , DE 296 12 034 U1 or DE 196 34 503 B4 . Such pavers can be driven by a wheeled chassis, as in the DE 299 20 556 U1 described, or via a crawler chassis, as in the DE 299 23 118 U1 described. They usually have a material bunker that receives the paving mix that forms the road surface. The paving mix is transported from the material bunker to the rear area of the road finisher in the direction of travel by means of transport, for example scraper conveyors. There, a lateral distribution device, for example a auger, usually ensures that the paving mix that is delivered is distributed over the entire paving width. Finally, the road finisher also carries what is known as a screed, which is arranged behind the transverse distribution device in the direction of travel. It is used to smooth and compress the applied road surface and for this purpose can have, for example, tampers, vibrating smoothing plates and/or pressure strips.

Angetrieben werden Straßenfertiger mittels eines Motors, bei dem es sich in der Regel um einen Verbrennungsmotor handelt. Am Häufigsten werden Dieselmotoren eingesetzt. Neben der Antriebsleistung stellt der Motor auch Leistung zum Betreiben eines Generators zur Verfügung, mittels dessen Strom zum Betrieb einer Vielzahl von Komponenten des Fertigers erzeugt wird. Mittels des Stroms können beispielsweise die Beleuchtung, die Steuerung, Pumpen für hydraulische Komponenten sowie insbesondere elektrische Heizungen betrieben werden. Solche Heizungen sind in der Regel an sämtlichen Komponenten vorgesehen, die mit dem Einbaumischgut in Kontakt kommen, um ein Erkalten und Erstarren des Einbaumischgutes an den Komponenten des Straßenfertigers zu verhindern. Insbesondere sind elektrische Heizelemente an der Einbaubohle vorgesehen, da sich das Einbaumischgut an diesem Punkt des Straßenfertigers bereits am weitesten abgekühlt hat.Road pavers are driven by an engine, which is usually an internal combustion engine. Diesel engines are used most frequently. In addition to the drive power, the engine also provides power for operating a generator, by means of which electricity is generated for operating a large number of components of the paver. The electricity can be used, for example, to operate the lighting, the controller, pumps for hydraulic components and, in particular, electric heaters. Such heaters are generally provided on all components that come into contact with the paving mix in order to prevent the paving mix from cooling down and solidifying on the components of the road finisher. In particular, electrical heating elements are provided on the screed, since the paving mix has already cooled the most at this point on the road finisher.

Bedingt durch sein Gewicht und die Vielzahl an angetriebenen Komponenten, auch durch das notwendige Betreiben der Heizelemente, ist der Kraftstoffverbrauch eines Straßenfertigers vergleichsweise hoch. Angesichts steigender Energiepreise steigt der Anteil der Energiekosten an den gesamten Betriebskosten eines Straßenfertigers beträchtlich. Bereits eine Senkung des Kraftstoffbedarfs um 10% bis 20% würde pro Jahr mehrere 1.000 Liter Kraftstoff zum Betreiben eines Straßenfertigers einsparen. Dies käme nicht nur der Umwelt zu Gute, sondern würde auch die Betriebskosten eines Straßenfertigers deutlich reduzieren.Due to its weight and the large number of driven components, as well as the necessary operation of the heating elements, the fuel consumption of a road finisher is comparatively high. In view of rising energy prices, the share of energy costs in the total operating costs of a paver is increasing considerably. A reduction in fuel consumption of just 10% to 20% would save several thousand liters of fuel per year for operating a paver. This would not only benefit the environment, but would also significantly reduce the operating costs of a road finisher.

Aufgabe der vorliegenden Erfindung ist es daher, mit konstruktiv möglichst einfachen Mitteln den Kraftstoffbedarf eines Straßenfertigers zu verringern.It is therefore the object of the present invention to reduce the fuel consumption of a road finisher using means that are as simple as possible in terms of construction.

Diese Aufgabe wird erfindungsgemäß gelöst durch einen selbstfahrenden Straßenfertiger mit den Merkmalen des Anspruchs 1 oder des Anspruchs 11. Vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen angegeben.This object is achieved according to the invention by a self-propelled road paver having the features of claim 1 or claim 11. Advantageous developments of the invention are specified in the dependent claims.

Erfindungsgemäß ist die Steuerung des Straßenfertigers dazu eingerichtet, automatisch auf den Empfang mindestens eines bestimmten Steuersignals das Anlassen und/oder Abschalten des Motors zu veranlassen. Die Steuerung des Straßenfertigers erhält somit erfindungsgemäß eine Start-Automatik, eine Stopp-Automatik oder sogar eine Start-Stopp-Automatik. Dies ermöglicht es, den Motor beim Eintritt bestimmter Betriebszustände des Straßenfertigers abzuschalten und/oder den Motor beim Eintreten bestimmter anderer Betriebszustände wieder einzuschalten. Durch das Abschalten des Motors während bestimmter Betriebsphasen wird der Gesamt-Kraftstoffbedarf erheblich gesenkt. Durch das automatische Anlassen und/oder Abschalten des Motors ergeben sich gegenüber einem manuellen Anlassen oder Abschalten zwei weitere Vorteile: Zum einen werden die ein Abschalten des Motors gestattenden Betriebsphasen maximal ausgenutzt, um auch den Kraftstoffbedarf maximal zu senken. Zum anderen besteht für den Bediener des Fertigers keine Notwendigkeit, die ein Abschalten des Motors ermöglichenden Betriebszustände ständig zu überwachen. In der Handhabung des Straßenfertigers tritt folglich gegenüber herkömmlichen Straßenfertigern keine Beeinträchtigung auf.According to the invention, the controller of the road finisher is set up to automatically start and/or switch off the engine upon receipt of at least one specific control signal. According to the invention, the control of the road finisher thus receives an automatic start, an automatic stop or even an automatic start-stop. This makes it possible to switch off the engine when certain operating states of the road finisher occur and/or to switch the engine on again when certain other operating states occur. By switching off the engine during certain operating phases, the overall fuel requirement is significantly reduced. The automatic starting and/or switching off of the engine results in two further advantages compared to manual starting or switching off: On the one hand, the operating phases that allow the engine to be switched off are utilized to the maximum in order to also reduce the fuel requirement to the maximum. On the other hand, there is no need for the operator of the finisher to constantly monitor the operating conditions that allow the engine to be switched off. Consequently, there is no impairment in the handling of the road finisher compared to conventional road finishers.

Erfindungsgemäß weist der Straßenfertiger einen Taster zum Erzeugen eines Start-Steuersignales bzw. eines Stopp-Steuersignales auf, um ihn in herkömmlicher Weise bedienen zu können. Zusätzlich weist er mindestens einen Sensor zum Erzeugen eines Steuersignals auf. Dies ermöglicht das automatische Erkennen bestimmter Betriebszustände des Straßenfertigers, und das daraufhin erfolgende, automatische Anlassen und/oder Abschalten des Motors. Der Sensor muss nicht unmittelbar selbst zum Erzeugen eines Steuersignals ausgebildet sein, sondern er kann auch lediglich eine Messgröße an eine Auswerteschaltung oder Auswertelogik übermitteln, die dann ihrerseits das Steuersignal für die Motorsteuerung erzeugt.According to the invention, the road finisher has a button for generating a start control signal or a stop control signal in order to be able to operate it in a conventional manner. In addition, it has at least one sensor for generating a control signal. This enables certain operating states of the road finisher to be recognized automatically and the engine to be started and/or switched off automatically as a result. The sensor does not have to be designed directly to generate a control signal itself, but it can also simply transmit a measured variable to an evaluation circuit or evaluation logic, which then in turn generates the control signal for the motor control.

Nach Anspruch 1 handelt es sich bei dem Sensor um einen Temperatursensor.
Dies bedeutet, dass der Motor je nach Temperatur bestimmter Komponenten des Straßenfertigers angelassen und/oder abgeschaltet werden kann. Interessant ist dies insbesondere für Betriebszustände, in denen die Motorleistung ausschließlich oder fast ausschließlich für das Beheizen bestimmter Komponenten des Straßenfertigers eingesetzt wird. Wenn in solch einem Betriebszustand erkannt wird, dass ein weiteres Heizen nicht erforderlich ist, kann erfindungsgemäß der Motor abgeschaltet werden. Gegenüber einem herkömmlichen Abschalten lediglich der Heizelemente und einem Weiterlaufen des Motors im Leerlauf bietet dies erhebliche Kraftstoffeinsparungen.According to claim 1, the sensor is a temperature sensor.
This means that the engine can be started and/or stopped depending on the temperature of certain paver components. This is particularly interesting for operating states in which the engine power is used exclusively or almost exclusively for heating certain components of the road finisher. If it is detected in such an operating state that further heating is not necessary, the engine can be switched off according to the invention. This offers significant fuel savings compared to traditionally turning off just the heaters and leaving the engine idling.

Dabei ist der Temperatursensor zum Messen der Temperatur einer Einbaubohle des Straßenfertigers eingerichtet, beziehungsweise eines Teils der Einbaubohle (z. B. einer Grundbohle, einer Ausziehbohle etc.). Der größte Teil der Heizleistung des Straßenfertigers fällt üblicherweise an der Einbaubohle an. Diese muss jedoch nicht ständig beheizt werden, sondern nur dann, wenn ihre Temperatur unter eine vorgegebene Schwelle gefallen ist. Sobald eine höhere Temperaturschwelle überschritten wurde, wurden in herkömmlichen Straßenfertigern lediglich die Heizelemente wieder abgeschaltet, während der Dieselmotor weiterlief. Die vorliegende Erfindung ermöglicht es nun, dass der Temperatursensor der Einbaubohle (gegebenenfalls über eine geeignete Auswerteschaltung) ein Steuersignal abgibt, aufgrund dessen Empfangs die Steuerung das Abschalten des Motors veranlasst. Erst beim Absinken der Temperatur der Einbaubohle unter eine vorgegebene Schwelle wird der Motor wieder automatisch angelassen, um den Generator anzutreiben und so die elektrische Leistung für den Betrieb der elektrischen Heizelemente zur Verfügung zu stellen.The temperature sensor is set up to measure the temperature of a screed of the road finisher, or a part of the screed (e.g. a base screed, an extending screed, etc.). Most of the heat output of the road finisher usually occurs at the screed. However, this does not have to be heated constantly, but only when its temperature falls below a predetermined threshold has fallen. As soon as a higher temperature threshold was exceeded, in conventional pavers only the heating elements were switched off again while the diesel engine continued to run. The present invention now makes it possible for the temperature sensor of the screed to emit a control signal (possibly via a suitable evaluation circuit), on the basis of which reception the controller causes the motor to be switched off. Only when the temperature of the screed drops below a predetermined threshold is the engine restarted automatically in order to drive the generator and thus provide the electrical power for operating the electrical heating elements.

In einer Variante der Erfindung ist ein Zeitmessglied zum Erzeugen eines Steuersignals für die Motorsteuerung vorgesehen. Dieses Zeitmessglied ermöglicht es, den Straßenfertiger nach Ablauf vorgegebener Zeitintervalle nach bestimmten Ereignissen automatisch anzulassen und/oder abzuschalten.In one variant of the invention, a time measuring element is provided for generating a control signal for the motor control. This time measuring element makes it possible to automatically start and/or switch off the road finisher after predetermined time intervals have elapsed after certain events.

In einer eigenständigen Ausführungsform der Erfindung weist der Straßenfertiger ein Ortungs- und/oder Navigationssystem auf. Dieses Ortungs- und/oder Navigationssystem kann den Betrieb des Straßenfertigers auf vielfältige Weise verbessern. Bei geeigneter Präzision der Ortsmessung kann es gegebenenfalls einen vollautomatischen Betrieb des Straßenfertigers erlauben.In an independent embodiment of the invention, the road finisher has a positioning and/or navigation system. This positioning and/or navigation system can improve the operation of the road finisher in many ways. With a suitable precision of the location measurement, it can possibly allow a fully automatic operation of the road finisher.

Vorzugsweise ist das Ortungs- und/oder Navigationssystem infrarotsender-, funk- oder satellitengestützt. Alle diese Varianten erlauben eine präzise, drahtlose Ortung und Navigation des Straßenfertigers.The positioning and/or navigation system is preferably based on infrared transmitters, radio signals or satellites. All of these variants allow precise, wireless localization and navigation of the road finisher.

Gemäß Anspruch 5 oder 11 ist das Ortungs- und/oder Navigationssystem ausgebildet zum Erzeugen eines Steuersignals für die Steuerung. Beim erfindungsgemäßen Straßenfertiger kann das Ortungs- und/oder Navigationssystem auf diese Weise nicht nur die Ortsbestimmung und Orientierung des Straßenfertigers ermöglichen, sondern auch über die Steuerung das Anlassen und/oder Abschalten des Motors veranlassen, wenn bestimmte Betriebszustände oder Umgebungsbedingungen vorliegen.According to claim 5 or 11, the positioning and/or navigation system is designed to generate a control signal for the controller. In the road finisher according to the invention, the positioning and/or navigation system can not only enable the location and orientation of the road finisher in this way, but also cause the engine to start and/or switch off via the controller when certain operating states or environmental conditions are present.

Gemäß Anspruch 6 oder 11 ist das Ortungs- und/oder Navigationssystem verbunden mit einer Einrichtung zum Ermitteln einer momentanen Entfernung und/oder eines erwarteten Ankunftszeitpunktes eines anderen Baustellenfahrzeugs. Bei diesem anderen Baustellenfahrzeug kann es sich beispielsweise um einen LKW handeln, der Einbaumischgut zum Beschicken des Straßenfertigers anliefert. Wenn der Straßenfertiger und das andere Baustellenfahrzeug jeweils mit einem geeigneten, kompatiblen Ortungs- und/oder Navigationssystem versehen sind, kann die Steuerung des Straßenfertigers die momentane Position des anderen Baustellenfahrzeuges abfragen und aus der momentanen Entfernung die erwartete Ankunftszeit des sich nähernden Baustellenfahrzeuges berechnen. Wenn die Motorsteuerung ferner über eine Uhr oder ein Zeitmessglied verfügt, kann der Motor des Straßenfertigers zu einem geeigneten Zeitpunkt angelassen werden, so dass die Einbaubohle und die anderen beheizten Komponenten des Straßenfertigers genau beim Eintreffen des anderen Baustellenfahrzeuges die erforderliche Betriebstemperatur erreicht haben. Vor der Aufheizphase, die auf diese Weise so kurz wie möglich gehalten wird, kann der Motor des erfindungsgemäßen Straßenfertigers abgeschaltet bleiben, um auf diese Weise erhebliche Mengen an Kraftstoff einzusparen. Zweckmäßigerweise sollte die Einrichtung zum Ermitteln einer momentanen Entfernung und/oder eines erwarteten Ankunftszeitpunktes eines anderen Baustellenfahrzeuges vor diesem Hintergrund ausgebildet sein zum Erzeugen eines Steuersignals für die Motorsteuerung.According to claim 6 or 11, the positioning and/or navigation system is connected to a device for determining a current distance and/or an expected time of arrival of another construction site vehicle. This other construction site vehicle can be, for example, a truck that delivers paving mix for loading the road finisher. If the road finisher and the other construction site vehicle are each equipped with a suitable, compatible positioning and/or navigation system, the control of the road finisher can query the current position of the other construction site vehicle and calculate the expected arrival time of the approaching construction site vehicle from the current distance. If the engine controller also includes a clock or timer, the paver's engine can be started at a convenient time so that the screed and other heated paver components have reached the required operating temperature just as the other site vehicle arrives. Before the warm-up phase, which is kept as short as possible in this way, the engine of the road finisher according to the invention can remain switched off in order to save significant amounts of fuel in this way. Against this background, the device for determining a current distance and/or an expected time of arrival of another construction site vehicle should expediently be designed to generate a control signal for the engine control.

Vorzugsweise ist im erfindungsgemäßen Straßenfertiger eine Startvorrichtung zum Anlassen des Motors in Reaktion auf den Empfang eines entsprechenden Steuersignals vorgesehen, z.B. ein Anlasser, eine Motor-Generator-Einheit (dadurch Einsparung von Anlasser und Lichtmaschine), ein hydraulischer Starter mittels Druckspeicher oder Ähnliches. Durch Abgabe des Steuersignals an die Startvorrichtung kann die Motorsteuerung den Motor auf diese Weise automatisch anlassen.A starting device for starting the engine in response to receiving a corresponding control signal is preferably provided in the road finisher according to the invention, e.g. By sending the control signal to the starting device, the engine control can start the engine automatically in this way.

Günstig ist es dabei, wenn außerdem eine Batterie vorgesehen ist, um die Startvorrichtung auch bei ausgeschaltetem Motor mit Energie versorgen zu können.It is favorable here if a battery is also provided in order to be able to supply the starting device with energy even when the engine is switched off.

Im Folgenden wird ein vorteilhaftes Ausführungsbeispiel der Erfindung anhand einer Zeichnung näher dargestellt.

Figur 1
zeigt eine Seitenansicht eines erfindungsgemäßen Straßenfertigers 1 als Beispiel einer selbstfahrenden Maschine gemäß der Erfindung.
An advantageous exemplary embodiment of the invention is illustrated in more detail below with reference to a drawing.
figure 1
shows a side view of a road finisher 1 according to the invention as an example of a self-propelled machine according to the invention.

Der Straßenfertiger 1 verfügt über ein Chassis 2, auf dem der Bedienstand 3 des Straßenfertigers 1 angeordnet ist. Der Straßenfertiger 1 ist mittels eines Fahrwerks 4 verfahrbar, bei dem es sich im vorliegenden Fall um ein Radfahrwerk 4 mit Rädern 5 handelt. Angetrieben wird das Fahrwerk 4 mittels eines Dieselmotors 6, der auf dem Chassis 2 gelagert ist und mit einem Generator (nicht dargestellt) zum Erzeugen elektrischer Spannung verbunden ist.The road finisher 1 has a chassis 2 on which the operator's station 3 of the road finisher 1 is arranged. The road finisher 1 can be moved by means of an undercarriage 4, which in the present case is a wheeled undercarriage 4 with wheels 5. The chassis 4 is driven by means of a diesel engine 6, which is mounted on the chassis 2 and is connected to a generator (not shown) for generating electrical voltage.

Der Straßenfertiger 1 verfügt ferner über einen Gutbunker 7 zur Aufnahme von Einbaumischgut, über eine Transportvorrichtung (nicht dargestellt), zum Transportieren des Einbaumischgutes aus dem Gutbunker 7 unter dem Bedienstand 3 hindurch zum hinteren Bereich des Straßenfertigers, sowie über eine Querverteilvorrichtung 8, beispielsweise eine Verteilerschnecke zum Verteilen des Einbaumischgutes senkrecht zur Fahrtrichtung des Straßenfertigers 1 über die gesamte Einbaubreite. An einem hydraulisch nach oben und unten verschwenkbaren Holm 9 ist eine Einbaubohle 10 am Straßenfertiger 1 gelagert. Sie dient zum Komprimieren und Glätten des ausgebrachten Einbaumischguts.The road finisher 1 also has a material bunker 7 for receiving paving mix, a transport device (not shown) for transporting the paving mix from the material bunker 7 under the control station 3 to the rear area of the paver, and a transverse distribution device 8, for example a auger for distributing the paving mix perpendicular to the direction of travel of the road finisher 1 over the entire paving width. A screed 10 is mounted on the road finisher 1 on a beam 9 that can be hydraulically pivoted up and down. It is used to compress and smooth the spread paving mix.

Der Straßenfertiger 1 verfügt ferner über wenigstens eine Pumpen-, Hydromotoren- oder hydrostatische Antriebseinheit (nicht dargestellt) für Funktions- und Arbeitskomponenten der Maschine, und über wenigstens einen ein Hydraulikmedium-Reservoir umfassenden Hydraulikkreis.The road finisher 1 also has at least one pump, hydraulic motor or hydrostatic drive unit (not shown) for functional and working components of the machine, and at least one hydraulic circuit including a hydraulic medium reservoir.

Der Straßenfertiger 1 weist ferner eine Steuerung 11 auf, die dazu eingerichtet ist, automatisch auf den Empfang mindestens eines Steuersignals hin das Anlassen und/oder Abschalten des Motors 6 zu veranlassen. Zum Anlassen des Motors 6 ist eine Startvorrichtung 12 vorgesehen, z.B. ein Anlasser, der über einen Energiespeicher, z.B. eine Batterie 13, unabhängig vom Betriebszustand des Dieselmotors 6 und des Generators (nicht dargestellt) mit elektrischer Leistung versorgt wird. Der Energiespeicher, z.B. die Batterie 13, kann beim Betrieb des Generators aufgeladen werden.The road finisher 1 also has a controller 11 which is set up to automatically start and/or switch off the engine 6 upon receipt of at least one control signal. To start the engine 6, a starting device 12 is provided, for example a starter, which has an energy store, For example, a battery 13, regardless of the operating state of the diesel engine 6 and the generator (not shown) is supplied with electrical power. The energy store, for example the battery 13, can be charged when the generator is in operation.

Alternativ könnte die Startvorrichtung 12 eine Motor-Generator-Einheit oder ein hydraulischer Starter mit Druckspeicher als Energiespeicher sein.Alternatively, the starting device 12 could be a motor-generator unit or a hydraulic starter with a pressure accumulator as an energy store.

Drahtlos oder drahtgebunden steht die Steuerung 11 in Verbindung mit einem Temperatursensor 14 an der Einbaubohle 10. Der Temperatursensor 14 misst die Temperatur der Einbaubohle 10. Er kann ein Steuersignal an die Steuerung 11 übermitteln, wenn die Temperatur der Einbaubohle vorgegebene Temperaturschwellen über- oder unterschreitet.The controller 11 is connected wirelessly or by wire to a temperature sensor 14 on the screed 10. The temperature sensor 14 measures the temperature of the screed 10. It can transmit a control signal to the controller 11 if the temperature of the screed exceeds or falls below specified temperature thresholds.

Außerdem ist die Motorsteuerung 11 mit einem Ortungs- und Navigationssystem 15 verbunden. Dieses Ortungs- und Navigationssystem 15 ist satellitengestützt (beispielsweise über GPS) und dient zum Erkennen der momentanen Position des Straßenfertigers 1. Im vorliegenden Fall ist es gleichzeitig ausgebildet zum Kommunizieren mit einem kompatiblen Ortungs- und Navigationssystem eines anderen Baustellenfahrzeugs, beispielsweise eines LKWs zum Anliefern von Einbaumischgut. Das Ortungs- und Navigationssystem 15 des Straßenfertigers 1 kann die aktuelle Position und Entfernung des anderen Baustellenfahrzeugs ermitteln und durch geeignete Prozesse die erwartete Ankunftszeit des anderen Baustellenfahrzeugs am Straßenfertiger 1 berechnen. Diese Berechnung der erwarteten Ankunftszeit kann auch in der Steuerung 11 vorgenommen werden.In addition, engine control 11 is connected to a positioning and navigation system 15 . This positioning and navigation system 15 is satellite-based (e.g. via GPS) and is used to detect the current position of the road finisher 1. In the present case, it is also designed to communicate with a compatible positioning and navigation system of another construction site vehicle, for example a truck for delivering paving mix. The positioning and navigation system 15 of the road finisher 1 can determine the current position and distance of the other construction site vehicle and calculate the expected arrival time of the other construction site vehicle at the road finisher 1 using suitable processes. This calculation of the expected time of arrival can also be performed in the controller 11 .

Der Betrieb des erfindungsgemäßen Straßenfertigers 1 kann wie folgt ablaufen.The operation of the road finisher 1 according to the invention can take place as follows.

In einem Bereitschaftsmodus steht der Straßenfertiger 1 an einer Stelle und wartet auf Einbaumischgut und/oder auf ein Signal zum Beginn der Einbaufahrt. Um möglichst bald mit dem Einbau beginnen zu können, werden alle beheizten Teile, insbesondere die Einbaubohle 10, auf Einbautemperatur gehalten, indem die dafür vorgesehenen Heizelemente betrieben werden. Sobald der Temperatursensor 14 an der Einbaubohle 10 (oder ein weiterer Temperatursensor an anderen beheizten Komponenten des Straßenfertigers 1) erkennt, dass eine vorgegebene Temperaturschwelle überschritten ist, die ein weiteres Beheizen überflüssig macht, meldet der Sensor 14 dies durch ein entsprechendes Steuersignal an die Motorsteuerung 11. Die Motorsteuerung 11 sorgt daraufhin für ein Abschalten des Dieselmotors 6, da dessen Leistung nun weder als Antriebsleistung zum Fahren, noch für den Betrieb der Heizelemente erforderlich ist.In a standby mode, the road finisher 1 stands in one place and waits for paving mix and/or for a signal to start paving. In order to be able to start paving as soon as possible, all heated parts, in particular the paving screed 10, are kept at the paving temperature by operating the heating elements provided for this purpose. As soon as the temperature sensor 14 on the screed 10 (or another temperature sensor on other heated components of the road finisher 1) detects that a predetermined temperature threshold has been exceeded, which makes further heating unnecessary, the sensor 14 reports this to the engine controller 11 by means of a corresponding control signal The engine controller 11 then ensures that the diesel engine 6 is switched off, since its power is now required neither as drive power for driving nor for the operation of the heating elements.

Die Temperatur der Einbaubohle 10 wird daraufhin langsam absinken. Wenn der Temperatursensor 14 erkennt, dass die Temperatur unter eine vorgegebene Schwelle gefallen ist, meldet er dies durch ein anderes Steuersignal an die Motorsteuerung 11. Die Motorsteuerung 11 veranlasst daraufhin das automatische Anlassen des Motors 6 mittels der Startvorrichtung 12, z.B. des Anlassers, damit der Motor 6 den Generator betreiben und so die elektrische Leistung für die Heizelemente zur Verfügung stellen kann. Das automatische Abschalten und Anlassen des Motors 6 während der Abkühlphasen der Einbaubohle 10 spart erhebliche Mengen an Kraftstoff ein.The temperature of the screed 10 will then slowly drop. If the temperature sensor 14 detects that the temperature has fallen below a predetermined threshold, it reports this to the engine controller 11 by another control signal Motor 6 operate the generator and can thus provide the electrical power for the heating elements. The automatic switching off and starting of the engine 6 during the cooling phases of the screed 10 saves considerable amounts of fuel.

In einer anderen Situation wartet der Straßenfertiger 1 auf das Eintreffen eines LKWs mit Einbaumischgut. Während dieses Zustandes bleibt der Dieselmotor 6 abgeschaltet, um keinen Kraftstoff zu verbrauchen. Andererseits soll jedoch die Einbaufahrt möglichst unmittelbar im Anschluss an die Anlieferung des Einbaumischguts beginnen.In another situation, the road finisher 1 is waiting for a truck with paving mix to arrive. During this state, the diesel engine 6 remains switched off in order not to consume any fuel. On the other hand, however, the paving journey should begin as soon as possible after the delivery of the paving mix.

Mittels des Ortungs- und Navigationssystems 15 kann der Straßenfertiger 1 die momentane Position des sich nähernden LKWs bestimmen, um daraus die erwartete Ankunftszeit des Einbaumischguts zu ermitteln. In der Steuerung 11 sind Informationen darüber hinterlegt, welche Zeitspanne zum Aufheizen der Einbaubohle 10 auf Betriebstemperatur notwendig ist. Dies ermöglicht es der Steuerung 11, den Dieselmotor 6 zu einem geeigneten Zeitpunkt einzuschalten, so dass genau beim Eintreffen des LKWs die erforderliche Betriebstemperatur erreicht wird. Auf diese Weise werden unnötig lange Aufheizphasen vermieden, während gleichzeitig unmittelbar nach Erhalt des Einbaumischguts die Einbaufahrt aufgenommen werden kann.The road finisher 1 can use the positioning and navigation system 15 to determine the current position of the approaching truck in order to determine the expected arrival time of the paving mix. Information is stored in the controller 11 about the period of time required to heat up the screed 10 to the operating temperature. This enables the controller 11 to switch on the diesel engine 6 at a suitable point in time, so that the required operating temperature is reached precisely when the truck arrives. In this way, unnecessarily long heating-up phases are avoided, while at the same time the paving journey can be started immediately after receipt of the paving mix.

Ausgehend von dem dargestellten Ausführungsbeispiel kann der erfindungsgemäße Straßenfertiger 1 auf vielfache Weise abgewandelt werden. Beispielsweise können weitere Sensoren zum Überwachen bestimmter Betriebszustände verschiedener Komponenten des Straßenfertigers 1 vorgesehen sein, die ein Anlassen und/oder Abschalten des Motors 6 geeignet erscheinen lassen.Based on the illustrated embodiment, the road finisher 1 according to the invention can be modified in many ways. For example, further sensors can be provided for monitoring certain operating states of various components of the road finisher 1, which make starting and/or switching off the engine 6 appear suitable.

Claims (18)

  1. A self-propelling machine (1) for processing bituminous or concrete pavement material, wherein the self-propelling machine (1) is a road finisher, comprising
    - an internal combustion engine (6) as a primary drive source,
    - a controller (11) for the engine (6), said controller (11) receiving control signals,
    - at least one pump drive unit, hydraulic-motor drive unit or hydrostatic drive unit for functional and operational components of the machine,
    - at least one hydraulic circuit comprising a hydraulic medium reservoir, and
    - a button for generating a start control signal or a stop control signal,
    characterized in that
    the controller (11) is configured for automatically causing starting and/or stopping of the engine (6) in response to receipt of at least one specific control signal,
    and that at least one sensor (14) is provided for automatically detecting certain operating modes of the road finisher and for then generating a control signal for the starting and/or stopping of the motor (6),
    wherein the sensor (14) is a temperature sensor which is configured for measuring the temperature of a screed (10) of the road finisher (1).
  2. A machine according to claim 1, characterized in that a timer for generating a control signal is provided.
  3. A machine according to one of the preceding claims, characterized in that the road finisher (1) comprises a localization and/or navigation system (15).
  4. A machine according to claim 3, characterized in that the localization and/or navigation system (15) is infrared-transmitter-, radio- or satellite-based.
  5. A machine according to one of the claims 3 or 4, characterized in that the localization and/or navigation system (15) is configured for generating a control signal for the controller (11).
  6. A machine according to one of the claims 3 to 5, characterized in that, in combination with the localization and/or navigation system (15), means are provided for ascertaining the current distance to and/or an expected time of arrival of some other road works vehicle.
  7. A machine according to claim 6, characterized in that said means are configured for generating a control signal for the controller (11).
  8. A machine according to one of the preceding claims, characterized in that a starting device (12) is provided for starting the engine (6) in response to receipt of a respective control signal.
  9. A machine according to claim 8, characterized in that an energy store is provided for supplying the starting device (12) with energy also in the deactivated condition of the engine (6).
  10. A machine according to claim 9, characterized in that a battery (13) is provided as an energy store.
  11. A self-propelling machine (1) for processing bituminous or concrete pavement material, wherein the self-propelling machine (1) is a road finisher, comprising
    - an internal combustion engine (6) as a primary drive source,
    - a controller (11) for the engine (6), said controller (11) receiving control signals,
    - at least one pump drive unit, hydraulic-motor drive unit or hydrostatic drive unit for functional and operational components of the machine,
    - at least one hydraulic circuit comprising a hydraulic medium reservoir, and
    - a button for generating a start control signal or a stop control signal,
    characterized in that
    the controller (11) is configured for automatically causing starting and/or stopping of the engine (6) in response to receipt of at least one specific control signal,
    and that at least one sensor (14) is provided for automatically detecting certain operating modes of the road finisher and for then generating a control signal for the starting and/or stopping of the motor (6),
    and in that the road finisher (1) comprises a localization and/or navigation system (15),
    wherein in combination with the localization and/or navigation system (15), means are provided for ascertaining the current distance to and/or an expected time of arrival of some other road works vehicle,
    wherein said means are configured for generating a control signal for the controller (11) in order to induce via the controller (11) a starting or stopping of the motor (6).
  12. A machine according to claim 11, characterized in that the sensor (14) is a temperature sensor.
  13. A machine according to claim 12, characterized in that the temperature sensor (14) is configured for measuring the temperature of a screed (10) of the road finisher (1).
  14. A machine according to any of claims 11 to 13, characterized in that a timer for generating a control signal is provided.
  15. A machine according to any of claims 11 to 14, characterized in that the localization and/or navigation system (15) is infrared-transmitter-, radio- or satellite-based.
  16. A machine according to any of claims 11 to 15, characterized in that a starting device (12) is provided for starting the engine (6) in response to receipt of a respective control signal.
  17. A machine according to claim 16, characterized in that an energy store is provided for supplying the starting device (12) with energy also in the deactivated condition of the engine (6).
  18. A machine according to claim 17, characterized in that a battery (13) is provided as an energy store.
EP09008415.3A 2009-06-26 2009-06-26 Road finisher with automatic motor control Active EP2281947B2 (en)

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EP09008415.3A EP2281947B2 (en) 2009-06-26 2009-06-26 Road finisher with automatic motor control
PL09008415.3T PL2281947T5 (en) 2009-06-26 2009-06-26 Road finisher with automatic motor control
CN201020234322XU CN201972075U (en) 2009-06-26 2010-06-23 Self-driving processing machine for asphalt or concrete paving material
US12/821,970 US8517628B2 (en) 2009-06-26 2010-06-23 Road finisher with automatic engine controller
CN2010102071268A CN101929123B (en) 2009-06-26 2010-06-23 Road finisher with automatic motor control
US13/919,074 US20130287495A1 (en) 2009-06-26 2013-06-17 Road finisher with automatic engine controller

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EP2281947B1 EP2281947B1 (en) 2014-04-30
EP2281947B2 true EP2281947B2 (en) 2022-04-13

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CN101929123B (en) 2012-09-12
EP2281947B1 (en) 2014-04-30
CN101929123A (en) 2010-12-29
US8517628B2 (en) 2013-08-27
US20130287495A1 (en) 2013-10-31
PL2281947T5 (en) 2023-03-06
US20100329783A1 (en) 2010-12-30
PL2281947T3 (en) 2014-09-30
CN201972075U (en) 2011-09-14
EP2281947A1 (en) 2011-02-09

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