EP1036883A2 - Process for heating a screed of a road paver and electric heating device - Google Patents
Process for heating a screed of a road paver and electric heating device Download PDFInfo
- Publication number
- EP1036883A2 EP1036883A2 EP00105550A EP00105550A EP1036883A2 EP 1036883 A2 EP1036883 A2 EP 1036883A2 EP 00105550 A EP00105550 A EP 00105550A EP 00105550 A EP00105550 A EP 00105550A EP 1036883 A2 EP1036883 A2 EP 1036883A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- screed
- heating
- heating elements
- temperature
- heating device
- 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
Links
Images
Classifications
-
- 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
-
- 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
- E01C2301/00—Machine characteristics, parts or accessories not otherwise provided for
- E01C2301/10—Heated screeds
Definitions
- the invention relates to a method according to the preamble of patent claim 1 and an electric heating device according to the preamble of the subordinate Claim 9.
- the invention has for its object a method of the type mentioned and a screed heater suitable for performing the method specify with which an energy saving and long service life of the three-phase generator are achievable.
- the load on the alternator by temporarily switching on and off at least one heating element or switching between at least two heating elements reduced, so that the three-phase generator can cool down or its critical operating temperature not reached.
- An alternative or additive is that carried along by the installation material Heat is taken into account in order to save energy through the clocking and still one ensure sufficient heating of the screed.
- the timing is only useful controlled during the paving operation of the screed, for the first time Heating of the screed is not delayed and that of the paving material to use the heat carried along profitably when the paver is paving and there is sufficient external heat available.
- the management section may monitor various operating parameters on the side of power generation and in the paver to the removed Controlling performance to a permissible maximum, namely by modulated Switching the heating elements on and off, taking with them the installation material Heat used profitably, energy saved and the three-phase generator, e.g. protected against overload under unfavorable operating conditions.
- the clocking can then be activated in any case be when the operating temperature of the alternator by predetermined temperature value, e.g. 20 ° C, above the ideal operating temperature should be. As a rule, this is still far below the critical level Three-phase generator temperature threshold.
- predetermined temperature value e.g. 20 ° C
- the cycle times are expediently approximately 30 seconds. These are periods of time which have no noticeable influence on the installation quality or the tendency to become dirty the screed and make sure that none are clearly noticeable Temperature leaps occur in the screed.
- the operating temperature of the three-phase generator can be measured with high reliability determine by means of temperature sensitive resistors. Multiple temperature sensitive resistors are useful to monitor different temperature thresholds to be able to.
- a noticeable relief of the three-phase generator is already achieved if at Switch off the heating elements on one half of the planks at the same time the other half of the screed.
- the three-phase generator could be relieve even more by delaying between switching operations be respected. Alternatively, it would be possible to switch over with a time overlap.
- the delay times or temporal overlaps can be proportional to the temperature of the generator.
- Temperature-sensitive resistors placed in the winding of the three-phase generator tap the actual temperatures very reliably.
- the current current value is measured by means of a current transformer and on the basis the power value is calculated and reported to the section.
- a primary drive source Q usually a diesel engine, of the road paver, not shown drives a three-phase generator G, from the supply lines 1, 2 to two screed halves 3, 4 of the screed B or heating elements E integrated therein to lead.
- the heating elements E serve to heat working components of the screed. These working components are, for example, tamper bars N, smoothing plates R and optionally provided pressure bars L, which are at approximately the temperature of the paving material must be heated so that the paving material does not attached.
- the heater H has a control device C in which a microprocessor management section M is provided, in which various operating parameters of the Paver and / or the screed is monitored and used to control the heating device be taken into account.
- a heater pre-selection switch W connected, adjustable between positions "zero, automatic, manual” is. In the “zero” position, the heating device is switched off. In the “automatic” position the heating device H is automatically controlled, namely with an alternating cycle to protect the three-phase generator G and to save energy and to optimally regulate the maximum permissible heating output.
- the heating device H operated permanently and at full heating power. The protective measures for the generator can also be activated in the "hand” position.
- the microprocessor management section M receives information and measurements and confirmations from various connected facilities.
- temperature-sensitive resistors are distributed, which differ Monitor operating temperature thresholds and by type of sensors T submit the respective measured values.
- the output of the three-phase generator G is one Current monitoring D is provided for power control, which is also connected to the control device C is connected.
- the current monitor D is a current transformer, which is the current value of one of the three phases of the alternator Section M reports. It is due to a symmetrical power rating of the load possible to get by with the measurement of only one phase and based on this measurement to calculate the power per phase.
- the speed of the primary drive source Q is detected by a device Qn and reported to the control device C. Further an insulation monitoring device J is provided which is connected to the screed B is connected, is controlled by section M and a good or bad signal transmitted. Using a voltage regulator that is not highlighted, the Generator voltage kept constant at zero at 230 V per phase. The insulation monitoring device J measures the resistance between the live and the Neutral against earth. Therefore, the heating elements must have a PE conductor be grounded. If an insulation fault occurs, the insulation monitoring device J and reports the error. Section M then carries out troubleshooting and gives only fault-free circuits free.
- contactors S1 to S5 From the microprocessor management section M several contactors S1 to S5 controlled. Contactors S1 and S2 are included in supply lines 1, 2 and are controlled depending on the operating situation. It expediently acts are four-pole contactors. Another contactor S5 is for the power supply a possibly additional plank heating 7 provided, which either is operated permanently or, depending on the operating situation, is switched off.
- Additional contactors S3, S4 are provided for sockets F, expediently Schuko and / or CEE sockets.
- the CEE sockets and their leads are secured. Due to the high temperatures in the screed B, the hedge must be used be carried out on the paver, expediently by a Motor protection switch.
- the motor protection switch serves as line protection. Secured are all other supply lines. Because of the temperature compensation the motor protection switch can be set to the maximum permissible nominal current of the screed be interpreted.
- the CEE sockets can be used for frequency-independent Devices, e.g. Lighting equipment. On the Schuko sockets, however, are likely only 50 Hz devices can be connected. Give the two contactors S2, S4 approval for CEE and Schuko sockets F depending on the operating state and alternatively.
- thermosensors provided on the working components in the screed A connected to the microprocessor management section M.
- Sockets 8 attached to the screed B can be used for the heating elements of any extension parts 5, 6 attached to the power supply.
- the release of the heating device depends on the section M the Fulfills several conditions. These conditions for heating release are for example: heating pre-selection "manual or automatic"; depends on the Design of the three-phase generator G (heating only at the nominal speed of the primary drive source, or enable heating at idle and at nominal speed) Confirmation the presence of idle speed or full throttle speed; Insulation monitoring device J not addressed; and second alternator temperature threshold not reached.
- the heating device If the second three-phase generator temperature threshold is reached, then the heating device not released. The release takes place only after the Three-phase generator has cooled down and the heating pre-selector switch W is adjusted acknowledged to "zero".
- An insulation monitoring acknowledgment switch, the microprocessor management section M and the insulation monitoring device J are in a control box on the paver (not shown).
- the screed is connected via several wiring harnesses and CEE plugs (e.g. five wiring harnesses) connected to the control box.
- the heating process begins, controlled by the Section M. After starting the heating process, the different heating combinations controlled and the power requirement calculated per combination. The combinations are then ranked according to their performance. Then every combination checked for validity. The combination with the greatest valid performance is Approved.
- Thresholds Due to the linear characteristic of the temperature-dependent resistors, which in the Windings of the alternator G are housed, several Thresholds are set. If due to extreme conditions the generator Reached 20 ° C above its ideal operating temperature (warning threshold), the Regulation in section M, also in the "manual" switch position, for a clock cycle. This means that, for example, the heating elements E in the left half of the screed have a predetermined period of time, e.g. 30 seconds, be turned off, and only the heating elements stay switched on in the right half of the plank. After this elapse The heating elements in the right half of the screed are switched off and those of the left half of the planks switched on again. This is repeated continuously.
- a predetermined period of time e.g. 30 seconds
- Switch-off temperature threshold is set just below the critical temperature the generator winding. If this switch-off threshold is reached, an immediate one takes place Complete shutdown of the heating device. Only a few, all or only can be clocked a heating element can be switched on and off.
- the microprocessor management section M conducts the validity check of the release provided that the aforementioned conditions for heating release are met. Subsequently the section modulates the removed power to a maximum, so that the generator temperature always remains within the permissible range.
- the screed or the heating elements E must be heated until the Working components N, R, L are heated so far that the installation material on them and not stuck to the screed. After the time required for heating has elapsed can be started with the installation.
- the temperature of the paving material is about 170 ° C.
- the temperature and the temperature storage capacity of the screed Temperature in the working components, e.g. Smoothing plates, vibrators, tamper bars and pressing bars, to keep approximately constant, is actually no longer the full performance needed. Therefore, the switching cycle is controlled so that the right and left sides of the planks can be switched on alternately over approx. 30 seconds.
- the Three-phase generator G then only needs 50% of the total screed output deliver is less burdened. It also saves a lot of energy.
- the Alternating clocking is only activated when the screed is hot Paving material, i.e. during the installation phase. This happens after the paver's main switch is set to the "forward drive” position and the material conveying device is switched on and the diesel engine as the primary drive source runs at full throttle.
- the power is modulated in the "Automatic" position so that it remains at an allowable maximum, e.g. proportional to the generator temperature.
- the power is not modulated in the heating phase, but rather possibly clocked from a critical generator temperature.
- the "automatic" position there are therefore two possibilities of influence, which are used alternatively or additively can be.
- the "hand" position has, for example, at low ambient temperatures and / or cold installation material your justification.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Machines (AREA)
Abstract
Bei dem Verfahren zum Beheizen der Einbaubohle (B) eines Straßenfertigers, wobei in der Einbaubohle (B) eine Heizeinrichtung (H) mit mehreren von einem Drehstromgenerator (G) versorgten und über eine Steuervorrichtung (C) ein- und abschaltbaren Heizelementen (E) vorgesehen ist, werden zumindest zwei der Heizelemente (E) in Abhängigkeit von der Betriebstemperatur des Generators und/oder mit Einbaumaterial in Kontakt stehender Einbaubohlen-Komponenten mit einer Taktung periodisch wechselweise ein- und abgeschaltet. Die Heizeinrichtung (H) enthält in der Steuervorrichtung (C) eine Mikroprozessor-Management-Sektion (M) mit einer Programmierung zum wechselweisen Takten von Heizelementen unter Berücksichtigung einer bestimmten Kombination von Betriebsparametern. In the method for heating the screed (B) of a road paver, the screed (B) has a heating device (H) with a plurality of heating elements (E) supplied by a three-phase generator (G) and which can be switched on and off via a control device (C) , at least two of the heating elements (E) are periodically switched on and off alternately with a clock cycle depending on the operating temperature of the generator and / or screed components in contact with the paving material. The heating device (H) contains in the control device (C) a microprocessor management section (M) with programming for alternately clocking heating elements, taking into account a certain combination of operating parameters.
Description
Die Erfindung betrifft ein Verfahren gemäß dem Oberbegriff des Patentanspruchs 1 sowie eine elektrische Heizeinrichtung gemäß dem Oberbegriff des nebengeordneten Patentanspruchs 9.The invention relates to a method according to the preamble of patent claim 1 and an electric heating device according to the preamble of the subordinate Claim 9.
Bei Straßenfertigern ist es aus der Praxis bekannt, Arbeitskomponenten der Einbaubohle entweder elektrisch oder mit Gas zu beheizen. Dies betrifft insbesondere die sogenannten Tamper-Leisten, die Glättbleche und gegebenenfalls vorgesehene Pressleisten. Diese Arbeitskomponenten müssen erhitzt werden, bis das ebenfalls heiße Einbaumaterial nicht mehr zum Ankleben neigt. Die Temperatur des Einbaumaterials, das von der Einbaubohle eingebaut wird, beträgt z.B. ungefähr 170°C. Das Beheizen muss während des Einbaus fortgesetzt werden. Bei einer elektrischen Einbaubohlenheizeinrichtung sind beispielsweise elektrische Heizstäbe in der Einbaubohle verteilt, die über einen von der Primärantriebsquelle, meist einem Dieselmotor, getriebenen Drehstromgenerator mit Drehstrom versorgt werden. Gängige Praxis ist es, die Einbaubohlen-Heizeinrichtung permanent und mit voller Leistung zu betreiben. Dadurch wird jedoch der Drehstromgenerator, insbesondere bei ungünstigen Betriebsbedingungen, extrem belastet und/oder wird beträchtlich Energie vergeudet.In road pavers, it is known from practice that working components of the screed to be heated either electrically or with gas. This applies in particular to the so-called tamper strips, the smoothing plates and any provided Pressure bars. These working components have to be heated until that too hot installation material no longer tends to stick. The temperature of the paving material, that is installed by the screed is e.g. about 170 ° C. The Heating must continue during installation. With an electric screed heater are, for example, electric heating elements in the screed distributed over one of the primary drive source, usually a diesel engine, driven three-phase generator can be supplied with three-phase current. Common practice is operating the screed heating device permanently and at full power. As a result, however, the three-phase generator, especially in unfavorable operating conditions, extremely stressed and / or considerable energy is wasted.
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren der eingangs genannten Art und eine zum Durchführen des Verfahrens geeignete Einbaubohlen-Heizeinrichtung anzugeben, mit denen eine Energieeinsparung und lange Standzeiten des Drehstromgenerators erzielbar sind.The invention has for its object a method of the type mentioned and a screed heater suitable for performing the method specify with which an energy saving and long service life of the three-phase generator are achievable.
Die gestellte Aufgabe wird mit den Merkmalen des Anspruchs 1 und des nebengeordneten Anspruchs 9 gelöst.The task is with the features of claim 1 and the sibling Claim 9 solved.
Besteht aufgrund ungünstiger Betriebszustände die Gefahr eine Überbelastung bzw. Überhitzung des Drehstromgenerators, dann wird die Belastung des Drehstromgenerators durch zeitweises getaktetes Ein- und Ausschalten wenigstens eines Heizelementes bzw. Umschalten zwischen mindestens zwei Heizelementen verringert, so dass sich der Drehstromgenerator abkühlen kann bzw. seine kritische Betriebstemperatur nicht erreicht. Dabei wird der Erkenntnis Rechnung getragen, dass die aufgeheizten Arbeitskomponenten der Einbaubohle trotz Abschaltens ihrer Heizelemente eine relativ lange Nachlaufzeit haben, innerhalb derer keine spürbare Temperaturabsenkung eintritt, und dass auch in der Einbauphase das aufgeheizte Einbaumaterial genügend Wärme bereitstellt, so dass durch das Takten keine Einbau-Qualitätseinbuße eintritt und auch eine unzweckmäßige Verschmutzung der Arbeitskomponenten unterbleibt. Alternativ oder Additiv wird die durch das Einbaumaterial mitgeführte Wärme berücksichtigt, um durch die Taktung Energie einzusparen und trotzdem eine genügende Beheizung der Bohle sicherzustellen. Zweckmäßig wird die Taktung ausschließlich während des Einbaubetriebs der Einbaubohle eingesteuert, um eine erstmalige Aufheizung der Einbaubohle nicht zu verzögern und die vom Einbaumaterial mitgeführte Wärme gewinnbringend dann zu nutzen, wenn der Straßenfertiger in Einbaufahrt ist und genügend Fremdwärme zur Verfügung steht.If there is a risk of overloading or Overheating of the alternator, then the load on the alternator by temporarily switching on and off at least one heating element or switching between at least two heating elements reduced, so that the three-phase generator can cool down or its critical operating temperature not reached. The knowledge that the heated ones are taken into account Working components of the screed despite switching off its heating elements have a relatively long run-on time, during which there is no noticeable temperature drop occurs, and that even in the installation phase, the heated paving material provides enough heat so that there is no loss of installation quality due to clocking occurs and also an inappropriate contamination of the work components is omitted. An alternative or additive is that carried along by the installation material Heat is taken into account in order to save energy through the clocking and still one ensure sufficient heating of the screed. The timing is only useful controlled during the paving operation of the screed, for the first time Heating of the screed is not delayed and that of the paving material to use the heat carried along profitably when the paver is paving and there is sufficient external heat available.
In der Heizeinrichtung überwacht die Management-Sektion ggfs. verschiedene Betriebsparameter auf der Seite der Stromerzeugung und im Fertiger, um die abgenommene Leistung auf ein zulässiges Maximum zu steuern, und zwar durch moduliertes Ein- und Ausschalten von Heizelementen, wobei vom Einbaumaterial mitgeführte Wärme gewinnbringend genutzt, Energie eingespart und der Drehstromgenerator, z.B. unter ungünstigen Betriebskonditionen, gegen Überlastung geschützt werden.In the heating device, the management section may monitor various operating parameters on the side of power generation and in the paver to the removed Controlling performance to a permissible maximum, namely by modulated Switching the heating elements on and off, taking with them the installation material Heat used profitably, energy saved and the three-phase generator, e.g. protected against overload under unfavorable operating conditions.
Zur Sicherheit des Drehstromgenerators kann in jedem Fall dann die Taktung eingesteuert werden, wenn die Betriebstemperatur des Drehstromgenerators um einen vorbestimmten Temperaturwert, z.B. 20°C, oberhalb der idealen Betriebstemperatur liegen sollte. Dies ist im Regelfall noch ausreichend weit unterhalb der kritischen Temperaturschwelle des Drehstromgenerators. Durch eine Wechseltaktung lässt sich die Belastung für den Drehstromgenerator so weit vermindern, dass dieser wieder bis auf die ideale Betriebstemperatur abkühlt. To ensure the safety of the three-phase generator, the clocking can then be activated in any case be when the operating temperature of the alternator by predetermined temperature value, e.g. 20 ° C, above the ideal operating temperature should be. As a rule, this is still far below the critical level Three-phase generator temperature threshold. By alternating clocking reduce the load on the three-phase generator so far that it is up to cools down to the ideal operating temperature.
Zweckmäßigerweise wird zwischen den Heizelementen der linken und rechten Einbaubohlenhälften abwechselnd hin- und hergeschaltet. Dies bezieht natürlich auch Ausziehbohlenteile an den linken und rechten Grundbohlenhälften mit ein, und gegebenenfalls auch angebaute Verbreiterungsteile, die ebenfalls beheizt werden müssen. Während der Taktung braucht der Drehstromgenerator somit nur mehr etwa 50 % der maximalen Leistung abzugeben.Expediently, between the heating elements of the left and right screed halves alternately switched back and forth. Of course, this also applies Extending screed parts on the left and right halves of the screed, and if necessary also widened parts that also have to be heated. During the clocking, the three-phase generator thus only needs about 50% of the deliver maximum performance.
Zweckmäßigerweise betragen die Taktzeiten ca. 30 Sekunden. Dies sind Zeitspannen, die keinen spürbare Einfluss auf die Einbauqualität oder die Verschmutzungsneigung der Einbaubohle haben und sicherstellen, dass keine deutlich spürbaren Temperatursprünge in der Einbaubohle auftreten.The cycle times are expediently approximately 30 seconds. These are periods of time which have no noticeable influence on the installation quality or the tendency to become dirty the screed and make sure that none are clearly noticeable Temperature leaps occur in the screed.
Mitentscheidend für den Beginn der Taktung sind die Betriebsparameter "Fahrt des Fertigers, Förderung des Einbaumaterials und Nenndrehzahl der Primärantriebsquelle".The operating parameters "travel of the Paver, promotion of the paving material and nominal speed of the primary drive source ".
Mit hoher Zuverlässigkeit lässt sich die Betriebstemperatur des Drehstromgenerators mittels temperatursensitiver Widerstände ermitteln. Mehrere temperatursensitive Widerstände sind zweckmäßig, um unterschiedlichen Temperaturschwellen überwachen zu können.The operating temperature of the three-phase generator can be measured with high reliability determine by means of temperature sensitive resistors. Multiple temperature sensitive resistors are useful to monitor different temperature thresholds to be able to.
Eine spürbare Entlastung des Drehstromgenerators wird bereits erreicht, wenn bei Ausschalten der Heizelemente bei einer Bohlenhälfte gleichzeitig die Heizelemente der anderen Bohlenhälfte eingeschaltet werden. Es ließe sich der Drehstromgenerator noch mehr entlasten, indem zwischen den Umschaltvorgängen Verzögerungszeiten eingehalten werden. Alternativ wäre es möglich, mit zeitlicher Überlappung umzuschalten. Die Verzögerungszeiten bzw. zeitlichen Überlappungen können proportional zur Temperatur des Generators sein.A noticeable relief of the three-phase generator is already achieved if at Switch off the heating elements on one half of the planks at the same time the other half of the screed. The three-phase generator could be relieve even more by delaying between switching operations be respected. Alternatively, it would be possible to switch over with a time overlap. The delay times or temporal overlaps can be proportional to the temperature of the generator.
In der Wicklung des Drehstromgenerators platzierte, temperatursensitive Widerstände greifen die Ist-Temperaturen sehr zuverlässig ab. Temperature-sensitive resistors placed in the winding of the three-phase generator tap the actual temperatures very reliably.
Falls eine gegebenenfalls bohlenübergreifende Zusatzheizung vorgesehen sein sollte, wird diese zweckmäßigerweise von der Wechseltaktung ausgeschlossen.If there is to be an additional heating across the screed, this is expediently excluded from the switching cycle.
Über Schütze von der Sektion ansteuerbare Schuko- und/oder CEE-Steckdosen am Straßenfertiger und/oder der Einbaubohle gestatten es, zusätzliche Hilfseinrichtungen anzuschließen, z.B. Beleuchtungseinrichtungen für Wartung und/oder Nachtarbeit.Schuko and / or CEE sockets on the Asphalt pavers and / or the screed allow additional auxiliary equipment connect, e.g. Lighting devices for maintenance and / or night work.
Mittels eines Stromwandlers wird der aktuelle Stromwert gemessen und auf der Basis des Stromwerts die Leistung errechnet, und der Sektion gemeldet.The current current value is measured by means of a current transformer and on the basis the power value is calculated and reported to the section.
Damit die Taktung tatsächlich nur eingesteuert wird, wenn sie sinnvoll ist, unterdrückt der Heizungsvorwahlschalter in der "Hand"-Stellung das Wirksamwerden der Taktung.So that the clocking is actually only activated when it makes sense, suppressed the heating preselection switch in the "manual" position the clocking takes effect.
Zweckmäßig sind an der Einbaubohle weitere Steckdosen vorgesehen, an denen sich Heizelemente von Verbreiterungsteilen der Einbaubohle anschließen lassen. Diese Heizelemente der Verbreiterungsteile können an der Wechseltaktung teilnehmen.Expediently, further sockets are provided on the screed, on which Have heating elements of widening parts of the screed connected. This Heating elements of the widening parts can take part in the change cycle.
Anhand der Zeichnung werden das erfindungsgemäße Verfahren und eine Ausführungsform einer elektrischen Heizeinrichtung erläutert. Es zeigen:
- Fig. 1
- ist ein Blockschaltbild einer Ausführungsform einer elektrischen Heizeinrichtung einer Einbaubohle.
- Fig. 1
- is a block diagram of an embodiment of an electric screed screed.
Die wesentlichen Komponenten einer elektrischen Heizeinrichtung einer Einbaubohle B, die durch einen nicht gezeigten Straßenfertiger geschleppt wird, sind in dem Blockdiagramm in Fig. 1 schematisch dargestellt.The essential components of an electric screed heater B being towed by a paver, not shown, are in the block diagram shown schematically in Fig. 1.
Eine Primärantriebsquelle Q, meist ein Dieselmotor, des nicht gezeigten Straßenfertigers
treibt einen Drehstromgenerator G, von dem Versorgungsstränge 1, 2 zu den
beiden Bohlenhälften 3, 4 der Einbaubohle B bzw. dort integrierten Heizelementen E
führen. Die Heizelemente E dienen zum Beheizen von Arbeitskomponenten der Einbaubohle.
Diese Arbeitskomponenten sind beispielsweise Tamper-Leisten N, Glättbleche
R und gegebenenfalls vorgesehene Pressleisten L, die auf in etwa die Temperatur
des Einbaumaterials aufgeheizt werden müssen, damit das Einbaumaterial nicht
anhaftet.A primary drive source Q, usually a diesel engine, of the road paver, not shown
drives a three-phase generator G, from the
Die Heizeinrichtung H weist eine Steuervorrichtung C auf, in der eine Mikroprozessor-Management-Sektion M vorgesehen ist, in der verschiedene Betriebsparameter des Fertigers und/oder der Einbaubohle überwacht und für die Steuerung der Heizeinrichtung berücksichtigt werden. An die Steuervorrichtung C ist ein Heizungs-Vorwahlschalter W angeschlossen, der zwischen Positionen "Null, Automatik, Hand" verstellbar ist. In der Stellung "Null" ist die Heizeinrichtung abgeschaltet. In der Stellung "Automatik" wird die Heizeinrichtung H automatisch gesteuert, und zwar mit einer Wechseltaktung zum Schutz des Drehstromgenerators G und zur Energieeinsparung und um die maximale zulässige Heizleistung optimal zu regeln. In der Stellung "Hand" wird die Heizeinrichtung H permanent und mit voller Heizleistung betrieben. Die Schutzmaßnahmen für den Generator können auch in der Stellung "Hand" aktiviert sein.The heater H has a control device C in which a microprocessor management section M is provided, in which various operating parameters of the Paver and / or the screed is monitored and used to control the heating device be taken into account. At the control device C is a heater pre-selection switch W connected, adjustable between positions "zero, automatic, manual" is. In the "zero" position, the heating device is switched off. In the "automatic" position the heating device H is automatically controlled, namely with an alternating cycle to protect the three-phase generator G and to save energy and to optimally regulate the maximum permissible heating output. In the "hand" position the heating device H operated permanently and at full heating power. The protective measures for the generator can also be activated in the "hand" position.
Damit die Mikroprozessor-Management-Sektion M verschiedene Betriebsparameter berücksichtigen kann, erhält sie Informationen und Messungen und Bestätigungen von verschiedenen, angeschlossenen Einrichtungen. In der nicht gezeigten Wicklung des Drehstromgenerators G sind temperatursensitive Widerstände verteilt, die unterschiedliche Betriebstemperatur-Schwellwerte überwachen und nach Art von Sensoren T die jeweiligen Messwerte abgeben. Ausgangs des Drehstromgenerators G ist eine Stromüberwachung D zur Leistungssteuerung vorgesehen, die ebenfalls an die Steuervorrichtung C angeschlossen ist. Die Stromüberwachung D ist ein Stromwandler, der den aktuellen Stromwert einer der drei Phasen des Drehstromgenerators der Sektion M meldet. Aufgrund einer symmetrischen Leistungsauslegung der Last ist es möglich, mit der Messung nur einer Phase auszukommen und anhand dieser Messung die Leistung pro Phase zu berechnen. Die Drehzahl der Primärantriebsquelle Q wird durch eine Einrichtung Qn erfasst und der Steuervorrichtung C gemeldet. Ferner ist eine Isolations-Überwachungseinrichtung J vorgesehen, die an die Einbaubohle B angeschlossen ist, von der Sektion M angesteuert wird und ein Gut- oder Schlecht-Signal übermittelt. Mittels eines nicht hervorgehobenen Spannungsreglers wird die Generatorspannung konstant auf 230 V pro Phase gegen Null gehalten. Das Isolationsüberwachungsgerät J misst den Widerstand zwischen stromführenden und dem Nulleiter gegen die Erdung. Deshalb müssen die Heizelemente über einen PE-Leiter geerdet werden. Tritt ein Isolationsfehler auf, löst das Isolationsüberwachungsgerät J aus und meldet den Fehler. Die Sektion M führt dann eine Fehlersuche durch und gibt nur fehlerfreie Stromkreise frei.So that the microprocessor management section M different operating parameters can take into account, it receives information and measurements and confirmations from various connected facilities. In the winding, not shown of the three-phase generator G, temperature-sensitive resistors are distributed, which differ Monitor operating temperature thresholds and by type of sensors T submit the respective measured values. The output of the three-phase generator G is one Current monitoring D is provided for power control, which is also connected to the control device C is connected. The current monitor D is a current transformer, which is the current value of one of the three phases of the alternator Section M reports. It is due to a symmetrical power rating of the load possible to get by with the measurement of only one phase and based on this measurement to calculate the power per phase. The speed of the primary drive source Q is detected by a device Qn and reported to the control device C. Further an insulation monitoring device J is provided which is connected to the screed B is connected, is controlled by section M and a good or bad signal transmitted. Using a voltage regulator that is not highlighted, the Generator voltage kept constant at zero at 230 V per phase. The insulation monitoring device J measures the resistance between the live and the Neutral against earth. Therefore, the heating elements must have a PE conductor be grounded. If an insulation fault occurs, the insulation monitoring device J and reports the error. Section M then carries out troubleshooting and gives only fault-free circuits free.
Von der Mikroprozessor-Management-Sektion M werden mehrere Schütze S1 bis S5
angesteuert. Die Schütze S1 und S2 sind in den Versorgungssträngen 1, 2 enthalten
und werden je nach Betriebssituation angesteuert. Zweckmäßigerweise handelt es
sich dabei um vierpolige Schütze. Ein weiterer Schütz S5 ist für die Stromversorgung
einer gegebenenfalls bohlenübergreifenden Zusatzheizung 7 vorgesehen, die entweder
permanent betrieben wird oder, je nach Betriebssituation ausgeschaltet ist.From the microprocessor management section M several contactors S1 to S5
controlled. Contactors S1 and S2 are included in
Weitere Schütze S3, S4 sind vorgesehen für Steckdosen F, zweckmäßigerweise Schuko- und/oder CEE-Steckdosen. Die CEE-Steckdosen und ihre Zuleitungen sind abgesichert. Aufgrund der hohen Temperaturen in der Einbaubohle B muss die Absicherung am Straßenfertiger vorgenommen werden, zweckmäßigerweise durch einen Motorschutzschalter. Der Motorschutzschalter dient als Leitungsschutz. Abgesichert sind auch alle anderen Versorgungsstränge. Aufgrund der Temperaturkompensation kann der Motorschutzschalter genau auf den maximal zulässigen Nennstrom der Einbaubohle ausgelegt werden. Die CEE-Steckdosen sind nutzbar für frequenzunabhängige Geräte, z.B. Beleuchtungseinrichtungen. An die Schuko-Steckdosen dürften hingegen nur 50 Hz-Geräte angeschlossen werden. Die beiden Schütze S2, S4 geben die Freigabe für die CEE- und Schukosteckdosen F je nach Betriebszustand und alternativ.Additional contactors S3, S4 are provided for sockets F, expediently Schuko and / or CEE sockets. The CEE sockets and their leads are secured. Due to the high temperatures in the screed B, the hedge must be used be carried out on the paver, expediently by a Motor protection switch. The motor protection switch serves as line protection. Secured are all other supply lines. Because of the temperature compensation the motor protection switch can be set to the maximum permissible nominal current of the screed be interpreted. The CEE sockets can be used for frequency-independent Devices, e.g. Lighting equipment. On the Schuko sockets, however, are likely only 50 Hz devices can be connected. Give the two contactors S2, S4 approval for CEE and Schuko sockets F depending on the operating state and alternatively.
Ferner können in der Einbaubohle an den Arbeitskomponenten vorgesehene Temperatursensoren A an die Mikroprozessor-Management-Sektion M angeschlossen sein. Furthermore, temperature sensors provided on the working components in the screed A connected to the microprocessor management section M.
An der Einbaubohle B angebrachte Steckdosen 8 sind nutzbar, um die Heizelemente
von eventuell angebauten Verbreiterungsteilen 5, 6 an die Energieversorgung anzuschließen.Sockets 8 attached to the screed B can be used for the heating elements
of any
Die Freigabe der Heizungseinrichtung ist davon abhängig, dass die Sektion M die Erfüllung mehrerer Bedingungen feststellt. Diese Bedingungen zur Heizungsfreigabe sind beispielsweise: Heizungsvorwahl "Hand oder Automatik"; abhängig von der Auslegung des Drehstrom-Generators G (Heizung nur bei Nenndrehzahl der Primärantriebsquelle, oder Heizung bei Leerlauf- und bei Nenndrehzahl freigeben) Bestätigung des Vorliegens der Leerlaufdrehzahl oder der Vollgasdrehzahl; Isolationsüberwachungsgerät J nicht angesprochen; und zweite Drehstromgenerator-Temperaturschwelle nicht erreicht.The release of the heating device depends on the section M the Fulfills several conditions. These conditions for heating release are for example: heating pre-selection "manual or automatic"; depends on the Design of the three-phase generator G (heating only at the nominal speed of the primary drive source, or enable heating at idle and at nominal speed) Confirmation the presence of idle speed or full throttle speed; Insulation monitoring device J not addressed; and second alternator temperature threshold not reached.
Ist die zweite Drehstromgenerator-Temperaturschwelle erreicht, dann wird die Heizeinrichtung nicht freigegeben. Die Freigabe erfolgt erst dann wieder, nachdem der Drehstromgenerator abgekühlt ist und der Heizungsvorwahlschalter W durch Verstellen auf "Null" quittiert hat.If the second three-phase generator temperature threshold is reached, then the heating device not released. The release takes place only after the Three-phase generator has cooled down and the heating pre-selector switch W is adjusted acknowledged to "zero".
Ein Isolationsüberwachungsquittierungsschalter, die Mikroprozessor-Management-Sektion M und das Isolationsüberwachungsgerät J befinden sich in einem Schaltkasten am Straßenfertiger (nicht gezeigt).An insulation monitoring acknowledgment switch, the microprocessor management section M and the insulation monitoring device J are in a control box on the paver (not shown).
Die Einbaubohle wird über mehrere Leitungsstränge und CEE-Stecker (z.B. fünf Leitungsstränge) mit dem Schaltkasten verbunden.The screed is connected via several wiring harnesses and CEE plugs (e.g. five wiring harnesses) connected to the control box.
Falls nach Aktivieren des Heizungsvorwahlschalters W die vorerwähnten Bedingungen zur Heizungsfreigabe erfüllt sind, fängt der Heizprozess an, gesteuert durch die Sektion M. Nach Start des Heizprozesses werden die verschiedenen Heizkombinationen angesteuert und der Leistungsbedarf pro Kombination berechnet. Die Kombinationen werden dann nach fallender Leistung geordnet. Anschließend wird jede Kombination auf Gültigkeit geprüft. Die Kombination mit der größten gültigen Leistung wird freigegeben. If, after activating the heating preselection switch W, the aforementioned conditions for heating release are fulfilled, the heating process begins, controlled by the Section M. After starting the heating process, the different heating combinations controlled and the power requirement calculated per combination. The combinations are then ranked according to their performance. Then every combination checked for validity. The combination with the greatest valid performance is Approved.
Aufgrund der linearen Kennlinie der temperaturabhängigen Widerstände, die in den Wicklungen des Drehstromgenerators G untergebracht sind, können mehrere Schwellwerte festgelegt werden. Wenn durch extreme Bedingungen der Generator 20°C über seiner idealen Betriebstemperatur (Warnschwelle) erreicht, schaltet die Regelung in der Sektion M, auch in Schaltstellung "Hand", auf eine Taktung um. Dies bedeutet, dass beispielsweise die Heizelemente E in der linken Bohlenhälfte über eine vorbestimmte Zeitdauer, z.B. 30 Sekunden, abgeschaltet werden, und nur die Heizelemente in der rechten Bohlenhälfte eingeschaltet bleiben. Nach Verstreichen dieser Zeitdauer werden die Heizelemente in der rechten Bohlenhälfte abgeschaltet und diejenigen der linken Bohlenhälfte wieder eingeschaltet. Dies wird permanent wiederholt. Dadurch kann sich der Drehstromgenerator wieder abkühlen, vorausgesetzt es liegt kein Fehler vor, der zu einer weiteren Erhitzung führt. Eine weitere, sogenannte Abschalt-Temperaturschwelle ist festgesetzt knapp unter der kritischen Temperatur der Generatorwicklung. Wird diese Abschaltschwelle erreicht, erfolgt eine sofortige Komplettabschaltung der Heizeinrichtung. Es können getaktet nur einige, alle oder nur ein Heizelement ein- und ausgeschaltet werden.Due to the linear characteristic of the temperature-dependent resistors, which in the Windings of the alternator G are housed, several Thresholds are set. If due to extreme conditions the generator Reached 20 ° C above its ideal operating temperature (warning threshold), the Regulation in section M, also in the "manual" switch position, for a clock cycle. This means that, for example, the heating elements E in the left half of the screed have a predetermined period of time, e.g. 30 seconds, be turned off, and only the heating elements stay switched on in the right half of the plank. After this elapse The heating elements in the right half of the screed are switched off and those of the left half of the planks switched on again. This is repeated continuously. This allows the three-phase generator to cool down again, provided it there is no fault that leads to further heating. Another, so-called Switch-off temperature threshold is set just below the critical temperature the generator winding. If this switch-off threshold is reached, an immediate one takes place Complete shutdown of the heating device. Only a few, all or only can be clocked a heating element can be switched on and off.
Zur Gültigkeitsprüfung der Leistungsfreigabe werden nach Betätigen des Heizungsvorwahlschalters W die Leistungen der verschiedenen Heizkombinationen mit der Kennlinie der Generatortemperatur korreliert und dementsprechend freigegeben.To check the validity of the power release, press the heating preselector W the performance of the various heating combinations with the Characteristic curve of the generator temperature correlated and released accordingly.
Ist der Heizungsvorwahlschalter W auf "Automatik" (Normalbetrieb) gestellt, dann führt die Mikroprozessor-Management-Sektion M die Gültigkeitsprüfung der Freigabe durch, sofern die vorerwähnten Bedingungen zur Heizungsfreigabe erfüllt sind. Anschließend moduliert die Sektion die abgenommene Leistung auf ein Maximum, so dass die Generatortemperatur immer im zulässigen Bereich bleibt.If the heating selector switch W is set to "Automatic" (normal operation), then the microprocessor management section M conducts the validity check of the release provided that the aforementioned conditions for heating release are met. Subsequently the section modulates the removed power to a maximum, so that the generator temperature always remains within the permissible range.
Die Einbaubohle bzw. die Heizelemente E müssen solange aufgeheizt werden, bis die Arbeitskomponenten N, R, L so weit erhitzt sind, dass das Einbaumaterial daran und an der Bohle nicht festklebt. Nach Verstreichen der zum Aufheizen erforderlichen Zeit kann mit dem Einbau begonnen werden. Die Temperatur des Einbaumaterials beträgt ungefähr 170°C. Um in der Einbauphase aufgrund der durch das Einbaumaterial zugeführten Temperatur und der Temperaturspeicherfähigkeit der Einbaubohle die Temperatur in den Arbeitskomponenten, z.B. Glättblechen, Vibratoren, Tamperleisten und Pressleisten, in etwa konstant zu halten, wird eigentlich nicht mehr die volle Leistung benötigt. Deshalb wird die Wechseltaktung eingesteuert, so dass die rechten und linken Seiten der Bohlen wechselnd über ca. 30 Sekunden eingeschaltet werden. Der Drehstromgenerator G braucht dann nur noch 50 % der Bohlengesamtleistung zu liefern, wird dadurch weniger belastet. Außerdem wird beträchtlich Energie eingespart.The screed or the heating elements E must be heated until the Working components N, R, L are heated so far that the installation material on them and not stuck to the screed. After the time required for heating has elapsed can be started with the installation. The temperature of the paving material is about 170 ° C. To in the installation phase due to the supplied by the installation material The temperature and the temperature storage capacity of the screed Temperature in the working components, e.g. Smoothing plates, vibrators, tamper bars and pressing bars, to keep approximately constant, is actually no longer the full performance needed. Therefore, the switching cycle is controlled so that the right and left sides of the planks can be switched on alternately over approx. 30 seconds. The Three-phase generator G then only needs 50% of the total screed output deliver is less burdened. It also saves a lot of energy.
Bei einer Betriebstemperatur des Generators unterhalb der Warnschwelle wird die Wechseltaktung wird nur eingesteuert, wenn sich die Einbaubohle auf dem heißen Einbaumaterial befindet, d.h. während der Einbauphase. Dies geschieht, nachdem der Fahrhauptschalter des Fertigers auf die Stellung für "Vorwärtsfahrt" gestellt und die Materialfördervorrichtung eingeschaltet sind und der Dieselmotor als Primärantriebsquelle mit Vollgas läuft.At an operating temperature of the generator below the warning threshold, the Alternating clocking is only activated when the screed is hot Paving material, i.e. during the installation phase. This happens after the paver's main switch is set to the "forward drive" position and the material conveying device is switched on and the diesel engine as the primary drive source runs at full throttle.
In der Aufheizphase wird bei der Stellung "Automatik" die Leistung moduliert, so dass sie an einem zulässigen Maximum bleibt, z.B. proportional zur Generatortemperatur. In der Stellung "Hand" wird in der Aufheizphase die Leistung nicht moduliert, sondern allenfalls ab einer kritischen Generatortemperatur getaktet. In der Stellung "Automatik" gibt es demzufolge zwei Einflussmöglichkeiten, die alternativ oder additiv eingesetzt werden können.In the heating phase, the power is modulated in the "Automatic" position so that it remains at an allowable maximum, e.g. proportional to the generator temperature. In the "manual" position, the power is not modulated in the heating phase, but rather possibly clocked from a critical generator temperature. In the "automatic" position there are therefore two possibilities of influence, which are used alternatively or additively can be.
Die Stellung "Hand" hat beispielsweise bei niedriger Umgebungstemperatur und/oder kaltem Einbaumaterial ihre Berechtigung.The "hand" position has, for example, at low ambient temperatures and / or cold installation material your justification.
Claims (17)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19912248A DE19912248A1 (en) | 1999-03-18 | 1999-03-18 | Process for heating the screed of a paver, and electrical heating device |
DE19912248 | 1999-03-18 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1036883A2 true EP1036883A2 (en) | 2000-09-20 |
EP1036883A3 EP1036883A3 (en) | 2002-07-10 |
EP1036883B1 EP1036883B1 (en) | 2004-07-14 |
Family
ID=7901537
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00105550A Expired - Lifetime EP1036883B1 (en) | 1999-03-18 | 2000-03-16 | Process for heating a screed of a road paver and corresponding road paver |
Country Status (3)
Country | Link |
---|---|
US (1) | US6421594B1 (en) |
EP (1) | EP1036883B1 (en) |
DE (2) | DE19912248A1 (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003008898A1 (en) * | 2001-07-16 | 2003-01-30 | Werth Messtechnik Gmbh | Co-ordinate measuring device with additional heat source |
EP1295990A3 (en) * | 2001-09-24 | 2004-01-07 | Caterpillar Paving Products Inc. | Heating control system for a screed |
EP1557492A3 (en) * | 2004-01-22 | 2007-11-14 | Joseph Voegele AG | Apparatus for function monitoring |
EP2372022A1 (en) | 2010-03-23 | 2011-10-05 | Joseph Vögele AG | Street construction machine |
CN102828457A (en) * | 2011-06-15 | 2012-12-19 | 约瑟夫福格勒公司 | Road finisher with coating measuring device |
WO2014124545A1 (en) | 2013-02-14 | 2014-08-21 | Ammann Schweiz Ag | Method for heating a paver screed |
DE102013008032A1 (en) | 2013-05-13 | 2014-11-13 | Dynapac Gmbh | Method and device for electrically heating a paver screed |
DE102021120008A1 (en) | 2021-08-02 | 2023-02-02 | Generator.Technik.Systeme Gmbh & Co. Kg | Road construction machine, alternator and method of operating the road construction machine and dimensioning the alternator |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB0115039D0 (en) * | 2001-06-20 | 2001-08-08 | Finning Uk Ltd | Electrically heated paving screed |
US7050279B2 (en) * | 2002-04-05 | 2006-05-23 | Smc Electrical Products, Inc. | Method and apparatus for high impedance grounding of medium voltage AC drives |
GB2392190B (en) * | 2002-08-16 | 2005-12-21 | Roads Europ Ltd | Improved road repair systems |
DE102004002658A1 (en) * | 2004-01-19 | 2005-08-11 | Joseph Voegele Ag | pavers |
EP1566484A1 (en) * | 2004-02-23 | 2005-08-24 | BITELLI S.p.A. | Control for screed heaters |
US7121763B1 (en) | 2004-09-10 | 2006-10-17 | Roadtec, Inc. | Folding end gate for screed assembly |
DE202008010719U1 (en) * | 2008-08-12 | 2008-10-09 | Joseph Vögele AG | conveyor system |
EP2281947B2 (en) † | 2009-06-26 | 2022-04-13 | Joseph Vögele AG | Road finisher with automatic motor control |
US8297875B1 (en) | 2011-06-21 | 2012-10-30 | Caterpillar Paving Products Inc. | Screed heating control |
US8636442B1 (en) * | 2012-12-14 | 2014-01-28 | Caterpillar Paving Products Inc. | Integrated generator for screed plate heat up |
CN104088216B (en) * | 2014-06-26 | 2016-07-06 | 湖南三一路面机械有限公司 | The ironing machine of a kind of paver and paver |
DE102015012298A1 (en) | 2015-09-23 | 2017-03-23 | Abg Allgemeine Baumaschinen-Gesellschaft Mbh | Method of operating a self-propelled road paver and paver therefor |
US9811952B2 (en) * | 2016-03-31 | 2017-11-07 | Caterpillar Paving Products Inc. | System and method for monitoring a condition of a paving machine |
EP3241947A1 (en) * | 2016-05-02 | 2017-11-08 | Joseph Vögele AG | Screed with a fastening device for a heating element |
PL3382099T3 (en) | 2017-03-29 | 2019-09-30 | Joseph Vögele AG | Road finisher with heating element for a screed |
PL3527721T3 (en) | 2018-02-19 | 2021-05-04 | Joseph Vögele AG | Road finisher with output adjusters for electrical insert heating devices |
EP3859084A1 (en) | 2020-01-30 | 2021-08-04 | Joseph Vögele AG | Power supply for on-board heating of a road construction machine |
EP3945159B1 (en) | 2020-07-29 | 2024-03-27 | Joseph Vögele AG | Switching device for an electric slab heating device of a road finisher |
EP4183925A1 (en) * | 2021-11-18 | 2023-05-24 | Joseph Vögele AG | Heating system for a construction machine |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4347016A (en) * | 1980-08-21 | 1982-08-31 | Sindelar Robert A | Method and apparatus for asphalt paving |
GB2128374B (en) * | 1982-09-21 | 1986-01-08 | Dimplex Heating Ltd | Temperature controller for heating apparatus |
NL8900749A (en) * | 1989-03-28 | 1990-10-16 | Philips Nv | STEAM IRON. |
US5280422A (en) * | 1990-11-05 | 1994-01-18 | Watlow/Winona, Inc. | Method and apparatus for calibrating and controlling multiple heaters |
CA2061682C (en) * | 1992-02-21 | 1999-03-16 | Patrick C. Wiley | Process for recycling a paved surface and apparatus therefor |
DE4309031A1 (en) * | 1992-03-30 | 1993-10-21 | Licentia Gmbh | Method for operating several thyristor controllers connected in parallel |
US5417516A (en) * | 1993-07-20 | 1995-05-23 | Universal Screed Inc. | Electrically heated paving screed |
DE19537691C5 (en) * | 1994-10-10 | 2004-11-11 | T. F. Trading A/S | Multi-channel control system for a road construction machine for heating the sole plates of the screed |
JP3592792B2 (en) * | 1995-04-21 | 2004-11-24 | 北日本電線株式会社 | Automatic load heating control mechanism |
US5832178A (en) * | 1996-06-25 | 1998-11-03 | Crafco, Incorporated | Hot melt mix applicator with electrically heated hose and wand with temperature-controlled electric generator |
US5763858A (en) * | 1996-10-03 | 1998-06-09 | Jones; Thaddeus M. | Automatically controlled ice and snow melting system including a two-wire remote control |
US6127653A (en) * | 1998-06-02 | 2000-10-03 | Samuels; Gladestone | Method and apparatus for maintaining driveways and walkways free of ice and snow |
US6227762B1 (en) * | 1998-09-03 | 2001-05-08 | Wesley Van Velsor | Paving apparatus and method |
US6172647B1 (en) * | 1998-11-06 | 2001-01-09 | Msx, Inc. | Remote control for use with a deicing apparatus |
-
1999
- 1999-03-18 DE DE19912248A patent/DE19912248A1/en not_active Withdrawn
-
2000
- 2000-03-16 EP EP00105550A patent/EP1036883B1/en not_active Expired - Lifetime
- 2000-03-16 DE DE50007035T patent/DE50007035D1/en not_active Expired - Lifetime
- 2000-03-16 US US09/527,114 patent/US6421594B1/en not_active Expired - Lifetime
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003008898A1 (en) * | 2001-07-16 | 2003-01-30 | Werth Messtechnik Gmbh | Co-ordinate measuring device with additional heat source |
EP1295990A3 (en) * | 2001-09-24 | 2004-01-07 | Caterpillar Paving Products Inc. | Heating control system for a screed |
US7641419B1 (en) | 2001-09-24 | 2010-01-05 | Caterpillar Paving Products Inc | Heating control system for a screed |
US7993075B2 (en) | 2001-09-24 | 2011-08-09 | Caterpillar Paving Products Inc. | Heating control system for a screed |
EP1557492A3 (en) * | 2004-01-22 | 2007-11-14 | Joseph Voegele AG | Apparatus for function monitoring |
US7635829B2 (en) | 2004-01-22 | 2009-12-22 | Joseph Voegele Ag | Function-supervising device |
EP2372022A1 (en) | 2010-03-23 | 2011-10-05 | Joseph Vögele AG | Street construction machine |
US8784003B2 (en) | 2010-03-23 | 2014-07-22 | Joseph Vogele Ag | Road construction machine particularly a road finisher or road finisher feeder |
CN102828457A (en) * | 2011-06-15 | 2012-12-19 | 约瑟夫福格勒公司 | Road finisher with coating measuring device |
CN102828457B (en) * | 2011-06-15 | 2015-08-19 | 约瑟夫福格勒公司 | There is the sub-base grader of thickness measureing equipment |
WO2014124545A1 (en) | 2013-02-14 | 2014-08-21 | Ammann Schweiz Ag | Method for heating a paver screed |
DE102013008032A1 (en) | 2013-05-13 | 2014-11-13 | Dynapac Gmbh | Method and device for electrically heating a paver screed |
DE102013008032B4 (en) | 2013-05-13 | 2023-12-21 | Dynapac Gmbh | Method and device for electrically heating a paver screed |
DE102021120008A1 (en) | 2021-08-02 | 2023-02-02 | Generator.Technik.Systeme Gmbh & Co. Kg | Road construction machine, alternator and method of operating the road construction machine and dimensioning the alternator |
Also Published As
Publication number | Publication date |
---|---|
EP1036883A3 (en) | 2002-07-10 |
US6421594B1 (en) | 2002-07-16 |
DE19912248A1 (en) | 2000-09-21 |
DE50007035D1 (en) | 2004-08-19 |
EP1036883B1 (en) | 2004-07-14 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1036883B1 (en) | Process for heating a screed of a road paver and corresponding road paver | |
EP2989474B1 (en) | Provision of information on an ageing status of a semiconductor component | |
EP3382099B1 (en) | Road finisher with heating element for a screed | |
EP3527721B1 (en) | Road finisher with output adjusters for electrical insert heating devices | |
DE112018007053T5 (en) | Vehicle Mounted Charger and Control Method for a Vehicle Mounted Charger | |
DE112013005529T5 (en) | Integrated generator for heating a screed | |
EP2956584B1 (en) | Method for heating a paver screed | |
WO2007033825A1 (en) | Method for controlling a group of glow plugs for a diesel engine | |
EP0356667B1 (en) | Fuel filter, especially for diesel engines, with electrical resistance heating | |
DE102006010083A1 (en) | Glow plugs group controlling method for diesel engine, involves calculating electric resistance of glow plugs by subtracting resistance of supply line of plug glowing element during engine operation | |
DE102020116424A1 (en) | Method and electronic device for temperature monitoring of power electronics and motor vehicles | |
DE102020101193A1 (en) | Electrical circuit breaker system with temperature-dependent total current monitoring | |
EP1630013A1 (en) | Electric supplementary heating for vehicles with current safety | |
EP1193756B1 (en) | Method for a device with power semiconductors and an apparatus | |
EP0224689A1 (en) | Device for monitoring the temperature of direct current shunt dynamos for rotary printing machines | |
DE102006032698A1 (en) | Electrical heating system controlling method for use in e.g. dish washer, involves controlling electrical heating system based on actual resistance values and change of resistance values of electrical resistor heating unit | |
EP3363260A1 (en) | High-voltage vehicle heater and method for using recuperation power in a vehicle | |
EP3051024B1 (en) | Method for monitoring a plank heater of a road finishing machine | |
DE3422485A1 (en) | Method and device for limiting the current of an electric motor | |
EP0559726A1 (en) | Process and device for finding the load and/or loadability of electronically controlled components or groups of components. | |
DE10203051A1 (en) | Method and device for temperature-dependent control of the power of an electrical device | |
EP1630923B1 (en) | Control circuit for a plurality of electrical loads with a safeguard for the semiconductor switches | |
DE2935807A1 (en) | Overload protection circuit - has PTC resistor in series with load and shunted by overload warning lamp | |
DE20305577U1 (en) | Road repairer has electric heater for pile installation and with monitoring circuit for heater | |
DE102004055850B4 (en) | Water heaters, instantaneous water heaters and methods |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
RIC1 | Information provided on ipc code assigned before grant |
Free format text: 7E 01C 19/48 A, 7H 05B 1/02 B |
|
17P | Request for examination filed |
Effective date: 20020827 |
|
17Q | First examination report despatched |
Effective date: 20021209 |
|
AKX | Designation fees paid |
Designated state(s): DE FR GB IT |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
RTI1 | Title (correction) |
Free format text: PROCESS FOR HEATING A SCREED OF A ROAD PAVER AND CORRESPONDING ROAD PAVER |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE FR GB IT |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 20040714 |
|
REF | Corresponds to: |
Ref document number: 50007035 Country of ref document: DE Date of ref document: 20040819 Kind code of ref document: P |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: GERMAN |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20050303 Year of fee payment: 6 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20050316 Year of fee payment: 6 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FD4D |
|
ET | Fr: translation filed | ||
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed |
Effective date: 20050415 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20060316 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20060316 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20061130 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20060331 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R082 Ref document number: 50007035 Country of ref document: DE Representative=s name: GRUENECKER, KINKELDEY, STOCKMAIR & SCHWANHAEUS, DE |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R081 Ref document number: 50007035 Country of ref document: DE Owner name: JOSEPH VOEGELE AG, DE Free format text: FORMER OWNER: JOSEPH VOEGELE AG, 68163 MANNHEIM, DE Effective date: 20120217 Ref country code: DE Ref legal event code: R082 Ref document number: 50007035 Country of ref document: DE Representative=s name: GRUENECKER, KINKELDEY, STOCKMAIR & SCHWANHAEUS, DE Effective date: 20120217 Ref country code: DE Ref legal event code: R082 Ref document number: 50007035 Country of ref document: DE Representative=s name: GRUENECKER PATENT- UND RECHTSANWAELTE PARTG MB, DE Effective date: 20120217 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20190328 Year of fee payment: 20 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20190329 Year of fee payment: 20 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R071 Ref document number: 50007035 Country of ref document: DE |