EP1982812A2 - Control for mixer truck - Google Patents

Control for mixer truck Download PDF

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Publication number
EP1982812A2
EP1982812A2 EP08006847A EP08006847A EP1982812A2 EP 1982812 A2 EP1982812 A2 EP 1982812A2 EP 08006847 A EP08006847 A EP 08006847A EP 08006847 A EP08006847 A EP 08006847A EP 1982812 A2 EP1982812 A2 EP 1982812A2
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EP
European Patent Office
Prior art keywords
control
operating lever
mixer
drum
control according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP08006847A
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German (de)
French (fr)
Other versions
EP1982812B1 (en
EP1982812B2 (en
EP1982812A3 (en
Inventor
Werner Frey
Berthold Ruf
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Liebherr Mischtecknik GmbH
Original Assignee
Liebherr Mischtecknik GmbH
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Application filed by Liebherr Mischtecknik GmbH filed Critical Liebherr Mischtecknik GmbH
Priority to PL08006847T priority Critical patent/PL1982812T5/en
Publication of EP1982812A2 publication Critical patent/EP1982812A2/en
Publication of EP1982812A3 publication Critical patent/EP1982812A3/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
    • B28C5/42—Apparatus specially adapted for being mounted on vehicles with provision for mixing during transport
    • B28C5/4203—Details; Accessories
    • B28C5/4206—Control apparatus; Drive systems, e.g. coupled to the vehicle drive-system
    • B28C5/422—Controlling or measuring devices

Definitions

  • the invention relates to a control for truck mixer according to the preamble of claim 1.
  • Truck mixers each have a hydraulically driven mixer drum, wherein the hydraulic pump of the mixer drive is driven by the drive motor of the truck mixer.
  • the hydraulic pump of the mixer drive at the power take-off of the truck engine, usually an internal combustion engine, flanged. At very low engine speeds, the torque taken off the power take-off may not be so high as to avoid engine damage. Therefore, the engine speed is raised to a required minimum speed as soon as the drum is to be moved.
  • the object of the present invention is to provide a controller for a mixer drive of truck mixers, which on the one hand is user-friendly for the driver and, on the other hand, engine-friendly and consumption-optimized for the drive motor of the truck mixer.
  • a truck mixer control is provided with a hydraulically driven mixer drum, wherein the hydraulic pump of the mixer drive is driven by the drive mixer of the truck mixer or a separate motor. Furthermore, the speed of the drive motor is adjustable in dependence on the requested drum speed, wherein the desired drum speed is adjustable via an operating lever.
  • the driver can control the rotational movement of the mixer drum of the truck mixer in accordance with the familiar feel for a mechanical lever operation, wherein the speed of the engine is automatically adjusted in response to the requested drum by means of the operating lever drum speed.
  • the internal combustion engine can be operated by this automatic setting in the optimum speed range, so that it minimizes engine noise and minimizes consumption.
  • the driver however, the decision is taken in this solution to have to adjust the correct speed of the engine. Thus, he can concentrate on the actual work.
  • the familiar to many drivers sense of mechanical lever operation is connected according to the present invention with the benefits of electrical control.
  • the signals from the operating lever can be transferred without contact to the controller.
  • a non-contact control of the operating lever can be implemented for example via Hall sensors. These Hall sensors pick up the position of the control lever and pass it on to the controller. Due to this non-contact signal transfer, a high level of functional reliability is ensured, since the operating lever is thereby protected against dirt and moisture.
  • the required speed of the drive motor is determined taking into account the engine map.
  • a key control element In addition to the operating lever may additionally be provided a key control element. If necessary, the same control functions can be implemented via this key control element as is the case with the operating lever.
  • acceleration and deceleration ramps can be adapted individually and load-dependent via the key control element.
  • the operating lever is pivoted from a central position by 45 ° to two sides, the drum speed is changed proportionally to the deflection.
  • the operating lever may additionally comprise a control knob, wherein a switching signal for quick stop of the mixer drum can be activated by the button operation.
  • the key-operated element can advantageously be manufactured in a two-component plastic construction, wherein the keys and the body made of a hard plastic and the combination of keys and body made of a soft plastic. As a result, a dirt-resistant, jet-water-proof and detergent-resistant control is realized.
  • FIG. 1 a conventional construction truck mixer 10 is shown, which has a hydraulically driven mixer drum 12 in addition to the internal combustion engine, not shown here as a drive motor.
  • the mixer drum is driven in a known manner via a hydraulic mixer drive.
  • the hydraulic pump of this hydraulic mixer drive is flanged to the power take-off of the driving mixer driving internal combustion engine.
  • the truck mixer 10 has a controller for the mixer drive.
  • the controller has two operating systems 14 and 17.
  • the operating system 14 is constructed in three parts and comprises an operating lever 16, a control unit 18 with a keypad 20 and a screen 22 and a console 24 with an emergency stop switch 26 (see. FIG. 3 ).
  • This operating part 14 is arranged laterally in the rear area of the truck mixer 10, as shown in FIG FIG. 1 is shown.
  • a further control unit 17 is provided in the driver's cab, which consists of a lower shell 28 and a control panel 30.
  • This keypad has a similar structure to the aforementioned keypad 18, since it also has a keypad 32 and a display 34.
  • All operating elements, namely the operating part 17 and the operating elements 16, 18 and 26 of the operating part 14 are via a BUS, For example, CAN-BUS with the hydraulic control, the traction motor control or a separate motor control (if a separate engine should still be present), a possibly existing radio remote control and an optionally existing telematics system, such as.
  • a GPRS status detector connected.
  • the operating system As a whole, all intended functions of the truck mixer assembly are to be operated and visualized.
  • the operation can now take place at several points on the truck mixer, that is on the control element 14 outside the driver mixer (possibly wired) and additionally in the cab via the control element 17.
  • the BUS allows communication between the components of the control system and the hydraulic control.
  • the keypads 20 and 32 in the control units 18 and 30 have twelve keys in which all functions of the drum structure can be controlled. In the simple case only three buttons are used.
  • An respectively provided LED icon 23 on the screen 22 or 36 on the display 34 shows the drum speed.
  • Other LED bars visualize the rotational movement of the drum as running light.
  • the rotational speed of the drive motor of the truck mixer that is, in the present case, an internal combustion engine, is set in response to the requested drum speed due to an automatic control.
  • the drum speed of the mixer drum 12 is adjusted via the operating lever 16.
  • the operating lever from a central position by, for example, 45 ° to two sides pivoted, the drum speed is changed proportionally to the deflection.
  • the drum rotates in one or the opposite direction.
  • FIG. 4 Based on FIG. 4 can be read from the zero position of the force curve for the lever deflection of the operating lever 16 out. Depending on the angular position, the force required to deflect the lever increases. It's about feather balls or similar four tactile feedback items defined in the FIG. 4 are shown. At these points, the serving driver notices a small resistance, which gives him an indication of the reached position of the operating lever 16.
  • the operating lever 16 additionally has a control knob 38.
  • a non-contact switching pulse is switched, which leads to a quick stop or memory button of the mixer drum 12.
  • This switching signal of the control knob 38 or the respective degree of deflection of the operating lever 16 is transmitted in digitized form via the bus to the engine control.
  • the engine control now ensures that the internal combustion engine is operated at a speed which is necessary in order to be able to drive the mixer drum 12 at the preselected rotational speed via the hydraulic pump of the hydraulic drive.
  • This means that the drum speed adjustment is intuitive, which means that the driver as in the widespread manual control the drum speed "blind" control by the lever feel and can even control with this control.
  • the driver just does not have to worry about the speed of the engine.
  • the control of the mixer drive can be done not only by the operating lever 16 but also by the key 20 and 32.
  • the control units 14 and 17 are in the present embodiment jet-proof and detergent-resistant and insensitive to dirt. This is achieved in the operating lever 16 in that it passes its signals without contact to the controller. This is possible with the operating lever 16 by Hall sensors, not shown here, which query the respective position of the operating lever and give as a signal via the bus to the controller.
  • the key elements 20 and 32 are in turn made together with the respective housing in a two-component plastic construction, wherein the keys and the body made of a hard plastic and the combination of keys and body made of a soft plastic. Because of this one-piece design, the entire device is dirt-insensitive. The locking of the control panels is possible to prevent unauthorized and accidental operation. In addition, a maintenance indicator can be shown on the display.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Toys (AREA)

Abstract

Control device for a concrete mixer lorry (10) with a hydraulically driven mixing drum (12) adjusts the speed of a drive motor driving the hydraulic pump of the mixing drive in accordance with the required drum speed. The drum speed is adjusted via an operating lever. Preferred Features: The signals from the operating lever are transferred in a contact-free manner to the control device. The drive motor is a diesel engine.

Description

Die Erfindung betrifft eine Steuerung für Fahrmischer nach dem Oberbegriff des Anspruchs 1.The invention relates to a control for truck mixer according to the preamble of claim 1.

Fahrmischer weisen jeweils eine hydraulisch angetriebene Mischertrommel auf, wobei die Hydraulikpumpe des Mischerantriebs vom Antriebsmotor des Fahrmischers angetrieben wird. Üblicherweise ist die Hydraulikpumpe des Mischerantriebs am Nebenabtrieb des LKW-Motors, üblicherweise eines Verbrennungsmotors, angeflanscht. Bei sehr niedriger Drehzahl des Verbrennungsmotors darf das am Nebenabtrieb abgenommene Drehmoment nicht so hoch sein, um Motorschäden zu vermeiden. Deshalb wird die Motordrehzahl auf eine geforderte Mindestdrehzahl angehoben, sobald die Trommel bewegt werden soll.Truck mixers each have a hydraulically driven mixer drum, wherein the hydraulic pump of the mixer drive is driven by the drive motor of the truck mixer. Usually, the hydraulic pump of the mixer drive at the power take-off of the truck engine, usually an internal combustion engine, flanged. At very low engine speeds, the torque taken off the power take-off may not be so high as to avoid engine damage. Therefore, the engine speed is raised to a required minimum speed as soon as the drum is to be moved.

Üblicherweise lassen die Fahrer den Verbrennungsmotor mit hoher Drehzahl drehen, um genügend Reserven für die Trommeldrehzahl zu haben. Derartig hohe Drehzahlen des Verbrennungsmotors sind aber häufig zum Antrieb der Trommel mit der gewünschten Trommeldrehzahl unnötig. Dies führt zum unnötig starken Verschleiß, hoher Geräuschemission und hohem Verbrauch des Verbrennungsmotors.Usually, the drivers make the engine rotate at high speed to have enough reserves for the drum speed. However, such high speeds of the internal combustion engine are often unnecessary for driving the drum with the desired drum speed. This leads to unnecessarily strong Wear, high noise emission and high consumption of the internal combustion engine.

Aufgabe der vorliegenden Erfindung ist es, eine Steuerung für einen Mischerantrieb von Fahrmischern zu schaffen, die einerseits für den Fahrer bedienfreundlich und andererseits für den Antriebsmotor des Fahrmischers motorschonend und verbrauchsoptimiert ist.The object of the present invention is to provide a controller for a mixer drive of truck mixers, which on the one hand is user-friendly for the driver and, on the other hand, engine-friendly and consumption-optimized for the drive motor of the truck mixer.

Erfindungsgemäß wird diese Aufgabe durch die Kombination der Merkmale des Anspruchs 1 gelöst. Demnach ist eine Steuerung für Fahrmischer mit einer hydraulisch angetriebenen Mischertrommel vorgesehen, wobei die Hydraulikpumpe des Mischerantriebs von dem Antriebsmotor des Fahrmischers oder einem separaten Motor angetrieben wird. Des weiteren ist die Drehzahl des Antriebsmotors in Abhängigkeit von der angeforderten Trommeldrehzahl einstellbar, wobei die gewünschte Trommeldrehzahl über einen Bedienhebel einstellbar ist.According to the invention this object is achieved by the combination of the features of claim 1. Accordingly, a truck mixer control is provided with a hydraulically driven mixer drum, wherein the hydraulic pump of the mixer drive is driven by the drive mixer of the truck mixer or a separate motor. Furthermore, the speed of the drive motor is adjustable in dependence on the requested drum speed, wherein the desired drum speed is adjustable via an operating lever.

Erfindungsgemäß kann der Fahrer entsprechend dem ihm vertrauten Gefühl für eine mechanische Hebelbedienung die Drehbewegung der Mischertrommel des Fahrmischers steuern, wobei die Drehzahl des Verbrennungsmotors automatisch in Abhängigkeit von der mittels des Bedienhebels angeforderten Trommeldrehzahl eingestellt wird. Damit kann der Verbrennungsmotor durch diese automatische Einstellung im optimalen Drehzahlbereich betrieben werden, so dass er motorschonend, Geräusch minimiert und verbrauchsoptimiert läuft. Dem Fahrer wird dagegen bei dieser Lösung die Entscheidung abgenommen, die richtige Drehzahl des Verbrennungsmotors einstellen zu müssen. Somit kann er sich auf die eigentliche Arbeit konzentrieren. Das für viele Fahrer vertraute Gefühl der mechanischen Hebelbedienung wird entsprechend der vorliegenden Erfindung mit den Vorteilen der elektrischen Ansteuerung verbunden.According to the invention, the driver can control the rotational movement of the mixer drum of the truck mixer in accordance with the familiar feel for a mechanical lever operation, wherein the speed of the engine is automatically adjusted in response to the requested drum by means of the operating lever drum speed. Thus, the internal combustion engine can be operated by this automatic setting in the optimum speed range, so that it minimizes engine noise and minimizes consumption. The driver, however, the decision is taken in this solution to have to adjust the correct speed of the engine. Thus, he can concentrate on the actual work. The familiar to many drivers sense of mechanical lever operation is connected according to the present invention with the benefits of electrical control.

Bevorzugte Ausgestaltungen der Erfindung ergeben sich aus den sich an den Hauptanspruch anschließenden Unteransprüchen.Preferred embodiments of the invention will become apparent from the subsequent claims to the main claim.

Demnach können die Signale vom Bedienhebel berührungslos an die Steuerung übergebbar sein. Eine berührungslose Steuerung des Bedienhebels kann beispielsweise über Hall-Sensoren umgesetzt werden. Diese Hall-Sensoren nehmen die Stellung des Bedienhebels auf und geben diese an die Steuerung weiter. Aufgrund dieser berührungslosen Signalübergabe ist eine hohe Funktionssicherheit gewährleistet, da der Bedienhebel hierdurch schmutzunempfindlich und vor Feuchtigkeit geschützt wird.Accordingly, the signals from the operating lever can be transferred without contact to the controller. A non-contact control of the operating lever can be implemented for example via Hall sensors. These Hall sensors pick up the position of the control lever and pass it on to the controller. Due to this non-contact signal transfer, a high level of functional reliability is ensured, since the operating lever is thereby protected against dirt and moisture.

Vorteilhaft wird die benötigte Drehzahl des Antriebsmotors unter Berücksichtigung des Motorkennfeldes bestimmt.Advantageously, the required speed of the drive motor is determined taking into account the engine map.

Neben dem Bedienhebel kann zusätzlich ein Tastenbedienelement vorgesehen sein. Über dieses Tastenbedienelement können gegebenenfalls dieselben Steuerungsfunktionen realisiert werden, wie dies mit dem Bedienhebel der Fall ist.In addition to the operating lever may additionally be provided a key control element. If necessary, the same control functions can be implemented via this key control element as is the case with the operating lever.

Über das Tastenbedienelement können zusätzlich Beschleunigungs- und Verzögerungsrampen individuell und lastabhängig anpaßbar sein.In addition, acceleration and deceleration ramps can be adapted individually and load-dependent via the key control element.

Vorzugsweise ist der Bedienhebel aus einer Mittelstellung um 45° zu zwei Seiten hin verschwenkbar, wobei die Trommeldrehzahl proportional zur Auslenkung verändert wird.Preferably, the operating lever is pivoted from a central position by 45 ° to two sides, the drum speed is changed proportionally to the deflection.

Gemäß einer anderen vorteilhaften Ausgestaltung der Erfindung kann der Bedienhebel zusätzlich einen Bedienknopf aufweisen, wobei durch die Knopfbetätigung ein Schaltsignal zum Schnellstop der Mischertrommel aktivierbar ist.According to another advantageous embodiment of the invention, the operating lever may additionally comprise a control knob, wherein a switching signal for quick stop of the mixer drum can be activated by the button operation.

Des weiteren kann das Tastenbedienelement vorteilhaft in einer Zweikomponentenkunststoffbauweise gefertigt sein, wobei die Tasten und der Korpus aus einem Hartkunststoff und die Verbindung von Tasten und Korpus aus einem Weichkunststoff bestehen. Hierdurch ist eine schmutzunempfindliche, strahlwassergeschützte und reinigungsmittelbeständige Steuerung realisiert.Furthermore, the key-operated element can advantageously be manufactured in a two-component plastic construction, wherein the keys and the body made of a hard plastic and the combination of keys and body made of a soft plastic. As a result, a dirt-resistant, jet-water-proof and detergent-resistant control is realized.

Weitere Merkmale, Einzelheiten und Vorteile der Erfindung werden anhand eines in der Zeichnung dargestellten Ausführungsbeispiels näher erläutert. Es zeigen:

Figur 1:
eine schematische Darstellung eines Mischerfahrzeugs mit der erfindungsgemäßen Steuerung,
Figur 2:
ein Bedienteil der Steuerung gemäß Figur 1,
Figur 3:
das Hauptbedienteil der Steuerung und
Figur 4:
ein Diagramm, in welchem der Kraftverlauf für die Bedienhebelbetätigung über der Hebelauslenkung aufgetragen ist.
Further features, details and advantages of the invention will be explained in more detail with reference to an embodiment shown in the drawing. Show it:
FIG. 1:
a schematic representation of a mixer vehicle with the controller according to the invention,
FIG. 2:
a control panel according to the control FIG. 1 .
FIG. 3:
the main control unit of the control and
FIG. 4:
a diagram in which the force curve for the operating lever operation is plotted on the lever deflection.

In Figur 1 ist ein bauüblicher Fahrmischer 10 dargestellt, der neben dem hier nicht näher dargestellten Verbrennungsmotor als Antriebsmotor eine hydraulisch angetriebene Mischertrommel 12 aufweist. Die Mischertrommel wird in bekannter Art und Weise über einen hydraulischen Mischerantrieb angetrieben. Die Hydraulikpumpe dieses hydraulischen Mischerantriebs ist am Nebenabtrieb des den Fahrmischer antreibenden Verbrennungsmotors angeflanscht.In FIG. 1 a conventional construction truck mixer 10 is shown, which has a hydraulically driven mixer drum 12 in addition to the internal combustion engine, not shown here as a drive motor. The mixer drum is driven in a known manner via a hydraulic mixer drive. The hydraulic pump of this hydraulic mixer drive is flanged to the power take-off of the driving mixer driving internal combustion engine.

Der Fahrmischer 10 weist eine Steuerung für den Mischerantrieb auf. Die Steuerung weist zwei Bediensysteme 14 und 17 auf. Das Bediensystem 14 ist dreiteilig aufgebaut und umfasst einen Bedienhebel 16, ein Bedienteil 18 mit einem Tastenfeld 20 und einem Bildschirm 22 und eine Konsole 24 mit einem Notausschalter 26 (vgl. Figur 3). Dieses Bedienteil 14 ist im Heckbereich des Fahrmischers 10 seitlich angeordnet, wie dies in Figur 1 dargestellt ist.The truck mixer 10 has a controller for the mixer drive. The controller has two operating systems 14 and 17. The operating system 14 is constructed in three parts and comprises an operating lever 16, a control unit 18 with a keypad 20 and a screen 22 and a console 24 with an emergency stop switch 26 (see. FIG. 3 ). This operating part 14 is arranged laterally in the rear area of the truck mixer 10, as shown in FIG FIG. 1 is shown.

Dagegen ist in der Fahrerkabine ein weiteres Bedienteil 17 vorgesehen, das aus einer Unterschale 28 und einem Bedienteil 30 besteht. Dieses Bedienteil ist ähnlich aufgebaut zu dem zuvor genannten Bedienteil 18, da es auch ein Tastenfeld 32 und ein Display 34 aufweist. Sämtliche Bedienelemente, nämlich das Bedienteil 17 und die Bedienelemente 16, 18 und 26 des Bedienteils 14 sind über einen BUS, bspw. CAN-BUS mit der Hydrauliksteuerung, der Fahrmotorsteuerung oder einer Separatmotorsteuerung (falls ein separater Motor noch vorhanden sein sollte), einer eventuell vorhandenen Funkfernsteuerung und einem gegebenenfalls vorhandenen Telematiksystem, wie bspw. einem GPRS-Statusmelder verbunden.In contrast, a further control unit 17 is provided in the driver's cab, which consists of a lower shell 28 and a control panel 30. This keypad has a similar structure to the aforementioned keypad 18, since it also has a keypad 32 and a display 34. All operating elements, namely the operating part 17 and the operating elements 16, 18 and 26 of the operating part 14 are via a BUS, For example, CAN-BUS with the hydraulic control, the traction motor control or a separate motor control (if a separate engine should still be present), a possibly existing radio remote control and an optionally existing telematics system, such as. A GPRS status detector connected.

Mit dem Bediensystem insgesamt sollen alle vorgesehenen Funktionen des Fahrmischeraufbaus bedient und visualisiert werden. Die Bedienung kann nunmehr an mehreren Stellen am Fahrmischer erfolgen, das heißt über das Bedienelement 14 außen am Fahrermischer (gegebenenfalls kabelgebunden) und zusätzlich im Fahrerhaus über das Bedienelement 17. Der BUS ermöglicht dabei die Kommunikation zwischen den Komponenten des Bediensystems und der Hydrauliksteuerung.With the operating system as a whole, all intended functions of the truck mixer assembly are to be operated and visualized. The operation can now take place at several points on the truck mixer, that is on the control element 14 outside the driver mixer (possibly wired) and additionally in the cab via the control element 17. The BUS allows communication between the components of the control system and the hydraulic control.

Die Tastenfelder 20 bzw. 32 in den Bedienteilen 18 bzw. 30 weisen zwölf Tasten auf, in denen alle Funktionen des Trommelaufbaus kontrolliert werden können. Im einfachen Fall werden nur drei Tasten verwendet.The keypads 20 and 32 in the control units 18 and 30 have twelve keys in which all functions of the drum structure can be controlled. In the simple case only three buttons are used.

Ein jeweils vorgesehener LED-Icon 23 auf dem Bildschirm 22 bzw. 36 auf dem Display 34 zeigt die Trommeldrehzahl. Weitere LED-Balken visualisieren als Lauflicht die Drehbewegung der Trommel.An respectively provided LED icon 23 on the screen 22 or 36 on the display 34 shows the drum speed. Other LED bars visualize the rotational movement of the drum as running light.

Die Drehzahl des Antriebsmotors des Fahrmischers, das heißt im vorliegenden Fall eines Verbrennungsmotors, wird in Abhängigkeit von der angeforderten Trommeldrehzahl aufgrund einer Automatiksteuerung eingestellt. Die Trommeldrehzahl der Mischertrommel 12 wird über den Bedienhebel 16 eingestellt. Dabei ist der Bedienhebel aus einer Mittelstellung um beispielsweise 45° zu zwei Seiten hin verschwenkbar, wobei die Trommeldrehzahl proportional zur Auslenkung verändert wird. Je nach Richtung der Auslenkung dreht die Trommel in eine oder die entgegengesetzte Richtung.The rotational speed of the drive motor of the truck mixer, that is, in the present case, an internal combustion engine, is set in response to the requested drum speed due to an automatic control. The drum speed of the mixer drum 12 is adjusted via the operating lever 16. In this case, the operating lever from a central position by, for example, 45 ° to two sides pivoted, the drum speed is changed proportionally to the deflection. Depending on the direction of the deflection, the drum rotates in one or the opposite direction.

Anhand der Figur 4 kann der Kraftverlauf für die Hebelauslenkung des Bedienhebels 16 aus der Nullstellung heraus abgelesen werden. Je nach Winkelstellung nimmt die Kraft, die zum Auslenken des Hebels notwendig ist, zu. Es sind über Federkugeln oder ähnliches vier taktile Rückmeldungspunkte definiert, die in der Figur 4 dargestellt sind. An diesen Stellen merkt der bedienende Fahrer einen kleinen Widerstand, der ihm ein Indiz für die erreichte Position des Bedienhebels 16 gibt.Based on FIG. 4 can be read from the zero position of the force curve for the lever deflection of the operating lever 16 out. Depending on the angular position, the force required to deflect the lever increases. It's about feather balls or similar four tactile feedback items defined in the FIG. 4 are shown. At these points, the serving driver notices a small resistance, which gives him an indication of the reached position of the operating lever 16.

Der Bedienhebel 16 weist zusätzlich einen Bedienknopf 38 auf. Durch Betätigung des Knopfs 38 wird ein berührungsloser Schaltimpuls geschaltet, der zum Schnellstopp oder Memorytaster der Mischertrommel 12 führt. Dieses Schaltsignal des Bedienknopfs 38 bzw. der jeweilige Auslenkungsgrad des Bedienhebels 16 wird in digitalisierter Form über den BUS an die Motorsteuerung weitergegeben. Die Motorsteuerung sorgt nun dafür, dass der Verbrennungsmotor in einer Drehzahl betrieben wird, die notwendig ist, um über die Hydraulikpumpe des Hydraulikantriebs die Mischertrommel 12 in der vorgewählten Drehzahl antreiben zu können. Das bedeutet, dass die Trommeldrehzahlverstellung intuitiv erfolgt, das heißt dass der Fahrer wie bei der verbreiteten Handbedienung die Trommeldrehzahl "blind" durch die Hebelhaptik steuern und mit dieser Steuerung sogar regeln kann. Zusätzlich muß sich der Fahrer gerade nicht um die Drehzahl des Verbrennungsmotors kümmern. Die Ansteuerung des Mischerantriebs kann nicht nur durch den Bedienhebel 16 sondern auch durch die Taste 20 und 32 erfolgen.The operating lever 16 additionally has a control knob 38. By pressing the button 38, a non-contact switching pulse is switched, which leads to a quick stop or memory button of the mixer drum 12. This switching signal of the control knob 38 or the respective degree of deflection of the operating lever 16 is transmitted in digitized form via the bus to the engine control. The engine control now ensures that the internal combustion engine is operated at a speed which is necessary in order to be able to drive the mixer drum 12 at the preselected rotational speed via the hydraulic pump of the hydraulic drive. This means that the drum speed adjustment is intuitive, which means that the driver as in the widespread manual control the drum speed "blind" control by the lever feel and can even control with this control. In addition, the driver just does not have to worry about the speed of the engine. The control of the mixer drive can be done not only by the operating lever 16 but also by the key 20 and 32.

Die Bedienteile 14 und 17 sind in der vorliegenden Ausführung strahlwassergeschützt und reinigungsmittelbeständig sowie schmutzunempfindlich. Dies wird beim Bedienhebel 16 dadurch erreicht, dass dieser seine Signale berührungslos an die Steuerung übergibt. Dies wird beim Bedienhebel 16 durch hier nicht näher dargestellte Hall-Sensoren ermöglicht, die die jeweilige Position des Bedienhebels abfragen und als Signal über den BUS an die Steuerung geben. Die Tastenelemente 20 und 32 wiederum sind zusammen mit dem jeweiligen Gehäuse in einer Zweikomponentenkunststoffbauweise gefertigt, wobei die Tasten und der Korpus aus einem Hartkunststoff und die Verbindung von Tasten und Korpus aus einem Weichkunststoff entstehen. Aufgrund dieser Einstückigkeit ist die gesamte Vorrichtung schmutzunempflindlich. Die Sperrung der Bedienteile ist möglich um ein unbefugte sowie versehentliche Bedienung zu verhindern. Im Display kann zusätzlich eine Wartungsanzeige erfolgen.The control units 14 and 17 are in the present embodiment jet-proof and detergent-resistant and insensitive to dirt. This is achieved in the operating lever 16 in that it passes its signals without contact to the controller. This is possible with the operating lever 16 by Hall sensors, not shown here, which query the respective position of the operating lever and give as a signal via the bus to the controller. The key elements 20 and 32 are in turn made together with the respective housing in a two-component plastic construction, wherein the keys and the body made of a hard plastic and the combination of keys and body made of a soft plastic. Because of this one-piece design, the entire device is dirt-insensitive. The locking of the control panels is possible to prevent unauthorized and accidental operation. In addition, a maintenance indicator can be shown on the display.

Claims (10)

Steuerung für Fahrmischer mit einer hydraulisch angetriebenen Mischertrommel, wobei die Hydraulikpumpe des Mischerantriebs von dem Antriebsmotor des Fahrmischers oder einem separaten Motor angetrieben wird,
dadurch gekennzeichnet,
dass die Drehzahl des Antriebsmotors in Abhängigkeit von der angeforderten Trommeldrehzahl einstellbar ist, wobei die gewünschte Trommeldrehzahl über einen Bedienhebel bedarfsabhängig einstellbar ist.Truck mixer control with a hydraulically driven mixer drum, wherein the hydraulic pump of the mixer drive is driven by the drive mixer of the truck mixer or a separate motor,
characterized,
in that the rotational speed of the drive motor can be set as a function of the requested drum speed, wherein the desired drum speed can be adjusted as required by way of an operating lever. Steuerung nach Anspruch 1, dadurch gekennzeichnet, dass alle Signale vom Bedienhebel berührungslos an die Steuerung übergebbar sind.Control according to claim 1, characterized in that all signals from the operating lever can be transferred without contact to the controller. Steuerung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die benötigte Drehzahl des Antriebsmotors unter Berücksichtigung des Motorkennfeldes bestimmbar ist.Control according to claim 1 or 2, characterized in that the required speed of the drive motor can be determined taking into account the engine map. Steuerung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass als Antriebsmotor ein Dieselmotor eingesetzt ist.Control according to one of claims 1 to 3, characterized in that a diesel engine is used as the drive motor. Steuerung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass neben dem Bedienhebel ein Tastenbedienelement vorgesehen ist.Control according to one of claims 1 to 4, characterized in that in addition to the operating lever, a key control element is provided. Steuerung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass über das Tastenbedienelement Beschleunigungs- und Verzögerungsrampen individuell und lastabhängig anpaßbar sind.Control according to one of Claims 1 to 5, characterized in that acceleration and deceleration ramps can be adapted individually and load-dependent via the key operating element. Steuerung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass der Bedienhebel aus einer Mittelstellung um 45 ° zu zwei Seiten hin verschwenkbar ist, wobei die Trommeldrehzahl proportional zur Auslenkung verändert wird.Control according to one of claims 1 to 6, characterized in that the operating lever from a central position by 45 ° to two sides can be pivoted, wherein the drum speed is changed proportionally to the deflection. Steuerung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass der Bedienhebel zusätzlich einen Bedienknopf aufweist, wobei durch die Knopfbetätigung ein Schaltsignale zum Schnellstop der Mischertrommel aktivierbar ist.Control according to one of claims 1 to 7, characterized in that the operating lever additionally comprises a control knob, wherein a switching signals for quick stop of the mixer drum can be activated by the button operation. Steuerung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass die Stellung des Bedienhebels über mindestens einen Hall-Sensor aufnehmbar und an die Steuerung weitergebbar ist.Control according to one of claims 1 to 8, characterized in that the position of the operating lever via at least one Hall sensor can be received and forwarded to the controller. Steuerung nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass das Tastenbedienelement in einer Zweikomponentenkunststoffbauweise gefertigt ist, wobei die Tasten und der Korpus aus einem Hartkunststoff und die Verbindung von Tasten und Korpus aus einem Weichkunststoff bestehen.Controller according to one of claims 1 to 9, characterized in that the key-operated element is made in a two-component plastic construction, wherein the keys and the body of a hard plastic and the combination of keys and body made of a soft plastic.
EP08006847.1A 2007-04-19 2008-04-03 Control for mixer truck Active EP1982812B2 (en)

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EP1982812A2 true EP1982812A2 (en) 2008-10-22
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CA (1) CA2628511C (en)
DE (2) DE202007005706U1 (en)
DK (1) DK1982812T4 (en)
HK (1) HK1117096A1 (en)
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US10369722B2 (en) 2019-08-06
AU2008201716B2 (en) 2012-11-08
CN101288983B (en) 2015-07-22
RU2008115409A (en) 2009-10-27
DE102008017350B4 (en) 2010-04-29
CN101288983A (en) 2008-10-22
EP1982812B1 (en) 2013-12-04
DE202007005706U1 (en) 2008-08-28
US20080279036A1 (en) 2008-11-13
PL1982812T5 (en) 2019-06-28
DK1982812T3 (en) 2014-01-27
PL1982812T3 (en) 2014-05-30
EP1982812B2 (en) 2018-12-19
CA2628511C (en) 2016-01-05
DE102008017350A1 (en) 2008-11-06
AU2008201716A1 (en) 2008-11-06
DK1982812T4 (en) 2019-03-18
HK1117096A1 (en) 2009-01-09
EP1982812A3 (en) 2012-02-22
RU2467872C2 (en) 2012-11-27
CA2628511A1 (en) 2008-10-19

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