WO2022002485A1 - Power take-off arrangement - Google Patents

Power take-off arrangement Download PDF

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Publication number
WO2022002485A1
WO2022002485A1 PCT/EP2021/063959 EP2021063959W WO2022002485A1 WO 2022002485 A1 WO2022002485 A1 WO 2022002485A1 EP 2021063959 W EP2021063959 W EP 2021063959W WO 2022002485 A1 WO2022002485 A1 WO 2022002485A1
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WO
WIPO (PCT)
Prior art keywords
clutch
motor
shaft
drive
power take
Prior art date
Application number
PCT/EP2021/063959
Other languages
German (de)
French (fr)
Inventor
Elisabeth Endl
Original Assignee
Zf Friedrichshafen Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zf Friedrichshafen Ag filed Critical Zf Friedrichshafen Ag
Publication of WO2022002485A1 publication Critical patent/WO2022002485A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/02—Arrangement or mounting of electrical propulsion units comprising more than one electric motor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/02—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of clutch
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
    • B60K17/06—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing
    • B60K17/08—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing of mechanical type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/28—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or type of power take-off

Definitions

  • the invention relates to an arrangement according to the preamble of claim 1 and a method according to the independent method claim.
  • Power take-offs also called power take-offs
  • a power take-off branches off from a main drive and is used to drive machines and equipment.
  • the power take-off and the main drive are driven by a common engine.
  • Such a drive configuration is inflexible because the power take-off requires constant speeds on the one hand.
  • the main drive on the other hand has to be operated at a variable speed in order to achieve different travel speeds.
  • the invention is based on the object of making available an improved drive arrangement with a power take-off. This object is achieved by an arrangement according to claim 1 and a method according to the independent method claim. Preferred developments are contained in the subclaims and are given in the following description and the exemplary embodiment shown in FIG.
  • the arrangement includes a first engine, a first clutch, a drive shaft and a power take-off.
  • a clutch is a switching element that is designed to connect two shafts to one another in a rotationally fixed manner.
  • the clutch has a closed and an open state. In the open state, the shafts can be rotated relative to one another. If the coupling is in the closed state, it connects the shafts with one another in a rotationally fixed manner.
  • the clutch can be operated selectively. This means that the clutch can be converted from the open state into the closed state and from the closed state into the open state at any time by actuation.
  • the first motor can be connected to the drive shaft in a rotationally effective manner by means of the first clutch. This means that the first clutch is arranged in a torque flow from an output shaft of the motor to the drive shaft.
  • the coupling is designed to connect a shaft which is rotationally effective or can be connected to the output shaft of the motor, in a rotationally fixed manner to a shaft which is rotationally connected or can be connected to the drive shaft.
  • the hitch can be designed to connect the output shaft of the motor in a rotationally fixed manner to an input shaft of a transmission, the output shaft of which represents the drive shaft.
  • a rotationally effective connection denotes a connection with any degree of gear freedom, preferably with a gear freedom degree of 1.
  • degree of freedom of transmission also known as “degree of transmission”
  • the degree of freedom of a gear stage corresponds to the number of relative movements that must be specified so that the movements of all links in the gear stage are fully defined. This corresponds to the number of relative movements that must be prevented in order to make all links of the gear stage unable to move.
  • a rotationally effective connection with a gear degree of freedom of 1 corresponds to a clear speed relationship between the links. So if two shafts are connected with a gear degree of freedom of 1, the speed of the other shaft is uniquely determined depending on a freely selectable speed of one of the two shafts. In particular, there can be a linear relationship between the speeds of the two shafts.
  • a non-rotatable connection is a special form of a torsionally effective connection with a degree of gear freedom of 1.
  • a drive shaft denotes a shaft via which a vehicle can be driven.
  • the arrangement comprises a second motor, a second clutch and a third clutch.
  • the second clutch By means of the second clutch, the second motor or the sen output shaft can be connected to the power take-off shaft in a rotationally effective manner.
  • the third clutch By means of the third clutch, the first motor or its output shaft and the second motor or its output shaft can be connected to one another in a rotationally effective manner.
  • a power take-off shaft is a shaft that is not part of a travel drive.
  • Working machines can be driven via the auxiliary drive shaft.
  • a work machine driven by the power take-off shaft can be part of the above-mentioned vehicle. Alternatively, it is a separate machine that is not connected to the vehicle.
  • the invention makes it possible to couple the first motor and the second motor for driving the drive shaft and the power take-off shaft as required.
  • the arrangement enables the drive power of the first motor and the second motor to be coupled.
  • the drive power of the first motor and the drive power of the second motor can thus be interconnected either to drive the vehicle or to drive a work machine. This reduces the required maximum power of each individual motor. It is therefore possible to use smaller and, as a result, lighter and more cost-effective motors.
  • the arrangement enables operation in accordance with the method according to the invention described below.
  • a Heidelbergge transmission is a transmission with a variable translation between an input shaft and an output shaft of the transmission.
  • the first motor or its output shaft can be rotatably connected to the gearbox or its input shaft.
  • a shaft that is rotationally connected or connectable to the first motor or its output shaft can be connected non-rotatably to a shaft that is rotationally connected or connectable to the transmission or its input shaft.
  • the gearbox or its output shaft is in turn connected or can be connected to the drive shaft in a rotationally effective manner.
  • first motor and / or the second motor are designed as electric motors.
  • both the first motor and the second motor can be designed as electric motors. It is also possible to use an internal combustion engine as the first motor and an electric motor as the second motor.
  • a method according to the invention is used to operate the arrangement according to the invention or a preferred development.
  • the method provides for the implementation of at least three drive states.
  • a first drive state is implemented by closing the first clutch, opening the second clutch and closing the third clutch.
  • the first motor and the second motor are jointly connected to the drive shaft in a rotationally effective manner.
  • the power take-off shaft is decoupled due to the open second clutch. Since both the first motor and the second motor are coupled to the drive shaft, a particularly high drive power can be provided.
  • a second drive state provides that the third clutch is open.
  • the first motor and the second motor are decoupled from one another.
  • the first motor is then available exclusively to drive the drive shaft and the second motor to drive the power take-off shaft.
  • the first clutch and / or the second clutch can be closed in the second Antriebszu.
  • the first clutch In a third drive state, the first clutch is opened.
  • the second clutch and the third clutch are closed in the third drive state. Due to the closed first clutch, the first motor and the second motor are decoupled from the drive shaft.
  • the first motor is instead coupled to the second motor via the closed third clutch. Via the closed second clutch there is an effective drive connection between the two engines and the auxiliary output shaft. This allows working machines with a particularly high power requirement to be driven via the power take-off shaft.
  • FIG. 1 A preferred embodiment of the invention is shown in FIG. 1 in detail shows:
  • the arrangement shown in Fig. 1 comprises a first electric motor EM1, a second electric motor EM2, a first clutch K1, a second clutch K2, a third clutch K3, a transmission G, a drive shaft AN and a power take-off shaft PTO.
  • the clutch K1 is designed to produce a non-rotatable connec tion between an output shaft W1 of the electric motor EM1 and an input shaft W2 of the transmission G in the closed state.
  • the drive shaft AN is identical to an output shaft of the gearbox G.
  • a first gear Z1 is non-rotatably connected to the output shaft W1 of the first electric motor EM1.
  • the first gear Z1 meshes with a second gear Z2. This in turn can be connected non-rotatably to an output shaft W3 of the second electric motor EM2 via the third clutch K3. If the third clutch K3 is closed, there is a non-rotatable connection between the second gear Z2 and the output shaft W3 of the second electric motor EM2.
  • the second clutch K2 connects the output shaft W3 of the second electric motor EM2 in a rotationally fixed manner to the auxiliary drive shaft PTO.
  • the transmission G is designed as a powershift transmission. This means that a translation between the input shaft W2 and the drive shaft AN can be changed while a torque is applied to both shafts.
  • the transmission G provides four forward gears, that is, four gear ratios with positive Sign between the input shaft W2 and the drive shaft AN, ready. Reverse travel can be achieved by reversing the direction of rotation of the electric motors EM1, EM2.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Gear Transmission (AREA)
  • Transmission Devices (AREA)

Abstract

The invention relates to an arrangement with a first motor (EM1), a first clutch (K1), an input shaft (AN) and a power take-off (PTO); wherein the first motor (EM1) can be connected for rotation to the input shaft (AN) by means of the first clutch (K1). The arrangement furthermore comprises a second motor (EM2), a second clutch (K2) and a third clutch (K3); wherein the second motor (EM2) can be connected to a power take-off shaft (PTO) for rotation by means of the second clutch (K2); and wherein the first motor (EM1) and the second motor (EM2) can be connected for rotation by means of the third clutch (K3).

Description

Nebenantriebsanordnunq Power take-off arrangement
Die Erfindung betrifft eine Anordnung nach dem Oberbegriff von Anspruch 1 und ein Verfahren nach dem unabhängigen Verfahrensanspruch. The invention relates to an arrangement according to the preamble of claim 1 and a method according to the independent method claim.
Aus dem Stand der Technik sind Nebenantriebe, auch Zapfwellen genannt, bekannt. Ein Nebenantrieb zweigt von einem Hauptantrieb ab und dient dazu, Maschinen und Gerätschaften anzutreiben. Der Nebenantrieb und der Hauptantrieb werden dabei von einem gemeinsamen Motor angetrieben. Eine derartige Antriebskonfiguration ist unflexibel, da der Nebenantrieb auf der einen Seite konstante Drehzahlen benötigt. Der Hauptantrieb auf der anderen Seite muss mit veränderlicher Drehzahl betrieben werden, um unterschiedliche Fahrgeschwindigkeiten zu realisieren. Power take-offs, also called power take-offs, are known from the prior art. A power take-off branches off from a main drive and is used to drive machines and equipment. The power take-off and the main drive are driven by a common engine. Such a drive configuration is inflexible because the power take-off requires constant speeds on the one hand. The main drive on the other hand has to be operated at a variable speed in order to achieve different travel speeds.
Der Erfindung liegt die Aufgabe zugrunde, eine verbesserte Antriebsanordnung mit einem Nebenantrieb verfügbar zu machen. Diese Aufgabe wird gelöst durch eine An ordnung nach Anspruch 1 und ein Verfahren nach dem unabhängigen Verfahrensan spruch. Bevorzugte Weiterbildungen sind in den Unteransprüchen enthalten und er geben sich aus nachfolgender Beschreibung sowie dem in Fig. 1 dargestellten Aus führungsbeispiel. The invention is based on the object of making available an improved drive arrangement with a power take-off. This object is achieved by an arrangement according to claim 1 and a method according to the independent method claim. Preferred developments are contained in the subclaims and are given in the following description and the exemplary embodiment shown in FIG.
Die Anordnung umfasst einen ersten Motor, eine erste Kupplung, eine Antriebswelle und einen Nebenantrieb. The arrangement includes a first engine, a first clutch, a drive shaft and a power take-off.
Eine Kupplung ist ein Schaltelement, das ausgebildet ist, zwei Wellen drehfest mitei nander zu verbinden. Die Kupplung besitzt einen geschlossenen und einen offenen Zustand. Im offenen Zustand sind die Wellen relativ zueinander verdrehbar. Befindet sich die Kupplung im geschlossenen Zustand, verbindet sie die Wellen drehfest mit einander. A clutch is a switching element that is designed to connect two shafts to one another in a rotationally fixed manner. The clutch has a closed and an open state. In the open state, the shafts can be rotated relative to one another. If the coupling is in the closed state, it connects the shafts with one another in a rotationally fixed manner.
Die Kupplung ist selektiv betätigbar. Dies bedeutet, dass die Kupplung zu einem be liebigen Zeitpunkt durch Betätigung von dem offenen Zustand in den geschlossenen Zustand und von dem geschlossenen Zustand in den offenen Zustand überführbar ist. Mittels der ersten Kupplung ist der erste Motor drehwirksam mit der Antriebswelle verbindbar. Dies bedeutet, dass die erste Kupplung in einem Drehmomentfluss von einer Ausgangswelle des Motors zu der Antriebswelle angeordnet ist. Die Kupplung ist ausgebildet, eine Welle, die drehwirksam mit der Ausgangswelle des Motors ver bunden oder verbindbar ist, drehfest mit einer Welle zu verbinden, die drehwirksam mit der Antriebswelle verbunden oder verbindbar ist. Insbesondere kann die Kupp lung ausgebildet sein, die Ausgangswelle des Motors drehfest mit einer Eingangs welle eines Getriebes zu verbinden, dessen Ausgangswelle die Antriebswelle dar stellt. The clutch can be operated selectively. This means that the clutch can be converted from the open state into the closed state and from the closed state into the open state at any time by actuation. The first motor can be connected to the drive shaft in a rotationally effective manner by means of the first clutch. This means that the first clutch is arranged in a torque flow from an output shaft of the motor to the drive shaft. The coupling is designed to connect a shaft which is rotationally effective or can be connected to the output shaft of the motor, in a rotationally fixed manner to a shaft which is rotationally connected or can be connected to the drive shaft. In particular, the hitch can be designed to connect the output shaft of the motor in a rotationally fixed manner to an input shaft of a transmission, the output shaft of which represents the drive shaft.
Eine drehwirksame Verbindung bezeichnet eine Verbindung mit einem beliebigen Getriebefreiheitsgrad, vorzugsweise mit einem Getriebefreiheitsgrad von 1 . Eine all gemeine Definition des Begriffs Getriebefreiheitsgrad, auch Getriebelaufgrad ge nannt, befindet sich im „Dubbel“ (Karl-Heinrich Grote, Jörg Feldhusen: „Dubbel“. 22. Auflage, 2007). Der Getriebefreiheitsgrad einer Getriebestufe stimmt mit der Anzahl relativer Bewegungen überein, die vorgegeben werden müssen, damit die Bewegun gen aller Glieder der Getriebestufe vollständig festgelegt sind. Dies entspricht der An zahl relativer Bewegungen, die zu verhindern sind, um alle Glieder der Getriebestufe bewegungsunfähig zu machen. A rotationally effective connection denotes a connection with any degree of gear freedom, preferably with a gear freedom degree of 1. A general definition of the term “degree of freedom of transmission”, also known as “degree of transmission”, can be found in “Dubbel” (Karl-Heinrich Grote, Jörg Feldhusen: “Dubbel”. 22nd edition, 2007). The degree of freedom of a gear stage corresponds to the number of relative movements that must be specified so that the movements of all links in the gear stage are fully defined. This corresponds to the number of relative movements that must be prevented in order to make all links of the gear stage unable to move.
Eine drehwirksame Verbindung mit einem Getriebefreiheitsgrad von 1 entspricht ei nem eindeutigen Drehzahlzusammenhang zwischen den Gliedern. Sind also zwei Wellen mit einem Getriebefreiheitsgrad von 1 verbunden, so ist in Abhängigkeit von einer frei wählbaren Drehzahl einer der zwei Wellen die Drehzahl der anderen Welle eindeutig bestimmt. Insbesondere kann zwischen den Drehzahlen der beiden Wellen ein linearer Zusammenhang bestehen. Bei einer drehfesten Verbindung handelt es sich um eine spezielle Form einer drehwirksamen Verbindung mit einem Getriebefrei heitsgrad von 1 . A rotationally effective connection with a gear degree of freedom of 1 corresponds to a clear speed relationship between the links. So if two shafts are connected with a gear degree of freedom of 1, the speed of the other shaft is uniquely determined depending on a freely selectable speed of one of the two shafts. In particular, there can be a linear relationship between the speeds of the two shafts. A non-rotatable connection is a special form of a torsionally effective connection with a degree of gear freedom of 1.
Eine Antriebswelle bezeichnet eine Welle, über die ein Fahrzeug antreibbar ist. Ins besondere kann es sich um eine Kardanwelle des Fahrzeugs handeln. Erfindungsgemäß umfasst die Anordnung einen zweiten Motor, eine zweite Kupplung und eine dritte Kupplung. Mittels der zweiten Kupplung ist der zweite Motor bzw. des sen Ausgangswelle drehwirksam mit der Nebenabtriebswelle verbindbar. Mittels der dritten Kupplung sind der erste Motor bzw. dessen Ausgangswelle und der zweite Motor bzw. dessen Ausgangswelle drehwirksam miteinander verbindbar. A drive shaft denotes a shaft via which a vehicle can be driven. In particular, it can be a cardan shaft of the vehicle. According to the invention, the arrangement comprises a second motor, a second clutch and a third clutch. By means of the second clutch, the second motor or the sen output shaft can be connected to the power take-off shaft in a rotationally effective manner. By means of the third clutch, the first motor or its output shaft and the second motor or its output shaft can be connected to one another in a rotationally effective manner.
Mit Nebenabtriebswelle wird eine Welle bezeichnet, die nicht Teil eines Fahrantriebs ist. Über die Nebenantriebswelle lassen sich Arbeitsmaschinen antreiben. Insbeson dere kann eine durch die Nebenabtriebswelle angetriebene Arbeitsmaschine Teil des obengenannten Fahrzeugs sein. Alternativ handelt es sich um eine separate, nicht mit dem Fahrzeug verbundene Maschine. A power take-off shaft is a shaft that is not part of a travel drive. Working machines can be driven via the auxiliary drive shaft. In particular, a work machine driven by the power take-off shaft can be part of the above-mentioned vehicle. Alternatively, it is a separate machine that is not connected to the vehicle.
Die Erfindung ermöglicht es, den ersten Motor und den zweiten Motor zum Antrieb der Antriebswelle und der Nebenabtriebswelle bedarfsweise zu koppeln. Insbeson dere ermöglicht die Anordnung eine Kopplung der Antriebsleistung des ersten Motors und des zweiten Motors. Die Antriebsleistung des ersten Motors und die Antriebsleis tung des zweiten Motors lassen sich dadurch wahlweise zum Antrieb des Fahrzeugs oder zum Antrieb einer Arbeitsmaschine zusammenschalten. Dies verringert die er forderliche Maximalleistung jedes einzelnen Motors. Es können also kleinere und da mit leichtere und kostengünstigere Motoren verwendet werden. Insbesondere ermög licht die Anordnung einen Betrieb gemäß dem unten beschriebenen erfindungsgemä ßen Verfahren. The invention makes it possible to couple the first motor and the second motor for driving the drive shaft and the power take-off shaft as required. In particular, the arrangement enables the drive power of the first motor and the second motor to be coupled. The drive power of the first motor and the drive power of the second motor can thus be interconnected either to drive the vehicle or to drive a work machine. This reduces the required maximum power of each individual motor. It is therefore possible to use smaller and, as a result, lighter and more cost-effective motors. In particular, the arrangement enables operation in accordance with the method according to the invention described below.
Bevorzugt ist die Anordnung mit einem Schaltgetriebe weitergebildet. Ein Schaltge triebe ist ein Getriebe mit einer veränderlichen Übersetzung zwischen einer Ein gangswelle und einer Ausgangswelle des Getriebes. The arrangement is preferably developed with a manual transmission. A Schaltge transmission is a transmission with a variable translation between an input shaft and an output shaft of the transmission.
Mittels der ersten Kupplung ist der erste Motor bzw. dessen Ausgangswelle drehwirk sam mit dem Schaltgetriebe bzw. dessen Eingangswelle verbindbar. Durch Schlie ßen der ersten Kupplung ist also eine Welle, die drehwirksam mit dem ersten Motor bzw. dessen Ausgangswelle verbunden oder verbindbar ist, drehfest mit einer Welle verbindbar, die drehwirksam mit dem Getriebe bzw. dessen Eingangswelle verbun den oder verbindbar ist. Das Schaltgetriebe bzw. dessen Ausgangswelle wiederum ist drehwirksam mit der Antriebswelle verbunden oder verbindbar. By means of the first clutch, the first motor or its output shaft can be rotatably connected to the gearbox or its input shaft. By closing the first clutch, a shaft that is rotationally connected or connectable to the first motor or its output shaft can be connected non-rotatably to a shaft that is rotationally connected or connectable to the transmission or its input shaft. The gearbox or its output shaft is in turn connected or can be connected to the drive shaft in a rotationally effective manner.
In einer darüber hinaus bevorzugten Weiterbildung sind der erste Motor und/oder der zweite Motor als Elektromotoren ausgeführt. Insbesondere können sowohl der erste Motor als auch der zweite Motor als Elektromotoren ausgeführt sein. Auch ist es möglich, einen Verbrennungsmotor als ersten Motor und einen Elektromotor als zwei ten Motor zu verwenden. In a further preferred development, the first motor and / or the second motor are designed as electric motors. In particular, both the first motor and the second motor can be designed as electric motors. It is also possible to use an internal combustion engine as the first motor and an electric motor as the second motor.
Ein erfindungsgemäßes Verfahren dient dem Betrieb der erfindungsgemäßen Anord nung oder einer bevorzugten Weiterbildung. Das Verfahren sieht die Realisierung von mindestens drei Antriebszuständen vor. A method according to the invention is used to operate the arrangement according to the invention or a preferred development. The method provides for the implementation of at least three drive states.
Ein erster Antriebszustand wird durch Schließen der ersten Kupplung, Öffnen der zweiten Kupplung und Schließen der dritten Kupplung realisiert. Dadurch sind der erste Motor und der zweite Motor gemeinsam drehwirksam mit der Antriebswelle ver bunden. Die Nebenantriebswelle hingegen ist aufgrund der geöffneten zweiten Kupp lung entkoppelt. Da sowohl der erste Motor als auch der zweite Motor mit der An triebswelle gekoppelt sind, lässt sich eine besonders hohe Antriebsleistung bereitstel len. A first drive state is implemented by closing the first clutch, opening the second clutch and closing the third clutch. As a result, the first motor and the second motor are jointly connected to the drive shaft in a rotationally effective manner. The power take-off shaft, however, is decoupled due to the open second clutch. Since both the first motor and the second motor are coupled to the drive shaft, a particularly high drive power can be provided.
Ein zweiter Antriebszustand sieht vor, dass die dritte Kupplung geöffnet ist. Dadurch sind der erste Motor und der zweite Motor voneinander entkoppelt. Der erste Motor steht dann exklusiv zum Antrieb der Antriebswelle und der zweite Motor zum Antrieb der Nebenantriebswelle zur Verfügung. Entsprechend können im zweiten Antriebszu stand die erste Kupplung und/oder die zweite Kupplung geschlossen sein. A second drive state provides that the third clutch is open. As a result, the first motor and the second motor are decoupled from one another. The first motor is then available exclusively to drive the drive shaft and the second motor to drive the power take-off shaft. Correspondingly, the first clutch and / or the second clutch can be closed in the second Antriebszu.
In einem dritten Antriebszustand ist die erste Kupplung geöffnet. Die zweite Kupp lung und die dritte Kupplung sind im dritten Antriebszustand geschlossen. Durch die geschlossene erste Kupplung sind der erste Motor und der zweite Motor von der An triebswelle entkoppelt. Der erste Motor ist stattdessen über die geschlossene dritte Kupplung mit dem zweiten Motor gekoppelt. Über die geschlossene zweite Kupplung besteht eine antriebswirksame Verbindung zwischen beiden Motoren und der Neben abtriebswelle. Dadurch lassen sich über die Nebenabtriebswelle Arbeitsmaschinen mit besonders hohem Leistungsbedarf antreiben. In a third drive state, the first clutch is opened. The second clutch and the third clutch are closed in the third drive state. Due to the closed first clutch, the first motor and the second motor are decoupled from the drive shaft. The first motor is instead coupled to the second motor via the closed third clutch. Via the closed second clutch there is an effective drive connection between the two engines and the auxiliary output shaft. This allows working machines with a particularly high power requirement to be driven via the power take-off shaft.
Ein bevorzugtes Ausführungsbeispiel der Erfindung ist in Fig. 1 dargestellt. Im Einzel nen zeigt: A preferred embodiment of the invention is shown in FIG. In detail shows:
Fig. 1 eine Nebenantriebsanordnung. 1 shows a power take-off arrangement.
Die in Fig. 1 dargestellte Anordnung umfasst einen ersten Elektromotor EM1 , einen zweiten Elektromotor EM2, eine erste Kupplung K1 , eine zweite Kupplung K2, eine dritte Kupplung K3, ein Getriebe G, eine Antriebswelle AN und eine Nebenantriebs welle PTO. The arrangement shown in Fig. 1 comprises a first electric motor EM1, a second electric motor EM2, a first clutch K1, a second clutch K2, a third clutch K3, a transmission G, a drive shaft AN and a power take-off shaft PTO.
Die Kupplung K1 ist ausgebildet, im geschlossenen Zustand eine drehfeste Verbin dung zwischen einer Ausgangswelle W1 des Elektromotors EM1 und einer Eingangs welle W2 des Getriebes G herzustellen. Die Antriebswelle AN ist identisch mit einer Ausgangswelle des Getriebes G. The clutch K1 is designed to produce a non-rotatable connec tion between an output shaft W1 of the electric motor EM1 and an input shaft W2 of the transmission G in the closed state. The drive shaft AN is identical to an output shaft of the gearbox G.
Ein erstes Zahnrad Z1 ist drehfest mit der Ausgangswelle W1 des ersten Elektromo tors EM1 verbunden. Das erste Zahnrad Z1 kämmt mit einem zweiten Zahnrad Z2. Dieses wiederum ist über die dritte Kupplung K3 drehfest mit einer Ausgangswelle W3 des zweiten Elektromotors EM2 verbindbar. Ist die dritte Kupplung K3 geschlos sen, besteht zwischen dem zweiten Zahnrad Z2 und der Ausgangswelle W3 des zweiten Elektromotors EM2 eine drehfeste Verbindung. A first gear Z1 is non-rotatably connected to the output shaft W1 of the first electric motor EM1. The first gear Z1 meshes with a second gear Z2. This in turn can be connected non-rotatably to an output shaft W3 of the second electric motor EM2 via the third clutch K3. If the third clutch K3 is closed, there is a non-rotatable connection between the second gear Z2 and the output shaft W3 of the second electric motor EM2.
Die zweite Kupplung K2 verbindet im geschlossenen Zustand die Ausgangswelle W3 des zweiten Elektromotors EM2 drehfest mit der Nebenantriebswelle PTO. In the closed state, the second clutch K2 connects the output shaft W3 of the second electric motor EM2 in a rotationally fixed manner to the auxiliary drive shaft PTO.
Das Getriebe G ist als Lastschaltgetriebe ausgebildet. Dies bedeutet, dass eine Übersetzung zwischen der Eingangswelle W2 und der Antriebswelle AN verändert werden kann, während beide Wellen mit einem Drehmoment beaufschlagt sind. Das Getriebe G stellt vier Vorwärtsgänge, das heißt vier Übersetzungen mit positivem Vorzeichen zwischen der Eingangswelle W2 und der Antriebswelle AN, bereit. Eine Rückwärtsfahrt ist durch Drehrichtungsumkehr der Elektromotoren EM1 , EM2 reali sierbar. The transmission G is designed as a powershift transmission. This means that a translation between the input shaft W2 and the drive shaft AN can be changed while a torque is applied to both shafts. The transmission G provides four forward gears, that is, four gear ratios with positive Sign between the input shaft W2 and the drive shaft AN, ready. Reverse travel can be achieved by reversing the direction of rotation of the electric motors EM1, EM2.
Bezuqszeichen Reference symbol
EM1 erster Elektromotor EM1 first electric motor
EM2 zweiter Elektromotor EM2 second electric motor
K1 erste Kupplung K1 first clutch
K2 zweite Kupplung K2 second clutch
K3 dritte Kupplung K3 third clutch
AN Antriebswelle ON drive shaft
PTO Nebenantriebswelle PTO power take-off shaft
G Schaltgetriebe G manual transmission
W2 Ausgangswelle des ersten ElektromotorsW2 output shaft of the first electric motor
W2 Eingangswelle des Getriebes W2 input shaft of the gearbox
W3 Ausgangswelle des zweiten Elektromotors W3 output shaft of the second electric motor

Claims

Patentansprüche Claims
1. Anordnung mit einem ersten Motor (EM1 ), einer ersten Kupplung (K1 ), einer An triebswelle (AN) und einem Nebenantrieb (PTO); wobei mittels der ersten Kupplung (K1 ) der erste Motor (EM1 ) drehwirksam mit der An triebswelle (AN) verbindbar ist; gekennzeichnet durch einen zweiten Motor (EM2), eine zweite Kupplung (K2) und eine dritte Kupplung (K3); wobei mittels der zweiten Kupplung (K2) der zweite Motor (EM2) drehwirksam mit einer Ne benantriebswelle (PTO) verbindbar ist; und wobei mittels der dritten Kupplung (K3) der erste Motor (EM1 ) und der zweite Motor (EM2) drehwirksam verbindbar sind. 1. Arrangement with a first motor (EM1), a first clutch (K1), a drive shaft (AN) and a power take-off (PTO); wherein by means of the first clutch (K1), the first motor (EM1) can be connected to the drive shaft (AN) in a rotationally effective manner; characterized by a second motor (EM2), a second clutch (K2) and a third clutch (K3); wherein by means of the second clutch (K2) of the second motor (EM2) rotatably with a Ne benantriebswelle (PTO) can be connected; and wherein the first motor (EM1) and the second motor (EM2) can be connected in a rotationally effective manner by means of the third clutch (K3).
2. Anordnung nach Anspruch 1 ; gekennzeichnet durch ein Schaltgetriebe (G); wobei mittels der ersten Kupplung (K1) der erste Motor (EM1 ) mit dem Schaltgetriebe () verbindbar ist; und wobei das Schaltgetriebe drehwirksam mit der Antriebswelle (AN) verbunden oder verbind bar ist. 2. Arrangement according to claim 1; characterized by a gearbox (G); wherein the first motor (EM1) can be connected to the gearbox (10) by means of the first clutch (K1); and wherein the gearbox is rotatably connected to the drive shaft (AN) or can be connected.
3. Anordnung nach einem der vorhergehenden Ansprüche; dadurch gekennzeichnet, dass der erste Motor (EM1 ) und/oder der zweite Elektromotor (EM2) als Elektromotoren ausgebildet sind. 3. Arrangement according to one of the preceding claims; characterized in that the first motor (EM1) and / or the second electric motor (EM2) are designed as electric motors.
4. Verfahren zum Betrieb einer Anordnung nach einem der vorhergehenden Ansprü che; dadurch gekennzeichnet, dass eine erster Antriebszustand durch Schließen der ersten Kupplung (K1 ), Öffnen der zweiten Kupplung (K2) und Schließen der dritten Kupplung (K3) realisiert wird; wobei ein zweiter Antriebszustand durch Öffnen der dritten Kupplung (K3) realisiert wird; wobei ein dritter Antriebszustand durch Öffnen der ersten Kupplung (K1 ), Schließen der zweiten Kupplung (K2) und Schließen der dritten Kupplung (K3) realisiert wird 4. A method for operating an arrangement according to one of the preceding claims; characterized in that a first drive state is realized by engaging the first clutch (K1), opening the second clutch (K2) and engaging the third clutch (K3); wherein a second drive state is realized by opening the third clutch (K3); a third drive state is realized by opening the first clutch (K1), closing the second clutch (K2) and closing the third clutch (K3)
PCT/EP2021/063959 2020-07-01 2021-05-26 Power take-off arrangement WO2022002485A1 (en)

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JP2003136970A (en) * 2001-10-30 2003-05-14 Iseki & Co Ltd Electrically driven power agricultural machine
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