WO2020035238A1 - Power split transmission - Google Patents

Power split transmission Download PDF

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Publication number
WO2020035238A1
WO2020035238A1 PCT/EP2019/068930 EP2019068930W WO2020035238A1 WO 2020035238 A1 WO2020035238 A1 WO 2020035238A1 EP 2019068930 W EP2019068930 W EP 2019068930W WO 2020035238 A1 WO2020035238 A1 WO 2020035238A1
Authority
WO
WIPO (PCT)
Prior art keywords
input shaft
spur gear
power split
split transmission
variator
Prior art date
Application number
PCT/EP2019/068930
Other languages
German (de)
French (fr)
Inventor
Philipp Rechenbach
Benedikt Reick
Raphael Himmelsbach
Giuseppe Muro
Felix GÖTZ
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 WO2020035238A1 publication Critical patent/WO2020035238A1/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
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/36—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings
    • B60K6/365—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings with the gears having orbital motion
    • 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
    • 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
    • B60K17/12—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of electric 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
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
    • B60K6/44—Series-parallel type
    • B60K6/445—Differential gearing distribution 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
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/50—Architecture of the driveline characterised by arrangement or kind of transmission units
    • B60K6/54—Transmission for changing ratio
    • B60K6/547—Transmission for changing ratio the transmission being a stepped 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
    • B60K17/28—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or type of power take-off
    • 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
    • B60K2001/001—Arrangement or mounting of electrical propulsion units one motor mounted on a propulsion axle for rotating right and left wheels of this axle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
    • F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
    • F16H37/04—Combinations of toothed gearings only
    • F16H2037/049—Forward-reverse units with forward and reverse gears for achieving multiple forward and reverse gears, e.g. for working machines
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/62—Hybrid vehicles

Definitions

  • the invention relates to a power split transmission according to the kind defined in the preamble of claim 1.
  • Generic power split transmissions are used in particular for agricultural or municipal utility vehicles.
  • An agricultural utility vehicle of this type is, for example, a tractor.
  • DE 101 28 076 A1 discloses a power split transmission in which an input shaft is passed through the transmission and drives a variator via a spur gear transmission and the input shaft is operatively connected to a power take-off, for example with pumps for the working hydraulics.
  • the drive has several planetary stages and clutches with which travel ranges can be switched, as well as a clutch for forward travel and a clutch for reverse travel, with which the direction of travel can be selected.
  • This type of transmission is also referred to as a primary coupled power split transmission.
  • variator denotes a variator machine in a power split transmission.
  • the present invention has for its object to provide a power-split transmission, by means of which the working hydraulic pumps and the variators can be driven in a simple manner and the transmission can be of modular construction with respect to the variators.
  • the power split transmission has an input shaft which can be connected to a drive motor, for example an internal combustion engine, and which is guided through the entire power split transmission.
  • a drive motor for example an internal combustion engine
  • Several planetary stages are arranged coaxially to this input shaft, which can be controlled with clutches in such a way that several driving ranges are switchable.
  • the couplings are also arranged coaxially to the input shaft.
  • the power split transmission has a clutch for driving forward and a clutch for driving backwards, which is arranged after the planetary stages.
  • a gear wheel is connected to the drive shaft on the end of the input shaft opposite the drive motor.
  • a variator and a power take-off, for example for the working hydraulics and / or the steering pumps, are driven via this gearwheel.
  • the gearwheel which is connected to the input shaft, is operatively connected to a spur gear of a countershaft, the further spur gear of which meshes with the spur gear of the drive shaft of the variator.
  • this spur gear meshes via an idler gear with a spur gear that drives the power take-off shaft.
  • the space next to the planetary stages can be used to arrange the power electronics for the variators, which are designed as electrical machines.
  • the power electronics can be arranged inside the gearbox or outside the gearbox and can be attached to the gearbox.
  • the two variators are designed as electrical machines of almost the same size, as a result of which the variator, which is operatively connected to the planetary stage, can have a lower speed.
  • Fig. 2 shows a power split transmission with the electrical variators between the prime mover and the planetary stages
  • FIG. 4 shows a power split transmission with a variator between the drive machine and the planetary stages and a variator parallel to the input shaft in the region of the planetary stages.
  • a drive machine 1 for example an internal combustion engine or an electric motor, drives an input shaft 3 via a vibration damper 2.
  • the input shaft 3 extends through the entire transmission and drives the gearwheel 4 to which the input shaft 3 is operatively connected.
  • the input shaft 3 can be formed in one piece or in several pieces.
  • the gear 4 of the spur gear 5 drives the spur gear 6.
  • the spur gear 6 is connected to the countershaft 7 and drives the spur gear 8.
  • the spur gear 13, which drives the shaft for the power take-off 14, is driven via the intermediate gear 12.
  • This shaft 14 can be used to drive hydraulic pumps, for example working hydraulics, steering pumps or gear pumps.
  • the drive shaft 10, which drives the variator 11, is connected to the spur gear 9.
  • the variator 11 can be designed as an electrical machine.
  • the variator 11 can be designed as an electrical machine. It However, there is the possibility that the variator 15 is designed as a hydraulic machine. Via the clutches K1, K2, K3 and K4 as well as the brake B, the planetary stage P1, planetary stage P2, planetary stage P3 and planetary stage P4 can be switched so that four driving ranges can be switched. These four driving ranges can be switched in the forward driving direction or reverse driving direction via the directional clutches KV and KR.
  • the variator 11 and the variator 15 are arranged along the input shaft 3 outside the planetary stages P1, P2 and P3.
  • the variator 11 and the variator 15 are preferably not arranged coaxially to one another, but rather are distributed over the circumference of the planetary stages P1, P2 and P3. This makes it possible to design the drive shaft 10 and the drive shaft 16 as a shorter drive shaft.
  • the sun gears of planetary stages P2 and P3 are connected to each other.
  • the parallel wheel of planetary stage P2 and the planet carrier of planetary stage P1 and P3 are connected to each other.
  • the planet gear P1 is connected to the planet carrier P2.
  • the output to the front axle 23 is designed as a spur gear.
  • FIG. 2 differs from the embodiment of FIG. 1 essentially in that the drive shaft 10 is longer and the variator 11 and the variator 15 are arranged between the drive machine 1 and the planetary stage P1 and in that the planetary stage P1, P2, P3 of FIG. 1 have been replaced by a step planetary set and the clutch K3 now couples the planet carrier of the step planetary set to the flute wheel of planetary stage P4, and not, as in FIG. 1, couples the planet carrier of planetary stage P4. Since the variator 11 and the variator 15 can be arranged close to the input shaft 3, one spur gear stage is sufficient to drive the variator 15 up. Furthermore, there is the possibility that the variator 11 and the variator 15 can be arranged in a separate housing. This solution can also be used to create a slim-line power split transmission. Planetary stages P1 and P2 have a common planet carrier on which the step planets are supported. The sun gear of planetary stage P1 is connected to input shaft 3.
  • the structure essentially corresponds to the structure of FIG. 2, the variators 11 and 15 being mounted in a separate gear housing and the drive shaft 10 being made in several pieces. If two electrical variators 11 and 15 of the same size are used, the speed of the variator 11 can be reduced, since the maximum torque of the variator 11 required during operation is smaller than that of the variator 15.
  • FIG. 4 has a variator 15, which is arranged between the drive machine 1 and the planetary stage P1, the variator 11 being arranged outside the planetary stage and thus being parallel in the area of the switching drum 22.
  • the shift drum 22 is shown symbolically for the planetary stages and clutches which the shift drum 22 contains.
  • the working hydraulics should be designed as in Figures 1 to 3.

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

Abstract

The power split transmission has an input shaft (3), which drives the countershaft (7) via the gear (4), which countershaft is operatively connected to the variator (11) and to the auxiliary output shaft (14). It is thus possible to couple the variator (11) and the auxiliary output shaft (14) to the input shaft (3) by means of few cylindrical gears and shafts.

Description

Leistunqsverzweiqunqsqetriebe  Leistunqsverzweiqunqsqetriebe
Die Erfindung betrifft ein Leistungsverzweigungsgetriebe nach der im Oberbegriff von Anspruch 1 näher definierten Art. The invention relates to a power split transmission according to the kind defined in the preamble of claim 1.
Gattungsgemäße Leistungsverzweigungsgetriebe werden insbesondere für landwirt- schaftliche oder kommunale Nutzfahrzeuge verwendet. Ein derartiges landwirtschaft- liches Nutzfahrzeug ist beispielsweise ein Traktor. Generic power split transmissions are used in particular for agricultural or municipal utility vehicles. An agricultural utility vehicle of this type is, for example, a tractor.
Die DE 101 28 076 A1 offenbart ein Leistungsverzweigungsgetriebe, bei welchem eine Eingangswelle durch das Getriebe hindurchgeführt ist und über ein Stirnradge- triebe einen Variator antreibt und die Eingangswelle mit einem Nebenabtrieb, bei- spielsweise mit Pumpen für die Arbeitshydraulik, in Wirkverbindung steht. Der Antrieb weist mehrere Planetenstufen und Kupplungen auf, mit welchen Fahrbereiche schalt- bar sind sowie eine Kupplung für Vorwärtsfahrt und eine Kupplung für Rückwärts- fahrt, mit welcher sich die Fahrtrichtung auswählen lässt. Diese Art von Getriebe wird auch als primär gekoppeltes leistungsverzweigtes Getriebe bezeichnet. DE 101 28 076 A1 discloses a power split transmission in which an input shaft is passed through the transmission and drives a variator via a spur gear transmission and the input shaft is operatively connected to a power take-off, for example with pumps for the working hydraulics. The drive has several planetary stages and clutches with which travel ranges can be switched, as well as a clutch for forward travel and a clutch for reverse travel, with which the direction of travel can be selected. This type of transmission is also referred to as a primary coupled power split transmission.
Der Begriff Variator bezeichnet eine Variatormaschine in einem Leistungsverzwei- gungsgetriebe. The term variator denotes a variator machine in a power split transmission.
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, ein leistungsverzweigtes Ge- triebe zu schaffen, mittels welchem die Arbeitshydraulikpumpen und die Variatoren auf einfache Weise antreibbar sind und das Getriebe bezüglich der Variatoren modu- lar aufgebaut sein kann. The present invention has for its object to provide a power-split transmission, by means of which the working hydraulic pumps and the variators can be driven in a simple manner and the transmission can be of modular construction with respect to the variators.
Die Aufgabe wird mit einem auch die kennzeichnenden Merkmale des Hauptan- spruchs aufweisenden gattungsgemäßen Leistungsverzweigungsgetriebe gelöst.  The object is achieved with a power split transmission of the generic type which also has the characterizing features of the main claim.
Erfindungsgemäß weist das Leistungsverzweigungsgetriebe eine Eingangswelle auf, welche mit einem Antriebsmotor, beispielsweise einem Verbrennungsmotor, verbind- bar ist und welche durch das gesamte Leistungsverzweigungsgetriebe hindurchge- führt ist. Koaxial zu dieser Eingangswelle sind mehrere Planetenstufen angeordnet, welche mit Kupplungen so angesteuert werden können, dass mehrere Fahrbereiche schaltbar sind. Auch die Kupplungen sind koaxial zur Eingangswelle angeordnet.According to the invention, the power split transmission has an input shaft which can be connected to a drive motor, for example an internal combustion engine, and which is guided through the entire power split transmission. Several planetary stages are arranged coaxially to this input shaft, which can be controlled with clutches in such a way that several driving ranges are switchable. The couplings are also arranged coaxially to the input shaft.
Des Weiteren weist das Leistungsverzweigungsgetriebe eine Kupplung für Vorwärts- fahrt und eine Kupplung für Rückwärtsfahrt auf, welche den Planetenstufen nachge- ordnet angeordnet ist. Auf der, dem Antriebsmotor entgegengesetzten Ende der Ein- gangswelle, ist ein Zahnrad mit der Antriebswelle verbunden. Über dieses Zahnrad wird ein Variator und ein Nebenabtrieb, beispielsweise für die Arbeitshydraulik und/o- der die Lenkpumpen, angetrieben. Furthermore, the power split transmission has a clutch for driving forward and a clutch for driving backwards, which is arranged after the planetary stages. A gear wheel is connected to the drive shaft on the end of the input shaft opposite the drive motor. A variator and a power take-off, for example for the working hydraulics and / or the steering pumps, are driven via this gearwheel.
In einer Ausgestaltungsform der Erfindung ist das Zahnrad, welches mit der Ein- gangswelle verbunden ist, in Wirkverbindung mit einem Stirnrad einer Vorgelege- welle, deren weiteres Stirnrad mit dem Stirnrad der Antriebswelle des Variators kämmt. Zusätzlich kämmt dieses Stirnrad über ein Zwischenrad mit einem Stirnrad, welches die Welle des Nebenabtriebs antreibt. Dadurch ist es möglich, die Variatoren entweder seitlich außerhalb der Planetenstufen oder zwischen dem Antriebsmotor und den Planetenstufen anzuordnen. Vorzugsweise sind die Variatoren als elektri- sche Maschinen ausgebildet, welche durch diese Erfindung in einem separaten Ge- triebegehäuse gelagert sein können. Sind die Variatoren außerhalb der Planetenstu- fen angeordnet, so sind die Variatoren parallel zur Eingangswelle angeordnet. In one embodiment of the invention, the gearwheel, which is connected to the input shaft, is operatively connected to a spur gear of a countershaft, the further spur gear of which meshes with the spur gear of the drive shaft of the variator. In addition, this spur gear meshes via an idler gear with a spur gear that drives the power take-off shaft. This makes it possible to arrange the variators either laterally outside the planetary stages or between the drive motor and the planetary stages. The variators are preferably designed as electrical machines, which can be stored in a separate gear housing by this invention. If the variators are arranged outside the planetary stage, the variators are arranged parallel to the input shaft.
Sind die Variatoren nicht neben den Planetenstufen angeordnet, sondern koaxial zu der Eingangswelle, so kann der Raum neben den Planetenstufen genutzt werden um die Leistungselektronik für die Variatoren, welche als elektrische Maschinen ausge- bildet sind, anzuordnen. Die Leistungselektronik kann hierbei innerhalb des Getrie- begehäuses oder außerhalb des Getriebegehäuses angeordnet und am Getriebege- häuse befestigt sein.  If the variators are not arranged next to the planetary stages, but coaxial to the input shaft, the space next to the planetary stages can be used to arrange the power electronics for the variators, which are designed as electrical machines. The power electronics can be arranged inside the gearbox or outside the gearbox and can be attached to the gearbox.
In einer weiteren Ausgestaltungsform der Erfindung sind die beiden Variatoren als elektrische Maschinen nahezu gleicher Größe ausgebildet, wodurch der Variator, welcher mit der Planetenstufe in Wirkverbindung steht, eine niedrigere Drehzahl auf- weisen kann. Dadurch besteht die Möglichkeit, eine verhältnismäßig lange Welle, welche über die gesamte Getriebebaulänge reichen kann, zum Antrieb des Variators, welcher über das Stirnradgetriebe mit der Eingangswelle angetrieben wird, zu ver- wenden. Weitere Merkmale sind der Figurenbeschreibung zu entnehmen. In a further embodiment of the invention, the two variators are designed as electrical machines of almost the same size, as a result of which the variator, which is operatively connected to the planetary stage, can have a lower speed. This makes it possible to use a relatively long shaft, which can extend over the entire length of the transmission, to drive the variator, which is driven by the spur gear with the input shaft. Further features can be found in the description of the figures.
Es zeigen  Show it
Fig. 1 eine Ausgestaltung des Getriebes mit parallel zur Eingangswelle angeordne- ten Variatoren 1 shows an embodiment of the transmission with variators arranged parallel to the input shaft
Fig. 2 ein Leistungsverzweigungsgetriebe mit den elektrischen Variatoren zwischen der Antriebsmaschine und den Planetenstufen Fig. 2 shows a power split transmission with the electrical variators between the prime mover and the planetary stages
Fig. 3 ein Leistungsverzweigungsgetriebe mit den Variatoren in einem separaten Ge- triebegehäuse und 3 shows a power split transmission with the variators in a separate transmission housing and
Fig. 4 ein Leistungsverzweigungsgetriebe mit einem Variator zwischen der Antriebs- maschine und den Planetenstufen und einem Variator parallel zur Eingangs- welle im Bereich der Planetenstufen. 4 shows a power split transmission with a variator between the drive machine and the planetary stages and a variator parallel to the input shaft in the region of the planetary stages.
Figur 1 : Figure 1:
Eine Antriebsmaschine 1 , beispielsweise ein Verbrennungsmotor oder ein Elektromo- tor, treibt über einen Schwingungsdämpfer 2 eine Eingangswelle 3 an. Die Eingangs- welle 3 erstreckt sich durch das gesamte Getriebe und treibt das Zahnrad 4 an, mit welchem die Eingangswelle 3 wirkverbunden ist. Die Eingangswelle 3 kann einstü- ckig oder mehrstückig ausgebildet sein. Das Zahnrad 4 des Stirnradgetriebes 5 treibt das Stirnrad 6 an. Das Stirnrad 6 ist mit der Vorgelegewelle 7 verbunden und treibt das Stirnrad 8 an. Über das Zwischenrad 12 wird das Stirnrad 13 angetrieben, wel- ches die Welle für den Nebenabtrieb 14 antreibt. Mit dieser Welle 14 können hydrau- lische Pumpen, beispielsweise der Arbeitshydraulik, der Lenkpumpen oder Getriebe- pumpe angetrieben werden. Mit dem Stirnrad 9 ist die Antriebswelle 10 verbunden, welche den Variator 11 antreibt. Der Variator 11 kann als elektrische Maschine aus- gebildet sein. Es besteht jedoch auch die Möglichkeit, den Variator 11 als hydrauli sche Maschine auszubilden. Das Sonnenrad 20 der ersten Planetenstufe P1 ist mit dem Stirnrad 17 in Wirkverbindung, welches mit dem Stirnrad 21 kämmt. Das Stirn- rad 21 ist mit der Antriebswelle 16 verbunden, welche mit dem Variator 15 in Wirkver- bindung steht. Der Variator 15 kann als elektrische Maschine ausgebildet sein. Es besteht jedoch die Möglichkeit, dass der Variator 15 als hydraulische Maschine aus- gebildet ist. Über die Kupplungen K1 , K2, K3 und K4 sowie der Bremse B lassen sich die Planetenstufe P1 , Planetenstufe P2, Planetenstufe P3 und Planetenstufe P4 so schalten, dass vier Fahrbereiche schaltbar sind. Diese vier Fahrbereiche lassen sich über die Fahrtrichtungskupplungen KV und KR in Vorwärtsfahrtrichtung oder Rück- wärtsfahrtrichtung schalten. Entlang der Eingangswelle 3 ist der Variator 11 und der Variator 15 außerhalb der Planetenstufen P1 , P2 und P3 angeordnet. Vorzugsweise ist der Variator 11 und der Variator 15 nicht koaxial zueinander angeordnet, sondern verteilt am Umfang der Planetenstufen P1 , P2 und P3 angeordnet. Dadurch ist es möglich, die Antriebswelle 10 und die Antriebswelle 16 als kürzere Antriebswelle aus- zubilden. Die Sonnenräder der Planetenstufe P2 und P3 sind miteinander verbun- den. Das Flohlrad der Planetenstufe P2 und der Planetenträger der Planetenstufe P1 und P3 sind miteinander verbunden. Das Flohlrad der Planetenstufe P1 ist mit dem Planetenträger der Planetenstufe P2 verbunden. A drive machine 1, for example an internal combustion engine or an electric motor, drives an input shaft 3 via a vibration damper 2. The input shaft 3 extends through the entire transmission and drives the gearwheel 4 to which the input shaft 3 is operatively connected. The input shaft 3 can be formed in one piece or in several pieces. The gear 4 of the spur gear 5 drives the spur gear 6. The spur gear 6 is connected to the countershaft 7 and drives the spur gear 8. The spur gear 13, which drives the shaft for the power take-off 14, is driven via the intermediate gear 12. This shaft 14 can be used to drive hydraulic pumps, for example working hydraulics, steering pumps or gear pumps. The drive shaft 10, which drives the variator 11, is connected to the spur gear 9. The variator 11 can be designed as an electrical machine. However, there is also the possibility of training the variator 11 as a hydraulic machine. The sun gear 20 of the first planetary stage P1 is in operative connection with the spur gear 17, which meshes with the spur gear 21. The spur gear 21 is connected to the drive shaft 16, which is operatively connected to the variator 15. The variator 15 can be designed as an electrical machine. It However, there is the possibility that the variator 15 is designed as a hydraulic machine. Via the clutches K1, K2, K3 and K4 as well as the brake B, the planetary stage P1, planetary stage P2, planetary stage P3 and planetary stage P4 can be switched so that four driving ranges can be switched. These four driving ranges can be switched in the forward driving direction or reverse driving direction via the directional clutches KV and KR. The variator 11 and the variator 15 are arranged along the input shaft 3 outside the planetary stages P1, P2 and P3. The variator 11 and the variator 15 are preferably not arranged coaxially to one another, but rather are distributed over the circumference of the planetary stages P1, P2 and P3. This makes it possible to design the drive shaft 10 and the drive shaft 16 as a shorter drive shaft. The sun gears of planetary stages P2 and P3 are connected to each other. The parallel wheel of planetary stage P2 and the planet carrier of planetary stage P1 and P3 are connected to each other. The planet gear P1 is connected to the planet carrier P2.
Der Abtrieb zur Vorderachse 23 ist als Stirnrad ausgebildet. Indem der Abtrieb zur Vorderachse 23 zwischen dem Abtrieb zur Flinterachse 19 und dem Zahnrad 4 ange- ordnet ist, ist es möglich das Zahnrad 4 mit einem großen Durchmesser auszubilden und die Vorgelegewelle 7 ohne Zwischenrad mit der Eingangswelle 3 zu verbinden.  The output to the front axle 23 is designed as a spur gear. By arranging the output to the front axle 23 between the output to the flinter axis 19 and the gear 4, it is possible to design the gear 4 with a large diameter and to connect the countershaft 7 to the input shaft 3 without an intermediate gear.
Figur 2: Figure 2:
Die Ausführung der Fig. 2 unterscheidet sich von der Ausführung der Fig. 1 im We- sentlichen dadurch, dass die Antriebswelle 10 länger ausgeführt ist und der Variator 11 und der Variator 15 zwischen der Antriebsmaschine 1 und der Planetenstufe P1 angeordnet ist und dass die Planetenstufe P1 , P2, P3 der Figur 1 durch einen Stu- fenplanetensatz ersetzt wurden und die Kupplung K3 jetzt den Planetenträger des Stufenplanetensatzes mit dem Flohlrad der Planetenstufe P4 koppelt, und nicht wie in Figur 1 den Planetenträger der Planetenstufe P4 koppelt. Indem der Variator 11 und der Variator 15 nahe an die Eingangswelle 3 angeordnet sein können, reicht eine Stirnradstufe aus, um den Variator 15 hochzutreiben. Des Weiteren besteht die Möglichkeit, dass der Variator 11 und der Variator 15 in einem separaten Gehäuse angeordnet sein können. Des Weiteren kann durch diese Lösung ein schmal bauen- des leistungsverzweigtes Getriebe geschaffen werden. Die Planetenstufen P1 und P2 weisen einen gemeinsamen Planetenträger auf, auf dem die Stufenplaneten gela- gert sind. Das Sonnenrad der Planetenstufe P1 ist mit der Eingangswelle 3 verbun- den. The embodiment of FIG. 2 differs from the embodiment of FIG. 1 essentially in that the drive shaft 10 is longer and the variator 11 and the variator 15 are arranged between the drive machine 1 and the planetary stage P1 and in that the planetary stage P1, P2, P3 of FIG. 1 have been replaced by a step planetary set and the clutch K3 now couples the planet carrier of the step planetary set to the flute wheel of planetary stage P4, and not, as in FIG. 1, couples the planet carrier of planetary stage P4. Since the variator 11 and the variator 15 can be arranged close to the input shaft 3, one spur gear stage is sufficient to drive the variator 15 up. Furthermore, there is the possibility that the variator 11 and the variator 15 can be arranged in a separate housing. This solution can also be used to create a slim-line power split transmission. Planetary stages P1 and P2 have a common planet carrier on which the step planets are supported. The sun gear of planetary stage P1 is connected to input shaft 3.
Figur 3: Figure 3:
Der Aufbau entspricht im Wesentlichen dem Aufbau der Fig. 2, wobei die Variatoren 11 und 15 in einem separaten Getriebegehäuse gelagert sind und die Antriebswelle 10 mehrstückig ausgeführt ist. Werden zwei gleich große elektrische Variatoren 11 und 15 verwendet, so kann die Drehzahl des Variators 11 verringert werden, da das im Betrieb maximal erforderliche Drehmoment des Variators 11 kleiner ist als das des Variators 15.  The structure essentially corresponds to the structure of FIG. 2, the variators 11 and 15 being mounted in a separate gear housing and the drive shaft 10 being made in several pieces. If two electrical variators 11 and 15 of the same size are used, the speed of the variator 11 can be reduced, since the maximum torque of the variator 11 required during operation is smaller than that of the variator 15.
Figur 4: Figure 4:
Die Ausführung der Fig. 4 weist einen Variator 15 auf, welcher zwischen der An- triebsmaschine 1 und der Planetenstufe P1 angeordnet ist, wobei der Variator 11 au- ßerhalb der Planetenstufe angeordnet ist und somit parallel im Bereich der Schalt- walze 22 sich befindet. Die Schaltwalze 22 ist symbolhaft für die Planetenstufen und Kupplungen dargestellt, welche die Schaltwalze 22 beinhaltet. Die Arbeitshydraulik soll wie in den Figuren 1 bis 3 ausgebildet sein. The embodiment of FIG. 4 has a variator 15, which is arranged between the drive machine 1 and the planetary stage P1, the variator 11 being arranged outside the planetary stage and thus being parallel in the area of the switching drum 22. The shift drum 22 is shown symbolically for the planetary stages and clutches which the shift drum 22 contains. The working hydraulics should be designed as in Figures 1 to 3.
Bezuqszeichen Antriebsmaschine Reference sign drive machine
Schwingungsdämpfer  vibration
Eingangswelle  input shaft
Zahnrad  gear
Stirnradgetriebe  Spur gears
Stirnrad  spur gear
Vorgelegewelle  Countershaft
Stirnrad  spur gear
Stirnrad  spur gear
10 Antriebswelle  10 drive shaft
11 Variator  11 variator
12 Zwischenrad  12 idler gear
13 Stirnrad  13 spur gear
14 Welle für den Nebenabtrieb  14 PTO shaft
15 Variator  15 variator
16 Antriebswelle  16 drive shaft
17 Stirnrad  17 spur gear
18 Stirnrad  18 spur gear
19 Abtrieb zur Hinterachse  19 Downforce to the rear axle
20 Sonnenrad  20 sun gear
21 Stirnrad  21 spur gear
22 Schaltwalze  22 shift drum
23 Abtrieb zur Vorderachse  23 Downforce to the front axle
K1 Kupplung  K1 clutch
K2 Kupplung  K2 clutch
K3 Kupplung  K3 clutch
K4 Kupplung  K4 clutch
B Bremse  B brake
P1 Planetenstufe  P1 planetary stage
P2 Planetenstufe  P2 planetary stage
P3 Planetenstufe P4 Planetenstufe P3 planetary stage P4 planetary stage
KV Fahrtrichtungskupplung KV directional clutch
KR Fahrtrichtungskupplung KR travel direction clutch

Claims

Patentansprüche claims
1. Leistungsverzweigungsgetriebe mit einer Eingangswelle (3), welche mit einer An- triebsmaschine (1 ) verbindbar ist, mit mehreren koaxial zur Eingangswelle (3) ange- ordneten Planetenstufen (P1 , P2, P3) und mit Kupplungen (K1 , K2, K3, K4), mittels welchen mehrere Fahrbereiche schaltbar sind und mit einer Kupplung für Vorwärts- fahrt (KV) und einer Kupplung für Rückwärtsfahrt (KR), wobei die Eingangswelle (3) durch das Leistungsverzweigungsgetriebe hindurchgeführt ist und am Ende der Ein- gangswelle (3), welches der Antriebsmaschine (1 ) gegenüberliegt, die Eingangswelle (3) mit einem Zahnrad (4) eines Stirnradgetriebes (5) verbunden ist und ein erster Variator (11 ) mit diesem Stirnradgetriebe (5) in Wirkverbindung steht und ein zweiter Variator (15) mit einer Planetenstufe (P1 ) in Wirkverbindung steht, dadurch gekenn- zeichnet, dass entlang der Erstreckung der Eingangswelle (3) die Kupplung für Vor- wärtsfahrt (KV) und die Kupplung für Rückwärtsfahrt (KR) zwischen den Variatoren (11 , 15) und dem Zahnrad (4) des Stirnradgetriebes (5), welches mit der Eingangs- welle (3) verbunden ist, angeordnet ist. 1. Power split transmission with an input shaft (3) which can be connected to a drive machine (1), with several planetary stages (P1, P2, P3) arranged coaxially to the input shaft (3) and with clutches (K1, K2, K3 , K4), by means of which several driving ranges can be switched and with a clutch for forward drive (KV) and a clutch for reverse drive (KR), the input shaft (3) being passed through the power split transmission and at the end of the input shaft (3 ), which is opposite the drive machine (1), the input shaft (3) is connected to a gear (4) of a spur gear (5) and a first variator (11) is operatively connected to this spur gear (5) and a second variator (15 ) is in operative connection with a planetary stage (P1), characterized in that the clutch for forward travel (KV) and the clutch for reverse travel (KR) between the. along the extension of the input shaft (3) Variators (11, 15) and the gear (4) of the spur gear (5), which is connected to the input shaft (3), is arranged.
2. Leistungsverzweigungsgetriebe mit einer Eingangswelle (3), welche mit einer An- triebsmaschine (1 ) verbindbar ist, mit mehreren koaxial zur Eingangswelle (3) ange- ordneten Planetenstufen (P1 , P2, P3) und mit Kupplungen (K1 , K2, K3, K4), mittels welchen mehrere Fahrbereiche schaltbar sind und mit einer Kupplung für Vorwärts- fahrt (KV) und einer Kupplung für Rückwärtsfahrt (KR), wobei die Eingangswelle (3) durch das Leistungsverzweigungsgetriebe hindurchgeführt ist und am Ende der Ein- gangswelle (3), welches der Antriebsmaschine (1 ) gegenüberliegt, die Eingangswelle (3) mit einem Zahnrad (4) eines Stirnradgetriebes (5) verbunden ist und ein erster Variator (11 ) mit diesem Stirnradgetriebe (5) in Wirkverbindung steht und ein zweiter Variator (15) mit einer Planetenstufe (P1 ) in Wirkverbindung steht, dadurch gekenn- zeichnet, dass der erste Variator (11 ) mit der Eingangswelle (3) über eine Vorgelege- welle (7) und vier Stirnräder (4, 8, 6, 9) gekoppelt ist. 2. Power split transmission with an input shaft (3) which can be connected to a drive machine (1), with several planetary stages (P1, P2, P3) arranged coaxially to the input shaft (3) and with clutches (K1, K2, K3 , K4), by means of which several driving ranges can be switched and with a clutch for forward drive (KV) and a clutch for reverse drive (KR), the input shaft (3) being passed through the power split transmission and at the end of the input shaft (3 ), which is opposite the drive machine (1), the input shaft (3) is connected to a gear (4) of a spur gear (5) and a first variator (11) is operatively connected to this spur gear (5) and a second variator (15 ) is in operative connection with a planetary stage (P1), characterized in that the first variator (11) is coupled to the input shaft (3) via a countershaft (7) and four spur gears (4, 8, 6, 9) is.
3. Leistungsverzweigungsgetriebe nach Anspruch 1 , dadurch gekennzeichnet, dass die Variatoren (11 , 15) entlang der Erstreckung der Eingangswelle (3) im Bereich der Planetenstufen (P1 , P2, P3) und der Kupplungen (K1 , K2, K3, K4), mit welchen die Fahrbereiche schaltbar sind, angeordnet ist. 3. Power split transmission according to claim 1, characterized in that the variators (11, 15) along the extension of the input shaft (3) in the region of the planetary stages (P1, P2, P3) and the clutches (K1, K2, K3, K4), with which the driving ranges are switchable.
4. Leistungsverzweigungsgetriebe nach Anspruch 1 , dadurch gekennzeichnet, dass die Variatoren (11 , 15) entlang der Erstreckung der Eingangswelle (3) zwischen der Antriebsmaschine (1 ) und der Planetenstufe (P1 ) angeordnet ist. 4. Power split transmission according to claim 1, characterized in that the variators (11, 15) along the extension of the input shaft (3) between the drive machine (1) and the planetary stage (P1) is arranged.
5. Leistungsverzweigungsgetriebe nach Anspruch 1 , dadurch gekennzeichnet, dass das Leistungsverzweigungsgetriebe einen Getriebegehäuseabschnitt aufweist, in welchem die Variatoren (11 , 15) angeordnet sind und einen von diesem getrennten Gehäuseabschnitt aufweist, in welchem die Planetenstufen (P1 , P2, P3) angeordnet sind. 5. Power split transmission according to claim 1, characterized in that the power split transmission has a gear housing section in which the variators (11, 15) are arranged and a separate housing section in which the planetary stages (P1, P2, P3) are arranged.
6. Leistungsverzweigungsgetriebe nach Anspruch 1 , dadurch gekennzeichnet, dass der Variator (11 ), welcher mit der Eingangswelle (3) in Wirkverbindung steht, an der Außenseite der Planetenstufen (P1 , P2, P3) angeordnet ist und der Variator (15), welcher mit der Planetenstufe (P1 ) in Wirkverbindung steht, entlang der Erstreckung der Eingangswelle (3) zwischen dem Ende der Eingangswelle (3), welches mit der Antriebsmaschine (1 ) verbindbar ist und den Planetenstufen (P1 , P2, P3) angeordnet ist. 6. Power split transmission according to claim 1, characterized in that the variator (11), which is operatively connected to the input shaft (3), is arranged on the outside of the planetary stages (P1, P2, P3) and the variator (15), which is in operative connection with the planetary stage (P1) along the extension of the input shaft (3) between the end of the input shaft (3), which can be connected to the drive machine (1) and the planetary stages (P1, P2, P3).
7. Leistungsverzweigungsgetriebe nach Anspruch 1 , dadurch gekennzeichnet, dass der Variator (11 ), welcher mit der Eingangswelle (3) in Wirkverbindung steht, eine Antriebswelle (10) aufweist, welche mit dem Stirnrad (9) verbunden ist, welches mit dem Stirnrad (8) einer Vorgelegewelle (7) im Eingriff steht, wobei die Vorgelegewelle (7) mit einem weiteren Stirnrad (6) verbunden ist, welches mit dem Zahnrad (4) des Stirnradgetriebes (5) kämmt, welches mit der Eingangswelle (3) verbunden ist. 7. Power split transmission according to claim 1, characterized in that the variator (11) which is operatively connected to the input shaft (3) has a drive shaft (10) which is connected to the spur gear (9) which is connected to the spur gear ( 8) a countershaft (7) is engaged, the countershaft (7) being connected to a further spur gear (6) which meshes with the gear (4) of the spur gear (5) which is connected to the input shaft (3) ,
8. Leistungsverzweigungsgetriebe nach Anspruch 7, dadurch gekennzeichnet, dass eine Nebenabtriebswelle (14) zum Antrieb von Nebenverbrauchern mit einem Stirn- rad (13) verbunden ist, welches über ein weiteres Stirnrad (12) mit dem Stirnrad (8) der Vorgelegewelle (7) kämmt. 8. Power split transmission according to claim 7, characterized in that a power take-off shaft (14) for driving auxiliary consumers is connected to a spur gear (13) which is connected to the spur gear (8) of the countershaft (7) via a further spur gear (12). combs.
9. Leistungsverzweigungsgetriebe nach Anspruch 6, dadurch gekennzeichnet, dass das Stirnrad (9), welches mit der Antriebswelle des Variators (11 ) verbunden ist, mit einem Stirnrad (8) der Vorgelegewelle (7) kämmt, welche über das weitere Stirnrad (12) mit dem Stirnrad (13) der Nebenabtriebswelle (14) kämmt. 9. Power split transmission according to claim 6, characterized in that the spur gear (9) which is connected to the drive shaft of the variator (11) with a spur gear (8) of the countershaft (7) which meshes with the spur gear (13) of the power take-off shaft (14) via the further spur gear (12).
10. Leistungsverzweigungsgetriebe nach Anspruch 1 , dadurch gekennzeichnet, dass die Variatoren (11 , 15) als elektrische Maschinen ausgebildet sind. 10. Power split transmission according to claim 1, characterized in that the variators (11, 15) are designed as electrical machines.
11. Leistungsverzweigungsgetriebe nach Anspruch 1 , dadurch gekennzeichnet, dass die Variatoren (11 , 15) koaxial zur Eingangswelle (3) angeordnet sind. 11. Power split transmission according to claim 1, characterized in that the variators (11, 15) are arranged coaxially to the input shaft (3).
12. Leistungsverzweigungsgetriebe nach Anspruch 1 , dadurch gekennzeichnet, dass die Variatoren (11 , 15) an entgegengesetzten Stellen außerhalb der Planetenstufen (P1 , P2, P3) angeordnet sind. 12. Power split transmission according to claim 1, characterized in that the variators (11, 15) are arranged at opposite locations outside the planetary stages (P1, P2, P3).
13. Leistungsverzweigungsgetriebe nach Anspruch 1 , dadurch gekennzeichnet, dass die Variatoren (11 , 15) nahezu die gleiche Größe aufweisen. 13. Power split transmission according to claim 1, characterized in that the variators (11, 15) have almost the same size.
14. Leistungsverzweigungsgetriebe nach Anspruch 2, dadurch gekennzeichnet, dass ein Stirnrad (9) mit dem ersten Variator (11 ) drehfest verbunden ist, zwei Stirnräder (8, 6) mit der Vorgelegewelle (7) drehfest verbunden sind und ein Stirnrad (4) mit der Eingangswelle (3) drehfest verbunden ist. 14. Power split transmission according to claim 2, characterized in that a spur gear (9) with the first variator (11) is rotatably connected, two spur gears (8, 6) with the countershaft (7) are rotatably connected and a spur gear (4) with the input shaft (3) is rotatably connected.
PCT/EP2019/068930 2018-08-17 2019-07-15 Power split transmission WO2020035238A1 (en)

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DE102012204477A1 (en) * 2012-03-21 2013-09-26 Zf Friedrichshafen Ag Transmission device with at least one electric variator for continuously varying a ratio and power split
US20170284517A1 (en) * 2013-12-31 2017-10-05 Deere & Company Multi-mode infinitely variable transmission that provides seamless shifting
WO2017049049A1 (en) * 2015-09-17 2017-03-23 Dana Limited Hybrid electric powertrain configurations with a ball variator used as a continuously variable mechanical transmission

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230147860A1 (en) * 2020-09-29 2023-05-11 Hitachi Construction Machinery Co., Ltd. Speed-Changing Device
US11674576B2 (en) * 2020-09-29 2023-06-13 Hitachi Construction Machinery Co., Ltd. Speed-changing device

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