CN112013086A - Auxiliary power output transmission and agricultural working machine - Google Patents

Auxiliary power output transmission and agricultural working machine Download PDF

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Publication number
CN112013086A
CN112013086A CN202010468323.9A CN202010468323A CN112013086A CN 112013086 A CN112013086 A CN 112013086A CN 202010468323 A CN202010468323 A CN 202010468323A CN 112013086 A CN112013086 A CN 112013086A
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CN
China
Prior art keywords
driven
drive
idlers
shaft
transmission
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.)
Pending
Application number
CN202010468323.9A
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Chinese (zh)
Inventor
C·鲍尔
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ZF Friedrichshafen AG
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ZF Friedrichshafen AG
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Filing date
Publication date
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Publication of CN112013086A publication Critical patent/CN112013086A/en
Pending legal-status Critical Current

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    • 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
    • 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
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
    • F16H3/20—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially using gears that can be moved out of gear
    • 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
    • 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
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
    • F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
    • F16H3/087—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears
    • F16H3/093—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears with two or more countershafts
    • 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
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
    • 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
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/30—Constructional features of the final output mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/20—Off-Road Vehicles
    • B60Y2200/22—Agricultural vehicles
    • 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
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
    • F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
    • F16H2003/0826—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts wherein at least one gear on the input shaft, or on a countershaft is used for two different forward gear ratios
    • 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
    • F16H2200/00—Transmissions for multiple ratios
    • F16H2200/0004—Transmissions for multiple ratios comprising a power take off shaft
    • 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
    • F16H2200/00—Transmissions for multiple ratios
    • F16H2200/003—Transmissions for multiple ratios characterised by the number of forward speeds
    • F16H2200/0043—Transmissions for multiple ratios characterised by the number of forward speeds the gear ratios comprising four forward speeds

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Structure Of Transmissions (AREA)

Abstract

The invention relates to an auxiliary power take-off transmission (1) for a motor vehicle, comprising a drive shaft on which a plurality of drive idlers and at least one shifting element assigned to the plurality of drive idlers are arranged, with the aid of actuation of the at least one shifting element assigned to the plurality of drive idlers, the respective individual drive idler being able to be drivingly coupled to the drive shaft or drivingly decoupled from the drive shaft, and with the aid of actuation of the at least one shifting element assigned to the plurality of driven idlers, with the aid of which the respective individual driven idler can be drivingly coupled to the driven shaft or drivingly decoupled from the driven shaft, with which the respective drive idler is in engagement. Also included is a multi-spur gear in engagement with at least two driven idler gears. The invention also relates to a corresponding agricultural work machine.

Description

Auxiliary power output transmission and agricultural working machine
Technical Field
The present invention relates to an auxiliary power take-off transmission according to the preamble of claim 1 and to an agricultural work machine.
Background
Power output shaft transmissions, in particular for agricultural work machines, which are able to drive a drivable work implement that can be coupled to the work machine, are known from the prior art. Examples of such drivable work implements are, for example, lawnmowers, bale balers or fertilizer spreaders. In general, known power take-off shaft transmissions have a plurality of shiftable gear stages which place the rotational speed of the drive aggregate of the work machine and the output rotational speed of the power take-off shaft in adjustable proportions.
In this respect, DE 102011084623 a1 describes an auxiliary power take-off transmission in the form of a power take-off shaft transmission, in which a drive shaft can be coupled via one of a plurality of intermediate gear stages to a driven shaft which extends axially offset relative to the drive shaft, so that the respective associated gear ratio is defined. In this case, the gear stages are each assigned to one of two sub-transmissions, wherein each sub-transmission has an input shaft which can be coupled in a rotationally fixed manner to a drive shaft via a respective powershift element. Furthermore, the input shafts are arranged coaxially with one another and the power shifting elements are combined to form a double clutch, so that the auxiliary power take-off transmission is generally designed as a type of double clutch transmission. The change between the various gear ratios that can be formed can then be carried out under load in that: when the drive shaft and the output shaft are coupled by the transmission ratio of one sub-transmission, the adjacent transmission ratio is preselected in the corresponding other sub-transmission, and then the shift is performed by switching between the power shift elements.
However, the known power takeoff transmissions or auxiliary power takeoff transmissions are at present disadvantageous because they are formed with relatively high outlay.
Disclosure of Invention
The object of the present invention is to propose an improved auxiliary power take-off transmission.
According to the invention, this object is achieved by an auxiliary power take-off transmission according to claim 1. Advantageous embodiments and developments of the invention emerge from the dependent claims.
The invention relates to an auxiliary power take-off transmission for a motor vehicle, comprising a drive shaft and a driven shaft, wherein a plurality of drive idlers and at least one shifting element assigned to the plurality of drive idlers are arranged on the drive shaft, wherein by means of actuating the at least one shifting element assigned to the plurality of drive idlers, the respective individual drive idler can be drivingly coupled to the drive shaft or drivingly decoupled from the drive shaft, wherein a plurality of driven idlers and at least one shifting element assigned to the plurality of driven idlers are arranged on the driven shaft, wherein by means of actuating the at least one shifting element assigned to the plurality of driven idlers, the respective individual driven idler can be drivingly coupled to the driven shaft or drivingly decoupled from the driven shaft, and wherein the respective driving idler is in engagement with the respective driven idler. The auxiliary power output transmission according to the invention is characterized in that it further comprises a multi-spur gear in engagement with at least two driven idler gears.
Thus, according to the invention, an auxiliary power take-off transmission is proposed, which comprises a drive shaft and a driven shaft, wherein a plurality of drive idlers are arranged on the drive shaft and a plurality of driven idlers are arranged on the driven shaft. Preferably, the auxiliary power take-off transmission comprises a single drive shaft and a single driven shaft. Here, the respective driving idler is in engagement with the respective driven idler. Additionally, at least one shifting element assigned to a plurality of driving idlers is provided on the drive shaft and at least one shifting element assigned to a plurality of driven idlers is provided on the driven shaft. When actuating at least one shifting element assigned to the plurality of drive idlers, depending on the type of actuation, the individual drive idlers are drivingly coupled with the drive shaft, i.e. are rotationally fixedly connected with the drive shaft, or are drivingly decoupled from the drive shaft, so that thus no rotationally fixed connection is present between the individual drive idlers and the drive shaft. The shifting element thus functionally forms a clutch for transmitting a rotational movement from the drive shaft to the individual drive wheels or vice versa. In a similar manner, when at least one shifting element assigned to a plurality of driven idlers is actuated, the individual driven idlers are drivingly coupled to or decoupled from the driven shaft. Thus, different gear stages of the auxiliary power take-off transmission can be selected by corresponding actuation of the correspondingly assigned shift elements. An uncoupled neutral state or idle rotation is established if all the shifting elements are actuated such that at least no driving idler is coupled to the driving shaft and possibly also no driven idler is coupled to the driven shaft. Finally, an auxiliary power output transmission according to the present invention includes a plurality of spur gears in engagement with at least two of the plurality of driven idler gears. Preferably, the multi-spur gear is constituted by just as many single spur gears as the driven idler gears comprised by the auxiliary power take-off transmission, and therefore the number of single spur gears of the multi-spur gear is therefore the same as the number of driven idler gears. Thus, if the auxiliary power output transmission comprises, for example, three driven idlers, i.e. if the number of driven idlers is three, the multi-spur gear is likewise constituted by three single spur gears. Advantageously, a multiple spur gear refers to a plurality of single spur gears welded or otherwise fixedly rotationally connected to one another. The multiple spur gears do not in particular relate to single spur gears arranged on further shafts. The multiple spur gears used according to the invention form a simple and cost-effective producible alternative to a single spur gear arranged on a shaft. Furthermore, when using multiple spur gears, no additional shifting elements are required in order to couple one or more individual spur gears of the multiple spur gears to the shaft in order to further conduct the load flow or to decouple it again, since the individual spur gears of the multiple spur gears are naturally rotationally fixedly connected to one another. This in turn reduces the cost, weight and required structural space of the auxiliary power take-off transmission.
It is preferably provided that the axes of rotation of the drive shaft and the driven shaft and of the multiple spur gears are arranged parallel to one another.
Preferably, it is provided that the shifting elements assigned to the drive idlers are formed as power shiftable clutches. It is also preferred that at least one shifting element assigned to a plurality of driven idlers is also formed as a power shiftable clutch. In this case, the torque transmission to the drive shaft or to the output shaft does not have to be interrupted in order to actuate a corresponding shifting element or a plurality of corresponding shifting elements. A power shiftable clutch allows shifting from an engaged gear stage to a gear stage to be shifted, wherein the rotational speeds of the shifting elements can be synchronized by means of what is known as "slipping", so that a substantially smooth shift can be ensured.
In particular, it is preferably provided that the drive connection between the drive shaft and the drive unit is permanent, i.e. the drive shaft is permanently driven. However, it is possible to decouple all the driven idlers from the drive shaft in terms of drive by means of the shifting elements assigned to the plurality of driven idlers, which in turn interrupts the load flow from the drive shaft to the output shaft. It is likewise possible to decouple all driven idlers from the output shaft in terms of drive by means of shifting elements assigned to a plurality of driven idlers, so that in this way a load flow from the drive shaft to the output shaft can likewise be interrupted.
According to a preferred embodiment of the invention, it is provided that the respective drive idler and the single spur gear of the multiple spur gears are in engagement with a common driven idler. This achieves the following advantages: a plurality of shiftable gear stages of the auxiliary power take-off transmission can be formed in a relatively simple manner cost-effectively by using relatively few driving idle wheels or few driven idle wheels. This also achieves a reduction in the required installation space and the required weight. For example, a total of only six gears are required for forming four shiftable gear stages, i.e. a total of six single spur gears for driving the idler gear, the driven idler gear and the multiple spur gears. In contrast, the auxiliary power take-off transmissions known from the prior art require eight gears in order to form four shiftable gear stages.
According to a further preferred embodiment of the invention, a main shifting element for interrupting the transmission of torque to the drive shaft is arranged on the drive shaft. Thus, the auxiliary power take-off transmission may be completely decoupled from the torque supply source. Correspondingly, if the auxiliary power take-off transmission is not required and is not in operation, losses due to friction in the auxiliary power take-off transmission can be avoided. The efficiency of the powertrain of a vehicle comprising an auxiliary power take-off transmission can thus be improved.
It is particularly preferably provided that at least one shifting element assigned to the plurality of driven idlers is formed as a clutch which cannot be power-shifted. It is also preferred that at least one shifting element assigned to the driven idlers is also formed as a clutch which is not power shiftable. During a gear shift, i.e. when one of the two shifting elements is actuated, the transmission of torque to the drive shaft is advantageously interrupted by means of the main shifting element, so that actuation of a corresponding shifting element or a plurality of corresponding shifting elements can be achieved. In this case, the main shifting element is preferably formed to be power shiftable.
According to a further preferred embodiment of the invention, it is provided that the shifting elements assigned to the driven idlers and the shifting elements assigned to the driven idlers are each formed as a sliding sleeve with a sleeve carrier and/or as a multiplate clutch which can be actuated electrohydraulic. This design has proven to be suitable and cost effective in terms of manufacturing. The design of the electrohydraulic multi-disk clutch is particularly suitable for the implementation of the shifting element as a power shifting element.
According to a further preferred embodiment of the invention, it is provided that two drive idlers are arranged on the drive shaft; two driven idle wheels are arranged on the driven shaft; and the multiple spur gears are formed as double spur gears. This design can be implemented: two torque transmission branches are formed from the drive shaft to the driven shaft via the double spur gear and two further torque transmission branches are formed from the drive shaft directly to the driven shaft. Thus, in the case of only six gears, i.e. a total of six single spur gears driving the idler, the driven idler and the multiple spur gears, four gear stages can be realized.
According to a particularly preferred embodiment of the invention, it is provided that the ratio of the pitch circle diameters of the respective two drive and driven idler gears engaging with one another and of the respective two driven idler gears engaging with one another and of the single spur gear of the double spur gear is designed such that, at a standardized input rotational speed, the output rotational speed of the auxiliary power take-off transmission corresponds to a standardized power take-off shaft stage. The following advantages are thereby obtained: the output shaft can drive the setting devices (for example, lawnmowers, hay balers, and seeders) which can be driven on an auxiliary power output transmission and which are usually designed to be driven at a standardized input rotational speed. In this case, the person skilled in the art knows various standardized power take-off shaft stages which, at a certain engine speed, provide a correspondingly determined rotational speed of the output shaft. However, via the auxiliary power take-off transmission, the rotational speed of the driven shaft is still proportional to the engine speed and correspondingly varies with the engine speed in accordance with the indication of varying engine speed. Known power take-off shaft stages are, for example, "540", "540E", "1000" or "1000E".
According to a further particularly preferred embodiment of the invention, it is provided that the shifting elements assigned to the two driven idler wheels are arranged between the two first driven idler wheels and/or the shifting elements assigned to the two driven idler wheels are arranged between the two driven idler wheels. This makes it possible to achieve a simple coupling or decoupling of the drive connection between the drive shaft and the respective drive idler or between the driven shaft and the respective driven idler, and has proven to be particularly suitable when operating the auxiliary power take-off transmission according to the invention.
According to another preferred embodiment of the invention, the end of the output shaft is formed as a power output shaft end. The coupling and the operation of the setting device can thus be realized in a simple manner.
According to a further preferred embodiment of the invention, it is provided that the drive shaft can be coupled in terms of drive to a drive unit of the motor vehicle in such a way that the rotational speed of the drive shaft is the same as the output rotational speed of the drive unit. Typically, when the setting device is driven, the output rotational speed of the drive unit is then set in an operating mode for driving the power take-off shaft head. This facilitates the driving of the setting tool.
The invention also relates to an agricultural work machine comprising an auxiliary power take-off transmission according to the invention. The use of the auxiliary power output transmission according to the invention in an agricultural work machine achieves the advantages already described in connection with the auxiliary power output transmission according to the invention.
Drawings
In the drawings:
fig. 1 schematically shows a possible design of an auxiliary power take-off transmission according to the invention.
Identical objects, functional units and comparable components are denoted by the same reference numerals throughout the figures. These objects, functional units and comparable components are embodied in the same way in terms of their technical features, unless explicitly stated in the description or implicitly stated in the description in another form, for example.
Detailed Description
Fig. 1 schematically shows a possible design of an auxiliary power output transmission 1 according to the invention, which comprises a drive shaft 2, a driven shaft 3 and a multiple spur gear 4 formed as a double spur gear 4. According to an example, two drive idlers 5 and 6 are arranged on the drive shaft 2, which can be drivingly coupled to the drive shaft 2 or decoupled therefrom by means of a shift element 7 also arranged on the drive shaft 2. The shifting element 7 is assigned to the drive idlers 5 and 6 and, according to an example, can form three different states, namely: a state in which the drive idle gear 5 is drivingly coupled with the drive shaft 2; a state in which the drive idle gear 6 is drivingly coupled with the drive shaft 2; and an uncoupled state in which neither the drive idler 5 nor the drive idler 6 is coupled with the drive shaft 2. The shifting element 7 is here formed such that power shifting is not possible. Likewise, a main shifting element 8 is arranged on the drive shaft 2, by means of which a load flow from a drive unit (not shown in fig. 1), in accordance with the example of a combustion engine, to the drive shaft 2 can be interrupted, so that by means of the shifting element 7 the load flow can be shifted from the drive shaft 2 to the drive idler 5 or to it. If one of the two driven idler gears 5 or 6 is drivingly coupled to the drive shaft 2, a load flow to the drive shaft can be established again by the main shifting element 8. According to an example, the main shifting element 8 is formed to be power shiftable.
Two driven idle gears 9 and 10 are arranged on the output shaft 3, which can each be coupled to or decoupled from the output shaft 3 in terms of drive by means of an actuation of a shift element 11. As can be seen, the driving idler 5 is in engagement with the driven idler 9. The driving idler 6 is in engagement with the driven idler 10. The shifting elements 11 are assigned to the driven idlers 9 and 10 and are formed so as to be power-shiftable. According to an example, the shift element 11 can likewise form three different states, namely: a state in which the driven idle gear 9 is drivingly coupled to the driven shaft 3; a state in which the driven idler 10 is drivingly coupled with the driven shaft 3; and an uncoupled state in which neither driven idler 9 nor driven idler 10 is coupled with driven shaft 3. The axial end of the output shaft is formed as a flange 12 of the output shaft, by means of which flange the drive of a setting tool (not shown in fig. 1) can be realized. Only the power take-off shaft head 13 connected to the flange 12 is visible in the figure.
The double spur gear 4 is composed of two single spur gears 14' and 14 ", which according to the example are welded to each other. The single spur gear 14' is in engagement with the driven idler 10, while the single spur gear 14 "is in engagement with the driven idler 9.
The auxiliary power take-off transmission 1 shown in fig. 1 makes it possible to form a total of four torque transmission branches from the drive input shaft 2 to the output shaft 3 and thus four shiftable gear stages. The first torque transmission branch extends from the drive shaft 2 to the driven shaft 3 via the drive idler 6 and the driven idler 10. The second torque transmission branch extends from the drive shaft 2 to the driven shaft 3 via the drive idle gear 5 and the driven idle gear 9. The third torque transmission branch extends from the drive shaft 2 via the drive idler 6 and the driven idler 10 to the single spur gear 14' of the double spur gear 4. From there, the third torque transmission branch extends further to the single spur gear 14 "and finally to the driven shaft 3 via the driven idler gear 9. Finally, a third torque transmission branch extends from the drive shaft 2 via the drive idler 5 and the driven idler 9 to the single spur gear 14 "of the double spur gear 4. From there, the fourth torque transmission branch extends further to the single spur gear 14' and finally to the driven shaft 3 via the driven idler gear 10.
List of reference numerals
1 auxiliary power take-off transmission
2 drive shaft
3 driven shaft
4 multiple spur gears, double spur gears
5 drive idle wheel
6 drive idler
7 Shift element
8 Main Shift element
9 driven idler
10 driven idler
11 shift element
12 flange of driven shaft
13 power output shaft end socket
14' single spur gear
14' single spur gear

Claims (10)

1. An auxiliary power take-off transmission (1) for a motor vehicle, comprising a drive shaft (2) and a driven shaft (3), wherein a plurality of drive idlers (5, 6) and at least one shifting element (7) assigned to the plurality of drive idlers (5, 6) are arranged on the drive shaft (2), wherein by means of actuating the at least one shifting element (7) assigned to the plurality of drive idlers (5, 6) a respective individual drive idler (5, 6) can be drivingly coupled with the drive shaft (2) or drivingly decoupled from the drive shaft (2),
wherein a plurality of driven idlers (9, 10) and at least one shifting element (11) assigned to the plurality of driven idlers (9, 10) are arranged on the driven shaft (3), wherein by means of actuating the at least one shifting element (11) assigned to the plurality of driven idlers (9, 10) a respective individual driven idler (9, 10) can be drivingly coupled to the driven shaft (3) or drivingly decoupled from the driven shaft (3), and wherein a respective driving idler (5, 6) is in engagement with a respective driven idler (9, 10),
characterized in that the auxiliary power take-off transmission (1) further comprises a multi-spur gear (4) in engagement with at least two driven idler gears (9, 10).
2. The auxiliary power take-off transmission (1) according to claim 1,
characterized in that the respective drive idler (5, 6) and the single spur gear (14', 14 ") of the multiple spur gear (4) are in engagement with one common driven idler (9, 10).
3. The auxiliary power take-off transmission (1) according to claim 1,
characterized in that a main shifting element (8) for interrupting the transmission of torque to the drive shaft (2) is arranged on the drive shaft (2).
4. The auxiliary power take-off transmission (1) according to claim 1,
characterized in that the shifting elements (7) assigned to the driven idlers (5, 6) and the shifting elements (11) assigned to the driven idlers (9, 10) are each formed as sliding sleeves with sleeve carriers and/or as multi-plate clutches which can be actuated electro-hydraulically.
5. The auxiliary power output transmission (1) according to any one of claims 1 to 4,
characterized in that two drive idlers (5, 6) are arranged on the drive shaft (2); two driven idle wheels (9, 10) are arranged on the driven shaft (3); and the multiple spur gears (4) are formed as double spur gears (4).
6. The auxiliary power take-off transmission (1) according to claim 5,
characterized in that the ratio of the pitch circle diameters of the respective two drive idlers (5, 6) and driven idlers (9, 10) in engagement with each other and of the respective two driven idlers (9, 10) in engagement with each other and of the single spur gears (14', 14 ") of the double spur gear (4) is designed such that, at a standardized input rotational speed, the output rotational speed of the auxiliary power take-off transmission (1) corresponds to a standardized power take-off shaft stage.
7. The auxiliary power take-off transmission (1) according to claim 5,
characterized in that a shifting element (7) assigned to the two driven idlers (5, 6) is arranged between the two first driven idlers (5, 6) and/or a shifting element (11) assigned to the two driven idlers (9, 10) is arranged between the two driven idlers (9, 10).
8. The auxiliary power output transmission (1) according to any one of claims 1 to 4,
the end part of the driven shaft (3) is formed into a power output shaft end head (3).
9. The auxiliary power output transmission (1) according to any one of claims 1 to 4,
characterized in that the drive shaft (2) can be drivingly coupled to a drive unit of the motor vehicle such that the rotational speed of the drive shaft (2) is the same as the output rotational speed of the drive unit.
10. An agricultural work machine comprising an auxiliary power take off transmission (1) according to any one of claims 1 to 9.
CN202010468323.9A 2019-05-29 2020-05-28 Auxiliary power output transmission and agricultural working machine Pending CN112013086A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019207925.3 2019-05-29
DE102019207925.3A DE102019207925A1 (en) 2019-05-29 2019-05-29 Power take-off gear and agricultural work machine

Publications (1)

Publication Number Publication Date
CN112013086A true CN112013086A (en) 2020-12-01

Family

ID=73264551

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010468323.9A Pending CN112013086A (en) 2019-05-29 2020-05-28 Auxiliary power output transmission and agricultural working machine

Country Status (2)

Country Link
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DE (1) DE102019207925A1 (en)

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Publication number Priority date Publication date Assignee Title
WO2023046594A1 (en) * 2021-09-21 2023-03-30 Zf Friedrichshafen Ag Power take-off gear

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2853431A2 (en) * 2013-09-19 2015-04-01 CLAAS Tractor S.A.S. Power take-off shaft drive for an agricultural work machine
DE102015212047A1 (en) * 2015-04-20 2016-10-20 Zf Friedrichshafen Ag Power take-off gearbox and agricultural working machine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2853431A2 (en) * 2013-09-19 2015-04-01 CLAAS Tractor S.A.S. Power take-off shaft drive for an agricultural work machine
DE102015212047A1 (en) * 2015-04-20 2016-10-20 Zf Friedrichshafen Ag Power take-off gearbox and agricultural working machine

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