Power take-off transmission

Patent metadata

Field	Value
Publication number	US-10959366-B2
Application number	US-201916359438-A
Country	US
Kind code	B2
Filing date	Mar 20, 2019
Priority date	Mar 22, 2018
Publication date	Mar 30, 2021
Grant date	Mar 30, 2021

Abstract

An agricultural working machine, method, and power take-off transmission are provided. The agricultural working machine includes an internal combustion engine, at least one power take-off, and an arrangement for dynamically adjusting at least one of a speed and a torque of the PTO. The arrangement includes an electric machine and a transmission summing the driving force of the internal combustion engine and the electric machine. The transmission includes at least two gear elements that are magnetically coupled.

First claim

What is claimed is:

1. An agricultural working machine with an internal combustion engine and an auxiliary drive, the agricultural working machine comprising:
at least one power take-off;
an arrangement for dynamically adjusting at least one of a speed and a torque of the PTO;
wherein the arrangement comprises an electric machine and a transmission summing the driving force of the internal combustion engine and the electric machine;
wherein the transmission comprises at least two gear elements that are magnetically coupled; and
wherein the transmission comprises a first gear element for connecting the internal combustion engine, a second gear element for connecting the electric machine, and a third gear element for driving a power take-off shaft of the power take-off.

2. The agricultural working machine according to claim 1 , wherein the third gear element is connected to a power take-off clutch.

3. The agricultural working machine according to claim 1 , wherein the electric machine is at least partially integrated in the transmission.

4. The agricultural working machine according to claim 1 , wherein each of the first gear element, the second gear element, and the third gear element is formed as one of an internal ring, an external ring, and a central ring, and wherein the first gear element, the second gear element, and the third gear element are magnetically coupled with each another.

5. The agricultural working machine according to claim 4 , wherein the electric machine is arranged directly around the external ring.

6. The agricultural working machine according to claim 4 , wherein at least one of the first gear element, the second gear element, and the third gear element is an external ring having magnetic elements.

7. The agricultural working machine according to claim 4 , wherein at least one of the first gear element, the second gear element, and the third gear element is an external ring generating a magnetic field with coils.

8. The agricultural working machine according to claim 1 , wherein the arrangement has a braking device for the power take-off.

9. The agricultural working machine according to claim 1 , wherein the arrangement comprises a generator that generates energy to operate the electric machine and directs the energy to the electric machine without interim storage.

10. The agricultural working machine according to claim 1 , wherein the working machine has a device configured to control a dynamic adaptation of the speed and the torque of a power take-off shaft of the power take-off.

11. The agricultural working machine according to claim 1 , wherein the electric machine is configured to operate as a generator and as an engine.

12. A method of operating a magnetic transmission with a power take-off transmission, the method comprising:
dynamically adjusting a speed and a torque of a power take-off shaft in an agricultural machine, wherein the power take-off transmission comprises at least two transmission elements magnetically coupled to each other; and
wherein the power take-off transmission sums the driving force of an internal combustion engine and an electric machine; and
wherein the power take-off transmission comprises a first gear element for connecting the internal combustion engine, a second gear element for connecting the electric machine, and a third gear element for driving the power take-off shaft.

13. A power take-off transmission for transmitting drive torque to a power take-off, the power take-off transmission comprising:
an arrangement for dynamically adjusting at least one of a speed and a torque of the power take-off with an electric machine configured to be connected to an electrical network; and
at least three transmission elements, wherein one of the at least three transmission elements is configured to be connected to an internal combustion engine and another of the at least three transmission elements is connected to the electric machine and another of the at least three transmission elements is connected to a power take-off shaft of the power take-off such that a third transmission stage sums initiated torque of the internal combustion engine and the electric machine, wherein at least two of the at least three transmission elements are magnetically coupled to each other.

Assignees

• Deere & Co

Inventors

• Lang Matthias
• Gugel Rainer
• Mueller David

Classifications

• B60Y2200/221

  Tractors · CPC title

• B60Y2410/132

  Magnetic, e.g. permanent magnets · CPC title

• B60K17/28 Primary

  characterised by arrangement, location, or type of power take-off · CPC title

• B60W20/10

  Controlling the power contribution of each of the prime movers to meet required power demand · CPC title

• B60Y2300/1888

  Control of power take off [PTO] · CPC title