Agricultural machine and grooved shaft

Patent metadata

Field	Value
Publication number	US-10820522-B2
Application number	US-201816223239-A
Country	US
Kind code	B2
Filing date	Dec 18, 2018
Priority date	Dec 20, 2017
Publication date	Nov 3, 2020
Grant date	Nov 3, 2020

Abstract

An agricultural machine includes at least one processing device for harvested material and a drive train for the at least one processing device. The drive train has an output transmission stage with an output shaft for the at least one processing device. The output transmission stage includes an input gear and a grooved shaft connected in a non-rotatable manner to the input gear and the output shaft in such a manner that a drive connection between the input gear and the output shaft is achieved via the grooved shaft. The grooved shaft is provided with a ring groove defining a predetermined breaking point. The ring groove is configured in the drive flow direction between the input gear and the output shaft, and the grooved shaft is accessible through an assembly opening on an input gear side of the grooved shaft. The assembly opening is axially aligned with the grooved shaft.

First claim

What is claimed is:

1. An agricultural machine comprising:
at least one processing device for harvested material;
a drive train for the at least one processing device;
wherein the drive train has an output transmission stage with an output shaft for the at least one processing device;
wherein the output transmission stage comprises an input gear and a grooved shaft connected in a non-rotatable manner to the input gear and the output shaft in such a manner that a drive connection between the input gear and the output shaft is achieved via the grooved shaft; and
wherein the grooved shaft is provided with a ring groove defining a predetermined breaking point, the ring groove being configured in the drive flow direction between the input gear and the output shaft, and the grooved shaft being accessible through an assembly opening on an input gear side of the grooved shaft, the assembly opening being configured on a housing wall surrounding the drive train, and the assembly opening being axially aligned with the grooved shaft.

2. The agricultural machine according to claim 1 , wherein internal toothing is provided on the input gear and on the output shaft, wherein the internal toothing formed on the input gear is configured as continuous internal toothing, and both sets of internal toothing are axially aligned with one another, and wherein the grooved shaft connects both sets of internal toothing to one another in the drive flow direction.

3. The agricultural machine according to claim 2 , wherein the ring groove is configured between the sets of internal toothing.

4. The agricultural machine according to claim 1 , wherein a threaded bore extending in a longitudinal direction of the grooved shaft is formed in the grooved shaft.

5. The agricultural machine according to claim 4 , wherein a part of the threaded bore extending downstream of the ring groove in the drive flow direction has a smaller diameter than a part of the threaded bore extending upstream of the ring groove in the drive flow direction.

6. The agricultural machine according to claim 1 , wherein the at least one processing device is configured as one of a threshing device, a chopping device, and a cutting device.

7. A grooved shaft of an output transmission stage of a drive train for at least one processing device of harvested material in an agricultural machine, the output transmission stage having an output shaft for the at least one processing device and an input gear connected in a non-rotatable manner to the grooved shaft and the output shaft in such a manner that a drive connection between the input gear and the output shaft is achieved via the grooved shaft, the grooved shaft comprising:
a ring groove defining a predetermined breaking point, the ring groove being configured in the drive flow direction between the input gear and the output shaft;
wherein the grooved shaft is configured to be accessible through an assembly opening on an input gear side of the grooved shaft;
wherein the assembly opening is configured on a housing wall surrounding the drive train; and
wherein the grooved shaft is configured to be axially aligned with the assembly opening.

8. The grooved shaft according to claim 7 , wherein internal toothing is provided on the input gear and on the output shaft, wherein the internal toothing formed on the input gear is configured as continuous internal toothing, and both sets of internal toothing are axially aligned with one another, and wherein the grooved shaft is configured to connect both sets of internal toothing to one another in the drive flow direction.

9. The grooved shaft according to claim 8 , wherein the ring groove is configured to be disposed between the sets of internal toothing.

10. The grooved shaft according to claim 7 , further comprising:
a threaded bore extending in a longitudinal direction of the grooved shaft.

11. The grooved shaft according to claim 10 , wherein a part of the threaded bore extending downstream of the ring groove in the drive flow direction has a smaller diameter than a part of the threaded bore extending upstream of the ring groove in the drive flow direction.

12. The agricultural machine according to claim 7 , wherein the at least one processing device is configured as one of a threshing device, a chopping device, and a cutting device.

Assignees

• Deere & Co

Inventors

• Vergara Daniel

Classifications

• F16H2035/103

  with drive interruption by structural failure of overload preventing means, e.g. using shear pins · CPC title

• A01D69/06 Primary

  Gearings · CPC title

• A01D34/828

  Safety devices · CPC title

• F16C2310/00

  Agricultural machines · CPC title

• A01D41/12

  Details of combines · CPC title