Round baler with apparatus for guiding a pressing belt

Patent metadata

Field	Value
Publication number	US-9936644-B2
Application number	US-201615182263-A
Country	US
Kind code	B2
Filing date	Jun 14, 2016
Priority date	Jun 16, 2015
Publication date	Apr 10, 2018
Grant date	Apr 10, 2018

Abstract

A round baler is provided with a bale-forming chamber that is surrounded by a pressing apparatus in the form of a single pressing belt or several pressing belts arranged one next to the other, wherein the pressing apparatus contacts a roller that can be driven and freely co-rotating rollers, of which at least one pre-tensioned roller is loaded by pre-tensioning apparatus in the sense of tightening the pressing apparatus such that it pre-tensions the pre-tensioned roller more strongly the farther this roller moves in a direction for loosening the pressing apparatus. The two ends of the pre-tensioned roller are each pre-tensioned by the pre-tensioning apparatus and can move independently of each other.

First claim

The invention claimed is:

1. A round baler comprising:
a frame;
a bale-forming chamber that is surrounded by a pressing apparatus in the form of a single pressing belt or multiple pressing belts arranged one next to the other, wherein the pressing apparatus contacts multiple rollers that can be driven and freely co-rotating rollers, of which at least one pre-tensioned roller having a first end and a second end is loaded by pre-tensioning apparatus connected to the first and second ends, such that the pre-tensioning apparatus pre-tensions the first end of the pre-tensioned roller greater than the second end of the pre-tensioned roller when the first end moves more than the second end in a direction leading to the loosening of the pressing apparatus; and
wherein each of a plurality of positions of the ends of the pre-tensioned roller is configured to be detected by sensors that are connected to a display device, the sensors are rotational angle sensors.

2. The round baler of claim 1 , wherein the pre-tensioning apparatus comprises a first spring coupled to the first end of the pre-tensioned roller and a second spring coupled to the second end of the pre-tensioned roller, when the first end moves more than the second end, the first spring deforms more than the second spring.

3. The round baler of claim 1 , wherein the pre-tensioned roller is mounted on two ends on a holder that is hinged so that it can pivot on the frame of the round baler and is coupled with the pre-tensioning apparatus.

4. The round baler of claim 2 , wherein when the pressing apparatus moves toward the first end which has a greater amount of force from the pressing apparatus than the second end, the pre-tensioning apparatus pulls the pressing apparatus back toward the second end.

5. A round baler comprising:
a frame;
a bale-forming chamber that is surrounded by a pressing apparatus in the form of a single pressing belt or multiple pressing belts arranged one next to the other, wherein the pressing apparatus contacts multiple rollers that can be driven and freely co-rotating rollers, of which at least one pre-tensioned roller is loaded by two springs with each of two ends of the at least one pre-tensioned roller being coupled to one of the two springs;
wherein in a balanced condition, the two ends of the at least one pre-tensioned roller bear substantially equal amount of forces from the pressing belts;
wherein in a unbalanced condition, the two ends of the at least one pre-tensioned roller bear different amount of forces, and then the springs are deformed and lead the pre-tensioned roller back the balanced condition; and
wherein each of a plurality of positions of the ends of the pre-tensioned roller is configured to be detected by sensors that are connected to a display device, the sensors are rotational angle sensors.

6. The round baler of claim 5 , wherein in the balanced conditioned, the pressing apparatus is substantially symmetric to the pre-tensioned roller.

7. The round baler of claim 5 , wherein in the unbalanced condition, the pressing apparatus moves towards one of the two ends of pre-tensioned roller which has a greater amount of force from the pressing apparatus than the other end.

8. The round baler of claim 5 , wherein the pressing apparatus is endless and formed an enclosure area subject to be changed when baling, and the pre-tensioned roller is within the enclosure area.

9. The round baler of claim 8 , wherein one of the multiple rollers is positioned immediately before the pre-tensioned roller and another one of the multiple rollers is positioned immediately after the pre-tensioned roller and these two of the multiple rollers are outside the enclosure area.

10. The round baler of claim 9 , wherein the two of the multiple rollers are coupled to a carrier configured to pivot about an axis on the frame.

11. The round baler of claim 10 , wherein the carrier is coupled rigidly with an arm that is pre-tensioned by a hydraulic cylinder.

12. The round baler of claim 1 , wherein the pressing apparatus is endless and formed an enclosure area subject to be changed when baling, and the pre-tensioned roller is within the enclosure area.

13. The round baler of claim 12 , wherein one of the multiple rollers is positioned immediately before the pre-tensioned roller and another one of the multiple rollers is positioned immediately after the pre-tensioned roller and these two of the multiple rollers are outside the enclosure area.

14. The round baler of claim 13 , wherein the two of the multiple rollers are coupled to a carrier configured to pivot about an axis on the frame.

15. The round baler of claim 14 , wherein the carrier is coupled rigidly with an arm that is pre-tensioned by a hydraulic cylinder.

16. A round baler comprising:
a frame;
a bale-forming chamber that is surrounded by a pressing apparatus in the form of a single pressing belt or multiple pressing belts arranged one next to the other, wherein the pressing apparatus contacts multiple rollers that can be driven and freely co-rotating rollers, of which at least one pre-tensioned roller having a first end and a second end is loaded by pre-tensioning apparatus connected to the first and second ends, such that the pre-tensioning apparatus pre-tensions the first end of the pre-tensioned roller greater than the second end of the pre-tensioned roller when the first end moves more than the second end in a direction leading to the loosening of the pressing apparatus;
wherein the pressing apparatus is endless and formed an enclosure area subject to be changed when baling, and the pre-tensioned roller is within the enclosure area; and
wherein one of the multiple rollers is positioned immediately before the pre-tensioned roller and another one of the multiple rollers is positioned immediately after the pre-tensioned roller and these two of the multiple rollers are outside the enclosure area.

17. The round baler of claim 16 , wherein the pre-tensioning apparatus comprises a first spring coupled to the first end of the pre-tensioned roller and a second spring coupled to the second end of the pre-tensioned roller, when the first end moves more than the second end, the first spring deforms more than the second spring.

18. The round baler of claim 16 , wherein the pre-tensioned roller is mounted on two ends on a holder that is hinged so that it can pivot on the frame of the round baler and is coupled with the pre-tensioning apparatus.

19. The round baler of claim 16 , wherein the positions of the ends of the pre-tensioned roller can each be detected by sensors that are connected to a display device, the sensors are rotational angle sensors.

20. The round baler of claim 17 , wherein when the pressing apparatus moves toward the first end which has a greater amount of force from the pressing apparatus than the second end, the pre-tensioning apparatus pulls the pressing apparatus back toward the second end.

21. The round baler of claim 16 , wherein the two of the multiple rollers are coupled to a carrier configured to pivot about an axis on the frame.

22. The round baler of claim 21 , wherein the carrier is coupled rigidly with an arm that is pre-tensioned by a hydraulic cylinder.

23. A round baler comprising:
a frame;
a bale-forming chamber that is surrounded by a pressing apparatus in the form of a single pressing belt or multiple pressing belts arranged one next to the other, wherein the pressing apparatus contacts multiple rollers that can

Assignees

• Deere & Co

Inventors

• Pourchet Jeremy
• Marques Manuel

Classifications

• A01F2015/077

  Pressing chamber formed by belts and rollers · CPC title

• A01F15/18 Primary

  Endless belts, rolls or the like · CPC title

• A01F2015/186

  Constructional details of rollers or the bearings of the rollers of the press chamber · CPC title

• A01F15/07

  Rotobalers, i.e. machines for forming cylindrical bales by winding and pressing · CPC title

• A01F15/0833 Primary

  for round balers · CPC title