OPENER DISK BLADE SCRAPER HINGE GEOMETRY TO MAINTAIN CONTACT WITH DEFLECTED DISK BLADE

• US 20090255697A1
• Filed: 03/17/2009
• Published: 10/15/2009
• Est. Priority Date: 04/10/2008
• Status: Active Grant

• Current Assignee: Deere & Company
• Original Assignee: Deere & Company
• Inventors: Friestad, Michael E.
• Granted Patent: US 8,196,671 B2
• Time in Patent Office: Days
• US Class Current: 172/560
• CPC Class Codes: A01B 23/06 Discs A01B15/16 takes precedence; bearings therefor A01B71/04; Scrapers for cleaning discs; Sharpening attachments; Lubrication of bearingssharpening in general B24
• CPC Class Codes: A01C 5/064 with rotating tools

Abstract

An agricultural machine includes a disk blade assembly having a hub and a disk blade mounted to the hub. The hub has a perimeter. The disk blade is deflectable by ground forces in an area outside of the hub. A scraper assembly includes a mount, a scraper blade, and a hinge pivotally interconnecting the scraper blade with the mount. The hinge has an axis of rotation which passes through a point generally at or near a bottom of the hub perimeter, and generally coincident with the disk blade.

Claims

1. An agricultural machine, comprising:

a disk blade assembly including a hub and a disk blade mounted to said hub, said hub having a perimeter; and

a scraper assembly including;

a mount;

a scraper blade; and

a hinge pivotally interconnecting said scraper blade with said mount, said hinge having an axis of rotation which lies generally tangent to said perimeter of said disk blade hub.

2. The agricultural machine of claim 1, wherein said hub has an axis of rotation, and said hinge axis of rotation generally intersects with a substantially vertical line passing through said hub axis of rotation.

3. The agricultural machine of claim 2, wherein said substantially vertical line is generally coincident with said disk blade at an intersection point.

4. The agricultural machine of claim 1, wherein said axis of rotation passes through an intersection point generally at or near a bottom of said hub perimeter.

5. The agricultural machine of claim 4, wherein said disk blade is substantially not deflectable by ground forces in an area of said hub, and said disk blade is deflectable by ground forces in an area below said hub.

6. The agricultural machine of claim 1, wherein said agricultural machine is one of a seeding machine and a chemical applicator.

7. An agricultural machine, comprising:

a disk blade assembly including a hub and a disk blade mounted to said hub, said hub having an axis of rotation and a perimeter; and

a scraper assembly including;

a mount;

a scraper blade; and

a hinge pivotally interconnecting said scraper blade with said mount, said hinge axis of rotation generally intersecting with a substantially vertical line passing through said hub axis of rotation and coincident with said disk blade at an intersection point.

8. The agricultural machine of claim 7, wherein said hinge axis of rotation passes through an intersection point generally at or near a bottom of said hub perimeter.

9. The agricultural machine of claim 8, wherein said disk blade is substantially not deflectable by ground forces in an area of said hub, and said disk blade is deflectable by ground forces in an area below said hub.

10. The agricultural machine of claim 7, wherein said agricultural machine is one of a seeding machine and a chemical applicator.

11. An agricultural machine, comprising:

a disk blade assembly including a hub and a disk blade mounted to said hub, said hub having a perimeter, said disk blade being deflectable by ground forces in an area outside of said hub; and

a scraper assembly including;

a mount;

a scraper blade; and

a hinge pivotally interconnecting said scraper blade with said mount, said hinge having an axis of rotation which passes through a point generally at or near a bottom of said hub perimeter, and generally coincident with said disk blade.

12. The agricultural machine of claim 11, wherein said hub has an axis of rotation, and said hinge axis of rotation generally intersects with a substantially vertical line passing through said hub axis of rotation.

13. The agricultural machine of claim 12, wherein said substantially vertical line is generally coincident with said disk blade at an intersection point.

14. The agricultural machine of claim 11, wherein said disk blade is substantially not deflectable by ground forces in an area of said hub, and said disk blade is deflectable by ground forces in an area below said hub.

15. The agricultural machine of claim 11, wherein said agricultural machine is one of a seeding machine and a chemical applicator.