DEVICE FOR SINGLE-GRAIN SOWING

• US 20180279544A1
• Filed: 09/28/2016
• Published: 10/04/2018
• Est. Priority Date: 10/06/2015
• Status: Active Grant

• Current Assignee: Kverneland Group Soest GmbH (Kubota Corporation)
• Original Assignee: Kverneland AS (Kubota Corporation)
• Inventors: Winkelmann, Michael, Grafe, Andreas
• Granted Patent: US 10,638,654 B2
• Time in Patent Office: Days
• CPC Class Codes: A01C 7/04 Single-grain seeders with or without suction devices
• CPC Class Codes: A01C 7/0445 Seed ejectors
• CPC Class Codes: A01C 7/046 with perforated seeding discs

Abstract

A single-grain sowing device comprising: a drum rotatable about an axis of rotation, a cavity formed in the drum, wherein an end face of the cavity is delimited by a sowing disc, in which multiple sowing holes are arranged on a notional circular path at a distance to each other, a body arranged in the cavity, rotatable about an axis arranged at a distance and parallel to the axis of rotation, with one part of the surface thereof resting against the sowing disc such that, when the sowing disc rotates, same temporarily seals a respective passed sowing hole on the inside, wherein the body can be rolled out on an outer casing surface surrounding the cavity, and a pressure spring, wherein the pressure spring presses the body against the casing surface.

Claims

1. A device for the scattered delivery of seeds, comprising:

a drum rotatable about an axis of rotation;

a cavity formed in the drum, wherein an end face of the cavity is delimited by a sowing disc, in which multiple sowing holes are arranged on a notional circular path at a distance from each other;

a body is arranged in the cavity, wherein the body is rotatable about an axis, which is arranged at a distance and parallel to the axis of rotation, said body including a part of its surface that rests against the sowing disc in such a way that, when the sowing disc rotates, said body temporarily seals a respective passed sowing hole on the inside, wherein the body can be rolled on an outer jacket surface, which encompasses the cavity; and

a pressure spring, wherein the pressure spring presses the body against the jacket surface.

2. The device according to claim 1, wherein the pressure spring presses the body against the jacket surface in the radial direction with respect to the axis of rotation of the drum.

3. The device according to claim 1, wherein the pressure spring is arranged on a pressure plate.

4. The device according to claim 1, wherein the pressure spring is arranged in a coulisse of an arm, on an outer end of which the body is arranged and an inner end of which is secured to a shaft, which accommodates the drum.

5. The device according to claim 4, wherein the device further comprises a pressure plate arranged in the coulisse of the arm.

6. The device according to claim 4, wherein the arm has an outer stop for limiting movement of the body.

7. The device according to claim 4, wherein the arm is a leaf spring, which is bent in the direction of the sowing disc.

8. The device according to claim 4, wherein a sliding carriage is arranged in the coulisse, on which the pressure spring presses.

9. The device according to claim 8, wherein the sliding carriage has clips for movable arrangement in the coulisse.

10. The device according to claim 8, wherein the sliding carriage has a tongue on its outer end, wherein the tongue is narrower than the inner part of the sliding carriage.

11. The device according to claim 4, wherein a pin for accommodating the body is arranged in an outer area of the coulisse.

12. The device according to claim 11, wherein the sliding carriage presses on the pin.

13. The device according to claim 11, wherein the pin can be rotated about a pendulum axis perpendicular to a radial direction (R).

14. The device according to claim 13, wherein the pin has a stop for limiting the pendulum movement.

15. The device according to claim 1, wherein the device further comprises a dust protection device that contacts a mounting of the body with an elevated outer annular surface.