Wearing part arrangement for plough share

• US 10,111,371 B2
• Filed: 05/22/2013
• Issued: 10/30/2018
• Est. Priority Date: 05/24/2012
• Status: Active Grant

• Current Assignee: Kverneland Group Operations Norway AS (Kubota Corporation)
• Original Assignee: Kverneland Group Operations Norway AS (Kubota Corporation)
• Inventors: Skjaeveland, Magne
• Primary Examiner(s): Will, Thomas B
• Assistant Examiner(s): Mitchell, Joel F.
• Application Number:
  US14/400,490
• Publication Number:
  US 20150129266A1
• Time in Patent Office: 1,987 Days
• Field of Search: 172719
• CPC Class Codes: A01B 15/06 Interchangeable or adjustable shares

Abstract

A wearing-part arrangement for a leading edge provided on a ploughshare of a plough body includes a plough point that is releasably attached to the plough body and provided with a pointed front portion. At least the front portion is mirror-symmetrical around a longitudinal axis of the plough point.

Claims

1. A plough comprising left- and right-facing plough bodies, each of the left- and right-facing plough bodies comprising:

a mould board;

a ploughshare that forms a leading edge of a respective one of the left- and right-facing plough bodies, the leading edge configured to lie in a working position substantially parallel to a soil surface of an area being ploughed; and

a wearing-part arrangement for the leading edge provided on the ploughshare, the wearing-part arrangement comprising a plough point configured to be releasably attached to the ploughshare, the plough point having a pointed front portion,

wherein at least the front portion is mirror-symmetrical around a longitudinal axis of the plough point and has a first oblique face and a second oblique face diverging in a direction of a socket on the plough point and merging with a first side edge surface and a second side edge surface,

wherein the first oblique face is bounded by a first cutting edge, and the second oblique face is bounded by a second cutting edge,

wherein when the plough point is attached to the ploughshare, at least a rear portion of the second oblique face and the second side edge surface adjacent to the second oblique face project beyond a ploughshare side edge, and

wherein the plough point includes a transverse elevation projecting from an upper face thereof.

2. The plough in accordance with claim 1, wherein a longitudinal axis of the first oblique face is parallel to the leading edge or a front portion of the leading edge.

3. The plough in accordance with claim 1, wherein the plough point is releasably attached to the ploughshare by a quick-release coupling device.

4. The plough in accordance with claim 1, wherein the wearing-part arrangement is replaceable.

5. The plough according to claim 1, wherein each of the left- and right-facing plough bodies further comprises a shin piece.

6. The plough in accordance with claim 1, wherein a thickness of the plough point gradually decreases towards the first cutting edge and the second cutting edge.

7. A plough comprising left- and right-facing plough bodies, each of the left- and right-facing plough bodies comprising:

a mould board;

a ploughshare that forms a leading edge of a respective one of the left- and right-facing plough bodies, the leading edge configured to lie in a working position substantially parallel to a soil surface of an area being ploughed; and

a wearing-part arrangement for the leading edge provided on the ploughshare, the wearing-part arrangement comprising

a plough point configured to be releasably attached to the ploughshare, the plough point having a pointed front portion; and

a wearing-part holder configured to be releasably attached to a sliding surface of the ploughshare, the wearing-part holder being configured to receive the plough point,

wherein at least the front portion is mirror-symmetrical around a longitudinal axis of the plough point and has a first oblique face and a second oblique face diverging in a direction of a socket on the plough point and merging with a first side edge surface and a second side edge surface,

wherein the first oblique face is bounded by a first cutting edge, and the second oblique face is bounded by a second cutting edge,

wherein when the plough point is attached to the ploughshare, at least a rear portion of the second oblique face and the second side edge surface adjacent to the second oblique face project beyond a ploughshare side edge, and

wherein the plough point includes a transverse elevation configured to shield the wearing-part holder from wear, the transverse elevation projecting from an upper face of the plough point.

8. The plough in accordance with claim 7, wherein the wearing-part holder has a curved abutment surface configured to rest against a portion of the sliding surface of the ploughshare.

9. The plough in accordance with claim 8, wherein the abutment surface is single-curved around an axis which is parallel to the longitudinal axis of the plough point.

10. The plough in accordance with claim 8, wherein the abutment surface is single-curved around an axis which is parallel to the longitudinal axis of the plough point, and has a radius that is smaller than a corresponding radius of curvature of the sliding surface of the ploughshare.

11. The plough in accordance with claim 7, wherein the wearing-part arrangement is replaceable.

12. The plough in accordance with claim 7, wherein the wearing-part holder includes an attachment pin that complements and mates with the socket of the plough point.

13. The plough in accordance with claim 12, wherein the plough point is releasably attached to the ploughshare by a quick-release coupling device comprised of the attachment pin and the socket.

14. The plough according to claim 7, wherein each of the left- and right-facing plough bodies further comprises a shin piece.

15. The plough in accordance with claim 7, wherein a thickness of the plough point gradually decreases towards the first cutting edge and the second cutting edge.