Boom foot design with protruding flanges

Patent metadata

Field	Value
Publication number	US-10072392-B2
Application number	US-201615279995-A
Country	US
Kind code	B2
Filing date	Sep 29, 2016
Priority date	Sep 29, 2016
Publication date	Sep 11, 2018
Grant date	Sep 11, 2018

Abstract

A boom and boom foot section for connection to a machine, where the boom includes a center section and a box section extending between the foot and center sections. The box section includes first and second side walls. The foot section includes a machine connection for connecting the boom to the machine, and first and second protruding flanges. The first flange couples to the first side wall, and the second flange couples to the second side wall. The foot section can include a bulkhead. The machine connection, bulkhead, and flanges can be formed by a single piece of material. The flanges can be coupled to the side walls by weld joints that do not have weld roots. The flanges can extend beyond the bulkhead to allow internal welds in the weld joint. The flanges and side walls can have double-beveled edges for the weld joints formed by fused groove welds.

First claim

I claim:

1. A boom foot section for a boom having a proximal end connected to a frame of a machine and a distal end connected to an arm, the boom including the boom foot section, a boom center section, a box section and a boom nose section, where the box section extends between the boom foot section and the boom center section, and the center section extends between the box section and the boom nose section which is configured to connect to the arm, the box section including first and second side walls, the boom foot section comprising:
a machine connection configured to connect the boom to the frame of the machine;
a bulkhead;
a first protruding flange; and
a second protruding flange;
wherein the machine connection extends across the boom foot section between the first and second protruding flanges to form a proximal end of the boom foot section, the bulkhead extends across the boom foot section between the first and second protruding flanges to form a distal end of the boom foot section, and the first and second protruding flanges extend away from the machine connection beyond the bulkhead; and
wherein the machine connection, the bulkhead, and the first and second protruding flanges define an interior of a boom foot casting; and
wherein the first protruding flange is configured to be coupled to the first side wall of the box section of the boom and the second protruding flange is configured to be coupled to the second side wall of the box section of the boom.

2. The boom foot section of claim 1 , wherein the machine connection, the bulkhead, and the first and second protruding flanges are integrally cast as a single piece of material to form the boom foot casting.

3. The boom foot section of claim 2 , wherein the bulkhead includes an aperture that opens to the interior of the boom foot casting.

4. The boom foot section of claim 2 , wherein the first protruding flange is coupled to the first side wall of the box section by a first weld joint, and the second protruding flange is coupled to the second side wall of the box section by a second weld joint.

5. The boom foot section of claim 4 , wherein neither of the first weld joint or the second weld joint has a weld root.

6. The boom foot section of claim 5 , wherein a first internal weld and a first external weld are fused to form the first weld joint between the first protruding flange and the first side wall of the box section, and a second internal weld and a second external weld are fused to form the second weld joint between the second protruding flange and the second side wall of the box section.

7. The boom foot section of claim 6 , wherein the first and second protruding flanges extend beyond the bulkhead by 80 millimeters.

8. The boom foot section of claim 6 , wherein the first protruding flange has a double-beveled edge used in the first weld joint for connection to the first side wall, and the second protruding flange has a double-beveled edge used in the second weld joint for connection to the second side wall.

9. A boom that extends from a machine to an arm, the boom comprising:
a boom foot section comprising a machine connection, a bulkhead, a first protruding flange, and a second protruding flange, the machine connection being configured to connect the boom to the machine;
a boom nose section configured to connect the boom to the arm;
a boom center section positioned between the boom foot section and the boom nose section; and
a box section extending between the boom foot section and the boom center section, the box section including first and second side walls;
wherein the machine connection extends across the boom foot section between the first and second protruding flanges to form a proximal end of the boom foot section, the bulkhead extends across the boom foot section between the first and second protruding flanges to form a distal end of the boom foot section, and the first and second protruding flanges extend away from the machine connection beyond the bulkhead;
wherein the machine connection, the bulkhead, and the first and second protruding flanges define an interior of a boom foot casting; and
wherein the first protruding flange is coupled to the first side wall of the box section of the boom and the second protruding flange is coupled to the second side wall of the box section of the boom.

10. The boom of claim 9 , wherein the machine connection, the bulkhead, and the first and second protruding flanges of the boom foot section are integrally cast as a boom foot casting formed by a single piece of material.

11. The boom of claim 10 , wherein the bulkhead includes an aperture that opens to the interior of the boom foot casting.

12. The boom of claim 10 , wherein the first protruding flange is coupled to the first side wall of the box section by a first weld joint, and the second protruding flange is coupled to the second side wall of the box section by a second weld joint.

13. The boom of claim 12 , wherein neither of the first weld joint or the second weld joint has a weld root.

14. The boom of claim 13 , wherein a first internal weld and a first external weld are fused to form the first weld joint between the first protruding flange and the first side wall of the box section, and a second internal weld and a second external weld are fused to form the second weld joint between the second protruding flange and the second side wall of the box section.

15. The boom of claim 14 , wherein the first and second protruding flanges extend beyond the bulkhead by 80 millimeters.

16. The boom of claim 14 , wherein the first protruding flange has a double-beveled edge used in the first weld joint for connection to the first side wall, and the second protruding flange has a double-beveled edge used in the second weld joint for connection to the second side wall.

17. The boom of claim 16 , wherein the first side wall has a double-beveled edge used in the first weld joint, and the second side wall has a double-beveled edge used in the second weld joint; the double-beveled edges of the first side wall and the first protruding flange forming a first interior V-groove and a first exterior V-groove, the first weld joint being formed in the first interior V-groove and the first exterior V-groove, and the double-beveled edges of the second side wall and the second protruding flange forming a second interior V-groove and a second exterior V-groove, the second weld joint being formed in the second interior V-groove and the second exterior V-groove.

18. The boom of claim 17 , wherein the first weld joint comprises a first groove weld formed in the first interior V-groove and a second groove weld formed in the first exterior V-groove, the first and second groove welds being fused to form the first weld joint, and wherein the second weld joint comprises a third groove weld formed in the second interior V-groove and a fourth groove weld formed in the second exterior V-groove, the third and fourth groove welds being fused to form the second weld joint.

Assignees

• Deere & Co

Inventors

• Wittendorf Gregory

Classifications

• E02F3/38 Primary

  Cantilever beams {, i.e. booms;, e.g. manufacturing processes, forms, geometry or materials used for booms (for booms with cable suspension arrangements E02F9/14 takes precedence)}; Dipper-arms {, e.g. manufacturing processes, forms, geometry or materials used for dipper-arms}; Bucket-arms {(E02F3/34 takes precedence)} · CPC title

• E02F3/382 Primary

  Connections to the frame; Supports for booms or arms (devices to connect booms or arms to tractors or similar machines E02F3/627; pivot joint assemblies in particular E02F9/006) · CPC title

• E02F3/32

  working downwardly and towards the machine, e.g. with backhoes · CPC title