Wear assembly for use on earth working equipment

Patent metadata

Field	Value
Publication number	US-9816254-B2
Application number	US-201514640999-A
Country	US
Kind code	B2
Filing date	Mar 6, 2015
Priority date	Mar 30, 2006
Publication date	Nov 14, 2017
Grant date	Nov 14, 2017

Abstract

A wear assembly for excavating equipment which includes a wear member and a base each with upper and lower stabilizing surfaces that are offset and at overlapping depths to reduce the overall depth of the assembly while maintaining high strength and a stable coupling. The nose and socket each includes a generally triangular-shaped front stabilizing end to provide a highly stable front connection between the nose and wear member for both vertical and side loading. The lock is movable between hold and release positions to accommodate replacing of the wear member when needed, and secured to the wear member for shipping and storage purposes.

First claim

The invention claimed is:

1. A wear assembly for excavating equipment comprising:
a wear member including an exterior surface, a front end facing generally in the direction of travel during excavating, a rear mounting end including a cavity having opposing upper and lower walls and a front wall extending between the upper and lower walls, the cavity opening rearward to receive a base of the excavating equipment between the upper and lower walls for supporting the wear member on the excavating equipment, and a through-hole extending from the exterior surface to the cavity; and
a lock including a body and a resilient member secured together for installation as a unit into the through-hole of the wear member, the lock being adjustable between a hold position where the body is positioned to interact with the base in the hold position when the wear member is installed and hold the wear member on the excavating equipment, and a release position where the body is positioned to permit installation of the wear member onto the base, wherein the resilient member resists adjustment of the lock between the hold position and the release position, and wherein the lock is secured to the wear member in both the hold position and the release position irrespective of the insertion of the base into the cavity or the orientation of the wear member to form a single integral component with less risk the lock will be separated from the wear member and lost.

2. A wear assembly in accordance with claim 1 wherein the body is free of threads to effect adjustment of the lock between the hold position and the release position.

3. A wear assembly in accordance with claim 2 wherein the lock includes a tool-receiving formation operable to adjust the lock between the hold position and the release position without a hammer.

4. A wear assembly in accordance with claim 3 wherein the body turns less than a full rotation about an axis between the hold and release positions.

5. A wear assembly in accordance with claim 4 wherein the lock includes a latch operable to retain the lock in each of the hold and release positions with both said positions being at pre-established locations.

6. A wear assembly in accordance with claim 5 wherein the cavity has sidewalls extending between the upper and lower walls, and the through-hole opens in one of the sidewalls.

7. A wear assembly in accordance with claim 6 wherein the wear member includes a bulb and the lock includes a recess to receive the bulb to define the axis.

8. A wear assembly in accordance with claim 7 wherein the lock includes a shield to contact the bulb, and the resilient member is positioned between the body and the shield.

9. A wear assembly in accordance with claim 1 wherein the lock includes a tool-receiving formation operable to adjust the lock between the hold position and the release position without a hammer.

10. A wear assembly in accordance with claim 9 wherein the lock includes a latch operable to retain the lock in each of the hold and release positions with both said positions being at pre-established locations.

11. A wear assembly in accordance with claim 10 wherein the lock is free of threads to effect adjustment between the hold position and the release position.

12. A wear assembly in accordance with claim 11 wherein the cavity has sidewalls extending between the upper and lower walls, and the through-hole opens in one of the said sidewalls.

13. A wear assembly in accordance with claim 1 wherein the lock includes a latch operable to retain the lock in each of the hold and release positions with both said positions being at pre-established locations.

14. A wear assembly in accordance with claim 13 wherein the lock is free of threads to effect adjustment between the hold position and the release position.

15. A wear assembly in accordance with claim 1 wherein the cavity has sidewalls extending between the upper and lower walls, and the through-hole opens in one of the said sidewalls.

16. A wear assembly in accordance with claim 1 wherein the body turns less than a full rotation about an axis between the hold and release positions.

17. A wear assembly in accordance with claim 16 wherein the axis extends generally in the same direction the base is received into the cavity.

18. A wear assembly in accordance with claim 1 wherein the cavity is enclosed on all sides other than rearward.

19. A wear assembly in accordance with claim 1 wherein the wear member and the lock include a pivot members that engage each other such that the lock pivots between the hold and release positions.

20. A wear assembly in accordance with claim 19 wherein the pivot member of the wear member includes a bulb, the pivot member of the lock includes a recess to receive the bulb, the lock includes a shield to contact the bulb, and the resilient member is positioned between the body and the shield.

21. A wear assembly in accordance with claim 1 wherein the lock is secured to the wear member for shipping and storage as a single integral component.

22. A wear assembly in accordance with claim 1 wherein the lock is secured to the wear member such that they are maintained as a single integral component through shipping, storage, installation and use.

23. A wear assembly in accordance with claim 1 wherein the wear member is a point with a front digging edge.

24. A wear assembly for attachment to excavating equipment comprising:
a wear member including a front end, a rear end, a cavity that opens in the rear end to receive a base fixed to the excavating equipment, and a through-hole in communication with the cavity; and
a body and a resilient member coupled together and in the through-hole;
the body being adjustable to (i) contact the base received in the cavity and prevent removal of the wear member from the base and (ii) release the base to permit the wear member to be installed on and removed from the base, the adjustment of the body being free of threads and without a hammer; and
the body and the resilient member being retained with the wear member regardless of the receipt of the base in the cavity or the orientation of the wear member when adjusted to where the body could contact the base and where the body permits the wear member to be installed on and removed from the base.

25. A wear assembly in accordance with claim 24 wherein the cavity includes opposing upper and lower walls and a front wall extending between the upper and lower walls.

26. A wear assembly in accordance with claim 25 wherein the cavity includes opposing sidewalls extending between the upper and lower walls.

27. A wear assembly in accordance with claim 26 wherein the through-hole extends through one of the sidewalls.

28. A wear assembly in accordance with claim 25 wherein the body includes a latch formation that releasably holds the body to the wear member when in contact with the base and when releasing the base.

29. A wear assembly in accordance with claim 25 wherein the resilient member flexes when the body is adjusted between contacting the base and releasing the base.

30. A wear assembly in accordance with claim 24 wherein the body includes a latch formation that releasably holds the body to the wear member when in contact with the base and when releasing the base.

31. A wear assembly in accordance with c

Assignees

• Esco Corp

Inventors

• Carpenter Christopher M
• Conklin Donald M
• Bearden James E
• Durand Severn D
• Radzius Dziugas

Classifications

• E02F9/28 Primary

  Small metalwork for digging elements, e.g. teeth {scraper bits (ploughs for agriculture A01B15/00; teeth of harrows A01B23/02)} · CPC title

• E02F9/2833 Primary

  Retaining means, e.g. pins · CPC title

• Y10T29/49826

  Assembling or joining · CPC title

• E02F9/2808

  Teeth · CPC title

• E02F9/2866

  for rotating digging elements (for milling machines B28D1/186; for mining machines E21C35/18) · CPC title