Retention system for a wear member

Patent metadata

Field	Value
Publication number	US-9574330-B2
Application number	US-201514818380-A
Country	US
Kind code	B2
Filing date	Aug 5, 2015
Priority date	Aug 8, 2014
Publication date	Feb 21, 2017
Grant date	Feb 21, 2017

Abstract

A retention system for a wear member may have a flange having a mounting slot defined between a first inner wall and a second inner wall, which are parallel to an axis. The retention system may also have a first retention member having a first through hole, and a second retention member having a second through hole. The retention system may additionally have a fastener configured to be received in the first and second through holes. The fastener may be configured to move the first retention member and the second retention member in opposite directions along the axis. The retention system may be configured such that movement of the retention members along the axis exerts forces on the first and second inner walls perpendicular to the axis.

First claim

What is claimed is:

1. A retention system for a wear member, comprising:
a flange configured to be attached to the wear member, the flange including a recessed mounting slot defined between a first inner wall and a second inner wall which are parallel to an axis;
a first retention member including a first surface and a first through hole;
a second retention member including a second surface and a second through hole; and
a fastener including a first section configured to be received in the first through hole and a second section configured to be received in the second through hole, and configured to move the first retention member and the second retention member in opposite directions along the axis,
wherein the retention system is configured such that movement of the first retention member and the second retention member in opposite directions along the axis causes the first surface and the second surface to exert a retaining force on the first inner wall in a direction perpendicular to the axis; and
wherein the first through hole and the first section each include first threads that matingly engage each other,
the second through hole and the second section each include second threads that matingly engage each other, and
the first threads are threaded in a different direction than the second threads.

2. The retention system of claim 1 , wherein the first retention member includes a third surface, wherein the third surface forms a first angle with respect to an axis of the first through hole and is configured to engage a mounting boss attached to the work tool.

3. The retention system of claim 2 , wherein the second retention member includes a fourth surface, wherein the fourth surface forms a second angle with respect to an axis of the second through hole, and is configured to engage the mounting boss.

4. The retention system of claim 2 , wherein the third surface forms a second angle with respect to an axis perpendicular to the axis of the first through hole.

5. The retention system of claim 1 , further including a mounting boss configured to be attached to the work tool, the mounting boss including a third surface, and wherein the retention system is configured such that the movement of the first retention member and the second retention member in opposite directions along the axis causes the third surface to exert a retaining force on the second inner wall in an opposite direction perpendicular to the axis.

6. The retention system of claim 5 , wherein the mounting boss includes a fourth surface, wherein the fourth surface forms a first angle with respect to the third surface, and is configured to engage the first retention member.

7. The retention system of claim 6 , wherein the fourth surface forms a second angle with respect to an axis perpendicular to the first surface.

8. The retention system of claim 1 , wherein at least one of the first inner wall and the second inner wall includes a surface that forms an angle with respect to the direction perpendicular to the axis.

9. A wear member assembly for a work tool, comprising:
a wear member including:
a protecting portion configured to protect an edge of the work tool, and
a mounting portion configured to secure the wear member to a surface of the work tool, the mounting portion including a mounting slot defined between a first inner wall and a second inner wall which are parallel to an axis; and

a retention mechanism configured to secure the mounting portion to the surface of the work tool, the retention mechanism including:
a retention member including a first surface and a first through hole; and
a fastener including a first section configured to be received in the first through hole wherein the fastener includes a plurality of snap grooves configured to receive a snap ring, wherein the retention mechanism is configured such that movement of the first retention member along the axis causes the first surface to exert a retaining force on the first inner wall in a direction perpendicular to the axis.

10. The wear member of claim 9 , wherein the protecting portion includes a receiving slot configured to receive the edge of the work tool.

11. The wear member of claim 10 , wherein the retention mechanism is configured such that movement of the first retention member along the axis causes the receiving slot to move in the direction perpendicular to the axis.

12. The wear member of claim 10 , wherein the retention mechanism is configured to secure the mounting portion to the surface with the receiving slot and the fastener positioned parallel to the axis.

13. The wear member of claim 10 , wherein the mounting slot is formed as a recess on an inner surface of the mounting portion.

14. The wear member of claim 10 , further including a second mounting slot extending perpendicular to the mounting slot between the first inner wall and an end of the mounting portion.

15. The wear member of claim 10 , wherein:
the retention mechanism includes a second retention member including a second surface and a second through hole,
the fastener includes a second section configured to be received in the second through hole, and is configured to move the first retention member and the second retention member in opposite directions along the axis, and
the retention mechanism is configured such that the movement of the first retention member and the second retention member in opposite directions along the axis causes the second surface to exert a retaining force on the first inner wall.

16. The wear member of claim 15 , wherein:
the retention mechanism includes a mounting boss including a third surface, and
the retention mechanism is configured such that the movement of the first retention member and the second retention member in opposite directions along the axis causes the third surface to exert a retaining force on the second inner wall.

17. A work tool assembly, comprising:
a work tool including a side surface that extends to a side edge and a mounting boss secured to the side surface, the mounting boss including a first surface;
a wear member configured to be installed on the work tool, the wear member including:
a protecting portion configured to protect the edge of the work tool, and
a mounting portion configured to secure the wear member to the side surface of the work tool, the mounting portion including a recessed mounting slot defined between a first inner wall and a second inner wall which are parallel to an axis; and

a retention mechanism configured to secure the mounting portion to the side surface of the work tool, the retention mechanism including:
a first retention member including a second surface and a first through hole;
a second retention member including a third surface and a second through hole; and
a fastener including a first section configured to be received in the first through hole and a second section configured to be received in the second through hole, and configured to move the first retention member and the second retention member in opposite directions along the axis wherein the first section includes a first diameter and the second section includes a second diameter, and the first diameter is different than the second diameter,

wherein the retention mechanism is configured such that movement of the first retention member and the second retention member in opposite directions along the axis causes the second surface and the third surface to exert a retaining force on the first inner wall in a direction perpendicular to the axis, and the first surface to exert a retaining force on th

Assignees

• Caterpillar Inc

Inventors

• Plouzek John Michael

Classifications

• E02F9/2883 Primary

  Wear elements for buckets or implements in general · CPC title

• E02F9/2816

  Mountings therefor · CPC title