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Retainer system for ground engaging tools

A technology of ground engaging tools and retainers, which is applied in the direction of mechanically driven excavators/dredgers, construction, earth movers/shovels, etc.

Inactive Publication Date: 2017-06-23
CATERPILLAR INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Many problems and / or drawbacks still exist with these known retainer systems

Method used

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  • Retainer system for ground engaging tools
  • Retainer system for ground engaging tools
  • Retainer system for ground engaging tools

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] figure 1 An excavator bucket assembly 1 is shown as an exemplary implementation of a ground working machine. The excavator bucket assembly 1 includes a bucket 2 for excavating work material in a known manner. Bucket 2 may include various ground engaging implements. For example, the bucket 2 may include a plurality of tooth assemblies 10 attached to the bottom edge 5 of the bucket 2, the tooth assemblies 10 acting as ground engaging tools. The tooth assembly 10 may be secured to the bucket 2 using a retainer system according to the invention. Although various embodiments of the present invention will be described in conjunction with a particular ground engaging implement (eg, tooth assembly 10), it should be understood that the present invention may be applied to any other type of ground engaging implement or component or in conjunction with any other type of ground engaging implement or component. used with ground engaging tools or components. Furthermore, it should...

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PUM

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Abstract

The invention provides a retainer bushing (70) comprising a skirt (73) extending around a retainer axis (75), wherein said skirt (73) may comprise An outer surface (76) and an inner surface (74) configured to rotatably receive the outer surface (66) of the lock (60). The retainer bushing (70) may also include a detent protrusion (77) extending radially from the inner surface (74) with respect to the retainer axis (75). extending inwardly and configured to engage a detent groove (67) of the lock (60) to releasably retain the lock (60). The detent protrusion (77) may include a convex surface having a substantially constant radius (R), and the center (C) of the radius (R) of the convex surface may be positioned at a distance from the retainer axis (75) The first distance of (d 1 ), the first distance (d 1 ) is greater than the second distance (d 2 ).

Description

technical field [0001] The present invention relates generally to ground engaging tools and, more particularly, to retainer systems for removably attaching ground engaging tools to various ground working machines. Background technique [0002] Ground working machines (such as, for example, excavators, wheel loaders, hydraulic mining shovels, cable shovels, bucket wheel excavators, bulldozers, and draglines) are commonly used to dig or turn earth or rock and / or on a worksite Moving loose work material from one location to another. These ground working machines include various ground working implements, such as buckets or blades, for digging or moving work materials. These instruments can be subject to significant wear and tear due to the friction and impact experienced during ground working applications. [0003] In order to protect these implements from wear and thereby prolong the useful life of the implements, ground-working implements can be provided with a variety of g...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02F9/28E02F3/40
CPCE02F9/2841E02F9/2891
Inventor C·O·耶斯克J·R·拉胡德
Owner CATERPILLAR INC