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Stick for Linkage Assembly of Machine

A technology of linkage components and sticks, applied in the direction of mechanically driven excavators/dredgers, etc., can solve problems such as expensive solutions, regular inspection of early cracks, etc.

Active Publication Date: 2016-02-03
CATERPILLAR INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To reduce this stress a third member spanning between the lateral members is usually provided as an internal baffle whose internal welds can fail without warning as they cannot be regularly checked for incipient cracks
The whole nose could be one casting and the third member an integral part of that casting, but this solution would be expensive

Method used

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  • Stick for Linkage Assembly of Machine
  • Stick for Linkage Assembly of Machine
  • Stick for Linkage Assembly of Machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] The present invention generally relates to a linkage assembly for a machine configured for use with an implement system. In an embodiment, the invention relates to a load bearing member for a linkage assembly of an implement system, such as a boom and a boom or stick. The load bearing member includes a body and a joint assembly.

[0031] In an embodiment, the body includes a pair of side walls, a top and a bottom. The sidewalls are in a laterally spaced relationship to one another. The side walls each include an inner surface in facing relationship with each other and an outer surface in corresponding facing relationship with the inner surface. Each side wall defines a pivot opening therein. A top and a bottom extend between the side walls and are joined to the inner surface of each side wall by a welding operation. The sidewalls, top and bottom define a lumen.

[0032] In an embodiment, the body is substantially free of structural welds disposed within the lumen o...

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PUM

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Abstract

The invention relates to a Stick for Linkage Assembly of Machine. The stick for a linkage assembly of an implement system includes a stick body and a stick joint assembly. The stick body defines a neutral axis and includes a pair of sidewalls in lateral spaced relationship to each other, a top portion extending between the pair of sidewalls, and a bottom portion extending between the pair of sidewalls, which define an interior cavity. The stick joint assembly includes a stick joint tube and a stick joint reinforcement plate. The stick joint tube extends between and is connected to the sidewalls. The stick joint reinforcement plate is connected to one of the pair of sidewalls and includes a pair of arms extending from a central portion. The ends of the first and second arms of are disposed along the neutral axis of the stick body.

Description

technical field [0001] This patent disclosure relates generally to implement carrying linkage assemblies for machines, and more particularly to a linkage assembly including a boom and stick for use in a machine, such as an excavator. Background technique [0002] Implement bearing linkages for excavators and other similar machines may comprise a multiple load bearing structure made of multiple steel plates joined together by welding to form a box beam (also called a box section), such as the commonly known Parts for the "boom" and "stick". Box girders consist of hollow areas enclosed by steel plates. The box beam structure is subjected to significant torsional loads during the use of the machine, which can deform the box beam structure and lead to failure of the component. [0003] One solution to provide increased rigidity to torsional loaded box girder structures is to weld baffles at various locations within the box girder. However, manufacturing a box girder structure...

Claims

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Application Information

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IPC IPC(8): E02F3/38E02F3/34
CPCE02F3/32E02F3/38
Inventor W·J·乌尔里希T·因图里J·A·福尔克
Owner CATERPILLAR INC
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