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Idler key for track roller assembly

An idler and flange technology, applied in the field of idler key, can solve problems such as difficult to keep in place, difficult to install spacers, and suboptimal use of spacers

Active Publication Date: 2017-07-14
CATERPILLAR INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] While the removable spacers of the idler mounting assembly disclosed in the '631 patent may allow for improved spacing between the wear parts of the assembly, the use of spacers is suboptimal
In particular, spacers can be difficult to install and hold in place as the components continue to wear and as the idlers translate longitudinally relative to the sprockets of the machine

Method used

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  • Idler key for track roller assembly
  • Idler key for track roller assembly
  • Idler key for track roller assembly

Examples

Experimental program
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Embodiment Construction

[0019] figure 1 Shown is an undercarriage 13 ( figure 1 Only one exemplary disclosed track roller assembly 12 is shown in tracked machine 10 within one undercarriage 13). According to one aspect of the invention, machine 10 is shown as a bulldozer. It should be noted, however, that one or more track roller assemblies 12 may similarly be used with other types of track machines, if desired. Machine 10 may include a machine frame 14 at least partially defining an operator station 16 and supporting a front mounted engine 18 , and a work tool 20 operatively supported by track roller assembly 12 at a front end of machine frame 14 proximate engine 18 . Engine 18 may generate a power output that may be directed through sprockets 22 and endless tracks 24 of undercarriage 13 to propel machine 10 and / or through a hydraulic circuit (not shown) to move work tool 20 . Operator station 16 may include any number and type of input devices used by an operator to control engine 18 and / or work...

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PUM

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Abstract

An idler key (56) for a track roller assembly (12) is disclosed. The idler key may have a flange portion (72) and an elongate protrusion (78) extending from the flange portion in a direction normal to the flange portion. The idler key may also have at least one shoulder disposed between the flange portion and the base of the elongated protrusion. The at least one shoulder may have at least one machined surface capable of transferring loads to a mating component.

Description

technical field [0001] The present invention relates generally to an idler key, and more particularly to an idler key for a track roller assembly. Background technique [0002] Track-type machines such as bulldozers, excavators, and skid steer loaders are often used in applications where traction is critical or low ground pressure is important. These machines consist of a frame that supports the internal combustion engine and left and right undercarriages that transmit power from the engine to the ground surface. The left and right undercarriages are rigidly mounted to the frame at one end and are free to pivot about the mounting position in the vertical direction. Each chassis includes one or more sprockets at a proximal end driven by the engine and an idler at a distal end operatively connected to a frame of the machine or to the sprockets via an idler frame assembly. The idler frame assembly includes a plurality of upper frame and lower rollers that support an endless t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B62D55/15B62D55/14B62D55/08
CPCB62D55/15
Inventor C·R·比斯利F·卡里洛J·L·纽彻莱恩A·B·拉斯
Owner CATERPILLAR INC