Gapped Tooth Master Track Link for Undercarriage Durability
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Solution Overview
Problem
Current master track link designs are not durable enough, leading to unintentional disassembly and track chain separation, resulting in unwanted downtime and maintenance costs, as the teeth of one master track link do not consistently mate with those of another, causing the track chain to fall off the undercarriage.
Innovation Solution
A pair of master track links with a unique tooth configuration, where the front tooth is spaced differently from intermediate teeth and the rear tooth is unsupported adjacent a void on the mating link, ensuring secure engagement and load distribution across multiple teeth, reducing the likelihood of disassembly and enhancing durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the teeth of master track links are designed to mate closely (as in prior art with five teeth), then the initial engagement appears secure, but the teeth do not remain engaged over time, leading to unintentional disassembly and track chain separation
Solution Approach 1:
The tooth interface is segmented into multiple discrete contact points (front tooth, intermediate teeth, rear tooth) rather than relying on a single continuous contact. This segmentation allows each tooth element to contribute to load distribution and engagement stability, preventing the complete disengagement that occurs in prior art when the single contact point fails
Solution Approach 2:
Different regions of the tooth interface have different properties: the front tooth provides initial engagement, intermediate teeth provide load distribution, and the rear tooth provides final securing. Each region is optimized for its specific function, creating a gradient of engagement quality that enhances overall reliability
2Reliability
If the master track link uses a simple tooth design (as in prior art), then manufacturing is cost-effective, but the teeth do not durably mate, causing track chain failure and downtime
Solution Approach 1:
The tooth configuration is designed to preliminarily distribute loads across multiple teeth before complete engagement occurs. This preliminary load distribution prevents stress concentration on single teeth, reducing wear and failure rates without requiring complex manufacturing processes
Solution Approach 2:
The invention changes the geometric parameters of the tooth interface by introducing intermediate teeth at specific positions with specific spacing. These parameter changes create a more durable engagement pattern while maintaining compatibility with standard manufacturing processes
3Reliability
If the master track link uses a complex tooth configuration to improve durability, then engagement reliability improves, but serviceability and ease of disassembly may be compromised
Solution Approach 1:
The tooth engagement system is designed to be dynamically responsive to applied loads. Under normal operating conditions, multiple teeth engage to provide secure connection. During disassembly, the application of force in the opposite direction allows the teeth to disengage sequentially, maintaining ease of serviceability
Data Source
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AI summary
A track chain assembly (112) comprises a plurality of track links (116) connected to each other by either a track pin (126) or a track bushing (124), a first master track link (202, 302) including a first interface region (220, 320) including a plurality of teeth (222, 224, 226, 322, 324, 326), a second master track link (202', 302') including a second interface region (246, 346) including a plurality of teeth (248, 250, 252, 348, 350, 352), and the first interface region (220, 320) and the second interface region (246, 346) are configured such that the plurality of teeth (222, 224, 226, 322, 324, 326, 248, 250, 252, 348, 350, 352) of both the first master track link (202, 302) and second master track link (202', 302') are configured to share substantially the same load when the track chain assembly (112) is in use.