Replaceable Drive Lug for Tracked Vehicle Shoes
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Solution Overview
Problem
Tracked vehicle shoes, particularly at the drive lug and connector regions, experience high wear and maintenance requirements due to the continuous load and wear patterns, leading to frequent replacements and potential failure.
Innovation Solution
A track shoe assembly design featuring a drive lug part with protrusions and pads that can be replaced, where the drive lug part includes at least one lug portion, a supporting protrusion, and a pad portion, and is configured to be received in a drive lug cavity within the track shoe body, allowing load transfer and secure welding for enhanced durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the drive lug and pads are formed as a single part and welded to the track shoe body, then the structural strength is improved, but the drive lug assembly is still prone to failure and requires frequent replacement
Solution Approach 1:
The drive lug assembly is divided into separate components: the drive lug itself, the pads, and the supporting protrusion. This segmentation allows each component to be optimized independently and replaced separately when worn, improving reliability while maintaining structural strength through the modular construction.
Solution Approach 2:
Different regions of the drive lug assembly have different properties optimized for their specific functions. The pads provide a wear-resistant surface for ground contact, the drive lug provides the driving surface, and the supporting protrusion provides structural support. This local optimization of material properties and geometry improves overall reliability.
2Duration of action of stationary object
If the drive lug part is received in the drive lug cavity with load transfer to the track shoe body, then the durability is improved, but the device complexity increases due to multiple components
Solution Approach 1:
The drive lug part is nested within the drive lug cavity of the track shoe body, with the supporting protrusion fitting into the cavity. This nesting arrangement allows the drive lug assembly to be integrated into the track shoe body while maintaining replaceability, thus improving durability without excessive complexity.
Solution Approach 2:
The drive lug part is extracted as a separate, replaceable component from the track shoe body. This allows the wear-prone drive lug to be removed and replaced independently, extending the overall track shoe assembly life while keeping the design relatively simple through standardized interfaces.
3Force
If the drive lug part includes supporting protrusions that transfer load to the track shoe body, then the load distribution is improved, but the manufacturing complexity increases
Solution Approach 1:
The load transfer function is segmented into the supporting protrusion, which is integrated with the drive lug part. This protrusion is designed to fit into the drive lug cavity and transfer loads to the track shoe body. The segmentation allows for simplified manufacturing of each component while achieving effective load distribution.
Solution Approach 2:
The supporting protrusion is merged with the drive lug part as a single integrated component, simplifying manufacturing by reducing the number of separate parts. This integration maintains effective load transfer to the track shoe body while reducing assembly complexity compared to having separate supporting elements.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution extends the usable life of track shoe assemblies by enabling the replacement of worn drive lug parts, reducing failure rates, and distributing loads effectively across the track shoe body, thereby improving the overall durability and reducing maintenance needs.
Implementation Method 1
the at least one supporting protrusion configured to be receivable in a drive lug cavity formed in a track shoe such that a load applied to the drive lug part is at least partially transferred to the track shoe body
Data Source
AI summary
A track shoe assembly is described that comprises a drive lug part and a track shoe body including a drive lug cavity configured to receive the drive lug part. The drive lug part has at least one lug portion protruding in a first direction, and at least one supporting protrusion extending in a direction substantially opposite to the first direction. The at least one supporting protrusion is configured to be receivable in a drive lug cavity formed in a track shoe such that a load applied to the drive lug part is at least partially transferred to the track shoe.