Axle Seal Shield for Compaction Machine Debris Protection
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Solution Overview
Problem
Compaction machines, such as landfill compactors, face issues with debris entering the internal cavity of the wheel and compromising the axle seal, leading to potential damage and the need for immediate repair, which disrupts machine operation.
Innovation Solution
A shield assembly is integrated into the axle assembly, comprising a shield body that extends over the gap between the spindle and final drive, positioned above the spindle and final drive within the cavity of the ground engaging device, made from steel plate or castings, guiding debris away from the annular gap using a peaked roof configuration and flanges to prevent ingress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the machine operates on debris-covered terrain, then productivity is improved, but debris enters the seal cavity compromising seal integrity
Solution Approach 1:
A shield assembly is introduced as an intermediary component between the debris environment and the seal cavity. The shield includes a shield body with a peaked roof configuration and flanges that create a protective barrier, directing debris away from the seal area while allowing the machine to continue operating on debris-covered terrain
2Reliability
If the seal is compromised by debris, then repair is required, but machine downtime increases
Solution Approach 1:
The shield assembly performs preliminary protective action by preventing debris from reaching the seal in the first place. The peaked roof configuration and flanges create a debris-trapping zone that stops debris before it can compromise the seal, eliminating the need for repairs and associated downtime
3Reliability
If the shield body extends over the gap, then debris is directed away from the seal, but the structure becomes more complex
Solution Approach 1:
The shield assembly is segmented into distinct functional components: a shield body with peaked roof configuration for debris deflection, flanges for structural support and positioning, and a debris-trapping zone. This segmentation allows each component to perform its specific function efficiently while maintaining overall structural integrity
Data Source
AI summary
A shield assembly is provided for an axle assembly of a machine. The machine includes a ground engaging device including a hub. The hub defines a cavity and an inboard opening to the cavity. The axle assembly includes a spindle, a final drive rotatably coupled to the spindle, and a gap disposed between the spindle and the final drive. The shield assembly has a shield body coupled to the axle assembly and disposed within the cavity of the ground engaging device. The shield body is located above portions of the spindle and the final drive, and extends over the gap.