Labyrinth-Seal Guard for Landfill Compactor Axle Protection
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Solution Overview
Problem
Existing compaction machines face downtime due to debris accumulation around axle joints, particularly 'wire-wrap' materials that can damage and impede access to axle seals and bearings, with previous barrier arrangements being only partially effective in preventing intrusion.
Innovation Solution
A labyrinth-guard assembly is created by cooperating circumferential flanges and a guard plate, forming a tortuous path that inhibits the intrusion of debris into the axle joint, comprising a wheel-flange with a rectangular cross-section connected to the inner wheel cavity and a guard-flange with a rectangular cross-section connected to the axle, forming a labyrinth-guard when connected.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a shroud with cover plate and wire trap ring is used to create a barrier against wire wrap intrusion, then axle seals and bearings are partially protected, but landfill material can still enter the wheel cavity through the radially upward and inward portions of the serpentine path
Solution Approach 1:
The barrier is divided into multiple segments: an outer shroud, an inner shroud, and a wire trap ring. These segmented components work together to create a more effective multi-layered defense against wire wrap intrusion, with each segment addressing specific pathways that the previous single-barrier design could not block
Solution Approach 2:
The invention adds an inner shroud that creates a serpentine path with multiple directional changes (radially outward, axially upward, radially inward, axially downward portions). This multi-dimensional path complexity prevents wire wrap from following a simple radial trajectory into the wheel cavity, forcing it to navigate a complicated three-dimensional route that is blocked by the segmented barrier structure
2Reliability
If a complex barrier arrangement with multiple components is implemented, then protection against wire wrap is improved, but device complexity increases
Solution Approach 1:
The outer shroud, inner shroud, and wire trap ring are merged into a single integrated barrier assembly that functions as a unified protective system. This combination creates synergistic protection where the components work together to block wire wrap pathways that would be impossible for any single component to block alone, achieving high reliability without proportionally increasing complexity
Data Source
AI summary
A labyrinth-guard arrangement for a joint between a compactor wheel and a machine that protects against intrusion of wire wrap into a central cavity of the wheel is disclosed. The labyrinth-guard is formed by a cooperation between a first flange connected to an inner cylindrical portion of the wheel, and a second flange connected to a guard plate. The first and second flanges, along with other surrounding components, cooperate to form the labyrinth-guard.