Helical Profile Mud-Packing Prevention in Rotating Assemblies
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Solution Overview
Problem
Existing rotating assemblies in track vehicles face issues with mud-packing near the seal assembly, leading to potential leaks and reduced performance due to the inability to effectively manage debris and mud displacement.
Innovation Solution
A rotating assembly featuring an annular support structure with a helical profile that pushes mud and debris away from the seal assembly, combined with a collar having grooves for traction, mitigates mud-packing and enhances seal integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a seal assembly is positioned within a seal cavity between rotating and static structures, then seal integrity is improved, but mud-packing occurs near the seal assembly leading to potential leaks
Solution Approach 1:
The harmful mud and debris are extracted from the seal cavity through the helical profile structure. The helical blades act as screw conveyors that actively remove mud-packing material from the seal area, preventing it from accumulating and compromising seal integrity.
Solution Approach 2:
The helical profile structure serves as an intermediary mechanism between the rotating structure and the seal assembly. It mediates the harmful effect of mud-packing by intercepting and transporting mud away from the seal cavity, protecting the seal from direct contamination.
2Reliability
If traditional seal protection guards are used to shield the seal assembly, then some protection is provided, but they fail to effectively prevent mud-packing and debris accumulation
Solution Approach 1:
The protection mechanism transitions from a static guard structure to a dynamic active removal system. The helical profile rotates with the rotating structure, actively conveying mud and debris away from the seal assembly, providing dynamic protection rather than passive shielding.
Solution Approach 2:
The passive mechanical guard structure is replaced with an active mechanical system using the helical screw conveyor mechanism. Instead of relying on a static barrier to block debris, the system uses rotational mechanical action to actively transport mud and debris away from the seal area.
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 effectively prevents mud-packing and promotes seal integrity by using a helical profile to displace mud and debris, reducing the likelihood of leaks and ensuring reliable operation of the track vehicle.
Implementation Method 1
The protrusion can have a helical profile which, when rotated with the annular support structure, can push mud and debris away from the seal assembly and mitigate mud-packing.
Data Source
AI summary
A rotating assembly for a machine is disclosed herein. The rotating assembly includes an annular support structure and a shaft assembly. The annular support structure includes a bore therethrough and protrusion extending helically around a portion of the bore. The shaft assembly includes a shaft and a collar coupled to the shaft. The collar includes a plurality of grooves located at the outer surface of the collar. The collar is positioned within the bore of the annular support structure such that the plurality of grooves are adjacent to the protrusion. As the annular support structure rotates, the protrusion rotates and is configured to move debris and mud out of the rotating assembly.