Thermally Shielded Lubricating Oil Cap Assembly
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Solution Overview
Problem
Tracked vehicle rollers experience excessive frictional heat due to high weight, leading to roller failure and costly repairs, and existing transparent plastic caps for lubricating oil reservoirs often soften and leak due to heat, necessitating frequent replacements.
Innovation Solution
A lubricating oil maintenance cap assembly featuring a cap made of a first plastic material and a thermally resistant shield made of a second plastic material, where the shield is anchored to the cap using counterpins and countersinks, providing thermal insulation and preventing oil leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If transparent plastic caps are used for lubricating oil reservoirs, then visual inspection of oil level and quality is enabled, but the caps soften and leak due to heat from tracked vehicle rollers
Solution Approach 1:
The cap assembly is divided into two distinct components: a transparent plastic cap for visual inspection and a separate heat-resistant shield for thermal protection. This segmentation allows each component to fulfill its specific function without compromising the other.
Solution Approach 2:
The heat-resistant shield acts as an intermediary element positioned between the heat source (roller) and the transparent plastic cap. It blocks thermal energy from reaching the cap, preventing softening and leakage while preserving the cap's transparency for visual inspection.
2Reliability
If heat-resistant materials are used for caps, then thermal resistance is improved, but visual inspection capability is lost
Solution Approach 1:
The protective function and inspection function are separated into different components: the heat-resistant shield provides thermal protection while the transparent plastic cap maintains visual inspection capability. Neither component needs to possess both properties simultaneously.
Solution Approach 2:
Different parts of the cap assembly have different material properties tailored to their specific functions. The shield portion uses heat-resistant material for thermal protection, while the cap portion uses transparent material for visual inspection. Each local region has the quality it needs for its purpose.
3Ease of operation
If transparent plastic caps are used, then ease of visual inspection is improved, but cap lifespan is reduced due to frequent softening and leakage
Solution Approach 1:
The heat-resistant shield is installed in advance to protect the transparent plastic cap from thermal damage before softening and leakage can occur. This preventive measure extends the operational lifespan of the cap by shielding it from heat exposure during normal operation.
Solution Approach 2:
The shield serves as a protective intermediary that absorbs or blocks heat before it can reach the transparent cap, thereby preventing the cap from softening and extending its service life while maintaining visual inspection capability.
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 reduces the risk of oil leakage and cap failure by thermally shielding the cap, allowing for reliable lubricating oil maintenance and extended cap lifespan, while enabling visual inspection of oil levels and quality.
Implementation Method 1
the second material is different from the first material and is more thermally resistant than the first material enabling the shield to thermally shield the inner side of the cap
Data Source
AI summary
A lubricating oil maintenance cap assembly includes a cap having an outer side, and an inner side, a shield, anchor assemblies, the shield is applied to the inner side of the cap, and the anchor assemblies anchor the shield to the cap. The cap is fashioned of a first material, the shield is fashioned of a second material, and the second material is different from the first material and is more thermally resistant than the first material enabling the shield to thermally shield the inner side of the cap.