Repositionable Bearing Housing for Redistributing Load Support
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Solution Overview
Problem
Conventional bearings in turbo devices face durability issues due to concentrated load on specific positions, making it difficult to change the load supporting position without damaging the bearing, as the rotation preventing pin is coupled by interference fit, limiting flexibility in load distribution.
Innovation Solution
A bearing design with multiple pin holes on the outer surface allows for easy repositioning of the rotation preventing pin, enabling the load supporting position to be changed by screwing the pin into different holes, thereby redistributing the load across the inner surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the rotation preventing pin is coupled to the housing by interference fit, then the coupling strength is improved, but the ease of repositioning the pin deteriorates
Solution Approach 1:
The housing is segmented with multiple pin holes distributed around its circumference, allowing the rotation preventing pin to be repositioned between different holes. This segmentation enables the pin to be removed from one location and installed at another, facilitating repositioning while maintaining coupling strength through the interference fit design at each hole location.
Solution Approach 2:
The position parameter of the rotation preventing pin is made changeable by providing multiple pin holes at different angular positions around the housing circumference. The pin can be relocated to different holes to change its angular position, thereby changing the load supporting position on the inner circumferential surface without compromising the interference fit coupling strength.
2Ease of manufacture
If the load supporting position is fixed, then the manufacturing simplicity is improved, but the durability deteriorates due to concentrated load
Solution Approach 1:
Multiple pin holes are provided at different angular positions around the housing, segmenting the possible load supporting positions. This allows the load to be distributed to different locations on the inner circumferential surface by repositioning the pin, thereby improving durability through load distribution while maintaining manufacturing simplicity through the standardized hole pattern.
Solution Approach 2:
The load supporting position is made dynamically adjustable by allowing the rotation preventing pin to be repositioned between multiple pin holes. This dynamic repositioning capability enables the system to adapt to wear patterns and distribute loads differently over time, improving durability while the fixed hole locations maintain manufacturing simplicity.
3Adaptability or versatility
If multiple pin holes are provided on the housing, then the adaptability to change load position is improved, but the device complexity increases
Solution Approach 1:
The housing is segmented with multiple pin holes at standard angular intervals, providing discrete load supporting positions. This segmentation achieves adaptability for changing load positions while keeping device complexity low through the simple, standardized arrangement of holes that requires minimal additional manufacturing steps.
Solution Approach 2:
The multiple pin holes provide universal adaptability, allowing the rotation preventing pin to serve multiple functions at different positions. Each pin hole location enables the bearing to support loads at different angular positions, making the bearing adaptable to various operational conditions without requiring multiple different bearing components, thus avoiding excessive complexity.
Data Source
AI summary
A bearing of which a load supporting position capable of being changed, including: a cylindrical housing comprising a hollow inner circumferential surface; one or more support members provided in the housing and disposed along a circumferential direction of the inner circumferential surface; a plurality of pin holes provided along an outer circumferential surface of the housing; and a rotation preventing pin coupled to a first pin hole of the plurality of pin holes and configured to prevent rotation of the housing. In addition, threads are formed on inner circumferential surfaces of the pin holes and an outer circumferential surface of the rotation preventing pin to enable a pin hole and the rotation preventing pin to be easily coupled and decoupled.