Open-Centered Rolling Bearing Layout for Radial Deformation Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Large open-centered rolling bearings face issues with radial deformations and tilting under high loads, leading to premature wear and increased weight and cost due to the need for thicker cross-sections to resist deformation and fatigue.
Innovation Solution
The use of at least three radial bearings distributed on both inner and outer circumferential sides of the bearing rings to support each other radially, distributing loads and preventing overloads at a single ring portion, allowing for thinner cross-sections and reduced weight and material costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the bearing rings are made with thicker cross-sections to resist deformation and fatigue under high loads, then the strength and stability of the bearing rings are improved, but the weight and manufacturing costs increase significantly
Solution Approach 1:
The invention divides the bearing structure into multiple functional components: bearing rings, radial bearings, axial bearings, and a connecting structure. The radial bearings are segmented and distributed around the circumference, allowing each to handle localized loads independently. This segmentation enables the use of thinner bearing ring cross-sections while maintaining overall structural strength through the distributed bearing support system.
Solution Approach 2:
The connecting structure acts as an intermediary element between the bearing rings and the radial bearings. It transfers and distributes forces from the bearing rings to multiple radial bearings, preventing direct stress concentration on the bearing ring cross-sections. This intermediary structure allows the bearing rings to be made thinner while still resisting deformation through the distributed force distribution provided by the connecting structure and radial bearings.
2Device complexity
If fewer radial bearings are used, then the device complexity and manufacturing costs are reduced, but radial deformations and tilting occur under high loads leading to premature wear
Solution Approach 1:
The invention applies local quality by distributing radial bearings at specific locations around the circumference of the bearing rings, rather than using a continuous support structure. Each radial bearing is positioned to handle specific localized loads and deformation tendencies at its location. This localized bearing arrangement provides reliable prevention of radial deformations and tilting while keeping the overall device complexity manageable through selective placement rather than continuous support.
Solution Approach 2:
The invention transitions from a two-dimensional planar support concept to a three-dimensional distributed support system. Radial bearings are arranged around the circumference in multiple locations, creating a spatial distribution of support points. This three-dimensional arrangement of bearings provides comprehensive resistance to radial deformations and tilting forces from multiple directions, improving reliability while maintaining reasonable device complexity through strategic spatial placement.
3Weight of moving object
If the bearing rings are made thinner to reduce weight and cost, then the weight and material usage are reduced, but the bearing rings become more susceptible to radial deformations and tilting under high loads
Solution Approach 1:
The support function is segmented from the bearing ring structure itself and transferred to separate radial bearing components. This allows the bearing rings to be made thinner and lighter while the segmentation of support functions across multiple radial bearings maintains the overall stability. Each radial bearing segment handles a portion of the stability requirement, collectively providing comprehensive support for thin-walled bearing rings under high loads.
Solution Approach 2:
The connecting structure serves as an intermediary that decouples the structural stability function from the bearing ring cross-sectional thickness. It transfers loads from the thin bearing rings to the radial bearings, allowing the bearing rings to be lightweight while the connecting structure and radial bearing system collectively maintain stability. This intermediary mechanism enables thin-walled rings to achieve the stability of thicker sections through distributed external support.
Data Source
AI summary
An open-centered large rolling bearing having two concentric bearing rings, which are supported against one another in the axial direction of the rolling bearing by means of at least two axial bearings, which are arranged on opposite end faces of a bearing ring. In the radial direction, the bearing rings are supported against one another by at least three radial bearings, which are arranged on inner and outer circumferential sides of a bearing ring.