Large-Diameter Rolling Bearing Layout for Radial Deformation Control
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Solution Overview
Problem
Large-diameter rolling bearings face issues with deformation and separation under high radial loads, and existing designs either fail to handle high axial loads and tilting moments or require excessive installation space and assembly steps.
Innovation Solution
A rolling bearing design featuring concentric inner and outer rings with two axial bearings spaced apart axially and a single radial bearing disposed between them, with the radial bearing positioned between the outer and inner raceways, reducing deformation and installation space requirements while supporting high axial loads and tilting moments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If two radial bearings and two axial bearings are used to surround the nose ring, then radial deformation is counteracted and force distribution is uniform, but installation space and assembly complexity increase considerably
Solution Approach 1:
The invention extracts one radial bearing from the conventional four-bearing configuration, reducing the total number of bearings from four to three (one radial bearing and two axial bearings). This extraction maintains the essential function of counteracting radial deformation while simplifying the overall structure and reducing installation complexity.
Solution Approach 2:
The invention merges the functions of multiple bearings into a more compact arrangement where the single radial bearing works in conjunction with two axial bearings. The radial bearing is positioned to work between the inner and outer rings while the axial bearings are arranged on opposite sides, creating a integrated support system that achieves uniform force distribution with fewer components.
2Force
If conventional radial and axial bearings are used, then basic load support is provided, but high axial load and high tilting moment capabilities are not achieved
Solution Approach 1:
The invention enhances the bearing's capability to handle high axial loads and tilting moments by optimizing the spatial arrangement of the bearings. The two axial bearings are positioned on opposite sides of the nose ring, creating a distributed support system that effectively resists tilting moments. The radial bearing is strategically positioned to work in conjunction with the axial bearings, providing multi-directional load support that improves reliability under complex loading conditions.
3Force
If multiple bearings are used to support high loads, then load capacity increases, but the number of parts and installation space increase
Solution Approach 1:
The invention arranges the radial bearing and two axial bearings in a nested-like configuration where the radial bearing is positioned between the inner and outer rings, and the axial bearings are arranged on opposite sides of the nose ring. This compact arrangement allows the three bearings to work together in a space-efficient manner, maintaining high load capacity while minimizing the overall installation footprint compared to conventional four-bearing designs.
Data Source
AI summary
A rolling bearing provides an inner ring and an outer ring concentrically about a rotation axis X-X′ running in an axial direction, and at least first and second axial bearings each axially disposed between the inner ring and the outer ring and each having at least one row of rolling elements, the first and second axial bearings being spaced apart from each other in the axial direction. The rolling bearing further provides only one radial bearing radially disposed between the inner ring and the outer ring and having at least one row of rolling elements. The radial bearing is disposed between an outer raceway located on the inner ring and an inner raceway located on the outer ring.