Multi-layer Bearing Arrangement with Elastic Gliding Elements
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Solution Overview
Problem
Conventional bearing arrangements face limitations in durability, stability, and robustness, particularly at high loads and angular frequencies, due to constraints on relative speed and diameter, which restrict the application of low-maintenance and maintenance-free designs in high-loaded scenarios.
Innovation Solution
A bearing arrangement with multiple layers interconnected by intermediate gliding elements and flexible connectors, allowing for increased relative velocity distribution and enhanced durability by arranging bearing layers in series, which can include mechanical or elastomeric springs designed for shear loads, and featuring polytetrafluoroethylene gliding components for self-lubrication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If bearing layers are arranged in parallel with single layer configuration, then device complexity is reduced, but relative speed and durability are limited
Solution Approach 1:
The bearing arrangement is divided into multiple bearing layers (first bearing layer with first bearing support element, second bearing layer with second bearing support element) arranged in parallel, each layer capable of independently carrying load and accommodating relative motion. This segmentation allows the system to achieve higher durability and reliability while maintaining manageable complexity through modular design.
Solution Approach 2:
The patent transitions from a single-layer bearing arrangement to a multi-layer parallel configuration, adding a dimensional aspect to the bearing structure. This multi-layer arrangement enables distribution of relative speed across multiple layers, thereby increasing the maximum feasible relative speed and improving durability without proportionally increasing device complexity.
2Strength
If bearing ring diameter is increased to accommodate high shaft diameter, then load capacity is improved, but relative speed capability is limited
Solution Approach 1:
The bearing arrangement segments the load-carrying function across multiple bearing layers, allowing each layer to operate at optimized dimensions. This enables the use of smaller bearing ring diameters while maintaining high load capacity through the combined effect of multiple layers, thereby achieving both high load capacity and high relative speed capability.
Solution Approach 2:
The patent employs a composite bearing structure combining multiple bearing layers with different functional characteristics. This composite arrangement allows optimization of each layer for specific functions (load carrying, speed accommodation), achieving a balance between load capacity and relative speed that cannot be attained with a single uniform bearing structure.
3Duration of action of stationary object
If bearing layer width is increased to improve durability, then service life is extended, but device dimensions and weight increase
Solution Approach 1:
The bearing arrangement segments the durability function across multiple parallel layers, allowing each layer to be narrower while collectively providing enhanced durability. This segmentation enables extension of service life through increased layer count rather than increasing individual layer width, thereby reducing overall bearing arrangement weight and dimensions.
Solution Approach 2:
The patent changes the structural parameter from single-layer wide configuration to multi-layer narrow configuration. This parameter change allows the system to achieve the same or better durability through increased layer count, while reducing the width and weight of individual layers, resulting in a more compact and lighter overall bearing arrangement.
4Adaptability or versatility
If maximum angular amplitude is increased to accommodate larger motions, then motion capability is improved, but stability and durability decrease
Solution Approach 1:
The bearing arrangement segments the motion accommodation function across multiple parallel layers, allowing each layer to operate within a smaller, more stable angular amplitude range. This segmentation enables the system to achieve large overall motion capability through the combined effect of multiple layers, while each individual layer maintains high stability and durability by operating within optimized motion limits.
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
This configuration increases the total relative velocity of individual bearing layers, enhances durability, and allows for larger shaft diameters, higher angular frequencies, and improved safety by distributing relative speed and reducing the maximum feasible angular amplitude, while enabling a more compact and lighter design.
Implementation Method 1
Said at least one intermediate gliding element is elastically attached to said at least one first bearing support element by means of at least one first flexible connector and to said at least one second bearing support element by means of at least one second flexible connector
Implementation Method 2
featuring polytetrafluoroethylene gliding components for self-lubrication
Data Source
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AI summary
The invention is related to a bearing arrangement (20) with a first bearing layer (20a) comprising a first bearing support element (21a, 22a) and a second bearing layer (20b) comprising a second bearing support element (21c, 22c), said first and second bearing layers being glidingly interconnected by at least one intermediate gliding element (21b, 22b), wherein at least one first gliding surface (16a) is arranged between said first bearing support element and said at least one intermediate gliding element, and wherein at least one second gliding surface (16b) is arranged between said second bearing support member and said at least one intermediate gliding element, said at least one intermediate gliding element being elastically attached to said first bearing support element by means of at least one first flexible connector (14a) and to said second bearing support element by means of at least one second flexible connector (14b).