Bearing Device Surface Load Distribution Means
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Solution Overview
Problem
Existing bearing devices for structural parts suffer from high mechanical tension and abrasion due to point or linear contact between the mandrel and sleeve, leading to premature damage and reduced service life, especially under transverse forces.
Innovation Solution
Incorporating a surface load distribution means within the sleeve that distributes transverse forces over a larger area, reducing Hertzian pressure and incorporating a recess for the mandrel to enhance stability and contact area, thereby alleviating material stress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If the mandrel rests directly against the sleeve wall, then the bearing device can support transverse forces, but high mechanical stress and abrasion occur leading to premature damage
Solution Approach 1:
A load distribution element is introduced as an intermediary component between the mandrel and the sleeve wall. This element has a first contact surface that receives the transverse force from the mandrel and a second contact surface that distributes the force to the sleeve wall over a larger area, thereby reducing the Hertzian contact stress and preventing premature damage to the bearing device components
2Device complexity
If the mandrel has a circular cross-section resting on a plane, then the structure is simple, but the contact area is ideally just a line causing high stress concentration
Solution Approach 1:
The load distribution element transforms the contact geometry by introducing a new dimension to the contact interface. Instead of a line contact between the circular mandrel and the planar sleeve wall, the load distribution element creates a surface contact where the second contact surface distributes the force over a larger area of the sleeve wall, effectively moving from 1D line contact to 2D surface contact
Data Source
Figure 1~2
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AI summary
The invention relates to a bearing device (10) for supporting a first structural element (12) on a second structural element (14) in at least one transverse direction (1), comprising a sleeve (16) that can be fixedly inserted into the first structural element (12), and a pin (18) that can be fixedly inserted into the second structural element (14), wherein the pin (18) is supported in the sleeve (16) to absorb the transverse force (Q). It is proposed that a surface load distribution means (20) be arranged within the sleeve (16), on which the pin (18) is supported in the transverse direction (1).