Shaft Integral Limiting Projection with Force Transferring Part
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Solution Overview
Problem
Conventional bearing position-limiting methods, such as interference fit and adhesion, have low reliability and can weaken the shaft, while methods like grooves or screw threads on the shaft are not suitable for long shafts, affecting the performance and safety of mechanical equipment.
Innovation Solution
A bearing position-limiting system featuring a position-limiting projection integrally formed with the shaft, a bearing inner race, and a force transferring part, where the inner diameter of the bearing inner race is larger than the outer diameter of the position-limiting projection, allowing for effective position-limiting without compromising shaft strength, and is applicable to bearings on long shafts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If grooves or screw threads are provided on the shaft to limit the bearing, then the bearing position is constrained, but the strength of the shaft is reduced
Solution Approach 1:
The patent introduces a force transferring part as an intermediary component between the position-limiting projection and the bearing inner race. This intermediary transfers the limiting force without requiring grooves or threads on the shaft, thereby maintaining shaft strength while achieving reliable position limitation.
2Reliability
If conventional position-limiting methods are used, then the bearing is constrained, but the assembly and disassembly of the bearing is interfered with
Solution Approach 1:
The patent creates a dynamic limiting system where the force transferring part can interact with the position-limiting projection during assembly and disassembly. The inner diameter of the bearing inner race is designed to be larger than the outer diameter of the position-limiting projection, allowing easy passage during assembly while providing effective limiting during operation.
Data Source
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AI summary
Disclosed is a bearing limiting system. The limiting system comprises a limiting bulge (1) formed integrally with a shaft, a bearing inner race (2), and an acting force conduction part (3), wherein the acting force conduction part (3) is arranged between the limiting bulge (1) and the bearing inner race (2), and the inner diameter of the bearing inner race (2) is greater than the outer diameter of the limiting bulge (1). The bearing limiting system is convenient in installation, can realize the effective limiting of a bearing inner race while not affecting either the strength of the shaft or the assembly and disassembly of the bearing, and is especially suitable for a bearing with a long shaft.