Catcher Bearing Gap Adjustment in Magnetic Suspension Bearings
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Solution Overview
Problem
The existing magnetic suspension bearing systems require tedious disassembly and installation steps to adjust the axial position of catcher bearings, which complicates the process of ensuring equal gaps on both sides of the catcher bearing, leading to potential damage during magnetic bearing failure.
Innovation Solution
A magnetic suspension bearing device with a catcher bearing bracket that includes sub-washer portions, allowing for axial movement and radial removal of washers, enabling gap adjustment without complete disassembly, and utilizing axial and radial extension portions with bolts for secure engagement and adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the catcher bearing bracket is completely disassembled to adjust the washer for gap adjustment, then the gap adjustment can be performed, but the disassembly and installation steps become tedious and complex
Solution Approach 1:
The washer is divided into multiple sub-washer portions that can be independently removed and installed. This segmentation allows the washer to be adjusted without completely disassembling the catcher bearing bracket, as the sub-washer portions can be manipulated separately while the bracket remains assembled.
Solution Approach 2:
The catcher bearing bracket is designed with movable characteristics, allowing it to be temporarily shifted axially to enable washer adjustment. The bracket can move between a fixed state (when engaged with the housing) and a movable state (when shifted to allow washer removal), providing dynamic adaptability for maintenance operations.
2Stability of the object's composition
If the catcher bearing bracket is fixed securely to the housing, then the structural stability is improved, but the ability to access and adjust the washer is reduced
Solution Approach 1:
The connection between the catcher bearing bracket and housing is designed to be dynamically adjustable. The bracket can be securely fixed during normal operation, but can be temporarily shifted axially when needed to access the washer for adjustment, combining stability with maintainability.
Solution Approach 2:
The washer adjustment function is extracted from the main bracket structure and implemented through separate sub-washer portions that can be independently accessed. This allows the bracket to remain securely mounted while the washer components can be removed and adjusted without complete disassembly.
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
Simplifies the adjustment of catcher bearing gaps, reducing the complexity of assembly and disassembly, and allowing for precise alignment of the rotor, thereby preventing damage during magnetic bearing failure.
Implementation Method 1
Magnetic suspension bearing mechanisms based on electromagnetic force are widely used in mechanisms such as compressors
Implementation Method 2
catcher bearings are often provided, the purpose of which is to prevent parts of the magnetic bearing from being damaged due to collision in the case of magnetic bearing failure
Data Source
AI summary
A magnetic suspension bearing device, a compressor and a method for adjusting catcher bearing gap. The magnetic suspension bearing device includes: a housing; a rotor in the housing; a magnetic bearing assembly between the housing and the rotor; a catcher bearing bracket mounted axially to an end of the housing, with a catcher bearing mounted at a radially inner side of the catcher bearing bracket; and a washer between the catcher bearing bracket and the end of the housing; wherein the washer includes a plurality of sub-washer portions, such that when the catcher bearing bracket is moved axially relative to the end of the housing to separate from the washer while still being supported by the end of the housing, the plurality of sub-washer portions can be radially removed and mounted.