Vibration-Resistant Slip Ring with Segmented Brush Blocks
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Solution Overview
Problem
Existing slip ring arrangements fail to maintain reliable electrical contact under high shock and impact loads, as well as mechanical vibrations, due to limited mechanical rigidity and mechanical couplings between brush wires and common brush blocks.
Innovation Solution
A slip ring arrangement featuring multiple mechanically separate brush blocks with wire brushes of varying geometries and materials, each with distinct vibration properties, and mounted with different damping values, ensuring decoupling and improved resistance to shocks and vibrations by distributing brush blocks at specific intervals around the sliding track.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple wire brushes with different diameters and contact points are used, then contact resistance is reduced and vibration tolerance is improved, but mechanical coupling through common brush blocks causes contact interruptions under high shock and impact loads
Solution Approach 1:
The invention divides the brush assembly into multiple mechanically independent brush blocks, each capable of independent movement. This segmentation eliminates mechanical coupling between brushes, allowing each brush to respond independently to vibrations and shocks, thereby preventing contact interruptions while maintaining electrical reliability.
Solution Approach 2:
The brush blocks are designed with dynamic characteristics including spring elements and damping mechanisms that allow them to adapt their position and contact pressure in response to varying operational conditions. This dynamic capability enables the brushes to maintain reliable contact during vibrations and shocks without requiring complex fixed configurations.
2Ease of manufacture
If a single common brush block is used to hold multiple brushes, then device structure is simplified, but mechanical rigidity is insufficient leading to contact interruptions under shock and vibration
Solution Approach 1:
Instead of using a single common brush block, the invention employs multiple separate brush blocks for each signal path. Each brush block is mechanically independent and can be manufactured and assembled separately, then mounted on the rotating component. This approach maintains manufacturing simplicity while dramatically improving mechanical rigidity and shock resistance.
3Reliability
If brushes are mechanically decoupled and distributed at specific intervals, then shock and vibration resistance is significantly improved, but device complexity and production cost increase
Solution Approach 1:
The brush blocks are distributed at specific angular intervals around the rotating component, with each block handling a specific signal path. This spatial segmentation provides mechanical independence and optimizes vibration resistance. The regular interval distribution actually simplifies the mounting process and ensures uniform mechanical properties throughout the rotation.
Solution Approach 2:
Multiple brush blocks are used to serve both mechanical functions (providing rigidity and shock resistance through distributed mounting) and electrical functions (maintaining multiple signal paths). This multi-functionality approach achieves high reliability without proportionally increasing complexity, as the same structural elements serve multiple purposes.
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
The solution provides enhanced shock and vibration resistance, maintaining reliable electrical contact and extending the service life of the slip ring arrangement by decoupling the brushes and utilizing diverse wire geometries and damping configurations.
Implementation Method 1
Electrical current can be transmitted through the galvanic contact between sliding tracks and contact
Implementation Method 2
at least one brush block is mounted in a vibration-damped manner
Data Source
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AI summary
A slip ring device for the electrical connection of two mutually rotatable parts includes one or more slideways each with at least one V-groove. At least two wire brushes are provided which run in (are configured to extend into) the V-grooves. The wire brushes are electrically connected to each other and are mounted on at least two different brush blocks which are mechanically decoupled from one another. Increased insensitivity to vibrations and mechanical impacts can be achieved in this way.