Detachable Rotor Adapter for Wear-Prone Shaft Couplings
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing motor rotors require different configurations for rotary devices with varying insertion hole designs, leading to increased costs and maintenance due to wear and tear of spline teeth, necessitating frequent replacements.
Innovation Solution
A rotor design featuring a rotor body with a recess and an adapter that can be detachably attached, allowing for the connection of rotary devices with different shaft configurations through spline or tapered couplings, with the adapter being replaceable to adapt to various devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If tapered coupling or spline coupling is used to non-rotatably insert the shaft into the insertion hole, then the rotational force can be effectively transmitted to the rotary device, but the shaft configuration must change when the insertion hole configuration changes, requiring different motor rotors for different rotary devices
Solution Approach 1:
The rotor is divided into two independent parts: a rotor body and an adapter. The rotor body contains a recess, and the adapter is inserted into this recess. This segmentation allows the adapter to be independently configured for different rotary device insertion holes while the rotor body remains standardized, enabling the same motor rotor to adapt to various rotary devices by simply changing the adapter component.
Solution Approach 2:
The adapter acts as an intermediary component between the rotor body and the rotary device shaft. It mediates the connection by being inserted into the rotor body's recess and receiving the rotary device shaft through tapered or spline coupling. This intermediary structure allows the standardized rotor body to interface with various rotary device configurations without requiring changes to the rotor body itself.
2Reliability
If spline teeth are used for coupling, then the shaft can be non-rotatably inserted into the insertion hole, but the spline teeth are subject to wear due to minute vibration, requiring frequent motor replacement
Solution Approach 1:
By segmenting the rotor into a rotor body and a separate adapter, the wear-prone spline teeth or tapered coupling surfaces are isolated to the adapter component. This allows the adapter to be replaced independently when worn, preserving the rotor body and extending the overall system service life without requiring complete motor replacement.
Solution Approach 2:
The adapter is designed as a consumable component that can be economically replaced when worn. Since the adapter contains the wear-prone coupling surfaces (spline teeth or tapered surfaces), replacing only this relatively simple and inexpensive component rather than the entire motor resolves the durability issue cost-effectively.
3Adaptability or versatility
If different shaft configurations are used for different insertion hole configurations, then each rotary device can be properly coupled, but multiple motor rotors must be prepared, increasing the cost of the motor
Solution Approach 1:
The rotor system is segmented into a standardized rotor body and configurable adapters. This segmentation enables the use of a single rotor body design paired with multiple adapter variants, each tailored to specific insertion hole configurations. This reduces the number of complete rotor variants needed while maintaining adaptability to different rotary devices.
Solution Approach 2:
The standardized rotor body with a universal recess design can accommodate multiple types of adapters through the same interface. This universality allows one rotor body to serve multiple functions by interfacing with different adapter types, each designed for specific rotary device configurations, thereby reducing the need for multiple specialized rotor designs.
Data Source
AI summary
A rotor for an electric motor according to the present disclosure is for an electric motor that provides power to rotary equipment, the rotor comprising: a rotor body which is rotatably disposed inside a stator and has a recess on one end surface in the axial direction; an adaptor which is inserted into the recess and thereby attached to the rotor body, and into which the shaft of the rotary equipment is non-rotatably inserted; and a fixing unit that detachably fixes the adaptor to the rotor body.