Shaft-Less Electrical Machine Transport Support for Assembled Rotor Handling
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Solution Overview
Problem
Shaft-less rotating electrical machines cannot be transported in their assembled condition due to the absence of a rotor shaft for securing the rotor to the stator frame, requiring separate packaging and a time-consuming assembly process upon delivery.
Innovation Solution
A support structure comprising supports positioned in the air gap between the stator and rotor, and transport brackets fixedly connected between the stator frame and rotor, allowing for stable radial and axial support during transportation and assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the rotor is transported separately from the stator frame, then the transportation becomes feasible for shaft-less machines, but the assembly process becomes time-consuming and complex
Solution Approach 1:
The support structure is installed in advance during manufacturing, enabling the rotor to be positioned correctly within the stator frame before transportation. This preliminary positioning action allows the machine to be transported in an assembled state, eliminating the need for time-consuming assembly operations at the customer site while maintaining transportation feasibility for shaft-less machines.
Solution Approach 2:
The support structure acts as an intermediary component between the rotor and stator frame, providing mechanical connection and positioning without requiring a rotor shaft. This mediator enables the rotor to be securely held in position during transportation, allowing assembled transport while avoiding the complexity of traditional shaft-based securing methods.
2Stability of the object's composition
If the rotor is secured to the stator frame using traditional methods, then radial and axial movement is prevented, but the structure becomes too complex for shaft-less machine applications
Solution Approach 1:
The support structure is divided into multiple discrete support elements distributed around the air gap between the rotor and stator frame. Each support element provides localized stabilization, collectively preventing radial and axial movement of the rotor without requiring a single complex securing mechanism. This segmented approach maintains simplicity while achieving the required positioning stability.
Solution Approach 2:
The support structure serves as an intermediary mechanical connection between the rotor and stator frame, replacing the need for traditional rotor shafts and associated securing mechanisms. This intermediary provides the necessary stability for rotor positioning while maintaining the shaft-less design simplicity, avoiding the structural complexity that would arise from adapting traditional shaft-based securing methods.
Data Source
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AI summary
A shaft-less rotating electrical machine (1) is described. The electrical machine (1) has a stator (4) supported by a stator frame (8) and a rotor (2) that is mechanically connectable to a shaftline and is positioned radially inside the stator (4). The electrical machine (1) is prepared for transport and includes a support structure for stably supporting the rotor (2) inside the stator frame (8). The support structure includes one or more supports (14) that are positioned in the air gap between the stator (4) and the rotor (2), and one or more transport brackets (16). The transport brackets (16) are fixedly connected between the stator frame (8) and the rotor (2).