Petal-Segment Electric Machine Assembly for Transportable Large Diameters
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Solution Overview
Problem
Large-diameter electric machines exceed road transportation limits, leading to high transportation costs due to their size, as existing technologies fail to effectively split or assemble these machines without incurring significant logistical challenges.
Innovation Solution
An electric machine splitting or assembling device and method that disassembles the machine into petal segments using first and second disassembly devices and a sleeving device, allowing for the separation and reassembly of the stator and rotor components, enabling transportation within size limits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the outer diameter of the electric machine is increased to meet higher power requirements, then the power output is improved, but the transportation feasibility deteriorates due to exceeding road transportation limits
Solution Approach 1:
The electric machine is divided into multiple separable portions including a first rotary body, a second rotary body, and multiple petal segments. Each component can be independently transported and then assembled at the destination, allowing the machine to exceed transportation size limits without compromising the final power output capability
2Length of moving object
If the electric machine is split into separate parts for transportation, then the transportation feasibility is improved, but the device complexity increases due to the need for splitting and reassembly operations
Solution Approach 1:
The first rotary body and second rotary body are disposed coaxially with each other in a nested configuration, where one rotary body is positioned inside the other. This nested structure allows for compact assembly during transportation and simplifies the overall device architecture while maintaining the capability to split into manageable segments
Solution Approach 2:
The splitting device includes pre-configured separable portions and connection structures that are designed in advance to facilitate easy disassembly and reassembly. The petal segments are pre-positioned and connected through detachable connections, reducing the complexity of the splitting operation
3Adaptability or versatility
If the first rotary body and second rotary body are separated for transportation, then the transportation flexibility is improved, but the magnetic attraction forces between the separated parts increase the difficulty of separation
Solution Approach 1:
The magnetic connection between the first and second rotary bodies is selectively extracted or removed during the separation process. The detachable connections allow the magnetic attraction to be overcome and the components to be separated into independent transportable units, while the magnetic connection can be re-established during assembly
4Ease of operation
If detachable connections are used to allow separation of components, then the ease of assembly and disassembly is improved, but the strength of the connection may be reduced compared to permanent connections
Solution Approach 1:
The detachable connections are pre-designed and pre-positioned in the first and second rotary bodies with alignment features and connection structures that ensure proper positioning and adequate connection strength. The connections are engineered to provide sufficient strength for operation while maintaining ease of detachment when needed
Data Source
AI summary
The present application relates to an electric machine splitting or assembling method, an electric machine assembling method, and an electric machine splitting or assembling device including a sleeving device separating or coaxially sleeving first and second rotary bodies; the first disassembly device fixes the first rotary body and includes at least two first separable portions, and the first rotary body is split into petals in a circumferential direction by disassembling the first separable portions, or its respective petal segments are assembled in the circumferential direction by combining the first separable portions; and the second disassembly device is fixed to the second rotary body and includes at least two second separable portions, and the second rotary body is split into petals in the circumferential direction by disassembling the second separable portions, or its respective petal segments are assembled in the circumferential direction by combining the second separable portions.