Magnetic Geared Motor Support for Lower Rail Dynamic Load
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Solution Overview
Problem
Railway vehicles face damage to rails due to the dynamic load of magnetic geared motors, which increases wear and potential damage when directly supported by the axle, necessitating a reduction in the dynamic load acting on the rail.
Innovation Solution
An electric-powered vehicle design that includes a magnetic geared motor with a stator, low-speed rotor, and high-speed rotor, supported by a vehicle structure such as a bogie, and an elastic coupling to transmit rotational force to the axle, reducing the direct dynamic load on the rail.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If the magnetic geared motor is directly supported by the axle, then the motor weight is reduced and the drive system is simplified, but the dynamic load on the rail increases causing wear and damage
Solution Approach 1:
The patent introduces a motor support as an intermediary component that connects the magnetic geared motor to the vehicle structure. This motor support transfers the motor's dynamic load to the vehicle structure rather than directly to the axle and rail, thereby reducing rail wear and damage while still achieving weight reduction compared to conventional supported-by-axle configurations
2Device complexity
If the motor is supported by the axle, then the structure is simplified, but the full dynamic load acts on the rail causing damage
Solution Approach 1:
The motor support serves as a mediator between the motor and the vehicle structure, distributing the dynamic load through this intermediate component. This adds minimal structural complexity while effectively preventing direct transmission of harmful dynamic loads to the rail, thus protecting against rail damage
3Object-affected harmful factors
If a speed reducer is used to reduce dynamic load on the rail, then rail wear is reduced, but the motor weight increases
Solution Approach 1:
Instead of using a speed reducer to mitigate rail wear, the patent employs a motor support as an intermediary that directly intercepts and redirects the dynamic load to the vehicle structure. This approach achieves rail protection without the weight penalty associated with adding speed reduction mechanisms to the motor
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
This configuration effectively reduces the dynamic load on the axle body, minimizing rail wear and damage by indirectly applying the motor's load through the vehicle structure, thereby extending the life of the rail.
Implementation Method 1
an elastic coupling for coupling the low-speed rotor and the axle such that a rotational force of the low-speed rotor is transmittable to the axle
Implementation Method 2
a magnetic geared motor for rotating the axle, the magnetic geared motor including a stator, a low-speed rotor, and a high-speed rotor
Data Source
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AI summary
An electric-powered vehicle includes: an axle body that includes an axle and drive wheels connected to both ends of the axle; a magnetic geared motor for rotating the axle, the magnetic geared motor including a stator, a low-speed rotor, and a high-speed rotor; a vehicle structure supported by the axle body; a motor support for connecting the vehicle structure and the stator, and supporting the magnetic geared motor by the vehicle structure; and an elastic coupling for coupling the low-speed rotor and the axle such that a rotational force of the low-speed rotor is transmittable to the axle.