Magnetic Levitation Suspension Frame Assembly Weight Reduction
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Solution Overview
Problem
The carrying capacity of low and intermediate speed magnetic levitation vehicles is limited by the self-weight and performance of the suspension magnet, necessitating a reduction in self-weight while improving suspension capability.
Innovation Solution
A suspension frame assembly for magnetic levitation vehicles is designed with sequentially connected suspension frames, featuring fixed supporting wheels and reduced air springs, along with hinged connections and air-spring arm beams, which reduces overall weight and enhances suspension capability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If hydraulic lifting supporting wheels are used, then the supporting wheel can provide lifting function, but the overall weight of the suspension frame increases
Solution Approach 1:
The patent removes the hydraulic lifting mechanism from the supporting wheel, extracting only the necessary supporting function while eliminating the heavy hydraulic components. This allows the supporting wheel to provide basic support without the weight penalty of hydraulic systems.
Solution Approach 2:
The patent replaces the hydraulic mechanical system with a simpler mechanical structure. The supporting wheel uses a direct mechanical connection to the longitudinal beam body, eliminating complex hydraulic components while maintaining the supporting function.
2Reliability
If air springs are installed at all four ends of each suspension frame, then suspension coverage is improved, but the number of air springs and overall weight increase
Solution Approach 1:
The patent extracts air springs from three of the four ends of each suspension frame, retaining only the essential suspension function at critical locations. This reduction decreases the number of air springs from eight (four per frame × two frames) to fewer units, simplifying the system while maintaining adequate suspension coverage.
Solution Approach 2:
Instead of providing air springs at all four ends of each suspension frame (excessive action), the patent applies air springs only where most needed for suspension function (partial action). This selective placement achieves sufficient suspension coverage with fewer components.
3Reliability
If multiple air springs are used throughout the suspension frame assembly, then suspension capability is enhanced, but cooperative control becomes more difficult
Solution Approach 1:
The patent removes air springs from non-critical positions, reducing the total number of air springs that require coordination. This extraction simplifies the control architecture, making cooperative control more manageable while preserving suspension capability at the most critical locations.
4Strength
If the suspension frame assembly uses heavy components for strength, then structural strength is improved, but the self-weight increases and suspension capability deteriorates
Solution Approach 1:
The patent segments the suspension frame into multiple lightweight suspension frames connected in sequence, with each frame using thin-walled rectangular tube structures. This segmentation allows the use of lighter materials while maintaining overall structural strength through the distributed framework and connection design.
Solution Approach 2:
The patent employs thin-walled rectangular tube structures that provide adequate strength-to-weight ratio, utilizing optimized material distribution to achieve both strength and lightweight requirements in the suspension frame components.
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 results in a lighter suspension frame assembly with improved suspension capability, reduced air spring complexity for cooperative control, and enhanced flexibility and safety during curve sections and braking.
Implementation Method 1
an air-spring arm beam for mounting an air spring is provided at a hinged part of the two suspension frames
Implementation Method 2
a low and intermediate speed magnetic levitation vehicle has the advantages of low noise, strong accelerating and braking capability
Data Source
AI summary
A suspension frame assembly of a magnetic levitation vehicle, includes multiple suspension frames which are sequentially connected; and each suspension frame includes two longitudinal beam bodies arranged in parallel. A supporting wheel and a holding arm are fixedly provided on both ends of each longitudinal beam body; and two anti-rolling devices mounted between mounting frames of two of the supporting wheels at a same end of the two longitudinal beam bodies; and the two longitudinal beam bodies of one of the suspension frames are respectively hingedly connected to the two longitudinal beam bodies of an adjacent suspension frame; an air-spring arm beam is provided at a hinged part of the two suspension frames, and is mounted on the holding arm of one of the two longitudinal beam bodies which are hingedly connected.