Long Stator Linear Motor One-Sided Guidance Switches
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Solution Overview
Problem
Long-stator linear motors face challenges in safely guiding transport vehicles along curved routes and implementing switches due to limitations in existing guidance systems, which either restrict speed or require expensive double-sided guidance.
Innovation Solution
Mechanical positive guidance is implemented along one-sided route sections outside switches, with two-sided guidance at switches to ensure secure navigation and facilitate switching, reducing design complexity and costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If one-sided guidance is used outside switches, then manufacturing complexity and costs are reduced, but vehicle stability on curved sections deteriorates due to centrifugal force
Solution Approach 1:
The transport track is segmented into different types of sections: one-sided guidance sections outside switches and two-sided guidance sections at switches. This segmentation allows each section to be optimized for its specific function, reducing overall complexity while maintaining reliability where needed.
Solution Approach 2:
Different guidance configurations are applied to different locations along the track. One-sided guidance is used in straight sections to reduce complexity, while two-sided guidance is applied at switch areas to ensure vehicle stability during switching operations, creating local quality variations that optimize both cost and reliability.
2Reliability
If two-sided guidance is used at switches, then vehicle guidance reliability is improved during switching, but device complexity increases
Solution Approach 1:
The guidance system is segmented so that two-sided guidance is applied only at critical switch sections rather than throughout the entire track. This localized application maintains high reliability during switching operations while avoiding the complexity of two-sided guidance in all sections.
Solution Approach 2:
Enhanced two-sided guidance is applied locally at switch areas where it is most needed for reliability, while simpler one-sided guidance is used in other sections. This creates a quality gradient that optimizes the balance between reliability and complexity.
3Reliability
If mechanical forced guidance is applied, then vehicle guidance reliability is improved, but adaptability to different track configurations deteriorates
Solution Approach 1:
The guidance system transitions from static mechanical forced guidance to a dynamic configuration where guidance intensity varies by location. Mechanical guidance is applied selectively in different sections, allowing the system to adapt to various track configurations including switches and curved sections while maintaining reliability.
Solution Approach 2:
Different levels of mechanical guidance are applied to different track sections based on local requirements. This allows the system to maintain reliability in critical areas while being adaptable to different overall track configurations and layouts.
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 approach ensures secure vehicle guidance along one-sided route sections while allowing for easy implementation of switches, maintaining vehicle stability and reducing manufacturing complexity and costs.
Implementation Method 1
The drive coils can be individually or collectively energized by applying a voltage to generate a magnetic field. A transport vehicle is equipped with at least one drive magnet, either a permanent magnet or an electromagnet, which interacts with the magnetic field generated by the drive coils to move the transport vehicle.
Implementation Method 2
The magnetic force of the drive magnets on the transport vehicle is used to hold it in place. Without this magnetic force, the transport vehicle would fall off the track.
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
For a long stator linear motor with a switch and safe guidance of the transport vehicles in the direction of movement along the transport track, it is provided that the transport vehicle (Tn) is mechanically guided at least section by section in the direction of movement (x) outside the switch (W), and that at least one one-sided track section (2d) is provided on the transport track (2), along which a vehicle guidance element (7) only on one side of the transport track (2) interacts with the track guidance element (6) on the associated side of the transport track (2) for mechanical guidance in the direction of movement (x), and the mechanical guidance in the direction of movement (x) is cancelled in the area of the switch (W) in the transverse direction (y).