Helical Magnetic Array Linear Drive for Vertical-Horizontal Transition

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Solution Overview

Problem

Conventional linear drive systems, such as those using ball screws or linear motors with worm gears, face limitations in efficiently providing motive force for linear conveyance systems, particularly in transitioning between vertical and horizontal movements while maintaining energy efficiency and flexibility.

Innovation Solution

A helical magnetic array drive system that uses a helical magnetic flux to propel a driven member within a guideway, allowing for both vertical and horizontal movement by adjusting the rotation direction and speed of the drive member, which is coupled to a prime mover, enabling efficient and flexible linear conveyance without mechanical contact.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of energy

If conventional linear drive systems use ball screws or linear motors with worm gears, then mechanical force transmission is achieved, but mechanical contact causes friction, wear, and reduced efficiency

Engineering Contradiction:
Improveenergy efficiencyVSAvoidmechanical contact components
Core Design Contradiction:
Loss of energyVSDevice complexity

Solution Approach 1:

The patent replaces the conventional mechanical contact-based ball screw or worm gear systems with a magnetic field-based linear motor system. The stator generates a moving magnetic field that directly interacts with the rotor to produce linear motion, eliminating mechanical contact, friction, and associated wear while improving energy efficiency and reducing mechanical complexity

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces a magnetic field as an intermediary between the power source and the driven load. The stator windings generate a magnetic field that couples with the rotor to transmit force without physical contact, serving as a non-mechanical mediator that resolves the contradiction between force transmission and mechanical wear

Inventive Principle:
Principle #24Intermediary (Mediator)

2Adaptability or versatility

If linear drive systems use fixed-direction motors, then simple motor structure is maintained, but flexibility in changing movement direction is reduced

Engineering Contradiction:
Improvedirection change capabilityVSAvoidmotor control system
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent implements a dynamic control system where the stator windings can be selectively energized in different sequences to change the direction of the moving magnetic field. This allows the linear motor to adapt its movement direction dynamically without physical reconfiguration, achieving versatility while maintaining relatively simple motor structure

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent changes the operational parameters of the motor control system to achieve direction reversal. By modifying the phase sequence or polarity of the stator windings, the direction of the magnetic field and consequently the linear motion can be reversed, providing adaptability through parameter adjustment rather than structural change

Inventive Principle:
Principle #35Parameter changes

3Device complexity

If conventional systems require separate mechanisms for vertical and horizontal movement, then simple individual mechanisms are used, but overall system complexity increases

Engineering Contradiction:
Improvenumber of drive mechanismsVSAvoidmulti-directional movement capability
Core Design Contradiction:
Device complexityVSAdaptability or versatility

Solution Approach 1:

The patent employs a universal linear motor system that can perform both vertical and horizontal conveyance functions through a single drive mechanism. By orienting the stator and rotor appropriately and controlling the magnetic field direction, the same motor structure achieves multi-directional movement, reducing the number of separate drive mechanisms while maintaining versatility

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent transitions from separate one-dimensional drive mechanisms to a unified system that operates in multiple dimensions. The linear motor can generate force in different directions by changing the magnetic field orientation, effectively adding dimensional capability to the drive system without requiring proportionally more mechanisms

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

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 helical magnetic array drive system provides efficient and flexible linear conveyance by adjusting the direction and speed of the drive force, enabling faster movement and energy regeneration, with potential applications in elevators, assembly lines, and other transport systems, while maintaining energy efficiency and safety features like automatic braking.

Implementation Method 1

A helical magnetic array drive system that uses a helical magnetic flux to propel a driven member within a guideway

Methodology Applied
Scientific EffectMagnetic flux: Magnetic Field

Implementation Method 2

A helical magnetic array drive system that uses a helical magnetic flux to propel a driven member within a guideway

Methodology Applied
Scientific EffectMagnetic propulsion: Electromagnetic Propulsion

Implementation Method 3

a drive member, which is coupled to a prime mover, enabling efficient and flexible linear conveyance without mechanical contact

Methodology Applied
Scientific EffectMagnetic coupling: Magnetism

Data Source

PatentUS11532977B2Magnetic linear drive device and system
Publication Date: 2022.12.20 SKYTRAN INC
  • US11532977B2 patent drawing
  • US11532977B2 patent drawing
  • US11532977B2 patent drawing

AI summary

Drive generator having a helical magnetic array. Additionally, a coupling portion is coupled to the drive generator and configured to be coupled to a vehicle. A drive member is configured to be at least partially located within the at least one drive generator, whereby the drive member is magnetically coupled to the at least one drive body. Furthermore, a prime mover is coupled to the drive member and configured to rotate the drive member, thereby imparting motion, when a portion of the drive member is located within the at least one drive generator, of the at least one drive generator relative to the drive member.