Transport Rail Eddy Current Braking for Vibration-Safe Stops

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Solution Overview

Problem

Vibration generated during the movement of transport vehicles in semiconductor manufacturing processes can cause damage to the vehicles and materials, and sudden braking can lead to overload and damage to the motors.

Innovation Solution

A transport apparatus equipped with a brake unit that applies an eddy current braking force, controlled by a brake controller that responds to vibration sensors to reduce vibration and enhance braking efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of time

If sudden braking is applied to stop the transport vehicle quickly, then braking time is reduced, but motor overload and vibration increase causing damage

Engineering Contradiction:

Improvebraking timeVSAvoidmotor damage

Core Design Contradiction:

Loss of timeVSReliability

Solution Approach 1:

The patent replaces the traditional mechanical friction braking system with an eddy current braking system that uses electromagnetic fields. The brake unit generates a magnetic field that induces eddy currents in the conductive transport vehicle, creating a non-contact braking force. This substitution eliminates mechanical contact, reducing motor overload and vibration while achieving rapid deceleration.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces a magnetic field as an intermediary between the brake unit and the transport vehicle. The brake unit generates a magnetic field that penetrates the conductive vehicle body, inducing eddy currents that produce the braking force. This intermediary approach allows for contactless braking, avoiding direct mechanical stress on motors and reducing vibration.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Force

If traditional friction braking is used, then braking force is applied through mechanical contact, but vibration and motor overload increase causing damage

Engineering Contradiction:

Improvebraking forceVSAvoidvibration

Core Design Contradiction:

ForceVSObject-affected harmful factors

Solution Approach 1:

The patent replaces mechanical friction braking with electromagnetic eddy current braking. Instead of using friction pads that physically contact the vehicle, the system uses a magnetic field to induce eddy currents in the conductive vehicle body. This non-contact approach eliminates mechanical vibration and shock while maintaining effective braking force.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent converts the electrical conductivity of the transport vehicle, which could be seen as a vulnerability to electromagnetic interference, into a beneficial feature. The conductive body acts as an eddy current brake surface, allowing the magnetic field to generate braking force directly through the vehicle structure, transforming a potential harm into a useful braking mechanism.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

3Productivity

If mechanical brake systems are used, then braking is achieved through physical contact, but wear and damage to braking components occur

Engineering Contradiction:

Improvebraking efficiencyVSAvoidcomponent durability

Core Design Contradiction:

ProductivityVSStrength

Solution Approach 1:

The patent substitutes mechanical friction braking components with an electromagnetic brake unit. The brake unit generates a magnetic field that induces eddy currents in the conductive transport vehicle, creating a contactless braking force. This eliminates wear on braking components such as pads and discs, significantly improving component durability while maintaining braking efficiency.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent uses a magnetic field as an intermediary to transmit braking force without physical contact. The brake unit generates magnetic flux that penetrates the conductive vehicle body, inducing eddy currents that produce the braking force. This intermediary approach allows efficient braking transmission while eliminating mechanical wear and damage to braking components.

Inventive Principle:

Principle #24Intermediary (Mediator)

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 effectively reduces vibration and shortens braking time, particularly during sudden braking, thereby minimizing damage to the transport vehicle and materials.

Implementation Method 1

a brake unit mounted on the transport vehicle to be adjacent to the transport rail and configured to apply an eddy current braking force to the transport vehicle

Methodology Applied

Scientific EffectEddy current braking: Eddy Currents

Data Source

PatentUS12327745B2Transport apparatus

Publication Date: 2025.06.10 SYSTEM ENGINEERING MEGA SOLUTION CO LTD

AI summary

A transport apparatus includes a transport rail extending along a predetermined path, a transport vehicle configured to be movable along the transport rail to transport a material, and a brake unit mounted on the transport vehicle to be adjacent to the transport rail and configured to apply an eddy current braking force to the transport vehicle.