Driverless Coil Transport via Leaky Waveguide Control
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Solution Overview
Problem
Existing metal coil transportation systems face challenges with short coil intervals, inflexibility, and high damage rates due to rapid station times, leading to reduced manufacturing quality and inefficiency.
Innovation Solution
A multi-track rail system with driverless transporting carriages equipped with on-board communication devices and a central control system, utilizing leaky waveguides for wireless communication, position sensors, and electric motors for flexible and controlled transportation, allowing for remote operation and reduced handling of coils.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If known conveyors are used for transporting metal coils, then the system is relatively simple to construct, but the coil removal rate cannot achieve less than a minute and the system lacks flexibility
Solution Approach 1:
The system is divided into multiple independent driverless transporting carriages that operate autonomously on the rail system. Each carriage is equipped with its own drive device and communication device, allowing independent control and operation. This segmentation enables parallel transportation of multiple coils simultaneously, achieving coil removal rates of less than a minute while maintaining manageable system complexity through modular architecture.
Solution Approach 2:
The system implements dynamic control through a central control device that receives location information from multiple carriages and generates real-time control commands. The driverless carriages can dynamically adjust their operations based on coil intervals and station times, enabling flexible adaptation to varying production requirements and achieving high-speed coil removal rates.
2Productivity
If rapid lifting is performed to achieve short station times, then productivity increases, but damage occurs to the coils and manufacturing quality is adversely affected
Solution Approach 1:
The system extracts the lifting operation from the transportation process by using driverless transporting carriages that move coils horizontally along the rail system without vertical lifting. The coils remain on the carriages throughout transportation, eliminating damage caused by rapid lifting while maintaining short station times through efficient horizontal transport and autonomous carriage operations.
Solution Approach 2:
The driverless transporting carriage serves as an intermediary between the coil source and destination, carrying the coil throughout the transportation process. This intermediary approach allows the coil to be moved without direct handling or lifting operations, protecting the coil from damage while achieving rapid transportation and short station times.
3Productivity
If more transporting carriages are deployed to handle short coil intervals, then productivity improves, but the system becomes less flexible and more complex to operate
Solution Approach 1:
Each transporting carriage is equipped with a communication device that provides location information to the central control device. The central control device uses this feedback to generate appropriate control commands, enabling coordinated operation of multiple carriages. This feedback mechanism allows the system to handle short coil intervals efficiently while maintaining flexibility through real-time adjustment of carriage operations based on actual system state.
Solution Approach 2:
The driverless transporting carriages operate autonomously using their own drive devices and communication devices. Each carriage can independently navigate the rail system and execute transportation tasks without manual intervention. This self-service capability allows multiple carriages to be deployed for high productivity while maintaining system flexibility through autonomous decision-making and reduced operational complexity.
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 system enhances availability and flexibility, reduces coil damage, and improves manufacturing efficiency by enabling precise control and coordination of transportation processes, allowing for adaptable handling of metal coils during short intervals.
Implementation Method 1
the communication connection is established via at least one leaky waveguide arranged on the line side
Implementation Method 2
the position sensor is formed by a reading head arranged on the vehicle side and a code rail arranged on the line side
Implementation Method 3
the drive device is an electric motor controlled by power electronics
Data Source
AI summary
A transporting system for transporting metal coils, for example hot coils, may include a multi-track rail system; a number of driverless transporting carriages, which can be moved on the rail system by means of a drive device and are equipped with an on-board communication device; a locating device, with which up-to-the-moment locational information can be determined for each transporting carriage located on the rail system; and a central control device, to which the locational information of each transporting carriage can be fed, wherein a communication link, which at least in certain sections is formed without any lines, can be established between the control device and the communication device.