Split Roll Shape Detection Device for Meandering and Plate Shape
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional shape detection devices in rolling mills only detect plate shape and not meandering of the rolling material, leading to increased costs, potential drawing accidents, and reduced detection accuracy due to excessive relative velocity deviations and hysteresis issues.
Innovation Solution
A shape detection device with split rolls, a reactive force detector, and computing units to accurately measure meandering and plate shape, using reactive forces to compute and control meandering and plate shape, eliminating the need for additional meandering detectors and reducing equipment costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a conventional shape detection device is used to detect only plate shape, then detection simplicity is maintained, but meandering detection capability is lost and additional equipment is required
Solution Approach 1:
The patent combines meandering detection and plate shape detection functions into a single integrated detection device. The reactive force detector simultaneously measures forces related to both meandering and plate shape, eliminating the need for separate detection equipment and reducing overall system complexity while maintaining full detection capability
Solution Approach 2:
The detection device is designed with multi-functionality to perform both meandering detection and plate shape detection using the same hardware components. The reactive force detector serves dual purposes by measuring forces that contain information about both meandering amount and plate shape, making the device universally applicable for both detection tasks
2Speed
If rolls are oscillated to synchronize rolling speeds, then rolling speed synchronization is improved, but excessive impact is added to the tension detecting portion
Solution Approach 1:
The patent introduces a reactive force detector as an intermediary measurement approach. Instead of directly measuring tension which is susceptible to impact from roll oscillation, the device measures reactive forces that indirectly reflect tension and meandering conditions. This intermediary measurement method protects the detection system from excessive impact while maintaining the ability to detect rolling speed synchronization
Solution Approach 2:
The patent replaces the conventional direct mechanical tension detection system with a reactive force detection system. By substituting the mechanical tension measurement approach with reactive force measurement, the system achieves rolling speed synchronization detection without exposing the detection components to excessive impact forces that would reduce their lifespan
3Stability of the object's composition
If fastening force is always applied to the tension detecting unit, then structural stability is maintained, but hysteresis problem occurs reducing detection accuracy
Solution Approach 1:
The patent extracts the fastening force from the detection path by measuring reactive forces instead of direct tension forces. The reactive force detector measures forces that are not subject to the same hysteresis effects as the tension detecting unit, thereby eliminating the source of measurement inaccuracy while maintaining structural stability through the same fastening mechanism
Solution Approach 2:
The patent creates a copy of the tension measurement function through reactive force detection. Instead of directly measuring tension which is affected by hysteresis, the system measures reactive forces that replicate the information needed for tension and meandering detection without being subject to the same measurement errors, thereby achieving accurate detection without compromising structural stability
Data Source
AI summary
A shape detection device capable of detecting meandering of a strip with high accuracy and a method thereof. The device includes a plurality of split rolls provided in a width direction of a rolling material; a table which guides the rolling material and which is rotatably supported; a fixing member supported by the table; torque detectors for separately detecting loads acting on both ends of the split rolls when the rolling material comes in contact with the split roll as moments; supporting arms of which one end rotatably supports the split roll and the other end is supported by the fixing member through the torque detectors; a meandering amount computing unit for computing a meandering amount of the rolling material using the moments detected by the torque detectors, and a plate shape computing unit for computing a plate shape of the rolling material using the moments and the meandering amount.