Roll Nip Sensor Dynamic Tracking for Horizontal Displacement
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Solution Overview
Problem
Existing roll gap measuring devices are unable to maintain measurement accuracy when work rolls are displaced in or against the rolling direction, leading to increased inaccuracy due to shifts in the operating point of spring-loaded mechanisms.
Innovation Solution
A roll gap sensor with an initialization device that detects displacement in the rolling direction and a displacement device to reposition the sensor, ensuring a suitable relative position is maintained, using mechanical, optical, or magnetic sensors for accurate detection and synchronization with the work rolls' movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a spring-loaded measuring device is used to detect roll gap height, then the measurement mechanism can maintain contact with the work rolls, but the operating point of the spring shifts when work rolls are displaced horizontally, leading to measurement inaccuracy
Solution Approach 1:
The patent introduces a dynamic adjustment mechanism that allows the roll gap sensor to be repositioned horizontally in response to work roll displacement. The sensor mounting structure includes adjustable components that enable the sensor to track the horizontal movement of work rolls, maintaining the suitable relative position required for accurate measurement while preserving the spring-loaded contact mechanism for vertical gap detection
Solution Approach 2:
The patent replaces the static mechanical spring-loaded mechanism with a hybrid system that incorporates electrical or optical sensing components. This substitution allows the measurement system to detect roll gap height without relying solely on the mechanical operating point of the spring, thereby eliminating measurement inaccuracy caused by horizontal displacements while maintaining contact-based measurement capability
2Device complexity
If the roll gap sensor is fixed at a specific position, then the device structure is simple, but the sensor cannot maintain suitable relative position when work rolls are displaced in rolling direction
Solution Approach 1:
The patent implements a dynamic positioning system where the roll gap sensor can be repositioned horizontally along the work roll surface. The sensor mounting structure includes adjustable components that enable the sensor to track the horizontal movement of work rolls, maintaining the suitable relative position required for accurate measurement. This dynamic adjustment ensures measurement precision is preserved even when work rolls are displaced in the rolling direction
Solution Approach 2:
The patent incorporates a feedback mechanism that monitors the horizontal position of work rolls and automatically adjusts the sensor position accordingly. This feedback system ensures the sensor maintains its suitable relative position to the work rolls, preserving measurement accuracy without requiring complex manual repositioning or overly complicated mechanical structures
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
Ensures high measurement accuracy even when work rolls are displaced in or against the rolling direction, as the sensor is dynamically adjusted to maintain the optimal relative position, eliminating measurement inaccuracies caused by horizontal movements.
Implementation Method 1
The measuring head includes two electromagnetic measuring systems, which each record the distance between their own reference plane and the assigned shaft attachment, which acts as a magnet.
Implementation Method 2
an initialization device for detecting a displacement of the work rolls in or counter to the rolling direction from a starting position to an end position
Implementation Method 3
a roll gap sensor displacement device for displacing the roll gap sensor in accordance with the displacement of the work rolls
Data Source
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AI summary
The invention relates to a measuring device, a rolling stand and a method for detecting the level of a roll nip between two working rolls in the rolling stand. In order to ensure high measuring accuracy of a roll nip sensor even in the event of a horizontal displacement of the working rolls in or counter to the rolling direction, it is proposed according to the invention for the roll nip sensor 110 to follow the working rolls in the event of a displacement in or counter to the rolling direction, such that, even in a new or displaced end position of the working rolls, a suitable relative position, which is necessary for high measuring accuracy, between the roll nip sensor and the working rolls is ensured.