Decoupled Rolling Stand Assembly for Foundation Vibration Isolation
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Solution Overview
Problem
Conventional rolling mills, especially those designed for flexible rolling, experience significant vibration issues due to high mass forces and changing roll gap geometries, leading to foundation damage and environmental noise concerns, as existing damping measures are insufficient to manage the variable vibration frequencies.
Innovation Solution
The implementation of a spring-damping system between the rolling stand and the foundation, potentially including a flywheel and visco-elastic elements like coil springs and hydraulic dampers, to decouple the rolling mill components and adjust the natural frequency, thereby reducing vibration emissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the rolling mill is directly mounted on the foundation, then the structural stability is improved, but vibration emissions increase causing foundation damage
Solution Approach 1:
A spring-damping system is introduced as an intermediary element between the rolling mill and the foundation. This mediator absorbs and dampens vibration emissions while maintaining the structural connection, preventing direct transmission of harmful vibrations to the foundation.
Solution Approach 2:
The natural frequency of the rolling mill system is adjusted by modifying the mass parameters (adding flywheel mass) and damping characteristics. This parameter change allows the system to operate at frequencies that minimize resonance with the foundation, reducing vibration-induced damage.
2Object-generated harmful factors
If conventional damping measures are used, then some vibration reduction is achieved, but they are insufficient for variable vibration frequencies
Solution Approach 1:
The damping system is designed with dynamic characteristics that allow it to adapt to varying vibration frequencies. The spring-damping combination provides frequency-dependent damping behavior, maintaining effectiveness across the range of frequencies generated during flexible rolling operations.
3Object-generated harmful factors
If additional flywheel mass is added, then the natural frequency is adjusted to reduce vibrations, but the device complexity increases
Solution Approach 1:
The flywheel mass is integrated with the existing rolling mill structure, merging the vibration control function with the operational mass of the system. This combination approach adds the necessary mass for frequency adjustment without requiring a completely separate vibration control system.
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
This solution effectively reduces vibration-induced damage to the foundation and minimizes noise pollution by aligning the rolling mill's natural frequency with the vibration frequencies, enhancing the structural integrity and operational environment.
Implementation Method 1
spring-damping system
Implementation Method 2
spring-damping system
Implementation Method 3
visco-elastic elements like coil springs and hydraulic dampers
Implementation Method 4
additional flywheel mass... significantly increases the dead mass of the rolling mill and reduces its natural frequency
Implementation Method 5
aligning the rolling mill's natural frequency with the vibration frequencies
Data Source
AI summary
The invention relates to a rolling assembly, in particular a rolling mill (20), comprising at least one roll stand (21) which is erected on a foundation (30). The invention is characterized in that the roll stand is decoupled from the foundation (30) by means of at least one spring damping system (10).