Rolling Stand Brush Positioning Mechanism for Vibration Control
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Solution Overview
Problem
Existing rolling stands for metal products suffer from vibrations and bulkiness in their positioning devices, leading to inaccurate cleaning and increased maintenance difficulties, as well as a lack of adaptability to varying roll diameters due to mechanical complexity and wear.
Innovation Solution
A compact positioning device with a pivoting support body and actuation member, where the brush is mounted on a support structure, allowing precise and adjustable positioning with minimal vibrations, using a linear actuator and elastic elements to control brush contact with the rolling roll, and an adjustment mechanism for varying diameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a mobile support body with hydraulic actuators is used to position the cleaning unit, then the brush can be moved into contact with the rolling roll, but the device becomes bulky and generates vibrations due to mechanical plays
Solution Approach 1:
The patent replaces the traditional hydraulic actuator system with a motor-driven mechanism. The motor (220) drives a screw (221) that rotates the support body (210) around the rolling roll (120), eliminating hydraulic components and reducing mechanical complexity while maintaining positioning accuracy.
Solution Approach 2:
The support body (210) is designed to rotate directly around the rolling roll (120) rather than moving linearly on a separate slide. This merging of the support body's motion path with the rolling roll's axis reduces the number of mechanical interfaces and eliminates plays between components.
2Ease of operation
If a radially movable slide is used to position the brush, then cleaning contact can be achieved, but vibrations are generated due to plays between support frame and guides
Solution Approach 1:
The support body (210) is designed to rotate dynamically around the rolling roll (120) rather than moving radially on a fixed slide. This rotational motion eliminates the need for radial guides and support frames, removing the source of mechanical plays and vibrations.
3Measurement precision
If traditional positioning devices with many mechanical elements are used, then brush positioning is achievable, but accuracy deteriorates due to strong plays in the mechanisms
Solution Approach 1:
The patent extracts and removes the radial slide, support frame, and radial guides from the system. By taking out these unnecessary mechanical elements, the design eliminates the plays between components while maintaining simple and accurate positioning through direct rotation of the support body around the rolling roll.
4Volume of moving object
If a compact positioning device is designed, then size is reduced, but adaptability to different roll diameters may be limited
Solution Approach 1:
The support body (210) is designed to rotate around the rolling roll (120) at a variable distance, allowing adjustment to different roll diameters. The motor-driven screw mechanism (220, 221) enables dynamic positioning of the support body at optimal distances for various roll sizes, providing both compactness and adaptability.
Data Source
AI summary
Rolling stand comprising a support structure, a rolling roll mounted on the support structure, and a cleaning unit of the rolling roll, comprising at least a brush and a positioning device for the brush. The positioning device comprises a support body on which the brush is installed, a pivoting member associated to the support body and around which the support body is selectively rotatable, an actuation member mounted on a support pin and associated to the support body in order to move it between an “inactive” position, in which the brush is not in contact with said rolling roll, and an “operating” position, in which the brush is in contact with the rolling roll.