Spray Bar Inclination Layout for Faster Roll Extraction
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Solution Overview
Problem
In existing rolling mills, the extraction of rolls is hindered by the risk of hoses catching and the tedious process of disassembling the inclination device, which requires uncoupling the hydraulic cylinder and control lever to create clearance for roll extraction through the maintenance window.
Innovation Solution
The actuator of the device for adjusting the spray bar inclination is positioned on the side opposite to the maintenance window, allowing the spray bar to be uncoupled and extracted without disassembling the inclination device, using a removable connector that transmits torque between the tubular shaft and the supply tube, enabling the bar to be removed without affecting the hydraulic system's integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the hydraulic cylinder and control lever are uncoupled to create clearance for roll extraction, then the rolls can be extracted through the maintenance window, but the disassembly process becomes tedious and time-consuming
Solution Approach 1:
The inclination device is divided into separable components: the hydraulic cylinder assembly remains mounted on the stand, while the control lever is designed to be quickly detached and reattached. This segmentation allows the lever to be removed for roll extraction without affecting the hydraulic system, eliminating the need for complete disassembly while maintaining operational capability.
Solution Approach 2:
The control lever is extracted from the hydraulic system during maintenance operations. By removing only the control lever component rather than the entire hydraulic assembly, the patent enables roll extraction through the maintenance window without requiring disassembly of the hydraulic cylinder connections, thus reducing maintenance time while ensuring clear access.
2Adaptability or versatility
If the hydraulic cylinder and hoses are positioned on the access window side, then the inclination device can control the spray bar, but the hoses risk catching during roll extraction
Solution Approach 1:
The control lever is extracted or removed from the hydraulic system during roll extraction operations. This allows the hydraulic cylinder and hoses to remain stationary and mounted on the stand without interfering with roll removal, eliminating the entanglement risk while preserving the inclination control functionality when the lever is reattached.
Solution Approach 2:
The system transitions between two states: during normal operation, the control lever is connected to enable spray bar inclination control; during roll extraction, the lever is detached to clear the maintenance window path. This dynamic reconfiguration allows the same system to serve different functions without compromising reliability.
3Productivity
If the spray bar is extracted through the maintenance window, then roll replacement is facilitated, but the inclination device must be disassembled creating additional complexity
Solution Approach 1:
The inclination device is segmented into the hydraulic cylinder assembly (remaining mounted) and the control lever (removed during maintenance). This segmentation allows the spray bar to be extracted through the maintenance window with minimal disassembly, as only the control lever needs to be detached rather than the entire inclination mechanism.
Solution Approach 2:
The control lever is designed with quick-connect features that allow for rapid attachment and detachment. This preliminary design consideration enables maintenance personnel to quickly remove the lever before roll extraction and rapidly reattach it afterward, minimizing the impact of the disassembly/reatsembly process on overall productivity.
Data Source
AI summary
A rolling mill, in particular a cold rolling mill, including: rolls or even sets of rollers comprising at least one pair of work rolls capable of defining a roll gap of a strip to be rolled, at least one bar for spraying a lubricating and/or cooling fluid, disposed near the plane of the strip to be rolled, a stand inside of which the rolls are arranged, at least one device for adjusting the inclination of the at least one bar comprising an actuator, such as a hydraulic cylinder configured to change the inclination of the bar around the pivot axis. The actuator of the device for adjusting the inclination is arranged, on the second side of the stand, opposite to the first side of the maintenance window.