Continuous Casting Roll Unit Lubrication for Bearing Seal Protection
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Solution Overview
Problem
Roll line units in continuous casting plants face short service life due to extreme wear, high temperatures, corrosion, and inadequate lubrication, leading to frequent replacements and downtime.
Innovation Solution
A self-contained roll line unit with a rotatable roll mantle or roll body surface and a support housing containing a lubricant reservoir with an actuator that maintains lubricant levels, preventing water and contaminant ingress and accommodating volume fluctuations, ensuring continuous lubrication and reduced leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a sealed support housing with lubricant reservoir is used, then reliability is improved, but device complexity increases
Solution Approach 1:
The patent combines the bearing housing, seal support, and lubricant reservoir into a single integrated sealed support housing structure. This merging of components provides comprehensive protection against water and contaminants while maintaining adequate lubrication, thereby improving reliability without proportionally increasing device complexity.
Solution Approach 2:
The lubricant reservoir is designed to automatically supply lubricant to the bearing through fluid communication, eliminating the need for external lubrication systems or manual intervention. This self-service mechanism ensures continuous lubrication and extends service life while adding minimal structural complexity.
2Object-affected harmful factors
If lubricant is contained in a sealed housing, then protection against contaminants is improved, but volume fluctuations cause pressure issues
Solution Approach 1:
The patent incorporates an actuator that responds dynamically to volume changes in the lubricant reservoir. When lubricant volume fluctuates, the actuator moves to maintain pressure equilibrium, preventing pressure instability while preserving the sealed protection against contaminants.
Solution Approach 2:
The actuator functions as a feedback mechanism that automatically adjusts to volume fluctuations in the lubricant reservoir. This feedback system maintains pressure stability by compensating for volume changes, ensuring stable operation while the sealed housing continues to protect against contaminant ingress.
3Object-affected harmful factors
If seals are placed axially outward and inward of bearings, then protection is improved, but space for lubricant is limited
Solution Approach 1:
The patent positions the lubricant reservoir in a separate spatial dimension from the bearing cavity, connected through fluid communication. This dimensional separation allows seals to be placed both axially outward and inward of bearings for maximum protection, while the reservoir provides additional lubricant storage space without interfering with the sealed protection arrangement.
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
The solution extends the service life of roll line units, reduces maintenance and lubricant consumption, and minimizes downtime by maintaining effective lubrication and protecting bearings from wear and corrosion.
Implementation Method 1
The support housing comprises at least one cavity containing an amount of lubricant, which is located adjacent to the at least one seal located axially outward relative to the at least one bearing and/or at least one seal located axially inward relative to the at least one bearing
Implementation Method 2
The at least one lubricant reservoir comprises an actuator that is arranged to move when the volume of lubricant in the at least one cavity and/or the at least one lubricant reservoir increases
Data Source
AI summary
A roll line unit for a continuous casting apparatus includes a roll mantle or roll body surface rotatable relative to a support housing by means of bearing(s). The support housing has a seal(s) located axially outward relative to the at least one bearing and/or seal(s) located axially inward relative to the at least one bearing, and a lubrication system having lubricant reservoir(s) containing lubricant. The support housing has one or more cavities containing lubricant located adjacent to the seal disposed axially outward of the bearing(s) and/or the seal located axially inward of the bearing(s). The lubricant reservoir(s) is/are in fluid communication with the at least one cavity. An actuator within the lubricant reservoir(s) is arranged to move when the volume of lubricant increases in the cavity and/or the reservoir, and/or to push lubricant from the lubricant reservoir into the cavity when the amount of lubricant in the cavity decreases.