Sliding Gate Contact Pressure Control Mechanism
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Solution Overview
Problem
The sliding gate device lacks a reliable mechanism to prevent unintended release of contact pressure during switching between communication and non-communication states, leading to potential leakage and operational errors.
Innovation Solution
A contact pressure control mechanism featuring a support bar member, a joining block tool, and a spring member that allows for controlled application and release of contact pressure between the fixed and sliding plates, ensuring the contact pressure is maintained during operation by coordinating the movement of the slider case and support bar member through a joining block tool.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the contact pressure bar is moved forward and backward with use of the cylinder to switch between communication and non-communication of the through holes, then the flow rate of molten steel is controlled, but the contact pressure may be erroneously released causing leakage
Solution Approach 1:
The device separates the contact pressure control function from the sliding plate control function. The contact pressure bar is independently controllable from the sliding plate, allowing the sliding plate to move for flow rate control while the contact pressure bar maintains constant pressure on the sealing surface, preventing erroneous pressure release during operation
Solution Approach 2:
The contact pressure bar acts as an intermediary element between the cylinder and the sealing interface. It transmits and maintains contact pressure independently of the sliding plate position, ensuring that the sealing function is decoupled from the flow control function
2Ease of repair
If the contact pressure bar is moved forward with use of the cylinder to replace the plate, then the contact pressure is released for plate replacement, but the mechanism cannot distinguish between plate replacement and normal switching operations
Solution Approach 1:
The system uses dynamic positioning of the sliding plate to indicate operational state. During normal operation, the sliding plate is positioned to allow flow; during plate replacement, it is positioned to block flow. This dynamic state provides visual and functional feedback to operators, making the purpose of each operation clear without requiring additional control mechanisms
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 configuration ensures reliable control over contact pressure application and release, preventing unintended pressure loss during switching, thus maintaining efficient operation and preventing leakage, and simplifies the switching process between communication and non-communication states.
Implementation Method 1
a spring member configured to generate a force for applying a contact pressure between the fixed plate and the sliding plate in a case where the support bar member has been moved relative to the fixed plate in conjunction with the slider case
Data Source
AI summary
A sliding gate device includes a fixed plate fixed to a molten steel container, a sliding plate for opening/closing a nozzle hole, a sliding device moving a case holding the sliding plate, and a contact pressure control mechanism switching between a contact pressure applied state and a no-contact-pressure applied state for the fixed plate and the sliding plate. The contact pressure control mechanism has a support bar member moving relative to the fixed plate, a joining block tool switching between a joined state where the support bar member and the case cooperate with each other, and a joining-released state where the support bar member and the case do not cooperate with each other, and a spring member generating a force applying a contact pressure according to a position of the support bar member.