Slide Gate Rib Structure for Lower Stress Concentration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional slide gates experience stress concentration and voids at the junctions of reinforcement ribs due to the monolithic casting process, leading to defects and reduced durability in fluid flow control applications.
Innovation Solution
A slide gate design featuring a gate body with an exterior rib frame and an interior annular rib grid, where the inner annular rib is floating and not connected to other ribs, allowing for unreinforced spaces to deflect while the exterior rib frame and connector ribs provide reinforcement, dispersing stress across a circular geometry to minimize deflection and prevent stress concentration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a conventional grid pattern of intersecting reinforcement ribs is used, then the gate body receives reinforcement, but stress concentrates at the numerous junctions between ribs
Solution Approach 1:
The reinforcement rib structure is segmented into two distinct components: an exterior rib frame and an interior rib grid. This segmentation separates the load-bearing functions, allowing the exterior frame to handle primary stresses while the interior grid provides secondary reinforcement, thereby eliminating stress concentration at multiple intersecting junctions.
Solution Approach 2:
The interior rib grid is extracted as a separate conceptual element from the traditional monolithic rib structure. By positioning the interior grid within the boundary of the exterior frame rather than having it intersect extensively, the design removes the harmful stress concentration effect while preserving the reinforcement benefit.
2Stability of the object's composition
If ribs are cast monolithically with the gate body, then the structure is integrated, but voids and defects develop at the numerous junctions during casting
Solution Approach 1:
The monolithic casting is segmented into the exterior rib frame and interior rib grid as distinct structural zones. This segmentation reduces the number of complex junctions that would form during casting, thereby minimizing voids and defects while maintaining overall structural integration through the coordinated arrangement of the two rib systems.
Solution Approach 2:
Different regions of the gate body receive different reinforcement qualities: the exterior rib frame provides primary structural support with fewer, simpler junctions suitable for monolithic casting, while the interior rib grid provides secondary reinforcement within the bounded area, reducing the need for extensive junctions and associated casting defects.
3Strength
If multiple intersecting reinforcement ribs are used, then the gate body is reinforced, but deflection increases due to stress concentration
Solution Approach 1:
The reinforcement system is divided into an exterior rib frame that provides the primary structural skeleton for deflection control, and an interior rib grid that provides additional reinforcement without creating stress concentration junctions. This segmentation allows each component to optimize its function: the frame resists bending moments while the grid distributes localized loads.
Solution Approach 2:
The exterior rib frame is configured with curved geometry rather than straight intersecting lines. This curvature eliminates sharp junctions where stress would concentrate, allowing the frame to gracefully distribute stresses along its curved path, thereby reducing deflection while maintaining reinforcement effectiveness.
Data Source
AI summary
Example aspects of a slide gate, a slide gate assembly, and a method of using a slide gate assembly are disclosed. The slide gate can comprise a gate body defining a first face, a second face, and a sliding groove; and a plurality of reinforcement ribs extending from the second face, the reinforcement ribs comprising: an exterior rib frame; and an interior rib grid comprising an annular reinforcement rib, wherein the interior rib grid is oriented within a boundary of the exterior rib frame.