Grain Bin Stiffener Sealing With Exterior-Inserted Stud Bolts
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Solution Overview
Problem
Conventional methods for connecting external stiffeners to grain bin sidewalls fail to effectively prevent moisture ingress, leading to grain spoilage and corrosion, especially due to gaps between the stiffener and the sidewall, and complicate the assembly process.
Innovation Solution
A double-ended stud bolt system with a sealing member, such as a metallic washer with a compressible component, is used to form a durable seal between the stiffener and the grain bin sidewall, regardless of gaps, by tightening an inner nut from within the bin to pull the stud bolt toward the exterior surface and an outer nut to secure the stiffener, preventing water entry between laminated sheets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional bolts are inserted from the interior of the grain bin outward through the sidewall and stiffener, then the stiffener is connected to the sidewall, but water can travel between the stiffener and sidewall and enter the grain bin
Solution Approach 1:
The patent inverts the conventional bolt insertion direction by inserting bolts from the exterior of the grain bin inward through the stiffener and sidewall, rather than from the interior outward. This inversion allows the bolt head to be positioned on the exterior where it can be sealed against the stiffener, preventing water from traveling along the bolt shaft into the bin. The sealing member is applied at the bolt head location on the exterior surface, creating an effective barrier against moisture ingress while maintaining structural connection strength.
Solution Approach 2:
The patent introduces a sealing member as an intermediary element between the bolt head and the exterior surface of the grain bin (stiffener or sidewall). This sealing member, which can be a gasket, washer, or sealant, creates a water-tight barrier that prevents moisture from penetrating along the bolt shaft into the bin. The intermediary sealing member effectively blocks the harmful pathway for water while allowing the bolt to maintain its structural connection function.
2Strength
If external stiffeners are added to provide additional strength and rigidity, then the grain bin structural integrity is improved, but the assembly process becomes more complicated
Solution Approach 1:
The patent applies preliminary action by pre-attaching sealing members to the bolt heads before insertion, and by designing the bolt system to be inserted from the exterior in a single continuous operation. The stiffener is positioned and secured in one assembly sequence without requiring subsequent sealing operations or complex multi-step procedures. This preliminary preparation of sealing components and streamlined insertion process significantly reduces assembly complexity while maintaining structural rigidity.
Solution Approach 2:
The patent creates a universal bolt system that simultaneously achieves multiple functions: structural connection between stiffener and sidewall, moisture sealing, and simplified assembly. The exterior-insertion bolt design with pre-applied sealing members serves as a multi-functional solution that replaces the need for separate connection and sealing operations, thereby reducing overall assembly complexity while providing the required structural rigidity.
3Strength
If laminated sheets are used to provide additional strength, then the grain bin rigidity is improved, but water can travel between the laminated sheets and seep into the grain bin
Solution Approach 1:
The patent uses sealing members as intermediary elements at the bolt penetration points through the laminated sidewall structure. These sealing members, positioned at the exterior surface where bolts enter, create water-tight barriers that prevent moisture from traveling between the laminated sheets into the bin. The intermediaries effectively block the capillary pathways that water would otherwise use to infiltrate through the layered structure.
Solution Approach 2:
By inverting the bolt insertion direction to enter from the exterior, the patent positions the sealing function at the exterior surface rather than the interior. This inversion allows sealing members to be applied where water first contacts the structure, preventing infiltration at the source before water can travel between laminated sheets. The sealing action occurs at the external interface, blocking moisture pathways before they can penetrate the layered wall structure.
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 solution provides a robust, long-term seal that prevents moisture ingress, reduces grain spoilage, and simplifies the assembly process while maintaining the structural integrity and longevity of the grain bin.
Implementation Method 1
a compressible member, such as a rubber, plastic, composite or other washer formed of a non-metallic or other material that facilitates a seal
Implementation Method 2
a compressible member, such as a rubber, plastic, composite or other washer formed of a non-metallic or other material that facilitates a seal
Data Source
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AI summary
A system of connecting a stiffener to the sidewall of a grain bin using a stud bolt having a first threaded end, a second threaded end and a feature positioned between the first end and a second end. A sealing member is positioned over the first end of the stud bolt, which in one case is a metallic washer with an affixed compressible sealing member. The first end of the stud bolt is inserted into a hole in the sidewall and an inner nut is placed over the first end inside the sidewall. As the inner nut is tightened, the feature is pulled toward the exterior surface of the grain bin thereby causing the sealing member to form a seal with the exterior surface of the grain bin. The second end of the stud bolt is inserted into a hole in the stiffener which is tightened onto the stud bolt.