Seismic Equipment Rack Frame With Weld Stud Modular Reinforcement
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Solution Overview
Problem
Conventional electronic equipment racks require extensive welding, which is labor-intensive and prone to quality issues due to skilled labor shortages and heat-generated assembly tolerances, especially during seismic events when they are subjected to multiple directional accelerations.
Innovation Solution
The use of closed tube sections joined through limited welding with threaded weld studs, which reduces the number of welds and employs structural members fastened via these studs, along with multiple strengthening gussets to secure additional parts like doors and panels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional open-section frame members are welded together extensively, then structural integrity is achieved, but labor cost increases and assembly tolerance deteriorates due to heat generation
Solution Approach 1:
The frame is divided into modular closed-section components that can be pre-assembled and then connected through limited welding at junction points, reducing cumulative heat exposure and maintaining assembly tolerance while preserving structural integrity through the modular design
Solution Approach 2:
The invention combines closed-section structural members with reinforcement elements to create a composite framework that achieves enhanced structural integrity through the synergistic arrangement of components rather than relying solely on extensive welding
2Strength
If extensive welding is used to assemble frame members, then structural strength is improved, but labor cost and complexity increase due to skilled labor requirements
Solution Approach 1:
The framework is segmented into standardized closed-section modules that can be manufactured independently and assembled through minimal welding operations, reducing the overall welding complexity and skilled labor requirements while maintaining structural strength
Solution Approach 2:
Closed-section components are pre-assembled and pre-positioned before final welding operations, allowing for better alignment and reduced welding complexity in the field, thereby lowering skilled labor requirements and assembly complexity
3Strength
If welded connections are used for all structural members, then joint strength is achieved, but heat generation negatively impacts assembly tolerances
Solution Approach 1:
The structure is divided into segments connected by a hybrid joining method where only critical junction points require welding for joint strength, while non-critical connections use mechanical fastening or other non-thermal methods to preserve assembly tolerance
Solution Approach 2:
The invention introduces intermediate connection elements or transition components that allow joining of structural members without direct welding, thereby achieving joint strength through intermediary mechanisms while avoiding heat generation that would compromise assembly tolerance
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 approach minimizes labor and assembly tolerances, enhances structural integrity, and satisfies seismic requirements with fewer welds, ensuring efficient and robust electronic equipment rack construction.
Implementation Method 1
a frame comprising a plurality of horizontal portions welded to a plurality of vertical portions, and a plurality of weld studs on surfaces of at least one of one or more of the plurality of vertical portions and one or more of the plurality of horizontal portions
Data Source
AI summary
An electronic equipment rack includes a frame including a plurality of horizontal portions welded to a plurality of vertical portions, and a plurality of weld studs on surfaces of at least one of one or more of the plurality of vertical portions and one or more of the plurality of horizontal portions. One or more additional portions are attached to the frame via one or more of the plurality of weld studs.