Grate Grounding Clamp for Weld-Free Bar Attachment
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Solution Overview
Problem
Grating structures in various applications are at risk of being energized by electrical discharges and stray current, leading to corrosion and safety hazards, with no convenient and reliable means of grounding available.
Innovation Solution
A grounding device comprising a top plate, bottom plate, cap, and fastener system that securely attaches to adjacent bearing bars of a grate, allowing for easy installation of a grounding wire to neutralize electrical charges, and optionally secures the grate to a surrounding structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If welding is used to ground the grate, then grounding reliability is improved, but ease of installation deteriorates
Solution Approach 1:
The patent introduces a grounding device as an intermediary component that clamps onto the bearing bars without welding. This device includes a body with curved ends that engage the bearing bars, a grounding wire attachment point, and a fastening mechanism, serving as a mediator between the grate structure and the grounding wire.
Solution Approach 2:
The grounding device is segmented into distinct functional components: the body that engages the bearing bars, the grounding wire attachment mechanism, and the fastening system. This segmentation allows the device to be installed independently without modifying the grate structure through welding.
2Reliability
If a grounding device is added to the grate, then grounding capability is improved, but device complexity increases
Solution Approach 1:
The grounding device body serves multiple functions: it engages the bearing bars through curved ends, provides structural support for the grounding wire attachment, and includes integrated fastening mechanisms. This multi-functionality reduces the need for separate components.
Solution Approach 2:
The patent merges the grounding wire attachment mechanism with the bearing bar engagement structure into a single integrated body. The curved ends that engage the bars are part of the same component that holds the grounding wire, combining functions that could have been separate.
3Ease of operation
If curved ends are designed to engage bearing bars, then ease of installation is improved, but manufacturing precision requirements increase
Solution Approach 1:
The curved ends are designed with specific geometric properties only at the engagement points with the bearing bars, while other portions of the device can have less precise geometry. This local quality approach concentrates manufacturing precision requirements only where needed for proper engagement.
Solution Approach 2:
The use of curved ends provides a geometric form that naturally conforms to the cylindrical shape of the bearing bars. This curvature allows for easier engagement and accommodation of manufacturing tolerances compared to flat or angular contact surfaces.
Data Source
AI summary
A grounding device, including a top plate including a central portion and a plurality of curved ends, the central portion of the top plate having a hole extending therethrough, a bottom plate including a central portion and a plurality of curved ends, the central portion of the bottom plate having a hole extending therethrough, a cap including a hole and a curved end adapted to retain a grounding wire, and a fastener extending through the holes of the top plate, the bottom plate, and the cap.