L-Shaped Bolt Fastening Structure for Irregular Grating Holes
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Solution Overview
Problem
Existing bolt fastening methods for grating plates and steel pads with irregularly sized holes are inefficient and pose safety risks, as they require multiple workers to tighten bolts from underneath the structure, increasing the risk of accidents and requiring frequent replacement of damaged grating plates.
Innovation Solution
An L-shaped bolt fastening structure using a hole guard, which includes a support portion, a hole insertion portion, and a bolt hole, allowing the L-shaped bolt to be securely fastened to the hole guard, even in holes with irregular sizes, and featuring a fall prevention washer to prevent the bolt from falling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If brackets are used to fasten equipment to grating plates, then equipment can be fixed to the grating plate, but multiple workers are required to tighten bolts from underneath, increasing work time and safety risks
Solution Approach 1:
The invention inverts the traditional fastening approach by having the L-shaped bolt pass through the grating plate from below, with the head on the lower side and the nut tightened from above. This allows workers to tighten bolts from the accessible upper side rather than reaching underneath the grating plate, eliminating the need for multiple workers and reducing safety risks.
2Adaptability or versatility
If grating plates are installed at fixed heights to form shelf-like structures, then equipment can be mounted, but workers face safety risks when working underneath to tighten fasteners
Solution Approach 1:
The fastening method is inverted so that the L-shaped bolt extends from below the grating plate upward, with the nut tightening surface facing upward. This allows all fastening operations to be performed from the accessible upper side, eliminating the need for workers to position themselves underneath the elevated grating plate structure and thereby removing the safety hazard.
3Productivity
If bolts are fastened directly to holes in grating plates, then fastening can be performed, but damaged or irregularly sized holes require replacement of the entire grating plate
Solution Approach 1:
The invention introduces an intermediary component - the L-shaped bolt with its distinctive geometry - that mediates between the fastening requirement and the grating plate hole. The L-shaped configuration allows the bolt to be inserted through irregular or damaged holes from below, while the head and arm provide stable engagement points for tightening from above, preserving the grating plate and avoiding replacement.
4Adaptability or versatility
If typical size bolts are used for grating plates with various hole sizes, then standard fasteners can be applied, but bolts cannot be mounted to correspond to various irregular hole sizes
Solution Approach 1:
The L-shaped bolt is designed as a universal fastening component that can accommodate various hole sizes and configurations in grating plates. The L-shape with its vertical and horizontal portions, along with the head and arm, creates a multi-functional fastener that adapts to different hole dimensions and positions, eliminating the need for multiple specialized bolt types while maintaining simple fastening operations.
Data Source
AI summary
Provided is an L-shaped bolt fastening structure using a hole guard, which is capable of being installed in holes having various sizes. Since an L-shaped bolt is fastened in a state in which a hole guard is mounted on a lower structure, fastening using the L-shaped bolt is applicable to a steel pad having a large hole or a large long hole or a grating in which holes are damaged and have irregular sizes. Since bolts can be installed in holes having various sizes in one direction using the hole guard and the L-shaped bolt, the L-shaped bolt fastening structure using the hole guard has a wide range of applications in a floor in an industrial site and as a hook hanger or the like of an H-beam structure, a ceiling, or a wall structure of a construction site.