L-Shaped Bolt Fastening With Fall-Prevention Washer for Grating Mounts
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Solution Overview
Problem
In industrial plants, installing anti-vibration devices on equipment without lifting the substructure is challenging, as it requires a special fastening structure to prevent bolts from falling below the substructure.
Innovation Solution
A bolt fastening structure using an L-shaped bolt and a fall prevention washer, which allows the anti-vibration device to be installed on a substructure without lifting it, preventing the bolt from falling below the substructure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a bolt is inserted into a hole of a substructure to fasten an anti-vibration device, then the anti-vibration device can be installed on the substructure, but the bolt may fall below the substructure during work
Solution Approach 1:
A fall prevention washer is introduced as an intermediary component between the bolt and the substructure. The washer has a through-hole that receives the bolt, and its outer diameter is larger than the substructure hole diameter, preventing the bolt from falling below the substructure while allowing easy insertion and fastening operations.
2Reliability
If the substructure is lifted to install an anti-vibration device, then the device can be fixedly installed, but the installation process becomes complex and time-consuming
Solution Approach 1:
The fastening function is segmented into two independent parts: the L-shaped bolt for fastening the anti-vibration device to the substructure, and the fall prevention washer for preventing bolt loss. This segmentation allows the bolt to be inserted from above without lifting the substructure, simplifying the installation process while maintaining reliability.
Solution Approach 2:
The fall prevention washer acts as a mediator that enables the bolt to be securely fastened without requiring the substructure to be lifted. The washer's design with outer diameter larger than the substructure hole diameter provides a stopping surface that prevents bolt loss, eliminating the need for complex lifting and bracket coupling operations.
3Reliability
If a special fastening structure is used to prevent bolt loss, then the bolt remains secure, but the fastening structure becomes more complex
Solution Approach 1:
The fall prevention washer serves as a simple intermediary component that provides bolt retention functionality. Its straightforward design—a ring-shaped washer with a through-hole and an outer diameter larger than the substructure hole—prevents bolt loss without introducing complex mechanical structures, maintaining ease of manufacture and installation.
Data Source
AI summary
Disclosed are a bolt fastening structure which is couplable and releasable at one side and includes a fall prevention washer capable of preventing a bolt from falling, and an anti-vibration device including the same. By using an L-shaped bolt having a bent portion, even without assistance from below a substructure such as a grating plate, an operator above the substructure can install an anti-vibration device on equipment alone. In addition, by using a fall prevention washer coupled to an L-shaped bolt, a bolt can be prevented from falling below a substructure when working on the substructure.