Rock Bolt Nut With Recessed Marking Face Against Driver Damage
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Solution Overview
Problem
Existing rock bolts face issues with product information, such as bolt ID, material traceability, and manufacturer details being damaged during installation due to exposure on the external face, making them unreadable post-installation.
Innovation Solution
A rock bolt design featuring a nut with an axially recessed display face that is protected from the bolt driver tool, allowing relevant information to be visible and preserved by positioning the recessed portion centrally on the nut, ensuring it is not contacted by the driver socket during installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If product information is stamped on the external exposed face of the locking nut, then the information is accessible and visible, but the information becomes damaged and unreadable during bolt installation
Solution Approach 1:
The display face is recessed axially relative to the rearward exposed face of the nut, creating a dimensional offset that positions the information-bearing surface out of the contact path of the driver tool. This axial recessing moves the information display area to a different spatial dimension (depth/axial position) where it is protected from the harmful impact forces applied during installation.
2Loss of information
If the display face is recessed axially relative to the rearward exposed face of the nut, then the information is protected from damage during installation, but the information may be less accessible to personnel
Solution Approach 1:
The recessed display face creates an axial offset that protects information while maintaining visibility. The recessed portion is positioned centrally on the nut with the display face oriented to face axially rearward, allowing light to reflect off the display face and making the information readable from a distance without requiring physical contact or close proximity that would compromise protection.
Data Source
AI summary
A rock bolt for installation within a bore formed in rock strata having an elongate shaft with the leading end for installation into the bore and a trailing end projecting from an open end of the bore. A locking nut is threadably attached to the trailing end and is arranged to display product information and the like at a display face. The display face is recessed axially into the nut to provide protection against damage to the display face that may otherwise render the information unreadable.