Rock Bolt Nut With Recessed Display Face for Traceable Installation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing rock bolts suffer from information on the locking nut being damaged during installation, making it unreadable due to exposure to the bolt driver tool.
Innovation Solution
A rock bolt design featuring a nut with a recessed portion that protects the display face from the driver tool, allowing relevant information such as ID, material traceability, and logos to remain visible and intact by positioning the display face axially recessed relative to the rearwardmost exposed face, ensuring it is not contacted by the driver socket.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the display face is positioned on the exposed face of the nut, then the information is easily accessible, but the information becomes damaged by the bolt driver tool during installation
Solution Approach 1:
The display face is moved from the external exposed surface to an axially recessed position on the nut, changing its spatial dimension relative to the driver tool path. This recessed positioning allows the information to remain accessible for reading while being protected from damage during the hammering installation process, as the driver socket contacts only the outer exposed face.
2Reliability
If the recessed portion diameter is reduced to protect the display face, then the driver socket cannot contact the display face, but the nut structure becomes more complex
Solution Approach 1:
The nut is designed with a localized recessed portion that contains the display face, while the rest of the nut maintains its standard structure for threading and driver socket engagement. This localized modification minimizes structural complexity changes while providing the necessary protection for the display face during installation.
3Reliability
If the display face is recessed axially, then the information is protected from driver tool damage, but the driver socket contact area is reduced
Solution Approach 1:
The nut surface is segmented into distinct functional zones: an outer annular exposed face for driver socket contact and hammering engagement, and an inner axially recessed display face for information display. This segmentation allows the driver socket to effectively contact the exposed face while the recessed display face remains protected from damage.
Data Source
AI summary
A rock bolt arranged for installation within a bore formed in rock strata includes 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.