Removable Hand Guard for Drilling Rig Tongs
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Solution Overview
Problem
Existing hand guards for drilling rig hand tongs are difficult to install and remove, and they only fit specific types of handles, failing to provide effective and versatile protection for workers from hand crushing accidents.
Innovation Solution
A removable hand guard with a resilient body and tabs that can be easily secured to the tong handle using locks and fasteners, featuring a slot for a secondary handle to assist in maneuvering the tongs, made from materials like metal, fiber composite, or plastic, allowing for retrofitting on existing hand tongs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing hand guards are used to protect workers from hand crushing, then safety is improved, but the hand guards are difficult to install and remove and only fit specific types of handles
Solution Approach 1:
The hand guard is divided into a body portion and separate tabs that can be independently positioned. The tabs extend from the body and can be positioned behind handle boundaries while the body remains in front, allowing modular installation and removal without requiring complete disassembly of the entire guard structure.
Solution Approach 2:
The hand guard design with tabs that can be positioned behind various handle boundaries makes it compatible with different types of tong handles. This universal design allows the same hand guard structure to fit multiple handle types, eliminating the limitation of fitting only specific handle types while maintaining safety protection.
2Reliability
If existing hand guards are used to protect workers from hand crushing, then safety is improved, but the hand guards only fit specific types of handles reducing versatility
Solution Approach 1:
The hand guard design with tabs that can be positioned behind various handle boundaries makes it compatible with different types of tong handles. This universal design allows the same hand guard structure to fit multiple handle types, eliminating the limitation of fitting only specific handle types while maintaining safety protection.
Solution Approach 2:
The hand guard structure allows dynamic positioning of tabs relative to the handle boundaries. The tabs can be adjusted to different positions behind various handle boundaries, enabling the hand guard to adapt to different handle types and configurations, thereby improving versatility while maintaining safety.
3Reliability
If a hand guard with tabs positioned behind handle boundaries is used, then protection coverage is improved, but the structure becomes more complex
Solution Approach 1:
The hand guard is divided into a body portion and separate tabs that can be independently positioned. The tabs extend from the body and can be positioned behind handle boundaries while the body remains in front, allowing modular installation and removal without requiring complete disassembly of the entire guard structure.
Solution Approach 2:
The tabs are integrated as extensions of the hand guard body, with the tabs nested within or extending from the body structure. This nesting approach allows the tabs to be positioned behind handle boundaries while maintaining a compact overall structure, improving protection coverage without significantly increasing structural complexity.
Data Source
AI summary
A removable hand guard is provided for installation on drilling rig hand tongs and used to protect the hands of workers from being accidentally crushed when gripping the tong handle. The hand guard can include resilient body and tabs, which allow the guard to be positioned on the tong handle. The hand guard can be locked into place using locks and fasteners. The hand guard can include a slot, which can form a secondary handle to be used by a second worker to maneuver the tongs.