Wire Grip With Limiting Mechanism for Live-Wire Handling
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Solution Overview
Problem
Existing methods for cutting live electric wires between utility poles face issues such as accidental damage from swinging wire grips, complex structures, and the need to strip insulation films, which complicates the process and increases the risk of electrical leakage.
Innovation Solution
A wire grip design featuring an upper grasping part, a lower grasping part movable in a vertical direction, an arrow part, and a supporting body that pushes the arrow part with a screw, allowing for secure gripping without stripping insulation, and a live wire distributing tool with two wire grips connected to an extendable rod, enabling easy and secure grasping without stripping the insulation film.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the wire grip is rotatably connected to the extendable rod, then the wire grip can be easily attached and detached from the live wire, but the wire grip may swing inadvertently and hit the extendable rod or surrounding equipment causing damage
Solution Approach 1:
The patent applies preliminary anti-action by providing a limiting mechanism that prevents the wire grip from swinging beyond a predetermined angle range before actual damage can occur. The limit member is pre-positioned to constrain the rotational movement of the wire grip, counteracting the potential harmful swinging motion in advance.
Solution Approach 2:
The patent implements beforehand cushioning by introducing a limit member that acts as a mechanical stop, cushioning or preventing the harmful effect of excessive swinging. The limit member is positioned in advance to intercept any unintended rotational movement, preventing the wire grip from hitting the extendable rod or surrounding equipment.
2Device complexity
If the wire grip structure is simplified, then the device complexity is reduced, but the gripping reliability may be compromised
Solution Approach 1:
The wire grip is segmented into distinct functional components: an upper grasping part, a lower grasping part, and a limit member. This segmentation allows each component to perform its specific function efficiently while keeping the overall structure simple. The upper and lower grasping parts handle the gripping function, while the limit member handles the rotational constraint, avoiding the need for complex integrated mechanisms.
Solution Approach 2:
The patent extracts the rotational limiting function from the grasping mechanism itself, implementing it as a separate limit member. This extraction allows the grasping parts to remain simple while the limit member provides the necessary rotational constraint, maintaining both simplicity and reliability.
3Force
If the wire grip is designed to grip the live wire securely, then the gripping force is increased, but the wire grip may damage the insulation film of the live wire
Solution Approach 1:
The grasping parts are designed with specific local qualities suitable for gripping insulated wires. The contact surfaces of the upper and lower grasping parts are shaped to distribute the gripping force evenly across the wire surface, preventing localized stress concentrations that could damage the insulation film while maintaining sufficient overall gripping force.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution provides a simpler, secure, and efficient method for gripping live electric wires, reducing the risk of damage and electrical leakage by eliminating the need to strip insulation films and improving workability with fewer components.
Implementation Method 1
a supporting body which pushes the arrow part with a screw screwed with a lower supporting part provided at a bottom part of the base and extending in a longitudinal direction of the base
Data Source
AI summary
The wire grip includes an upper grasping part provided at a base for grasping an electric wire from above; a lower grasping part arranged to face the upper grasping part with the electric wire interposed therebetween and provided to be movable in a vertical direction with respect to the base; an arrow part provided at a bottom part of the lower grasping part integrally with the lower grasping part or as a separate body; a supporting body arranged on a side opposite to the lower grasping part with the arrow part interposed therebetween, wherein the supporting body pushes the arrow part by a screw to be screwed with a lower supporting part provided at a bottom part of the base and extending in a longitudinal direction of the base; and a holding part for holding the lower grasping part to prevent it from being spaced from the base.