Dead-End Shoe Assembly for Safe Powerline Maintenance
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Solution Overview
Problem
Traditional tap-connectors used in overhead powerline assemblies are difficult to remove, posing safety risks and material wastage during maintenance, as they require significant force and time, often necessitating the clipping and splicing of new cables, which increases lineman exposure and suspension duration.
Innovation Solution
A dead-end shoe assembly with a connector block and set screw, allowing for secure and efficient transfer of electric current between conductors, anchored to insulators, facilitating safer and more efficient maintenance by enabling easy attachment and detachment of jumper lines without the need for extensive force or material wastage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional tap-connectors (H-tap, wedge-connectors) are used to connect main conductors and jumper lines, then secure electrical connection is achieved, but removal becomes extremely difficult requiring significant force and time
Solution Approach 1:
The connector is divided into separate components: a body portion with gripping elements and a separate jaw structure. The jaw can be independently opened and closed to grip or release the jumper line, allowing the connector to maintain strong grip during operation but enable easy release when needed.
Solution Approach 2:
The connector incorporates a dynamic jaw mechanism that can transition between open and closed states. The jaw is designed to flexibly grip the conductor during normal operation but can be easily opened by applying force to the operating mechanism, transforming the static strong connection into a dynamically controllable connection.
2Reliability
If traditional tap-connectors are used, then current transmission between conductors is secured, but maintenance time and lineman suspension duration increase
Solution Approach 1:
The connector is pre-configured with the jaw in a closed gripping position during installation, securing the electrical connection immediately. The operating mechanism is pre-positioned to allow quick activation for release, enabling maintenance personnel to rapidly disconnect the jumper line without time-consuming manual manipulation.
Solution Approach 2:
The jaw structure is extracted as a separate, movable component from the main connector body. This allows the jaw to be independently actuated for quick release of the jumper line, separating the functions of secure connection (body) and quick release (jaw), thereby reducing maintenance time while maintaining connection reliability.
3Reliability
If traditional tap-connectors are used, then electrical connection is established, but material wastage occurs requiring clipping and splicing of new cables
Solution Approach 1:
The connector is designed to allow recovery and reuse of the jumper line material. By enabling easy removal of the jumper line from the connector without damaging either component, the system permits the jumper line to be recovered, inspected, and reused in subsequent installations, reducing cable material wastage while maintaining reliable electrical connections.
4Strength
If traditional tap-connectors are used, then conductor connection is secured, but safety risks increase due to extended lineman exposure and suspension time
Solution Approach 1:
The connector employs a dynamic release mechanism that transforms the static, permanent-looking connection into a controllable, reversible connection. The jaw can be quickly opened by applying force to the operating mechanism, allowing linemen to rapidly disconnect jumpers and minimize suspension time, thereby reducing safety risks while maintaining secure connections during normal operation.
Solution Approach 2:
The jaw structure is extracted as a separate, independently actuated component that can be quickly opened to release the jumper line. This separation allows the main connector body to maintain secure gripping elements for connection reliability, while the removable jaw provides a quick-release function that minimizes lineman exposure time and reduces safety risks.
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 dead-end shoe assembly reduces safety risks and material wastage by allowing for easier and quicker maintenance operations, minimizing lineman exposure and suspension time, while enabling efficient current transfer between conductors, thus enhancing operational safety and reducing maintenance costs.
Implementation Method 1
the conducting line is compressed into the hole of the conductor block as the set screw is tightened into the interior of said hole
Implementation Method 2
transmit electric current to at least one 'de-energized,' other electric current conducting line
Data Source
AI summary
The technology relates to an electric current conducting assembly, more specifically with the incorporation of a dead end shoe.