Battery-Powered Motorized Racking Tool for Arc Flash Safety
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Solution Overview
Problem
There is a need for a lightweight, portable, and battery-operated motorized tool that can be used by a single person to install and remove electrical components in an arc flash zone without exposing the operator to prolonged hazards and excessive physical strain, while eliminating the risk of tripping hazards from power cords.
Innovation Solution
A battery-powered motorized racking tool with a rotatable shaft and torque limiting clutch, equipped with ergonomic handles and a universal tool attachment, allowing for safe and efficient operation in arc flash zones by reducing operator exposure and physical strain, and eliminating the need for power cords.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a motorized tool is used to install and remove electrical components, then productivity is improved, but device complexity increases
Solution Approach 1:
The motorized racking tool is divided into distinct functional modules: a motor assembly for automated rotation, a torque limiting clutch mechanism for controlled engagement, a shaft for mechanical transmission, and handling components. This segmentation allows each module to perform its specific function independently, enabling automated operation that improves productivity while keeping the overall device manageable in complexity.
Solution Approach 2:
The patent replaces manual mechanical operations with an automated motorized system. The motor assembly automatically rotates the shaft to engage and disengage circuit breakers, eliminating the need for manual cranking or lever operations. This substitution of manual mechanics with motorized automation directly improves installation and removal speed while the modular design keeps complexity controlled.
2Ease of operation
If the tool is made lightweight for ease of operation, then ease of operation is improved, but structural strength may deteriorate
Solution Approach 1:
The tool employs local quality by using lightweight materials for non-critical components such as the housing and handles, while concentrating structural strength in specific load-bearing areas. The motor assembly, torque limiting clutch, and shaft connection points are designed with reinforced structures to maintain structural integrity during high-torque operations, while other portions of the tool remain lightweight for ease of handling.
Solution Approach 2:
The patent utilizes composite construction by combining materials with different properties in the tool structure. Lightweight materials such as aluminum alloys or composite polymers are used for the housing and handles to reduce overall weight and improve ease of operation, while steel or other high-strength materials are used for the shaft, motor mounting brackets, and torque limiting clutch components to ensure structural integrity during motorized operation.
3Ease of operation
If a battery-operated system is used instead of corded power, then ease of operation is improved by eliminating tripping hazards, but use of energy increases
Solution Approach 1:
The battery-operated motorized tool employs periodic action by using an on-demand motor activation system. The motor is activated only during the brief periods when circuit breakers need to be racked in or out, rather than running continuously. This intermittent operation significantly reduces battery power consumption while maintaining the mobility and safety advantages of a cordless system, allowing the operator to move freely without tripping hazards.
4Reliability
If operator exposure time to arc flash hazards is reduced, then safety is improved, but productivity may deteriorate due to rapid operation requirements
Solution Approach 1:
The patent applies mechanics substitution by replacing manual, time-consuming operations with automated motorized operation. The motor assembly rapidly racks circuit breakers in and out without requiring the operator to manually manipulate heavy components or perform multiple manual steps. This automated mechanical substitution dramatically reduces the time the operator must remain in proximity to arc flash hazards, thereby improving safety while maintaining high productivity through rapid operation.
Solution Approach 2:
The tool enables the operator to quickly skip through the critical hazard zone by rapidly completing the racking operation. The motorized system performs the breaker engagement and disengagement in a single, swift motion rather than requiring prolonged manual manipulation. This rushing through of the hazardous operation minimizes exposure time to arc flash risks while maintaining productivity through efficient, rapid completion of each task.
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 tool significantly reduces operator time and heat stress, enhances safety by minimizing exposure to hazardous equipment, and prevents overheating and tripping hazards, enabling efficient installation and removal of electrical components in arc flash zones.
Implementation Method 1
A battery can be positioned between the plates supported by three and up to four braces, or possibly more braces
Implementation Method 2
A motor can rotate a torque limiting clutch
Implementation Method 3
A motor can rotate a torque limiting clutch
Data Source
AI summary
A portable power motorized racking tool having a front plate and a back plate disposed opposite, a first and second handle on the front plate, a motor mount secured to the front plate with a motor mount extension protruding through a shaft hole, a motor with torque limiting clutch attached to the motor mount, a battery between the plates supported by 4 braces connected to the front and back plates containing the battery; a power cable connecting the battery to the motor, a start button with ignition wire connecting the start button to the battery secured to the front plate for actuating the motor, a rotatable shaft connected to the torque limiting clutch and contained by the motor mount extension, an install switch and a remove switch each connected to the motor for rotating the rotatable shaft, and a universal tool connected to the rotatable shaft.