Arc Notch Lever Mechanism for Spark-Free ACB Tripping
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing frame-type ACB tripping devices pose security risks due to sparks generated when the circuit breaker is powered on during installation, potentially leading to equipment damage and safety hazards.
Innovation Solution
A safety tripping device for a frame-type ACB drawer seat is designed with an irregular gear, levers, a tension spring, and a tripping shaft, utilizing an arc-shaped notch and protrusion mechanism to control the tripping operation, ensuring secure engagement and separation to prevent sparks and ensure safe operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the circuit breaker is powered on during installation, then the circuit breaker can be activated, but sparks are generated between contacts causing safety risks
Solution Approach 1:
The mechanical interlocking mechanism performs preliminary action by preventing the circuit breaker from being powered on during installation. The interlocking structure ensures that the circuit breaker cannot be activated until it is properly installed and positioned, thereby eliminating the harmful sparks before they can occur.
Solution Approach 2:
The mechanical interlocking mechanism acts as an intermediary between the installation process and the power-on operation. It mediates by controlling the sequence of operations, ensuring that installation is completed before power can be applied, thus preventing direct contact between live contacts during installation.
2Adaptability or versatility
If the circuit breaker is tripped or inserted while powered on, then the operation can be performed, but security risks increase due to potential equipment damage
Solution Approach 1:
The mechanical interlocking mechanism performs preliminary verification by ensuring the circuit breaker is in the correct state before allowing operation. It checks whether the breaker is properly installed and positioned before enabling power-on, trip, or insertion operations, thereby preventing equipment damage and ensuring reliable operation.
Solution Approach 2:
The mechanical interlocking mechanism provides feedback by physically preventing operations that would occur while powered on. The interlocking structure gives immediate mechanical feedback to the operator, making it impossible to perform unsafe operations and ensuring that only safe, reliable operations can be executed.
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 device provides a secure, simple, and reliable tripping mechanism that prevents sparks and ensures smooth, accurate, and flexible operation, reducing safety risks and being suitable for large-scale production.
Implementation Method 1
The other end of the first lever is connected to the tension spring
Data Source
AI summary
A safety tripping device for a frame-type ACB drawer seat, which includes a special gear, a first lever, a tension spring, a second lever, and a tripping shaft. The special gear includes the first rotation shaft and the first irregular convex flange feature. The irregular convex flange is lapped with a bending edge of one end of the first lever. The other end of the first lever is connected to the tension spring. An arc-shaped notch is provided at one end of the first lever which corresponds to the connecting spring. An arc-shaped protrusion matching the arc-shaped notch is provided at one end of the second lever. The arc-shaped protrusion engages with or separates from the arc-shaped notch to achieve the tripping operation. The frame-type ACB drawer seat according to the present invention is suitable for large-scale production applications.