Switching Device Resetting Mechanism for Wear Reduction
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Solution Overview
Problem
Existing switching devices with multiple trips face challenges in reliable resetting, as different trips require varying forces, leading to wear and potential failure of resetting devices and cranks, especially under high cycle demands.
Innovation Solution
A switching device with a single resetting device that moves all tripping devices from their tripped to armed positions, using a crank and resetting mechanism with adjustable bearing forces to evenly distribute force across different trips, ensuring consistent operation and reduced wear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple trips of different types are used, then the switching device can respond to specific faults, but the resetting device experiences varying forces leading to wear and premature failure
Solution Approach 1:
The patent combines multiple trip resetting functions into a single integrated resetting device with a common crank mechanism. This merging approach allows uniform force application to all trips during resetting operations, eliminating the wear and failure issues caused by varying forces on separate resetting devices while maintaining the ability to handle multiple fault types.
Solution Approach 2:
The resetting device is designed as a universal mechanism that can reset multiple different types of trips through a single crank operation. The device incorporates multiple resetting means that can simultaneously or sequentially act on different trips, providing a multi-functional solution that handles various fault conditions while applying consistent forces throughout the resetting process.
2Ease of operation
If a single resetting device is used for multiple trips, then the resetting operation is simplified, but the device must handle varying resetting forces which causes wear and potential failure
Solution Approach 1:
The patent merges multiple resetting functions into a single resetting device with a common crank, simplifying the operator's task to a single rotating motion. The device incorporates multiple resetting means connected to the crank that can simultaneously act on different trips, maintaining operational simplicity while distributing forces uniformly across all trips.
Solution Approach 2:
The resetting device employs adjustable resetting means that can modify force parameters to match the specific requirements of each trip type. By changing the mechanical parameters (such as lever arm lengths, spring constants, or gear ratios) of the resetting means, the device can accommodate varying resetting forces required by different trips without compromising durability or simplicity.
Data Source
AI summary
A switching device includes a shell delimiting a plurality of spaces each able to accommodate a trip including a tripping device, a switching device, and a control mechanism including a device for grasping that can be moved between a first position and a second position by an operator in order to control movement of the switching device between an open position and a closed position. The switching device is in the closed position when the device for grasping is in the first position and in the open position when the device for grasping is in the second position. The control mechanism includes a single resetting device that resets each trip when the operator moves the device for grasping from the first position into the second position.