Withdrawable Circuit Breaker Transportation Device Simultaneous Handle Control
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Solution Overview
Problem
Conventional transportation devices for circuit breakers often malfunction due to individual movement of left and right handles, leading to incomplete separation from the cradle, potentially causing damage or accidents.
Innovation Solution
A transportation device with a girder assembly featuring a pair of sliding plates and a rotation plate, where the handles are coupled to the sliding plates, allowing simultaneous movement to ensure both plates are separated from the rail grooves, preventing incomplete withdrawal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If handles are moved individually, then operation flexibility is improved, but reliability deteriorates due to risk of incomplete separation
Solution Approach 1:
The patent combines the movement control of left and right handles into a unified mechanism. The connecting rod links the two handles such that when one handle is operated, the other is automatically moved in coordination. This merging of control ensures both sliding plates are separated from rail grooves simultaneously, preventing incomplete separation while maintaining operational simplicity.
Solution Approach 2:
The connecting rod acts as an intermediary mechanism between the left and right handles. It transmits and coordinates the movement between the two handles, ensuring they move together in unison. This intermediary component guarantees that both sliding plates are separated simultaneously, eliminating the reliability issue of incomplete separation.
2Reliability
If handles are coupled together, then reliability of complete separation is improved, but device complexity increases
Solution Approach 1:
The coupling mechanism is segmented into distinct functional components: the connecting rod, the connection holes, and the handle assemblies. Each component has a specific function, and they are assembled in a modular fashion. This segmentation allows the complex function of coordinated handle movement to be achieved through simple, well-defined parts that are easy to manufacture and maintain.
Solution Approach 2:
Instead of complexly linking the handles through multiple joints and mechanisms, the patent uses a simple inverted approach: the connecting rod with connection holes that directly receive the handles. This inverted simplification achieves the coordination function with minimal complexity, reducing the number of parts and assembly steps while ensuring reliable simultaneous separation.
Data Source
AI summary
The present invention relates to a transportation device of a withdrawable circuit breaker, and more particularly, to a transportation device of a withdrawable circuit breaker capable of simultaneously moving right and left handles of a girder assembly for restricting movement of the transportation device or releasing a restricted state. The transportation device of a circuit breaker includes: a truck assembly on which a body of the circuit breaker is loadable; a body plate of a girder assembly installed on a front surface of the truck assembly; a pair of sliding plates slidably installed in the body plate; and a rotation plate having both sides to which leg portions of the sliding plates are rotatably coupled, respectively, wherein the rotation plate is inserted into a lead screw penetratingly-formed at a central part of the girder assembly.