一種負(fù)荷開關(guān)分閘脫扣機(jī)構(gòu)優(yōu)化設(shè)計
劉其峰
(施耐德電氣(中國)有限公司，北京 100176)
摘 要：負(fù)荷開關(guān)在分閘過程中，需要機(jī)構(gòu)產(chǎn)生足夠的分閘速度完成開關(guān)分閘，此部分能量由壓縮后的彈簧提供，在此過程中，由分閘脫扣摯子鎖止分閘機(jī)構(gòu)，避免彈簧能量過早釋放。通過對分閘機(jī)構(gòu)運(yùn)動過程的分析，得出影響分閘性能的三個主要功能尺寸，通過嚴(yán)謹(jǐn)?shù)某叽珂湻治觯瑑?yōu)化設(shè)計了一種分閘脫扣機(jī)構(gòu)，并通過運(yùn)動仿真分析，對優(yōu)化后的結(jié)構(gòu)進(jìn)行強(qiáng)度研究。優(yōu)化后的機(jī)構(gòu)既能確保機(jī)構(gòu)的彈簧儲能過程可靠完成，又能保證脫扣過程中分閘脫扣摯子及時打開，并避免出現(xiàn)分閘脫扣摯子的回彈過快，阻礙機(jī)構(gòu)分閘。經(jīng)機(jī)械壽命測試證明了方案的可靠性。
關(guān)鍵詞： 負(fù)荷開關(guān)；分閘速度；分閘脫扣摯子；尺寸鏈分析
中圖分類號：TM564.2 文獻(xiàn)標(biāo)識碼：A 文章編號：1007-3175(2023)01-0055-04
An Optimized Design of Opening and Tripping
Structure of a Load Switch
LIU Qi-feng
（Schneider Electric Co., Ltd, Beijing 100176, China）
Abstract: The load switch requires enough speed to complete its opening and closing, and the parts of energy for its speed is provided by the compressed spring. To avoid the premature release of energy, an opening and tripping switch is used to lock the separating brake structure. The paper obtains three main functional dimensions which affect the analytical performance through analyzing the movement of the separating brake structure. A type of separating brake tripping structure is optimized by rigorous dimension chain analysis. Then, the strength analysis of the optimized structure is carried out by simulated study of its movement. The optimized structure not only ensures the reliable completion of the spring energy storage and timely opening of the opening and tripping switch during the process of tripping, but also avoids the overquick rebound of the opening and tripping switch to stop the structure opening. The reliability of this structure is proved by the mechanical life test.
Key words: load switch; opening and tripping speed; opening and tripping switch; dimension chain analysis
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