万能式断路器核心机构的改进研究

Improvement Perfection of Air Circuit Breaker’s Core Structure

以DW45系列万能式断路器为例,介绍了核心机构——操作机构、抽屉座等在我国低压电器数十年发展过程中的改进和完善。如操作机构按钮运动方式的改变、OK指示功能的增加、盖板侧板的优化等;抽屉座"L"型滑板加强结构的优化、开门装置的改进、位置指示功能的优化、限位支架稳定度的提高、侧板和铝导轨的加强工艺、桥形触头结构的改进;大容量断路器操作机构、抽屉座一体式结构的设计。通过一系列的改进、优化,提高了断路器的性能指标,满足了客户的需求。

Taking DW45 air circuit breaker as an example,this paper introduced its core structure-actuator,drawer seat＇ s improvment and perfection constantly in our country＇ s low voltage apparatus decade development process. By a series of improvement and optimization, such as changing of actuator＇ s key movement mode, increase of OK display function,optimization of lid and side board, optimization of drawer seat＇s side strengthened structure, improvement of bridge contact structure, etc, the performance of circuit breaker was greatly enhanced, which meets the customers＇ requirement.