GW4隔离开关触指弹簧更换工具的设计.pdf

电工电气 (20 7 No.4) GW4隔离开关触指弹簧更换工具的设计 工艺与装备 GW4隔离开关触指弹簧更换工具的设计 郭艳，贾霖，张伟 (国网江苏省电力公司常州供电公司，江苏 常州 213003) 摘 要：针对 GW4 型户外隔离开关触指弹簧手工更换难度大、耗时长、触指片易损坏、检修人员易 受伤的问题，设计了一种 GW4 型隔离开关触指弹簧更换专用工具。设计方案采用双向压缩法，选择三角 型装置压缩弹簧，通过上部加装螺栓及底部焊接金属条方式固定C型金属板，并使用45#钢铁制作工具。 与传统手工工作方法相比，所设计工具缩短了触指弹簧更换时间，提高了工作效率，并且可避免触指片 损坏及对检修人员人身伤害。 关键词：GW4隔离开关；触指弹簧；专用更换工具；双向压缩 中图分类号：TM564.1 文献标识码：A 文章编号：1007-3175(2017)04-0054-04 Design of Special Tool for Replacing Contact Finger Spring of GW4 Disconnector GUO Yan, JIA Lin, ZHANG Wei State Grid Changzhou Power Supply Company of Jiangsu Power Company, Changzhou 2 00, China （ ） Abstract: In allusion to the tough issues about manually replacing the contact finger spring of GW4 disconnector, a special tool was de- signed to prevent contact finger damage and personal injury as well as reducing replacement time. The designing scheme adopted the idea of biaxial compression and chose the trigonal fixture to compress the spring. The C-type metal plate was clamped by mounting bolt on the top and welding metal bars on the bottom. No. 45 steel was used to manufacture the tool. Compared to the traditional manual method, the devel- oped tool reduced the replacement time of the contact finger spring, improved the work efficiency and prevented the contact finger damage as well as the personal injury effectively. Key words: GW4 disconnector; contact finger spring; special tool; biaxial compression 0 引言 供电公司变电所内很多隔离开关运行年限长， 检修周期长，隔离开关出现的问题大幅上升 [3]。由 隔离开关是高压开关电器中使用最多的一种电 于隔离开关大部分位于室外场地，长期运行在高电 器，起着导电和隔离的作用，在设备的维修中使工 压、高温、潮湿等恶劣环境下，触指