VACCUM VALVE OPERATING MECHANISM OF-LOAD TAP CHANGER

申请公布号：: JPS59204224(A)
申请号：: JP19830079519
申请日期：: 1983.05.07
申请公布日期：: 1984.11.19
申请人：: HOKURIKU DENKI SEIZOU KK;FUJI DENKI SEIZO KK
发明人：: ONODERA ISAO;KUMAGAI TAKEO
分类号：: H01F29/04;H01H9/00;H01H33/66
主分类号：: H01F29/04
摘要：: PURPOSE:To hold correctly timing of opening and closing, and the speed of opening and closing of the vacuum valve operating mechanism of an on-load tap changer by a method wherein a protruding cam surface to enlarge pressure loading of a spring at the first stage of a rotation is annexed to a first cam to make a valve to perform opening action. CONSTITUTION:A vaccum valve 51 furnished with a fixed rod 52 and a movable rod 53 performes opening and closing action according to the rotation of a rotary disk 63 fixed to a driving shaft 64 and cams 62, 65, 72. The movable rod 53 is driven according to the rotation of the cams 62, 65, 72 through a cam roller 61, a guide rod 58, a basket 56, and a pressure spring 73. The cam 72 is provided with a cam surface 66 protruded on the outside peripheral circle 65 avoiding the position to come in contact with the cam roller 61 at vacuum valve normally closing time of the cam 62, and the cam roller 61 is pushed up in the fixed rod 52 direction still more than vacuum valve normally closing time. Accordingly, the correct speed of opening and closing, and timing of the vacuum valve can be secured.