专利号:ZL201020144716.6专利权人:上海梅山钢铁股份有限公司发明(设计)人:胡立虎张国柱黄成永一种防逆转重力式夹钳开闭器,其组成包括:开闭器套、触头轴、固定销、缓冲凸轮及底座,底座具有容缓冲凸轮进入的定位槽,此外,缓冲凸轮的两端固定有防逆转块,底座的定位槽边缘附近设 Patent No .: ZL201020144716.6 Patentee: Shanghai Meishan Iron & Steel Co., Ltd. Inventor: Hu Lihu Zhang Guochu Huang Chengyong An anti-gravity reversing gravity clamp switch, which comprises: a shutter sleeve, a contact shaft, A fixing pin, a buffer cam and a base. The base has a locating slot for receiving the buffer cam. In addition, two ends of the buffer cam are fixed with an anti-reversing block. In the vicinity of the edge of the locating slot of the base,