The crank mechanism is arranged on the lower part of the insulationrod, and comprises a crank type wrench and a wrench bracket.
导杆伸入弯头后通过软索与设置在绝缘杆内的拉杆固定相连；
2
The lightning protection could be improved by means of decreasing grounding resistance of tower, installing line type surge arrester and side lightning rod as well as increasing the insulation level.
采取杆塔降阻、装设线路避雷器、侧向避雷针和加强绝缘等多种措施后，防雷保护效果较好。
3
The insulation rail distance rod can be widely used on the railway circuit sections of various rail distances.