接触网腕臂是接触网的主要支撑部件。规格、重量比较大,运营以来,由于一些客观原因,致使接触网状态不符合技术要求,有的腕臂严重锈蚀,影响安全供电,需要更换。略阳供电段宝鸡接触网一工区的职工,在毛主席革命路线指引下,自己动手,自力更生,克服重 Catenary Arm arm is the main support of the catenary. Specifications, the weight is relatively large, since operation, due to some objective reasons, resulting in catenary does not meet the technical requirements, and some severe corrosion of the wrist arm, affecting the safe power supply, need to be replaced. Lueyang Power Supply Section Baoji Clay I work area workers, under the guidance of Chairman Mao’s revolutionary line, do it yourself, self-reliance, overcoming the heavy