Overhead line fault monitoring system and acquisition device thereof

The utility model relates to an overhead line fault monitoring system and an acquisition device thereof, and belongs to the technical field of overhead line fault detection. The overhead line fault acquisition device comprises a mounting shell, a control module arranged in the mounting shell, a first communication module, a power supply battery and a wire clamping mechanism, the wire clamping mechanism is mounted at the top end part of the mounting shell; the wire clamping mechanism comprises a lower hoop piece fixedly arranged on the top end portion, an upper hoop piece detachably and fixedlyconnected with the lower hoop piece to clamp a power line, and a rainproof cover capable of covering the upper hoop piece in an openable mode. One end of the rainproof cover is hinged to the top endpart through a hinge shaft; a torsion spring is sleeved outside the hinged shaft, one torsion arm of the torsion spring abuts against the top end portion, the other torsion arm of the torsion spring abuts against the rainproof