Bolt fastening device for electrified high-voltage joint of transformer substation

The invention relates to the field of electric power overhaul equipment, and discloses a bolt fastening device for an electrified high-voltage joint of a transformer substation. The bolt fastening device comprises a fastening assembly, a connecting rod, a vertical adjusting assembly, a connecting assembly, a horizontal adjusting assembly and a clamping assembly. The fastening assembly comprises a working end used for fastening a bolt and a connecting end, one end of the connecting rod is connected with the connecting end of the fastening assembly, the vertical adjusting assembly is detachably connected with the connecting rod and used for adjusting the height of the connecting rod, one end of the connecting assembly is connected with the end, away from the connecting rod, of the vertical adjusting assembly, and one end of the horizontal adjusting assembly is connected with the other end of the connecting assembly. According to the device, through mutual cooperation of the vertical adjusting assembly and the h