Device and method for live-line release and lap joint of tubular bus connecting line

The invention discloses a device and method for live-line release and lap joint of a tubular bus connecting line, and the device comprises an insulating pulley which sleeves a tubular bus through an insulating rope sleeve, a pulley of an arc extinguishing pulley is provided with an insulating rope, and one end of the insulating rope is bound on the tubular bus connecting line; the arc-extinguishing tackle is sleeved on the tubular bus through a copper rope sleeve, an arc-extinguishing rope is arranged on a pulley of the arc-extinguishing tackle, the arc-extinguishing rope is composed of a conductive section and an insulating section, and the conductive section of the arc-extinguishing rope is bound on a connecting wire of the tubular bus. According to the invention, live lap joint or release of the connecting wire is realized through the insulating pulley and the arc extinguishing pulley, the damage of an electric arc generated by a no-load capacitive current to a worker in the release and lap joint process c