Sulfur hexafluoride arc-extinguishing chamber structure

The invention relates to a sulfur hexafluoride arc-extinguishing chamber structure, which comprises an insulation supporting sleeve having an arc-extinguishing chamber inside, an end cover arranged atone end of the insulation supporting sleeve and used for being connected with a static contact, and a conductive voltage-reduction and current-reduction assembly arranged at the other end of the insulation supporting sleeve and used for being connected with a moving contact. Air holes are formed in the end cover. The conductive voltage-reduction and current-reduction assembly comprises a conductive sleeve and a conductive voltage-reducing and current-reducing belt wound on the outer wall of the conductive sleeve. One end of the conductive voltage-reducing and current-reducing belt is fixed tothe outer wall of the conductive sleeve, and the other end of the conductive voltage-reducing and current-reducing belt is fixed to the outer wall of the end cover. The outer walls of the conductivesleeve, the insulation supp