Hydraulic double-acting structure for high-voltage switch arc extinguish chamber

The invention relates to a hydraulic double-acting structure for a high-voltage switch arc extinguish chamber. A hydraulic double-acting structure for a high-voltage switch arc extinguish chamber comprises a double-acting hydraulic cylinder, the double-acting hydraulic cylinder comprises a cylinder body, and the cylinder body is provided with an inner chamber and an outer chamber; an inner piston and an outer piston are arranged in the inner chamber and the outer chamber respectively, each of the inner piston and the outer piston comprises a piston body and a rod body, and each rod body comprises a first rod body and a second rod body which are equal in diameter; one of the cylinder body, the inner piston and the outer piston is fixed at the static end assembly, and the other two are respectively in transmission connection with the movable end assembly and the static arc contact; the two axial ends of the double-acting hydraulic cylinder are each provided with a cavity communicating channel, and the cavity co