High-voltage cabinet capable of quickly locking and isolating handcart

The utility model discloses a high-voltage cabinet capable of rapidly locking and isolating a handcart. The high-voltage cabinet comprises a high-voltage cabinet body and an isolation handcart. A hollow supporting seat is arranged in the high-voltage cabinet body. Guiding sliding rail mechanisms are arranged between the two sides of the isolation handcart and the two sides of the supporting base.A guide seat is arranged below the supporting seat; a sliding groove is formed in the guide seat, two linear racks are arranged on the sliding groove, a bearing seat is arranged at the outer end of the guide seat, two gears are arranged on the bearing seat, a rotating handle is arranged at the outer end of a rotating shaft of one gear, a plurality of positioning holes are formed in the outer end of the bearing seat, and a plug pin is arranged on the rotating handle. Limiting plates are arranged on the two sides of the supporting base, positioning pins are arranged on the inner sides of the limiting plates in a protrud