Quick unlocking device for high-voltage cabinet door

The utility model discloses a high-voltage cabinet door quick unlocking device which comprises a U-shaped guide rail arranged on the inner wall of a cabinet door, an L-shaped hook plate is arranged in the U-shaped guide rail in a sliding mode, through kidney-shaped holes are symmetrically formed in the two sides of the L-shaped hook plate, a rolling shaft is arranged on the U-shaped guide rail and penetrates through the kidney-shaped holes, and a first nut is in threaded connection with the rolling shaft. A cylindrical roller is rotationally arranged on the rolling shaft; a door lock assembly is arranged on the outer wall of the cabinet door, the door lock assembly is arranged between the two symmetrical U-shaped guide rails, a shifting groove is formed in the L-shaped hook plate, and a shifting rod arranged on the door lock assembly extends into the shifting groove in the L-shaped hook plate; a plurality of hooks are arranged on a side plate of the L-shaped hook plate, a rectangular hole is formed in a door