Rapid locking device for furnace door of vacuum furnace

The utility model discloses a vacuum furnace door quick locking device which comprises a locking device body and a vacuum furnace, a furnace door is installed on the outer side of the vacuum furnace, the locking device body is arranged on the furnace door, a locking positioning seat is arranged on the locking device body, one side of the locking positioning seat is provided with a hydraulic driving mechanism, and the other side of the locking positioning seat is provided with a hydraulic cylinder. The movable end of the hydraulic driving mechanism is connected with a locking block, a positioning ring is further arranged on the outer side of the vacuum furnace, locking holes are evenly formed in the positioning ring, the vacuum furnace and the furnace door are provided with a furnace door positioning seat and a furnace door connecting plate respectively, and the furnace door connecting plate is movably connected with the furnace door positioning seat through a rotating rod. According to the rapid locking devic