Embedded two-stage lifting unloading platform door

The utility model discloses an embedded two-stage lifting unloading platform door which comprises an embedded machine box, a first lifting mechanism is arranged in the embedded machine box, the embedded machine box is connected with a machine box door through the first lifting mechanism, a second lifting mechanism is arranged in the machine box door, and the second lifting mechanism is connected with the machine box door through the second lifting mechanism. The case door is connected with an unloading door through a second lifting mechanism; and the unloading door is a grating door. When the platform door is installed, the embedded case is embedded under the ground of the platform, the case door and the unloading door are integrally embedded in the embedded case, the case door and the unloading door are respectively lifted by two-stage lifting to play a protection role when the door is closed, and the door body is completely hidden in the embedded case under the ground when the door is opened, so that the do