Manual clutch device for lifting ground column and lifting ground column adopting manual clutch device

The utility model relates to a manual clutch device of a lifting ground column and an external clutch electric lifting ground column, and belongs to the field of automatic lifting ground columns. A manual clutch device of a lifting ground column and the lifting ground column adopting the manual clutch device are installed between a lifting ground column panel and a lead screw nut, and the clutch device comprises a clamping part, a connecting part, a limiting part and an elastic piece. The clamping part is fixed below the lifting ground column panel and is used for limiting the rotation of the limiting part and the connecting part in a normal power supply state; one end of the connecting part is inserted into the clamping part, and the other end is fixed with the screw nut; the limiting part is mounted on the connecting part and can axially slide along the connecting part under the action of the elastic piece; the elastic piece is sleeved on the circumference of the connecting part; in the power-off state, the