Clutch device

The utility model relates to the field of drive devices, and discloses a clutch device. The clutch device comprises a drive shaft. A spacer flange nut is connected to the drive shaft in a threaded mode and comprises a first connecting part, a flange plate and a second connecting part, wherein the first connecting part, the flange plate and the second connecting part are sequentially connected, the first connecting part is sleeved with a first bearing and a first gland, the second connecting part is sleeved with a second bearing and a second gland, and both the first gland and the second gland are connected with a moving piece; a fixing rod is connected to the moving piece and sleeved with a spring, one end of the fixing rod is connected with a piston rod, a swing arm is hinged to the first gland or the second gland, a friction block is arranged at the first end of the swing arm, a through hole is formed in the second end of the swing arm, the fixing rod penetrates through the through hole, and the second end