Utilize automatic rotation angle device of cylinder

The utility model discloses an utilize automatic rotation angle device of cylinder, including work platform, the last cylinder block that is provided with of work platform, the inside cylinder that is provided with of cylinder block, the cylinder is connected with the drive shaft, be provided with the drive rack in the drive shaft, the drive rack is connected with the driving -disc, for discontinuous meshing connected mode between drive rack and the driving -disc, the driving -disc passes through the rotation axis to be fixed on work platform, the driving -disc includes the disc main part, disc main part outer lane is provided with insection section and smooth section, be provided with attracting magnet in the insection section, disc main part centre of a circle department is provided with the mounting hole, be provided with the fixed screw of anchor clamps in the disc main part, engagement means through the discontinuous, make the return stroke that rotation angle's device can be fine, and the angle of rotat