Rotary type quick clamping device of pipeline grinding robot

The invention discloses a rotary type quick clamping device of a pipeline grinding robot. The rotary type quick clamping device is special for quickly clamping a non-detachable pipeline on a construction site for the pipeline grinding robot or other grinding equipment. The rotary type quick clamping device comprises a machine frame part, a rotary feeding part, a braking mechanism, a coaxial rotating joint and a plugging and unplugging mechanism. By means of the coaxial rotary joint and the plugging and unplugging mechanism, the whole device can be opened or closed and is placed on the non-detachable pipeline on the construction site. One sections of T-shaped feeding rods are restrained by linear sliders on the machine frame part, and the other sections of the T-shaped feeding rods penetrate through arc through grooves in the rotary feeding part and are tangential to and restrained by the arc through grooves. The rotary feeding part is rotated under the action of external force, the plurality of feeding rods i