Prevent rotary cylinder form barrel

The utility model provides a prevent rotary cylinder form barrel, including duct barrel, work barrel, spacing barrel, the terminal surface of duct barrel, work barrel, spacing barrel all is provided with annular connecting plate, duct barrel, work barrel and spacing barrel pass through the solid fixed ring shape connecting plate of bolt external member and connect fixedly with one heart in proper order, and there is central guide shaft through fixed the centre of a circle position of duct barrel and spacing barrel, by being fixed with a plurality of spacing cushion sockets along circumference evenly distributed on the terminal surface of work barrel one end on the spacing barrel. The utility model discloses owing to adopt central guide shaft location, can reduce the resistance of studio's piston operation well to protect the collision of piston and barrel better, improve vice reliable performance and the anti corrosion resisting property of piston motion in the sea water. 本实用新型提供了种防转动圆柱状筒体，包括涵道筒体、工作筒体、限位筒体；所述