Main shaft structure and contain ball valve of this structure is said to roll formula double track

The utility model discloses a main shaft structure and contain ball valve of this structure is said to roll formula double track belongs to the ball valve field. The utility model discloses a roll formula double track way main shaft structure, include and two rail member rolling friction complex limit pin, two rail member go up central symmetry and are equipped with first track and second track, limit pin passes through at both ends rolling sleeve and first track and second track swing joint, and can first track with the roll cooperates in order to realize rolling with two rail member in the second track. The utility model discloses a main shaft structure and contain ball valve of this structure is said to roll formula double track has and changes traditional main shaft structure, changessliding friction into rolling friction, and the problem of ingenious solution main shaft concentricity when rotatory reduces rotary torque, extension valve body life's characteristics. 本实用新型公开种滚动式双轨道主轴结构及包含该结构的球阀，属于球阀领域。本实用新型