Improved generation inflation formula plug pin and mounting tool thereof

The utility model discloses an improved inflation formula plug pin, it is including round conic section, circular arc section and the cylindrical section connected in order, be equipped with the inflation cavity in the circle conic section, circle conic section includes one -level circle conic section and second grade circle conic section, and the second grade circle conic section be connected with the circular arc section, one -level circle conic section's tapering is greater than second grade circle conic section's tapering, be equipped with the connection cavity in the cylindrical section.The utility model also discloses a plug pin mounting tool, it includes U shaped frame frame, conical head bolt and sphere joint sleeve, U shaped frame frame one end is equipped with spherical groove,and the other end is equipped with the screw thread through -hole. The utility model discloses structural design is simple reasonable, and each part is mutually supported and to be realized the wholeinterference fit of plug pi