Device of changing valve and annotating fat mouth is pressed to fast speed belt

The utility model belongs to the technical field of long defeated pipe maintaining, concretely relates to device of changing valve and annotating fat mouth is pressed to fast speed belt, it includes the main structure body, security bolt and pressure release jackscrew, the interface of the screw hole shape of fat mouth matching is provided with and annotates in the lower part of main structure body, at the vertical screw hole that matches with security bolt that is provided with in the upper portion of main structure body, the middle through -hole of intercommunication threaded holes and interface is provided with at the middle part of main structure body, be connected with security bolt at threaded hole internal thread, security bolt is provided with first through -hole along the axial, first through -hole, middle through -hole and interface communicate in proper order, the pressure release jackscrew passes first through -hole in proper order and middle through -hole stretches into inthe interface. May not f