| 摘要 |
An inner pipe cutter has casing with radial channels and slots for placement of hinged by means of axles cutter holders with reinforced cutters that are held in initial position with spring catches, piston with long central circulation opening and with cone provided in the lower part for interaction with respective surface of cutter holders, spring for support and return of piston to initial position, bushing and spring installed in the lower part of the casing. In the upper part of the body inner circular groove is provided, for installation of space ring, in the middle part–radial opening for installation of holding pin, this by means of long groove provided at the outer surface of the piston holds the piston with respect to axial turn, at outer surface of the casing angular recesses are provided for fixation by means of fixation elements of angle holders, inside the lower part of the body with possibility of axial displacement holding ring is installed, in the lower part of the piston directed radial circulation channels are provided, and at the upper end surface recess-seat is provided for installation of ball-valve. |
