FIELD: tools for screwing and unscrewing stud (bolt) joints, practically in all branches of building industry and machine engineering. SUBSTANCE: wrench-multiplier for screwing and unscrewing nuts on (off) studs (bolts) with slit on their ends includes mechanism for increasing torque having combined by means of core pinion-shaft and driven gear wheel with head fit onto nut screwed on end of stud (bolt); member for fixing position of stud (bolt) in the form of polyhedron with pointed flat head inserted in slit of stud (bolt) and arranged along axis of core in through polyhedral opening. Such operation may be realized by one operator without holding stud (bolt) against cranking. EFFECT: enhanced technological effectiveness of screwing and unscrewing stud (bolt) joints in hard-to-reach places. 2 dwg
申请公布号
RU2200654(C2)
申请公布日期
2003.03.20
申请号
RU19990123160
申请日期
1999.10.27
申请人
GUZEVICH JURIJ DMITRIEVICH;KONDRATOV VALERIJ VLADIMIROVICH;RABER LEV MATVEEVICH;RUMJANTSEV EVGENIJ IVANOVICH;KHUSID RAISA GRIGOR'EVNA