EASILY-DETACHABLE FASTENER AT RADIAL NEGATIVE ALLOWANCE Russian patent published in 2004 - IPC

FIELD: mechanical engineering; coupling and rigid fixation of shaft half-coupling flanges working at heavy loads and high rotational speed; high-pressure vessels requiring frequent disassembly.

SUBSTANCE: proposed easily detachable fastener has stud with nuts fitted on its threaded ends and bush, Stud and bush are received by coaxial cylindrical bores of part being connected and are engageable over taper surfaces. Bush is provided with bead on side of taper surface of larger diameter which is used for locking the bush in axial direction to exclude its turn in tightening the nuts. This bead is engageable with end surface formed by additional cylindrical bore found in part before its surface locking the nut in axial direction.

EFFECT: enhanced reliability; reduced number of parts required for disassembly.

2 cl, 2 dwg