LOCK FOR CLAMPING COUPLING Russian patent published in 1998 - IPC

FIELD: clamping coupling on power takeoff shaft of self-propelled unit, for example, tractor. SUBSTANCE: coupling 6 has hole with splined rim 10 and power takeoff shaft 4 provided with corresponding splined profile and circular groove around it. Second hole 13 of coupling 6 used for receiving the locking member is located at angle relative to longitudinal axis; it intersects circular groove. At least one locking surface 15 of locking member is received by circular groove forming detachable joint between power takeoff shaft 4 and coupling 6. Locking member is made in form of screw and parts having locking surfaces 15 connected together by means of this screw. Locking member has from of screw 16 with internal and external hexahedrons; besides that, locking member includes screw and extender mounted for rotation relative to each other. Extender may be provided with spherical end engageable with end surface of screw or may be provided with blind hole where spring is located. EFFECT: improved connection of shaft with hub. 13 cl, 9 dwg