LOCKING DEVICE FOR THREADED FASTENING ELEMENTS Russian patent published in 2014 - IPC F16B39/10 

FIELD: machine building.

SUBSTANCE: description is given to a locking device for threaded fastening elements such as fastening screws fixing the end covers of rolling bearing units to the axles of railway carriages. Fixation of a locking plate against rotation in respect to the fastening element is provided. The fastening element head is fitted by a locking ring with a row of recesses set along the circumference. The locking ring is fitted by a non-round central hole in which the fastening element is installed so that it is unable of rotation in respect to the ring. Lugs, extending from the locking plate through the recesses and getting to be engaged with the locking ring, hold the locking ring on the fastening element and prevent slipping of the locking ring and fastening element. In the proposed implementation versions the ring can be mounted on the fastening element in different angular positions.

EFFECT: invention allows for locking of the threaded fastening elements by the contact of lugs with flat surfaces of screw heads at the right angle without the rotation of screws to arrange the flat surfaces parallel to the lugs, thus improving the unit reliability on the whole.

17 cl, 9 dwg