SELF-LOOSENING PROTECTION SYSTEM Russian patent published in 2020 - IPC F16B5/06 F16B5/02 F16B39/02 B61D17/00 

FIELD: rail vehicles.

SUBSTANCE: invention relates to a system for protection against self-unfastening with a retainer for locking parts, in particular, a rail vehicle. System (2) for self-unfastening comprises fastener (1), first part (141), second part (142), first detachable connection (51) and third detachable connection (53). Lock (1) is intended for locking both parts (141, 142) of rail vehicle (2) and has first section (31), first strap (71) and second strap (72). First strap (71) and second strap (72) are located on long side (61) of first segment (31) opposite to each other, wherein first pad (71) abuts on top of first part (141), and second strap (72) is intended to support from below second part (142) and prevent its falling out. At that, second part (142) in case of failure and/or disconnection of third detachable connection (53) adjoins on top to second strap (72), second pad (72) prevents loss of second part (142), and first pad (71) in case of failure and/or disconnection of first detachable connection (51) adjoins to first part and retains retainer (1) on first part (141).

EFFECT: technical result is simple and reliable provision of protection against self-unfastening.

13 cl, 10 dwg