COUPLING GEAR OF TRUCK-TRACTOR Russian patent published in 2007 - IPC B60D1/14 

FIELD: transport engineering.

SUBSTANCE: invention relates to devices for coupling trailer with truck-tractor. Proposed coupling gear of truck-tractor contains embracing member connected with pole of coupling member and housing whose open part is made in form of truncated cone provided with blind cylindrical hole and rigidly coupled with embracing member, end piece of coupling member provided with ring groove and arranged in blind cylindrical hole of housing and locks hinge-mounted on housing from one side and engaging through cross slots of housing with ring groove of end piece of coupling member pole, and at other side connected by flexible tie. It has also shaft with two-side cam installed in plane of locks in contact with inner surfaces of locks and furnished with drive lever with stop of housing to limit lever travel. Through holes are made in housing for connection with embracing member. End piece of pole of connecting member and locks are provided with conical guide parts. Drive lever is furnished with control cable. Housing is provided with drain holes.

EFFECT: facilitated coupling and uncoupling of trailer and truck-tractor, provision of compensation for angular oscillations of pole around its axis relative to coupling gear arising when moving over rough terrain and leading to twisting of coupling gear.

4 cl, 6 dwg