VEHICLE TOWING GEAR Russian patent published in 2007 - IPC B60D1/18 

FIELD: transport engineering.

SUBSTANCE: invention relates to devices for towing vehicles, mainly, passenger cars. Proposed towing gear has cylindrical housing with bases to installed on vehicle and rod fitted in bases for axial displacement and spring-loaded relative to bases and also drum with guide strips and towing wire rope installed inside housing. Guide strip is rigidly secured on inner surface, and towing wire rope is arranged on outer surface of drum. It has two stops coupled with rod and three bushings fitted on rod. Projection is made in middle part of each bushing with end of pull-back spring secured on projection. Disks rigidly coupled with strip are installed at both sides of pull-back spring. Two cam are installed for engagement with corresponding disks on ends of first bushing. One cam is installed for each end of second and third bushing. Free ends of pull-back springs are secured on guide strip. Bushings are provided with splined slots and are made for displacement together with drum along rod whose stops can engages with splined slots of bushings. Each cam is installed on bracket rigidly coupled with bushing, being partially arranged in through slot aligned with splined slot of bushing, is provided with tooth designed for engagement with mating slots of corresponding disk. Rod is made in form of torsion shaft whose stops are installed for engagement with cams spring-loaded relative to brackets. Bracket can be made in form of frame with support surfaces designed for engagement with cam tooth. Stops of rod are provided with riffles designed for engagement with mating riffles of cams. Seat holes in frame for axle of cam are made in form of slots exceeding in height diameter of cam axle.

EFFECT: provision of compact design towing gear, improved reliability and increased speed of unwinding of wire rope.

4 cl, 8 dwg