HITCHING APPARATUS Russian patent published in 2006 - IPC A01B59/04 B60D1/00 

FIELD: agricultural engineering, in particular, connection or hitching equipment for attachment of working tools to tractor preferably equipped with drive mechanism having tape-type caterpillars.

SUBSTANCE: hitching apparatus has half arranged on the side in the vicinity of working tools and half arranged on the side of tractor, said halves being interconnected through set of connection tie-rods. At least two connection tie-rods consist of at least two sections joined with each other so that on applying of force to at least one of sections of one of connection tie-rods, both sections are capable of shifting relative to each other in connection zone and changing their lengths. End part of one section of tie-rod, which is within connection zone, is equipped with widening portion of stable shape for increasing cross section. Connection zone of other section of respective tie-rod is formed as casing with free internal space wherein one or more elastically deformed compensating inserts are incorporated. Widening portion is made polygonal, preferably rectangular, in its horizontal section. Outer surfaces of widening portion are arranged at an obtuse angle relative to parts adjoining thereto or to side surfaces of tie-rod.

EFFECT: simplified construction and enhanced reliability in operation.

8 cl, 6 dwg