HITCHING APPARATUS FOR COMBINED UNIT Russian patent published in 2005 - IPC

FIELD: agricultural engineering, in particular, hitching equipment for connecting tractor to pull-type machines.

SUBSTANCE: hitching apparatus is designed for combined unit comprising tractor, hitch and pull-type farm machines, and is provided with tractor hitch, to which farm machine is to be fastened, hitch tongue spring-loaded relative to upper part of vertical tine and pivotally locked therewith. Vertical tine is made A-shaped, with two legs thereof being rigidly attached through adapter device to bottom part of tractor axle and mid portion being provided at both ends with eyelets for attachment of tractor hitch system. Hitch tongue is made in the form of girder and is rigidly attached to transverse bars of pull-type farm machine through connecting frame formed as horizontal bar. A-shaped tines are equipped with eyelets formed at their ends and adapted for connection to transverse bars rigidly attached to horizontal bars of pull-type farm machine. Two plates are arranged on mid portion of connecting frame and rigidly fixed to upper part of horizontal bar. Lever is pivotally fixed between two plates. Upper end of lever is cooperating in vertical plane with adjustment bolt positioned between two plates.

EFFECT: simplified construction and enhanced reliability in operation of hitch apparatus.

2 cl, 7 dwg