Hitch for, especially, agricultural implements supported by a tractor.

摘要

1. A coupling device for an implement, an agricultural implement in particular, intended to be carried by a tractor, the said implement being provided with means (A) for hitching to a three point type lifting system (C) of the tractor, comprising an intermediate support (10) provided between the lifting system (C) and the hitching means (A) of the implement, this intermediate support comprising in its high portion a hitching point (12) intended to be connected to the high point (9) of the hitching means (B) of the implement, and in its low portion, attachment means (15, 16) situated towards its transverse ends and intended to be connected to to the low hitching points (7, 8) of the implement, characterised in that, on the one hand, the intermediate support (10) is rigid and comprises in its high portion two hitching points (11, 13) situated at the transverse ends and connected respectively by two extensible connection means to the high point (3) of the lifting system (C) of the tractor, these connection means being capable of ensuring the transmission of the forces for the lifting of the implement carried by the tractor, the hitching point (12) for the implement forming a third point situated midway between the end points, that on the other hand, in the low portion, the two attachment points (15, 16) are made in a manner similar to the conventional attachment means of the tractor, in such a way that the low hitching points (7, 8) of the implement (1) can be received in these attachment points (15, 16), and that finally, moreover, the said intermediate support (10) comprises, in the middle of its low portion, an articulation means with a geometrical longitudinal axis (25) capable of cooperating with a complementary articulation means integral with a transverse bar (22) supported for rotation around its geometrical axis (24) by the two low hitching points (4, 5) of the lifting system (C) of the tractor, this articulation means being the only connection for the support in the low portion, the assembly allowing rocking movements of the implement around the two axes (24, 25).