Equipment coupling for a commercial vehicle

The coupler has a guiding unit arranged on a chassis (G) of a commercial vehicle, and a blocking unit arranged on a structure of an equipment (B). Vertical centering blocks (3) are associated with a horizontal frame (B') of the equipment. Centering stops (6) are arranged on the chassis of the commercial vehicle. Each stop is formed by an abutment equipped with an orifice formed in front of a guide (5). Each block is engaged to the stop for assuring centering of the equipment.