Agricultural forage harvesting machine comprising a frame (1) to which a structure (22) is attached, at least partially, above at least one device for collecting (2) vegetables in the soil, comprising said device teeth (8) with tooth tips (9) describing a curved cover (10) when the teeth (8) are in motion, the machine also comprising at least one treatment device (3) for vegetables collected located in the vicinity of the collection device (2), and a guiding device (17) of the vegetables located at least partially above and at a reduced distance from the collection device (2), the guiding device (17) being movable with respect to the collection device (2) around an instantaneous center of main rotation (27), by means of a displacement device (24) comprising a first joining means (25) and a second joining means (2 6) of the guiding device (17) to the structure (22), allowing the first joining means (25) for the guiding device (17) to pivot around a first instantaneous center of rotation (39), allowing the second means of connection (26) that the guiding device (17) pivots around a second instantaneous center of rotation (43), the displacement device (24) being able to be placed in at least a first position and a second position, comprising the guiding device (17) a front part (48) having a lower front end (49), a rear part (50) delimited by a rear end (51), and an intermediate part (52) that joins the front part ( 48) to the rear part (50), characterized in that the first joining means (25) and the second joining means (26) are geometrically and / or elastically configured so that in the first position, the lower front end ( 49) is raised high above the ground and the intermediate part ( 52) approaches the tooth tips (9) of the collection device (2), and that in the second position, the lower front end (49) closely approximates the ground and the intermediate part (52) and the rear part (50) move away from the tooth tips (9) of the collection device (2).Máquina agríc
