Agricultural device with two work units

An agricultural device comprising a first work unit and a second work unit, the device being able to occupy a work configuration, in which each unit rests at least partially on the ground, and a transport configuration, the device being connected to a chassis that can be mounted on or integrated into a tractor vehicle moving in a direction of advance, the device comprising a support arm pivotally mounted on the chassis around a lift axis substantially parallel to the direction of advance and around which the device is pivoted to reach the different configurations, each unit comprising a plurality of plant processing elements and extending in a respective longitudinal direction that is transverse to the direction of advance at least in the work configuration, each unit being pivotally mounted relative to the support arm around a connecting axis that is transverse relative to the corresponding longitudinal direction, each unit comprising a respective guided end and a respective free end further away from the corresponding connecting axis than the corresponding guided end,

• wherein the agricultural device comprises a central actuator configured to apply on each of the units, at least in the work configuration of the device, a biasing force opposed to a downward pivoting movement of its free end around the corresponding connecting axis.