A harvesting device includes a support defining an uprooting position of the harvesting device, and an uprooting section comprising at least two uprooting units, each uprooting unit having at least one uprooting element, each uprooting unit being adapted to uproot root crop. At least one of the uprooting units is mobile with respect to the support between an active position and an inactive position, the active position being a position in which the uprooting unit is able to uproot beet crop in a field having a field surface when the harvesting device is in the uprooting position, the inactive position being a position in which the uprooting unit is unable to uproot beet crop in the field when the harvesting device is in the uprooting position.

In the case of a mounting device for mounting a support arm, which moves a lifting tool, on a harvesting machine, a cylindrical bushing is mounted on a machine part. The bushing is enclosed by a retaining element on which the end of the support arm opposite the lifting tool is fixed. The bushing has a through-hole that receives a machine part and has an axis of symmetry extending eccentrically relative to the axis of rotation of the cylindrical bushing.

In the case of a mounting device for mounting a support arm, which moves a lifting tool, on a harvesting machine, a cylindrical bushing is mounted on a machine part. The bushing is enclosed by a retaining element on which the end of the support arm opposite the lifting tool is fixed. The bushing has a through-hole that receives a machine part and has an axis of symmetry extending eccentrically relative to the axis of rotation of the cylindrical bushing.

Machine for harvesting roots planted in the ground and aligned in rows, comprising a unit (36) for horizontally cutting the head of the roots, said unit having a means for automatically adjusting the level of its cutting blade depending on the level of this head, and being followed by a harvesting unit (48) that hollows out the earth beneath the roots at a relative height beneath the cutting level, characterized in that it has a means for detecting the height of the top of the root e, and a means for adjusting the relative height of the harvesting unit (48) with respect to the cutting level, depending on this height.

Machine for harvesting roots planted in the ground and aligned in rows, comprising a unit (36) for horizontally cutting the head of the roots, said unit having a means for automatically adjusting the level of its cutting blade depending on the level of this head, and being followed by a harvesting unit (48) that hollows out the earth beneath the roots at a relative height beneath the cutting level, characterized in that it has a means for detecting the height of the top of the root e, and a means for adjusting the relative height of the harvesting unit (48) with respect to the cutting level, depending on this height.

A mechanical harvester for harvesting produce with a core planted in a field is provided. The mechanical harvester includes a chassis, a positioning apparatus, a decoring device, and a transport assembly. The positioning apparatus is connected to the chassis and configured to position the produce in the ground for harvesting and decoring. The decoring device is connected to the positioning apparatus and configured to sever the core of the produce while the produce is in the ground. The transport assembly is connected to the chassis and configured to lift the cut produce from the ground and transport the cut produce to a processing unit or a storage container.