| 摘要 |
FIELD: agricultural engineering. ^ SUBSTANCE: agronomic commercial unit has wheeled carrier bridge girder for accommodation of farm tools and units for adjustment position of wheels with drive. Each wheel position adjustment unit is adapted for rotation of wheels around vertical axis in two directions, for the purpose of which shaft-support is introduced into unit design. Lower part of shaft-support is connected with pair of wheels arranged in single geometric axis. Both wheels are connected with electric drive through single worm-and-worm transmission having at least two modes of engagement with wheels for independent or joint rotation thereof. Mid portion of shaft-support is provided with left-hand and right-hand threads and is connected through these threads with two rotors of electromechanical power drive through respective nuts having oppositely directed threads. ^ EFFECT: wider operating capacities and provision for adaptation to soil surface relief. ^ 2 cl, 4 dwg |
