The invention relates to agricultural engineering. Flexible rotary harrow comprises designed for installation on a vehicle frame with mounted thereon rotatably flexible chain element consisting of at least two modules in each link which are fixed teeth, and on the frame via at least one horizontal arm mounted pivotable U-shaped frame module flexible chain member, rotation of which is realized by means of pivots, the frame module disposed at an angle to the direction of movement of the harrow each frame is a flexible chain element module has the ability to change the length and comprises a flexible chain member rotation of which is provided by the hub the teeth are rigidly fixed crosswise on each link of a flexible chain member. U-shaped frame modules flexible chain member may be arranged in parallel or nonparallel to each other. The number of teeth on each link of the chain element can be from two to eight. The teeth of the chain element can be made straight and / or curved and / or bending and / or curved. The teeth of curved and / or with a bending may have a bend radially towards the rotation harrows or in the opposite direction. The cross section of the teeth of the chain member may have the shape of a regular polyhedron. The teeth of the chain elements at both ends can have a bevel cut at an acute angle. Module frame can also be connected with one of the horizontal arms or harrow frame via at least one spring. Changing the frame length unit can be performed via a hinge assembly with the spring element or by a telescopic assembly, fixing the desired length of the module frame by means of a lanyard. Frames modules can be attached to the frame also via brackets parallelogram system. The technical result - improved efficiency, productivity and quality of handling cultural, stony and schebenchatyh soil and irrigated and non-irrigated soils.Полезная модель относится к сельскохозяйственному машиностроению. Гибкая вращающаяся борона содержит предназначенную для установ
