COUPLING DEVICE FOR CONNECTION OF ADJOINING AGRICULTURAL OUTFITS, FOR EXAMPLE SEEDERS, AGGREGATED WITH FRONTAL HITCH (VERSIONS) Russian patent published in 2009 - IPC A01B59/48 

FIELD: agriculture.

SUBSTANCE: device as per the first invention has a body, the first and the second end parts pivotally linked by clamping devices with adjacent tools. Pivot connections are made with a capability of body rotation against their longitudinal axes, parallel to the direction of straight line horizontal movement of tools. Pivot connection of the first end part of the body is made to prevent rotation of the body against the vertical axis, crossing longitudinal axis of the present pivot connection. Pivot connection of the second end part of the body allows rotation of the body against vertical and horizontal - cross axes of the pivot connection. Device as per the second invention contains a pin-shaped body, ends whereof are linked with pivot connections with adjoining tools. Pivot connections allow rotation of the rod-shape body against its longitudinal axes, parallel to the direction of straight line movement of tools, and against vertical axes. It has a second body in the form of a rod with pivot connections and mounting blocks connecting the device to the adjoining tools, similar to the first body. In the operational state the first and the second above said bodies in the top plan view are not set parallel to each other. Pivot connections of the first and the second rod-shaped bodies are made spherical.

EFFECT: device as per each of the inventions enables connected tools to freely resemble soil surface and to maintain interval between them within the set range preventing faults.

6 cl, 5 dwg