SPRING HARROW Russian patent published in 2012 - IPC A01B19/02 A01B23/02 

FIELD: agriculture.

SUBSTANCE: invention relates to agricultural machinery, in particular, to spring harrows, and can be used for early spring closing of moisture and care for the winter crops. The harrow comprises the main beam with supporting wheels and hingedly hung sections. The sections consist of a welded frame with lockable axles. On the axes the twisted spring teeth are mounted checkerboard. The teeth contain mounting, core and working parts. The working part is made with the inclination forward of the end in a longitudinal vertical plane. The working part of the tooth is additionally bent in the longitudinal vertical plane of the radius. The end of the working part of the tooth is bent forward at such angle that at the smallest inclination of the core part of the tooth its end provides for maximum penetration into the soil. Deepening of the tooth into the soil is regulated by both supporting wheels, and the inclination of the tooth.

EFFECT: constructive implementation enables to optimise the required qualitative characteristics for specific soil and climatic conditions and cultures of crop rotation at the lowest operational and technological costs.

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