SAFETY DEVICE OF TILLAGE TOOL Russian patent published in 2013 - IPC A01B61/04 

FIELD: agriculture.

SUBSTANCE: invention relates to forestry and agricultural machinery industry, in particular, safety devices for tillage tools for soil treatment. The device comprises a cylindrical housing with a rod. A compression spring is placed in the rod. Inside the rod an automobile-type shock-absorber of stretching is located. At the end of the rod a disc working element is mounted. The rod has screw ledges. The rollers with rims are rolled off on the ledges. The rollers are mounted in the cylindrical housing. At full compression and extension of the spring the blow of the rod on the cylindrical housing is absorbed due to the buffer rings.

EFFECT: invention enables to increase the coefficient of efficiency of the safety device actuation, to reduce shock loads and to increase the reliability of the tool.

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