WORKING TOOL FOR DIGGING MACHINE Russian patent published in 2003 - IPC

FIELD: agricultural and forestry engineering. SUBSTANCE: working tool has share connected through suspension to frame of digging machine and through connecting rod to eccentric drive. Double-armed lever is mounted through pivot joint on frame. One arm of lever is coupled through tie rod to connecting rod. Pivot hinge mounted on grid provides for connection of grid through intermediate link to lever second arm. Turnbuckle is built into intermediate link. Pivot joints are mounted for longitudinal repositioning thereof. Root layer dug by active share is scattered on grid and vertical vibratory motions are transmitted to grid. For changing grid vibration amplitude, pivot joints are moved to other position. Length of link is adjusted by turnbuckle. Working tool of such construction allows lever and link to be aligned after amplitude has been adjusted to provide for keeping grid vibration amplitude. Working tool may be used for digging out planting material in seedling nursery. EFFECT: increased efficiency in soil tillage and simplified construction. 1 dwg