DEVICE FOR SOIL TILLAGE IN ROWS OF PERENNIAL PLANTATIONS

摘要

Usage: care for perennial plantings mi. The essence of the invention: the device comprises a control valve 7, the housing having four diametrically opposite openings 19 and 17. 18. 20 and the spool 14 with two arcuate channels 21 and 22 of different lengths. The central housing part 2 is a shaft mounted with a further abutment for engagement with the frame. The probe 11 is kinematically coupled with the output shaft 2. When in strip mezhshtambovuyu additional shaft contacts the stop frame and turning the spool 14 to a position at which the piston chamber of the hydraulic cylinder 3 is locked, which allows the actuator to hold in its extended position, and the pressure and return apertures 17 and 18 communicate Ka, nalom 21, thereby unloading the hydraulic system. 1 ZP f ly-3-yl.