COMBINATION TILLER FOR CULTIVATION OF ROW MIDDLES AND ROWS OF PERENNIAL PLANTS Russian patent published in 1995 - IPC

FIELD: agricultural engineering. SUBSTANCE: tiller has disk gangs 2, sweeps 3 and chisels 4 and controlled turnable flat hoes 5 with piece 6, all arranged in tandem on frame 1. Flat hoes 5 are connected with frame 1 by means of vertical hinge joint 7 and are loaded by spring 8 relative to frame 1 by means of front bracket 10 rigidly connected to standard 9 of flat hoe 5. Chisel 4 is arranged in one plane with flat hoe 5 behind standard 9 of flat hoe 5. Extreme disks 11 of each disk gang 2 are installed at each side of tool with overlapping equal to or greater than width of inner wing 12 of symmetrical flat hoe 5. Main chisel 4 and additional chisel 13 are installed on one half of width 0.5 B of flat hoe 5 behind its inner wing 12. Inner chisel 13 has standard with operating length exceeding that of operating length of standard of chisel 4 and it is installed at a distance from nose of flat hoe 5 equal to 1.63 B. Angle between horizontal and straight lines connecting noses of flat hoe 5 and chisel 4 is equal to 6-16 degrees and that between lines connecting nose of chisel 13 is equal to 6-14 degrees. Chisel 4 is located at distance of 0.89 B from nose of flat hoe 5. Plane of cutting of extreme disk 11, depending on angle of incidence of disk gang, can be located at distance of (0.3-0.4)B. Length of front bracket 10 of flat hoe 5 whose standard 9 thrusts against hoe turning stop and length of rear bracket 17 are equal to 0.14 B. To kill pushes of spring 8 transmitted to hoe 5 its standard 9 has device in form of rectangular trapezium, 0.1 B in height, where B is width of symmetrical turnable flat hoe 5. Device is rigidly coupled with shoe connected to standard 9 of flat hoe 5. EFFECT: enlarged operating capabilities. 2 dwg