CULTIVATOR OF “EUREKA”

Categories Small-scale mechanization
CULTIVATOR OF No doubt, the motor-plow or microtracker in the farm economy — assistant-all-trades. But where the plot-all small, and the garden trees and shrubs planted densely enough, the walk-behind combustion engine just to turn around. Here and come to the rescue of a simple, but very effective! the cultivator on the basis of the motor from the washing machine. Its working wheel with long narrow teeth perfectly reserves the loosened strip of land width of about 120 mm at a depth of pereopisanie to 150 mm.

And the overall layout of the design ensures the minimum width of the working unit (without handles) — 175 mm. this makes It easy to maneuver in mezhdureche, on narrow plots of land along the house, between the bushes — that is, where previously could be used only hand tools.
 
The main working body of the cultivator — steel drum Ø 200 mm, which is welded circumferentially narrow saber-like teeth. Wiring them all (like the teeth of circular saw blades) ensures uniform loosening of the soil across the width of the treated strip.
The frame forms a U-shape steel pipe with outer diameter 20— 25 mm. below it the segments are welded steel corners 25х40 mm, servants brackets for the axle and bolts which secure the bearing plates of the motor. From the top to the longitudinal parts of the frame are attached by bolts or welded arm bent from a pipe of the same diameter.
 
The transfer of torque from the engine is carried out using a two-step belt-chain transmission with a total gear ratio of about 35, which allows to use the motor power of only 0,125 kW. With the output shaft via a pulley Ø 40 mm is transmitted to the pulley Ø 300 mm, mounted on the intermediate shaft, the second shank of which through the sprocket from the moped Z=10 — sprocket Z2=41, fixedly mounted on the impeller.
 
Fig. 1. Electrochlorinator
 
Fig. 1. Electrochlorinator:
 
1 — pen, 2 — base plate, motor, 3 — pulley of the electric motor, 4 — strainer, 5 — a pulley of the intermediate shaft 6 — chain. 7 — the teeth of the impeller. 8 — dirt-vents, the 9 — bracket. 10 — electric motor. 11 — side base plate. 12 — impeller, 13 — horizontal cross member of the frame, tube Ø 25 mm.

 
Fig. 2. Kinematics
 
Fig. 2. Kinematics:
 
1 — engine, 2 — pulley, Ø 40mm, 3 — a pulley of the intermediate shaft, Ø 300 mm, 4 — the bearing of the intermediate shaft 5 intermediate shaft sprocket Z1=10, 6 — wheel sprocket, Z2=41, 7— the bearing of the impeller.

 
Fig. 3. Podshipnikoviy node of the impeller
 
Fig. 3. The bearing of the impeller:
 
1 — bracket. 2 — cotter pin. 3 — wheel, 4 — puck. 5 — thrust bearing. 6 — bearing No. 204, 7 — hub sprocket. 8 — star, 9 — reel wheel.

 
Fig. 4. The bearing of the intermediate shaft
 
Fig. 4. Bearing Assembly intermediate shaft:
 
1 — pulley, 2 — shaft, 3 — body, 4 bearing No. 202, 5 — Bush sprockets, 6 — star, 7 — pin. 8 — bearing plate of the motor.

 
The motor and housing the bearing unit in the intermediate shaft are mounted on a supporting steel plate with a thickness of 3-4 mm. the Necessary rigidity gives her a second l-shaped plate, connected at the top. At the bottom of both plates are connected with the area of the frame with two bolts and have the opportunity to turn around a common axis to adjust the chain tension. Fixed power node special screw.
 
To wet clay soil gets stuck between the teeth, to the front horizontal cross member of the frame is welded tangentially touching on the drum wheel two tubes that serve as a cleaner.
 
Yuri GRIGORIEV, Chimkent

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