Manual mower. Drawing, description

TOOLS AND MECHANISMS FOR AGRICULTURE
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Manual mower. Drawing, description

Tools and mechanisms for agriculture

Directory / Tools and mechanisms for agriculture

Everyone knows how corn and sunflowers grow. But hardly many people imagine what their cleaning looks like. On large areas, of course, combines and other machines operate, but on small, say, school or experimental plots, lawn shears are still used to this day. However, such work is very tiring and, most importantly, unproductive. Our young technicians Tolya Sinkevich and Sasha Ketiya set out to develop a hand-held mower for large-stemmed plants. They came up with a simple and interesting design, which formed the basis of the mechanism. Finally, the mower "taken shape" after a number of improvements and improvements proposed by Sasha Malkov and Sergey Bolgarchuk: now it is a real unit that not only mows, but even carefully lays down cut plants.

Hand mower

They are beveled with the help of two metal circular knives with counter rotation. The knives are driven by two gearboxes - gears with intersecting shafts and a chain drive from the drive wheel sprocket when pushing the mower.

Manual mower for large stem plants and its kinematic diagram (click to enlarge): 1 - disc knife, 2 - disc knife gearbox, 3 - mower support wheel, 4 - disc knife chain, 5 - frame, b - pick-up cage, 7 - drive wheel, 8 - stand thrust, 9 - stand reducer, 10 - mower handle, 11 - sprocket of pick-up control mechanism, 12 - control mechanism chain, 13 - control unit

To collect beveled stems, a pick-up with a cage welded from metal bars is designed, on which cut plants fall. There is also a pick-up control mechanism: a chain drive, a gear reducer and a pair of right-angled rods acting like a crank. The deviation of the handle of the control unit is transmitted with the help of a chain, gearbox and rods to the cage: it leans to the side, and the stems fall off it. By moving the handle in the opposite direction, you can return the cage to its place.

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