Lawn mower GK-1. Drawing, description

TOOLS AND MECHANISMS FOR AGRICULTURE
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Lawn mower GK-1. Drawing, description

Tools and mechanisms for agriculture

Directory / Tools and mechanisms for agriculture

The abbreviation in the title is clear: GK - lawn mower; the unit denotes the width of the capture - one meter. So, without any special claims, young technicians from the city of Mikhailovna, Volgograd Region, named their car with an electric drive. "Our mower," the guys write, "last year won first place at the regional competition "Young Innovators for the Village", and third at the All-Russian Meeting of Student Brigades in Voronezh."

Lawn mower GK-1

Indeed, the unit is simple in design and maintenance, maneuverable and, which is also important, made of decommissioned parts and assemblies of old combines. The guys say this about the performance of the mower: "You can mow grass from an area of 2,5 hectares in a day."

The head of young technicians from the Mikhailovsky training and production plant, Vladimir Ivanovich Popov, introduces the design of the GK-1 lawn mower.

In appearance, it resembles a small cart with wheels from a moped, rigidly connected by a piece of an inch pipe. Management - a long handle-carrier, as young designers call it. At the lower end of the carrier, near the ground itself, there is a frame made of sheet steel, which is somewhat forward, with nodes and mechanisms fixed on it that are directly involved in mowing: this is an engine, a cutting device, a transmission.

The engine on the GK-1 is electric with a power of 500 W from the Don pump. It can be moved in the grooves of the frame, which allows you to adjust the tension of the drive belt. The electric starting part is also taken from the pump. She is placed on the carrier. (Remember: the mower handles must be insulated for safety reasons, for example, they can be put on pieces of rubber hose; in addition, you must run the ground wire!).

For the manufacture of the cutting unit, we used segments of knives and parts of the backs, as well as sections of fingers from harvesters that have served their time. So, we made the skin of a silo combine from the back of the bearing finger beam, welding the same back at an angle of 90 ° from its back side for rigidity. Seven sections of fingers were used from the header of the grain combine: they were fixed with M12 bolts on the carrier bar as fixed teeth. Parts for the movable - cutting part were taken from her. 13 segments of the knife went into this: they were enough to make the grip about a meter. Only the presser feet are designed and manufactured by ourselves.

Lawn mower GK-1 and its kinematic diagram (click to enlarge): 1 - wheel, 2 - electric motor, 3 - carrier, 4 - frame, 5 - electrical connector, 6 - bearing housing of the driven shaft, 7 - remote control, 8 - mounting clamp, 9 - pad, 10 - bearing finger bar, 11 - movable knife, 12 - support wheel, 13 - drive pulley Ø 60 mm, 14 - belt, 15 - driven pulley Ø 150 mm, 16 - connecting rod, 17 - leash, 18 - ground wire, A - kinematic diagram of the drive.

The kinematics of the mower is simple: the transmission from the pulley drive shaft to the driven one is V-belt; both pulleys are cantilevered on the shafts. An eccentric is placed on the outer surface of the driven shaft, which communicates movement to the movable skin with the help of a connecting rod - the rotation of the motor shaft is thus converted into a reciprocating movement of the knife, which mows the ladder; its working stroke is 76 mm.

At the edge of the cutting unit, a support wheel is placed, which facilitates the control of the mower. It also helps to keep the mowing height constant.

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