GARDEN MINI

MINI GARDENAmateur designers sometimes even adulthood may surprise the naive, and young, on the contrary, thoughtful and original solutions. And as an interesting personality, whose signature is a brief article describing the construction.

Stanislav GORYACHEV thought of his mini-tractor when he was 17 years old. Then started assembling. Collected, as he writes, “two summers”. Had to work from morning to evening. Thanks to the moral and material support of the parents (the father, for example, helped to sharpen and welding many of the details) the case was able to finish. The tractor, which Stanislav called “Asorensen”, helped the family work on the plot.
The most remarkable thing is that the young designer, having separate units, required for tractor traditional schemes, we decided to simplify the design, believing that only practice will confirm or refute his calculations. Practice has confirmed, and now Stanislav is sure a mini-tractor designed to work in the garden, may be like “Ocarinas,” simple, cheap and reliable.
 
Now Sergei Goryachev already a fifth-year student of the pedagogical University. However, the workload of studies does not prevent him to continue the job. Inspired with success, in addition to the existing set of implements — plough, harrow and mouldboard — made potato with independent drive of the conveyor. We agreed that the description of the potato digger Stanislav’ll send to the editors later. First, what constitutes his “Ocarinas”.
has no differential, instead — a simple bevel gearbox with three shafts: one input and two output. The input is attached to the main gearbox (tight coupling) output — rear wheel bushings and bolts M10. Wheel diameter — 800 mm. They consist of steel corrugated about-Dov with the grouser, steel spokes and flanges, welded steel discs, bushings and reinforcing gussets. Wheels of this design are not designed for riding on asphalt, only on the ground.
 
The presence of two transmissions — motor and chassis — allows you to get a wide range of speeds the mini-tractor both forward and backward. Technique shift two levers is not very complicated and does not require separate description.
 
Cable winch is designed for those occasions when you need to get to the root to drag the boulder to move some more weight, and when it is more convenient or easier to work with separate plow or harrow. It is mounted on a mini-tractor at the end of the Assembly. It makes it easier to implement the adjustment of a chain drive. In working condition the chain and frame of the guide rollers with the winch removed.
 
Mini-tractor
 
Mini-tractor “Ocarinas”:
I — front axle, 2 — glove compartment, 3 — engine, 4 — fuel tank 5 — steering column 6 — the lever of a gear box of motor, 7 — the lever of a gear box chassis, 8 — arm lift, 9 — lift mounted (trailer) guns, 10 — gear rear axle, 11 — way transmission, 12 — clutch 13 — cable drum winch, 14 — Rama.

 
 
Frame
 
Frame:
1 — cross member (area 40x40x4), 2 — I-beam mounting front axle (angles 50x50x5), 3 — I-beam engine mounts (angles 50x50x5), 4 — side rail (2 PCs), 5 — square scarf (2 piece), 6 — brace (2 PCs, angle 25x25x3), 7, 10 — brackets lift attachments (angles 40x40x4), 8 — lodgements of fastening of a reducer of the rear bridge (angles 50x50x5), 9 — I-beam mount suspension transmission (angles 50x50x5).

 
Placement of basic units on the frame
 
The placement of basic units on the frame:
1 — frame, 2 gear rear axle, 3 way gearbox, 4 — frame winch, 5 — engine subframe, 6 — engine.

 
 
 
Engine cradle.
 
Engine subframe.
 
 
Scheme of transmission
 
Scheme of transmission:
1 —engine, 2 — unit intermediate sprocket, 3 way gearbox, 4 — clutch rear axle 5 — gear rear axle.

 
 
Front axle
Front axle:
The I — wheel, 2 — right plug, 3 — pin, 4 — eyes, 5 — beam, 6 — axis bridge, 7 — the bearing housing suspension (2 PCs), 8 — steering gear, 9 — steering column, 10 — lower tie rod, II — the left fork, 12 — bearing housing and the steering Pitman arm (2 PCs), 13 — a Pitman arm 14 — upper steering rod.

 
 
The scheme of a joint of the reducer of the rear bridge wheels (front right wheel is not shown)
 
The scheme of connections of the gearbox, rear axle wheels (front right wheel is not shown):
1 — reducer, 2 — output shaft gear 3 — bolt M10, 4 — flange wheel, 5 — wheel, 6 — bushing flange.
 

 
 
The winch engine (conventionally not shown)
 
Windlass (motor is not shown):
I — cable drum, 2 — wire, 3 — removable guide roller frame, 4 — frame hoist, 5 chain tensioner (2 PCs), 6 — frame mini-tractors, 7 — chain drive, 8 — way transmission.

 
 
 
Diagram of the drive cable winch
 
Diagram of the drive cable winch:
1 — sprocket (z= 12) on the output shaft of the engine, 2 — chain drive, 3 — large (z=35) star, 4 — low (z=20) sprocket, 5 — rope drum winch with the driven sprocket (z=36).
 
 
 
Cable drum winch
 
Cable drum winch:
1 — the drum housing, 2 — axis, 3 — the bearing housing (2 PCs), 4 — the bearing №202 (2 PCs), 5 — sleeve, 6 — sprocket driven (z=36).

 
 
Lift mounted (towed) guns (the right wheel is not shown)
 
Lift mounted (towed) guns (the right wheel is not shown):
1 — arm lift, 2 — thrust, 3 — bracket-limiter, 4 — RAM lift, 5 — tow, 6 — traverse 7 — pin-retainer.

 
Device attachments that can be used with a winch, has been described in detail in the journal “modelist-Konstruktor”, so I will not repeat.
 
Lift mounted (towed) guns works is simple: squeeze the lever and easily raise the plow from arable land. The depth of plowing is set by the yoke into the bracket-stopper which is fixed a pin. With this lift works well plow of walking tractor MTZ-05.
 
And the last one. I admit that “Ocarinas” may appeal to some readers, and they, based on my modest experience, will create their own design. I would be glad if this publication will help them.

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