OA21196A - Mini tractor. - Google Patents

Abstract

The present invention relates to a tractor which allows a field to be plowed by attaching a plow to it. In addition, it can also tow a relatively medium-sized dumpster. It consists of a chassis (16) on which the engine (7) and the gearbox (13) rest. Transmission between the engine (7) and the gearbox (13) is ensured by a pulley-belt system. The gearbox (13) is linked to the rear axle (21) by a transmission shaft. A hooking system (20) makes it possible to connect the tractor to the various elements which can be hooked to it.

Description

The present invention relates to a tractor which allows a field to be plowed by attaching a plow to it. The tractor which is the subject of the present invention can also tow a relatively medium-sized skip.

The tractors on the market are not adapted to the Malian economic environment where the price of a tractor remains too high.

The tractor of the present invention is designed entirely from salvaged car parts; it is intended to be less expensive, smaller and more robust.

It also differs above all by its lifting or hanging system which is manual and can be transformed into a hydraulic system subsequently.

One of the differences is also the transmission which is carried out by belt pulley.

The tractor consists of a chassis (16) on which rests the engine (7) as well as the gearbox (13). Transmission between the engine (7) and the gearbox (13) is ensured by a pulley-belt system. The gearbox (13) is linked to the rear axle (21) by a transmission shaft. A hooking system (20) makes it possible to connect the tractor to the various elements which can be hooked to it.

The invention will be better understood through the appended figures.

Figures 6/7 and 7/7 present the following elements:

1- Steering gear

3- Steering wheel

4- Steering stem

7- Motor

8- Brake pedal

9- Clutch pedal

10- Front axle

11- Belt

12- Gearbox pulley

13- Gearbox

14- Motor pulley

15- Lever

16- Chassis

17- Gear lever

18- Front wheel

19- Rear wheel

20- Hanging system

21- Rear deck

Description :

• The present invention relates to a mini agricultural tractor for plowing a field and also capable of towing a relatively medium-sized skip. It is intended to be small, less expensive and adapted to the Malian economic environment. Its small size makes it very handy, so it can even be used for market gardening work.

• Agricultural tractors known on the market are intended for use in large-scale work and are excessively expensive for small-scale operations. In addition, the tractors used are often too bulky to be used in small fields (the most common type of fields in the sub-region). The maintenance of these is also very expensive. Tractors on the market are often too heavy due to their large size. This weight tends to compact the soil, thus leading to a loss of soil fertility and aeration, as well as erosion problems.

• The present invention aims to provide a relatively small and at the same time robust tractor. It’s a tractor made entirely from resized car parts. It mainly consists of a chassis on which the engine, gearbox and passenger compartment components rest. The transmission is pulley-belt type. At the rear, we have a hanging system which allows you to carry various agricultural tools such as ploughs, seeders, tedders, etc.

• Figure 1/7 shows the front view of the tractor, you can clearly see the front wheels, the hood and the roof.

Figure 2/7 is a profile view, it highlights the control lever, the chair and the entire passenger compartment.

Figure 3/7 is a rear view, we cannot see the attachment system, the differential connecting the two rear wheels.

Figure 4/7 is a bottom view, it mainly highlights the system for transmitting power from the engine to the rear wheels via the gearbox.

Figure 5/7 represents the top view, it emphasizes the geometry of the sheet metal of the entire machine.

Figure 6/7 is a 3-dimensional view of the tractor.

Figure 7/7 is an exploded view of the tractor, we can see the different constituent parts of the latter. This view allows you to get an idea of how the tractor is assembled.

• The frame (16) is made of rectangular steel tubes and serves as a support for the other components.

The engine (7) is a 22 horsepower, single-cylinder S1115 engine. The engine is started with a crank. It is linked to the gearbox (13) by a motor pulley (14) with two trapezoidal grooves. On the gearbox side (13), we have a gearbox pulley (12) of larger diameter than the previous one. The two are linked by two V-belts (11).

A gearbox (13) is used to control the power flow of the motor (7). In this tractor, a gearbox from the Mercedes 190 was used and adapted to the machine. A universal joint connects the gearbox via a transmission shaft to the rear axle (21). The rear tires (19) are mounted on the latter. A rear axle from a Mercedes 207 was used for this tractor.

On the front side, the chassis rests on an axle (10) which carries the front tires (18).

The frame of the machine is covered by sheet metal which is divided as follows: the engine is protected by the hood, the machine operator is protected against the sun and bad weather by the roof. The roof is supported on front supports (2) and rear supports (6). A chair (4) ensures operator comfort during operation.

A steering wheel (3) makes it possible to steer the tractor via a steering wheel box which is linked to the front wheels (18)

A hanging system (20) which is similar to a lifting system is attached to the rear part of the machine. This system is manually controlled by a lever (15). The attachment system has small holes which allow various elements to be connected to the tractor.

Claims (6)

1. Mini tractor composed of a chassis (16) on which rests an engine (7) as well as a gearbox (13), a transmission 5 between the engine (7) and the gearbox (13) provided by a pulley-belt system characterized in that the gearbox (13) is linked to a rear axle (21) by a transmission shaft and a hooking system (20) which connects the tractor to the various elements which may be there hooked. io 2. Mini tractor according to claim 1, characterized in that the control of the attachment system is manual. 3. Mini tractor according to claim 1, characterized in that the power transmission is done by pulley-belt. 4. Mini tractor according to claim 1, characterized in that the gearbox 15 is a gearbox from the readapted Mercedes 190. 5. Mini tractor according to claim 1, characterized by a rear axle of a readapted Mercedes 190. 6. Mini tractor according to claim 1, the power is provided by a 22 horsepower S1115 engine.