Features of creating a potato digger for a walk-behind tractor

A good harvest with minimal losses is important for both farmers and summer residents. If the plot is quite large, then a potato digger can come to the aid of harvesting potatoes. Prices for a potato digger can range from 6.5 to 13 thousand rubles. It makes sense to make a potato digger on your own for small sown areas. Industrial equipment is usually bought from various trading platforms.

For work, you will need the following materials and tools:

• alloy steel pipes with a diameter of 4 cm;
• corners of the "six";
• reinforcement with a thickness of 10 mm;
• chain;
• gears;

• turbine;
• welder;
• adjustable wrench;
• drill;
• bolts with nuts and lock washers.

Good steel is essential for making a share - it should be quite thick (at least 4 mm). The design has a welded frame, suspension, rods, which will allow you to adjust the dynamic elements - wheels and hooks.

Making the unit yourself is not particularly difficult. Such a potato digger can really be used on any, even very dense soils.

The craftsmen independently design two types of potato diggers.

• fan-shaped;
• thundering.

The situation with the creation of conveyor and drum units is a little more complicated, since their designs will be a little more complicated, but it is quite possible to implement the creation of such units technically.

If you have to harvest on vast areas, then you should pay attention to a roaring or conveyor potato digger. For a summer cottage or garden plot of 10 acres, a fan digger may well be suitable.

Drawings of a potato digger are drawn up by analogy with diagrams that are easy to find on the Internet. When buying a walk-behind tractor, an operating manual is attached, which indicates the dimensions and other parameters of the attachment (weight, digging depth). Based on these data, you can find the necessary information and, on its basis, compose your own version of the potato unit. This option seems to be very rational, since each walk-behind tractor has its own characteristics.

The algorithm for creating an aggregate is as follows: a pipe with a diameter of 45 mm is sawn into four parts. For example, this can be done in this way: two pieces of pipe measuring 1205 mm each and two pieces of 805 mm each. Then a rectangle is drawn up on a flat plane, the joints are welded by welding. Jumpers are also welded, which will serve as control rods. Then it is necessary to create vertical mounts - they will ensure the installation of vertical rods, which are responsible for control.

After that, the racks are attached, which must hold the vertical load. The lintels are attached at a slight distance from the edge of the frame. The squares should have dimensions 35x35 mm, and the length should be 50 cm. The racks are connected to each other with jumpers.

Then you need to install the shaft. Stainless steel sheets are used, the thickness of which should be 0.4 mm. The sheets are bonded to each other by welding.After that, it is the turn of the rods - they will implement the work of the "strainers". This technique makes it possible to effectively harvest a good harvest of root crops in the shortest possible time.

The standard design consists of the following elements:

• metal frame (from pipes or corners);
• plow - cutter;
• device that transports the product;
• connecting pulley;
• connecting rod;
• drive belt;
• support rack;
• wheels;
• springs;
• bevel gear transmission belt.

The fan digger is attached to the unit (it is also called the "arrow" and "foot"). In the professional language, such a unit is called "dolphin", due to the corresponding shape of the plow - a plowshare. The device of this unit is not complicated, while it has quite good performance. You can make such a unit with your own hands in a short period of time.

Principle of operation: the cutter opens the earthen layer, the roots roll onto the reinforcement, move along it. During this "journey", the tubers are cleared of soil. Before the start of harvesting, all vegetation must be removed without fail. To make such a structure, you will need the following tools and materials:

• turbine;
• welder;
• drill;

• hammer;
• set of drills;
• roulette;
• marker;
• bolts;
• nippers or pliers;
• steel sheet 3 mm thick - it is necessary to make a ploughshare from it;

• bolts (10 mm);
• rectangular profile;
• steel sheet to create a rack;
• bracket;
• reinforcement (10 mm).

There are times when the reinforcement is bent in the form of steps. A holder-stand is attached to the share itself, the height of which depends on the design of the walk-behind tractor. The tine can be welded to the plow itself, without bolting.

Among the shortcomings, we can mention the relatively narrow strip of cultivated land - it is only 30 cm.

The screening mechanism is based on the vibration principle and consists of a share and a sieve.

With the help of a ploughshare - a "knife", sunk in the ground to a depth of 25 cm, a layer of earth is undermined together with root crops. Soil with tubers remains on the grate. Due to vibration impulses, the soil flies around the tubers and rolls down, and the peeled potatoes enter the container.

The scheme is effective, but it is technically quite difficult to make such a unit, since certain qualifications are needed.

The design consists of three blocks:

• knife;
• dynamic grilles;
• frames.

You will need the following tool:

• drill;
• hammer;
• set of drills;
• bolts;
• nippers or pliers;
• reinforcement (10 mm);
• hinges;
• eccentric;
• marker.

First, the profile of the required dimensions is cut to make the frame, which is then welded. Supports are mounted from below, wheels are put on them. In the frame itself, the hinge fasteners are mounted on which the screen is placed.

Fasteners are welded to the frame - a gearbox is placed on them, special devices that provide vibration. The mesh of the box is welded from the reinforcement, which is fixed inside the frame. A gearbox is installed - it provides the required vibration. It is connected to a rumble. Through the lever device and the connecting rod, the impulse from the rotation of the shaft is fed to the screen, as a result of which vibrating impulses arise that generate rotational movements of the eccentric.

A ploughshare is cut out of steel, which is attached to the bottom of the frame. Wheels are attached to the unit. The knife can be both concave and slightly convex.

The cutter lifts the soil with root crops, after which they fall into a roar, along which they roll, freeing themselves from the ground. Then the tubers fall from the surface of the trellis to the ground. The advantage of this device is that the gripping takes place with a width of 0.45 meters. The depth of penetration into the ground is almost 0.3 meters. The yield loss is relatively small - up to 10%.

The disadvantages of the unit are that there is increased vibration, which is transmitted to the operator, and this gets tired quite quickly. Also, before starting work, all tops should be removed from the site in order to ensure the normal passability of the walk-behind tractor. In some cases, vibration is reduced by installing two eccentrics.

Self-made conveyor potato digger can be of different sizes. These units are usually large in size to handle large areas of cultivation. To work on a personal plot, there are enough small potato diggers, which it is not very difficult to do with your own hands. The principle of operation is simple: the tubers are removed from the soil and fed to the separator via a conveyor belt.

The tape itself is a grid, which is made of reinforcement welded in parallel. It is attached to a movable conveyor belt. Also, the tape is made of mesh and rubber, which is attached to dense fabric. The soil adhering to the tubers, separating, falls, and the potatoes enter the storage.

The conveyor moves as a result of the rotation of the shaft, which is attached to the walk-behind tractor.

In this case, the following elements are used:

• reducer;
• chain;
• gears.

The cutter is a crescent-shaped metal tool. It sinks into the ground by almost 20 cm. Such a device works much "cleaner", the unharvested crop remains in the fields no more than 5%. The cutter is fastened using bolts with lock washers.

Before you start making a potato digger, you need to think about the question of whether you have practical skills. You should also carefully read the drawings - there are a huge number of them on the Internet.

The main elements of a potato digger:

• welded skeleton - made from a profile;
• steel cutter;
• rollers that ensure the movement of the tape;
• assembly from steel strip reinforcement;
• fasteners.

The "drum" potato digger has successfully proven itself in the processing of vast areas.

The apparatus is made of the following elements:

• skeleton with wheels in the form of a frame;
• cutter knife;
• containers in the form of a drum, which is made of reinforcement.

The cutter is mounted to the base using special hinges. Its function is to remove soil below the tubers that enter the rotating container. The spinning hollow container allows the soil to be freed from the tubers that remain in the container. Then the vegetables move to the end of the container and fall on the ground in a peeled form.

The drum is attached by means of a gear train and a reducer to the tractor shaft - it receives a torque impulse from it. The crescent cutter allows the soil to be opened to a decent depth, which ensures the preservation of the crop. Such a device provides insignificant yield losses; tubers are also practically not subject to mechanical defects.

Different units may be suitable for different motoblocks. If the walk-behind tractor has a mass of up to 150 kg, then it can be used on a par with ordinary potato diggers.The potato digger moves around the area at a minimum speed, so the unit must have sufficient pulling power.

Not every engine will be able to "keep" the minimum speed - gasoline power plants often stall at a speed of 1-2 kilometers per hour. Diesel walk-behind tractors cope better with such tasks - such devices are suitable for vibration units of average parameters. Heavy motoblocks can work with any type of aggregate. Based on the parameters of the walk-behind tractor, you can select the desired unit.

The walk-behind tractor can have both a universal mount and only attach to a certain type of mechanism. Vibrating diggers are commonly used.

When creating a potato digger (or buying one), consider the width of the cultivated soil strip and the depth. The speed of the device usually does not exceed two kilometers per hour - this is the maximum value.

It is also worth considering the quality and nature of the soil on the site. For example, the KKM potato digger can work only with soils, the moisture content of which does not exceed 30%. Typically, the productivity of a potato digger is no more than 0.21 hectares per hour.

For information on how to make a potato digger with your own hands, see the next video.