Three-row modernized PM disc harrow with a bearing assembly inside the disc sphere, with discs on an individual stand, with a change in the angle of attack of the discs synchronously in each row, is designed for surface tillage to a depth of 17 cm, weed control and crop residues. Due to the uniform mixing of the earth with plant residues, the use of a disc harrow is effective on soils subject to wind and water erosion. Plant residues, evenly mixed with the top layer of soil, protect the soil from blowing and washing out, improve air exchange. At the same time, plant residues, being in the ground, actively turn into humus, increasing soil fertility.
The three-row disc harrow is used in various agro-climatic zones of Russia, on all types of soils, except for stony ones. The use of a three-row harrow is effective for introducing fallow lands into circulation, basic and pre-sowing cultivation in the system of minimum tillage, rejuvenation of degrading meadows and pastures.
Features of 3-row PM harrows in comparison with 2- and 4-row harrows:
Four-row harrows have a rather small distance between rows - 675mm. This distance is limited by the possibility of transporting all-frame structures to the consumer. As a result, the ground thrown up by the front rows of discs interferes with the operation of subsequent rows of discs. To prevent clogging of the tool, you have to either reduce the speed or reduce the depth of processing. For three-row implements, the distance between the discs in a row decreased to 350mm, but the distance between the rows increased significantly, up to 950mm. The working width for each disc and the clearance between discs is exactly the same for three rows as for four rows. Therefore, a three-row harrow, as well as a four-row harrow, is able to work in fields with large weeds and to great depths.
The distance between the first and last row in a three-row is the same as in a four-row. The frame developed in length helps to smooth out small irregularities in the field. Three-rows are also excellent planners, they easily smooth out pile ridges, breakup furrows, deep ruts, molehills, etc. Thus, a three-row harrow is indispensable for putting fallow lands into circulation.
The main advantages of 3-row implements over competitors:
1. In BDT-AGRO, research was carried out, a new, rational arrangement of disks was developed and repeatedly tested. The distance in a row for three-row rows was 350 mm. This made it possible to reduce the power of the tractor and save up to 12% of fuel compared to implements of similar width from other manufacturers, without compromising the quality of tillage.
2. For BDT-AGRO implements, the disc rack has a channel and a groove for lubrication. It is enough to lubricate once a season, so each tool is equipped with only one special bolt with an oiler. In emergency cases, you can unscrew the rack mounting bolt, apply grease and push it into the connection when tightening the same bolt. This greatly improved the performance of the connection and dismantling of the rack.
3. All implements are equipped as standard with a mechanism for adjusting the working depth (track roller). At the same time, the rollers located behind the chassis are adjusted using spring shock absorbers, which significantly reduces the load on the implement when working on uneven terrain and when the tractor is galloping.
4. Folding implements up to 6m wide have a transport width of 2.55m. This allows you to drive on public roads unaccompanied.
5. A common disadvantage of all disc harrows is that the outer disc of the last row leaves behind an open deep furrow. On the implements of BDT-AGRO LLC, the last stand of the last row is 40 mm shorter than the other stands. As a result of this, the outer disc of the last row is 40 mm higher than the other discs. Therefore, it leaves a shallow furrow, although it undercuts, crushes and discards enough earth to cover the furrows left by the front row discs and the own row discs. The final leveling of the field is carried out by a packer. Thus, the patented design solution used on the implements of BDT-AGRO LLC improves the quality of field processing.
In anticipation of field work, the article will help to reveal the technical potential of the disc harrow BDT 3, the photo of which you see, and also introduces the opinion of the owners of the equipment. The material contains prices for the BDT 3 product and video and photographic materials are used.
Perhaps familiarity with the technical indicators of the harrow will come in handy in the future. A video about the operation of the disc harrow BDT 3 is at the end of the article.
Purpose and device of the disc harrow BDT 3
After harvesting grain crops, soil layers are used to develop soil layers. They are also used to cultivate virgin lands. They cut the land after plowing and prepare it for the sowing campaign. Possibly an effective application for stubble cultivation and maintenance of meadows and pastures. Its use is not limited by anything, so the harrow is used in all soil and climatic zones.
The trailed unit in question is used in two positions.
- In transport position.
- And in working order.
Disc harrow BDT 3 specifications
Mounted, with a hydraulic control system, BDT 3, with a working width of 3.6 meters aggregates with tractors of the 3rd and 4th classes. It enters the topsoil at a maximum of 200 mm. In one hour, it can process from 2.5-3 hectares of land.
The angle of attack of disk batteries is respectively 6 0 , 10 0 , 14 0 , 18 0 . The dimensions of the disc harrow are L/W/H = 4800/3000/1520 mm; tire sizes of transport wheels in terms of 6.5-16 inches. In addition, you should be satisfied with the soil penetration indicators:
- When peeling stubble 200 mm.
- After plowing 120 mm.
- On peatlands in three passes of 250 mm.
Reviews of the owners of the disc harrow BDT 3
Many owners have previously used disc harrows to work the land. They say that their penetration into the soil from one pass is deeper than a harrow. But the speed indicators of tillage are slower:
Owners are satisfied with a reliable fixation:
- angle of attack of disk sections;
- side frames of the harrow during transport.
Price for disc harrow BDT 3
Under the order, a harrow can be purchased on the territory of Russia for 250,000.00 rubles. In the secondary market, the cost, depending on the condition and manufacturer, ranges from 175,000.00 - 207,000.00 rubles. the price trend depends on the seasonality of the sale and the region. Price fluctuations can reach almost 100,000.00 rubles.
Summing up, it can be argued that the equipment is reliable and will work for the planned 6 years. Proper maintenance can last much longer. And the possibility of buying out on lease, or purchasing equipment with a deferred payment, enables large farms and farmers to cultivate the soil in a quality manner.
Heavy disc harrow for agricultural work on neglected and plowed lands
Disc harrows are intended for agricultural work on neglected and plowed lands. This equipment perfectly copes with the crushing of blocks and mulching of soddy soils. The working units of this type of agricultural machinery are batteries formed from several rotating disks with a diameter of 400-500 mm. The working elements of the harrow are set at a certain, so-called angle of attack.
A heavy disc harrow is practically not clogged with earth and vegetation, but it is not suitable for heavy soils, since the blades of the working elements quickly fail. Heavy harrows produce tillage to a depth of 200 mm.
Disk device
The working element of this equipment is spherical discs with cutouts that go deep into the ground and crush the stubble. One battery consists of a certain number of discs mounted on one axle. Sections are mounted on a metal chassis in two rows at a certain angle. The batteries of the disker, installed closer to the hitch, carry out tillage in the collapse, and the rear ones - in the stall. For better soil crushing, the working elements of the rear sections should be shifted relative to the front ones. The angle of attack of the batteries, if necessary, is adjustable from 0˚ to 21˚. When working on hard and dry soils, the angles of attack are increased, and when processing light moist soils, on the contrary, they are reduced.
During the movement of agricultural machinery, the working elements, due to their rotation, cut the soil layer with a blade and raise it to the inner surface of the cut-out disk. After the soil falls from a certain height and is thrown to the side. Due to this, the earth is crushed, its partial wrapping and mixing. When the angle of attack is raised, the working elements of the harrow penetrate deeper into the soil and grind it better. Adjustment of the harrowing depth is carried out by setting the required angle and adjusting the pressure force of the disks on the ground. The necessary pressure of the working elements on the soil is adjusted by increasing or decreasing the ballast mass or the compression force of the clamping springs.
Benefits of disc discators
In operation, heavy harrows have a number of advantages in comparison with standard harrows of other types, namely:
- a constant harrowing depth is ensured;
- complete removal of weeds;
- no additional maintenance required;
- quality tillage.
BDT-3
BDT-3 is designed specifically for harrowing fields after harvesting grain crops, cultivating neglected land, soil after plowing and in preparation for sowing. Also, this agricultural machinery can be effectively used for stubble cultivation and care of pasture and meadow areas. The equipment is used in almost all agro-climatic zones.
BDT-3 with a working width of 3.6 m and a hydraulic control system is installed on power units 3 and 4, because on the discator chassis, by means of special fasteners, work sections are installed, which consist of cut-out working elements of a spherical shape, fixed on a common axis. The two front and rear right working sections are equipped with seven discs each, and the rear left has eight working elements. Cleaning of disks is carried out by means of scraper scrapers.
1-coupling; 2-adjustment screw; 3-pneumatic wheel; 4-chassis; 5-lever; 6-thrust; 7-hydraulic cylinders; 8-crank axle; 9-fist; 10-chistik; 11 working sections.
BDT-3 adjustment
Uniform deepening of the working elements of all sections provides adjustment with a device for leveling the chassis. The lever connected to the frame is connected to the hitch by the adjustment screw, and by the rod - to the crankshaft knuckle. As a result of the rotation of the screw, the lever moves the rod, which turns the axle with the harrow support wheels with the help of a fist.
The required harrowing depth is set by changing the angles of attack of the disks by spreading or bringing together the outer ends of the working sections.
When moving to another field, the frame of the discator BDT-3 is transferred to the transport position using hydraulics that lower the wheels.
You can buy this equipment as new, from the manufacturer or dealers who sell agricultural machinery, and already used. By purchasing used equipment and carrying out minor repairs, you can significantly save your money.
Specifications
BDT-7
Harrow BDT-7, as well as BDT-3, is used after plowing virgin lands and heavy soils, for cultivating the land after harvesting, loosening, and early spring harrowing to cover moisture. Also, this agricultural machinery can be used to care for pasture and meadow lands.
The main working units include two additional lifting and main frame, a hitch with pneumatic wheels, sections with discs, a comb cutter, a device for adjusting the angles of attack, a hydraulic system, as well as a mechanism for raising additional frames. Transportation of equipment is carried out with the help of two pneumatic wheels. Moving the equipment to another location must be done with the side frames raised.
On the lower part of the side frames, 4 sections with working elements are installed (2 in front and 2 in the back). The discs are spherical with notches. The depth of tillage is adjusted by changing the angles of attack of the working sections.
You can buy a heavy disc harrow at any specialty farm equipment store or on the Internet, where a wide selection of a wide variety of models is offered.
Disc harrow BDT-7 is a wide-cut tillage machine. It is used in agriculture for processing soil from dense rocks. The device is used after completion of plowing areas and harvesting crops that require large reserves of moisture and nutrients, such as corn, cabbage and potatoes. BDT-7 is suitable for processing pastures and meadows. With this unit, you can:
- mulching;
- development of layers of perennial grasses;
- pre-sowing work with the earth;
- stubble peeling;
- early spring harrowing.
Technical specifications
Specifications for the BDT-7 are provided by the Ukrainian manufacturer Agrotechkomplekt, which specializes in tillage equipment. The working speed of the disc harrow is 6–12 km/h. The productivity of the apparatus is in the range from 5.2 to 7.2 ha/h. Device dimensions: 4560x3800x1640 mm. Between the discs with a diameter of 62.5 cm there is a space of 220 mm. The processing depth of the unit reaches 20 cm.
The mass of the disc harrow BDT-7 is 4280 kg. It can work with various tractors, classes of which are from 1.4 to 4. Models K-700 and T-150 are used. The working width is 7 m. The equipment can reach a maximum transport speed of up to 20 km/h. There is the possibility of adjusting the angle of attack of the batteries. It changes to 12, 15 and 18 degrees. Ground clearance indicators - 25 cm.
The principle of operation of the disk unit
The disc harrow is made of an articulated frame, which contains three sections, a hydraulic drive and a battery of cut-out spherical discs.
To raise the side sections to the transport position, hydraulic cylinders and extensions are used. To do this with the middle sections, the axle of the transport wheels must be rotated.
In order to adjust the depth of processing, the angle of attack of the BDT-7 is changed. It is required to loosen the battery fixing nut. After that, it will be possible to place special pins in the holes that are on the frame bars. Then it is necessary to move the batteries to the extreme position, tighten the nuts and achieve a uniform stroke using the tractor hydraulic system. To do this, you need to change the position of the BDT-7 harrow trailer.
Important mechanisms of tillage machines are harrows, in this article you will learn the principle of the device and operation of the BDT-7 disc harrow, methods for its adjustment, at the end of the material full technical specifications are given.
It is intended for the development of layers after plowing virgin lands, processing heavy soils after harvesting row crops and caring for meadows and pastures. It is aggregated with tractors T-150, T-150K and K-701.
SCHEME AND PRINCIPLE OF OPERATION OF THE DISK HARROW BDT-7
We give a complete diagram and explain the device of the disc harrow BDT-7
1 - left side frame; 2 - pin; 3 - disk left front battery; 4 - middle frame; 5 and 13 - hydraulic cylinders for lifting the side frames; 6 - pipelines; 7 - disk right front battery; 8 - side right frame; 9 - right disc batteries; 10 - stretching; 11 - hinge; 12 - transport, wheel; 14 - crank axle; 15 - hydraulic cylinder for lifting the middle frame; 16 - rear right disk battery; 17 - left rear disk battery (9 disks); 18 - left disk batteries; 19 - brackets; 20 - bracket with slot; 21 - bar of scrapers; 22 - scraper; 23 - intermediate bobbin
Harrow - trailed hydraulic, consists of a hinged three-section frame, eight batteries of cut-out spherical disks installed in two rows, and a hydraulic control mechanism.
The middle frame 4 consists of four longitudinal bars, on which disc batteries 3, 7, 16, 17 are fixed, and two transverse bars, to which side frames 1 and 8 are connected by means of hinges 11 with two disc batteries 9 and 18 on each.
In the transport position, the side sections are lifted by hydraulic cylinders 5 and 13 and fixed with braces 10, and the middle ones - by turning the axis 14 of the transport wheels 12 with the hydraulic cylinder 15.
ADJUSTING THE BDT-7 HARROW
The depth of processing is regulated by changing the angle of attack (12, 15 or 18 °). To change it, loosen the nut securing the batteries to the frame and insert the pins 2 into the corresponding holes on the frame bars; shift the batteries all the way into the pin; tighten the nuts for fastening the batteries to the frame and use the tractor's hydraulic system to achieve uniform travel depth of the front and rear batteries by changing the position of the harrow trailer.
TECHNICAL CHARACTERISTICS BDT-7
- Type hinged with hydraulic control
- Capture width, m 7
- Aggregated with class 3 and 5 tractor
- Maximum processing depth, cm 20
- Productivity per hour of main time, ha 6.0-7.6
- Limits of change of the angle of attack of disk batteries, degrees 12, 15, 18
Dimensions, mm
- length 4380
- width 7250
- height 1100
- ground clearance, mm 250
- harrow weight, kg 3350
- transport wheel tire sizes 6.5-16
- axial clearance in the bearings of the transport wheels of disk batteries, mm 0.1-0.35