Any tracked technique, as in Soviet years, and now, is quite very popular. And no accident, since these machines have high permeability, maneuverability and, of course, high power. In those days, many tracked machines were produced, but the production did not reach all of us until our time. One of the tractors, which is available today is the legendary crawler Dt-75. On the conveyor this car It was delivered back in 1963. Throughout the production of DT-75, there were many different changes regarding both appearance and technical characteristics and additional accommodation. This tractor was developed to perform only agricultural types of work, but due to the high operational characteristics, the purpose of the machine was significantly expanded, as a result of which the tractor began to be used in forestry, utilities, in the detection of earthmoving and road work, industry, as well as in the construction of various objects. Basic model Dt-75 is equipped with a four-cylinder diesel unit of the SMD-14 brand, which is capable of issuing at maximum revolutions crankshaft, Power in 75 horse power. DT-75 tractor has several advantages that were in the first samples, namely this high reliability of all nodes and mechanisms, a simple design, low cost and, most importantly, maintainability. This machine belongs to 3.0 class of traction special technique.
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Purpose
DT-75 tractor does not know impossible works, as it has developed a variety of attached units, which allowed him to take part in almost all spheres.
In rural farms, this machine is used for works such as plowing a field with a variety of density of soil, deep loosening of the soil, cultivation, boroning, ameliorative work, the preparation of the soil to sow, the sowing process itself and much more.
In forestry, the tractor can be used to move logs, which, with the help of a cable or other devices, trailers to the tractor.
In industry, construction and road work, this car performs transport, some earthling, loading and unloading operations. Also can be used in a pair with welding units.
In a communal services, the tractor is used to clear the road sections or other areas from a large snow mass, using the frontal mounted attachment.
Hinged equipment
In order for this tractor to perform all necessary work with maximum efficiency, for him there is a variety optional equipment mounted type. Namely, these are the following attachments:
- Agricultural Plumes, installed, as a rule, on the rear attachment of this machine.
- Hinged cultivators.
- Boroning special units.
- Various front dumps.
- Special traction winches.
- Ripper units, single-to-block type.
- Ripper units, three-rigid type.
- Welding machine.
In addition, this tractor also has many other additional devices that are actively used in various fields of work. And all of the above equipment is only the main and frequently used.
Modifications
DT-75 tractor has suffered a lot of changes for its mass production. Models appeared, both with small modifications and significant modification. In the same line of DT-75, there are the following modified versions:
- Modification of DT-75-M. The assembly of this version was carried out at the Volgograd Tractor Plant, since 1967, later, namely since 1968, production was established at the Pavlodar Tractor Plant. In contrast to this model, the base includes a more powerful power unit of the A-41 brand, which is capable of issuing the maximum power in 66.2 kilowatt or in 90 horsepower. The dimensions, shape and location of the cabin were also changed, it became higher and was shifted to the right, due to this, a 315-liter fuel tank was installed on the left. Appearance It was also a bit changed, namely the roof of the cockpit acquired more rounded shape.
- Modification of DT-75-b. It is a car designed to do various works on a viscous soil or swamps. This model also went from the conveyor of the Volgograd Tractor Plant as the previous one, but appeared only in 1968. In this modification, a finalized basic engine was installed, the power of which was increased to 80 horsepower. The same force unit has the name of the SMD-14ng. The appearance of the tractor is exactly the same as the previous modification, with the exception of overall values. The width of the car was increased to 2240 millimeters by using the binding of spars elongated bars. The caterpillars were also subject to change of their width, resulting in a pressure reached by the tractor on the soil, at 0.24 kilograms per square centimeter. Transmission and power unit are protected by two pallets. This version was installed a four-stage track.
- Modification of DT-75-K. It is an agricultural version, the operation of which occurs on the rises of no more than 20 degrees. Produced by the Volgograd Tractor Plant since 1972. This modification has the same power unit as the previous one, but differs from it a special reference safety device, which allows you to mount tipping on rather uneven surfaces. A pointer was installed in the cockpit, which shows how many degrees the car rolls on the slopes. The cabin also equipped with two seats and a reversing gearbox.
- Modification of DT-75-N. Differs from previous versions only improved fuel system, as well as a power unit. There was an opportunity to adjust the performance fuel pump. The engine was equipped with a turbocharger system that has an effect on power due to the crankshaft revolutions. Its maximum power is 95 horsepower. There were no other significant changes in this version.
- Modification of DT-75-s. The main objectives of this machine are the performance of work. agriculture, loading, earthling, as well as road types of work. This is explained by this version It is adapted for quite large loads due to a powerful V-shaped END-66 engine, which has six cylinders and is able to give the maximum power of 170 horsepower. This engine also has a turbocharged system, which begins to work due to overclocking the impeller of the turbine itself by the exhaust gases of the engine. Dt-75-С is equipped with a two-stage power take-off shaft, a hydrotransformer, oil reservoir of the hydraulic system and a 360 liter fuel tank. It is worth noting that the oil tank and fuel tank are installed on the left relative to the tractor cab.
- Modification of DT-75D. One of two engines was installed on this modification, or A-41, or D-440-22. This tractor model is a bit more economical and more reliable, compared with previous modifications. On board there is a reversive gearbox that allows you to increase the traction force of the machine, but the track and the same task can also cope with the same version, which also enters the package of this version. In addition, the hydraulic control system and drive, traveleau coupling devices, In, rear hide and an extra ballast cargo, which can be removed from the tractor if necessary.
- Modification of DT-75ml. The release of this model was carried out by the Pavlodar Tractor Plant from 1986 to 1991. Dt-75 ML motor compartment received a new facing. The cabin was again subjected to overall changes, as a result of which the tractor height was increased to 2923 millimeters.
Later, various variations of all modifications were made, but the most recent version of this tractor is a modification that received a trade name as agromash 90t. This version is produced since 2009 and equipped diesel engine A-41SI-02, the maximum power of which is 94 horsepower. The appearance of this model was completely changed, but, despite this, the tractor still retained his former versatility.
Specifications
DT-75 tractor has an operating weight of 6950 kilograms, while exploring the average pressure on the soil in 41.5 megapascal. The length of the base version of the tractor with the attachment in the transport position is 4400 millimeters. The width calculated with the edges of the caterpillars is 1850 millimeters. The height of the standard DT-75 is 2710 millimeters. The longitudinal base is 1612 millimeters. Ground clearance It is 380 millimeters. The distance between the caterpillars is 1330 millimeters. The width of each caterpillar has a value of either 390 millimeters, or in 470 millimeters. But it is worth noting that the caterpillars of the marsh version of the tractor have a width of 670 millimeters.
A diesel engine of the SNB-14 is installed on the basic version, which gives the maximum power of 75 horsepower. The checkpoint has eight gears, namely seven gears for the tractor movement forward and one to move backwards. Maximum speed It is 11.2 kilometers per hour, the minimum 5.3 kilometers an hour, when with a reversible gearbox 0.33, and with a leader 3.17. The specific consumption of fuel at the average load on the engine is 175 grams per kilowatt in one hour of work.
Features
Dt-75 tractor has high passable and maneuverable qualities, which made it possible to conquer huge popularity in the spheres of agriculture. But when it became possible to apply a diverse attachment in the process of operation, this tractor expanded its circle and became a popular equipment in forestry, construction of objects or roads, as well as in industry. For all the production time, a fairly large number of different modified versions intended for certain tasks were released. It should also be noted that the DT-75 tractor is easy to operate and further maintain it, has a low cost in comparison with the analogues of the same class, has a large working resource and reliability of all mechanisms, and also it may well boast of its maintainability.
Video
Engine
One of several diesel engines is installed on the DT-75 tractor, namely this is the SMD-14, SMD-14NG, SMD-66, A-41 and A-41SI-02.
- The SMD-14 engine produces the maximum power of 75 horsepower.
- The SMD-14NG engine is an improved version of the previous one, namely, has a maximum power of 80 horsepower.
- The SMD-66 engine has a V-shaped piston location. Total pistons six. Equipped with a turbocharged system that has a power effect due to overclocking the impeller of the turbine itself by the exhaust engine gases. The maximum power is 170 horsepower. This engine is the most powerful among the other installed in the DT-75 tractor.
- The A-41 engine is installed only on the modification and has a maximum power of 90 horsepower.
- Well, the last, diesel A-41SI-02, which began to be installed on the new samples of the tractor. The power of this power unit is 94 horsepower.
All engines spend fuel in one hour of operation at medium loads from 175 grams to 190 grams per kilowatt.
Price new and used
Acquire new technique It is possible in terms of cost from 800 thousand to 1.3 million Russian rubles. The year of production, the model of the installed power unit, the version (basic or modified), equipment, additional equipment, as well as hinged equipment installed on the machine are also affected.
The supported Tractor DT-75 has cost from 350 thousand to 800 thousand Russian rubles. The year of production, general condition, modification, and, of course, attachments are also affected by the year, if it is available on the tractor.
It is aggregated with the same agricultural machines as tractors DT-75 and DT-75M.
The tractor is installed a four-grade, four-stroke diesel engine of the SMD-18H liquid cooling with gas turbine supervision. The launch of the main engine is carried out from the driver's seat using a start-up engine with an electrostarter.
The SMD-18N engine is a modification of the SMD-14NG engine; It differs from it by the presence of a turbocharger and adjusting the fuel pump.
To heal the engine before it starts at ambient temperature below -5 ° C on the tractor is provided preheater PZHB-200.
The nodes and mechanisms of the tractor are mounted on a welded frame, which consists of two longitudinal welded spars of a closed rectangular cross section, interconnected by cross-links.
Clutch coupling dry, two-disc, constantly closed.
The gearbox and rear axle are mounted in one case. The rear axle has two single-stage planetary mechanisms for turning with ribbon brakes that ensure the tractor braking both in front and at the rear. The planetary mechanism reduces efforts on tractor rotation levers.
The transmission of the tractor, the chassis, BOM, the rear sample mechanism is completely unified with similar parts and nodes of tractors DT-75 and DT-75M.
The chassis consists of leading and guide wheels that support rollers with rubber bands, four balancing carriages of suspension and two tracked chains.
To work with beetrokombabins to the tractor, a unified narrow caterpillar is installed.
By order of the consumer, the plant can set the tractor to a four-stage track.
The tractor is equipped with a separate-aggregate hydraulic system, a rear suspension mechanism with an autospar, allowing you to connect machines and tools through two-point and three-point schemes, a trailer device.
The hydraulic system and the mounted device are unified with DT-75 and DT-75M tractors.
Cabin closed, all-metal, double, sealed and tight. The seat is adjustable by weight and driver growth.
To create normal temperature conditions in the cabin there is a ventilating unit that supplies air purified from dust, moistened and cooled. It turns on when closed windows and cabin doors.
To ensure the optimal air temperature at the workplace of the driver in the winter period in the tractor cabin installed the canorospheric type. The design of the cabin allows you to work on the tractor in all weather conditions.
To improve the cabin visibility, it is shifted to the right of the axis of the tractor, and the fuel tank of increased capacity is placed on the left side of the cab.
Technical characteristics of the tractor DT-75N
| Nominal engine capacity, kW (hp) | 70,0 (95) |
| Rotation frequency, rpm: | |
| .. the crankshaft of the engine at rated power | 1800 |
| .. B. | 540 and 1000. |
| Cylinder diameter, mM. | 120 |
| Piston move mM. | 140 |
| Specific fuel consumption for nominal operating power, g / kW * h (r / er hp-h) | 251,6 (185) |
| Applied fuel for: | |
| .. basic Engine | Diesel |
| .. starting Engine | mixture of automobile gasoline A-72 or A-76 with motor Oil Diesel in the ratio of 20: 1 by weight |
| Capacity fuel tank,l. | 315 |
| Track, mM. | 1330 |
| Longitudinal base mM. | 1612 |
| Road clearance (on a platform with a solid coating on the bowel fastening of the gearbox to the frame), mM. | 376 |
| The width of the caterpillars, mM. | 390 |
| Specific pressure on the soil with the rear gear mechanism, MPa (kgf / cm2) | 0,049 (0,49) |
| Dimensions, mm: | |
| .. length with rear gear mechanism in the transport position | 3480 |
| .. Width | 1890 |
| .. Height | 2650 |
| Mass constructive, kg | 6490 |
Crawler, agricultural, general purpose, traction class 3, created on the basis of the tractor DT-75. It is assigned to implement in the unit with hinged, semi-mounted trailers with hydraulic machines of agricultural (plowing, solid cultivation, harrowing, stubborn sterns, sowing, harvesting crops, snowstore), earthmoving, landoral and road works. The start of serial production of 1984
The tractor has a four-cylinder, four-stroke diesel engine of liquid cooling with turbocharging. The launch of the main engine is carried out from the driver's seat using a start-up engine with an electrostarter.
To heal the engine, before it starts, the Tractor is provided for the PZB-200 preheater.
The nodes and mechanisms of the tractor are mounted on a welded frame, which consists of two longitudinal welded spars of a closed rectangular cross section, interconnected by cross-links.
Clutch coupling dry, two-disc, constantly closed.
The gearbox and rear axle are mounted in one case. The rear axle has two single-stage planetary mechanisms for turning with ribbon brakes that ensure the tractor braking both in front and at the rear. The planetary mechanism reduces efforts on tractor rotation levers.
The transmission of the tractor, the chassis, BOM, the rear sample mechanism is completely unified with similar parts and nodes of tractors DT-75 and DT-75M.
The chassis consists of leading and guide wheels that support rollers with rubber bands, four balancing carriages of suspension and two tracked chains.
To work with beetrokombabins to the tractor, a unified narrow caterpillar is installed.
By order of the consumer, the plant can set the tractor with a four-stage positioner (Dt-75N-X) and reverse gearbox (Dt-75n-P).
The tractor is equipped with a separate-aggregate hydraulic system, a rear suspension mechanism with an autospar, allowing you to connect machines and tools through two-point and three-point schemes, a trailer device.
The hydraulic system and the mounted device are unified with DT-75 and DT-75M tractors.
The cabin of the closed type, all-metal, two local, sealed and tight, is equipped with an air cooler and heater. The seat is adjustable by weight and driver growth.
To improve the ven in the cabin shifted to the right of the tractor axis, and the fuel tank is located on the left side of the cab. Services a tractor driver.
SPECIFICATIONS
| Engine operating power. kW (hp) | 70,0 (95) |
|---|---|
| Rotation frequency, min | |
| crankshaft engine | 1800 |
| Vom | 540 and 1000. |
| Cylinder diameter, mm | 120 |
| Piston stroke, mm | 140 |
| Specific fuel consumption at operating capacity. g / kW-h (1 / l. S.-H) | 234 (172) |
| Number of gears: | |
| forward | 7 |
| back | 1 |
| Range of speeds of movement, km / h | 5,5...11,5 |
| Capacity of the fuel tank, l | 315 |
| Pitch, mm. | 1330 |
| Longitudinal base, mm | 1612 |
| Width caterpillars, mm | 390 |
| The average specific pressure on the MAP, MPa (kgf / cm. KV) no more | 0,045(0,45) |
| The smallest rotation radius, mm | no more than 2500. |
| Road clearance, mm | 300 |
| Overall dimensions, mm: | |
| length with the rear sample mechanism and in the transport position | 4530 |
| width | 1850 |
| height | 2650 |
| Mass (construction) with basic equipment, kg | 5700 |
The multifunctional tracked tractor of the 3rd Dt-75 was produced in several generations and modifications, from 1962 to 2009 in Volgograd (basic production); and from to 1968 to 1992 in Pavlodar (Kazakhstan). During this time, more than 2,740,000 tractors of this model came up from the conveyors of the two plants - an unsurpassed result not only in our country, but also throughout the world.
Dt-75 Another "during his lifetime" became a legend, remaining on the frames of many Soviet films and put as a monuments for the posts in a number of cities. The secret of such mass and popularity is simple: it is a simple, inexpensive, rigorous and working machine, which can be used in various fields of farm. However, the main purpose of DT-75 - Plow and cultivate the Earth. Therefore, no collective farm or state farm did without it.
Former workers of the Volgograd Tractor Plant remember that in the old days this gigantic enterprise worked in four shifts, i.e. around the clock. At the same time, the main conveyor issued about a hundred tractors for shifting; Export conveyor - from 20 to 25. Plus, the defense specials of the plant produced from 50 to 60 units of BMD and BTRD per month.
The main model of the WGTZ and the base for a whole family of tracked tractors was precisely DT-75, launched into mass production in December 1963. The Stalingrad Tractor Plant became one of the first large industrial enterprises built by the Soviet Union "from scratch" in 1926-1930. In the years of the Stalingrad battle, fierce battles went directly on the territory of the plant.
VGTZ, who survived the worst military battle of the twentieth century, did not survive the barbaric "clamping" and economic "reforms". In the 90s, the company was divided between several owners, and for several years of hidden robbery remained only on paper.
Central passing VGTZ
The visibility of development and work remained: the design bureau continued to "issue" new models, protesters of which were exhibited at exhibitions; In the press, materials on the coming modernization of production were regularly posted; The famous colonnade of central passages looked, as always, unshakable and impressive ... A "from the rear gates" of the plant was constantly traveled by KAMAZ, loaded with tons of imaginary "scrap metal": machine tools and other industrial equipment.
Now VGTZ is in the ruined state, similar to the decoration of films about the apocalypse. Volgograd enthusiasts took pictures of the destroyed plant shops from the Quadcopter and published them with his photographs after fascist bombing. Similarity is awesome.
Review of generations and modifications DT-75
Be that as it may, and now, in the expanses of the former Soviet Union, it continues to work on the "veterans" of the Tractor DT-75 in the rank. Surprisingly, in the outback you can find through the proposed, but in the working condition of DT-75 of the first generation, without the letter "M" in the name! Those the most, without which no film about the final stage of the conquest of virgin lands and the like. At Vecile Dt-75, they became successors of their predecessors - and C-80, and after them stood on the premises of monuments in the centered areas of virgin.
Dt-75 of the 1st generation is characterized by a small all-metal cabin, in which the outlines of the Cabin of the GAZ-51 truck, and a four-cylinder four-stroke diesel engine SMD-14. With a capacity of 75 horsepower. Accordingly, on the second generation tractors, launched into the series in 1978, a new, enlarged and torn panoramic cabin equipped with a ventilation unit was installed. It was shifted to the right of the tractor axis, and the fuel tank, which was previously located at the back, was located to the right of the cab and became much more suitable. DT-75V, DT-75MV, DT-75BV - factory names of tractors with a new, asymmetrically located cab.
Visually: the first (right) and the second generation of DT-75 in the toy copies of the tractor models
It must be said that new cabins, unconditionally improving the level of comfort of mechanisters, were not immediately accepted. Trust in the tractor and his reputation were so great that for several years from different ends of the country, letters went with the requirement to leave in the production of DT-75 of the 1st generation. A new tractor, due to the side of the tank, was ironically called the "postman". By the way, one of the arguments was that with the new cabin it was uncomfortable to frighten the forest shots: prevented her height.
However, to remain in the "postal" form a tractor Dt-75m was destined to all the subsequent years of its production. The second generation of these agricultural machines was equipped with more powerful diesel engines. A-41, A-41Sy. With a capacity of 90 l. / s. (DT-75M, DT-75DE), and turbocharged SMD-18N With a capacity of 95 l. / s. . (Dt-75n). Motors were installed on DT-75 Pavlodar production D-440-21 Production of the company "Altaidizel" (Barnaul). However, in fact, this motor is similar to A-41.
As for the modifications of the DT-75 tractor, each of them was designed to increase it performance features In specific specific conditions. Briefly about each of them:
- Dt-75b - marsh modification, with an increased width of the caterpillar cloth and the 80-strong SMD-14NG engine. This tractor is intended for use on wetlands, in particular, on peat-workers. The design was supplemented with special engine protection and transmission.
Dt-75b - the marsh modification of the tractor
- Dt-75K. - Tractor for working on steep slopes, for example, in the mining industry. This modification is equipped with a tipping protection system on steep slopes. Engine - SMD-14MG. The seats in the cockpit were originally located: not around, but a friend opposite each other.
- Dt-75s- Modification intended for use as a bulldozer. The main feature is a mighty six-cylinder diesel engine SD-66 with a capacity of 170 l. / S.
- Dt-75n -upgraded version of the classic DT-75M, launched in the series in 1984. A number of constructive changes, however, left this variant of the tractor fully unified with the DT-75M model.
- Dt-75d- Universal tracked tractor with a diesel engine A-41 and with a capacity of 94 liters / s.
- Dt-75ml -made from 1986 only in Pavlodar, an option of a tractor, distinguished by a changed facing motor compartment and enlarged in the size of the cab, which increased the height of the tractor from 2304 to 2923 mm.
In Pavlodar, DT-75 put the cabin of their own design, even higher and spacious. In the photo - modification of DT-75ml.
Interestingly, in the Pavlodar Tractor Plant, experiments were also carried out on launching in the production of DT-75M and DT-75ml not on the tracked, but on the whether.
By the way, Pavlodar Tractor Plant in the era of new economic realities has suffered a fate of his "older brother". The production record was delivered in 1984: 55 thousand units DT-75. In the late 90s / early 2000s, tractor production stopped; The plant was divided into several enterprises, of which the pipe rolling production "KSP STEEL" is actually working and giving products.
Dt-75 - continued?
The official "heir" of the most massive caterpillar tractor was its modernized version of W-90 ("Volgograd Tractor-90"), which subsequently, in a slightly modified state, received the trade name "Agromash-90TG". In the series, this car did not go, and, given the complete ruin of the VGTZ, the prospects for its production remain very foggy. Perhaps it will be established in other enterprises of the concern " Tractor plants" How, for example, production military equipment (BMD and BTRD), which was transferred from Volgograd to Kurgan. Nevertheless, you will get acquainted in general terms with the features of the tractor "Agromash-90TG".
"Restyling" of the main Soviet caterpillar tractor has already occurred in two thousand years. BT-90, and practically it is "agromash-90tg", is a modernized version of DT-75, and in general its design repeats the legendary tractor. However, firstly, new model Received more modern engines:
- A-41SI-02 is an advanced version of the A-41Si Altai Motor Plant. This diesel is equipped with a pneumocompressor, a liquid-oil heat exchanger, a paper air cleaner. Power - 95 l. / S.
- Minsk D-245.5S2 - turbocharged engine and intermediate air cooling system. 110 l / s. Power.
- Sisu 44-DTA is the most modern (economical and environmentally friendly, but at the same time more expensive) the motor, which in the Finnish license is produced at the Vladimir Motor Tractor Plant. Power - 94 l. / S.
The tractor again "stopped being" postman ": the fuel tank on the BT-90 is located behind, but it has not only not decreased, but also increased to forty-liters: from 260 to 300 liters. The hydrocrators (primary and clutches of the clutch) are transferred from the front of the tractor behind the cab, near the fuel tank. Oil now does not fall into the cabin.
The cabin in the "agromash-90tg" became not only more spacious, but also an order of magnitude more comfortable. Dashboard deprived of outdated mechanical levers and oil pipes, they came to shift electric sensors. The main and additional (passenger) jobs are much more convenient; In the cockpit made the second door. The hood on "heir to DT-75 was not metallic, but fiberglass. The color of the tractor has changed from red on blue.
W-90, he is "agromash-90tg"
With the repair and spare parts there are no problems: the new model has full compatibility with the classic dt-75 of the second generation. Mechanic knowing device The predecessor, can easily understand VT-90. Well, now, in fact, about the device itself of DT-75.
Technical characteristics of tractor DT-75
As already noted, the main purpose of the tractor is work in agriculture. "Element" DT-75 – pachote, continuous cultivation of fields, harrowing, immersion, sowing and harvesting crops, snowstand. However, the possibility of aggregating the tractor with more than a hundred mounted, semi-mounted and trailed guns allows it to apply it in the widest range of earthmoving, reclamation and road works; on logging; With waterfront, welding and rapid installations.
Of course, in the construction, road and industrial spheres, dt-75 database bulldozers will not be compared by power and performance with specialized Chelyabinsk industrial tractors. However, unpretentious and reliable DT-75 can be successfully applied not only in the village, but also in the city, and not equipped with territories, without any production base.
DT-75 engines
Four-cylinder, four-dimensional diesel motors:
- SMD-14. Production of the Kharkov Motor-Building Plant "Sickle and Hammer". With a working volume of 6.33 liters. and with a capacity of 75 l. / s., at 1.7 thousand crankshaft revolutions per minute. Specific fuel consumption at rated power - 218g / kWh. Cylinder diameter - 120mm; Piston move - 140m.
- SMD-18Nit differs from the "14th" presence of turbocharged and increased to 95 l. / s. Power.
- A-41.and A-41Sy.as well as their analog D-440-21All - produced by the Altai Motor Plant. Power - 90 l. / S. The diameter of the cylinders is 130 mm. Piston stroke - 140 mm. The operating volume of cylinders is 7.43 liters.
DT-75 with the Emblem of WGTZ in the Museum
Six-cylinder four-stroke diesel:
- SMD-66. (Entry from Kharkov and Belgorod motor plants). The operating volume of cylinders is 9.15 liters. Power - 170 l. / S. Installed on "industrial" modification Dt-75sDesigned to significantly increase the productivity of the tractor when applied outside agriculture. For example, as a bulldozer on construction or road works.
By the way, the same diesel engine was equipped with Dt-175 "Volgar" - The promising VGTZ model, a purely agricultural destination, launched in a series in 1986, and already in 1992 "ordered for a long time to live" by the efforts of the "reformers".
Engine on Dt-75 is equipped with a single-cylinder "start" - launcher gasoline engine PD-10U. Power 10 hp with electric starter; as well as a dry dual-disc clutch coupling of a constant-closed type. To warm the engine before starting during the frosty ambient air temperature, the preheater is designed for DT-75 PZB-200. Motor installed on a special elastic car type suspension; Fastened to the tractor frame in four points.
Features of DT-75 design and basic parameters in numbers
The tractor frame is a weld, consisting of two longitudinal welded spars of a closed rectangular cross section. The spars are connected between them with transverse tubes. The mechanisms of the gearbox and rear axle are arranged in a single case. The rear axle is equipped with two single-stage planetary rotation mechanisms with tape brakes. The planetary mechanism contributes to a decrease in efforts on tractor turnovers. IN running part The wheels are drivers and guides that support rollers with rubber bands, 4 balancing carriages suspension and 2 tracked chains.
On the archive photo - Dt-75 of the first generation
- The overall dimensions of DT-75 of the 1st generation - (length x width x height, mm): 3480 x 1740 x 2304.
- The overall dimensions of DT-75M (2nd generation) - (length x width x height, in mm): 4240 x 1850 x 2705.
- The width of the caterpillars is 390 or 470 mm.
- Agrotechnical clearance - 380 mm.
- The mass of DT-75 of the 1st generation - 5550-6050 kg constructive; 5840-6360 kg operating.
- The mass of DT-75 of the 2nd generation - 6170-6740 kg constructive; 6640-7210 kg operating.
- King width - 1330 mm.
- The number of forward transmissions: 7 main; 16 - with a track included.
- Number of reverse gears: 1 main; 4 - with the track included.
- Fuel tank capacity: 1st generation tractors - 240 liters; The second is 260 liters.
Transmission Tractor DT-75
The power generated by the engine is transmitted to the driving part of DT-75 by means of a hydromechanical transmission, using a torque converter.
DT-75 gearbox, in a single block with rear bridge
The main elements of the tractor transmission are as follows:
- Clutch friction clutch, fastening to motor flywheel. Its purpose is to transfer torque to subsequent aggregates; Smooth disconnection and connection power plant with gearbox.
- Manual gearbox located in a single housing with a rear axle mechanism. The checkpoint is responsible for the movement of the tractor on the main and technological transmissions, front and reversing.
- Main gear. Posted directly in the housing of the rear axle. It consists of a conical gear gear of the PPC and the driven gear of the turning mechanism.
- Two planetary turning mechanisms.
- Semi-axes and finite borterate gearboxes, fixed on both sides of the bridge.
- Power takeoff shaft (VOM) - to transmit energy to aggregative with the tractor machines and mechanisms.
Chassis and control of the tractor DT-75
The driving part of DT-75 is used to convert the energy of rotation of the gear leading wheel of the final transmission to the transit movement of the tractor. The entire body also relies on the running part, which provides grip from the earth.
The main components of the chassis:
- balancing carriages suspension;
- caterpillars;
- guides and drive wheels;
- supporting rollers with rubber bands.
On the tracked links there are overlapping of treadmills, for the movement of the support rollers of the tracked circuit without jolts and shocks. The suspension is distinguished by elasticity and has balanced, so the tractor can move smoothly even with mounted guns. Each of the 4-carriages of DT-75 suspension is installed on the pin (2 carriages on both sides).
The carriage is a trolley composed of internal and external balancers connected to each other in the swing axis. The support rollers are paired at the lower ends of the balancers, and the springs of the cylindrical shape are dried on top of the balancing.
Chassis tractor DT-75
The special guide wheel (in the front; installed on 2 conical roller bearings) changes the direction of movement of the running tracked chain, without giving it to lose the tension. Adjusting the degree of tension is carried out using a special tensioning mechanism.
Rollers (supporting) in the mechanism of chassis are also four, 2 on each side. They guide the caterpillar with the help of rims and do not give it to prick. The caterpillar consists of links, and each truck is a complex steel casting with 7 peasons grouped by 3 with external and 4 s inner. The method of managing turns in the process of movement is to slow down one of the caterpillars, as well as the disconnection of the lagging caterpillar.
Cabin Dt-75. Workplace mechanizer
Cabin all-metal, tight, with panoramic glazing; fully sealed; Equipped with air purification systems and heating. The air purity system turns on automatically with full door closing. The heater drives into the cabin heated air from the radiator through the air duct.
In the cab of the tractor DT-75M.
The chair at the workplace of the mechanizer is adjustable in height; Additional seat is located just below, and it is not adjustable. Wiper brushes installed on the front and on rear glass; The glass washer is provided for the front glass only.
Tractor DT-75 crawler type Released in various modifications since the end of 1963 and is different among their fellows in the class of efficiency and ease of operation at low cost.
Initially, the tractor was designed to perform various agricultural work in a complex with semi-mounted, mounted and trailed mechanisms. However, high performance characteristics allowed him to become a universal unit successfully used in various branches of economic activity.
Dt-75 and its modifications were produced at the facilities of the Volgograd Tractor (VGTZ, Russia) and Pavlodar Tractor (PTZ, Kazakhstan) factories. The first of them ceased to the conveyor assembly in 2009 and transferred the production of tractors DT-75 Volgograd Tractor Company (VTK). The second - PTZ, serially released the DT-75M models (from 1968 g), Dt-75ml (from the middle of the 80s.), Dt-90P, Dt-75T and Dt-75Mlk (all three - from the beginning of the 90s .). In 1998, the Kazakhstan plant announced bankruptcy.
DT-75 device
The basic version of the tracked tractor weighing from 5.5 tons and dimensions of 4109.5? 1740? 2304 mm was carried out in motion4-cylinder diesel engine SMD-14 (75 l. P.) With a resource of 3 thousand hours. Since the end of the 70s, it was replaced by an improved version of the SMD-14NG (80 l. P.). Also, on various modifications of the tractor, A-41 (90 hp, DT-75M model), SMD-18H (95 liters, dt-75n), SMD-66 (170 l s., Dt -75c), A-41I (94 liters., Dt-75d and Dt-75t), A-41Si (94 l., Dt-75De), Belarusian D-245 (105 liters., Dt -75ml, Dt-75DM and DT-75T), RM-120 and RM-80 and (100 liters with. And 80 l. P., Dt-75pm).
Stock Foto Crawler model tractor DT-75 
Starting the power plant is carried out using a starting engine. In winter, a preheater is used to warm up a diesel engine.
The driving part of Dt-75 consists of a welded frame (two spars of rectangular cross section connected by transverse round tubes), on which all the nodes and mechanisms, rollers with rubber bands, guide and leading wheels, 4-carriages of the suspension and two tracked chains are mounted.
Clutch coupling -stable-closed type, 2-disk. The rear axle received two single-stage planetary rotary mechanisms. Belt-type tape, floating type.
To increase the thrust in the transmission, it may additionally be included:
- torque magnifier (UKM, planetary gearbox with friction and roller couplings; ratio 1,25);
- khoduemyshtel (mechanical gear 4-step reducer);
- reverse reducer (single-stage mechanical; transmission number of front transmission - 1.67; rear transmission – 1,35).
In order to expand the nomenclature on Dt-75 tractors, the power take-off shaft (VOM) is applied with a drive from the leading shaft of the MCM or Khoduemyshtel.
The gearbox is 4-chassis (7 front transmissions and one rear), installed in the front compartment of general with the rear axle of the case. On the front wall of the checkpoint in a separate case, the mechanism of the MCHE or Podoamyshtel is mounted.
The basic model is equipped with a double all-metal sealed cabin. The seat was regulated by the growth and mass of the driver. Since 1978, DT-75 comes with a new tight cabin, which is shifted to the right from the central axis of the tractor to improve the view.
To create comfortable working conditions, the ventilation device is used to be peeled, cooled and moistened to the cabin. IN winter period The optimum temperature of the air is provided by the heater of the canorrifer type.
DT-75 tractor scheme 
1 - engine; 2 - cabin; 3 - fuel tank; 4 - hinged levers; 5 - power take-off shaft; 6 - trailed bracket; 7 - leading wheel; 8 - central transmission; 9 - caterpillar; 10 - gearbox; 11 - reference wheel; 12 - clutch coupling; 13 - guide wheel.
The tractor is equipped with a trailer device, a rear jacket and a separate-aggregate hydraulic system. Dt-75 can be aggregated with practically any C / x tools (mounted plows and harrows, potatoes, seeders), including lateral semi-mounted (concrete pavers, loaders). As well as with bulldozer, drilling and road construction equipment.
Specifications
Specifications of the main modifications of the tractor DT-75:
| Modification | Dt-75 | Dt-75m | Dt-75n | Dt-75d |
| Tractor type | crawler, general purpose | |||
| Nominally traction effort, kgf | 3000 | |||
| Tractor weight, kg *: | ||||
| - constructive | 5550-6050 | 6170-6740 | 5830-6400 | |
| - operational | 5840-6360 | 6640-7210 | 6330-6900 | 6295 |
| Length: | ||||
| - with a hinged system | 4573,5 | 4670 | 4607 | |
| - without a hinged system | 4109,5 | 4209 | 4240 | |
| - in the transport position | 4380 | 4380 | ||
| Width | 1740 | 1890 | 1890 | |
| Height | 2304 | 2650 | 2650 | |
| Road clearance, mm | 326 | 376 | 290 | 300 |
| The smallest rotation radius, mm | 2250 | |||
| Base (distance between extreme rinks), mm | 1612 | |||
| King width, mm | 1330 | |||
| Width caterpillars, mm | 390 | |||
| Specific pressure on the soil, kgf / cm2 | 0,44 | 0,51 | 0,49 | 0,42 |
| Corners of descent and lifting, degrees | 20 | |||
| Static transverse stability, degrees | 40 | |||
| Max. The resistance of the slope during the operation of the tractor across the slope, hail. | 15 | |||
| Number of forward gear: | ||||
| - main | 7 | 7 | 7 | 7 |
| 16 | 16 | 23 | ||
| - with PCM included | 7 | 7 | ||
| 7 | 7 | |||
| Number in front of the reversing: | ||||
| - main | 1 | 1 | 1 | 1 |
| - with the track included | 4 | 4 | 5 | |
| - with PCM included | 1 | 1 | ||
| - with a reverse reducer | 7 | 1 | ||
| Speed \u200b\u200brange, km / h: | ||||
| - Forward | 5,15-10,85 | 5,30-11,18 | 5,45-11,49 | |
| - Forward with the included ukme | 4,12-8,68 | 4,24-8,94 | ||
| - Back | 4,41 | 4,54 | 4,67 | |
| - Back with PCM included | 3,53 | 3,63 | ||
| - with a leader, forward | 0,33-4,74 | 0,337-4,886 | 0,34-11,49 | |
| - with reverse gear forward | 3,26-6,88 | 5,45-9,3 | ||
| - with reverse gearbox back | 4,05-8,54 | |||
| Capacity of the fuel tank, l | 245 | 315 | 315 | 315 |
| Engine brand | SMD-14. | A-41. | SMD-18N | A-41I. |
| Nominal operating capacity, hp (kW) | 75 | 90 (66,2) | 95 (70,0) | 94 (69) |
| Maximum torque, nm | 60 | 433 | 437 | 433 |
| Rotation frequency, rpm: | ||||
| - Crankshaft | 1700 | 1750 | 1800 | 1750 |
| - B. | 536 | 553 | 540 and 1000. | 540 and 1000. |
| Alternative torque factory,% | 15 | 15 | 12 | 15 |
| Nominal traction efforts, KN: | ||||
| - Basic | 30-11,1 | 35,4-18,8 | 36,5-14,3 | |
| - with PCM included | 37,4-33,1 | 44,3-39,1 | ||
| - with the reverse gearbox (forward / backward) | 62,89/49,02-26,43-20,63 | |||
| Traction effort long work with an AHC included, a leader or reverse reducer, kgf | no more than 3500. | |||
| Number of cylinders | 4 | 4 | 4 | 4 |
| Engine working volume, l | 6,33 | 7,43 | 6,33 | 7,43 |
| Cylinder diameter, mm | 120 | 130 | 120 | 130 |
| Piston stroke, mm | 140 | |||
| Compression ratio | 17 | 16 | 16,5 | |
| Specific flow of diesel, g / l. s.ch. (g / kWh.) | 195 | 185 (251,3) | 185 (251,3) | 166,9 (226,6) |
| Operating oil consumption engine from fuel consumption,%: | 3 | 1,5 | 1,5 | |
| - common | ||||
| - in avgar | 0,8 | 0,7 | 0,4 | |
| Engine mass, kg | 720 | 930 | 960 | |
* - depending on the configuration.
Modifications
Model DT-75M. Was produced since 1967 on the VGTZ and since 1968 on PTZ. From the base model was distinguished:
- using the engine A-41 (90 hp);
- higher cabin shifted to the right;
- fuel tank of increased tank (315 l), placed on the left side of the cab.
Photo Tractor DT-75M 
Model Dt-75b. The marsh modification is designed for H / h on peat-workers and dried swamps. Produced serially since 1968 on VGTZ. Main differences:
- sMD-14NG engine (80 l. s.; 1800 rpm);
- cabin, similar to DT-75m;
- the spars on the welded frame are associated with elongated bars, as a result of which the tractor width increased to 2240 mm, and the track is up to 1570 mm;
- the width of the caterpillars is increased to 670 mm, which made it possible to achieve a specific pressure on the soil 0.24 kgf / cm2Prey of lowered guide wheels (longitudinal base - 2365 mm) or 0.33kgs / cm2Arts of raised guide wheels (longitudinal base - 1612 mm);
- the design adds front and rear tray to protect the engine and transmission;
- instead, the UKM uses a 4-step-incomplete.
The modelodeT-75K is designed to perform agricultural s / h in the mountain slopes of a steepness of no more than 20 ° at an altitude of up to 2000 m above sea level. Manufacturer-WGTZ (since 1972). This modification was equipped with an EMD-14ng engine and possessed the following features:
- the welded frame and caterpillars are identical to the DT-75B models;
- to prevent overturning on the slopes, a reference device was used;
- the cabin had a visual signpost of the roll and equipped with two seats located one opposite the other;
- the reverse gearbox in combination with the front and rear mechanisms of the hitch allowed the work of the shuttle way.
The next modification of DT-75N was produced with an upgraded END-18N engine. The specified unit was equipped with a turbocharger and adjustment of the fuel pump, so that the power of the power plant was 95 hp. (1800 rpm).
The tractor was produced only on VGTZ and aggregated with the same mounted mechanisms as DT-75m.
Stock Foto Tractor DT-75N 
Model DT-75C. Designed to perform C / x, loading and excavation and road works. Key Features:
- V-shaped six-cylinder diesel engine SMD-66 (170 hp, 1900 rpm) with gas turbine supervision;
- 2-speed VOM;
- a hydrotransformer that provides automatic control of the velocity of the tractor movement depending on the resistance value;
- the fuel tank (360 l) and the oil system of the hydraulic system are installed on the left side of the cab.
The DT-75D model with A-41 or D-440-22 engines can boast of improved fuel efficiency, increased reliability of the transmission, chassis and rear attachment. Traction qualities of the tractor are increasing by installing a reverse gear or leader. For Aggregation, DT-75D uses: hydraulic control and drive system, coupling device, rear attachment, power selection shaft and removable front ballast loads.
Dt-75ml model was produced since 1986 only on PTZ. Main differences: Changed the module of the engine compartment, the cab is increased (height - 2923 mm) and the number of control devices.
Photo of tractor Dt-75ml 
Since 1991, wheel modifications of the Tractor -DT-75MLK, DT-75KP, DT-75DK and DT-75kPM were manufactured on PTZ. The wheeled versions were produced by minor series and were used on light land reclamation, road, construction and agricultural work.
From the low-prolonged Point models of DT-75B (SMD-14NG engine), Dt-75pm (Engineer-80 or RM-120), Dt-75DM (engine D-245.25.) And DT-75MV (engine A-41), which have been produced only on VGTZ.
The further development of DT-75 found in the new product VTK under the trade name "AGROMASH 90TG" with the engine A-41SI-02 (94 hp, 1750OB / min), which is produced since 2009
A new caterpillar tractor has a new design and, as the predecessor, is distinguished by enviable universalism. It can be carried out the entire spectrum of C / x operations, as well as road-earth-agricultural, ameliorative, construction and loading work.
Video Review Tractor DT-75:
