Crawler tractors - tested assistants. Crawler Tractors - Tested Helpers Cabin Size Dt 75 N
Dt-75 crawler tractor, which was produced at the Volgograd Tractor Plant since 1963, began at one time the most massive in the USSR. The real popularity and folk love he won due to its functionality, simplicity in maintenance and repair, low cost Compared to other tractors of the same class.
The base model of the tractor was an amazingly variable basis for creativity of engineers-designers. Listening to the needs of the village workers, the designers invented all new modifications of the tractor Dt-75 to work in specific conditions (on the swamps, on the slopes, etc.).
The mechanisters appreciated and appreciate the DT-75 tractor for Quality and simplicity. "Simple, like a shovel," - so lovingly called it. And this is a real compliment, because for a village employee, simplicity means convenience, saving time, the ability to make repairs yourself.
DT-75 tractor intended for universal agricultural work belongs to the third traction class. A successful combination of operational qualities (versatility, simplicity, maintainability, efficiency) made this car incredibly popular in the Soviet Union, and the powerful potential laid down in the design decision made it possible to create a multitude of modifications based on the first model. The next upgraded model has descended from the conveyor in 2009. Changed I. appearance, Basic nodes (DVS, CAT, Transmission), and a number of other details.
Initially was DT-56
In the late 1950s, the Soviet government thought about the need to issue a new, progressive, appropriate time and requirements of agriculture model of a caterpillar tractor. The task was assigned to the SZ.
It was planned that the 30th anniversary of the plant (in 1960) the design will already be developed, prototypes of the new tractor were produced, government tests were carried out. And work boiled! But the model of DT-56 tractor, developed in 1957-1958, did not stand it, for mass production, the tractor was not recommended.
Dt-75 road!
The next attempt, the DT-75 model, developed by the team of designers under the leadership of Mikhail Alexandrovich Sharov, was successful. July 16, 1959 Building two samples new car The feasibility Council of the Stalingrad Council, the Soviet Council of the Stalingrad Council, was completed, and recommended the DT-75 tractor to mass production in the event of successful tests.
At the end of 1959 and in the first quarter of 1960, the plant manufactured 22 DT-75 tractors, of which 17 were aimed at government tests. For the season, tractors worked 1500-2000 hours under load. Test data spoke about the indisputable advantages of the new model compared to the predecessor.
DT-75 tractor was 300 kg easier, the speed of its movement increased by 35-47%, and productivity increased by 28-38%. Basic technical indicators Dt-75 exceeded the best foreign tracked tractors.
Long path to arable land and triumph
In 1960, the government decided to put the tracked tractor DT-75 for production on the VGTZ. It took the reconstruction of the plant and time to prepare the necessary capacities and equipment. While the production prepared for a new model, began to produce a transitional option - the DT-54B tractor. Its design allowed, without stopping production, replace the cabin, hydraulic, suspension, and other nodes with new ones and bring the construction to the DT-75 tractor as much as possible.
At the end of July 1962, in the fields of Saratov, Rostov, Volgograd regions And the Stavropol Territory passed the first echelon of the new brand tractors. The final transition to the release of DT-75 tractors occurred on December 30, 1963. On this day, the tractor with a scarlet pennant was solemnly descended from the conveyor: "The last tractor DT-54", and after him, the new tractor of red with pennant: "The firstborn assembly on the main conveyor". So the history of the legendary DT-75 began.
The rate of release of the new tractor was rapidly increased. Already on the tenth month, the production of DT-75 tractors was reached the level of production of old cars, which developed for 14 years. On the basis of the Tractor Plant, new enterprises appeared: factory starting engines - in Mikhailovka, Motor - in a ragulation, spare parts - in Kotelnikovo and Frolovo, instrumental - in Volgograd.
Since 1965, DT-75 tractors began to be exported, which raised the authority of the Soviet tractor construction and promoted the development of agricultural countries. Supplies were conducted to Poland, Bulgaria, Yugoslavia, Czechoslovakia, Cuba and a number of African countries.
Basic model DT-75
Initially, the tractor was equipped with a all-metal cabin closed automotive typeunified with a gas-51 car cab. The seat was adjusted by mass and driver growth. The modern DT-75 tractor also has a fully sealed cabin, protected from vibration and screens. There is an air liner for heating and a fan for cooling air.
Initially, a four-cylinder four-stroke was installed on the tractor diesel engine SD-14 liquid cooling of the Kharkov Motor Plant "Sickle and Hammer". From all sides, the engine was closed with a hood from moisture and dirt.
Gearbox mechanical, four-way, has seven gears and reverse. The planetary rotary mechanism is built into the rear axle, and the entire design along with the box is collected in a single cast case, which made it possible to make a more rigid framework and provide transmissions to work in less pure conditions.
A special mechanism was introduced into the transmission - a torque converter, due to which the tractor start facilitated from the place and the ability to overcome temporary additional resistance by lowering the speed without stopping the tractor appears.
"Construction Code"
The first tractors of DT-75 are now looking by mastodonts, antique rareholders. However, the merit of the designers is that they managed when developing a tractor, create a certain "construction code", which provided the family of tractors DT-75 such a long life and asked for all subsequent modifications.
The main idea laid down in the development of the first model DT-75 is to create a simple, maintainable, economical agricultural machine. It was possible. During the production, the DT-75 tractor has repeatedly changed the design, was supplemented with new functionality and made in many modifications. However, the main technical solutions applied in 1963 are still relevant.
By swamps and on the swamp ...
Based on the base model in 1964, the modifications of DT-75 tractor were made, adapted to work in special conditions: Dt-75B (marsome) and Dt-75K (sharp). Features of the design of a marsh tractor - an enlarged support surface of the tracked chains and the ability to lower the guide wheels. So managed to achieve increased passibility On the frying sites (the tractor was in demand in the USSR in the Baltic States).
The sharp tractor with the possibility of working on the slopes of a steepness of up to 20 degrees committed a real revolution in mining agriculture! Thanks to duplicate management and two sample mechanisms (ahead and rear), he could work without reversal at the end of the plot, treating the earth across the slope, horizontally.
With the help of DT-75K, it became possible to expand the sowing areas, revive the folded pastures, to process the fields of any configuration. And all this with a low fuel consumption. Such a tractor was very useful in the Transcaucasia.
Another well-known modification is a powerful energy saturated high-speed tractor Dt-75C, which VGTZ workers called "Volzhanin". In it, for the first time in the domestic tractor construction, an automated hydromechanical transmission and a hydrotransformer was applied, which made it possible to avoid increased weight and dimensions of the machine. By January 1976, "Volzhanin" successfully passed economic and government tests.
The modification of the DT-75 tractor with a fuel tank, located on the side of the cab, the "Postman" was mentioned in the people. These are tractors DT-75B and its swamp modification of DT-75BV, DT-75M and DT-75MV, DT-75N and its swamp modification of DT-75NV, DT-75D and its peat modification of DT-75DT, DT-75RM.
Evolution continues
From 1968 to 1992, the tractor was produced at the Pavlodar Tractor Plant in 2009, in 2009, the Volgograd Tractor Company, created as a result of the merger of COP and the CSM VGTZ in the capacity of Volgogradstroymash enterprises.
Since August 2009, a new modernized model with the trade name "Agromash 90tg" is manufactured. Changes: The corporate paint tractor has changed from red on white and blue with orange inserts; stubborn cabin; Increased volume fuel tank (from 260 l to 300 l); plastic hood; toned double-glazed windows; New economical and eco-friendly Finnish SISU engine; higher operational mass; All hydraulic centers are replaced with pneumatic vehicles; An additional attached equipment appeared - a snowpressure and a pipelayer.
Thus, high-quality domestic machinery, in the design solution of which was initially laid great potential, continues to evolve.
Dt-75 - Tractor on caterpillar, produced in the Soviet Union and the post-Soviet time. DT 75 tractor was produced by the Volgograd Tractor Plant from 1962 to 2009, over all the time it was produced over 2.7 million copies - a record result for this kind of technology. The tractor gained popularity due to reliability, unpretentiousness and availability. The main purpose of the caterpillar tractor Dt 75 - agricultural workers, but a successful design allows it to cope with other tasks.
History tractor
In the mid-to-late 50s of the XX century. VGTZ produced a tractor DT-54. These were, although multifunctional, but technically, morally obsolete cars, inherited constructive solutions for even pre-war times. The Soviet state was needed a new agricultural machinery, the creation of which was commissioned by Volgograd (then still Stalingrad) to the Tractor Plant.
Initially it was assumed that the DT-56 model would come to replace the "fifty-fourth". It was completed to work by 1958, but the model failed government tests and was not recommended for serial release.
The development of a completely new tractor began with the arrival at the VGTZ designer M. A. Sharov. Having got working on the largest tractor-building enterprise of the Soviet state, the balls put the ambitious task - to develop and start the release of new tractors, deeply upgrading the available samples of the arable art.
DT-75 trial models were collected on July 16, 1959. What the characteristics of DT 75 have, satisfied that the machines have shown a serious superiority over foreign tracked counterparts. The weight of the novelty was noted: the mass of the DT 75 tractor allows it to work on soft or wetched soils. And to May 1960, the leadership of the WGTZ ordered the beginning of the modernization of production to retraining the lines to Dt-75. The mass release was set up by 1963, on December 30 of this year, the conveyor left the last DT-54, and after him - the "firstborn" Dt-75, collected on the main conveyor. From that moment on, the long history of this tractor began, continuing today. According to 2009, the plant manufactured more than 2 million 741 thousand copies of Dt 75.
Archival photo of Dt 75 of the first generation:
Interestingly: Since 1965, cars have been exported to some countries of the Soclock, Cuba and a number of African states. This contributed to the development of their agriculture, and increased the authority of domestic engineering.
The car survived several modernization and was done in several modifications. By 2009, the tractor passed through the next update and restyling: he was provided with the new Finnish DVS of Sisu, produced on a motor-tractor factory in Vladimir, and a modern cabin. The tractor index has changed, it is produced with the trading name "Agromash 90 TG".
IMPORTANT: It is impossible to be confused by the tractor in question from the machine of the Kharkiv tractor plant, produced with a similar index. Tractor T 75 from HTZ was the modernization of DT-54.
The lineup
Generation tractors
The history of DT-75 distinguishes three generations of cars:
- first - 1963-1978;
- second - from 1978 to 2009;
- third - since 2014
First generation tractor:
As can be seen, they are visually distinguished by the design of the cab. In the first one was borrowed from the GAZ-51 car, the outlines recognizable. The second generation has already been equipped with a new cabin with a panoramic overview, enlarged and tighter. Also, for the comfort of the driver, the ventilation system was envisaged in the modified model.
Another difference is the fuel tank. At the basic version of DT-75, he was located behind, in the updated (with the index m) - on the side of the cab. For such accommodation, tractor drives ironically called the Machine "Postman" (the pot reminded the postal bag), the joking name was stuck. In the future, the fuel tank moved to the place behind the cab. You can also read about.
I wonder: after the launch in the production of second generation, the plant from all over the USSR came with letters with the requirements to leave the first, so good had a reputation and high confidence dorestayling, as they would say now, the tractor.
There were differences in the power units.
The third generation has undergone additional changes:
- reinforced circular pipe hood;
- the side sheets of plastic are replaced with metal;
- gas locks of the hood strengthened;
- the start / stop system has been changed from the button;
- other modifications.
Models
Dt-75, as already mentioned, was predominantly a agricultural tractor intended for arable work. But successful basic design allowed it to be adapted to perform other tasks.
There were four main modifications:
- Dt-75 C1 (DS 1) - with a rear jacket, equipped with hydraulic system and remote cylinders;
- Dt-75 C2 - equipped with hydraulic pump and hydraulic distributor, tank of the hydraulic circulation, oil supplies;
- Dt-75 C3 - without hydraulic system and rear sample blocks;
- Dt-75 C4 - with all listed, except for the cylinders made.
Based on their base, several submodifications created.
Dt-75b
The letter B is "swamp" - this is an option with an EMD-14 NG engine reinforced to 80 forces and an enlarged width of the caterpillars. The tractor was intended for work at peat developments and other wetland landscapes. Designers have provided engine protection and transmission pallets.
Dt-75V.
Designed for agricultural workers and operation in a bundle with agricultural attachments.
Dt-75d
The DT-75D tractor was equipped with a Motor A-41 or D-440-22. In addition to 75d, there was a "swamp" modification of DT-75DT.
The model with this index was intended for the conditions of steep slopes - operations on mining developments, etc. 75k was equipped with a special system for preventing overturning. Another curious difference is the design of the cab: the seats were located opposite each other, which, together with a number of others technical features (The presence of a reverse gear, a pair of hollow, the organization of the management of direct and thread with the help of the same control bodies), made it possible to work with the "shuttle" method. Was produced since 1972
Put on the tractor diesel DVS SMD-14 NG with a liquid cooling system. From the base model, the tractor differed in many elements:
- seats;
- frame design;
- brakes on the back bridge;
- organization management;
- nodes of the hydraulic system and oil pipelines;
- electrical circuit;
- design of caterpillars, etc.
For work in difficult conditions, the tractor was additionally completed with special leading wheels suitable for installing swamp tracks, as for Dt-75b. You can also read about.
Dt-75m
DT-75M tractor was intended for agricultural, road and reclamation work. In addition to 75m, 75mV modifications were produced, 75ml. Dt-75ml was with an increased number of control lamps, water cooling of the ventilation of the cockpit and the modified configuration of the controls.
This is a modification used as a bulldozer. At 75s, the most powerful engine in the series - SMD-66 by 170 hp
Dt-75n
The DT-75N model was equipped with a reinforced diesel engine of the SMD-18N. In addition to 75n, DT-75NS modification existed. Modernization of the core model of the second generation, the production of which began in 1984. Despite some constructive improvements and changes, the tractor remained entirely unified with Dt-75m.
Dt-75d
Wagon with Motor A-41C for 94 hp At its base, the Kruce-2 agricultractractractor was made, the DERS-4 in the modifications of the bulldozer, with the equipment of the rotary dump, the agricultural, etc., also was also produced, with various equipment, dehs 2/4, DTEC 4, DTEHS 2 (Deciphering values, see below).
The exclusive model of the Pavlodar Plant, which entered the production in 1986, it was equipped with an increased cabin and the other cladding of the engine compartment.
Interesting: Pavlodar specimens are distinguished by the inscription "Kazakhstan" on the engine compartment. "
As the manufacturer itself notes, from a formal point of view, this is only a deep restyling "Seventy-fifth". But this is not entirely true, despite the fact that the tractor inherits many ideas from a deserved ancestor. Serious change, for example, has been appearance. The cabin sound and is noise insulated, equipped with a calorior and air conditioning.
An important change was touched by the working bodies. If the predecessors were a hydraulic control, the new tractor operates on pneumatic actors, due to which the device is easier to manage, and the tractor driver is less. Also, 90-tg is deprived of pedals of the stopping brake, they have become not needed after the introduction of a selected control of the swivel mechanism.
Interesting: dashboard Equipped with an indicator unit where information is displayed about the state of the tractor nodes, their development, also the system reports the need for maintenance.
Pneumocompressor gives another important advantage: the driver can clean the air flow air filters, radiator, etc., or, for example, pump the tires of agricultural equipment operating in the bundle.
The running system was significantly finalized: it was provided with a balancing suspension, due to which the tractor began to move smoothly and even more. Two types of caterpillars are available to the customer:
- with OMS - open metal hinges;
- rubberized (RAG).
The latter make the tractor less noisy, reduce vibration and negative impact on the soil, easier to maintain. In addition, they allow the car easier to move along asphalt and other solid coatings, without damaging them.
Tractor and equipment codes
The manufacturer classs actual tractors of the DT-75 line to the following types:
How it becomes clear, d denotes force aggregate A-41 from the "Altai Motor Plant. In the letter M encrypted diesel "Minsk Motor Plant".
Motor A-41:
Some characters in the name of the tractor may indicate or another attachment (or a combination of such):
- PP - denotes the presence of a reverse gear;
- SEC - rear hydroneave;
- Budht - equipped with a universal dump with a hydroperoseca system;
- BPDT - the presence of a rotary bulldozer dump;
- BNDT 10/20 - Installed Bulldozer Tractor (10) type, or a model for a swamp (index 20);
- Hum - denotes a leader;
- C2 - indicates a model without a rear hydraulic hide and BO;
- C4 - the presence of in and hiding behind.
Summary Table of DT-75 models:
| The code | Availability in | Hydron woman rear | Reverse gear | Khoomymyster | Bolt modification | Tractor / Swamp | Rotary dump | Universal Dump |
| Des4 | Yes | Yes | – | – | – | – | – | – |
| DERS4. | Yes | Yes | Yes | – | – | – | – | – |
| DERS4 with BNDT | Yes | Yes | Yes | – | – | Yes | – | – |
| DERS4 with BPDT | Yes | Yes | Yes | – | – | – | Yes | – |
| Ders4 with Budht | Yes | Yes | Yes | – | – | – | – | Yes |
| Dehs 4. | Yes | Yes | Yes | – | – | – | – | |
| Dekhs-4 BNDT-10 | Yes | Yes | – | Yes | Yes | – | – | |
| Dehs4 BPDT | Yes | Yes | – | Yes | – | – | Yes | – |
| Dehs4 Budht | Yes | Yes | Yes | – | – | – | Yes | |
| DERS2. | – | – | Yes | – | – | – | – | – |
| DERS2 BNDT-10 | – | – | Yes | – | – | Yes | – | – |
| DERS-2 BPDT | – | – | Yes | – | – | – | Yes | – |
| DERS2 Budht | – | – | Yes | – | – | – | – | Yes |
| Dehs2. | – | – | – | Yes | – | – | – | – |
| Dehs2 BNDT-10 | – | – | – | Yes | – | Yes | – | – |
| Dehs2 BPDT | – | – | – | Yes | – | – | Yes | – |
| Dehs2 Budht | – | – | – | Yes | – | – | – | Yes |
| DTEC4. | Yes | Yes | Yes | – | Yes | – | – | – |
| DTEC4 BNDT-20 | Yes | Yes | Yes | – | Yes | Yes | – | – |
| Desch4 | Yes | Yes | – | Yes | Yes | – | – | – |
| DESC4 BNTD-20 | Yes | Yes | – | Yes | Yes | Yes | – | – |
| DTEC2. | – | – | Yes | – | Yes | – | – | – |
| DTEC2 BNDT-20 | – | – | Yes | – | Yes | Yes | – | – |
| DTEHS2. | – | – | – | Yes | Yes | – | – | – |
| DTEHS2 BNDT-20 | – | – | – | Yes | Yes | Yes | – | – |
Specifications
Dt-75 - heavy machine of the third traction class. The technical characteristics of modifications of DT-75 tractors depend on the possibilities of the base platform, configuration, generation and additional equipment. The main parameters are presented in the table below:
| Parameter | Value |
| Power point | A-41. |
| Class | 3 traction class |
| Power (operational) | 95 hp |
| Transfer of forehead | 7 (Basic Supply) |
| 23 (with positioner) | |
| 14 (with reverse reducer) | |
| Rear Shows | 1 (in the database) |
| 5 - (with Hu) | |
| 7 (with PP) | |
| Speed | Up to 11.2 km / h, depending on the model and configuration |
| Length of longitudinal base | 1.612 m. |
| Track | 1.33 m. |
| Clearance | 38 cm. |
| Width of caterpillars | 38-47 cm. |
| Dimensions (Length-Width Height), m. | 4.4-1.85-2.71 |
| How much weight tractor DT 75 | 6.95 tons |
| Load capacity (over the axes of hinges) | 2.6 tons |
Constructive features
Engineers defended the tractor engine from inevitable when working, especially in sophisticated conditions, dust and other contaminants: the protection function performs the hood covering the power unit from all sides. Front under the hood are located oil and water radiator, covered by an additional tarp curtain. Rear end The engine contains a gear mechanism along with clutch clutch, gearbox, drive transmission, torque magnifier and rear axle. All of these components are packed in one cast case. If the package implies the presence of B, it is mounted next to this node.
DT-75 box diagram:
Knot in open form:
To facilitate starting, the preheater is provided.
The tractor is equipped with a planetary mechanism for increasing the moment of thrust, due to which the total traction effort on any transmission grows on a quarter (it should be noted that the fee for it becomes a decrease. maximum speed). Such a system allows a tractor without a reduction in transmission to overcome complex surface sections.
PPP DT-75 Mechanical, has the default 7 front gear and one reversible (what the tractor DT 75 has a speed range depends on the configuration). The planetary turning mechanism is embedded in the design of the rear axle, and the entire node, as already mentioned, is assembled by a single node: it provided the additional rigidity of the frame, along the way, additionally protects sensitive to the purity transmission from dirt.
BOV rotates from the gearbox mounted on the rear wall of the transmission case. To activate the shaft, the driver can not leave the tractor cabin, the flu lever is among the controls of the driver.
A separate mention is a frame. It is made up of rectangular spars bonded by bars and axes. All other DT-75 nodes are mounted on the frame. From the back of it contains brackets that hold the trailed mechanism with modules of the modules, including the main cylinder of the hydraulic system. This solution allows the machine to control the operation of the equipment directly from the cockpit and without assistance.
The designers have tried to provide a smooth move for which the tracks of the caterpillars (who have 7 lyms) are bound by metal fingers and are equipped with overlaps of the treadmill. Because of this, the rollers go through the chain very smoothly.
Cabin DT-75 closed type, with pair of soft seats. The driver's seat cushion can be adjusted. Heating workspace is organized by supplying heating system From the radiator, the cabin can also be cooled using the built-in fan. The cabin contains all the necessary control bodies - levers and pedals, including the lever of B and the hydraulic distributor, the electrical control buttons. Also there is a tank with water, a set of tools and a rechargeable battery.
I wonder: in the tractor design, a special beep is implemented, with which the tractor driver can, if necessary, communicate with the tractor without the need to reset the sound of the engine. Electrical circuit Allows you to connect a portable lamp or a remote header.
It can be said that the successful design of DT-75 is confirmed by the decades of the popularity of the tractor. In addition, in contrast, for example, from modern Western samples (for example, John Deere-equipped with electronics and telematics, DT-75 is simple, reliable and has excellent maintainability: it is possible to repair a broken tractor with a rural repair workshop, and sometimes Even independently. Despite the moral obsolescence, spare parts for "seventy-fifth" are still produced, and on secondary market There are many and used cars, and parts for them.
Operating experience
The number of DT-75 series tractors, given at the beginning of the article, speaks for itself: the consumer willingly enjoys this technique, and the demand for it was and remains consistently high.
Tractor owners note a large number of modifications under the most different types - from ordinary agricultural workers to operations in difficult conditions - on peatlands, swamps, etc. Tractors can be bulldozers, tractors, working with hinged agricultural machinery, etc.
Separately note their exceptional reliability. People with experience in DT-75 award him with many pleasant epithets: unpretentious, maintainable, multifunctional, hardy. They say about him even that he is "insensitive." After modifications and restyling, tractor drivers argue that the machine has improved the characteristics, added comfort, manageability and maneuverability.
This is true, especially in terms of reliability: with proper care, DT-75 will be true for decades. The keyword here is "with proper care", without proper maintenance and with nail politics, even this technique, inheriting the experience of Soviet designers, may refuse.
Another plus is a relatively small weight of the Tractor Dt 75. The tractor weighs 75, provides him with small pressure on the ground and allows you to successfully work on soft soils for which heavier cars are unsuitable.
Of the minuses, sometimes they speak about the insufficiently powerful engine to perform modern problems that does not give the required power. In addition, the tractor for those years that the design remained unchanged, just outdated and morally, and technically. It is difficult to conjured a new agricultural machinery with him, the conditions for the work of the tractor driver are no longer comply with current standards. That is why VGTZ conducted a deep processing of the initial idea, releasing the "Agromask-90 TG".
Others typical shortcomingsAllocated by the owners:
- frequent damage hydraulic pump;
- not the most reliable generator;
- characteristic of the entire agricultural machinery Times of the USSR The problem of lubricant leakage through the glands.
Some of these problems are solved by handling improvements.
Tractor in cinema
Interestingly, partly the popularity of DT-75 in the country and abroad is caused by its appearance in Soviet film products. If the tape is demonstrated in the tape, then with a high probability they use DT-75. The tractor became a "movie storage", and its overs were and remain very recognizable: for example, the heroine of Nonna Mordyukova was worked on the "seventy-fifth" in the film "Russian Field" 1971
Produced large-scale models Tractors for collectors.
Tractor value
Prices for Dt-75 today vary in a large range. Used technique on the move can be purchased even for 60-80 thousand: it may be an instance of the first to the first years of production, preserved in the outback. The cost of newer cars can be from 100-200 thousand to one and a half million and higher, depending on the year of production and state. The price of the new DT-75 on the plant's website is marked from 1.85 million.
Dt 75 a few decades was the most popular tracked bulldozer domestic market (3 traction class). The model has been widely used in various fields, and old versions of individual consumers use and now. The production of bulldozer in upgraded form continues. Technique that received many new elements (motor, cabin, transmission), has kept its main advantages: reliability, availability and simple design.
DT 75 production was carried out by the Volgograd Tractor Plant. Designers have repeatedly finalized a model, improving various performance featuresThat allowed a bulldozer to maintain its popularity, despite the abundance of competitors.
Dt 75 is characterized by a wide range of use. The car is actively used on repair and construction sites, in industry and agriculture. The bulldozer works effectively on slopes with a slight steepness (up to 20 degrees). An excellent passability allows you to use technique on off-road, soil of high humidity and swamp. Additional attachments increases the capabilities and functionality of the model.
Dt 75 is suitable for the following operations:
- overlooking small trees and stumps;
- development, loosening and moving soil at small distances;
- transportation of bulk materials;
- hydroelectric manipulations;
- loading and unloading;
- cleaning highways and streets from snow drifts, dirt, land.
All the nodes and mechanisms of the bulldozer are reliably mounted on a welded frame consisting of longitudinal spars. Gearbox and rear axle are located in one block.
To create an optimal temperature regime in the cabin there is a special ventilating unit. The presence of such a system provides the supply of purified and moistened air. Its inclusion is carried out in automatic mode when the windows and the cabin doors are closed.
In winter, the driver can be heated by using a special heating of a canorrifer type. Constructive features Cabins contribute to the fact that it is possible to work on such a bulldozer under all weather conditions.
Despite the fact that the modern market of special equipment is replete with various proposals, the DT75 caterpillar Bulldozer model continues to enjoy greatly popular. This trend is due to good technical characteristics and the high operational potential of the presented product.
| TECHNICAL SPECIFICATIONS | |
|---|---|
| Dimensions, mm. | 4400x1850-2240x2710 |
| Clearance, mm. | 326-380 |
| Weight, kg | 7400 |
| Capacity of the tank, l | 360 |
| KP | Front move -10, reverse - 5 |
| Move | crawler |
| Engine power, l / s | 95 |
| Number of cylinders, pcs | 4 |
| Nm Torque | 15 |
| Motion speed, km / h | 12 |
| Consumption, l / h | 15 |
| Cost, rub | 800000 |
| Analogs | YTO C1002, Tractor W-90, etc. |
Engine
Dt 75 is completed with several variants of power plants. The most common versions:
1. SMD-14 is the basic version of the motor (installed on the first modifications). A 4-stroke uncomprobative engine with a liquid cooling system and a dyeshecmer mixture function operated on diesel fuel. Engine power - 75 hp
2. SMD-18N - installed in later modifications (the most common version). 4-stroke diesel engine had liquid cooling (Coolant or Tosol circulated through the radiator), turbochards and direct injection Fuel.
Characteristics of the SMD-18N:
- working volume - 6.33 liters;
- rated power - 70 (95) kW (hp);
- rated frequency of rotation - 1800 rpm;
- the number of cylinders is 4;
- cylinder diameter - 120 mm;
- specific fuel consumption - 224 (165) l / kW per hour (l / h per hour).
3. A-41 - 4-stroke diesel unit with direct injection, liquid cooling system and vertical location of cylinders. The feature of the engine is the 2-valve gas distribution mechanism and cast iron sleeves. with special surface treatment.
Motor characteristics A-41:
- working volume - 7.43 l;
- rated power - 90 hp;
- rated rotational speed - 1750 rpm;
- the number of cylinders is 4;
- cylinder diameter - 130 mm;
- the degree of compression is 16.
4. RM-120 is a less common diesel unit.
The latest versions of DT 75 were also equipped with SISU (Finland) engines with a capacity of 98 hp.
For operation in the northern regions the installation was envisaged preheater. All bulldozer motors were not demanding of the quality of fuel and differed in a high margin of strength.
The fuel tank capacity was 360 liters.
DT-75 bulldozer fuel consumption
The average consumption of fuel consumed in one hour of operation is 15 liters, subject to the use of a 95-strong engine. In another configuration of the DT-75 bulldozer, consumption may differ significantly. Diesel refills into a tank with a volume of up to 300 liters.
Transmission
The transmission is a multistage gearbox that works with 10 different speeds. Thanks to this, you can easily exploit the bulldozer in different conditions. Such a high-quality transmission that works in a pair of the engine makes it possible to minimize the total amount of fuel consumed.
Chassis
The running system is characterized by high elasticity. It is unified with the DT-54 model. In the suspension of the technique, various additions of spring are introduced, which reduce the differential differential.
Dimensions:
- length - 4400 mm;
- width - 1850 mm;
- height - 2710 mm;
- road clearance - 326-380 mm;
- crawler base - 1622 mm;
- pitch width - 1330 mm;
- the width of the caterpillar (basic performance) is 390 mm.
How much does it weigh?
The total mass of the bulldozer is 7400 kg. The technique is able to develop speed up to 12 km / h and move goods weighing up to 3000 kg.
The model is operated with various dumps with a maximum weight of up to 900 kg. The speed of operation of the dump is 150 mm / s, the limit is 6000 mm.
Device and features of operation
Numerous mechanisms and elements of Dt 75 are fixed on a welded frame consisting of 2 longitudinal spars of rectangular cross section. Additionally, they are connected by cross connections for greater reliability. The gearbox and rear axle are located in the back area, which makes the bulldozer more stable.
The chassis of the machine is characterized by increased elasticity. This element is unified with DT 54 bulldozer. At the same time, the suspension is supplemented by springs that reduce the differential technique. Each caterpillar has 42 units with the opportunity fast replacement. Among the features of the caterpillars should be highlighted with a special system of engagement, equipped with a multitude of primer coating, covering the entire length of the element.
DT 75 transmission is built on the basis of a 15-speed mechanical KP (10 front and 5 rear velocities). Such an abundance of modes allows you to choose the optimal stroke for specific conditions and reduces the load on the elements of the machine. The transmission uses a dry 2-disc clutch coupling that is responsible for the effectiveness of force transmission.
Ribbon brakes provide high braking quality even with quick movement.
For Dt 75 is offered a wide range of hinged equipment. Device management is carried out by means of a hydraulic system with 2 operating cylinders. The angle of the dump of the bulldozer reaches 270 degrees, which allows you to form a mound or remove the snow from the road. For each pass, the machine cries the soil layer to 100 mm. The model is equipped with the following attachments:
- rotary dump;
- unfeutely dump;
- universal dump for various types of work.
For work S. additional equipment The power take-off shaft is used in a closed cast iron case. The element is made in the form of a 1-speed gearbox with cylindrical gears. The speed of rotation is 9 revolutions / sec.
The bulldozer can be equipped with a rotary or non-peculiar dump. The installation of such additional equipment contributes to the fact that the overall performance of the bulldozer tends to increase.
Initially, Dt 75 was equipped with a sealed closed cabin borrowed from the car 51. Later, cabins with increased height and control levers sent towards the driver appeared. The node survived several modernizations, the last version was characterized by increased sound insulation and assumed the installation of the heating system or air conditioning as an option. The cabin contained 2 people and equipped with comfortable seats with special handles for adjustment. Control and control devices had ergonomic control and reduced operator fatigue. There was quite a few places in the cockpit, because 2 people having a dense physique became closely. Decorative elements Exterior finish did not assume, and many details were excluded from the design (rearview mirrors, turn signals). Only 2 round headlights above the hood and 2 lanterns installed above the glass in the back of the light optics were present. Cleaning windshield It was performed using a janitor located on the upper frame of the window. In terms of comfort, the bulldozer seriously inferior to Western competitors, but provided good working conditions.
Dt 75 is characterized by good maintainability. Currently, there are no problems with spare parts for a bulldozer, and the cost of repair is minimal. The main complexity for the owners of the technique is its delivery to the place of operation. In rural areas, the problem is quickly solved, for the city will have to order special transport With low frame not to damage asphalt.
Driver cabin
Manufacturers were well taken care of the implementation of high-quality sound insulation of the driver's cabin. In many ways they managed to achieve this due to the maximum tightness of the compounds. As a result, inside the cabin is created optimal temperature mode in any season. As an option, this element may additionally be equipped with a heating system or air conditioning. The devices and steering mechanisms inside the cabin are located in accordance with all the requirements of ergonomics. It should be noted the fact of absence additional elementswhich could prevent the normal management process.
Hinged equipment
Attachment is installed on the tractor DT75 Bulldozer, depending on the specifics of the work performed. Various manufacturers offer a fairly wide range of optional installations. Some of them are used for agricultural purposes or when cleaning snow.
Modifications
- 4 configurations of the caterpillar aggregate DT-75 are known:
- C1 - in the reserve can have remote cylinders, elements of the hydraulic system and the rear hide.
- C2 - can be equipped with a tank of the hydraulic system and the distributor.
- C3 - comes without additional equipment, like C1.
- C4 - Looks like a complete set on C1, but without a remote type cylinder.
- In order to rent a special equipment for transporting the unit to the place of work, it is necessary to report data on how much dt-75 bulldozer weighs. Previously, it was most popular to use railway platforms, and now the automotive equipment, which is much cheaper.
The DT 75 family includes many upgraded versions and modifications. The most famous variations of the bulldozer are:
- Dt 75b is a swamp modification that differs from the basic version the possibility of setting the position of the guide rinks and wider tracks. Changes allow you to use a bulldozer on swampy and viscous soils with maximum efficiency;
- DT 75K - version with improved stability and the ability to work on the slope of up to 20 degrees. The bulldozer is equipped with an updated transmission and an upgraded fuel supply system.
- Dt 75n - version with the SMD-18N motor;
- Dt 75d - modification with A-41 unit;
- Dt 75pm - variation with the engine RM-120.
Modifications of the bulldozer are no less popular than the basic version. The demand for the model is due to the following features:
- simple design that allows you to repair in field conditions;
- long service life and high maintainability;
- powerful power plants. With their help, the bulldozer can solve the most difficult tasks;
- upgraded caterpillar chassis with increased patency;
- variety of mounted devices;
- easy control (levers are near the operator);
- the cheapness of the technique itself and spare parts for it.
Principle of operation
If you need to spin on the plane of the cut soil, then it takes it evenly raised while driving.
If desired, the DT-75 Bulldozer operator may calculate the time cycle of the bulldozer, which consists of such items as:
- Working stroke with the deepening and soil cooker, i.e., the set and movement of a certain amount of soil to the discharge site occurs.
- Termination of movement to switch speeds.
- Idling to return to the original position for the coppe.
- Stop to go to the front turn.
Cropped and separated from the main surface, the soil is assembled before the knife to the top level of the working body, after which the dummy mechanism rises to the level of the earth's surface and the contents simply moves to the discharge site.
High maneuverability, if necessary, allow every time to start a cycle from a new place.
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Reliability
Convenience and comfort
Maintainability
Challenges
Tractor DT-75- One of those long-livers of the market, which received the most massive use. For decades, he was produced by large parties and thanks to a special design was used in the most diverse, including sufficiently severe conditions. The tractor for all the time received a number of updates and modifications, the latter of which is released (under the new name) today.
DT-75 tractor tractor
The presence in the chassis instead of the usual wheels of the caterpillar blade makes a real all-terrain vehicle. Due to this, it can be applied not on the usual agricultural land, but on construction and industrial sites, including with peat and swampy soil, as well as in the housing and communal services on the rest of the snow and garbage when choosing the corresponding model. It is allowed to use together with the combines, for example,.
The desired modification is selected together with the appropriate additional equipment, which may include:
- Reverse reducer;
- Hydraulic system (rear);
- Universal dump;
- Swivel or non-reflective bulldozer dump;
- Podoomyshtel.
Exterior type of tractor DT-75
DT-75 engine
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For several reissues, most vendors of transport changed. No exception and motor. So, the DT-75 tractor in various versions has such models of engines:
- A-41SI-01;
- A-41I;
- D-245.25;
- SD-14NG;
- SMD-18N;
- RM-80;
- RM-120.
Each of them has its own characteristics and distinctive features. For example, the engine A-41SI-01 production of the Altai Motor Plant has a power of 90 hp. (For comparison, the tractor has a greater power), and D-245.25 has 5 hp. More and produced by the Belarusian plant.
DT-75 tractor gearbox
Due to many models, the speed switching module suffers from unforeseen pollution, the DT-75 tractor has a fundamentally different design of the gearbox. Home and onboard transmission along with a pair of planetary mechanisms attached to rear bridge, collected in a solid cast building, which is intended to ensure clean work. The gearbox itself is mechanical and has 7 steps.
DT-75 tractor on the field
Fuel consumption DT-75
Because In the tractor design there is an additional launcher, in addition to diesel fuel, it has to use a mixture of low octane gasoline and motor oil. For the main type of fuel in the baseline, the tank is provided with a capacity of 315 liters. Wherein average flow Diesel fuel Tractor DT-75 has in volume 215.3 g / kWh
Specifications DT-75
- Type of tractor tractor, general purpose;
- Tractor weight, kg 5260;
- Overall dimensions, mm: 3705x1740x2273;
- Road clearance, mm 324;
- Base (distance between the axles of the extreme support rollers), mm 1585;
- Pitch (distance between the middle of the caterpillars), mm 1330;
- Specific pressure on the soil, kgf / cm2 0.4;
- Number of gears:
forward 7;
back 1; - Speed \u200b\u200brange, km / h:
Forward 4.0 - 10.54;
back 3,42 and 4.28; - Mark engine SD-14;
- Engine Type Four-stroke diesel with Dymercmertoral mixing;
- Rated power at 1700 rpm, hp 75;
- Maximum torque, kgm 60;
- Engine mass (dry, without radiator), kg 650.
Video about Dt-75
