The DT-75DERS2 crawler tractor is equipped with a fixed bulldozer blade. The DT-75DERS2 bulldozer has become widespread and is actively used not only in the Russian Federation, but also in foreign countries.
Bulldozers DT-75DERS2 are very popular among utilities, construction, road repair, agricultural enterprises and other organizations.
Such a wide demand for DT-75DERS2 bulldozers is due to their exceptional reliability and quality, excellent efficiency and productivity, and excellent technical and operational characteristics. All this is a strong argument in favor of buying a DT-75DERS2 bulldozer.
Technical characteristics of DT-75DERS2
| Tractor | DT-75DERS2 |
| Traction class | 3 |
| Engine (in-line, 4-cylinder liquid cooling) | A-41I |
| Operating power, kW (hp) | 69 (94) |
| Working volume, l | 7,43 |
| Speed range, km/h (with hum) [with reverse] | 5,45(0,34)…9,3(11,49) |
| Number of forward gears (with speed reducer) [with reverse gearbox] | 7 (23) |
| Number of reverse gears (with speed reducer) [with reverse gearbox] | 1 (5) |
| Crankshaft rotation speed at operating power, rpm | 1750 |
| Nominal torque reserve factor, not less than, % | 15 |
| Specific fuel consumption at rated power, g/kWh (g/l.s.h) | 226,6(166,9) |
| Average structural (operational) pressure on the ground, kg/sq.cm | 0,42 |
| Longitudinal base, mm | 1612 |
| Track, mm | 1330 |
| Ground clearance not less than, mm | 300 |
| Tractor weight (operational without ballast weights), kg | 6295 |
Device. Features of the main components and assemblies
The engine, transmission units, and cabin are installed on a welded frame made of two steel spars and cross beams. The rear part has a trailer hitch attached. In front of the engine there is a mechanism for attaching the bulldozer blade. The frame is connected to the chassis through a suspension unit.
Bulldozer DT-75 with attached excavator equipment
Power unit
The power plant can be equipped with the following engines:
- A-41 - modification of the DT-75D tractor;
- D-245.25 - for model DT-75ML;
- SMD-18N - for DT-75N;
- RM-120 - for the DT-75RM tractor.
The engines are naturally aspirated, naturally aspirated, with four power strokes and a single-row arrangement of 4 cylinders.
The reliability and efficiency of the A-41 engine are determined by:
- replacing the monoblock cylinder head design with an individual one, which sealed the gas joint and reduced oil consumption due to waste;
- a structurally proven reliable two-valve gas distribution mechanism;
- crankcase with increased strength and improved cooling parameters for cylinder liners;
- direct fuel injection system with one plunger pump and mechanical speed control;
- electric starting.
The unified clutch assembly is designed to briefly interrupt the flow of power and is mounted directly on the engine. The design of the device is double-disk with damping of vibrations from torsion of the driven disk. To turn off the permanently closed unit, a mechanical drive from a pedal in the driver’s cabin is used.
The cardan shaft transmits rotation to the planetary mechanism of the torque amplification device. When using it, the car increases the traction force by a quarter due to a decrease in speed, which makes it possible to overcome obstacles without switching to a lower gear.
Bulldozer DT-75. Rear linkage
The gearbox and rear axle are housed in one cast housing, which increases the rigidity of the structure. The bridge is equipped with planetary-type turning mechanisms with control of band brakes, driven by a mechanical drive from levers in the control cabin.
The travel system is assembled from a suspension mechanism, direction wheels with spring-type shock absorbers, rollers for supporting the track surface and the tracks themselves. The system serves as a support for the vehicle body and ensures the tracks adhere to the ground.
Purpose
The DT-75DERS2 bulldozer is designed to perform a wide range of excavation work:
- withdrawals,
- development and movement of soil,
- construction of embankments,
- digging and filling trenches and pits,
- moving crushed stone and other bulk materials,
- clearing roads from snow and the consequences of natural disasters,
- site planning and other work in industry and construction.
In addition, the DT-75DERS2 tractor can be used for snow removal, as well as for performing basic agricultural work (with the blade dismantled). A wide range of applications allows DT-75DERS2 bulldozers to be profitable in various areas of human activity.
The DT-75DERS2 bulldozer differs from analogues from other manufacturers in its low price, economical fuel consumption and the possibility of long-term operation with inexpensive maintenance.
The DT-75DERS2 tractor is produced with a bulldozer blade - straight, rotary, oblique - upon customer request. The rotation angle of the bulldozer blade (with appropriate equipment) can reach 30°.
Design and advantages of the DT-75 bulldozer
The bulldozer is a basic DT-75 crawler tractor with various types of bulldozer attachments installed on it.
This special equipment is very popular due to its technical parameters and functionality, including:
- reliability during operation and practicality in repair;
- economical operation due to the small but sufficient power of the power unit;
- increased cross-country ability due to low weight and modernized tracked chassis;
- the versatility of using special equipment to perform a variety of work by installing a variety of replaceable attachments on the rear suspension;
- high comfort of the driver's cabin and ease of control of the bulldozer.
The tractor is equipped with a diesel power unit with an additional starting engine and a pre-heater. The all-metal driver's cabin is completely sealed and equipped with a ventilation system and a heater. This allows the bulldozer to be operated at any outside temperature and in various weather conditions.
Additionally, the DT-75 bulldozer can be equipped with:
- reverse gear;
- creeper;
- rear hydraulic linkage;
- towing device.
These units can significantly expand the functionality of special equipment to carry out a wide variety of work.
Hydraulics
The control of the working bodies is hydraulic, providing easy and smooth control over all operations performed.
The design of the DT-75DERS2 tractor uses a double-acting hydraulic cylinder. Hydraulic cylinders are designed for lifting and moving loads when performing various jobs. A special thread on the body allows you to attach a hydraulic cylinder and use it as a power element in various devices.
Hydraulic return allows you to quickly return the rod to its original position, reducing the work cycle. The hydraulic system of the DT-75DERS2 tractor uses reliable and high-quality hydraulic cylinders that effectively carry out their operations.
Types and features of bulldozer equipment for DT-75
Three main types of mounted bulldozer equipment (blades) can be installed on the DT-75 tractor:
1. Fixed blade BNDT-10 or DZ-42 , used in road construction and industry for shifting and moving various types of soil, leveling earthen embankments and bulk building materials (sand, gravel) on the surface, clearing snow from various sites, backfilling pits, etc. .d.
This equipment includes:
- working body in the form of a rectangular steel bucket of straight or spherical shape with replaceable technological knives in the lower part;
- two push bars, hingedly attached to the tractor frame;
- two hydraulic cylinders for raising and lowering the bucket, mounted on the front of the tractor frame on either side of the engine.
Additional shields can be installed in the upper part of the bucket to protect the tractor radiator and hydraulic cylinders from damage.
In the modification of the DZ-42G equipment, only one hydraulic cylinder is used, installed centrally in front of the tractor radiator.
To work on soft soils and peat bogs, instead of the BNDT-10, the BNDT-20 fixed blade, which is large in size, can be used.
2. The rotary blade BPDT or DZ-42P has wider functionality compared to a fixed blade, due to the change in the angle of rotation of the working element relative to the longitudinal axis of the tractor up to 25 degrees in both directions. This allows you to more effectively clear roads of snow, fill trenches, and level different areas of the terrain.
It includes:
- a working body (bucket) having on the reverse side a spherical attachment point to the pushing frame;
- a pushing U-shaped frame, hingedly attached to the tractor body and to the working element by means of a spherical hinge;
- two side pushers, hinged at the edges of the bucket and to the pushing frame;
- two screw stops hinged on the top of the bucket and the push frame;
- two hydraulic cylinders to control the raising and lowering of the working body.
The working body is attached to the pushing frame in three places: in the center using a spherical hinge and at the edges using pushers. The rotation angle of the bucket is adjusted by changing the length of the side pushers by rearranging their attachment points to the pushing frame. Using screw stops, the required cutting angle of the knives is set.
Instead of metal knives, rubber knives can be installed at the bottom of the bucket for working on soft soils or clearing roads of freshly fallen snow.
3. The universal rotary blade BUDT with hydraulic drive is capable of performing any type of bulldozer work in construction and industrial production by changing the plane of the working body using three hydraulic cylinders, the operation of which is controlled from the tractor cabin.
The main feature of this type of bulldozer equipment is the presence of a separate hydraulic cylinder that controls the rotation of the working body at an angle of up to 25 degrees in any direction from the longitudinal axis of the tractor.
Principle of operation
At the beginning of the work of the DT-75DERS2 bulldozer, the cutting part of the blade is buried in the ground, while the machine simultaneously moves forward. The soil separated from the mass accumulates in front of the knife, forming a so-called drawing prism.
The separation of soil from the massif occurs until the drawing prism reaches the upper edge of the blade of this machine, after which the blade rises to the soil surface while moving, continuing to move the drawing prism to its destination.
The depressions encountered by this special equipment along the route are filled with soil from the drawing prism, and the elevations are cut off by the cutting edge of the blade. This is how site planning is carried out. If the material being moved needs to be distributed over the surface, then the blade must be raised to the required height when the machine is moving, equal to the thickness of the layer being poured.
We sell tractor DT-75, DT-75DTHS. Find out the price.
Designed to perform basic agricultural work in a unit with mounted, semi-mounted and trailed implements, as well as machines with passive and active working parts. DT-75 is a general-purpose tracked arable agricultural tractor, traction class 3. Depending on the engine configuration, the DT-75 tractor has the brand:- DT-75DT-75N with SMD-18N engine - manufactured by special order;
- DT-75D with A-41 engine (D-440-22);
- DT-75RM with RM-120 engine.
The main differences between the DT-75 tractor and the DT-75DTHS are the installation of special drive wheels and swamp tracks with a width of 670 mm.
Accordingly, the tractor track has been increased to 1570 mm. The DT - 75 tractor equipped with bulldozer equipment DZ - 42 - with a blade is designed for developing and moving soil of categories 1 and 2, digging and filling trenches, constructing embankments, moving crushed stone and other road building materials, clearing roads from snow, as well as for planning works.
DT-75DERS2
- Rear hydraulic linkage - no
- Reverse gearbox - yes
- Speed reducer - no
- Peat modification - no
DT-75DERS4
- Rear hydraulic linkage - yes
- Reverse gearbox - yes
- Speed reducer - no
- Peat modification - no
DT-75DTES2
- Rear hydraulic linkage - no
- Reverse gearbox - no
- Speed reducer - no
- Peat modification - yes
DT-75DTERS4
- Rear hydraulic linkage - yes
- Reverse gearbox - yes
- Speed reducer - no
- Peat modification - yes
DT-75DTEHS2
- Rear hydraulic linkage - no
- Reverse gearbox - no
- Speed reducer - yes
- Peat modification - yes
DT-75DTEHS4
- Rear hydraulic linkage - yes
- Reverse gearbox - no
- Speed reducer - yes
- Peat modification - yes
Characteristics of the DT-75 tractor
| Traction class | 3 |
| Diesel | D-440-22 (A -41) |
| Operating power, kW (hp) | 70 (95) |
| Torque reserve factor, % | 35 |
| Specific fuel consumption at operating power, g/kW.h (g/hp.h) | 238 (175) |
| Number of cylinders, pcs. | 4 |
| Working volume, l | 7,43 |
| Cylinder diameter/piston stroke, mm | 130/140 |
| Crankshaft rotation speed at operating power, | 1750 |
| Transmission | mechanical |
| Transmission | 7-speed with moving gears |
| Lubrication system | splashing |
| Clutch | dry double-disc |
| Speed reducer (optional) | manual five-speed |
| Reverse gearbox (optional) | mechanical three-stage |
| Number of gears: | |
| — forward travel (with speed reducer/reverse gearbox); | 7 (23 /10) |
| — reverse gear (with speed reducer/reverse gearbox) | 1 (5/5) |
| Forward speed range, km/h: | |
| - basic | 5,3 … 11,2 |
| - with creeper | 0,33 …11,2 |
| - with reverse gearbox | 3,17… 11,2 |
| Rear PTO (optional), rpm | single speed 540 or 1000 |
| Rotation mechanism | single stage planetary |
| Traction force (on stubble), kN: | |
| — nominal | 32 |
| — maximum | 36 |
| Hydraulic suspension system | separately - aggregate |
| Load capacity on the axis of the lower link joints, kgf | 2500 |
| Maximum pressure in the hydraulic system, MPa (kgf/cm²) | 16 (160) |
| Pump capacity, l/min | 45 |
| Dimensions and weight: | |
| Longitudinal base, mm | 1612 |
| Track, mm | 1330 |
| Ground clearance, mm | 370 |
| Track width, mm | (390) or 470 |
| Length (with attachment in transport position), mm | 4530 |
| Width, mm | 1850 |
| Height, mm | 2710 |
| Operating weight without ballast weights, kg | 6620 |
| Average pressure on the soil (without ballast weights), kPa | 41,5 |
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