Device and operating features
The D3-42 bulldozer is a self-propelled earth-moving crawler-type equipment that was in demand back in the days of the Soviet Union. The most significant and labor-intensive process in any construction is earthmoving, where in the modern race for time and quality of work, manual labor has practically become obsolete.
Advantages
The prototype for the creation of this unit was the well-known and popular model DT-75, on the basis of which the Volgograd Tractor Plant began to produce the D3-42 bulldozer, adding to it a number of unique technical characteristics and new features, namely:
- transportation of bulk materials;
- ground planning;
- digging pits;
- cleaning streets and roads from snow and dirt;
- erection of earth embankments, etc.
Flaws
The only drawback of the D3-42 bulldozer was and remains the low speed of movement, but its power, traction, performance and reliable uninterrupted functionality more than compensate for this minus. In addition, the advantage of the D3-42 is its maintainability, that is, if any element fails, it is quite easy to replace it.
Modifications
Thanks to the modernization work, the same DT-75 tractors left the assembly line, but already equipped with rotary and non-rotary blades.
Based on the type of blade, there were two versions of this special equipment:
- D3-42P is a unit with a full-turn blade, which has the ability to change the tilt of the blade mechanism. Its distinctive characteristics were the presence of a hydrotransfer function and, in fact, a rotary mechanism. Improved maneuverability indicators made it possible to significantly increase productivity in the implementation of working manipulations.
- D3-42 - had a fixed dump mechanism.
- D3-42T is a special model capable of earthworks on wet and swampy soils, for which it received its second name "peat modification".
Today, the manufacturer VgTZ continues to produce various modifications of the D3-42, which are in high demand.
Technical specifications
The D3-42 bulldozer is characterized by the 3rd class of traction, and the main difference between the D3-42 and the basic version of the DT-75 is the use of a reverse gearbox and a dump mechanism. This makes it possible to operate it in difficult climatic conditions and on difficult soils belonging to 1 - 2 categories.
The turbocharged diesel is equipped with a liquid-based cooling system, which allows the bulldozer operator to operate the equipment for a long time without interrupting for cooling pauses.
In addition to the D3-42, D3-42P and D3-42T models, another modification was created, namely, the D3-42G bulldozer, designed to provide land reclamation services in agriculture, for operation in mountainous areas and other locations where medium heavy soil .
This model of earth-moving special equipment has a powerful (up to 90 l / s) power plant and dimensions that differ upwards. And the hydraulic cylinder with double-sided working action allows the blade to enter the ground up to a depth of 30 cm and rise to a height of up to 63 cm.
So that you can visualize the differences between the D3-42G bulldozer and the basic D3-42 model in terms of technical characteristics, you should be guided by this table:
Technical details | D3-42 | |
|---|---|---|
| Dimensions, mm | 4980x2560x2650 | 5200x2800x2710 |
| Ground clearance, mm | ||
| Total weight, kg | ||
| Tank volume, l | ||
| Number of gears | ||
| KP | Mechanics | Mechanics |
| move | On tracks | On tracks |
| Engine power, l/s | ||
| Cylinders, pcs | ||
| Speed, km/h | ||
| D/T consumption, l/h | ||
| Blade dimensions, mm | ||
| Lifting height, mm | ||
| Deepening, mm |
Device
The multifunctional unit D3-42 has been widely used due to a well-designed design and layout, namely:
- The engine runs on diesel fuel, is started by an electric starter and has 5 models of execution, which are four-stroke power plants.
- The models differ only in power: RM-80 and SMD-14NG - 80 l / s; A-41 - 90 l / s; SMD-18N, D245.5S2, D440-22 - 95 l/s.
- The caterpillar undercarriage system is installed in all models of this special equipment. A solid metal frame and spring-type suspension are used. In the space between the caterpillar tracks there are side rails, firmly docked with the cross beam, which helps to withstand heavy loads and not damage the topsoil, which is especially important for agricultural manipulations.
- The size of the caterpillar track depends on the model and can vary from 390 to 470 mm.
- The hydraulic system has in its design a pump, a distributor with a hydraulic lock, a power hydraulic cylinder and a safety valve that controls the hinged mechanism. Hydraulics receives oil through the oil tank and filter.
- The manual transmission is seven-speed. Installed near the rear axle. To start the movement, a dry clutch is used - a closed two-disc part.
- It brakes this unit with band brakes.
The modern cab is designed with past mistakes in mind, which has increased the productivity of the bulldozer operator, namely:
- a good overview gives the driver the opportunity to observe all areas of work;
- reinforced with a frame for safety;
- comfortable double seat with the ability to adjust for certain parameters of the driver;
- the presence of a heating, air conditioning and air purification system.
Separately, I would like to pay attention to attachments, which have 4 types:
- BNDT-10 is a non-rotating version, weighing almost 830 kg, with a rotation angle of 25 degrees and a width of 2 m 52 cm. It is used for snow removal and construction sites.
- BNDT-20 is an analogue of the first option, but with a width of 2 m 80 cm and a weight of 874 kg.
- BPDT - a rotary version with an angle of rotation of 25 degrees relative to the axis of the unit, weighing 1 t 70 kg and a width of 2 m 80 cm.
- BUDT - technical characteristics are the same as those of BPDT, but it has a skew of 8 degrees along the transverse plane, which makes this type a universal rotary mechanism.
When moving forward, the blade is buried in the ground, which contributes to cutting the soil. The resulting soil prism is dragged in front of the bulldozer to the place of unloading. Then the dump mechanism rises and in this position the equipment returns to the point of collecting soil.
The D3-42 bulldozer is gaining the maximum volume of the drawing prism on a piece of soil with a length of 6 to 8 m. The expedient length of soil movement does not go beyond 60 m.
If you have an urgent need to rent special equipment of this type, then pay attention to the main operational parameters, namely, hourly productivity and traction data.
Analogues
The average price of a new D3-42 unit varies from 1.2 to 1.6 million rubles. Used options can be found from 0.7 to 0.9 million rubles. "Tired" devices offer from 145 thousand rubles to 250 thousand rubles.
Bulldozers can serve as an analogue:
- B10M.0101-E (TG-170M.01-1E) - from 3 to 3.5 million rubles.
- Shantui - 5 to 4 million rubles
So the described model is the best option in terms of price / quality ratio.
The DZ-42 bulldozer is presented as a self-propelled earth-moving vehicle. The model is distinguished by the presence of caterpillar traction, due to which the cross-country potential is significantly increased. The bulldozer was put into serial production by the Volgograd Tractor Plant.
The DZ-42 model is used when moving bulk material, as well as during leveling the soil. DZ-42 is necessary for the construction of earthen embankments and the removal of the top layer of soil.
DZ-42 is built on the platform of the DT 75 model. As a result of painstaking work, the designers have somewhat improved performance.
The basic variation of the model is equipped with different versions of moldboard attachments. In addition, DZ 42 can be equipped with a universal rotary blade.
Its feature is the presence of a hydrotransfer function or the installation of a rotary type mechanism.
The most problematic moment of the DZ 42 model can be called the minimum speed of movement. However, this disadvantage is more than offset by high performance.
Uninterrupted operation over a long period of time, as well as maximum reliability during operation are very important qualities for this type of equipment. The advantages of this model also include high maintainability.
In the event of a breakdown of a particular part, it is enough to simply replace this element.
Purpose
Installation of additional equipment allows digging trenches and pits, as well as cleaning roads from dirt and snow cover. In addition, DZ 42 is used in industry and agriculture.
The model can be used to solve various problems:
- preparation of channels for water drainage;
- embankment construction;
- building plot planning;
- backfilling of pits.
Installation of additional equipment allows you to separate frozen or highly compacted soil, and then loosen it.
Photo bulldozer DZ-42
There are three main types of blade that are installed on the DZ 42:
- Fixed blade BNDT-10. It is applied in the industry and road construction. The presence of such equipment allows leveling earth embankments and bulk materials. To work on soft ground, it is best to use another variation of the fixed blade - BNDT-20. Such equipment is large in size, so it is more practical to use.
- Rotary blade BPDT-10. This equipment has a wider functional potential. If necessary, here you can change the angle of rotation of the working body with respect to the longitudinal axis up to 25 degrees. Such a blade is most effective when cleaning the road from snow or when filling a trench.
- Universal swivel blade BUDT. Such equipment is distinguished by the presence of a built-in hydraulic drive, as a result of which the blade is used when carrying out any type of bulldozer work. Bulldozers equipped with such equipment are used in construction and industrial production.
Device
The DZ-42 bulldozer is equipped with a four-stroke diesel engine with four cylinders. It should be noted the fact of the rigid attachment of the transverse beam to the brackets of the spars. The latter are located between the rollers, on which the main focus falls during movement. The hydraulic system consists of a distributor with three sections and a hydraulic pump.
The DZ-42 model is distinguished by a well-thought-out layout and a well-organized design. The driver's cab offers a good overview, which allows you to control all work areas.
The accessory diesel power plant is additionally equipped with a preheater. Due to the presence of this element, the bulldozer motor can start even at minimum temperatures.
Scheme of the bulldozer DZ-42
1 - knife; 2 - blade; 3 - visor; 4 - bracket; 5 - hydraulic cylinder for lifting and lowering the blade; 6 - basic tractor; 7- hydraulic distributor control lever; 8 - draft hinge; 9 - push bar.
The driver's cabin is made of solid metal of increased strength. It is very securely sealed and also equipped with a ventilation system and a heater. This allows you to work on site in all weather conditions.
The position of the seat can be easily changed depending on the anthropometric data of the driver. This significantly reduces the level of fatigue during long-term work. If necessary, you can slightly shift the driver's cab from the main axis of the bulldozer. This allows you to slightly improve the overview and clearly control all the details of the workflow.
Specifications
The diesel component of the turbocharged power unit is additionally equipped with a liquid cooling system. Thanks to this, the bulldozer can operate for a long period of time. The rated power of the power plant is kept at 95 hp.
Specifications of the model in the table:
The motor is started by pressing the electric starter. It works with a friction clutch and a seven-speed manual gearbox. The standard tank capacity is kept at 245 liters.
As the basic working body of the bulldozer, a non-rotary blade is used, which is fixed to the transverse beam with two pushing bars. In its original position, the equipment is held by a rigid screw brace.
The blade itself is driven by two hydraulic cylinders. The width of the equipment is equivalent to 2.5 meters, but the height can vary from 80 to 90 cm, depending on the modification of the model.
DZ-42 g is designed to perform land reclamation and construction work on soils with an average degree of severity. As the main equipment, a swivel-type bulldozer blade is used here. As a result, the operational potential of the model increases somewhat.
Bulldozer DZ-42G
This variation of the bulldozer is equipped with a power plant, the rated power of which does not exceed 90 hp. In this case, the overall dimensions of the model will be slightly larger. The blade is raised and lowered using a double-acting hydraulic cylinder. It can deepen by 30 cm, and the maximum height of its rise is kept at 63 cm.
The main differences from the basic modification are noted in the table:
| Specifications | Indicators |
| Dimensions: | |
| - length | 5200 mm |
| - width | 2800-2240 mm |
| - height | 2710 mm |
| - ground clearance | 395 mm |
| total weight | 7590 kg |
| Volume of the tank | 245 l |
| Number of gears (forward) | 7 |
| Transmission | mechanical |
| Chassis type | crawler |
| Engine: | |
| - power | 90 HP |
| - number of cylinders | 4 |
| Speed characteristics | |
| - max. speed | 5.3-11.3 km/h |
| Fuel consumption | 11 l/hour |
| Blade dimensions: | |
| - length | 2800 mm |
| - height | 800 mm |
| - lifting height | 635 mm |
| - deepening | 300 mm |
On the video, the DZ-42 bulldozer in operation:
Source: http://allspectech.com/stroitelnaya/buldozery/na-gusenichnom-hodu/dz-42.html
Bulldozer DZ 42 based on DT 75
Bulldozer DZ 42 is a self-propelled earth-moving machine operating on caterpillar tracks. In Soviet times, the model was distributed throughout the country.
The production of equipment was carried out at the Volgograd Tractor Plant. The popular tractor DT 75, released in 1963, served as the basis for creating a bulldozer.
In comparison with the prototype DZ 42, it lost significantly in speed, but received a reversible gearbox and the ability to work with soils of the 1st and 2nd degree of complexity. The bulldozer represented the third traction class and had enough power to perform heavy operations.
Scope of use of DZ 42:
- cutting and moving bulk materials and soil over short distances;
- carrying out work in agriculture (compacting the silo, equipping storage facilities, cleaning manure);
- digging pits, pits, trenches;
- planning of building plots;
- performance of work in public utilities (cleaning roads from snow and dirt);
- soil loosening.
Modifications and features
The DZ 42 bulldozer was produced in several modifications, differing in the type of blade used and the design:
- basic version DZ 42 with a non-rotating dump mechanism;
- DZ 42P with a full-revolving dump mechanism. The device is mounted with universal joints on the bars. The rear part of the push bar is joined to a special beam using harness hinges. The hinges keep the machine operational in the event of a misalignment, allowing you to change the angle of inclination of the equipment relative to the ground surface. The modification is available in 2 versions: with a direct swivel blade and with a universal swivel blade with a hydraulic skew function;
- DZ 42T with increased footprint, wide tracks and high ground clearance. Peat modification confidently overcomes forest blockages, deep ruts and other obstacles. Each track DZ 42T includes 42 links with special lugs that improve patency and prevent falling into shaky soil;
- DZ 42G and DZ 42G-1 with 2-way hydraulic cylinder. Modifications are used to perform work in mountainous areas, land reclamation operations in agriculture in areas with medium-heavy soil.
Advantages of the DZ 42 model:
- high performance;
- maximum reliability;
- long operation without refueling;
- universality;
- maintainability.
The main disadvantage of the model is the low speed of movement and obsolescence of the design.
Versatility, affordability and sufficient reliability allow DZ 42 to remain in demand at the present time.
Dimensions:
- length - 4980 mm;
- width - 2560 mm;
- height - 2650 mm;
- ground clearance - 380 mm;
- front track - 1330 mm;
- rear track - 1330 mm.
The total weight of the equipment is 7390 kg, the specific ground pressure is 0.47 kg/sq.cm.
The bulldozer could move in the speed range from 0.33 to 11.1 km / h, which made it possible to adapt to various operating conditions. The traction force was 36.5 kN.
The main working body of DZ 42 in the standard version was a fixed blade, which was used to move the soil at a distance of 50-150 m.
Equipment characteristics:
- length - 2560 mm;
- height - 800 mm;
- maximum lifting height - 830 mm;
- maximum recess - 410 mm.
For the DZ 42G model, a blade with the following characteristics was used:
- length - 2800 mm;
- height - 800 mm;
- maximum lifting height - 635 mm;
- maximum recess - 300 mm.
Device and operating features
The DZ 42 model is built on the basis of the DT 75 tractor. For most elements, these machines are unified. For the bulldozer, an all-metal frame is used, rigidly fixed with side member brackets, which allows it to withstand severe loads.
All DZ 42 modifications are equipped with a caterpillar undercarriage, including a spring-type suspension. The width of the track depends on the version of the machine and can vary from 390 to 470 mm. The bulldozer creates minimal pressure on the ground and does not damage the fertile soil layer.
DZ 42 is equipped with a manual transmission, which includes a 7-speed gearbox installed at the rear axle. Dry 2-disc permanently closed clutch is used to start the movement.
Band brakes are the main element of the braking system. The rear axle is equipped with 2 planetary reduction gears to reduce the loads generated in corners.
The hydraulic system of the bulldozer contains a pump, a hydraulic power cylinder, a distributor with a hydraulic lock and a safety valve that controls the hinged mechanism. Oil enters the hydraulic system through a filter and an oil reservoir.
The driver's cabin of the bulldozer is made of solid metal and has increased strength. The interior is securely sealed to prevent dust particles from entering.
A heater and a ventilation system are also installed inside, which allow the equipment to be operated regardless of weather conditions. An additional cab reinforcement in the form of a roll cage protects the operator even if the machine rolls over.
The cab shifts relative to the base of the dozer if necessary, providing excellent visibility during excavation.
For the operator, a 2-seater sprung seat is provided, the position of which can be changed taking into account anthropometric data. Ergonomic arrangement of organs and thoughtful layout of the cabin reduce the degree of fatigue during constant work.
As the main working body on the DZ 42, a fixed blade is used, installed using trunnions on a beam and box-shaped pushing bars. The stable position of the organ is achieved due to the hydraulic strut and the screw strut.
The compensation mechanism keeps the blade in a horizontal position, preventing distortion. Replaceable cutting knives with 2 blades are installed in the lower part. In the central area there is a special visor that prevents soil from spilling over the top of the blade.
The equipment is set in motion by means of 2 hydraulic cylinders mounted on brackets.
The following types of blades are used for the bulldozer:
- base fixed blade BNDT-10;
- oversized fixed blade BNDT-20;
- rotary blade BPDT-10 with great functionality;
- universal swivel blade BUDT with built-in hydraulic drive.
Engine
DZ 42 is equipped with several types of 4-stroke diesel engines with liquid cooling and direct fuel injection. Power plants differ in individual structural elements and power:
1. D 440-22 - a unified engine with a vertical in-line arrangement of cylinders. Motor features:
- smoke proofreader;
- cast iron casting of crankcase with increased rigidity design;
- full-flow cleaning scheme;
- multi-section fuel pump equipped with an emergency stop valve;
- full-bearing crankshaft with thin-walled bearing shells and hardened necks;
- launch using the P-350-1 starting engine;
- cast iron cylinder head.
Characteristics D 440-22:
- rated power - 95 hp;
- rated speed - 1750 rpm;
- maximum torque - 532.5 Nm;
- specific fuel consumption - 162 g / hp. at one o'clock.
2. SMD-18R - Ukrainian analogue of the D 440-22 unit.
Source: http://buldozerspec.com/buldozer-dz-42/
History of VgTZ - bulldozer DZ-42
The history of the DZ-42 bulldozer began in 1963. This machine replaced the popular, but morally and technically obsolete caterpillar tractor DT-75. Unlike its prototype, the DZ-42 could be used to perform any earthmoving work and form construction sites.
The versatility of the equipment is determined by the installation of a universal blade with the ability to change the angle of inclination. It is worth noting that from the moment of creation to the present, several modifications of the DZ-42 have been produced, which are in great demand today.
Peculiarities
DZ-42, belongs to the third traction class. At the time of the creation of the machine, this was considered a good indicator of power. The main difference from the DT-75 is the installation of a reversible gearbox.
This makes it possible to maximize the use of all the capabilities of the machine.
Compared to the prototype, the DZ-42 noticeably lost in transport speed, but it got the opportunity to work with soils that belong to the first and second categories of complexity.
The technique is used in the housing and communal services sector (digging pits and trenches intended for utilities), construction and agriculture. Among the most popular modifications, one can single out the DZ-42 G and DZ-42 T. The first machine was developed specifically for land reclamation work, the second - for operation in wetlands and difficult soils.
Bulldozer blades, which are equipped with equipment, can be represented by two types: swivel and non-swivel. Each of them is designed to perform a certain type of work. The complete set of equipment with a dump is carried out at the request of the customer.
Given the capabilities of the DZ-42, it makes sense to get to know him better.
Specifications
Engine. Several types of engines can be installed on the DZ-42. All power units are diesel, four-stroke. The difference is only in the power of the motors. Here is a list of models offered:
- D 440-22 with a power of 95 hp
- SMD-18N is the Ukrainian analogue of the previous model.
- RM-80, capable of delivering up to 80 "horses".
- D 245.5S2 - 95 horsepower.
- A-41 - 90 hp
The average fuel consumption is about 8.4 liters per hour worked. The speed range of the bulldozer varies from 0.3 to 11 km/h. All power units are four-cylinder, with direct fuel injection. The engine is started by means of an electric starter. All engines are equipped with a liquid cooling system.
Chassis. All modifications of the bulldozer were released on tracks. The designers used an all-metal frame and a spring suspension scheme. At the same time, the transverse beam was rigidly connected to the side spars. The spars were located between the track rollers. By the way, the main load fell on the rollers.
The width of the caterpillar track is 390-470 mm (depending on the modification), this ensures the pressure of the equipment on the ground within 0.47 grams per square centimeter. This is a very important point in the performance of agricultural work. The bulldozer does not cause damage to the fertile soil layer.
Transmission and hydraulics. A mechanical transmission scheme is installed on the bulldozer. It is represented by a seven-speed gearbox, which is located next to the rear axle. Clutch - double-disk, dry permanently closed type. The bulldozer has band brakes.
To reduce the effort when turning the machine, the designers equipped the rear axle with two single-stage planetary gearboxes.
The built-in hydraulic system is responsible for the operation of attachments.
Workplace. The operator's cab is made in an all-metal version and is supplemented with a safety cage. It should be noted that it is possible to shift the cab relative to the bulldozer frame. This provides a better overview when working. For operation in various climatic conditions, a heater and a ventilation system are installed.
Mounted equipment. Three types of blade can be installed on the equipment:
- BNDT-10. This is a fixed mechanism that is used for leveling earth embankments and inert materials (sand, crushed stone).
- BPDT-10. This mechanism can change its position relative to the bulldozer frame up to 25 degrees. The equipment is used to form construction sites and clean streets from snow.
- BUDT. Universal blade with the ability to rotate the mechanism. Can be used for any job.
General specifications
Advantages and disadvantages
Crawler bulldozer DZ-42 is very unpretentious in terms of maintenance and use of low-quality fuel. The equipment is adapted to work in all regions of the country. In addition, with fairly good power indicators, the bulldozer is much lower than its classmates.
Among the shortcomings, one can single out a low level of comfort in the cab and a low transport speed. During operation, oil leaks in the hydraulic system were noticed.
TELL YOUR FRIENDS
The DZ-42 bulldozer is presented as a self-propelled earth-moving vehicle. The model is distinguished by the presence of caterpillar traction, due to which the cross-country potential is significantly increased. The bulldozer was put into serial production by the Volgograd Tractor Plant.
The DZ-42 model is used when moving bulk material, as well as during leveling the soil. DZ-42 is necessary for the construction of earthen embankments and the removal of the top layer of soil.
DZ-42 is built on the platform of the DT 75 model. As a result of painstaking work, the designers have somewhat improved performance. The basic variation of the model is equipped with different versions of moldboard attachments. In addition, DZ 42 can be equipped with a universal rotary blade. Its feature is the presence of a hydrotransfer function or the installation of a rotary type mechanism.
The most problematic moment of the DZ 42 model can be called the minimum speed of movement. However, this disadvantage is more than offset by high performance.
Uninterrupted operation over a long period of time, as well as maximum reliability during operation, are very important qualities for.
The advantages of this model also include high maintainability. In the event of a breakdown of a particular part, it is enough to simply replace this element.
Purpose
Installation of additional equipment allows digging trenches and pits, as well as cleaning roads from dirt and snow cover. In addition, DZ 42 is used in industry and agriculture.
The model can be used to solve various problems:
- preparation of channels for water drainage;
- embankment construction;
- building plot planning;
- backfilling of pits.
Installation of additional equipment allows you to separate frozen or highly compacted soil, and then loosen it.
Photo bulldozer DZ-42 
There are three main types of blade that are installed on the DZ 42:
- Fixed blade BNDT-10. It is applied in the industry and road construction. The presence of such equipment allows leveling earth embankments and bulk materials. To work on soft ground, it is best to use another variation of the fixed blade - BNDT-20. Such equipment is large in size, so it is more practical to use.
- Rotary blade BPDT-10. This equipment has a wider functional potential. If necessary, here you can change the angle of rotation of the working body with respect to the longitudinal axis up to 25 degrees. Such a blade is most effective when cleaning the road from snow or when filling a trench.
- Universal swivel blade BUDT. Such equipment is distinguished by the presence of a built-in hydraulic drive, as a result of which the blade is used when carrying out any type of bulldozer work. Bulldozers equipped with such equipment are used in construction and industrial production.
Device
The DZ-42 bulldozer is equipped with a four-stroke diesel engine with four cylinders. It should be noted the fact of the rigid attachment of the transverse beam to the brackets of the spars. The latter are located between the rollers, on which the main focus falls during movement. The hydraulic system consists of a distributor with three sections and a hydraulic pump.
The DZ-42 model is distinguished by a well-thought-out layout and a well-organized design. The driver's cab offers a good overview, which allows you to control all work areas.
The accessory diesel power plant is additionally equipped with a preheater. Due to the presence of this element, the bulldozer motor can start even at minimum temperatures.
Scheme of the bulldozer DZ-42 
1 - knife; 2 - blade; 3 - visor; 4 - bracket; 5 - hydraulic cylinder for lifting and lowering the blade; 6 - base tractor; 7- hydraulic distributor control lever; 8 - harness hinge; 9 - push bar.
The driver's cabin is made of solid metal of increased strength. It is very securely sealed and also equipped with a ventilation system and a heater. This allows you to work on site in all weather conditions.
The position of the seat can be easily changed depending on the anthropometric data of the driver. This significantly reduces the level of fatigue during long-term work. If necessary, you can slightly shift the driver's cab from the main axis of the bulldozer. This allows you to slightly improve the overview and clearly control all the details of the workflow.
Specifications
The diesel component of the turbocharged power unit is additionally equipped with a liquid cooling system. Thanks to this, the bulldozer can operate for a long period of time. The rated power of the power plant is kept at 95 hp.
Specifications of the model in the table:
| Specifications | Indicators |
| Dimensions: | |
| - length | 4980 mm |
| - width | 2560-2240 mm |
| - height | 2650 mm |
| — ground clearance | 380 mm |
| total weight | 7390 kg |
| Volume of the tank | 245 l |
| 7 | |
| Transmission | mechanical |
| Chassis type | crawler |
| Engine: | |
| - power | 95 HP |
| - number of cylinders | 4 |
| Max. speed | 11.3 km/h |
| Fuel consumption | 8.4 l/h |
| Blade dimensions: | |
| - length | 2560 mm |
| - height | 800 mm |
| - lifting height | 830 mm |
| - deepening | 410 mm |
The motor is started by pressing the electric starter. It works with a friction clutch and a seven-speed manual gearbox. The standard tank capacity is kept at 245 liters.
As the basic working body of the bulldozer, a non-rotary blade is used, which is fixed to the transverse beam with two pushing bars. In its original position, the equipment is held by a rigid screw brace.
The blade itself is driven by two hydraulic cylinders. The width of the equipment is equivalent to 2.5 meters, but the height can vary from 80 to 90 cm, depending on the modification of the model.
DZ-42g
DZ-42 g is designed to perform land reclamation and construction work on soils with an average degree of severity. As the main equipment, a swivel-type bulldozer blade is used here. As a result, the operational potential of the model increases somewhat.
Bulldozer DZ-42G 
This variation of the bulldozer is equipped with a power plant, the rated power of which does not exceed 90 hp. In this case, the overall dimensions of the model will be slightly larger. The blade is raised and lowered using a double-acting hydraulic cylinder. It can deepen by 30 cm, and the maximum height of its rise is kept at 63 cm.
The main differences from the basic modification are noted in the table:
| Specifications | Indicators |
| Dimensions: | |
| - length | 5200 mm |
| - width | 2800-2240 mm |
| - height | 2710 mm |
| — ground clearance | 395 mm |
| total weight | 7590 kg |
| Volume of the tank | 245 l |
| Number of gears (forward) | 7 |
| Transmission | mechanical |
| Chassis type | crawler |
| Engine: | |
| - power | 90 HP |
| - number of cylinders | 4 |
| Speed characteristics | |
| - max. speed | 5.3-11.3 km/h |
| Fuel consumption | 11 l/hour |
| Blade dimensions: | |
| - length | 2800 mm |
| - height | 800 mm |
| - lifting height | 635 mm |
| - deepening | 300 mm |
On the video, the DZ-42 bulldozer in operation:
Any construction begins with earthworks. This is the development of soil, its movement or loading onto dump trucks. Always when constructing the foundation or foundation of a building, a foundation pit of a given area and depth is dug, and trenches are needed to lay a pipeline.
The proportion of earthworks in construction is the most massive and labor-intensive, and therefore manual methods are not applicable here. Pit pits are dug in a mechanized way. In this case, specialized earth-moving and earth-moving machines are used.
Bulldozers are used to cut and move the layers of soil, as well as its laying and planning, with the help of which these processes are mechanized. The most common, having high traction and cross-country ability, are caterpillar bulldozers.
DZ-42 - a bulldozer used in the development of soils of the first and second categories. Can move bulk material and plan the area for construction. The bulldozer removes the soil in layers, erecting embankments if necessary. The developers have incorporated a number of unique characteristics into the DZ-42 device, giving this heavy machine additional capabilities. This is not only the digging of trenches and pits, but also the movement of various bulk materials, clearing roads from snow, and use in agricultural and public utilities.
History of creation
The invention of the caterpillar is as great and fundamental as the invention of the wheel. But if the creator of the wheel is unknown, then the caterpillars were invented by the Russian peasant Fedor Abramovich Blinov, who was born in 1827 in the village. Nikolskoye, belonging to the Volsky district of the Saratov province. The inventor's parents were serfs.
The Supreme Council of the National Economy of the Soviet Union in 1926 adopted a resolution on the construction of a tractor plant in Stalingrad. The laying of the Stalingrad, and later the Volgograd Tractor Plant (VgTZ) took place on 07/12/1926, and already on 06/17/1930 the first STZ-1 was produced - a wheeled tractor with an 30 hp engine. By 1932, more than 140 tractors per day had already rolled off the assembly line of the plant.
The basic model of the DZ-42 bulldozer is the DT-75 caterpillar tractor, the production of which was launched in 1963. Unlike its predecessor, the DZ-42 performed any earthmoving work and was used in the formation of construction sites. The versatility of the bulldozer was ensured by the fact that a universal blade was installed on it, on which it was possible to change the angle of inclination.
Currently, VgTZ is a tractor company that is part of the Tractor Plants concern. During the existence of the production, the enterprise has produced a number of modifications of the DZ-42, the demand for which remains at a high level.
For example, at the Soviet research drifting station "North Pole-30", opened on 10/09/1987 and existed until 04/04/1991, the DT-75 swamp vehicle and the DZ-42 bulldozer worked as transport.
Specifications
Bulldozer DZ-42 has the third traction class. At the time of the creation of the base model of the car, this was a good indicator of power for her. The main difference from the basic model DT-75 is the installation of a reverse gearbox and blade, which allows you to fully use the technical potential of the bulldozer. At the same time, the machine noticeably lost in speed, but it became possible to work with complex soils belonging to the categories of the first and second levels.
The main working body of the DZ-42 is a fixed blade, fixed with the help of box-shaped push bars and trunnions on a beam located transversely. A stable working position of the blade is ensured by a rigid screw brace and hydraulic brace. In a horizontal position, the blade is held by a compensation mechanism that prevents distortion by evenly distributing the load. Replaceable cutting knives with two blades are installed on the lower edge of the blade. The central part is equipped with a special visor that does not allow soil to spill over the upper part of the blade edge. Two hydraulic cylinders mounted on brackets and setting the blade in motion are controlled by a hydraulic system with a gear pump and a three-section hydraulic distributor included in it.
Main technical and overall-mass indicators:
- Dimensions (length✕width✕height), mm - 4980✕2560✕2650.
- Ground clearance (clearance), mm - 380.
- Total weight, kg - 7390.
- The volume of the fuel tank, l - 245.
- Gearbox - mechanics.
- Chassis - caterpillar.
- Engine model - five different models of four-stroke four-cylinder engine ranging from 80 to 95 hp.
- The maximum developed speed, km / h - 11.3.
- Diesel fuel consumption, l/h - 8.4.
- Blade dimensions (lengthXheightXlifting heightXdepth), mm - 2560✕800✕830✕410.
Engine
Five different engine models are installed on the DZ-42 bulldozer, which are four-stroke diesel power units with direct fuel injection and liquid cooling. The only difference between them is the output power:
- RM-80 and SMD-14NG develop a power of 80 hp.
- A-41 - 90 hp
- D 440-22, SMD-18N, D 245.5S2 - 95 hp
Electric starter engine start. The average consumption of diesel fuel is in the range of 8.4 l / h, and the developed speed is 03.-11 km / h.
Running system
All models of the DZ-42 bulldozer have a caterpillar chassis. An all-metal frame and a spring suspension are used. The side spars located between the caterpillar rollers, which bear the main load, are rigidly connected to the transverse beam.
On various modifications, a caterpillar track with a width of 390-470 mm is used. At the same time, the pressure of no more than 0.47 g/cm2 created on the soil during agricultural work does not damage the fertile soil layer.
Transmission and hydraulics
The DZ-42 bulldozer is equipped with a mechanical seven-speed gearbox (KP) located at the rear axle. For driving, a dry, permanently closed double-disc clutch is used. Band brakes are installed on the DZ-42.
To reduce the loads created when the bulldozer turns, the rear axle is equipped with two planetary gearboxes.
The built-in hydraulic system, consisting of a hydraulic power cylinder, a hydraulic pump, a hydraulic valve with a hydraulic lock and a hydraulic safety valve, controls the attachment. Oil is supplied to the hydraulic system through an oil tank and a filter.
Cabin
The driver's cab is made of all-metal and reinforced for safety with a frame. The cabin can be shifted relative to the DZ-42 base, which provides the most complete overview during excavation.
The output channels of the heater, air conditioner and air cleaner, which the bulldozer is equipped with, are brought into the cab. A sprung double adjustable driver's seat is also installed here.
Start of operation
Before leaving for work, the driver-machinist inspects the DZ-42 bulldozer and eliminates the malfunctions found during the inspection. The inspection is carried out with the engine turned off.
The operation of a bulldozer that is out of order is strictly prohibited.
Only trained and licensed driver-machinists are allowed to work on the DZ-42. It is necessary to check whether the lighting installed on the bulldozer provides sufficient visibility of the entire surrounding working area. Do not leave a running machine unattended, and do not adjust and lubricate while driving. It is possible to start maintenance and repair of the bulldozer only after the engine is completely stopped.
During operation, the driver-machinist deepens the blade into the ground by 410 mm at an angle of 55 ° and directs the movement of the bulldozer in the right direction. At the same time, the desired layer of soil is cut off with knives and at the same time moves to the place allotted for unloading. This process is called dumping, after which the blade must be raised, and then the cycle must be repeated again. The ground moves at a distance of no more than 60 m.
Attachment
The following dumps are installed on the DZ-42:
- BNDT-10- fixed blade with a width of 2520 mm and a weight of 829.6 kg, capable of changing position by 25 ° in relation to the base of the bulldozer. It is mainly used in planning construction sites and cleaning roads from snow.
- BNDT-20- completely identical to the BNDT-10 model, except for the width (2800 mm) and weight (874 kg).
- BTCP- a blade swivel with respect to the longitudinal axis of the bulldozer with a width of 2800 mm, a weight of 1070 kg and a rotation angle of 25 °.
- BUDT- a universal swivel blade with a similar BPDT angle of rotation, width and weight, having a skew angle of 8 ° in the transverse plane.
All blades have the same lift height of 650 mm and a maximum depth of 410 mm at a cutting angle of 55°. The slope of the bulldozer is allowed up to 20 °. Any dump is controlled by means of two hydraulic cylinders, with the exception of the BUDT, which has three such devices.
Modifications
In addition to the basic DZ-42 model used in construction, utilities and agriculture, there are three more main modifications that should be considered in more detail.
- DZ-42G- a model specially developed for agriculture, used mainly in land reclamation work, as well as in mountainous areas. This bulldozer is equipped with one double-sided hydraulic cylinder.
- DZ-42T- used in swampy and impassable places. This modification even received the name "peat". Due to the width of the tracks, the bulldozer has a significantly increased bearing area, and a high ground clearance (37 cm) allows you to overcome blockages, ruts and other obstacles. Track links are equipped with lugs, which allows the DZ-42T to work on moving ground in wetlands, without falling into unsteady ground or peat.
- DZ-42P- the model is equipped with a full-rotation blade, fixed by hinges on push bars mounted on a special transverse beam. When the blade is skewed due to the hinges, the bars turn and the bulldozer remains in working condition. At the same time, changing the angle of inclination with respect to the horizontal plane is very convenient when carrying out work to clear the streets of snow.
Operating experience, advantages and disadvantages
A long period of operation has shown the reliability of the DZ-42 bulldozer and its modifications, without revealing significant shortcomings, which can only be attributed to a decrease in speed, compared with the DT-75 prototype, due to the canopy of the blade.
This is a powerful and productive technique. Even a small speed does not interfere with adapting to a changing work environment. The bulldozer is subject to constant high loads, which are maintained due to its robust design. The margin of safety of DZ-42 allows it to continue its operation even after the end of the established regulatory period, which requires timely maintenance. The unification of most components and parts makes it possible to quickly replace them.
DZ-42 does an excellent job of digging pits, ditches and trenches, cutting water outlet channels, erecting embankments and backfilling holes. With the help of this bulldozer, plots and sites for storage facilities are planned for construction, embankments and ledges on slopes are equipped, and excavated soil is moved. Additionally, DZ-42 can be equipped with equipment for loosening solid soil.
Prices
The new DZ-42 bulldozer of the basic configuration with the fixed dump mechanism BNDT-10 at the beginning of 2016 cost 1493 thousand rubles.
A used 1993 model with the same blade, eighty-horsepower SMD-14NG engine and 2,300 hours of operation can be purchased for 450,000 rubles.
Summing up
The DZ-42 caterpillar bulldozer can be operated in all regions of Russia and abroad, it is undemanding to the quality of fuel and unpretentious in maintenance. With high technical and operational indicators, the cost of the DZ-42 is significantly lower than models similar in class.
The DZ-42 bulldozer is presented as a self-propelled earth-moving vehicle. The model is distinguished by the presence of caterpillar traction, due to which the cross-country potential is significantly increased. The bulldozer was put into serial production by the Volgograd Tractor Plant.
Caterpillar bulldozer DZ-42
The DZ-42 model is used when moving bulk material, as well as during leveling the soil. DZ-42 is necessary for the construction of earthen embankments and the removal of the top layer of soil.
DZ-42 is built on the platform of the DT 75 model. As a result of painstaking work, the designers have somewhat improved performance. The basic variation of the model is equipped with different versions of moldboard attachments. In addition, DZ 42 can be equipped with a universal rotary blade. Its feature is the presence of a hydrotransfer function or the installation of a rotary type mechanism.
The most problematic moment of the DZ 42 model can be called the minimum speed of movement. However, this disadvantage is more than offset by high performance.
Uninterrupted operation over a long period of time, as well as maximum reliability during operation are very important qualities for this type of equipment. The advantages of this model also include high maintainability. In the event of a breakdown of a particular part, it is enough to simply replace this element.
Purpose
Installation of additional equipment allows digging trenches and pits, as well as cleaning roads from dirt and snow cover. In addition, DZ 42 is used in industry and agriculture.
The model can be used to solve various problems:
- preparation of channels for water drainage;
- embankment construction;
- building plot planning;
- backfilling of pits.
Installation of additional equipment allows you to separate frozen or highly compacted soil, and then loosen it.
Photo bulldozer DZ-42
There are three main types of blade that are installed on the DZ 42:
- Fixed blade BNDT-10. It is applied in the industry and road construction. The presence of such equipment allows leveling earth embankments and bulk materials. To work on soft ground, it is best to use another variation of the fixed blade - BNDT-20. Such equipment is large in size, so it is more practical to use.
- Rotary blade BPDT-10. This equipment has a wider functional potential. If necessary, here you can change the angle of rotation of the working body with respect to the longitudinal axis up to 25 degrees. Such a blade is most effective when cleaning the road from snow or when filling a trench.
- Universal swivel blade BUDT. Such equipment is distinguished by the presence of a built-in hydraulic drive, as a result of which the blade is used when carrying out any type of bulldozer work. Bulldozers equipped with such equipment are used in construction and industrial production.
Device
The DZ-42 bulldozer is equipped with a four-stroke diesel engine with four cylinders. It should be noted the fact of the rigid attachment of the transverse beam to the brackets of the spars. The latter are located between the rollers, on which the main focus falls during movement. The hydraulic system consists of a distributor with three sections and a hydraulic pump.
The DZ-42 model is distinguished by a well-thought-out layout and a well-organized design. The driver's cab offers a good overview, which allows you to control all work areas.
The accessory diesel power plant is additionally equipped with a preheater. Due to the presence of this element, the bulldozer motor can start even at minimum temperatures.
Scheme of the bulldozer DZ-42
1 - knife; 2 - blade; 3 - visor; 4 - bracket; 5 - hydraulic cylinder for lifting and lowering the blade; 6 - base tractor; 7- hydraulic distributor control lever; 8 - harness hinge; 9 - push bar.
The driver's cabin is made of solid metal of increased strength. It is very securely sealed and also equipped with a ventilation system and a heater. This allows you to work on site in all weather conditions.
The position of the seat can be easily changed depending on the anthropometric data of the driver. This significantly reduces the level of fatigue during long-term work. If necessary, you can slightly shift the driver's cab from the main axis of the bulldozer. This allows you to slightly improve the overview and clearly control all the details of the workflow.
Specifications
The diesel component of the turbocharged power unit is additionally equipped with a liquid cooling system. Thanks to this, the bulldozer can operate for a long period of time. The rated power of the power plant is kept at 95 hp.
Specifications of the model in the table:
| Specifications | Indicators |
| Dimensions: | |
| - length | 4980 mm |
| - width | 2560-2240 mm |
| - height | 2650 mm |
| — ground clearance | 380 mm |
| total weight | 7390 kg |
| Volume of the tank | 245 l |
| 7 | |
| Transmission | mechanical |
| Chassis type | crawler |
| Engine: | |
| - power | 95 HP |
| - number of cylinders | 4 |
| Max. speed | 11.3 km/h |
| Fuel consumption | 8.4 l/h |
| Blade dimensions: | |
| - length | 2560 mm |
| - height | 800 mm |
| - lifting height | 830 mm |
| - deepening | 410 mm |
The motor is started by pressing the electric starter. It works with a friction clutch and a seven-speed manual gearbox. The standard tank capacity is kept at 245 liters.
As the basic working body of the bulldozer, a non-rotary blade is used, which is fixed to the transverse beam with two pushing bars. In its original position, the equipment is held by a rigid screw brace.
The blade itself is driven by two hydraulic cylinders. The width of the equipment is equivalent to 2.5 meters, but the height can vary from 80 to 90 cm, depending on the modification of the model.
DZ-42g
DZ-42 g is designed to perform land reclamation and construction work on soils with an average degree of severity. As the main equipment, a swivel-type bulldozer blade is used here. As a result, the operational potential of the model increases somewhat.
Bulldozer DZ-42G
This variation of the bulldozer is equipped with a power plant, the rated power of which does not exceed 90 hp. In this case, the overall dimensions of the model will be slightly larger. The blade is raised and lowered using a double-acting hydraulic cylinder. It can deepen by 30 cm, and the maximum height of its rise is kept at 63 cm.
The main differences from the basic modification are noted in the table:
| Specifications | Indicators |
| Dimensions: | |
| - length | 5200 mm |
| - width | 2800-2240 mm |
| - height | 2710 mm |
| — ground clearance | 395 mm |
| total weight | 7590 kg |
| Volume of the tank | 245 l |
| Number of gears (forward) | 7 |
| Transmission | mechanical |
| Chassis type | crawler |
| Engine: | |
| - power | 90 HP |
| - number of cylinders | 4 |
| Speed characteristics | |
| - max. speed | 5.3-11.3 km/h |
| Fuel consumption | 11 l/hour |
| Blade dimensions: | |
| - length | 2800 mm |
| - height | 800 mm |
| - lifting height | 635 mm |
| - deepening | 300 mm |
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