Crawler bulldozer dz 42. LLC “Mercator-Service ST” - Bulldozers

Any construction begins with excavation work. This is the development of soil, its movement or loading onto dump trucks. When constructing the base or foundation of a building, a pit of a given area and depth is always dug, and trenches are needed to lay a pipeline.
The share of earthworks in construction is the most massive and labor-intensive, and therefore manual methods are not applicable here. The pits are dug using a mechanized method. In this case, specialized earth-moving and earth-moving transport machines are used.
Bulldozers are used to cut and move layers of soil, as well as laying and leveling them, with the help of which these processes are mechanized. The most common, with high traction and cross-country ability, are crawler bulldozers.

DZ-42 is a bulldozer used in the development of soils of the first and second categories. Can move bulk material and plan construction areas. 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 vehicle additional capabilities. This is not only the digging of trenches and pits, but also the movement of various bulk materials, clearing roads of snow, and use in carrying out work in agriculture and public utilities.

History of creation

The invention of the caterpillar track is as great and fundamental as the invention of the wheel. But if the creator of the wheel is unknown, then the tracks were invented by the Russian peasant Fyodor Abramovich Blinov, born in 1827 in the village. Nikolskoye, belonging to the Volsky district of the Saratov province. The inventor's parents were serfs.

Supreme Council National economy Soviet Union in 1926, he adopted a resolution on the construction of a tractor plant in Stalingrad. The foundation of the Stalingrad, and subsequently 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 a 30 hp engine. By 1932, more than 140 tractors a day were already rolling off the plant’s assembly line.

The basic model of the DZ-42 bulldozer is the DT-75 tracked tractor, the production of which began in 1963. Unlike its predecessor, the DZ-42 performed any excavation 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 production, the company 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 rover and the DZ-42 bulldozer worked as transport.

Specifications

The DZ-42 bulldozer has the third traction class. At the time the base model of the car was created, this was a good indicator of power for it. The main difference from the base 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 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 axles on a beam located transversely. The stable working position of the blade is ensured by a rigid screw brace and a hydraulic brace. In a horizontal position, the blade is held due to a compensation mechanism that prevents distortion by uniformly 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 canopy that prevents soil from spilling over the upper part of the edge of the dump. Two hydraulic cylinders, mounted on brackets and driving the blade, are controlled by a hydraulic system with a gear pump and a three-section hydraulic distributor.
Main technical and overall weight indicators:

• Dimensions (length✕width✕height), mm - 4980✕2560✕2650.
• Ground clearance (clearance), mm - 380.
• Total weight, kg - 7390.
• Fuel tank volume, l - 245.
• Gearbox - mechanics.
• Chassis - on caterpillar tracks.
• Engine Model - Five different models of four-stroke, four-cylinder engine ranging from 80 to 95 hp.
• Maximum speed, km/h - 11.3.
• Diesel fuel consumption, l/h - 8.4.
• Blade dimensions (lengthXheightXlifting heightXdepth), mm - 2560✕800✕830✕410.

Engine

The DZ-42 bulldozer is equipped with five different engine models, 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 diesel fuel consumption is within 8.4 l/h, and the developed speed is 03.-11 km/h.

Chassis system

All models of the DZ-42 bulldozer have a tracked chassis. An all-metal frame and spring suspension are used. The side spars, located between the track rollers, which bear the main load, are rigidly connected to the transverse beam.

Various modifications use a trackbed with a width of 390-470 mm. At the same time, the pressure created on the ground of no more than 0.47 g/cm2 during agricultural work does not damage the fertile soil layer.

Transmission and hydraulics

The DZ-42 bulldozer is equipped with a seven-speed manual gearbox (Gearbox), located at the rear axle. A dry, permanently closed double-disc clutch is used to drive the vehicle. The DZ-42 is equipped with band brakes.

To reduce the loads created when turning the bulldozer, the rear axle is equipped with two planetary gearboxes.

The built-in hydraulic system, consisting of a hydraulic power cylinder, hydraulic pump, hydraulic distributor with hydraulic lock and hydraulic safety valve, controls the attachments. Oil is supplied to the hydraulic system through the oil tank and filter.

Cabin

The driver's cabin is made of all metal and is reinforced with a frame for safety. The cabin can be shifted relative to the base of the DZ-42, which ensures the most full review during excavation work.

The output ducts of the heater, air conditioner and air purifier, which the bulldozer is equipped with, are brought into the cabin. A sprung, 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 any malfunctions discovered during the inspection. The inspection is carried out with the engine turned off.

Operation of a bulldozer that is in a faulty condition is strictly prohibited.

Only trained and licensed drivers 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 work area. Do not leave a running machine unattended, and do not carry out adjustment or lubrication work while moving. Proceed to maintenance and the bulldozer can only be repaired after the engine is completely stopped.

During operation, the driver-driver deepens the blade into the ground by 410 mm at an angle of 55° and directs the movement of the bulldozer in the desired direction. In this case, the required layer of soil is cut off with knives and at the same time moved to the place designated for unloading. This process is called backfilling, after which the dump must be raised and then the cycle repeated again. The soil moves a distance of no more than 60 m.

Attachments

The following dumps are installed on the DZ-42:

• BNDT-10- a fixed blade with a width of 2520 mm and a weight of 829.6 kg, capable of changing position by 25° relative to the base of the bulldozer. It is mainly used for planning construction sites and clearing roads of snow.
• BNDT-20- completely identical to the BNDT-10 model, except for the width (2800 mm) and weight (874 kg).
• BPDT- a blade rotating relative to the longitudinal axis of the bulldozer with a width of 2800 mm, a weight of 1070 kg and a rotation angle of 25°.
• BUTT- a universal rotary blade with a rotation angle, width and weight similar to the BPDT, 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 bulldozer slope is allowed up to 20°. Any blade is controlled using two hydraulic cylinders, with the exception of the BUDT, which has three such devices.

Modifications

In addition to the basic model DZ-42, used in construction, public utilities and agriculture, there are three more main modifications that should be considered in more detail.

• DZ-42G- a model specially designed for agriculture, used mainly in reclamation work, as well as in mountainous areas. This bulldozer is equipped with one double-sided hydraulic cylinder.

• DZ-42T- used in marshy and difficult to pass places. This modification was even called “peat”. Due to the width of the tracks, the bulldozer has a noticeably increased supporting area, and the high ground clearance (37 cm) allows it to overcome rubble, ruts and other obstacles. The track links are equipped with lugs, which allows the DZ-42T to work on moving ground in wetlands without falling into unstable ground or peat bogs.

• DZ-42P- the model is equipped with a full-rotating blade, fixed with hinges on push bars mounted on a special transverse beam. When the blade is skewed, the beams rotate due to the hinges and the bulldozer remains in working condition. At the same time, changing the angle of inclination relative to the horizontal plane is very convenient when carrying out work on clearing 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 any significant shortcomings, which can only include a decrease in speed, compared to the DT-75 prototype, due to the blade canopy.

This is a powerful and productive technique. Even low speed does not prevent you from adapting to a changing work environment. The bulldozer is subject to constant high loads, which are supported due to its robust design. The safety margin of the DZ-42 allows its operation to continue 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 copes well with digging ditches, ditches and trenches, cutting water drainage channels, constructing embankments and filling holes. With the help of this bulldozer, areas and storage areas are planned for development, embankments and ledges on slopes are constructed, and excavated soil is moved. Additionally, the DZ-42 can be equipped with equipment for loosening hard soil.

Prices

At the beginning of 2016, the new basic DZ-42 bulldozer with a fixed blade mechanism BNDT-10 cost 1,493 thousand rubles.
A used 1993 model with the same blade, an eighty-horsepower SMD-14NG engine and 2,300 operating hours can be purchased for 450 thousand rubles.

Let's sum it up

The DZ-42 crawler bulldozer can be used in all regions of Russia and abroad, is undemanding in terms of fuel quality and is easy to maintain. With high technical and operational indicators, the cost of the DZ-42 is significantly lower than similar models in its class.

The D3-42 bulldozer is a self-propelled special equipment on crawler tracks of the earth-moving type, which was in demand back in the days of the Soviet Union. The most significant and labor-intensive process in any construction is earthmoving work, 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 capabilities, namely:

• transportation of bulk materials;
• soil planning;
• digging pits;
• clearing streets and roads of snow and dirt;
• construction of earthen embankments, etc.

Flaws

The only drawback of the D3-42 bulldozer was and remains its low speed, but its power, traction, productivity and reliable uninterrupted functionality more than compensate for this disadvantage. In addition, the advantage of the D3-42 is its maintainability, i.e., if any element fails, it is quite easy to replace it.

Modifications

Thanks to the modernization work, the same DT-75 tractors came off the assembly line, but already equipped with rotary and fixed-type blades.

Based on the type of blade, two versions of this special equipment were distinguished:

1. D3-42P is a unit with a full-rotary type blade, which has the ability to change the tilt of the blade mechanism. Its distinctive characteristics were the presence of a hydraulic transfer function and, in fact, a rotating mechanism. Improved maneuverability indicators made it possible to significantly increase productivity in carrying out work manipulations.
2. D3-42 - had a fixed blade mechanism.
3. D3-42T is a special model capable of carrying out excavation work 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 traction class 3, and the main difference between the D3-42 and the basic version DT-75 is the use of a reverse gearbox and a blade mechanism. This makes it possible to operate it in difficult climatic conditions and on difficult soils belonging to categories 1 - 2.

The turbocharged diesel engine is equipped with a liquid-based cooling system, which allows the bulldozer operator to operate the equipment for a long time without interruption for cooling breaks.

In addition to the D3-42, D3-42P and D3-42T models, another modification was created, namely, the D3-42G bulldozer, designed to provide reclamation services in agriculture, for operation in mountainous areas and other locations where the soil is moderately heavy. .

This model of special earthmoving equipment has a powerful (up to 90 l/s) power plant and larger dimensions. And a double-acting hydraulic cylinder allows the blade to enter the ground 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:

Device

The multifunctional unit D3-42 is widely used due to its well-designed design and layout, namely:

• The engine runs on diesel fuel, is started by an electric starter and has 5 models, 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.
• All models of this special equipment have a tracked undercarriage system. A solid metal frame and spring-type suspension are used. In the space between the caterpillar tracks there are side spars, firmly connected to the transverse beam, which helps to withstand heavy loads and not damage the top layer of soil, which is especially important during agricultural manipulations.
• The size of the track depends on the model and can vary from 390 to 470 mm.
• The hydraulic system consists of a pump, a distributor with a hydraulic lock, a hydraulic power cylinder and a safety valve that controls the hinged mechanism. The hydraulics receive oil through an oil tank and filter.
• The manual transmission is seven-speed. Installed near the rear axle. To start movement, a dry clutch is used - a closed double-disc part.
• This unit is braked by band brakes.

The modern cabin was designed taking into account past mistakes, which increased the productivity of the bulldozer operator, namely:

1. good review gives the driver the opportunity to monitor all work areas;
2. reinforced with a frame for safety;
3. comfortable double seat with the ability to adjust to specific driver parameters;
4. availability of heating, air conditioning and air purification systems.

Separately, I would like to pay attention to attachments, which have 4 types:

1. BNDT-10 is a non-rotating version, weighing almost 830 kg, a rotation angle of 25 degrees and a width of 2 m 52 cm. It is used for snow removal work and on construction sites.
2. BNDT-20 is an analogue of the first option, but with a width of 2 m 80 cm and a weight of 874 kg.
3. BPDT is a rotary version with a rotation angle of 25 degrees relative to the axis of the unit, weighing 1t 70 kg and width 2 m 80 cm.
4. BE - specifications like the BPDT, but has a skew of 8 degrees along the transverse plane, which makes this type a universal rotary mechanism.

When moving forward, the blade deepens into the ground, which facilitates soil cutting. The resulting soil prism is moved by a drag in front of the bulldozer to the unloading site. Then the blade mechanism rises and in this position the equipment returns to the point of soil accumulation.

The D3-42 bulldozer gains the maximum volume of the drag prism on a piece of soil 6 to 8 m long. 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/rub. “Tired” devices are offered from 145 thousand/rub to 250 thousand/rub.

Bulldozers can serve as an analogue:

• B10M.0101-E (TG-170M.01-1E) - from 3 to 3.5 million/rub.
• Shantui - 5 to 4 million/rub.

So the described model is the best option in terms of price/quality ratio.

The DZ-42 bulldozer is presented in the form of a self-propelled earthmoving vehicle. The model is distinguished by the presence of tracked traction, which significantly increases the cross-country potential. The bulldozer was launched into mass production Volgograd Tractor Plant.

The DZ-42 model is used when moving bulk material, as well as during soil leveling. DZ-42 is necessary when constructing earthen embankments and removing the top layer of soil.

The DZ-42 is built on the platform of the DT 75 model. As a result of painstaking work, the designers have somewhat improved its performance characteristics. The basic variation of the model is equipped with different versions of dump devices. In addition, DZ 42 can be equipped with a universal rotary blade. Its peculiarity lies in the presence of a hydraulic transfer function or the installation of a rotary type mechanism.

The most problematic aspect of the DZ 42 model can be called the minimum speed of movement. However, this disadvantage is more than compensated for 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 certain part, it is enough to simply replace this element.

Purpose

Installing additional equipment allows you to dig trenches and pits, as well as clear roads from dirt and snow. 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;
• construction of embankments;
• planning of the building site;
• filling pits.

Installing additional equipment allows you to separate frozen or heavily compacted soil, and then loosen it.

Photo of bulldozer DZ-42

There are three main types of blade that are installed on the DZ 42:

1. Fixed blade BNDT-10. Used in industry and road construction. The presence of such equipment allows you to level earth embankments and bulk materials. To work on soft ground, it is most advisable to use another variation of a fixed blade - BNDT-20. This equipment is large in size, so it is more practical to use.
2. 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 relative to the longitudinal axis up to 25 degrees. This type of blade is most effective when clearing snow from a road or when filling a trench.
3. Universal rotary 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 types 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 that the transverse beam is rigidly attached to the side member brackets. The latter are located between the rollers, which provide the main emphasis 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 well-organized design. The driver's cabin offers a good overview, which allows you to control all work areas.

The diesel power unit is additionally equipped with a pre-heater. Thanks to the presence of this element, the bulldozer engine can start even at minimum temperatures.

Diagram of bulldozer DZ-42


1 - knife; 2 - blade; 3 — visor; 4 — bracket; 5 — hydraulic cylinder for raising and lowering the blade; 6 — base tractor; 7- hydraulic distributor control lever; 8 — harness joint; 9 - push bar.

The driver's cabin is made of solid metal of increased strength. It is very reliably sealed and is also equipped with a ventilation system and a heater. This allows you to work on site in any weather conditions.

The position of the seat can be easily changed depending on the anthropometric data of the driver. Thanks to this, the level of fatigue during long-term work is significantly reduced. If necessary, you can slightly shift the driver's cabin from the main axis of the bulldozer. This allows for a slightly improved overview and clear control over all the details of the workflow.

Specifications

The turbocharged diesel 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 remains at 95 hp.

Technical characteristics of the model in the table:

The engine starts by pressing the electric starter. It works with a friction clutch and a seven-speed manual gearbox. The standard tank capacity remains at 245 liters.

The basic working part of the bulldozer is a non-rotating blade, which is secured to a transverse beam by two push 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 model modification.

DZ-42g

DZ-42 g is intended for performing reclamation and construction work on medium-heavy soils. The main equipment used here is a rotary type bulldozer blade. As a result, the operational potential of the model increases slightly.

Bulldozer DZ-42G

This variation of the bulldozer is equipped with a power plant whose rated power does not exceed 90 hp. In this case, the overall dimensions of the model will be slightly larger. A double-acting hydraulic cylinder is used to raise and lower the blade. It can go deeper by 30 cm, and its maximum lifting height is 63 cm.

The main differences from the basic modification are noted in the table:

The video shows the DZ-42 bulldozer in action:

There are several modifications of the DZ bulldozer on the market: 42, 170, 171, etc. Each model has different technical characteristics and performance. This vehicle is used to perform work on industrial and construction sites, in quarries and in agriculture.

Overview of common models

This transport is used during loading and unloading operations and ground leveling. The DZ bulldozer is also used to develop soils of the first and second categories.

DZ-8

The DZ-8 modification is equipped with a diesel power unit, which is made in accordance with the international environmental standard Euro-2. The equipment is equipped with a manual transmission and hydraulic power steering.

Technical indicators:

Transport DZ-27 is an earth-moving equipment equipped with a non-rotating blade. This modification is intended for cutting and moving soil of the first, second and third categories.

DZ-28

The DZ-28 equipment is suitable both for excavation work and for transporting various cargoes. Bulldozer is different high level maneuverability and resistance to harsh weather conditions.

Characteristics and indicators of this model:

DZ-42

Construction equipment DZ-42G is used for digging trenches and pits, as well as for transporting various bulk cargoes, clearing roads of snow and for other public works.

Technical data and model indicators:

DZ-109

The DZ-109 model belongs to the light class of bulldozers. It is made on the basis of the T-130 tractor equipment and is equipped with a powerful diesel engine and an eight-speed gearbox.

Technical parameters and characteristics:

DZ-110

This model is used in the construction of various objects as an auxiliary equipment, also during the removal of earth layers, cutting terraces, during planning and transportation of soil.

Bulldozer DZ-110A - technical characteristics of the equipment:

This bulldozer is used when cutting terraces on slopes, moving various materials and cargo at construction sites during the construction of embankments. This technique is suitable for performing utility work.

Technical parameters of the bulldozer DZ-162:

This bulldozer is equipped with a separate-aggregate hydraulic system, for mounting which a hinged front frame is provided in the vehicle design. To create pressure in the system, a pumping mechanism is used here.

Technical parameters and characteristics:

This vehicle belongs to traction class No. 10 and is designed to perform work on heavy soil. Among the advantages are low fuel consumption and high performance.

Description of the parameters of the bulldozer DZ-171-1, technical characteristics:

Other modifications

The DZ-18 modification belongs to the tenth traction class and is used for leveling soil, cleaning roads in winter and for transporting bulk cargo.

Technical specifications:

The DZ-29 transport is equipped with a four-stroke diesel engine and a hydraulic system with an eight-speed gearbox.

Technical data and model parameters:

Modification DZ-53 is an earth-moving transport equipment based on a caterpillar tractor and a wheeled tractor. It consists of a blade, a caterpillar track and a driver's cabin.

Characteristics and data:

Transport DZ-101 belongs to the fourth traction class. It is equipped with a blade with a volume of 1.7 m³. The engine power is 56 horsepower, and the fuel tank capacity is 150 liters.

The DZ-42 bulldozer is presented in the form of a self-propelled earth-moving vehicle. The model is distinguished by the presence of tracked traction, which significantly increases the cross-country potential. The bulldozer was put into mass production by the Volgograd Tractor Plant.

The DZ-42 model is used when moving bulk material, as well as during soil leveling. DZ-42 is necessary when constructing earthen embankments and removing the top layer of soil.

The DZ-42 is built on the platform of the DT 75 model. As a result of painstaking work, the designers have somewhat improved its performance characteristics.

The basic variation of the model is equipped with different versions of dump devices. In addition, DZ 42 can be equipped with a universal rotary blade.

Its peculiarity lies in the presence of a hydraulic transfer function or the installation of a rotary type mechanism.

The most problematic aspect of the DZ 42 model can be called the minimum speed of movement. However, this disadvantage is more than compensated for by high performance.

Uninterrupted operation over a long period of time, as well as maximum reliability during operation, are very important qualities for equipment of this type. The advantages of this model also include high maintainability.

In the event of a breakdown of a certain part, it is enough to simply replace this element.

Purpose

Installing additional equipment allows you to dig trenches and pits, as well as clear roads from dirt and snow. 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;
• construction of embankments;
• planning of the building site;
• filling pits.

Installing additional equipment allows you to separate frozen or heavily compacted soil, and then loosen it.

Photo of bulldozer DZ-42

There are three main types of blade that are installed on the DZ 42:

1. Fixed blade BNDT-10. Used in industry and road construction. The presence of such equipment allows you to level earth embankments and bulk materials. To work on soft ground, it is most advisable to use another variation of a fixed blade - BNDT-20. This equipment is large in size, so it is more practical to use.
2. 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 relative to the longitudinal axis up to 25 degrees. This type of blade is most effective when clearing snow from a road or when filling a trench.
3. Universal rotary 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 types 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 that the transverse beam is rigidly attached to the side member brackets. The latter are located between the rollers, which provide the main emphasis 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 well-organized design. The driver's cabin offers a good overview, which allows you to control all work areas.

The diesel power unit is additionally equipped with a pre-heater. Thanks to the presence of this element, the bulldozer engine can start even at minimum temperatures.

Diagram of bulldozer DZ-42

1 - knife; 2 - dump; 3 - visor; 4 - bracket; 5 - hydraulic cylinder for raising and lowering the blade; 6 - base tractor; 7- hydraulic distributor control lever; 8 - harness joint; 9 - push bar.

The driver's cabin is made of solid metal of increased strength. It is very reliably sealed and is also equipped with a ventilation system and a heater. This allows you to work on site in any weather conditions.

The position of the seat can be easily changed depending on the anthropometric data of the driver. Thanks to this, the level of fatigue during long-term work is significantly reduced. If necessary, you can slightly shift the driver's cabin from the main axis of the bulldozer. This allows for a slightly improved overview and clear control over all the details of the workflow.

Specifications

The turbocharged diesel 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 remains at 95 hp.

Technical characteristics of the model in the table:

The engine starts by pressing the electric starter. It works with a friction clutch and a seven-speed manual gearbox. The standard tank capacity remains at 245 liters.

The basic working part of the bulldozer is a non-rotating blade, which is secured to a transverse beam by two push 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 model modification.

DZ-42 g is intended for performing reclamation and construction work on soils of medium severity. The main equipment used here is a rotary type bulldozer blade. As a result, the operational potential of the model increases slightly.

Bulldozer DZ-42G

This variation of the bulldozer is equipped with a power plant whose rated power does not exceed 90 hp. In this case, the overall dimensions of the model will be slightly larger. A double-acting hydraulic cylinder is used to raise and lower the blade. It can go deeper by 30 cm, and its maximum lifting height is 63 cm.

The main differences from the basic modification are noted in the table:

The video shows the DZ-42 bulldozer in action:

Source: http://allspectech.com/stroitelnaya/buldozery/na-gusenichnom-hodu/dz-42.html

Bulldozer DZ 42 based on DT 75

The DZ 42 bulldozer is a self-propelled earth-moving and transport vehicle operating on caterpillar tracks. During 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, was used as the basis for creating the bulldozer.

In comparison with the prototype, the DZ 42 significantly lost 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 sufficient 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 silage, arranging storage facilities, removing manure);
• digging pits, pits, trenches;
• planning of building plots;
• performing work in public utilities(cleaning roads from snow and dirt);
• loosening the soil.

Modifications and features

The DZ 42 bulldozer was produced in several modifications, differing in the type of blade used and design:

1. basic version DZ 42 with a fixed blade mechanism;
2. DZ 42P with a full-rotating blade mechanism. The device is mounted using universal joints on the bars. The rear part of the push bar is connected to a special beam using harness joints. The hinges keep the machine operational when misalignment occurs, 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 straight rotary blade and with a universal rotary blade with a hydraulic tilt function;
3. DZ 42T with an increased support area, wide tracks and high ground clearance. The peat modification confidently overcomes forest debris, deep ruts and other obstacles. Each DZ 42T track includes 42 links with special lugs that improve cross-country ability and prevent it from falling into unstable soil;
4. DZ 42G and DZ 42G-1 with a 2-way acting hydraulic cylinder. Modifications are used to perform work in mountainous areas, reclamation operations in agriculture in areas with medium-heavy soil.

Advantages of the DZ 42 model:

• high performance;
• maximum reliability;
• long-term operation without refueling;
• versatility;
• maintainability.

The main disadvantage of the model is the low speed of movement and obsolescence of the design.

Versatility, accessibility and sufficient reliability allow the 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 mass of the equipment is 7390 kg, the specific pressure on the ground is 0.47 kg/sq.cm.

The bulldozer could move in a speed range from 0.33 to 11.1 km/h, which made it possible to adapt to different conditions operation. The traction force was 36.5 kN.

The main working element of the DZ 42 in the standard version was a fixed blade, which was used to move soil over 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.

Design and operating features

The DZ 42 model is built on the basis of the DT 75 tractor. For most elements, these machines are unified. The bulldozer uses an all-metal frame, rigidly fixed to the side member brackets, which allows it to withstand heavy loads.

All modifications of the DZ 42 are equipped with a tracked 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. A dry 2-disc permanently closed clutch is used to initiate movement.

The main element of the braking system is band brakes. To reduce the loads created when cornering, the rear axle is equipped with 2 planetary gearboxes.

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 linkage mechanism. Oil enters the hydraulic system through a filter and an oil tank.

The driver's cabin of the bulldozer is made of solid metal and has increased strength. The interior is reliably sealed, which prevents the entry of dust particles.

A heater and ventilation system are also installed inside, which allow you to operate the equipment regardless of weather conditions. Additional cab reinforcement in the form of a safety cage protects the operator even if the machine overturns.

The cabin, if necessary, moves relative to the base of the bulldozer, providing excellent visibility during excavation work.

The operator is provided with a 2-seater sprung seat, the position of which can be changed taking into account anthropometric data. The ergonomic arrangement of the organs and the thoughtful layout of the interior 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 push bars. A stable position of the organ is achieved through a hydraulic brace and a screw brace.

The compensation mechanism keeps the blade in a horizontal position, preventing distortion. At the bottom there are replaceable cutting knives with 2 blades. In the central area there is a special visor that prevents soil from spilling out through the top of the dump.

The equipment is driven by 2 hydraulic cylinders mounted on brackets.

The following types of blades are used for the bulldozer:

• basic fixed blade BNDT-10;
• fixed blade BNDT-20 of increased size;
• rotary blade BPDT-10 with great functionality;
• universal rotary blade BUDT with built-in hydraulic drive.

Engine

DZ 42 is equipped with 4-stroke diesel engines of several types with liquid cooling and direct fuel injection. Power plants differ in individual design elements and power:

1. D 440-22 – a unified engine with a vertical in-line cylinder arrangement. Motor Features:

• anti-smoke corrector;
• cast iron crankcase with increased rigidity design;
• full-flow cleaning scheme;
• multi-section fuel pump equipped with an emergency stop valve;
• full-support crankshaft with thin-walled bearing shells and hardened journals;
• 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 outdated caterpillar tractor DT-75. Unlike its prototype, the DZ-42 could be used to perform any excavation 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 its inception 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 the car was created, 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 make the most of all the capabilities of the machine.

Compared to the prototype, the DZ-42 noticeably lost in transport speed, but gained the opportunity to work with soils that belong to the first and second categories of complexity.

The equipment is used in the housing and communal services sector (digging pits and trenches intended for utilities), construction and agriculture. Among the most popular modifications, we can highlight the DZ-42 G and DZ-42 T. The first machine was developed specifically for reclamation work, the second - for operation in wetlands and difficult soils.

Bulldozer blades, which are equipped with equipment, can be presented in two types: rotating and non-rotating. Each of them is designed to perform a specific type of work. The configuration of equipment with a blade is carried out at the request of the customer.

Considering the capabilities of the DZ-42, it makes sense to get to know it better.

Specifications

Engine. Several types of engines can be installed on the DZ-42. All power units are diesel, four-stroke. The only difference is in the power of the motors. Here is a list of proposed models:

• D 440-22 with a power of 95 hp.
• SMD-18N is a Ukrainian analogue of the previous model.
• RM-80 is capable of producing up to 80 “horses”.
• D 245.5S2 – 95 horsepower.
• A-41 – 90 hp

The average fuel consumption is about 8.4 liters per hour of working time. 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 using an electric starter. All engines have a liquid cooling system.

Chassis. All modifications of the bulldozer were tracked. The designers used an all-metal frame and a spring suspension system. In this case, the transverse beam was rigidly connected to the side spars. The spars were located between the track rollers. By the way, the rollers bore the main load.

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 very important point when performing agricultural work. The bulldozer does not damage the fertile soil layer.

Transmission and hydraulics. A mechanical transmission circuit is installed on the bulldozer. It is represented by a seven-speed gearbox, which is located next to the rear axle. The clutch is a double-disc, dry, permanently closed type. The bulldozer has band brakes.

To reduce the effort when turning the car, the designers equipped the rear axle with two single-stage planetary-type gearboxes.

The built-in hydraulic system is responsible for the operation of the attachments.

Workplace. The operator's cabin is made in an all-metal version and is complemented by a safety cage. It is worth noting that it is possible to move the cabin relative to the bulldozer frame. This provides best review when performing work. For operation in various climatic conditions, a heater and ventilation system are installed.

Attachments. Three types of blades can be installed on equipment:

1. BNDT-10. This is a non-rotating mechanism that is used to level earthen embankments and inert materials (sand, crushed stone).
2. 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 clear streets of snow.
3. BE. Universal blade with the ability to rotate the mechanism. Can be used to perform any work.

General technical specifications

Advantages and disadvantages

The DZ-42 crawler bulldozer 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.

Disadvantages include a low level of comfort in the cabin and low transport speed. During operation, oil leaks were noticed in the hydraulic system.

TELL YOUR FRIENDS