The design of the DZ-143 motor grader is distinguished by the presence of a block-type brake system equipped with a hydraulic drive. This technique is used to create embankments and shafts, for profiling slopes, leveling the subgrade, forming a cross-section of ditches, removing old asphalt, etc.
Engine
The equipment of the DZ-99 differed depending on the modification. In particular, two engine options were available - AM-41G or D60K-S1. Diesel power units differed in power: the first was capable of developing 90 hp, the second - only 60 “horses”.
AM-41 is a four-stroke diesel engine, which was started using a PD-10U gasoline engine. The cooling system is liquid.
Photo source: techstory.ru The power of the DZ-99 engine was 60-90 hp.
Motor grader DZ-99: modifications
The DZ-99 motor grader was produced in several modifications:
- DZ-99-1-1 with minor design modifications;
- DZ-99-1-2 with minor modifications;
- DZ-99-1-4 with minor modifications;
- DZ-99A - modified version;
- DZ-99A-1-1;
- DZ-99A-1-2;
- DZ-99A-1-4;
- DZ-99-2-2;
- DZ-99-2-4.
The equipment was unified in terms of key indicators. Had the same power units and performance characteristics.
Specifications
The rear wheels of the grader were driven (in addition, they could tilt in both directions), the front wheels were steered. The main frame structure was welded. The front frame was made of a box-section beam and was connected to the main frame by a hinge in the middle part. This ensured that the front axle swung relative to the main frame of the machine. The hydraulic cylinder was responsible for tilting the wheels.
Clutch type: dry double-disc. The clutch was released mechanically using a pedal, which was installed in the driver's cab. There was a mechanical three-shaft gearbox model U35606-2. Two gear ranges were available (work and transport), each with three forward and one reverse gears. Gear shifting was done using a lever. Cardan transmission is open type.
Photo source: techstory.ru Photo DZ-99
A few words about the braking system. The design of the motor grader included shoe-type wheel (foot) brakes and a band-type parking (hand) brake. The two rear wheels were equipped with hydraulic drive. The wheel brakes were actuated by a master cylinder, which was controlled from the cab via the brake pedal.
Now let's talk about the electrical system. The rated voltage was 12V, the source of electricity (direct current) was a generator (with a relay generator) and a battery. Most electrical appliances were connected using a single-wire circuit. The exceptions were the sound signal, the gearbox oil pressure indicator and the warning lamp.
| Engine model | AM-41G/D60K-S1 |
| Power | 90 / 60 hp |
| Weight | 9.5 tons |
| Electrical system voltage | 12V |
Popular models
Popular models include:
- 99;
- 143;
- 168.
Motor grader D-143: technical characteristics differ depending on the selected modification.
DZ-99
The DZ-99 grader belongs to the class of light construction equipment. This vehicle is designed to perform road construction work on industrial sites and urban areas.
This model is equipped with a diesel six-cylinder four-stroke power unit, where all cylindrical mechanisms are located in one row. The AM-41G engine is manufactured in accordance with the international environmental standard Euro-1. The cooling system is liquid type. Two 6ST-42 batteries are installed here.
Among the design features of the DZ-99 motor grader, one can highlight the presence of a second pre-start motor that runs on gasoline. This is a two-stroke unit PD-10M with a power of 66 hp. With.
This construction equipment also includes a three-speed transmission, equipped with two drive axles and a reverse gear. The turning mechanism is controlled by a mechanical system equipped with a hydraulic power steering.
The hydraulic system operates using a pump element in which the pressure of the working fluid does not exceed 10 MPa. The front wheel mechanisms have an inclination angle of 15° in both directions.
Description and technical characteristics of the motor grader DZ-99:
| Fuel tank volume | 190 l |
| Hydraulic system volume | 63 l |
| Manual transmission capacity | 15 l |
| Side balancers | 40 l each |
| Engine lubrication system volume | 25 l |
| Cooling system volume | 35 l |
| Dimensions | Length - 8650 mm Width - 2300 mm Height - 2985 mm |
| Smallest blade recess | 200 mm |
| Blade height | 500 mm |
| Maximum blade angle | 90° |
| Ground cutting angle | 70° |
| Moving the blade to the side | 700 mm |
| Ground clearance distance | 400 mm |
| Full mass | 9500 kg |
| Track | Front wheels - 1850 mm Rear wheels - 1850 mm |
| Wheelbase | 5200 mm |
| Minimum outer turning radius | 13000 mm |
| Wheel size | 12.00-20 |
| Pressure exerted on the ground during work | 300 kPa |
| Highest transport speed | 38.1 km/h |
| Number of cylinders | 6 |
| Number of cycles | 4 |
| Engine power | 90 l. With. |
| Electrical system voltage | 12 V |
| Operating temperature | -35…+35°С |
| Wheel formula | 1*2*3 |
| Maximum engine speed | 2100 rpm |
| Maximum torque | 480 Nm |
| Engine displacement | 5.7 l |
| Cylinder diameter | 106 mm |
| Piston stroke | 104 mm |
DZ-143
Motor grader DZ-143-1 can be used during:
- construction of embankments at industrial sites;
- formation of shafts from soil;
- slope profiling;
- roadbed layout during construction;
- formation of the cuvette cross-section;
- cleaning drainage ditches;
- scraping of old road surfaces;
- removal of construction waste;
- mixing different types of soil;
- clearing areas of snow in winter.
The DZ-143 grader is equipped with a six-cylinder four-stroke engine running on diesel fuel. The power unit meets all the requirements of the international environmental standard Euro-3.
A six-speed hydraulic transmission with a block brake system is installed here.
The driver's cabin is equipped with a heating mechanism for comfortable work in winter and air conditioning for work in summer. A wide viewing angle is provided by a large number of glasses. The dashboard contains all the sensors that display the status of the main components and transport systems.
The chassis is mounted on a box-section supporting frame. A grader blade is installed on the front of the vehicle, and a leveling knife is installed in the middle of the structure.
Technical indicators and characteristics of the model:
| Total weight | 12500 kg |
| Highest movement speed | 43 km/h |
| Minimum transport speed | 4 km/h |
| Outer overall turning radius | 12500 mm |
| Dimensions of the grader blade | Length - 3740 mm Width - 620 mm |
| Side stem | 800 mm |
| Deepening | 250 mm |
| Operating temperature | -40…+40°С |
| Tire size | 20 inches |
| Transport dimensions | 8950*2500*3510 mm |
| Average fuel consumption | 12.2 l/h |
| Power unit power | 130 l. With. |
| Engine displacement | 11.15 l |
| Number of cylindrical parts | 6 |
| Number of bars | 4 |
| Rated crankshaft speed | 1700 rpm |
| Number of speed modes | Forward - 6 Backward - 2 |
| Maximum torque | 520 Nm |
| Pressure exerted on the front axle | 8500 kg |
| Rear drive axle load | 4000 kg |
| Ground clearance | 380 mm |
| Cylinder diameter | 102 mm |
| Piston stroke | 104 mm |
| Wheel inclination angle | 20° |
| Wheel formula | 1*2*3 |
| Main frame tilt angle | 30° |
| Gear ratio | 0,62 |
| Electrical system rated voltage | 12 V |
| Track width | 2000 mm |
| Hydraulic system | 65 l |
| Lubrication system | 27 l |
DZ-168
The hydraulic grader DZ-168 is a technique that is designed for construction work, for repair and maintenance of dirt roads, and for grading rice paddies.
The design of this vehicle includes a tractor and a semi-trailer, which are connected to each other using a pin. Raising and lowering of a grader-type blade occurs due to the operation of special levers. All control is carried out from the driver’s cabin, which contains devices responsible for rotating the blade, changing the angle of the soil cut, and extending the working element.
The following attachments can be used: balancers, additional wheel mechanisms, ripper - pickaxe, snow blower.
This model has a number of advantages:
- high level of unit mobility;
- reliability of design;
- low fuel consumption;
- low cost;
- wide range of uses;
- the ability to control the working element directly from the driver’s cab.
Technical data and modification indicators:
| Fuel tank volume | 120 l |
| Hydraulic system volume | 40 l |
| Manual transmission capacity | 10 l |
| Engine lubrication system volume | 13 l |
| Dimensions | Length - 7200 mm Width - 2500 mm Height - 2949 mm |
| Smallest blade recess | 300 mm |
| Blade height | 500 mm |
| Maximum blade angle | 90° |
| Ground cutting angle | 70° |
| Moving the blade to the side | 800 mm |
| Ground clearance distance | 350 mm |
| Full mass | 4000 kg |
| Track | On the front wheels - 2000 mm On the rear wheels - 2000 mm |
| Wheelbase | 4750 mm |
| Minimum outer turning radius | 12700 mm |
| Wheel size | 12.00-20 |
| Pressure exerted on the ground during work | 150 kPa |
| Highest transport speed | 20 km/h |
| Number of cylinders | 6 |
| Number of cycles | 4 |
| Engine power | 60 l. With. |
| Electrical system voltage | 12 V |
| Operating temperature | -35…+35°С |
| Maximum engine speed | 1750 rpm |
| Maximum torque | 100 kN |
Cabin, working control
The DZ-99 was equipped with a closed two-seater cabin. For operator comfort, it was equipped with an adjustable seat, ventilation and heating systems. Control and measuring instruments were also available here.
The hydraulic system was used to control the working equipment, power steering, and also tilt the front steered wheels. Its design used hydraulic pumps of the NSh-10D and NSh-46D models and hydraulic distributors R75-PZ-PG14A and R75-PZ-PG2-B. The hydraulic system diagram is a separate unit with open circuits. Each circuit had its own hydraulic pump.
Design of motor grader DZ-122
The wide range of operations for which a motor grader is used is determined by its design. Thus, it is used for cleaning snow, ice and loosened soil on construction sites and public areas under the control of public utilities. These operations are possible thanks to the presence of a full-rotating blade.
Additional functions, namely use as a bulldozer, are possible by connecting a working trolley with a knife to the DZ-122 motor grader, turning the device into a full-fledged bulldozer. Modifications of the device are formed by connecting knives of various types, which include rotary and partially rotary models.
Also, a pick-ripper is additionally attached to the frame, which is made on the basis of two axes. It is installed at the rear and allows you to loosen and open road surfaces, including asphalt, which makes the motor grader indispensable in road construction and road repair work.
The original model of the device, launched into production in the 80s, is currently not produced, but due to increased demand, modified versions are being produced, including the DZ-122A motor grader.
Motor grader DZ-122 at work
The main frame is made of high-strength steel. The working body - the grader blade - includes the following elements: traction frame, blade gearbox, turntable and, in fact, the blade and knife. The cabin is protected from tipping over and has a number of additional advantages that ensure comfortable work.
New models are adapted for use in modern conditions and can be equipped with foreign-made spare parts, for example, monoblock hydraulic valves or an automatic leveling system that allows you to adjust work in two or three planes to choose from.
