Motor grader DZ-98: technical characteristics, device, dimensions, operating characteristics

The heavy motor grader DZ-98, whose technical characteristics are given below, is used for road construction and quarrying. Its functionality allows you to move large volumes of embankments and ground, as well as to make the alignment of the roadway.

The machine is equipped with a front blade with a swivel mechanism, which makes it possible to process a large area in the minimum time interval. The diesel engine power plant YaMZ leads to work, which has a power of 173 kW. The set includes a variety of attachments, including pick and loosening systems. On the dump, it is possible to additionally mount a wing, used to clear snowdrifts. And with the lateral analog it can be done even behind fences.

general description

Motor grader DZ-98 is equipped with a special working tool in the form of a blade with a knife, which is mounted on the frame of the technique. It is powered by a diesel engine, performs lifting, lowering, turning to the sides and vertically. High productivity provides good maneuverability of the machine and the ability to set the blade angle in several positions.

Comfortable working conditions of the operator are guaranteed by balancers, reliable, informative frame, automatic control system of the blade position, as well as basic and additional sensors. The conveyor set includes a side blade, a bulldozer analog, a rear ripper and additional equipment (if necessary).

Transmission unit

The DZ-98 unit, the technical characteristics of which correspond to the majority of analogues in its category, is equipped with a transmission system of torque from the motor to the wheels with the help of a transmission, which makes it possible to correct the direction and significance of this aspect. In addition, you can disconnect the power unit from the driving bridge. The unit also serves to take the power of the hydraulic pump drive.

The node consists of the following elements:

• Clutch unit.
• Reducer drive hydraulic pumps.
• Transfer box.
• Parking brake.
• Dispenser.
• Cardan drive drive rear, front, middle bridge.

All components are included in a single unit, which represents the transmission. It interacts with the pump case of the hydraulic pumps and the flywheel of the motor by means of a centering belt. The torque transmission is carried out through a special resilient coupling and a dozen rubber fingers. Also, various fixing parts are provided in the form of fingers, stoppers and bolts.

Middle and rear axle

Special construction machine DZ-98, whose technical characteristics will continue to be considered further, has an interchangeable middle and rear axle. Each of the nodes is a beam made of steel with a main transmission bracket and bevel gears with circular teeth. The onboard gearboxes are fixed on the flanges, the unloaded axle shafts connect the main gear with an additional hook.

The small main gear of each lateral gearbox aggregates with the semiaxes by means of a flange and a main bush. In each element a disc brake with pneumatics is mounted. These parts are in the oil bath. The bridges themselves are mounted on a pair of balancers with the help of ball and cylindrical type fingers. This design simplifies the installation and maintenance of bridges.

Front axle

The motor grader DZ-98 is equipped with a controlled front axle. Its main part is almost identical to the rear and middle element. The unit differs by turning parts of the wheels and fixing to the frame. The beam of this design is cast with welded ends at the ends. In the middle of the part there are two fingers located along the longitudinal axis. On them, the bridge can be rotated relative to the base in the transverse plane.

The block includes fully unloaded axle shafts, at the ends of which the forks of the joint universal joint are fixed . With its help, the torque is transformed to the bevel gear. It changes the position of the working part in the horizontal direction. The remaining side reducers differ from the elements of the rear and middle bridge in that they do not have wheel brakes, and also the possibility of turning the beam relative to the bridge horizontally. They are connected together by means of a transverse steering rod. Through it, also convergence of the front wheels.

Knife blade DZ-98 and basic equipment

Increases the scope of use of this machine a lot of options for installing additional equipment. It includes:

• Scavenger.
• Bulldozer accessories.
• Ripping and laying equipment.
• Snowplows.

All the tools are placed on the main frame, it allows for laying, repairing roads, as well as laying out the ground, clearing snow, digging pits, cutting bushes. An important role is played by the domestic machine when laying airfield strips and railway wagons.

The track laying device consists of a central blade and two wings on hinged joints. Elements can be moved to the right or left position, thanks to a pair of hydraulic cylinders. In addition, the retractable stem facilitates the rotation of the part around the vertical axis. The suspension of the equipment is identical to a similar ripping and bulldozer plant.

Other equipment

The manufacturer DZ-98 envisaged the possibility of equipping the grader with various functions. The ripper is equipped with a working blade and a suspension. In general, it is a cast beam, on which there are five teeth inserted into special nests. Fixation of elements is made with the help of fingers and checks.

The snowplow is designed for cleaning roads, runways and other areas from snowdrifts and snowdrifts. The process is carried out by shifting the interference aside or by throwing. At the maximum speed of movement, snow can recline to a distance of up to 15 meters, which allows you to clear wide sections of roads with minimal time.

The bulldozer is aimed at moving soil, loose materials, as well as producing trenches, pits and other auxiliary works. Heavy and frozen soils are developed with preliminary loosening. The equipment itself includes a blade and a suspension consisting of a pushing frame, a hydraulic cylinder, a pull rod and a lowering mechanism.

The spare parts for the DZ-98 include a picker. It is designed for the development of soils of the 4th category, dismantling of worn road pavement, opening of the upper layer of permafrost. The device consists of a molded frame part with inserted teeth, placed in special sockets. The equipment is connected by means of links to the head of the main frame of the grader. Auxiliary elements are the hydraulic cylinder and the lifting and lowering eyes of the equipment.

Grader DZ-98: specifications

Below are the main parameters of the technique in question:

• Length / width / height - 6 / 3,2 / 4 meters.
• The track of the front wheels (narrow / wide) is 2.62 / 2.69 m.
• A similar figure for the rear wheels is 2.5 / 2.57 m.
• The maximum clearance is 615 mm.
• The operating weight of the machine is 19.5 tons.
• The static load on the ground is 10500/4630 kgf.
• The number of gears (forward / backward) is 6/6.
• The speed limit (maximum) - up to 47 km / h.
• The minimum turning radius is 18 meters.
• Stability on the gradient is 15 degrees.
• Braking distance at a speed of 30 km / h - 14 m, a similar figure in case of failure of one circuit - 41 m.
• The engine type is the diesel engine YMZ or "Kummins" with a rated power up to 275 horsepower with a turnover of 1700 rotations per minute. Start - the starter type.

Other options

Below are the other characteristics of the motor grader:

• Transmission DZ-98 with all-wheel drive, mechanical with a disconnecting front axle.
• Hydraulic pumps - with single-row drive and elastic coupling.
• The clutch type is a dry closed block with a braking driven shaft.
• Reduction gear - single-row with parking brake for medium and rear drive.
• Intermediate transmission - cardan type.
• Tape parking brake.
• The wheel formula is 1/3/3.
• The driving axle is a steerable front axle.
• Onboard reducers - cylindrical with one range, have an internal hook.
• Completely unloaded axle shafts.
• Wheel brakes - multi-disk with metal-ceramic elements, are placed in an oil bath.
• Front and rear suspension - balancer with jet rods, provides pumping bridges along the vertical.
• The middle suspension is responsible for pumping the drives in the transverse plane, equipped with hinges.
• Light and sound alarm.

Equipment Characteristics

Device DZ-98 involves the use of several devices, namely:

1. Tracking system. It has a grip of up to 3.4 meters, the height of the blade is 0.95 m. The angles of the wing installation are 48 and 24 degrees. The blade is lowered below the support pad by 20 centimeters.
2. Bulldozer equipment. Capture the prism when dragging - 2.5 cu. M. The height of the blade is 0.97 m. The main cutting angle is 55 degrees, the lowering of the working surface is not less than 11 centimeters.
3. Loosening device. Equipped with five prongs, penetration and grip width is 0.23 and 1.8 meters, respectively.
4. Grader dump. This equipment consists of a spare part DZ-98, having a length of 4.2 meters and a height of the blade to 0.7 m. The corners of stripping and cutting are 70 and 90 degrees, respectively. The lateral movement of the workpiece is 1.05 m, and the lowering of the supporting ground is 0.5 m (the minimum value).

Technical and economic indicators

Let's start with the management of the motor grader. The gearbox and clutch are regulated by mechanical and hydraulic units. The brakes are activated thanks to the pneumatic mechanism. Electrical equipment is a starter with a power of 8.2 kW and a voltage of 24 volts. This unit includes a pair of storage batteries type 6 CT-190A.

Below are the parameters of the technical and economic direction:

• Fuel consumption DZ 98 - 0.15 kg / cu. M.
• The capacity of the fuel tank is 485 liters.
• The hydraulic system of the machine accommodates 120 liters of hydraulic fluid.
• Working time in the machine hours (minimum) - 8400.
• The coefficient of technical application is not less than 0.85.
• Labor intensity - 0,95 man / h.
• Ergonomics - 14-31 degrees, depending on climate conditions.
• The ecological standard is GOST 12.1.012-90.
• Emission of exhaust gases and smoke level of the workplace comply with the standards of GOST 17.2.2-02.86 and 17.2.2-05.86.

In conclusion

Motor grader DZ-98, the dimensions of which are indicated above, is a unique domestic machine designed to perform a wide range of functions. The considered special equipment is able to cope with the tasks of building roads from the 1st to the 4th category, it can be equipped with various attachments.

The technique is actively used in the construction of railway sections, airfields, as well as for the needs of the meliorative, hydraulic engineering, geological and irrigation industries. An additional advantage of the machine is a wide range of operating temperatures (from -40 to +40 degrees Celsius).