D-902
| Udarnik | |
|---|---|
 Snow blower D-902 on Ural-375E in the Aviation Museum Rothenburg (2019)
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| D-902 | |
| Manufacturer: | Udarnik factory |
| Sales designation: |
Д-902 ДЭ-211 |
| Production period: | 1966–1990s (?) |
| Previous model: | none |
| Successor: | DE-226 |
| Technical specifications | |
| Designs: | Snow blower |
| Engines: |
Otto engine (V8) + diesel engine (V12) |
| Power: | 132 + 294 kW |
| Perm. Total weight: | 15.2 t |
The D-902 ( Russian Д-902 ) is a heavy snow blower based on the Soviet Ural-375 truck , which was built in series from 1966 to the late 1980s or early 1990s. The snow clearing technology was developed in the Udarnik road machine plant in Minsk , where series production also took place. Due to changed designation systems, the machines of later years of construction were named DE-211 (Russian ДЭ-211). Because of their high clearance performance, they were used in particular on airfields; some specimens also came to the German Democratic Republic .
The successor was the DE-226 , built since the 1980s , based on the Ural-4320 with a diesel engine. These machines are still produced in Minsk today.
Vehicle history
Heavy truck-based snow blowers were built in the Soviet Union as early as the 1950s, for example based on the MAZ-502 and the ZIS-150 . From 1959 Sewdormasch manufactured the D-470 in large series. In 1966, the Udarnik plant in Minsk began building the D-902 based on the chassis of the Ural-375E . The E variant was already intended for special bodies ex works. The peak clearing performance could be increased significantly from around 700 to almost 1400 tons of snow per hour.
Unlike the smaller D-470 based on the ZIL-157 , the truck's engine was not removed. It continues to drive the vehicle. A 1D12BMS diesel engine was also installed in the superstructure to drive the milling machine . The V12 with a displacement of almost 40 liters develops 400 hp (294 kW) and is a throttled derivative of the W-2 tank engine , as used in almost all Soviet main battle tanks since the T-34 . The output was later increased to 420 hp (309 kW). The power is transmitted to the milling unit at the front of the vehicle via cardan shafts and chains.
The height of the milling machine is hydraulically adjustable and has a working width of 2.8 m. It consists of two screw conveyors that transport the snow inside and a rotor with six rotor blades and 1.2 m diameter that throws the snow to the side. The height and direction of the ejection are adjustable, the maximum throwing distance is around 65 m. The entire milling device is connected to the vehicle by a subframe with two spars. In order to be able to carry the additional load, the front axle of the truck has been reinforced. The gear ratio was modified for the low working speeds, which at the same time limited the top speed to 40–50 km / h. In addition, the front bumper was removed, another subframe was attached as an attachment point for the lifting hydraulics and the headlights were relocated to the cab roof. These conversions and the production of the body took place in Minsk.
The D-902 was shown at various trade fairs and exhibitions from the mid-1970s and won a gold medal at the Leipziger Messe in 1975. Due to changes in the standardized designation systems for Soviet construction and road machines, later copies were also referred to as DE-211. The machines were used both civilly for winter service and by the Soviet Army to keep airfields free from snow. Here it was needed even with rather small amounts of snow, as it removed the snow walls pushed together by the snow plows from the runway. The recommended minimum snow depth for the D-902 is 70 cm. Some of the snow blowers also came to the German Democratic Republic . It is not known exactly when production ended. Since the mid-1980s at the latest, the DE-226 was built as a successor to the Ural-4320 , and production of the Ural-375 was finally discontinued in 1993. The DE-226 is still being built almost unchanged today by the construction machinery company Amkodor in Minsk, which also included the Udarnik factory in the 2000s.
Technical specifications
For the series vehicles of type D-902, unless otherwise noted.
- Base vehicle: Ural-375E
- Drive:
- Drive engine: four-stroke V8 petrol engine , water-cooled
- Engine type: ZIL-375
- Power: 180 PS (132 kW)
- Displacement: 6959 cm³
- Compression: 6.5: 1
- Milling engine: four-stroke V12 diesel engine , water-cooled
- Engine type: 1Д12БМС (German 1D12BMS)
- Power: 400 PS (294 kW)
- Displacement: 38,880 cm³
- Tank capacity: 210 + 60 l
- Fuel:
- Drive motor: gasoline with at least 76 octane
- Milling machine: diesel, kerosene or a mixture of diesel and a maximum of 20% petrol
- Transmission: five-speed mechanical transmission with reverse gear
- Reduction gear: mechanical, two-stage
- Top speed: 52 km / h (also 40 km / h indicated)
- Working speed: 0.334–6.74 km / h (also given slightly different data)
- Drive formula : 6 × 6
Dimensions and weights
- Length: 10,050 mm
- Width: 2810 mm
- Height: 2940 mm
- Wheelbase: 3525 + 1400 mm
- Front and rear track: 2000 mm
- Weight when ready for use: 15,200 kg
- Turning circle: 21.6 m
- Tire size: 14.00-20 ″
- Maximum amount of clearable snow per hour: 1375 tons, later 1500 tons
- maximum snow depth: 1600 mm
Individual evidence
- ↑ a b c d Yevgeny Kochnev: Автомобили Советской Армии 1946–1991 . Chapter on the Urals-375.
- ↑ a b c d e History and data about the vehicle on aviaros.narod.ru (Russian)
- ↑ a b Motor data of the 1Д12БМС (Russian)
- ↑ a b c d Technical data for the D-902 on the website of the Aviation Technology Museum Association in Rothenburg
- ↑ Website for the successor DE-226 or Amkodor-9531 (Russian)
literature
- Yevgeny Kochev: Автомобили Советской Армии 1946–1991 . Eksmo, 2011, ISBN 978-5-699-46736-5 .
- Airfield snow cutter blower Д-902. Description and operating instructions . V / O Awtoexport, Moscow, USSR, as of March 1972.
- Аэродромный шнеко-роторный снегоочиститель Д-902. Каталог деталей и узлов . Spare parts catalog from the manufacturer, as of January 1, 1971.
