Automobile slewing crane 125
The car slewing crane 125 ( ADK 125 for short ) is a slewing car crane manufactured in the GDR with a maximum load capacity of 12.5 tons (= 125 decitons ), later 13 tons.
history
As early as the mid-1960s, research was carried out in the VEB Hebezeugwerk Sebnitz , the production company for the ADK 5 and ADK 63 , on a slewing crane with a 10 t load capacity. The result was a functional model, which then served as the basis for two further functional models ADK 100 (ADK 2100) in VEB Heavy Machinery "Georgi Dimitroff" Magdeburg . In 1968/69, the development of a 12.5 t slewing car crane began, which went into series production in 1971. The chassis of the undercarriage formed a welded construction; the six-cylinder - diesel engine , as well as in forage harvester Fortschritt E 280 was used, which produced Dieselmotorenwerk Schoenebeck . One of the problems was the axles, which were manufactured by the Hungarian company Rába in Győr . However, entire assemblies such as the engine and driver's cab had to be transported to Hungary. The finished undercarriage was then connected to the superstructure in Magdeburg.
Due to the growing need for equipment for open-cast lignite mining, which were also manufactured in Magdeburg's Dimitroff factory, the production of the rotating cranes was relocated to VEB Maschinenbau "Karl Marx" Babelsberg after 1974 .
Technical specifications
- Crew: 1/1
- Crane operation: hydraulic
- maximum load capacity: 12.5 t / 13 t at max. 2.5 m, outreach supported
- maximum radius: 16.5 m / 0.18 t
- maximum lifting height: 20.3 m (with fly jib)
- Rotation range: 360 °
- maximum rotation speed: 2 / min
- maximum lifting speed: 45 m / min
- Motor: Schönebeck 6 VD, 14.5 / 12-2 SRW
- 6-cylinder four-stroke diesel engine, water-cooled
- Bore × stroke: 120 × 145 mm
- Displacement: 9840 cm³
- Output: 140 kW (190 PS) at 2300 rpm
- Transmission: 5 + 1-speed manual transmission, transfer case
- Tires: 12.00 R 20 / 18PR
- Dimensions in transport position: 8700 × 2500 × 3440 mm
- Operating weight: 19,300 kg (ADK 125-2) / 18,200 kg (ADK 125-3)
- Driving speed: 70 km / h
ADK 125
The ADK 125, which was produced in the Georgi-Dimitroff factory in Magdeburg from 1971, differed from the previous conceptual models in that it had a modified upper structure. The turntable consisted of a full-wall welded construction to accommodate the slewing ring and the rotary center lead-through from the undercarriage. The double telescopic boom had a luffing cylinder arranged in the middle of the boom. ZEMAG axles were originally intended to be used during development . However, since the investment funds for series production of axles at VEB Zemag Zeitz were not available, they were now procured from the Hungarian manufacturer Rába . Starting in 1974, production of the ADK 125 was outsourced to VEB Maschinenbau "Karl Marx" Babelsberg while production was still ongoing. Around 622 slewing cranes had been built in Magdeburg by then. In Babelsberg, the ADK 125 was built in a number of around 650 until 1976 and then replaced by the ADK 125-1.
ADK 125-1
In 1977, VEB Maschinenbau "Karl Marx" Babelsberg began series production of the ADK 125-1. This vehicle differed from its predecessor only in the changes in the details. For example, optimizing the cardan shaft angle in the drive train reduced vibrations. Furthermore, the sound insulation in the large cabin has been improved. Around 365 cranes were manufactured up to the type change in 1978.
ADK 125-2
This type was characterized by a mass reduction of 700 kg by changing the boom hydraulics and the boom head. A load moment limiter (LMB) was installed as standard and a 6-meter fly jib was provided as additional equipment. Around 740 vehicles were built between 1978 and 1980.
HC 38
The Hydraulic Crane with a maximum load torque of 38 Mpm (HC 38) was created on the basis of a distribution agreement between the foreign trade company Maschinenexport Berlin and Mannesmann DEMAG Baumaschinen Düsseldorf . Accordingly, DEMAG took over the distribution of the ADK 125-2 through its sales offices. The name HC 38 was created in adaptation to DEMAG's usual product range. The HC 38 was basically identical to the ADK 125-2, but some details on the upper and lower chassis were adapted to the legal and technical regulations in the Federal Republic of Germany. The HC 38 was also approved for sale in France.
ADK 125-3
In 1981, the series production of the ADK 125-3, approved with a load capacity of 13 tons, began. The support system was modified, which reduced the weight by 600 kg. The resulting lower axle load allowed the use of local Pneumant tires. From 1982, the exhaust system was equipped with a cyclone for spark-free exhaust gases, which allowed work in potentially explosive areas. A recovery facility ( spill ) was also new . Around 2494 cranes had been built by the end of production in 1987.
Due to the already existing brand awareness, it was decided not to change the name to ADK 130 according to the carrying capacity.
HG 125
In 1980 the construction of the lifting device with 12.5 t (HG 125) began in cooperation with the lignite industry. The Soviet T-34 tank served as the undercarriage . The superstructure was the usual ADK 125-2. The self-sufficient superstructure was equipped with a 55 kW, air-cooled diesel engine from VEB Robur-Werke Zittau , and had a full-view pulpit from VEB Schwermaschinenbau NOBAS Nordhausen . The undercarriage had a 331 kW engine. In VEB Rationalisierungsmittelbau Regis, the tub was opened at the front and equipped with a glazed driver's cab. The final assembly took place in Babelsberg. 38 vehicles had been built by 1983.
literature
- Walter Lütche: Giganten der Arbeit - 40 years of mobile crane construction in the GDR , KM-Verlags GmbH Griesheim, 2003 ISBN 3-934518-05-2
- Ralf Christian Kunkel: GDR construction machinery 1945–1990 , Motorbuch Verlag 2010 ISBN 978-3-613-03032-9
Web links
Individual evidence
- ^ Ralf Christian Kunkel: GDR construction machines 1945–1990 , Motorbuch Verlag 2010 ISBN 978-3-613-03032-9