Uralmash EKG
The Uralmasch EKG is a large cable excavator with a crawler chassis , which has been manufactured by the Russian engineering company Uralmasch since 1947 and is used in quarries , sand and gravel pits and on large earthworks . With a number of more than 13,300 manufactured copies, the EKG is one of the most popular excavators of this size. The duty cycle crawler crane has an electric drive and, thanks to its robust design, usually achieves long periods of use. For example, several EKG-5A from the 1980s in the Karsdorf opencast mine near Laucha an der Unstrut continue to mine shell limestone for cement production.
history
The model for the EKG was the Bucyrus-Erie 120-B , which was developed in the 1920s . In the 1930s, the Soviet Union had an eye on the excavator and was striving for a license agreement and subsequent high-volume production. In this way, a lengthy in-house development should be avoided.
During the Second World War, some 120-B were then imported to Russia and then completely dismantled and examined under the leadership of the engineer Boris Iwanowitsch Satowski using the so-called reverse engineering process . The construction plans for the EKG were then made from the knowledge gained.
Mass production started in 1947. The shovel of this first series was around 3 cubic meters and therefore the excavators were given the type designation SR-3. Over the years, the capacity of the spoon, the weight and the drive power were increased. The SR-4 followed in 1956 and the EKG-4 in 1962. Then in 1965 Uralmash built the EKG-4.6.
The designers continued to develop the duty cycle crawler crane in the 1970s and added electronic components. In addition, important components were encapsulated so that the excavator can also work under extreme weather conditions and at temperatures of −40 to +40 degrees. The result was the type EKG-5, which went into production in 1980 and, in contrast to its model B-120, is manufactured almost identically to this day.
swell
- Max Scholz: Jahrbuch Baumaschinen 2019. Podszun-Verlag, 2018, ISBN 978-3-86133-894-9 , page 69 ff.