ERs750 (adjustable)
Chain bucket excavators are the direct descendants of the dredges employed from the 17th century in the Netherlands to deepen shipping channels and harbour basins. At the beginning of the 19th century the first steam dredges were built in the USA and the UK. Steam dredges were widely employed during construction of the Suez and Panama canals. Since the middle of the 19th century steam powered chain bucket excavators were developed by French designers for digging dry sediments like sand, gravel or clay above the ground water level.
The use of chain bucket excavators with lignite opencast mining in Germany started at the begin of the 20th century. The early models were rigid, steam powered and invariably running on rails. Nowadays opencast mining industry employs a variety of different types, which are invariably electrically powered. While the larger types are still running on rails, the smaller ones are moving on crawlers. The bucket chain is motile and may be adjusted for cutting downwards, horizontally or upwards. All major components, lower works with the crawlers, middle works with the loading arm as well as upper works with the bucket chain can be moved independently by 360 degrees around the central verical axis. Ihis feature increases versatility considerably in comparison to older models. Major manufacturers were East Germany, West Germany and Czechoslovakia. While the former built bucket chain excavators moving either on rails or crawlers, Czechoslovakia is known for their walking bucket chain excavators.
According to the nomenclature used in East Germany to classify opencast mining equipment this type is designated ERs 750. E meaning chain bucket, R crawlers and s swiveling upper works, 750 is the volume in litres of each bucket. Its gross weight is around 500 t. it cutting depth is 10 metres. The ERs 750 is one of the more common medium types mainly used for harvesting lignite.
The development of chain bucket excavators has come to an end as they are gradually replaced by bucket wheel excavators, which are even more versatile, allowing more selective excavation of lignite and overburden.
The model is built as an industry asset, which can load lignite or overburden into enabled railcars. The angles of the loading arm as well as the upperworks with the bucket chain can be adjusted through a menue in the explorer. Likewise, the bucket chain can be changed from horizontal to deep cutting. The type of product loaded can be selected by the menue too. The animation of the bucket chain is controlled by script.
Author: K. Bernhard
- ERs750 (adjustable)
- $screenshot$.jpg 26.77KB
- dunkelgrau.texture.txt 33 bytes
- dunkelgrau.tga 786 bytes
- ers750_abwurfarm.im 247.86KB
- ers750_basis.im 12.05KB
- ers750_basis.kin 1.45KB
- ers750_eimerkette_horizontalschnitt.im 54.77KB
- ers750_eimerkette_horizontalschnitt.kin 21.20KB
- ers750_eimerkette_tiefschnitt.im 52.57KB
- ers750_eimerkette_tiefschnitt.kin 19.70KB
- ers750_eimerleiter_horizontalschnitt.im 171.71KB
- ers750_eimerleiter_tiefschnitt.im 171.66KB
- ers750_oberbau.im 212.56KB
- ers750_oberbau_basis.im 1.53KB
- ers_750_oberbau_basis.kin 1.49KB
- ers_750_unterbau.im 124.82KB
- fabrikfenster_kurz.bmp 48.05KB
- fabrikfenster_kurz.texture.txt 71 bytes
- fabrikfenster_kurz.tga 48.04KB
- foerderband.texture.txt 34 bytes
- foerderband.tga 48.04KB
- gegengewicht.texture.txt 35 bytes
- gegengewicht.tga 48.04KB
- gelaender.texture.txt 32 bytes
- gelaender.tga 812 bytes
- gelaender_gelb.texture.txt 37 bytes
- gelaender_gelb.tga 12.02KB
- kabel.texture.txt 28 bytes
- kabel.tga 812 bytes
- kabeltrommel.texture.txt 35 bytes
- kabeltrommel.tga 96.02KB
- kettenglied.texture.txt 34 bytes
- kettenglied.tga 24.02KB
- kreuzverband.bmp 192.05KB
- kreuzverband_dunkelgrau.texture.txt 70 bytes
- kreuzverband_dunkelgrau.tga 192.04KB
- maschinenraum_dunkelgrau.texture.txt 47 bytes
- maschinenraum_dunkelgrau.tga 192.04KB
- raupenlaufwerk.bmp 96.05KB
- raupenlaufwerk.texture.txt 63 bytes
- raupenlaufwerk.tga 96.02KB
- riffelplatte.texture.txt 35 bytes
- riffelplatte.tga 48.04KB
- schaufelrad.texture.txt 34 bytes
- schaufelrad.tga 48.04KB
- schild ers 750_315.tga 192.02KB
- schild takraf.tga 192.02KB
- schurre.texture.txt 30 bytes
- schurre.tga 24.04KB
- speichenrad.bmp 48.05KB
- speichenrad.texture.txt 57 bytes
- speichenrad.tga 48.02KB
- coal_load0.wav 104.12KB
- coal_load1.wav 104.11KB
- config.txt 26.98KB
- ers750.gs 27.65KB
- ers750.tga 16.53KB
- ladung_abraum0.tfx 388 bytes
- ladung_abraum1.tfx 388 bytes
- ladung_abraum2.tfx 388 bytes
- ladung_braunkohle0.tfx 388 bytes
- ladung_braunkohle1.tfx 388 bytes
- ladung_braunkohle2.tfx 388 bytes
- umwelt.wav 96.13KB
body
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