SRs2500 (adjustable)

SRs2500 (adjustable)

Bucket wheel excavators are another design of continuously operating excavators. The buckets are mounted at the rim of a revolving drum. As the drum rotates, each bucket in turn scoops up material. The bucket wheel is located at the end of an arm, which can pivot upwards. During the revolution of the drum, the contents of each bucket are falling inside the drum and through a system of deflectors on a conveyor belt. The conveyor belt transports the excavated material along the bucket wheel arm to the central pivot of the excavator. There it falls on to another conveyor belt, which transports the material to a loading facility for e.g hopper cars.
A bucket wheel excavator consists of the lower works with the crawlers and the upper works with the bucket wheel arm, the counterbalancing arm and the mechanism for raising and lowering the bucket wheel arm. The upper works can pivot through 360 degrees around the vertical central pivot axis.
Initially bucket wheel excavators suffered from rather low forces at the cutting edges of the bucket wheel, limiting them to removal of soft materials like lignite, sand or gravel.This problem partially overcome, allowing removal of hardened or even frozen sediments too, modern bucket wheel excavators are making even inroads against the use of discontinuously operating excavators. In comparison to bucket chain excavators bucket wheel excavators are more versatile, allowing selective harvesting of e.g. lignite in geologically disturbed strata. Because of that they are gradually replacing bucket chain excavators.
Bucket wheel excavators are also widely used at storage and mixing sites for ores and black coal.
The first large bucket wheel excavators were introduced into German and Polish lignite opencast mining during the 1930ies. They continued to be built after WW II in both parts of Germany as well as Czchechoslovakia and the Soviet Union. They are ranging in size between less than 100 t to more than 70,000 t gross weight.
The biggest bucket wheel excavators are employed in the lignite mining areas of the Rhineland in the West of Germany, where depth of opencast mines is approaching 500 metres. They are used for both, removal of overburden and harvesting lignite. The larger bucket wheel excavators are linked to a seperate loading machine with an extenable conveyor belt bridge, which is running on its own set of crawlers. The first of the big 70,000 t class excavators were still fitted for train transport during the 1950ies and 1960ies until conveyor belts replaced train transport of both spoil and lignite. Like most other types of opencast mining equipment bucket wheel excavators are electrically powered.
The model shows a 70,000 t class bucket wheel excavator fitted for train transport. It has been created as an industry asset which can load either lignite or spoil into enabled traincars like kuid:142675:1258 and kuid2:211961:15000:1 or others. In surveyor the angles between several parts of the excavator and loading machine combination can be adjusted to local requirements. These properties as well as loading of traincars and operation of the excavator in driver are script controlled.

Author: K. Bernhard

SRs2500 (adjustable)
• $screenshot$.jpg 29.49KB
body
absetzer.im 297.81KB
bagger_fahrgestell.im 202.91KB
bagger_mittelbau.im 100.49KB
bagger_mittelbau_basis.im 2.67KB
bagger_mittelbau_basis.kin 2.05KB
bagger_oberbau.im 180.11KB
bagger_oberbau_basis.im 1.27KB
bagger_oberbau_basis.kin 1.50KB
bagger_oberbau_schwenkanimation.im 1.28KB
bagger_oberbau_schwenkanimation.kin 3.20KB
bagger_schaufelrad.im 28.39KB
bagger_schaufelrad.kin 2.34KB
bagger_schaufelradausleger.im 258.40KB
bagger_schaufelradausleger.kin 6.95KB
diagonalversteifung.bmp 96.05KB
diagonalversteifung_dunkelgrau.tga 96.04KB
dunkelgrau.texture.txt 33 bytes
dunkelgrau.tga 786 bytes
ers2500_body.texture.txt 35 bytes
ers2500_body.tga 768.02KB
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
gelaender_rot.texture.txt 36 bytes
gelaender_rot.tga 786 bytes
kabel.texture.txt 28 bytes
kabel.tga 812 bytes
kettenglied.texture.txt 34 bytes
kettenglied.tga 24.02KB
kreuzverband.bmp 192.05KB
kreuzverband_dunkelgrau.tga 192.04KB
maschinenraum_dunkelgrau.tga 192.04KB
montagekran.im 30.12KB
riffelplatte.texture.txt 35 bytes
riffelplatte.tga 48.04KB
schaufelrad.texture.txt 34 bytes
schaufelrad.tga 48.04KB
schurre.texture.txt 30 bytes
schurre.tga 24.04KB
srs2500_gelb.texture.txt 35 bytes
srs2500_gelb.tga 786 bytes
verlader_band.im 160.63KB
verlader_band.kin 1.84KB
verlader_basis.im 2.67KB
verlader_basis.kin 2.05KB
verlader_fahrgestell.im 194.77KB
• coal_load0.wav 104.12KB
• coal_load1.wav 104.11KB
• config.txt 41.05KB
• ers2500.gs 40.35KB
• ers2500.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