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The front-end equipment is manufactured
of high-strength steels, ensuring
trouble-free operation under high dynamic
loads. A specific geometry of dipper allows
to load rocks into the trucks with 75 -120 t
capacity, and also into the railway dumpcars. Rotation gears are planetary. They are
more compact and reliable in comparison
with cylindric ones. The equally-spaced location
of gears excludes a radial loading on
bearing of king journal. The boom is hold in the operative position
with four guys, ensuring reliability in
operation. The crawler is with open large rollers,
with arranged above the ground tumbler
sprockets, equipped with replaceable driven
teeth. Driven electric motors, located on
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aclinal bracket, provide easiness of erection,
centering adjustment and execution of repair
works. The forced air-cooling of the propel motors
provides unlimited practically drive operating
regime at travel along prepared route at the
velocity up to 1.1 km/h. Two-axis hand-worked command-apparatuses,
the devices for vibration insulation of
operator seat and air-conditioning system create
the comfortable conditions for excavator
driving. Electric drive of the shovel main mechanisms
is made as the motor-generator system,
controlled by thyristor energizers. Electric driver control system provides optimal
mechanical characteristics of drive at
high efficiency. Electric drive system is easy to
maintain, reliable and provides low operation
expenses.
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