excavators |
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The excavator is designed to excavate and load
mineral products and overburden rock to transport
facilities at open mine workings, for stacking
and also for loading works at storage area.
Models EKG-5U and EKG-8Us were produced
on the basis of excavator model EKG-10. Excavators
with elongated working equipment may
be used for digging basic trenches, and also for
loading on transport facilities, located in overlying
lifts.
EKG-10 and its modifications provide high productivity,
good mobility, easy control and maintenance.
Up-to-date design and high-strength
materials applied in these excavators provide its
reliable operation in any climatic conditions.
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constructional peculiarities |
excavators |
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The shovel is equipped with up-to-date electronic
system on the basis of thruster converters
providing independent stepless control of the main
drives and formation of optimal static and dynamic
characteristics according to “generator-motor”
scheme. The system is provided with necessary
blockings to ensure reliable and safety excavator
operation. Block design of converters provides
easy troubleshooting and repair. A saddle bearing with adjustable side and upper
rollers for directing of stick motion at crowdreturn
is applied in the excavator. This enables to
compensate wear and to reduce dynamic loads on
the excavator working equipment. Planetary gearboxes of the hoist and swing
mechanisms in comparison with early used gearboxes
are more compact, have larger load-carrying
capacity, and are reliable and durable in work.
Gear drives are made of high-alloyed steels with
surface thermal hardening.
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Single-beam stick is made of high-test
punched tube. The dipper is flanged to the stick
stationary with high-strength bolts providing
easy replacement and high reliability (no gaps
and mobility in connections). The stick is unloaded from torsion, and is fitted
with damping mechanism of duplex action,
installed in the rear stick part. A removable recurring
half block with high surface hardness is
installed in the front part of the stick. The shovel is fitted with electrically driven
cable reel for reeling and unreeling of the cable
when the excavator is moving and during its
operation in the face. Cable reel capacity is 630
m. The cabin elevated over machinery house
provides good field of view during operation. The
cabin is spacious, sealed, provided with heating,
conditioning, ventilation, glass heating and also
with vibroinsulated seat.
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Technical characteristics |
excavators |
| Capacity of main dipper, m3 |
10 |
| Capacity of changeable dippers, m3 |
8; 12,5; 16 |
| Maximum load on dipper hanger, kN (tf) |
980 (100) |
| Design cycle duration, s |
26 |
| Traveling speed on prepared track, km/h |
0.7 |
| Maximum overcoming track slope, deg |
12 |
| Maximum power of mains motor, kW |
800 |
| Maximum power of transformer, kW |
160 |
| Mains voltage (three-phase, 50Hz), V |
6000 |
| Average ground pressure during
moving, kPa |
crawler belt 1100 mm |
313 |
| crawler belt 1400 mm |
224 |
| Working weight with dipper, t |
395 |
| Main dipper weight, t |
16.2 |
| Weight of counterweight, t |
45-50 |
| Boom length, m |
13.86 |
| Stick travel, m |
4.55 |
| Boom pitch, deg |
45 |
| Maximum digging radius, m |
18.45 |
| Maximum digging height, m |
13.50 |
| Maximum dumping radius, m |
16.30 |
| Maximum dumping height, m |
8.60 |
| Heights to boom head blocks, m |
14.62 |
| Digging radius at grade level, m |
12.60 |
| Height to filter ventilating installation, m |
8.29 |
| Clearance under revolving frame, m |
2.77 |
| Rotation radius of revolving frame rear part, m |
7.78 |
| Distance from tail piece of boom to center of rotation, m |
2.4 |
| Height to two-legged jig, m |
11.56 |
| Operator eye level, m |
7.65 |
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| Welded lower frame of
low-alloyed steel |
length, m |
3.88 |
| width, m |
3.55 |
| Ring gear of alloyed
steel |
diameter,
mm |
4391 |
| width, m |
280 |
| Diameter of roller disk at rail center, m |
3.80 |
| Number of rollers, pcs |
40 |
| Roller diameter, mm |
230 |
| Welded revolving frame
of low-alloyed steel |
length, m |
12.33 |
| width, m |
3.90 |
| Carriage |
total width, m |
6.68 |
| total length,
m |
6.98 |
| Number and diameter of support
wheels, mm |
4х960 мм;
4х1350 мм |
| Diameter of driving wheel, mm |
1380 |
| Diameter of idler wheel, mm |
1380 |
| Number and pitch of crawler tread mm |
74x470 |
| Boom welded of 2 sections |
| Diameter of two-strand pulleys with surface
treatment of grooves, mm |
1365 |
| Diameter of crowding two-strand pulleys with
surface treatment of grooves, mm |
1452 |
| Stick diameter, mm |
700 |
| Wall thickness of stick beam, mm |
50 |
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