excavators |
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Crawler shovel EKG-1500K is intended to excavate
and load minerals and overburden rock to transport
facilities at open mines for stacking and also for loading
works at storage area. The shovel provides high
productivity, good mobility, easy control and maintenance.
Up-to-date design and high-strength materials
applied in the excavator provide its reliable operation
in any climatic conditions.
The cabin elevated over machinery house provides
good field of view during operation. The cabin is spacious,
sealed, equipped with heating, ventilation and
glass heating, vibroinsulated seat and additional sections
for relaxation.
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constructional peculiarities |
excavators |
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Planetary gearboxes of excavator’s swinging mechanism
in comparison with early used gearboxes are
more compact, are of larger load-carrying capacity, reliable
and durable in work. All drives are fitted with efficient
block brakes.
Gear drives are made of high-alloyed steels with
surface thermal hardening.
The excavator stick is a single-beam construction
made of overall shells, with head molding in the
front part for fastening of dipper. The design of working
equipment unloads the stick from torsion, providing its
significant weight reduction; the damping mechanism of
duplex action, installed in the rear stick part, decreases
dynamic loads in crowd mechanism and stick when
dipper touching impassable obstacle in the face and in
case of stick blow against saddle bearing. The location
of stick damping mechanism reduces the length of rear
part and the total weight of the stick, thus favorably effecting
digging force at dipper tip.
A removable recurring half block is installed in the
front part of the stick, providing high hardness and durability
of its strand due to separate thermal treatment of
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half block and the stick.
The excavator is fitted with cable reel for highvoltage
supply cable with automatic 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 excavator dipper has stepped cutting edge
to facilitate digging in the face. To increase durability
of the dipper, its housing and bottom are reinforced
with sheet steel inserts of steel “Cart X 400” of high
hardness. Wedge-shaped bulges are provided on the
dipper lip, significantly increasing life cycle of the lip.
The dipper is fitted with bottom brake unit to decrease
impact loads on vehicles when unloading dipper.
The excavator boom is of tubular cross section
and is made of low-alloyed steel in form of doubleleg
structure with swivel joint of upper and lower sections.
The boom is unloaded from bending as crowding
force is taken by rackers and two-legged jig.
Lifting and crowd hoists are planetary. Herein the
scheme with cantilever location of drums is applied,
proved to be reliable in service conditions.
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Technical characteristics |
excavators |
| Dipper capacity, m3 |
Main |
20 |
| Changeable |
18...40 |
| Maximum load on dipper hanger, kN (tf) |
1960 (200) |
| Maximum crowd load, kN (tf) |
931 (95) |
| Design cycle duration, s |
30 |
| Traveling speed on prepared track, km/h |
0.88 |
| Maximum overcoming track slope, deg |
0.2 (12) |
| Maximum power of mains transformer, kW |
2500 |
| Rated power of auxiliaries transformer, kVA |
250 |
| Mains voltage (three-phase, 50Hz), V |
6000 |
| Average ground pressure, kPa |
240 |
| Working weight of excavator with dipper, t |
820 |
| Main dipper weight, t |
39.6 |
| Counterweight, t |
90 |
| Boom length, m |
19 |
| Stick travel, m |
5 |
| Boom pitch, deg |
45 |
| Maximum digging radius, m |
23.4 |
| Maximum digging height, m |
17.5 |
| Maximum dumping radius, m |
20.9 |
| Maximum dumping height, m |
11.8 |
| Heights to boom head blocks, m |
19.4 |
| Digging radius at grade level, m |
16.3 |
| Height to filter ventilating installation, m |
11.2 |
| Clearance under revolving frame, m |
3.56 |
| Rotation radius of revolving frame rear part, m |
10 |
| Distance from tail piece of boom to center of rotation, m |
3.2 |
| Height to two-legged jig, m |
15 |
| Operator’s eye level, m |
8.2 |
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| Lower frame of low alloyed
steel |
length, m |
8 |
| width, m |
7.9 |
| Ring gear of alloyed
steel |
diameter,
mm |
4385 |
| width, m |
300 |
| Diameter of roller disk at rail center, m |
7.6 |
| Number of rollers, pcs |
72 |
| Roller diameter, mm |
260 |
| Welded revolving
frame of low-alloyed
steel |
length, m |
16.49 |
| width, m |
4.5 |
| Frame of carrier |
total width, m |
9.4 |
| total length,
m |
12 |
| The number and diameter of supporting
wheels, mm |
10х1050mm
2х1150mm |
| Diameter of the tumbler sprocket,
mm |
1220 |
| Diameter of the bear-up wheel, mm |
1600 |
| The number and diameter of tracks,
mm |
100х500 |
| Boom welded of two sections |
| Diameter of main double-grooved units with
surface hardening of grooves, mm |
1600 |
| Diameter of crowd double-grooved units
with surface hardening of grooves, mm |
1400 |
| Diameter of dipper handle, mm |
800 |
| Thickness of dipper handle beam, mm |
50 |
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