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WALKING DRAGLINES

excavators

dragline

Walking draglines are used in open pit mining (coal, shale, ferrous and nonferrous metal ores, gold, raw material for chemical industry, etc.).
They are designed for overburden works and laying rock in to the mined-out space for onto the pit wall. The excavators are able to move a mined rock onto the long distances. At mining rock of high rigidity partly or complete ground scarifying with blasting out. Simplicity of erection, maintenance and repair, reliability, high readiness of mechanisms for operation, high maneuverability, fine passing ability, wide technological abilities allow to operate excavators with large efficiency. The excavators work reliably under the temperature from -500 to +400.
We offer to the Customers 13 draglines standard sizes with capacity of buckets 11…100 m3 and boom length 75…130 m, including 6 variants with low specific ground pressure.

constructional peculiarities

excavators

Excavator boom represents triangular three-dimensional truss made of tubular elements. The top dragline boom chord is preliminarily compressed with a force, exceeding the tension caused by the working loads, that increases the fatigue strength of the structure, its reliability and service life.
The base and revolving frame consist of segments connected by high-strength bolts, that decreases erec¬tion costs and time.
The hydraulic walking mechanism provides smooth moving and high maneuverability of the machine. Depending on the dragline model the walking mechanism may be made with three or four walking shoes.
The swinging mechanism may be equipped with a different number of planetary or conventional gear cases depending on excavator model.
Large dragline models have gearless drive of swinging mechanism with 4, 6 or 8 low-speed electric motors.
Roller circle is with tapered rollers and forged rails of increased operational life.
Two operator’s cabs allow to control it either from the

right-hand and the left-hand side depending on particular conditions of pit-face. The cabs are designed in compliance the latest requirements of ergonomic standards and are comfortable to work in.
Centralized lubricating automatic system ensures a long service life of excavator mechanisms and units with minimum power losses due to friction and allows to save lubricants.
The main mechanisms are driven with direct current electric motors via the motor-generator system, with electric machine energization by thruster converters. Control system is designed on the base of semiconducting elements.
Information and diagnostic microprocessor-based system allows to control excavator rates, power consumption, developed settings, loading and ventilating stream of electrical machines, temperature of bearings, energizing windings.
Electrical machines and control systems are purposely designed for conditions of operation with excavators.

Technical characteristics

excavators

Parameters ESh11.75 ESh20.90 ESh15.100 ESh25.90 ESh20.100 ESh15.110 ESh40.100 ESh30.110 ESh25.125 ESh65.100 ESh40.130 ESh100.100 ESh100.125
Bucket capacity, m3 11 20 15 25 20 15 40 30 25 65 40 100 100
Boom length, m 75 90 100 91 100 110 100 110 120 100 130 100 125
Bloom tilt angle 32 32 32 32 34 34 32 32 32 32 32 32 35
Suspended load, ton-force 33 63 47 77 63 47 125 95 90 205 125 300 300
Work cycle time (ground of the first category), sec 56 60 60 60 62 64 60 64 66 60 62 60 60
Dumping height, m 30.6 38.5 45 37.5 45 52 40 46.2 52.4 38.5 56 43 56
Digging height, m 38 42.5 46 47 46 50 47 53 57 46 60 47 52
Dumping radius, m 71.4 83 91.5 85.5 91 99 94.8 103 117.7 97.6 123 97 118
Revolving frame clearance, m 1.45 1.61 1.61 1.6 1.6 1.6 2.44 2.44 2.44 2.84 2.84 2.75 2.75
Diameter of base, m 10.8 14.5 14.5 15.3 15.3 15.3 18 18 18 23.5 23.5 27 27
Specific ground pressure,MPa 0.087/ 0.145 0.105/ 0.24 0.105/ 0.24 0.103/ 0.187 0.103/ 0.187 0.103/ 0.187 0.137/ 0.2 0.137/ 0.2 0.137/ 0.2 0.125/ 0.2 0.125/ 0.2 0.18/ 0.265 0.18/ 0.265
Walking shoe dimensions (length and width), m 11.6х 1.9 13х 2.5 13х 2.5 14х 2.9 14х 2.9 14х 2.9 17.2х 3.96 17.2х 3.96 17.2х 3.96 18х 3.9 18х 3.9 22.5х 4.74 22.5х 4.74
Working weight, t 840 1690 1710 1900 1900 1900 3310 3420 3400 5460 5460 10300 10000
Hoist winch power, kW 2x 500 2x 1120 2x 1120 2x 1120 2x 1120 2x 1120 4x 1120 3x 1120 3x 1120 8x 1120 6x 1120 4x 2500 4x 2500
Swinging mechanism power,kW 2x260 4x 250 4x 250 4x 250 4x 250 4x 250 4x 600 4x 600 4x 600 6x 600 6x 600 8x 1000 8x 1000
Drag winch power, kW 2x 500 2x 1120 2x 1120 2x 1120 2x 1120 2x 1120 4x 1120 3x 1120 3x 1120 6x 1120 4x 1120 4x 2500 4x 2500
Propel machinery power, kW 500 2x 400 2x 400 2x 630 2x 63 2x 630 2x 630 2x 63 2x 630 4x 630 4x 630 4x 800 4x 800
Main motor power, kW 1250 2500 2500 2500 2500 2500 2x 2250 2x 2250 2x 2250 4x 2250 4x 2250 4x 3600 4x 3600
Supply voltage, kW 6 6 6 6 6 6 10 10 10 10 10 10 10
Drive type GM w/ TE GM w/ TE* GM w/ TE* GM w/ TE* GM w/ TE* GM w/ TE* GM w/ TE* GM w/ TE* GM w/ TE* GM w/ TE GM w/ TE GM w/ TE ГД с ТВ
 
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