Walking draglines

• ESh 11.75

• ESh 20.90

• ESh 25.90

• ESh 40.100

• ESh 65.100

• ESh 100.125

 Crawler draglines

 Electric shovels

 Hydraulic shovels

 Rotary Drilling Rigs

Walking Draglines

Walking draglines are used in open pit mining (coal, shale, ferrous and nonferrous metal ores, gold, raw materials for chemical industry and refractories, etc.). They are designed for overburden works and laying rock into the mined-out space or 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 manoeuvrability, 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 number of draglines with capacity of buckets 11…100 m³ and boom length 75…130 m, including 6 variants with low specific ground pressure. 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 erection 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 thyristor 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.