• 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

ESH 11.75
The 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 stripping overburden either into the mined-out space or to the pit side. High-production and reliable machines operating in all areas of open pit mining at the ambient temperature from plus 40°C to minus 40°C. The boom is of three-edged tubular structure with preliminary cable-braced upper chord. The support frame and the revolving frame having sections joint with high-strength bolts with factory installed ring gear sectors and roller disk rails. ESH 11.75 - is a four-link crank-articulated propel mechanism with d.c. drive. Lifting and crowd winches with reels are installed in cantilever on output shafts of gearboxes. Swing mechanism with two planetary gearboxes. Swing gear and bearing assembly with cylindrical rollers and circular rails rolled of R.R. rail. Automatic lubricating system of swing units and semi-automatic lubrication of mechanisms. Main mechanisms have d.c. motor drives of "generator-motor" type with excitation of electrical machines from static thyristor converters. The control system has semiconductor element and operational amplifier base. Micropocessor-based information and analyzing system allows to check the dragline productivity, energy consumption, setting parameters, charge, availability of ventilation flow in electrical machines, temperature of bearings and excitation windings. The electrical machines and control system are specially designed for operation in draglines.