ESh-15/90

We supply spare parts for this excavator model from stock in Krasnoyarsk and place orders with machine-building plants. Requests are received by fax: +7 (391) 2901555, 2901500, and 2901501.

Full-revolving electric digging walking machine with dragline working equipment. It is designed for excavation of ground of category I to IV including when stripping overburden with direct dumping the waste either into the mined-out space or to the pit side. Blast-loosening is demanded when mining the ground of category III and IV.

The excavator can be used for opencast extraction of coal and other opencast minings, also for construction of channels, irrigation systems and various hydraulic works.

It is designed for stripping overburden rocks with direct dumping the waste either into the mined-out space or to the pit side. The excavator operates at temperature from minus 50° up to plus 40°C.

The excavator bears on the ground with round base frame welded of sheet low-alloy steel. The revolving frame, bearing superstructure, working equipment and mechanisms are fitted on the base frame with the help of roller swing gear and bearing assembly. The superstructure is the support for boom hanger and walking mechanism cylinders.

The excavator working equipment includes a boom, a dipper with ropes and rope sheaves set on the boom and superstructure. All the bearing structures – boom, base frame, superstructure, revolving frame – are made of low-alloy steels increasing their strength.

The boom is made of three rigid tubular chords forming a triangular pyramid. The top boom chord is preliminarily compressed by the ropes that results in occurrence of only alternative compression stresses in it during operation and increases its reliability and service life. The boom in working position is supported by two braces and four ropes. A special boom winch with rope layer and rope pulley block is used for boom raise and lowering.

Cast-welded dipper with 40 m3 capacity may dig and transport the material. It is supported by four hoist ropes and four drag ropes 64 mm in diameter.

Three-support hydraulic drive of walking mechanism reduces the weight, provides smooth moving and good cross-country capacity, increases the operation time.

Air ventilation unit ensures clean air supply with volume more than 400000 m3/h and creates a positive pressure in the excavator house keeping it from dust.

Electric overhead travelling crane with 5 t capacity is set inside the house, electric hoists are set on the left and right sides and the boom for erections, repairs and some minor works.

The excavator electrical equipment has “generator-motor” system with machinery converters of cable power into direct current. The change of rotary speed of main electric motors and generators is driven by thyristor converters.

Two operator’s cabs enable control either from the left or right side depending on particular conditions in the pit-face. Sound- and heat-insulation, air ventilation units, electric air heaters, screen wipers and shock absorbers in the cab suspension improve the crew environment. The seat can be set in any position convenient for the operator, window front wall and sidelights provide good working pit-face visibility.

To ease the transportation the base and revolving frame consist of segments connected by high-strength bolts.

Basic technical parameters

Section "Walking excavators"