How Much Do You Know About Electric Rope Shovels?

How Much Do You Know About Electric Rope Shovels?

What Are Electric Rope Shovels?
The electric rope shovel is a single bucket excavator that uses gears, chains, wire rope, pulley blocks and other transmission parts to transmit power. Its production has a history of 100 years.
The electric shovel is one of the main mining machines in ten million ton open-pit mines, with high productivity, high operating rate and low operating cost. It is recognized as a model in the mining industry.

Components of The Electric Rope Shovel
The electric rope shovel is composed of walking system, swing system, working system, lubrication system and air supply system.
The bucket is the main part of the electric rope shovel, which directly bears the force of the ore to be excavated, so the wear is large.
The dipper handle is also one of the main components of the electric shovel in the excavation process. Its role is to connect and support the bucket, and transmit the pushing action to the bucket. The bucket completes the soil excavation action under the combined action of pushing and lifting force.

Digging of The Electric Rope Shovel
Electric roppe shovels are the main mining equipment in modern open-pit mines. The bucket of the electric shovel is usually rigidly fixed on the dipper handle, and is pulled into the material to be excavated by the steel rope. It can only make a forced circular motion in one direction, rather than working according to the composition of the material to be excavated. Therefore, the bucket cannot follow the seam.
The digging force on the bucket comes from the vertical component of the rope tension. Generally, only 28% - 60% of the rope static tension can be used for digging.

Structure of The Electric Rope Shovel
Excavation System:
The bucket structure of electric rope shovels is mostly forward shovels. Saddle bearings are installed in the middle of the boom. The dipper handle is supported on it and can rotate around it, and it can be telescoped by gear racks or steel cables.
During operation, the boom is used as the support, the stick is extended, the bucket teeth are forced into the excavation surface, and the bucket is lifted by the lifting cable for excavation. The bottom of the bucket can be opened for unloading. The rotary table is driven by gears and adopts ball or roller slewing bearings. Large machines also often use roller slewing bearings, but the friction resistance is large.

Walking System:

The whole machine is driven by the engine through chains and gears. Due to the limitation of bearing capacity, the tire type walking system is only applicable to small and medium-sized models. Large machines like electric shovels use caterpillar chassis structures.