Description and technical characteristics of ECG excavators

Excavators EKG-5A and other models of domestic mining crawler excavators (abbreviated EKG) have been produced since 1967. Until the 70s, 2 modifications were produced - excavators EKG-4.6A, and its improved type - EKG-4.6B. But the need to modernize serial equipment led to the appearance of the EKG-5A excavator. This model entered the market in 1980. EKG-5 excavators are produced to this day. Experts did not make significant changes to the design of the equipment. This model is produced by. In general, there are several manufacturers in our market, specializing in different models.

Description of ECG excavators

Excavator ECG - decoding numbers and letters. The numbers in the model names indicate the volume of the bucket in cubic meters. The number is followed by a letter index indicating the manufacturer's improvement. For example:

• letter A - indicates the first update of the model;
• the letter U is an extended piece of equipment designed for top loading;
• the letter D stands for diesel;
• the letter N is the name of the Novokramatorsky Machine-Building Plant;
• letter I - Izhora factories.

Let's look at the description of the design. The excavator is not complicated. The machine has 1 scoop, moves on tracks, and the control cabin rotates freely around its axis. The main equipment is called a mechanical shovel.

This machine has proven itself well in the quarry; it is used to develop lands of various categories. The mining and coal industries cannot do without this technology. The machine digs up the soil during mining, performs loading operations, filling dump trucks with a dump.

You can also install vertical impact crushers for rock https://www.mpcrusher.ru/product/statsionarnye-dso/vertikalnye-udarynye-drobilki/ with a different range of rotor rotation speeds.

Disc brake

Types of ECG excavators and main characteristics of the equipment

EKG-5A excavators are designed as follows.

The chassis consists of the following elements:

• frame;
• caterpillars;
• ring gear;
• travel reducer.

The hydraulic system controls the brakes and clutches.

Rotating platform on which are installed:

• driver's cabin;
• winches;
• two-legged stance;
• 2 rotary mechanisms;
• pneumatic system (controls the brakes);
• electrical equipment.

The undercarriage is supported by a roller circle.

The pneumatic system is responsible for the rotation, pressure, and lift brakes. Blows dust out of equipment. All this works using compressed air from a 2-cylinder compressor.

The hydraulic system controls the chassis brakes.

High-voltage current receiver located between the lower and rotary frames.

The boom (handle) consists of 2 beams welded together. On the platform side, the boom rests on bearings. Its upper part is supported by weight thanks to a rope pulley.

The bucket has 5 removable teeth, the bottom of which is opened using ropes. The rope aligns itself automatically.

Travel drive

Specifications

• Engine - weighs 2 tons, Ag-M brand (200 kW);
• The total weight of the machine is 196 tons.

The machine is controlled from the operator’s cabin, which creates fairly comfortable working conditions. There are partitions that remove sound and vibration, good visibility. The cabin is equipped with air conditioning.

The ECG-5 line includes the following models:

1. EKG-5V, in which the bucket teeth were replaced with hammers (pneumatic impact), which makes it possible to process the rock without preliminary explosions and drilling. Bucket capacity - 5 m³; scooping radius - 14.5 m; track width is 90x110x140 cm. This model is used in places where it is impossible to carry out explosions.
2. EKG-5D, in which a diesel-electric engine is installed to load rock into a dump truck after development. The bucket volume is 4.6-6.3 m³; digging radius - 14.5 m; track width is 90x110x140 cm, operating weight is 195 tons. The fuel tank holds 3800 liters. It is designed for continuous daily operation of the machine.
3. EKG-5A-US - the length of the working boom has been changed (increased) to facilitate work in high areas:
   scooping radius - 15.5 m;
4. bucket volume - 4.6 m³;
5. track length - 5.83 m;
6. caterpillar width - 90x110 cm.
7. working weight - 211 t; power of the network motor is 250 kW.

Excavator EKG-5A: electrical equipment. EKG-5A receives power from an external distribution device, the current flows through a high-voltage cable. The electrical circuit is single-line.

Characteristics:

• cable cross-section - 3x16 + 1x6, for tropical climates - 3x25 + 1x10;
• rated voltage - 3000 or 6000 V;
• frequency - 50 or 60Hz;
• permissible voltage fluctuations are from 5 to 10%.

Electrical equipment consists of electric drives for auxiliary and main mechanisms, as well as lighting. The power consumption of the machine is 250-275 kW.

Current relay protection and calculation of used energy occurs at substations. Grounding is carried out to the quarry grounding loop using a cable core. The excavator has a device that monitors the state of the 220 V electrical network.

The bucket and all parts are made of wear-resistant materials that can withstand high loads and reliable operation.

The digging process is automated, which greatly facilitates the driver’s work and saves fuel. Key structures are made of alloy rolled steel, this increases the reliability of the equipment under any conditions.

The electric drive is made using the “generator-motor” method.

Since the EKG excavator is heavy equipment, its movement (transportation) is carried out using railways or vehicles, while the two-legged stand and working equipment are dismantled.

Let's take a look at ECG mining excavators.

Heavy equipment working in quarries is constantly being improved. It is in no way inferior to imported technology, even superior to it. There are several manufacturers of excavators of this type in the CIS. These include:

1. , known as UZTM (Ural Heavy Engineering Plant).
2. Ukrainian heavy engineering plant, better known as Novokramatorsky.
3. "OMZ technologies and mining equipment."
4. "Azovmash".
5. "Mining Engineering Technologies".

Abroad:

1. American company PH Mining Equipment.
2. A well-known corporation in the world is Caterpillar.
3. Marion Power Shovel Company.
4. Japanese company - Komatsu.

Excavators EKG-12.5 belong to a series of heavy equipment that is used in open-pit mines. The usable mass of the machine is 668 thousand kg. The capacity of the bucket is 12 m³. The excavator can perform work within a radius of 21 m.

Models ECG-12 and 15

Excavators EKG-12 - parameters: bucket volume varies from 12 to 16 m; scooping radius - 21 m; track length is 10.3 m; track width - 140x180 cm. Operating weight - 655/688 t; power of the network motor is 1250 kW.

Excavators EKG-15. Their bucket has been increased to a volume of 15 m³. It is used for working with rocks and overburden, loading dumps onto a railway or vehicle.

Excavators EKG-20KM. In 2022, Karelsky Okatysh JSC released its fourth excavator to increase production volumes. The bucket has been updated with new tooth mounts and side guards. A system of anchor points (safety points) was added to it to secure work carried out at height.

Excavators EKG-8I. This model is equipped with 2 buckets, with volumes of 8 and 10 m³. The electric motor power is 520 kW, the operating weight is 373 tons. The equipment remains operational on inclines up to 12º.

EKG-35 excavators are the largest domestic product assembled at the Uralmash plant. The modern model uses an AC drive, which makes the equipment economical. The machine is reliable, capable of operating at both high and low temperatures. In terms of parameters, the unit is superior to its imported counterparts. The scooping radius is 25.5 m, the loading cycle lasts 30 seconds, which increases the mining volume by 10%.

Ballancer assembled

Pumping unit

Final drive lubrication system