Productive EKG excavators are a quarry tracked vehicles used in the development and loading of minerals, rocks and mine workings. Also, the machine is operated during loading operations at transshipment bases and warehouses, and participates in cyclic production. The units are produced taking into account the peculiarities of climatic regions, they have mechanisms in the form of complete technological blocks, which makes it possible to repair equipment in an aggregate way.
Device and main mechanisms
EKG excavators are equipped with a body, a swivel frame, an arrow, a mining bucket of various sizes and caterpillars. In addition, a lower frame and a two-level rack are provided. The mining machine is made of high-strength steel, working in various climatic conditions.
The main elements of the working bucket include the front and rear walls, the bottom, side elements and rocker. The body interacts with the rest of the working parts through special fingers. The steel handle passes through the provided connecting parts into the boom, which is equipped with pressure blocks and a winch mechanism. Not only the boom is mounted on the turntable, but also the dynamics unit, circuit diagram, body parts and racks. The operator's cabin completes the exterior of the machine.
Characteristics
Below are the parameters of the technical plan that EKG excavators have:
- bucket length / width / height - 2450/2190/2560 mm with a mass of 9.9 tons;
- similar parameters of the turntable - 8100/5000/1200 mm with a weight of 18.9 tons;
- bucket volume is 5.2 cubic meters;
- height and digging radius - 10.3 / 14.5 meters;
- working weight - 196 tons;
- dimensions of the lower frame weighing 10.5 tons - 3000/3000/1680 mm;
- the same indicator for a caterpillar frame weighing 5.4 tons is 5500/750/1000 mm.
The driver's cabin weighs 1.1 tons, its length is 2.36 meters, and its width and height are 1.35 and 2.76 meters, respectively. 
The brake unit of the pressure and rotary mechanisms, as well as the winch, functions due to the compressed air flow from the compressor. Chassis equipped hydraulic system, which corrects the operation of the clutch shift of the tracks and running brakes.
Power point
The EKG mining excavator is equipped with push, lift, turn and travel mechanisms. The opening of the bucket is carried out by means of power from the engines direct current. Other auxiliary elements are powered by variable type motors. The main nodes receive energy through converting generators and step-down transformers.
most important detail that ensures the operation of the equipment is a generator motor with thyristor excitation. Its main parameters:
- transformer indicators - 160 kVA;
- the nominal power of the network unit is 800 kW, or a thousand horsepower.
The electric power plant is located at the rear of the body.
Modifications of the excavator EKG 5A
These powerful machines operated in the mining and processing industries. They greatly facilitate the work of metallurgical enterprises, coal mining facilities and the construction industry. Excavators have high rate power, dynamic control and high maintainability.
In addition to the 5A ECG model, there are several similar variations that differ in insignificant indicators:
- Modification 5V has a power plant with a capacity of two hundred and fifty kilowatts. Able to work on the breed without holding pre-training, equipped with a specific bucket with hammers instead of traditional teeth.
- Option 5D - a mining crawler excavator, the parameters of which are similar to previous model. It differs only in the presence of a combined diesel engine and an electric motor. He is able to independently load into dump trucks.
- 5U - powerful maneuverable equipment capable of passing trenches, processing ledges, producing loading operations. The excavator is equipped with a comfortable work cabin with excellent visibility and informative management.
- Model EKG-4.6 A. The first machines of this category were produced at Uralmash. They are still successfully operating, equipped with a 5.2 cubic meter bucket and a 250 kW motor.
Excavator EKG-10
Among design features The following points should be highlighted in this series:
- bucket lifting has automatic stabilization of efforts;
- equipment is equipped with a winch with lifting boom, facilitating the repair and maintenance of the unit;
- brake system of the main units - shoe type with pneumatics;
- ladle of welded-cast design, equipped with wedge fixation of teeth;
- the bottom of the free-falling element excludes dynamic contact with the handle;
- rack pressure system includes an all-welded boom and a handle with a pair of beams;
- this design improves the processing of hard rock;
- special ventilation devices create high air pressure in the body;
- The main parts of the machine are made of alloy steel.
Reduce preventive and maintenance costs efficient system automatic lubrication.
Advantages
EKG excavators are equipped with a two-track undercarriage with a separate drive for each track. This makes it possible to obtain a low-support course of equipment, which increases the maintainability of the assembly and the adjustment of the tension of the tracks. Embedded hydraulic cylinders and forced ventilation contribute to additional dynamics during the operation of the unit. The main mechanisms of the excavator are equipped with a personal adjustable electric drive.
The cabin of the device has comfortable equipment. It provides noise and dust insulation in the form of special partitions. Also workplace equipped with air conditioning, has a decent internal area and heating system. The stationary control panel allows you to quickly adjust the operator's seat. The features of this technique include the absence of a gearbox, as a result of which the movement is carried out in one high-speed mode.
Series 8I
EKG excavator, specifications which we will consider further, is equipped with an electric motor with a capacity of five hundred and twenty kilowatts. The mass of this huge equipment is 373 tons. The machine is capable of climbing over ten degrees, maintaining all operating parameters.
An upgraded version of this series is an excavator under the symbol EKG-8-US. It is equipped with a longer boom, works on benches and at high heights, and is also adapted for loading products onto dump trucks and railway wagons. The machine has a bucket capacity of 10 cubic meters. m, can lift loads weighing up to 110 tons. The unit differs in reliability, stability and good maneuverability.
Finally
The types of EKG excavators, which were briefly discussed in our article, are in demand throughout the post-Soviet space and abroad. This is due to their adaptability to various climatic regions, high performance and good technical parameters. Such machines are especially in demand for various kinds of quarry workings in difficult areas and regions with a harsh climate. The presence of many developed modifications allows you to choose a device that will optimally match the features of the work performed and the needs of the customer.
New Izhora cars
In mid-October in St. Petersburg, at the round table "Mining equipment of OMZ Corporation - an effective solution for your business", Izhora Plant (United Machine Building Plants - OMZ, Uralmash-Izhora Group) presented a new line of mining shovels, so far only planned for production. At mining enterprises in the CIS countries and abroad, specialists are well acquainted with the plant's products.
We are talking primarily about EKG-8I and modifications, as well as EKG-12.5. Since the late 1980s, the plant has delivered a large number of EKG-10 and EKG-15 and their modifications, and the production of new machines was a logical consequence of the modernization of outdated models. Main distinctive features Izhora mechanical shovels were and still are a two-section articulated boom, a torsionally unloaded handle of a round section, a rope pressure. For a long period of time, the Izhora plant adhered to the idea of producing two basic models of excavators and their modifications with extended working equipment. New line already includes three basic models, and each can be performed with different options working equipment, i.e. according to the classical scheme of the Izhora plant with a cable pressure and an articulated two-section boom, as well as a rack and pinion pressure with a two-beam handle and a solid boom. It should be noted that such a concept is quite bold.
What's on the market?
If we compare the products of the main competitors and world leaders in the industry, Bucyrus and P&H, we can note the following. Bucyrus also offers mechanical shovels in both rope and rack pressure. This separation of designs was largely a consequence of the merger of Marion and Bucyrus. However, the latter produces models without variation in performance.
Light models are available with rack and pinion pressure, heavy models with rope and toggle pressure. P&H produces mechanical shovels only with rack and pinion pressure. Of course, the issue of installing various working equipment on the base model can be attributed to the category of completely solvable design problems. The fact is that at the mining enterprises themselves there are supporters of each type of working equipment.
Uralmash, also part of OMZ, continues to produce the EKG-5A, which is still in great demand, and these machines, along with the EKG-4.6B and EKG-8I, make up the bulk of the excavator equipment in the post-Soviet space. The plant also offers a relatively new perspective model EKG-12 (14) with rack and pinion pressure and is ready to supply the already well-known EKG-20A. The rigid two-beam handle of the Ural excavators is well suited for the development of heavy rock faces with large pieces of blasted rock mass. Possible various modifications: use of built-in air percussion bucket teeth, installation of extended working equipment, installation of a diesel prime mover.
Previously, Uralmash and Izhora Plant did not overlap their model ranges in terms of standard sizes. How will OMZ management build joint work both factories is not yet known. It is quite possible that the factories will become fiercely competitive in the market in the near future.
The names of models of excavators of the new line of the Izhora plant are linked to the carrying capacity of BelAZ dump trucks (136 tons, 220 and 320 tons), in combination with which these excavators can work most efficiently, i.e. EKG-136 (bucket 18 ... 20 m 3) , EKG-220 (ladle 30...35 m3), EKG-320 (ladle 40...45 m3). In the future line there are no machines with a standard size of 10...12 m 3 , which may result in the loss of a rather tangible market segment for the plant.
While there is no way to evaluate the design innovations of these machines, much is still at the development stage. It is possible that factories use whole line innovative solutions, including the electric drive. There would only be a buyer.
Well, what can Uralmashzavod and Izhora Plant offer today as a replacement for a huge number of worn out and outdated EKG-4.6B, EKG-5A? As you can see, very little. This is the same Ural "old man" EKG-5A. And if the Izhora Plant switches to the production of a new line of heavy machines, then only one Ural EKG-12 will replace the EKG-8I and EKG-10. But this is all among mechanical shovels. At present, hydraulic technology cannot be ignored.
Mechanical or hydraulic?
Despite tangible progress in the creation of powerful hydraulic excavators, the proportion of powerful mechanical shovels with buckets with a capacity of 10 ... 15 m 3 is still quite high. mining. Moreover, in this class, powerful mechanical shovels successfully compete with hydraulic excavators. There are several reasons for this. In general, the mining industry is quite conservative, and the introduction new technology occurs quickly only in the case of a tangible increase in the efficiency of mining operations. A mechanical shovel is still a more reliable and durable machine, it is easier and cheaper to maintain. In relation to large long-term quarries with developed electrical networks, where the mining and geological situation does not require selective excavation at the level of one horizon, mechanical shovels are best suited. In turn, in difficult mining and geological conditions, a hydraulic excavator is more preferable as it is technologically more flexible. The mass of the hydraulic excavator is less, it can be equipped with both a “forward shovel” and a “reverse shovel”, it is endowed with a higher power density, is mobile, and allows for high-quality selective excavation.
Certainly, constructive scheme You can’t call a mechanical shovel progressive, and there are simply no other advantages for obsolete equipment over modern hydraulic technology, except for simplicity and reliability. Moreover, the continuous improvement of the reliability of hydroelectric units, the introduction electronic systems control of operating parameters, a more accessible aggregate layout of equipment will allow you to create machines that are comparable in reliability to mechanical shovels.
The cost of new machines is largely determined by the price of raw materials, i.e., in our case, the price of ferrous and non-ferrous metals. And when a domestic mechanical shovel has an average weight of 40 ... 60% higher than that of a hydraulic excavator with a base bucket of the same capacity, hydraulics already have a price advantage. All this leads to a massive displacement of mechanical shovels in the class of mining excavators with a base bucket with a capacity of up to 10 m3, especially in open pits. Such rearmament is a completely natural process.
This trend is observed all over the world, including the entire former post-Soviet space. Some mining enterprises have already abandoned the EKG-5A and EKG-8I and successfully operate hydraulic excavators with a working weight of up to 100 ... 120 tons. this class already established by many well-known manufacturers, including at enterprises that have not previously produced heavy excavation equipment.
| Parameter | "Straight Shovel" | "Backhoe" |
|---|---|---|
| Bucket capacity, m 3 | 4...7 | 3...6 |
| Digging radius, m | 9,9 | 15,1 |
| Digging height, m | 11,3 | 14,5 |
| Unloading height, m | 9,45 | 8,2 |
| Breakout force, kN | 640 | 640 |
| Speed on a dense horizontal track, km/h | 2,5 | 2,5 |
| Average specific ground pressure during movement, kPa | 178 | 178 |
| Pressure in the hydraulic system, MPa | 32 | 32 |
| Diesel plant power, kW | 450 | 450 |
| Climbability, hail | ≤20 | ≤20 |
| Estimated cycle time, s, when rotated by 90° | 25 | 25 |
| Operating weight of the excavator, t | 105 | 105 |
Hydraulics!
In December last year, the Voronezh Excavator Plant, which is part of Russo-Balt Tyazheks OJSC, presented a DGE-1200 hydraulic excavator with an operating weight of 116 tons, equipped with units well-known firms. This is a Cummins KTTA-19-C700 diesel engine with a power of 684 hp, hydraulic motors and Rextron planetary gearboxes that make up the elements of the drive control system imported production etc. The excavator is equipped with a modern comfortable cabin with an air conditioning system. In the future, it is planned to create a line of excavators with buckets with a capacity of 4, 6, 10, 16, 22, 32 m3. This machine has already been discussed on the pages of many specialized magazines, including with specific suggestions for improving the design, and therefore we restrict ourselves to presenting the main operating parameters DGE-1200.
| Parameter | "Straight Shovel" | "Backhoe" |
|---|---|---|
| Operating weight, t 3 | 116 | 116 |
| Bucket capacity, m 3 , with rock mass density over 2.5 t/m 3 | 4 | 4 |
| The same, m 3, with a rock mass density of 1.8 ... 2.5 t / m 3 | 6 | 6 |
| The same, m 3, with a rock mass density of less than 1.8 t / m 3 | 8 | 8 |
| Drive power, kW | 503 | 503 |
| Travel speed, km/h | 0...0,3 | 0...0,3 |
| Gradeability, % | 80 | 80 |
| Traction effort of the course, kN | 628 | 628 |
| Average ground pressure, kPa, with a track width of 710 mm | 120 | 120 |
| The same, kPa, with a track width of 960 mm | 160 | 160 |
| Breakaway force when digging by turning the handle, kN | – | 500 |
| Break-out force when digging by turning the bucket, kN | 670 | 450 |
| Feed force when digging by turning the handle and bucket, kN | 700 | – |
Taking into account the current situation in the mining industry, Izhora Plant, in turn, offers the EG-110 hydraulic excavator with a multi-support caterpillar drive tractor type(D 355 Komatsu) and rigid suspension of road wheels. Track rollers and track chain joints do not require lubrication during the entire service life. As power plant used diesel engine YaMZ-850 ( diesel plant YaSU-500V with a power of 450 kW, rotation speed 1800 min -1), the pumping unit consists of four adjustable axial piston pumps and one auxiliary gear pump.
Hydraulic units and equipment - manufactured by Rexroth, heat exchanger - by Hydac International, hydraulic cylinders - manufactured by Lyudinovsky Aggregate Plant. The three-row slewing ring with external gear teeth is manufactured by Avtokran (Ivanovo). Automated lubrication system - German company Lincoln. The modern cabin is from the Kovrov excavator plant. All welded metal structures - frames, boom, handle, bucket - are produced at the plant itself and are made of steel grade 10KhSND with vibration and heat treatment of prefabricated elements. In the design of the bucket, elements made of wear-resistant steel 110G13L and 20KhGSR are used, i.e., materials are well known from the same ECG.
| Manufacturer, model | Bucket capacity, m 3 |
|---|---|
| P&H Electric Shovels | |
| 1900AL | 7,6...19,1 |
| 2300XPC | 19,1...36,7 |
| 2800XPC | 25,2...53,5 |
| 4100C | 30,6...61,2 |
| 4100/LR (extended equipment) | 25,2...53,5 |
| 5100XPB | 35,9...76,5 |
| Bucyrus | |
| 182 | 5,7...17,6 |
| 201 | 18,48...39,27 |
| 495 | 26,8...61,2 |
| 795 | 53,5...68,8 |
| A promising line of the Izhora plant | |
| EKG-136 | 18...20 |
| EKG-220 | 30...35 |
| EKG-320 | 40...55 |
| Uralmashzavod, machines mastered for serial production | |
| EKG-5A | 4,6...6,3 |
| EKG-12 | 12...16 |
| EKG-20A | 16...25 |
The openness of the EG-110 turntable attracts attention, i.e. the casing covers only the power station and the main pumps. Still, it would be more expedient for mountainous conditions to completely cover the engine room with a body in order to facilitate maintenance and ensure better protection equipment from external influences. So, for example, a turntable of 120-ton excavators Hitachi, Komatsu or Voronezh DGE-1200 is equipped. It is also interesting why it was decided to place both motor-reducers of rotation on the EG-110 side by side. Since a double drive is already used, it is better to arrange the geared motors in a symmetrical pattern and at a distance from one another, so that once again do not concentrate the load on the metal structures of the turntable. However, all these comments can be attributed to the usual "growth problems" that accompany the introduction of any new technology.
Both factories have chosen a similar tactic for the production of hydraulic excavators - the use of high-tech components (hydraulic units) from recognized world leaders. The advantage of the Voronezh workers is their extensive experience in the production of hydraulic machines. The advantage of the Izhora plant and Uralmash is a good acquaintance with the specifics of the operation of machines in mining, knowledge of the industry. The disadvantages of manufacturers are the lack of approbation of this technique, the lack of confidence in it. Earning the trust of the miners is quite difficult, it is a difficult task, including for the marketing services of manufacturers.
Many people remember the first samples of EG-20, EG-12 and EGO-4 manufactured by UZTM (Uralmashzavod is ready to offer these models to the customer even today under the indices EG-550, EG-350, EG-150) and the first controversial experience of domestic hydraulics. But everything is changing, and today it is possible to purchase high-quality components for high-tech hydraulic and electronic equipment, leaving engineering and assembly for your own plant.
The issues of improving the quality of excavator metal structures are quite solvable, especially considering the potential of large machine-building plants. To some extent, they managed to keep the old design personnel, young design engineers who are able to work with modern computer technology design. Improving the quality of the final product can be achieved even at the design stage, which is facilitated by the introduction of new electronic calculation methods. The process of modernization of production begins, the machine park is updated. This is especially noticeable at the Izhora plant.
Today, a very favorable period begins for excavator engineering: the growth of mining production throughout the CIS, with the need to replace a huge fleet of outdated and worn-out excavation equipment. It is clear that our excavator plants today are not able to meet the sharply increasing demand for modern excavator equipment in quarries, but we cannot but use such times to develop production. It is important to properly conduct a marketing policy for promotion the latest equipment and running it in quarries, use flexible sales schemes.
Mining excavator - large earthmoving equipment, equipped with a bowl-shaped container with teeth. The spectrum of its purpose:
- extraction of minerals from massifs;
- development and opening of soils;
- unloading bulk materials.
This unit is a self-propelled mining machine designed for intensive operation in open areas and under any spatial and climatic factors.
Also used in quarries mining trucks. Rating of the largest of them -
Equipment of this type consists of three basic parts - working, running and power. Its design includes - a body with a turntable, an arrow with a movable bucket, a lower movable frame.
It can move along ledges and uneven surfaces, be equipped with individual electric drives, and be additionally unified by control and safety systems. Look at the photo:
Main functions - penetration into the soil, scooping up earthen rocks with their subsequent laying in a dump or loading into a vehicle (see backhoe loaders).
Scope of application:
- road and main construction,
- ferrous and non-ferrous metallurgy,
- coal industry,
- development of ore deposits.
In the same place where the necessary small, spot work, mini excavators are used. Read about Russian models Can
Classification of excavators - characteristics of models
The presented machines differ from each other in running gear, the nature of attachments, the types of engine used. They are divided into the following modifications:
Crawler Excavator (EKG)
Single-bucket technique of cyclic action. The method of movement is a caterpillar chassis. Drive type - electromechanical or diesel. Bucket capacity - up to 50 cubic meters. m.
More detailed information you can get in the video below:
Usage:
- development of soils of 1-4 categories,
- digging sandy loam, clay and sand,
- scooping up ruined ores,
- rubble mound,
- digging foundation pits industrial buildings and agricultural buildings.
Advantages:
- maneuverability,
- no heavy load on the soil cover,
- Ease of Management,
- high performance,
- fuel economy.
Minsk plant Belaz specializes in the production large dump trucks. You can read more about the plant.
Bucket wheel excavator (EKR)
This is a bucket loader continuous action . The method of movement is caterpillar or rail-walking. Drive type - mechanical or combined. Feature - the presence of a rotary wheel on the boom. Bucket capacity - up to 12.500 liters.
Usage:
- opening trenches for pipeline communications,
- mining of coal of small and medium strength,
- removal of rock masses to the dump,
- excavation of various layers of minerals,
- channel development,
- pit contouring.
Advantages:
- course stability,
- the possibility of transverse and radial digging,
- efficiency in the same type of operations, concentrated on extended areas;
Hydraulic excavator (EKGV)
It is a universal equipment with one front tipping or jaw bucket, all elements of which are driven by hydraulic cylinders and pumps high pressure. Chassis - caterpillar tape. Bucket capacity - up to 50 cubic meters. m. Read also about hydraulic excavators 
Usage:
- digging ditches and pits with sheer walls,
- cleaning operations in pits,
- loading of small-sized materials,
- construction operations in the civil and industrial field,
- cleaning of rocky soils.
Advantages:
- high level of operational reliability,
- environmental Safety,
- possibility of use in cramped conditions,
- stepless speed control.
ECG Model 15
Among the Russian assortment, attention should be paid to EKG model 15, designed for the development of overburden - rocks covering mineral deposits from above: they can be represented by peat, clay, chalk and quartz layers. 
EKG-15 This technique is also used for the purpose of dumping, driving wide cutting trenches, loading rocks into railway and road transport.
Technical specifications:
- working weight - 672 tons,
- bucket capacity - 15 cubic meters. m.,
- boom length - 18 m,
- digging height - 16.4 m,
- digging radius - 22.6 m.
Career transport - features of choice
The modern excavator is one of the main means of mechanization used in large-scale earthworks
. Its operational location is work zone open working. 
Quarry transport The advancement of the front of work, the basic indicator of the intensity of field development, directly depends on the quarry excavator. And on the quantity and quality of the extracted raw materials, in turn, - the level of supplies of ore and non-metallic composites to the Russian market.
The choice of a mining excavator should be carried out taking into account:
- expected operating conditions;
- production capacity;
- number of buckets.
Crawler excavators – best option for mining operations on soils with low bearing capacity. These earthmoving units will overcome all obstacles on the way due to the wide propulsion and even distribution own weight along the surface. An example of a crawler excavator is.
Pneumatic wheeled excavators - an alternative version in the form of compact and mobile machines, which are designed for rapid movement around the facility, including between dense buildings in an urban environment. They do not leave behind cracks and dents, do not deform the ground, do not cause damage road surfaces. Example wheeled excavator -
Mining excavators - time-tested dredging technologies!
Crawler mining excavator belongs to the class of large earthmoving equipment and is used in open pit mining. Since one of the most common methods of mining is open way, such a technique is designed specifically for work in quarries where they are being developed. A quarry excavator moves along the ledges of a quarry due to the presence of a caterpillar, and the rock is directly digged with a bucket. Also, the machine carries out the movement of the resulting rock along the horizontal plane of the ledge and loading onto the appropriate transport for its further transportation.
Mining excavator device
The design of a quarry excavator consists of the following elements: a body, a turntable, a handle, an arrow, a bucket, a lower frame, caterpillar frames, a two-legged stand. All elements are made of high-strength steel, which allows the machine to work in all weather conditions and air temperatures from -40 to 45 degrees. The bucket has a special bottom braking mechanism that minimizes vibrations and prevents the bottom from hitting the body or bucket handle. The use of a leveling block in the bucket suspension reduces the load on the boom during operation. The endurance of the handle of a mining excavator is increased by reinforcing the beam of the handle with semi-blocks fixed to it.
Classification of mining excavators
Mining crawler excavators are usually classified according to the number of tracks: two-, four- and eight-track excavators. Equipment designed for, must meet a number of requirements, since the amount of work performed directly depends on performance indicators, reliability, etc. The level of performance of a mining excavator is primarily affected by the size of the bucket, which in some models reaches 50 cubic meters. The larger the volume of the bucket, the faster the loading of vehicles with the worked out rock. Various length booms (up to 55 m) and sticks provide different possibilities for the development of vertical walls of a quarry. The digging height can be up to 20.7 m, and the digging radius can be up to 24.4 m. The bucket of almost any mining excavator can be in two positions: “forward shovel” and “backhoe”. One of the main suppliers of mining excavators is Cat. very popular due to their reliability and performance.
Operation of mining excavators
Working conditions in a quarry make it necessary to use a crawler excavator almost constantly throughout the year. However, the fact of the high cost of such equipment often affects the inability to use a large number of machines in a quarry. In this regard, increased requirements for reliability mining equipment absolutely justified, as they allow you to reduce downtime for a while Maintenance machines. An analysis of the scope of mining excavators and consumer requirements forces manufacturing companies to constantly improve their models. Changes are usually about improving the system hydraulic drive, power units and devices that provide smooth operation technology. Each mechanism of a mining excavator is a complete technological unit, which makes it possible to use aggregate method repair in the event of a machine failure. By the way, it often works in pairs with this type of excavator
To work in a quarry crawler excavator invite specially trained operators who are highly qualified and familiar with the specifics of the work process. Staff training is quite expensive for the company, which affects the presence of a minimum number of mining excavator operators in the state. Since the negative impact of atmospheric conditions can lead to illness of the operator, and, accordingly, to equipment downtime, manufacturers equip all modern models special excavators climatic equipment. Regardless weather conditions being in the car is quite comfortable.
January 22, 2015 March 3, 2017
ECG excavators are a collective concept for a certain class of machines. The abbreviation "EKG" is formed from the words "excavator", "quarry", "caterpillar". On domestic market There are several manufacturers of such equipment, each of which produces certain models of machines.
ECG excavators: application
Excavator equipment is used to develop quarries and soils of various categories. The main field of application of the machines is the mining industry. Here, ECG perform work on the development, opening of rocks and minerals with their subsequent loading into transport equipment or a dump.
ECG excavators: the entire range
EKG mining excavators are produced with buckets from 4 to 46 m3. The bulk of the modifications are produced by the URALMASH plant. By the designation of the model of technology, you can find out about it key features. So, the figure after the abbreviation "ECG" indicates the volume of the bucket. Letter index after the number indicates special appointment technology or the manufacturer.
ECG excavators with bucket volume from 4 m3 to 6 m3
Among Russian consumers most widespread received cars from the URALMASH plant. ECG excavators of this manufacturer are available in a wide range of model line. Equipment with buckets from 4 to 6 m3 has become especially popular. First of all, you should pay attention to the model of the EKG-4.6A excavator. He became the progenitor of the entire line of URALMASH electric full-turn machines.
The equipment was produced from 1965 to 1967. The EKG-4.6A was replaced by the updated EKG-4.6B excavator, which occupied the plant's conveyor from 1967 to the 70s. The need to modernize the line led to the release of EKG-5A excavators. In 1980, the first machine entered the market.
Are issued and now. Experts did not find significant constructive changes in the updated model. The classic design of URALMASH machines assumed the presence of:
- two-beam handle;
- rack pressure;
- two-track drive with separate drive for each track;
- standard straight shovel equipment.
Excavators EKG-5A received a bucket with a volume of 5.2 m3 and the possibility of equipping other working equipment with a volume of up to 7 m3. The equipment was intended for the development of rocks and overburden, as well as rocks previously loosened by an explosion.
With separate drive to both tracks, heavy equipment with an operating weight of 196,000 kg can turn with the smallest radius and stay in place when working on slopes. The factory engine of EKG-5A excavators produces 250 kW of power.
Particularly noteworthy are the modifications of the popular model EKG - excavators EKG-5US, EKG-5V, EKG-5D and EKG-5U.
- The excavator EKG-5US is equipped with electric motor with a power of 250 kW;
- The EKG-5V excavator was specially designed for the development of rock formations without preliminary drilling and explosion. The machine is equipped with a bucket with hammers instead of teeth. This allows you to effectively use it for the conditions provided by the plant;
- The EKG-5D excavator is equipped, unlike its counterparts, with a diesel-electric motor and is intended for loading rocks on vehicles after development;
- The EKG-5U excavator is equipped with an independent lower travel drive. The machine is used for trenching, working out ledges, loading soils to a height above the supporting surface.
One of the modifications model range EKG-12.5 became the machine EKG-6.3U. The equipment is equipped with a bucket with a capacity of 6 m3 and is intended for loading rocks at a level above the excavator parking lot.
ECG excavators with bucket capacity 8-10 m3
There is only one model in the EKG-8 excavator group - EKG-8I. The machine is equipped with two buckets:
- bucket for heavy loads with a volume of 8 m3;
- bucket for medium loads with a volume of 10 m3.
It is equipped with an electric motor with a power of 520 kW and has an operating weight of 373 tons. A heavy machine can climb slopes up to 12 degrees while maintaining performance.
Another excavator EKG-8 marked US is a modification of the later version EKG-10. The machine is equipped with an extended boom for loading rock at the parking level. transport technology. EKG-8US is also designed for working out ledges high altitude and to move railroad tracks.
Excavators of the EKG-10 series are equipped with buckets with a volume of 10 m3. The main line includes three modifications:
Is basic model and is produced for the development of rocks in open pits with their subsequent loading into vehicles. The EKG-10R modification is equipped with an 8 m3 bucket and differs from the basic version in increased lifting force. Here the figure is 110 tons.
The version of the EKG-10M excavator is equipped with a wide bucket with a capacity of 11.5 m3. The main purpose of the technique is the development of coal mines. To do this, the manufacturer has provided a special design of the working equipment for its better filling.
12-18 series excavators
The line of extra heavy EKG machines starts with the EKG-12.5 excavator. The equipment was intended for the development of open pits and was equipped with an independent bottom drive. The operating weight of the machine is 668,000 kg. The volume of a standard bucket is 12 m3. The equipment can develop rocks within a radius of 21 meters at the level of the parking lot.
The EKG-15 excavator is a natural continuation of the line with an enlarged bucket and improved performance indicators. Basic version EKG-15 is designed to work with rocks and overburden, the formation of dumps and the loading of fossils onto road and rail transport. Excavators EKG-15 are equipped with buckets with a capacity of 15 m3.
Based on the EKG-15, a modified EKG-18 was created. The excavator received an increased lifting force. The indicator reached 170 tons against 150 tons for EKG-15. Also, the technique could boast of 85 tons of pressure force against 65 tons of its predecessor. The bucket capacity of the updated model has reached 20 m3, and the operating weight is 800,000 kg.
20 Series Excavators
Excavators EKG-20 went down in history as the most powerful tracked mining excavators domestic production. The machines are equipped with 20 m3 buckets and are designed to work in especially difficult conditions. The technique is used to develop rocks at temperatures up to -50 degrees. The power of the network motor of EKG-20 excavators reached 2250 kW. The working weight of the machine is 1050 tons.
Because the tracked vehicles of domestic production are distinguished by impressive durability, the issue of repairing EKG excavators is acute. Equipment manufactured in 1983 and earlier still works in production. You can buy spare parts for EKG excavators from individuals and specialized companies.
ECG excavators exemplify "forever" Soviet technology. Since the introduction of the first machine in 1965, little has changed in the design of the ECG. All modifications that have survived to this day have retained their performance characteristics and almost pristine device.
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