TVEX crawler excavators with a rotary platform

For questions regarding the purchase of this equipment (TVEX ET-25 crawler excavator), terms of credit and leasing, service and warranty, please contact the plant’s dealers or official representative offices. The TVEX ET-25 crawler excavator can be supplied either directly from the manufacturer or from sites in Moscow and other regions of the Russian Federation.

Tver Excavator Plant

Historical background: Tver Excavator Plant, formerly Kalinin Excavator Plant, located in Tver, was founded in 1943 and was initially engaged in the production of consumer goods.
In 1949, the first prototype of a universal pneumatic excavator was designed, serial production of which began in 1951. In 1971, the production of hydraulic excavators was mastered, the technical characteristics of which were improved for a long time and until 2001, the EO-3323A excavator model was the main one in the nomenclature list. The 50,000th excavator produced in 1981 was awarded the Order of the Red Banner of Labor. In 1993, during the privatization process, the plant was reorganized into OJSC Tver Excavator Plant. In 2001, the company became part of the GAZ Group holding and began producing modern, economical models of excavators. Specification: production of pneumatic wheeled excavators, truck-mounted excavators, forklifts and front-end loaders.

Model range: Pneumatic wheeled excavators of the Tver Excavator Plant are intended for use in construction and public works. The pneumatic wheeled excavator of the second size group EK-8 and its modifications EK-8-20/30 are equipped with a bucket with a volume of 0.31 to 0.32 m3 and are powered by Perkins, Perkins 1104C-44 engines with a power of 83 hp.

The pneumatic wheeled excavator EK-12/10/20/24/30/40 is equipped with a bucket with a capacity of 0.4 to 0.65 m3. The power equipment of the City class excavator model EK-12/10/20/24/30/40 consists of a Perkins/Perkins 1104C-44 engine (power 83 hp), an MMZ-243 engine (power 81 hp). ). The pneumatic wheeled excavator EK-12/10/20/24/30/40, depending on the modification, can be equipped with either a boom with variable geometry, or a two-section or monoblock boom.

The pneumatic wheeled excavator EK-14 and its modifications EK-14-20/21/22/24/25/26/30/60 are used for excavation work when constructing pits and trenches, as well as when digging quarries. The EK-14 excavator, depending on its modification, is equipped with a bucket with a volume of 0.4 to 0.65 m3 and Perkins/Perkins 1104C-44 engines (power 123 hp), MMZ-245 (power 105 hp).

For excavation work, a pneumatic wheeled excavator EK-18 and its modifications are provided, equipped with a bucket with a capacity of 0.77 to 1.0 m3 and engines Perkins/Perkins 1104C-44 (power up to 123 hp) and MMZ-245 (105 l .With.).

On the basis of the URAL-5557 chassis, an EA-17 single-bucket excavator is installed, which is used for excavation work. The EA-17 excavator has a bucket with a volume of up to 0.65 m3 and is powered by Perkins (83 hp) and MMZ-243 (81 hp) engines.

The EK-18-45 pneumatic wheeled excavator model is designed to perform special work (loading and unloading bulk products, logs, etc.) and is equipped with a Perkins engine with a power of up to 123 hp.

The Tver Excavator Plant also produces loader models. The V-125 front loader is used for loading bulk and lump materials, has a bucket with a capacity of up to 1.5 m3 with a nominal load capacity of 2.5 tons. The V-125 loader is equipped with a six-cylinder diesel engine D-245S with a power of 107 hp.

For work at industrial enterprises and warehouses, a VP-05 forklift with a nominal load capacity of up to 5 tons can be used.

The B-138 front-end loader is used when loading bulk materials, as well as when carrying out excavation work. The V-138 front loader has a capacity of up to 2.1 m3 with a load capacity of 3.8 tons and is equipped with a YaMZ-236M2 engine with a power of up to 132 hp. The V-160 front loader has a more spacious bucket, a capacity of 3.4 m3 and an increased load capacity of 6.2 tons. The V-160 front loader is equipped with a YaMZ-238M2 engine (power 176 hp) or a Cummins 6CT8.3-C215 unit (power 158 hp).

The TO-40 front loader with a lifting capacity of up to 7.4 tons and a bucket capacity of up to 4.15 m3 is widely used on construction sites, industrial sites and warehouses, ports and quarries. The power equipment of the TO-40 loader consists of a YaMZ-238M2 engine with a power of 176 hp. or Cummins 6CT8.3-C260 with 190 hp.

The current stage: currently the Tver Excavator Plant is called Tver Excavator OJSC. The company occupies one of the leading positions in the production of excavator models and is the only plant in the country where they began to master the conveyor production of excavator models. The plant's products are supplied to many construction sites in Russia and also find buyers abroad.

Fines for not having a fire extinguisher

If during the fire inspection a violation of fire safety and the absence of a fire extinguisher is discovered, a fine will be imposed on the head of the enterprise. The amounts of administrative penalties are as follows:

• 2,000–3,000 rubles for individuals;
• 6,000–15,000 rubles for officials;
• 20,000–30,000 rubles for individual entrepreneurs;
• 150,000–200,000 rubles for legal entities.

Attention! For repeated offenses, the fine increases.

Excavator grab

Construction machines and equipment, reference book

Category:

Excavator operation

The grab is used for developing soils located below and above the excavator parking level, for loading and unloading bulk materials, as well as for some types of excavation work in soft soils (digging deep pits, cleaning ponds and canals).

The grab works as follows. When the closing rope is loosened, the grab is held by a support rope attached to the upper head of the grab. The lower head, under the influence of its own weight, lowers along with the lower blocks of the closing rope pulley mounted on it and the hinged jaws.

Rice. 25. Suspension of an oblique dragline bucket: 1 — bucket body, 2 — bucket visor, 3 — traction chain loops, 4 — traction chain eyes, 5 — tipping rope, 6 — tipping rope block cage, 7 — lifting rope, 3 — lifting chains , 9 — rings, 10 — tilting pipes

Cassock. 26. Diagram of a grab suspended on an excavator: 1 - grab. 2— outhaul rope, 3— boom, 4— outhaul rope blocks, 5— outhaul weight. 6 - closing rope, 7 - supporting rope, 8 - closing rope drum, 9 - supporting rope drum, 10 - upper head, 11 - rods, 12 - lower blocks of the closing rope pulley, 13 - lower head, 14 - jaws; I—IV — grab positions

When the lower head is lowered, the jaws open, turning relative to rigid rods, hinged at the lower ends on the jaws, and at the upper ends on the upper head (position I). In this position, the bucket is lowered onto the ground or other material being grabbed so quickly that the teeth of the jaws cut into the material. Then the supporting rope is loosened and the closing rope is wound onto the drum. At the same time, the lower and upper heads of the grab are pulled together, and the jaws close, crashing into the ground and grabbing it (position II).

After closing the jaws, the grapple filled with soil is lifted on the closing rope. At the same time, the drum is set in motion to select the support rope at the same speed (position III). When the platform with the boom is turned to the unloading site, the supporting rope drum is braked, and the closing rope 6 is weakened, which leads to the lowering of the lower head with the jaws and to the unloading of the grab (position IV).

Unloading can be done at any height using the indicated method or by braking the drum while further winding the supporting rope onto the drum.

After unloading, the grab is turned back to the mining site and the cycle is repeated.

To prevent twisting of the ropes and significant swinging of the grab when turning the platform, a pull-out device called a damper is used. It acts on the grab bucket with a pull rope. The constant tension of the rope 2, independent of the position of the grab, is created by the weight of the load moving inside the boom along the guides, to which the rope bending around the blocks is attached.

On some excavator cranes, for this purpose they use the mechanism described below for opening the bottom of the bucket, on the drum of which a rope is attached.

The grab is equipped with a dragline lattice boom.

In addition to the two-jaw grab, there are grabs with a large number of jaws; the number and shape of the jaws depend on the type of material being handled. However, the principle diagram of their operation does not differ from the diagram of a double-jaw grab.

The disadvantage of a grab suspended on ropes is that it is impossible for them to develop dense soils: the weight of the grab is not enough to crash into the ground. Grabs are made of three types: light, medium and heavy, and the weight of the grapple used should be greater, the denser the soil. However, the heavier the grab, the less soil it can lift for a given excavator-crane stability. Consequently, the productivity of the equipment decreases.

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Some foreign companies produce rigidly suspended grabs, which are mounted on the handle of a backhoe instead of a bucket. The jaws of such a grab are closed by hydraulic cylinders driven by fluid supplied from the pump. The main advantage of a rigidly suspended grab is that it can create the necessary pressure on the ground when cutting in, that is, regardless of the weight of the grab, it can successfully develop dense soils.

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Category: — Operation of excavators

Technical characteristics of EK-14

The advantages of the EK 14 excavator are due to its excellent technical characteristics. Basic parameters:

Below we will consider the main elements of the machine and their basic parameters.

Engine

The EK 14 wheeled excavator can be equipped with the following types of motors:

D 245/243. This is a 4-cylinder 4.75-liter engine that produces 85 horsepower. Equipped with turbocharging. It has a vertical arrangement of cylinders with a diameter of 11 cm and a piston stroke of 12.5 cm. The power unit has a torque of 420 N*m.

The fuel tank capacity is 260 liters and the amount of engine oil is 16.5 liters. The maximum speed that such equipment can reach is 23 km/h. When assembled, the engine weighs 490 kg.

Perkins 1104С-44 is found in some modifications of the TVEX excavator. This is a 4-cylinder power unit with a turbocharged system, developing a power of 123 “horses” at 2200 rpm. It has a working volume of 4.4 liters. The cylinders have a diameter of 10.5 cm and a piston stroke of 12.7 cm.

The fuel tank size for this modification is 255 liters. At a certain crankshaft speed, it produces 500 N*m of torque. Equipped with a liquid cooling system. The weight of the fully equipped motor is 306 kg.

Weight, bucket volume

The TVEX EK 14 excavator weighs 13.4 tons. To date, this is the lightest option in the line under consideration. Previously, there was a wider selection of machines on sale, weighing in the range of 8-20 tons. The weight of some equipment elements also deserves special attention.

For example, a rotary platform has a mass of 5.5 tons, a 4.7 m monoblock boom weighs 1.15 tons, and a 2.2 m long handle weighs 0.6 tons. The machine uses a bucket with a volume of 0.5 to 0 .8 cubic meters.

The most commonly used option is 0.8 m3, which is of the “backhoe” type and is equipped with quick-release bits. The largest digging radius is 9.02 m, and the depth is 6.14 m. In the process of performing tasks, the bucket is capable of turning 173 degrees.

Load capacity

The TVEX EK 14 excavator has a high load capacity, which sets the machine apart from its competitors. This is due to the large capacity of the bucket (mentioned above), the reinforced metal frame structure and thoughtful fastening of the working equipment. Improved capabilities are also due to the presence of a pair of hydraulic cylinders.

Dimensions

The wheeled vehicle has a relatively small size, which allows it to perform tasks in confined spaces. Let's highlight the main parameters:

• length - 8.2 m;
• width - 2.5 m;
• height - 3.14 m;
• wheelbase - 2.8 m;
• ground clearance - 32 cm;
• track width - 2.11 m.

Of particular interest are the digging/unloading parameters. Thus, the unloading height is in the range from 5.8 to 6.72 m, the depth of the company may vary depending on the working equipment - from 4.78 to 6.14 m, and the digging radius - from 7.92 to 9.02 m .

Recharging procedure and maintenance

It is necessary to recharge and maintain the device every time after its use, when the pressure in the cylinder decreases and no later than the established deadlines. For all OPs it is 5 years.

After this time, the OP-25 must be delivered to the charging station. Maintenance includes:

• checking the readings of the pressure gauge and all other components of the device;
• replacement of spare parts;
• disassembly of the structure, analysis of the powder composition, recharging;
• entry in the logbook, operational passport, on the fire extinguisher tag with the date and results of the test.

The quarterly inspection, which is carried out at the enterprise itself by an industrial safety officer, includes:

• control of pressure gauge readings;
• external inspection for external damage;
• a note in the journal about the inspection performed.

You can carry out maintenance and refilling of cylinders from Yarpozhinvest LLC at authorized regional service centers.

On a note. One of the main confirmations of the device’s performance is the pressure indicator. If the pressure gauge needle is in the green zone, the fire extinguisher is ready for use; if it is in the yellow zone, the pressure drop is not critical; the needle within the red zone indicates a malfunction of the fire extinguisher and the need for repairs.

Area of ​​use

The EK-18 line of excavators, the technical characteristics of which are constantly being improved, is in high demand among construction companies and government organizations. This demand is justified by the fact that EK-230-06 excavators and related models combine versatility, performance and affordable cost. Today you can purchase machines not only with wheels, but also with crawler tracks (LC) for working in difficult terrain.

The EK-18-30 wheeled excavator can be used to perform the following work:

1. Construction of pits for high-rise buildings. The reach of the boom and the volume of the bucket make it possible to dig holes of large area and depth in a few hours. Excellent maneuverability makes it possible to quickly move both along the edge of the pit and inside it. Depending on the type of soil, one of the replaceable buckets is used.
2. Laying trenches of various widths and depths. The use of removable boom sections and buckets with a certain width helps to make even trenches with a width of 30 cm and a depth of up to 600 cm. The Tveks EK-18 LC excavator is successfully used when laying water pipes, sewerage, fuel lines, power and telecommunication cables. Precision boom control facilitates repair work of a high level of complexity.
3. Quarry development. EK 12 excavators have technical characteristics high enough to remove durable overburden, hard rock and frozen ground. The large capacity of the bucket allows you to fill the truck bed with sand, gravel or limestone in a matter of minutes.
4. Construction and repair of hydraulic structures. EK-18-20 excavators have proven themselves in the construction of bridges, dams and dams. Having good maneuverability and maneuverability, EK-18-60 excavators are used at all stages of construction, from excavation to leveling.
5. Utility works. Within the city limits, the EK-14 wheeled excavator is an indispensable piece of equipment. With its help, sewerage, heating mains and water supply repairs are carried out. Maneuverable equipment quickly and efficiently digs holes for sewer and communication wells.

Excavators EK-8-20 2005 are in demand among owners of dachas and country houses. Multifunctional equipment is ideal for the construction of underground structures, creating embankments, laying communications, and constructing pits for foundations.

TVEX ET-25

Let's consider the TVEX ET-25 model: main characteristics and description of the mechanism. Tver excavators of the ET-25 model are machines of the fourth size group, which are suitable for use over large areas and for performing large volumes of work. A similar technique is used to loosen soil, including frozen soil, and to crush rocks.

Other areas in which TVEX ET-25 can be used include:

• development of pits and pits;
• development of quarries and trenches;
• soil loading;
• reclamation works.

The machine moves on caterpillar tracks, which allows the equipment to work on any soil.

The advantages of this model include factors such as:

1. Stability and high performance.
2. Long service life.
3. Reliability.
4. Easy to operate and maintain.
5. Multifunctionality.
6. Convenient control panel.
7. A single cabin with a comfortable seat and compartments for storing personal belongings.

It is produced in three modifications - the TVEX ET-25-20, 25-30, 25-40 excavator.

See » Kubota K008 mini crawler excavator

The mechanism is equipped with a Perkins 1104C-44TA engine, the power of which is 175 hp, the number of revolutions is 1.7 thousand rpm.

Storage conditions and service life

The device is placed near the most fire-hazardous areas, along evacuation routes, near the exit from the premises. Storage of OP-25 requires protection from exposure to precipitation, ultraviolet rays, and mechanical damage. The temperature of storage and use of the fire extinguisher must be no lower than –50 °C and no higher than +50 °C. It is important to create good visibility, as well as unobstructed access to the device in the event of a fire.

Reference. The service life of the fire extinguisher is at least 10 years.

Replacement equipment

The working equipment is standardly equipped with an earth-moving bucket with a maximum load of up to 1 cubic meter. At the request of the customer, it can be replaced with a larger bucket and equipped with a hydraulic front blade. The boom is either monoblock or with variable geometry. It is also possible to use a variety of replaceable (attached) equipment for dismantling, destruction, and cutting. Of which, the company produces 90% independently, which additionally allows you to control quality, compatibility and prices:

• Hydrohammer – destruction of buildings, crushing of household stones and frozen soil;
• Hydraulic shears – with a full-rotary rotor for cutting concrete structures, cables and wires;
• Log grabber (load capacity up to 3000 kg) – skidding of wood at cutting sites, stacking logs, other lumber and scrap metal (can also be equipped with a full-turn rotor);
• Single-tooth hydraulic ripper – excavation work, dismantling, opening of asphalt concrete crust;
• Digging and loading grab – moving bulk materials of various consistencies.

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Modernization is the path to success.

The products of the Tver Excavator Plant are subject to constant improvements and upgrades, which allows TVEX to maintain a leading position in the market, keep up with the times and put into practice the best developments in the field of construction and earth-moving machines. Tver Excavator products are reliable products that meet all the requirements of modern construction and repair. Special equipment is developed in such a way as to make the operator’s work as convenient as possible and, as a result, increase the productivity of all operations. TVEX engineers implement progressive innovative developments, increasing the ergonomics of special equipment, improving their design and, of course, the technical characteristics themselves.

The TVEX range of earthmoving equipment includes all the equipment necessary for construction, various models of tracked and wheeled excavators. The special feature of TVEX products is their experienced characteristics. Thanks to constant improvement, engineers manage to preserve all the best features of models of previous generations, which have proven themselves well at the largest construction sites in Russian history, and optimize them to solve modern construction problems. has an excellent reputation and is proud of it, releasing only the best construction, repair and utility vehicles to the market.

Tver also produces a large number of additional attachments, which significantly expand the functionality of special vehicles. offers its customers not only additional tools from TVEX, but also spare parts for special equipment. Our assortment also includes replaceable working bodies.

History of the T-25

Initially, the T-25 tractor was developed and produced at the Kharkov Tractor Plant. The first models rolled off the assembly line in 1966. Starting in 1972, they decided to establish production in the city of Vladimir, at the Vladimir Tractor Plant. The transfer is due to the plant’s specialization in wheeled vehicles with sixth class traction. At that time, the company produced its own products, models DT-24 and T-28.

Tractor T-25 (KhTZ):

Tractor T-25

The change of registration benefited the self-propelled vehicle. The designers of the Vladimir plant began modernizing the model. A year after the transfer of capacity, in 1973, an updated configuration was released labeled tractor T 25a, which received a closed cab made of steel. Model 25a is secretly considered the base model for subsequent generations of the unit. The self-propelled gun became the pride of the plant, receiving the proud nickname “Vladimirets”.

EM-251

This is a domestic device, which consists of:

• Running and power equipment, as well as mechanisms mounted on the fixed frame of a belt conveyor, which is designed to dump soil to the side or into the vehicle body.
• Working equipment (chains with buckets) mounted on a boom frame.

The running equipment is a multi-support caterpillar. The internal combustion engine transmits rotation to the drive gears through a chain drive. The tracks have frames connected by axle shafts and a balancing device to the main frame. It turns out that the main frame rests on the tracks at three points. This allows you to achieve good maneuverability of the excavator.

When the bucket chain and the excavator itself move, a vertical trench is formed. The soil collected by the buckets goes through the bunker onto the dump conveyor. He, in turn, throws it aside.

Multi-bucket trench chain excavators EM-251 can change the position of the boom relative to the frame. It rolls along guides, which allows you to change the degree of its depth, and therefore the depth of the trench. When transporting the unit, the boom is in the upper position. The machine is controlled using a special remote control, which is located in the operator’s cabin on the right, near the gearshift lever. This allows the driver to simultaneously monitor the movement of the device and the operation of the digging mechanisms.

Chassis T-25

The movement of the tractor on the surface is ensured by a unit that connects the rear wheels of one axle. The front axle makes the product stable and also changes the direction of movement of the drive wheels. Technically, the complex of front chassis components consists of:

• Self-propelled units;
• Self-propelled gun lever systems;
• The rotating hub base on which the wheel is mounted;
• Self-propelled axles;
• Self-propelled counterweight;
• Self-propelled vehicle wheel hub.

It is possible to adjust the size of the transverse distance between the centers of the tire print on the road. For this purpose, steering knuckles are used. By rearranging the cylindrical fastener into the provided holes, the size of the transverse distance of the print changes. The rear axle is adjusted by turning a disk mounted on racks attached to the wheel rim from the inside.

Rotary trench excavators

Rotary excavators continuously excavate soil and move it along the work front without stopping or turning off the unit. Soil is cut using the teeth or edges of buckets on the excavator rotor, and it is unloaded onto a continuously rotating conveyor, from where the soil is dumped into a dump. The conveyor is located on one side, usually the left, along the path of the excavator.

Rotary excavators used in the construction of main pipelines are capable of digging a trench up to 2.5 m deep and up to 2.4 m wide.

Rotary trench excavators develop trenches with rectangular and trapezoidal profiles. To give the trench walls slopes, special slopes are installed on the working part of the excavator.

Rotary excavators are capable of developing soils frozen to a depth of 1-1.5 m, and ETR-254 excavators are capable of digging to the entire digging depth (2.5 m).

The productivity of rotary trench excavators is higher than that of single-bucket excavators. They are capable of developing trenches in denser soils, on which single-bucket excavators can only work after preliminary loosening by drilling and blasting. Rotary excavators are more reliable and have a stable base for digging trenches on slopes; they can be used with a longitudinal slope of up to 20°.

Rice. 3.1. Rotary trench excavator ETR-231A: 1 - tractor; 2 — mechanism for lifting the working body; 3 - supporting frame; 4 — electric hoist; 5 — jib crane;

Conveyor; 7 - rotor; 8 — selection shield; 9 — support wheel.

Rice. 3.2. Rotary trench excavator ETR-253A: 1 - tractor; 2 - U-shaped supporting frame; 3 — hydraulic cylinders for lifting the working body; 4 - rotor;

Conveyor; 6 — selection shield; 7 - support wheel.

Bucket excavators

Single-bucket excavators perform work on complex, rugged sections of the route and on sections of curved inserts. They are also used to develop trenches in watered, unstable and loose soils, in loose rocks and in soils with various solid inclusions (boulders, large stones, crushed stone, gravel, etc.). Sometimes single-bucket excavators are used in combination with other earth-moving machines, in particular, with rotary excavators (in cases where the design data of the latter does not allow the development of trenches of the required depth).

Single-bucket excavators are divided according to the type of working equipment: with a straight shovel; backhoe, dragline and grader bucket.

Some excavators have additional inserts for extending the boom, as well as crane equipment. Such excavators are called universal.

Rice. 3.3. Excavator E-652B with straight shovel working equipment:

Perfection in every model

The excavator is equipped with a Perkins 1104C-44T engine, which is characterized by high power, but at the same time fuel efficiency. And these are not all the advantages that engineers and mechanics awarded the ET-18

• Excellent maneuverability
• Long period of use
• Several diesel engine model options
• Rollover resistance
• Multifunctionality
• Comfortable glass operator's cabin with all necessary equipment and a conveniently located control panel
• High level of protection

The ET-20 crawler excavator differs slightly from its predecessor and is a single-bucket full-rotary excavator. It also finds application in both civil engineering and industrial applications. The depth of possible digging has increased slightly, a more powerful engine has been installed, and the overall dimensions of the device have become larger. In terms of the functions they perform, all TVEX series excavators are analog and similar to each other. Possible attachments for the ET-20 are a grab, hydraulic shears, a ripper, and additional buckets. As noted earlier, the TVEX series is distinguished by a comfortable cabin, designed with conditions of maximum convenience for the operator to work with thoughtful details.

Where should there be a fire extinguisher?

OP-25 is equipped with various production facilities, warehouses, national economic facilities, and vehicles. Since the devices have a large volume of fire extinguishing agents, they are placed in large areas with significant sizes of the expected fire sources.

OP-25 is not suitable for equipping office and public facilities due to its size. It is also undesirable to place the unit in rooms with a large amount of valuable equipment and documentation, since the composition used can cause irreparable material damage to property.

Operator's cabin

The cabin is designed taking into account the wishes of consumers, so it is characterized by ergonomics and comfort. The improved appearance and large glass area make the excavator noticeable against the background of other equipment.

As standard, only a heater is installed in the cabin; an optional air conditioning system is installed, which ensures comfort in any weather. Operator safety is due to the installation of a strong and rigid frame, as well as protection systems.

The basic assembly includes the installation of a seat with shock absorbers, which can be adjusted.

The EK-14 wheeled excavator is equipped with a steering wheel that can be tilted. It contains the main controls for machine functions. The dashboard has a large number of indicators that are intuitive, including hydraulic fluid and water temperature sensors, as well as fuel level. Thanks to its simple design, technical inspection and maintenance are easy. Emergency signs have been posted.

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Excavator TVEX ET-26 technical characteristics

The TVEX ET-26 excavator is a single-bucket, full-rotating crawler excavator that has Bosch-Rexroth hydraulics and a Hydronic heater. It is produced

Excavator TVEX ET-26 technical characteristics:

• Engine: model YaMZ-236M2-7;
• power 180 hp (132 kW);
• speed 2100 rpm;
• number of measures 4;
• fuel consumption 157 g/hp (214 g/kW);
• weight 890 kg.

Operating weight 26500 kg. Dimensions:

• total width 3000 mm;

total length 10320 mm; total height 3589 mm; the distance between the center of rotation and the heel axis is 390 mm; the height of the excavator to the axis of the heel of its boom is 1890 mm; clearance under counterweight 1130 mm; the radius of the tail part of the platform is 3000 mm. Running device:

• travel speed (low/high) - 2.12/4.25 (km/h);

track width 600 mm/750 mm/900 mm; ground pressure 0.56 kg/cm 2 ; ground clearance 460 mm; base 3700 mm; trolley length 4560 mm; track 2400 mm; trolley width 3000 mm. Refill containers:

• fuel tank 437 l;

hydraulic system 450 l; hydraulic tank 370 l. Counterweight weight 4300 kg. Turntable rotation speed 11 rpm. Hydraulic system:

• stroke drive pressure 25 MPa;

control pressure 3.5 MPa; equipment drive pressure 28 MPa; platform drive pressure 22 MPa; pump flow 2x230 l/min. Electrical system:

• number of batteries 2;

voltage 24 V; battery capacity 195 A. Overcome slope 35 degrees. Traction force on the trolley is 21 tf.

Excavator TVEX ET-26 technical characteristics of the equipment used:

• bucket capacity 0.65 m 3 /0.8 m 3 /1.0 m 3 /1.25 m 3;
• shipping height 6960 mm;
• digging depth 6540 mm;
• digging radius 10270 mm;
• digging radius at the parking level is 10100 mm;
• bucket rotation 188 degrees;
• bucket digging force 19000 kN;
• digging force with the handle is 11800 kN.

The TVEX ET-26 crawler excavator is used at ambient temperatures of -40 - +40 degrees. It is used on non-frozen soil of categories 1-4 and on previously loosened frozen soil, rocks, the size of the pieces is no more than 400 mm. This equipment is indispensable when digging quarries, pits, canals, trenches and when loading soil into vehicles, platforms, open railway cars.

Thanks to the design of the excavator, it can be equipped with widened shoes, which guarantees a reduction in ground pressure and also facilitates working conditions on waterlogged soils. In addition, this excavator can be equipped with a digging grab, ripper, hydraulic hammer or magnetic plate.

The TVEX ET-26 crawler excavator is characterized by the following advantages:

• the presence of a single cabin, which is located in the left front part of the turntable, has a large glass area and guarantees wide visibility of the work being performed, dust protection, safety, low noise level and a comfortable workplace;
• the presence of a comfortable driver's seat;
• multifunctionality due to the ability to install various working equipment;
• convenient arrangement of instruments on the control panel necessary for monitoring and controlling the excavator;
• ease of management and maintenance;
• the presence of compartments designed to store the driver’s personal belongings, as well as a fire extinguisher, first aid kit and other essentials;
• sustainability;
• high cross-country ability;
• reliability of structures, long period of use;
• high performance.

Excavator TVEX ET-18 technical characteristics

Power plant of the T-25 self-propelled vehicle

The engine installed on the tractor is a diesel unit from the Vladimir Tractor Plant. The motor is marked with the abbreviation D21A1, performs four strokes, is air-cooled, with two positive displacement chambers.

The lubrication system of the unit is combined, the working fluid is supplied to the rubbing parts under pressure and splashing, this maintains the thermal regime at the required level. Idle time of the engine exceeding the permissible limits is not recommended, as it leads to overheating.

Power plant D21 tractor T-25:

Powerplant D21

Indicators of the D21F1 power plant:

• Installation type – internal combustion engine, compression ignition;
• Number of engine strokes – 4;
• Number of engine displacement chambers, pcs. – 2;
• Mixture formation – combustion chamber in the piston, direct injection of the working mixture;
• Fuel pump (HPF) – ND21/2, single-plunger, in-line, with manual pumping;
• Engine power, kW/hp – 19.5/26.6;
• Crankshaft revolutions, min-1 – 1600;
• Operation of volumetric displacement chambers, order – 1-2-0-0;
• Volumetric displacement chambers, positioned vertically, in a row;
• The diameter of the volumetric displacement chamber, millimeters – 105;
• Distance from bottom dead center to top dead center, millimeters – 120;
• Engine compression – 16.5;
• Engine dimensions (L*H*W), mm – 689*865*628;
• Engine weight (depending on configuration), kg. - 272/295;
• Specific consumption of a diesel engine, g/kW*h – 223.

Products

The brand produces a large number of agricultural equipment, the most popular being tractors, precision farming systems and combines.

Today the following series of tractors are produced:

• 6G.
• Episode 9 TTV.
• Episode 6.
• Episode 7
• Agrotron X720.
• Agrotron L720.
• Agrotron M620.
• Agrotron 180.
• Agrotrac 130/150/170.
• Agrofarm G115.
• Agrofarm G410/430.
• Agrolux 4.80.
• 6W Profi.
• Agroclimber F.
• Agroclimber.
• Agroplus FVS.

Precision farming systems are used in many modern agricultural enterprises. Automated control and synchronization of operations significantly increases work efficiency. Deutz-Fahr offers reliable and highly precise automation. The precision farming system from Deutz-Fahr is:

• Reception of signals using all satellite systems, including corrective ones.
• A single interface for all processes and applications. Its diagonal can be 8 or 12 inches.
• Steering systems are represented by visual, power steering.
• High-precision sectional control that eliminates overlaps and skips.
• Possibility of complete automation of data management.
• A security system for large tractors has been introduced; the cameras have a wide viewing angle.

Combines:

• S9000 series.
• HTS 6060//6095.
• C6000.

Modifications of the excavator Tveks EK-14

Tveks EK-14 excavators are produced in several modifications, differing in engines and hydraulics:

• EK-14-20 - with an MMZ D-245S-997 engine with a power of 77 kW, or 105 horsepower.
• EK-14-30 – with MMZ D-245S-997 diesel engine and Bosch-Rexroth hydraulic system.
• EK-14-60 - with a Perkins 1104C-44TA engine with a power of 90 kW, or 123 horsepower.
• EK-14-90 - with a MMZ D-245 2S2 power unit, 90 kW, or 123 horsepower, and a Bosch-Rexroth hydraulic system.

With Perkins engines and Bosch-Rexroth hydraulics assembled according to the LUDV hydraulic circuit, modifications of EK-14 excavators have been produced since 2009.

For any of the above modifications, the following list of additional equipment is offered, installed optionally, for an additional fee. These are: safety valves for boom hydraulic cylinders with an overload warning device; safety valve for the hydraulic cylinder of the handle; hydraulic distribution kit for connecting active working parts with two working movements (grabs, log grabs, sorting grabs; quick-release device with mechanical and hydraulic drive; air conditioning; tinted (in accordance with standards) cabin windows; telematics system (GPS, GLONASS); clock; a tool box in the left footrest; a driver's seat with air suspension and heating; a hydraulic circuit with quick-release devices for connecting a hydraulic hammer; an automatic centralized lubrication system for the hinges of the working equipment and gearboxes.

Features and Benefits

The ek 14 excavator has a fairly large reserve of operational life and power, has high productivity, durability and reliability. This is ensured by the reinforced design of the self-propelled chassis and excavator equipment with double hydraulic cylinders for the lifting boom.

The rotating platform of the excavator, due to the reduced turning radius, provides ease of control of the machine and the ability to operate in confined spaces.

Additionally, the excavator can be equipped with an imported Bosch-Rexroth hydraulic system, which ensures particularly smooth operation of the equipment, increasing the productivity and reliability of machine operation. Photo of TVEX EK-14 excavator

A modern operator's cabin with panoramic windows, ergonomic controls, a narrow steering column and an air-suspended driver's seat ensures comfort and ease of operation in any operating conditions.

Additional operational safety is ensured by the rigid steel cab body and protective grilles that protect the driver from falling foreign objects. The engine pre-heater and the operator's cabin equipped with a heater and air conditioning allow the excavator to be used in an extended temperature range (from +40 to -40C).

The TVEX EK-14 wheeled excavator can use a variety of attachments (removable handles and buckets of various lengths and capacities, hydraulic hammer, ripper, clamshell bucket, etc.) using a quick-release device.

This expands its functionality.

Pros and cons of this model

OP-25 has many advantages:

• excellent price-quality ratio;
• a jet of powder 6 meters long and a hose 3 meters long make it possible to extinguish fire from a safe distance;
• effective for extinguishing most fires;
• the powder composition is relatively safe for people;
• the composition is supplied for at least 20 seconds;
• two-wheel trolley and handle make it easy to transport equipment;
• The installed pressure gauge allows you to monitor the pressure inside the cylinder and the performance of the device.

Among the disadvantages are:

• lack of cooling, which is fraught with secondary fire;
• after using OP-25, special cleaning of the room is required, since the powder significantly contaminates surfaces and property;
• high degree of dust, reduced visibility during the extinguishing process;
• strict adherence to the rules for storing the fire extinguisher, since the powder composition under unfavorable conditions is prone to the formation of lumps and caking.