The YuMZ-6 excavator was built on the basis of the tractor of the same name, produced from 1970 to 2001 by the Southern Machine-Building Plant. Wheeled vehicles were designed for agricultural work. During production, several modifications of YuMZ-6 were produced, including the YuMZ-6KL excavator.
Excavator-tractor YuMZ-6: specifications
The -6 itself became a descendant of the famous MTZ-5 tractor of the same manufacturer. The machine retained the continuity of the design and in many ways resembled its predecessor. The agricultural universal row-crop tractor belongs to the traction class 1.4 and is distinguished by a semi-frame layout that is classic for machines of this purpose.
Engine and transmission
Two types of diesel four-stroke engines without turbocharging were installed on YuMZ-6 excavators:
- D-65 with a volume of 4.94 liters;
- D-242-71 with a volume of 4.75 liters.
The engine power of the YuMZ-6 excavator was determined by its model. The factory D-65 produced 60 hp, and the D-242-71 produced 62 hp. The power unit of the D-65 brand was supplemented with an electric starter starting engine. The nominal speed of the crankshaft was 1800 rpm.
The transmission system of the UMZ-6 tractor-excavator consists of a five-speed gearbox with a two-line dry clutch. The car develops speed up to 24.5 km/h. The gearbox is equipped with double gears. Some tractor models were supplemented with a doubler gearbox. The specific fuel consumption of YuMZ-6 reaches 185 g / hp * h. The machine can climb slopes up to 10 degrees.
YuMZ-6 tractor-excavator: hydraulics
The hydraulic system of YuMZ-6 tractors is designed to control the rear linkage. It is a complex system made up of:
- oil pump;
- oil filter and filling tank;
- distributor of hydraulic cylinders;
- fittings designed to connect hydroficated bodies of aggregated machines.
The hydraulic system of the YuMZ-6 excavator is of a separate-aggregate type. The undercarriage is controlled by a single lever, which allows the machine to be used without instructions. The steering column is adjustable in angle and height. YuMZ-6 is a simple technique in all respects, maintainable and easy to operate.
YuMZ-6 excavator: overall dimensions
- length - 4165 mm;
- width - 1884 mm;
- cabin height - 2485 mm;
- longitudinal base - 2450 mm;
- track adjustable within the range of 1400-1800 mm;
- operating weight depending on the configuration and model - 3200, 3400, 3700, 3900 kg.
Modifications
During the work on YuMZ-6, the Southern Machine-Building Plant produced not only more than 100 thousand cars, but also offered the consumer several special modifications:
- YuMZ-6L, outwardly resembling the MTZ-50, differed in a rounded radiator grille. The machine was equipped with a starting engine;
- YuMZ-6AL - a car with a steering rack adjustable in height and angle, a modified dashboard, a rectangular hood and design improvements in the brake system;
- YuMZ-6KL is an industrial modification of the tractor, produced without a rear mounted system. Instead, the manufacturer installed standard mounts for bulldozer and excavator equipment. In essence, it is the YuMZ-6KL modification that can be considered as an excavator. After the first UMZ-6A model was discontinued, this version took the place of the base one. On its basis, an agricultural machine was developed;
- YuMZ-6AK - was first released in 1978. The cab of the equipment was distinguished by better visibility, and the hydraulic system began to be equipped with power and position control.
Application
The modification of the YuMZ-6 tractor with excavator equipment has become widespread among domestic consumers. Despite the fact that the machines have been out of production for a long time, the technician continues to work in farms of various kinds.
Initially, the YuMZ-6KL model with a 65-horsepower engine and excavator equipment was intended for use in construction and the municipal sector. Relatively small dimensions and high performance have become the key to the success of the machine in Russia. In addition, the YuMZ-6 excavator has an undeniable advantage over Western counterparts, and this advantage is its price.
The YuMZ-6KL-based tractor adapted for agriculture has become suitable for plowing, harvesting, planning and preparing fields, sowing and transporting goods in combination with agricultural and industrial machines.
Excavator bulldozer EO 2621 is a representative of universal special equipment of medium productivity. (You can learn about the largest bulldozer from this article.)
ChTZ is produced on the basis of the YuMZ 6AK wheeled tractor. Another model manufactured by ChTZ is the T170 bulldozer.
Scope of application
Due to the small size of the base tractor, wheel excavator EO 2621 has found application in agriculture, small utilities, road and energy companies. It is used in the construction of roads, the laying and repair of communications of local importance, loading operations (as well as the jcb backhoe loader).
He needs a working platform of 20 square meters. meters (see also mini excavators). Non-full-rotating hydraulic boom can be equipped with a direct and reverse bucket, clamshell grip, forks, crane, hydraulic hammer.
Equipping the tractor with a bulldozer blade increases the functionality of the machine, which is “too tough” on non-frozen soils from categories I to IV. Excavator EO 2621, photo which is presented below, is very unpretentious and easy to operate. He will not refuse to work in forty-degree frost, and on a hot afternoon.
One of the types of excavators is mining excavators. This is a great technique, used only for work in quarries. You can read about them
One of the largest models of a mining dump truck was produced at the Belaz plant in Minsk. This is BelAZ 75710.
Design
All excavator device EO 2621 based on the YuMZ 6AK wheeled tractor. The semi-rotary hydraulic boom is mounted on a vertical column resting on the rear suspension bracket of the tractor.
Initially, the design of the YuMZ tractor was not designed for use as an excavator chassis. Therefore, at ChTZ, its frame was reinforced with additional strapping, and the fuel tank was moved forward, installed in front of the radiator grille. The rear support paws of the excavator hitch were not enough to provide a tight stop during operation.
Therefore, the bulldozer straight knife, which has its own frame and hydraulic drive, also plays the role of an additional support, as well as a counterweight when digging pits, trenches and loading operations. Read also about the bulldozer T130.
See the video for more details:
Wheel excavator EO 2621 is put into action diesel engine D-65N or D-263 with water cooling. This unit rotates not only the wheels, but also the pumps of the hydraulic system. He inherited a nine-speed manual transmission with a reduction gear from a row-crop tractor.
The operator can select one of seventeen forward or four reverse gears. Although for an excavator such a wealth of choice is not entirely relevant.
Worm gear steering, in the latest excavator models it is supplemented with a hydraulic booster. The cabin is quite spacious, its equipment does not contain newfangled ergonomic options that turn a special car into a kind of flying saucer, there is only the most necessary thing - a windshield wiper with a washer, a heater. The volvo excavator can boast of rich equipment, modern design and an ergonomic workplace.
The instrument panel reads well enough. When working with an excavator hitch, the operator's seat turns back.
Scheme of the hydraulic system of the excavator EO 2621 consists of two independent circuits. Hydraulic fluid enters them from a single tank mounted on the frame to the left of the engine. The first circuit ensures the operation of the boom (two hydraulic cylinders), the arm and the bucket (one hydraulic cylinder each).
Therefore, in it three gear pumps type NSh32-3. The second one drives the rotary column, rear supports and dozer linkage. The rotation of the column is carried out by moving the chain drive with two (right and left) hydraulic cylinders.
Accuracy and smooth operation of the excavator linkage is ensured by a sectional hydraulic distributor, the design of which includes anti-cavitation valves and built-in fuses.
Excavator YuMZ EO 2621 has the following specifications:
| Characteristic | Meaning |
| Basic unit | Wheel tractor YuMZ-6AK |
| engine's type | Four-cylinder in-line water-cooled DT-65N. Power 65 hp, volume 4.94 liters. |
| Working bodies | Semi-rotary boom, bulldozer hitch. |
| Boom angle (deg.) | 160 |
| Bucket volume (m/cube) | 0,25 |
| Maximum Digging Depth (m) | 3 |
| Maximum lifting height (m) | 3,3 |
| Productivity (cubic meters/hour) | 40 |
| Hydraulic system | 2 independent circuits |
| Excavator weight (tons) | 5,7 |
| Length (m) | 6,48 |
| Width (m) | 2,2 |
| Maximum transport speed (km/h) | 19 |
Ownership cost
Excavator EO 2621, price which does not exceed one and a half million rubles (this is lower than that of Caterpillar), is available to most commercial and state enterprises engaged in agriculture, construction, maintenance of public utilities and energy systems.
In the secondary market, its average price is at the level of six hundred thousand rubles, and the amazing reliability of the systems and mechanisms of the excavator give reason to the owners of these used machines to believe that they own practically new equipment.
Consumables and spare parts for this tractor are quite cheap. In addition, he is unpretentious to the conditions of service. It can be repaired anywhere equipped with electric hoists and a welding machine, which also reduces the cost of ownership.
EO-2621, or "Cockerel", as it was nicknamed by the people, is a multifunctional bulldozer excavator, perhaps the most famous earthmoving unit in our country.
Determining a class by machine index
Part of the information about the machine can be obtained by deciphering the abbreviations and numbers in its factory index.
What the letters “EO” mean is not difficult to guess: “E” is an excavator, “O” is a single-bucket. With numbers (2621) it is more difficult, because they were assigned not by chance, but in accordance with a certain GOST.
The first digit means that this machine belongs to the second size group, which includes excavators, the mass of which lies in the range of 6.3-10 tons. At the same time, the bucket capacity is 0.25 cubic meters. with a permissible deviation in one direction or another of 5%. There are six groups in total. The larger the weight of the excavator and the size of the bucket, respectively, the higher the group.
The next index number indicates the features of the running gear of the machine. In this case, it is a six, and it means that during the development of the EO-2621, the chassis of a tractor already in the series was used.
The third digit (two) indicates that the attachments in the excavator have a rigid mount.
Well, the last digit (one) indicates the serial number that was assigned to the model by the manufacturer.
General purpose of the machine
The EO-2621 excavator is primarily intended for excavation of soils from the first to the fourth categories of complexity, from sand to heavy clays. For this, the machine was equipped with a bucket and a dozer blade at the same time. Moreover, depending on the installation, the bucket can work with both a straight and a backhoe. Its rearrangement from one position to another does not cause difficulties and, with the presence of an assistant, is completed in 20 minutes.
In addition, the design of EO-2621 includes the possibility of using other types of attached working equipment.
List of possible jobs
The multifunctionality of the bulldozer allows you to perform a whole list of works:
- Using a backhoe, you can dig trenches, dig pits with loading the excavated soil into transport or raking it into a dump.
- With a straight shovel it is easy to load, build embankments, develop small faces.
- The bulldozer blade can be used for planning and clearing work.
- The mechanism for lifting loads, in addition to the main purpose, is easy to perform installation work.
General excavator device
The excavator is assembled on the basis of MTZ-82 - a tractor, better known as "Belorus". And this means that a pneumatic wheeled chassis is used as a running gear.
The standard frame of the tractor was additionally strengthened by the installation of a strapping frame, which, in addition to taking on the loads that arise during work, also serves as a base for mounting replacement equipment. A slewing column with an axle having a rigid fastening with a strapping, as well as hydraulic cylinders, with the help of which its rotation is carried out, is mounted on it.
During the working operations, the stability of the machine is provided by retractable supports (outriggers).
A bulldozer blade or loading equipment is attached to the front of the frame.
The controls for the movement of the tractor, as well as the dozer blade and excavator equipment, are separated and installed in the front and rear parts of the driver's cab.
EO-2621: specifications
- The productivity of the machine is 40 cubic meters per hour.
- Digging radius: backhoe - 5 m, straight - 5 m.
- Possible digging depth - up to 3 m.
- The volume of the bucket in the standard version is 0.25 cubic meters.
- Loading height using a backhoe - 2.2 m, fork, bucket or straight shovel - 3.3 m.
- The applied force when cutting into the ground: with a backhoe - 26 kN, straight - 25 kN.
- Average working cycle time: with a front shovel - 15 seconds, with a back shovel - 18.
- Load capacity of EO-2621 (when using a hook) - 500 kg.
- Lifting loads up to 3.8 m.
- Under the condition of the maximum lifting height, the reach of the boom is - 2.3 m.
- Pressure in separate hydraulic systems: excavator - 10 MPa, bulldozer - 7.5 MPa.
- The EO-2621 excavator is equipped with a diesel power unit DT-65N with a capacity of 65 l / s.
- The speed of movement on dense ground is 19 km / h.
- Track gauge (on the rear wheels) - 1550 mm.
- Ground clearance - 450 mm.
- The turning radius, provided that the attached working equipment is in the position for transportation (m) - 6.3.
- Dimensions EO-2621 (m) - 6.48x2.2x3.8 (LxWxH)
- Machine weight - 6.1 tons.
In general, analyzing the above data, we can conclude: of course, EO-2621, whose characteristics cannot be called ideal, does not have extraordinary abilities, but this is not required of him. The excavator is designed to perform daily, normal, routine work. And he does a great job with it.
Consumers evaluate the machine as reliable and very economical, easy to operate and repair, and relatively inexpensive in all respects.
The YuMZ excavator was designed by the Southern Machine-Building Plant. This unit was designed on the basis of the YuMZ tractor. The machine has many positive functions that are indispensable when working on construction, digging channels, loading various cargoes. It is important to know how many characteristics this model has in order not to make a mistake with the choice.
The lineup
From the range we can distinguish:
- Modification YuMZ-6L. The prototype of this model is the MTZ-50 tractor.
- UMZ-6AK. The tractor was distinguished by a cab with improved visibility. The installation of a PTO at YuMZ has significantly expanded the functionality of attachments.
- Model YuMZ-6AL. The tractor had an adjustable steering rack, a modified brake system, an updated dashboard and a modified hood.
- Modification of the YuMZ-6KL excavator. Model 6KL is presented in industrial version. The tractor is equipped with standard mounting blocks for bulldozer and excavator equipment, the hydraulics and hydraulic system are significantly enhanced.
The most common YuMZ excavator is EO 2621A. This model can still be found on any construction site today. Excavator dimensions:
- length - 4.165 m;
- width - 1.88 m;
- height - 2.49 m.
The mass of the excavator is 3.2-3.9 tons. The weight varies due to the configuration and type of attachments.
Power unit, transmission and hydraulics
The power units of YuMZ excavators are represented by four-stroke engines. Of these, we can distinguish:
- D-65 engine with an installed power of 60 horsepower, in addition to the engine, a starter unit was installed;
- engine D-242-71 with a capacity of 71 horsepower.
The D-65 engine capacity is 4.95 liters. Engine capacity D-242-71 - 4.75 liters. The technical characteristics of the power units regulate the speed of rotation of the crankshaft, which is 1,800 revolutions per minute.
The YuMZ excavator has a 5-speed gearbox, which is equipped with a dry clutch. The drive shaft and the power take-off shaft are interconnected. The parts of the box are lubricated by spraying oil. The gearbox is controlled using the gear shift lever and the lock lever. The transmission specifications guarantee a speed of 24.5 km/h and climbing at an angle of 10°.
The YuMZ excavator (cockerel) loader has a modular type hydraulic system, which consists of the following units:
- An oil tank that serves as a reservoir for hydraulic fluid. Located on the left side for better oil level control. This is convenient for the tractor driver.
- Hydraulic distributor - 2 pcs. The hydraulic scheme implies the presence of a fluid flow distributor for better control of excavator mechanisms.
- Gear pump. The hydraulic circuit is completed with standard pumps of the NSh-71 and NSh-100 types. The pumps are driven through a splined coupling from the transmission gear. The pump gears are cast integrally with the shafts.
- Hydraulic cylinders. Hydraulic power cylinders raise, lower the bucket and blade of the YuMZ EO excavator. Cylinders are attached with brackets.
- High pressure pipes and hoses are required to supply oil to the units of the EO 2621 hydraulic system.
For better control it is equipped with a power steering. GUR drives the pump NSh-10.
Operation and equipment
The YuMZ 6-based excavator is adapted to work in a wide temperature range, reliable and versatile in use. It copes with the heat and starts perfectly at -40 ° C.
The device and layout of the excavator allows you to use it for various construction works.
Modernization and alteration allow expanding the range of trailers and attachments.
An example is a quick-hitch front loader.
Loader Specifications:
- lifting height - 4m;
- replacement time of the working body 1-4 minutes;
- knife thickness - 20mm;
- bucket thickness - 4mm;
- lining thickness - 10mm.
The loader is designed to work with various cargoes (sand, grain, crushed stone, etc.), equipped with quick-release clamps, which significantly reduces the time of its installation and dismantling.
excavator yumz 6 akm.
borex
Yura (Sabah) I was going to buy such an excavator in 2006 with an operating time of 1100 hours. The motor costs d243. Tell me how this excavator is. Where are the weak points? Why is it cheaper than Belarusian? Although the motor was not carried with MTZ.
Ivan (Maruti) because umz it is also in africa umz
Tags: How to drive a yumz excavator video
alteration of control levers, steering, installation of a compressor, generator for 220v.
Question: There are four categories of tractor driving A B C D Can I drive a YuMZ excavator | Topic Author: Victor
Kirill Where did you find such categories in a tractor license? I have everything open and they are A, B, C, D, E, F are marked, but as you wrote, I have not seen them and I have been working on such an excavator for more than a year.
Valery The excavator is a separate category.
yumz excavator - YouTube
umz excavator. Andrey Snitkin... Modernization of the hydraulics of the EO2621 excavator based on YuMZ - Duration: 15:21. Alexander Skritsky...
