Chetra T 11 overheating of the transmission system. Description of the driving system of the bulldozer

His fame and popularity of the tractor industrialists under the brand "Chetra" are obliged to a heavy tracked bulldozer T-11. It was this tractor that became a flagship in the production line of a powerful bulldozer technology, which is successfully applied in production, in various fields of industry.

The scope of the T-11 model is quite extensive. It is widely used in the intelligence and in the development of oil and gas deposits, the mining mining industry, in construction sites, as well as when laying new and in the repair of old roads.

This bulldozer is equally good when developing any categories of soils, be it frozen or solid. Such operational qualities, plus safe and comfortable working conditions, made the car popular capable of successfully competing with domestic and foreign counterparts.

History of creating bulldozer Chetra T-11

The decision to build a new, large tractor plant was adopted in 1971, and in January 72nd its construction began. Simultaneously with the construction, he was a set of personnel in the team of tractor builders of the new enterprise, Cheboksary plant of industrial tractors or CHTP.

Experienced specialists from such enterprises were invited to leading positions as: CHTV, PTZ, VGTZ, etc. In the same 1972, the set and ordinary posts began, youth from different parts of the country reached a new enterprise.

In December 1974, the first workshop of the plant began working, components for the first tractor began on its squares. In 1975, on October 25, the technical control department received the first bulldozer of the "ChPT" brand, the heavy T-330 of which was 330 hp This day is customary to consider the birthday of the enterprise. In September 1982, the anniversary, 1000th tractor T-330 was manufactured.
Bulldozer T-330.
In 1985, the development of a line of new industrial machines 50, 35 and 25 tons was ready. The first three Bulldozer T-25.01 were built with a planetary type PPC. At its base, a meliorative machine and modification for the pipe laying were created.

At the end of 1993, "CHHT" was privatized and transformed into OJSC InterTractor.

In 1995, the T-35 and T-25 tractor went to the series, these cars were equipped with YMZ diesel engines. The beginning of work on the bulldozers with a capacity of 240 and 280 hp, called the T-15 and T-20 for 1996.

The first was collected by the T-20 in the winter of the 97th, and in October 99th, the first serial T-15. In the same 1999, the design of T-11 began, it weighed 19 tons and power reached 180 hp. The first Bulldozer T-11 was manufactured in 2001, Sberbank participated in this project as an investor, in the same year its mass production was launched.

In 2002, at the Tractor Show, where new tractors models were shown, OJSC InterTractor for the first time presented his products under the brand "Chetra" for the first time. In June 2005, the company became part of the Tractor Plants Concern LLC.

Specifications of bulldozer Chetra T-11

The T-11 bulldozer was created to work in all climatic zones, the car feels perfectly both at -50 on the north and in southern latitudes at temperatures up to +50. Maintainability and simplicity in maintenance is provided by the modular device of the nodes and parts of the tractor. Each module can be separated separately and transported to the repair shop, leaving a multi-torque machine.

The tractor was developed together with the German concern Zauer Danfoss, taking into account modern requirements, therefore T-11 includes the nodes and aggregates of domestic and foreign production.

Consider the bulldozer in more detail.

Dimensions and mass of the tractor:

• Long - 6588 mm;
• Width - 3854 mm;
• Height - 3412 mm;
• Base - 2616 mm;
• Mass with Ripper, Dump and DVS, YAMZ / CUMMINS - 20785/19975 kg.

Chetra T-11 bulldozer engine

Chetra T-11 is completed with diesel engines of two different brands:

• Domestic yamz-236nd2;
• American Cummins QSB6,7-C204.

Yaroslavl Motor Plant provided a V-shaped, four-stroke, six-cylinder, diesel with liquid cooling. With the volume of the engine, a little more than 11 liters, its power was 136 (185) kW (hp), during engine revolutions 1900 rpm. Cylinders with a diameter of 130 mm, and the stroke of the piston is 140 mm. The torque issued during engine revolutions 1200-1400 rpm, approximately 883 nm.

American machine builders supply a six-cylinder, four-stroke, a row assembly with a superior and liquid cooling. Thanks to the supervision and other constructive features, with a volume of 6.7 liters, it was possible to remove 137.5 (187) kW (hp) at the maximum 2000 rpm. The ratio of the diameter of the cylinder and the stroke of the piston is 102/136.4 mm. Torque at nominal engine speeds 1500 rpm, about 938 nm.

The American diesel is slightly superior in terms of the characteristics of its Yaroslavl counterclaim, is also considered more reliable and economical. However, YAMZ is much easier to maintain and repair it is an order of magnitude cheaper, except for this, Yaroslavl diesel engines have passed not a single check in the North and at the same time received positive feedback for the most part. Therefore, the unambiguous answer is what engine is better, it is not easy, the main thing is that there is a choice.

Chetra T-11 Bulldozer Transmission

The gearbox on the planetary type bulldozer T-11 and the possibility of switching gear under load. Couplings work in oil and differ in ability to transmit high torque values.

Provides a tractor three speeds ahead and the same back, the speed of movement is from 3.7 to 11 km / h fart and back from 5 to 14.4. The box, together with the main transmission and the matching gearbox, forms a single module installed in a special boring of the rear axle.

Transmission and chassis Bulldozer Chetra T-11

The hydrostatic transmission was developed as mentioned by Zauer Danfoss, specifically for bulldozers brand "Chetra".

For reliable transmission of torque from a diesel engine to the checkpoint, a hydrotransformer is used, which is connected to the motor using an elastic coupling and a cardan transmission.

The brakes are multi-disc clutches, closed constantly spring effort. Throughout the service life, they do not need to be adjustable, and the cooling of the oil-sustaining oil.

Suspension on the tractor semi-rigid, three-point. The rendered axis of the swing cart gives a bulldozer with increased traction properties and reliable clutch with the surface, as well as protects the chassis T-11 from the load on the blow.

Guide wheels, and with them supporting and supporting rollers, equipped with self-sufficient seals the so-called "double cone" and lifelong disposable lubricant. Each Gisenice of the bulldozer has two supporting rink and six reference.

T-11 tractor caterpillars Prefabricated, each shoe has one primer, and for the lubricant delay there is a seal in the hinge.

The surface area on which the caterpillar is based on 2.668 m2, while the pressure on the soil does not exceed 0.76 kg / cm2.

• The number of shoes in the caterpillar - 39 pcs;
• Links in step - 203 mm;
• Grupping height - 65 mm;
• Width of shoes - 510 mm.

Steering and Cabin Bulldozer Chetra T-11

T-11 is controlled by side friction, multi-disc couplings using hydraulics resulting into action. Disconnecting (in whole or in part) clutches of the left or right side friction, the bulldozer turns to the appropriate side. Frictions from the control post are managed using two levers.

The tractor cabin has double glazing, excellent visibility of all working areas and equipment. Equipped with heating and forced ventilation systems, and on request and air conditioning system.

Interior decoration, the form of panels and controls are modern design and are made of high-quality materials, and most importantly are located as convenient as possible for the operator.

Gas pedal can be fixed in the selected position, providing the necessary engine speed. For direction (forward, backward) and gear shift, one lever corresponds. Two small leverage on the left of the driver controlled onboard frictions. There are two separate levers for controlling the ripper and dump. All controls are available from the operator's chair, which helps reduce the operator's fatigue during shift.

Hydraulics and hinged equipment Bulldozer Chetra T-11

The separation and aggregate system of the T-11 bulldozer includes:

• Pump gear S1A6097, during engine revolutions 1800 rpm issues a productivity of 163 l / min. Manufacturer, David Brown;
• Distributor four-section from the company "Bosch Rexton", three working sections, one valve;
• The valve is safety, triggered at a pressure of over 200 MPa;
• Hydrobac welded, with a capacity of 85 liters;
• Hydraulic cylinders 5 pcs. 2 on the rise-lowering of the dust, 1 on the rotation of the rope to the right and left, 2 on the rise-lowering of the ripper.

Bulldozer equipment.

The hemispheric dust of the large capacity provides the Bulldozer T-11 high performance. The use of diagonal thrust when transferring lateral loads from a dump, on the left bulldozer spar, gives the greatest rapprochement of the dust with the hood and the greatest reference force on the knife of the dump.

Ripper.

Depending on the necessary performance, the bulldozers "Chetra" are installed loosers with one fang, as well as with three or two teeth.

• View of the ripper - multi-cell / unregulated;
• The number of teeth - 3/1;
• Blowing - 640/530 mm;
• Blowing force - 6.14 / 5.7 tons;
• Breaking force - 17.15 / 16 tons.

Modifications of bulldozer Chetra T-11

T-11 bulldozers can be equipped with engines of two manufacturers and various attachments and mass. For example: T-11.02YAB is equipped with a diesel engine of the YAMZ-236, and its mass is from 20.87 to 23.4 tons; T-11.02K with Commins diesel and mass from 20.4Do 23.4 tons.

Also after the name, you can find additional listers that are written for easier identification, their designations:

• M - small pressure on the ground;
• C - the presence of hydrostatic transmission;
• L - winch included;
• P - with a turning dump.

Operation of Bulldozers Chetra T-11

The overwhelming number of machines of this class in our country, work in the difficult conditions of the North, Siberian and Far Eastern Taiga. Oil and gas fields are mastered, as well as participate in the exploration of new ones. Put the oil and gas pipelines, through wild uninhabited places, where there are no roads or infrastructure. Work on gold mining, on the work of Eastern Siberia and on the river. Kolyma.

In such difficult conditions, the technique often works within the limits of possible, and advantages, as well as disadvantages, quickly show themselves:

Benefits.

• Adaptation of machines to the conditions of the North: the preheating of the engine; additional, independent heater in the cabin, imported fuel filters with fuel heating function and water separation;
• Modular design of nodes and systems, which increases maintainability and ease of maintenance;
• Reliable YMZ and Commins diesel engines;
• Comfortable working conditions for the operator.

Chetra T-11 performs a trick.

Disadvantages.

• Most often arise with hydraulics, after an operation of 2-3 thousand hours;
• Problems in the operation of the transmission (again in terms of hydraulics);
• In general, we give up reliability and developing by well-known foreign analogues.
• Not a longer service life of the caterpillars.

Conclusion

In general, the car is not bad, although inferior to the reliability of some foreign analogues. In the brand "Chetra", which is not unlikely for domestic engineering, the manufacturer paid considerable attention to the comfort of the operator. Also in the design as a whole, modern design solutions and technologies are applied. Of course, there is a mass of flaws that the plant still has to be corrected, but in general, "Chetra" moves in the right direction.

At the price of the bulldozers of this brand cheaper than eminent analogues from abroad by about 1.5 times. This is a significant advantage over competitors in favor of Chetra in the domestic market.

In the secondary market, the price of the T-11 bulldozer may vary from 800-900 thousand per machine in working condition issued in the early 2000s, up to 4.5 million per capened instance of 4-5 years of age. New T-11 can be purchased for 5.5-6.7 million rubles.

As we have repeatedly mentioned in this section, we supply the tractor and bulldozers of the Chelyabinsk Tractor Plant and all specialists mounted on their base, but we have the opportunity to supply parts also to machines of other manufacturers, including the brand "Chetra". Our task has always been the maximum coverage of the Russian market of special equipment in terms of work with the most different customer requests. With many years of work in this market, strong connections with machine builders are tied, information about similar machines accumulates.

Line of bulldozers "Chetra" and place of model T-11 in it

Machine-building plant OJSC "Promteractor" in Cheboksary - a well-known manufacturer, producing tracked tractor models from T-9 (Diesel power 150 hp, Machine weight 17-20 tons) to T-40 (Diesel power 590 hp, weight Tractor 65 tons). The T-9 model with the YMZ-236-NB-2 or Cummins engine in its characteristics and capabilities of a little less than T10M (B10M) "CHTZ", and the T-40 "Chetra" is included in the seven of the most powerful tractors in Russia.

The T-11 model is following T-9 in the "Chetra" model series, approximately corresponds to the characteristics of the model B11 "CHTV" (Diesel 190 L.S., 10th traction class with a hydromechanical transmission). T-11 tractor with the designation "-I" in the name of the model is equipped with the Yamoslavl diesel engine of the YAMZ-236-ND-2 (185 hp), has a lot of 20.3 - 23 tons, can work with various types of dumps (swivel from mechanics or Hydraulics) and three types of rippers are one, three- and semi-love.

For instance, t-11.02Y BR-1 Machine - This is a bulldozer with the aforementioned Russian diesel engine, a hemispherical dump (rather large: the dust capacity is 5.6 m 3) and a ripper with a 1st tooth (maximum blowout in the soil - 640 mm).

Imported developers and components

OJSC InterTractor In the development of its designs actively uses imported nodes and components (European and American): For example, the transmission was developed by order of this company by the German company Sauer Danfoss. On-board transfers with brakes, the gearbox of the pump drive to it were developed by the design office of OJSC InterMractor. Other imported nodes, in addition to the Cummins diesel engine:

• aKG radiators (Germany);
• gear oil pump with david brown skewers;
• fLEETGUARD diesel fuel filters with various advanced features relative to "ordinary" filters;
• bosch hydraulics - rexroth, etc.

The capabilities of the T-11 and the requirements for modern bulldozer

The Bulldozer T-11 "Chetra" can perform the planning of sites and trails, to develop soils, carry out earthquakes, to build embankments, move construction materials, used in logging operations. One of the main functions of the bulldozer, as always, is the development of solid soils by the Kirchkashik (if the soils, for example, rock-one-to-block, to apply the maximum force of the machine) and the subsequent sample of the spent breed of the rotary blade.

We can say that the modern bulldozer requires:

• the most efficient use of the mass of the machine with a bardocation, which is expressed in the design of the bulldozer attachment, its long-term cylinders;
• smooth gear shift under load, smooth adjustment of thrust force depending on the resistance of the rod (the hydromechanical transmission is responsible for it, which is present on all the "Chetra" machines, and its control);
• a set of universal bulldozer-ripper tools, additionally - trailed devices and swans;
• convenient ergonomic cabin with joysticks, with maximum glazing area for visibility, but hermetic, air conditioning, heater, with ROPS protection system - Fops;
• a small specific pressure of the caterpillars for the soil;
• chassis (wheels, rollers, caterpillars), which requires not very expensive service time.

Our spare parts for "CHTZ" and "Chetra" bulldozers

We supply the tractors and bulldozers of the Chelyabinsk Tractor Plant, we supply a very large volume of spare parts to our customers and keep an extensive catalog on the site - detailing all the nodes: from the forks and rollers of shifting gear to brakes of the cabin and sealing their cords, from the frames of the carts to the dissipasses of the bulldozer equipment. All the same we are ready to supply both the "Chetra" bulldozers:

• spare parts for the Yamz-236-ND-2 YAMZ-236-ND-2 diesel engine and serving its air supply systems, oil, fuel;
• components of hydromechanical transmission with planetary box, side friction, brakes;
• spare parts for bulldozer, loose, trailed equipment;
• equipping the cabin;
• definitely - everything is associated with a caterpillar move: from supporting and supporting rollers to borterate shells of onboard gearboxes.

Over time, in the process of working with different series and models of machines, experience comes and understanding features: What is the difference in, for example, the support rollers and the caterpillars tensioning from the "CHTZ" and "Chetra", which is a self-sufficient compaction of the "double cone" type, which are considered a big plus design of the chassis chassis. Otherwise, machines of different manufacturers for the same functions, especially - the tractors of one traction class, many similar nodes: For example, a hydrotransformer, planetary checkpoint, the design of a bulldozer dump on long-term cylinders, and the like.

Bulldozer T-1101, T-11.01, T-11.02 tractor, Chetra T11 has a greater performance and can be used in industrial, oil and gas, hydraulic, road construction and mining industry to perform various types of work, including when developing murous soils.

Characteristics T-11.01

A detailed description of the characteristics of the Bulldozer T-11.01, the Chetra T 1101 produced by OJSC InterTractor. The sections indicate the technical characteristics of both the T-11.01, T-1101 bulldozer, as well as individual nodes and aggregates.

• Engine
• Transmission
• Chassis system
• Caterpillar
• Hydraulic system
• Bulldozer equipment
• Ripper equipment
• dimensions
• Weight
• Modifications and equipment
• Special offer
• Reviews

Bulldozer Chetra T-11.01 Yabr-1

ENGINE

Bulldozer T-11.01, T-11.02, Chetra T-11, T-1101 tractor comes with different engine models, both Yaroslavl motor factory and Cummins engine.

ENGINE YAMZ-236 ND-2

Six-cylinder V-shaped (collapse angle 90 °) Four-stroke diesel for liquid cooling NMZ-236 ND-2 Yaroslavl motor factory.The installed YMZ-236 motor ND-2 has the following characteristics:

Fuel pump with adjustment of the torque with the entire rotational speed regulator. The heat exchanger for cooling the transmission oil is set as part of the radiators block. Oil cleaning system with full-flow centrifugal regulator of rotation frequency. Liquid and oil exchanger for cooling engine oil. The heat regime control is provided by a thermostat and a fan with a disk clutch drive with automatic switch-on control, depending on the temperature of the coolant. 24-volt electrical launcher.

Engine Cummins QSB6,7-C204

The six-cylinder four-stroke diesel engine of liquid cooling with turbocharging and cooled air-air cooled air QSB6,7-C204 CUMMINS firms with inline cylinder arrangement has the following technical characteristics.

Four-way oil purification system with one replaceable paper filter element. The heat regime is controlled by a thermostat. The cooling of the transmission oil is carried out by the coolant of the engine in the heat exchanger installed separately from the engine. Anticorrosive cooling system filter. Liquid and oil exchanger for cooling engine oil. Pushing type fan. Fan drive through belt transmission.

TRANSMISSION

Planetary gearbox Bulldozer Chetra T-11 bulldozer, T-11.01, T-11.02 bulldozer, T-1101 tractor, switching under load, with diameter couplings 345 mm, working in oil and having a high torque transmission capacity, providing three front and three transmission Reverse transmission. The gearbox is combined with a matching gearbox and the main transmission into a single power unit, which is installed in the rear axle boring. Three-element, single-stage torque converter with an active diameter of 390 mm, the maximum coefficient of CO \u003d 2.539 with a gear of the pump drive, is connected to the gearbox with a slotted clutch, is installed on the front wall of the rear axle. The torque converter is connected to the engine through the cardan transmission and the elastic coupling mounted on the engine.

The traction force depends on the weight of the bulldozer and clutch forces.

Turn and braking control

Onboard friction - multidiscory couplings, hydraulically driven. Stop brakes - a constantly closed multi-disc clutch springs. On-board friction and brake are cooled under pressure and do not require adjustment during the entire service life.

Transmission onboard

The onboard transmission is a two-stage, I-I step - gears of external engagement, II-I step - planetary according to the scheme "K + 1" (with a stopped corona gear). To facilitate the ease of replacement in the field, the leading asterisk is made five sectors that are attached to bolts.

CHASSIS

Suspension: Three-point seven-growing suspension with the axis of the swing of the carts provides high traction-coupling properties, reduce shock loads on the hoding system. Supporting and supporting rollers, guide wheels with disposable lubricant with self-sufficient seals of the type "double cone".

Caterpillar

Crawler of bulldozer Chetra T-11, T-11.01, T-11.02 Prefabricated with one primer and seal for retention of liquid lubricant in a hinge. The caterpillar tension is adjusted by a syringe with a consistent lubricant.

Hydraulic system

Separate-aggregate hydraulic system of Chetra T-11.01, T-11.02 includes:

• sH1A6097 gear pump S1A6097 firm of the company "David Brown" with a capacity of 163 l / min at a 1800 rpm engine
• four-piece distributor of the company "Bosch Rexroth", consisting of one valve and three working sections
• the maximum trigger pressure of the safety valve is 20 MPa (200 kgf / cm²)
• the tank of the hydraulic panel (weld tank, adapted for mechanical cleaning of internal surfaces) - 85 l

Cabin

On bulldozer Chetra T11 A dual-glazed cabin is installed, providing maximum equipment visibility and working areas.

The cabin is equipped with a ventilation system and heater, as well as a vibration seat and noise absorbing upholstery. On request, an additional heater and air conditioning is installed.

Controls satisfy ergonomic requirements and easily manageable and available. Diesel control is carried out by a pedal recorded at the selected crankshaft rotation frequency. Transmission and change of movement is carried out by one lever, control of onboard frictions is carried out by two levers, the emergency stop is provided by pressing the brake pedal.

The control of the bulldozer and the ripper is carried out by separate levers. All control is carried out from the driver's seat, which allows it to work without fatigue during the work shift.

Bulldozer equipment

The large capacity of the hemispherical dust of the Chetra T-11.01 bulldozer, the T-11.02 provides increased productivity, and the use of diagonal thrust when transmitting lateral efforts with a dump on the left side member of the bulldozer frame ensures the maximum bounce approximation to the hood of the bulldozer and the maximum pressure force on the blade knife.

Ripper equipment

Depending on the work of the bulldozer of Chetra T-11, T-11.01, the T-11.02 on the ripper can be mounted one, two or three teeth, which allows you to get high performance.

Filling tanks

The filling tanks of the bulldozer of Chetra T-11, T-11.01, T-11.02 have the following characteristics:

dimensions

The parameters of the dimensions of the bulldozer Chetra T-11, T-11.01, T-11.02 are presented in the following characteristics:

Weight

The total mass of the Chetra T-11.01 bulldozer, T-11.02 as standard (SU-dump, a three-ripped ripper with a YAMZ engine) - 20,785 kg, with a Cummins engine - 19,975 kg.

Special offers

Bulldozer Chetra T-11.01 Yabr-1

On sale Bulldozer Chetra T-11.01 Yabr-1 (T11, T-1101) in stock and to order, both new and after major repairs. Bulldozer Chetra T-11.01 Yabr-1 is equipped with an EMZ-236ND-2 engine with a capacity of 154.5 kW (210 hp), a hemispherical dump and one-to-line ripper. .

Bulldozer Chetra T11m Swamp

We also offer in stock and to order Chetra T11M with reduced pressure on soil, providing high running quality on low density soils. .

Modifications and equipment

Bulldozers Chetra T-11, T-11.01, T-11.02 are supplied in the following modifications and equipment.

Standard equipment

In the standard equipment of the bulldozer Chetra T-11.01, T-11.02 includes:

• Adjustable Operator Chair on Soft Pillow
• Air cleaner
• Cabin heating fan
• Decer
• Sound signal
• Front towing hook
• Engine protection
• Hydraulic device for the test mechanism of the caterpillar
• Lighting system
• Multilayer defense
• Muffler
• Parking brake
• Protection of power transmission
• Replaceable segments of a gentle crown
• ROPS / FOPS Protective Design
• Safety belt
• External power outlet 24 V
• Power socket 24 V
• Alternator 75 A
• Rechargeable batteries (2), 12 V, 190 a * h (onboard voltage 24 V)
• Cigarette
• Starter
• Electric meter Motocamis

On dashboard:

• tachometer
• coolant temperature pointer
• engine oil pressure pointer
• engine oil temperature pointer
• voltage pointer Bottiet
• fuel level pointer
• transmission oil temperature pointer

On dashboard Indicators:

• emergency oil pressure in the engine
• engine coolant overheating
• no charge batteries
• blind of air filter
• filter clogging in hydraulic
• overheating oil in hydraulic
• filter clogging in transmission
• minimum oil temperature in transmission
• overheating oil in transmission
• blind of engine oil filter
• emergency Transmission Oil Pressure

Optional equipment

Additionally, the bulldozer Chetra T-11.01, T-11.02 is completed:

• Tool kit
• Maintenance Device

Equipment for work in Arctic conditions

To work in the Arctic climatic conditions, the Bulldozer Chetra T-11.01, T-11.02 is additionally completed:

• Preparation liquid heater PZH 30L, Hydronic M-II, Hydronic 35

• Independent Air Heater AirTronik-2D

• Cabin heater operating from engine coolant
• Insulation Case
• Blinds of the radiator of the DVS

See also: