Dimensions of the bucket of the pc 400 excavator. Crawler excavator Komatsu PC400. Appointment and attachment

Crawler excavator

Since 2000, the Yaroslavl plant of the Komatsu company has been producing one of the most popular models of earth-moving machines of the Japanese company - Komatsu PC400-7, weighing 41.4 tons. It was put into serial production in 2008. Although a more modern version of this technique, the Komatsu PC400-8, has appeared, the production of the "seven" continues: the model is appreciated by consumers and is in demand on the market. All PC400-7 excavators currently sold in Russia are made in Yaroslavl: the frame, turntable and working equipment are cast from domestic O9G2S metal; engine, hydraulic components and cab are supplied assembled from Japan.

Scope of application Komatsu PC400-7 - a wide range of earthmoving and planning works with soils of all categories: development of cored holes, construction of pits, trenches and special deepenings, loading and unloading operations with bulk materials, creation of earth embankments. The excavator is in demand in all branches of the mining industry, in the construction of roads, bridges and industrial facilities.

The main advantages of this excavator model are its balanced design; good maneuverability; the ability to use different modes of boom control - with smooth or powerful cutting; economical consumption of diesel fuel; high torque; closed center hydraulic system; Convenient, comfortable and safe work of the operator in an ergonomic cabin; simplicity and ease of maintenance. The interval for changing the oil filter of the hydraulic system was increased in this model from five hundred to one thousand hours, the interval for changing the oil in the engine and the engine oil filter - from two hundred and fifty to five hundred hours.

On Komatsu PC400-7, oil cooler and radiator can be easily removed and installed. Convenient and easy access to the motor for checking and routine maintenance is provided. Thanks to the updated design of the attachment bushings, the lubrication interval of the parts has been increased (which is an additional option).

As part of standard configuration excavator Komatsu PC4OO-7 appear: automatic system engine warm-up, counterweight, electro-sound signal, right rear-view mirror, multifunctional color display, 2 working lights.

The high-performance air filter used in this special vehicle is similar to that used on more powerful excavators. It has a significant service life during long-term operation, provides reliable protection against clogging and (as a result) against loss of engine power. The progressive seal design contributes to increased operational reliability. Compared to the previous model of the Komatsu excavator of a similar class, the volume of the fuel tank has been increased: from 6O5 to 65O liters. diesel fuel... Additional special treatment of the fuel tank reliably and for a long time protects it from the formation of corrosive manifestations on the metal surface.

It was also possible to achieve an increase in the pressure head force of the handle: the ultimate force increased by 8%, 214 kN (21.8 t); and the force of cutting the soil with a bucket - by 9% to 275 kN (28 t). These values ​​are reached at maximum power. Added an additional option for a variable track gauge for the excavator. It greatly enhances lateral stability... Gap between swing frame and a caterpillar, the designers of Komatsu PC400-7 increased by 30%, thereby reducing the likelihood of damage to the swing frame when moving equipment on rocky and rocky soils.

The main and most common is the standard modification of the Komatsu PC4OO-7 excavator - with a 1.9 cubic meter rock bucket (on which a 2.1 cubic meter bucket can also be installed).

A special version is also offered for the operation of a heavy special vehicle in harsh low-temperature natural and climatic conditions (up to -5O degrees). It differs from the standard by the presence of rubber products made of special materials that do not “tan” and retain all their elasticity parameters in severe frost. In particular, the hydraulic drive uses high-pressure cuffs and sleeves that remain elastic in the cold. And also - the presence of liquid preheater"Mikuni", which, together with the engine coolant, heats up the entire engine compartment of the excavator.

Since 2016, there is also a special modification in production for quarry work, the main feature of which is a special rock bucket with a volume of 2.8 cubic meters as standard. This is the Komatsu PC400LC-7 excavator - a powerful earthmoving machine with the highest cutting force in its class, a special tool for performing a significant amount of work related to excavation of different degrees of soil density and loading of these materials.

Komatsu PC400LC-7 in operation.

The heavy-duty rock bucket with a volume of 2.8 m3 is standard attachment for the PC4OOLC-7 SE excavator. The mass of this bucket is 2.36 tons. It has a special teardrop shape, for an optimal trajectory of movement and the least friction on the ground, with a decrease in the loads on the main working bodies - the hydraulic drive and the engine.

The Komatsu PC400LC-7 SE modification is designed to be introduced into the quarry production chain, in which road dump trucks with a carrying capacity of up to forty tons are involved. This excavator requires six working cycles to fill a standard 18 m3 tipper body and 8 working cycles to fill a 24 m3 body.

A six-cylinder is installed on the Komatsu PC400-7 excavator diesel engine SAA6D125E turbocharged liquid cooled direct diesel injection system. The working volume of this engine is 11, J4 liters. Rated speed - 1 85O rpm. Power unit power - 255 kW, or З47 Horse power... When the economy mode is activated, the diesel fuel consumption is reduced by approximately 20% compared to the Komatsu PC400-6 model. The cylinder diameter is 125 mm. The piston stroke is 15O mm.

The required performance level in combination with economical diesel consumption can be achieved thanks to the presence of two modes of operation. The first mode - active - implies maximum performance. Thanks to the extra high power function (with a response time of 8.5 seconds), the cutting force is greatly increased. The second - economical - is designed for light operating conditions and allows you to work at the same speed as in active mode, but with much lower diesel fuel consumption. Savings are achieved by optimizing diesel injection using electronic control injection of a fuel mixture.

According to indicators of environmental safety this engine meets the requirements of EPA, EU and Japan Tier 2 (Tier 2) standards for air emissions.

The central frame of the Komatsu PC4OO-7 excavator has a cruciform shape, the frame tracked vehicle- box structure. The caterpillar track is of the compacted type. The track tension regulator is hydraulic. On each side, 46 shoes are installed (for PC4OO-7), or 49 shoes (for Komatsu PC4OOLC-7); two carrier rollers and 7 track rollers each (for PC4OO-7), or 9 track rollers (for Komatsu PC4OOLC-7).

Strengthening the lateral stability and increasing the carrying capacity (in comparison with its predecessors) is achieved due to the significant mass of the counterweight (ZZO kg) and the verified balance of the body of the heavy special vehicle. The likelihood of damage to the lower section of the swing frame when traveling over rocky or stony terrain has been reduced by increasing the gap between the swing frame and the track by up to thirty percent.

As an additional option, the manufacturer offers a variable track width. Its expansion significantly increases lateral stability. And the reduction of the track gauge is done to fully comply with the requirements for the transportation of heavy special equipment.

This special equipment is equipped with hydraulics of the Hydrau Mind trademark. It is characterized by a closed center, 2 variable transmission (variable power) pumps and an electronic control system. Thanks to this modern hydraulics, the power characteristics of the engine are optimized, as well as hydraulic losses during operation and the total consumption of diesel fuel are reduced. The highest hydraulic flow rate is 616 liters per minute of hydraulic operation, and the pressure reaches 355 kg per square centimeter.

The swing system is equipped with a hydrostatic drive. A planetary gear is used as a platform reducer. The circle is lubricated by an internal oil bath. A hydraulic lock acts as a service brake. A special brake is applied for the transport position, and a mechanical disc brake is used to block the swing of the platform. The platform turns at nine revolutions per minute.

The cabin volume has been increased by 14 percent in this model compared to the Komatsu PC400-6 excavator. It was possible to achieve a decrease in vibration load at floor level - from 12O to 115 deciBells. This result was achieved by the revision of the cab damper system, which used a long stroke and an additional spring. Plus, the left and right cockpit panels were also reinforced. The blind working areas have been significantly reduced - by 34 percent: the right window pillar has been completely removed and the shape of the rear pillar has been significantly changed.

The installation of vibration-reducing damper devices that she gave reduced the fatigue of the excavator operator and created a more comfortable working environment. The Komatsu PC4OO-7 cab is well sealed, therefore, it is adequately protected from dust and noise loads. The cab is reliably protected by a rigid frame from heavy objects falling onto it. The degree of protection of the operator's workplace corresponds to the second class according to IS0 1О262.

An automatic air conditioner is optional, as is a beverage cooler / warmer. An air conditioner with a capacity of 6.9 thousand kcal is used, which works both for cooling and heating. Its two-level function allows airflow to be directed to both the face and feet of the operator. The cab has a washable floor mat with flanges and drain holes for easy draining.

Proportional pressure multi-position control handles are multifunctional and multi-position, delivering consistently high precision across the entire range of operating procedures. The ergonomics of the arrangement of the controls in the excavator cab have been verified and thought out to the smallest detail, based on many years of production experience. The operator can move the chair forward and backward, as well as the control levers. Thanks to the double sliding mechanism, the chair and the control levers can be moved together or separately. As a result, the operator can position the levers to provide optimum control and comfort for himself. The backrest can also be reclined until it is completely horizontal.

The manufacturers say the PC400-7 has the most advanced diagnostic system in the industry. This Komatsu system identifies maintenance positions, reduces diagnostic time, indicates the right time to change oil and filters, and displays possible error codes. The machine is monitored continuously.

The main equipment of the Komatsu PC400-7 excavator is a bucket, a backhoe. The boom has two modes of operation. One of them is smooth mode. The presence of this mode simplifies the collection of soil and rocks with a bucket after the explosion and (or) the leveling of the site. When the need arises for the maximum force of cutting the soil, then in order to increase the productivity of the excavator, its transition to the power mode is carried out. The cutting force of the boom is increased, and the efficiency of excavation of trenches and foundation pits on hard ground is increased. The boom of the PC4OO-7 rises smoothly, practically without lifting the front part of the excavator from the ground.

To ensure the versatility of the Komatsu PC400 excavator, it is envisaged to install additional working bodies on it, namely: a grab bucket; single-shank ripper for cutting and crushing rocky and hard soils, removing road surfaces, etc.; a bucket with a ripper for hard (frozen) and rocky soil; forks; hydraulic equipment: hammer or drill; vibration equipment: plunger and rammer.

Specifications in numbers

• Overall dimensions: transport length 11.94 m, overall width - 3.34 m, overall height - 3.635 m.
• Operating weight - 41.4 tons.
• Track width - 6OO mm.
• Maximum digging depth - 7.82 m.
• The highest cutting height of the soil - 1O, 91 m.
• The highest unloading height is 7.565 m.
• The maximum possible depth of the vertical pit wall is 6.78 m.
• The maximum possible cutting radius of the soil is 12, O25 m.
• Travel speed - 3-5 km / h.
• Ground pressure - O, 79 kg / cc.
• Stick length - 3.38 m.
• Boom length - 7, O6 m.
• Volume refueling tanks: fuel tank- 65O l, coolant - Z4.2 l, engine oil in the engine - 38 liters, final drive, on each side (travel reducer) - 12 liters, platform swing drive (swing reducer) - 16.2 liters, hydraulic tank - 248 liters.

The Komatsu PC400 crawler excavator is one of the best construction machines manufacturer Komatsu. From the entire line of special equipment given car highlight excellent performance characteristics, including a large digging radius and maximum depth of cut in soils. The manufacturer has equipped the excavator with innovative solutions and advanced design developments, which significantly increased the reliability of the equipment. The excavator assembly process is carried out by automated equipment, as a result of which the high quality of the entire Komatsu PC400 was ensured.

Under the hood of the Komatsu 400, a six-cylinder diesel engine of the SAA6D125E-3 brand is installed. It uses direct fuel injection into the combustion chambers and a turbocharging system that allows it to develop a rated power of 255.22 kilowatts or 347 horsepower. The engine came out reliable and resistant to high loads. Its service life is designed for a fairly long service life. Technical malfunctions and malfunctions are resolved directly on site, since the design of the excavator provides full access to those parts and elements that require regular inspection.

On Russian markets this excavator holds a leading position in sales, as it surpasses some imported counterparts in technical performance, however, the cost is the same, but sometimes it is slightly lower.

Navigating the article

Appointment

The machine is versatile and therefore ideal for almost all areas of work. The excavator is in demand in the construction of any facilities, mining, metallurgical industries, oil and gas production companies, as well as in many other industries.

The excavator performs work such as filling holes and depressions; development of quarries and wells; loading and unloading of various bulk materials; digging trenches, ditches and ditches; the creation of embankments of soil and other materials in certain places; dismantling of any concrete structures; as well as road maintenance, but in this area the car is used extremely rarely.

Attachments

The wide purpose of the Komatsu 400 crawler excavator is due to the wide range of various attachments... The machine is able to function with the following additional units:

1. Digging buckets. This type equipment is basic and there are several models, distinguished by the type of work being done (digging loose soil or rock), width, total capacity, weight and number of teeth on the lower cutting edge. The installation of the units is carried out literally in a matter of minutes.
2. Clamshell buckets. Such units are mostly used for loading operations, for creating embankments of soil and cleaning the working area from industrial debris. But in addition to this, they are also intended for excavation work with soils of the first and second density categories. To perform more accurate work, there are models equipped with a special rotator that allows you to rotate the equipment 360 degrees.
3. Loosening equipment. It is an irreplaceable tool in the mining industry, as it loosens hard soil. In addition, it can also be used for dismantling purposes.
4. Capture of pallet-type cargo. The main purpose of such equipment is to carry out loading and unloading of various pallet materials.
5. Hydraulic breaker. The scope of this unit is quite wide, namely, it is often used to destroy concrete or reinforced concrete structures, to loosen rocks and hard rocks of the soil, as well as to remove the asphalt layer of roads. Some models of equipment are equipped with a special rotator, which allows more precise work.
6. Hydraulic drilling equipment. This type is used for drilling various wells and loosening rocks. It is used both in construction and in various industrial sectors. Installed to the handle by means of a special adapter.
7. Vibration divers. There is a fairly large variety of this equipment, distinguished by size, weight and applied force. Designed for driving piles.
8. Vibrating ramming units. Like the previous equipment, this one has several models that differ in terms of weight, dimensions, speed of operation and applied force. The main purpose of rammers is to compact loose soils and other similar materials. Used in construction and road repair works.

Modifications

The Komatsu 400 crawler excavator is produced in a single version - the basic one. The manufacturer did not undertake the development of modified versions, since the base one came out quite successful, namely, it has a high power plant and hydraulic system, reliability, cabin comfort and, which is also important, versatility. The machine is versatile, not only with additional equipment, but also with its own standard.

Specifications

Dimensional data:

• Construction length - 11900 mm.
• The width of the tracked platform is 3300 millimeters.
• Cab height - 3900 mm.
• The ground clearance is 460 mm.
• The length of the handle is 2400 mm.
• The track width is 600 millimeters.
• The track width is 2740 mm.

Operating values:

• The constructional weight of the excavator is 41400 kilograms.
• The minimum turning radius for the rear of the platform is 3600 millimeters.
• Platform swing speed - 9 revolutions per minute.
• The highest climb is 35 degrees.
• The maximum digging height is 10,915 mm.
• The maximum digging depth is 7820 mm.
• The maximum unloading height is 7000 millimeters.
• The maximum digging radius is 11,000 millimeters.
• The greatest effort on the handle is 25,900 kilograms.
• The greatest effort on the bucket is 28,200 kilograms.
• The maximum pulling force is 329 kilonewtons.
• The specific ground pressure is 77.5 kilopascals.
• The greatest effort to penetrate the bucket into the ground is 252 kilonewtons.
• The greatest effort to penetrate the bucket into the ground (with a standard handle) - 198 kilonewtons.
• Attachment type (standard) - earth-moving bucket.
• The volume of the digging bucket is 1900 cubic millimeters.

Engine:

• Engine type - in-line, diesel.
• Engine brand - SAA6D125E-3.
• The type of fuel injection system is electronic, direct.
• The titanium of the turbocharging system is gas turbine.
• Cooling system type - liquid, with forced circulation.
• The rated output power is 255.22 kilowatts / 347 horsepower.

Brakes:

• Service brake type - hydraulic lock.
• Type of parking brakes- mechanical, disk.

Excavator tank capacity:

• The fuel tank is 650 liters.
• Cooling system - 34.2 liters.
• Hydraulic tank - 248 liters.

Peculiarities

The Komatsu PC400 crawler excavator has a fairly large number of different improvements, namely:

1. Cab space has been increased by 14 percent, which has a positive impact on operating comfort. The increased volume allows the operator's seat with headrest to tilt to virtually all required positions.
2. High-quality vibration and noise insulation materials are used, due to which a fairly low level extraneous noise during operation arising from unloading operations, turning the platform, as well as the engine.
3. The cab frame uses high-strength metal to increase safety and protect the operator. Moreover, in basic configuration optional overhead guards (roof mounted) and operator guards can be included.
4. The cabin is pressurized, equipped with an air conditioning system and an air filter. Due to this, it was possible to avoid the ingress of dust into the cabs, which also affects its comfort.
5. Special safety guards on the top of the cab meet the requirements of the second level of ISO 10262.
6. The cab uses improved dampers to significantly reduce vibration generated from the crawler platform while traveling.

One of the key features of the Komatsu 400 is that it handles various jobs with extraordinary precision. This is due to the proportional pressure multi-position implement control levers. In order for the operator to fully customize the cab for himself, the manufacturer installed a double-slide mechanism, the essence of which is to move the operator's seat and operating equipment control levers separately from each other.

In terms of technical characteristics and performance, there are also several interesting and useful advantages, namely:

• A certain type of work has its own performance requirements, so the Komatsu 400 hydraulic system was equipped with two special boom modes. The first mode involves making smoother and more accurate movements when the second is for cutting.
• For greater efficiency of the machine, the manufacturer increased the cutting force of the soil, which allowed the excavator to cope even with fairly hard rocks and soils.
• The hydraulic system has been modified and, as a result, the maximum lifting capacity has been significantly increased.
• For work with heavy weights or just on uneven surfaces there is a risk, then at some point the machine may lose its stability and topple over. To prevent this from happening, the entire structure of the excavator was changed. Thanks to this, stability has increased.

In terms of maintenance, the Komatsu PC400 excavator will not cause any inconvenience and special labor, since the following design solutions have been implemented for ease of maintenance:

1. The bushings of the equipment have a new redesigned design, due to which the lubrication interval of mechanisms and parts has been extended. Improved elements can optionally be installed.
2. The use of new filter elements in the design made it possible to significantly increase the intervals between the replacement of oil filters, hydraulic system filters and the power unit filter.
3. The turntable has several access power unit... When the hood is fully opened, the mechanic can reach almost all the elements of the engine.
4. The oil cooler and radiator are also redesigned for quick removal and installation.
5. A high-performance air filter is installed.

And finally, it should be mentioned such qualities of the car as:

• Maneuverability.
• Profitability.
• Sophisticated design.
• Ergonomic
• Resistant to environmental influences.
• The minimum amount of engine emissions into the atmosphere.

Video

Engine

Under the hood of the Komatsu PC400 crawler excavator is located power point brand SAA6D125E-3. This engine has six cylinders with a diameter of 125 millimeters, which are arranged vertically in a row. The piston stroke is 150 millimeters. The total volume of all cylinders has a value of 10998 cubic milliliters. The engine is supplemented with a turbocharging system gas turbine type, which allows you to give out rather high indicators - the rated output power reaches 255.22 kilowatts or 347 horsepower. Design speed crankshaft is 1850 rpm.

The fuel injection system into the combustion chambers of this unit is electronic, direct. The cooling system, as in most other modern special equipment, is liquid with forced circulation of antifreeze.

Price new and used

The cost for the Komatsu PC400 excavator in a completely new technical condition starts at six million Russian rubles. The key factor affecting the final cost of the machine is the year of manufacture.

A supported model can cost an average of four million to five million Russian rubles. In this case, the operating time plays an important role in the cost, technical condition and the year of manufacture.

Rent of this excavator starts from 10 thousand and goes up to 12 thousand Russian rubles for one working hour. It is worth noting that this particular option is in greater demand than the previous ones.

The Komatsu PC400-7 crawler excavator was developed as the flagship model of the Japanese manufacturer. Special equipment is designed to perform a wide range of operations and is designed for any, including extreme environmental conditions. The model retains all the traditional properties of Japanese special equipment, it provides a significant level of comfort and safety for the operator.

Appointment and attachment

It is a crawler excavator that is designed for a range of operations. In particular, it applies to:

• quarrying;
• digging trenches, ditches and ditches;
• filling grooves;
• erection of embankments;
• carrying out loading of bulk cargo, as well as their unloading.

In this case, the model has the following limit indicators for performing various operations:

• maximum cutting height of the soil - 10.2 meters;
• the highest unloading height - 7 meters;
• permissible digging depth - 6845-8445 mm;
• excavator working radius - 11-12, 5 meters.

The attachment equipment of the Komatsu PS400-7 excavator is a bucket, grab or ripper. It is also possible to install other working bodies, including:

• gripper for pallet materials;
• hammer and drill (hydraulic equipment);
• rammers and plungers (referred to as vibration devices).

Special equipment has the following dimensions and weight:

• length - 11905-11995 mm;
• width - 3340-3440 mm;
• height -3265 mm to the top of the cab and 3635-3885 to the extreme point of the boom;
• burly clearance - 555 millimeters;
• weight of special equipment in the range of 41-44 tons.

Cabin

The crawler excavator cab has been improved over comparable designs.

The interior volume is 14% more than before, making the operator's presence inside the structure significantly more comfortable than before. It is possible for him to lean back and take a completely horizontal position.

The Komatsu PC400-7 developers have taken care of safety, the cab is equipped with both a guardrail to protect the operator and an additional top guard that can be installed at will.

Also, the space is protected from external hum, this is a low-noise design, as a result of which significantly less decibels reach the operator, including when the structure itself turns, unloads or its power plant operates. The more sealed cab also prevents dust from entering the interior. In addition, the structure is equipped with a damper that reduces the level of vibration that reaches the operator's chair.

The seat and levers inside the cab of special equipment have a double-type sliding mechanism, which makes it possible to adjust the position of the seat and levers of Komatsu PS400-7 either synchronously or separately. This allows the employee to install the controls for special equipment in such a way that it is most convenient for him. The control levers themselves are multi-position and are characterized by proportional pressure, which allows the operator to perform all actions of the crawler excavator with maximum accuracy.

Specifications

The crawler excavator is equipped with an engine of the same brand with the SAA6D125E-3 index. It is an in-line unit with six cylinders with a diameter of 125 millimeters. Its working volume is 11.04 liters. The power of the Komatsu PC400-7 engine is 347 horsepower (which is equivalent to 259 kilowatts), this figure it develops at 1850 rpm. The torque of the unit is 1570 Newtons per meter, this figure is achieved at 1500 rpm.

The engine consumes 18-28 liters of fuel per hour, depending on the intensity of work. The highest speed that special equipment is capable of developing is 5.5 km / h.

The excavator is controlled by two levers with pedals. The working brake of the device is a hydraulic lock.

Peculiarities

The crawler excavator has two modes of boom operation, namely cutting and smooth operation, which made it possible to increase the productivity of Komatsu PS400-7, since in all cases it is possible to choose the mode most suitable for the operation. The product has an increased indicator of the soil cutting force, and it also has a higher carrying capacity than its predecessors. In addition, the special equipment is characterized by increased stability, which is ensured by the improved structure of the counterweights.

Likewise, maintenance is facilitated for the model thanks to a range of solutions:

• access to the motor has been made more convenient, which makes it easier to study the unit;
• the radiator and oil cooler received a new design, which facilitates their dismantling and subsequent installation back;
• the performance of the air filter has increased;
• the design of the bushings for special equipment has been improved, which made it possible to extend the interval between lubrication of individual elements of special equipment;
• the period after which it is required to replace the filters in the hydraulic system and the Komatsu PC400-7 motor, as well as the oil inside the power plant, has increased.

In addition, another feature of the model is the appearance in it of the HydrauMind, a hydraulic system that has a closed center and two pumps with variable flow. This mechanism makes the best use of the power available from the vehicle's propulsion system, which reduces hydraulic losses and fuel volume.

The crawler excavator is suitable for use in the most difficult conditions. In particular, this special equipment excels in winter in areas with no infrastructure.

The flip side of the advantages of the PS400-7 excavator is that it is far from a budget model. The cost of Japanese special equipment is relatively high.

Prices

The price of the new excavator is currently approximately 28 million rubles. Used special equipment is available at prices ranging from three to ten million rubles. The exact price of an individual excavator is determined by the year of manufacture, the duration of operation and the current state.

Thus, the Komatsu PC400-7 crawler excavator is a productive Japanese special equipment, which is designed to perform a very wide range of operations in an equally high quality manner. The developers made sure that the model does not fail, even in difficult conditions, and the operator's comfort.

Video