مهندسی بلدوزر کوماتسو D475A- 5

مهندسی بلدوزر کوماتسو D475A- 5

تاریخ : شنبه 23 فروردين 1393
نویسنده : mohamadaref


Bulldozer D475A-5 

ENGINE موتور

M. Mehrabi Expert

Heavy Machinery

Model                   Komatsu SAA12V140E-3

Type                      4-cycle, water-cooled, direct injection

Aspiration                           Turbocharged, air-to-air aftercooled

Number of cylinders                       12

Bore x stroke     5.51" x 6.50"       140 mm x 165 mm

Piston displacement       1,860 in³               30.48 ltr

Flywheel horsepower:                 

SAE J1349            899 HP  671 kW

DIN6270               890 HP  644 kW

Hydraulic fan at maximum speed              860 HP  641 kW

Rated rpm                           1900 rpm

Governor                            All-speed, electronic

Lubrication system:                        

Method                               Gear pump, force lubrication

Filter                      Full-flow and bypass combined

 

TORQFLOW Transmission    انتقال تورک فلو  

Komatsu TORQFLOW transmission consists of a water-cooled, 3-element, 1-stage, 1-phase torque converter with lockup clutch and a planetary gear, multiple-disc clutch transmission which is hydraulically-actuated and force-lubricated for optimum heat dissipation. Gearshift lock lever and neutral safety switch prevent accidental starts.

 

Gear      Forward               Reverse

1st          2.1 mph

3.3 km/h              2.6 mph

4.2 km/h

2nd        3.9 mph

6.2 km/h              5.0 mph

8.0 km/h

3rd         7.0 mph

11.2 km/h            8.7 mph

14.0 km/h

 

Final Drive        فاینال درایو

Double-reduction final drive of spur and planetary gear sets to increase tractive effort and reduce gear tooth stresses for long final drive life. Segmented sprocket teeth are bolt-on for easy replacement.

 

Steering System      سیستم راهبری

PCCS lever, joystick-controlled, wet multiple-disc steering clutches are spring-loaded and hydraulically released. Wet multiple-disc steering brakes are spring-actuated, hydraulically released, and require no adjustment. Steering clutches and brakes are interconnected for easy, responsive steering.

 

Minimum turning radius               15'1"      4.6 m

 

Undercarriage      شاسی

Suspension                         Oscillating equalizer bar and pivot shaft

Track roller frame                            Cylindrical, high-tensile-strength steel construction

Rollers and idlers                              Lubricated track rollers

K-Bogie Undercarriage                  Lubricated track rollers are resiliently mounted to the track frame with a bogie suspension system whose oscillating motion is cushioned by rubber pads.

Extreme Service Track Shoes                      Lubricated tracks. Unique seals prevent entry of foreign abrasives into pin-to-bushing clearances to provide extended service life. Track tension is easily adjusted with grease gun.

Number of shoes (each side)                     41

Grouser height:                               

Single grouser   4.1"        105 mm

Shoe width (standard)   28"         710 mm

Ground contact area      9,957 in²               64240 cm²

Ground pressure (Tractor)           18.5 psi 128 kPa

1.30 kg/cm²

Number of track rollers                 8

Number of carrier rollers                              2

Extreme service shoes  32"         810 mm

Additional weight            2,030 lb 920 kg

Ground contact area      11,360 in²             73290 cm²

Tractor ground pressure               16.4 psi 113 kPa

Extreme service shoes  36"         910 mm

Additional weight            4,030 lb 1830 kg

Ground contact area      12,762 in²             82340 cm²

Tractor ground pressure               14.8 psi 102 kPa

1.04 kg/cm²

Service Refill Capacities       ظرفیت و قابلیت پرشدن مجدد -  خدمات

Fuel tank             441 U.S. gal         1670 ltr

Coolant                72.6 U.S. gal        275 ltr

Engine  32.0 U.S. gal        121 ltr

Torque converter, transmission, bevel gear, and steering system             55.5 U.S. gal        210 ltr

Final drive (each side)    19.8 U.S. gal        75 ltr

Operating Weight       عامل وزن

Tractor weight

Including rated capacity of lubricant, coolant, full fuel tank, operator, and standard equipment. 184,290 lb            83590 kg

Operating weight

Including strengthened Full-U tilt dozer, giant ripper, steel cab, ROPS, operator, standard equipment, rated capacity of lubricant, coolant, and full fuel tank.       238,960 lb            108390 kg

Ground pressure             24.0 psi 166 kPa

1.69 kg/cm²

 

Hydraulic System      سیستم هیدرولیک

Closed-center load sensing system (CLSS) designed for precise and responsive control, and for efficient simultaneous operation.

 

Relief valve setting          3,980 psi               27.5 MPa

280 kg/cm²

Control valves (Spool control valves for Semi-U tilt dozer and Full-U tilt dozer):                  

Positions:                           

Blade lift                              Raise, hold, lower, and float

Blade tilt                              Right, hold, and left

Control valves (Spool control valves for variable digging angle multi-shank ripper and giant ripper.                           

Positions:                           

Ripper lift                            Raise, hold, and lower

Ripper tilt                            Increase, hold, and decrease

Hydraulic cylinders                          Double-acting, piston

Hydraulic cylinders

Number of cylinders       Bore      Bore

Blade lift / 2        7.09"      180 mm

Blade tilt / 1        9.84"      250 mm

Ripper lift / 2      8.86"      225 mm

Ripper tilt / 2      8.86"      225 mm

Hydraulic oil capacity (refill):                       

Semi-U tilt dozer              48 U.S. gal           180 ltr

U tilt dozer          48 U.S. gal           180 ltr

Ripper equipment (additional volume):                

Giant ripper        34 U.S. gal           130 ltr

Multi-shank ripper          34 U.S. gal           130 ltr

Features       ویژگی ها

Komatsu-integrated design for the best value, reliability, and versatility. Hydraulics, power train, frame, and all other major components are engineered by Komatsu. You get a machine whose components are designed to work together for higher production, greater reliability, and more versatility.

 

SAA12V140E-3 turbocharged aftercooled diesel engine provides a net output of 664 kW / 890 HP with excellent productivity. This machine is Tier 2 EPA, EU, and Japan emissions certified.

 

The Dual tilt dozer increases productivity while reducing operator effort.

 

Hydraulic driven engine cooling fan controlled automatically, reduces fuel consumption and operating noise levels.

Extra-low machine profile provides excellent machine balance and low center of gravity.

Preventative maintenance

  Centralized Service Station

  Enclosed Hydraulic Piping

  Modular Power Train Design

  Oil Pressure Checking Ports

Large blade capacities:

27.2 m³ / 35.6 yd³ (Semi-U dozer),

34.4 m³ / 45.0 yd³ (U dozer), and

76 m³ / 100 yd³ (Coal)

 

Automatic transmission with lockup torque converter increases speed and power to improve fuel consumption and productivity.

Track link with wedge ring reduces maintenance cost by making turning pins easier, with improved pin reuse.

Hexagonal designed cab includes:

  Spacious interior

  Comfortable ride with viscous cab damper mounting

  Excellent visibility

  High capacity air conditioning system

  Palm Command Control System (PCCS) joystick controls

  Pressurized cab

  Multi-position adjustable armrest

  Travel control console integrated with operator seat

 

KOMTRAX Plus provides efficient monitoring of machine conditions for maximum productivity.

Low noise

  Operator noise: 70dB(A)

(Engine at Hi, cooling fan at 70%, and air conditioner OFF.)

  Dynamic noise (outside): 110dB(A)

As per ISO 6395

Electronic Controlled Modulation Valve (ECMV) controlled steering clutch/brake system facilitates smooth and shockless steering operation.

Rear attachments (optional)

  Variable giant ripper

  Multi-shank ripper

  Counterweight

K-Bogie Undercarriage System improves traction, component durability, and operator comfort.

Track shoe slip control system reduces operator fatigue and improves undercarriage life.

Low-drive, long-track, eight roller undercarriage ensures outstanding dozing ability and stability.

Charts        نمودارها

Dimensions          ابعاد

 

Dozer Equipment          بلدوزر و تجهیزات

 

Travel Speed         سرعت حرکت

 

Standard Equipment      تجهیزات استاندارد

  Accessory sockets, 2 x 12V

  Air conditioner with heater and defroster

 

  Alternator, 90 ampere/24V

    Back-up alarm

  Batteries, 4 x 12 V, 200 Ah

  Blower cooling fan

  Decelerator pedal

  Double door wiper

  Dry-type air cleaner with dust evacuator and dust indicator

  Dual tilt dozer

  Eight-roller track frames

  Engine oil level sensor

  Engine prelubrication system

  Final drive case wear guard

  Heavy duty wiring harness

  Hinged front mask

  Hinged underguard with front pull hook

  Hydraulics for ripper

  Hydraulic track adjusters

  K-Bogie Undercarriage System

  KOMTRAX Plus

  Lighting system (six front/two rear)

  Light for ripper

  Lockup torque converter

  Lunch box holder

 

  Mirror, rear view

  Muffler with rain cap

  PCCS palm lever steering control

  Perforated front mask

  Radiator reserve tank

  Radio, AM/FM cassette

  ROPS, Heavy Duty

  Seat belt, 78 mm / 3"

  Seat, air suspension, fabric, high back, fully adjustable

  Segmented sprockets

  Shoes, 710 mm / 28" extreme service, single-grouser

  Starting motors, 2 x 7.5 kW/24V

  Steel cab

  Steps, heavy-duty and handles

  Sun visor

  TORQFLOW transmission

  Track roller guards

  Track shoe slip control system

  Warning horn

  Water separator

  Wet steering clutches

ROPS

Weight . . . . . . . . . . . . . . . . . 940 kg / 2,070 lb

Roof dimensions:

Width . . . . . . . . . . . . . . . . . 1940 mm / 6'4"

Height from compartment floor . . . . . . . . . 1872 mm / 6'2"

 Meets ISO 3471 and SAE J1040 APR88, ROPS standards

Steel cab:*

Weight . . . . . . . . . . . . . . . . . 455 kg / 1,000 lb

Dimensions:

Length . . . . . . . . . . . . . . . 1790 mm / 5'10"

Width . . . . . . . . . . . . . . . . . 1455 mm / 4'9"

Height from compartment floor to ceiling . . . . . . . . . . 1530 mm / 5'0"

 Meets ISO 3449 FOPS standard

 

 


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