Liebherr T284 adalah salah satu truk tambang yang mengklaim sebagai truk tambang paling ringan dikelasnya.
Hal ini karena kombinasi teknologi electric drive system dan penggunaan lightweight frame. Tapi seringan-ringannya Haul Truck tetap saja hitungan beratnya menembus angka ribuan kilogram atau ratusan Ton.
Faktor keamanan sangat penting dalam dunia pertambangan dimana tempat Liebherr beraktifitas sehari-hari. Selain ROPS dan FOPS yang sudah menjadi fitur keselamatan wajib.
Liebherr juga dilengkapi berbagai fitur pendukung keselamatan lainnya seperti Payload overload warning, Anti-roll back feature active in forward and reverse, engine stop buttons di ruang operator dan at ground level, Traksi kontrol, dll.
Selain fitur diatas, fitur pendukung lainnya seperti sistem deteksi yang dapat memberitahu supir (operator) jika ada benda asing yang berada dekat dengan truk, ini berguna untuk mencegah agar truk tidak melindas mobil atau benda lain yang tidak mungkin terlihat dari ruang kabin.
Fatigue System ditambahkan untuk memonitor kondisi operator dari kemungkinan lelah dan konsentrasi terganggu saat truk sedang bergerak untuk meminimalisir kemungkinan kecelakaan akibat operator mengantuk atau kecapaian.
SPESIFIKASI LIEBHERR T284
1. SPESIFIKASI UMUM
2. CAB
3. BODY
4. FRAME
5. FLUID CAPACITIES
6. WEIGHT
7. SUSPENSION SYSTEM
8. ELECTRIC DRIVE SYSTEM
9. DUMP SYSTEM
Two double-stage, double-acting hoist cylinders with inter-stage and end cushioning in both directions. Electronic joystick with integrated engine high-idle switch and full modulating control in both extend and retract.
10. STEERING
Ackermann center point lever system, full hydraulic power steering with accumulator safety backup. Isolated from dump hydraulic system. Two double-acting hydraulic cylinders.
11. BRAKING SYSTEMS
Hal ini karena kombinasi teknologi electric drive system dan penggunaan lightweight frame. Tapi seringan-ringannya Haul Truck tetap saja hitungan beratnya menembus angka ribuan kilogram atau ratusan Ton.
Faktor keamanan sangat penting dalam dunia pertambangan dimana tempat Liebherr beraktifitas sehari-hari. Selain ROPS dan FOPS yang sudah menjadi fitur keselamatan wajib.
Liebherr juga dilengkapi berbagai fitur pendukung keselamatan lainnya seperti Payload overload warning, Anti-roll back feature active in forward and reverse, engine stop buttons di ruang operator dan at ground level, Traksi kontrol, dll.
Selain fitur diatas, fitur pendukung lainnya seperti sistem deteksi yang dapat memberitahu supir (operator) jika ada benda asing yang berada dekat dengan truk, ini berguna untuk mencegah agar truk tidak melindas mobil atau benda lain yang tidak mungkin terlihat dari ruang kabin.
Fatigue System ditambahkan untuk memonitor kondisi operator dari kemungkinan lelah dan konsentrasi terganggu saat truk sedang bergerak untuk meminimalisir kemungkinan kecelakaan akibat operator mengantuk atau kecapaian.
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SPESIFIKASI LIEBHERR T284
1. SPESIFIKASI UMUM
- Payload class : 400.00 tons
- Gross vehicle weight (GVW) : 661.00 tons
- Empty vehicle weight (EVW) : 261.00 tons
- Engine model : MTU 20V4000 C23
- Gross HP (SAE J1995) at 1900 rpm : 4,023 hp
- Emissions (USA/EPA) : Tier 2
- Gross HP (SAE J1995) at 1900 rpm (option 2) : 3,648 hp
- Emissions (USA/EPA) (option 2) : Tier 2
- Engine model (option) : Cummins QSK 78
- Gross HP (SAE J1995) at 1800 rpm : 3,500 hp
- Emissions (USA/EPA) (option 3) : Tier 2
- Drive system : Liebherr Litronic Plus AC drive system with IGBT Technology
- Max speed : 40 mph
- Tire sizes - standard : 56/80R63
- Tire sizes - optional : 59/80R63
2. CAB
- Deluxe cab with integrated ROPS, FOPS, and double wall design for optimum insulation.
- Fully adjustable air suspension operator seat with double lumbar support and full-size
- second seat for training requirements. Operator comfort controls include a tilt steering
- wheel, heater, defroster and standard AC. Real-time vital truck information is easily displayed to the operator and also recorded for download.
3. BODY
- Body sizes are custom designed to fit Customer requirements and specific applications. Please contact factory for options.
4. FRAME
- Design : closed box structure with multiple torque tube cross members, internal stiffeners and integrated front bumper. High strength steel castings are used in high stress areas
- Welding : frame girders welded inside and out with ultrasonic inspection aligned with AWS D1.1
5. FLUID CAPACITIES
- Standard fuel tank : 5,351 l / 1,414 gal
- Tank : 1,302 l / 344 gal
- System : 1,514 l / 400 gal
- Tank : 924 l / 244 gal
- System : 1,060 l / 280 gal
- Planetary gear sets, each (2) : 280 l / 74 gal
- Front wheels, each (2) : 60 l / 16 gal
- Grease tank : 54 kg / 120 lb
6. WEIGHT
- Payload 363 t / 400 ton : 363 t / 400 ton
- Gross vehicle weight (GVW) : 600 t / 661 ton
- Chassis weight 1) : 198 t / 218 ton
- Body weight : custom for each mine
- empty – front 50 % / rear 50 %
- loaded – front 33 % / rear 67 %
- Empty vehicle weight : 237 t / 261 ton
7. SUSPENSION SYSTEM
- Front : double A-arm with inclined king pin pivot, spindle and nitrogen over oil suspensions with integral damping
- Rear : three bar linkage comprised of triangular upper link plus two bottom drag links and nitrogen over oil suspensions with integral damping
- TIRE : 56/80 R63, 59/80 R63 2)
8. ELECTRIC DRIVE SYSTEM
- Control system : Liebherr Litronic Plus AC drive system with IGBT technology
- Control box : Liquid cooled power components, pressurized cabinet
- Main alternator : AC brushless, direct drive, forced air cooling
- Wheel motors : Litronic Plus AC induction motors, forced air cooling
- 54 km/h / 34 mph (with 43.7:1 gear ratio)
- 64 km/h / 40 mph (with 37.33:1 gear ratio)
- 45 km/h / 28 mph (with 53.33:1 gear ratio)
- Cooling system : variable speed AC motor with twin impeller radial cooling fans
9. DUMP SYSTEM
Two double-stage, double-acting hoist cylinders with inter-stage and end cushioning in both directions. Electronic joystick with integrated engine high-idle switch and full modulating control in both extend and retract.
- Dump angle : 49° (45° with optional kick-out switch)
- Cycle times : 56 secs
- Remote dump : quick disconnects for external power dumping (buddy dump) accessible from ground level
- Filtration : high pressure and return line filtration. Cleanliness level ISO 18/16/13
10. STEERING
Ackermann center point lever system, full hydraulic power steering with accumulator safety backup. Isolated from dump hydraulic system. Two double-acting hydraulic cylinders.
- Hydraulic accumulator : 170 l / 46 gal (piston type)
- Filtration : cleanliness level ISO 15/13/11
- Turning radius (ISO 7457) – tire centerline : 17.2 m / 56'5"
- Vehicle clearance radius : 19.95 m / 65'5"
11. BRAKING SYSTEMS
- Electric dynamic braking, forced air over quiet stainless steel grid resistors with dry disc service and secondary braking system.
- Electric dynamic braking : max. 4,500 kW / 6,035 HP full dynamic braking down to zero. Single pedal automatic brake blending with service brakes below 1 km/h
- Dynamic braking : speed control operator adjustable, automatically limits truck speed on downhill grade when set
- Adjustable speed limits : Automatic speed limits for empty and loaded truck adjustable for site requirements
- Traction control : Litronic Plus traction control system. Computer Controlled in propel and dynamic braking, forward and reverse, all-wheel speed sensing
- Service brakes front : single disc, wheel speed, five calipers per wheel
- Service brakes rear : dual discs per side, one caliper per disc, armature speed
- Hydraulic accumulators : 1 x 7.6 l (2 gal), x 3.8 l (1 gal), 1 x 26.5 l (7 gal) accumulators (4 in total), separate isolated accumulator For front and rear axle (piston type)
- Park brakes : spring applied, pressure released, one caliper per each rear disc
- Filtration : cleanliness level ISO 15/13/11