Гусеничный экскаватор LiuGong 922E

Description
Cummins EPA Tier 4 final / EU Stage IV,
6-cylinder straight Variable-Geometry
Turbocharger (VGT), high pressure common
rail, electronically controlled direct injection.
Air cleaner: Cummins direct flow air filter.
Cooling system: Charge air cooler.
Emission rating
EPA Tier 4 final /
EU Stage IV
Engine manufacturer Cummins
Engine model QSB 6.7
Aspiration
Variable-Geometry
Turbocharger (VGT)
Charged air cooling Aftercooler
Cooling fan drive Viscous clutch
Displacement
6.7 L (1.8 gal)
6,700 cm³ (409 in³)
Rated speed 2,100 rpm
Engine output - net
(SAE J1349 / ISO 9249)
119 kW (160 hp)
Engine output - gross
(SAE J1995 / ISO 14396)
129 kW (173 hp)
Maximum torque
800 N·m (590 lbf·ft)
@1,500 rpm
Bore × Stroke
107 × 124 mm
(4.2” x 4.9”)
DRIVE AND BRAKES
Description
2-speed axial piston motors with oil disk
brakes. Steering controlled by two hand
levers with pedals.
Max. travel speed
High: 5.6 km/h (3.5 mph)
Low: 3.3 km/h (2.1 mph)
Gradeability 35°/70%
Max. drawbar pull 220 kN (49,458 lbf)
SWING SYSTEM
Description
Planetary gear reduction driven by high
torque axial piston motor, with oil disk
brake. Swing parking brake resets within five
seconds after swing pilot controls return to
neutral.
Swing speed 11.4 rpm
Swing torque 78,200 N·m (57,677 lbf·ft)
HYDRAULIC SYSTEM
Main pump
Type
Two variable
displacement piston
pumps
Maximum flow
2 × 224 L/min
(2 x 59.2 gal/min)
Pilot pump
Type Gear pump
Maximum flow 19 L/min (5 gal/min)
Relief valve setting
Implement
34.3/37.3 MPa
(4,975 / 5,410 psi)
Travel circuit 34.3 MPa (4,975 psi)
Slew circuit 25.5 MPa (3,698 psi)
Pilot circuit 3.9 MPa (566 psi)
Hydraulic cylinders
Boom Cylinder –
Bore × Stroke
Φ120 × 1,335 mm
(Φ4.7” × 4’5”)
Stick Cylinder –
Bore × Stroke
Φ135 ×1,490 mm
(Φ5.3” × 4’11”)
Bucket Cylinder –
Bore × Stroke
Φ115 × 1,120 mm
(Φ4.5” × 3’8”)
UNDERCARRIAGE
Track shoe each side 49
Link pitch 190 mm (7.5”)
Shoe width,
triple grouser
600/700/800/900 mm
(24”/28”/32”/35”)
Bottom rollers each
side
8
Top rollers each side 2
ELECTRIC SYSTEM
System Voltage 24 V
Batteries 2 x 12 V
Alternator 24 V - 70 A
Start motor
24 V - 7.8 kW
(24 V - 10.5 hp)
SERVICE CAPACITIES
Fuel tank 420 L (111 gal)
Engine oil 25 L (6.6 gal)
Final drive (each) 5.5 L (1.5 gal)
Swing drive 3.4 L (0.9 gal)
Cooling system 25 L (6.6 gal)
Hydraulic reservoir 210 L (55.5 gal)
Hydraulic system total 330 L (87.2 gal)
DEF tank 35 L (9.2 gal)
SOUND PERFORMANCE
Interior Sound Power
Level (ISO 6396)
69 dB(A)
Exterior Sound Power
Level (ISO 6395)
100 dB(A)
OPERATING WEIGHT 22,800 kg