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TECHNICAL CHARACTERISTICS
Distance between centre lines of the two crawler tracks ....4.8m
Crawler length between centreline of sprockets..............4.5m
Crawler width .................................................................0.7m
Conveyor length.............................................................. 22m
Conveyor width ..............................................................1.6m
Slewing motion of conveyor boom ..................................±15°
Height adjustment of conveyor boom ..............................1.5m
Forward adjustment of boom and superstructure .............0.8m
Feeding conveyor belt speed - variable..............1.0 to 1.5m/s
Crawler travelling speed .........................................30 m/min
Dead weight ............................................................41 tonnes
Maximum loaded weight ..........................................58 tonnes
Maximum ground pressure fully loaded................0.92 kg/cm²
Crawler unit is Poclain C300 CK undercarriage, independently driven crawlers
each with its own Hydraulic motors and gearbox.
FEEDER CONSTRUCTION
Head drum......................................................... 800mm dia.
Tail pulley...........................................................630mm dia.
Snub pulley........................................................400mm dia.
Idler rollers..........................................................133mm dia.
Carrying idler pitch...........................................................1m
Return idler
pitch.............................................................3m
• Rubber disc impact idleres are provided at the loading point.
• The drive and snub pulleys are rubber lagged.
• The tension is provided by a screw take up.
• Two independently driven rubber rollers are provided near the conveyor
head pulley for belt cleaning.
HYDRALIC SYSTEM
The hydraulic unit is driven by 100 HP cage motor. One side of the motor
shaft is connected to a variable displacement pump with electromagnetic
directional flow control to four different capacity outlets for the belt
conveyor drive. Maximum capacity:
120 to 160kg/cm²
The other side of the motor shaft is connected to a coupling gear with three
driven shafts which operate the following pumps:
• Two pumps for the crawler's movement (capacity 1251-135 kg/cm².
• One pump for the hydraulic jacks (capacity 1501-150 kg/cm².
• One pump for the servo controls (capacity 10L-20kg/cm².
The pumps are provided with pilot operated overload valves. The hydraulic
systems indudes a 1000L oil tank with pressure and suction oil filters and
a motorised fan cooling unit.
