Model & Type PBHD-50, DTH Blast Hole Drilling Rig
CRAWLER MOUNTED BLAST HOLE DRILLING RIG :
CRAWLER MOUNTED BLAST HOLE DRILLING RIG (PBHD) :
Make: |
PHEL |
Model & Type |
PBHD-50, DTH Blast Hole Drilling Rig |
Capacity:
DTH Drilling |
4 inch (101 mm) up to max 50 meters depth.
Under favorable conditions |
Drill hole Diameter | 4 inch(101 mm) |
Drill rod Diameter | 3 inch (76.2 mm) |
Drill rod Length | 3 meter (10 Feet) |
Carrier
Crawler Capacity |
10 Tonnes |
Max. speed of equipment | 3.0 kmph |
Grad ability | 30 degree from horizontal. |
Grouser type | Single |
Grouser width | 310/450 mm |
Ground pressure | 0.78 kg-f/sq.cm |
Type of Drive | Independent Hydraulic Motor for each Track |
Drive system | Through planetary gear box with in-built braking. |
Prime Mover | The system shall be powered from diesel driven engine with the following capacity. |
Engine make | Ashok Leyland or any other reputed make |
Rated capacity | 50 PS @ 1500 rpm or equivalent |
Mast Assembly | Sturdy structural channel mast structure electrically welded. |
Mast overall length | 5000 mm |
Rotary head travel | 4000 mm |
Centralize opening | 6 inch (150 mm) |
Feed System
|
Feed and hoist operation will be achieved by hydraulic motor with chain and sprocket arrangement. |
Pull Back | 2200 kg-f |
Pull Down | 2200 kg-f |
Hoisting speed | (UP) 35 meter/ minute |
Reeving Ratio | 1:1
Feed system consists of hold back arrangement to control limit weight on bit, rapid and slow feed arrangement to suit variable ground condition. |
Rotary Head Assembly
(Top Head Drive) |
Fabricated steel body |
Torque | 180 kg-m |
Rotation Speed | Spindle rpm: 0-100
The RH unit travels on mast assembly to absorb sudden shock loads encountered during drilling operation. |
Hydraulics
|
The entire equipment is designed to operate at high temperature encountered in the normal weather conditions.
Open loop circuit with variable displacement piston pumps and proportional valves for feed and rotation. Diverted valves for auxiliary drives. |
Max operating pressure | 180 kg/cm2 |
Hydraulic Tank capacity | 350 liters. |
Filtration (Nom) – Return line | 10/25 microns
Cooling: Fin type oil to air. |
Control Panel |
All Necessary control and monitoring valves and gauges are installed at control panel located nearer to drilling point for driller convenience |
Auxiliary |
|
Stabilizer | Model: Hydraulically operated regular type |
Cylinder bore diameter | 100 mm |
Stroke | 500 mm |
No. Of Jacks | 2 Nos.
The jacks are provided with ‘reverse flow restricted’ valves to ensure safe operation. |
Boom Lifting, Swing, Tilting, Dumping, Rack Oscillation Cylinders |
For raising and lowering and swinging the Mast Assembly |
Water Injection Pump |
Hydraulically operated triplex water injection pump, for injecting water/foam with necessary piping and flow control valves |
Max. Flow | 30 liter/minute |
Max. Pressure | 40kg/cm2 |
Airline Lubricator
Make |
Spinc |
Capacity | 450 cfm @ 150 psi |
Air compressor | Two wheel trolley mounted Air Compressor. |
Make | ELGI |
Capacity | 450 cfm @ 150 psi |