G7 Surface Top Hammer Drilling Rigs
Technical parameters
| Item | Unit | ||
|
Drilling |
Hole diameter | mm | 76-115 |
| Hole depth | m | 25 | |
| Drill pipe (Dia*Length) | T51*3660 | ||
| Pipe storage capacity | pcs | 6+1 | |
|
Engine |
Brand | DCEC cummins | |
| Engine model | QSC8.3-C260-30 | ||
| Power | kW | 194 | |
|
Compressor |
Air delivery | m³/min | 6 |
| Air pressure | bar | 9 | |
| Compression | Single | ||
| Rotary | Max. rotation torque | N.m | 670 |
| Rotation speed | rpm | 0-340 | |
|
Tramming |
Tramming speed | km/h | 1.5/3.1 |
| Climbing angle | º | 20 | |
| Ground clearance | mm | 455 | |
| Oscillation angle | º | ±6 | |
|
Feeder |
Feed type | Hydraulic feed system | |
| Feed beam type | Aluminum | ||
| Feed length | mm | 4,220 | |
| Feed extension travel | mm | 1,400 | |
| Max. feed force | kN | 20 | |
| Max. pull out force | kN | 30 | |
|
Boom |
Boom lifting | º | Down 28/Up 33 |
| Boom swing | º | Left 25/Right 25 | |
| Bracket swing | º | Left 23/Right 92 | |
| Feeder tilt | º | 122 | |
| Hydraulic rock drill | Brand | Epiroc | |
| Model | 1750 | ||
| Power | kW | 18 | |
| Percussion pressure | Mpa | 20 | |
| Dimensions | Weight | kg | 14,500 |
| Length*width*height | mm | 11610*2550*3200 |
Case
At the construction site of Guizhou Xinpu new district express line, a GIA G7 equipment isbeing used for roadbed excavation and leveling. The section stratum is limestone and itshardness is about f=8-14. The structure is loess interlayer, cracks and hollows. The drilling depth of G7 drilling rig is 6 m, 8m and 10 m, the drill hole angle is 90 degrees, thehole spacing is 3m, and the row spacing is 3m. The G7 drilling rig uses 89mm drilling bitsand T51/3.66m drill pipes with a diameter of 0.57m/min. The efficient drilling performanceof G7 rig in complex strata provides a guarantee for timely completion of subgradeconstruction projects, and is well received by customers.
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