Full Hydraulic Portable Pneumatic Dth Machine Low Fuel Consumption
full dth machine
,full dth drilling machine
,hydraulic dth machine
| Model | ST 400 |
|---|---|
| Max drilling depth | 400 Meters |
| Drilling diameter | 105-325 mm |
| Air pressure | 1.2-3.5 mpa |
| Rod length | 3 meter |
| Rod diameter | 89-102-114 mm |
| Main shaft pressure | 5T |
| Lifting force | 25T |
| Power head stroke | 6.6M |
| Max rotary torque | 12000 Nm |
| Max rotary speed | 100 r/min |
| Secondary winch lifting force | 3T |
| Jacks stroke | 1.5m |
| Moving speed | 2.5 km/h |
| Uphill angle | 21° Slope |
| Weight of the rig | 8.8T |
| The engine | 92KW / 6 cylinder |
| Overall dimensions | 3900*1600*2350 mm |
| Working condition | Loose layer and bedrock |
| Drilling method | Hydraulic rotary, down-the-hole impactor |
- Improves drilling efficiency and reduces labor intensity with hydraulic automatic feeding mechanism
- Easy to operate, safe and reliable with ball clip holding mechanism or hydraulic chuck, allowing rod changes without stopping
- Features hole bottom pressure gauge for easy monitoring of hole conditions
- Compact structure, concentrated handle, small footprint, light weight, strong decomposition, easy to move and operate in plains and mountain areas
- Select drill bits according to rock conditions (hardness, corrosion) and drill type (high wind pressure, low wind pressure). Different forms of alloy and cloth teeth are suitable for drilling different rocks
- When installing the drill bit, gently insert the bit into the drill bit sleeve of the impactor. Do not force collision to avoid damaging the drill bit
- Ensure sufficient air pressure on the drilling rig during rock drilling process
- Check compressed air system for intermittent work and ensure no rock slag in the hole during drilling
- If metal objects fall into the hole, remove immediately with magnet or other methods to avoid damaging the bit
- Monitor hole size when replacing drill bits. If bit diameter is worn but hole not completed, avoid using new bits to prevent sticking. Complete operation with worn bits of approximately same diameter
Preventive measures for hole collapse should meet two conditions: mud liquid column pressure = technological pore pressure; minimize water infiltration into rock and soil or water seepage around hole wall.
- Increase mud density and mud liquid column pressure to balance formation pressure
- Use larger ratio of mud to plastic to protect the hole
- Start pump gradually and maintain constant tension on drill pipe to avoid sudden pressure increases and violent impact on hole wall
- Design drilling track and reaming procedures according to underground obstacle distribution to avoid excessive curvature and rotary extrusion on hole wall
- Control mud density and rheological properties to maintain adequate liquid column pressure and low mud return velocity
Jinzhou Shitan Machinery Equipment Co., Ltd. Main Products:
Pneumatic Drilling Rig / Air Drilling Rig(ST-180,ST-200,ST-260,ST-300,ST-350,ST-400,ST450,ST-450,ST-500, ST-600,ST-800 and other Pneumatic water well drilling Rigs.), Crawler Water Well Drilling Rig / Trailer Mounted Drilling Rig / Water Well Drilling Rig / Hydraulic Borewell Machine / Hard Rock Drilling Equipment / Diamond Core Drill Rig / Geological Drilling Rig / Soil Testing Drilling Rig / Portable Water Well Drilling Rig(ST-30,ST-50,XY-1A, XY-1B, XY-2, XY-2B,GK180, GK200, GY150, GY200 and 30 impact drill rig, ZLJ series tunnel drilling rig and other geological drilling machines)Crawler Track Undercarriage, Drilling Mud Pump(BW150,BW160,BW200,BW250,BW850 series Drilling mud pumps), Drilling Air Compressor, Water Well Drill Bits(PDC Drill Bit, Tricone Bit, DTH Button Bit), Water Well Drill Pipe, Drilling Rig Spare Parts( drilling rods , drilling rods joint , casing pipe, casing coupling, core tube, core tube coupling, lifters, automatic drop hammer, sampler, SPT tool, wrench fork, pad fork, lock joint), Track Transporter
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