D Miningwell MWDL-350 DTH Crawler Type Pneumatic Core Drilling Rig Water Well Drilling Rig Ground Core Exploration Drilling Rig
MWDL-350 is a mechanically driven power head top drive, straight inclined dual purpose drilling rig.
well drilling depth:250m
NQ Wireline Coring Drilling Depth:600m
MWDL350 mechanical top drive drilling rig is a drilling equipment independently developed by the company
that integrates the functions of water drilling and air drilling,the
drilling rig adopts a5-speed manual car gearbox,which has a wide range of shifting,sensitive and convenient
forward and reverse switching,high transmission efficiency,and low power consumption.
It is greatly reduced,more efficient and energy-saving,which solves the difficulty of drilling with air DTH hammer in soil layers,and the construction efficiency of rotary drilling rigs in hard rock layers,gravel,and pebble layers.
low rate problem.
The mechanica jack is used to drive the power head to realize the functional integration of mud drilling and pneumatic down-the-hole hammer drilling
It can provide high speed 901rpm and high torque(maximum torque 10500N.m),when the drillingrigdrills
into the soil layer.It can use coreless composite chip or roller cone bit with mud drilling to perform
high-speed rotation in rock formations Drilling,and it can be matched with an air compressor and a
pneumatic down-the-hole hammer for impact drilling.In unstable formations,casing driling can be used to
form holes by using casing drilling tools.
The drilling rig adopts a long-stroke double-speed mechanism,a mechanical power head, and the stroke of the power head is 3500mm
Improve the dilingefficiency and reduce the occurrence of drill blocking and burning accidents.
The drilling rig adopts double-connected oil pumps to supply oil,and the hydraulic system uses the technology of diversion and confluence
Use a single pump when drilling,and use double pumps to merge when lifting and lowering the drill,so the power loss is small and the auxiliary time is short
Drilling rig spindle adopts mechanical transmission
The transmission efficiency is doubled,the power consumption is greatly reduced,and it is more efficient and energy-saving
| Drilling capacity | Drilling depth for water well | 350m(152mm~203mm) |
| Sample drilling 75mm Wireline coring N size | 800m | |
| Borehole (Drill bit) dia. | Ø75~Ø350mm | |
| Drilling angle350m(152mm~203mm) | 75-90° | |
| Drive head | Lifting capacity | 240kN |
| Thrusting capacity | 180kN | |
| Rotary speed RPM | Forward:27,51,93,129,156,193,247,437,737,901r/min | |
| Reverse:48,219 r/min | ||
| Max. Torque | 10500N.m | |
| Power Unit | Engine Model | YN33GBZ |
| Rated power/speed | 65kW/ 2400r/min | |
| Mechanical winch capacity | 7.5Ton | |
| Drill pipe | Drill pipe dia. | Ø50/ Ø60 / Ø76/ Ø89mm NQ/ HQ /PQ |
| Drill pipe length | 3000mm | |
| Mud pump | BW160/ BW200/ BW250 | |
| Air compressor | Air consumption | 16~35m3/min |
| Air pressure | 10.5~24.6bar | |
| Crawler chassis | Walking speed | 0~2 km/h |
| Climbing angle | Max. 25°~30° | |
| Dimension | Transport | 6300*2000*2600mm |
| Working | 7800*2400*3800mm | |
| Weight with steel crawler | 7500kg | |
