Hydraulic Drilling Jumbos, HT81 (for Tunneling)
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Our hydraulic drilling jumbo is equipped with a compact structure, small external dimensions, energy efficiency, low noise, multifunctionality, and high efficiency, enabling mechanized operations in rock tunneling and significantly improving excavation speed.
Suitable for tunneling operations in various underground passages and culverts, such as those in metal mines and hydropower projects, this equipment features a fully hydraulic drilling system and an anti-jamming function for drill steels.
The entire series of drilling jumbos offers excellent maneuverability, a small turning radius, and a climbing capacity of 14°, ensuring both construction efficiency and quality.
- Drifter
- Boom with double triangle floating support system
- Anti-jamming function
- Chassis with 4-cylinder diesel engine
- Feed
- Control system
| Model | HT81 | |||
| Applicable cross section | 4000x4000--6100x6100mm | |||
| Overall dimensions (L×W×H) | 12000x1850x2280（2880）mm | |||
| Ground clearance | 300mm | |||
| Overall weight | 13500kg | |||
| Min. turning radius | Inner: 3500 mm / Outer: 5480 mm | |||
| Gradeability | 14° | |||
| Speed | ≤15km/h | |||
| Hydraulic oil tank | 120L | |||
| Drifter | ||||
| Model | RC2200 | YYG18U | YYG22U | HC95LMa |
| Power | 21kW | 18kW | 22kW | 21kW |
| Frequency | 55Hz | 57Hz | 53Hz | 58Hz |
| Pressure | 120-220bar | 130-200bar | 180-200bar | 180-200bar |
| Slewing system | Independent | Independent | Independent | Independent |
| Slewing speed | 0-285r/min | 0-220r/min | 0-220r/min | 0-303r/min |
| Max. Torque | 720N.m | 1050N.m | 1050N.m | 764N.m |
| Feeder | ||||
| Total length | 5262/5972mm | 5262/5972mm | 5972mm | 5972mm |
| Drill rod length | 3700/4305mm | 3700/4305mm | 4305mm | 4305mm |
| Hole depth | 3370/3970mm | 3370/3970mm | 3970mm | 3970mm |
| Weight | 630/660kg | 610/640kg | 640kg | 640kg |
| Feed force | 13kN | 13kN | 13kN | 13kN |
| Drill boom | ||||
| Boom extension | 1250mm | |||
| Horizontal hole coverage | Full coverage | |||
| Boom rotation | ±180° | |||
| Boom (lift/tilt angle) | 60°/-30° | |||
| Boom swing angle | ±35° | |||
| Boom weight | 2015kg | |||
| Water and compressed air system | ||||
| Max. flow rate of pump (12bar) | 4m³/h | |||
| Air displacement of compressor | 1m³/min | |||
| Electric drive system | ||||
| Model | RC2000/YYG22U/HC95LMa | YYG18U | ||
| Total power | 85.5kW | 65.5kW | ||
| Main motor power | 75kW | 55kW | ||
| Rated voltage | 380V (customized) | |||
| Chassis | ||||
| Engine | Dongfanghong diesel engine | |||
| Rated power（2200r/min） | 73.6kW | |||
| Torque (1650r/min) | 319.5N.m | |||
| Hydraulic system | Hydraulic proportional control valves Anti-jamming function Fail-safe brake system | |||
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