The HT81 (CYTJ45) model hydraulic rock drilling rig is widely used in numerous fields including small and medium-sized underground water conservancy and hydropower facilities, highway and railway tunnel construction, chemical mining, and other metal mining engineering. It has broad rock adaptability and can effectively handle hard rock conditions. The rig is equipped with a high-performance originally imported rock drill, capable of drilling holes with diameters ranging from φ45-64 mm, while also supporting cross-cut hole diameters in the range of φ76-102 mm. The rig features automatic translation functionality, a large left-right swing angle, and a wide up-down pitch adjustment range, ensuring a large drilling coverage area after a single positioning. The pusher can achieve 360° full vertical rotation, which not only ensures efficient and rapid cross-section tunneling progress but also ensures extremely high tunneling precision. With its outstanding versatility and high performance, it demonstrates significant advantages among similar competing products.
| Drill Rig Parameters | HT81(CYTJ45) | |||
| Applicable Cross-Section | 4000×4000—6100×6100mm | Minimum Turning Radius | Inner 3050mm Outer 5450mm | |
| Overall Dimensions | 12000×1850×2280(2880)mm | Gradeability | 14° | |
| Ground Clearance | 300mm | Travel Speed | ≤15km/h | |
| Total Weight | 13500kg | Diesel Tank Capacity | 120L | |
| Rock Drill Specifications | ||||
| Rock Drill | RC2200 | YYG18U | YYG22U | HC95LMa |
| Impact Power | 21kW | 18kW | 22kW | 21kW |
| Impact Frequency | 55Hz | 57Hz | 55Hz | 58Hz |
| Impact Pressure | 200bar | 220bar | 220bar | 200bar |
| Rotation System | Independent Rotation | Independent Rotation | Independent Rotation | Independent Rotation |
| Rotation Speed | 0-285r/min | 0-220r/min | 0-220r/min | 0-296r/min |
| Rotation Torque(Max) | 720Nm | 1050Nm | 1050Nm | 764Nm |
| Pusher | ||||
| Rock Drill | RC2200 | YYG18U | YYG22U | HC95LMa |
| Total Length | 5262/5972mm | 5262/5972mm | 5972mm | 5972mm |
| Drill Rod Length | 3700/4305mm | 3700/4305mm | 4305mm | 4305mm |
| Hole Depth | 3370/3930mm | 3370/3930mm | 3930mm | 3930mm |
| Weight | 630/660kg | 610/640kg | 640kg | 640kg |
| Feed Force | 13kN | 13kN | 13kN | 13kN |
| Boom | ||||
| Compensation Stroke | 1250mm | Pitch Angle | +60°/-30° | |
| Horizontal Hole | Full Coverage | Swing Angle | ±35° | |
| Pusher Rotation | ±180° | Boom Weight | 2015kg | |
| Water and Air System | Electrical System | |||
| YYG18U | RC2200/YYG22U/HC95LMa | |||
| Water Pump Max Displacement(12bar) | 4m³/h | Total Installed Power | 67.5kW 87.5kW | |
| Air Compressor Displacement | 1m³/min | Main Motor Power | 55kW 75kW | |
| Motor Drive | Voltage | 380V(Customizable) | ||
| Hydraulic System | Chassis | |||
| Hydraulic Pilot Proportional Control System | Engine | Dongfanghong Diesel Engine | ||
| Anti-Jamming Function | Rated Output Power(2200r/min) | 73.6kW | ||
| Normally Closed Parking Brake | Torque(1650r/min) | 319.5N.m | ||
Chassis platform compliant with Australian standards, integrating the protective platform columns and base plate into a single unit, certified to FOPS, with higher resistance to falling rock impact;
Equipped with an electro-hydraulic proportional control (PHDCS) system, preventing the rock drill from idling when encountering karst caves, fissures, and other conditions during drilling, providing comprehensive protection for the rock drill.
