The KT9C type integrated open-air DTH drill rig is a highly efficient and energy-saving advanced drilling equipment carefully developed for small and medium-sized open-pit mining, quarry and infrastructure construction projects. It inherits the advantages of the KT7C drill rig, and at the same time injects new design concepts, so it has many characteristics:
1. The overall layout is more reasonable and easy to maintain.
2. Equipped with Cummins China III diesel engine to meet the national requirements for emissions and environmental protection.
3. The hydraulic pressure adopts a relatively independent multi-pump system and eliminates the shunt valve, which is more stable.
4. Equipped with Dr. Tang Yan’s 17/17 single-stage high air pressure screw compression system, it has an overwhelming advantage compared with the medium air pressure integral drilling rigs of other manufacturers.
5. The rocker – link boom system increases the luffing angle, can meet the needs of different working positions under various working conditions, and can drill low-level horizontal holes; the lateral arrangement of the carriage makes the working field better.
6. The two-speed propulsion system composed of a cylinder – plate chain and a two-motor two-speed gyrator can meet the requirements of different working conditions.
7. The rig has a low center of gravity and balanced distribution. It is equipped with a heavy-duty ” four wheels and one belt “, a large torque walking motor with mechanical/hydraulic double brakes, and the frame has a ±10° automatic leveling device, which makes it safe and stable when traveling.
8. The drilling rig is equipped with an efficient two-stage dry dust collection system, which greatly improves the working environment and conforms to the concept of energy-saving and environmental protection.
| Rock drilling hardness | f=6-20 |
| Drilling diameter mm | 90-125 |
| Economic drilling depth m | twenty-one |
| Walking speed Km/h | 2.5 |
| Gradeability | 25° |
| Ground clearance mm | 430 |
| Whole machine power kW | 194/205 |
| diesel engine | Cummins QSC8.3-C260-30/ Yuchai YCA08280-T300 |
| Screw machine displacement m 3 /min | 17 |
| Screw machine exhaust pressure bar | 17 |
| Overall dimensions (length × width × height) mm | 8100×2300×3000 |
| Heavy volume Kg | 10800 |
| Rotating speed of gyrator (double speed) r/min | 0-120 |
| Rotation torque N*m | 2800 |
| Maximum push-pull force N | 32000 |
| Boom lifting angle | Up 57° down 20° |
| Pitch angle of carriage | 114° |
| Slide angle | Right 35 ° left 95 ° |
| Lateral horizontal swing angle of carriage | Right -19° ～97° |
| Drill boom swing angle | Right 18 ° left 50 ° |
| Frame leveling angle | Up 10° Down 10° |
| Push length at a time mm | 3490 |
| Compensation length mm | 900 |
| Impactor | 45A |
| Drill pipe | φ76×3000mm |
| Dust catching method | Dry-type (hydraulic driven cyclone laminar flow type) |
