Excavator-Mounted DTH Drill Rig
A versatile, hydraulic-powered drilling solution converted from standard excavators, this rig combines the mobility of excavators with the high-efficiency rock-soil drilling performance of DTH (Down-the-Hole) technology.
It leverages the excavator's existing hydraulic system to drive the DTH hammer, rotary motor, and propulsion mechanism, enabling impact-crushing + rotary slag-discharge cycles: the hammer delivers high-frequency impact to break rock/soil, while the rotating drill pipe (with spiral blades) removes debris, forming precise boreholes.
Ideal Applications
- Slope & Tunnel Support: Anchor holes, advance small pipe holes for foundation reinforcement
- Foundation & Energy: Boreholes for photovoltaic piles, small building cast-in-place piles
- Mining & Quarrying: Blasting holes for ore extraction, splitting holes for stone (marble/granite) quarrying
- Geotechnical & Infrastructure: Sampling holes for geological exploration, grouting holes for disaster control, pre-drilling for water conservancy projects
This rig offers the dual advantages of "one-machine multi-use" (retaining excavator functions) and high drilling efficiency, making it a cost-effective, flexible choice for construction, mining, and infrastructure projects.
Technical Specifications
| Drilling Performance |
| Drilling Diameter |
80mm - 200mm (Adjustable based on drill bits) |
| Drilling Depth |
Max. 20m (Extendable with extra drill pipes) |
| Drilling Medium |
Hard rock, soil, gravel, marble, granite (Suitable for medium to high hardness materials) |
| Impact Frequency |
300 - 500 times/min (Hydraulic-driven, adjustable) |
| Hydraulic System |
| Working Pressure |
16 - 25 MPa (Matching excavator's hydraulic system) |
| Flow Rate |
80 - 150 L/min (Stable power supply for drilling components) |
| Hydraulic Oil Type |
ISO VG 46 Anti-wear Hydraulic Oil (Adapt to -20℃ ~ 60℃ working temperature) |
| Rotary System |
| Rotary Speed |
0 - 80 rpm (Stepless speed regulation) |
| Rotary Torque |
1500 - 3500 N*m (Ensures stable drilling in hard rock) |
| Mechanical Structure |
| Overall Weight |
800 - 1200 kg (Easy installation on excavators) |
| Drill Pipe Length |
1.5m / 2.0m (standard) (Customizable length available) |
| Installation Type |
Quick Coupling (Compatible with most excavator models) |
| Operating Conditions |
| Working Temperature |
-20℃ ~ 60℃ (Suitable for outdoor construction) |
| Humidity Resistance |
IP54 (Dust and water splash protection) |
Frequently Asked Questions
Q1: What types of excavators is this drill rig compatible with?
It adopts a quick coupling installation design, which is compatible with most standard excavator models on the market. The rig matches the excavator's hydraulic system (working pressure 16-25 MPa, flow rate 80-150 L/min) to ensure stable power output. No major modifications to the excavator are required during installation.
Q2: What is the maximum drilling depth and diameter it can achieve?
The standard maximum drilling depth is 20m, and it can be extended further by adding extra drill pipes (standard drill pipe lengths are 1.5m and 2.0m, with customizable lengths available). The drilling diameter ranges from 80mm to 200mm, which can be adjusted by replacing different drill bits according to construction needs.
Q3: Which materials can this drill rig handle?
It is suitable for drilling in various media, including hard rock, soil, gravel, marble, and granite. With a hydraulic-driven impact frequency of 300-500 times/min and rotary torque of 1500-3500 N*m, it performs well in medium to high hardness materials, meeting the needs of multiple engineering scenarios.
Q4: Does it retain the original function of the excavator after installation?
Yes. This rig features a "one-machine multi-use" advantage. The quick coupling design allows for easy installation and disassembly--after removing the drill rig, the excavator can resume its original digging and loading functions. This greatly improves equipment utilization and reduces construction costs.
Q5: What hydraulic oil should be used for the drill rig?
It is recommended to use ISO VG 46 anti-wear hydraulic oil, which is compatible with the excavator's hydraulic system. This type of oil can adapt to a working temperature range of -20℃ to 60℃, ensuring stable operation of the hydraulic components in different outdoor environments.
Q6: Is the drill rig easy to maintain?
Yes. Its overall weight is only 800-1200 kg, making daily inspection and maintenance convenient. The core components (DTH hammer, rotary motor, etc.) are designed with durability in mind, and regular maintenance mainly includes checking hydraulic oil levels, tightening connections, and replacing worn drill bits--no professional and complex maintenance procedures are needed.
Q7: Can it be used for indoor or narrow-space construction?
It depends on the size of the excavator it is mounted on. Thanks to the excavator's flexible maneuverability, the drill rig can adapt to most outdoor construction sites. For narrow indoor spaces, it is recommended to match small-sized excavators to ensure operational flexibility while meeting drilling requirements.
Q8: What safety protection does the drill rig have?
The rig has an IP54 dust and water splash protection rating, suitable for harsh outdoor construction environments. The hydraulic system is equipped with pressure stabilization and overload protection functions to prevent component damage caused by excessive pressure. In addition, the stepless speed regulation of the rotary system allows for smooth operation, reducing safety risks during drilling.
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