A drilling boom is the articulated or telescopic arm component of a rock bolting rig that extends from the main chassis to position the drilling unit (drill head, feed, and rotation mechanism) at the required location and orientation for creating boreholes in rock surfaces. It provides the reach, stability, and precise positioning capability necessary for efficient and accurate drilling operations in mining, tunneling, and civil engineering applications. The boom is typically hydraulically actuated, using cylinders to control its extension, retraction, and articulation (lifting, lowering, swinging). It moves the attached drilling unit into position, holds it steady during the drilling process to maintain borehole alignment, and retracts it upon completion. Its design allows the rig to drill multiple holes from a single setup position. The boom is manufactured from high-strength steel, with a material grade of Q345B per GB/T 1591. Key parameters include a rated load capacity of 1500–3000 kg, a boom reach of 2.5–6.0 m, vertical travel of 1.5–4.0 m, swing angle of ±45° to ±90°, hydraulic flow rate of 40–80 L/min, positioning accuracy of ±5 mm, weight of 800–1500 kg, operating temperature range of -20°C to 50°C, and ingress protection rating of IP54–IP65 (per IEC 60529). These values are reference ranges and must be verified for the specific model and application. The drilling boom is a critical component for rock bolting rigs, enabling safe and efficient ground support installation. When selecting a drilling boom, consider the required reach, load capacity, and positioning accuracy for your specific drilling tasks. Verify that the boom's operating pressure and hydraulic flow rate are compatible with your rig's hydraulic system. Check the ingress protection rating to ensure it suits the working environment. Always confirm model-specific parameters and standards with the legal manufacturer or supplier before procurement.
The drilling boom is hydraulically actuated, using cylinders to control its extension, retraction, and articulation (lifting, lowering, swinging). It moves the attached drilling unit into position, holds it steady during the drilling process to maintain borehole alignment, and retracts it upon completion. Its design allows the rig to drill multiple holes from a single setup position.
