Types of rock drilling machine accessories

Rock drilling machine accessories are the foundation for ensuring the efficiency and safety of rock drilling operations, mainly divided into six categories: drill tools, seals, impact components, fasteners, accumulator components, and lubricating hydraulic components.

Drill tools include drill tails, drill rods, drill bits, and connecting sleeves, which come into direct contact with rocks and wear out the fastest. When the drill tail thread is damaged, the impact end is "piled up" or cracked, it must be replaced in a timely manner, otherwise it will also damage the piston and guide sleeve.

Seals such as O-rings, water seals, seals, and gaskets are crucial for leak prevention. For most models, it is recommended to replace the entire set every 300-400 impact hours to avoid chain leakage caused by single piece aging.

The impact components include impact pistons, guide sleeves, drive sleeves, and rotating bushings, which can withstand high-requency impacts. The rotating bushing and stop ring usually need to be replaced preventively every 400 impact hours.

Fasteners such as long screws and side bolts are subjected to strong vibrations, and looseness or fatigue cracks can cause coaxiality deviation, and even complete machine disassembly. They should be replaced as a whole during major repairs.

The accumulator component includes a nitrogen diaphragm and an inflation valve group. Abnormal pressure can directly weaken the impact force, and regular testing and nitrogen inflation should be carried out according to the manual.

In addition, hydraulic oil, filter cartridges, and specialized lubricants for rock drills are also critical consumables. Oil contamination is the main cause of early failure of pistons and seals, and the filter element should be replaced according to the prescribed cycle and synchronously replaced.