The hollow grouting rock bolt is mainly composed of a closed hydraulic system. Its characteristics are mainly smooth operation, compact structure, reliable and durable work, convenient adjustment and flexible configuration. However, the requirements for anti-pollution performance are higher. This is because the system is contaminated. Impurities and fine particles in the oil can cause hydraulic components to wear out, block adjustment holes, shorten life, reduce work reliability, and reduce efficiency. In addition, the fault of the hollow grouting rock bolt has the characteristics of concealment, diversity, uncertainty and complicated relationship. It is not easy to find after the fault occurs, which seriously affects the normal operation of construction machinery and even mechanical accidents, causing losses to the construction unit.

In order to fully guarantee and give full play to the working efficiency of hollow grouting rock bolt, reduce the number of failures and extend the service life, it is necessary to make a comprehensive understanding and training of the machine before using the hydraulic system drilling rig, and the daily maintenance of hollow grouting rock bolts must be strengthened maintenance.

Generally, the daily maintenance inspections of hollow grouting rock bolt rigs include: visual inspection before work, such as whether the joint is loose, whether there is oil leakage, whether the pipeline is cracked, etc. Whether the oil temperature is normal, it should be operated under no load for more than 20 minutes when it is lower than 10 ? (especially during the winter season); the pump is started and checked after the start, and the pump should be started and stopped to start the oil to start the temperature rise makes the operation of each actuator flexible and then enters normal use. After the pump is started, it should also be checked whether there are any bad phenomena such as cavitation, overheating, and bubbles. When the rig is working stably, pay attention to the oil quantity, oil temperature, pressure, etc. At the same time, also pay attention to the working conditions of the actuator and control element, and pay attention to whether the system has oil leakage and vibration. 

The above is the maintenance method of the hollow grouting rock bolt. In the daily use process, correctly master these methods, so that the hollow grouting rock bolt can play a greater role and effect.

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