Shank Adapter For Top Hammer pilot hole construction operation and matters needing attention:
    1. The water pump for cooling water should be started before drilling. The cooling water should be supplied continuously, and the oil temperature should not exceed the requirements of the operating instructions and operating procedures.
    2. The flushing fluid must be supplied before drilling. During drilling, attention should be paid to the changes in the flow of the flushing fluid flowing out of the hole and the discharge of cuttings. If it is found to be abnormal, deal with it in time.
    3. When opening the hole, the drill rod should be centered with a brazing device, and the hole should be opened with a small pressing shaft and a slow speed. After the drilling depth reaches 0.5 meters, the shaft pressure can be increased as appropriate, and the speed can be increased. After the drilling depth exceeds 3 meters, the drilling can be carried out according to the normal parameters.
    4. Adjust the drilling parameters (weight on bit, number of revolutions) according to the requirements of the construction organization design or operating regulations. When encountering special geological structures, you can appropriately change the drilling parameters based on experience.
 5. Before attaching the drill pipe, the drill must be raised to a height of 5-10 cm from the bottom of the hole to fully clean the hole. The cleaning time can be controlled according to the depth of the drilling at the time. If you are going to stop drilling, you must lift the drill to a safe position.