How to ensure the verticality of rotary drilling rig
To ensure that the verticality should pay attention to what time?:1, drill mast verticality should be controlled within 0.2 degrees.2. The gap between the power head and the drill mast must not be too large.3. The center of the follow-up frame of the drill rod shall be in accordance with the center of the power head.4, not square drill pipe and drill pipe deflection.5, the lower protective cylinder should be vertical.6, bit square box and the central cone cannot skew.7, for the big changes in the bottom, it is recommended to use straight cylindrical bit.
What time should I pay attention to?:1, drill mast verticality should be controlled within 0.2 degrees.2. The gap between the power head and the drill mast must not be too large.3. The center of the follow-up frame of the drill rod shall be in accordance with the center of the power head.4, not square drill pipe and drill pipe deflection.5, the lower protective cylinder should be vertical.6, bit square box and the central cone cannot skew.7, for the big changes in the bottom, it is recommended to use straight cylindrical bit.
Rotary drilling rig is a kind of construction machine suitable for drilling operation in building foundation engineering. Mainly suitable for sand, clay, silty soil layer construction, bored pile, continuous wall, foundation reinforcement has been widely used in various foundation foundation construction, the rated power of rotary drilling rig is 125 ~ 450kW, the power output torque of 120 ~ 400kN / m, the maximum diameter of Kong Zhi is 1.5 to 4m. The maximum hole depth is 60 ~ 90m, can meet the requirements of all kinds of large-scale infrastructure construction.
