Introduction of Rotary Drilling Rig

Rotary drilling rig is a kind of construction machinery suitable for drilling operation in building foundation engineering. It is mainly suitable for the construction of sand, clay and silty soil. It has been widely used in the construction of cast-in-place piles, diaphragm walls and foundation reinforcement. The rated power of rotary drilling rigs is generally 125-450 kW, the power output torque is 120-400 kN.m, the maximum diameter of holes can reach 1.5-4 m, and the maximum depth of holes can reach 60-90 m, which can meet the requirements of various large-scale foundation construction. Ask.
This kind of drilling rig generally adopts hydraulic caterpillar telescopic chassis, self-lifting foldable mast, telescopic drill pipe, automatic verticality detection and adjustment, digital hole depth display, etc. The whole rig is generally operated by hydraulic pilot control and load sensing, which has the characteristics of easy operation and comfort. The main and auxiliary hoists can be applied to various situations in the construction site. This kind of drilling rig is suitable for dry (short screw) or wet (rotary bucket) and rock (core drill) drilling with different drilling tools. It can also be equipped with long screw drill, diaphragm wall grab, vibration pile hammer and so on. It can realize various functions, mainly for municipal construction, highway bridges, industrial and civil buildings, diaphragm wall, water conservancy, anti-seepage slope protection and other foundation construction. Domestic experts believe that there will still be a large market for rotary drilling rigs in China in the next few years.