Our Company Sells Used Rotary Drilling Rigs！
Rotary drilling rig is a construction machinery suitable for drilling operations in building foundation engineering. It is mainly suitable for the construction of soil layers such as sandy soil, cohesive soil, and silty soil, and has been widely used in various foundation construction such as cast-in-place piles, continuous walls, and foundation reinforcement. The rated power of rotary drilling rigs is generally 125-450kW, the power output torque is 120-400kN · m, the maximum borehole diameter can reach 1.5-4m, and the maximum borehole depth is 60-90m, which can meet the requirements of various large-scale foundation construction.
This type of drilling rig generally adopts hydraulic track type telescopic chassis, self elevating foldable drilling mast, telescopic drill rod, with automatic verticality detection and adjustment, hole depth digital display, etc. The whole machine operation is generally controlled by hydraulic pilot and load sensing, and has the characteristics of easy operation and comfort. The main and auxiliary winches are suitable for various situations on construction sites. This type of drilling rig is suitable for drilling operations in dry (short spiral) or wet (rotary bucket) and rock formations (rock core drill) with different drilling tools. It can also be equipped with long spiral drills, underground continuous wall grabs, vibrating pile hammers, etc., to achieve various functions. It is mainly used in municipal construction, highway bridges, industrial and civil buildings, underground continuous walls, water conservancy, anti-seepage slope protection and other foundation construction. Domestic experts believe that rotary drilling rigs will still have a large market in China in the coming years.
The principle of choosing a rotary drilling rig should be to meet the main engineering needs of users while taking into account possible engineering requirements. Rotary drilling rigs can be classified into three types based on their main working parameters: torque, engine power, drilling diameter, drilling depth, and overall quality of the rig:
Torque of 100kN · m. The engine power is 170kW, the drilling diameter is 0.5-1m, the drilling depth is about 40m, and the total weight of the drilling rig is about 40t. The application market positioning of mini computers:
(1) Slope protection piles for various buildings;
(2) Partial load-bearing structural piles of the building;
(3) Various piles with a diameter less than 1m for urban renovation and municipal projects;
(4) Suitable for piles used for other purposes. The market workload coverage of mini computers has reached over 30%.
medium-size computer
The torque is 180kN · m, the engine power is 200kW, the drilling diameter is 0.8-1.8m, the drilling depth is about 60m, and the total weight of the drilling rig is about 65t. Market positioning of mid-range computer applications:
(1) Bridge piles for various transportation facilities such as highways and railways;
(2) Large buildings, load-bearing structural piles for ports and docks;
(3) Elevated bridge piers within the city;
(4) Other applicable piles. The market workload coverage ratio of medium-sized computers has reached over 90%.
mainframe
Torque 240kN · m, engine power 300kW, drilling diameter 1-2.5m, drilling depth 80m. The total weight of the drilling rig is over 100t. Market positioning of mainframe applications:
(1) Extra large bridge piles for various highways and railway bridges;
(2) Special structural load-bearing foundation piles for other large buildings. The market workload coverage of mainframes exceeds 10%.