Rotary Drilling Rig

Rotary drilling rig is a kind of construction machinery suitable for drilling opetations in building foundation engineering. Mainly suitable for the construction of soil layers such as sandy soil, cohesive soil, and silty soil, it has been widely used in various foundation construction projects such as cast-in-place piles, continuous walls, and foundation reinforcement. The rated power of rotary drilling rig is generally 125-450kw, with a power output torque of 120-400kn·m, the maximum drilling diameter can reach 1.5-4m, and the maximum drilling depth is 60-90m, which can meet the requirement of various large-scale foundation construction.

Small drilling machines can be classified into three types based on their main working parameters: torque, engine power, drilling diameter, drilling depth, and overall quality of the drilling machine.

Small drilling rig

The torque is 100kn·m, the engine power is 170kw, the drilling diameter is 0.5-1m, the drilling depth is about 40m, and the overall weight of the drilling rig is about 40t.

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 renovarion municipal projects;

4) piles suitable for other purposes, the market workload coverage of small computers reaches over 30%.

Medium-size rig

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 overall weight of the drilling rig is about 65t.

Market positioning for the application of medium-sized rotary drilling machines:

1) Bridge piles for various transportation facilities such as highways and railways;

2) Piles for load-bearing structures of large buildings and port terminals;

3) Elevated bridge piles in urban areas;

4) Other applicable piles. The market workload coverage of medium-sized computers has reached over 90%.

Large type drill

Torque 240kN · m, engine power 300kW, drilling diameter 1-2.5m, drilling depth 80m. The overall weight of the drilling rig is over 100t. Market positioning for the application of large rotary drilling rigs and machines:

(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 ratio of large-scale machines reaches over 10%.