A spiral pile driver operates like a giant electric screwdriver, its core function lying in the torque transmission of its power head:
A hydraulic motor drives the hollow main shaft to rotate, typically at 5-15 rpm.
The maximum torque can reach 200 kN·m, equivalent to the combined output of 200 family cars.
The power head is equipped with a planetary gear reducer, reducing engine speed by 20 times.
The hydrodynamics of the spiral blades: The specially designed spiral blades are key to efficient soil penetration:
Variable pitch design: The upper blades have a larger pitch for easy soil removal, while the lower blades gradually increase pitch to enhance load-bearing capacity.
Alloy steel material: Surface hardening treatment improves wear resistance by 3 times.
Self-cleaning structure: The wavy design of the blade edges reduces clay adhesion.
Intelligent control system: Modern models achieve precise digital control:
A verticality sensor provides real-time feedback on the tilt angle with an accuracy of 0.1 degrees.
Automatic torque adjustment prevents drill jamming.
The penetration curve of each pile is recorded in the cloud, generating a construction report.