A typical hydraulic power head can achieve primary motion and feed motion, and it includes power components for automatic workpiece cycling. Simple speed change transmission mechanisms come in various forms. The basic principle involves a motor driving a gear transmission mechanism to enable boring, milling, and drilling functions. Some have guide rails allowing linear movement within a small range. The core technology of a hydraulic pile driver’s hydraulic power head is the fully hydraulic power head. It utilizes a three-phase asynchronous motor to drive an axial piston hydraulic pump, providing power. The high-pressure oil output from the hydraulic pump flows to each working device via control valves, driving them to operate.

Compared with traditional power heads, the fully hydraulic power head offers the following advantages:

High Output Torque: It can effectively drill through cobble layers, strongly weathered rock layers, and hard geological layers, significantly expanding the construction scope of hydraulic pile drivers.

Load-Starting Capability: The power head can start under load. If the power head stops unexpectedly during drilling and piling, it can restart with the main pump motor under load, reducing the operator's workload and easing operation, unlike other power heads.

Variable Speed: Changes in formation resistance are fed back to the hydraulic motor of the power head through system pressure. The control mechanism of the hydraulic motor adjusts displacement based on pressure to maintain an appropriate speed for continuous drilling, demonstrating strong adaptability to different formations.

Reduced Weight: Compared to three-ring type power head reducers, the power head's weight is significantly reduced, minimizing the machine’s sway during drilling, effectively improving overall machine stability and ensuring construction safety.

Hydraulic Drive Design: The power head and the entire machine are designed with hydraulic drives, effectively reducing the mechanical vibration of the pile driver structure and extending the service life of the machine’s structural frame.