CFG pile driver, also known as long spiral drilling rig, long spiral pile driver. This machine includes two parts: a hydraulic walking pile frame and a drilling system.

The pile frame adopts a hydraulic walking chassis with high degree of automation, capable of self-propelled walking and 360 degree rotation. It is equipped with four hydraulic support legs and one walking oil cylinder to assist walking and rotation, while increasing the stability of the entire machine during construction. It can be transported as a whole machine. The column is a foldable box shaped column with flange connection. The column adopts two high thickness masks and is bent using a large bending machine bending technology. It is welded through two welds, and four reinforcement bars are welded every 60cm inside the column to increase its torsional and bending resistance. The column is controlled by two variable amplitude hydraulic cylinders for takeoff and landing.

The drilling system includes a power head and drilling tools. The output shaft of the power head and the spiral drilling tool are hollow. The pile driver uses long spiral drilling to pump concrete or mud through the center pipe of the drill rod for CFG pile construction. This can be completed in one machine, and can also be used for dry drilling, grouting replacement, and deep mixing after changing the drilling tool.

The hydraulic walking pile frame of the machine is mainly composed of top pulley block, column, diagonal brace, chassis, traveling mechanism, slewing mechanism, winch mechanism, control room, hydraulic system and electrical system.

The column is a foldable structure with a box shaped cross-section and flange connection. Both sides of the column are equipped with circular or square slides as the power head, guiding the upward and downward movement of the drill pipe, and resisting torsion. This type of drilling rig is equipped with a box shaped foldable column that uses hydraulic cylinders for takeoff and landing, which is convenient and fast, and does not require disassembly during transportation. The lower part of the column is hinged with the hanging wall, the middle and rear parts are connected with the diagonal brace, and the top of the column is equipped with a pulley block to complete the takeoff and landing of the power head, reinforcement cage and concrete conveying pile machine hose. The power head can slide up and down along the slide and can be disassembled for transportation.