Pre-work Inspection of Diesel Pile Drivers

Check the wire rope and all visible parts of the wire rope. When the wire rope has one of the following conditions, it should be replaced:

a. The surface of the wire rope is worn or corroded,

b. The steel wire rope loses its normal state (such as partial flattening, kinking, bending, cage distortion, extrusion of strands or wires, local increase in rope diameter, wavy shape, etc.).

c. The wire rope reaches the number of broken wires in Table 2 within the pitch;

d. The broken wires are concentrated in the rope length range or one strand whose diameter is less than 6 times of the wire rope diameter.

Check the power unit, hydraulic system, and electrical system, and follow the instruction manual.

Before the three piles are erected, the braking performance and connecting parts of the winch should be checked, and the erection operation procedures should be carried out according to the instructions.

After the four-pile frame is running, each mechanism should run without load, and check the indicated value of each instrument.

Pile guide rails should be greased as required.

Check whether the fuel oil, lubricating oil, hydraulic oil and cooling water of the Pile Driver meet the requirements of the manual.

The cooling water of water-cooled Diesel Hammer should be clean and soft water.

Check the working condition of the diesel hammer hanger and lubricate it; when the working surface of the starting hook end is worn more than 10mm, it should be repaired or replaced as required.

The screw plug at the cleaning hole of the cylinder hammer should be coated with graphite powder, and lubricating oil should not be used.

Check the cushion of the diesel hammer. When the contact surface is less than 30% of the original total area, or when the distance between the cylinder flange and the bottom of the lower piston is greater than the value specified in the manual, the cushion should be replaced.

Check the wear of the diesel hammer guide plate. When the wear of the guide surface is greater than 10mm, it should be repaired or replaced.

Check the connection between the diesel hammer and the pile cap. After raising the diesel hammer, when the length of the piston under the cylinder hammer does not meet the value specified in the manual, the length of the connecting wire rope should be adjusted.