For companies that want to carry out impact and vibratory pile driving in addition to the usual lifting activities, all with the same machine, VDH can adapt a standard crane to a crane with a hanging leader. The crane retains its original function while also providing the flexibility and versatility of serving as a foundation piling machine. It offers tremendous range: the PD machine can operate forward- or backward-leaning, with a maximum inclination of 4:1, depending on the leader length. The leader can also be lowered, which makes the PD machine extremely suitable for work where scaffolding or a pontoon is used.
When a machine needs to be flexible and versatile as a hoisting crane yet must also serve as a heavier foundation machine with greater inclination positions than a PD piling rig, VDH offers the PDX machine. A standard crane is converted to a PDX piling rig while retaining its crane function. The PDX rig is able to achieve greater inclination because there are cylinders mounted on the boom that are anchored to the back of the machine. Outriggers at the rear allow the boom to lean backwards, beyond the dead centre. This gives the sliding table enough travel, and the desired inclination of up to 3:1 can be achieved.
Specially for civil engineering projects and other large infrastructure work, where even more capacity is needed than the previously mentioned PD and PDX machines, VDH has the XLR machine. This is a custom-made pile-driving/drilling rig, often based on a crane. The XLR machine’s long fixed leader, heavy-duty hanging point and high stability make it stronger and more multifunctional and therefore suitable for heavy foundation work. The special closed leader makes the machine suitable for drilling and, owing to the high tractive power, pipes can be pulled out of the ground effortlessly.