Precast pile driver

The utility model discloses a precast pile driver, and relates to the field of constructional engineering equipment. The device is provided with a crane for hoisting a precast pile and a pile pressing mechanism for continuously pressing the precast pile into soil, the pile pressing mechanism comprises a rack and two lifting clamping mechanisms, the rack is arranged above the ground, a space is formed below the rack, and equipment and personnel can enter the space for pile splicing. A hole is formed in the middle of the machine frame so that a crane can place a precast pile onto the ground, the two lifting clamping mechanisms are symmetrically arranged around the hole, and after the precast pile is grounded, the two lifting clamping mechanisms can alternately work to clamp the precast pile and press the precast pile into soil. Compared with the prior art, the press-in process is continuous, the construction effect can be improved, the precast pile can be clamped by one lifting clamping mechanism all the time d