The invention discloses a multifunctional automatic
pile head for allowing a plastic drainage plate to be inserted. The multifunctional automatic
pile head comprises a pull rod, a hollow connecting piece, a hollow body of a
pile head body, the pile head body and a sealing head. The bottom end face of the pile head body is matched with the top end face of the sealing head to form a sealing structure, a drainage plate pushing mechanism is arranged in the cavity of the hollow body of the pile head body, a channel allowing the plastic drainage plate to pass through is formed in the pile head body, and a drainage plate
cutting-off mechanism is arranged between the bottom end face of the pile head body and the top end face of the sealing head. The pull rod drives the drainage plate pushing mechanism to push the plastic drainage plate under the effect of an external power source and drives the sealing head to be matched with or separated from the pile head body, and when the sealing head is matched with the pile head body, the drainage plate
cutting-off mechanism cuts off the plastic drainage plate. The multifunctional automatic pile head is simple and compact in structure, convenient to use and maintain, reliable in working, good in safety and universality, and high in
automation degree and working efficiency, and the plastic drainage plate can be automatically well led in,
cut off, clamped and led out and the pile head body can be automatically well sealed.