Patent ID: 9631336
Date: 2017-04-25
CPC Classifications: B23K,E02D

Claim:
1. A screw pile for reinforcing the ground, comprising: a bar-shaped body with a pile hole that is a passage of air and a grouting solution; a screw that is formed spirally and integrally around the body; one or more grouting holes formed around the body so that the grouting solution can be sprayed; a tip expanding-reinforcing plate that has a plate shape, is coupled to one end of the body on its top, and has an air discharge hole formed through the top and a bottom in the same line as the pile hole; and an excavation bit that has one end coupled to a side of the bottom of the tip expanding-reinforcing plate and the other end with a blade, wherein when the bit and the screw are configured to form a hole in the ground by rotation and the tip expanding-reinforcing plate is configured to move to the bottom of the hole to perform grounding, thereby increasing a tip support force, and wherein the tip expanding-reinforcing plate further includes a sub-screw integrally and spirally formed around the tip expanding-reinforcing plate.