JOINT STRUCTURE OF UPPER AND LOWER PILES IN ROTARY PRESS-FITTING PILE

摘要

PROBLEM TO BE SOLVED: To provide a joint structure of upper and lower piles in a rotary press-fitting pile capable of easily joining the upper and lower piles to each other and securely transmitting the rotating torque of the upper pile to the lower pile when the pile driven into the ground is reversely rotated.;SOLUTION: A male part 6 having hexagonal outer peripheral shape is formed onto an upper joint 4 fitted to the lower end part of the upper pile 2, and a female part 5 having hexagonal inner peripheral shape is formed in a lower joint 3 fitted to the upper end part of the lower pile 1. When the male part 6 is fitted to the female part 5, the upper and lower piles 1 and 2 are integrally rotated by the engagement action of the hexagonal shapes in both normal and reverse rotating directions.;COPYRIGHT: (C)2005,JPO&NCIPI