| 摘要 |
PROBLEM TO BE SOLVED: To provide a pile driving guide tube capable of surely and efficiently transmitting the striking force of a striking hammer to a pile and preventing damage to a guide tube body, thus eliminating the need for frequent repair work and permitting a safe operation causing little noise. SOLUTION: A hammer driving hole 1a provided in the top of the guide tube body and a pile head guide hole 1b provided in the bottom of the guide tube body are formed to vertically pass through the guide tube body and a locking recess 1c having a greater inside diameter than the hammer driving hole 1a and the pile head guide hole 1b is formed approximately intermediate between the holes. A beating plate 1d for transmitting the striking force from the striking hammer 3 is movably mounted in the locking recess 1c.
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