BACKSTAY ATTACHING CONSTRUCTION FOR PILE DRIVER

摘要

PROBLEM TO BE SOLVED: To reduce the influence of a bending moment to a leader and cope with excavating reaction in right and left direction acting to the top bracket. SOLUTION: A back stay attaching portion 42 is provided at the rear portion of the top bracket 4 at the upper portion of a leader 2, and a backstay 5 is coupled to the backstay attaching portion 42.