| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide pile driving equipment which can easily and efficiently perform drilling and pile-driving operations, and which can enhance construction accuracy. Ž<P>SOLUTION: A leader 24 for supporting a plurality of types working bodies in a vertically-movable manner is split into three portions along the direction of an axis line L. An intermediate split portion 24b is supported on a boom 23, and upper and lower split portions 24a and 24c are supported on the intermediate split portion 24b in such a manner as to be turnable on the axis line L. The plurality of types of working bodies are supported between the upper and lower split portions 24a and 24c in such a manner as to be movable along the direction of the axis line L, in the state of being provided at predetermined angular spacings in the direction of a circumference centering on the axis line L. The intermediate split portion 24b is provided with rotary mechanisms 35A and 35B for selectively arranging the one working body in a use position U by rotating the upper and lower split portions 24a and 24c. The intermediate split portion 24b is provided with a guide rail 43 for guiding the movement of the working body, selectively arranged in the use position U, in the axial direction. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
|
