| 摘要 |
PURPOSE:To enable pressing-in of a pile simultaneously with excavation by means of an earth auger at a site having a vertical limited space, by a method wherein a clamp and a chuck are provided, and a moving grasping member and a lag grasping stationary member are attached to the chuck. CONSTITUTION:An earth auger 11, a pressing-in pile 12, and a casing 13 are arranged, the pile and the casing are pinched from both sides by means of moving grasping members 7 of a chuck 6, and a lag 14 is secured to the casing 13 of the earth auger 11. The earth auger 11 is provided with a hydraulic motor 16 and a hydraulic cylinder plunger device 17, which drives a combination body of an auger screw 15 and the hydraulic motor 16 vertically along the earth auger casing 13. This prevents deformation of the earth auger, and enables a pile pressing-in device to be stably stepped in a crawling manner. |
