| 摘要 |
PURPOSE:To perform in parallel the excavation of soil as well as the delivery and discharge of the excavated soil by providing excavating blades and a soil- guiding spiral blade to a normally and reversely turnable screw to be used in comparatively narrow places. CONSTITUTION:An excavating blade 7 is provided at end one of the rotary shaft 9 of an excavator, and a normally and reversely turnable driving motor 8 is the connected to the other end of the rotary shaft 9. A large-diameter spiral blade 10 is attached to the right back side of the excavating blade 7, and a notched spiral blade 11 of a smaller diameter than the blade 10 is provided at the rear part of the blade 10. The screw 6 is insered in the relation to an excavating bucket 1 housed with the large-diameter spiral blade 10 and also a bottomed cylindrical mantle 2, and the excavating blade 7 is positioned in front of the excavating bucket 1. Thus, excavated soil is housed in the cylinder 2, delivered as such, and then discharged by reversely turning the screw 6. |
