| 摘要 |
The invention relates to a foundation driller for anchoring of components in soil, comprising a base member with at least one cylindrical area and at least one cutting blade providing forward advancement. The object of the invention is to provide a drilled foundation with which a high degree of safety against loosening and unscrewing. According to the invention, the object is met with an apparatus in which the foundation driller comprises a base body (1) with at least one cylindrical area (1.2) and at least one cutting blade (2) that provides forward advancement, in which the base body (1) comprises at least two cylindrical areas (1.1, 1.2) with different diameters, wherein the area (1.1) nearer to the soil has a smaller diameter and the at least one cutting blade (2) providing forward advancement is attached at the area (1.1) nearer to the soil and has an even incline. |
