Screw pile anchor

Screw pile anchor:

Prior art using screw pile ground anchors, e.g., by A.B.C. hance Co., Missouri, USA. Models manufactured to support a wide range of loads are well known. Screw Pile anchors usually have a shaft with a base plate at the top of the shaft (a fixed plate on which a lamp post or supported load is bolted or welded), and spiral flanges at or near the embedded end. Typically, a digging tip is provided on the ground embedding end, which digs holes in the ground for the shaft when the screw pile anchor is driven into the ground by rotation. Such earth anchors have only low lateral stability and are not suitable for supporting lampposts or similar objects, especially in loose sandy soils. The possible installation speed of the pile anchor supporting the lamp post is unsatisfactory, and conventional bracing must be used, which has a two-week installation period (during the installation of the concrete pile).  A pair of tubes is fixed to the shaft by a sleeve ring and is operated to drive into the ground on a spiral flange, with one tube installed inside the other tube. However, the increased lateral stability due to vertical compression into the ground is only of minor importance. A purpose of the invention is to provide a device for increasing the lateral stability of a pile anchor. The present invention preferably aims to provide such a device immediately adjacent to a substrate. Another preferred purpose of the invention is to provide a device in which the degree of increased stability can be selected according to the ground in which the anchor is embedded. Another preferred purpose of the invention is to provide a simple and efficient means of connecting the respective parts of the shaft. Other preferred purposes of the invention will become apparent from the following description. On the one hand, the invention relates to a stabilizing group for ground anchors with screw piles.