SCREW-IN ANCHOR Russian patent published in 2015 - IPC E02D5/56 

FIELD: construction.

SUBSTANCE: invention relates to the construction, in particular for fixing to the ground of various constructions, and can be used in the oil industry for fixing the pipelines under conditions of the Far North. Screw-in anchor comprises cylindrical rod with holes and fitting for supplying the cement slurry, tip with screw blade. Holes for the solution passage into the soil are also made in the tip. The tip blade is made incremental from bottom to top. Removable sleeve, representing a hollow tube that prevents the soil penetration into the cavity of anchor during its screwing, and as a result, clogging of openings for the withdrawal of cement slurry, is installed inside the rod.

EFFECT: increasing the carrying capacity of screw-in anchor, facilitating the anchor entry into the soil and preventing plugging of holes for the withdrawal of cement slurry into the soil.

3 dwg