GROUND ANCHOR Russian patent published in 1997 - IPC

FIELD: civil engineering. SUBSTANCE: ground anchor consists of a pull rod, hollow body, tip, rotary blades being symmetric in pairs. The blades are placed close to the external surface of the body and have diaphragms rigidly connected to them in symmetry plane. The diaphragms are passed through slots in the body and interconnected in each pair of blades and connected to the pull rod through a hinge. The cross sections of the blades are similar in shape to body cross section. The body and pull rod placed in it are assembled of sections and form assemble units together with each other and blades placed in appropriate sections of the body. As this takes place, each body section has ring thickening on lower end covering the upper end of the adjoining lower section of the body, and each pull rod section is made in the form of coupling with connections on ends for connecting to adjoined pull rod sections. Outer diameter of the thickened portion of the body is equal to the outer diameter of blade cross section. The diaphragms are sharpened on the side of blade free ends. EFFECT: more reliable fastening. 4 cl, 11 dwg