REUSABLE ROCK ANCHOR Russian patent published in 2024 - IPC E21D21/00 F16B2/22 

FIELD: construction.

SUBSTANCE: invention relates to a reusable anchor for rocky soils. Anchor comprises a tight closed shell-mandrel made of 2–3-layer rubberized technical fabric in the form of a toroid elongated along the axis. Shell-mandrel end is equipped with air valve. Anchor also contains a cone-shaped expanding tight shell made of 2–3-layer rubberized technical fabric, which is placed in a power jacket. Power cover is made in the form of a mesh cone from a synthetic cord, with a traction rope with a loop passed through the inner open cavity of the mandrel. Internal cavities of the shell-mandrel and the expanding shell are connected by an elastic air duct. Diameter of the base of the cone of the expanding shell in the gas-filled state is larger than the diameter of the inner free cavity of the toroid of the shell-mandrel filled with gas, but less than the outer diameter of the anchor.

EFFECT: reduced material consumption of the anchor, as well as creation of a reusable anchor.

1 cl, 2 dwg