FIELD: machine building.
SUBSTANCE: group of inventions relates to expandable tubular anchors. Anchor includes tubular anchor bolt. Production of anchor bolt comprises steps of, first, determining length and diameter of holes in rock. Provided elongated tubular part. Provided elongated enhancing agent. Agent intensifying is inserted into tubular part. Element made of two parts, which are arranged together, one inside other, is placed in forming device. One side of element is attached to end section, while second side element is attached to end part. Longitudinal fold is formed along all element. Hole in end part for connection of anchor bolt with compressed substance is formed.
EFFECT: technical result is increased stability of anchor to acting on it forces and corrosion.
8 cl, 13 dwg
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Authors
Dates
2016-07-20—Published
2012-06-21—Filed