| 摘要 |
FIELD: mining industry, particularly to produce anchors adapted to fasten over-ground equipment. ^ SUBSTANCE: anchor comprises lock including wedge couple having mutually parallel inner surfaces. One wedge of the couple is formed on one end of anchor rod to be inserted in bore-hole and is provided with auxiliary rod. Inclined groove extending for anchor rod thickness is created in anchor rod. Bottom of the inclined groove is extension of wedge-like anchor rod surface. Part of side wedge may be inserted in the inclined groove. Extensions adapted to limit mutual displacement of lock members are created on mating lock member surfaces. Side wedge is provided with return spring. Anchor rod has axial orifice and groove for auxiliary rod and return spring installation. ^ EFFECT: increased load-bearing capacity of the anchor and prevention of sudden strength loss. ^ 7 dwg |
