Anchors for fastening of marginal SOLID DEVELOPMENT

摘要

The utility model relates to mining, namely the lining of mine workings, and can be used in the construction of roof bolting. The anchor comprises a load-bearing rod 1 2 with a relief surface formed by a screw with double right discontinuities along the length. On the head portion of the screw rod 4 is mounted to the screw, coincides in all respects and with the direction of the screw rod of the relief surface. The shank rod has the same relief profile surfaces and mounted directly on it bearing washer 5 and nut 6. When setting the anchor occurs a violent rupture due ampoules and predetermined diameter of the screw is formed an annular gap with the bore wall (2 mm), which provides an effective fixing of the anchor. Performing all parameters congruent helical surfaces helps reduce the complexity of manufacturing the anchor. 1 Fig.