| 摘要 |
PROBLEM TO BE SOLVED: To enable automatic installation without requiring various tools to rotate an anchor rod.SOLUTION: An anchor includes an anchor rod 3 to be rotated during installation of the anchor and an anchor nut 1. A screw of the anchor nut 1 fits in a screw of the anchor rod 3 only over part of a screw hole. Thus the anchor nut 1 can only be screwed some way further onto the anchor rod 3, and up to a predetermined torque can be used for rotating the anchor rod 3 during placement of the anchor. As soon as the anchor rod 3 is firmly seated in the drill hole, as a result of the action of adhesive, mortar or expansion or spreading, the anchor rod 3 forms a through-thread in the screw thread hole when the anchor nut 1 is rotated relative to the anchor rod 3, and consequently the anchor nut 1 can finally be screwed onto the anchor rod 3 until it affixes the anchor plate 4 in its final position to the ground 7. |
