Disclosed herein is an anchor bolt assembly, which fixes a bolt by securing a wedge to an anchor bolt hole in a non-striking manner.
The anchor bolt assembly includes a bolt, a wedge, a hollow pipe, and a fastening nut.
The anchor socket comprises a coil spring for fixing and fastening the anchor bolt.
The cap includes a cavity configured to releasably secure the anchor bolt, and a top against which the anchor bolt rests upon insertion.
A method for pre-attaching-fixing an anchor bolt, and a method and a device for excavating an anchor bolt burying hole.
An anchor has an anchor rod (3) which must be rotated during the setting of the anchor, an anchor plate (4), and an anchor nut (1).
Tubeformed rock bolt with closed cross section.
The invention also concerns a rock bolt.
Wherein rotation of the bolt coupling portion (130) rotates the rock bolt.
An anchoring means for anchoring a rock bolt made of concrete steel in a drill hole.
Provided is a novel rock bolt anchoring system and a method of use thereof.
The invention relates to a rock anchor.
The invention provides a warning device for use in conjunction with a rock anchor.
The present invention also includes a method of making such a rock bolt and a method of using such a rock bolt.
In order to protect the coating that protects a bolt (2) against corrosion when the bolt (2) is inserted into a pre-bored hole, a protective device (1) is placed on the leading end of the bolt (2) to be introduced first into the bore.
A rock bolt (1) and a method of forming a rock bolt.
The invention concerns also the manufacture of a rock bolt.
To this end, the tie bolt (3) has a housing (7) consisting of an elastic plastic material in the region of the anchoring section (5), and is anchored by means of a hardenable mass (8).