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The difference between mechanical anchor bolts and expansion screws

Posted by Admin | 30 Jun
The post-cutting anchor is also called self-cutting mechanical anchor. The post-expanding mechanical anchor requires secondary reaming to adjust the equipment.
The working principle of the back-cut mechanical anchor bolt is based on the mechanical locking key of the anchor bolt and the anchoring force generated by the concrete, mainly according to the size of the torque force. After reaching a certain torque, the mechanical lock key of the anchor bolt will automatically open and cut into the concrete.
The post-expanded mechanical anchor bolts are more troublesome to be cut after the construction. When the first reaming is completed, it is necessary to use professional reaming equipment to ream the bottom of the hole (note that the bottom of the hole after the secondary reaming is a cone shape) and then put the rear expansion anchor bolt, tap it to the bottom with an awl, open the anchor bolt lock key, and then apply torque with a torque wrench, and the lock key is completely opened.
The expansion screw is just an ordinary anchor bolt. It is mainly used to fix the temporary equipment and method by the expansion force generated by the conflict between the expansion piece of the expansion screw and the hole wall.
shellyn-anchor.com
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