The use of the rear expansion mechanical anchor, the following heavy expansion anchor manufacturers Xiaobian for everyone to introduce:

The rear-expanded anchor bolt, also known as the bottom-expanding anchor bolt and the rear-cut anchor bolt, is a very mature product in the construction anchor bolt, and its bearing capacity and seismic performance are superior. The curtain wall specification clearly stipulates that the pre-buried board needs to be fixed by two expansion anchor bolts and two chemical anchor bolts.

The construction of the rear-expanded anchor bolt is complicated. After drilling, the hole must be reamed to exert the overall performance of the anchor bolt. Because of the need to ream the hole, the probability of the worker hitting the steel bar when reaming is relatively large. Once the reaming hole is encountered, it will not be expanded, especially the large-size anchor bolt. Therefore, the models with M20 and above are basically few. use.

Rear expansion anchor and special expansion drill

Compared with self-expanding anchor bolts, the rear-expanded anchor bolts installed in place have higher safety performance. The construction steps are as follows:

(1) drilling a hole of corresponding diameter and depth using a straight hole drill;

(2) using a special expanding drill bit to shake at the bottom to expand the bottom into a wedge-shaped hole;

(3) Use a soot blower to align the hole to blow dust until there is no dust in the hole;

(4) Using a hoe or a hammer to cooperate with the tapping sleeve to tap down and then expand the bottom anchor to make the bottom expand to complete the anchoring. Schematic diagram of the installation of the rear expansion anchor. Taibao Warehouse Precision Technology Co., Ltd. is located in No. 188, Luxin Road, Taicang City. It is a professional heavy-duty bracket manufacturer.