Precautions For Installing Anchor Bolts

In the previous article, Xinchi Fastener Company introduced what is anchor bolt and the installation process of an anchor bolt. As a professional fastener supplier, Today, Xinchi Fastener Company continues to introduce the installation precautions of anchor bolts to you, hoping to be helpful.

A movable anchor bolt, also known as a long anchor bolt, is a kind of detachable anchor bolt, used to fix that heavy machinery and equipment that have strong vibration and impact when working. The anchor bolt is longer or in the form of a double-headed thread. Sometimes movable anchor bolts need to be used with each anchor. The anchor plate can be welded or cast with a hole in the middle to pass the bolt or not to rotate the bolt. The main points of laying movable anchor bolts are: grouting is not allowed in the bolt hole; Double-ended anchor bolts need to be tightened; Attention should be paid to the direction of T-shaped anchor bolts to ensure a 90° intersection Angle with the rectangular hole of the anchor plate.

The adhesive ground anchor bolt is a kind of anchor bolt applied in recent years. Its installation method and requirements are basically the same as that of an expansion anchor bolt. When bonding, the sundries in the hole of the bolt of the grounding foot should be blown clean, and should not be exposed to moisture. The bonding method shall comply with the provisions of the bonding material.

Expansion anchor bolt: the distance from the center of the expansion anchor bolt to the edge of the foundation shall not be less than 7 times the diameter of the expansion anchor bolt. During drilling, the drill should be prevented from colliding with steel bars and buried pipes in the foundation. The foundation strength for installing expansion anchor bolts shall not be less than 10MPa. There shall be no cracks in the borehole. The diameter and depth of the borehole shall match the expansion bolt.

A fixed anchor bolt, also known as a short anchor bolt, it is poured with the foundation and used to hold the equipment without strong vibration and shock. The length of the anchor bolt is generally 100~1000㎜. The head is shaped like a fork, ring, or hook to prevent the anchor bolt from rotating or pulling out. The fixed anchor bolt can be divided into primary grouting and secondary grouting during installation. One grouting is an embedded anchor bolt, and the key is accurate bolt positioning. The general positioning methods of embedded anchor bolts include template positioning and welding and fixing with steel mesh respectively.

Embedded anchor bolt: For the embedded anchor bolt of important equipment, the installation unit should be involved in advance to avoid problems. Secondary grouting is to set aside anchor bolt holes in advance on the foundation, put on anchor bolts when installing equipment, and then pour the anchor bolts in the reserved holes.

Common quality problems of anchor bolt: the center position of the anchor bolt is out of tolerance; The height difference of the anchor bolt (including high and low); Anchor bolts loose in the foundation; The anchor bolt is out of alignment with the horizontal plane.

In the process of using anchor bolts, different installations must be carried out according to different fixing methods. When installing anchor bolts, we must pay attention to the above-related matters to avoid some unnecessary trouble. Normally, anchor bolts are used in Bridges, mines, railways, highways, power enterprises, cement factories, automobiles, motorcycles, lifts, boiler steel structures, long-span steel structures, and large buildings.

Anji Xinchi Fastening Piece Co., Ltd is a trustworthy fastener company, especially in furniture nuts. And we are the designated fastener supplier to“STAPLE”. As a trusted fastener supplier,  Xinchi Fastener Company can offer a wide range of high-quality fasteners, including tee nuts, screws, bolts, rivets, washers, etc. If you want to know more about fasteners or want to wholesale fasteners, please feel free to contact us. And then our experienced and expert service team will reply to you as soon as possible.