Anchor bolts are pre embedded components specifically designed to be embedded in concrete foundations to secure the bases of various machines and equipment.
1, Classification and Appearance
Anchor bolts are mainly divided into four categories: fixed anchor bolts, movable anchor bolts, expansion anchor anchor bolts, and bonded anchor bolts. According to different appearances, it can also be divided into L-shaped embedded bolts, 9-shaped embedded bolts, U-shaped embedded bolts, welded embedded bolts, etc.
1. Fixed anchor bolts: poured together with the foundation, used to fix equipment without strong vibration and impact.
2. Active anchor bolts: detachable, used to fix heavy machinery equipment with strong vibrations and impacts.
3. Expansion anchor anchor bolt: It is used to expand and anchor in concrete by rotating or tapping, and is suitable for fixing simple or auxiliary equipment that is stationary.
4. Adhesive anchor bolts: The use of adhesive to fix bolts to concrete foundations has been widely used in recent years.
2, Material and Strength
The main material for anchor bolts is steel, commonly used being carbon structural steel such as Q235, Q345, and alloy steel. These steels have good plasticity and toughness, and can maintain good deformation ability during stress, ensuring that bolts are not easily broken or deformed. The tensile strength of anchor bolts mainly depends on their cross-sectional area and allowable stress value, and anchor bolts of different materials have different tensile strength grades.
3, Installation method
The installation methods of anchor bolts mainly include one-time embedding method and reserved hole method.
1. One time embedding method: When pouring concrete, embed the anchor bolts into it. This method is suitable for equipment with high vibration, such as tall towers.
2. Reserved hole method: First, reserve holes. After the equipment is in place, place the anchor bolts into the holes and then pour concrete. This method is suitable for stationary equipment and equipment with low vibration.
4, Precautions for use
When selecting anchor bolts, the appropriate type and specification should be chosen based on the weight, stress conditions, and operating environment of the equipment.
During the installation process, it should be ensured that the position of the anchor bolts is accurate and firmly fixed. For anchor bolts that require pre tightening, they should be tightened according to the specified pre tightening force.
During use, the looseness of the anchor bolts should be regularly checked and tightened in a timely manner. For anchor bolts that are exposed to harsh environments for a long time, necessary anti-corrosion measures should be taken to extend their service life.
5, Application scenarios
Anchor bolts are widely used in various fields such as equipment fixation, steel structure foundation embedded parts, street lamps, traffic signs, pump and boiler installation, and heavy equipment embedded fixation. They are one of the key components that ensure the safe and stable operation of equipment and structures.
As an important fastener, anchor bolts play a crucial role in fixing machines and equipment.
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