An anchor screw is characterized in that an adjusting sleeve is provided between the foundation screw portion higher than the foundation and the bottom hole of the device. An upper end is provided with an adjusting cap, and the buried portion of the foundation screw is covered with an anchor sleeve. It consists of upper and lower support blocks, casings, and tendons. The lower end of the adjusting sleeve and the root of the foundation screw are respectively connected with the upper and lower supporting blocks. The utility model eliminates the oblique iron when adjusting the level of the equipment, and the adjustment is quick and convenient, improves the stress state of the anchor screws, and the replacement of the anchor screws is more convenient, especially suitable for the installation and use of large equipment.
The inner diameter of the hole on the surface of the slot steel plate is only 1mm larger than the outer diameter of the design anchor screw, and its center is consistent with the design. When the anchor screw is placed in it, the maximum displacement deviation of each bolt can be 0.5mm, any two The maximum displacement deviation that bolts can produce is 1mm, so that it can ensure that the center displacement between any bolts in the same bolt group reaches the construction pre-control target ≤1mm. Because the precision control of the special fixture itself is better, as long as the independent bracket for the special fixture is accurate through the total station, the accuracy of the anchor screws inserted in the fixture can be controlled within the design range.
Anchor screws are widely used in the large construction industry, and were then introduced and manufactured by our country. If the bolt diameter is very large (such as 45mm) and the buried depth is too deep, you can weld a square plate at the end of the bolt, that is, make a large head (but there are certain requirements). The burial depth and the hook are to ensure the friction between the bolt and the foundation, so that the bolt will not be pulled out and damaged.