First, the difference between ordinary chemical anchors and special inverted cone chemical anchors Ordinary chemical anchors and special inverted cone chemical anchors are a kind of high-strength chemical anchors, but they have some differences in appearance, adhesives used, stress methods, bearing capacity and price. The first is the appearance, the appearance of the special inverted cone chemical anchor bolt and the ordinary chemical anchor bolt are very different, the former is inverted cone, the latter is ordinary cylindrical with threads. Secondly, the adhesive used is different. The adhesive used for the special inverted cone chemical anchor is an injectable planting adhesive, while the ordinary chemical anchor is installed using a chemical agent. The force mode is also different, the special inverted conical chemical anchor is fixed by injection type planting glue, and the corresponding adhesive layer is formed between the hole wall and the anchor, and the chemical anchor is fixed by using chemical agents to bond the chemical anchor and the hole wall. There are also differences in bearing capacity. In general, the bearing capacity of special inverted cone chemical anchors is greater, and the force is about 5%-10% higher than that of ordinary chemical anchors. Finally, in terms of price, the price of the special inverted cone chemical anchor plus the injected planting glue will be higher than that of the ordinary chemical anchor, but in long-term use, the cost of the special inverted cone chemical anchor will be much lower.
The installation process of the special inverted conical chemical anchor bolt generally includes the following steps: The first step is to measure the length of the lower end face of the anchor bolt to the installation limit line and mark the depth of the drilling hole. The second step, according to the installation parameter table "effective burial depth" and "hole diameter", use a hammer drill to drill, the aperture, hole depth and perpendicularity to meet the requirements of the specification. The third step, use the air pump to clean the hole, use the hard brush to clean the hole, and then use the air pump to clean the hole, the dust in the hole must be cleaned. The fourth step, install the planting glue on the glue gun, connect the glue nozzle, check that the glue nozzle must have a spiral tube or discard. In the fifth step, the glue of the first three guns should be discarded, the glue nozzle should be inserted into the bottom of the hole, and the glue should be extruded at a constant speed. The normal glue injection amount is 2/3 of the volume of the hole. Step 6: Rotate the inverted cone chemical anchor clockwise into the hole to clean and scrape off excess glue. The seventh step, after the installation is complete, requires static curing. The general construction period is 24 hours and cannot be carried in advance. In short, the installation of the special inverted cone chemical anchor is more difficult and complicated than that of the ordinary chemical anchor, but as long as the operation is carried out in accordance with the normal process, it can effectively avoid problems and ensure safety and reliability.
