Tips for using expansion bolts

The fixation of expansion screws is to use the slope of the trapezoid to make the expansion have a lot of friction, knowing that the desired fixing effect is achieved. Generally, the expansion screws we use are divided into two types: iron and plastic. The method of use is based on According to the standard of the expansion screw, make the corresponding small hole, and then drive the expansion screw in, so that the expansion screw will play a good fixing effect after the expansion screw is opened in the future. One side of the expansion screw is threaded, and the other side is tapered. (Guide: Analyze the key features of the two types of stainless steel)

The outer side of the expansion screw is covered with iron. Some expansion screws are covered with steel pipes. There are half of the cuts on the iron cylinder, and then they are completely punched into the previously made small holes on the wall. , When locked with a nut, the nut pulls the screw outwards and pulls the tapered side into the iron cylinder. When the iron cylinder is expanded, it can be tightly fixed on the wall. These expansion screws are used on protective fences, air conditioners and other bricks, concrete floors and other materials. The expansion screw is composed of a screw and an expansion tube and other parts. The bottom of the screw shows a cone shape. The diameter of the cone is much larger than the inner diameter of the expansion tube. When the nut is tightened, the screw is required. When moving outwards, the function of the American Express thread is moved to one side, so that a very large pressure can be stroked outside the expansion tube, and the respective friction forces can have a fixed effect.

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