Using the simple understanding and simple words of wedge anchor manufacturers, wedge anchor is an item that does not have much requirements for the depth and cleanliness of concrete cavities. It is not only easy to install, but also very cheap.
The end of the tube inserted into the hole of the tube plate by the vehicle repair gecko is rolled and the inner wall of the tube is continuously expanded, resulting in plastic deformation, the diameter of the tube increases, the tube head is completely attached to the hole wall of the tube plate, and the tube plate is forced to produce elastic deformation . When the tube expander is removed, the elastic deformation of the tube sheet will return to its original state, and the plastic deformation of the tube end will not recover. As a result, the tube sheet will hold the tube end tightly, so as to achieve the purpose of leak-proof and firm connection between the two .
In addition, wedge anchors also need to choose a suitable embedding depth according to the thickness of the solid roof. With the increase of embedding depth, the pulling force will increase according to the increase of embedding depth. The wedge anchor also has an expansion effect after being reliable. Moreover, in order to ensure the quality of the expanded tube, tools, measuring tools, and operators must be determined before the expanded tube. During the inspection, the protective paint on the wall of the pipe hole should be cleaned first, and the processing quality of the wall of the pipe hole should be checked. There should be no blisters, dents, edge burrs and longitudinal nicks; It shall not be greater than 1mm, and the distance from the notch to the edge of the hole shall not be less than 1/3 of the thickness of the hole wall, and shall not be less than 4mm.
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