Fixing principle of expansion screw (explosive screw): When the nut is tightened, the screw moves outward, and the conical part moves through the axial movement of the thread, so that a great positive pressure is formed on the outer peripheral surface of the expansion pipe, and the angle of the conical part is small, so that friction self-locking is formed among the wall, the expansion pipe and the conical part, thus achieving the fixing effect.
Expansion screws (explosive screws) are widely used in various decoration occasions because of their small drilling, large pulling force and flat exposure after use. If it is not used, it can be removed at will to keep the wall flat.
Extended data:
Characteristics of expansion screw (explosive screw);
Wide applicability, simple construction method, high construction success rate, high tensile design, high strength expansion, locking effect, no trouble in disposal, recycling and high-end design concept.
Advantages of expansion screw (explosive screw):
1, with wide applicability. As long as the thread size of the male thread part is consistent, it is suitable for any type of anchor head. ?
2. Selection of construction methods. Fixed-point preset can be used as required, and drilling (loading) can be completed in one construction, and its function and effect are completely consistent.
3. The construction success rate is high. There is no trouble of hole attachment depth and borehole inclination, and the construction achievement rate is 100%. ?
4, high tension design, full tooth taper expansion special hook design.
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