Rectangular, semicircular and trapezoidal round skirt check bolt and nut for flange

Abstract

The invention discloses a rectangular, a semicircular and a trapezoidal round skirt check bolt and a nut for flange, and belongs to the technical field of lock fasteners. Flange face of a lock bolt and nut should be large enough, an annular platform is arranged on the outermost ring of the flange face, flange rectangles, semicircular arcs and trapezoidal round skirts are arranged on the periphery of the edge of the annular platform and enable the flange face to be suspended, and the flange rectangles, the semicircular arcs and the trapezoidal round skirts make contact with a workpiece firstly during installation, are stressed firstly and transmit force to the flange face; as the outermost edge of the flange is stressed, the deformation of the flange is large. By means of the design, the elastic coefficient is small, the elastic variation is large, and the elastic potential energy stored by the flange is large, and the anti-vibration and anti-loosening capabilities are high.

Description

technical field [0001] The invention relates to a flange rectangular, semicircular arc, trapezoidal circular skirt locknut and bolt. The bottom surface of the flange is suspended by using the rectangular, semi-circular, and trapezoidal skirts of the flange, and the rectangular, semi-circular, and trapezoidal skirts on the flange edge are forced to cause local deformation of the flange, thereby storing elastic potential energy to prevent nuts and bolts from A loosening device belongs to the technical field of anti-loosening fasteners. Background technique [0002] Preventing thread loosening has always been the goal pursued by engineers and technicians. Since the appearance of thread, the problem of loosening has not been solved well. Locknuts have appeared in recent decades, and there are many forms. Everyone has different research directions and different research results. Among them, the representative work should be the tooth-changing locknut launched by the Spielock To...

AI Technical Summary

Problems solved by technology

The disadvantage is that the anti-loosening slope is very short, and the consistency between the major diameter and the major diameter of the bolt is very high.

Several types of anti-loosening nuts introduced in the national standard manual also have their own advantages and disadvantages. In 2005, the Ministry of Railways determined that the embedded steel nuts were not anti-loosening, and all 6 suppliers were deleted; the embedded nylon nuts were proved not to be anti-loosening during use. ability

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