The utility model relates to the field of locknuts, in particular to a
locknut. The
locknut comprises a nut body, a trapezoidal block and an ejection mechanism, a
gasket is fixedly connected to one side of the nut body, a containing groove is formed in the end, away from the
gasket, of the nut body, a nylon ring is fixedly connected into the containing groove, the trapezoidal block is slidably connected into the nut body, and the inclined face of the trapezoidal block is located in the nut body. The trapezoidal block is fixedly connected with a rubber pad far away from the slope. The ejector rod is rotated, the inclined face of the trapezoidal block is extruded through the
spherical design at the bottom end of the ejector rod, the rubber pad is pushed to be tightly attached to the bolt, part of vibration energy can be absorbed through the elastic characteristic of the rubber pad, and relative movement between the bolt and the nut is reduced; and the anti-skid patterns on the
gasket serve as a third anti-skid mechanism, and through the combined action of the three anti-skid mechanisms, the
locknut has higher fastening stability and safety under the complex working condition.