Double-head screw rod anti-loosening and anti-falling device

Abstract

The invention discloses a double-head screw rod anti-loosening and anti-falling device. The double-head screw rod anti-loosening and anti-falling device comprises a technological nut, a screw rod pressing die and a technological nut pressing die, wherein the specification of the technological nut is the same as that of a body nut matched with a double-head screw rod and the technological nut is assembled at the outer side of the body nut; the screw rod pressing die comprises a first screw rod concave die and a first screw rod convex die; the first screw rod concave die is provided with a through groove with the width which is the same as the screw rod outer diameter of the double-head screw rod; a sharp-head-shaped circular-arc bulge is arranged in the middle of the bottom of the groove; asharp-head-shaped circular-arc bulge is arranged at the top of the first screw rod convex die and a thread of the screw rod is extruded in the radial direction under a die closing state of the firstscrew rod convex die and the first screw rod concave die; the technological nut pressing die comprises a nut concave die and a nut convex die; the nut concave die is provided with a groove; the groovebottom of the groove abuts against an outer wall surface at one side of the technological nut; a plane-shaped bulge is arranged at the top of the nut convex die and the technological nut can be extruded in the radial direction under the die closing state of the nut convex die and the nut concave die. According to the double-head screw rod anti-loosening and anti-falling device disclosed by the invention, the risk that the nut falls off from the screw rod is reduced and the operation reliability of a motor is improved.

Description

technical field [0001] The invention relates to the field of screw technology, more specifically, to a double-ended screw anti-loosening and anti-loosening device. Background technique [0002] In the prior art, the stator of the motor adopts an integral cast frame structure, and the stator core is laminated into a whole and then thermally inserted into the frame. In the production process of the stator core, it is necessary to press the specified pressure on the hydraulic press, and then tighten the screw to the specified torque to ensure that the quality factors such as the pressure between the cores and the groove shape of the core meet the design requirements. [0003] Due to the structural and performance requirements, the anti-loosening treatment of the double-ended screw is very important. However, the existing anti-loosening and anti-loosening technology and devices have many deficiencies: 1. The material of the double-ended screw has high hardness and strength, but...

AI Technical Summary

Problems solved by technology

[0006] In view of this, the purpose of the present invention is to provide a double-ended screw anti-loosening and anti-loosening device. The structural design of the double-ended screw anti-loosening and anti-loosening device can effectively solve the inconvenience of the stator core double-ended screw anti-loosening treatment, and prevent loosening. The problem of poor performance

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