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A Collet Structure Locknut

An anti-loosening nut, structural technology, applied in the direction of nuts, screws, bolts, etc., can solve the problems of large dynamic load, high cost, large vibration, etc., and achieve the effect of low manufacturing cost, simple structure, and large dynamic load.

Active Publication Date: 2022-02-08
YANGZHOU POLYTECHNIC INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the current self-locking bolts with complex structure, high cost, inconvenient maintenance, single function of self-locking bolts in the existing structure, limited application occasions, etc., to propose a anti-loosening bolt with a sawtooth structure, which is simple in structure, Low manufacturing cost, can meet the requirements of high speed, large dynamic load, large vibration, large temperature difference, and lubricated working conditions

Method used

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  • A Collet Structure Locknut
  • A Collet Structure Locknut
  • A Collet Structure Locknut

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0030] like Figure 8 As shown, a collet-type locknut is composed of a frustum 4-6 and a regular hexagonal prism 4-7 to form an integrated structure, and the center of the frustum 4-6 and the regular hexagonal prism 4-7 is provided with a light hole 4-4 , the center of the light hole forms an eccentricity with the center of the regular hexagonal prism, and the eccentricity is e. The eccentricity e makes the collet cone nut and the inner cone nut respectively form a cylindrical pair and a threaded pair for the bolt, and produce mutual The restrictive effect of the eccentricity e is adjusted by the use of the bolt, pitch characteristics, material, heat treatment, and surface treatment; the outer root of the cone 4-6 is provided with a circle of radial annular groove 4-3, and the cone 4- The cone wall of 6 is provided with 6 through grooves 4-1, and the groove bottom of each through groove 4-1 is provided with a round through hole 4-2 penetrating through the cone wall, and the ro...

Embodiment approach 2

[0032] like Figure 9As shown, a collet structure locknut, the collet cone nut 4 is composed of a frustum 4-6 and a regular hexagonal prism 4-7 to form an integrated structure, and the center of the frustum 4-6 and the regular hexagonal prism 4-7 is set There are threaded holes 4-4, the center of the threaded hole forms an eccentricity with the center of the regular hexagonal prism, and the eccentricity is e. The eccentricity e makes the collet cone nut and the inner cone nut respectively aligned with the bolt to form two nut pairs. , produce a mutual restriction effect, the size of the eccentricity e is adjusted by the use of the bolt, pitch characteristics, material, heat treatment, surface treatment; the outer root of the cone frustum 4-6 is provided with a circle of radial annular groove 4-3, the cone The cone wall of platform 4-6 is provided with 6 through grooves 4-1, and the groove bottom of each through groove 4-1 is provided with the circular through hole 4-2 that run...

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Abstract

A collet structure anti-loosening nut belongs to the technical field of threaded fasteners. There are threaded holes and inner taper holes inside the inner cone nut, and the collet cone gear nut is installed to screw with the bolt or stud, so that the tooth groove at the bottom of the collet cone nut contacts the two surfaces of the workpiece , the inner cone nut is screwed onto the bolt, when the inner cone hole and the cone truss are screwed together, a radial force and an axial force are generated on the cone surface, and the radial force forces the collet cone nut to shrink toward the center of the bolt. Further tighten the surface of the bolt to form anti-loosening, the axial force pushes the collet cone nut to move to the second workpiece, the bottom surface of the collet conical nut contacts the second workpiece and generates axial pressure, the tooth groove overcomes the reverse torque to further form anti-loosening, Its structure is simple, the manufacturing cost is low, and it meets the working requirements of high speed, large dynamic load, large vibration, large temperature difference, and lubrication.

Description

technical field [0001] The invention belongs to the technical field of threaded fasteners, and relates to an anti-loosening nut, in particular to a collet structure anti-loosening nut that can be used under the conditions of high speed, large dynamic load, large vibration, large temperature difference, and lubrication. nuts. Background technique [0002] Due to the advantages of large connection force, compact structure, and easy disassembly, threaded connections are widely used in various mechanical structures and are one of the most commonly used fastening methods. The threaded connection enables the reliable transmission of force (or movement) between the connected structures. When the connected part is a pressure vessel or a pipeline, the threaded connection structure also needs to ensure that the assembly has good sealing. [0003] The working principle of the locknut is to use the friction force between the nut and the bolt to lock itself. At present, one is to screw...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16B39/12F16B37/00
CPCF16B39/12F16B37/00
Inventor 王若尧柳青松赵东宏王家珂王新朱萍庄蕾张振宇
Owner YANGZHOU POLYTECHNIC INST