Upper locking type elastic conical locknut

A technology of elastic cones and anti-loosening nuts, which is applied in the direction of nuts, screws, bolts, etc., can solve the problems such as the large impact on the service life of bolts, and achieve the effect of preventing loosening and retreating, reducing adverse effects, and improving the yield.

Inactive Publication Date: 2020-12-25
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the method adopted in the above patent can prevent the nut from loosening, the bolt receives radial shear force at this time, which has a great impact on the service life of the bolt

Method used

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  • Upper locking type elastic conical locknut
  • Upper locking type elastic conical locknut
  • Upper locking type elastic conical locknut

Examples

Experimental program
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Effect test

Embodiment Construction

[0024] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0025] like figure 1 , figure 2 and image 3 As shown, first screw the thick nut with the inner conical hole on the bolt, the direction of the inner conical hole is facing outward, use a wrench to tighten it to the force value required for installation, and then screw the thin nut with the outer conical boss onto the bolt Above, the outer conical boss is facing the inner conical hole. Use a wrench to screw the outer conical boss of the thin nut into the inner conical hole of the thick nut. Since the outer conical boss is provided with a deformation groove, it will , each part of the outer conical boss deforms at the same time until the arc-shaped section protrusion screwed on the outer conical boss snaps into the arc-shaped section groove on the wall of the inner conical hole, at this time the thick nut and the thin nut are connected as o...

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Abstract

The invention relates to a locknut, in particular to an upper locking type elastic conical locknut. The upper locking type elastic conical locknut is composed of a thick nut with an inner conical boreand a thin nut with an outer conical boss, an arc-shaped cross-section groove is formed around the hole wall 1-2 mm below the top of the inner conical bore of the thick nut, and an arc-shaped cross-section bulge is arranged around the conical surface 1-2 mm above the bottom of the outer conical boss of the thin nut. By screwing the thin nut with the outer conical boss, the outer conical boss extrudes the hole wall of the inner conical bore in the screwing process to deform until the arc-shaped cross-section bulge on the outer conical boss enters the arc-shaped cross-section groove in the holewall of the inner conical bore, so that a bolt thread and a nut thread are further locked in the axial direction to form locking, and a good anti-loosening effect is achieved under the continuous vibration working condition.

Description

technical field [0001] The invention relates to an anti-loosening nut, in particular to an upper locking type elastic conical anti-loosening nut, which further wedges the threads on the bolt axially and prevents the fastener from loosening under vibration. Background technique [0002] Using bolts and nuts to fasten spare parts is the most commonly used fastening method in various mechanical equipment and daily production and life. Traditional bolts and nuts play a fastening role by thread occlusion. The fasteners of mechanical equipment are subject to vibration during service Affected by other factors, there will be looseness, which will adversely affect the normal operation of the equipment, and even cause safety accidents in severe cases. How to prevent mechanical equipment fasteners from loosening and improve the reliability of mechanical equipment operation is an urgent problem to be solved. [0003] When bolts and nuts are used for fastening, after tightening, there i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16B39/28F16B37/00
CPCF16B37/00F16B39/28
Inventor 吴卫国杭锐姜世平于国军
Owner JIANGSU UNIV
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