A vibration-proof nut

Abstract

The utility model provides a kind of anti-vibration nut, increase O-ring in nut inside, increase the friction between nut and bolt, prevent nut from loosening because of vibration.The anti-vibration nut is used for the related operation (pipeline flange connection, fixed support, bolt fastening) needing to use bolt connection, fixed, using the nut and bolt connection, can prevent nut loosening due to vibration at connecting place, avoid the security risk due to the fastening of fastener The fastening of fastener reduces, and simultaneously can reduce the use of spring pad, reduce construction cost, improve construction efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of bolt connection technology, specifically relating to a vibration-damping nut. Background Technology

[0002] Currently, when bolted connections are used to connect pipeline flanges or fix supports (frames), the flow of the medium in the pipeline can cause vibration of the pipeline flanges and fixed supports (frames), which can easily cause the nuts to loosen, resulting in pipeline flange leaks, loose fixed supports (frames), and other phenomena, creating safety hazards. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] This utility model proposes an anti-vibration nut to solve the technical problem of how to eliminate potential safety hazards in connections and ensure production safety.

[0005] (II) Technical Solution

[0006] To solve the above-mentioned technical problems, this utility model proposes an anti-vibration nut, which increases the friction between the nut and the bolt by adding an O-ring inside the nut, thus preventing the nut from loosening due to vibration.

[0007] Furthermore, a groove is machined at the center line of the internal thread of the nut, and an O-ring is embedded in the groove.

[0008] Furthermore, the groove is a semi-circular groove.

[0009] Furthermore, the width of the semi-circular groove is equal to the diameter of the O-ring.

[0010] Furthermore, the depth of the semi-circular groove is 3 / 4 of the diameter of the O-ring.

[0011] Furthermore, the O-rings are made of nitrile rubber, silicone rubber, or fluororubber.

[0012] (III) Beneficial Effects

[0013] This invention proposes an anti-vibration nut that increases friction between the nut and bolt by adding an O-ring inside, preventing the nut from loosening due to vibration. This anti-vibration nut is used in operations requiring bolted connections and fixation (pipeline flange connections, fixed supports, bolt tightening). Using this nut with bolts prevents loosening caused by vibration at the connection point, avoiding safety hazards due to reduced fastener tightness. It also reduces the need for spring washers, lowers construction costs, and improves construction efficiency. Attached Figure Description

[0014] Figure 1 This is a top view of the anti-vibration nut of this utility model;

[0015] Figure 2 This is a front sectional view of the anti-vibration nut of this utility model. Detailed Implementation

[0016] To make the objectives, contents, and advantages of this utility model clearer, the specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples.

[0017] This embodiment proposes a vibration-damping nut, the structure of which is as follows: Figure 1 and 2 As shown, an O-ring is added inside the nut to increase the friction between the nut and the bolt, preventing the nut from loosening due to vibration. Specifically, a semi-circular groove is machined at the center line of the internal thread of the nut. The width of this semi-circular groove is the diameter of the O-ring, and its depth is 3 / 4 of the O-ring's diameter. The O-ring embedding in the semi-circular groove prevents the nut from loosening due to vibration during use, ensuring the connection strength of the fastened parts, preventing loosening, and eliminating safety hazards.

[0018] Depending on the operating conditions (temperature, pressure, corrosion), O-rings are made of materials such as nitrile rubber, silicone, or fluororubber.

[0019] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A vibration-proof nut characterized by comprising: The half-circle type groove is processed at the thread center line inside the nut, the O-shaped ring is embedded in the groove, the friction between the nut and the bolt is increased, and the nut is prevented from loosening due to vibration; the width of the half-circle type groove is the wire diameter of the O-shaped ring, the depth of the half-circle type groove is 3 / 4 of the wire diameter of the O-shaped ring, and the O-shaped ring is selected from nitrile rubber, silica gel or fluorine rubber.

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