Anti-loosening street lamp pole locking nut assembly

By setting a horizontal hole with a hollow quartz ball and threaded locking adhesive in the locking nut, and using an M5 socket head cap screw, the problem of the street light pole flange nut loosening due to vibration is solved, achieving stable connection and safe disassembly.

CN224174400UActive Publication Date: 2026-04-28SHANGHAI LIAOYANG STEEL POLE MFG CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANGHAI LIAOYANG STEEL POLE MFG CO LTD
Filing Date
2025-06-09
Publication Date
2026-04-28

AI Technical Summary

Technical Problem

The existing double nuts on the street light pole flange are prone to loosening under long-term vibration, resulting in unstable connection. Existing anti-loosening devices are complex and have poor fixing effect.

Method used

A horizontal hole is provided on the locking nut, a hollow quartz ball is placed inside and filled with thread-locking adhesive, and an M5 socket head cap screw is used. The adhesive is released by breaking the quartz ball to achieve double fixation and prevent loosening.

Benefits of technology

It effectively prevents the locking nut from loosening due to external vibration. Disassembly requires a crusher, improving safety and stability and avoiding safety hazards.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model belongs to the technical field of street lamp fasteners, and particularly relates to an anti-loosening street lamp pole locking nut assembly. Comprising a locking nut, and an M5 transverse hole penetrating to an inner threaded hole of the locking nut is formed in any side face of the locking nut. The anti-loosening mechanism comprises a hollow quartz ball, thread locking glue and an M5 inner hexagonal fastening screw which are arranged in the M5 transverse hole, the thread locking glue is pre-packaged in the hollow quartz ball, the outer diameter of the thread locking glue is in clearance fit with the M5 transverse hole, and the M5 inner hexagonal fastening screw has screwing-in pressure for breaking the quartz ball. Compared with the prior art, the utility model has the advantages that the locking nut is provided with the transverse hole, the hollow quartz ball is filled with the thread locking glue, and the M5 inner hexagonal fastening screw is matched, so that the nut is prevented from loosening due to external reasons after being locked, double fixation is realized, the nut can only be disassembled through a nut crusher, and the disassembly is convenient. And potential safety hazards are avoided to a certain extent.
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Description

Technical Field

[0001] This utility model belongs to the field of street light fastener technology, specifically relating to an anti-loosening street light pole locking nut assembly. Background Technology

[0002] In road lighting, streetlight poles are typically connected to their foundations using flanges and bolts / nuts for mechanical fastening. A common anti-loosening design is the double-nut locking structure (where two nuts are interlocked), which works by increasing friction and preload to counteract external vibrations. However, in practical applications, especially on busy roads or roads with frequent heavy vehicle traffic, long-term ground vibrations are transmitted through the foundation to the streetlight pole connection. This continuous low-frequency or high-frequency vibration causes the preload between the two nuts to gradually decrease, exacerbating microscopic slippage between the threaded pairs, ultimately leading to the "natural loosening" of the nuts.

[0003] The Chinese utility model patent application number 202322256479.2, entitled "Anti-loosening device kit for fasteners on light poles," includes a flange and bolts. This patented anti-loosening device kit for fasteners on light poles can ensure that the clamping force of the fasteners is maintained even when there is vibration in the usage environment. It uses the tension between two washers to achieve the dual effect of anti-loosening and tightening, thereby increasing the external load that the fasteners can withstand and being able to withstand greater vibration, and reducing the probability of fasteners loosening. However, the patented technical solution is complex and the fixing effect is not good. Summary of the Invention

[0004] The purpose of this invention is to solve the problem in the prior art that the double nuts on the flange of a street light pole will loosen after being tightened due to long-term ground vibration.

[0005] To achieve the above objectives, this utility model provides an anti-loosening street light pole locking nut assembly, including a locking nut, wherein the locking nut has an M5 transverse hole that extends through to the internal threaded hole of the locking nut on either side;

[0006] The anti-loosening mechanism includes a hollow quartz ball disposed in the M5 transverse hole, threaded locking adhesive, and an M5 internal hexagon set screw. The hollow quartz ball is pre-encapsulated with threaded locking adhesive, and its outer diameter is clearance-fitted with the M5 transverse hole. The M5 internal hexagon set screw has the screwing pressure to break the quartz ball.

[0007] Preferably, the hollow quartz sphere has a wall thickness of 0.2-0.5 mm, a crushed particle size of less than 100 mesh, and its internal filling volume is 60-80% of thread-locking adhesive.

[0008] Preferably, the M5 socket head cap screw has a tapered break head at the end of its thread, and the thread length is 1-2 mm shorter than the depth of the through hole.

[0009] Compared with the prior art, the advantages of this utility model are as follows:

[0010] This invention achieves double fixation by setting a horizontal hole on the locking nut, filling the hollow quartz ball with threaded locking glue, and using an M5 socket head cap screw. This prevents the nut from loosening due to external factors after it is locked, which would otherwise require disassembly using a nut crusher, thus avoiding safety hazards to a certain extent. Attached Figure Description

[0011] Figure 1 1. This is a schematic diagram of the structure of this utility model.

[0012] Among them, 1. Locking nut; 2. Hollow quartz ball; 3. M5 socket head cap screw; 4. Horizontal hole. Detailed Implementation

[0013] To make the purpose, principle and structure of this utility model clearer, the following description is provided in conjunction with the accompanying drawings and specific embodiments.

[0014] See Figure 1 This utility model provides an anti-loosening street light pole locking nut assembly, including a locking nut 1 and an anti-loosening mechanism. The locking nut 1 has an M5 horizontal hole 4 extending through to its internal threaded hole on its right side. The specific position of the M5 horizontal hole can be selected according to actual conditions. The anti-loosening mechanism includes a hollow quartz ball 2, threaded locking adhesive, and an M5 socket head cap screw 3. The hollow quartz ball 2 is disposed within the M5 horizontal hole, and its wall thickness is 0.2-0.5 mm. mm, crushed particle size less than 100 mesh, internal filling amount of thread-locking adhesive of 60-80% of volume, its outer diameter is clearance fit with M5 transverse hole 4, the thread-locking adhesive is a mixture of quartz fragments and locking adhesive, M5 internal hexagon set screw 3 has screwing pressure to crush quartz balls, the thread end of M5 internal hexagon set screw 3 is provided with a conical crushing head, used to break the hollow quartz ball 2, the thread-locking adhesive inside the foundation, the thread length is 1-2 mm shorter than the depth of the through hole.

[0015] In actual operation, firstly, select any one of the six sides of the locking nut 1 to drill an M5 through hole in the direction of the internal thread of the nut. Then, insert a hollow quartz ball 2 into the M5 threaded transverse hole 4. Next, screw in the M5 socket head cap screw 3 to break the hollow quartz ball 2 and squeeze out the thread locking glue. After 24 hours, the nut will be unable to loosen. If disassembly is required, it can only be done by a nut crusher.

[0016] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and novel concept of this utility model, should be included within the protection scope of this utility model.

Claims

1. A locking nut assembly for preventing loosening of street light poles, characterized in that... include A locking nut, wherein the locking nut has an M5 transverse hole on either side thereof that extends through to the internal threaded hole of the locking nut; The anti-loosening mechanism includes a hollow quartz ball disposed in the M5 transverse hole, threaded locking adhesive, and an M5 internal hexagon set screw. The hollow quartz ball is pre-encapsulated with threaded locking adhesive, and its outer diameter is clearance-fitted with the M5 transverse hole. The M5 internal hexagon set screw has the screwing pressure to break the quartz ball.

2. The anti-loosening street light pole locking nut assembly as described in claim 1, characterized in that... The hollow quartz sphere has a wall thickness of 0.2-0.5 mm, a crushed particle size of less than 100 mesh, and is filled with 60-80% of its volume with thread-locking adhesive.

3. The anti-loosening street light pole locking nut assembly as described in claim 1, characterized in that... The M5 socket head cap screw has a tapered break head at the end of its thread, and the thread length is 1-2 mm shorter than the depth of the through hole.

Citation Information

Patent Citations

  • Fastener anti-loosening device suite for lamp post

    CN220668109U