Waterproof structure of comprehensive rod reference hole

Abstract

The utility model belongs to the technical field of road comprehensive rods, and particularly relates to a waterproof structure of a hole for a comprehensive rod. A continuous zinc coating is reserved on the inner wall of the reference hole; the elastic sealing assembly comprises a base, the outer diameter or width of which is greater than the aperture of the reference hole; the cylindrical inserting part axially extends backwards from the base, and the outer diameter of the cylindrical inserting part is in interference fit with the zinc coating on the inner wall of the reference hole; the guide hole penetrates through the base and the cylindrical inserting part, and the inner diameter of the guide hole is smaller than the outer diameter of the waterproof cable gland; the waterproof cable gland extrudes the inner wall of the guide hole when screwed in, and the elasticity of the inner wall of the guide hole allows the guide hole to be compressed and tightly attached to the threaded section of the qualified cable gland. On the premise that a complete zinc coating on the inner wall of the comprehensive rod introducing hole is reserved, tight sealing of the waterproof cable gland is achieved, the corrosion resistance of the zinc coating is prevented from being damaged by tapping, traditional thread machining is not needed, the problem that in the prior art, the sequence of hot galvanizing and the sequence of the tapping technology are contradictory is solved, and the service life of the cable gland is prolonged. And meanwhile, the waterproof reliability and the anti-corrosion long-term effect are achieved.

Description

Technical Field

[0001] This utility model belongs to the field of road composite pole technology, specifically relating to a waterproof structure for holes in composite poles. Background Technology

[0002] To accommodate future uncertainties and product placement, composite masts typically require drilling an M22*1.5 reference hole every meter at a height of 2.5 to 8 meters on all four sides, with tapping required. The mast surface must be hot-dip galvanized. However, current technology presents two problems: First, if hot-dip galvanizing is performed after tapping, the galvanized layer will clog the threads, rendering the zinc layer useless for corrosion protection. Second, if tapping is performed after galvanizing, the galvanized layer will disappear, again negating the purpose of galvanizing. This is a contradiction that currently cannot be resolved. Summary of the Invention

[0003] The purpose of this invention is to solve the problem in the prior art where the order of tapping and hot-dip galvanizing processes is contradictory, resulting in the destruction of the galvanized layer at the threaded hole and the inability to simultaneously achieve corrosion resistance and thread function.

[0004] To achieve the above objectives, a waterproof structure for the reference hole of the composite rod is designed, wherein the inner wall of the reference hole retains a continuous zinc coating layer formed after the hot-dip galvanizing process of the composite rod;

[0005] Also includes

[0006] The resilient sealing assembly, made of a resilient material, includes:

[0007] The base has an outer diameter or width larger than the diameter of the reference hole;

[0008] A cylindrical insertion part extends axially from the base to the rear, and its outer diameter forms an interference fit with the zinc plating layer on the inner wall of the reference hole;

[0009] The guide hole penetrates the base and the plug-in part, and its inner diameter is smaller than the outer diameter of the thread of the waterproof gland.

[0010] When the waterproof flange is screwed in, it presses against the inner wall of the guide hole. The elasticity of the inner wall of the guide hole allows it to be compressed and tightly fit the threaded section of the qualified flange.

[0011] Preferably, the end of the cylindrical plug is provided with a conical surface, and the front of the cylindrical plug is provided with a limiting part with an outer diameter larger than other parts.

[0012] Preferably, the rear part of the base is provided with a raised arc portion, which is connected to the cylindrical insertion portion.

[0013] Compared with the prior art, the advantages of this utility model are:

[0014] This invention achieves a tight seal of the waterproof gland head by using the interference fit and compression deformation of the elastic sealing component, while preserving the complete galvanized layer on the inner wall of the integrated rod reference hole. This avoids damaging the anti-corrosion performance of the galvanized layer by tapping, and eliminates the need for traditional thread processing. It completely solves the problem of the contradictory sequence of hot-dip galvanizing and tapping processes, while also providing both waterproof reliability and long-lasting anti-corrosion performance. Attached Figure Description

[0015] Figure 1 A schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a front view of the present invention;

[0017] Figure 3 This is a side view of the present invention;

[0018] Figure 4 This is a top view of the present invention;

[0019] Figure 5 This is a bottom view of the present invention.

[0020] The components include: 1. elastic sealing assembly; 2. base; 3. insertion part; 4. guide hole; 5. limiting part; and 6. arc part. Detailed Implementation

[0021] 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.

[0022] See Figures 1-5 This utility model provides a waterproof structure for a composite rod hole. The structure includes an elastic sealing component 1, made of elastic materials such as rubber or silicone. The elastic sealing component 1 includes a base 2, the outer diameter or width of which is larger than the diameter of the reference hole. A cylindrical insertion part 3 extends axially from the base 2 to the rear. The outer diameter of the cylindrical insertion part 3 forms an interference fit with the galvanized inner wall of the reference hole. The end of the cylindrical insertion part 3 has a tapered surface. The front part of the cylindrical insertion part 3 has a limiting part 5 with an outer diameter larger than other parts. The rear part of the base 2 has a raised arc part 6 connected to the cylindrical insertion part 3. A guide hole 4 passes through the base 2 and the cylindrical insertion part 3. The inner diameter of the guide hole 4 is smaller than the threaded outer diameter of the waterproof gland. When the waterproof gland is screwed in, it compresses the inner wall of the guide hole 4. The elasticity of the inner wall of the guide hole 4 allows it to be compressed and tightly fit the threaded section of the qualified gland.

[0023] In the specific operation of this utility model, after the composite rod is hot-dip galvanized, a ∅21.6 round punch is used to impact the reserved holes on the composite rod to make each hole reach the standard value. The inner wall of the reference hole retains a 0.7mm continuous zinc layer formed by the hot-dip galvanizing process of the composite rod. At the same time, a composite material rubber ring is inserted. The thin rubber on the composite rubber ring does not need to be tapped, and the waterproof gland can be directly screwed in. This not only does not damage the zinc layer, but also provides waterproofing and solves the problem of tapping.

[0024] 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 waterproof structure for a composite rod reference hole, characterized in that: The inner wall of the reference hole retains a continuous zinc coating formed after the hot-dip galvanizing process of the composite rod; Also includes The resilient sealing assembly, made of a resilient material, includes: The base has an outer diameter or width larger than the diameter of the reference hole; A cylindrical insertion part extends axially from the base to the rear, and its outer diameter forms an interference fit with the zinc plating layer on the inner wall of the reference hole; A guide hole penetrates the base and the cylindrical insertion part, and its inner diameter is smaller than the outer diameter of the thread of the waterproof gland. When the waterproof flange is screwed in, it presses against the inner wall of the guide hole. The elasticity of the inner wall of the guide hole allows it to be compressed and tightly fit the threaded section of the qualified flange.

2. The waterproof structure of the integrated rod reference hole as described in claim 1, characterized in that... The end of the cylindrical plug is provided with a conical surface, and the front of the cylindrical plug is provided with a limiting part with an outer diameter larger than other parts.

3. The waterproof structure of the integrated rod reference hole as described in claim 1, characterized in that... The base has a raised arc portion at the rear, which is connected to a cylindrical insertion portion.

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