Anti-corrosion structure at bolt joint
By designing a multi-layer anti-corrosion structure at the bolt connection, including the base material anti-corrosion layer, the water-based steel structure anti-corrosion paint layer, the resin protective layer and the anti-corrosion coating layer, the problem of bolts being easily corroded outdoors or in the wild is solved, and heat resistance and moisture resistance are achieved , shock absorption, insulation and other properties have been improved, and the service life has been extended.
Patent Information
- Application Number
- CN202421325864.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-12
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-06-12
AI Technical Summary
Because bolts are outdoors or in the wild for a long time, they are susceptible to environmental stress, which leads to corrosion, affecting the normal use of power facilities, and lack anti-corrosion and rust functions, which leads to rust due to rainwater during use outside the world, affecting the fixing effect.
An anti-corrosion structure at the bolt connection is designed, including screws, nuts, limit rings, gaskets, anti-corrosion layer of substrate, anti-corrosion paint layer of water-based steel structure, resin protective layer and anti-corrosion coating layer. Through the combination of these layers, Provides strong corrosion and rust protection.
It effectively improves the heat resistance, moisture resistance, shock absorption, insulation and other properties of the anti-corrosion structure, provides strong protection, extends the service life, and solves the problem that bolts do not have anti-corrosion and rust function, and prevents rust caused by rainwater. Improved fixed strength.
Smart Images
Figure CN222502348U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bolt fasteners, in particular to an anti-corrosion structure of a bolt connection. Background Art
[0002] A bolt is a cylindrical threaded fastener that is paired with a nut. It is a type of fastener consisting of a head and a screw. It needs to be matched with a nut and is used to fasten two parts with through holes. This type of connection is called a bolt connection. If the nut is unscrewed from the bolt, the two parts can be separated, so the bolt connection is a detachable connection.
[0003] Bolts are exposed to great environmental stress for a long time outdoors or even in the wild. They are easily corroded, which affects the normal use of power facilities. They do not have anti-corrosion and anti-rust functions, which leads to rust due to rain when used outdoors, affecting their fixing effect.
[0004] Based on this, an anti-corrosion structure of a bolt connection is now provided, which can eliminate the disadvantages of the existing device. Utility Model Content
[0005] The purpose of the utility model is to provide an anti-corrosion structure for a bolt connection to solve the problem in the background technology that the bolts are exposed to great environmental stress and are easily corroded due to being outdoors or even in the wild for a long time, thus affecting the normal use of power facilities, and the bolts do not have the anti-corrosion and anti-rust functions, resulting in rust due to rain when used outdoors, thus affecting the fixing effect.
[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0007] A corrosion resistant structure for a bolted joint comprises a screw rod, a nut is arranged at the top end of the screw rod, a nut is rotatably connected to the screw rod by a thread, a limit ring is arranged at the bottom surface of the nut on the screw rod, a gasket is sleeved on the screw rod, a base material corrosion resistant layer is arranged on the outer surface of the screw rod, a water-based steel structure corrosion resistant paint layer is arranged on the outer surface of the base material corrosion resistant layer, a resin protective layer is arranged on the outer surface of the water-based steel structure corrosion resistant paint layer, and an anti-corrosion coating layer is arranged on the outer surface of the resin protective layer.
[0008] On the basis of the above technical solutions, the present invention also provides the following optional technical solutions:
[0009] In an optional solution: the thickness of the substrate anti-corrosion layer is 0.015mm-0.018mm.
[0010] In an optional embodiment: the substrate anti-corrosion layer is composed of a reducing agent and an organic nanomaterial.
[0011] In an optional solution: the thickness of the water-based steel structure anti-corrosion paint layer is 0.021mm-0.026mm.
[0012] In an optional solution: the thickness of the resin protective layer is 0.018mm-0.023mm.
[0013] In an optional solution: the thickness of the anti-corrosion coating layer is 0.022mm-0.028mm.
[0014] In an optional solution, the outer diameter of the limiting ring is the same as the inner diameter of the gasket.
[0015] In an optional solution: the screw is made of stainless steel.
[0016] In an optional solution: a waterproof cover is provided on the top of the nut, a limiting groove is provided on the bottom of the waterproof cover, and the limiting groove has the same shape and size as the nut, a pull ring is provided on the top of the waterproof cover, and the inner wall of the limiting groove is made of rubber.
[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:
[0018] The utility model arranges a limiting ring on the bottom surface of the nut on the screw, a gasket is sleeved on the screw, a base material anti-corrosion layer is arranged on the outer surface of the screw, a water-based steel structure anti-corrosion paint layer is arranged on the outer surface of the base material anti-corrosion layer, a resin protective layer is arranged on the outer surface of the water-based steel structure anti-corrosion paint layer, and an anti-corrosion coating layer is arranged on the outer surface of the resin protective layer. This can effectively improve the heat resistance, moisture resistance, shock absorption, insulation and other properties of the entire anti-corrosion structure, provide strong protection, and extend its service life. The stainless steel material of the screw is corrosion-resistant and not easy to rust. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model.
[0020] Figure 2 This is a schematic diagram of the waterproof cover structure of the utility model.
[0021] Figure 3 The schematic diagram of the screw structure of the utility model is
[0022] Figure 4 This is a schematic diagram of the internal structure of the screw of the utility model.
[0023] Notes on figure numbers: 1. Screw; 2. Nut; 3. Limiting ring; 4. Gasket; 5. Nut; 6. Base material anti-corrosion layer; 7. Water-based steel structure anti-corrosion paint layer; 8. Resin protective layer; 9. Anti-corrosion coating layer; 10. Waterproof cover; 11. Pull ring; 12. Limiting groove. DETAILED DESCRIPTION
[0024] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.
[0025] Example 1
[0026] In one embodiment, Figure 1-Figure 4 As shown, an anti-corrosion structure at a bolt connection comprises a screw rod 1, a nut 2 is arranged at the top end of the screw rod 1, a nut 5 is threadedly connected to the screw rod 1, a limiting ring 3 is arranged on the bottom surface of the nut 2 on the screw rod 1, a gasket 4 is sleeved on the screw rod 1, a base material anti-corrosion layer 6 is arranged on the outer surface of the screw 1, a water-based steel structure anti-corrosion paint layer 7 is arranged on the outer surface of the base material anti-corrosion layer 6, a resin protective layer 8 is arranged on the outer surface of the water-based steel structure anti-corrosion paint layer 7, and an anti-corrosion coating layer 9 is arranged on the outer surface of the resin protective layer 8, which can effectively improve the heat resistance, moisture resistance, shock absorption, insulation and other properties of the entire anti-corrosion structure, provide strong protection and extend its service life.
[0027] In one embodiment, Figure 4 As shown, the thickness of the substrate anti-corrosion layer 6 is 0.015 mm-0.018 mm, which can improve the anti-corrosion effect of the internal contact surface.
[0028] In one embodiment, Figure 4 As shown, the substrate anti-corrosion layer 6 is composed of a reducing agent and an organic nanomaterial, and the reducing agent reduces the oxide in a redox reaction.
[0029] In one embodiment, Figure 4 As shown, the water-based steel structure anti-corrosion paint layer 7 is 0.021mm-0.026mm thick, which has the function of anti-corrosion and anti-rust, and increases the fixing strength of the bolts, solving the problem that the existing bolts do not have the function of anti-corrosion and anti-rust, resulting in rust due to rain when used outdoors, thus affecting the fixing effect.
[0030] In one embodiment, Figure 4 As shown, the thickness of the resin protective layer 8 is 0.018mm-0.023mm, and it has the properties of heat resistance, moisture resistance, shock absorption, insulation, etc., providing strong protection and extending its service life.
[0031] In one embodiment, Figure 4 As shown, the anti-corrosion coating layer 9 has a thickness of 0.022 mm to 0.028 mm, which can prevent the bolts from rusting.
[0032] Example 2
[0033] In one embodiment, Figure 2 As shown, the outer diameter of the limiting ring 3 is the same as the inner diameter of the gasket 4, and the gasket 4 can be fixed on the outside of the limiting ring 3 to facilitate the gasket 4 to be more stable.
[0034] In one embodiment, Figure 1 As shown, the material of the screw rod 1 is stainless steel, which is corrosion-resistant and not easy to rust.
[0035] In one embodiment, Figure 2 As shown, a waterproof cover 10 is provided at the top of the nut 2, and a limiting groove 12 is provided at the bottom of the waterproof cover 10, and the limiting groove 12 has the same shape and size as the nut 2. A pull ring 11 is provided at the top of the waterproof cover 10, and the inner wall material of the limiting groove 12 is rubber. The waterproof cover 10 has a waterproof effect, which can prevent rainwater from entering the connection along the nut 2 to prevent rust. The limiting groove 12 at the bottom of the waterproof cover 10 can be buckled on the nut 2 for quick installation. The rubber has an anti-slip effect, which can increase the friction with the nut 2 to prevent falling off. When disassembling, just pull the pull ring 11.
[0036] The above embodiment discloses an anti-corrosion structure for a bolt connection. The base anti-corrosion layer 6 on the outer surface of the screw, the water-based steel structure anti-corrosion paint layer 7, the resin protective layer 8 and the anti-corrosion coating layer 9 are used in combination to effectively improve the heat resistance, moisture resistance, shock absorption, insulation and other properties of the entire anti-corrosion structure, provide strong protection, and extend its service life. The stainless steel material of the screw is corrosion-resistant and not easy to rust. It not only has the function of anti-corrosion and rust prevention, but also increases the fixing strength of the bolt, solving the problem that the existing bolts do not have the function of anti-corrosion and rust prevention, resulting in rust due to rain when used in the outside, affecting its fixing effect.
[0037] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.
Claims
1. An anti-corrosion structure for a bolt connection, comprising a screw rod (1), a nut (2) being arranged at the top of the screw rod (1), a nut (5) being rotatably connected to the screw rod (1), characterized in that: A limit ring (3) is arranged on the bottom surface of the nut (2) on the screw (1), a gasket (4) is sleeved on the screw (1), a base material anti-corrosion layer (6) is arranged on the outer surface of the screw (1), a water-based steel structure anti-corrosion paint layer (7) is arranged on the outer surface of the base material anti-corrosion layer (6), a resin protective layer (8) is arranged on the outer surface of the water-based steel structure anti-corrosion paint layer (7), and an anti-corrosion coating layer (9) is arranged on the outer surface of the resin protective layer (8).
2. The anti-corrosion structure of the bolted joint according to claim 1, characterized in that: The thickness of the substrate anti-corrosion layer (6) is 0.015 mm to 0.018 mm.
3. The anti-corrosion structure of the bolt connection according to claim 1, characterized in that: The substrate anti-corrosion layer (6) is composed of a reducing agent and an organic nano material.
4. The anti-corrosion structure of the bolt connection according to claim 1, characterized in that: The thickness of the water-based steel structure anticorrosive paint layer (7) is 0.021 mm-0.026 mm.
5. The anti-corrosion structure of the bolted joint according to claim 1, characterized in that: The thickness of the resin protective layer (8) is 0.018 mm-0.023 mm.
6. The anti-corrosion structure of the bolted joint according to claim 1, characterized in that: The anti-corrosion coating layer (9) has a thickness of 0.022 mm to 0.028 mm.
7. The anti-corrosion structure of the bolted joint according to claim 1, characterized in that: The outer diameter of the limiting ring (3) is the same as the inner diameter of the gasket (4).
8. The anti-corrosion structure of bolted joint according to claim 1, characterized in that: The material of the screw (1) is stainless steel.
9. The anti-corrosion structure of the bolt connection according to claim 1, characterized in that: The top of the nut (2) is provided with a waterproof sleeve (10), the bottom of the waterproof sleeve (10) is provided with a limiting groove (12), and the limiting groove (12) has the same shape and size as the nut (2), the top of the waterproof sleeve (10) is provided with a pull ring (11), and the inner wall of the limiting groove (12) is made of rubber.