A corrosion-resistant, high-strength hexagonal nut

Abstract

This utility model discloses a corrosion-resistant, high-strength hexagonal nut, relating to the field of corrosion-resistant nut technology. It includes a locking nut and a sealing sleeve, connected by a locking mechanism, which is a detachable structure. The locking mechanism includes a threaded groove, a circular groove, an annular plate, several springs, a sealing groove, and a connecting ring. The beneficial effect of this utility model is that, by connecting the locking nut and the sealing sleeve through a locking mechanism, firstly, the locking nut is screwed onto the bolt, working with an O-ring to seal the threads and the supporting surface. Then, the sealing sleeve is screwed on, and the connecting ring compresses several springs, clamping the bolt to prevent loosening and providing a sealing effect, preventing corrosive media from contacting the threads inside the threaded hole, thereby improving corrosion resistance.

Description

Technical Field

[0001] This utility model relates to the field of corrosion-resistant nut technology, specifically a corrosion-resistant high-strength hexagonal nut. Background Technology

[0002] As a key component in mechanical connections, corrosion-resistant hexagonal nuts require performance optimization that balances core needs such as corrosion resistance, anti-loosening, and compatibility. The corrosion resistance of the nut primarily depends on the chemical stability of the material itself and surface treatment techniques. Currently, mainstream solutions include stainless steel base materials and composite protective structures.

[0003] Nut corrosion is a destructive phenomenon caused by chemical or electrochemical reactions between metal exposed to high-temperature environments and the surrounding medium. Corrosion leads to thread wear or deformation, reducing the fit accuracy between the nut and bolt, hindering effective load transfer, and affecting the structural load-bearing capacity and stability. Furthermore, under the combined effects of corrosive environments and tensile stress, nuts may experience sudden brittle fracture. This failure mode is insidious and sudden, posing a significant threat. Utility Model Content

[0004] To address the above deficiencies, this utility model provides a corrosion-resistant, high-strength hexagonal nut to solve the corrosion problem of hexagonal nuts.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A corrosion-resistant, high-strength hexagonal nut includes a locking nut and a sealing sleeve, wherein the locking nut and the sealing sleeve are connected by a locking mechanism and are detachable.

[0007] The locking mechanism includes a threaded groove, a circular groove, an annular plate, several springs, a closing groove, and a connecting ring. The threaded groove is located at the upper end of the locking nut, the circular groove is located at the lower end of the locking nut and its diameter is larger than that of the threaded groove, the annular plate is fixed at the top of the circular groove, several springs are evenly installed at the bottom of the annular plate and are in an open position, the closing groove is located inside the closing sleeve, and the connecting ring is installed at the upper end of the closing sleeve.

[0008] Furthermore, an O-ring is embedded at the upper end of the locking nut to facilitate the sealing of the threaded groove 3 and the support surface.

[0009] Furthermore, each of the several springs has an outer conical surface at its bottom, and the connecting ring has a corresponding inner conical surface. When the connecting ring is screwed and locked, the inner conical surface can press against the outer conical surface at the bottom of the several springs, thereby closing the several springs and clamping the bolt, thus achieving a sealing effect against loosening.

[0010] Furthermore, the bottom of the circular groove is tapped with an internal thread, and the outer surface of the upper end of the connecting ring is tapped with a corresponding external thread, which facilitates the screwing of the sealing sleeve onto the bottom of the locking nut to complete the bolt sealing, prevent corrosive media from contacting the threads in the threaded hole, and thus improve corrosion resistance.

[0011] Furthermore, a circular hole corresponding to the bolt is opened at the center of the annular plate, so that the bolt can pass through the annular plate.

[0012] Furthermore, the closure is cylindrical with an external hexagonal head connected to the bottom, which facilitates locking the closure through an external handle.

[0013] This utility model provides a corrosion-resistant, high-strength hexagonal nut with the following advantages: it is connected by a locking mechanism between a locking nut and a sealing sleeve. First, the locking nut is screwed onto the bolt, and with the help of an O-ring, the threads and the supporting surface are sealed. Then, the sealing sleeve is screwed on, and the connecting ring squeezes several springs to clamp the bolt, which plays a role in preventing loosening and sealing, preventing corrosive media from contacting the threads inside the threaded hole, thereby improving corrosion resistance. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the installation of the corrosion-resistant high-strength hexagonal nut described in this utility model.

[0015] Figure 2 This utility model Figure 1 Enlarged view of a portion of point A in the middle.

[0016] Figure 3 This is a cross-sectional view of the locking nut described in this utility model.

[0017] Figure 4 This is a schematic diagram of the annular plate described in this utility model.

[0018] Figure 5 This is an external view of the locking nut described in this utility model.

[0019] Figure 6 This is a sectional view of the closed sleeve described in this utility model.

[0020] Figure 7 This is an external view of the closed sleeve described in this utility model.

[0021] In the diagram: 1. Locking nut; 2. Sealing sleeve; 3. Threaded groove; 4. Circular groove; 5. Ring plate; 6. Spring; 7. Sealing groove; 8. Connecting ring; 9. O-ring seal; 10. External conical surface; 11. Internal conical surface; 12. Internal thread; 13. External thread; 14. Circular hole; 15. External hexagonal head. Detailed Implementation

[0022] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0023] Please see Figures 1 to 7 As shown in the figure, this application provides a corrosion-resistant high-strength hexagonal nut, including a locking nut 1 and a sealing sleeve 2. The locking nut 1 and the sealing sleeve 2 are connected by a locking mechanism and are detachable structures. The locking mechanism includes a threaded groove 3, a circular groove 4, an annular plate 5, several springs 6, a sealing groove 7, and a connecting ring 8. The threaded groove 3 is located at the upper end of the locking nut 1, the circular groove 4 is located at the lower end of the locking nut 1 and its diameter is larger than that of the threaded groove 3, the annular plate 5 is fixed at the top of the circular groove 4, several springs 6 are evenly installed at the bottom of the annular plate 5 and are in an open shape, the sealing groove 7 is located in the sealing sleeve 2, and the connecting ring 8 is installed at the upper end of the sealing sleeve 2.

[0024] In this embodiment, the locking nut 1 and the sealing sleeve 2 are made of stainless steel, which has good strength and corrosion resistance. The surface is galvanized to improve its corrosion resistance, functionality, and aesthetics. During installation, the bolt is first passed through the connector, and then the locking nut 1 is screwed onto the bolt. With the help of the top O-ring seal 9, the thread groove 3 and the support surface are sealed. The circular groove 4 is opened at the lower end of the locking nut 1, and its diameter is larger than the size of the thread groove 3, so it does not affect the normal installation of the locking nut 1. Finally, the sealing sleeve 2 is put on the bottom of the bolt and connected to the locking nut 1 through the connecting ring 8. At the same time, the connecting ring 8 can compress several springs 6, so that the springs 6 clamp the bolt, which plays a role in preventing loosening and sealing. Together with the sealing sleeve 2, it prevents corrosive media from contacting the threads inside the threaded hole, thereby improving corrosion resistance.

[0025] In some embodiments, an O-ring 9 is embedded at the upper end of the locking nut 1 to facilitate sealing of the threaded groove 3 and the support surface.

[0026] In some embodiments, the bottom of several springs 6 is provided with an outer conical surface 10, and the inner conical surface 11 is provided in the connecting ring 8. When the connecting ring 8 is screwed and locked, the inner conical surface 11 can press the outer conical surface 10 at the bottom of several springs 6, thereby closing several springs 6 and clamping the bolt, thus playing a role in preventing loosening and sealing.

[0027] In some embodiments, the bottom of the circular groove 4 is tapped with an internal thread 12, and the outer surface of the upper end of the connecting ring 8 is tapped with a corresponding external thread 13, so that the sealing sleeve 2 can be screwed onto the bottom of the locking nut 1 to complete the bolt sealing, prevent corrosive media from contacting the threads in the threaded hole, thereby improving corrosion resistance.

[0028] In some embodiments, a circular hole 14 corresponding to the bolt is opened at the center of the annular plate 5, so that the bolt can pass through the annular plate 5.

[0029] In some embodiments, the closure sleeve 2 is cylindrical, with an external hexagonal head 15 connected to the bottom, which facilitates locking the closure sleeve 2 through an external handle.

[0030] The above technical solution only embodies the preferred technical solution of this utility model. Any changes that may be made by those skilled in the art to certain parts of it embody the principle of this utility model and fall within the protection scope of this utility model.

Claims

1. A corrosion-resistant high-strength hexagonal nut comprising a lock nut (1) and a closure sleeve (2), characterized in that, The locking nut (1) and the closing sleeve (2) are connected by a locking mechanism and are detachable structures; The locking mechanism includes a threaded groove (3), a circular groove (4), an annular plate (5), several springs (6), a closed groove (7), and a connecting ring (8). The threaded groove (3) is located at the upper end of the locking nut (1). The circular groove (4) is located at the lower end of the locking nut (1) and its diameter is larger than that of the threaded groove (3). The annular plate (5) is fixed at the top of the circular groove (4). Several springs (6) are evenly installed at the bottom of the annular plate (5) and are in an open position. The closed groove (7) is located inside the closed sleeve (2). The connecting ring (8) is installed at the upper end of the closed sleeve (2).

2. The corrosion resistant high strength hexagon nut according to claim 1, wherein The upper end of the locking nut (1) is fitted with an O-ring (9).

3. The corrosion resistant high strength hexagon nut of claim 1, wherein Several reeds (6) have an outer conical surface (10) at their bottom, and a corresponding inner conical surface (11) is provided inside the connecting ring (8).

4. The corrosion resistant high strength hexagon nut of claim 1, wherein The bottom of the circular groove (4) is tapped with an internal thread (12), and the outer surface of the upper end of the connecting ring (8) is tapped with a corresponding external thread (13).

5. The corrosion resistant high strength hexagon nut of claim 1, wherein The annular plate (5) has a circular hole (14) at its center corresponding to the bolt.

6. The corrosion resistant high strength hexagon nut of claim 1, wherein The closed sleeve (2) is cylindrical, with an external hexagonal head (15) connected to the bottom.

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