High-strength locking nut

Abstract

The utility model relates to the technical field of nuts, and discloses a high-strength locking nut which comprises a nut shell, a threaded hole is formed in the middle of the interior of the nut shell, locking bolts are connected to the front portion, the left side and the right side of the nut shell in a screwed mode, and oil injection holes are formed in the rear portion, the left side and the right side of the nut shell. And the nylon block is arranged at the inner end of the locking bolt, oil storage cavities are formed in the positions, corresponding to the inner ends of the oil injection holes, of the interior of the nut shell, and oil discharge holes are formed in the positions, located on the lower sides of the oil storage cavities, of the interior of the nut shell. According to the high-strength locking nut, the multiple sets of locking bolts are additionally arranged, after the nut shell and the bolts are assembled through the threaded holes, the locking bolts are rotated to drive the nylon blocks to move, so that the nylon blocks extrude threads on the surfaces of the bolts, the bolts can be locked, and compared with pure springback locking of nylon rings, the locking effect is better; and the locking quality of the nut is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of nuts, and specifically relates to a high-strength locking nut. Background Art

[0002] High-strength locking nuts are nuts made of high-strength materials. They usually have high tensile strength and yield strength, as well as good wear resistance and corrosion resistance. These nuts are designed to provide a reliable locking effect in various industrial applications, especially in vibrating or impact environments, and can effectively prevent the loosening of threaded connections.

[0003] Common high-strength locking nuts consist of a nut shell, a threaded hole, and a nylon ring. During the installation process, the threads of the bolt squeeze the nylon embedded in the nut, causing the nylon to undergo plastic deformation. Once the installation is complete, a tight contact is formed between the nylon and the threads, and the nylon generates a resilience force on the bolt, which helps to maintain the locked state of the nut.

[0004] However, although the nylon ring has certain wear resistance and corrosion resistance in this way, under some extreme working conditions, such as high temperature, high pressure, high-speed vibration, or chemical erosion environments, the nylon ring will gradually wear due to physical and chemical effects. This wear will lead to a decrease in the locking ability of the nut. And because the nut needs to be lubricated internally during long-term use, and since the top is relatively tight after the nut is screwed onto the bolt, it is impossible to immerse the inner wall of the nut when lubricating, resulting in poor performance of the nut and unable to meet the working requirements of the nut. Therefore, a high-strength locking nut is proposed. Content of the Utility Model

[0005] (1) Technical Problems to be Solved

[0006] Aiming at the deficiencies of the prior art, the utility model provides a high-strength locking nut to solve the technical problem that the nylon ring will gradually wear due to physical and chemical effects, and this wear will lead to a decrease in the locking ability of the nut.

[0007] (2) Technical Solutions

[0008] To achieve the above purpose, the utility model provides the following technical solutions: A high-strength locking nut, comprising:

[0009] A nut shell, a threaded hole is provided at the middle position inside the nut shell, locking bolts are screwed on the front part and the left and right sides of the nut shell, and oil injection holes are provided at the rear part and the left and right sides of the nut shell;

[0010] A nylon block is installed at the inner end of the locking bolt. Oil storage cavities are provided at positions corresponding to the inner ends of the oil injection holes inside the nut housing, and oil discharge holes are provided at positions below the oil storage cavities inside the nut housing.

[0011] Preferably, the edges at the upper and lower sides of the outer part of the nut housing are rounded. A nylon ring is clamped at the lower side inside the nut housing, improving the locking performance of the nut.

[0012] Preferably, the shapes of the oil storage cavities are spherical, increasing the storage capacity of the lubricating oil inside the oil storage cavities. The interiors of the oil injection holes and the oil discharge holes are both connected to the interior of the oil storage cavities, and the inner side of the oil discharge hole penetrates through the interior of the threaded hole, facilitating the penetration of the lubricating oil inside the oil storage cavity into the threaded hole.

[0013] Preferably, convex strips are welded to both the upper and lower sides of the outer part of the nut housing, and ball heads are installed at positions corresponding to the outer corners of the outer part of the nut housing, improving the strength of the nut housing and avoiding the problem of local deformation.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the present utility model provides a high-strength locking nut, which has the following beneficial effects:

[0016] 1. For this high-strength locking nut, through the addition of multiple groups of locking bolts, after the nut housing is assembled with the bolt through the threaded hole, the locking bolt can be rotated to drive the movement of the nylon block, so that the nylon block can squeeze the thread on the surface of the bolt, and then the nylon block undergoes plastic deformation, generating a resilience force on the bolt, thereby locking the bolt. Since the nylon block is limited by the locking bolt for extrusion, compared with the simple resilience locking of the nylon ring, the locking quality of the nut is improved.

[0017] 2. For this high-strength locking nut, through the provided oil storage cavities, oil injection holes and oil discharge holes, lubricating oil can be injected into the oil storage cavity through the oil injection hole after the nut is installed. Since the oil injection hole is inclined upward, the lubricating oil will always be stored inside the oil storage cavity after being injected. Since the oil discharge hole is inclined towards the inside of the threaded hole, the lubricating oil inside the oil storage cavity will gradually penetrate between the threaded holes, facilitating self-lubrication inside the nut. At the same time, after the nut is removed, the oil discharge hole will quickly flow out due to the loss of the bolt's limitation, thereby achieving the purpose of cleaning and lubricating the inside of the threaded hole and improving the quality of nut use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of the present utility model;

[0019] Figure 2Schematic diagram of the longitudinal sectional structure of the nut housing of the present utility model;

[0020] Figure 3 Schematic diagram of the enlarged structure at the oil storage cavity of the present utility model;

[0021] Figure 4 Schematic diagram of the transverse sectional structure of the nut housing of the present utility model.

[0022] In the figure: 1, nut housing; 2, threaded hole; 3, locking bolt; 4, oil storage cavity; 5, oil injection hole; 6, oil drain hole; 7, nylon block; 8, rib; 9, ball head; 10, nylon ring. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] The present utility model provides a technical solution, a high-strength locking nut, including a nut housing 1, a threaded hole 2, a locking bolt 3, an oil storage cavity 4, an oil injection hole 5, an oil drain hole 6, a nylon block 7, a rib 8, a ball head 9, and a nylon ring 10:

[0025] Please refer to Figure 1 , a threaded hole 2 is provided in the middle position inside the nut housing 1, and the edges at the upper and lower sides of the outside of the nut housing 1 are both rounded. Please refer to Figure 2 , a nylon ring 10 is snap-fitted inside the lower side of the nut housing 1. Please refer to Figure 1 , ribs 8 are welded on both the upper and lower sides of the outside of the nut housing 1, and ball heads 9 are installed at positions corresponding to the external corners of the nut housing 1 on the outside of the ribs 8. Locking bolts 3 are screwed on the front part and the left and right sides of the nut housing 1, and oil injection holes 5 are provided on the rear part and the left and right sides of the nut housing 1;

[0026] Please refer to Figure 4 , the nylon block 7 is installed at the inner end of the locking bolt 3. By adding a plurality of locking bolts 3, after the nut housing 1 is assembled with the bolt through the threaded hole 2, the locking bolt 3 can be rotated to drive the movement of the nylon block 7, so that the nylon block 7 can squeeze the thread on the surface of the bolt, and then the nylon block 7 undergoes plastic deformation, so that the nylon block 7 generates a resilience force on the bolt, so that the bolt can be locked. Since the nylon block 7 is limited by extrusion through the locking bolt 3, compared with the simple resilience locking of the nylon ring 10, the locking quality of the nut is improved. Please refer to Figure 3, oil storage cavities 4 are provided at positions corresponding to the inner ends of the oil injection holes 5 inside the nut housing 1, oil discharge holes 6 are provided at positions below the oil storage cavities 4 inside the nut housing 1, the shapes of the oil storage cavities 4 are all spherical, the interiors of the oil injection holes 5 and the oil discharge holes 6 are both connected to the interior of the oil storage cavity 4, the inner side of the oil discharge hole 6 penetrates through the interior of the threaded hole 2. By providing the oil storage cavity 4, the oil injection hole 5 and the oil discharge hole 6, lubricating oil can be injected into the interior of the oil storage cavity 4 through the oil injection hole 5 after the nut is installed. Since the oil injection hole 5 is inclined upward, the lubricating oil will always be stored inside the oil storage cavity 4 after being injected. Since the oil discharge hole 6 is inclined toward the interior of the threaded hole 2, the lubricating oil inside the oil storage cavity 4 will gradually penetrate between the threaded holes 2, facilitating self-lubrication of the interior of the nut. At the same time, after the nut is removed, the oil discharge hole 6 will quickly drain out due to the loss of the limit of the bolt, and thus the purpose of cleaning and lubricating the interior of the threaded hole 2 can be achieved, improving the quality of nut use.

[0027] In this solution, through the addition of multiple locking bolts 3, after the nut housing 1 is assembled with the bolt through the threaded hole 2, the locking bolt 3 can be rotated to drive the movement of the nylon block 7, so that the nylon block 7 can squeeze the threads on the surface of the bolt, and then the nylon block 7 undergoes plastic deformation, causing the nylon block 7 to generate a resilience force on the bolt, enabling the bolt to be locked. Since the nylon block 7 is squeezed and limited by the locking bolt 3, compared with the simple resilience locking of the nylon ring 10, the locking quality of the nut is improved. At the same time, by providing the oil storage cavity 4, the oil injection hole 5 and the oil discharge hole 6, lubricating oil can be injected into the interior of the oil storage cavity 4 through the oil injection hole 5 after the nut is installed. Since the oil injection hole 5 is inclined upward, the lubricating oil will always be stored inside the oil storage cavity 4 after being injected. Since the oil discharge hole 6 is inclined toward the interior of the threaded hole 2, the lubricating oil inside the oil storage cavity 4 will gradually penetrate between the threaded holes 2, facilitating self-lubrication of the interior of the nut. At the same time, after the nut is removed, the oil discharge hole 6 will quickly drain out due to the loss of the limit of the bolt, and thus the purpose of cleaning and lubricating the interior of the threaded hole 2 can be achieved, improving the quality of nut use.

[0028] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0029] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A high-strength locking nut, characterized in that: include: A nut housing (1) is provided with a threaded hole (2) at a middle position inside the nut housing (1), a locking bolt (3) is screwed to the front and left and right sides of the nut housing (1), and an oil filling hole (5) is provided at the rear and left and right sides of the nut housing (1); a nylon block (7) is mounted on the inner end of the locking bolt (3), an oil storage cavity (4) is provided inside the nut housing (1) at a position corresponding to the inner end of the oil filling hole (5), and an oil discharge hole (6) is provided inside the nut housing (1) at a position below the oil storage cavity (4).

2. A high-strength locking nut according to claim 1, characterized in that: The edges of the upper and lower sides of the exterior of the nut shell (1) are both rounded, and a nylon ring (10) is clamped on the lower side of the interior of the nut shell (1).

3. A high-strength locking nut according to claim 1, characterized in that: The oil storage chamber (4) is spherical in shape, the interiors of the oil filling hole (5) and the oil drain hole (6) are both connected to the interior of the oil storage chamber (4), and the inner side of the oil drain hole (6) passes through the interior of the threaded hole (2).

4. A high-strength locking nut according to claim 1, characterized in that: The upper and lower sides of the exterior of the nut shell (1) are welded with convex strips (8), and the exterior of the convex strips (8) and the positions corresponding to the exterior corners of the nut shell (1) are provided with ball heads (9).

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