Novel locknut

Abstract

The invention relates to the technical field of fastening parts, in particular to a novel locknut which comprises a nut body and a first gasket. One side of the nut main body is a locking surface arranged towards a to-be-locked piece; the first gasket is arranged on one side of the locking surface of the nut main body; the first gasket is connected with the locking face of the nut body in a meshed mode. The locking face of the nut body is in meshed connection with the first gasket, so that a crossed and staggered structure is formed between the nut body and the first gasket, pre-tightening force is automatically formed, and the nut body is promoted to be fastened again during loosening. The probability that the nut body is automatically loosened, falls off and the like due to the influence of external environmental factors and the limitation of the design principle and the machining technology is greatly reduced, and then the problem that potential safety hazards are caused due to the fact that manual inspection is not timely and not in place is solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of fastening parts, and particularly relates to a new type of locknut. Background Art

[0002] Communication towers include various forms such as single-tube towers, three-tube towers, and angle steel towers. Most of them are fastened by setting nuts, and the friction force that does not change with the external load on the threads of the nuts is used to ensure the setting stability of the communication towers.

[0003] The mechanical properties of bolts and nuts shall comply with the provisions of "Mechanical properties of fasteners - Screws and bolts with specified proof load" GB / T 3098.1 and "Mechanical properties of fasteners - Nuts - Coarse pitch threads" GB / T 3098.2. The quality standards of 4.8-grade screws shall comply with the current national standards "Hexagon head bolts - Product grade C" GB / T 5780 and "Hexagon nuts - Product grade C" GB / T 41, while the quality standards of 6.8, 8.8, and 10.9-grade bolts shall comply with the current national standards "Hexagon head bolts" GB / T 5782 and "Hexagon nuts, style 1" GB / T 6170.

[0004] Among them, the existing nut setting forms generally use double nuts, spring washers, or self-locking nuts to increase the friction force, so as to achieve the purpose of fastening and loosening prevention. However, since communication towers are mainly installed in the external space, the above nuts are extremely vulnerable to the influence of external environmental factors and are restricted by their own design principles and processing technologies, resulting in self-loosening, falling off, etc. At the same time, as the number of communication towers installed increases daily and the installation locations are extensive, it is difficult to detect the above problems in time through manual inspection after self-loosening, falling off, etc., so that they cannot be processed and solved in time, posing a relatively large potential safety hazard. Summary of the Invention

[0005] In view of the above problems, the present invention provides a new type of locknut, including:

[0006] A nut body, one side of which is a locking surface facing the component to be locked;

[0007] A first washer, which is arranged on one side of the locking surface of the nut body;

[0008] The first washer is meshed and connected with the locking surface of the nut body.

[0009] In some specific embodiments, a second washer and a third washer are sequentially arranged on the side of the first washer away from the nut body;

[0010] The second washer and the third washer are meshed and connected.

[0011] In some of the specific embodiments, a plurality of main body connecting teeth are disposed around the locking surface;

[0012] On one side of the first washer close to the nut body, a plurality of first connecting teeth are disposed around;

[0013] A plurality of the main body connecting teeth and a plurality of the first connecting teeth are engaged in one-to-one correspondence.

[0014] In some of the specific embodiments, on one side of the second washer close to the third washer, a plurality of second connecting teeth are disposed around;

[0015] On one side of the third washer close to the second washer, a plurality of third connecting teeth are disposed around;

[0016] A plurality of the second connecting teeth and a plurality of the third connecting teeth are engaged in one-to-one correspondence.

[0017] In some of the specific embodiments, on one side of the second washer close to the first washer, a plurality of second engaging teeth are disposed around, and a plurality of the second engaging teeth are respectively in contact with the first washer.

[0018] In some of the specific embodiments, on one side of the third washer away from the second washer, a plurality of third engaging teeth are disposed around, and a plurality of the third engaging teeth are respectively in contact with the component to be locked.

[0019] In some of the specific embodiments, an internal thread is provided in the nut body;

[0020] The root of the internal thread is a wedge-shaped structure, so that the inclination angle of the root of the internal thread is greater than the inclination angle of the tip of the internal thread.

[0021] In some of the specific embodiments, the included angle range between the extension line of the root of the internal thread and the tip of the internal thread is from 5 degrees to 15 degrees.

[0022] In some of the specific embodiments, a central ring is disposed along the axial direction of the nut body at the middle of the locking surface of the nut body;

[0023] The first washer, the second washer and the third washer are sequentially sleeved on the outer ring surface of the central ring.

[0024] In some of the specific embodiments, the internal thread extends on the inner ring surface of the central ring.

[0025] Compared with the prior art, the novel locknut of the present invention has at least the following advantages: When the nut body is initially loosened, since a first washer capable of meshing with the locking surface is additionally provided on one side of the locking surface of the nut body facing the component to be locked, a cross-misalignment structure can be formed between the first washer and the nut body, so that a pre-tightening force is automatically formed between the nut body and the first washer, prompting the nut body to return to a tightened state. At the same time, by sequentially providing a second washer and a third washer that are meshed with each other on the side of the first washer away from the nut body, the pre-tightening force for the nut body is further increased to ensure the tightness of the nut body. Moreover, due to the internal thread with a wedge-shaped root provided in the nut body, it can be deformed due to the generated pressure after the nut body is tightened, so that an elastic force is formed on the internal thread of the nut body, further improving the anti-loosening effect of the nut body. It greatly reduces the probability of the nut body loosening or falling off by itself due to the influence of external environmental factors and the limitations of its own design principle and processing technology, and thus avoids the problem of potential safety hazards caused by untimely or inadequate manual inspection.

[0026] Other features and advantages of the present invention will be described in the following specification, and, in part, will be obvious from the specification, or will be understood by implementing the present invention. The objectives and other advantages of the present invention can be achieved and obtained through the structures pointed out in the specification and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0028] Figure 1 Shows an exploded view of the novel locknut in the embodiment of the present invention;

[0029] Figure 2 Shows an assembly view of the novel locknut in the embodiment of the present invention;

[0030] Figure 3 Shows a schematic view of the third washer in the embodiment of the present invention;

[0031] Figure 4 Another perspective exploded view of the novel locknut in the embodiment of the present invention.

[0032] In the figure, 100 is the nut body; 110 is the main body connecting teeth; 120 is the central ring; 130 is the internal thread; 200 is the first washer; 210 is the first connecting teeth; 300 is the second washer; 310 is the second connecting teeth; 320 is the second engaging teeth; 400 is the third washer; 410 is the third connecting teeth; 420 is the third engaging teeth. Detailed implementation manners

[0033] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0034] Referring to Figure 1 , an embodiment of the present invention provides a new type of anti-loosening nut, including: a nut body 100 and a first washer 200. One side of the nut body 100 is a locking surface facing the component to be locked. The first washer 200 is arranged on one side of the locking surface of the nut body 100. The first washer 200 is meshed and connected with the locking surface of the nut body 100.

[0035] Specifically, the nut body 100 is threadedly connected to the component to be locked through a bolt. Among them, the side of the nut body 100 close to the component to be locked is the locking surface. A first washer 200 is arranged on the side of the locking surface close to the component to be locked, that is, the first washer 200 is arranged between the locking surface of the nut body 100 and the component to be locked. The first washer 200 is meshed and connected with the locking surface of the nut body 100, so that the first washer 200 and the locking surface of the nut body 100 are engaged with each other. When the nut body 100 is about to break away due to loosening, a cross dislocation structure can be formed between the first washer 200 and the nut body 100, so that a pre-tightening force is automatically formed between the nut body 100 and the first washer 200. The cross dislocation engagement between the first washer 200 and the nut body 100 can offset the attenuation of the clamping force caused by the reduction of the pre-tightening force for the nut body 100, so as to make the nut continuously anti-loosen. Through this pre-tightening force, the nut body 100 becomes tighter as it moves, thereby prompting the nut body 100 to restore tightness again. The probability of the nut body 100 loosening or falling off by itself due to the influence of external environmental factors and the limitations of its own design principle and processing technology is greatly reduced, and thus the problem of potential safety hazards caused by untimely and inadequate manual inspection is avoided.

[0036] In some specific embodiments of the present invention, referring to Figure 1On the side of the first washer 200 away from the nut body 100, a second washer 300 and a third washer 400 are sequentially arranged. The second washer 300 and the third washer 400 are meshed and connected.

[0037] Specifically, on the side of the first washer 200 away from the nut body 100, a second washer 300 and a third washer 400 are sequentially arranged, that is, the second washer 300 and the third washer 400 are sequentially arranged between the first washer 200 and the part to be locked. Among them, the opposite surfaces of the second washer 300 and the third washer 400 are meshed with each other. When the nut body 100 is about to disengage due to loosening, a cross-misaligned structure can also be formed between the second washer 300 and the third washer 400, and then a pre-tightening force is automatically formed between the second washer 300 and the third washer 400. Through the superposition of the pre-tightening force formed between the second washer 300 and the third washer 400 and the pre-tightening force formed between the nut body 100 and the first washer 200, the pre-tightening force for the whole nut body 100 can be further improved. The cross-misaligned bite between the second washer 300 and the third washer 400 can offset the attenuation of the clamping force caused by the reduction of the pre-tightening force for the nut body 100, so as to continuously prevent the nut from loosening, so as to re-promote the nut body 100 to restore tightness, thereby ensuring the tightness of the nut body 100.

[0038] In some specific embodiments of the present invention, referring to Figure 1 On the locking surface, a plurality of main body connecting teeth 110 are arranged in a ring. On the side of the first washer 200 close to the nut body 100, a plurality of first connecting teeth 210 are arranged in a ring. The plurality of main body connecting teeth 110 are meshed with the plurality of first connecting teeth 210 one by one.

[0039] Specifically, a plurality of main body connecting teeth 110 are evenly arranged circumferentially around the nut main body 100 on the locking surface. A plurality of first connecting teeth 210 are evenly arranged circumferentially around the first washer 200 on the side of the first washer 200 close to the nut main body 100. The arrangement positions of the plurality of first connecting teeth 210 and the plurality of main body connecting teeth 110 are arranged in a one-to-one correspondence and crosswise dislocation. When installing the first washer 200 and the nut main body 100, by clamping the spaces between the plurality of first connecting teeth 210 between the corresponding adjacent two main body connecting teeth 110, and at the same time clamping the spaces between the plurality of main body connecting teeth 110 between the corresponding adjacent two first connecting teeth 210, the plurality of first connecting teeth 210 and the plurality of main body connecting teeth 110 are in one-to-one correspondence and respectively engaged, thereby realizing the meshing connection between the first washer 200 and the nut main body 100. In this way, when the nut main body 100 is about to break away due to loosening, a crosswise dislocation structure is formed between the first washer 200 and the nut main body 100 through the first connecting teeth 210 of the first washer 200 and the main body connecting teeth 110 of the nut main body 100, so that a pre-tightening force is automatically formed between the nut main body 100 and the first washer 200. The crosswise dislocation engagement between the first connecting teeth 210 of the first washer 200 and the main body connecting teeth 110 of the nut main body 100 can offset the attenuation of the clamping force caused by the reduction of the pre-tightening force for the nut main body 100, so as to continuously prevent the nut from loosening and to re-promote the nut main body 100 to resume fastening.

[0040] In some specific embodiments of the present invention, referring to Figure 2 , a plurality of second connecting teeth 310 are arranged circumferentially on the side of the second washer 300 close to the third washer 400. A plurality of third connecting teeth 410 are arranged circumferentially on the side of the third washer 400 close to the second washer 300. The plurality of second connecting teeth 310 and the plurality of third connecting teeth 410 are engaged in one-to-one correspondence.

[0041] Specifically, a plurality of second connecting teeth 310 are evenly arranged circumferentially around the second washer 300 on the side of the second washer 300 close to the third washer 400. A plurality of third connecting teeth 410 are evenly arranged circumferentially around the third washer 400 on the side of the third washer 400 close to the second washer 300. The arrangement positions of the plurality of second connecting teeth 310 and the plurality of third connecting teeth 410 correspond one by one. When installing the second washer 300 and the third washer 400, by clamping the spaces between the plurality of second connecting teeth 310 between the corresponding adjacent two third connecting teeth 410, and at the same time clamping the spaces between the plurality of third connecting teeth 410 between the corresponding adjacent two second connecting teeth 310, the plurality of second connecting teeth 310 and the plurality of third connecting teeth 410 are made to correspond one by one and engage respectively, thereby realizing the meshing connection between the second washer 300 and the third washer 400. In this way, when the nut body 100 is about to become disengaged due to loosening, a cross-misalignment structure is also formed between the second washer 300 and the third washer 400 through the second connecting teeth 310 of the second washer 300 and the third connecting teeth 410 of the third washer 400, so that a pre-tightening force can be automatically formed between the third washer 400 and the second washer 300. The cross-misalignment engagement of the second connecting teeth 310 of the second washer 300 and the third connecting teeth 410 of the third washer 400 can offset the attenuation of the clamping force caused by the reduction of the pre-tightening force on the nut body 100, so as to continuously prevent the nut from loosening and further facilitate the re-tightening of the nut body 100 to be restored.

[0042] In some specific embodiments of the present invention, referring to Figure 2 , a plurality of second engaging teeth 320 are arranged circumferentially around the side of the second washer 300 close to the first washer 200, and the plurality of second engaging teeth 320 are respectively in contact with the first washer 200.

[0043] Specifically, a plurality of second engaging teeth 320 are circumferentially and uniformly arranged on the side of the second washer 300 close to the first washer 200, so that the side of the second washer 300 close to the first washer 200 can abut against the first washer 200 through the tips of the plurality of second engaging teeth 320. When the nut body 100 is tightened, pressure is applied in the direction of the second washer 300, so that the inclined surfaces at the tip positions of the plurality of second engaging teeth 320 are deformed to form a straight line, that is, the second engaging teeth 320 can be made elastic. Since the second engaging teeth 320 are subjected to the downward pressure of the nut body 100, a reaction force that pushes upward in the direction of the nut body 100 can be formed through the second engaging teeth 320, thereby further enhancing the pre-tightening force against the nut body 100. When the nut body 100 is stretched or deformed, the deformation of the second engaging teeth 320 of the second washer 300 can offset the attenuation of the clamping force caused by the reduction of the pre-tightening force against the nut body 100, so as to make the nut continuously prevent loosening. At the same time, by abutting the second engaging teeth 320 against the first washer 200, the friction between the second washer 300 and the first washer 200 can be increased, thereby reducing the probability of loosening of the nut body 100.

[0044] In some specific embodiments of the present invention, referring to Figure 2 , a plurality of third engaging teeth 420 are arranged around the side of the third washer 400 away from the second washer 300, and the plurality of third engaging teeth 420 are respectively in contact with the component to be locked.

[0045] Specifically, a plurality of third engaging teeth 420 are circumferentially and uniformly arranged on the side of the third washer 400 away from the second washer 300, so that the side of the third washer 400 away from the second washer 300 can abut against the outer surface of the component to be locked through the tips of the plurality of third engaging teeth 420. When the nut body 100 is tightened, pressure is applied in the direction of the third washer 400, so that the inclined surfaces at the tip positions of the plurality of third engaging teeth 420 are deformed to form a straight line, that is, the third engaging teeth 420 can be made elastic. Since the third engaging teeth 420 are subjected to the downward pressure of the nut body 100, a reaction force that pushes upward in the direction of the nut body 100 can also be formed through the third engaging teeth 420, thereby further enhancing the pre-tightening force against the nut body 100. When the nut body 100 is stretched or deformed, the deformation of the third engaging teeth 420 of the third washer 400 can offset the attenuation of the clamping force caused by the reduction of the pre-tightening force against the nut body 100, so as to make the nut continuously prevent loosening. At the same time, by abutting the third engaging teeth 420 against the outer surface of the component to be locked, the friction between the third washer 400 and the component to be locked can be increased, thereby reducing the probability of loosening of the nut body 100.

[0046] It should be noted that, referring to Figure 3 , the structures and dimensions of the second washer 300 and the third washer 400 are the same. As long as the second washer 300 and the third washer 400 can be ensured to mesh with each other, it is convenient for processing and manufacturing, and they can be produced through the same production line.

[0047] In some specific embodiments of the present invention, referring to Figure 4 , an internal thread 130 is provided in the nut body 100. The root of the internal thread 130 is a wedge-shaped structure, so that the inclination angle of the root of the internal thread 130 is greater than the inclination angle of the tip of the internal thread 130.

[0048] Specifically, the inside of the nut body 100 is hollow, and an internal thread 130 is provided on the inner wall of the nut body 100. The nut body 100 is connected to the bolt through the internal thread 130. Among them, the inclination angle of the root of the internal thread 130 is greater than the inclination angle of the tip of the internal thread 130, so that the shape of the internal thread 130 can be shown as a wedge shape. When the nut body 100 is tightened, pressure will be generated first at the root of the internal thread 130 and deformation will occur, so that a force can be applied to the external thread of the bolt through the root of the internal thread 130, thereby improving the anti-loosening effect of the nut body 100. And, the tip of the external thread of the bolt abuts against the wedge-shaped surface at the root of the internal thread 130 of the nut body 100, which can greatly reduce the slipping caused by hard contact, thereby generating a relatively large locking force.

[0049] It should be noted that when processing the internal thread 130 of the nut body 100, by removing a part of the material at the root of the internal thread 130 of the nut body 100, the inclination angle of the root of the internal thread 130 can be made greater than the inclination angle of the tip of the internal thread 130, and then a wedge-shaped structure at the root of the internal thread 130 is formed.

[0050] In some specific embodiments of the present invention, referring to Figure 4 , the included angle range between the extension line of the root of the internal thread 130 and the tip of the internal thread 130 is 5 degrees to 15 degrees.

[0051] Specifically, when the angle of each tooth of the internal thread 130 of the nut body 100 is 60 degrees, the normal pressure of the internal thread 130 is P = 1.15P0. When a part of the material at the root of the internal thread 130 of the nut body 100 is removed so that the included angle between the root of the internal thread 130 and the extension line of the tip of the internal thread 130 is 15 degrees, that is, the angle of the root of each tooth of the internal thread 130 of the nut body 100 is 45 degrees, the normal pressure of the internal thread 130 is P = 2.21P0. The ratio of the normal pressures between the two is about 1.93, which can correspondingly increase the frictional force for anti-loosening. Among them, at least a part of the material at the root of the internal thread 130 of the nut body 100 needs to be removed so that the included angle between the root of the internal thread 130 and the extension line of the tip of the internal thread 130 is 5 degrees, that is, the angle of the root of each tooth of the internal thread 130 of the nut body 100 is 55 degrees, so as to ensure that the pre-tightening force that meets the basic requirements will be correspondingly increased.

[0052] In some specific embodiments of the present invention, referring to Figure 1 , a central ring 120 is axially provided in the middle of the locking surface of the nut body 100. The first washer 200, the second washer 300, and the third washer 400 are sequentially sleeved on the outer ring surface of the central ring 120.

[0053] Specifically, the central ring 120 is coaxially arranged in the middle of the locking surface of the nut body 100. A plurality of main body connecting teeth 110 on the locking surface are arranged outside the central ring 120 and surround the central ring 120. Moreover, the outer diameter of the central ring 120 is the same as the inner diameters of the first washer 200, the second washer 300, and the third washer 400. When the first washer 200, the second washer 300, and the third washer 400 are sequentially arranged on the locking surface of the nut body 100, and the first washer 200 is meshed and connected with the locking surface of the nut, the second washer 300 abuts against the first washer 200, and the third washer 400 is meshed and connected with the second washer 300, the first washer 200, the second washer 300, and the third washer 400 can just be sleeved on the outer ring surface of the central ring 120. Thus, through the central ring 120, the nut body 100, the first washer 200, the second washer 300, and the third washer 400 can be automatically centered, so as to ensure the accuracy of the meshing connection during installation and avoid affecting the installation stability.

[0054] In some specific embodiments of the present invention, the internal thread 130 extends on the inner ring surface of the central ring 120. The central ring 120 and the nut body 100 are of an integral structure, so that the internal thread 130 is not only provided on the inner wall of the nut body 100, but also can extend on the inner ring surface of the central ring 120, thereby further increasing the area of the internal thread 130 and improving the connection stability between the nut body 100 and the bolt.

[0055] Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A new type of locknut, characterized in that, Comprising: A nut body (100), one side of which is a locking surface facing the component to be locked; A first washer (200), which is arranged on one side of the locking surface of the nut body (100); The first washer (200) is meshed and connected with the locking surface of the nut body (100).

2. The novel locknut according to claim 1, characterized in that, A second washer (300) and a third washer (400) are sequentially arranged on the side of the first washer (200) away from the nut body (100); The second washer (300) and the third washer (400) are meshed and connected.

3. The novel locknut according to claim 2, wherein A plurality of main body connecting teeth (110) are arranged in a surrounding manner on the locking surface; A plurality of first connecting teeth (210) are arranged in a surrounding manner on the side of the first washer (200) close to the nut body (100); The plurality of main body connecting teeth (110) are respectively meshed with the plurality of first connecting teeth (210) one by one.

4. The novel locknut according to claim 2, wherein, A plurality of second connecting teeth (310) are arranged in a surrounding manner on the side of the second washer (300) close to the third washer (400); A plurality of third connecting teeth (410) are arranged in a surrounding manner on the side of the third washer (400) close to the second washer (300); The plurality of second connecting teeth (310) are respectively meshed with the plurality of third connecting teeth (410) one by one.

5. The novel locknut according to claim 2, characterized in that, A plurality of second engaging teeth (320) are arranged in a surrounding manner on the side of the second washer (300) close to the first washer (200), and the plurality of second engaging teeth (320) are respectively abutted against the first washer (200).

6. The novel locknut according to claim 2 or 5, characterized in that A plurality of third engaging teeth (420) are arranged in a surrounding manner on the side of the third washer (400) away from the second washer (300), and the plurality of third engaging teeth (420) are respectively abutted against the component to be locked.

7. The novel locknut according to claim 2, characterized in that, An internal thread (130) is arranged in the nut body (100); The root of the internal thread (130) is a wedge-shaped structure, so that the inclination angle of the root of the internal thread (130) is greater than the inclination angle of the tip of the internal thread (130).

8. The novel locknut according to claim 7, characterized in that, The included angle range between the root of the internal thread (130) and the extension line of the tip of the internal thread (130) is 5 degrees to 15 degrees.

9. The novel locknut according to claim 7, characterized in that, A central ring (120) is arranged along the axial direction of the nut body (100) in the middle of the locking surface of the nut body (100); The first washer (200), the second washer (300) and the third washer (400) are sequentially sleeved on the outer ring surface of the central ring (120).

10. The novel locknut according to claim 9, characterized in that, The internal thread (130) extends and is arranged on the inner ring surface of the central ring (120).

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