Lock nut using gasket for limiting

Abstract

The utility model relates to the technical field of fasteners, and provides a locknut using a gasket for limiting. The nut is in threaded connection with the bolt; the bolt is sleeved with the gasket body, the gasket body is located on one side of the nut and provided with a first clamping part, the elastic strip is arranged on one side of the gasket body, the nut and / or the elastic strip are / is provided with a second clamping part, and the first clamping part is connected with the second clamping part in a clamped mode. By means of the technical scheme, the problems that in the prior art, under long-term vibration or complex working conditions, an existing locknut can still be loosened, actual requirements cannot be completely met, nut loosening cannot be completely and effectively prevented, and serious safety accidents can be possibly caused are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of fasteners, and in particular to a locking nut which is limited by a gasket. Background Art

[0002] In railways and other fields that require extremely high fastening stability, loosening of nuts may cause serious safety accidents. Existing anti-loosening nuts may still loosen under long-term vibration or complex working conditions, which cannot fully meet actual needs and cannot completely and effectively prevent nuts from loosening, which may cause serious safety accidents. Utility Model Content

[0003] The utility model proposes an anti-loosening nut which uses a gasket for limiting the position, which solves the problem that the existing anti-loosening nuts in the related technology may still become loose under long-term vibration or complex working conditions, cannot fully meet actual needs, cannot completely and effectively prevent the nut from loosening, and may cause serious safety accidents.

[0004] The technical solution of the utility model is as follows: a locking nut which is limited by a gasket, comprising:

[0005] bolt;

[0006] a nut, the nut being threadedly connected to the bolt;

[0007] A pad body, the pad body is sleeved on the bolt and located on one side of the nut, the pad body has a first clamping portion,

[0008] The elastic bar is arranged on one side of the pad body, the nut and / or the elastic bar has a second clamping portion, and the first clamping portion is clamped with the second clamping portion.

[0009] Optionally, the nut has a plurality of circumferentially arranged second clamping portions.

[0010] Optionally, the pad body has a plurality of circumferentially arranged first clamping portions, the first clamping portions are oblique tooth-shaped protrusions, and the second clamping portion of the nut is an oblique tooth-shaped groove.

[0011] Optionally, the pad body is a flat pad or a spring pad.

[0012] Optionally, the pad body is a spring pad and is in a ring shape with a notch, and both ends of the spring pad have the first clamping portion.

[0013] Optionally, the first clamping portions at both ends of the spring washer are arranged obliquely relative to the spring washer.

[0014] Optionally, both the nut and the spring bar have the second clamping portion, and the first clamping portions at two ends of the spring washer face opposite directions and are respectively clamped with the second clamping portion of the nut and the second clamping portion of the spring bar.

[0015] Optionally, the elastic bar is replaced by a gasket, and the gasket has circumferentially arranged second clamping parts.

[0016] Optionally, the first clamping portions at both ends of the spring washer face the same direction and are both clamped with the second clamping portion of the spring bar.

[0017] Optionally, the second clamping portion of the elastic bar is cylindrical, and the first clamping portion of the pad body is a cylindrical groove.

[0018] The working principle and beneficial effects of the utility model are:

[0019] In the utility model, the first clamping part of the flat pad is a cylindrical groove, which is arranged on the lower side of the flat pad. The shape and size of the cylindrical groove should be accurately designed according to the actual specifications of the spring bar to achieve a tight limit fit. The size and shape of the cylindrical groove can just be limited with the spring bar on the railway track, effectively preventing the flat pad from rotating during use. High-strength metal materials are selected to manufacture the anti-loosening flat pad to ensure that it can withstand various stresses in railway operation. The upper surface of the flat washer has several first clamping parts arranged circumferentially, and the lower surface of the nut has several second clamping parts arranged circumferentially. The nut is also made of high-strength metal material to ensure its structural strength and durability. In order to enhance the firmness and self-locking property of the clamping connection, the first clamping part and the second clamping part are respectively designed as oblique tooth-shaped protrusions and oblique tooth-shaped grooves. The surface area of ​​the contact between the first clamping part and the second clamping part is increased in a uniformly distributed manner. Moreover, through the inclination angle of the oblique teeth, when subjected to external force, a component force along the axial direction of the bolt can be generated. This component force counteracts the rotation tendency of the nut and enhances the anti-loosening effect. Preferably, the number of the second clamping parts on the lower surface of the nut and the first clamping parts on the flat washer surface are both more than three. When one of the second clamping parts or one of the first clamping parts fails, the other second clamping parts and the first clamping parts can still play an anti-loosening role, thereby greatly improving the anti-loosening performance and service life of the nut.

[0020] In the past, railway nuts were easy to loosen under long-term vibration and impact, but this embodiment greatly improved the anti-loosening effect through the limit matching of the anti-loosening flat washer and the elastic bar and the design of the second clamping part on the nut surface, reduced the risk of nut loosening, and ensured the safety and stability of railway operation. Traditional nuts require frequent maintenance and tightening, which increases manpower and material costs. The reliable anti-loosening design of this embodiment reduces the occurrence of nut loosening, thereby extending the maintenance cycle and reducing the maintenance cost of railway operation. The anti-loosening nut and flat washer in this embodiment have lower wear and damage under the same use conditions, thereby effectively improving the overall service life. The cylindrical groove design of the anti-loosening flat washer can be accurately limited with elastic bars of various specifications, so that the invention can play a good anti-loosening role in different railway track environments and has a wider adaptability. By reducing track failures and maintenance costs caused by loose nuts and extending the replacement cycle of parts, it brings significant economic benefits to railway operations. The reliable anti-loosening performance effectively avoids safety hazards such as track connection failure caused by loose nuts, and provides a strong guarantee for the safe operation of the railway. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The preferred implementation modes will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present utility model.

[0022] Figure 1 This is a schematic diagram of the structure of the utility model (the pad body has no gap);

[0023] Figure 2 This is a schematic diagram of the structure of the utility model (an annular pad body with a notch, and the first clamping parts at both ends of the pad body face opposite directions);

[0024] Figure 3 It is a schematic diagram of the structure of the utility model (the elastic bar is replaced by a gasket, and the gasket has a second clamping portion arranged circumferentially);

[0025] Figure 4 This is a schematic diagram of the structure of the utility model (the annular pad body with a notch and the first clamping parts at both ends of the pad body face the same direction);

[0026] Figure 5 This is a schematic diagram of the nut structure of the utility model;

[0027] Figure 6 It is a structural schematic diagram of one side of the nut washer body of the utility model.

[0028] In the figure: 1, bolt; 2, nut; 3, gasket; 301, first clamping part; 301-1, end face clamping part; 301-2, notch clamping part; 301-3, groove clamping part; 4, spring bar; 5, second clamping part; 5-1, nut clamping part; 5-2, spring bar clamping part; 5-3, gasket clamping part; 6, notch; 7, columnar; 8, columnar groove; 9, gasket. DETAILED DESCRIPTION

[0029] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the specific implementation methods of the utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0030] In order to simplify the drawings, only the parts related to the utility model are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically shown, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0031] In this article, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0032] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0033] Example 1

[0034] Reference Figure 1 , Figure 5 and Figure 6, which is the first embodiment of the utility model, proposes a locking nut 2 that is limited by a gasket 9, comprising: a bolt 1; a nut 2 threadedly connected to the bolt 1; a gasket body 3 sleeved on the bolt 1, located on one side of the nut 2, the gasket body 3 having a first clamping portion 301, an elastic bar 4 arranged on one side of the gasket body 3, the nut 2 and the elastic bar 4 having a second clamping portion 5, the first clamping portion 301 being clamped with the second clamping portion 5. The nut 2 has a plurality of circumferentially arranged second clamping portions 5, and the gasket body 3 has a plurality of circumferentially arranged first clamping portions 301. The first clamping portion 301 is an oblique tooth-shaped protrusion, and the second clamping portion 5 of the nut 2 is an oblique tooth-shaped groove. The gasket body 3 is a flat gasket, the second clamping portion 5 of the elastic bar 4 is a columnar 7, and the first clamping portion 301 of the gasket body 3 is a columnar groove 8.

[0035] In this embodiment, for the sake of convenience, the second clamping portion 5 of the nut 2 is called the nut clamping portion 5-1, the second clamping portion 5 of the spring bar 4 is called the spring bar clamping portion 5-2, the first clamping portion 301 clamped with the nut clamping portion 5-1 is called the end face clamping portion 301-1, and the first clamping portion 301 (column groove 8) clamped with the spring bar clamping portion 5-2 is called the groove clamping portion 301-3. Except for this embodiment, the following embodiments also use the above-mentioned names. The nut 2 and the spring bar 4 both have the second clamping portion 5, the first clamping portion 301 is clamped with the nut clamping portion 5-1 and the spring bar clamping portion 5-2 at the same time, and the groove clamping portion 301-3 is arranged on the lower side of the flat washer. Preferably, the depth of the cylindrical groove 8 is greater than 0.5 mm, and the shape and size of the cylindrical groove 8 should be precisely designed according to the actual specifications of the spring bar 4 to achieve a tight limit fit. The size and shape of the cylindrical groove 8 can just be limited with the spring bar 4 on the railway track, effectively preventing the flat washer from rotating during use. High-strength metal materials are used to manufacture anti-loosening flat washers to ensure that they can withstand various stresses in railway operation. The upper surface of the flat washers has a number of circumferentially arranged end face clamps 301-1, and the lower surface of the nut 2 has a number of circumferentially arranged nut clamps 5-1. The nut 2 is also made of high-strength metal materials to ensure its structural strength and durability. In order to enhance the firmness and self-locking properties of the clamping, the end face clamps 301-1 and the nut clamps 5-1 are respectively designed as oblique tooth-shaped protrusions and oblique tooth-shaped grooves, which are evenly distributed to increase the contact surface area between the end face clamps 301-1 and the nut clamps 5-1. Through the inclination angle of the helical teeth, when subjected to external force, a component force along the axial direction of the bolt 1 can be generated. This component force counteracts the rotation tendency of the nut 2 and enhances the anti-loosening effect. Preferably, the number of nut clamping parts 5-1 and end face clamping parts 301-1 is more than three. When one of the nut clamping parts 5-1 or one of the end face clamping parts 301-1 fails, the other nut clamping parts 5-1 and end face clamping parts 301-1 can still play an anti-loosening role, thereby greatly improving the anti-loosening performance and service life of the nut 2.

[0036] The previous railway nut 2 is easy to loosen under long-term vibration and impact, while the present embodiment greatly improves the anti-loosening effect through the limit matching of the anti-loosening flat washer and the elastic bar 4 and the design of the nut clamp 5-1, reduces the risk of the nut 2 loosening, and ensures the safety and stability of railway operation. The traditional nut 2 requires frequent maintenance and tightening, which increases the manpower and material costs. The reliable anti-loosening design of the present embodiment reduces the occurrence of nut 2 loosening, thereby extending the maintenance cycle and reducing the maintenance cost of railway operation. The anti-loosening nut 2 and the flat washer in the present embodiment have lower wear and damage under the same use conditions, thereby effectively improving the overall service life. The cylindrical groove 8 design of the anti-loosening flat washer can be accurately limited with elastic bars 4 of various specifications, so that the invention can play a good anti-loosening role in different railway track environments and has a wider adaptability. By reducing the track failure and maintenance costs caused by the loosening of the nut 2, and extending the replacement cycle of parts, it brings significant economic benefits to the railway operation. The reliable anti-loosening performance effectively avoids the safety hazards such as track connection failure caused by the loosening of the nut 2, and provides a strong guarantee for the safe operation of the railway.

[0037] Example 2

[0038] Reference Figure 2 and Figure 5 , which is the second embodiment of the utility model. This embodiment is different from the first embodiment in that the pad body 3 is a spring washer and is annular with a notch 6. Both ends of the spring washer have a first clamping portion 301. The first clamping portions 301 at both ends of the spring washer are inclined relative to the spring washer. The nut 2 and the spring bar 4 both have a second clamping portion 5 (the nut clamping portion 5-1 and the spring bar clamping portion 5-2). The first clamping portions 301 at both ends of the notch 6 of the spring washer face oppositely and are clamped with the second clamping portion 5 of the nut 2 and the second clamping portion 5 of the spring bar 4, respectively.

[0039] Compared with Example 1, this embodiment further includes a nut 2, a spring washer and an elastic bar 4. For the convenience of understanding and description, the first clamping parts 301 on both sides of the notch 6 are called notch clamping parts 301-2. During installation, the first clamping part 301 of the spring washer is aligned with the nut clamping part 5-1, and then the nut 2 and the spring washer are installed on the upper side of the elastic bar 4, so that the two notch clamping parts 301-2 are respectively embedded in the nut clamping part 5-1 and the elastic bar clamping part 5-2 to achieve limiting and prevent loosening.

[0040] First of all, the anti-loosening performance has been greatly improved. Through the cooperation between the notch clamping part 301-2 and the nut clamping part 5-1 and the double limit of the spring clip clamping part 5-2, the ability of the nut 2 to resist the influence of harsh environments such as vibration is greatly enhanced, and the nut 2 can be more effectively prevented from loosening, which significantly reduces the risk of safety accidents caused by the loosening of the nut 2. Secondly, the structural design is simple and clear. Compared with some complex anti-loosening structures, the structure of the present invention is easy to understand and manufacture, which not only reduces the production cost, but also is conducive to large-scale application and promotion in actual production. Furthermore, the installation process is convenient. Without complicated operating steps and special tools, the installation can be completed quickly, saving installation time and labor costs, and improving work efficiency. In summary, the present invention has obvious advantages in anti-loosening effect, structural complexity and installation convenience, and can better meet the high requirements for the anti-loosening performance of the nut 2 in the fields of railways and the like.

[0041] Specifically, firstly, carefully select the nut 2, spring washer and spring bar 4 with high manufacturing precision and good material. The nut clamping part 5-1 and the notch clamping part 301-2 should be precisely matched in size to ensure the limiting effect.

[0042] Before the actual installation operation, clean and inspect the bolt 1 to be tightened to ensure that the surface of the bolt 1 is free of damage, rust and debris. Place the spring washer accurately on the spring bar 4, and the notch clamp 301-2 should be accurately and stably limited with the spring bar clamp 5-2. During the placement process, pay attention to keeping the spring washer level and stable to avoid tilting or offset. Then, slowly screw the nut 2 on the bolt 1. During the screwing process, carefully observe whether the nut clamp 5-1 and the notch clamp 301-2 correspond accurately. If any deviation is found, adjust it in time to ensure that the two are perfectly aligned. After the installation is completed, conduct a comprehensive inspection. Check whether the installation position of the nut 2, spring washer and spring bar 4 is correct, and whether the connection between the components is tight and firm. At the same time, use professional testing tools to test the tightness of the nut 2 to ensure that the specified tightening standard is met. During the operation of the equipment, regularly inspect the nut 2. Check for signs of looseness, deformation or damage. If any problems are found, repair or replace them in time to ensure the long-term stable operation of the equipment.

[0043] Example 3

[0044] refer to Figure 3 and Figure 5 , which is the third embodiment of the utility model. This embodiment is different from the second embodiment in that: the elastic bar 4 is replaced by a gasket 9, and the gasket 9 has a second clamping portion 5 arranged circumferentially.

[0045] Compared with Example 2, the gasket 9 is manufactured by a stamping process, and the gasket 9 with a second clamping portion 5 is used to replace the spring bar 4. Here, for the convenience of understanding and description, the second clamping portion 5 of the gasket 9 is referred to as the gasket clamping portion 5-3, which can further enhance the static stability of the system. Compared with the spring bar 4, it can resist long-term vibration and external impact more durable, ensure the stability and durability of the clamping part, and reduce the risk of performance degradation caused by fatigue of the elastic element. The replacement of the spring bar 4 with the gasket 9 simplifies the overall design, reduces the moving parts, and thus reduces the manufacturing cost and assembly complexity. Without the elastic variable, the production and processing are simpler, and the potential maintenance requirements and costs are also reduced. The use of the gasket 9 simplifies the installation process, and there is no need to consider the preload setting of the spring bar 4, which reduces the human error during installation and improves the installation efficiency. Especially in an environment with large temperature changes, the gasket 9 may show better environmental adaptability and durability than the spring bar 4 containing elastic material, and reduces the impact of environmental factors on the anti-loosening performance. During the maintenance stage, there is no need to regularly check the elastic state of the spring bar 4, which reduces the complexity of the maintenance work. The design of the gasket clamping part 5-3 makes it easier to adapt to nuts 2 of different specifications, enhancing the versatility and interchangeability of the anti-loosening solution in different application scenarios, making it easier for users to select and replace according to actual needs, making the anti-loosening device more suitable for application scenarios with high standards and high stability requirements.

[0046] Example 4

[0047] refer to Figure 4 and Figure 5 , which is the fourth embodiment of the utility model. This embodiment is different from the first embodiment in that the pad body 3 is a spring pad, and is a ring with a notch 6, and both ends of the spring pad have a first clamping portion 301. The first clamping portions 301 at both ends of the spring pad face the same direction and are both clamped with the second clamping portion 5 of the elastic bar 4.

[0048] Compared with Example 1, further, the pad body 3 is a spring pad, and a notch 6 is provided on one side. A first clamping portion 301 is provided on the edge of the notch 6. The upper end face of the spring pad is provided with a circumferentially arranged first clamping portion 301 (end face clamping portion 301-1). The first clamping portion 301 (notch clamping portion 301-2) on the edge of the notch 6 is used to clamp with the second clamping portion 5 of the elastic bar 4 to achieve limiting, thereby preventing relative rotation between the pad body 3 and the elastic bar 4, providing new ideas and methods for the development of the anti-loosening nut 2 technology, and helping to promote technological innovation and progress in the field of connection and fastening in the entire industry.

[0049] Specifically, prepare the nut 2, gasket 9 and spring bar 4, and ensure that the size and accuracy of each component meet the design requirements, place the gasket 3 on the bolt 1 to be tightened, make the notch clamping part 301-2 face the installation direction of the spring bar 4, screw the nut 2 on the bolt 1, ensure that the end face clamping part 301-1 and the nut clamping part 5-1 are accurately engaged, install the spring bar 4, and make the spring bar clamping part 5-2 and the notch clamping part 301-2 limit each other. It can adapt to bolts 1 of different specifications and sizes to meet the application needs of various industries and fields. There is no need to develop special anti-loosening nuts 2 for different bolt 1 specifications, which reduces the inventory cost and management difficulty of the enterprise. Due to the enhanced reliability of the tightening effect of the nut 2, the frequent inspection and adjustment due to the loosening of the nut 2 is reduced, and the working efficiency and production efficiency of the equipment are improved.

[0050] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A locking nut using a gasket for positioning, characterized in that: include: Bolt (1); A nut (2), wherein the nut (2) is threadedly connected to the bolt (1); A pad body (3), the pad body (3) is sleeved on the bolt (1) and is located on one side of the nut (2), and the pad body (3) has a first clamping portion (301); An elastic bar (4), the elastic bar (4) being arranged on one side of the pad body (3), the nut (2) and / or the elastic bar (4) having a second clamping portion (5), the first clamping portion (301) being clamped with the second clamping portion (5).

2. The anti-loosening nut using a gasket for position limiting according to claim 1, characterized in that: The pad body (3) is a flat pad or a spring pad.

3. The anti-loosening nut using a gasket for position limiting according to claim 2, characterized in that: The nut (2) is provided with a plurality of second clamping portions (5) arranged circumferentially.

4. The anti-loosening nut using a gasket for position limiting according to claim 3, characterized in that: The pad body (3) has a plurality of first clamping portions (301) arranged circumferentially, the first clamping portions (301) are oblique tooth-shaped protrusions, and the second clamping portion (5) of the nut (2) is an oblique tooth-shaped groove.

5. A locking nut using a gasket for position limiting according to claim 3 or 4, characterized in that: The pad body (3) is a spring pad and is in the shape of a ring with a notch (6), and both ends of the spring pad are provided with the first clamping portion (301).

6. The anti-loosening nut using a gasket for position limiting according to claim 5, characterized in that: The first clamping parts (301) at both ends of the spring washer are arranged obliquely relative to the spring washer.

7. The anti-loosening nut using a gasket for position limiting according to claim 6, characterized in that: The nut (2) and the spring bar (4) both have the second clamping portion (5), and the first clamping portions (301) at both ends of the spring washer face opposite directions and are respectively clamped with the second clamping portion (5) of the nut (2) and the second clamping portion (5) of the spring bar (4).

8. The anti-loosening nut using a gasket for position limiting according to claim 7, characterized in that: The elastic bar (4) is replaced by a gasket (9), and the gasket (9) has a second clamping portion (5).

9. The anti-loosening nut using a gasket for position limiting according to claim 5, characterized in that: The first clamping parts (301) at both ends of the spring washer face the same direction and are both clamped with the second clamping parts (5) of the spring bar (4).

10. The anti-loosening nut using a gasket for position limiting according to claim 4, characterized in that: The second clamping portion (5) of the elastic bar (4) is columnar (7), and the first clamping portion (301) of the pad body (3) is a columnar groove (8).

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