Anti-falling nut device suitable for vibration working condition place

Abstract

The utility model discloses an anti-drop nut device suitable for vibration working condition places, which comprises a hexagon nut, a threaded groove is fixedly arranged on the inner wall of the hexagon nut, a spring washer is arranged in the threaded groove, an elastic sheet is fixedly connected to the surface of the inner wall of the bottom of the hexagon nut, and the inner wall of the bottom of the hexagon nut is fixedly connected with the spring washer. A cap pad is integrally arranged on the outer edge of the bottom of the hexagon nut. A plurality of elastic pieces are designed and arranged on the inner wall of the hexagon nut, one end of each elastic piece is firmly and fixedly connected with the inner wall of the hexagon nut body, the other end of each elastic piece is kept to be a free end, and in order to ensure the performance of the hexagon nut, the free ends of the elastic pieces can be in a slightly bent state in an unstressed normal state; when the hexagon nut is screwed and fixed on the bolt, the free end of the elastic piece can be in close contact with the thread tooth side face of the bolt, so that certain friction force is generated, and the friction force can effectively prevent the nut from loosening in the using process.

Description

Technical Field

[0001] This utility model relates to the field of anti-loosening technology for mechanical parts, specifically an anti-loosening nut device suitable for vibrating working conditions. Background Technology

[0002] In many industrial production scenarios, such as mining machinery, construction machinery, and engines, the working environment is often accompanied by strong vibrations. Under such vibration conditions, traditional nut connection structures are prone to loosening or even falling off. Loosening or falling off of nuts may lead to displacement of parts, equipment failure, and in severe cases, even safety accidents, causing personal injury and property damage.

[0003] Currently, common anti-loosening measures include using spring washers, cotter pins, and applying threadlocking compound. However, the elasticity of spring washers gradually weakens under long-term strong vibration, reducing their anti-loosening effect. Cotter pins are relatively complex to install and difficult to use in some space-constrained areas. Although applying threadlocking compound has a good anti-loosening effect, it is difficult to disassemble and is not suitable for occasions that require frequent disassembly and maintenance.

[0004] Therefore, those skilled in the art have provided an anti-loosening nut device suitable for vibration-prone environments to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this invention is to provide an anti-loosening nut device suitable for vibrating working conditions, so as to solve the problem mentioned in the background art that the existing nut devices are easy to loosen and not easy to disassemble.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A nut-proof device suitable for vibration-prone environments includes: a hexagonal nut, wherein a threaded groove is fixedly provided on the inner wall of the hexagonal nut, and a spring washer is provided inside the threaded groove; an elastic sheet is fixedly connected to the bottom inner wall surface of the hexagonal nut; and a cap washer is integrally provided on the bottom outer edge of the hexagonal nut.

[0008] As a further improvement of this utility model: the threaded groove and the spring washer are fitted together, and the upper end of the spring washer is fixedly connected to the upper inner wall of the threaded groove.

[0009] As a further embodiment of this utility model: one end of the elastic sheet is fixedly connected to the inner wall of the hexagonal nut, and the end of the elastic sheet away from the inner wall of the hexagonal nut is bent towards the center line of the hexagonal nut.

[0010] As a further improvement of this utility model, the elastic sheet is distributed in a ring about the symmetrical center line of the hexagonal nut.

[0011] As a further improvement of this utility model: a collar is fitted on the outer side of the hexagonal nut, and a lever is integrally connected to the surface of the collar.

[0012] As a further improvement of this utility model, an anti-abrasion pad is fixedly adhered to the bottom of the cap pad.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. The hexagonal nut has threaded grooves on its inner wall. Spring washers are further installed inside these grooves. These spring washers are designed to be smaller than the threaded grooves to ensure proper insertion. Specifically, one end of the spring washer is firmly fixed to the upper end of the threaded groove, while the other end remains free. When the threaded groove rotates and engages with the threads on the bolt, the threads gradually push into the groove. During this process, the advancement of the threads pushes the spring washer located inside the threaded groove. Due to the elastic properties of the spring washer, it is forced to press tightly against the thread. The spring washer, along with the inner wall of the threaded groove, makes frictional contact with the threaded teeth. This design utilizes the elastic force of the spring washer to make the thread engagement between the threaded groove and the threaded teeth tighter. This structure is particularly effective under vibration conditions because it can avoid the constant and repeated fine friction between the threaded groove and the threaded teeth. Long-term friction is one of the main causes of thread loosening. By using the spring washer, an elastic structure can be established, which significantly reduces the hard friction between the threaded teeth and the threaded groove, thereby greatly improving the anti-loosening effect without affecting the disassembly of the hexagonal nut.

[0015] 2. Several elastic plates are designed and installed on the inner wall of the hexagonal nut. These elastic plates are evenly distributed in a ring along the axial direction of the inner wall of the nut body. One end of each elastic plate is firmly fixed to the inner wall of the hexagonal nut body, while the other end remains free. To ensure its performance, the elastic plates are usually made of highly elastic metal materials, such as spring steel, or high-quality elastic plastics. In the normal unloaded state, the free end of the elastic plate will exhibit a slight bending state. When the hexagonal nut is tightened and fixed to the bolt, the free end of the elastic plate will make close contact with the thread side of the bolt, thereby generating a certain frictional force. This frictional force can effectively prevent the nut from loosening during use, ensuring the stability and safety of the connection. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a nut-preventing device suitable for use in vibrating environments.

[0017] Figure 2 This is a cross-sectional structural diagram of an anti-loosening nut device suitable for vibration-prone environments.

[0018] Figure 3 This is a schematic diagram of the bottom structure of the cap pad in an anti-loosening nut device suitable for vibrating working conditions.

[0019] Figure 4 For a type of anti-loosening nut device suitable for vibrating working conditions Figure 3 Enlarged schematic diagram of part A in the middle.

[0020] Figure 5 This is a schematic diagram of the elastic sheet in an anti-loosening nut device suitable for vibration-prone environments.

[0021] In the diagram: 1. Hex nut; 2. Cap washer; 3. Collar; 4. Lever; 5. Threaded groove; 6. Spring washer; 7. Anti-wear pad; 8. Elastic sheet. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-5 This utility model provides an anti-loosening nut device suitable for vibrating working conditions, including: a hexagonal nut 1, a collar 3 sleeved on the outer side of the hexagonal nut 1, and a lever 4 integrally connected to the surface of the collar 3, an anti-wear pad 7 fixedly bonded to the bottom of the cap pad 2, and a cap pad 2 integrally provided on the bottom outer edge of the hexagonal nut 1.

[0024] Specifically, a collar 3 is provided on the outside of the hexagonal nut 1. The internal hole structure of the collar 3 is perfectly matched with the hexagonal structure of the hexagonal nut 1. This design allows the collar 3 to be tightly engaged with the hexagonal nut 1, thus facilitating the connection between the collar 3 and the hexagonal nut 1. In addition, a lever 4 is integrated into the surface of the collar 3. The presence of the lever 4 facilitates the user to apply external force. By using the lever 4 to turn the hexagonal nut 1, the user can easily achieve the tightening operation between the hexagonal nut 1 and the bolt. In order to increase the contact area between the nut and the mechanical parts, the cap washer 2 not only improves the stability of the connection, but also effectively prevents wear problems caused by insufficient contact area. At the same time, in order to further improve wear resistance and anti-slip properties, the anti-wear pad 7 ensures safety and reliability during use.

[0025] The inner wall of the hexagonal nut 1 is fixedly provided with a threaded groove 5, and a spring washer 6 is provided inside the threaded groove 5. The threaded groove 5 and the spring washer 6 are interlocking, and the upper end of the spring washer 6 is fixedly connected to the upper end of the inner wall of the threaded groove 5.

[0026] Specifically, the spring washer 6 is designed to be smaller than the threaded groove 5, so that the spring washer 6 can be perfectly embedded inside the threaded groove 5. At both ends of the spring washer 6, one end is fixed and the other end is free. When the hexagonal nut 1 is tightened on the bolt, the threads on the bolt will penetrate into the threaded groove 5. During this process, the threads will squeeze the spring washer 6, making it fit tightly against the inner wall of the threaded groove 5. Due to the elastic properties of the spring washer 6, it will be forced to fit tightly against the inner wall of the threaded groove 5, and together with the threaded groove 5, it will make frictional contact with the thread. This contact method utilizes the elastic force of the spring washer 6, making the fit between the threaded groove 5 and the thread tighter. In addition, the elastic structure of the spring washer 6 can also reduce the hard friction between the thread and the threaded groove 5, thereby significantly improving the anti-loosening effect of the connection.

[0027] An elastic sheet 8 is fixedly connected to the inner wall surface of the bottom of the hexagonal nut 1. One end of the elastic sheet 8 is fixedly connected to the inner wall of the hexagonal nut 1, and the end of the elastic sheet 8 away from the inner wall of the hexagonal nut 1 is bent towards the center line of the hexagonal nut 1. The elastic sheet 8 is distributed in a ring about the symmetrical center line of the hexagonal nut 1.

[0028] Specifically, the elastic plates 8 are evenly distributed around the nut body, ensuring its structural balance. One end of each elastic plate 8 is firmly fixed to the nut body, while the other end is designed as a free end. When these free ends are not under stress, they will exhibit a slight bending arc towards the center of the nut body. When the nut is tightened and fixed to the bolt, the free end of the elastic plate 8 will make close contact with the thread side of the bolt. This contact not only ensures a good fit between the two, but also generates a certain friction during the contact process. It is precisely because of this friction that the nut is effectively prevented from loosening due to vibration or external force during use, thereby ensuring the stability and reliability of the connection.

[0029] The working principle of this utility model is as follows:

[0030] When using this utility model, the bolt is passed through the pre-drilled hole in the component to be connected, and then the hexagonal nut 1 is screwed onto the other end of the bolt. As the hexagonal nut 1 is screwed on, the threads on the bolt gradually penetrate into the threaded groove 5 opened on the inner wall of the hexagonal nut 1. During this process, the threads compress the spring washer 6, causing it to deform and fit tightly against the inner wall of the threaded groove 5. At the same time, the elastic plates 8 are evenly distributed around the circumference of the nut body. One end of each elastic plate 8 is fixedly connected to the hexagonal nut 1, while the other end of the elastic plate 8 is a free end. These free ends are not... Under stress, the nut will exhibit a slight bending arc towards the center of the nut body. When the nut is tightened and fixed to the bolt, the free end of the elastic plate 8 will also make close contact with the thread side of the bolt, generating friction. When the hexagonal nut 1 is fully tightened, the collar 3 and lever 4 fitted on the outside of the hexagonal nut 1 can be used to further fix and tighten the nut, preventing it from loosening due to vibration or external force during use. The setting of the cap washer 2 and anti-wear washer 7 increases the contact area between the nut and the mechanical parts, improving the stability and anti-wear properties of the connection.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A device for preventing nut loosening in vibrating environments, characterized in that, include: A hexagonal nut (1) has a threaded groove (5) fixedly opened on its inner wall, and a spring washer (6) is provided inside the threaded groove (5). An elastic sheet (8) is fixedly connected to the bottom inner wall surface of the hexagonal nut (1), and a cap washer (2) is integrally provided on the bottom outer edge of the hexagonal nut (1).

2. The anti-loosening nut device suitable for vibration-prone environments according to claim 1, characterized in that, The threaded groove (5) and the spring washer (6) are fitted together, and the upper end of the spring washer (6) is fixedly connected to the upper inner wall of the threaded groove (5).

3. The anti-loosening nut device suitable for vibration-prone environments according to claim 1, characterized in that, One end of the elastic sheet (8) is fixedly connected to the inner wall of the hexagonal nut (1), and the end of the elastic sheet (8) away from the inner wall of the hexagonal nut (1) is bent toward the center line of the hexagonal nut (1).

4. The anti-loosening nut device suitable for vibration-prone environments according to claim 3, characterized in that, The elastic sheet (8) is arranged in a ring about the symmetrical center line of the hexagonal nut (1).

5. The anti-loosening nut device suitable for vibration-prone environments according to claim 1, characterized in that, The hexagonal nut (1) is fitted with a collar (3) on its outer side, and a lever (4) is integrally connected to the surface of the collar (3).

6. The anti-loosening nut device suitable for vibration-prone environments according to claim 1, characterized in that, The bottom of the cap pad (2) is fixedly bonded with an anti-abrasion pad (7).

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