High-strength bolt anti-loosening device

Abstract

The utility model relates to bolt anti-loosening technical field especially is a kind of high-strength bolt anti-loosening device, including bolt, the bolt surface is equipped with connecting sleeve, the connecting sleeve upper end is fixedly arranged with limit disc, the limit disc inboard is fixedly arranged with several elastic metal sheets, the connecting sleeve lower end is fixedly arranged with several deformation metal sheets, by being provided with limit disc on the connecting sleeve upper end, and installing elastic metal sheet in limit disc inboard, and being provided with deformation metal sheet in connecting sleeve lower end, the double locking of movable nut is realized. Movable nut is blocked by elastic metal sheet in the process of being screwed, even if being subjected to vibration or impact, elastic metal sheet can also reset by its elasticity, continue to block the rotation of movable nut, to effectively prevent nut loosening.

Description

Technical Field

[0001] This utility model relates to the field of bolt anti-loosening technology, specifically a high-strength bolt anti-loosening device. Background Technology

[0002] In mechanical engineering and building structures, bolted connections are a widely used fastening method for connecting and securing various components and structures. However, bolted connections often face the problem of loosening during practical use, especially under complex conditions such as vibration, impact, alternating loads, or temperature changes. Loosening of bolts can lead to a decrease in the strength of the connection and even cause structural failure, thus posing a serious threat to the safe operation of equipment and the stability of buildings.

[0003] Traditional anti-loosening measures mainly include the use of spring washers, double nuts, and nylon insert lock nuts. However, these methods have certain limitations. For example, spring washers may lose their elasticity under long-term vibration, double nuts require a large tightening torque and are relatively cumbersome to install, and nylon insert lock nuts may fail under high-temperature environments due to the degradation of the nylon material's properties.

[0004] Furthermore, with the development of modern industrial technology, the operating environment of mechanical equipment is becoming increasingly complex, and the reliability requirements for bolted connections are also becoming higher. In some critical areas, such as aerospace, automobile manufacturing, and heavy machinery, the anti-loosening performance of bolted connections is directly related to the safety and reliability of the equipment. Therefore, a high-strength bolt anti-loosening device is needed to improve the above-mentioned problems. Utility Model Content

[0005] The purpose of this invention is to provide a high-strength bolt anti-loosening device to solve the problems mentioned in the background art.

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

[0007] A high-strength bolt anti-loosening device includes a bolt, a connecting sleeve is fitted on the surface of the bolt, a limiting plate is fixedly provided at the upper end of the connecting sleeve, a plurality of elastic metal plates are fixedly provided inside the limiting plate, and a plurality of deformable metal plates are fixedly provided at the lower end of the connecting sleeve.

[0008] As a preferred embodiment of this utility model, the upper end of the bolt is threaded with a movable nut, and the lower end of the bolt is fixed with a fixed nut.

[0009] As a preferred embodiment of this utility model, the limiting plate is concave, and the inner diameter of the limiting plate is larger than the outer diameter of the movable nut.

[0010] As a preferred embodiment of this utility model, the thickness of the elastic metal sheet is 1mm-3mm, and the material of the elastic metal sheet is stainless steel or spring steel.

[0011] As a preferred embodiment of this utility model, the deformable metal sheet is arc-shaped and made of aluminum alloy or copper alloy.

[0012] As a preferred embodiment of this utility model, both the movable nut and the fixed nut have anti-slip textures on their outer surfaces, and the depth of the anti-slip textures is 0.5mm-1.5mm.

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

[0014] 1. Reliable anti-loosening performance: By setting a limiting plate at the upper end of the connecting sleeve and installing an elastic metal plate inside the limiting plate, and setting a deformable metal plate at the lower end of the connecting sleeve, a double locking of the movable nut is achieved. During the tightening process, the movable nut is blocked by the elastic metal plate. Even if subjected to vibration or impact, the elastic metal plate can return to its original position due to its elasticity, continuously blocking the rotation of the movable nut, thereby effectively preventing the nut from loosening.

[0015] 2. Simple structure and easy installation: The device has a compact structure, mainly composed of bolts, connecting sleeves, limiting plates, elastic metal plates, and deformable metal plates, requiring no complex assembly process. During installation, simply pass the bolts through the mounting holes, put on the connecting sleeves and limiting plates, and tighten the movable and fixed nuts to complete the installation, greatly simplifying the installation process and improving construction efficiency.

[0016] 3. High adaptability: The limiting plate is concave, with an inner diameter larger than the outer diameter of the movable nut, allowing it to accommodate movable nuts of different sizes and providing excellent versatility. Furthermore, this device is suitable for various working conditions, including complex environments such as vibration, impact, alternating loads, and temperature changes, effectively preventing bolts from loosening under these harsh conditions. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0018] Figure 2 This is a top view of the overall structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the overall side view structure of this utility model;

[0020] Figure 4 This is a three-dimensional structural diagram of the overall installation state of this utility model;

[0021] Figure 5This is a schematic diagram of the overall structure of the present invention in its uninstalled state;

[0022] Figure 6 This is a side view of the overall installation state of this utility model.

[0023] In the diagram: 1. Bolt; 2. Movable nut; 3. Elastic metal sheet; 4. Limiting plate; 5. Connecting sleeve; 6. Deformable metal sheet; 7. Fixed nut. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0025] To facilitate understanding of this utility model, a more comprehensive description of it will be provided below with reference to relevant embodiments. Several embodiments of this utility model are given. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0026] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0028] Please see Figure 1-6This utility model provides a technical solution: a high-strength bolt anti-loosening device, including a bolt 1, a connecting sleeve 5 sleeved on the surface of the bolt 1, a limiting plate 4 fixedly mounted on the upper end of the connecting sleeve 5, a plurality of elastic metal pieces 3 fixedly mounted on the inner side of the limiting plate 4, and a plurality of deformable metal pieces 6 fixedly mounted on the lower end of the connecting sleeve 5. The bolt 1 is passed through the installation opening, and then the limiting plate 4 is sleeved on the surface of the bolt 1 through the connecting sleeve 5 and inserted into the installation opening. When the movable nut 2 is tightened, it will squeeze the limiting plate 4, thereby cooperating with the fixed nut 7 to deform the deformable metal pieces 6 inside the installation opening. At the same time, the movable nut 2 entering the limiting plate 4 will be blocked by the elastic metal pieces 3. Although the elastic metal pieces 3 have been crushed by the movable nut 2, they will also return to their original position due to their own elasticity, thereby blocking the edge of the movable nut 2 to prevent rotation.

[0029] As an example of this utility model, the upper end of the bolt 1 is threaded with a movable nut 2, and the lower end of the bolt 1 is fixed with a fixed nut 7. The limiting plate 4 is concave, and the inner diameter of the limiting plate 4 is larger than the outer diameter of the movable nut 2. The thickness of the elastic metal sheet 3 is 1mm-3mm, and the material of the elastic metal sheet 3 is stainless steel or spring steel. The shape of the deformable metal sheet 6 is arc-shaped, and the material of the deformable metal sheet 6 is aluminum alloy or copper alloy. The outer surfaces of the movable nut 2 and the fixed nut 7 are both provided with anti-slip textures, and the depth of the anti-slip textures is 0.5mm-1.5mm.

[0030] Working principle: When in use, the bolt 1 is passed through the mounting hole, and the limiting plate 4 is placed on the surface of the bolt 1 through the connecting sleeve 5 and inserted into the mounting hole. When the movable nut 2 is tightened, it will squeeze the limiting plate 4, thereby cooperating with the fixed nut 7 to deform the deformable metal piece 6 inside the mounting hole. At the same time, the movable nut 2 will be blocked by the elastic metal piece 3 when it enters the limiting plate 4. Although the elastic metal piece 3 has been crushed by the movable nut 2, it will also reset due to its own elasticity, thereby blocking the edge of the movable nut 2 to prevent rotation.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-strength bolt anti-loosening device, comprising a bolt (1), characterized in that: A connecting sleeve (5) is fitted on the surface of the bolt (1). A limiting plate (4) is fixedly provided at the upper end of the connecting sleeve (5). Several elastic metal pieces (3) are fixedly provided inside the limiting plate (4). Several deformable metal pieces (6) are fixedly provided at the lower end of the connecting sleeve (5).

2. The high-strength bolt anti-loosening device according to claim 1, characterized in that: The upper end of the bolt (1) is threaded with a movable nut (2), and the lower end of the bolt (1) is fixed with a fixed nut (7).

3. The high-strength bolt anti-loosening device according to claim 2, characterized in that: The limiting plate (4) is concave, and the inner diameter of the limiting plate (4) is larger than the outer diameter of the movable nut (2).

4. The high-strength bolt anti-loosening device according to claim 2, characterized in that: The thickness of the elastic metal sheet (3) is 1mm-3mm, and the material of the elastic metal sheet (3) is stainless steel or spring steel.

5. A high-strength bolt anti-loosening device according to claim 2, characterized in that: The deformable metal sheet (6) is made of aluminum alloy or copper alloy.

6. The high-strength bolt anti-loosening device according to claim 2, characterized in that: The outer surfaces of both the movable nut (2) and the fixed nut (7) are provided with anti-slip textures, and the depth of the anti-slip textures is 0.5mm-1.5mm.

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