Anti-loose bolt assembly

Abstract

The utility model provides a kind of anti-loose bolt assembly, it includes limiting structure, it includes reset spring, the top and bottom of reset spring are provided with push rod, the both sides of push rod are rotatably connected with rotating bar, limiting strip is arranged between two rotating bars, the top and bottom of the inner side of limiting strip are provided with cross bar, the cross bar is rotatably connected with rotating bar.The utility model design is reasonable, by the limiting structure that can be placed in bolt assembly structure inside, the limiting strip inside limiting structure respectively will be placed in the recess of bolt body, gasket body and the recess between nut body inside, mutually engage, after fixed, gasket body and nut body can mutually engage between, avoid gasket body and nut body because of vibration and separate bolt body, improve its stability in use process.

Description

Technical Field

[0001] This utility model mainly relates to the field of bolt assemblies, specifically to an anti-loosening bolt assembly. Background Technology

[0002] Bolted connections, as one of the most basic and widely used connection methods in the mechanical field, are directly related to the safe and stable operation of the entire equipment or structure. However, traditional bolted connections are generally prone to loosening under harsh working conditions such as long-term vibration, impact, variable loads, or drastic temperature changes. This loosening leads to a decrease in preload, which in turn causes relative displacement between the connected parts, abnormal noise, wear, and may even cause connection failure, resulting in serious safety accidents and equipment malfunctions.

[0003] During the operation of specific embodiments, the inventors discovered the following defects:

[0004] For example, spring washers, double nuts, and self-locking nuts can be used. The principle is to resist loosening by increasing the friction between the threaded parts or the supporting surfaces. However, the anti-loosening effect of these methods gradually diminishes under continuous and intense vibration. Spring washers may lose their elasticity after repeated vibrations, while double nuts increase weight and installation space, and have specific requirements for the tightening torque of the two nuts, making them less manufacturable.

[0005] It should be noted that the above content falls within the scope of the inventor's technical knowledge. Due to the vast and complex nature of the technical content in this field, the above content of this application does not necessarily constitute prior art. Utility Model Content

[0006] 1. The technical problem to be solved by the utility model:

[0007] This utility model provides an anti-loosening bolt assembly to solve the technical problems existing in the background art.

[0008] 2. Technical Solution:

[0009] To achieve the above objectives, the technical solution provided by this utility model is: an anti-loosening bolt assembly, comprising a bolt assembly structure, wherein a limit structure is provided inside the bolt assembly structure;

[0010] The limiting structure includes a return spring, a push rod at the top and bottom of the return spring, a rotating bar rotatably connected to both sides of the push rod, a limiting bar between the two rotating bars, and a crossbar at the top and bottom of the inner side of the limiting bar, the crossbar being rotatably connected to the rotating bar.

[0011] Furthermore, the bolt assembly structure includes a hexagonal cap, a washer body, and a nut body, with the bolt body located at the bottom of the hexagonal cap and a first limiting cone located at the bottom of the hexagonal cap.

[0012] Furthermore, the bolt body has an installation groove inside, and the installation groove has a placement groove inside, with the number of placement grooves being multiple.

[0013] Furthermore, the gasket body is slidably connected to the outer wall of the bolt body, and a second limiting cone is provided on the top of the gasket body.

[0014] Furthermore, the nut body is threaded to the outer wall of the bolt body, and an anti-slip strip is provided on the top of the nut body.

[0015] Furthermore, the inner walls of the gasket body and the nut body are provided with square grooves, and the inner wall of the grooves is engaged with the outer wall of the limiting strip.

[0016] 3. Beneficial effects:

[0017] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0018] This utility model uses a limiting structure that can be placed inside the bolt assembly structure. The limiting strip inside the limiting structure respectively engages the placement groove inside the bolt body, the groove inside the washer body, and the groove inside the nut body. This allows the washer body and the nut body to engage with each other after being fixed, preventing the washer body and the nut body from detaching from the bolt body due to vibration and improving its stability during use. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a three-dimensional cross-sectional view of the bolt assembly structure of this utility model;

[0021] Figure 3 This is a three-dimensional structural diagram of the limiting structure of this utility model.

[0022] Figure label:

[0023] 1. Bolt assembly structure; 101. Hexagonal cap; 102. Bolt body; 103. First limiting cone; 104. Mounting groove; 105. Placement groove; 106. Washer body; 107. Second limiting cone; 108. Nut body; 109. Anti-slip strip; 2. Limiting structure; 201. Return spring; 202. Push rod; 203. Rotating bar; 204. Crossbar; 205. Limiting strip. Detailed Implementation

[0024] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the 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 the utility model will be more thorough and complete.

[0025] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," "fixed," "provided with," and "located in" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. Example

[0028] See attached document Figure 1-3 An anti-loosening bolt assembly includes a bolt assembly structure 1, wherein a limit structure 2 is provided inside the bolt assembly structure 1;

[0029] The limiting structure 2 includes a return spring 201. Push rods 202 are provided at the top and bottom of the return spring 201. Rotating bars 203 are rotatably connected to both sides of the push rods 202. A limiting bar 205 is provided between the two rotating bars 203. A crossbar 204 is provided at the top and bottom of the inner side of the limiting bar 205. The crossbar 204 is rotatably connected to the rotating bars 203. The push rod 202 is then placed into the mounting groove 104, causing the return spring 201 to reset and push the push rod 202 upwards. The push rod 202 drives the rotating bars 203 to rotate, and the rotating bars 203 push the limiting bar 205 outwards. Then, the limiting bar 205 enters the inner wall of the square groove on the inner side of the placement groove 105, the washer body 106, and the nut body 108 and engages, thus limiting the position of the nut body 108 and fixing its position again, thereby achieving an anti-loosening effect.

[0030] Furthermore, the bolt assembly structure 1 includes a hexagonal cap 101, a washer body 106, and a nut body 108. A bolt body 102 is located at the bottom of the hexagonal cap 101, and a first limiting cone 103 is located at the bottom of the hexagonal cap 101. An installation groove 104 is formed inside the bolt body 102, and a placement groove 105 is formed inside the installation groove 104. Multiple placement grooves 105 are provided. The washer body 106 is slidably connected to the outer wall of the bolt body 102, and a second limiting cone 107 is located at the top of the washer body 106. The nut body 108 is threadedly connected to the outer wall of the bolt body 102, and an anti-slip strip 109 is located at the top of the nut body 108. Square grooves are formed on the inner walls of the washer body 106 and the nut body 108. The inner wall of the groove is connected to... The outer wall of the limiting strip 205 is engaged. When the equipment needs to be fixed by the bolt assembly, the bolt body 102 is inserted into the bolt hole, and then the washer body 106 and the nut body 108 are installed on the outer wall of the bolt body 102 in sequence. Then, the hexagonal cap 101 is fixed by one wrench, and the nut body 108 is rotated by another wrench. Then the nut body 108 moves upward on the outer wall of the bolt body 102, so that the nut body 108 drives the washer body 106 to fit against the outer wall of the equipment. Then the first limiting cone 103 and the second limiting cone 107 contact the outer wall of the equipment. The first limiting cone 103 and the second limiting cone 107 can leave small indentations on the surface of the equipment, so that the indentations fit against the second limiting cone 107 and the first limiting cone 103, thereby maintaining its stability during vibration.

[0031] I. Installation Preparation

[0032] Component composition:

[0033] Bolt assembly structure 1 includes a hexagonal cap 101, a bolt body 102, a first limiting cone 103, a mounting groove 104, a placement groove 105, a washer body 106, a second limiting cone 107, a nut body 108, and an anti-slip strip 109.

[0034] Limiting structure 2 includes a return spring 201, a push rod 202, a rotating bar 203, a crossbar 204, and a limiting bar 205.

[0035] Initial state:

[0036] The limiting structure 2 is pre-installed in the mounting groove 104 of the bolt body 102, or the limiting structure 2 can be placed after the washer body 106 and the nut body 108 are installed.

[0037] The washer body 106 and the nut body 108 are respectively fitted onto the bolt body 102, but have not yet been tightened.

[0038] II. Installation Process

[0039] Insert bolt:

[0040] Insert the bolt body 102 into the hole of the component to be connected.

[0041] Install washers and nuts:

[0042] Place the washer body 106 and the nut body 108 onto the bolt body 102 in sequence.

[0043] Tighten the nuts:

[0044] Use one wrench to hold the hexagonal cap 101 in place, and use another wrench to rotate the nut body 108.

[0045] The nut moves upward, pushing the washer body 106 to fit against the surface of the connector.

[0046] The first limiting cone 103 and the second limiting cone 107 are pressed into the surface of the connector to form a dent, thereby enhancing the anti-rotation capability.

[0047] III. Limiting Structure 2 Start

[0048] Return spring 201 pushes:

[0049] Push the limiting structure 2 downwards to align the limiting structure 2 with the gasket body 106 and the nut body 108;

[0050] The return spring 201 pushes the upper and lower push rods 202 to move outward.

[0051] Rotating bar 203 action:

[0052] Push rod 202 pushes rotating bar 203 to rotate around crossbar 204.

[0053] Limiting strip 205 card combination:

[0054] Rotating bar 203 pushes limiting bar 205 outward to engage with each other:

[0055] The placement groove 105 of the bolt body 102;

[0056] A square groove on the inner side of the gasket body 106;

[0057] The square groove on the inner side of the nut body 108;

[0058] Forming a mechanical interlock:

[0059] The limiting strip 205 forms a mechanical engagement with the grooves of the three components to prevent the nut and washer from rotating or loosening due to vibration.

[0060] IV. Anti-loosening effect

[0061] Multiple anti-loosening mechanisms are achieved through the combined action of mechanical interlocking, conical limiters, and anti-slip strip 109.

[0062] Even in high-vibration environments, it can maintain preload and prevent connection failure.

[0063] The above-described embodiments are merely illustrative of certain implementations of this utility model, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An anti-loosening bolt assembly, characterized in that: include Bolt assembly structure (1), wherein a limit structure (2) is provided inside the bolt assembly structure (1); The limiting structure (2) includes a return spring (201), a push rod (202) is provided at the top and bottom of the return spring (201), a rotating bar (203) is rotatably connected to both sides of the push rod (202), a limiting bar (205) is provided between the two rotating bars (203), and a crossbar (204) is provided at the top and bottom of the inner side of the limiting bar (205), and the crossbar (204) is rotatably connected to the rotating bar (203).

2. The anti-loosening bolt assembly according to claim 1, characterized in that: The bolt assembly structure (1) includes a hexagonal cap (101), a washer body (106) and a nut body (108). The bottom of the hexagonal cap (101) is provided with a bolt body (102) and a first limiting cone (103) is provided at the bottom of the hexagonal cap (101).

3. The anti-loosening bolt assembly according to claim 2, characterized in that: The bolt body (102) has an installation groove (104) inside, and the installation groove (104) has a placement groove (105) inside, and the number of placement grooves (105) is set to multiple.

4. The anti-loosening bolt assembly according to claim 2, characterized in that: The gasket body (106) is slidably connected to the outer wall of the bolt body (102), and a second limiting cone (107) is provided on the top of the gasket body (106).

5. The anti-loosening bolt assembly according to claim 2, characterized in that: The nut body (108) is threaded to the outer wall of the bolt body (102), and an anti-slip strip (109) is provided on the top of the nut body (108).

6. The anti-loosening bolt assembly according to claim 2, characterized in that: The inner walls of the gasket body (106) and the nut body (108) are provided with square grooves, and the inner wall of the grooves is engaged with the outer wall of the limiting strip (205).

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