Lock bolt structure

Abstract

The utility model discloses a lock bolt structure, and relates to the lock bolt technical field, the lock bolt structure comprises a to-be-fastened piece and a bolt main body, the bolt main body comprises a bolt head, the lower end of the bolt head is provided with a first threaded rod, the outer surface of the first threaded rod is provided with a fastening assembly, the fastening assembly comprises a main body nut and a locking nut, and the main body nut and the locking nut are connected through a connecting rod. The main body nut and the locking thread are both in threaded connection with the outer surface of the first threaded rod, the main body nut is located above the locking nut, the main body nut is in threaded connection with the first threaded rod, and then the locking nut is in threaded connection with the first threaded rod; the first vertical surface at the lower end of the main body nut is in contact with the second vertical surface at the upper end of the locking nut, so that the first vertical surface and the second vertical surface abut against each other at an interval, and when the bolt is vibrated or impacted to move in the loosening direction, the main body nut and the locking nut are blocked by the first fastening piece and the second fastening piece, and the bolt is prevented from being gradually loosened; and accidents are increased.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-loosening bolts, and specifically relates to an anti-loosening bolt structure. Background Art

[0002] A bolt is a common mechanical part, a cylindrical threaded fastener used in conjunction with a nut. It is a type of fastener composed of two parts: a head and a screw rod (a cylinder with external threads). It needs to cooperate with a nut to be used for firmly connecting two parts with through holes.

[0003] During the use of bolts, if the machine or device is often subjected to vibration or impact, the bolts may gradually loosen. The loose bolts may cause instability of related components or the entire equipment, increasing the risk of accidents. Based on this, this solution provides an anti-loosening bolt structure to solve the above-mentioned problems. Content of the Utility Model

[0004] To solve the above technical problems, an anti-loosening bolt structure is provided. This technical solution solves the problem that during the use of bolts as mentioned in the above background art, if the machine or device is often subjected to vibration or impact, the bolts may gradually loosen, and the loose bolts may cause instability of related components or the entire equipment, increasing the risk of accidents.

[0005] To achieve the above purposes, the technical solution adopted by the utility model is: an anti-loosening bolt structure, including a component to be fastened and a bolt main body. The bolt main body includes a bolt head. A first threaded rod is provided at the lower end of the bolt head, and a fastening component is provided on the outer surface of the first threaded rod.

[0006] Among them, the fastening component includes a main body nut and a locking nut. Both the main body nut and the locking nut are threadedly connected to the outer surface of the first threaded rod. The main body nut is located above the locking nut. A first fastener is fixedly installed at the lower end of the main body thread. A number of first vertical surfaces are provided at the lower end of the first fastener. A second fastener is fixedly installed at the upper end of the locking nut. A second vertical surface is provided at the upper end of the second fastener. The first vertical surface and the second vertical surface are clamped with each other.

[0007] Preferably, a first elastic gasket is provided between the bolt head and the component to be fastened, and a second elastic gasket is provided between the main body nut and the component to be fastened.

[0008] Preferably, a number of limiting holes are provided around the upper end of the bolt head, and the first threaded rod penetrates through the upper end of the component to be fastened.

[0009] Preferably, a threaded hole is provided at the upper end of the component to be fastened, and the threaded hole and the limiting hole are in the same vertical direction.

[0010] Preferably, a second threaded rod is provided inside the limit hole, and the second threaded rod is threadedly connected to the inside of the limit hole and the threaded hole.

[0011] Compared with the prior art, the present utility model provides a loosening-proof bolt structure, which has the following beneficial effects:

[0012] Thread the main nut onto the first threaded rod, and then thread the locking nut onto the first threaded rod. The first vertical surface at the lower end of the main nut contacts the second vertical surface at the upper end of the locking nut, so that the first vertical surface and the second vertical surface are spaced apart and in contact. When subjected to vibration or impact and moving in the loosening direction, the main nut and the locking nut are blocked by the first fastener and the second fastener, preventing the bolt from gradually loosening and increasing the occurrence of accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0014] Figure 2 is a three-dimensional structural schematic diagram of the present utility model from another perspective;

[0015] Figure 3 is a structural schematic diagram of the bolt body of the present utility model;

[0016] Figure 4 is a structural schematic diagram of the fastening assembly of the present utility model;

[0017] Figure 5 is a structural schematic diagram of the threaded hole of the present utility model.

[0018] The reference numerals in the drawings are:

[0019] 1. Fastening member to be fastened;

[0020] 2. Bolt body; 201. Bolt head; 202. Limit hole; 203. First threaded rod;

[0021] 3. Second threaded rod;

[0022] 4. Fastening assembly; 401. Main nut; 402. First fastener; 403. First vertical surface; 404. Locking nut; 405. Second fastener; 406. Second vertical surface;

[0023] 5. First elastic gasket; 6. Second elastic gasket; 7. Threaded hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The following description is used to disclose the present utility model so that those skilled in the art can implement the present utility model. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations.

[0025] Refer to Figures 1-5 As shown, a lock - preventing bolt structure includes a fastener - to - be 1 and a bolt body 2. The bolt body 2 includes a bolt head 201. A first threaded rod 203 is provided at the lower end of the bolt head 201. A fastening assembly 4 is provided on the outer surface of the first threaded rod 203. The fastening assembly 4 includes a main nut 401 and a locking nut 404. Both the main nut 401 and the locking nut are thread - connected to the outer surface of the first threaded rod 203. The main nut 401 is located above the locking nut 404. The main nut is used to provide an initial fastening force, while the locking nut is used to ensure that the threaded connection will not loosen due to vibration or load. This double - nut design can improve the safety and reliability of the connection. A first fastener 402 is fixedly installed at the lower end of the main nut. A number of first vertical surfaces 403 are provided at the lower end of the first fastener 402. A second fastener 405 is fixedly installed at the upper end of the locking nut 404. A number of second vertical surfaces 406 are provided at the upper end of the second fastener 405. The relative position between the main nut 401 and the locking nut 404 and the interaction between the first vertical surfaces 403 and the second vertical surfaces 406 are used to ensure the firmness and stability of the connection. The first vertical surfaces 403 and the second vertical surfaces 406 are engaged with each other. The engagement of the first vertical surfaces 403 and the second vertical surfaces 406 can increase the stability and load - bearing capacity of the connection, provide additional surface area and friction, thereby enhancing the fastening force, avoiding bolt loosening, and reducing the risk of accidents.

[0026] Refer to Figures 1-3 As shown, a first elastic gasket 5 is provided between the bolt head 201 and the fastener - to - be 1, and a second elastic gasket 6 is provided between the main nut 401 and the fastener - to - be 1. Using the first elastic gasket 5 and the second elastic gasket 6 can help absorb vibration and compensate for changes in bolt pre - tightening force, thereby reducing the risk of loosening. A number of limiting holes 202 are provided around the upper end of the bolt head 201. The second threaded rod 3 is thread - connected into the threaded hole 7 with the highest alignment. The number of limiting holes corresponds to the threaded holes. The first threaded rod 203 passes through the upper end of the fastener - to - be 1. A threaded hole 7 is provided at the upper end of the fastener - to - be 1. The threaded hole 7 and the limiting holes 202 are in the same vertical direction. A second threaded rod 3 is provided inside the limiting holes 202. The second threaded rod 3 is thread - connected to the inside of the limiting holes 202 and the threaded hole 7.

[0027] Working principle and usage process of the utility model: During use, place the first elastic gasket 5 at the through hole opened at the upper end of the fastener to be fastened 1. The first threaded rod 203 in the bolt body 2 passes through the through hole opened in the fastener to be fastened 1 and the first elastic gasket 5, and is screwed tightly with the fastener to be fastened 1. Thread the second threaded rod 3 into the threaded hole 7 with the highest alignment degree. Slip the second elastic gasket 6 over the outer surface of the first threaded rod 203, and then thread the main body nut 401 onto the surface of the first threaded rod 203 until the second elastic gasket 6 at the upper end of the main body nut 401 abuts against the fastener to be fastened 1. Then thread the locking nut onto the outer surface of the first threaded rod 203 so that the second vertical surface 406 abuts against the first vertical surface 403. When vibration or impact causes it to move in the loosening direction, the main body nut 401 and the locking nut 404 are respectively blocked by the first vertical surface 403 at the lower end of the first fastener 402 and the second vertical surface 406 at the upper end of the second fastener 405, preventing the main body nut 401 from moving in the loosening direction.

[0028] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection claimed by the utility model is defined by the appended claims and their equivalents.

Claims

1. A lock - preventing bolt structure, characterized in that: It comprises a fastener (1) and a bolt body (2), wherein the bolt body (2) comprises a bolt head (201), a first threaded rod (203) is provided at the lower end of the bolt head (201), and a fastening assembly (4) is provided on the outer surface of the first threaded rod (203); The fastening assembly (4) comprises a main nut (401) and a locking nut (404), wherein the main nut (401) and the locking thread are both threadedly connected to the outer surface of the first threaded rod (203), the main nut (401) is located above the locking nut (404), a first fastener (402) is fixedly installed at the lower end of the main nut, a plurality of first vertical surfaces (403) are provided at the lower end of the first fastener (402), a second fastener (405) is fixedly installed at the upper end of the locking nut (404), a second vertical surface (406) is provided at the upper end of the second fastener (405), and the first vertical surface (403) and the second vertical surface (406) are snap-connected.

2. The anti-loosening bolt structure according to claim 1, wherein: A first elastic gasket (5) is provided between the bolt head (201) and the fastener (1), and a second elastic gasket (6) is provided between the main body nut (401) and the fastener (1).

3. The anti-loosening bolt structure according to claim 1, characterized in that: A plurality of limiting holes (202) are provided around the upper end of the bolt head (201), and the first threaded rod (203) passes through the upper end of the fastener (1).

4. The anti-loosening bolt structure according to claim 1, characterized in that: A threaded hole (7) is provided at the upper end of the fastener (1), and the threaded hole (7) and the limiting hole (202) are located in the same vertical direction.

5. A lock - preventing bolt structure according to claim 3, characterized in that: A second threaded rod (3) is provided inside the limiting hole (202), and the second threaded rod (3) is threadedly connected to the inside of the limiting hole (202) and the threaded hole (7).

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