Fatigue resistant bolt fastening device

Abstract

The utility model relates to bolt fastening device technical field provides a kind of fatigue-resistant bolt fastening device, including bolt main body and screw hole;The top of the bolt main body is provided with screw hole, the outer wall of the bolt main body is provided with relaxes and moves structure, the outer wall of the bolt main body is evenly provided with buffer structure.The utility model is provided with relaxes and moves structure, one screw cap and two screw caps are all with bolt main body Threaded connection, and make the convex circle be placed in the inside of recess, further make two groups of screw caps mutually adhere to, and make the structure snap structure, so that it is not easy to produce drop-off phenomenon such as extrusion in the process of vibration, to reach the purpose of improving bolt fastening effect prevents drop-off.

Description

Technical Field

[0001] This utility model relates to the field of bolt fastening device technology, and in particular to a fatigue-resistant bolt fastening device. Background Technology

[0002] With the development of the times, people are using various equipment more and more widely. Since these devices are composed of multiple parts, the use of bolt fastening devices is essential in order to secure them and prevent them from falling off and affecting the overall service life.

[0003] To this end, patent CN201496364U discloses a bolt fastening device, including a bolt (1) and a matching nut (2). The bolt (1) consists of a bolt cap (1.1) and a threaded rod (1.2). The bolt cap (1.1) has at least two radially distributed blind holes (3) on its outer circumference; the nut (2) has at least two radially distributed blind holes (4) on its outer circumference. This bolt fastening device is not prone to wear, deformation, or slippage, and has good anti-theft performance.

[0004] The bolt fastening devices mentioned above may experience loosening of the nuts due to vibrations generated by the equipment itself during use, which in turn affects the bolt fastening effect. Furthermore, the impact caused by vibration may damage the bolts and nuts, affecting the overall service life and making it difficult to meet actual usage requirements. Utility Model Content

[0005] The purpose of this invention is to provide a fatigue-resistant bolt fastening device to solve the defects of existing bolt fastening devices that are not convenient to prevent loosening and falling off, and that have insufficient fatigue resistance.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a fatigue-resistant bolt fastening device, comprising a bolt body and a screw hole;

[0007] The bolt body has a screw hole at its top end, and a loosening structure is provided on the outer wall of the bolt body;

[0008] The loosening structure includes a first nut disposed on the outer wall of the bolt body, a second nut disposed on one side of the first nut, a groove being formed on one side of the first nut, and a protruding ring being fixed on one side of the second nut;

[0009] The outer wall of the bolt body is uniformly provided with a buffer structure.

[0010] Preferably, the screw hole is cross-shaped, and both the No. 1 nut and the No. 2 nut are threadedly connected to the bolt body.

[0011] Preferably, the convex ring is disposed inside the groove, and the convex ring and the first nut form an engaging structure through the groove.

[0012] Preferably, the buffer structure includes grooves evenly formed on the outer wall of the bolt body, and sliding sleeves evenly arranged on the outer wall of the bolt body outside the grooves. A buffer spring is fixed on one side of each sliding sleeve, and a fixing block is fixed on the inner wall of each sliding sleeve.

[0013] Preferably, the grooves are symmetrically distributed on the outer wall of the bolt body, and the fixing blocks are symmetrically distributed on the inner wall of the sleeve.

[0014] Preferably, adjacent sliding sleeves are connected to each other by a buffer spring.

[0015] Preferably, the fixing blocks are all disposed inside the sliding groove, and the sliding sleeve and the bolt body are slidably connected through the fixing blocks and the sliding groove.

[0016] The fatigue-resistant bolt fastening device provided by this utility model has the following advantages:

[0017] By setting a loosening structure, both the No. 1 nut and the No. 2 nut are threadedly connected to the bolt body, and the convex ring is placed inside the groove, so that the two sets of nuts fit together and form a locking structure. During vibration, they are squeezed against each other, making it less likely to fall off, thereby improving the bolt fastening effect and preventing it from falling off.

[0018] By incorporating a buffer structure, two sets of sliding sleeves are interconnected via buffer springs, allowing them to slide from the inner wall to the outer wall of the bolt body via a fixed block. One side of the sliding sleeve abuts against the nut, thus buffering the bolt when the equipment being tightened vibrates, reducing damage caused by collisions, thereby increasing the fatigue resistance of the device. Attached Figure Description

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

[0020] Figure 2 This is a frontal three-dimensional structural diagram of the present invention;

[0021] Figure 3 This is a partial three-dimensional structural schematic diagram of the present invention;

[0022] Figure 4 This is a partial top-view three-dimensional structural schematic diagram of the present invention;

[0023] Figure 5This is a partial frontal three-dimensional structural schematic diagram of the present invention.

[0024] The following are the annotations in the figure: 1. Bolt body; 2. Screw hole; 3. Loosening structure; 301. No. 1 nut; 302. No. 2 nut; 303. Groove; 304. Raised ring; 4. Buffer structure; 401. Slide groove; 402. Slide sleeve; 403. Buffer spring; 404. Fixing block. Detailed Implementation

[0025] 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.

[0026] Please see Figures 1-5 The present invention provides a fatigue-resistant bolt fastening device, comprising a bolt body 1 and a screw hole 2.

[0027] Reference Figures 1-3 As shown, a screw hole 2 is provided at the top of the bolt body 1, and a loosening structure 3 is provided on the outer wall of the bolt body 1. The loosening structure 3 includes a first nut 301 provided on the outer wall of the bolt body 1, a second nut 302 provided on one side of the first nut 301, a groove 303 provided on one side of the first nut 301, and a convex ring 304 fixed on one side of the second nut 302. The screw hole 2 is designed in a cross shape. The first nut 301 and the second nut 302 are both threadedly connected to the bolt body 1. The convex ring 304 is provided inside the groove 303. The convex ring 304 and the first nut 301 form a locking structure through the groove 303.

[0028] When bolts are tightened, vibrations may cause the nuts to vibrate simultaneously, leading to loosening and affecting the tightening effect. To address this, a loosening structure 3 is provided, which allows two sets of nuts to engage with the bolt body 1 to form a threaded connection. A groove 303 is provided on one side of the first nut 301, and a convex ring 304 is fixed to the top of the second nut 302, with the convex ring 304 placed inside the groove 303. This creates a locking structure between the two sets of nuts, making them less prone to loosening during vibrations and preventing the nuts from falling off, thus greatly increasing the practicality of the device.

[0029] Reference Figure 1 , Figure 2 , Figure 4 and Figure 5As shown, a buffer structure 4 is evenly provided on the outer wall of the bolt body 1. The buffer structure 4 includes a sliding groove 401 evenly provided on the outer wall of the bolt body 1. Sliding sleeves 402 are evenly provided on the outer wall of the bolt body 1 outside the sliding groove 401. A buffer spring 403 is fixed on one side of each sliding sleeve 402. A fixing block 404 is fixed on the inner wall of each sliding sleeve 402. The sliding grooves 401 are symmetrically distributed on the outer wall of the bolt body 1, and the fixing blocks 404 are symmetrically distributed on the inner wall of the sliding sleeves 402. Adjacent sliding sleeves 402 are connected to each other by the buffer springs 403. The fixing blocks 404 are all provided inside the sliding grooves 401. The sliding sleeves 402 and the bolt body 1 are slidably connected by the fixing blocks 404 and the sliding grooves 401.

[0030] When tightening bolts, the vibration of the equipment may cause collisions between the nut and the bolt itself, which may affect the service life of the bolt. Therefore, by setting up a buffer structure 4, the sliding sleeve 402 slides on the outer wall of the bolt body 1 inside the sliding groove 401 through the fixing block 404, and a buffer spring 403 is fixed between the two sets of sliding sleeves 402, so that they cooperate with each other and thus play a buffering role during vibration, thereby greatly increasing the practicality of the device.

[0031] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A fatigue-resistant bolt fastening device, comprising a bolt body (1) and a bolt hole (2); Its features are: The bolt body (1) has a screw hole (2) at its top end, and a loosening structure (3) is provided on the outer wall of the bolt body (1). The loosening structure (3) includes a first nut (301) disposed on the outer wall of the bolt body (1), a second nut (302) disposed on one side of the first nut (301), a groove (303) provided on one side of the first nut (301), and a convex ring (304) fixed on one side of the second nut (302). The outer wall of the bolt body (1) is uniformly provided with a buffer structure (4).

2. The fatigue-resistant bolt fastening device according to claim 1, characterized in that: The screw hole (2) is designed in a cross shape, and the first nut (301) and the second nut (302) are threaded to the bolt body (1).

3. The fatigue-resistant bolt fastening device according to claim 1, characterized in that: The convex ring (304) is disposed inside the groove (303), and the convex ring (304) and the first nut (301) form a locking structure through the groove (303).

4. The fatigue-resistant bolt fastening device according to claim 1, characterized in that: The buffer structure (4) includes a groove (401) evenly opened on the outer wall of the bolt body (1), a sliding sleeve (402) evenly arranged on the outer wall of the bolt body (1) outside the groove (401), a buffer spring (403) fixed on one side of the sliding sleeve (402), and a fixing block (404) fixed on the inner wall of the sliding sleeve (402).

5. The fatigue-resistant bolt fastening device according to claim 4, characterized in that: The grooves (401) are symmetrically distributed on the outer wall of the bolt body (1), and the fixing blocks (404) are symmetrically distributed on the inner wall of the sleeve (402).

6. The fatigue-resistant bolt fastening device according to claim 4, characterized in that: The adjacent sliding sleeves (402) are connected to each other by a buffer spring (403).

7. The fatigue-resistant bolt fastening device according to claim 4, characterized in that: The fixing blocks (404) are all located inside the sliding groove (401), and the sliding sleeve (402) and the bolt body (1) are connected by the fixing blocks (404) and the sliding groove (401).

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