Anti-loosening bolt structure

Abstract

The utility model discloses an anti-loosening bolt structure, including a bolt body, the bolt body including a bolt end and a bolt rod, a first anti-loosening member is arranged below the bolt end, the first anti-loosening member includes a first fixing plate, the lower end surface of the first fixing plate is provided with oblique teeth, the upper end surface of the bolt end is downwardly provided with a fixing groove with a T-shaped cross section, a second anti-loosening member is arranged below the first anti-loosening member, the second anti-loosening member includes a second fixing plate, the upper end surface of the second fixing plate is provided with second oblique teeth, and a horizontal positioning groove is also arranged on the bolt rod, an adjustment block is arranged in the positioning groove, a fixing member is arranged in the fixing groove, the fixing member abuts against the adjustment block, and the adjustment block abuts against the second fixing plate. The utility model realizes the limited rotation of the bolt through two groups of anti-loosening members, thereby improving the anti-loosening performance of the bolt after connection; at the same time, the second anti-loosening member increases the contact area with the fastened member, improves the stability of the second anti-loosening member arrangement, and thus indirectly improves the anti-loosening performance of the bolt.

Description

Technical Field

[0001] The utility model relates to the technical field of bolt fasteners, in particular to an anti-loosening bolt structure. Background Art

[0002] Anti-loosening bolts are generally used in mechanical equipment under vibration conditions. The existing utility model with application number 202120902698.1 discloses an anti-loosening bolt, which realizes the relative connection and fixation of the bolt and nut by designing an oblique tooth anti-loosening platform and an anti-loosening nut with a ratchet. However, the connection between the nut and the connected object is a conventional contact form, and the anti-loosening performance of the bolt relative to the connected object is also limited by the friction between the contact surface of the nut and the connected object. The conventional contact form is easily affected by vibration, and there is room for improvement. Utility Model Content

[0003] The utility model aims to provide a bolt structure with stable structure and good anti-loosening effect in view of the deficiencies existing in the above-mentioned background technology.

[0004] In order to achieve the above purpose, the utility model provides an anti-loosening bolt structure, which adopts the following technical solutions:

[0005] The bolt body comprises a bolt end and a bolt rod, wherein a first anti-loosening member is arranged below the bolt end, the first anti-loosening member comprises a first fixing plate, a lower end surface of the first fixing plate is circumferentially provided with continuous oblique teeth, a middle portion of the first fixing plate is provided with a notch for the bolt rod to pass through, the upper end surface of the bolt end is downwardly provided with a fixing groove with a T-shaped cross section, the fixing groove comprises a horizontal portion and a vertical portion, a limiting groove is penetrated from the bottom of the groove of the horizontal portion downwardly, a limiting rod is arranged in the limiting groove, a slot for the limiting rod to be inserted is arranged on the upper end surface of the first fixing plate, a second anti-loosening member is arranged below the first anti-loosening member, the second anti-loosening member comprises a second fixing plate, the upper end surface of the second fixing plate is provided with second oblique teeth matching the oblique teeth, a second notch is arranged in the middle of the second fixing plate, a horizontal positioning groove is also provided on the bolt rod, an adjusting block is arranged in the positioning groove, a fixing member is arranged in the fixing groove, the fixing member abuts against the adjusting block, and the adjusting block abuts against the second fixing plate.

[0006] A further improvement of the anti-loosening bolt structure of the utility model is that the positioning groove is concave, an extension plate is provided at the second notch, the extension plate is inclined downward, the extension plate extends into the concave, and the adjustment block abuts against the extension plate.

[0007] A further improvement of the anti-loosening bolt structure of the utility model is that the second fixing plate comprises a left plate and a right plate which are spliced ​​together, and the extension plate is divided into left and right parts which are respectively formed integrally with the left plate and the right plate.

[0008] A further improvement of the anti-loosening bolt structure of the utility model is that a thread is provided on the vertical portion of the fixing groove, the fixing piece is a bolt threadedly connected to the fixing groove, and the lower end surface of the end of the fixing piece abuts against the limiting rod.

[0009] A further improvement of the anti-loosening bolt structure of the utility model is that eight groups of limiting grooves, slots and limiting rods are arranged evenly in the circumferential direction.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] The utility model realizes the limited rotation of the bolt through two groups of anti-loosening parts, thereby improving the anti-loosening performance of the bolt after connection; at the same time, the second anti-loosening part increases the contact area with the fastened part, improves the stability of the layout of the second anti-loosening part, and indirectly improves the anti-loosening performance of the bolt. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 It is a structural schematic diagram of the fixing groove of the utility model;

[0014] Figure 3 It is a schematic diagram of the cross-sectional structure of the second anti-loosening member of the utility model.

[0015] In the figure: 1 bolt end, 2 bolt rod, 3 second fixing plate, 4 second oblique teeth, 5 first fixing plate, 6 oblique teeth, 7 horizontal part, 8 vertical part, 9 limit groove, 10 positioning groove, 11 extension plate, 12 slot. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] like Figures 1 to 3As shown, a bolt structure for preventing loosening includes a bolt body, the bolt body includes a bolt end 1 and a bolt rod 2, a first anti-loosening member is arranged below the bolt end, the first anti-loosening member includes a first fixing plate 5, the lower end surface of the first fixing plate is circumferentially provided with continuous oblique teeth 6, a notch is provided in the middle of the first fixing plate for the bolt rod to pass through, a fixing groove with a T-shaped cross-section is provided downwardly in the middle of the upper end surface of the bolt end, the fixing groove includes a horizontal portion 7 and a vertical portion 8, a limiting groove 9 is provided from the bottom of the groove of the horizontal portion downwardly, a limiting rod is provided in the limiting groove, a slot 12 is provided on the upper end surface of the first fixing plate for the limiting rod to be inserted, a second anti-loosening member is provided below the first anti-loosening member, the second anti-loosening member includes a second fixing plate 3, the upper end surface of the second fixing plate is provided with second oblique teeth 4 matching the oblique teeth, a second notch is provided in the middle of the second fixing plate, a horizontal positioning groove 10 is also provided on the bolt rod, an adjusting block is provided in the positioning groove, a fixing member is arranged in the fixing groove, the fixing member abuts against the adjusting block, and the adjusting block abuts against the second fixing plate.

[0018] Furthermore, the positioning groove is concave, and an extension plate 11 is provided at the second notch. The extension plate is tilted downward, and the extension plate extends into the concave, and the adjustment block abuts against the extension plate. The extension plate increases the contact area with the fastened object, and then the adjustment block abuts against it, further improving the stability between the second fixing plate and the fastened object, thereby improving the anti-loosening performance of the bolt. The distance from the concave to the end of the bolt is equivalent to the sum of the thicknesses of the two fixing plates, and a small error is allowed.

[0019] Furthermore, the second fixing plate 3 includes a left plate and a right plate connected to each other, and the extension plate is divided into two parts, which are respectively formed integrally with the left plate and the right plate, so as to facilitate the layout and installation of the second fixing plate.

[0020] Furthermore, a thread is provided on the vertical portion 8 of the fixing groove, and the fixing member is a bolt threadedly connected to the fixing groove, and the lower end surface of the end of the fixing member abuts against the limiting rod.

[0021] There are eight groups of limit grooves, slots and limit rods, which are evenly arranged in the circumferential direction, so as to facilitate adjustment and realize the limit stability between the end of the bolt and the first fixing plate.

[0022] The working principle of the utility model is as follows: the bolt rod is passed through the first fixing plate, and then the object to be fastened is screwed together. When the first fixing plate is close to the object to be fastened, the second fixing plate is arranged, and the second fixing plates are spliced. When the second fixing plate is arranged, the extension plate should be extended into the concave part of the bolt rod, and then the first fixing plate is adapted to the second fixing plate, and then the bolt end is adjusted so that the bolt connection to the object to be fastened is in place. At this time, the limiting rod is inserted and adjusted so that the limiting rod is inserted into the slot. Finally, the fixing piece is arranged in the fixing groove so that the adjustment block is against the extension plate. At this time, the extension plate is against the object to be fastened, thereby increasing the contact area with the object to be fastened. The fixing piece also is against the limiting rod, thereby ensuring the limited connection between the bolt and the first fixing plate. On the whole, the bolt has a limiting structure with respect to the object to be fastened, thereby preventing reverse rotation and ensuring anti-loosening performance.

[0023] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. An anti-loosening bolt structure, characterized in that: The bolt body comprises a bolt body, the bolt body comprises a bolt end and a bolt rod, a first anti-loosening member is arranged below the bolt end, the first anti-loosening member comprises a first fixing plate, a lower end surface of the first fixing plate is circumferentially provided with continuous oblique teeth, a notch is arranged in the middle of the first fixing plate for the bolt rod to pass through, the upper end surface of the bolt end is downwardly provided with a fixing groove with a T-shaped cross-section, the fixing groove comprises a horizontal portion and a vertical portion, a limiting groove is penetrated from the bottom of the groove of the horizontal portion downwardly, a limiting rod is arranged in the limiting groove, a slot is arranged on the upper end surface of the first fixing plate for the limiting rod to be inserted, a second anti-loosening member is arranged below the first anti-loosening member, the second anti-loosening member comprises a second fixing plate, the upper end surface of the second fixing plate is provided with second oblique teeth matching the oblique teeth, a second notch is arranged in the middle of the second fixing plate, a horizontal positioning groove is also provided on the bolt rod, an adjusting block is arranged in the positioning groove, a fixing member is arranged in the fixing groove, the fixing member abuts against the adjusting block, and the adjusting block abuts against the second fixing plate.

2. The anti-loosening bolt structure according to claim 1, characterized in that: The positioning groove is concave, and an extension plate is provided at the second notch. The extension plate is inclined downward and extends into the concave portion, and the adjustment block abuts against the extension plate.

3. The anti-loosening bolt structure according to claim 2, characterized in that: The second fixing plate includes a left plate and a right plate that are spliced ​​together, and the extension plate is divided into a left part and a right part, which are respectively integrally formed with the left plate and the right plate.

4. The anti-loosening bolt structure according to claim 3, characterized in that: A thread is provided on the vertical portion of the fixing groove, the fixing piece is a bolt threadedly connected to the fixing groove, and the lower end surface of the end of the fixing piece abuts against the limiting rod.

5. The anti-loosening bolt structure according to claim 4, characterized in that: The limiting grooves, slots and limiting rods are provided in eight groups and are evenly distributed in the circumferential direction.

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