Anti-loosening combined type nut fastening structure

Abstract

The utility model belongs to the technical field of fastening structures, and provides an anti-loosening combined type nut fastening structure which comprises a first fastening plate, a second fastening plate is arranged below the first fastening plate, the first fastening plate and the second fastening plate are provided with first grooves, bolt columns are arranged in the first grooves, and the first fastening plate and the second fastening plate are provided with second grooves. And one end of the bolt column is fixedly connected with a bolt head. According to the utility model, the friction force between the first gasket and the bolt head is increased by the first gasket through the first sawtooth pattern on the first gasket, and the friction force between the second gasket and the first fastening plate is increased by the second gasket through the fourth sawtooth pattern on the second gasket, so that the displacement of the structure in the horizontal direction in the operation vibration process is weakened; the first gasket is meshed with the third sawtooth pattern on the second gasket through the second sawtooth pattern on the first gasket, the displacement of the structure in the vertical direction in the operation vibration process is weakened, the situation that the structure is prone to loosening in the vibration environment is reduced, and the high-strength and anti-loosening requirements are met.

Description

Technical Field

[0001] The utility model relates to the field of fastening structures, and particularly to an anti-loosening composite nut fastening structure. Background Art

[0002] As a standard part widely used in the field of mechanical manufacturing, nuts are widely used in industries such as industry, agriculture, electric power, bridges, construction, transportation, aviation, aerospace, ships, and national defense industries. For many key load-bearing structure connection parts in these fields, the safety requirements for fastening connections are extremely high. In a usage environment with various frequencies of vibration, traditional nuts are prone to loosening due to vibration, which may lead to a decrease in mechanical performance and malfunctions in the lightest case, and may even cause damage to equipment or personnel and result in serious accidents in the severest case. Therefore, the requirements for the anti-loosening ability of nuts are increasing day by day. Traditional nuts are prone to loosening in a vibration environment and cannot meet the high-strength and anti-loosening requirements. Therefore, an anti-loosening composite nut fastening structure is proposed. Content of the Utility Model

[0003] The purpose of the utility model is to solve the defects existing in the prior art, and an anti-loosening composite nut fastening structure is proposed.

[0004] To achieve the above purpose, the utility model adopts the following technical scheme: an anti-loosening composite nut fastening structure, including a first fastening plate, a second fastening plate is arranged below the first fastening plate, the first fastening plate and the second fastening plate are provided with a first groove, a bolt column is arranged in the first groove, one end of the bolt column is fixedly connected with a bolt head, a second groove is arranged at the end of the bolt column far from the bolt head, the bolt column is threadedly connected with a first gasket through, one side of the first gasket is provided with a first serrated pattern, the side of the first gasket far from the first serrated pattern is provided with a second serrated pattern, the bolt column is threadedly connected with a second gasket through, one side of the second gasket is provided with a third serrated pattern, and the side of the second gasket far from the third serrated pattern is provided with a fourth serrated pattern.

[0005] As a further description of the above technical solution:

[0006] A sleeve rod is fixedly connected to the side of the second fastening plate far from the first fastening plate, the end of the bolt column far from the bolt head is threadedly connected into the sleeve rod, a third groove is arranged in the sleeve rod, a fixing block is fixedly connected in the third groove, a limiting block is arranged around the fixing block, a fourth groove is arranged in the sleeve rod, the limiting block is fixedly connected in the fourth groove, a clamping rod is fixedly connected to the fixing block, and a clamping block is fixedly connected to the end of the clamping rod far from the fixing block.

[0007] As a further description of the above technical solution:

[0008] A fixing rod is fixedly connected inside the second groove. A fixing rod is provided inside the sleeve rod, and the fixing rod is located inside the fifth groove.

[0009] As a further description of the above technical solution:

[0010] The diameter of the bolt column is smaller than the diameter of the first groove, and the second serrated pattern meshes with the third serrated pattern.

[0011] As a further description of the above technical solution:

[0012] The tooth density of the first serrated pattern is greater than that of the second serrated pattern, and the tooth density of the fourth serrated pattern is greater than that of the third serrated pattern.

[0013] As a further description of the above technical solution:

[0014] Four groups of limit blocks are provided, and the four groups of limit blocks are evenly distributed on the fixed block. Four groups of clamping rods are provided, and the four groups of clamping rods are evenly distributed on one side of the fixed block.

[0015] As a further description of the above technical solution:

[0016] The fixing rod is located between the four groups of clamping blocks and between the four groups of clamping rods.

[0017] Adopting the above structure, the present utility model has the following advantages:

[0018] 1. In the present utility model, the first gasket increases the friction force between the first gasket and the bolt head through the first serrated pattern on the first gasket, and the second gasket increases the friction force between the second gasket and the first fastening plate through the fourth serrated pattern on the second gasket, weakening the displacement in the horizontal direction during the operation and vibration of the structure. The first gasket meshes with the third serrated pattern on the second gasket through the second serrated pattern on the first gasket, weakening the displacement in the vertical direction during the operation and vibration of the structure, reducing the condition that the structure is prone to looseness in the vibration environment, and meeting the requirements of high strength and anti-loosening.

[0019] 2. In the present utility model, by rotating the bolt column, the bolt column moves downward inside the sleeve rod. By the downward movement of the bolt column, the second groove on the bolt column presses down the clamping block, causing the clamping block to tighten. By the tightening of the clamping block, the clamping rod tightens, clamping the fixing rod, further strengthening the fastening of the structure, ensuring the mechanical performance level of the equipment, and protecting the equipment or personnel from damage. Description of the Drawings

[0020] Figure 1 It is a three-dimensional structure diagram of a loosening-proof composite nut fastening structure proposed by the present utility model;

[0021] Figure 2Partial structure explosion diagram of a loosening-proof composite nut fastening structure proposed by the present utility model Figure 1 ;

[0022] Figure 3 Partial structure explosion diagram of a loosening-proof composite nut fastening structure proposed by the present utility model Figure 2 ;

[0023] Figure 4 Partial structure sectional view of a loosening-proof composite nut fastening structure proposed by the present utility model Figure 1 ;

[0024] Figure 5 Partial structure sectional view of a loosening-proof composite nut fastening structure proposed by the present utility model Figure 2 。

[0025] Legend:

[0026] 1. First fastening plate; 2. Second fastening plate; 3. First groove; 4. Bolt head; 5. Bolt column; 6. Second groove; 7. First gasket; 8. First serrated pattern; 9. Second serrated pattern; 10. Second gasket; 11. Third serrated pattern; 12. Fourth serrated pattern; 13. Sleeve rod; 14. Third groove; 15. Fourth groove; 16. Fixed block; 17. Limiting block; 18. Clamping block; 19. Clamping rod; 20. Fixed rod; 21. Fifth groove. Specific embodiments

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0028] Refer to Figures 1-5, an embodiment provided by the present utility model: an anti-loosening composite nut fastening structure, which includes a first fastening plate 1. A second fastening plate 2 is provided below the first fastening plate 1. The first fastening plate 1 and the second fastening plate 2 are provided with a first groove 3. A bolt column 5 is provided in the first groove 3. One end of the bolt column 5 is fixedly connected with a bolt head 4. A second groove 6 is provided at the end of the bolt column 5 away from the bolt head 4. The bolt column 5 is threadedly connected through a first gasket 7. One side of the first gasket 7 is provided with a first serrated pattern 8. The side of the first gasket 7 away from the first serrated pattern 8 is provided with a second serrated pattern 9. The bolt column 5 is threadedly connected through a second gasket 10. One side of the second gasket 10 is provided with a third serrated pattern 11. The side of the second gasket 10 away from the third serrated pattern 11 is provided with a fourth serrated pattern 12. The first gasket 7 increases the friction between the first gasket 7 and the bolt head 4 through the first serrated pattern 8 on the first gasket 7. The second gasket 10 increases the friction between the second gasket 10 and the first fastening plate 1 through the fourth serrated pattern 12 on the second gasket 10, weakening the displacement in the horizontal direction during the operation and vibration of the structure. The first gasket 7 meshes with the third serrated pattern 11 on the second gasket 10 through the second serrated pattern 9 on the first gasket 7, weakening the displacement in the vertical direction during the operation and vibration of the structure, reducing the condition that the structure is prone to loosen in a vibrating environment, and meeting the requirements of high strength and anti-loosening.

[0029] A sleeve rod 13 is fixedly connected to the side of the second fastening plate 2 away from the first fastening plate 1. The end of the bolt column 5 away from the bolt head 4 is threadedly connected through the sleeve rod 13. A third groove 14 is provided in the sleeve rod 13. A fixing block 16 is fixedly connected in the third groove 14. A limiting block 17 is provided around the fixing block 16. A fourth groove 15 is provided in the sleeve rod 13. The limiting block 17 is fixedly connected in the fourth groove 15. A clamping rod 19 is fixedly connected to the fixing block 16. One end of the clamping rod 19 away from the fixing block 16 is fixedly connected with a clamping block 18. A fixing rod 20 is fixedly connected in the second groove 6. The fixing rod 20 is provided in the sleeve rod 13. The fixing rod 20 is located in a fifth groove 21. The diameter of the bolt column 5 is smaller than the diameter of the first groove 3. The second serrated pattern 9 meshes with the third serrated pattern 11. The serration density of the first serrated pattern 8 is greater than the serration density of the second serrated pattern 9. The serration density of the fourth serrated pattern 12 is greater than the serration density of the third serrated pattern 11. There are four groups of limiting blocks 17, and the four groups of limiting blocks 17 are evenly distributed on the fixing block 16. There are four groups of clamping rods 19, and the four groups of clamping rods 19 are evenly distributed on one side of the fixing block 16. The fixing rod 20 is located between the four groups of clamping blocks 18. The fixing rod 20 is located between the four groups of clamping rods 19. By rotating the bolt column 5, the bolt column 5 moves downward in the sleeve rod 13. By the downward movement of the bolt column 5, the second groove 6 on the bolt column 5 presses down the clamping block 18, causing the clamping block 18 to tighten. By the tightening of the clamping block 18, the clamping rod 19 is tightened, clamping the fixing rod 20, further strengthening the fastening of the structure, ensuring the mechanical performance level of the equipment, and ensuring that the equipment or personnel are not damaged.

[0030] Working principle: Rotate the bolt head 4 with a wrench to drive the bolt column 5 to screw into the first gasket 7, the second gasket 10, and the sleeve rod 13. At this time, the first gasket 7 increases the friction force between the first gasket 7 and the bolt head 4 through the first serrated pattern 8 on the first gasket 7. The second gasket 10 increases the friction force between the second gasket 10 and the first fastening plate 1 through the fourth serrated pattern 12 on the second gasket 10, weakening the displacement in the horizontal direction during the operation vibration of the structure. The first gasket 7 meshes with the third serrated pattern 11 on the second gasket 10 through the second serrated pattern 9 on the first gasket 7, weakening the displacement in the vertical direction during the operation vibration of the structure, reducing the condition that the structure is prone to loosen in the vibration environment, meeting the requirements of high strength and anti-loosening. Rotate the bolt column 5 to make the bolt column 5 move downward in the sleeve rod 13. Through the downward movement of the bolt column 5, the second groove 6 on the bolt column 5 presses down the clamping block 18, causing the clamping block 18 to tighten. Through the tightening of the clamping block 18, the clamping rod 19 is tightened to clamp the fixing rod 20, further strengthening the fastening of the structure, ensuring the mechanical performance level of the equipment, and protecting the equipment or personnel from damage.

[0031] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. 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 perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A loosening-proof composite nut fastening structure, comprising a first fastening plate (1), characterized in that: A second fastening plate (2) is provided below the first fastening plate (1). The first fastening plate (1) and the second fastening plate (2) are provided with a first groove (3). A bolt column (5) is provided in the first groove (3). One end of the bolt column (5) is fixedly connected to a bolt head (4). A second groove (6) is provided at the end of the bolt column (5) away from the bolt head (4). The bolt column (5) is threadedly connected through a first gasket (7). One side of the first gasket (7) is provided with a first serrated pattern (8). The side of the first gasket (7) away from the first serrated pattern (8) is provided with a second serrated pattern (9). The bolt column (5) is threadedly connected through a second gasket (10). One side of the second gasket (10) is provided with a third serrated pattern (11). The side of the second gasket (10) away from the third serrated pattern (11) is provided with a fourth serrated pattern (12).

2. The anti-loosening composite nut fastening structure according to claim 1, characterized in that: A sleeve rod (13) is fixedly connected to the side of the second fastening plate (2) away from the first fastening plate (1). The end of the bolt column (5) away from the bolt head (4) is threadedly connected through the sleeve rod (13). A third groove (14) is provided in the sleeve rod (13). A fixing block (16) is fixedly connected in the third groove (14). A limiting block (17) is provided around the fixing block (16). A fourth groove (15) is provided in the sleeve rod (13). The limiting block (17) is fixedly connected in the fourth groove (15). A clamping rod (19) is fixedly connected to the fixing block (16). A clamping block (18) is fixedly connected to the end of the clamping rod (19) away from the fixing block (16).

3. The anti-loosening composite nut fastening structure according to claim 2, wherein: A fixing rod (20) is fixedly connected in the second groove (6). A fixing rod (20) is provided in the sleeve rod (13). The fixing rod (20) is located in a fifth groove (21).

4. A loosening prevention composite nut fastening structure according to claim 3, characterized in that: The diameter of the bolt column (5) is smaller than the diameter of the first groove (3). The second serrated pattern (9) meshes with the third serrated pattern (11).

5. The anti-loosening composite nut fastening structure according to claim 4, characterized in that: The serration density of the first serrated pattern (8) is greater than the serration density of the second serrated pattern (9). The serration density of the fourth serrated pattern (12) is greater than the serration density of the third serrated pattern (11).

6. The anti-loosening composite nut fastening structure according to claim 5, characterized in that: There are four groups of the limiting blocks (17). The four groups of the limiting blocks (17) are evenly distributed on the fixing block (16). There are four groups of the clamping rods (19). The four groups of the clamping rods (19) are evenly distributed on one side of the fixing block (16).

7. The anti-loosening composite nut fastening structure according to claim 6, characterized in that: The fixing rod (20) is located between the four groups of the clamping blocks (18). The fixing rod (20) is located between the four groups of the clamping rods (19).

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