Anti-loose impeller nut

Abstract

The utility model discloses an anti-loose impeller nut which comprises a screw head, a first stud is arranged on one side of the screw head, a second stud is arranged on the top of the first stud, a first thread is arranged on the first stud, and a second thread is arranged on the second stud. After equipment is fixed by a first nut, a second nut is screwed on a second stud, when a first limiting groove is aligned with a second limiting groove, an adjusting plate is pressed, a spring is compressed, a sliding column is located in a storage groove, a first limiting rod is rotated, when a second limiting rod falls into the second limiting groove, and when the sliding column is aligned with a sliding groove, the adjusting plate is loosened, and the spring is reset; the sliding column falls into the sliding groove, the bolt is fixed, the screwing-in directions of the first thread and the second thread are opposite, the second nut and the first nut which are connected through the limiting mechanism cannot rotate under mutual balance, and therefore the effect of preventing the nuts from loosening is achieved.

Description

Technical Field

[0001] This utility model relates to the field of fastener technology, and in particular to an anti-loosening impeller nut. Background Technology

[0002] The impeller is the core working component of centrifugal machinery (such as pumps, compressors, fans, and centrifuges). Its structural composition directly affects energy conversion efficiency and equipment reliability, and the tightness of the connection between the impeller and the centrifugal machinery directly affects its working efficiency.

[0003] Impellers are usually directly fixed to the equipment via nuts. Traditional nuts are nut bodies with internal threaded holes, and they rely entirely on the threads to tighten for fastening. As the equipment vibrates during operation, nuts and bolts may loosen. Loose nuts that fasten workpieces often cause physical malfunctions in some equipment, making the equipment unable to work properly or even causing safety accidents. Utility Model Content

[0004] The purpose of this utility model is to provide an anti-loosening impeller nut in order to solve the above-mentioned problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An anti-loosening impeller nut includes a screw head, a first stud on one side of the screw head, a second stud on the top of the first stud, a first thread on the first stud, a second thread on the second stud, the first thread and the second thread having opposite threading directions, a first nut fitted on the first stud, a second nut fitted on the second stud, and a limit mechanism between the first nut and the second nut to prevent the first nut from loosening.

[0007] Preferably, the limiting mechanism includes a first limiting rod and a second limiting rod, a first limiting groove is provided on the side of the second nut, the first limiting rod is rotatably connected to the first limiting groove through a first rotating shaft, a distance adjustment component is provided between the first limiting rod and the second limiting rod, a second limiting groove is provided on the side of the first nut, and a limiting component is provided between the second limiting rod and the second limiting groove.

[0008] Preferably, the distance adjustment assembly includes a first transmission cylinder disposed at the bottom of the first limiting rod, a second transmission cylinder disposed at the top of the second limiting rod, a transmission rod disposed between the first transmission cylinder and the second transmission cylinder, and a turntable disposed at the middle of the transmission rod.

[0009] Preferably, the first transmission cylinder has a third threaded groove inside, the second transmission cylinder has a fourth threaded groove inside, one end of the transmission rod has a third thread adapted to the third threaded groove, and the other end of the transmission rod has a fourth thread adapted to the fourth threaded groove. The third thread and the fourth thread have opposite threading directions.

[0010] Preferably, the limiting component includes a sliding groove formed inside the second limiting groove, a storage groove formed at the bottom of the second limiting rod, a limiting seat formed inside the storage groove, a first sliding rod formed on the side of the limiting seat, a sliding column adapted to the sliding groove slidably connected to the first sliding rod, and a spring formed between the sliding column and the limiting seat.

[0011] Preferably, an adjusting seat is provided on the bottom side of the second limiting rod, a second sliding rod is provided on the side of the adjusting seat, an adjusting plate is provided on the side of the sliding rod, and the adjusting plate and the second sliding rod are slidably connected.

[0012] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0013] After the first nut secures the equipment, the second nut is screwed onto the second stud. When the first and second limiting grooves are aligned, the adjusting plate is pressed down, the spring is compressed, and the sliding column is positioned in the storage slot. The first limiting rod is rotated, and when the second limiting rod falls into the second limiting groove, and the sliding column is aligned with the slide groove, the adjusting plate is released, the spring returns to its original position, and the sliding column falls into the slide groove, completing the bolt fixing. Because the first and second threads are screwed in opposite directions, the second nut and the first nut connected by the limiting mechanism cannot rotate under mutual restraint, thus preventing the nuts from loosening and reducing the probability of accidents. Attached Figure Description

[0014] Figure 1 A schematic diagram of the impeller nut structure provided according to an embodiment of the present invention is shown;

[0015] Figure 2 A schematic diagram of a screw head structure according to an embodiment of the present invention is shown;

[0016] Figure 3 A schematic diagram of the cross-sectional structure of the screw head according to an embodiment of the present invention is shown;

[0017] Figure 4 An exploded view of the limiting mechanism provided according to an embodiment of the present invention is shown;

[0018] Figure 5 A schematic diagram of the limiting component structure provided according to an embodiment of the present utility model is shown.

[0019] Legend:

[0020] 1. Screw head; 2. First stud; 3. Second stud; 4. First thread; 5. Second thread; 6. First nut; 7. Second nut; 8. First limiting groove; 9. First rotating shaft; 10. Second limiting groove; 11. Slide groove; 12. First limiting rod; 13. Second limiting rod; 14. First transmission cylinder; 15. Second transmission cylinder; 16. Third thread groove; 17. Fourth thread groove; 18. Transmission rod; 19. Turntable; 20. Third thread; 21. Fourth thread; 22. Storage slot; 23. Limiting seat; 24. First slide rod; 25. Spring; 26. Slide column; 27. Adjusting plate; 28. Adjusting seat; 29. ​​Second slide rod. Detailed Implementation

[0021] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-5 This utility model provides a technical solution:

[0023] An anti-loosening impeller nut includes a screw head 1, a first stud 2 on one side of the screw head 1, a second stud 3 on the top of the first stud 2, a first thread 4 on the first stud 2, and a second thread 5 on the second stud 3. The first thread 4 and the second thread 5 are screwed in opposite directions. A first nut 6 is fitted onto the first stud 2, and a second nut 7 is fitted onto the second stud 3. A limiting mechanism is provided between the first nut 6 and the second nut 7 to prevent the first nut 6 from loosening. Because the first thread 4 and the second thread 5 are screwed in opposite directions, the second nut 7 and the first nut 6, connected by the limiting mechanism, cannot rotate under mutual restraint, thus preventing the nuts from loosening.

[0024] Specifically, such as Figure 3 , Figure 4 and Figure 5As shown, the limiting mechanism includes a first limiting rod 12 and a second limiting rod 13. A first limiting groove 8 is provided on the side of the second nut 7. The first limiting rod 12 is rotatably connected to the first limiting groove 8 through a first rotating shaft 9. A distance adjustment component is provided between the first limiting rod 12 and the second limiting rod 13. A second limiting groove 10 is provided on the side of the first nut 6. A limiting component is provided between the second limiting rod 13 and the second limiting groove 10. The first limiting groove 8 and the second limiting groove 10 correspond one-to-one, and the number can be set according to needs. The setting of the distance adjustment component can expand the scope of application of this application and improve its practicality.

[0025] Specifically, such as Figure 4 As shown, the distance adjustment assembly includes a first transmission cylinder 14 disposed at the bottom of the first limiting rod 12, a second transmission cylinder 15 disposed at the top of the second limiting rod 13, a transmission rod 18 disposed between the first transmission cylinder 14 and the second transmission cylinder 15, a turntable 19 disposed in the middle of the transmission rod 18, a third threaded groove 16 being formed inside the first transmission cylinder 14, a fourth threaded groove 17 being formed inside the second transmission cylinder 15, a third thread 20 being formed at one end of the transmission rod 18 that is adapted to the third threaded groove 16, and a fourth thread 21 being formed at the other end of the transmission rod 18 that is adapted to the fourth threaded groove 17, the threading directions of the third thread 20 and the fourth thread 21 being opposite; by rotating the transmission rod 18, the first limiting rod 12 and the second limiting rod 13 can be controlled to move closer to each other or separate from each other.

[0026] Specifically, such as Figure 5 As shown, the limiting assembly includes a sliding groove 11 formed inside the second limiting groove 10, a storage groove 22 formed at the bottom of the second limiting rod 13, a limiting seat 23 formed inside the storage groove 22, a first sliding rod 24 formed on the side of the limiting seat 23, a sliding column 26 adapted to the sliding groove 11 slidably connected to the first sliding rod 24, a spring 25 formed between the sliding column 26 and the limiting seat 23, an adjusting seat 28 formed on the bottom side of the second limiting rod 13, and a second sliding rod 29 formed on the side of the adjusting seat 28. An adjusting plate 27 is provided on the side of the sliding column 26, and the adjusting plate 27 is slidably connected to the second sliding rod 29. When the first limiting groove 8 is aligned with the second limiting groove 10, the adjusting plate 27 is pressed down, the spring 25 is compressed, and the sliding column 26 is located in the storage groove 22. The first limiting rod 12 is rotated, and when the second limiting rod 13 falls into the second limiting groove 10, and the sliding column 26 is aligned with the sliding groove 11, the adjusting plate 27 is released, the spring 25 is reset, and the sliding column 26 falls into the sliding groove 11, completing the bolt fixing.

[0027] In summary, the anti-loosening impeller nut provided in this embodiment, after the first nut 6 fixes the equipment, the second nut 7 is screwed onto the second stud 3. When the first limiting groove 8 is aligned with the second limiting groove 10, the adjusting plate 27 is pressed down, the spring 25 is compressed, and the sliding column 26 is located in the storage groove 22. The first limiting rod 12 is rotated, and when the second limiting rod 13 falls into the second limiting groove 10, and the sliding column 26 is aligned with the sliding groove 11, the adjusting plate 27 is released, the spring 25 returns to its original position, and the sliding column 26 falls into the sliding groove 11, completing the bolt fixing. Because the first thread 4 and the second thread 5 are screwed in opposite directions, the second nut 7 and the first nut 6 connected by the limiting mechanism cannot rotate under mutual restraint, thus preventing the nut from loosening.

[0028] The above description of the embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A lock nut for a bladed wheel comprising a screw head (1) characterised in that, The side of the screw head (1) is provided with a first stud (2), the top of the first stud (2) is provided with a second stud (3), the first stud (2) is provided with a first thread (4), the second stud (3) is provided with a second thread (5), the thread direction of the first thread (4) and the second thread (5) is opposite, the first stud (2) is provided with a first nut (6), the second stud (3) is provided with a second nut (7), the first nut (6) and the second nut (7) are provided with a limiting mechanism, which is used for preventing the first nut (6) from loosening.

2. A lock nut as claimed in claim 1, wherein The limiting mechanism comprises a first limiting rod (12) and a second limiting rod (13), the side of the second nut (7) is provided with a first limiting groove (8), the first limiting rod (12) is rotatably connected with the first limiting groove (8) through a first rotating shaft (9), the first limiting rod (12) and the second limiting rod (13) are provided with a distance adjusting assembly, the side of the first nut (6) is provided with a second limiting groove (10), the second limiting rod (13) and the second limiting groove (10) are provided with a limiting assembly.

3. A lock nut as claimed in claim 2, wherein The distance adjusting assembly comprises a first transmission cylinder (14) arranged at the bottom of the first limiting rod (12), the top of the second limiting rod (13) is provided with a second transmission cylinder (15), the first transmission cylinder (14) and the second transmission cylinder (15) are provided with a transmission rod (18), the middle of the transmission rod (18) is provided with a rotating disc (19).

4. A lock nut as claimed in claim 3, wherein The inside of the first transmission cylinder (14) is provided with a third thread groove (16), the inside of the second transmission cylinder (15) is provided with a fourth thread groove (17), one end of the transmission rod (18) is provided with a third thread (20) matched with the third thread groove (16), the other end of the transmission rod (18) is provided with a fourth thread (21) matched with the fourth thread groove (17), the thread direction of the third thread (20) and the fourth thread (21) is opposite.

5. A lock nut as claimed in claim 2, wherein The limiting assembly comprises a sliding groove (11) arranged in the inner side of the second limiting groove (10), the bottom of the second limiting rod (13) is provided with a storage groove (22), the inner side of the storage groove (22) is provided with a limiting seat (23), the side of the limiting seat (23) is provided with a first sliding rod (24), the first sliding rod (24) is slidably connected with a sliding column (26) matched with the sliding groove (11), the sliding column (26) and the limiting seat (23) are provided with a spring (25).

6. A lock nut as claimed in claim 5, wherein The bottom side of the second limiting rod (13) is provided with an adjusting seat (28), the side of the adjusting seat (28) is provided with a second sliding rod (29), the side of the sliding column (26) is provided with an adjusting plate (27), the adjusting plate (27) and the second sliding rod (29) are slidably connected.

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