A vibration resistant double lock nut

Abstract

The utility model discloses a kind of vibration-resistant double locking nuts, the utility model relates to nut technical field, including chassis, the bottom plate upper end is equipped with anti-loose component, the first nut body is fixedly connected in the upper of anti-loose component, the second nut body is fixedly connected in the bottom plate lower end, the second nut body is equipped with sliding slot inside, left sliding block and right sliding block are slidably connected in the sliding slot, through the double anti-loose structure of axial tightening and radial clamping combination, the locking guarantee of multilevel is realized, first heavy locking is formed by anti-loose component, through three circumferential evenly distributed moving rods, cooperate gear and bolt engagement, make radial clamping force distribution uniform, locking is stable and reliable, through the arc design of left and right grooves, not only ensure the face contact with bolt thread to increase friction, more because the pitch of its surface screw thread is less than the second nut body, when screwing, produce pitch difference, form powerful mechanical wedge tight interlock, to form second heavy locking.

Description

Technical Field

[0001] This utility model relates to the field of nut technology, specifically to a vibration-resistant double anti-loosening nut. Background Technology

[0002] In mechanical connections, the loosening of threaded fasteners has long been a technical challenge, especially on equipment subjected to continuous, high-intensity vibration. Vibration causes minute relative slippage between the threaded parts, gradually attenuating the preload and ultimately leading to connection failure, equipment malfunction, or even safety accidents. Current anti-loosening nut solutions mostly rely on a single principle, offering limited anti-loosening effectiveness and failing to withstand the impact of high-frequency vibration over long periods. To address this issue, this product features a dual anti-loosening structure. Therefore, a vibration-resistant dual anti-loosening nut needs to be designed to improve the product's performance and safety. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a vibration-resistant double anti-loosening nut, which solves the problem of poor anti-loosening performance of existing devices.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a vibration-resistant double anti-loosening nut, comprising a chassis, an anti-loosening component at the upper end of the chassis, a first nut body fixedly connected above the anti-loosening component, and a second nut body fixedly connected at the lower end of the chassis. The second nut body has a sliding groove, within which a left slider and a right slider are slidably connected. A lead screw passes through the left and right sliders, one end of which has an external thread and is connected to the internal and external threads of the right slider. The left slider has a groove containing a spring, and the other end of the lead screw is located within the groove and fitted with a spring. The left and right sliders are respectively provided with a left groove and a right groove.

[0005] Preferably, the anti-loosening component includes a fixed base, the upper end of the chassis is fixedly connected to the fixed base, a screw is rotatably connected inside the fixed base, a moving block is threadedly connected to the screw, a ring is rotatably connected to the upper end of the chassis, the chassis and the ring are coaxially provided with a through hole for the bolt to pass through, the ring is connected to the first nut body, a connecting block is provided on the ring, the moving block is fixedly connected to the connecting block, a limiting groove is provided circumferentially on the ring, and a clamping mechanism is movably connected in the limiting groove.

[0006] Preferably, the clamping mechanism includes a movable frame, which is movably connected to the limiting groove. A movable rod is hinged to the upper end of the chassis, which passes through the movable frame and is equipped with a gear.

[0007] Preferably, the left groove and the right groove are arc-shaped surfaces adapted to the bolt thread, and the arc-shaped surfaces are provided with threads, the thread pitch of which is less than the thread pitch of the second nut body.

[0008] Preferably, the teeth of the gear can mesh with the surface of the bolt.

[0009] Preferably, the number of movable rods is three.

[0010] Preferably, the number of limiting grooves is three.

[0011] Beneficial effects This utility model provides a vibration-resistant double anti-loosening nut with the following beneficial effects: This utility model has a simple structure and is easy to use. Through the double anti-loosening structure combining axial tightening and radial clamping, it achieves multi-level locking protection. The anti-loosening components constitute the first layer of locking. Through three circumferentially evenly distributed moving rods, in conjunction with gears and bolts, the radial clamping force is evenly distributed, and the locking is stable and reliable. Through the arc-shaped design of the left and right grooves, not only is surface contact with the bolt threads ensured to increase friction, but also, because the pitch of the surface threads is smaller than that of the second nut body, a pitch difference is generated when tightening, forming a strong mechanical wedge interlock, thus forming the second layer of locking. This further improves the anti-loosening performance and effectively resists the risk of loosening caused by high-frequency vibration. Its anti-loosening reliability far exceeds that of traditional single-structure nuts, thereby effectively improving the practicality and safety of the structure. Attached Figure Description Figure 1 This is a side view of the present invention.

[0012] Figure 2 This is a schematic diagram of the structure of the first nut body of this utility model.

[0013] Figure 3 This is a schematic diagram of the structure of the ring of this utility model.

[0014] Figure 4 This is a cross-sectional view of the second nut body of this utility model.

[0015] Figure 5 This is a schematic diagram of the structure of the ring of this utility model.

[0016] Figure 6 This is a schematic diagram of the structure of the right slider of this utility model.

[0017] In the diagram: 1. Chassis; 2. First nut body; 3. Second nut body; 4. Right slider; 5. Left slider; 6. Lead screw; 7. Spring; 8. Left groove; 9. Right groove; 10. Fixed base; 11. Screw; 12. Moving block; 13. Ring; 14. Connecting block; 15. Limiting groove; 16. Moving frame; 17. Moving rod; 18. Gear; 19. Slide groove; 20. Through hole. Detailed Implementation

[0018] 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.

[0019] Please see Figure 1-6 This utility model provides a technical solution: a vibration-resistant double anti-loosening nut, including a chassis 1, an anti-loosening component at the upper end of the chassis 1, a first nut body 2 fixedly connected above the anti-loosening component, a second nut body 3 fixedly connected at the lower end of the chassis 1, a groove 19 inside the second nut body 3, a left slider 5 and a right slider 4 slidably connected in the groove 19, a lead screw 6 passing through the left slider 5 and the right slider 4, one end of the lead screw 6 having an external thread and being connected to the internal and external threads of the right slider 4, a groove inside the left slider 5, a spring 7 inside the groove, the other end of the lead screw 6 located in the groove and fitted with the spring 7, a left groove 8 and a right groove 9 respectively on the left slider 5 and the right slider 4; the anti-loosening component includes a fixed base 10, the upper end of the chassis 1 being fixedly connected to the fixed base 10, a screw 11 rotatably connected in the fixed base 10, and a moving block 1 connected to the internal and external threads of the screw 11. 2. A ring 13 is rotatably connected to the upper end of the chassis 1. The chassis 1 and the ring 13 are coaxially provided with a through hole 20 for bolts to pass through. The ring 13 is connected to the first nut body 2. A connecting block 14 is provided on the ring 13. The moving block 12 is fixedly connected to the connecting block 14. A limiting groove 15 is provided circumferentially on the ring 13. A clamping mechanism is movably connected in the limiting groove 15. The clamping mechanism includes a moving frame 16, which is movably connected to the limiting groove 15. A moving rod 17 is hinged to the upper end of the chassis 1. The moving rod 17 passes through the moving frame 16. A gear 18 is provided on the moving rod 17. The left groove 8 and the right groove 9 are arc-shaped surfaces adapted to the bolt thread. Threads are provided on the arc-shaped surfaces. The thread pitch is smaller than the thread pitch of the second nut body 3. The gear teeth of the gear 18 can mesh with the bolt surface. There are three moving rods 17 and three limiting grooves 15.

[0020] Those skilled in the art can connect the components in this case sequentially. The specific connection and operation sequence should refer to the working principle described below. The detailed connection methods are well-known technologies in the field. The working principle and process are mainly described below.

[0021] Example: First, in use, the bolt is passed through the through hole 20 and screwed to the predetermined position like a regular nut, with an initial preload applied. Simultaneously, the screw 11 is rotated to drive the moving block 12 to move axially, causing the connecting block 14 to rotate the ring 13. The rotation of the ring 13 causes the moving frame 16 in the limiting groove 15 to swing, which in turn pushes the three moving rods 17 hinged to the chassis 1 towards the bolt's central axis. Finally, the gear 18 at the top of the moving rod 17 meshes tightly with the bolt surface, achieving uniform radial clamping and completing the first locking. Next, the lead screw 6 is rotated to compress the spring 7, causing the left slider 5 and right slider 4 to move closer to each other in the groove 19. The surfaces of the left groove 8 and right groove are arc-shaped to fit the bolt. The surface is provided with threads that grip the bolt together. Since the pitch of these threads is smaller than the pitch of the second nut body 3, a strong pitch difference wedging effect is generated when it engages with the original thread of the bolt, forming a second axial locking. This achieves coordinated work and ensures the absolute safety of the nut under extreme vibration environments. When disassembling, first rotate the screw 6 in the reverse direction. The screw 6 engages with the right slider 4 through its thread, pushing the right slider 4 to the right. At the same time, the left slider 5 is pushed to the left by the restoring force of its internal spring 7, separating the left slider 5 from the right slider 4 and releasing the second locking. Then, rotate the screw 11 in the reverse direction to drive the moving rod 17 to loosen the radial clamping on the bolt, releasing the first locking. Finally, the nut can be unscrewed as a whole.

[0022] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vibration-resistant double anti-loosening nut, characterized in that, The system includes a chassis (1), an anti-loosening component on the upper end of the chassis (1), a first nut body (2) fixedly connected above the anti-loosening component, a second nut body (3) fixedly connected to the lower end of the chassis (1), a sliding groove (19) in the second nut body (3), a left slider (5) and a right slider (4) slidably connected in the sliding groove (19), a lead screw (6) passing through the left slider (5) and the right slider (4), one end of the lead screw (6) having an external thread and being connected to the internal and external threads of the right slider (4), a groove in the left slider (5) having a spring (7) in the groove, the other end of the lead screw (6) being located in the groove and fitted with the spring (7), and a left groove (8) and a right groove (9) respectively on the left slider (5) and the right slider (4).

2. The vibration-resistant double anti-loosening nut according to claim 1, characterized in that, The anti-loosening component includes a fixed base (10), the upper end of the chassis (1) is fixedly connected to the fixed base (10), a screw (11) is rotatably connected inside the fixed base (10), a moving block (12) is threaded inside and outside the screw (11), a ring (13) is rotatably connected to the upper end of the chassis (1), the chassis (1) and the ring (13) are coaxially provided with a through hole (20) for the bolt to pass through, the ring (13) is connected to the first nut body (2), a connecting block (14) is provided on the ring (13), the moving block (12) is fixedly connected to the connecting block (14), a limiting groove (15) is provided circumferentially on the ring (13), and a clamping mechanism is movably connected inside the limiting groove (15).

3. The vibration-resistant double anti-loosening nut according to claim 2, characterized in that, The clamping mechanism includes a movable frame (16), which is movably connected to the limiting groove (15). A movable rod (17) is hinged to the upper end of the chassis (1). The movable rod (17) passes through the movable frame (16) and is equipped with a gear (18).

4. The vibration-resistant double anti-loosening nut according to claim 1, characterized in that, The left groove (8) and the right groove (9) are arc-shaped surfaces adapted to the bolt thread. The arc-shaped surfaces are provided with threads, and the thread pitch is less than the pitch of the second nut body (3).

5. The vibration-resistant double anti-loosening nut according to claim 3, characterized in that, The teeth of the gear (18) can mesh with the surface of the bolt.

6. The vibration-resistant double anti-loosening nut according to claim 3, characterized in that, The number of movable rods (17) is three.

7. The vibration-resistant double anti-loosening nut according to claim 2, characterized in that, The number of limiting grooves (15) is three.

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