Self-locking anchor bolt
By setting up an expansion structure and nut outside the anchor bolt, and using structures such as elastic clamps and limiting claws to achieve self-locking function, the problem of expansion type anchor bolt loose under vibration is solved, and the fixing effect and connection stability of the anchor bolt are improved.
Patent Information
- Application Number
- CN202422387420.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-29
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-09-29
AI Technical Summary
Existing expansion anchor bolts are prone to loosening under shock force, resulting in unsolid connection components, which may cause equipment damage and economic losses.
A self-locking anchor bolt is designed to provide expansion structures and nuts on the outside of the bolts, and the self-locking function is achieved using structures such as elastic clamps and limiting claws to enhance friction to prevent loosening.
It improves the fixing effect and locking firmness of the anchor bolt, automatically locks, is not easy to loosen, and has a more stable connection, reducing the risk of equipment damage.
Smart Images
Figure CN223120372U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of anchor bolts, and specifically, to a self-locking anchor bolt. Background Art
[0002] An anchor bolt refers to the general term for all post-anchoring components, with a wide range, and is used in the connections of various industries such as machinery, construction, electronics, aerospace, etc. in life. It is divided into metal anchor bolts and non-metal anchor bolts according to different raw materials, and is divided into expansion-type anchor bolts, expansion-type anchor bolts, adhesive-type anchor bolts, concrete screws, nail guns, concrete nails, etc. according to different anchoring mechanisms.
[0003] The expansion-type anchor bolt is a commonly used anchor bolt for people to connect components. When people connect the expansion-type anchor bolt to a place with large vibration force, it is self-locked through the friction force between the nut and the screw cap. When working under long-term vibration, the expansion-type anchor bolt often loosens due to these vibration forces, resulting in the loosening of the connected components, affecting the firmness of the connected components, and even causing damage to mechanical equipment, etc., causing danger and bringing greater economic losses. Therefore, the utility model provides a self-locking anchor bolt to solve the above problems. Content of the Utility Model
[0004] The utility model provides a self-locking anchor bolt, which solves the problem that the anchor bolt in the related technology loosens due to vibration force.
[0005] The technical solution of the utility model is as follows: A self-locking anchor bolt includes a bolt. An expansion structure is arranged outside the bolt. A nut is arranged above the expansion structure. The inner cavity of the nut is threadedly installed outside the bolt. The bolt includes an extrusion ring. A limit head is fixedly installed at the upper end of the extrusion ring. A screw rod is fixedly installed at the upper end of the limit head. External threads are provided on the side wall of the screw rod. The expansion structure includes a collar. A sleeve is fixedly installed at the lower end of the collar. A spreading piece is fixedly installed at the lower end of the sleeve. A deformation seam is provided at the lower end of the side wall of the sleeve. The lower end of the deformation seam extends to the surface of the spreading piece. Expansion grooves and grooves are provided on the side wall of the sleeve. A limit claw is fixedly installed on the surface of the groove. A resilient catch is installed on the upper surface of the collar. The nut includes a nut body. An annular groove is provided at one end of the nut body. A clamping groove is provided in the inner cavity of the annular groove. An internal thread is provided at the center of the nut body.
[0006] Preferably, anti-slip pads are fixedly installed on the upper surface of the collar. There are two groups of anti-slip pads, and the anti-slip pads are arranged on both sides of the resilient catch.
[0007] Preferably, through grooves are provided at the centers of the sleeve and the collar.
[0008] Preferably, several groups of resilient catches and clamping grooves are correspondingly arranged.
[0009] Preferably, there are two sets of the expansion grooves, several sets of the limiting claws are provided, and four sets of the deformation joints are opened.
[0010] Preferably, anti-slip bumps are fixedly installed at the lower end of the side wall of the screw.
[0011] Preferably, there are several sets of the anti-slip bumps, and the anti-slip bumps are arranged in a ring shape on the side wall of the screw.
[0012] Preferably, the limiting head is arranged in a conical shape, and the anti-slip pad is arranged in a ring shape
[0013] The working principle and beneficial effects of the present utility model are as follows:
[0014] 1. In the present utility model, an expansion structure is sleeved outside the bolt, and then a nut is threadedly installed on the surface of the bolt. Through the arrangement of the elastic clamping blocks, when the nut is installed, it is clamped in the inner cavity of the clamping groove, so that the nut can only be tightened and rotated, and cannot be loosened and rotated, realizing the self-locking function. During the expansion and deformation process of the expansion structure, the limiting claws will open, increasing the friction between the expansion structure and the equipment, improving the fixing effect of the anchor bolt, realizing the locking function, improving the firmness of the anchor bolt locking, automatically locking, not easy to loosen, and having a firm connection. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The present utility model will be further described in detail below with reference to the drawings and specific embodiments.
[0016] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;
[0017] Figure 2 is a sectional structural schematic diagram of the present utility model;
[0018] Figure 3 is a three-dimensional structural schematic diagram of the expansion structure of the present utility model;
[0019] Figure 4 is a three-dimensional structural schematic diagram of the bolt of the present utility model;
[0020] Figure 5 is a three-dimensional structural schematic diagram of the nut of the present utility model.
[0021] In the figure: 1. Bolt; 2. Expansion structure; 3. Nut; 11. Extrusion ring; 12. Limiting head; 13. Screw; 14. Anti-slip bump; 15. External thread; 20. Elastic clamping block; 21. Sleeve ring; 22. Sleeve; 23. Opening piece; 24. Deformation joint; 25. Expansion groove; 26. Groove; 27. Limiting claw; 28. Through groove; 29. Anti-slip pad; 31. Nut body; 32. Internal thread; 33. Annular groove; 34. Clamping groove. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0022] The following will describe in clear and complete detail the technical solutions in the embodiments of the present utility model in combination with 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 of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present utility model.
[0023] Embodiment 1
[0024] As Figures 1 to 5 shown, this embodiment proposes including bolt 1. An expansion structure 2 is arranged outside bolt 1. A nut 3 is arranged above the expansion structure 2. The inner cavity of the nut 3 is threadedly installed outside the bolt 1. Bolt 1 includes an extrusion ring 11. A limit head 12 is fixedly installed at the upper end of the extrusion ring 11. A screw rod 13 is fixedly installed at the upper end of the limit head 12. An external thread 15 is provided on the side wall of the screw rod 13. The expansion structure 2 includes a sleeve ring 21. A sleeve 22 is fixedly installed at the lower end of the sleeve ring 21. Elastic catch blocks 20 are installed on the upper surface of the sleeve ring 21. The nut 3 includes a nut body 31. An annular groove 33 is provided at one end of the nut body 31. A clamping groove 34 is provided in the inner cavity of the annular groove 33. An internal thread 32 is provided at the center of the nut body 31. An anti-slip pad 29 is fixedly installed on the upper surface of the sleeve ring 21. There are two groups of anti-slip pads 29. The anti-slip pads 29 are arranged on both sides of the elastic catch blocks 20. A through groove 28 is provided at the center of the sleeve 22 and the sleeve ring 21. A number of groups of elastic catch blocks 20 and clamping grooves 34 are correspondingly arranged.
[0025] In this embodiment, by sleeving the expansion structure 2 outside the bolt 1 and then threadedly installing the nut 3 on the surface of the bolt 1, through the arrangement of the elastic catch blocks 20, when the nut 3 is installed, it is clamped in the inner cavity of the clamping groove 34, so that the nut 3 can only be tightened and rotated, and cannot be loosened and rotated, realizing the self-locking function, realizing the locking function, improving the firmness of the anchor bolt locking, automatically locking, not easy to loosen, firmly connected. During the locking process, through the arrangement of the annular groove 33, the elastic catch blocks 20 are pressed into the inner cavity of the annular groove 33, facilitating the locking work. When loosening and rotating, the opening direction of the elastic catch blocks 20 is stuck in the inner cavity of the clamping groove 34 and cannot be loosened and rotated. Through the arrangement of the internal thread 32 and the external thread 15, it is convenient for the bolt 1 and the nut 3 to be threadedly connected. Through the arrangement of the anti-slip pad 29, the friction between the expansion structure 2 and the nut 3 is increased, preventing the nut 3 from sliding, and further improving the self-locking effect. Through the arrangement of the extrusion ring 11, the lower end of the expansion structure 2 is limited.
[0026] Embodiment 2
[0027] As Figures 1 to 5As shown in the figure, based on the same concept as in the above-mentioned Embodiment 1, this embodiment also proposes that a spreading piece 23 is fixedly installed at the lower end of the sleeve 22. A deformation joint 24 is opened at the lower end of the side wall of the sleeve 22, and the lower end of the deformation joint 24 extends to the surface of the spreading piece 23. An expansion groove 25 and a groove 26 are opened on the side wall of the sleeve 22. A limiting claw 27 is fixedly installed on the surface of the groove 26. There are two groups of expansion grooves 25, and there are several groups of limiting claws 27. Four groups of deformation joints 24 are opened. An anti-slip bump 14 is fixedly installed at the lower end of the side wall of the screw 13. There are several groups of anti-slip bumps 14, and the anti-slip bumps 14 are arranged in a ring on the side wall of the screw 13. The limiting head 12 is arranged in a conical shape, and the anti-slip pad 29 is arranged in a ring.
[0028] In this embodiment, the opening of the deformation joint 24 and the arrangement of the spreading piece 23 facilitate the clamping of the sleeve 22 on the surface of the limiting head 12 to fix the bolt 1 and the expansion structure 2. The arrangement of the anti-slip bumps 14 increases the friction between the bolt 1 and the expansion structure 2 to prevent the expansion structure 2 from sliding. The opening of the expansion groove 25 facilitates the expansion of the expansion structure 2 to make the fixation of the equipment more tight. During the expansion and deformation process of the expansion structure 2, the limiting claws 27 will open, increasing the friction between the expansion structure 2 and the equipment and improving the fixing effect of the anchor bolt.
[0029] During operation, the expansion structure 2 is sleeved outside the bolt 1, and then the nut 3 is threadedly installed on the surface of the bolt 1. Through the arrangement of the elastic clamping block 20, when the nut 3 is installed, it is clamped in the inner cavity of the card slot 34, so that the nut 3 can only be tightened and rotated, and cannot be loosened and rotated, realizing the self-locking function, not easy to loosen, and the connection is firm. The arrangement of the anti-slip pad 29 increases the friction between the expansion structure 2 and the nut 3 to prevent the nut 3 from sliding and further improves the self-locking effect. The opening of the deformation joint 24 and the arrangement of the spreading piece 23 facilitate the clamping of the sleeve 22 on the surface of the limiting head 12 to fix the bolt 1 and the expansion structure 2. The arrangement of the anti-slip bumps 14 increases the friction between the bolt 1 and the expansion structure 2 to prevent the expansion structure 2 from sliding. The opening of the expansion groove 25 facilitates the expansion of the expansion structure 2 to make the fixation of the equipment more tight. During the expansion and deformation process of the expansion structure 2, the limiting claws 27 will open, increasing the friction between the expansion structure 2 and the equipment and improving the fixing effect of the anchor bolt.
[0030] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.
Claims
1. A self-locking anchor bolt, characterized in that, It includes a bolt (1), an expansion structure (2) is arranged outside the bolt (1), a nut (3) is arranged above the expansion structure (2), and the inner cavity of the nut (3) is threadedly installed outside the bolt (1). The bolt (1) includes an extrusion ring (11), a limit head (12) is fixedly installed at the upper end of the extrusion ring (11), a screw rod (13) is fixedly installed at the upper end of the limit head (12), and an external thread (15) is provided on the side wall of the screw rod (13). The expansion structure (2) includes a collar (21), a sleeve (22) is fixedly installed at the lower end of the collar (21), an opening piece (23) is fixedly installed at the lower end of the sleeve (22), a deformation joint (24) is provided at the lower end of the side wall of the sleeve (22), and the lower end of the deformation joint (24) extends to the surface of the opening piece (23). An expansion groove (25) and a groove (26) are provided on the side wall of the sleeve (22), a limit claw (27) is fixedly installed on the surface of the groove (26), and an elastic snap block (20) is installed on the upper surface of the collar (21). The nut (3) includes a nut body (31), an annular groove (33) is provided at one end of the nut body (31), a clamping groove (34) is provided in the inner cavity of the annular groove (33), and an internal thread (32) is provided at the center of the nut body (31).
2. The self-locking anchor bolt according to claim 1, wherein, An anti-slip pad (29) is fixedly installed on the upper surface of the collar (21), there are two groups of the anti-slip pads (29), and the anti-slip pads (29) are arranged on both sides of the elastic snap block (20).
3. The self-locking anchor bolt according to claim 1, characterized in that, A through groove (28) is provided at the center of the sleeve (22) and the collar (21).
4. A self-locking anchor bolt according to claim 1, characterized in that, There are several groups of the elastic snap blocks (20) corresponding to the clamping grooves (34).
5. The self-locking anchor bolt according to claim 1, characterized in that, There are two groups of the expansion grooves (25), several groups of the limit claws (27), and four groups of the deformation joints (24).
6. The self-locking anchor bolt according to claim 1, characterized in that, An anti-slip convex point (14) is fixedly installed at the lower end of the side wall of the screw rod (13).
7. A self-locking anchor bolt according to claim 6, wherein, There are several groups of the anti-slip convex points (14), and the anti-slip convex points (14) are arranged in a ring on the side wall of the screw rod (13).
8. A self-locking anchor bolt according to claim 2, wherein, The limit head (12) is conical, and the anti-slip pad (29) is annular.