Anti-falling bolt

Abstract

The utility model belongs to the technical field of bolts, and particularly relates to an anti-falling bolt. Comprising a bolt head; the stud is arranged at one end of the bolt head; the nut is arranged on the stud in a threaded mode, and the nut is used for screwing an object needing to be fastened; the channel extending in the axial direction is formed in the stud; the anti-falling assembly is arranged in the channel and extends out of the channel to abut against the nut; the anti-disengaging assembly comprises an internal thread arranged on the inner diameter of the channel; the fastening bolt is screwed into the channel, and the fastening bolt is matched with the internal thread in the channel; and the abutting plate is arranged on the fastening bolt, after the nut is screwed to the preset position, the fastening bolt is screwed, the pressing force of the nut is increased through the abutting plate, and therefore the position of the nut is limited. The utility model provides an anti-drop bolt which not only can effectively prevent a nut from dropping, but also does not affect the fastening effect of a stud and the nut.

Description

Technical Field

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

[0002] A bolt is a cylindrical threaded fastener used with a nut in mechanical parts. It consists of a head and a threaded shank, and is used to fasten two parts with through holes. Bolts in mechanical structures are subject to vibration or impact forces over long periods, which can easily cause them to loosen, leading to connection failure and mechanical malfunction.

[0003] Utility model patent CN219655067U discloses an anti-loosening bolt, including a screw rod, a nut A for fastening is screwed onto the outer circumference of the screw rod, and the outer circumference surface of the screw rod has a groove for connection, and there are two sets of grooves. A support protrusion is fitted into the groove, and there are two sets of protrusions. A washer that fits between the two sets of protrusions and is sleeved and connected to the screw rod is integrally constructed. The bottom surface of the washer is integrally constructed with a ring tube for connection, and a rotating tube for support is rotatably installed at the end of the ring tube away from the screw rod. A nut B that is screwed onto the screw rod is integrally constructed at the end of the rotating tube away from the ring tube. Through the design of the washer, groove, nut A, and protrusions, the nut A used for fastening on the bolt is conveniently limited and fixed, so that the nut A can be intercepted, and the bolt is less likely to fall off when fastening objects, thus improving the safety of bolt use.

[0004] The anti-loosening bolt has a groove, in which the fastener slides to tighten against the nut, thus restricting the nut's position and preventing it from loosening under external vibration. However, the groove is located on the outer surface of the stud, inevitably affecting the threads on the stud's outer surface. This results in an insufficiently tight and ideal fit between the stud's outer threads and the nut's inner threads, leading to a poorer tightening effect. This poor tightening effect can cause serious safety hazards and even lead to structural failure and other serious consequences. Utility Model Content

[0005] The purpose of this utility model is to address the aforementioned technical problems by providing an anti-loosening bolt that can effectively prevent the nut from falling off without affecting the fastening effect between the stud and the nut.

[0006] In view of this, the present invention provides an anti-loosening bolt, comprising:

[0007] Bolt head;

[0008] Stud, located at one end of the bolt head;

[0009] A nut is a threaded object that is tightened onto a stud.

[0010] A channel, which is an axially extending channel provided inside the stud;

[0011] An anti-detachment component is installed inside the channel and extends out of the channel to abut against the nut;

[0012] The anti-detachment components include:

[0013] Internal thread, located within the inner diameter of the channel;

[0014] Tighten the bolts and screw them into the channel; the bolts engage with the internal threads inside the channel.

[0015] The abutment plate is installed on the fastening bolt. After the nut is tightened to the predetermined position, the fastening bolt is tightened again. The abutment plate increases the clamping force of the nut, thereby restricting the position of the nut.

[0016] In the above technical solution, further, the rear end of the nut is provided with a connecting part, the interior of the connecting part is provided with a through groove communicating with the nut, and the stud passes through the through groove; the outer end of the connecting part is provided with an external thread, and a screw cap is provided on the connecting part, the screw cap being threadedly connected to the external thread of the connecting part; a pressing block is provided in the through groove, one end of the pressing block extending out of the through groove and located inside the screw cap, the pressing block pressing the stud; a convex plate is provided at one end of the pressing block located inside the through groove, and an elastic element is sleeved on the pressing block, the elastic element being located between the convex plate and the screw cap, after the screw cap is tightened on the connecting part, it covers the pressing block and the elastic element, the elastic element providing the pressing block with elastic force against the stud through the convex plate.

[0017] In any of the above technical solutions, the screw cap is further provided with a connecting groove that communicates with the through groove. The fastening bolt passes through the channel from the connecting groove and the through groove. After the fastening bolt is tightened with the internal thread in the channel, the abutment plate abuts against the screw cap, thereby abutting the nut.

[0018] In any of the above technical solutions, the elastic element is further defined as a compression spring.

[0019] In any of the above technical solutions, a groove is further provided on the front side inside the nut, and a washer is provided in the groove.

[0020] In any of the above technical solutions, the bolt head is further provided with an internal hexagonal groove for installing and removing the bolt using tools.

[0021] In any of the above technical solutions, furthermore, both sides of the outer wall of the nut are provided with unlocking grooves for disassembling and installing the nut using tools.

[0022] The beneficial effects of this utility model are:

[0023] 1. An axially extending channel is provided inside the stud, and a fastening bolt is installed in the channel. Tightening the fastening bolt causes the abutment plate on the fastening bolt to press against the nut, increasing the clamping force of the nut, thereby restricting the position of the nut and preventing the nut from loosening or falling off due to external forces such as vibration and impact.

[0024] 2. The connecting part is connected to the nut, the stud passes through the through groove, and the screw cap is threaded to the connecting part, forming a wrapping constraint on the nut and the stud. The extrusion block and elastic element in the through groove cooperate to continuously extrude pressure on the stud, making the extrusion block tightly press against the stud, increasing the friction between the stud and the nut, and preventing relative rotation or displacement between the two.

[0025] 3. Insert the fastening bolt into the connecting groove on the screw cap, then through the through groove, and into the channel inside the stud. As the fastening bolt is screwed in, the pressure of the abutment plate on the screw cap increases, which indirectly acts on the nut through the screw cap, so that the nut is subjected to dual pressure from the abutment plate and the screw cap. The elastic element is compressed, continuously providing the compression block with elastic force to tighten the stud, enhancing the stability of the entire connection structure and forming an all-round, multi-layer anti-loosening fastening system.

[0026] 4. An internal hexagonal groove is provided on the head of the bolt to provide operators with a standardized, convenient and efficient operating interface, so that torque can be applied accurately and stably during the installation and removal of bolts, ensuring that the tightness of the bolt installation meets the requirements, and that the operation can be completed smoothly when disassembly is required, thereby improving work efficiency.

[0027] 5. With the help of tools that match the unlocking slot, torque can be applied more easily. Compared with conventional nuts, the operation is easier and greatly improves work efficiency. The unlocking slot allows operators to use smaller and more flexible tools to accurately operate the nut in narrow spaces, ensuring that the installation and disassembly of bolted connections can be completed smoothly. Attached Figure Description

[0028] Figure 1 This is a first three-dimensional structural schematic diagram of this utility model;

[0029] Figure 2 This is a schematic diagram of the second three-dimensional structure of this utility model;

[0030] Figure 3 This is a three-dimensional structural diagram of the first type of anti-detachment component of this utility model;

[0031] Figure 4 This is a schematic diagram of the second three-dimensional structure of the anti-detachment component of this utility model;

[0032] Figure 5 This is a three-dimensional structural diagram of the first type of connecting part of this utility model;

[0033] Figure 6 This is a schematic diagram of the second three-dimensional structure of the connecting part of this utility model;

[0034] The reference numerals in the diagram are as follows: 1. Bolt head; 2. Stud; 3. Nut; 4. Channel; 5. Anti-loosening component; 51. Internal thread; 52. Fastening bolt; 53. Abutment plate; 6. Connecting part; 61. Through groove; 62. External thread; 7. Screw cap; 8. Extrusion block; 81. Protruding plate; 82. Elastic element; 9. Connecting groove; 10. Groove; 11. Washer; 12. Internal hexagonal groove; 13. Unlocking groove. Detailed Implementation

[0035] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0036] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0037] Example 1:

[0038] like Figure 1 , Figure 3 and Figure 4 As shown, this embodiment provides an anti-loosening bolt, including:

[0039] Bolt head 1;

[0040] Stud 2 is located at one end of bolt head 1;

[0041] Nut 3, with threads on stud 2, is tightened to fasten the object to be fastened;

[0042] Channel 4: An axially extending channel 4 is provided inside the stud 2;

[0043] Anti-detachment component 5 is installed inside channel 4 and extends out of channel 4 to abut against nut 3;

[0044] Anti-detachment component 5 includes:

[0045] Internal thread 51 is located within the inner diameter of channel 4;

[0046] The fastening bolt 52 is screwed into the channel 4, and the fastening bolt 52 engages with the internal thread 51 in the channel 4.

[0047] The abutment plate 53 is set on the fastening bolt 52. After the nut 3 is tightened to the predetermined position, the fastening bolt 52 is tightened. The abutment plate 53 increases the clamping force of the nut 3, thereby restricting the position of the nut 3.

[0048] This technical solution possesses the basic fastening function of a common bolt. Through the cooperation of the bolt head 1, stud 2, and nut 3, the objects to be fastened are tightly connected together, utilizing the friction of the threads to provide the initial fastening force. The anti-loosening function is the core function of this bolt. An axially extending channel 4 is provided inside the stud 2, and an anti-loosening component 5 is installed within the channel 4. The fastening bolt 52 in the anti-loosening component 5 mates with the internal thread 51 within the channel 4. When the nut 3 is tightened to the predetermined position, the fastening bolt 52 is tightened further, causing the abutment plate 53 on the fastening bolt 52 to press against the nut 3, increasing the clamping force on the nut 3, thereby restricting the position of the nut 3 and preventing it from loosening or falling off due to external forces such as vibration or impact.

[0049] Workflow: Pass stud 2 through the mounting hole of the object to be fastened, and then thread nut 3 onto stud 2. At this point, nut 3 is not fully tightened; it only initially positions the object. Using a suitable tool (such as a wrench), tighten nut 3 according to the specified torque requirements until the predetermined tightening position is reached, ensuring the fastened objects are tightly fitted together. At this point, the bolt has completed the tightening function of a regular bolt. Since nut 3 is now tightened to the predetermined position, the anti-loosening function is activated. Using appropriate tools, screw the fastening bolt 52 into the channel 4. As the fastening bolt 52 is screwed in, it gradually moves towards the nut 3 due to its engagement with the internal thread 51 within the channel 4. The abutment plate 53 on the fastening bolt 52 moves closer to the nut 3 as the bolt 52 moves. When the fastening bolt 52 is tightened to a certain extent, the abutment plate 53 tightly presses against the nut 3, increasing the clamping force of the nut 3 on the fastened object. This provides additional constraint on the nut 3 from another direction, preventing it from loosening or falling off under various external forces, thus completing the entire anti-loosening bolt process and ensuring the long-term stability of the connection. This improves the stability and reliability of the bolt connection, effectively preventing the nut 3 from loosening or falling off during use, ensuring that the fastened object remains tightly connected, and guaranteeing the safe and stable operation of related equipment or structures under various working conditions. It also reduces safety hazards and equipment failure risks caused by bolt loosening.

[0050] Example 2:

[0051] This embodiment provides an anti-loosening bolt, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0052] like Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, in this embodiment, the optimized design includes a connecting portion 6 at the rear end of the nut 3. The connecting portion 6 has a through groove 61 communicating with the nut 3, through which the stud 2 passes. The connecting portion 6 has an external thread 62 at its outer end, and a screw cap 7 on it. The screw cap 7 is threadedly connected to the external thread 62 of the connecting portion 6. A pressing block 8 is located within the through groove 61, with one end extending out of the through groove 61 and positioned within the screw cap 7. The pressing block 8 presses against the stud 2. A protruding plate 81 is located at one end of the pressing block 8 inside the through groove 61. An elastic element 82 is fitted onto the pressing block 8, positioned between the protruding plate 81 and the screw cap 7. After the screw cap 7 is tightened onto the connecting portion 6, it covers the pressing block 8 and the elastic element 82. The elastic element 82 provides the pressing block 8 with a force that presses against the stud 2 through the protruding plate 81.

[0053] In this technical solution, in addition to the clamping constraint of the anti-loosening component 5 on the nut 3, the connecting part 6 and the screw cap 7 structure provide additional constraints for the nut 3 and the stud 2. The connecting part 6 is connected to the nut 3, the stud 2 passes through the through groove 61, and the screw cap 7 is threadedly connected to the connecting part 6, forming a wrapping constraint on the nut 3 and the stud 2. The squeezing block 8 and the elastic element 82 in the through groove 61 cooperate to continuously squeeze the stud 2. The elastic element 82 provides elastic force to the squeezing block 8 through the protrusion 81, making the squeezing block 8 tightly press against the stud 2, increasing the friction between the stud 2 and the nut 3, and preventing relative rotation or displacement between the two. After the screw cap 7 is tightened on the connecting part 6, it covers the squeezing block 8 and the elastic element 82, protecting these components and preventing external impurities, moisture, etc. from entering and affecting their performance.

[0054] Workflow: After tightening nut 3 to the predetermined position and tightening bolt 52 in anti-loosening assembly 5, the installation of connecting part 6 and screw cap 7 begins. The pressing block 8 is placed into through groove 61, with one end of the pressing block 8 extending out of the through groove 61 and the protruding plate 81 located inside the through groove 61. The elastic element 82 is then placed on the pressing block 8, positioned between the protruding plate 81 and screw cap 7. The screw cap 7 is aligned with the external thread 62 of connecting part 6, and a suitable tool (such as a wrench) is used to begin tightening the screw cap 7. As the screw cap 7 is screwed in, it gradually approaches the pressing block 8, and the screw cap 7 continues to tighten until the pressing block 8 is pushed by the screw cap 7 and begins to press against the stud 2. Simultaneously, the elastic element 82 is compressed, providing a continuous elastic force to the pressing block 8 against the stud 2 through the protruding plate 81, further enhancing the connection stability between the stud 2 and nut 3. When the cap 7 is tightened into place, it completes the sealing of the compression block 8 and the elastic element 82, activating the entire anti-loosening bolt installation and anti-loosening mechanism. This ensures that the bolt connection remains stable and reliable during subsequent use, effectively resisting various external forces that could cause loosening. Based on the original anti-loosening bolt design, the newly added structure further enhances the stability of the bolt connection. Through the coordinated action of the rear connecting part 6 of the nut 3, the cap 7, the compression block 8, and the elastic element 82, the nut 3 and stud 2 are constrained from multiple dimensions. This aims to further prevent loosening of the connection due to vibration, prolonged use, and other factors, ensuring that the connection of the fastened objects remains reliable even under extreme working conditions, comprehensively guaranteeing the safe operation of the equipment or structure.

[0055] like Figure 5 As shown, in this embodiment, the screw cap 7 is optimized to have a connecting groove 9 that communicates with the through groove 61. The fastening bolt 52 passes through the channel 4 from the connecting groove 9 and the through groove 61. After the fastening bolt 52 is tightened with the internal thread 51 in the channel 4, the abutment plate 53 abuts against the screw cap 7, thereby abutting against the nut 3.

[0056] In this technical solution, the connecting groove 9 allows the fastening bolt 52 to pass through the connecting groove 9 and the through groove 61 into the channel 4, achieving an integrated connection between the anti-loosening component 5, the rear connecting part 6 of the nut 3, and the screw cap 7. When the fastening bolt 52 is tightened with the internal thread 51 in the channel 4, the abutment plate 53 not only abuts against the nut 3 but also against the screw cap 7, tightly combining the entire anti-loosening structure into a stable fastening whole, greatly enhancing the stability of the bolt connection. By abutting the screw cap 7 and then against the nut 3 through the abutment plate 53, this multi-aggregate method adds additional constraint points and forces on the basis of the original anti-loosening function, further restricting the movement space of the nut 3, effectively preventing the nut 3 from loosening or falling off due to external forces such as vibration and impact, and significantly improving the anti-loosening performance of the bolt.

[0057] Workflow: After positioning the object to be fastened and initially tightening the nut 3, place the compression block 8 into the through groove 61, put on the elastic element 82, and then screw the screw cap 7 onto the external thread 62 of the connecting part 6. Simultaneously, prepare the fastening bolt 52, ensuring it matches the internal thread 51 in the channel 4. Insert the fastening bolt 52 through the connecting groove 9 on the screw cap 7, then through the through groove 61, into the channel 4 inside the stud 2. Using an adapter tool, begin tightening the fastening bolt 52. As the fastening bolt 52 is screwed in, due to its interaction with the internal thread 51 in the channel 4, the fastening bolt 52 gradually moves towards the nut 3. When the fastening bolt 52 is tightened to a certain extent, the abutment plate 53 on the fastening bolt 52 begins to contact and abut against the screw cap 7. As the bolt 52 is tightened further, the pressure of the abutment plate 53 on the screw cap 7 increases. This pressure indirectly acts on the nut 3 through the screw cap 7, subjecting the nut 3 to dual pressure from both the abutment plate 53 and the screw cap 7, further increasing the clamping force of the nut 3 on the fastened object. Simultaneously, the elastic element 82 is compressed, continuously providing the compression block 8 with elastic force to press against the stud 2, further enhancing the stability of the entire connection structure. The addition of the connecting groove 9 aims to further improve the overall anti-loosening system of the bolt, making the synergy between the anti-loosening component 5, the screw cap 7, and the nut 3 closer, forming a comprehensive, multi-layered anti-loosening fastening system. Through the tight cooperation of the bolt 52, the abutment plate 53, the screw cap 7, and the nut 3, the stability of the bolt connection under complex working conditions is further improved on the basis of the original anti-loosening function, minimizing the possibility of the nut 3 loosening and falling off, and ensuring the safe and reliable operation of the equipment or structure.

[0058] like Figure 5 and Figure 6 As shown, in this embodiment, the optimized elastic element 82 is a compression spring.

[0059] In this technical solution, a compression spring is selected as the elastic element 82. The main purpose is to utilize its excellent elastic properties to provide a continuous and stable elastic force to the pressing block 8. During the bolt connection process, the compression spring can adapt to different working conditions and always maintain a force on the pressing block 8, ensuring that the pressing block 8 is tightly pressed against the stud 2. This effectively enhances the friction between the stud 2 and the nut 3, further improving the stability of the bolt connection, preventing the nut 3 from loosening and falling off, and ensuring the reliable operation of the equipment or structure in various complex environments.

[0060] Compression springs have a stable elastic coefficient, and after being compressed by external force, they can generate corresponding elastic force and return to their original shape. In anti-loosening bolts, they continuously push the clamping block 8 through their own elastic force, keeping the clamping block 8 in a state of compression on the stud 2, providing additional stable fastening force for the bolt connection and compensating for the insufficiency of relying solely on thread friction. When equipment or structures are subjected to external forces such as vibration and impact, the compression spring can act as a buffer, absorbing some energy and reducing the direct impact on the bolt connection 6. This not only helps protect the bolt and the fastened object, but also prevents the nut 3 from loosening due to excessive instantaneous impact force, further enhancing the reliability of the bolt connection.

[0061] Example 3:

[0062] This embodiment provides an anti-loosening bolt, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0063] like Figure 2 , Figure 5 and Figure 6 As shown, in this embodiment, the nut 3 has an optimized groove 10 on the front side inside, and a washer 11 is provided in the groove 10.

[0064] In this technical solution, a groove 10 is provided inside the front side of the nut 3 and a washer 11 is installed. The main purpose is to further optimize the performance of the bolt connection and enhance the stability and reliability of the connection. The washer 11 can buffer, disperse pressure and increase friction between the nut 3 and the fastened object, effectively avoiding damage caused by the nut 3 directly contacting the surface of the fastened object, while improving the anti-loosening effect and ensuring the safe operation of the equipment or structure during long-term use.

[0065] Washer 11 has a certain degree of elasticity. When nut 3 is tightened, washer 11 can absorb part of the impact force generated by the tightening force, thus playing a buffering role. When equipment or structure is subjected to external forces such as vibration and impact, washer 11 can also effectively disperse energy, reducing the direct impact on nut 3 and the fastened object, and reducing the risk of nut 3 loosening. Washer 11 increases the contact area between nut 3 and the fastened object, making the pressure applied by nut 3 more evenly distributed on the surface of the fastened object, avoiding deformation or damage to the fastened object due to excessive local pressure, and improving the stability of the connection. The material and texture of washer 11 can increase the friction between it and nut 3 and the fastened object, to a certain extent preventing nut 3 from rotating due to vibration during use, further enhancing the anti-loosening performance of the bolt connection.

[0066] Example 4:

[0067] This embodiment provides an anti-loosening bolt, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0068] like Figure 2 and Figure 6 As shown, in this embodiment, the head of the bolt head 1 is provided with an internal hexagonal groove 12 for installing and removing the bolt using tools.

[0069] In this technical solution, an internal hexagonal groove 12 is provided on the head of the bolt head 1. The main purpose is to provide operators with a standardized, convenient and efficient operating interface so that torque can be applied accurately and stably during the installation and removal of the bolt, ensuring that the tightness of the bolt installation meets the requirements. At the same time, the operation can be completed smoothly when disassembly is required, improving work efficiency and reducing the risk of installation quality problems or damage caused by inconvenient operation, thus providing a guarantee for the correct use and maintenance of the anti-loosening bolt.

[0070] The shape of the hex socket 12 perfectly matches the hex wrench. When installing and removing bolts, the hex wrench can reach deep into the hex socket 12, achieving precise torque transmission and avoiding torque loss due to slippage or poor contact between the tool and the bolt head 1. This ensures that the bolt can be tightened or loosened according to the specified torque requirements, guaranteeing the stability and reliability of the bolt connection. Compared to other shapes of operating interfaces, the hex socket 12, when used with the hex wrench, offers greater flexibility, especially suitable for confined working environments. Operators can more easily hold and operate the tool, reducing operational difficulty and improving work efficiency. The design of the hex socket 12 ensures a tighter and more even contact between the tool and the bolt head 1, effectively dispersing force during operation, reducing wear and damage to the bolt head 1 surface, and extending the bolt's service life.

[0071] like Figure 1 and Figure 5 As shown, in this embodiment, the nut 3 is optimized by providing unlocking grooves 13 on both sides of its outer wall, which are used to disassemble and install the nut 3 using tools.

[0072] This technical solution provides a more convenient way to install and remove the nut 3. In actual operation, different work scenarios and tool configurations will vary. The unlocking slot 13 can be adapted to specific tools. When operators need to install or remove the nut 3, they can apply torque more easily with the help of tools that match the unlocking slot 13. Compared to conventional nuts 3, the operation is easier and greatly improves work efficiency. In some scenarios with limited space or high precision requirements, the installation and removal methods of ordinary nuts 3 may not meet the needs. The unlocking slot 13 allows operators to use smaller, more flexible tools to accurately operate the nut 3 even in narrow spaces, ensuring the smooth completion of bolt connection installation and removal. The unlocking slot 13, when closely matched with specific tools, enables more precise torque control. During installation, it ensures that the nut 3 is tightened to the specified torque, ensuring the reliability of the bolt connection; during disassembly, it avoids damage to the nut 3 or difficulty in disassembly due to improper torque, improving the controllability of the entire operation process. The design of the unlocking slot 13 allows the use of a variety of tools when installing and removing the nut 3. Whether in a professional mechanical repair shop or a general industrial production environment, suitable tools can be found to operate it, increasing the applicability of the nut 3 in different scenarios.

[0073] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A type of anti-loosening bolt, characterized in that, include: Bolt head (1); A stud (2) is disposed at one end of the bolt head (1); Nut (3), threaded on stud (2), the nut (3) is tightened to the object to be fastened; Channel (4), an axially extending channel (4) is provided inside the stud (2); An anti-detachment component (5) is disposed in the channel (4) and extends out of the channel (4) to abut against the nut (3). The anti-detachment component (5) includes: An internal thread (51) is provided on the inner diameter of the channel (4); The fastening bolt (52) is screwed into the channel (4), and the fastening bolt (52) engages with the internal thread (51) in the channel (4); The abutment plate (53) is set on the fastening bolt (52). After the nut (3) is tightened to the predetermined position, the fastening bolt (52) is tightened. The abutment plate (53) increases the clamping force of the nut (3), thereby restricting the position of the nut (3). The nut (3) has a connecting part (6) at its rear end. The connecting part (6) has a through groove (61) inside that communicates with the nut (3). The stud (2) passes through the through groove (61). The connecting part (6) has an external thread (62) at its outer end. The connecting part (6) has a screw cap (7) on it. The screw cap (7) is threadedly connected to the external thread (62) of the connecting part (6). The through groove (61) has a pressing block (8). One end of the pressing block (8) extends out of the through groove (61) and is located at the screw. Inside the cover (7), the extrusion block (8) extrudes the stud (2); the extrusion block (8) has a protruding plate (81) at one end inside the through groove (61), and an elastic element (82) is sleeved on the extrusion block (8). The elastic element (82) is located between the protruding plate (81) and the screw cover (7). After the screw cover (7) is tightened to the connecting part (6), it covers the extrusion block (8) and the elastic element (82). The elastic element (82) provides the extrusion block (8) with the elastic force to press against the stud (2) through the protruding plate (81).

2. The anti-loosening bolt according to claim 1, characterized in that, The screw cap (7) is provided with a connecting groove (9) that communicates with the through groove (61). The fastening bolt (52) passes through the channel (4) from the connecting groove (9) and the through groove (61). After the fastening bolt (52) is tightened with the internal thread (51) in the channel (4), the abutment plate (53) abuts against the screw cap (7), thereby abutting against the nut (3).

3. The anti-loosening bolt according to claim 1, characterized in that, The elastic element (82) is a compression spring.

4. The anti-loosening bolt according to claim 1, characterized in that, The nut (3) has a groove (10) on the front side inside, and a washer (11) is provided in the groove (10).

5. The anti-loosening bolt according to claim 1, characterized in that, The head of the bolt head (1) is provided with an internal hexagonal groove (12) for installing and removing the bolt using tools.

6. The anti-loosening bolt according to claim 1, characterized in that, The nut (3) has unlocking grooves (13) on both sides of its outer wall, which are used to disassemble and install the nut (3) using tools.

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