High-strength pipeline bolt fastener with anti-disassembly suite

Abstract

The invention relates to the technical field of fasteners for pipeline connection, and discloses a high-strength pipeline bolt fastener with an anti-disassembly suite, which comprises a nut, a first bolt is fixedly arranged at the bottom end of the nut, a second bolt is fixedly arranged at the bottom end of the first bolt, and a plurality of locking grooves are formed in the outer wall of the bottom end of the second bolt. The outer wall of the second bolt is in threaded connection with a conical expansion piece, a fixing ring is arranged on the outer wall of the conical expansion piece, the conical expansion piece is in a conical shape, a plurality of openings are formed in the outer wall of the conical expansion piece, and a nut is arranged on the outer wall of the fixing ring. Through fixed connection of the first bolt and the second bolt, threaded fit of the nut and the second bolt and cooperation of the conical expansion piece, the locking block and other components, the reliable anti-disassembly function is achieved, high-strength connection is guaranteed, and safety and reliability are both achieved. The problem that a traditional pipeline bolt fastener is poor in anti-disassembly effect is solved, and the defect of connection strength is overcome.

Description

Technical Field

[0001] The present invention relates to the technical field of fasteners for pipeline connection, and specifically to a high-strength pipeline bolt fastener with an anti-disassembly kit. Background Art

[0002] In today's industrial field, various pipeline systems are widely distributed and used to transport important substances such as oil, natural gas, chemical raw materials, and various industrial fluids. The reliable connection between pipelines mainly depends on bolt fasteners. Traditional pipeline bolt fasteners often have a relatively simple structure and only focus on achieving basic connection and fixing functions to ensure the sealing and stability of pipeline connections.

[0003] However, with the increasing complexity of the industrial environment, there are relatively high safety risks in some areas where pipelines are located. For example, in some energy infrastructure and chemical production plants, the bolt fasteners on pipelines are prone to unauthorized malicious disassembly. Once these bolts are illegally disassembled, it is very likely to cause loosening, leakage, etc. at the pipeline connection, which may lead to serious safety accidents, causing not only economic losses but also posing a major threat to the surrounding environment and the safety of personnel's lives. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the present invention provides a high-strength pipeline bolt fastener with an anti-disassembly kit, which solves the problem of poor anti-disassembly effect of traditional pipeline bolt fasteners.

[0005] To achieve the above objectives, the present invention is realized through the following technical solutions: A high-strength pipeline bolt fastener with an anti-disassembly kit includes a nut. A first bolt is fixedly arranged at the bottom end of the nut. A second bolt is fixedly arranged at the bottom end of the first bolt. A number of locking grooves are arranged on the outer wall of the bottom end of the second bolt. A conical expansion member is threadedly connected to the outer wall of the second bolt. A fixing ring is arranged on the outer wall of the conical expansion member. The conical expansion member has a conical shape. A number of openings are arranged on the outer wall of the conical expansion member. A nut is arranged on the outer wall of the fixing ring. A number of second springs are arranged at the bottom end of the inner wall of the nut. One end of the second spring is arranged on the outer wall of the conical expansion member. A locking block is arranged at the opening of the conical expansion member. A cavity is arranged inside the locking block. A second telescopic rod is arranged at one end of the locking block. A third spring is arranged on the outer wall of the second telescopic rod. One end of the second telescopic rod is arranged at the bottom end of the inner wall of the nut.

[0006] By adopting the above technical solutions, the high-strength pipeline bolt fastener has remarkable beneficial effects, strong anti-disassembly ability, and reliable axial and circumferential protection; high connection strength, good stability, and can cope with complex working conditions; convenient installation, controllable quality, and can meet the requirements of industrial pipeline systems for connection components.

[0007] Preferably, a hexagonal opening is provided on the upper surface of the nut, receiving cavities are symmetrically arranged on the lower surface of the nut, a first spring is arranged in the receiving cavity of the nut, one end of the first spring is provided with a first telescopic rod, the bottom end of the first telescopic rod is provided with a slider, the bottom end of the slider is slidably connected to a chute through a locking member, a plurality of locking grooves are arranged in the chute of the locking member, the slider slides with the locking grooves, and the bottom end of the locking member is arranged on the top end of the nut.

[0008] Preferably, a gasket is arranged on the lower surface of the nut, and the lower surface of the gasket is arranged above the locking member.

[0009] A preparation method of a high-strength pipeline bolt fastener with an anti-disassembly kit, which is used for the high-strength pipeline bolt fastener with an anti-disassembly kit, comprises the following steps:

[0010] S1. Processing and manufacturing: The nut is manufactured by forging or casting followed by finish machining processes, the hexagonal opening and the receiving cavity are machined, meanwhile, the first bolt and the second bolt are manufactured and connected by a suitable process, a locking groove is machined on the second bolt, a conical expansion member is manufactured by metal processing processes and a fixed ring matching structure is machined, and the nut is manufactured to ensure accurate inner wall dimensions;

[0011] S2. Component installation: The first spring is placed into the receiving cavity of the nut so that one end thereof fits against the bottom of the receiving cavity, the first telescopic rod is inserted into the other end of the first spring, and then the slider is installed at the bottom end of the first telescopic rod;

[0012] S3. Component assembly: The conical expansion member is fixed on the fixed ring, and the second spring is installed and is in a pre-compressed state;

[0013] S4. Preliminary assembly: The first bolt is inserted through the nut, the nut is connected to the first bolt, and the locking member is aligned with the top end of the nut;

[0014] S5. Assembly improvement: The gasket is placed on the lower surface of the nut so that it fits above the locking member, and the appearance of the fastener is inspected as a whole to confirm that the assembly is complete without omission.

[0015] Preferably, in S1, it further includes: preparing the first spring, the second spring and the third spring that meet requirements such as elastic coefficient, and processing and manufacturing the first telescopic rod, the second telescopic rod, the slider, the locking member, the chute and the gasket.

[0016] Preferably, in S2, it further includes: manually testing whether the first telescopic rod can flexibly extend and retract in the receiving cavity, and checking the connection stability between the slider and the first telescopic rod.

[0017] Preferably, in step S3, it further includes: installing a locking block at the opening of the conical expansion member, connecting the locking block to the second telescopic rod, installing the second telescopic rod with the third spring into the corresponding structure at the bottom end of the inner wall of the nut, and adjusting the third spring to a suitable compressed state.

[0018] Preferably, in step S4, it further includes: sliding the slider in the chute of the locking member to cooperate with the corresponding locking groove, so as to preliminarily position the nut and the screw cap in the axial direction.

[0019] Preferably, in step S5, it further includes: cleaning the debris on the surface of the fastener, preparing the corresponding quality inspection equipment and tools, and performing performance testing on the finished product to ensure that it meets the requirements.

[0020] Working principle: In the manufacturing stage, various components are carefully fabricated using processes such as forging, casting, and post-processing. Components such as a screw cap with a hexagonal opening and a receiving cavity, the first bolt and the second bolt connected together, and the latter with a locking groove, as well as a conical expansion member, a nut, etc. are made. At the same time, suitable springs, telescopic rods and other components are prepared to ensure that the dimensions of each component are accurate and the structure is reasonable, laying a foundation for subsequent assembly.

[0021] During installation, first place the first spring in the receiving cavity of the screw cap, insert the first telescopic rod and install the slider, and manually test its telescopic flexibility and connection stability. Then fix the conical expansion member on the fixing ring, install the pre-compressed second spring, install a locking block at the opening of the conical expansion member and connect the second telescopic rod with the third spring to the corresponding structure of the nut, and adjust the spring state.

[0022] During preliminary assembly, pass the first bolt through the nut, connect the nut and the first bolt and align the locking member with the top end of the nut. Push the slider to slide in the chute of the locking member through the first spring, and snap into the locking groove to achieve axial positioning of the nut and the screw cap.

[0023] Finally, for complete assembly, place a gasket on the lower surface of the screw cap to fit above the locking member. After cleaning the debris, use inspection equipment to perform performance testing on the finished product.

[0024] The present invention provides a high-strength pipeline bolt fastener with an anti-disassembly kit, having the following beneficial effects:

[0025] 1. Through the fixed connection between the first bolt and the second bolt, the threaded fit between the nut and the second bolt, and the cooperation of components such as the conical expansion member and the locking block, the present invention not only realizes a reliable anti-disassembly function, and the cooperation between the locking block and the locking groove can effectively prevent illegal disassembly; but also ensures high-strength connection, remaining stable under complex working conditions such as vibration and pressure, reducing the risk of pipeline leakage and failure, and combining safety and reliability. It solves the problem of poor anti-disassembly effect of traditional pipeline bolt fasteners and also solves the deficiency in connection strength.

[0026] 2. Through the cooperation mechanism between the slider and the locking groove, the present invention can effectively prevent illegal disassembly, ensuring the safety and integrity of pipeline connections. After normal installation, the relative positions of the nut and the bolt can be firmly locked, preventing the nut from loosening or being disassembled due to external forces during the use of the entire bolt fastener, thus ensuring the stability of pipeline connections. This solves the problem of the single anti-disassembly function of traditional pipeline bolt fasteners.

[0027] 3. Through precise processing and manufacturing, the present invention realizes the stable adaptation of each component to ensure structural stability, can reliably withstand external forces, and has axial and circumferential anti-disassembly functions to ensure pipeline safety. Moreover, under complex working conditions, it can still maintain a high-strength connection relying on tight fitting and gasket buffering, ensuring the stable operation of the pipeline. This solves the problems of insufficient machining accuracy and poor adaptability of past pipeline bolt fasteners.

[0028] 4. Through gasket placement and appearance inspection, the present invention ensures structural optimization and integrity. After debris cleaning and performance testing, the product quality is ensured, enabling it to operate stably under complex working conditions and meeting the high-quality and high-performance requirements of industrial pipeline systems for connection components. This solves the problems of structural integrity and poor component contact in past assemblies. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a front-side three-dimensional schematic diagram of a high-strength pipeline bolt fastener with an anti-disassembly kit proposed by the present invention;

[0030] Figure 2 is a three-dimensional sectional view of a partial structure at the nut of a high-strength pipeline bolt fastener with an anti-disassembly kit proposed by the present invention;

[0031] Figure 3 is a three-dimensional sectional view of a partial structure at the nut of a high-strength pipeline bolt fastener with an anti-disassembly kit proposed by the present invention;

[0032] Figure 4 is a three-dimensional schematic diagram of a partial structure at bolt two of a high-strength pipeline bolt fastener with an anti-disassembly kit proposed by the present invention;

[0033] Figure 5 is a three-dimensional sectional view of a partial structure at the conical expansion part of a high-strength pipeline bolt fastener with an anti-disassembly kit proposed by the present invention;

[0034] Figure 6 is a three-dimensional schematic diagram of a partial structure at the lock block of a high-strength pipeline bolt fastener with an anti-disassembly kit proposed by the present invention;

[0035] Figure 7 is a flow chart of the preparation method of a high-strength pipeline bolt fastener with an anti-disassembly kit proposed by the present invention.

[0036] Among them, 1. Nut; 2. Hexagonal opening; 3. Locking member; 4. Nut; 5. First spring; 6. First telescopic rod; 7. Slide block; 8. Slide groove; 9. Fixed ring; 10. First bolt; 11. Gasket; 12. Locking groove; 13. Second bolt; 14. Conical expansion member; 15. Second spring; 16. Locking block; 17. Locking slot; 18. Second telescopic rod; 19. Third spring; 20. Accommodating cavity. Specific implementation mode

[0037] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the drawings of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0038] Please refer to the attached Figure 1 - attached Figure 2 、 attached Figure 4 - attached Figure 6 The embodiment of the present invention provides a high-strength pipeline bolt fastener with an anti-disassembly kit, including a nut 1. A first bolt 10 is fixedly arranged at the bottom end of the nut 1. A second bolt 13 is fixedly arranged at the bottom end of the first bolt 10. A plurality of locking slots 17 are arranged on the outer wall of the bottom end of the second bolt 13. A conical expansion member 14 is threadedly connected to the outer wall of the second bolt 13. A fixed ring 9 is arranged on the outer wall of the conical expansion member 14. The conical expansion member 14 is in a conical shape. A plurality of openings are arranged on the outer wall of the conical expansion member 14. A nut 4 is arranged on the outer wall of the fixed ring 9. A plurality of second springs 15 are arranged at the bottom end of the inner wall of the nut 4. One end of the second spring 15 is arranged on the outer wall of the conical expansion member 14. A locking block 16 is arranged at the opening of the conical expansion member 14. A cavity is arranged inside the locking block 16. A second telescopic rod 18 is arranged at one end of the locking block 16. A third spring 19 is arranged on the outer wall of the second telescopic rod 18. One end of the second telescopic rod 18 is arranged at the bottom end of the inner wall of the nut 4.

[0039] Specifically, when the bolt fastener is normally installed, by acting on the nut 1 with a tool, the first bolt 10 and the second bolt 13 are driven to rotate. The threaded fit between the first bolt 10 and the nut 4 causes it to gradually screw into the nut 4. During this process, the conical expansion member 14 moves in the nut 4 as the second bolt 13 is screwed in. Since the conical expansion member 14 is in a conical shape and a plurality of openings are arranged on its outer wall, when it is restricted by the inner wall of the nut 4 and the action of the second spring 15, it will have a radial expansion tendency.

[0040] One end of the lock block 16 is connected to the bottom end of the inner wall of the nut 4 through the second expansion rod 18, and a third spring 19 is sleeved on the outer wall of the second expansion rod 18. When the conical expansion part 14 expands, the space formed at its opening allows the lock block 16 to pass through without interference. As the second bolt 13 is continuously tightened, the conical expansion part 14 is expanded to the maximum extent. At this time, under the certain elastic action of the third spring 19 and its own position relationship, the lock block 16 will be stuck into the lock groove 17 on the outer wall of the bottom end of the second bolt 13.

[0041] Once the lock block 16 is stuck into the lock groove 17, the circumferential locking between the second bolt 13 and the nut 4 is realized. At this time, if an attempt is made to reverse the rotation of the nut 1 to disassemble the bolt fastener, the lock block 16 is blocked by the lock groove 17. Considering its connection with components such as the conical expansion part 14 and the nut 4, it is difficult to rotate the nut 1, achieving the anti-disassembly purpose.

[0042] In terms of connection strength, the fixed connection between the first bolt 10 and the second bolt 13 forms a stable bolt structure that can withstand large tensile and compressive forces. The threaded connection between the nut 4 and the first bolt 10, combined with the fact that the conical expansion part 14 is closely attached to the second bolt 13 after being expanded, increases the friction force. This synergistic effect enables the entire connection structure to maintain a high-strength connection in the face of complex working conditions such as vibration, impact, and internal pressure of the pipeline, avoiding loosening and falling off.

[0043] Through the fixed connection between the first bolt 10 and the second bolt 13, the threaded fit between the nut 4 and the second bolt 13, and the coordination of components such as the conical expansion part 14 and the lock block 16, both a reliable anti-disassembly function is achieved. The cooperation between the lock block 16 and the lock groove 17 can effectively prevent illegal disassembly; and a high-strength connection is ensured, remaining stable under complex working conditions such as vibration and pressure, reducing the risk of pipeline leakage and failure, and having both safety and reliability. It solves the problem of poor anti-disassembly effect of traditional pipeline bolt fasteners and also solves the deficiency in connection strength.

[0044] Please refer to the appendix Figure 1 - appendix Figure 3 On the upper surface of the nut 1, a hexagonal opening 2 is provided. On the lower surface of the nut 1, receiving cavities 20 are symmetrically arranged. Inside the receiving cavity 20 of the nut 1, a first spring 5 is provided. One end of the first spring 5 is provided with a first expansion rod 6. The bottom end of the first expansion rod 6 is provided with a slider 7. The bottom end of the slider 7 is slidably connected to a chute 8 through a locking member 3. A number of locking grooves 12 are provided in the chute 8 of the locking member 3. The slider 7 slides with the locking grooves 12. The bottom end of the locking member 3 is arranged on the top end of the nut 4.

[0045] Specifically, during the installation process, when the nut 1 starts to be screwed, the nut 1 is threadedly connected to the nut 4 through the first bolt 10 and the second bolt 13. As the screwing progresses, the nut 1 gradually approaches the nut 4. At this time, the first spring 5 in the accommodating cavity 20 is in a compressed state, providing elastic force for the first telescopic rod 6.

[0046] The slider 7 at the bottom end of the first telescopic rod 6 always has a tendency to slide into the chute 8 of the locking member 3 under the action of the first spring 5. When the nut 1 is screwed to the appropriate position, the slider 7 will correspond to the locking groove 12 in the chute 8 of the locking member 3. Due to the elastic force of the first spring 5, the slider 7 will slide into the locking groove 12.

[0047] Once the slider 7 slides into the locking groove 12, the locking of the nut 1 and the nut 4 in the axial direction is achieved. At this time, if someone attempts to unscrew the nut 1 in the reverse direction to disassemble the bolt fastener, the slider 7 will be blocked by the locking groove 12, making it difficult to rotate the nut 1. This is because the cooperation between the slider 7 and the locking groove 12 restricts the axial movement of the nut 1, thereby preventing the rotation of the nut 1 and realizing the anti-disassembly function.

[0048] Through the cooperation mechanism between the slider 7 and the locking groove 12, illegal disassembly behaviors can be effectively prevented, ensuring the safety and integrity of the pipeline connection. After the normal installation is completed, the relative positions of the nut 1 and the nut 4 can be firmly locked, so that the entire bolt fastener will not cause the nut 1 to loosen or be disassembled due to external forces during use, ensuring the stability of the pipeline connection. It solves the problem of the traditional pipeline bolt fastener being single in terms of anti-disassembly.

[0049] Please refer to the appendix Figure 2 - appendix Figure 3 The lower surface of the nut 1 is provided with a gasket 11, and the lower surface of the gasket 11 is arranged above the locking member 3.

[0050] Specifically, after the bolt fastener is installed, the gasket 11 is located between the lower surface of the nut 1 and the locking member 3. When the bolt bears various external forces (such as pressure, tension, vibration, etc.) from the pipeline system, the gasket 11 plays a role in buffering and evenly transmitting pressure.

[0051] Due to the certain elasticity and flexibility of the gasket 11, it can fill the possible small gaps between the lower surface of the nut 1 and the locking member 3, making the contact between the two more tight and uniform. When an external force acts on the nut 1, the gasket 11 first bears part of the pressure and evenly disperses it to the locking member 3, avoiding local stress concentration. This helps to maintain the stable cooperation relationship between the slider 7 and the locking groove 12, preventing deformation of the slider 7 or the locking groove 12 due to excessive local stress, thereby affecting the anti-disassembly function and the stability of the connection.

[0052] Through the gasket 11, the effects of optimizing the force distribution and enhancing the structural stability are achieved. It can effectively avoid problems such as wear and deformation caused by uneven force between the nut 1 and the locking part 3, and extend the service life of the bolt fastener. At the same time, it ensures the reliable cooperation between the slider 7 and the locking groove 12, further consolidates the anti-disassembly function, enables the bolt fastener to maintain a good working state under complex working conditions, and ensures the safety and stability of the pipeline connection. It solves the problem that traditional bolt fasteners are prone to uneven force.

[0053] Please refer to the attached Figure 7 , a preparation method of a high-strength pipeline bolt fastener with an anti-disassembly kit, for a high-strength pipeline bolt fastener with an anti-disassembly kit, including the following steps:

[0054] S1. Processing and manufacturing: The nut 1 is made by forging or casting followed by finish machining. The hexagonal opening 2 and the receiving cavity 20 are machined. At the same time, the bolt one 10 and the bolt two 13 are made and connected by a suitable process. The locking groove 17 is machined on the bolt two 13. The conical expansion part 14 is manufactured by metal processing technology and the fitting structure of the fixing ring 9 is machined. The nut 4 is made to ensure accurate inner wall dimensions.

[0055] In the above S1, it also includes: preparing the first spring 5, the second spring 15, and the third spring 19 that meet requirements such as the elastic coefficient, and machining and manufacturing the first telescopic rod 6, the second telescopic rod 18, the slider 7, the locking part 3, the sliding groove 8, and the gasket 11.

[0056] Specifically, using the forging or casting followed by finish machining process, first roughly shape the nut by forging or casting to give it a certain strength foundation. In the subsequent finish machining process, according to the design requirements, use high-precision machine tools to accurately machine the hexagonal opening 2 on the upper surface of the nut 1 to facilitate subsequent screwing operations with corresponding tools; at the same time, accurately machine the receiving cavity 20 on the lower surface of the nut 1, and strictly control parameters such as the size, shape, and depth of the receiving cavity 20 to provide an accurately adapted space for subsequent installation of components such as the first spring 5 and the first telescopic rod 6.

[0057] First, use the turning process to machine the raw material into a bar stock that meets the design dimensions, and then use processes such as thread rolling to make the threaded parts of the bolt one 10 and the bolt two 13 on the bar stock respectively, ensuring that parameters such as the pitch and tooth profile of the thread are accurate. After that, use reliable connection methods such as welding or one-piece forming to firmly connect the two together to form an integral bolt structure to meet the requirements of withstanding external forces such as tension and pressure in pipeline connection. At a specific part of the bolt two 13, the locking groove 17 is machined by machining methods such as milling, and the width, depth, and quantity of the locking groove 17 are accurately controlled so that it can accurately cooperate with subsequent components such as the locking block 16 to perform corresponding functions.

[0058] Obtain the blank of the tapered expansion part 14 through forging or casting, and then perform finish machining operations such as turning to machine its outer shape into a tapered shape that meets the requirements, ensuring the accuracy of the taper of the taper to guarantee the expected expansion effect during subsequent installation. At the same time, according to the design, several openings are made on its outer wall through processes such as cutting, and structures that cooperate with the fixing ring 9 are precisely machined, such as grooves, bosses, etc., so that the fixing ring 9 can be stably installed on the outer wall of the tapered expansion part 14, and there will be no looseness, displacement, etc. between the two, ensuring the stability and functionality of the entire structure.

[0059] When manufacturing the nut 4, high-precision metal processing techniques are also used. Through operations such as turning, parameters such as the inner diameter, outer diameter, thickness, and thread specifications of the nut 4 are strictly controlled to ensure the accuracy of its inner wall dimensions, enabling smooth and tight thread fitting between the nut 4 and the bolt two 13, laying a foundation for subsequent installation and the stable connection of the entire bolt fastener.

[0060] Determine parameters such as the elastic coefficient, length, and wire diameter of each spring according to the design requirements, select suitable spring materials, and manufacture springs one 5, springs two 15, and springs three 19 that meet the requirements of the elastic coefficient through professional spring manufacturing processes such as spring coiling, quenching, and tempering. During the manufacturing process, strictly control the process parameters of each process and accurately measure the dimensions of the springs to ensure that the springs can provide stable and design-expected elastic force after being assembled to the corresponding positions.

[0061] Select a metal material with a certain strength and toughness, and manufacture the rod body part of the telescopic rod through processing techniques such as cutting and grinding to ensure that the dimensional accuracy of the outer diameter, length, etc. of the rod body meets the requirements. At the same time, the telescopic part of the telescopic rod is finely processed. For example, appropriate fit tolerances are used to ensure that the telescopic rod can flexibly expand and contract at the corresponding installation positions and will not experience jamming, shaking, etc. during the expansion and contraction process, enabling it to cooperate with components such as springs to play corresponding roles. For example, the telescopic rod one 6 cooperates with the spring one 5 to achieve the expansion and contraction movement of the slider 7, and the telescopic rod two 18 cooperates with the spring three 19 to control the expansion and contraction action of the lock block 16.

[0062] When manufacturing the slider 7, its external dimensions are processed according to the design requirements to ensure that it can slide smoothly within the chute 8 of the locking member 3. At the same time, the connection part between the slider 7 and the first telescopic rod 6 is ensured to have a firm structure so as to stably transmit the elastic force from the first spring 5. For the locking member 3, its overall structure is created through methods such as casting, forging and then precision machining. The chute 8 is precisely machined on it, and parameters such as the width, depth, length and smoothness of the inner wall of the chute 8 are strictly controlled, so that the friction force is moderate when the slider 7 slides therein and it can accurately cooperate with the locking groove 12 provided in the chute 8. The locking groove 12 is machined in the chute 8 by processes such as milling according to parameters such as the spacing and depth required by the design, providing a reliable locking position for the slider 7.

[0063] According to the design purpose of the gasket 11, a suitable material with elasticity and buffering performance is selected, and the gasket 11 meeting the dimensional requirements is made through processes such as stamping and cutting, ensuring that its thickness is uniform and its external dimensions are adapted to the contact area of the lower surface of the nut 1 and the upper part of the locking member 3, so as to effectively fill the gap between the two after installation, evenly disperse the pressure, and play a buffering and protective role.

[0064] Through precise processing and manufacturing, the adaptation and stability of each component are realized to ensure the structural stability, which can reliably withstand external forces. At the same time, it has axial and circumferential anti-disassembly functions to ensure the pipeline safety, and still maintains a high-strength connection by relying on the close fit and the buffering of the gasket 11 under complex working conditions, ensuring the stable operation of the pipeline. It solves the problems of insufficient machining accuracy and poor adaptability of the past pipeline bolt fasteners.

[0065] S2. Component installation: Place the first spring 5 into the receiving cavity 20 of the nut 1, make one end of it fit with the bottom of the receiving cavity 20, insert the first telescopic rod 6 into the other end of the first spring 5, and then install the slider 7 at the bottom end of the first telescopic rod 6.

[0066] What is also included in S2 is: manually testing whether the first telescopic rod 6 can flexibly extend and retract within the receiving cavity 20, and checking the connection stability between the slider 7 and the first telescopic rod 6.

[0067] Specifically, when performing component installation, first place the first spring 5 into the receiving cavity 20 of the nut 1. This operation is based on the matching of the size design of the receiving cavity 20 and the external dimensions of the first spring 5. Making one end of the first spring 5 fit with the bottom of the receiving cavity 20 is to provide a stable support basis for the first spring 5, so that the first spring 5 can rely on this bottom to undergo elastic deformation according to the design requirements when being subjected to external forces subsequently.

[0068] Next, insert the first telescopic rod 6 into the other end of the first spring 5. At this time, the first spring 5 is in a natural state or slightly compressed state. After the first telescopic rod 6 is inserted, it fits tightly with the inner diameter of the first spring 5. When the first spring 5 expands or contracts, it can drive the first telescopic rod 6 to move synchronously. Moreover, the length and structure design of the first telescopic rod 6 enable it to expand and contract within the space defined by the receiving cavity 20, without the situation of being unable to work properly due to being too long or too short, nor being stuck in the receiving cavity 20 and unable to move due to an overly large outer diameter.

[0069] Then, install the slider 7 at the bottom end of the first telescopic rod 6. The slider 7 and the first telescopic rod 6 are firmly connected through a specific connection structure (such as a card slot, thread, etc., depending on the specific design), ensuring that when the first spring 5 expands and contracts and the overall structure is stressed later, the slider 7 can move together with the first telescopic rod 6 without falling off or loosening, thus ensuring the coherence and coordination of the entire structure.

[0070] Manually apply an external force to the first telescopic rod 6. The magnitude and direction of this external force simulate the acting forces generated by factors such as the rotation of the nut 1 and external forces on the pipeline during actual use. By manually pushing or pulling the first telescopic rod 6, observe its movement in the receiving cavity 20 to determine whether it can expand and contract flexibly. If the first telescopic rod 6 can smoothly expand and contract in the receiving cavity 20 under the elastic force of the first spring 5, it indicates that the parameters such as the clearance and friction coefficient between it and the inner wall of the receiving cavity 20 and the first spring 5 are reasonable and can meet the requirements for subsequent function realization; conversely, if there are situations such as jamming or blocking, it indicates that there may be problems such as unreasonable dimensional tolerances and surface roughness not meeting the requirements, which will affect the normal operation of the entire structure.

[0071] Check the connection between the two by observing, slightly shaking, and appropriately applying a certain pulling or pressing force. Visually check whether the connection part is tightly fitted and whether there are obvious gaps or signs of loosening. Then gently shake the slider 7 by hand to feel whether it will displace relative to the first telescopic rod 6. If there is no obvious shaking or displacement, it indicates a firm connection; then appropriately apply a certain external force to pull or press the slider 7 to simulate the external force situation that may be encountered during actual use. If the slider 7 can still be firmly connected to the first telescopic rod 6 without falling off or separating, it proves that its connection structure can withstand the corresponding external force and ensure that the function will not fail due to loose connection during subsequent use.

[0072] Through the standard operations and corresponding test inspections in the component installation steps, the reliable collaborative work of components is achieved, laying a foundation for the anti-disassembly function of bolt fasteners. At the same time, quality problems can be detected in a timely manner, improving the overall quality of the product and ensuring its reliability and stability in actual applications. It solves the problem of functional obstacles in traditional structures due to the lack of installation control and test inspection.

[0073] S3. Component assembly: Fix the conical expansion part 14 on the fixed ring 9, install the second spring 15 and keep it in a pre-compressed state.

[0074] The S3 also includes: Install a lock block 16 at the opening of the conical expansion part 14, connect the lock block 16 with the second telescopic rod 18, install the second telescopic rod 18 with the third spring 19 into the corresponding structure at the bottom end of the inner wall of the nut 4, and adjust the third spring 19 to a suitable compression state.

[0075] Specifically, first, fix the conical expansion part 14 on the fixed ring 9. The fixed ring 9 has a shape and size adapted to the outer wall of the conical expansion part 14. For example, it may be through the snap-fit of a slot and a boss, or by using a stable connection method such as welding (depending on the specific design), so that the conical expansion part 14 can firmly adhere to the fixed ring 9 and there will be no relative displacement or loosening during subsequent use, ensuring that the two work as a whole.

[0076] Then install the second spring 15 and keep it in a pre-compressed state. There is a special installation position for the second spring 15 at the bottom end of the inner wall of the nut 4, and its size can just accommodate one end of the second spring 15, while the other end of the second spring 15 is in contact with the outer wall of the conical expansion part 14. When the second spring 15 is placed, it is artificially compressed to a certain extent to store elastic potential energy. The degree of this pre-compression is precisely designed, taking into account factors such as the expansion space requirements of the conical expansion part 14 during the screwing of the second bolt 13 into the nut 4 and the magnitude of the elastic force to be provided. In this way, in subsequent operations, the second spring 15 can rely on its own elastic restoring force to exert an outward thrust on the conical expansion part 14, prompting it to perform corresponding actions to achieve specific functions.

[0077] Install the lock block 16 at the opening of the conical expansion part 14. The opening size and shape of the conical expansion part 14 are matched with the outer shape of the lock block 16, so that the lock block 16 can be exactly placed at the opening without jamming or failing to be installed in place.

[0078] Then connect the lock block 16 with the second telescopic rod 18 to ensure that the movement of the lock block 16 can drive the second telescopic rod 18 to move synchronously, and the connection between the two is firm and reliable and will not be easily disconnected during the stress process.

[0079] After that, the telescopic rod two 18 with the spring three 19 is installed into the corresponding structure at the bottom end of the inner wall of the nut 4. The corresponding structure at the bottom end of the inner wall of the nut 4 has a shape and size adapted to the telescopic rod two 18, which can accurately accommodate and position the telescopic rod two 18, enabling it to perform telescopic activities within this limited space. The spring three 19 is installed on the outer wall of the telescopic rod two 18, with one end in contact with the side where the lock block 16 is located and the other end in contact with the corresponding position on the inner wall of the nut 4. During installation, the spring three 19 is adjusted to be in a suitable compressed state through adjustment. This suitable compressed state is also carefully designed, taking into account the telescopic requirements of the lock block 16 in different situations and its cooperation with the locking groove 17 on the bolt two 13, etc. When subjected to an external force, the spring three 19 can use its elastic deformation to push or pull the lock block 16, enabling it to accurately engage or disengage from the locking groove 17, thereby realizing the corresponding functions.

[0080] Through this component assembly step, the close functional cooperation of each component is realized, the anti-disassembly function of the bolt fastener is enhanced, and at the same time, the entire structure is made more stable, capable of maintaining the relative positions of each component stable under complex working conditions, and ensuring the stability and reliability of the pipeline connection. It solves the problems of imperfect anti-disassembly function and insufficient structural stability existing in the previous pipeline bolt fasteners.

[0081] S4. Preliminary assembly: Insert the bolt one 10 into the nut 4, connect the nut 1 to the bolt one 10, and align the locking member 3 with the top end of the nut 4.

[0082] What is also included in S4 is: By sliding the slider 7 in the sliding groove 8 of the locking member 3, it is made to cooperate with the corresponding locking groove 12, so as to preliminarily position the nut 1 and the nut 4 in the axial direction.

[0083] Specifically, first, the bolt one 10 is inserted into the nut 4, which is realized based on the precise thread fit design between the outer diameter of the bolt one 10 and the inner diameter of the nut 4. The thread specification of the nut 4 is completely matched with the thread part of the bolt one 10, and its pitch, thread profile and other parameters are the same, enabling the bolt one 10 to smoothly screw into the nut 4 along the thread. During the screwing process, relying on the mutual engagement between the threads, the relative positions of the two in the axial direction can be adjusted, laying a foundation for the subsequent fastening installation.

[0084] Then, the nut 1 is connected to the bolt one 10, the nut 1 is firmly installed at one end of the bolt one 10, and the locking member 3 is aligned with the top end of the nut 4. This alignment is ensured by the axial positioning of the entire bolt structure and the dimensional accuracy during the processing of each component, ensuring that the locking member 3 can accurately be in the corresponding position at the top end of the nut 4, and making preparations for the subsequent cooperation between the slider 7 and the locking groove 12.

[0085] After the relative positions of the above components are prepared, the preliminary positioning of the nut 1 and the nut 4 in the axial direction is achieved by sliding the slider 7 in the chute 8 of the locking member 3. The slider 7 is located at the bottom end of the first telescopic rod 6, and its outer dimensions are adapted to the chute 8 of the locking member 3, and it can slide smoothly in the chute 8. A plurality of locking grooves 12 are provided in the chute 8 of the locking member 3, and these locking grooves 12 have specific spacings and depths in the chute 8, and are precisely machined according to the design requirements.

[0086] When the nut 1 gradually approaches the nut 4, the first spring 5 in the accommodating cavity 20 will be compressed or relaxed correspondingly according to the change in the distance between the two. Under the elastic force of the first spring 5, the first telescopic rod 6 and the slider 7 at its bottom end are pushed to move in the chute 8. As the slider 7 moves, when it coincides with the corresponding locking groove 12, due to the continuous elastic force applied by the first spring 5, the slider 7 will slide into the locking groove 12, thereby restricting the relative movement of the nut 1 and the nut 4 in the axial direction and achieving the preliminary positioning of the two. This positioning method utilizes the elastic potential energy of the first spring 5 and the mechanical cooperation between the slider 7 and the locking groove 12, effectively preventing the axial displacement of the nut 1 under normal circumstances without external interference, and providing guarantee for the installation stability of the entire bolt fastener.

[0087] Through the preliminary assembly step, the preliminary positioning of the nut and the nut 4 in the axial direction is achieved, ensuring the relative positions of the components are stable during the installation process, laying a good foundation for subsequent use, and at the same time playing an auxiliary anti-disassembly role, enhancing the overall anti-disassembly ability, and ensuring the safety of pipeline connection. It solves the problem of the single anti-disassembly function of traditional pipeline bolt fasteners.

[0088] S5. Assembly completion: Place the gasket 11 on the lower surface of the nut 1 so that it fits above the locking member 3, and check the appearance of the fastener as a whole to confirm that the assembly is complete without omission.

[0089] The S5 also includes: cleaning the debris on the surface of the fastener, preparing the corresponding quality inspection equipment and tools, and performing performance testing on the finished product to ensure that it meets the requirements.

[0090] Specifically, first, place the gasket 11 on the lower surface of the nut 1 and make it fit above the locking member 3. This is achieved based on the design that the shape and size of the gasket 11 are adapted to the contact areas of the lower surface of the nut 1 and above the locking member 3. The area of the gasket 11 can completely cover the corresponding contact parts of the nut 1 and the locking member 3, and its thickness is considered. After placement, it can effectively fill the possible small gaps between the two to ensure a tight fit. After the gasket 11 is placed in position, visually check the appearance of the entire fastener carefully from all angles by hand. According to the pre-set assembly drawing and the standard shapes of each component, check the installation positions, connection conditions, etc. of each component one by one to determine whether there are missing components, misalignment during installation, or obvious damage on the surface, etc., so as to confirm that the assembly is complete without omission and ensure that the entire fastener meets the assembly requirements in terms of appearance.

[0091] Then, perform the operation of cleaning the debris on the surface of the fastener. This is because in the previous processing, assembly and other links, there may be debris such as metal chips and oil stains attached to the surface of the fastener, and the existence of these debris may affect the subsequent use performance of the fastener and the accuracy of the test results. Use cleaning tools such as brushes and wiping cloths to clean each surface of the fastener in a certain order and method to remove these possible interfering debris and keep the surface of the fastener clean.

[0092] After that, prepare the corresponding quality inspection equipment and tools. These equipment and tools are selected according to the various performance indicators required for the inspection of this high-strength pipeline bolt fastener. For example, use measuring tools such as calipers and micrometers to detect the dimensional accuracy of each component to see if it is within the tolerance range specified in the design; use a hardness tester to detect the hardness of key components such as bolts and nuts 4 to ensure that they have sufficient strength to withstand the external force during the operation of the pipeline; use tools such as torque wrenches to detect the torque situation after the nut 1 is tightened to judge the tightness of its connection, etc. According to the established inspection standards and procedures, conduct a comprehensive performance inspection on the finished product, compare and analyze the detected data with the required performance indicators to ensure that it meets the corresponding requirements in terms of strength, anti-disassembly function, connection stability, etc., and ensure that the product quality is reliable and can play a normal role in the actual pipeline connection application scenario.

[0093] The placement of the gasket 11 and the visual inspection of the appearance ensure the structural optimization and integrity. After debris cleaning and performance inspection, the product quality is ensured, enabling it to operate stably under complex working conditions and meet the requirements of high quality and high performance for connection components in the industrial pipeline system. It solves the problems of structural integrity and poor contact of components existing in past assemblies.

[0094] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-strength pipeline bolt fastener with an anti-disassembly kit, including a nut (1), characterized in that: A bolt one (10) is fixedly arranged at the bottom end of the nut (1), a bolt two (13) is fixedly arranged at the bottom end of the bolt one (10), a plurality of locking grooves (17) are arranged on the outer wall of the bottom end of the bolt two (13), a conical expansion part (14) is threadedly connected to the outer wall of the bolt two (13), a fixing ring (9) is arranged on the outer wall of the conical expansion part (14), the outer shape of the conical expansion part (14) is conical, a plurality of openings are arranged on the outer wall of the conical expansion part (14), a nut (4) is arranged on the outer wall of the fixing ring (9), a plurality of spring two (15) are arranged at the bottom end of the inner wall of the nut (4), one end of the spring two (15) is arranged on the outer wall of the conical expansion part (14), a locking block (16) is arranged at the opening of the conical expansion part (14), a cavity is arranged inside the locking block (16), a telescopic rod two (18) is arranged at one end of the locking block (16), a spring three (19) is arranged on the outer wall of the telescopic rod two (18), and one end of the telescopic rod two (18) is arranged at the bottom end of the inner wall of the nut (4).

2. The high-strength pipeline bolt fastener with an anti-disassembly kit according to claim 1, characterized in that: A hexagonal opening (2) is arranged on the upper surface of the nut (1), receiving cavities (20) are symmetrically arranged on the lower surface of the nut (1), a spring one (5) is arranged inside the receiving cavity (20) of the nut (1), a telescopic rod one (6) is arranged at one end of the spring one (5), a sliding block (7) is arranged at the bottom end of the telescopic rod one (6), the bottom end of the sliding block (7) is slidably connected to a sliding groove (8) through a locking member (3), a plurality of locking grooves (12) are arranged inside the sliding groove (8) of the locking member (3), the sliding block (7) slides with the locking grooves (12), and the bottom end of the locking member (3) is arranged at the top end of the nut (4).

3. The high-strength pipeline bolt fastener with an anti-disassembly kit according to claim 1, characterized in that: A gasket (11) is arranged on the lower surface of the nut (1), and the lower surface of the gasket (11) is arranged above the locking member (3).

4. A preparation method of a high-strength pipeline bolt fastener with an anti-disassembly kit, characterized in that For a high-strength pipeline bolt fastener with an anti-disassembly kit according to any one of claims 1-3, it includes the following steps: S1. Processing and manufacturing: The nut (1) is manufactured by a forging or casting and then finish machining process, the hexagonal opening (2) and the receiving cavity (20) are machined, at the same time, the bolt one (10) and the bolt two (13) are manufactured and connected by a suitable process, the locking groove (17) is machined on the bolt two 1(3), the conical expansion part (14) is manufactured by a metal processing process and the matching structure of the fixing ring (9) is machined, and the nut (4) is manufactured to ensure the accuracy of the inner wall dimensions; S2. Component installation: The spring one (5) is placed into the receiving cavity (20) of the nut (1) so that one end thereof fits against the bottom of the receiving cavity (20), the telescopic rod one (6) is inserted into the other end of the spring one (5), and then the sliding block (7) is installed at the bottom end of the telescopic rod one (6); S3. Component assembly: The conical expansion part (14) is fixed on the fixing ring (9), and the spring two (15) is installed and is in a pre-compressed state; S4. Preliminary assembly: The bolt one (10) is inserted through the nut (4), the nut (1) is connected to the bolt one (10), and the locking member (3) is aligned with the top end of the nut (4); S5. Assembly Completion: Place the gasket (11) on the lower surface of the nut (1) so that it fits above the locking member (3). Check the appearance of the fastener as a whole to confirm that the assembly is complete without omission.

5. The preparation method of a high-strength pipeline bolt fastener with an anti-disassembly kit according to claim 4, characterized in that, In S1, it also includes: Prepare the first spring (5), the second spring (15), and the third spring (19) that meet the requirements such as elastic coefficient, and process and manufacture the first telescopic rod (6), the second telescopic rod (18), the slider (7), the locking member (3), the chute (8), and the gasket (11).

6. The preparation method of a high-strength pipeline bolt fastener with an anti-disassembly kit according to claim 4, characterized in that, In S2, it also includes: Manually test whether the first telescopic rod (6) can flexibly extend and retract in the receiving cavity (20), and check the connection stability between the slider (7) and the first telescopic rod (6).

7. The preparation method of a high-strength pipe bolt fastener with an anti-disassembly kit according to claim 4, characterized in that, In S3, it also includes: Install a lock block (16) at the opening of the conical expansion member (14), connect the lock block (16) to the second telescopic rod (18), install the second telescopic rod (18) with the third spring (19) into the corresponding structure at the bottom end of the inner wall of the nut (4), and adjust the third spring (19) to an appropriate compressed state.

8. The preparation method of a high-strength pipe bolt fastener with an anti-disassembly kit according to claim 4, characterized in that, In S4, it also includes: Slide the slider (7) in the chute (8) of the locking member (3) so that it cooperates with the corresponding locking groove (12), and preliminarily position the nut (1) and the nut (4) in the axial direction.

9. The preparation method of a high-strength pipeline bolt fastener with an anti-disassembly kit according to claim 4, characterized in that, In S5, it also includes: Clean the debris on the surface of the fastener, prepare the corresponding quality inspection equipment and tools, and perform performance testing on the finished product to ensure that it meets the requirements.

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