Bolt torque range-based checking method and device, and electronic device

Abstract

The application provides a bolt torque range-based checking method and device and electronic equipment, relates to the technical field of bolt torque checking, and comprises the following steps: determining the minimum torque of a bolt based on load requirements and / or anti-loosening requirements; determining the maximum torque of the bolt based on surface pressure requirements and / or strength requirements; adjusting the minimum torque and the maximum torque according to temperature requirements to determine the torque range of the bolt; and checking the application of the bolt based on the torque range, so that the technical problems of design redundancy and low reliability of the current bolt are relieved.

Description

Technical Field

[0001] This invention relates to the technical field of bolt torque verification, and in particular to a verification method, apparatus and electronic device based on bolt torque range. Background Technology

[0002] In the industry, the range of bolt torque is generally determined based on the bolt's load condition, the crimping condition of the connected parts, or the recommended torque corresponding to the bolt size in national standards. This method of torque determination lacks systematic and detailed design torque analysis, leading to potential consequences such as design redundancy and reduced reliability. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide a verification method, device and electronic device based on bolt torque range to alleviate the technical problem of current bolts having design redundancy and low reliability.

[0004] In a first aspect, the embodiments provide a verification method based on the bolt torque range, the method comprising:

[0005] Determine the minimum torque of the bolt based on load requirements and / or anti-loosening requirements;

[0006] Determine the maximum torque of the bolt based on surface pressure requirements and / or strength requirements;

[0007] The minimum and maximum torques are adjusted according to temperature requirements to determine the torque range of the bolt.

[0008] The application of the bolt is verified based on the torque range.

[0009] In an optional implementation, the step of determining the minimum torque of the bolt based on load requirements and / or anti-loosening requirements includes:

[0010] Based on the impact force of the load connector and the axial force of the bolt, determine the first minimum torque required by the bolt to meet the load requirements;

[0011] Based on the yield strength of the bolt and the first preset proportional factor, determine the second minimum torque required for the bolt to meet the anti-loosening requirement;

[0012] The minimum torque of the bolt is determined based on the larger of the first minimum torque and the second minimum torque.

[0013] In an optional implementation, the step of determining the minimum torque required by the bolt to meet the load requirement based on the impact force of the load connector and the axial force of the bolt includes:

[0014] The minimum tangential friction force of the bolt is determined based on the impact force generated by the load connection under impact conditions.

[0015] The minimum axial force of the bolt is determined based on the friction coefficient between the bolt and the load connection and the minimum tangential friction force.

[0016] The first minimum torque is determined based on the minimum axial force of the bolt, the nominal diameter of the bolt, and the tightening torque coefficient.

[0017] In an optional implementation, the step of determining the maximum torque of the bolt based on surface pressure requirements and / or strength requirements includes:

[0018] Based on the yield strength and minimum pressing area of ​​the bolt, determine the first maximum torque required for the bolt to meet the surface pressure requirement;

[0019] Based on the yield strength of the bolt and a second preset proportional factor, determine the second maximum torque required by the bolt to meet the strength requirements;

[0020] The maximum torque of the bolt is determined based on the smaller of the first maximum torque and the second maximum torque.

[0021] In an optional implementation, the step of determining the first maximum torque required to satisfy the surface pressure of the bolt, based on the bolt's yield strength and minimum pressing area, includes:

[0022] The maximum axial force of the bolt is determined based on the product of the bolt's yield strength and the minimum pressure area.

[0023] The first maximum torque is determined based on the maximum axial force of the bolt, the nominal diameter of the bolt, and the torque coefficient.

[0024] In an optional implementation, the step of adjusting the minimum torque and the maximum torque according to temperature requirements to determine the torque range of the bolt includes:

[0025] Based on the effect of temperature change on the axial force of the bolt, the amount of torque that affects the change is determined;

[0026] The minimum torque is increased by the amount of torque that affects the change, thereby determining the lower limit of the torque range of the bolt;

[0027] The maximum torque is reduced by the amount of torque variation that affects it, thereby determining the upper limit of the torque range of the bolt.

[0028] In an optional implementation, the method further includes:

[0029] Determine the required type of bolt based on the current application's business scenario.

[0030] Secondly, the embodiment provides a verification device based on bolt torque range, the device comprising:

[0031] The first determining module determines the minimum torque of the bolt based on load requirements and / or anti-loosening requirements;

[0032] The second determining module determines the maximum torque of the bolt based on surface pressure requirements and / or strength requirements;

[0033] The adjustment module adjusts the minimum torque and the maximum torque according to temperature requirements to determine the torque range of the bolt.

[0034] The verification module verifies the application of the bolt based on the torque range.

[0035] Thirdly, an embodiment provides an electronic device including a memory and a processor. The memory stores a computer program that can run on the processor. When the processor executes the computer program, it implements the steps of the method described in any of the foregoing embodiments.

[0036] Fourthly, an embodiment provides a machine-readable storage medium storing machine-executable instructions, which, when invoked and executed by a processor, cause the processor to perform the steps of the method described in any of the foregoing embodiments.

[0037] This invention provides a method, apparatus, and electronic device for verifying bolt torque range. The minimum torque of the bolt is determined based on load requirements and / or anti-loosening requirements, and the maximum torque is determined based on surface pressure requirements and / or strength requirements. Then, the minimum and maximum torques are adjusted according to the influence of temperature requirements on the bolt to determine the bolt torque range. The application of the bolt is verified based on this reasonable torque range, ensuring the reliability of bolt application while reducing design redundancy.

[0038] Other features and advantages of this disclosure will be set forth in the following description, or some features and advantages may be inferred from the description or determined without doubt, or may be learned by practicing the techniques described above.

[0039] To make the above-mentioned objects, features and advantages of this disclosure more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0040] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0041] Figure 1 A flowchart of a verification method based on bolt torque range provided in an embodiment of the present invention;

[0042] Figure 2 A schematic diagram of minimum area simulation provided for an embodiment of the present invention;

[0043] Figure 3 A functional block diagram of a verification device based on bolt torque range provided in an embodiment of the present invention;

[0044] Figure 4 This is a schematic diagram of the hardware architecture of an electronic device provided in an embodiment of the present invention. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0046] The current bolt torque range lacks a systematic and detailed analysis and design process, which leads to the need to repeatedly try different types of bolts in application, resulting in low reliability.

[0047] Based on this, the embodiments of the present invention provide a verification method, device and electronic device based on bolt torque range, which establishes a systematic and detailed bolt torque determination method and verification method, avoids or reduces design redundancy and improves the reliability of bolted connections.

[0048] To facilitate understanding of this embodiment, a verification method based on bolt torque range disclosed in this embodiment of the invention will be described in detail first. This method can be applied to intelligent control devices such as controllers, host computers, and servers.

[0049] Figure 1 This is a flowchart of a verification method based on bolt torque range provided in an embodiment of the present invention.

[0050] like Figure 1 As shown, the method includes the following steps:

[0051] Step S102: Determine the minimum torque of the bolt based on load requirements and / or anti-loosening requirements.

[0052] Among them, load requirement and anti-loosening requirement are two types of requirements for bolts. The minimum torque can be determined according to the type of requirement of the bolt. Load requirement can be understood as the influence of the load connection connected to the bolt on it, and anti-loosening requirement can be understood as the requirement for the tightness of the bolt when it is tightened.

[0053] Step S104: Determine the maximum torque of the bolt based on the surface pressure requirement and / or strength requirement.

[0054] Among them, surface pressure requirement and / or strength requirement are also types of bolt requirements. The maximum torque can be determined according to the type of bolt requirement. Surface pressure requirement can be understood as the stress requirement on the surface of the load-bearing connection when it is under pressure, and strength requirement can be understood as the stress strength requirement that the bolt bears after being tightened.

[0055] Step S106: Adjust the minimum and maximum torque according to the temperature requirements to determine the torque range of the bolt.

[0056] Here, in order to further improve the application reliability of the bolt torque range, the influence of different temperature changes on the bolt torque range is also considered.

[0057] Step S108: Verify the application of bolts based on the torque range.

[0058] Based on the appropriate torque range determined by this analysis, the application of bolts is checked to ensure the reliability of bolt application.

[0059] In a preferred embodiment of practical application, the minimum torque of the bolt is determined based on load requirements and / or anti-loosening requirements, and the maximum torque of the bolt is determined based on surface pressure requirements and / or strength requirements. Then, the minimum and maximum torques are adjusted according to the influence of temperature requirements on the bolt to determine the torque range of the bolt. The application of the bolt is checked based on this reasonable torque range, which ensures the reliability of the bolt application while reducing design redundancy.

[0060] In some embodiments, prior to implementing the steps of the foregoing embodiments, different optimal torque ranges can be determined for different needs to adapt to different application scenarios; as one embodiment, the method further includes:

[0061] Step 1.1) Determine the bolt requirement type based on the current application's business scenario.

[0062] The requirements can be determined based on the business scenario of the bolt application, such as whether it is only necessary to meet the load requirement, or whether it is necessary to meet both the load requirement and the relaxation requirement. Based on different requirement types, different torque ranges can be determined to better adapt to the current application.

[0063] In some embodiments, the determination of the minimum torque in step S102 can be determined according to the demand type. If the demand type is a load demand or an anti-loosening demand, the step of determining the minimum torque includes:

[0064] Step 2.1) Determine the minimum torque required for the bolt to meet the load requirements based on the impact force of the load connector and the axial force of the bolt.

[0065] or,

[0066] Step 2.2): Determine the minimum torque required to meet the anti-loosening requirements of the bolt based on the bolt's yield strength and the first preset proportional factor.

[0067] Based on the corresponding requirement type, the minimum bolt torque that can meet the requirement is determined.

[0068] In other embodiments, determining the minimum torque in step S102, when the demand type requires simultaneous satisfaction of load requirements and anti-loosening requirements, includes:

[0069] Step 3.1) Determine the first minimum torque required to meet the load requirements of the bolt based on the impact force of the load connector and the axial force of the bolt.

[0070] Step 3.2): Determine the second minimum torque required to meet the anti-loosening requirements of the bolt based on the bolt's yield strength and the first preset proportional factor.

[0071] Step 3.3): Determine the minimum torque of the bolt based on the larger of the first minimum torque and the second minimum torque.

[0072] The larger of the first and second minimum torque values ​​is taken as the minimum torque of the bolt in this case.

[0073] Based on the foregoing embodiments, the method for determining the minimum torque in steps 2.1) and 3.1) can be implemented through the following steps, including:

[0074] Step 4.1) Determine the minimum tangential friction force of the bolt based on the impact force generated by the load connector under impact conditions.

[0075] It should be noted that load-bearing connectors (connected parts) often exert a certain load on the connection under mechanical conditions. Since the axial load of the bolts is borne by the bolts themselves, the load calculation usually only needs to consider the case perpendicular to the bolts. A common mechanical load in the industry is the impact condition, which is the product of the total mass of the connected parts and the acceleration under the impact condition, determining the impact force generated by the connected parts under the current impact condition. To ensure that the entire connection does not slip, the tangential friction between the connected parts and the bolts needs to be greater than this impact force; that is, impact force = minimum tangential friction force.

[0076] Step 4.2) Determine the minimum axial force of the bolt based on the friction coefficient and minimum tangential friction force between the bolt and the load connection.

[0077] For example, the minimum axial force on a bolt can be determined by the following formula:

[0078] F 摩min <F 轴 ×μ

[0079]

[0080] Among them, F 摩min Minimum tangential friction force, F 轴 : Axial force generated by bolt connection, μ: Coefficient of friction between bolt and connected parts.

[0081] Step 4.3): Determine the first minimum torque based on the minimum axial force of the bolt, the nominal diameter of the bolt, and the tightening torque coefficient; the relationship between this axial force and torque is shown in the following formula:

[0082]

[0083] Where T: tightening torque, K: tightening torque coefficient (0.19~0.21), generally taken as 0.19, D: nominal diameter of bolt, the tightening torque coefficient may include 0.19~0.21, generally taken as 0.19.

[0084] It can be seen that, based on the formula relating axial force and torque, the first minimum torque can be determined under the action of the minimum axial force of the bolt.

[0085] Based on the aforementioned embodiments, considering the need for anti-loosening, the rule for determining the minimum torque in steps 2.2) and 3.2) can be understood as the minimum axial force generated by the minimum torque should be greater than a preset proportion of the bolt's yield strength. This preset proportion is determined according to the standard parts design manual, resulting in a preset proportion of 50%. Considering that in actual production, the accuracy achievable by a torque wrench is generally ±3% to ±5%, preferably ±3%, the first preset proportion factor is preferably 53%.

[0086] In practical applications, the minimum axial force is determined by multiplying the yield strength of the bolt stud, its nominal stress area, and the first preset proportional factor; then, according to the aforementioned step 4.3), the minimum torque corresponding to the minimum axial force is determined.

[0087] In some embodiments, the determination of the maximum torque in step S104 can be determined according to the demand type. In the case where the demand type is surface pressure demand and / or strength demand, the step of determining the maximum torque includes:

[0088] Step 5.1): Determine the maximum torque required to meet the surface pressure requirement of the bolt based on its yield strength and minimum pressing area.

[0089] or,

[0090] Step 5.2): Determine the maximum torque required to meet the strength requirements of the bolt based on the bolt's yield strength and the second preset proportional factor.

[0091] In other embodiments, the determination of the maximum torque in step S104, when the demand type requires simultaneous satisfaction of surface pressure and strength requirements, includes:

[0092] Step 6.1): Determine the first maximum torque required to satisfy the surface pressure of the bolt based on the bolt's yield strength and minimum pressing area.

[0093] Step 6.2): ​​Determine the second maximum torque required to meet the strength requirements of the bolt based on the bolt's yield strength and the second preset proportional factor.

[0094] Step 6.3) Determine the maximum torque of the bolt based on the smaller of the first maximum torque and the second maximum torque.

[0095] The smaller of the first and second maximum torque values ​​is taken as the maximum torque of the bolt in this case.

[0096] Based on the foregoing embodiments, the method for determining the maximum torque in steps 5.1) and 6.1) can be implemented through the following steps, including:

[0097] Step 7.1) Determine the maximum axial force of the bolt based on the product of the bolt's yield strength and the minimum crimp area.

[0098] When bolts are tightened, the axial force of the tightening causes the connected parts to be under pressure. The stress on the surface of the connected parts under pressure is called surface pressure. It should be noted that surface pressure calculations need to consider the actual tolerance dimensions of the bolts and through holes, and typically use the minimum limiting dimensions for calculation. 3D software is usually used to simulate the minimum area of ​​the assembly; the minimum pressing area of ​​the bolt flange face is as follows: Figure 2 As shown, the black part in the center can be understood as the minimum diameter of the bolt.

[0099] Step 7.2) Determine the first maximum torque based on the maximum axial force of the bolt, the nominal diameter of the bolt, and the torque coefficient.

[0100] In practical applications, the maximum axial force is determined by multiplying the minimum pressing area and the yield strength of the connected parts, and then the maximum torque is determined by the relationship formula between torque and axial force in the aforementioned embodiments.

[0101] Based on the aforementioned embodiments, considering strength requirements, the rule for determining the maximum torque in steps 6.2) and 7.2) can be understood as follows: after the bolt is tightened, the stress borne by the bolt should be less than a preset proportion of the bolt's yield strength. This preset proportion is determined according to the standard parts design manual, resulting in a preset proportion of 90%. Therefore, the preferred second preset proportion factor is 90%.

[0102] In practical applications, the maximum axial force is determined by multiplying the yield strength of the bolt stud, its nominal stress area, and the second preset proportional factor; then, based on the formula relating axial force and torque mentioned above, the maximum torque corresponding to the maximum axial force is determined.

[0103] In some embodiments, temperature conditions are an easily overlooked yet crucial factor in bolted connections, because in practical applications, bolted connections often involve transitions between different temperature ranges, and temperature changes significantly affect the axial force of the bolt. To further ensure the reliability of bolt applications, the influence of temperature on the bolt must also be considered; exemplarily, step S106 includes:

[0104] Step 8.1) Determine the amount of torque that affects the change based on the influence of temperature change on the axial force of the bolt.

[0105] The formula for calculating the effect of temperature change on axial force is as follows:

[0106]

[0107]

[0108]

[0109] Where l is the thickness of the tightening component, ΔT S Let ΔT be the temperature change of the stud. P ΔF is the temperature change of the copper busbar, δ is the axial force, and δ is the axial force. s For stud strain, δ P For the strain of the copper busbar, α s α is the coefficient of expansion of the stud.P E is the coefficient of thermal expansion of the copper busbar. SRT E represents the modulus of a thread (triangular mechanical thread stud) at room temperature. PRT E represents the modulus of the tightened component (copper busbar) at room temperature. ST E represents the modulus of a thread (triangular mechanical thread stud) under high / low temperature conditions. PT The modulus of the tightened component (copper busbar) under high / low temperature conditions is given by As, which is the nominal stress area, and AP, which is the sub-section area. The copper busbar is used as an example of the connected component here.

[0110] It should be noted that in the above formula (α) s ·ΔT S -α P ·ΔT P The preload needs to be determined based on the coefficient of linear expansion of the connected parts. If the bolt is heated significantly, exceeding the temperature of the surrounding environment, and / or its coefficient of expansion is greater than that of the clamping parts under the same temperature change, the preload will decrease based on the difference in linear deformation. If the bolt is stretched to a lesser extent than the clamping parts, the preload will increase.

[0111] In the formula If both the bolt and the connected component are metal, and the temperature change Δt is within 100℃, it can be directly simplified to δ. s +δ P This is because when the temperature change is small, the change in the modulus of the connected parts and bolts is very small. However, if the temperature of the connected parts and bolts changes, the modulus changes significantly, and the influence of the modulus needs to be considered here.

[0112] Step 8.2) Increase the minimum torque to affect the amount of change in torque, and determine the lower limit of the torque range of the bolt.

[0113] To account for the effects of temperature, the amount of this variable torque needs to be increased beyond the minimum torque determined by the aforementioned anti-loosening and / or load requirements, in order to further ensure the reliability of bolt application.

[0114] Step 8.3) Reduce the maximum torque to affect the amount of change in torque and determine the upper limit of the bolt's torque range.

[0115] To account for the effects of temperature, the amount of this change in torque needs to be reduced based on the maximum torque determined by the aforementioned surface pressure requirements and / or strength requirements, in order to further ensure the reliability of bolt application.

[0116] By adjusting the maximum and minimum torque according to temperature requirements, the optimal range of bolt torque is determined.

[0117] In some embodiments, step S108 may specifically include: verifying the bolt production line using the torque range; verifying the produced bolt products based on the torque range to determine whether the products are qualified; and using the torque range to perform appropriate bolt product selection verification for the scenario corresponding to the current demand type, so that the verified bolt products meet the business requirements of the scenario.

[0118] like Figure 3 As shown, this embodiment of the invention also provides a verification device 200 based on bolt torque range, the device comprising:

[0119] The first determining module 201 determines the minimum torque of the bolt based on load requirements and / or anti-loosening requirements;

[0120] The second determining module 202 determines the maximum torque of the bolt based on the surface pressure requirement and / or strength requirement;

[0121] The adjustment module 203 adjusts the minimum torque and the maximum torque according to the temperature requirements to determine the torque range of the bolt.

[0122] The verification module 204 verifies the application of the bolt based on the torque range.

[0123] In some embodiments, the first determining module 201 is further specifically configured to: determine a first minimum torque for the bolt to meet the load requirements based on the impact force of the load connector and the axial force of the bolt; determine a second minimum torque for the bolt to meet the anti-loosening requirements based on the yield strength of the bolt and a first preset proportional factor; and determine the minimum torque of the bolt based on the larger torque value between the first minimum torque and the second minimum torque.

[0124] In some embodiments, the first determining module 201 is further specifically configured to: determine the minimum tangential friction force of the bolt based on the impact force generated by the load connector under impact conditions; determine the minimum axial force of the bolt based on the friction coefficient between the bolt and the load connector and the minimum tangential friction force; and determine the first minimum torque based on the minimum axial force of the bolt, the nominal diameter of the bolt, and the tightening torque coefficient.

[0125] In some embodiments, the second determining module 202 is further configured to: determine a first maximum torque for the bolt to meet the surface pressure requirement based on the bolt's yield strength and minimum pressing area; determine a second maximum torque for the bolt to meet the strength requirement based on the bolt's yield strength and a second preset proportional factor; and determine the maximum torque of the bolt based on the smaller torque value between the first maximum torque and the second maximum torque.

[0126] In some embodiments, the second determining module 202 is further specifically configured to determine the maximum axial force of the bolt based on the product of the bolt's yield strength and the minimum pressing area; and to determine the first maximum torque based on the maximum axial force of the bolt, the bolt's nominal diameter, and the torque coefficient.

[0127] In some embodiments, the adjustment module 203 is further configured to: determine the amount of torque affecting the change based on the effect of temperature change on the axial force of the bolt; increase the minimum torque by the amount of torque affecting the change to determine the lower limit of the torque range of the bolt; and decrease the maximum torque by the amount of torque affecting the change to determine the upper limit of the torque range of the bolt.

[0128] In some embodiments, the apparatus further includes a third determining module, which determines the required type of the bolt based on the current application's business scenario.

[0129] Figure 4 This is a schematic diagram of the hardware architecture of the electronic device 300 provided in an embodiment of the present invention. See also... Figure 4 As shown, the electronic device 300 includes a machine-readable storage medium 301 and a processor 302, and may also include a non-volatile storage medium 303, a communication interface 304, and a bus 305; wherein the machine-readable storage medium 301, the processor 302, the non-volatile storage medium 303, and the communication interface 304 communicate with each other through the bus 305. The processor 302 can execute the bolt torque range-based verification method described in the above embodiments by reading and executing the machine-executable instructions in the machine-readable storage medium 301 for verification based on the bolt torque range.

[0130] The machine-readable storage medium mentioned in this article can be any electronic, magnetic, optical, or other physical storage device that can contain or store information such as executable instructions, data, etc. For example, machine-readable storage media can be: RAM (Random Access Memory), volatile memory, non-volatile memory, flash memory, storage drives (such as hard disk drives), any type of storage disk (such as optical discs, DVDs, etc.), or similar storage media, or combinations thereof.

[0131] Non-volatile media can be non-volatile memory, flash memory, storage drives (such as hard disk drives), any type of storage disk (such as optical discs, DVDs, etc.), or similar non-volatile storage media, or combinations thereof.

[0132] It is understood that the specific operation methods of each functional module in this embodiment can be referred to the detailed description of the corresponding steps in the above method embodiment, and will not be repeated here.

[0133] The computer-readable storage medium provided in this embodiment of the invention stores a computer program. When the computer program code is executed, it can implement the verification method based on bolt torque range described in any of the above embodiments. For specific implementation, please refer to the method embodiments, which will not be repeated here.

[0134] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working process of the system and apparatus described above can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0135] Furthermore, in the description of the embodiments of the present invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0136] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0137] Finally, it should be noted that the above-described embodiments are merely specific implementations of the present invention, used to illustrate the technical solutions of the present invention, and not to limit them. The scope of protection of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments within the scope of the technology disclosed in the present invention, or make equivalent substitutions for some of the technical features; and these modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be covered within the scope of protection of the present invention.

Claims

1. A verification method based on bolt torque range, characterized in that, The method includes: Determining the minimum torque of a bolt based on load requirements and / or anti-loosening requirements includes: determining the minimum tangential friction force of the bolt based on the impact force generated by the load connector under impact conditions; determining the minimum axial force of the bolt based on the friction coefficient between the bolt and the load connector and the minimum tangential friction force; determining a first minimum torque based on the minimum axial force of the bolt, the nominal diameter of the bolt, and the tightening torque coefficient; determining a second minimum torque to meet the anti-loosening requirements of the bolt based on the yield strength of the bolt and a first preset proportional factor; and determining the minimum torque of the bolt based on the larger of the first minimum torque and the second minimum torque. Determining the maximum torque of a bolt based on surface pressure requirements and / or strength requirements includes: determining the maximum axial force of the bolt based on the product of the bolt's yield strength and minimum pressing area; determining a first maximum torque based on the bolt's maximum axial force, nominal bolt diameter, and torque coefficient; determining a second maximum torque that satisfies the bolt's strength requirements based on the bolt's yield strength and a second preset proportional factor; and determining the maximum torque of the bolt based on the smaller torque value between the first and second maximum torques. The minimum and maximum torques are adjusted according to temperature requirements to determine the torque range of the bolt. The application of the bolt is verified based on the torque range.

2. The method according to claim 1, characterized in that, The step of adjusting the minimum torque and the maximum torque according to temperature requirements to determine the torque range of the bolt includes: Based on the effect of temperature change on the axial force of the bolt, the amount of torque that affects the change is determined; The minimum torque is increased by the amount of torque that affects the change, thereby determining the lower limit of the torque range of the bolt; The maximum torque is reduced by the amount of torque variation that affects it, thereby determining the upper limit of the torque range of the bolt.

3. The method according to claim 1, characterized in that, The method further includes: Determine the required type of bolt based on the current application's business scenario.

4. A verification device based on bolt torque range, characterized in that, The apparatus is used to perform the method of any one of claims 1-3, and the apparatus comprises: The first determining module determines the minimum torque of the bolt based on load requirements and / or anti-loosening requirements; The second determining module determines the maximum torque of the bolt based on surface pressure requirements and / or strength requirements; The adjustment module adjusts the minimum torque and the maximum torque according to temperature requirements to determine the torque range of the bolt. The verification module verifies the application of the bolt based on the torque range.

5. An electronic device, comprising a memory and a processor, wherein the memory stores a computer program executable on the processor, characterized in that, When the processor executes the computer program, it implements the steps of the method described in any one of claims 1 to 3.

6. A machine-readable storage medium, characterized in that, The machine-readable storage medium stores machine-executable instructions that, when invoked and executed by a processor, cause the processor to perform the steps of the method according to any one of claims 1 to 3.

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