Method and device for determining hydraulic preload force of double-headed high-strength bolts, and storage medium

Abstract

The present application discloses a method and device for determining the hydraulic preload of a double-headed high-strength bolt, a storage medium, and a computer device. The method includes: obtaining the effective stretching length and effective stretching diameter corresponding to the double-headed high-strength bolt, and determining the bolt stretching size factor corresponding to the double-headed high-strength bolt; when the bolt stretching size factor is between 2 and 7, determining the preload loss ratio corresponding to the double-headed high-strength bolt according to the bolt stretching size factor; obtaining the hydraulic installation stretching force of the hydraulic loading tool corresponding to the double-headed high-strength bolt, and determining the hydraulic preload corresponding to the double-headed high-strength bolt based on the hydraulic installation stretching force and the preload loss ratio. The present application can effectively and conveniently determine the actual hydraulic preload of a double-headed high-strength bolt with a bolt stretching size factor between 2 and 7, which is conducive to improving the accuracy of determining the hydraulic preload of the double-headed high-strength bolt and improving the safety of product connection.

Description

Technical Field

[0001] The present application relates to the technical field of mechanical connection detection, and in particular to a method and device for determining the hydraulic preload force of a double-headed high-strength bolt, a storage medium, and a computer device. Background Art

[0002] Double-headed high-strength bolts are now mostly used in the field of mechanical structure connection of large pressure-bearing equipment, and their application areas are gradually expanding. Compared with ordinary bolts, the advantages of double-headed high-strength bolts are easy disassembly, a larger range of preload, less thread seizure, and high installation accuracy. In the design of mechanical connections, accurately estimating the actual preload of the bolts is of great significance to the safety and functionality of the connected parts, and can effectively avoid safety incidents caused by insufficient actual preload of the bolts.

[0003] At present, there is no theoretical calculation method for the actual preload force of double-headed high-strength bolts with a tensile size factor between 2 and 7 in the machinery industry. Most of them directly use the preload force applied to the double-headed high-strength bolts as the actual preload force. This method will seriously affect the safety and functionality of the connection parts, and with the widespread application of this type of bolts, refined design requires a more accurate actual preload force calculation method. Summary of the invention

[0004] In view of this, the present application provides a method and device for determining the hydraulic preload of a double-headed high-strength bolt, a storage medium, and a computer device, which can effectively and conveniently determine the actual hydraulic preload of a double-headed high-strength bolt with a bolt tensile size factor between 2 and 7, which is beneficial to improving the accuracy of determining the hydraulic preload of the double-headed high-strength bolt. While improving the safety of product connections, it can assist designers and mechanical simulation personnel to more accurately calculate the connection conditions of the product, thereby improving the efficiency of product connection analysis.

[0005] According to one aspect of the present application, a method for determining the hydraulic preload force of a double-headed high-strength bolt is provided, comprising:

[0006] Obtaining the effective tensile length and effective tensile diameter corresponding to the double-headed high-strength bolt, and determining the bolt tensile size factor corresponding to the double-headed high-strength bolt;

[0007] When the bolt tensile size factor is between 2 and 7, the preload loss ratio corresponding to the double-headed high-strength bolt is determined according to the bolt tensile size factor;

[0008] The hydraulic installation tensile force of the hydraulic loading tool corresponding to the double-headed high-strength bolt is obtained, and the hydraulic preload force corresponding to the double-headed high-strength bolt is determined based on the hydraulic installation tensile force and the preload force loss ratio.

[0009] Optionally, determining the preload loss ratio corresponding to the double-headed high-strength bolt according to the bolt tensile size factor specifically includes:

[0010] According to the bolt stretching size factor, the bolt stretching size factor is used as the independent variable of the preset preload loss ratio calculation function to calculate the preload loss ratio corresponding to the double-headed high-strength bolt. The preset preload loss ratio calculation function is:

[0011] R=0.0037K 2 -0.0502K+0.4342,

[0012] Wherein, K represents the bolt tensile size factor, and R represents the preload loss ratio.

[0013] Optionally, determining the hydraulic preload force corresponding to the double-headed high-strength bolt based on the hydraulic installation tensile force and the preload force loss ratio specifically includes:

[0014] Determining a tensile force loss value of the double-headed high-strength bolt based on the hydraulic installation tensile force and the preload force loss ratio;

[0015] The hydraulic preload force corresponding to the double-headed high-strength bolt is determined according to the hydraulic installation tensile force and the tensile force loss value.

[0016] Optionally, before obtaining the effective stretching length and effective stretching diameter corresponding to the double-headed high-strength bolt, the method further includes:

[0017] Respectively determine a first length of the stud high-strength bolt screwed into a preset first workpiece, a second length of the stud high-strength bolt meshing with a preset nut, and a third length of the stud high-strength bolt clamped by a preset second workpiece;

[0018] Based on the first length, the second length and the third length, an effective tensile length corresponding to the stud high-strength bolt is determined.

[0019] Optionally, obtaining the hydraulic installation tensile force of the hydraulic loading tool corresponding to the stud high-strength bolt specifically includes:

[0020] The hydraulic loading pressure and the hydraulic stretching area corresponding to when the hydraulic loading tool stretches the double-headed high-strength bolt are obtained, and the hydraulic installation stretching force of the hydraulic loading tool is determined according to the hydraulic loading pressure and the hydraulic stretching area.

[0021] Optionally, after determining the hydraulic preload force corresponding to the double-headed high-strength bolt, the method further includes:

[0022] Based on the hydraulic preload force corresponding to the double-headed high-strength bolt and the preset required preload force, the safety margin of the double-headed high-strength bolt is determined, and when the safety margin is greater than or equal to the preset margin threshold, a safety prompt message is output.

[0023] Optionally, the effective tensile diameter corresponding to the stud high-strength bolt is the minimum diameter corresponding to the stud high-strength bolt.

[0024] According to another aspect of the present application, a device for determining the hydraulic preload force of a double-headed high-strength bolt is provided, comprising:

[0025] A stretching size factor determination module is used to obtain an effective stretching length and an effective stretching diameter corresponding to the double-headed high-strength bolt, and determine a bolt stretching size factor corresponding to the double-headed high-strength bolt;

[0026] A preload loss ratio determination module, used to determine the preload loss ratio corresponding to the double-headed high-strength bolt according to the bolt tension size factor when the bolt tension size factor is between 2 and 7;

[0027] The hydraulic preload force determination module is used to obtain the hydraulic installation tensile force of the hydraulic loading tool corresponding to the double-headed high-strength bolt, and determine the hydraulic preload force corresponding to the double-headed high-strength bolt based on the hydraulic installation tensile force and the preload force loss ratio.

[0028] Optionally, the preload force loss ratio determination module is specifically used to:

[0029] According to the bolt stretching size factor, the bolt stretching size factor is used as the independent variable of the preset preload loss ratio calculation function to calculate the preload loss ratio corresponding to the double-headed high-strength bolt. The preset preload loss ratio calculation function is:

[0030] R=0.0037K 2 -0.0502K+0.4342,

[0031] Wherein, K represents the bolt tensile size factor, and R represents the preload loss ratio.

[0032] Optionally, the hydraulic preload force determination module is specifically used to:

[0033] Determining a tensile force loss value of the double-headed high-strength bolt based on the hydraulic installation tensile force and the preload force loss ratio;

[0034] The hydraulic preload force corresponding to the double-headed high-strength bolt is determined according to the hydraulic installation tensile force and the tensile force loss value.

[0035] Optionally, the device further comprises:

[0036] The effective stretching length determination module is used to determine the first length of the stud high-strength bolt screwed into a preset first workpiece, the second length of the stud high-strength bolt meshing with a preset nut, and the third length of the stud high-strength bolt clamped by a preset second workpiece before obtaining the effective stretching length and the effective stretching diameter corresponding to the stud high-strength bolt; based on the first length, the second length and the third length, determine the effective stretching length corresponding to the stud high-strength bolt.

[0037] Optionally, the hydraulic preload force determination module is further used to:

[0038] The hydraulic loading pressure and the hydraulic stretching area corresponding to when the hydraulic loading tool stretches the double-headed high-strength bolt are obtained, and the hydraulic installation stretching force of the hydraulic loading tool is determined according to the hydraulic loading pressure and the hydraulic stretching area.

[0039] Optionally, the device further comprises:

[0040] A safety margin determination module is used to determine the safety margin of the double-headed high-strength bolt based on the hydraulic preload corresponding to the double-headed high-strength bolt and the preset required preload after the hydraulic preload corresponding to the double-headed high-strength bolt is determined, and output a safety prompt message when the safety margin is greater than or equal to the preset margin threshold.

[0041] Optionally, the effective tensile diameter corresponding to the stud high-strength bolt is the minimum diameter corresponding to the stud high-strength bolt.

[0042] According to another aspect of the present application, a storage medium is provided, on which a computer program is stored, and when the program is executed by a processor, the method for determining the hydraulic preload force of the double-headed high-strength bolt is implemented.

[0043] According to another aspect of the present application, a computer device is provided, including a storage medium, a processor, and a computer program stored on the storage medium and executable on the processor, wherein the processor implements the above-mentioned method for determining the hydraulic preload force of the double-headed high-strength bolt when executing the program.

[0044] By means of the above technical scheme, the present application provides a method and device for determining the hydraulic preload of a double-headed high-strength bolt, a storage medium, and a computer device, which obtain the effective stretching length and effective stretching diameter of the double-headed high-strength bolt, and determine the bolt stretching size factor of the double-headed high-strength bolt according to the effective stretching length and effective stretching diameter. After determining the bolt stretching size factor corresponding to the double-headed high-strength bolt, when the bolt stretching size factor is between 2 and 7, the preload loss ratio of the double-headed high-strength bolt can be determined based on the bolt stretching size factor, and the relationship between the hydraulic preload applied to the double-headed high-strength bolt and the lost preload can be determined through the preload loss ratio. Next, the hydraulic installation tensile force when the hydraulic loading tool pressurizes the double-headed high-strength bolt is obtained, and the actual hydraulic preload of the double-headed high-strength bolt can be further determined based on the hydraulic installation tensile force and the preload loss ratio. The embodiment of the present application first determines the bolt tensile size factor, then determines the preload loss ratio corresponding to the double-headed high-strength bolt based on the bolt tensile size factor, and finally determines the actual hydraulic preload of the double-headed high-strength bolt. The actual hydraulic preload of the double-headed high-strength bolt with a bolt tensile size factor between 2 and 7 can be determined effectively and simply, which is beneficial to improving the accuracy of determining the hydraulic preload of the double-headed high-strength bolt. While improving the safety of product connections, it can assist designers and mechanical simulation personnel to more accurately calculate the connection status of the product, thereby improving the efficiency of product connection analysis.

[0045] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0047] Figure 1 A schematic flow chart of a method for determining a hydraulic preload force of a double-headed high-strength bolt provided in an embodiment of the present application is shown;

[0048] Figure 2 A schematic flow chart of another method for determining the hydraulic preload force of a double-headed high-strength bolt provided in an embodiment of the present application is shown;

[0049] Figure 3 A schematic diagram of connecting workpieces with a double-headed high-strength bolt provided in an embodiment of the present application is shown;

[0050] Figure 4A schematic diagram of a preset preload loss ratio calculation function provided in an embodiment of the present application is shown;

[0051] Figure 5 A structural schematic diagram of a device for determining the hydraulic preload force of a double-headed high-strength bolt provided in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0052] The present application will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0053] In this embodiment, a method for determining the hydraulic preload force of a double-headed high-strength bolt is provided. Figure 1 As shown, the method includes:

[0054] Step 101, obtaining an effective stretching length and an effective stretching diameter corresponding to a double-headed high-strength bolt, and determining a bolt stretching size factor corresponding to the double-headed high-strength bolt;

[0055] The embodiments of the present application are mainly applicable to the scenario of determining the hydraulic preload force of the double-headed high-strength bolts. The execution subject of the embodiments of the present application is a device or equipment capable of determining the hydraulic preload force of the double-headed high-strength bolts, which can be specifically set on the client or server side. The embodiments of the present application can first obtain the effective stretching length and effective stretching diameter of the double-headed high-strength bolts, and determine the bolt stretching size factor of the double-headed high-strength bolts according to the effective stretching length and the effective stretching diameter. For example, the effective stretching length of the double-headed high-strength bolt is L, and the effective stretching diameter is D, then the corresponding bolt stretching size factor can be K=L / D.

[0056] Step 102, when the bolt tensile size factor is between 2 and 7, determining the preload loss ratio corresponding to the double-headed high-strength bolt according to the bolt tensile size factor;

[0057] In this embodiment, after determining the bolt stretch size factor corresponding to the double-headed high-strength bolt, if the bolt stretch size factor is between 2 and 7, the preload loss ratio of the double-headed high-strength bolt can be determined based on the bolt stretch size factor. Through the preload loss ratio, the relationship between the hydraulic preload applied to the double-headed high-strength bolt and the lost preload can be determined.

[0058] Step 103, obtaining the hydraulic installation tensile force of the hydraulic loading tool corresponding to the double-headed high-strength bolt, and determining the hydraulic preload force corresponding to the double-headed high-strength bolt based on the hydraulic installation tensile force and the preload force loss ratio.

[0059] In this embodiment, when hydraulic pre-tightening the double-headed high-strength bolts, it can be achieved by a hydraulic loading tool matched with the double-headed high-strength bolts. The hydraulic loading tool can pressurize the double-headed high-strength bolts through an oil pump. The hydraulic installation tensile force when the hydraulic loading tool pressurizes the double-headed high-strength bolts is obtained, and based on the hydraulic installation tensile force and the pre-tightening force loss ratio, the actual hydraulic pre-tightening force of the double-headed high-strength bolts can be further determined.

[0060] By applying the technical solution of this embodiment, the effective stretching length and effective stretching diameter of the double-headed high-strength bolt are obtained, and the bolt stretching size factor of the double-headed high-strength bolt is determined according to the effective stretching length and the effective stretching diameter. After determining the bolt stretching size factor corresponding to the double-headed high-strength bolt, when the bolt stretching size factor is between 2 and 7, the preload loss ratio of the double-headed high-strength bolt can be determined based on the bolt stretching size factor. Through the preload loss ratio, the relationship between the hydraulic preload applied to the double-headed high-strength bolt and the lost preload can be determined. Next, the hydraulic installation tensile force when the hydraulic loading tool pressurizes the double-headed high-strength bolt is obtained, and based on the hydraulic installation tensile force and the preload loss ratio, the actual hydraulic preload of the double-headed high-strength bolt can be further determined. The embodiment of the present application first determines the bolt tensile size factor, then determines the preload loss ratio corresponding to the double-headed high-strength bolt based on the bolt tensile size factor, and finally determines the actual hydraulic preload of the double-headed high-strength bolt. The actual hydraulic preload of the double-headed high-strength bolt with a bolt tensile size factor between 2 and 7 can be determined effectively and simply, which is beneficial to improving the accuracy of determining the hydraulic preload of the double-headed high-strength bolt. While improving the safety of product connections, it can assist designers and mechanical simulation personnel to more accurately calculate the connection status of the product, thereby improving the efficiency of product connection analysis.

[0061] Further, as a refinement and expansion of the specific implementation of the above embodiment, in order to fully illustrate the specific implementation process of this embodiment, another method for determining the hydraulic preload force of a double-headed high-strength bolt is provided, such as Figure 2 As shown, the method includes:

[0062] Step 201, respectively determining a first length of the stud high-strength bolt screwed into a preset first workpiece, a second length of the stud high-strength bolt meshing with a preset nut, and a third length of the stud high-strength bolt clamped by a preset second workpiece;

[0063] In this embodiment, if you want to calculate the effective stretching length of the double-headed high-strength bolt, you can first determine the first length, second length and third length corresponding to the double-headed high-strength bolt. The first length is the length of the double-headed high-strength bolt screwed into the preset first workpiece, the second length is the length of the double-headed high-strength bolt meshing with the preset nut, and the third length is the length of the preset second workpiece clamping the double-headed high-strength bolt. For example, Figure 3As shown, the first length is L3, the first workpiece is preset to be workpiece 1, the second length is L1, the third length is L2, and the second workpiece is preset to be workpiece 2.

[0064] Step 202, determining an effective tensile length corresponding to the stud high-strength bolt based on the first length, the second length, and the third length;

[0065] In this embodiment, after determining the first length, the second length, and the third length of the double-headed high-strength bolt, the effective tensile length of the double-headed high-strength bolt can be calculated based on the first length, the second length, and the third length. Figure 3 As shown, the first length is L3, the second length can be L1, and the third length can be L2, then the effective tensile length L of the double-headed high-strength bolt can be, L=0.5L1+L2+0.5L3.

[0066] Step 203, obtaining the effective stretching length and effective stretching diameter corresponding to the double-headed high-strength bolt, and determining the bolt stretching size factor corresponding to the double-headed high-strength bolt;

[0067] Step 204, when the bolt tensile size factor is between 2 and 7, determining the preload loss ratio corresponding to the double-headed high-strength bolt according to the bolt tensile size factor;

[0068] In this embodiment, the effective stretching length and effective stretching diameter of the double-headed high-strength bolt are obtained, and the bolt stretching size factor of the double-headed high-strength bolt is determined according to the effective stretching length and the effective stretching diameter. After determining the bolt stretching size factor of the double-headed high-strength bolt, when the bolt stretching size factor is between 2 and 7, it means that the double-headed high-strength bolt can use this method to calculate the actual hydraulic preload, then the preload loss ratio of the double-headed high-strength bolt can be determined based on the bolt stretching size factor. After judgment, if the bolt stretching size factor is not between 2 and 7, it means that the double-headed high-strength bolt cannot use this method to calculate the actual hydraulic preload, then the next calculation can be stopped. In addition, when it is judged that the bolt stretching size factor is not between 2 and 7, an error prompt can also be output to prompt relevant personnel that this double-headed high-strength bolt is not suitable for this hydraulic preload determination method.

[0069] Step 205, obtaining the hydraulic loading pressure and hydraulic stretching area corresponding to when the hydraulic loading tool stretches the double-headed high-strength bolt, and determining the hydraulic installation stretching force of the hydraulic loading tool according to the hydraulic loading pressure and the hydraulic stretching area;

[0070] In this embodiment, after determining the preload loss ratio corresponding to the double-headed high-strength bolt, the hydraulic loading pressure corresponding to the hydraulic loading tool can be further obtained, which can be specifically obtained from the pressure gauge corresponding to the hydraulic loading tool. In addition, it is also necessary to obtain the hydraulic stretching area corresponding to the hydraulic loading tool when stretching the double-headed high-strength bolt. Specifically, the hydraulic stretching area can be the area in the hydraulic oil action oil chamber that is perpendicular to the axial direction of the double-headed high-strength bolt. Then, the hydraulic installation stretching force of the hydraulic loading tool can be determined based on the hydraulic loading pressure and the hydraulic stretching area. For example, if the hydraulic loading pressure is P and the hydraulic stretching area is A, then the hydraulic installation stretching force is F1=P·A.

[0071] Step 206, determining the tensile force loss value of the double-headed high-strength bolt based on the hydraulic installation tensile force and the preload loss ratio; determining the hydraulic preload corresponding to the double-headed high-strength bolt according to the hydraulic installation tensile force and the tensile force loss value.

[0072] In this embodiment, after the hydraulic installation tensile force is determined, the tensile force loss value of the double-headed high-strength bolt can be determined based on the hydraulic installation tensile force and the preload loss ratio. The tensile force loss value can be obtained by multiplying the hydraulic installation tensile force by the preload loss value. The tensile force loss value can be used to determine the tensile force lost when the hydraulic loading tool pressurizes the double-headed high-strength bolt. For example, if the hydraulic installation tensile force is F1 and the preload loss ratio is R, then the tensile force loss value is F'=F1·R. Then, the actual hydraulic preload corresponding to the double-headed high-strength bolt can be determined by the difference between the hydraulic installation tensile force and the tensile force loss value acting on the double-headed high-strength bolt, that is, the actual hydraulic preload is F=F1-F'.

[0073] In addition, the actual preload ratio can be determined by the preload loss ratio. For example, the preload loss ratio can be R, then the actual preload ratio can be (1-R). Then, the actual hydraulic preload corresponding to the double-headed high-strength bolt can be determined by the hydraulic installation tensile force and the actual preload ratio. For example, if the hydraulic installation tensile force is F1, then the actual hydraulic preload is F=F1·(1-R).

[0074] In the embodiment of the present application, optionally, the “determining the preload loss ratio corresponding to the double-headed high-strength bolt according to the bolt stretching size factor” in step 204 specifically includes: according to the bolt stretching size factor, taking the bolt stretching size factor as the independent variable of the preset preload loss ratio calculation function, calculating the preload loss ratio corresponding to the double-headed high-strength bolt, and the preset preload loss ratio calculation function is:

[0075] R=0.0037K 2 -0.0502K+0.4342,

[0076] Wherein, K represents the bolt tensile size factor, and R represents the preload loss ratio.

[0077] In this embodiment, after the bolt stretch size factor is determined, the preload loss ratio can be further determined by presetting the preload loss ratio calculation function. Specifically, the presetting preload loss ratio calculation function can be R=0.0037K 2 -0.0502K+0.4342, this function is obtained through finite element simulation and experiment, such as Figure 4 As shown, K represents the bolt tensile size factor, R represents the preload loss ratio, Figure 4 The curve corresponding to the solid line is the curve obtained by finite element simulation and experiment, and the curve corresponding to the dotted line is the curve obtained by fitting. It should be noted that the applicable range of the preset preload loss ratio calculation function is K between 2 and 7. For the above formula, the specific number of digits after the decimal point can be rounded according to actual conditions, and is not limited here. Taking the bolt tensile size factor as the independent variable of the preset preload loss ratio calculation function, the preload loss ratio of the double-headed high-strength bolt can be obtained.

[0078] In an embodiment of the present application, optionally, after "determining the hydraulic preload corresponding to the stud-headed high-strength bolt" in step 206, the method further includes: determining the safety margin of the stud-headed high-strength bolt based on the hydraulic preload corresponding to the stud-headed high-strength bolt and a preset required preload, and outputting a safety prompt message when the safety margin is greater than or equal to a preset margin threshold.

[0079] In this embodiment, after determining the hydraulic preload corresponding to the double-headed high-strength bolt, the safety margin corresponding to the double-headed high-strength bolt can be further determined according to the preset required preload. Here, the preset required preload can be the minimum preload to ensure the safety of the bolt connection. Specifically, the safety margin can be obtained by dividing the determined hydraulic preload corresponding to the double-headed high-strength bolt by the preset required preload. Then, the safety margin can be compared with the preset margin threshold. When the safety margin is greater than or equal to the preset margin threshold, it means that the structural connection of the bolt is reliable under this hydraulic preload, and then a safety prompt message can be output accordingly to prompt the user that the connection structure is safe under this hydraulic preload. In addition, when the safety margin is less than the preset margin threshold, a warning prompt message can also be output to prompt the user that the connection structure is dangerous under this hydraulic preload.

[0080] In the embodiment of the present application, optionally, the effective tensile diameter corresponding to the double-headed high-strength bolt is the minimum diameter corresponding to the double-headed high-strength bolt.

[0081] In this embodiment, the effective tensile diameter of the stud high-strength bolt may be the minimum diameter among the various diameters of the stud high-strength bolt. For a standard stud high-strength bolt, the minimum diameter corresponding to the stud high-strength bolt may be automatically obtained based on the model of the stud high-strength bolt uploaded or selected by the user; for a modified stud high-strength bolt, the minimum diameter of the stud high-strength bolt may be measured by the user and automatically uploaded.

[0082] Further, as Figure 1 The specific implementation of the method, the embodiment of the present application provides a device for determining the hydraulic preload force of a double-headed high-strength bolt, such as Figure 5 As shown, the device comprises:

[0083] A stretching size factor determination module is used to obtain an effective stretching length and an effective stretching diameter corresponding to the double-headed high-strength bolt, and determine a bolt stretching size factor corresponding to the double-headed high-strength bolt;

[0084] A preload loss ratio determination module, used to determine the preload loss ratio corresponding to the double-headed high-strength bolt according to the bolt tension size factor when the bolt tension size factor is between 2 and 7;

[0085] The hydraulic preload force determination module is used to obtain the hydraulic installation tensile force of the hydraulic loading tool corresponding to the double-headed high-strength bolt, and determine the hydraulic preload force corresponding to the double-headed high-strength bolt based on the hydraulic installation tensile force and the preload force loss ratio.

[0086] Optionally, the preload force loss ratio determination module is specifically used to:

[0087] According to the bolt stretching size factor, the bolt stretching size factor is used as the independent variable of the preset preload loss ratio calculation function to calculate the preload loss ratio corresponding to the double-headed high-strength bolt. The preset preload loss ratio calculation function is:

[0088] R=0.0037K 2 -0.0502K+0.4342,

[0089] Wherein, K represents the bolt tensile size factor, and R represents the preload loss ratio.

[0090] Optionally, the hydraulic preload force determination module is specifically used to:

[0091] Determining a tensile force loss value of the double-headed high-strength bolt based on the hydraulic installation tensile force and the preload force loss ratio;

[0092] The hydraulic preload force corresponding to the double-headed high-strength bolt is determined according to the hydraulic installation tensile force and the tensile force loss value.

[0093] Optionally, the device further comprises:

[0094] The effective stretching length determination module is used to determine the first length of the stud high-strength bolt screwed into a preset first workpiece, the second length of the stud high-strength bolt meshing with a preset nut, and the third length of the stud high-strength bolt clamped by a preset second workpiece before obtaining the effective stretching length and the effective stretching diameter corresponding to the stud high-strength bolt; based on the first length, the second length and the third length, determine the effective stretching length corresponding to the stud high-strength bolt.

[0095] Optionally, the hydraulic preload force determination module is further used to:

[0096] The hydraulic loading pressure and the hydraulic stretching area corresponding to when the hydraulic loading tool stretches the double-headed high-strength bolt are obtained, and the hydraulic installation stretching force of the hydraulic loading tool is determined according to the hydraulic loading pressure and the hydraulic stretching area.

[0097] Optionally, the device further comprises:

[0098] A safety margin determination module is used to determine the safety margin of the double-headed high-strength bolt based on the hydraulic preload corresponding to the double-headed high-strength bolt and the preset required preload after the hydraulic preload corresponding to the double-headed high-strength bolt is determined, and output a safety prompt message when the safety margin is greater than or equal to the preset margin threshold.

[0099] Optionally, the effective tensile diameter corresponding to the stud high-strength bolt is the minimum diameter corresponding to the stud high-strength bolt.

[0100] It should be noted that for other corresponding descriptions of the functional units involved in the device for determining the hydraulic preload force of a double-headed high-strength bolt provided in the embodiment of the present application, reference can be made to Figure 1 to Figure 2 The corresponding description in the method will not be repeated here.

[0101] Based on the above Figure 1 to Figure 2 The method shown in the embodiment of the present application is accordingly provided with a storage medium on which a computer program is stored, and when the computer program is executed by a processor, the above-mentioned Figure 1 to Figure 2 The method for determining the hydraulic preload force of double-headed high-strength bolts is shown.

[0102] Based on this understanding, the technical solution of the present application can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.), and includes a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each implementation scenario of the present application.

[0103] Based on the above Figure 1 to Figure 2 The method shown, and Figure 5 In order to achieve the above-mentioned purpose, the embodiment of the present application further provides a computer device, which can be a personal computer, a server, a network device, etc. The computer device includes a storage medium and a processor; the storage medium is used to store a computer program; the processor is used to execute the computer program to achieve the above-mentioned Figure 1 to Figure 2 The method for determining the hydraulic preload force of double-headed high-strength bolts is shown.

[0104] Optionally, the computer device may further include a user interface, a network interface, a camera, a radio frequency (RF) circuit, a sensor, an audio circuit, a WI-FI module, etc. The user interface may include a display, an input unit such as a keyboard, etc., and the optional user interface may also include a USB interface, a card reader interface, etc. The network interface may optionally include a standard wired interface, a wireless interface (such as a Bluetooth interface, a WI-FI interface), etc.

[0105] Those skilled in the art will appreciate that the computer device structure provided in this embodiment does not limit the computer device, and may include more or fewer components, or a combination of certain components, or different component arrangements.

[0106] The storage medium may also include an operating system and a network communication module. The operating system is a program that manages and saves the hardware and software resources of the computer device, and supports the operation of information processing programs and other software and / or programs. The network communication module is used to realize communication between the components inside the storage medium, and communication with other hardware and software in the physical device.

[0107] Through the description of the above implementation methods, those skilled in the art can clearly understand that the present application can be implemented by means of software plus the necessary general hardware platform, or by hardware. The effective stretching length and effective stretching diameter of the double-headed high-strength bolt are obtained, and the bolt stretching size factor of the double-headed high-strength bolt is determined according to the effective stretching length and the effective stretching diameter. After determining the bolt stretching size factor corresponding to the double-headed high-strength bolt, when the bolt stretching size factor is between 2 and 7, the preload loss ratio of the double-headed high-strength bolt can be determined based on the bolt stretching size factor. Through the preload loss ratio, the relationship between the hydraulic preload applied to the double-headed high-strength bolt and the lost preload can be determined. Next, the hydraulic installation tensile force when the hydraulic loading tool pressurizes the double-headed high-strength bolt is obtained, and based on the hydraulic installation tensile force and the preload loss ratio, the actual hydraulic preload of the double-headed high-strength bolt can be further determined. The embodiment of the present application first determines the bolt tensile size factor, then determines the preload loss ratio corresponding to the double-headed high-strength bolt based on the bolt tensile size factor, and finally determines the actual hydraulic preload of the double-headed high-strength bolt. The actual hydraulic preload of the double-headed high-strength bolt with a bolt tensile size factor between 2 and 7 can be determined effectively and simply, which is beneficial to improving the accuracy of determining the hydraulic preload of the double-headed high-strength bolt. While improving the safety of product connections, it can assist designers and mechanical simulation personnel to more accurately calculate the connection status of the product, thereby improving the efficiency of product connection analysis.

[0108] Those skilled in the art will appreciate that the accompanying drawings are only schematic diagrams of a preferred implementation scenario, and the modules or processes in the accompanying drawings are not necessarily necessary for implementing the present application. Those skilled in the art will appreciate that the modules in the devices in the implementation scenario can be distributed in the devices of the implementation scenario according to the description of the implementation scenario, or can be changed accordingly and located in one or more devices different from the present implementation scenario. The modules of the above-mentioned implementation scenario can be combined into one module, or can be further split into multiple submodules.

[0109] The above serial numbers of this application are only for description and do not represent the advantages and disadvantages of the implementation scenarios. The above disclosure is only a few specific implementation scenarios of this application, but this application is not limited to them, and any changes that can be thought of by technicians in this field should fall within the scope of protection of this application.

Claims

1. A method for determining the hydraulic preload force of a double-headed high-strength bolt, characterized in that: include: Obtaining the effective tensile length and effective tensile diameter corresponding to the double-headed high-strength bolt, and determining the bolt tensile size factor corresponding to the double-headed high-strength bolt; When the bolt tensile size factor is between 2 and 7, the preload loss ratio corresponding to the double-headed high-strength bolt is determined according to the bolt tensile size factor; Obtaining the hydraulic installation tensile force of the hydraulic loading tool corresponding to the double-headed high-strength bolt, and determining the hydraulic preload force corresponding to the double-headed high-strength bolt based on the hydraulic installation tensile force and the preload force loss ratio; Determining the preload loss ratio corresponding to the double-headed high-strength bolt according to the bolt tensile size factor specifically includes: According to the bolt stretching size factor, the bolt stretching size factor is used as the independent variable of the preset preload loss ratio calculation function to calculate the preload loss ratio corresponding to the double-headed high-strength bolt. The preset preload loss ratio calculation function is: R=0.0037K 2 -0.0502K+0.4342, Wherein, K represents the bolt tensile size factor, and R represents the preload loss ratio.

2. The method according to claim 1, characterized in that The determining of the hydraulic preload force corresponding to the double-headed high-strength bolt based on the hydraulic installation tensile force and the preload force loss ratio specifically includes: Determining a tensile force loss value of the double-headed high-strength bolt based on the hydraulic installation tensile force and the preload force loss ratio; The hydraulic preload force corresponding to the double-headed high-strength bolt is determined according to the hydraulic installation tensile force and the tensile force loss value.

3. The method according to claim 1, characterized in that Before obtaining the effective stretching length and effective stretching diameter corresponding to the double-headed high-strength bolt, the method further includes: Respectively determine a first length of the stud high-strength bolt screwed into a preset first workpiece, a second length of the stud high-strength bolt meshing with a preset nut, and a third length of the stud high-strength bolt clamped by a preset second workpiece; Based on the first length, the second length and the third length, an effective tensile length corresponding to the stud high-strength bolt is determined.

4. The method according to claim 1, characterized in that: The step of obtaining the hydraulic installation tensile force of the hydraulic loading tool corresponding to the double-headed high-strength bolt specifically includes: The hydraulic loading pressure and the hydraulic stretching area corresponding to when the hydraulic loading tool stretches the double-headed high-strength bolt are obtained, and the hydraulic installation stretching force of the hydraulic loading tool is determined according to the hydraulic loading pressure and the hydraulic stretching area.

5. The method according to any one of claims 1 to 4, characterized in that After determining the hydraulic preload force corresponding to the double-headed high-strength bolt, the method further includes: Based on the hydraulic preload force corresponding to the double-headed high-strength bolt and the preset required preload force, the safety margin of the double-headed high-strength bolt is determined, and when the safety margin is greater than or equal to the preset margin threshold, a safety prompt message is output.

6. The method according to claim 1, characterized in that The effective tensile diameter corresponding to the double-headed high-strength bolt is the minimum diameter corresponding to the double-headed high-strength bolt.

7. A device for determining the hydraulic preload force of a double-headed high-strength bolt, characterized in that: include: A stretching size factor determination module is used to obtain an effective stretching length and an effective stretching diameter corresponding to the double-headed high-strength bolt, and determine a bolt stretching size factor corresponding to the double-headed high-strength bolt; A preload loss ratio determination module, used to determine the preload loss ratio corresponding to the double-headed high-strength bolt according to the bolt tension size factor when the bolt tension size factor is between 2 and 7; A hydraulic preload force determination module, used to obtain the hydraulic installation tensile force of the hydraulic loading tool corresponding to the double-headed high-strength bolt, and determine the hydraulic preload force corresponding to the double-headed high-strength bolt based on the hydraulic installation tensile force and the preload force loss ratio; The preload force loss ratio determination module is specifically used for: According to the bolt stretching size factor, the bolt stretching size factor is used as the independent variable of the preset preload loss ratio calculation function to calculate the preload loss ratio corresponding to the double-headed high-strength bolt. The preset preload loss ratio calculation function is: R=0.0037K 2 -0.0502K+0.4342, Wherein, K represents the bolt tensile size factor, and R represents the preload loss ratio.

8. A storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method according to any one of claims 1 to 6 is implemented.

9. A computer device comprising a storage medium, a processor, and a computer program stored in the storage medium and executable on the processor, characterized in that: When the processor executes the computer program, the method according to any one of claims 1 to 6 is implemented.

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