A shift fork, a structure checking method and device for a shift fork

Abstract

The application discloses a shift fork, a structure checking method and device of the shift fork, and the checking method is used in a finite element analysis environment, the axial assembly gap of the shift fork and the gear sleeve is obtained, the side contact surface of the shift fork is configured as a convex curved surface, the shift fork can be simulated and applied in the finite element analysis environment, the target position is determined on the convex curved surface according to the axial assembly gap, the shift fork can be accurately converged when the finite element analysis is performed, the load is loaded on the preset loading point of the shift fork to obtain the loading deformation of the shift fork on the target position, the structure checking result of the shift fork is determined according to the loading deformation, the whole checking process is simulated and checked in the finite element analysis environment, the trial production process of the existing experimental checking scheme is reduced, the checking efficiency of the shift fork structure is improved, and therefore the shift fork meeting the allowable requirements can be efficiently designed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of shift fork structure checking, and particularly relates to a shift fork, a shift fork structure checking method and device. BACKGROUND

[0002] The shift fork is usually an execution component in a gear shifting mechanism, such as a gear shifting fork in a vehicle gearbox. The gear shifting fork is one of the components of the gear shifting mechanism of the gearbox, and mainly functions to drive the synchronizer to complete gear shifting operation under the driving of a gear shifting slider. In order to determine whether the gear shifting fork meets the design requirements, the part needs to be trial-produced and then loaded for testing. If the test result does not pass, the design size needs to be modified for trial-production and loading test again until the test result meets the design requirements. The structure is checked by implementing the method, and a long period is required.

[0003] Therefore, how to improve the checking efficiency of the shift fork structure is a technical problem to be solved at present. SUMMARY

[0004] The shift fork, the shift fork structure checking method and device improve the checking efficiency of the shift fork structure design.

[0005] The embodiments of the present application provide the following solutions.

[0006] In a first aspect, the embodiments of the present application provide a shift fork structure checking method applied to a finite element analysis environment, and the method comprises the following steps.

[0007] An axial assembly gap of a shift fork and a gear sleeve is obtained, wherein a side contact surface of the shift fork is a convex surface.

[0008] A target position is determined on the convex surface according to the axial assembly gap, wherein the target position is a position on the shift fork in contact with the gear sleeve.

[0009] A load is loaded on a preset loading point of the shift fork to obtain a loading deformation of the target position on the shift fork.

[0010] A structure checking result of the shift fork is determined according to the loading deformation.

[0011] In an optional embodiment, the convex surface comprises an upper contact section, a middle contact section and a lower contact section, and the target position is determined on the convex surface according to the axial assembly gap, comprising the following steps.

[0012] When the axial assembly gap is smaller than a preset gap interval, the lower contact section is determined as the target position.

[0013] When the axial assembly gap is in the preset gap interval, the middle contact section is determined as the target position.

[0014] When the axial assembly gap is greater than the preset gap interval, the upper contact section is determined as the target position.

[0015] In an alternative embodiment, before the end surface deformation of the shift fork is obtained by loading the load on the preset load point of the shift fork, the method further comprises:

[0016] According to the axial single-side gap between the shift fork and the gear sleeve, the side contact surface of the shift fork is adjusted to be in contact with the gear sleeve.

[0017] In an alternative embodiment, the loading deformation of the shift fork at the target position is obtained by loading the load on the preset load point of the shift fork, comprising:

[0018] According to the loading force of the loading load, the area of the target position is determined.

[0019] The loading force is loaded on the preset load point, and the reaction force deformation of the area of the shift fork is determined as the loading deformation.

[0020] In an alternative embodiment, the convex curved surface comprises an upper contact section, a middle contact section and a lower contact section, and the area of the target position is determined according to the loading force of the loading load, comprising:

[0021] When the loading force is less than a preset threshold, the area of the target position is determined as the area of the lower contact section.

[0022] When the loading force is not less than a preset threshold, the area of the target position is determined as the sum of the areas of the upper contact section, the middle contact section and the lower contact section.

[0023] In an alternative embodiment, the structure checking result of the shift fork is determined according to the loading deformation, comprising:

[0024] According to the loading gap and the deformation amount of the loading deformation, an actual deformation amount is obtained, wherein the loading gap is the gap between the shift fork and the gear sleeve in the loading direction.

[0025] When the actual deformation amount is less than a deformation threshold, the structure checking of the shift fork is determined to be qualified.

[0026] When the actual deformation amount is not less than a deformation threshold, the structure checking of the shift fork is determined to be unqualified, and the structure of the shift fork is adjusted for repeated checking until the actual deformation amount is less than the deformation threshold.

[0027] In a second aspect, the embodiments of the present application further provide a shift fork, which is subjected to structure checking by the method of any one of the first aspect.

[0028] In a third aspect, the embodiments of the present application further provide a structure checking device of a shift fork, which is applied to a finite element analysis environment, and the device comprises:

[0029] an acquisition module, configured to acquire an axial assembly gap of the shift fork and the gear sleeve, wherein a side contact surface of the shift fork is a convex surface;

[0030] a first determination module, configured to determine a target position on the convex surface according to the axial assembly gap, wherein the target position is a position on the shift fork that is in contact with the gear sleeve;

[0031] an obtaining module, configured to load a load on a preset loading point of the shift fork, and obtain a loading deformation of the shift fork at the target position;

[0032] a second determination module, configured to determine a structure checking result of the shift fork according to the loading deformation.

[0033] In a fourth aspect, the embodiments of the present application further provide an electronic device, comprising a processor and a memory, the memory is coupled to the processor, and the memory stores instructions, when the instructions are executed by the processor, the electronic device performs the steps of the method in any one of the first aspect.

[0034] In a fifth aspect, the embodiments of the present application further provide a computer readable storage medium, which stores a computer program, when the program is executed by a processor, the steps of the method in any one of the first aspect are implemented.

[0035] Compared with the prior art, the shift fork, the structure checking method and the device of the present application have the following advantages:

[0036] The structure checking method of the present application, in the finite element analysis environment, by acquiring the axial assembly gap of the shift fork and the gear sleeve, configuring the side contact surface of the shift fork as a convex surface, making the shift fork applicable to simulation in the finite element analysis environment, determining the target position on the convex surface according to the axial assembly gap, ensuring that the shift fork can converge accurately when performing finite element analysis, loading a load on the preset loading point of the shift fork to obtain the loading deformation of the shift fork at the target position, determining the structure checking result of the shift fork according to the loading deformation, the whole checking process is simulated and checked in the finite element analysis environment, reducing the trial process of the existing experimental checking scheme, improving the checking efficiency of the shift fork structure, and thus efficiently designing the shift fork that meets the allowable requirements. BRIEF DESCRIPTION OF DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present specification or the prior art, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description only represent some embodiments of the present specification, and all other drawings obtained by those of ordinary skill in the art based on these drawings without creative effort fall within the protection scope of the embodiments of the present specification.

[0038] Figure 1 A flowchart of a structure checking method of a shift fork provided by the embodiments of the present application is shown in FIG. 1.

[0039] Figure 2 A connection structure diagram of a shift fork and a gear sleeve provided by the embodiments of the present application is shown in FIG. 2.

[0040] Figure 2-1 A cross-sectional structure diagram of a shift fork provided by the embodiments of the present application is shown in FIG. 3.

[0041] Figure 3 A grid structure diagram of a side contact surface of a shift fork provided by the embodiments of the present application is shown in FIG. 4.

[0042] Figure 4 A diagram of a contact point of a finite element analysis provided by the embodiments of the present application is shown in FIG. 5.

[0043] Figure 5 A statement diagram of actual deformation calculation provided by the embodiments of the present application is shown in FIG. 6.

[0044] Figure 6 Another flowchart of a structure checking of a shift fork provided by the embodiments of the present application is shown in FIG. 7.

[0045] Figure 7 A structure diagram of a structure checking device of a shift fork provided by the embodiments of the present application is shown in FIG. 8. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments only represent some embodiments of the present specification, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art fall within the protection scope of the embodiments of the present application.

[0047] The shift fork, along its length, comprises a fork lug, a fork hole, and a fork opening. The fork hole is mounted on the shift fork shaft via a bushing. During use, the fork lug is driven to move the shift fork along the shift fork shaft, thereby actuating the gear sleeve within the fork opening to perform the shifting action. The structural verification of the shift fork within the gearbox examines its strength, stiffness, and shifting efficiency, all assessed experimentally. For strength, the shift fork shaft passes through the fork hole to fix the shift fork, and the fork's fork prongs are placed inside the gear sleeve fixture. A load is applied to the fork lug, and the driving force is gradually increased until the shift fork breaks. The load force at breakage is recorded. For stiffness, the shift fork shaft passes through the fork hole to fix the shift fork, and the fork's fork prongs are placed inside the gear sleeve fixture. A load is applied to the fork lug, and the displacement of the target position is recorded during the force application process. When evaluating shifting efficiency, the shift fork shaft is passed through the fork hole to fix the shift fork, ensuring that the force sensors at the three quadrant points within the fork opening are on the same plane. A load is applied to the fork lugs, and the force sensors collect the force values ​​at each quadrant point. This experimental method requires prefabricated shift forks based on the designed structure for verification, which is time-consuming and labor-intensive. The following embodiment of the invention will specifically illustrate how to perform simulation verification in a finite element analysis environment.

[0048] Please see Figure 1 , Figure 1 A flowchart of a structural verification method for a shift fork provided in an embodiment of the present invention, applied in a finite element analysis environment, the method comprising:

[0049] S11. Obtain the axial assembly clearance between the shift fork and the toothed sleeve, wherein the side contact surface of the shift fork is a convex curved surface.

[0050] Specifically, the finite element analysis environment can be configured based on existing finite element analysis software, such as Abaqus. In this environment, both the shift fork and the gear sleeve are mesh models. Please refer to [link / reference]. Figure 2 The toothed sleeve 2 is installed inside the fork of the shift fork 1. The fork of the shift fork has a semi-circular structure, and the three quadrant points of the fork are in contact with the toothed sleeve 2. When the driving fork lug 4 moves the shift fork 1 along the shift fork shaft 5, the side contact surface 3 is in rigid contact with the toothed sleeve 2. A plastic-coated block can also be installed on the outer periphery of the convex curved surface 3 of the shift fork 1 to buffer the rigid contact between the shift fork 1 and the toothed sleeve 2. After installing the plastic-coated block, the side contact surface is the side surface of the plastic-coated block. The side contact surface is configured as a convex curved surface, which can ensure model convergence in the finite element analysis environment. The axial assembly clearance represents the gap between the side contact surface and the toothed sleeve. After obtaining the axial assembly clearance, proceed to step S12.

[0051] S12. Determine the target position on the convex surface according to the axial assembly clearance, wherein the target position is the position on the shift fork that contacts the toothed sleeve.

[0052] Specifically, due to the axial assembly clearance between the shift fork and the toothed sleeve, different axial assembly clearances result in different angular offsets between them when the shift fork moves the toothed sleeve. A larger axial assembly clearance leads to a larger angular offset, and vice versa. Therefore, the contact position between the shift fork and the toothed sleeve will change accordingly under different axial assembly clearances. To ensure convergence of the finite element analysis model, a target position is determined on the convex surface to ensure accurate convergence of the shift fork under force. Convergence in the finite element environment can be understood as the sequence of finite element solutions converging to an exact solution as the model mesh is gradually refined; or, when the element size is fixed, the more degrees of freedom each element has, the closer the finite element solution is to an exact solution; and the ability to characterize the deformation of the shift fork under force.

[0053] In one specific implementation, please refer to Figure 2-1 The convex surface includes an upper contact segment a, a middle contact segment b, and a lower contact segment c. The target position is determined on the convex surface based on the axial assembly clearance, including:

[0054] When the axial assembly clearance is less than the preset clearance range, the lower contact section is determined as the target position; when the axial assembly clearance is within the preset clearance range, the middle contact section is determined as the target position; when the axial assembly clearance is greater than the preset clearance range, the upper contact section is determined as the target position.

[0055] For details, please refer to Figure 3 The convex surface is divided into upper contact segment a, middle contact segment b, and lower contact segment c. The corresponding contact segment is selected according to different axial assembly gaps. This can ensure the convergence of the model calculation and the accuracy of the results. The gap range can be determined based on the simulation experience of the technicians or through calibration experiments. For example, the gap range can be set to 0.05-0.15mm. After determining the target position on the convex surface according to the axial assembly gap, the process proceeds to step S13.

[0056] S13. Apply a load to the preset loading point of the shift fork to obtain the loading deformation of the shift fork at the target position.

[0057] For details, please continue reading. Figure 2 and Figure 2-1 The preset loading point can be set to the position of the fork lug 4 of shift fork 1. The loading load can be determined according to the design requirements of the shift fork. The higher the requirements for the strength, stiffness and shifting efficiency of the shift fork, the larger the loading load should be; conversely, the smaller the loading load should be. In the finite element analysis environment, after the load is applied to the shift fork, the shift fork will undergo corresponding loading deformation, which represents the convergence of the model.

[0058] During simulation, different loading loads will cause the convex surface and the gear sleeve to have contact surfaces of different sizes. The larger the loading load, the larger the contact surface will be. If the contact surface remains unchanged, it may cause the calculation to fail to converge or the simulation to be inaccurate.

[0059] To solve the above problems, in one specific implementation, a load is applied to a preset loading point of the shift fork to obtain the loading deformation of the shift fork at the target position, including:

[0060] The area of ​​the target location is determined based on the loading force of the applied load; the loading force is applied to the preset loading point, and the deformation of the area area in response to the reaction force of the shift fork is determined as the loading deformation.

[0061] Specifically, the area of ​​the target location represents the force-bearing area of ​​the shift fork and the gear sleeve when loaded. The larger the loading force, the larger the area, and vice versa. After determining the area, the loading force is applied to the preset loading point. The shift fork will drive the gear sleeve to move. Since the forces are mutual, the area exerts forces of the same magnitude but opposite direction on both the shift fork and the gear sleeve. To verify the structure of the shift fork, the deformation of the shift fork under the reaction force is defined as the loading deformation.

[0062] In one specific implementation, the convex surface includes an upper contact segment a, a middle contact segment b, and a lower contact segment c. The area of ​​the target location is determined based on the applied load force, including:

[0063] When the loading force is less than the preset threshold, the area of ​​the target location is determined as the area of ​​the lower contact segment; when the loading force is not less than the preset threshold, the area of ​​the target location is determined as the sum of the areas of the upper contact segment, the middle contact segment, and the lower contact segment.

[0064] Specifically, the convex surface can be divided into upper contact segment a, middle contact segment b, and lower contact segment c in a 3:3:4 ratio. When the loading force is less than the preset threshold, it indicates that the loading force may cause a small deformation of the shift fork. To avoid the situation where the calculation does not converge, the area of ​​the target position is determined to be the area of ​​the lower contact segment. As the loading force increases, the axial assembly gap gradually decreases. The area of ​​the target position is determined to be the sum of the areas of the upper contact segment, middle contact segment, and lower contact segment. This avoids the situation where the simulation results are inaccurate due to incomplete contact surface settings, thereby improving the accuracy of model convergence during structural verification.

[0065] Please see Figure 4 When the applied force is less than a preset threshold, in the finite element analysis environment, during the analysis step loading, the small load analysis step first removes the two contact segments with larger gaps, namely the middle contact segment and the lower contact segment, to avoid calculation non-convergence. This can be implemented by editing text statements into the finite element software application; please refer to [link to relevant documentation]. Figure 5The middle and lower contact segments are removed using the remove statement. Similarly, as the load increases, the contact gap gradually decreases. Therefore, in the large load analysis step, the removed contacts are added back in, and the middle and lower contact segments are completed using the add statement to avoid inaccurate simulation results due to incomplete contact surface settings.

[0066] In practice, since the shift fork is inserted into the U-shaped slot of the gear sleeve, there is a certain axial unilateral gap along the movement direction of the shift fork when loading is applied to the shift fork. The simulation analysis of the applied load to the shift fork may affect the accuracy of the model convergence.

[0067] In one specific implementation, before applying a load to a preset loading point of the shift fork to obtain end face deformation of the shift fork, the following steps are also included:

[0068] Adjust the shift fork so that its side contact surface fits against the gear sleeve, based on the axial clearance on one side of the shift fork and the gear sleeve.

[0069] Specifically, axial unilateral clearance refers to the clearance on one side of the contact surface between the gear sleeve axially and laterally along the loading direction. Please refer to [further details]. Figure 2-1 If the loading direction is k, adjust the side contact surface p to fit against the toothed sleeve. In the finite element analysis environment, a forced displacement can be applied along the fork axis to ensure that the side contact surface of the fork fits against the toothed sleeve. During loading, the model convergence accuracy is better due to the tight fit between the fork and the toothed sleeve. After obtaining the loading deformation, proceed to step S14.

[0070] S14. Determine the structural verification result of the shift fork based on the loading deformation.

[0071] Specifically, the loading deformation characterizes the magnitude of the deformation of the shift fork after loading a load. The structural verification result of the shift fork can be determined by the loading deformation. When the structural verification meets the strength, stiffness and shifting efficiency of the shift fork, it can be determined that the verified structure can meet the allowable requirements.

[0072] In practice, when a load is applied, there may be a gap between the shift fork and the toothed sleeve along the axial direction of the toothed sleeve, which may affect the structural verification results.

[0073] In one specific implementation, the structural verification result of the shift fork is determined based on the loaded deformation, including:

[0074] The actual deformation is obtained based on the loading gap and the amount of deformation caused by the loading deformation. The loading gap is the gap between the shift fork and the toothed sleeve along the loading direction. When the actual deformation is less than the deformation threshold, the structural verification of the shift fork is deemed qualified. When the actual deformation is not less than the deformation threshold, the structural verification of the shift fork is deemed unqualified, and the structure of the shift fork is adjusted and the verification is repeated until the actual deformation is less than the deformation threshold.

[0075] Specifically, the loading clearance represents the gap between the shift fork and the gear sleeve along the axial direction of the gear sleeve. The difference between the deformation amount of the loading deformation and the loading clearance is the actual deformation. The deformation threshold is set according to the allowable requirements for the strength, stiffness, and shifting efficiency of the shift fork. When the actual deformation is less than the deformation threshold, it means that the structure of the shift fork can meet the allowable requirements for strength, stiffness, and shifting efficiency, and the structural verification of the shift fork is qualified. Conversely, if the actual deformation is not less than the deformation threshold, it means that the structure of the shift fork cannot meet the allowable requirements for strength, stiffness, and shifting efficiency. The structure of the shift fork is adjusted and the verification is repeated until the actual deformation is less than the deformation threshold.

[0076] The following embodiments of the present invention will be combined with Figure 6 This paper describes the overall structural verification process of a shift fork in a finite element environment. The task begins by simplifying the shift fork's data model (or numerical model) and establishing a finite element analysis network model. A contact relationship is established between the shift fork and the toothed sleeve. Based on the gap between the side contact surfaces of the shift fork and the toothed sleeve, corresponding contact segments are set. When the gap is less than 0.05 mm, the lower contact segment is set to contact the toothed sleeve; when the gap is between 0.05 and 0.15 mm, the middle contact segment is set to contact the toothed sleeve; and when the gap is between 0.15 and 0.25 mm, the upper contact segment is set to contact the toothed sleeve. Loads are applied to the finite element analysis model according to the shift fork's working state. To prevent non-convergence or inaccurate convergence in the finite element analysis, a forced displacement is added based on the axial unilateral gap between the toothed sleeve and the shift fork to ensure proper contact between them. Simultaneously, in small load analysis steps, the middle and upper contact segments are removed; in large load analysis steps, they are not removed. The finite element analysis results are then post-processed to obtain the structural verification results of the shift fork, at which point the task ends.

[0077] Based on the same inventive concept as the verification method, embodiments of the present invention also provide a shift fork, wherein the shift fork is structurally verified by any of the methods described in the first aspect.

[0078] Based on the same inventive concept as the verification method, this invention also provides a structural verification device for a shift fork, applicable in a finite element analysis environment. Please refer to [link to relevant documentation]. Figure 7 The device includes:

[0079] The acquisition module 701 is used to acquire the axial assembly clearance between the shift fork and the toothed sleeve, wherein the side contact surface of the shift fork is a convex curved surface.

[0080] The first determining module 702 is used to determine a target position on the convex surface according to the axial assembly clearance, wherein the target position is the position on the shift fork that contacts the toothed sleeve;

[0081] The module 703 is used to apply a load to a preset loading point of the shift fork and obtain the loading deformation of the shift fork at the target position.

[0082] The second determining module 704 is used to determine the structural verification result of the shift fork based on the loading deformation.

[0083] In an optional embodiment, the convex surface includes an upper contact segment, a middle contact segment, and a lower contact segment, and the first determining module includes:

[0084] The first determining submodule is used to determine the lower contact segment as the target position when the axial assembly gap is less than a preset gap range;

[0085] The second determining submodule is used to determine the middle contact section as the target position when the axial assembly gap is within a preset gap range;

[0086] The third determining submodule is used to determine the upper contact segment as the target position when the axial assembly gap is greater than a preset gap range.

[0087] In an optional embodiment, the device further includes:

[0088] An adjustment module is used to adjust the side contact surface of the shift fork to fit against the toothed sleeve based on the axial unilateral clearance between the shift fork and the toothed sleeve.

[0089] In one optional embodiment, the obtaining module includes:

[0090] The fourth determining submodule is used to determine the area of ​​the target location based on the loading force of the loaded load;

[0091] The fifth determining submodule is used to apply the loading force to the preset loading point and determine the force deformation of the area on the fork as the loading deformation.

[0092] In one optional embodiment, the convex surface includes an upper contact segment, a middle contact segment, and a lower contact segment, and the fourth determining submodule includes:

[0093] The first determining unit is used to determine the area of ​​the target location as the area of ​​the lower contact segment when the loading force is less than a preset threshold.

[0094] The second determining unit is used to determine the area of ​​the target location as the sum of the areas of the upper contact segment, the middle contact segment, and the lower contact segment when the loading force is not less than a preset threshold.

[0095] In one optional embodiment, the second determining module includes:

[0096] A submodule is used to obtain the actual deformation based on the loading gap and the deformation amount of the loading deformation, wherein the loading gap is the gap between the shift fork and the toothed sleeve along the loading direction;

[0097] The sixth determining submodule is used to determine that the structural verification of the shift fork is qualified when the actual deformation is less than the deformation threshold.

[0098] The seventh determining submodule is used to determine that the structural verification of the shift fork is unqualified when the actual deformation is not less than the deformation threshold, and to adjust the structure of the shift fork to repeat the verification until the actual deformation is less than the deformation threshold.

[0099] Based on the same inventive concept as the verification method, embodiments of the present invention also provide an electronic device, including a processor and a memory, wherein the memory is coupled to the processor and stores instructions that, when executed by the processor, cause the electronic device to perform the steps of any of the verification methods.

[0100] Based on the same inventive concept as the verification method, embodiments of the present invention also provide a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of any of the verification methods.

[0101] The technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:

[0102] The structural verification method of this invention, in a finite element analysis environment, obtains the axial assembly clearance between the shift fork and the gear sleeve, configures the side contact surface of the shift fork as a convex surface, enabling the shift fork to be simulated and applicable in the finite element analysis environment. Based on the axial assembly clearance, the target position is determined on the convex surface, ensuring that the shift fork can accurately converge during finite element analysis. A load is applied to the preset loading point of the shift fork to obtain the loading deformation of the shift fork at the target position. The structural verification result of the shift fork is determined based on the loading deformation. The entire verification process is simulated and verified in the finite element analysis environment, reducing the trial production process of existing experimental verification schemes, improving the verification efficiency of the shift fork structure, and thus efficiently designing a shift fork that meets the allowable requirements.

[0103] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0104] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (modules, systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0105] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0106] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0107] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention.

[0108] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A method for verifying the structure of a shift fork, characterized in that, When applied in a finite element analysis environment, the method includes: Obtain the axial assembly clearance between the shift fork and the toothed sleeve, wherein the side contact surface of the shift fork is a convex curved surface; The target position is determined on the convex surface according to the axial assembly clearance, wherein the target position is the position on the shift fork that contacts the toothed sleeve; A load is applied to a preset loading point of the shift fork to obtain the loading deformation of the shift fork at the target position; The structural verification result of the shift fork is determined based on the loading deformation.

2. The structural verification method for the shift fork according to claim 1, characterized in that, The convex surface includes an upper contact section, a middle contact section, and a lower contact section. Determining the target position on the convex surface based on the axial assembly clearance includes: When the axial assembly gap is less than a preset gap range, the lower contact segment is determined as the target position; When the axial assembly gap is within a preset gap range, the middle contact section is determined as the target position; When the axial assembly gap is greater than a preset gap range, the upper contact segment is determined as the target position.

3. The structural verification method for the shift fork according to claim 1, characterized in that, Before applying a load to the preset loading point of the shift fork to obtain the end face deformation of the shift fork, the method further includes: Adjust the side contact surface of the shift fork to fit against the toothed sleeve based on the axial unilateral clearance of the shift fork and the toothed sleeve.

4. The structural verification method for the shift fork according to claim 1, characterized in that, The process of applying a load to a preset loading point on the shift fork to obtain the load deformation of the shift fork at the target position includes: The area of ​​the target location is determined based on the loading force of the applied load. The loading force is applied to the preset loading point, and the deformation of the area of ​​the region in relation to the reaction force of the fork is determined as the loading deformation.

5. The structural verification method for the shift fork according to claim 4, characterized in that, The convex surface includes an upper contact section, a middle contact section, and a lower contact section. Determining the area of ​​the target location based on the loading force of the applied load includes: When the loading force is less than a preset threshold, the area of ​​the target location is determined as the area of ​​the lower contact segment; When the loading force is not less than a preset threshold, the area of ​​the target location is determined to be the sum of the areas of the upper contact segment, the middle contact segment, and the lower contact segment.

6. The structural verification method for the shift fork according to claim 1, characterized in that, The step of determining the structural verification result of the shift fork based on the loading deformation includes: The actual deformation is obtained based on the loading gap and the deformation amount of the loading deformation, wherein the loading gap is the gap between the shift fork and the toothed sleeve along the loading direction; When the actual deformation is less than the deformation threshold, the structural verification of the shift fork is determined to be qualified; When the actual deformation is not less than the deformation threshold, the structural verification of the shift fork is determined to be unqualified, and the structure of the shift fork is adjusted and the verification is repeated until the actual deformation is less than the deformation threshold.

7. A shift fork, characterized in that, The shift fork undergoes structural verification using the method described in any one of claims 1-6.

8. A structural verification device for a shift fork, characterized in that, The device, used in a finite element analysis environment, includes: The acquisition module is used to acquire the axial assembly clearance between the shift fork and the toothed sleeve, wherein the side contact surface of the shift fork is a convex curved surface; The first determining module is used to determine a target position on the convex surface based on the axial assembly clearance, wherein the target position is the position on the shift fork that contacts the toothed sleeve; The module is used to apply a load to a preset loading point of the shift fork and obtain the loading deformation of the shift fork at the target position. The second determining module is used to determine the structural verification result of the shift fork based on the loading deformation.

9. An electronic device, characterized in that, It includes a processor and a memory, the memory being coupled to the processor, the memory storing instructions that, when executed by the processor, cause the electronic device to perform the steps of the method of any one of claims 1-6.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When executed by a processor, the program implements the steps of the method described in any one of claims 1-6.

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