Self-aligning roller bearing modeling method, wind power transmission chain analysis method and related equipment

Abstract

The invention provides a self-aligning roller bearing modeling method, a wind power transmission chain analysis method and related equipment, and relates to the technical field of wind power generation. According to the method, an outer ring three-dimensional model is constructed based on the axial section size of a solid bearing outer ring of a target solid self-aligning roller bearing, and a roller inner ring assembly three-dimensional model is constructed according to the axial section size of a solid bearing inner ring of the target solid self-aligning roller bearing and the axial section size of a single solid roller. Carrying out model assembly on the outer ring three-dimensional model and the roller inner ring assembly three-dimensional model according to a friction contact relation, and carrying out bearing radial rigidity analysis on a target bearing finite element model obtained through assembly to obtain an expected equivalent elastic modulus of the target bearing finite element model; therefore, it is ensured that the target bearing finite element model can effectively represent the actual force transmission form of the solid self-aligning roller bearing in the scene of relative deflection of the inner ring and the outer ring of the bearing, and the accuracy of the finite element strength analysis result of loaded parts in a wind power transmission chain is improved.

Description

Technical Field

[0001] The present application relates to the technical field of wind power generation, and in particular to a spherical roller bearing modeling method, a wind power transmission chain analysis method and related equipment. Background Art

[0002] In the design and development process of large wind turbines, it is usually necessary to perform finite element strength analysis on many components in the wind power transmission chain to determine whether the ultimate strength and / or fatigue strength of the corresponding components under complex loads can meet the safety requirements. For wind power transmission chains, spherical roller bearings are usually used as main bearings to connect other load-bearing components. Therefore, when using finite element analysis to check the strength of other important load-bearing components in the wind power transmission chain, it is necessary to first perform finite element simplified modeling on the spherical roller bearings.

[0003] At present, the existing simplified finite element modeling methods of spherical roller bearings mostly use rod units or spring units to simplify the roller modeling. It is worth noting that when the spherical roller bearing model constructed by this type of modeling method is subjected to finite element strength analysis under the scenario of relative deflection of the inner and outer rings of the bearing, it usually shows the characteristics of the bearing transmitting bending moment, partially loses the self-aligning effect, causes the stress transmission path to change, and cannot effectively characterize the actual force transmission form of the solid spherical roller bearing under the actual working state, which seriously affects the accuracy of the finite element strength analysis results of the loaded components in the wind power transmission chain. Summary of the invention

[0004] In view of this, the purpose of this application is to provide a spherical roller bearing modeling method, a wind power transmission chain analysis method and computer equipment, to ensure that the simplified constructed spherical roller bearing finite element model can also effectively characterize the actual force transmission form of the solid spherical roller bearing under the scenario of relative deflection of the inner and outer rings of the bearing, and to improve the accuracy of the finite element strength analysis results of the load-bearing components in the wind power transmission chain.

[0005] In order to achieve the above purpose, the technical solution adopted in the embodiment of the present application is as follows:

[0006] In a first aspect, the present application provides a spherical roller bearing modeling method, the method comprising:

[0007] Acquire the actual bearing size of the target solid spherical roller bearing, wherein the actual bearing size includes the axial cross-sectional size of each of the solid bearing outer ring, the solid bearing inner ring and a single solid roller of the target solid spherical roller bearing;

[0008] According to the axial cross-sectional dimensions of the outer ring of the solid bearing, a three-dimensional model of the outer ring is constructed to match the contour of the outer ring of the solid bearing;

[0009] Constructing a three-dimensional model of the roller inner ring assembly according to the respective axial cross-sectional dimensions of the solid bearing inner ring and the single solid roller;

[0010] Assembling the outer ring three-dimensional model and the roller inner ring assembly three-dimensional model according to the friction contact relationship to obtain a target bearing finite element model of the target solid spherical roller bearing;

[0011] A bearing radial stiffness analysis is performed on the target bearing finite element model to obtain an expected equivalent elastic modulus of the target bearing finite element model associated with the roller inner ring assembly three-dimensional model, wherein the expected equivalent elastic modulus is used to ensure that the target bearing finite element model and the target solid spherical roller bearing maintain the same radial stiffness.

[0012] In an optional embodiment, the step of constructing a three-dimensional model of the outer ring matching the outer ring profile of the solid bearing according to the axial cross-sectional size of the outer ring of the solid bearing comprises:

[0013] Constructing a first two-dimensional graphic in a first plane, the corresponding graphic contour being consistent with the axial cross-sectional dimensions of the outer ring of the solid bearing;

[0014] Determine a first rotation axis on the side of the concave arc edge close to the first two-dimensional figure in the first plane, and rotate the first two-dimensional figure around the first rotation axis to construct a three-dimensional model to obtain the outer ring three-dimensional model, wherein the outer ring three-dimensional model is the same as the inner diameter of the outer ring of the solid bearing, and the first rotation axis and two parallel edges of the first two-dimensional figure connecting the concave arc edge are perpendicular to each other.

[0015] In an optional embodiment, the step of constructing a three-dimensional model of the roller inner ring assembly according to the respective axial cross-sectional dimensions of the solid bearing inner ring and the single solid roller comprises:

[0016] In the second plane, according to the relative position relationship between the two raceways on the inner ring of the solid bearing and the two rows of solid rollers in the same axial plane, a second two-dimensional graphic is constructed in which the corresponding graphic contour is connected by the axial cross-sectional dimensions of the inner ring of the solid bearing and the two solid rollers;

[0017] A second rotation axis is determined in the second plane, which is located on the side of the edge of the figure corresponding to the solid roller and away from the second two-dimensional figure, and the second two-dimensional figure is rotated around the second rotation axis to construct a three-dimensional model, so as to obtain the three-dimensional model of the roller inner ring assembly, wherein the three-dimensional model of the roller inner ring assembly is the same as the inner diameter of the inner ring of the solid bearing, and the long straight edge of the second two-dimensional figure close to the second rotation axis is parallel to the second rotation axis.

[0018] In an optional embodiment, the inner surface of the outer ring three-dimensional model matches the outer surface of the roller inner ring assembly three-dimensional model in size.

[0019] In a second aspect, the present application provides a spherical roller bearing modeling method, the method comprising:

[0020] Acquire the actual bearing size of the target solid spherical roller bearing, wherein the actual bearing size includes the axial cross-sectional size of each of the solid bearing outer ring, the solid bearing inner ring and a single solid roller of the target solid spherical roller bearing;

[0021] According to the axial cross-sectional dimensions of the inner ring of the solid bearing, a three-dimensional model of the inner ring matching the contour of the inner ring of the solid bearing is constructed;

[0022] Constructing a three-dimensional model of an outer ring-roller assembly according to the respective axial cross-sectional dimensions of the outer ring of the solid bearing and the single solid roller;

[0023] Assembling the inner ring three-dimensional model and the outer ring roller assembly three-dimensional model according to the friction contact relationship to obtain a target bearing finite element model of the target solid spherical roller bearing;

[0024] A bearing radial stiffness analysis is performed on the target bearing finite element model to obtain an expected equivalent elastic modulus of the target bearing finite element model associated with the outer ring roller assembly three-dimensional model, wherein the expected equivalent elastic modulus is used to ensure that the target bearing finite element model and the target solid spherical roller bearing maintain the same radial stiffness.

[0025] In an optional embodiment, the step of constructing a three-dimensional model of the inner ring that matches the profile of the inner ring of the solid bearing according to the axial cross-sectional size of the inner ring of the solid bearing comprises:

[0026] Constructing a third two-dimensional graphic in a third plane, the corresponding graphic contour being consistent with the axial cross-sectional dimensions of the inner ring of the solid bearing;

[0027] A third rotation axis is determined in the third plane, which is on the side of the raised edge away from the third two-dimensional figure, and the third two-dimensional figure is rotated around the third rotation axis to construct a three-dimensional model to obtain the inner ring three-dimensional model, wherein the inner ring three-dimensional model is the same as the inner diameter of the inner ring of the solid bearing, and the long straight edges of the third two-dimensional figure close to the third rotation axis are parallel to the third rotation axis.

[0028] In an optional embodiment, the step of constructing a three-dimensional model of the outer ring and roller assembly according to the axial cross-sectional dimensions of each of the solid bearing outer ring and the single solid roller comprises:

[0029] In a fourth plane, according to the relative posture relationship between the outer ring of the physical bearing and the two rows of physical rollers in the same axial plane when the inner and outer rings of the bearing are not deflected, a fourth two-dimensional graphic is constructed in which the corresponding graphic contour is connected by the axial cross-sectional dimensions of the outer ring of the physical bearing and the two physical rollers;

[0030] A fourth rotation axis is determined in the fourth plane on the side of the edge of the arc-shaped figure corresponding to the solid roller close to the fourth two-dimensional figure, and the fourth two-dimensional figure is rotated around the fourth rotation axis to construct a three-dimensional model to obtain the three-dimensional model of the outer ring and roller assembly, wherein the three-dimensional model of the outer ring and roller assembly is the same as the outer diameter of the outer ring of the solid bearing, and the long straight edge of the fourth two-dimensional figure away from the fourth rotation axis is parallel to the fourth rotation axis.

[0031] In an optional embodiment, the outer surface of the inner ring three-dimensional model matches the inner surface of the outer ring-roller assembly three-dimensional model in size.

[0032] In a third aspect, the present application provides a wind power transmission chain analysis method, the method comprising:

[0033] Obtain a target bearing finite element model of a target entity spherical roller bearing included in the transmission chain of the wind turbine to be detected, and a component finite element model of a load-bearing component to be detected included in the transmission chain of the wind turbine to be detected, wherein the target bearing finite element model of the target entity spherical roller bearing is constructed using the spherical roller bearing modeling method described in any one of the aforementioned implementations;

[0034] Assembling the target bearing finite element model and the component finite element model to obtain a corresponding transmission chain finite element model;

[0035] According to the expected equivalent elastic modulus of the target bearing finite element model, the material information of the load-bearing components to be tested and the finite element boundary conditions of the load-bearing components to be tested, the strength analysis of the load-bearing components is performed based on the transmission chain finite element model to obtain the component strength results of the load-bearing components to be tested and the stress distribution data of the raceway contact surface between the two three-dimensional models included in the target bearing finite element model.

[0036] In a fourth aspect, the present application provides a computer device comprising a processor and a memory, wherein the memory stores a computer program that can be executed by the processor, and the processor can execute the computer program to implement the spherical roller bearing modeling method described in any one of the aforementioned embodiments, or to implement the wind power transmission chain analysis method described in the aforementioned embodiments.

[0037] In this case, the beneficial effects of the embodiments of the present application may include the following:

[0038] The present application obtains the axial cross-sectional dimensions of the target solid bearing outer ring, the solid bearing inner ring and a single solid roller of the target solid spherical roller bearing, and constructs a three-dimensional model of the outer ring that matches the contour of the solid bearing outer ring based on the axial cross-sectional dimensions of the solid bearing outer ring. At the same time, a three-dimensional model of the roller inner ring assembly is constructed according to the axial cross-sectional dimensions of the solid bearing inner ring and the single solid roller. The three-dimensional model of the outer ring and the three-dimensional model of the roller inner ring assembly are then assembled according to the friction contact relationship, so that the obtained finite element model of the target bearing can characterize the roller normal pressure transmission form of the solid spherical roller bearing in any scenario. (that is, the solid roller only transmits normal pressure between the inner and outer rings of the bearing when it is squeezed), and there will be no inner and outer ring bending moment transmission in the scenario of relative deflection of the inner and outer rings of the bearing. The radial stiffness of the bearing is analyzed on the target bearing finite element model, and the expected equivalent elastic modulus that can keep the same radial stiffness between the target bearing finite element model and the target solid spherical roller bearing is obtained, thereby ensuring that the simplified finite element model of the spherical roller bearing can also effectively characterize the actual force transmission form of the solid spherical roller bearing in the scenario of relative deflection of the inner and outer rings of the bearing, thereby improving the accuracy of the finite element strength analysis results of the loaded components in the wind power transmission chain.

[0039] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0041] Figure 1 A schematic diagram of the composition of a computer device provided in an embodiment of the present application;

[0042] Figure 2 A schematic flow chart of a first spherical roller bearing modeling method provided in an embodiment of the present application;

[0043] Figure 3 For Figure 2 The corresponding schematic diagram of the outer ring three-dimensional model and the schematic diagram of the axial longitudinal section;

[0044] Figure 4 For Figure 2 The corresponding model schematic diagram and axial longitudinal section schematic diagram of the three-dimensional model of the roller inner ring assembly;

[0045] Figure 5 For Figure 2 The corresponding model schematic diagram and axial longitudinal section schematic diagram of the target bearing finite element model;

[0046] Figure 6 A schematic flow chart of a second spherical roller bearing modeling method provided in an embodiment of the present application;

[0047] Figure 7 For Figure 6 The corresponding schematic diagram of the inner ring three-dimensional model and the schematic diagram of the axial longitudinal section;

[0048] Figure 8 For Figure 6 The corresponding schematic diagram of the outer ring roller assembly three-dimensional model and the schematic diagram of the axial longitudinal section;

[0049] Fig. 9 For Figure 6 The corresponding model schematic diagram and axial longitudinal section schematic diagram of the target bearing finite element model;

[0050] Fig.10 A schematic flow chart of a wind power transmission chain analysis method provided in an embodiment of the present application.

[0051] Icons: 10 - computer equipment; 11 - memory; 12 - processor; 13 - communication unit; 21 - three-dimensional model of outer ring; 22 - three-dimensional model of roller-inner ring assembly; 31 - three-dimensional model of inner ring; 32 - three-dimensional model of outer ring-roller assembly. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0053] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0054] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0055] In the description of the present application, it should be understood that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of the application is conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0056] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0057] In addition, in the description of the present application, it is understood that the relational terms such as the term "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the term "include", "comprise" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements includes not only those elements, but also includes other elements that are not clearly listed, or also includes elements inherent to such process, method, article or equipment. In the absence of more restrictions, the elements defined by the sentence "comprise one..." do not exclude the existence of other identical elements in the process, method, article or equipment including the elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood by specific circumstances.

[0058] In conjunction with the accompanying drawings, some embodiments of the present application are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0059] Please refer to Figure 1 , Figure 1: is a schematic diagram of the composition of the computer device 10 provided in the embodiment of the present application. In the embodiment of the present application, the computer device 10 can be used to construct a finite element model of a spherical roller bearing, and based on the constructed finite element model of the spherical roller bearing, perform finite element analysis on the strength of the loaded components in the transmission chain of the wind turbine, and obtain the finite element strength analysis results of the corresponding loaded components under the action of complex loads, and the stress distribution data of the inner and outer ring raceway surfaces of the corresponding finite element model of the spherical roller bearing under the action of complex loads. The computer device 10 can be, but is not limited to, a tablet computer, a laptop computer, a personal computer, a server, etc.

[0060] In the embodiment of the present application, the computer device 10 may include a memory 11, a processor 12, and a communication unit 13, wherein the memory 11, the processor 12, and the communication unit 13 are electrically connected to each other directly or indirectly to achieve data transmission or interaction. For example, the memory 11, the processor 12, and the communication unit 13 may be electrically connected to each other via one or more communication buses or signal lines.

[0061] In this embodiment, the memory 11 may be, but not limited to, a random access memory (RAM), a read only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable read-only memory (EEPROM), etc. The memory 11 is used to store a computer program, and the processor 12 may execute the computer program accordingly after receiving an execution instruction.

[0062] In this embodiment, the processor 12 may be an integrated circuit chip with signal processing capability. The processor 12 may be a general-purpose processor, including a central processing unit (CPU), a graphics processing unit (GPU), a network processor (NP), a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA), or at least one of other programmable logic devices, discrete gate or transistor logic devices, and discrete hardware components. A general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc., which may implement or execute the disclosed methods, steps, and logic block diagrams in the embodiments of the present application.

[0063] In this embodiment, the communication unit 13 is used to establish a communication connection between the computer device 10 and other electronic devices through a network, and to send and receive data through the network, wherein the network includes a wired communication network and a wireless communication network. For example, the computer device 10 can obtain the actual bearing size of the target solid spherical roller bearing that needs to be simplified in the transmission chain of the wind turbine to be analyzed through the communication unit 13, wherein the actual bearing size includes the axial cross-sectional size of the solid bearing outer ring, the solid bearing inner ring and the single solid roller in the corresponding target solid spherical roller bearing, wherein the axial cross-sectional size of the solid bearing outer ring is the single cross-sectional size of the solid bearing outer ring on any plane where its own rotation center axis is located, the axial cross-sectional size of the solid bearing inner ring is the single cross-sectional size of the solid bearing inner ring on any plane where its own rotation center axis is located, and the axial cross-sectional size of a single solid roller is the cross-sectional size of the corresponding solid roller on any plane where its own rotation center axis is located.

[0064] Optionally, in an embodiment of the present application, the computer device 10 may pre-store a specific computer program related to the spherical roller bearing modeling function in the memory 11, and construct a spherical roller bearing finite element model that can characterize the actual force transmission form (i.e., roller normal pressure transmission form) of the solid spherical roller bearing under any scenario (including the relative deflection scenario of the inner and outer rings of the bearing) by driving the processor 12 to execute the specific computer program in a corresponding manner, so as to effectively improve the accuracy of the corresponding finite element strength analysis results when the spherical roller bearing finite element model is used to perform finite element analysis on the strength of the load-bearing components in the wind power transmission chain. The invention can construct an adaptive finite element model of a spherical roller bearing for the scenario where there is no deflection of the inner and outer rings of the bearing, and accordingly analyze the stress distribution data of the outer ring raceway surface of the finite element model of the spherical roller bearing under the action of complex loads; or construct an adaptive finite element model of a spherical roller bearing for the scenario where there is no deflection of the inner and outer rings of the bearing, so that the finite element model of the spherical roller bearing can effectively characterize the actual force transmission form of the solid spherical roller bearing (i.e., the roller normal pressure transmission form) under the scenario where there is no deflection of the inner and outer rings of the bearing, so as to facilitate the effective analysis of the stress distribution data of the inner ring raceway surface of the finite element model of the spherical roller bearing under the action of complex loads in the process of using the finite element model of the spherical roller bearing to perform finite element analysis on the strength of the loaded components in the wind power transmission chain.

[0065] Optionally, in an embodiment of the present application, the computer device 10 may pre-store a specific computer program related to the wind power transmission chain analysis function in the memory 11, and drive the processor 12 to execute the specific computer program accordingly, thereby performing finite element analysis on the strength of the load-bearing components in the wind power transmission chain based on the above-mentioned spherical roller bearing finite element model that has been constructed, and obtaining the finite element strength analysis results of the load-bearing components, as well as the stress distribution data of the outer ring raceway surface or the inner ring raceway surface of the corresponding spherical roller bearing finite element model under complex loads.

[0066] Understandably, Figure 1 The block diagram shown is only a schematic diagram of a composition of the computer device 10. The computer device 10 may also include Figure 1 More or fewer components as shown, or with Figure 1 Different configurations are shown. Figure 1 Each component shown in the figure can be implemented by hardware, software or a combination thereof.

[0067] In the present application, in order to ensure that the finite element model of the spherical roller bearing constructed by the computer device 10 can characterize the actual force transmission form (i.e., the roller normal pressure transmission form) of the physical spherical roller bearing in any scenario (including the relative deflection scenario of the inner and outer rings of the bearing), so as to improve the accuracy of the finite element strength analysis results of the loaded components in the wind power transmission chain, and accurately analyze the stress distribution data of the outer ring raceway surface of the corresponding finite element model of the spherical roller bearing under complex loads, the embodiment of the present application achieves the above-mentioned purpose by providing a first spherical roller bearing modeling method. The first spherical roller bearing modeling method provided in the present application is described in detail below.

[0068] Please refer to Figure 2 , Figure 2 1 is a flow chart of a first spherical roller bearing modeling method provided in an embodiment of the present application. In an embodiment of the present application, the first spherical roller bearing modeling method may include steps S210 to S250.

[0069] Step S210, obtaining the actual bearing size of the target solid spherical roller bearing, wherein the actual bearing size includes the axial cross-sectional size of the solid bearing outer ring, the solid bearing inner ring and the single solid roller of the target solid spherical roller bearing.

[0070] The target entity spherical roller bearing is a entity spherical roller bearing that needs to be simplified in the transmission chain of the wind turbine to be analyzed.

[0071] Step S220: constructing a three-dimensional model of the outer ring that matches the outer ring profile of the physical bearing according to the axial cross-sectional dimensions of the outer ring of the physical bearing.

[0072] In this embodiment, refer to Figure 3 (a) and Figure 3 (b), where Figure 3 (a) is Figure 2 The corresponding schematic diagram of the outer ring three-dimensional model 21, Figure 3 (b) is related to Figure 2 The axial longitudinal section diagram of the corresponding outer ring three-dimensional model 21. After obtaining the axial section size of the physical bearing outer ring in the target physical spherical roller bearing, the computer device 10 can select any plane in the three-dimensional model space as the first plane, and then construct a first two-dimensional graphic in the first plane whose corresponding graphic contour is consistent with the axial section size of the physical bearing outer ring (i.e., Figure 3(b) is a quasi-rectangular pattern at the top position and filled with multiple right-slanting lines), wherein the first two-dimensional figure can be regarded as "a rectangular pattern in which a long straight edge is replaced by a concave arc edge", and then a first rotation axis located on the side of the concave arc edge close to the first two-dimensional figure can be determined in the first plane, and the first two-dimensional figure can be rotated around the first rotation axis to construct a three-dimensional model, and the corresponding outer circle three-dimensional model 21 (i.e. Figure 3 (a) shows an outer ring three-dimensional model 21), wherein the two parallel sides connecting the first rotation axis and the first two-dimensional figure of the concave arc edge are perpendicular to each other, and the outer ring three-dimensional model 21 has the same inner diameter as the outer ring of the solid bearing.

[0073] Step S230, constructing a three-dimensional model of the roller inner ring assembly according to the axial cross-sectional dimensions of the solid bearing inner ring and the single solid roller.

[0074] In this embodiment, refer to Figure 4 (a) and Figure 4 (b), where Figure 4 (a) is Figure 2 The corresponding model schematic diagram of the roller inner ring assembly three-dimensional model 22, Figure 4 (b) is related to Figure 2 A schematic diagram of the axial longitudinal section of the corresponding three-dimensional model 22 of the roller inner ring assembly. After obtaining the axial cross-sectional dimensions of each of the solid bearing inner ring and the single solid roller in the target solid spherical roller bearing, the computer device 10 can select an arbitrary plane in the three-dimensional model space as the second plane (wherein the second plane may or may not belong to the same plane as the first plane), and then in the second plane, according to the relative posture relationship between the two raceways on the solid bearing inner ring and the two rows of solid rollers in the same axial plane (that is, any plane where the rotation center axis of the target solid spherical roller bearing is located), construct a corresponding graphic contour. The second two-dimensional graphic (that is, in the second plane) is formed by connecting the axial cross-sectional dimensions of each of the solid bearing inner ring and the two solid rollers. Figure 4 (b) is a “concave”-shaped pattern at the top position and filled with multiple left-slanting lines), wherein the second two-dimensional figure can be regarded as a connection between a rectangular pattern and two drum-shaped patterns, the rectangular pattern corresponds to the axial cross-sectional size of the inner ring of the solid bearing, each drum-shaped pattern corresponds to the axial cross-sectional size of a solid roller, and the relative posture relationship between the two drum-shaped patterns and the rectangular pattern can be used to characterize “the relative posture relationship between the inner ring of the solid bearing and the two rows of solid rollers in the same axial plane”.

[0075] Next, the computer device 10 determines a second rotation axis on the second plane that is located on the side of the edge of the graphic corresponding to the physical roller and away from the second two-dimensional graphic (i.e., the mapping edge of the drum-shaped pattern on the second two-dimensional graphic), and rotates the second two-dimensional graphic around the second rotation axis to construct a three-dimensional model, thereby obtaining a corresponding three-dimensional model 22 of the roller inner ring assembly (i.e., Figure 4 (a) shows the roller inner ring assembly three-dimensional model 22), at this time, the two rows of solid rollers in the target solid spherical roller bearing are simplified into an equivalent circular ring structure on the outside of the roller inner ring assembly three-dimensional model 22, the roller inner ring assembly three-dimensional model 22 has the same inner diameter as the inner ring of the solid bearing, and the long straight edge of the second two-dimensional figure close to the second rotation axis (i.e., the long edge of the corresponding rectangular pattern not connected by the drum pattern) is parallel to the second rotation axis.

[0076] Step S240, assembling the outer ring three-dimensional model and the roller inner ring assembly three-dimensional model according to the friction contact relationship to obtain a target bearing finite element model of the target solid spherical roller bearing.

[0077] In this embodiment, refer to Figure 5 (a) and Figure 5 (b), where Figure 5 (a) is Figure 2 The corresponding model diagram of the target bearing finite element model, Figure 5 (b) is related to Figure 2 The computer device 10 can place the rotation center axes of the outer ring three-dimensional model 21 and the roller inner ring assembly three-dimensional model 22 in a coincident state in the same three-dimensional model space, and then assemble the roller inner ring assembly three-dimensional model 22 and the outer ring three-dimensional model 21 together according to the relative posture relationship between the physical bearing outer ring and the physical bearing inner ring in the same physical spherical roller bearing when the inner and outer rings of the bearing are not deflected, so that the outer surface of the roller inner ring assembly three-dimensional model 22 is in friction contact with the inner surface of the outer ring three-dimensional model 21 (see Figure 5 The second two-dimensional figure (a concave-shaped pattern filled with left oblique lines) and the first two-dimensional figure (a rectangular pattern filled with right oblique lines) in the same axial section in (b) are fitted together to obtain the corresponding target bearing finite element model (i.e. Figure 5(a) shows a three-dimensional model structure). The inner surface of the outer ring three-dimensional model 21 matches the outer surface size of the roller inner ring assembly three-dimensional model 22. There is only one set of surface-to-surface friction contacts in the target bearing finite element model. The surface-to-surface friction contacts are actually used to characterize the friction contacts between the bearing entity roller and the outer ring raceway surface, so as to ensure that the target bearing finite element model can characterize the roller normal pressure transmission form of the entity spherical roller bearing in any scenario (that is, the entity roller only transmits normal pressure between the inner and outer rings of the bearing when squeezed), and will not cause the inner and outer ring bending moment transmission in the relative deflection scenario of the inner and outer rings of the bearing. At the same time, it is ensured that the target bearing finite element model has better convergence performance than the spherical roller bearing model constructed by the existing spherical roller bearing finite element simplified modeling method, so as to improve the efficiency of finite element analysis.

[0078] Step S250, performing bearing radial stiffness analysis on the target bearing finite element model to obtain an expected equivalent elastic modulus of the target bearing finite element model associated with the roller inner ring assembly three-dimensional model.

[0079] In this embodiment, the computer device 10 can perform entity unit meshing on the constructed target bearing finite element model, and then perform bearing radial stiffness analysis based on the meshed target bearing finite element model, so as to repeatedly debug the actual elastic modulus of the roller inner ring assembly three-dimensional model 22 in the target bearing finite element model to verify whether the radial stiffness of the target bearing finite element model is equivalent to the radial stiffness of the target solid spherical roller bearing, until the expected equivalent elastic modulus that can ensure that the target bearing finite element model and the target solid spherical roller bearing maintain the same radial stiffness is debugged, so that in the subsequent finite element strength analysis of the load-bearing components in the wind power transmission chain, the expected equivalent elastic modulus can be directly used to improve the accuracy of the finite element strength analysis results, and ensure that the outer ring raceway surface stress distribution data analyzed for the target bearing finite element model has sufficiently high data reliability.

[0080] Therefore, the present application can perform simplified finite element modeling for any solid spherical roller bearing by executing the above steps S210 to S250, so that the constructed finite element model of the spherical roller bearing can characterize the actual force transmission form (i.e., the roller normal pressure transmission form) of the solid spherical roller bearing under any scenario (including the relative deflection scenario of the inner and outer rings of the bearing), so as to improve the accuracy of the finite element strength analysis results of the loaded components in the wind power transmission chain, and accurately analyze the stress distribution data of the outer ring raceway surface of the corresponding finite element model of the spherical roller bearing under complex loads.

[0081] In the present application, in order to ensure that the computer device 10 constructs a finite element model of a spherical roller bearing that is compatible with the scenario where the inner and outer rings of the bearing have no deflection for any physical spherical roller bearing, so that the corresponding finite element model of the spherical roller bearing can effectively characterize the actual force transmission form (i.e., the roller normal pressure transmission form) of the physical spherical roller bearing in the scenario where the inner and outer rings of the bearing have no deflection, so that in the process of using the finite element model of the spherical roller bearing to perform finite element analysis on the strength of the loaded components in the wind power transmission chain, the stress distribution data of the inner ring raceway surface of the finite element model of the spherical roller bearing under complex loads can be effectively analyzed, and the accuracy of the finite element strength analysis results of the loaded components in the scenario where the inner and outer rings of the bearing have no deflection can be improved, the embodiment of the present application achieves the above-mentioned purpose by providing a second spherical roller bearing modeling method. The second spherical roller bearing modeling method provided in the present application is described in detail below.

[0082] Please refer to Figure 6 , Figure 6 1 is a flow chart of a second spherical roller bearing modeling method provided in an embodiment of the present application. In an embodiment of the present application, the second spherical roller bearing modeling method may include steps S310 to S350.

[0083] Step S310, obtaining the actual bearing size of the target solid spherical roller bearing, wherein the actual bearing size includes the axial cross-sectional size of the solid bearing outer ring, the solid bearing inner ring and the single solid roller of the target solid spherical roller bearing.

[0084] Step S320: constructing a three-dimensional model of the inner ring that matches the contour of the inner ring of the physical bearing according to the axial cross-sectional dimensions of the inner ring of the physical bearing.

[0085] In this embodiment, refer to Figure 7 (a) and Figure 7 (b), where Figure 7 (a) is Figure 6 The corresponding schematic diagram of the inner circle three-dimensional model 31, Figure 7 (b) is related to Figure 6 The axial longitudinal section diagram of the corresponding inner ring three-dimensional model 31. After obtaining the axial section size of the inner ring of the target solid spherical roller bearing, the computer device 10 can select any plane in the three-dimensional model space as the third plane, and then construct a third two-dimensional graphic in the third plane whose corresponding graphic contour is consistent with the axial section size of the inner ring of the solid bearing (i.e., Figure 7 (b) is a "mountain"-shaped pattern at the top position and filled with multiple right-slanting lines), wherein the third two-dimensional figure has three raised edges on the same side, and the gap formed by two adjacent raised edges corresponds to a raceway on the inner ring of the solid bearing alone.

[0086] Next, the computer device 10 determines a third rotation axis on the side of the convex edge of the third two-dimensional graphic that is away from the third two-dimensional graphic in the third plane, and rotates the third two-dimensional graphic around the third rotation axis to perform three-dimensional model construction, obtaining a corresponding inner ring three-dimensional model 31 (i.e., Figure 7 the inner ring three-dimensional model 31 shown in (a)), where the long straight edge of the third two-dimensional graphic close to the third rotation axis is parallel to the third rotation axis, and the inner ring three-dimensional model 31 has the same inner diameter as the inner ring of the solid bearing.

[0087] Step S330: Construct a three-dimensional model of the outer ring roller assembly according to the axial cross-sectional dimensions of the outer ring of the solid bearing and each single solid roller.

[0088] In this embodiment, reference may be made to Figure 8 (a) and Figure 8 (b), where Figure 8 (a) is a schematic diagram of the model of the three-dimensional model 32 of the outer ring roller assembly corresponding to Figure 6 (b) is a schematic axial longitudinal cross-section of the three-dimensional model 32 of the outer ring roller assembly corresponding to Figure 8 (b). After the computer device 10 obtains the axial cross-sectional dimensions of the outer ring of the solid bearing and each single solid roller in the target solid self-aligning roller bearing, it can select any plane in the three-dimensional model space as the fourth plane (where the fourth plane may belong to the same plane as the third plane or may not belong to the same plane). Then, in the fourth plane, according to the relative pose relationship between the outer ring of the solid bearing and the two rows of solid rollers in the same axial plane (i.e., any plane where the rotation center axis of the target solid self-aligning roller bearing is located) when the inner and outer rings of the bearing are in a non-deflected state, a fourth two-dimensional graphic whose corresponding graphic contour is formed by connecting the axial cross-sectional dimensions of the outer ring of the solid bearing and the two solid rollers is constructed (i.e., the "pi"-shaped pattern filled with multiple left diagonal lines and located at the top position in Figure 6 (b)), where the fourth two-dimensional graphic can be regarded as obtained by connecting a rectangular pattern and two drum-shaped patterns with arc-shaped graphic edges. The rectangular pattern corresponds to the axial cross-sectional dimension of the outer ring of the solid bearing, each drum-shaped pattern corresponds to the axial cross-sectional dimension of a single solid roller, and the relative pose relationship between the two drum-shaped patterns and the rectangular pattern can be used to represent "the relative pose relationship between the outer ring of the solid bearing and the two rows of solid rollers in the same axial plane when the inner and outer rings of the bearing are in a non-deflected state". Figure 8 (b)), where the fourth two-dimensional graphic can be regarded as obtained by connecting a rectangular pattern and two drum-shaped patterns with arc-shaped graphic edges. The rectangular pattern corresponds to the axial cross-sectional dimension of the outer ring of the solid bearing, each drum-shaped pattern corresponds to the axial cross-sectional dimension of a single solid roller, and the relative pose relationship between the two drum-shaped patterns and the rectangular pattern can be used to represent "the relative pose relationship between the outer ring of the solid bearing and the two rows of solid rollers in the same axial plane when the inner and outer rings of the bearing are in a non-deflected state".

[0089] Next, the computer device 10 will determine a fourth rotation axis in the fourth plane on the side of the arc-shaped graphic edge corresponding to the solid roller near the fourth two-dimensional graphic (i.e., the mapping edge of the drum-shaped pattern on the fourth two-dimensional graphic), and rotate the fourth two-dimensional graphic around the fourth rotation axis to perform three-dimensional model construction, obtaining a corresponding three-dimensional model 32 of the outer ring roller assembly (i.e., Figure 8 the three-dimensional model 32 of the outer ring roller assembly shown in (a)). At this time, the two rows of solid rollers in the target solid self-aligning roller bearing are respectively simplified into an equivalent ring structure inside the three-dimensional model 32 of the outer ring roller assembly. The three-dimensional model 32 of the outer ring roller assembly has the same outer diameter as the outer ring of the solid bearing. The long straight edge of the fourth two-dimensional graphic far from the fourth rotation axis (i.e., the long side of the corresponding rectangular pattern not connected by the drum-shaped pattern) is parallel to the fourth rotation axis.

[0090] Step S340: Assemble the inner ring three-dimensional model and the outer ring roller assembly three-dimensional model according to the friction contact relationship to obtain a target bearing finite element model of the target solid self-aligning roller bearing.

[0091] In this embodiment, reference can be made to Fig. 9 (a) and Fig. 9 (b), where Fig. 9 (a) is a model schematic diagram of the target bearing finite element model corresponding to Figure 6 , and Fig. 9 (b) is an axial longitudinal sectional view of the target bearing finite element model corresponding to Figure 6 . The computer device 10 can place the rotation center axes of the inner ring three-dimensional model 31 and the outer ring roller assembly three-dimensional model 32 in a coincident state in the same three-dimensional model space, and then assemble the inner ring three-dimensional model 31 and the outer ring roller assembly three-dimensional model 32 according to the relative pose relationship between the outer ring of the solid bearing and the inner ring of the solid bearing in the target solid self-aligning roller bearing when there is no deflection between the inner and outer rings of the bearing, so that the outer surface of the inner ring three-dimensional model 31 is in frictional contact with the inner surface of the outer ring roller assembly three-dimensional model 32 (see the fourth two-dimensional graphic (the "兀"-shaped pattern filled with left oblique lines) and the third two-dimensional graphic (the "山"-shaped pattern filled with right oblique lines) in the same axial section in Fig. 9 (b) being mutually attached), thereby obtaining the corresponding target bearing finite element model (i.e., Fig. 9(a) shows a three-dimensional model structure). The outer surface of the inner ring three-dimensional model 31 matches the inner surface size of the outer ring roller assembly three-dimensional model 32. There is only one set of surface-to-surface friction contacts in the target bearing finite element model. The surface-to-surface friction contacts are actually used to characterize the friction contacts between the bearing entity roller and the inner ring raceway surface, so as to ensure that the target bearing finite element model can characterize the roller normal pressure transmission form of the entity spherical roller bearing in the scenario where the inner and outer rings of the bearing are not deflected (that is, the entity roller only transmits normal pressure between the inner and outer rings of the bearing when squeezed), and will not cause the inner and outer ring bending moment transmission in the scenario where the inner and outer rings of the bearing are not deflected. At the same time, it is ensured that the target bearing finite element model has better convergence performance than the spherical roller bearing model constructed by adopting the existing spherical roller bearing finite element simplified modeling method, so as to improve the efficiency of finite element analysis.

[0092] Step S350, performing bearing radial stiffness analysis on the target bearing finite element model to obtain the expected equivalent elastic modulus of the target bearing finite element model associated with the outer ring roller assembly three-dimensional model.

[0093] In this embodiment, the computer device 10 can perform entity unit meshing on the constructed target bearing finite element model, and then perform bearing radial stiffness analysis based on the meshed target bearing finite element model, so as to repeatedly debug the actual elastic modulus of the outer ring roller assembly three-dimensional model 32 in the target bearing finite element model to verify whether the radial stiffness of the target bearing finite element model is equivalent to the radial stiffness of the target solid spherical roller bearing, until the expected equivalent elastic modulus that can ensure that the target bearing finite element model and the target solid spherical roller bearing maintain the same radial stiffness is debugged, so that in the subsequent finite element strength analysis of the loaded components in the wind power transmission chain, the expected equivalent elastic modulus can be directly used to improve the accuracy of the finite element strength analysis results in the scenario of no deflection of the inner and outer rings of the bearing, and ensure that the stress distribution data of the inner ring raceway surface analyzed for the target bearing finite element model has sufficiently high data reliability.

[0094] Therefore, the present application can construct a finite element model of a spherical roller bearing that is compatible with the scenario where the inner and outer rings of the bearing have no deflection for any physical spherical roller bearing by executing the above steps S310 to S350, so that the corresponding finite element model of the spherical roller bearing can effectively characterize the actual force transmission form (i.e., the roller normal pressure transmission form) of the physical spherical roller bearing in the scenario where the inner and outer rings of the bearing have no deflection, so that in the process of using the finite element model of the spherical roller bearing to perform finite element analysis on the strength of the loaded components in the wind power transmission chain, the stress distribution data of the inner ring raceway surface of the finite element model of the spherical roller bearing under complex loads can be effectively analyzed, and the accuracy of the finite element strength analysis results of the loaded components in the scenario where the inner and outer rings of the bearing have no deflection can be improved.

[0095] In the present application, in order to ensure that the computer device 10 is based on the constructed spherical roller bearing finite element model (for example, Figure 2 or Figure 6 The corresponding target bearing finite element model) performs finite element analysis on the strength of the loaded components in the wind power transmission chain to obtain the finite element strength analysis results of the loaded components, as well as the stress distribution data of the outer ring raceway surface or the inner ring raceway surface of the corresponding spherical roller bearing finite element model under complex loads. The embodiment of the present application achieves the above-mentioned purpose by providing a wind power transmission chain analysis method. The wind power transmission chain analysis method provided by the present application is described in detail below.

[0096] Please refer to Fig.10 , Fig.10 4 is a flow chart of a wind power transmission chain analysis method provided in an embodiment of the present application. In an embodiment of the present application, the wind power transmission chain analysis method may include steps S410 to S430.

[0097] Step S410, obtaining a target bearing finite element model of a target solid spherical roller bearing included in the transmission chain of the wind turbine generator set to be tested, and a component finite element model of a load-bearing component to be tested included in the transmission chain of the wind turbine generator set to be tested.

[0098] In this embodiment, the target bearing finite element model of the target solid spherical roller bearing can be adopted Figure 2 The first spherical roller bearing modeling method shown is constructed by Figure 6 The second spherical roller bearing modeling method shown is constructed.

[0099] Step S420, assembling the target bearing finite element model and the component finite element model to obtain a corresponding transmission chain finite element model.

[0100] In this embodiment, the computer device 10 can assemble the target bearing finite element model and the component finite element model in the same three-dimensional model space according to the relative posture relationship between the target solid spherical roller bearing in the transmission chain of the wind turbine to be tested and the loaded component to be tested, so as to obtain a transmission chain finite element model that is compatible with the transmission chain of the wind turbine to be tested.

[0101] Step S430, according to the expected equivalent elastic modulus of the target bearing finite element model, the material information of the loaded components to be tested and the finite element boundary conditions of the loaded components to be tested, the strength analysis of the loaded components is performed based on the transmission chain finite element model to obtain the component strength results of the loaded components to be tested and the stress distribution data of the raceway contact surface between the two three-dimensional models included in the target bearing finite element model.

[0102] In this embodiment, the computer device 10 can assign the expected equivalent elastic modulus of the target bearing finite element model to the combined three-dimensional model in the transmission chain finite element model (for example, Figure 2 The corresponding roller inner ring assembly three-dimensional model 22, or Figure 6 The corresponding outer ring roller assembly three-dimensional model 32) is then loaded synchronously with the material information and finite element boundary conditions of the load-bearing component to be tested onto the component finite element model in the transmission chain finite element model, and then the strength analysis of the load-bearing component is performed based on the transmission chain finite element model under different loads to obtain the component strength results of the load-bearing component to be tested under different loads (i.e., the finite element strength analysis results), as well as the stress distribution data of the raceway contact surface between the two three-dimensional models included in the target bearing finite element model under different loads. Among them, when the target bearing finite element model adopts Figure 2 The first spherical roller bearing modeling method shown in FIG. 1 is constructed, and the raceway contact surface between the two three-dimensional models included in the target bearing finite element model is used to characterize the outer ring raceway surface of the target solid spherical roller bearing; and when the target bearing finite element model is adopted Figure 6 The second spherical roller bearing modeling method shown is constructed, and the raceway contact surface between the two three-dimensional models included in the target bearing finite element model is used to characterize the inner ring raceway surface of the target solid spherical roller bearing.

[0103] Therefore, the present application can execute the above steps S410 to S430, based on the constructed finite element model of the spherical roller bearing (for example, Figure 2 or Figure 6 The corresponding target bearing finite element model) performs finite element analysis on the strength of the loaded components in the wind power transmission chain to obtain the finite element strength analysis results of the loaded components and the stress distribution data of the outer ring raceway surface or the inner ring raceway surface of the corresponding spherical roller bearing finite element model under complex loads.

[0104] The above are only various implementations of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A spherical roller bearing modeling method, characterized in that: The method comprises: Acquire the actual bearing size of the target solid spherical roller bearing, wherein the actual bearing size includes the axial cross-sectional size of each of the solid bearing outer ring, the solid bearing inner ring and a single solid roller of the target solid spherical roller bearing; According to the axial cross-sectional dimensions of the outer ring of the solid bearing, a three-dimensional model of the outer ring is constructed to match the contour of the outer ring of the solid bearing; Constructing a three-dimensional model of the roller inner ring assembly according to the respective axial cross-sectional dimensions of the solid bearing inner ring and the single solid roller; Assembling the outer ring three-dimensional model and the roller inner ring assembly three-dimensional model according to the friction contact relationship to obtain a target bearing finite element model of the target solid spherical roller bearing; A bearing radial stiffness analysis is performed on the target bearing finite element model to obtain an expected equivalent elastic modulus of the target bearing finite element model associated with the roller inner ring assembly three-dimensional model, wherein the expected equivalent elastic modulus is used to ensure that the target bearing finite element model and the target solid spherical roller bearing maintain the same radial stiffness.

2. The method according to claim 1, characterized in that The step of constructing a three-dimensional model of the outer ring that matches the outer ring profile of the solid bearing according to the axial cross-sectional size of the outer ring of the solid bearing comprises: Constructing a first two-dimensional graphic in a first plane, the corresponding graphic contour being consistent with the axial cross-sectional dimensions of the outer ring of the solid bearing; Determine a first rotation axis on the side of the concave arc edge close to the first two-dimensional figure in the first plane, and rotate the first two-dimensional figure around the first rotation axis to construct a three-dimensional model to obtain the outer ring three-dimensional model, wherein the outer ring three-dimensional model is the same as the inner diameter of the outer ring of the solid bearing, and the first rotation axis and two parallel edges of the first two-dimensional figure connecting the concave arc edge are perpendicular to each other.

3. The method according to claim 1, characterized in that The step of constructing a three-dimensional model of the roller inner ring assembly according to the respective axial cross-sectional dimensions of the solid bearing inner ring and the single solid roller comprises: In the second plane, according to the relative position relationship between the two raceways on the inner ring of the solid bearing and the two rows of solid rollers in the same axial plane, a second two-dimensional graphic is constructed in which the corresponding graphic contour is connected by the axial cross-sectional dimensions of the inner ring of the solid bearing and the two solid rollers; A second rotation axis is determined in the second plane, which is located on the side of the edge of the figure corresponding to the solid roller and away from the second two-dimensional figure, and the second two-dimensional figure is rotated around the second rotation axis to construct a three-dimensional model, so as to obtain the three-dimensional model of the roller inner ring assembly, wherein the three-dimensional model of the roller inner ring assembly is the same as the inner diameter of the inner ring of the solid bearing, and the long straight edge of the second two-dimensional figure close to the second rotation axis is parallel to the second rotation axis.

4. The method according to any one of claims 1 to 3, characterized in that: The inner surface of the outer ring three-dimensional model matches the outer surface of the roller inner ring assembly three-dimensional model in size.

5. A spherical roller bearing modeling method, characterized in that: The method comprises: Acquire the actual bearing size of the target solid spherical roller bearing, wherein the actual bearing size includes the axial cross-sectional size of each of the solid bearing outer ring, the solid bearing inner ring and a single solid roller of the target solid spherical roller bearing; According to the axial cross-sectional dimensions of the inner ring of the solid bearing, a three-dimensional model of the inner ring matching the contour of the inner ring of the solid bearing is constructed; Constructing a three-dimensional model of an outer ring-roller assembly according to the respective axial cross-sectional dimensions of the outer ring of the solid bearing and the single solid roller; Assembling the inner ring three-dimensional model and the outer ring roller assembly three-dimensional model according to the friction contact relationship to obtain a target bearing finite element model of the target solid spherical roller bearing; A bearing radial stiffness analysis is performed on the target bearing finite element model to obtain an expected equivalent elastic modulus of the target bearing finite element model associated with the outer ring roller assembly three-dimensional model, wherein the expected equivalent elastic modulus is used to ensure that the target bearing finite element model and the target solid spherical roller bearing maintain the same radial stiffness.

6. The method according to claim 5, characterized in that The step of constructing a three-dimensional model of the inner ring that matches the contour of the inner ring of the solid bearing according to the axial cross-sectional size of the inner ring of the solid bearing comprises: Constructing a third two-dimensional graphic in a third plane, the corresponding graphic contour being consistent with the axial cross-sectional dimensions of the inner ring of the solid bearing; A third rotation axis is determined in the third plane, which is on the side of the raised edge away from the third two-dimensional figure, and the third two-dimensional figure is rotated around the third rotation axis to construct a three-dimensional model to obtain the inner ring three-dimensional model, wherein the inner ring three-dimensional model is the same as the inner diameter of the inner ring of the solid bearing, and the long straight edges of the third two-dimensional figure close to the third rotation axis are parallel to the third rotation axis.

7. The method according to claim 5, characterized in that The step of constructing a three-dimensional model of the outer ring and roller assembly according to the axial cross-sectional dimensions of the solid bearing outer ring and the single solid roller comprises: In a fourth plane, according to the relative posture relationship between the outer ring of the physical bearing and the two rows of physical rollers in the same axial plane when the inner and outer rings of the bearing are not deflected, a fourth two-dimensional graphic is constructed in which the corresponding graphic contour is connected by the axial cross-sectional dimensions of the outer ring of the physical bearing and the two physical rollers; A fourth rotation axis is determined in the fourth plane on the side of the edge of the arc-shaped figure corresponding to the solid roller close to the fourth two-dimensional figure, and the fourth two-dimensional figure is rotated around the fourth rotation axis to construct a three-dimensional model to obtain the three-dimensional model of the outer ring and roller assembly, wherein the three-dimensional model of the outer ring and roller assembly is the same as the outer diameter of the outer ring of the solid bearing, and the long straight edge of the fourth two-dimensional figure away from the fourth rotation axis is parallel to the fourth rotation axis.

8. The method according to any one of claims 5 to 7, characterized in that: The outer surface of the inner ring three-dimensional model matches the inner surface of the outer ring-roller assembly three-dimensional model in size.

9. A wind power transmission chain analysis method, characterized in that: The method comprises: Obtain a target bearing finite element model of a target entity spherical roller bearing included in the transmission chain of the wind turbine to be detected, and a component finite element model of a load-bearing component to be detected included in the transmission chain of the wind turbine to be detected, wherein the target bearing finite element model of the target entity spherical roller bearing is constructed using the spherical roller bearing modeling method described in any one of claims 1 to 8; Assembling the target bearing finite element model and the component finite element model to obtain a corresponding transmission chain finite element model; According to the expected equivalent elastic modulus of the target bearing finite element model, the material information of the load-bearing components to be tested and the finite element boundary conditions of the load-bearing components to be tested, the strength analysis of the load-bearing components is performed based on the transmission chain finite element model to obtain the component strength results of the load-bearing components to be tested and the stress distribution data of the raceway contact surface between the two three-dimensional models included in the target bearing finite element model.

10. A computer device, characterized in that: It includes a processor and a memory, wherein the memory stores a computer program that can be executed by the processor, and the processor can execute the computer program to implement the spherical roller bearing modeling method described in any one of claims 1 to 8, or implement the wind power transmission chain analysis method described in claim 9.

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