Method for modeling a needle roller bearing, method for analyzing a wind power transmission chain, and related device

Abstract

The application provides a modeling method of a self-aligning roller bearing, a wind power transmission chain analysis method and related equipment, and relates to the technical field of wind power generation. Based on the axial section size of the outer ring of the target entity self-aligning roller bearing, a three-dimensional model of the outer ring is constructed, and according to the axial section size of the inner ring of the target entity self-aligning roller bearing and the single entity roller, a three-dimensional model of the roller inner ring assembly is constructed. Then, the three-dimensional model of the outer ring and the three-dimensional model of the roller inner ring assembly are assembled according to the frictional contact relationship, and the bearing radial stiffness analysis of the target bearing finite element model obtained by assembly is carried out to obtain the expected equivalent elastic modulus of the target bearing finite element model, so that the actual force transmission form of the target bearing finite element model can be effectively represented under the relative deflection of the inner and outer rings of the bearing, and the accuracy of the finite element strength analysis result of the loaded components in the wind power transmission chain is improved.

Description

TECHNICAL FIELD

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

[0002] In the design and development process of a large wind turbine, it is usually necessary to perform finite element strength analysis on a plurality of components in the wind power transmission chain to determine whether the limit strength and / or fatigue strength of the corresponding components under complex load can meet the safety use requirements. The wind power transmission chain usually selects a self-aligning roller bearing as a main bearing to link other load-bearing components, and therefore, when the strength of other important load-bearing components in the wind power transmission chain is checked by using finite element analysis, the self-aligning roller bearing needs to be simplified and modeled by using finite element analysis.

[0003] At present, the existing finite element simplified modeling method of the self-aligning roller bearing usually simplifies the modeling of the roller by using a rod element or a spring element. It is worth noting that when the self-aligning roller bearing model constructed by using this kind of modeling method is subjected to finite element strength analysis under the scenario of relative deflection between the inner and outer rings of the bearing, the bearing usually exhibits the characteristics of transmitting bending moment, partially loses the self-aligning function, causes the stress transmission path to change, and cannot effectively represent the actual force transmission form of the solid self-aligning roller bearing under the actual working state, which seriously affects the accuracy of the finite element strength analysis result of the load-bearing components in the wind power transmission chain. SUMMARY

[0004] Therefore, the purpose of the present application is to provide a modeling method of a self-aligning roller bearing, a wind power transmission chain analysis method and a computer device, so as to ensure that the finite element model of the simplified self-aligning roller bearing can effectively represent the actual force transmission form of the solid self-aligning roller bearing under the scenario of relative deflection between the inner and outer rings of the bearing, and improve the accuracy of the finite element strength analysis result of the load-bearing components in the wind power transmission chain.

[0005] In order to achieve the above-mentioned purpose, the technical solutions adopted by the embodiments of the present application are as follows:

[0006] In a first aspect, the present application provides a modeling method of a self-aligning roller bearing, which comprises:

[0007] obtaining the actual bearing size of a target solid self-aligning roller bearing, wherein the actual bearing size comprises the axial sectional dimension of each of the solid bearing outer ring, the solid bearing inner ring and the single solid roller of the target solid self-aligning roller bearing;

[0008] constructing a three-dimensional model of the outer ring which matches the contour of the solid bearing outer ring according to the axial sectional dimension of the solid bearing outer ring;

[0009] constructing a three-dimensional model of the outer ring according to the axial sectional dimension of the outer ring of the solid bearing;

[0010] model assembling the three-dimensional model of the outer ring and the three-dimensional model of the roller inner ring assembly according to the frictional contact relationship, to obtain a target bearing finite element model of the target solid self-aligning roller bearing;

[0011] 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 three-dimensional model of the roller inner ring assembly, wherein the expected equivalent elastic modulus is used to keep the target bearing finite element model and the target solid self-aligning roller bearing with the same radial stiffness.

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

[0013] constructing a first two-dimensional graph keeping consistent with the axial sectional dimension of the outer ring of the solid bearing in a first plane;

[0014] determining a first rotation axis on the side close to the concave arc edge of the first two-dimensional graph in the first plane, and rotating the first two-dimensional graph around the first rotation axis for three-dimensional model construction, to obtain the three-dimensional model of the outer ring, wherein the three-dimensional model of the outer ring is the same as the inner diameter of the outer ring of the solid bearing, and the first rotation axis is perpendicular to the two parallel edges of the first two-dimensional graph connecting the concave arc edge.

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

[0016] constructing a second two-dimensional graph in a second plane according to the relative pose relationship of the two raceways on the inner ring of the solid bearing and the two rows of solid rollers in the same axial plane, wherein the corresponding graph profile of the second two-dimensional graph is formed by the axial sectional dimension of the inner ring of the solid bearing and the two solid rollers;

[0017] determining a second rotation axis on the side away from the graph edge corresponding to the solid roller of the second two-dimensional graph in the second plane, and rotating the second two-dimensional graph around the second rotation axis for three-dimensional model construction, 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 graph close to the second rotation axis is parallel to the second rotation axis.

[0018] In an optional embodiment, the inner side surface of the outer ring three-dimensional model is dimensionally matched with the outer side surface of the roller inner ring assembly three-dimensional model.

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

[0020] acquiring actual bearing dimensions of a target entity spherical roller bearing, wherein the actual bearing dimensions comprise axial sectional dimensions of an entity bearing outer ring, an entity bearing inner ring and a single entity roller of the target entity spherical roller bearing;

[0021] constructing an inner ring three-dimensional model matching a profile of the entity bearing inner ring according to the axial sectional dimensions of the entity bearing inner ring;

[0022] constructing an outer ring roller assembly three-dimensional model according to the axial sectional dimensions of the entity bearing outer ring and the single entity roller;

[0023] model assembling the inner ring three-dimensional model and the outer ring roller assembly three-dimensional model in a frictional contact relationship to obtain a target bearing finite element model of the target entity spherical roller bearing;

[0024] 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 outer ring roller assembly three-dimensional model, wherein the expected equivalent elastic modulus is used to maintain the same radial stiffness between the target bearing finite element model and the target entity spherical roller bearing.

[0025] In an optional embodiment, the step of constructing the inner ring three-dimensional model matching the profile of the entity bearing inner ring according to the axial sectional dimensions of the entity bearing inner ring comprises:

[0026] constructing a third two-dimensional graph in a third plane, the third two-dimensional graph having a corresponding graph profile consistent with the axial sectional dimensions of the entity bearing inner ring;

[0027] determining a third rotation axis in the third plane on a side away from a convex edge of the third two-dimensional graph, and rotating the third two-dimensional graph around the third rotation axis for three-dimensional model construction to obtain the inner ring three-dimensional model, wherein the inner ring three-dimensional model has the same inner diameter as the entity bearing inner ring, and a long straight edge of the third two-dimensional graph close to the third rotation axis is parallel to the third rotation axis.

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

[0029] In the fourth plane, a fourth two-dimensional figure corresponding to a graph profile formed by the axial cross-sectional dimensions of the solid bearing outer ring and the two solid rollers is constructed according to the relative positional relationship of the solid bearing outer ring and the two rows of solid rollers in the same axial plane in the non-deflection state of the bearing inner and outer rings;

[0030] A fourth rotation axis is determined in the fourth plane on the side close to the arc-shaped figure edge corresponding to the solid roller of the fourth two-dimensional figure, and a three-dimensional model is constructed by rotating the fourth two-dimensional figure around the fourth rotation axis, to obtain the outer ring roller assembly three-dimensional model, wherein the outer ring roller assembly three-dimensional model has the same outer diameter as the solid bearing outer ring, 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 side surface of the inner ring three-dimensional model is dimensionally matched with the inner side surface of the outer ring roller assembly three-dimensional model.

[0032] In a third aspect, the present application provides a wind power transmission chain analysis method, and the method comprises the following steps:

[0033] An object bearing finite element model of an object self-aligning roller bearing included in a to-be-detected wind turbine transmission chain is obtained, and a component finite element model of a to-be-detected load-bearing component included in the to-be-detected wind turbine transmission chain is obtained, wherein the object bearing finite element model of the object self-aligning roller bearing is obtained by using the self-aligning roller bearing modeling method in any one of the foregoing embodiments.

[0034] The object bearing finite element model and the component finite element model are assembled to obtain a corresponding transmission chain finite element model.

[0035] Based on the transmission chain finite element model, a load-bearing component strength analysis is performed according to an expected equivalent elastic modulus of the object bearing finite element model, material information of the to-be-detected load-bearing component, and a finite element boundary condition of the to-be-detected load-bearing component, to obtain a component strength result of the to-be-detected load-bearing component and stress distribution data of a raceway contact surface between two three-dimensional models included in the object 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 capable of being executed by the processor, and the processor can execute the computer program to implement the self-aligning roller bearing modeling method in any one of the foregoing embodiments or the wind power transmission chain analysis method.

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

[0038] The application obtains the axial sectional dimension of each of the entity bearing outer ring, the entity bearing inner ring and the single entity roller of the target entity self-aligning roller bearing, constructs a three-dimensional model of the outer ring matched with the profile of the entity bearing outer ring based on the axial sectional dimension of the entity bearing outer ring, constructs a three-dimensional model of the roller inner ring combination according to the axial sectional dimension of each of the entity bearing inner ring and the single entity roller, and then performs model assembly on the three-dimensional model of the outer ring and the three-dimensional model of the roller inner ring combination according to the friction contact relationship, so that the obtained target bearing finite element model can represent the roller normal pressure transmission form of the entity self-aligning roller bearing (i.e., the entity roller only transmits the normal pressure between the bearing inner and outer rings when being extruded) in any scenario, and the inner and outer ring bending moment transmission does not occur in the scenario of relative deflection of the bearing inner and outer rings, and the bearing radial stiffness analysis is performed on the target bearing finite element model, so that the expected equivalent elastic modulus that can make the target bearing finite element model and the target entity self-aligning roller bearing maintain the same radial stiffness is obtained, thereby ensuring that the simplified constructed self-aligning roller bearing finite element model can also effectively represent the actual force transmission form of the entity self-aligning roller bearing in the scenario of relative deflection of the bearing inner and outer rings, and improving the accuracy of the finite element strength analysis result of the loaded parts in the wind power transmission chain.

[0039] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the following preferred embodiments are specifically described below, and the accompanying drawings are used for detailed description. BRIEF DESCRIPTION OF DRAWINGS

[0040] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0041] Figure 1 The composition schematic diagram of the computer device provided for the embodiments of the present application is shown in the figure;

[0042] Figure 2 The flowchart of the first self-aligning roller bearing modeling method provided for the embodiments of the present application is shown in the figure;

[0043] Figure 3 The model schematic diagram and the axial longitudinal section schematic diagram of the corresponding three-dimensional model of the outer ring are shown in the figure; Figure 2 The model schematic diagram and the axial longitudinal section schematic diagram of the corresponding three-dimensional model of the roller inner ring combination are shown in the figure;

[0044] Figure 4 The model schematic diagram and the axial longitudinal section schematic diagram of the corresponding three-dimensional model of the roller inner ring combination are shown in the figure; Figure 2 The model schematic diagram and the axial longitudinal section schematic diagram of the corresponding three-dimensional model of the roller inner ring combination are shown in the figure;

[0045] Figure 5 for the corresponding target bearing finite element model and axial longitudinal section view; Figure 2

[0046] Figure 6 for the second type of modeling method of the self-aligning roller bearing provided by the embodiment of the present application;

[0047] Figure 7 for the corresponding target bearing finite element model and axial longitudinal section view; Figure 6

[0048] Figure 8 for the corresponding target bearing finite element model and axial longitudinal section view; Figure 6

[0049] Figure 9 for the corresponding target bearing finite element model and axial longitudinal section view; Figure 6

[0050] Figure 10 for the corresponding target bearing finite element model and axial longitudinal section view;

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

[0052] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. The components of the embodiments of the present application described and shown in the drawings herein 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 drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present application.

[0054] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0055] ​​​​In the description of the application, it needs to be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly understood by those skilled in the art, or the orientation or positional relationship commonly understood by those skilled in the art, or the orientation or positional relationship commonly understood by those skilled in the art, only for the convenience of describing the application and simplifying the description, and not indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the application.

[0056] In the description of the application, it also needs to be explained that, unless otherwise explicitly specified and limited, the terms "set", "install", "connect", "connect" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0057] In addition, in the description of the application, it can be understood that the relationship terms such as "first" and "second" and the like are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, method, article or device. Without more limitation, the element defined by the sentence "including a…" does not exclude the presence of other identical elements in the process, method, article or device including the element. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0058] Some embodiments of the application will be described in detail below with reference to the accompanying drawings. The following examples and features in the examples can be combined with each other without conflict.

[0059] Please refer to Figure 1 , Figure 1is a constituent schematic diagram 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 self-aligning roller bearing, and based on the constructed finite element model of the self-aligning roller bearing, perform finite element analysis on the strength of a loaded component in a transmission chain of a wind turbine generator, to obtain finite element strength analysis results of the corresponding loaded component under complex load, and stress distribution data of inner and outer ring raceway surfaces of the corresponding finite element model of the self-aligning roller bearing under complex load. The computer device 10 can be, but is not limited to, a tablet computer, a notebook computer, a personal computer, a server, etc.

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

[0061] In the embodiment, the memory 11 can be, but is 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 programmable read only memory (EEPROM) and the like. The memory 11 is used to store a computer program, and the processor 12 can execute the computer program after receiving an execution instruction.

[0062] In the embodiment, the processor 12 can be an integrated circuit chip with processing capability of signals. The processor 12 can be a general processor, including at least one of 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 other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, etc. The general processor can be a microprocessor or the processor can also be any conventional processor, etc., which can realize or execute the disclosed methods, steps and logic block diagrams in the embodiments.

[0063] In the embodiment, the communication unit 13 is configured to establish a communication connection between the computer device 10 and other electronic devices through a network, and transmits and receives data through the network, where the network includes a wired communication network and a wireless communication network. For example, the computer device 10 can obtain actual bearing sizes of a target entity self-aligning roller bearing in a wind turbine transmission chain which needs to be simplified for modeling through the communication unit 13, where the actual bearing sizes include respective axial cross-sectional sizes of an entity outer ring, an entity inner ring and a single entity roller in the target entity self-aligning roller bearing, where the axial cross-sectional size of the entity outer ring is a single cross-sectional size of the entity outer ring in any plane where a central axis of the entity outer ring is located, the axial cross-sectional size of the entity inner ring is a single cross-sectional size of the entity inner ring in any plane where a central axis of the entity inner ring is located, and the axial cross-sectional size of the single entity roller is a cross-sectional size of the corresponding entity roller in any plane where a central axis of the entity roller is located.

[0064] Optionally, in the embodiment of the present application, the computer device 10 can pre-store a specific computer program related to the modeling function of the self-aligning roller bearing in the memory 11, and construct a finite element model of the self-aligning roller bearing that can represent the actual force transmission form (i.e. the form of roller normal pressure transmission) of the solid self-aligning roller bearing under any scenario (including the scenario of relative deflection between the inner and outer rings of the bearing) by driving the processor 12 to execute the specific computer program correspondingly, so as to effectively improve the accuracy of the corresponding finite element strength analysis result when the finite element analysis is performed on the strength of the loaded component in the wind power transmission chain by using the finite element model of the self-aligning roller bearing, and accordingly analyze the stress distribution data of the outer ring raceway surface of the finite element model of the self-aligning roller bearing under complex load; or construct an adaptive finite element model of the self-aligning roller bearing for the scenario of no deflection between the inner and outer rings of the bearing, so that the finite element model of the self-aligning roller bearing effectively represents the actual force transmission form (i.e. the form of roller normal pressure transmission) of the solid self-aligning roller bearing under the scenario of no deflection between the inner and outer rings of the bearing, thereby facilitating the effective analysis of the stress distribution data of the inner ring raceway surface of the finite element model of the self-aligning roller bearing under complex load in the process of performing the finite element analysis on the strength of the loaded component in the wind power transmission chain by using the finite element model of the self-aligning roller bearing.

[0065] Optionally, in the embodiment of the present application, the computer device 10 can pre-store a specific computer program related to the wind power transmission chain analysis function in the memory 11, and perform the finite element analysis on the strength of the loaded component in the wind power transmission chain based on the above-mentioned finite element model of the self-aligning roller bearing by driving the processor 12 to execute the specific computer program correspondingly, to obtain the finite element strength analysis result of the loaded component, and the stress distribution data of the outer ring raceway surface or the inner ring raceway surface of the corresponding finite element model of the self-aligning roller bearing under complex load.

[0066] It can be understood that, Figure 1 The block diagram shown is only one constituent schematic diagram of the computer device 10, and the computer device 10 can further include more or fewer components than those shown in the figure, or have a different configuration from that shown in the figure. Figure 1 The components shown in the figure can be realized in hardware, software or a combination thereof. Figure 1 Figure 1 The components shown in the figure can be realized in 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: Acquire actual bearing dimensions of the target physical spherical roller bearing, wherein the actual bearing dimensions include the axial cross-sectional dimensions of the physical bearing outer ring, the physical bearing inner ring, and a single physical roller of the target physical spherical roller bearing.

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

[0071] Step S220: constructing a three-dimensional model of the outer ring that matches the profile of the outer ring 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 with Figure 2 The axial longitudinal section diagram of the corresponding outer ring three-dimensional model 21. After obtaining the axial cross-sectional dimensions 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 cross-sectional dimensions of the physical bearing outer ring (i.e., Figure 3(b) is a 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 close to the concave arc edge of 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 first rotation axis and the two parallel sides connecting the concave arc edge of the first two-dimensional figure 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 respective axial cross-sectional dimensions of the physical bearing inner ring and the single physical 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 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 physical bearing inner ring and the single physical roller in the target physical spherical roller bearing, the computer device 10 can select any 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 physical bearing inner ring and the two rows of physical rollers in the same axial plane (that is, any plane where the rotation center axis of the target physical spherical roller bearing is located), construct a corresponding graphic contour formed by connecting the axial cross-sectional dimensions of each of the physical bearing inner ring and the two physical rollers (that is, in the second two-dimensional graphic). 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 physical bearing, each drum-shaped pattern corresponds to the axial cross-sectional size of a physical 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 physical bearing and the two rows of physical 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 a side away from the edge of the second two-dimensional figure corresponding to the physical roller (i.e., the mapping edge of the drum-shaped pattern on the second two-dimensional figure), and rotates the second two-dimensional figure 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 physical rollers in the target physical spherical roller bearing are respectively 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 physical bearing, and the long straight side of the second two-dimensional figure close to the second rotation axis (i.e., the long side of the corresponding rectangular pattern that is not connected by the drum-shaped 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 with 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 bearing inner and outer rings 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 (the concave-shaped pattern filled with left oblique lines) and the first two-dimensional figure (the 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) the three-dimensional model structure shown). Wherein the inner side surface of the outer ring three-dimensional model 21 is dimensionally matched with the outer side surface of the inner ring and roller assembly three-dimensional model 22, there is only one set of frictional contact between surfaces in the target bearing finite element model, which is substantially used to characterize the frictional contact between the actual bearing roller and the outer ring raceway surface, to ensure that the target bearing finite element model can characterize the roller normal pressure transmission form of the actual self-aligning roller bearing (i.e., the actual roller only transmits normal pressure between the inner and outer rings of the bearing when extruded) under any scenario, and the inner and outer rings do not transmit bending moment under the scenario of relative deflection between the inner and outer rings, while ensuring that the target bearing finite element model has better convergence performance relative to the self-aligning roller bearing model constructed by using the existing self-aligning roller bearing finite element simplified modeling method, to improve the finite element analysis efficiency.

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

[0079] In the present embodiment, the computer device 10 can perform physical element 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 to debug the actual elastic modulus of the inner ring and roller assembly three-dimensional model 22 in the target bearing finite element model multiple times, to check whether the radial stiffness of the target bearing finite element model is equivalent to the radial stiffness of the target actual self-aligning roller bearing, until the expected equivalent elastic modulus is debugged, which can ensure that the target bearing finite element model has the same radial stiffness as the target actual self-aligning roller bearing, so as to directly use the expected equivalent elastic modulus to improve the accuracy of the finite element strength analysis result in the subsequent finite element strength analysis process for the loaded components in the wind power transmission chain, and to ensure that the outer ring raceway surface stress distribution data analyzed for the target bearing finite element model has high data reliability.

[0080] Therefore, by performing the above steps S210-S250, the present application can perform finite element model simplified modeling for any actual self-aligning roller bearing, so that the constructed self-aligning roller bearing finite element model can characterize the actual force transmission form (i.e., roller normal pressure transmission form) of the actual self-aligning roller bearing under any scenario (including the scenario of relative deflection between the inner and outer rings of the bearing), so as to improve the accuracy of the finite element strength analysis result for 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 self-aligning roller bearing finite element model under complex load.

[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 of the physical spherical roller bearing (i.e., the roller normal pressure transmission form) 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 FIG3 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: Acquire actual bearing dimensions of the target physical spherical roller bearing, wherein the actual bearing dimensions include the axial cross-sectional dimensions of the physical bearing outer ring, the physical bearing inner ring, and a single physical roller of the target physical spherical roller bearing.

[0084] Step S320: constructing a three-dimensional model of the inner ring of the physical bearing 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 with Figure 6 The computer device 10, after obtaining the axial cross-sectional dimensions of the inner ring of the target solid spherical roller bearing, 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 cross-sectional dimensions 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 portion formed by two adjacent raised edges corresponds separately to a raceway on the inner ring of the solid bearing.

[0086] Next, the computer device 10 determines a third rotation axis on the side away from the raised edge of the third two-dimensional figure in the third plane, and rotates the third two-dimensional figure around the third rotation axis to construct a three-dimensional model, thereby obtaining a corresponding inner circle three-dimensional model 31 (i.e. Figure 7 (a) shows an inner ring three-dimensional model 31), wherein the long straight edge of the third two-dimensional figure 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: constructing a three-dimensional model of the outer ring and roller assembly according to the respective axial cross-sectional dimensions of the physical bearing outer ring and the single physical roller.

[0088] In this embodiment, refer to Figure 8 (a) and Figure 8 (b), where Figure 8 (a) is Figure 6 The corresponding schematic diagram of the outer ring roller assembly three-dimensional model 32, Figure 8 (b) is with Figure 6 A schematic diagram of the axial longitudinal section of the corresponding outer ring and roller assembly three-dimensional model 32. After obtaining the axial cross-sectional dimensions of the physical bearing outer ring and the single physical roller in the target physical spherical roller bearing, the computer device 10 can select any plane in the three-dimensional model space as the fourth plane (wherein, the fourth plane may or may not belong to the same plane as the third plane), and then, in the fourth plane, based on the relative posture relationship between the physical bearing outer ring and the two rows of physical rollers in the same axial plane (i.e., any plane where the rotation center axis of the target physical spherical roller bearing is located) when the inner and outer rings of the bearing are not deflected, construct a corresponding graphic contour formed by connecting the axial cross-sectional dimensions of the physical bearing outer ring and the two physical rollers (i.e., in the fourth two-dimensional graphic). Figure 8 (b) is a “兀”-shaped pattern at the top position and filled with multiple left-slanting lines), wherein the fourth two-dimensional pattern can be regarded as a connection between a rectangular pattern and two drum-shaped patterns with arc-shaped pattern edges, the rectangular pattern corresponds to the axial cross-sectional size of the outer ring of the physical bearing, each drum-shaped pattern corresponds to the axial cross-sectional size of a physical 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 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 in a non-deflected state”.

[0089] Next, the computer device 10 determines a fourth rotation axis in the fourth plane that is located on the side of the arc-shaped edge of the fourth two-dimensional figure corresponding to the physical roller (i.e., the mapping edge of the drum-shaped pattern on the fourth two-dimensional figure), and rotates the fourth two-dimensional figure around the fourth rotation axis to construct a three-dimensional model, thereby obtaining a corresponding outer ring roller assembly three-dimensional model 32 (i.e., Figure 8 (a) shows the outer ring roller assembly three-dimensional model 32, at this time, the two rows of physical rollers in the target physical spherical roller bearing are respectively simplified into an equivalent circular ring structure on the inner side of the outer ring roller assembly three-dimensional model 32, the outer ring roller assembly three-dimensional model 32 has the same outer diameter as the outer ring of the physical bearing, and the long straight side of the fourth two-dimensional figure away from the fourth rotation axis (i.e., the long side of the corresponding rectangular pattern that is not connected to the drum-shaped pattern) is parallel to the fourth rotation axis.

[0090] Step S340 , 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.

[0091] In this embodiment, refer to Figure 9 (a) and Figure 9 (b), where Figure 9 (a) is Figure 6 The corresponding model diagram of the target bearing finite element model, Figure 9 (b) is with Figure 6 The corresponding axial longitudinal section diagram of the target bearing finite element model. 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 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 inner ring three-dimensional model 31 is in friction contact with the inner surface of the outer ring roller assembly three-dimensional model 32 (see Figure 9 The fourth two-dimensional figure (the “兀”-shaped pattern filled with left oblique lines) and the third two-dimensional figure (the “山”-shaped 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 9(a) the three-dimensional model structure shown). Wherein the outer side surface of the inner ring three-dimensional model 31 is dimensionally matched with the inner side surface of the outer ring roller assembly three-dimensional model 32, only a set of surface-to-surface frictional contact exists in the target bearing finite element model, and the set of surface-to-surface frictional contact is substantially used to characterize the frictional contact between the actual bearing rollers 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 actual self-aligning roller bearing (i.e., the actual rollers only transmit the normal pressure between the inner and outer rings of the bearing when being extruded) in the scenario of no deflection of the inner and outer rings of the bearing, and the bending moment transmission between the inner and outer rings of the bearing does not occur in the scenario of no deflection of the inner and outer rings of the bearing, while ensuring that the target bearing finite element model has better convergence performance relative to the self-aligning roller bearing model constructed by using the existing self-aligning roller bearing finite element simplified modeling method, so as to improve the finite element analysis efficiency.

[0092] In step S350, the bearing radial stiffness analysis is performed on the target bearing finite element model, and the expected equivalent elastic modulus of the target bearing finite element model associated with the outer ring roller assembly three-dimensional model is obtained.

[0093] In the present embodiment, the computer device 10 can perform the physical element mesh division on the constructed target bearing finite element model, and then perform the bearing radial stiffness analysis based on the target bearing finite element model after the mesh division, so as to debug the actual elastic modulus of the outer ring roller assembly three-dimensional model 32 in the target bearing finite element model for multiple times, to check whether the radial stiffness of the target bearing finite element model is equivalent to the radial stiffness of the target actual self-aligning roller bearing, until the expected equivalent elastic modulus is debugged, which can ensure that the target bearing finite element model has the same radial stiffness as the target actual self-aligning roller bearing, so as to directly use the expected equivalent elastic modulus to improve the accuracy of the finite element strength analysis result of the loaded components in the wind power transmission chain in the scenario of no deflection of the inner and outer rings of the bearing in the subsequent finite element strength analysis process, and to ensure that the inner ring raceway surface stress distribution data analyzed based on the target bearing finite element model has high data reliability.

[0094] Therefore, by performing the above steps S310-S350, the present application can construct a self-aligning roller bearing finite element model adapted to the scenario of no deflection of the inner and outer rings of the bearing for any actual self-aligning roller bearing, so that the corresponding self-aligning roller bearing finite element model effectively characterizes the actual force transmission form (i.e., the roller normal pressure transmission form) of the actual self-aligning roller bearing in the scenario of no deflection of the inner and outer rings of the bearing, so as to effectively analyze the stress distribution data of the inner ring raceway surface of the self-aligning roller bearing finite element model under the action of complex load, and to improve the accuracy of the finite element strength analysis result of the loaded components in the wind power transmission chain in the scenario of no deflection of the inner and outer rings of the bearing, in the process of performing the finite element analysis on the strength of the loaded components in the wind power transmission chain by using the self-aligning roller bearing finite element model.

[0095] In the present application, in order to ensure that the computer device 10 performs finite element analysis on the strength of the loaded component in the wind power transmission chain based on the above-mentioned finite element model of the self-aligning roller bearing which has been constructed (for example, the finite element model of the corresponding target bearing) Figure 2 or Figure 6 the stress distribution data of the outer ring raceway surface or the inner ring raceway surface of the finite element model of the corresponding self-aligning roller bearing under the action of complex load, the present embodiment realizes the foregoing purpose by providing a wind power transmission chain analysis method, which will be described in detail below.

[0096] Please refer to Figure 10 , Figure 2 FIG. 1 is a flowchart of the wind power transmission chain analysis method provided by the present embodiment. In the present embodiment, the wind power transmission chain analysis method can include steps S410-S430.

[0097] Step S410: Obtain the target bearing finite element model of the target entity self-aligning roller bearing included in the wind turbine transmission chain to be detected, and the component finite element model of the loaded component to be detected included in the wind turbine transmission chain to be detected.

[0098] In the present embodiment, the target bearing finite element model of the target entity self-aligning roller bearing can be constructed by using the first self-aligning roller bearing modeling method shown in FIG. 2, or can be constructed by using the second self-aligning roller bearing modeling method shown in FIG. 3. Figure 6 Figure 2

[0099] Step S420: Model assembly is performed on the target bearing finite element model and the component finite element model to obtain the corresponding transmission chain finite element model.

[0100] In the present embodiment, the computer device 10 can perform model assembly on the target bearing finite element model and the component finite element model in the same three-dimensional model space according to the relative pose relationship between the target entity self-aligning roller bearing and the loaded component to be detected in the wind turbine transmission chain to be detected, to obtain the transmission chain finite element model which is adapted to the wind turbine transmission chain to be detected.

[0101] Step S430: Based on the transmission chain finite element model, the strength of the loaded component is analyzed according to the expected equivalent elastic modulus of the target bearing finite element model, the material information of the loaded component to be detected, and the finite element boundary conditions of the loaded component to be detected, to obtain the component strength result of the loaded component to be detected, 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 the present 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 power train finite element model (for example, Figure 6 the corresponding roller inner ring combined three-dimensional model 22, or Figure 2 the corresponding outer ring roller combined three-dimensional model 32), and then load the material information and the finite element boundary conditions of the loaded part to be detected on the part finite element model in the power train finite element model, and then perform strength analysis of the loaded part under different loads based on the power train finite element model, to obtain the part strength results (i.e. the finite element strength analysis results) of the loaded part to be detected under different loads, and 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. Wherein, when the target bearing finite element model is constructed by the first type of self-aligning roller bearing modeling method shown in Figure 6 , the raceway contact surface between the two three-dimensional models included in the target bearing finite element model is the outer ring raceway surface for representing the target solid self-aligning roller bearing; and when the target bearing finite element model is constructed by the second type of self-aligning roller bearing modeling method shown in Figure 2 , the raceway contact surface between the two three-dimensional models included in the target bearing finite element model is the inner ring raceway surface for representing the target solid self-aligning roller bearing.

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

[0104] The above is only various embodiments of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A spherical roller bearing modeling method, characterized in that: The method comprises: Acquire actual bearing dimensions of a target physical spherical roller bearing, wherein the actual bearing dimensions include axial cross-sectional dimensions of a physical bearing outer ring, a physical bearing inner ring, and a single physical roller of the target physical spherical roller bearing; Constructing a three-dimensional model of the outer ring that matches the profile of the outer ring of the physical bearing according to the axial cross-sectional dimensions of the outer ring of the physical 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 profile of the outer ring of the physical bearing according to the axial cross-sectional dimensions of the outer ring of the physical bearing comprises: Constructing a first two-dimensional graphic in a first plane, wherein the corresponding graphic contour is 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 has the same inner diameter as the outer ring of the solid bearing, and the first rotation axis and the two parallel sides 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, based on the relative positional relationship between the two raceways on the inner ring of the physical bearing and the two rows of physical rollers in the same axial plane, a second two-dimensional graphic is constructed, wherein the corresponding graphic contour is formed by connecting the axial cross-sectional dimensions of the inner ring of the physical bearing and the two physical rollers; Determine in the second plane a second rotation axis located on the side of the edge of the figure corresponding to the solid roller away from the second two-dimensional figure, and rotate the second two-dimensional figure around the second rotation axis to construct a three-dimensional model to obtain a three-dimensional model of the roller inner ring assembly, wherein the three-dimensional model of the roller inner ring assembly 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 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 actual bearing dimensions of a target physical spherical roller bearing, wherein the actual bearing dimensions include axial cross-sectional dimensions of a physical bearing outer ring, a physical bearing inner ring, and a single physical roller of the target physical spherical roller bearing; 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 dimensions of the inner ring of the solid bearing; Constructing a three-dimensional model of the outer ring and roller assembly according to the respective axial cross-sectional dimensions of the solid bearing outer ring 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 profile of the inner ring of the solid bearing according to the axial cross-sectional dimensions of the inner ring of the solid bearing comprises: Constructing a third two-dimensional graphic in a third plane, wherein the corresponding graphic contour is 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 located 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 has the same inner diameter as the inner ring of the solid bearing, and the long straight edge of the third two-dimensional figure close to the third rotation axis is 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 respective axial cross-sectional dimensions of the physical bearing outer ring and the single physical roller comprises: In a fourth plane, based on the relative positional relationship between the physical bearing outer ring and the two rows of physical rollers in the same axial plane when the inner and outer rings of the bearing are not rotated, a fourth two-dimensional graphic is constructed, wherein the corresponding graphic contour is formed by connecting the axial cross-sectional dimensions of the physical bearing outer ring and the two physical rollers; A fourth rotation axis is determined in the fourth plane, which is located on the side of the edge of the arc-shaped figure corresponding to the solid roller and 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, so as to obtain a three-dimensional model of the outer ring roller assembly, wherein the three-dimensional model of the outer ring roller assembly has the same outer diameter as 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: Obtaining a target bearing finite element model of a target entity spherical roller bearing included in the transmission chain of the wind turbine 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 to be tested, wherein the target bearing finite element model of the target entity spherical roller bearing is constructed using the spherical roller bearing modeling method according to 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 loaded component to be tested and the finite element boundary conditions of the loaded component to be tested, a strength analysis of the loaded component is performed based on the transmission chain finite element model to obtain the component strength results of the loaded component 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, 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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