A method, device and equipment for determining structure parameters of a spherical spiral groove bearing

Abstract

The application provides a kind of spherical spiral groove bearing structure parameter determination method, device and equipment, relate to high-speed rotating machinery design field.The spherical spiral groove bearing structure parameter determination method includes: obtaining the basic parameters of spherical spiral groove bearing;According to the basic parameters, confirm the preset function;According to the preset condition, the preset function is optimized, and the target function is obtained;According to the target function, the target parameters of the spherical spiral groove bearing are determined.The scheme of the application optimizes the structure parameters of the spherical spiral groove bearing, meets the needs of the spherical spiral groove bearing under low friction power consumption and low floating speed, reduces the wear of the spherical spiral groove bearing in the starting stage, prolongs the service life of the spherical spiral groove bearing, and improves the comprehensive performance of the spherical spiral groove bearing.

Description

Technical Field

[0001] This invention relates to the field of high-speed rotating machinery design, and in particular to a method, apparatus and equipment for determining the structural parameters of a spherical helical groove bearing. Background Technology

[0002] Spherical spiral groove bearings have a series of advantages during operation, such as no noise, low friction, long service life, and no wear limitations. They play an irreplaceable role in precision engineering, ultra-precision engineering, space technology, and medical devices. However, existing spherical spiral groove bearings cannot simultaneously meet the requirements of low friction power consumption and low starting speed (the starting speed is the speed at which the bearing reaches full fluid lubrication). As a result, the bearings often experience excessive wear during the start-up phase, which seriously affects their service life. Summary of the Invention

[0003] This invention provides a method, apparatus, and equipment for determining the structural parameters of a spherical helical groove bearing, which solves the problem of excessive wear during the startup phase that often occurs in existing spherical helical groove bearings.

[0004] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows:

[0005] This invention provides a method for determining the structural parameters of a spherical helical groove bearing, comprising:

[0006] Obtain the basic parameters of the spherical spiral groove bearing;

[0007] Based on the aforementioned basic parameters, confirm the preset function;

[0008] The preset function is optimized according to preset conditions to obtain the target function;

[0009] The target parameters of the spherical helical groove bearing are determined based on the objective function.

[0010] Optionally, obtain the basic parameters of the spherical helical groove bearing, including:

[0011] The basic parameters of the spherical helical groove bearing are obtained based on the stator, the rotor disposed within the stator, and the fluid located between the stator and the rotor; wherein,

[0012] In operation, the rotor is suspended within the stator by the fluid and rotates within the stator. Optionally, the basic parameters include:

[0013] The bearing's housing radius r1, bearing ball head radius r2, clearance h between the housing and ball head, groove depth l, and groove width b. g Platform width b rThe helix angle β, the first wrap angle φ1 of the helix groove, the second wrap angle φ2 of the helix groove, and the number of helix grooves n.

[0014] Optionally, based on the aforementioned basic parameters, a preset function is determined, including:

[0015] Based on the aforementioned basic parameters, determine the fixed parameters and variable parameters of the preset function;

[0016] The fixed parameter values ​​are determined based on the bearing load capacity required when the spherical helical groove bearing is in operation.

[0017] Based on the fixed parameter values ​​and variable parameters, and according to the frictional power consumption of the spherical helical groove bearing at the operating speed and the lifting speed of the spherical helical groove bearing, the preset function is determined;

[0018] The fixed parameters are: bearing housing radius r1, bearing ball head radius r2, clearance h between housing and ball head, first wrap angle φ1 of spiral groove, second wrap angle φ2 of spiral groove, and number of spiral grooves n.

[0019] The variable parameter is: platform width b r With slot width b g The ratio Υ, the ratio H of the gap h to the sum of the groove depth l and the gap h, and the helix angle β.

[0020] Optionally, the preset function is:

[0021]

[0022] in,

[0023] f1(φ′1,φ′2)=cos 3 φ′2-cos 3 φ′1+3(cosφ′1-cosφ′2)

[0024] f2(g2,φ1,φ2)=[cos 3 φ2-cos 3 φ1+3(cosφ1-cosφ2)]g2(β,γ,H)+cos 3 φ1-3cosφ1+2;

[0025]

[0026]

[0027]

[0028]

[0029] Where P is the frictional power consumption of the spherical helical groove bearing at the operating speed, and ω s Let μ be the buoyancy coefficient of the spherical helical groove bearing at its operating speed, μ0 be the dynamic viscosity coefficient of the fluid at its operating speed, F be the load-bearing force on the rotor at the moment of buoyancy, ω be the operating speed of the rotor, r1 be the radius of the bearing housing, r2 be the radius of the ball head of the spherical helical groove bearing, h be the clearance between the bearing housing and the ball head, l be the groove depth, and b be the buoyancy coefficient of the bearing. g For the groove width, b r φ1 is the platform width, φ2 is the first wrap angle of the spiral groove, φ2 is the second wrap angle of the spiral groove, n is the number of spiral grooves; Υ is the platform width b. r With slot width b g The ratio of Υ is 0.2 to 5; H is the ratio of the gap h to the sum of the groove depth l and the gap h, and the value of H is 0.2 to 0.8; β is the helix angle, and the value of β is 20 degrees to 50 degrees.

[0030] Optionally, the preset function can be optimized according to preset conditions to obtain the target function, including:

[0031] Based on the design requirements of the spherical helical groove bearing, the upper limit value P of the frictional power consumption of the spherical helical groove bearing is obtained. m and the upper limit of the buoyancy speed ω of the spherical helical groove bearing m ;

[0032] Within a preset range of the variable parameters, the values ​​of the variable parameters in the preset function are randomly changed until the frictional power consumption P of the spherical helical groove bearing is less than the upper limit value P of the frictional power consumption of the spherical helical groove bearing. m And the buoyancy speed ω of the spherical helical groove bearing s The buoyancy speed ω is less than the upper limit of the buoyancy speed of the spherical helical groove bearing. m Until then, and obtain the target function.

[0033] Optionally, the target parameters are determined based on the objective function, including:

[0034] Based on the objective function, determine the platform width b. r With slot width b g The parameters of the ratio Υ, the ratio H of the gap h to the sum of the groove depth l and the gap h, and the parameters of the helix angle β;

[0035] According to the formula Υ=b r / b g and b r +b g =2πr² / n determines the platform width b r Parameters and slot width b g Parameters;

[0036] The parameters of the groove depth l are determined according to the formula H = h / (h + l);

[0037] Where n is the number of spiral grooves, r2 is the ball head radius of the bearing, and h is the clearance between the shaft socket and the ball head.

[0038] Embodiments of the present invention also provide a device for determining the structural parameters of a spherical helical groove bearing, comprising:

[0039] The acquisition module is used to obtain the basic parameters of the spherical helical groove bearing;

[0040] The processing module is used to confirm a preset function based on the basic parameters; optimize the preset function according to preset conditions to obtain a target function; and determine the target parameters of the spherical helical groove bearing based on the target function.

[0041] Embodiments of the present invention also provide a computing device, including: a processor and a memory storing a computer program, wherein the computer program, when run by the processor, executes the above-described method for determining the structural parameters of a spherical helical groove bearing.

[0042] Embodiments of the present invention also provide a computer-readable storage medium storing instructions that, when executed on a computer, cause the computer to perform the above-described method for determining the structural parameters of a spherical helical groove bearing.

[0043] The above-described solution of the present invention has at least the following beneficial effects:

[0044] The method for determining the structural parameters of a spherical helical groove bearing according to the present invention includes: obtaining the basic parameters of the spherical helical groove bearing; confirming a preset function based on the basic parameters; optimizing the preset function according to preset conditions to obtain a target function; and determining the target parameters of the spherical helical groove bearing based on the target function. Through optimized design of the structural parameters of the spherical helical groove bearing, the requirements of the bearing under low frictional power consumption and low starting speed are met, reducing wear during the start-up phase, extending the service life of the bearing, and improving its overall performance. Attached Figure Description

[0045] Figure 1 This is a flowchart of the method for determining the structural parameters of the spherical helical groove bearing of the present invention;

[0046] Figure 2 This is a schematic diagram of the structure of the spherical helical groove bearing stator of the present invention;

[0047] Figure 3 yes Figure 2 Enlarged view at point A;

[0048] Figure 4 This is a schematic diagram of the structure of the spherical helical groove bearing rotor of the present invention;

[0049] Figure 5 This is a schematic diagram of the module for determining the structural parameters of the spherical helical groove bearing of the present invention. Detailed Implementation

[0050] Exemplary embodiments of the invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0051] like Figures 1 to 5 As shown, an embodiment of the present invention proposes a method for determining the structural parameters of a spherical helical groove bearing, comprising:

[0052] Step 11: Obtain the basic parameters of the spherical helical groove bearing;

[0053] Step 12: Confirm the preset function based on the aforementioned basic parameters;

[0054] Step 13: Optimize the preset function according to preset conditions to obtain the target function;

[0055] Step 14: Determine the target parameters of the spherical helical groove bearing according to the objective function.

[0056] In this embodiment, the method for determining the structural parameters of the spherical helical groove bearing optimizes the structural parameters of the spherical helical groove bearing through an objective function, thereby meeting the requirements of the spherical helical groove bearing under low friction power consumption and low starting speed operation, reducing the wear of the spherical helical groove bearing during the start-up phase, extending the service life of the spherical helical groove bearing, and improving the overall performance of the spherical helical groove bearing.

[0057] In an optional embodiment of the present invention, step 11 may include:

[0058] Based on the stator 31 of the spherical helical groove bearing, the rotor 32 disposed within the stator 31, and the fluid located between the stator 31 and the rotor 32, the basic parameters of the spherical helical groove bearing are obtained; wherein, in the use state, the rotor 32 is suspended within the stator 31 by the fluid and rotates within the stator 31.

[0059] In an optional embodiment of the present invention, the basic parameters include:

[0060] The bearing's housing radius r1, bearing ball head radius r2, clearance h between the housing and ball head, groove depth l, and groove width b. g Platform width b r The helix angle β, the first wrap angle φ1 of the helix groove, the second wrap angle φ2 of the helix groove, and the number of helix grooves n.

[0061] In an optional embodiment of the present invention, step 12 may include:

[0062] Based on the aforementioned basic parameters, determine the fixed parameters and variable parameters of the preset function;

[0063] The fixed parameter values ​​are determined based on the bearing load capacity required when the spherical helical groove bearing is in operation.

[0064] Based on the fixed parameter values ​​and variable parameters, and according to the frictional power consumption of the spherical helical groove bearing at the operating speed and the lifting speed of the spherical helical groove bearing, the preset function is determined;

[0065] The fixed parameters are: bearing housing radius r1, bearing ball head radius r2, clearance h between housing and ball head, first wrap angle φ1 of spiral groove, second wrap angle φ2 of spiral groove, and number of spiral grooves n.

[0066] The variable parameter is: platform width b r With slot width b g The ratio Υ, the ratio H of the gap h to the sum of the groove depth l and the gap h, and the helix angle β.

[0067] In this embodiment, the fixed parameters are determined based on the bearing load capacity and empirical values ​​that affect the spherical helical groove bearing, while the variable parameters are determined based on the bearing friction power consumption and buoyancy speed. By determining the fixed parameters and the variable parameters, the accuracy of the preset function is ensured.

[0068] In an optional embodiment of the present invention, the preset function is:

[0069]

[0070] in,

[0071] f1(φ′1,φ′2)=cos 3 φ′2-cos 3 φ′1+3(cosφ′1-cosφ′2)

[0072] f2(g2,φ1,φ2)=[cos 3 φ2-cos 3φ1+3(cosφ1-cosφ2)]g2(β,γ,H)+cos 3 φ1-3cosφ1+2;

[0073]

[0074]

[0075]

[0076]

[0077] Where P is the frictional power consumption of the spherical helical groove bearing at the operating speed, and ω s Let μ be the buoyancy coefficient of the spherical helical groove bearing at its operating speed, μ0 be the dynamic viscosity coefficient of the fluid at its operating speed, F be the load-bearing force on the rotor at the moment of buoyancy, ω be the operating speed of the rotor, r1 be the radius of the bearing housing, r2 be the radius of the ball head of the spherical helical groove bearing, h be the clearance between the bearing housing and the ball head, l be the groove depth, and b be the buoyancy coefficient of the bearing. g For the groove width, b r φ1 is the platform width, φ2 is the first wrap angle of the spiral groove, φ2 is the second wrap angle of the spiral groove, n is the number of spiral grooves; Υ is the platform width b. r With slot width b g The ratio of Υ is 0.2 to 5; H is the ratio of the gap h to the sum of the groove depth l and the gap h, and the value of H is 0.2 to 0.8; β is the helix angle, and the value of β is 20 degrees to 50 degrees.

[0078] In an optional embodiment of the present invention, step 13 may include:

[0079] Based on the design requirements of the spherical helical groove bearing, the upper limit value P of the frictional power consumption of the spherical helical groove bearing is obtained. m and the upper limit of the buoyancy speed ω of the spherical helical groove bearing m ;

[0080] Within a preset range of the variable parameters, the values ​​of the variable parameters in the preset function are randomly changed until the frictional power consumption P of the spherical helical groove bearing is less than the upper limit value P of the frictional power consumption of the spherical helical groove bearing. m And the buoyancy speed ω of the spherical helical groove bearing s The buoyancy speed ω is less than the upper limit of the buoyancy speed of the spherical helical groove bearing. m Until then, and obtain the target function.

[0081] In this embodiment, after determining the fixed parameter values, all fixed parameter values ​​are substituted into a preset function. Then, within a preset range of the variable parameters, the values ​​of the variable parameters in the preset function are randomly changed until the frictional power consumption P of the spherical helical groove bearing is less than the upper limit value P of the frictional power consumption of the spherical helical groove bearing. m And the buoyancy speed ω of the spherical helical groove bearing s The buoyancy speed ω is less than the upper limit of the buoyancy speed of the spherical helical groove bearing. m Until then, and obtain the objective function;

[0082] In this embodiment, during the optimization of the preset function, in a preferred embodiment, the initial values ​​of the variable parameters can be set as γ = 0.2, H = 0.2, and β = 20°. Then, random values ​​are obtained by taking values ​​of γ, H, and β with interval steps of 0.2, 0.1, and 10° respectively to optimize the preset function. Specifically, after randomly obtaining the values ​​of the variable parameters, the values ​​of the variable parameters are substituted into the preset function. In the process, the output values ​​P and ω of the preset function are obtained respectively. s Then, the output value P of the preset function is compared with the upper limit value Pm of the frictional power consumption of the spherical helical groove bearing, and the output value ω of the preset function is... s The upper limit of the buoyancy speed ω of the spherical helical groove bearing m The output values ​​P and ω of the preset function are compared. s Simultaneously, the frictional power consumption P of the spherical helical groove bearing is less than the upper limit value P of the frictional power consumption of the spherical helical groove bearing. m And the buoyancy speed ω of the spherical helical groove bearing s The buoyancy speed ω is less than the upper limit of the buoyancy speed of the spherical helical groove bearing. m If the condition is met, optimization will stop, and the preset function that meets the requirements will be output as the target function.

[0083] Simultaneously, during the optimization process, multiple sets of preset functions that meet the requirements can be obtained, and then the output values ​​P and ω of each set of preset functions can be calculated. s The comparison is performed, and the smallest set is output as the optimal solution.

[0084] In an optional embodiment of the present invention, step 14 may include:

[0085] Based on the objective function, determine the platform width b. r With slot width b g The parameters of the ratio Υ, the ratio H of the gap h to the sum of the groove depth l and the gap h, and the parameters of the helix angle β;

[0086] According to the formula Υ=b r / b gand b r +b g =2πr² / n determines the platform width b r Parameters and slot width b g Parameters;

[0087] The parameters of the groove depth l are determined according to the formula H = h / (h + l);

[0088] Where n is the number of spiral grooves, r2 is the ball head radius of the bearing, and h is the clearance between the shaft socket and the ball head.

[0089] In this embodiment, once the objective function is determined, the optimal parameters of Y, H, and β can be determined based on the final values ​​of Y, H, and β during optimization. Then, the platform width b can be determined based on the optimal parameters of Y, H, and β. r The parameters of the groove depth l are determined; finally, combined with the initially determined fixed parameters, a spherical helical groove bearing that simultaneously meets the requirements of low friction power consumption and low starting speed can be constructed. The spherical helical groove bearing has the advantages of low wear and long service life during the start-up phase.

[0090] In a preferred embodiment, when the upper limit value P of the frictional power consumption of the spherical helical groove bearing is... m The maximum lifting speed ω of the spherical helical groove bearing is 150W. m For 100S -1 When the required bearing load capacity of the spherical helical groove bearing in its working state is 200N, fixed parameter values ​​are determined based on the required bearing load capacity. These values ​​include: bearing housing radius r1 is 5.01mm, bearing ball head radius r2 is 5.00mm, clearance h between the housing and ball head is 0.01mm, first wrap angle φ1 of the helical groove is 60°, second wrap angle φ2 of the helical groove is 120°, and the number of helical grooves n is 10. Within the preset range of these variable parameters, the values ​​of the variable parameters in the preset function are randomly changed until the frictional power consumption P of the spherical helical groove bearing is less than the upper limit value P of the frictional power consumption of the spherical helical groove bearing. m And the buoyancy speed ω of the spherical helical groove bearing s The buoyancy speed ω is less than the upper limit of the buoyancy speed of the spherical helical groove bearing. m Up to this point, the optimal parameter for Υ is 1, the optimal parameter for H is 0.5, and the optimal parameter for β is 40°.

[0091] According to the formula Υ=b r / b g and b r +b g =2πr² / n determines the platform width b r The parameters are 1.57mm and the groove width b. gThe parameter is 1.57mm;

[0092] The parameter for the groove depth l is determined to be 0.01 mm according to the formula H = h / (h + l).

[0093] An embodiment of the present invention provides a device 20 for determining the structural parameters of a spherical helical groove bearing, comprising:

[0094] Module 21 is used to obtain the basic parameters of the spherical helical groove bearing;

[0095] The processing module 22 is used to confirm the preset function based on the basic parameters; optimize the preset function according to preset conditions to obtain the target function; and determine the target parameters of the spherical helical groove bearing based on the target function.

[0096] Optionally, obtain the basic parameters of the spherical helical groove bearing, including:

[0097] The basic parameters of the spherical helical groove bearing are obtained based on the stator, the rotor disposed within the stator, and the fluid located between the stator and the rotor; wherein,

[0098] In operation, the rotor is suspended within the stator by the fluid and rotates within the stator. Optionally, the basic parameters include:

[0099] The bearing's housing radius r1, bearing ball head radius r2, clearance h between the housing and ball head, groove depth l, and groove width b. g Platform width b r The helix angle β, the first wrap angle φ1 of the helix groove, the second wrap angle φ2 of the helix groove, and the number of helix grooves n.

[0100] Optionally, based on the aforementioned basic parameters, a preset function is determined, including:

[0101] Based on the aforementioned basic parameters, determine the fixed parameters and variable parameters of the preset function;

[0102] The fixed parameter values ​​are determined based on the bearing load capacity required when the spherical helical groove bearing is in operation.

[0103] Based on the fixed parameter values ​​and variable parameters, and according to the frictional power consumption of the spherical helical groove bearing at the operating speed and the lifting speed of the spherical helical groove bearing, the preset function is determined;

[0104] The fixed parameters are: bearing housing radius r1, bearing ball head radius r2, clearance h between housing and ball head, first wrap angle φ1 of spiral groove, second wrap angle φ2 of spiral groove, and number of spiral grooves n.

[0105] The variable parameter is: platform width br With slot width b g The ratio Υ, the ratio H of the gap h to the sum of the groove depth l and the gap h, and the helix angle β.

[0106] Optionally, the preset function is:

[0107]

[0108] in,

[0109] f1(φ′1,φ′2)=cos 3 φ′2-cos 3 φ′1+3(cosφ′1-cosφ′2)

[0110] f2(g2,φ1,φ2)=[cos 3 φ2-cos 3 φ1+3(cosφ1-cosφ2)]g2(β,γ,H)+cos 3 φ1-3cosφ1+2;

[0111]

[0112]

[0113]

[0114]

[0115] Where P is the frictional power consumption of the spherical helical groove bearing at the operating speed, and ω s Let μ be the buoyancy coefficient of the spherical helical groove bearing at its operating speed, μ0 be the dynamic viscosity coefficient of the fluid at its operating speed, F be the load-bearing force on the rotor at the moment of buoyancy, ω be the operating speed of the rotor, r1 be the radius of the bearing housing, r2 be the radius of the ball head of the spherical helical groove bearing, h be the clearance between the bearing housing and the ball head, l be the groove depth, and b be the buoyancy coefficient of the bearing. g For the groove width, b r φ1 is the platform width, φ2 is the first wrap angle of the spiral groove, φ2 is the second wrap angle of the spiral groove, n is the number of spiral grooves; Υ is the platform width b. r With slot width b g The ratio of Υ is 0.2 to 5; H is the ratio of the gap h to the sum of the groove depth l and the gap h, and the value of H is 0.2 to 0.8; β is the helix angle, and the value of β is 20 degrees to 50 degrees.

[0116] Optionally, the preset function can be optimized according to preset conditions to obtain the target function, including:

[0117] Based on the design requirements of the spherical helical groove bearing, the upper limit value P of the frictional power consumption of the spherical helical groove bearing is obtained. m and the upper limit of the buoyancy speed ω of the spherical helical groove bearing m ;

[0118] Within a preset range of the variable parameters, the values ​​of the variable parameters in the preset function are randomly changed until the frictional power consumption P of the spherical helical groove bearing is less than the upper limit value P of the frictional power consumption of the spherical helical groove bearing. m And the buoyancy speed ω of the spherical helical groove bearing s The buoyancy speed ω is less than the upper limit of the buoyancy speed of the spherical helical groove bearing. m Until then, and obtain the target function.

[0119] Optionally, the target parameters are determined based on the objective function, including:

[0120] Based on the objective function, determine the platform width b. r With slot width b g The parameters of the ratio Υ, the ratio H of the gap h to the sum of the groove depth l and the gap h, and the parameters of the helix angle β;

[0121] According to the formula Υ=b r / b g and b r +b g =2πr² / n determines the platform width b r Parameters and slot width b g Parameters;

[0122] The parameters of the groove depth l are determined according to the formula H = h / (h + l);

[0123] Where n is the number of spiral grooves, r2 is the ball head radius of the bearing, and h is the clearance between the shaft socket and the ball head.

[0124] It should be noted that this device corresponds to the method for determining the structural parameters of the spherical helical groove bearing described above. All implementation methods described above are applicable to the embodiments of this device and can achieve the same technical effect.

[0125] Embodiments of the present invention also provide a computing device, including: a processor and a memory storing a computer program, wherein the computer program, when executed by the processor, performs the above-described method for determining the structural parameters of a spherical helical groove bearing. All implementations in the above method embodiments are applicable to this embodiment and can achieve the same technical effects.

[0126] Embodiments of the present invention also provide a computer-readable storage medium storing instructions that, when executed on a computer, cause the computer to perform the aforementioned method for determining the structural parameters of a spherical helical groove bearing. All implementations in the above method embodiments are applicable to this embodiment and can achieve the same technical effects.

[0127] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this invention.

[0128] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0129] In the embodiments provided by this invention, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative. For instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms.

[0130] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0131] In addition, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0132] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this invention, essentially, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, ROM, RAM, magnetic disks, or optical disks.

[0133] Furthermore, it should be noted that in the apparatus and method of the present invention, it is obvious that the components or steps can be decomposed and / or recombined. These decompositions and / or recombinations should be considered equivalent solutions of the present invention. Moreover, the steps performing the above-described series of processes can naturally be executed in the order described, but are not necessarily required to be executed in chronological order; some steps can be executed in parallel or independently of each other. Those skilled in the art will understand that all or any step or component of the method and apparatus of the present invention can be implemented in any computing device (including processors, storage media, etc.) or network of computing devices, in hardware, firmware, software, or a combination thereof. This is something that those skilled in the art can achieve by using their basic programming skills after reading the description of the present invention.

[0134] Therefore, the object of the present invention can also be achieved by running a program or a set of programs on any computing device. The computing device can be a known general-purpose device. Therefore, the object of the present invention can also be achieved simply by providing a program product containing program code implementing the method or apparatus. That is, such a program product also constitutes the present invention, and the storage medium storing such a program product also constitutes the present invention. Obviously, the storage medium can be any known storage medium or any storage medium developed in the future. It should also be noted that in the apparatus and method of the present invention, it is obvious that the components or steps can be decomposed and / or recombined. These decompositions and / or recombinations should be considered equivalent to the present invention. Furthermore, the steps performing the above series of processes can naturally be performed in the order described, but are not necessarily required to be performed in chronological order. Some steps can be performed in parallel or independently of each other.

[0135] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A method for determining the structural parameters of a spherical helical groove bearing, characterized in that, include: Obtain the basic parameters of the spherical spiral groove bearing; Based on the aforementioned basic parameters, determine the preset function; The preset function is optimized according to preset conditions to obtain the target function; Based on the objective function, determine the target parameters of the spherical helical groove bearing; The preset function is: ； in, ; ； ； ； ； ； Where P is the frictional power consumption of the spherical helical groove bearing at the operating speed. Let μ be the buoyancy coefficient of the spherical helical groove bearing at its operating speed, μ0 be the dynamic viscosity coefficient of the fluid at its operating speed, F be the load-bearing force on the rotor at the moment of buoyancy, ω be the operating speed of the rotor, r1 be the radius of the bearing cavity, r2 be the radius of the ball head, h be the clearance between the bearing cavity and the ball head, l be the groove depth, and b be the buoyancy coefficient. g For the width of the slot, b r For the width of the platform, The first wrap angle of the spiral groove, γ is the second wrap angle of the spiral groove, n is the number of spiral grooves; γ is the platform width b. r With slot width b g The ratio of γ to h is 0.2 to 5; H is the ratio of the gap h to the sum of the groove depth l and the gap h, and the value of H is 0.2 to 0.8; β is the helix angle, and the value of β is 20 degrees to 50 degrees.

2. The method for determining the structural parameters of a spherical helical groove bearing according to claim 1, characterized in that, To obtain the basic parameters of a spherical helical groove bearing, including: The basic parameters of the spherical helical groove bearing are obtained based on the stator (31) of the spherical helical groove bearing, the rotor (32) disposed in the stator (31) and the fluid located between the stator (31) and the rotor (32); wherein, in the use state, the rotor (32) is suspended in the stator (31) by the fluid and rotates in the stator (31).

3. The method for determining the structural parameters of a spherical helical groove bearing according to claim 2, characterized in that, The basic parameters include: The bearing's housing radius r1, bearing ball head radius r2, clearance h between the housing and ball head, groove depth l, and groove width b. g Platform width b r Helix angle β, first wrap angle of the helix groove The second wrap angle of the spiral groove And the number of spiral grooves, n.

4. The method for determining the structural parameters of a spherical helical groove bearing according to claim 3, characterized in that, Based on the aforementioned basic parameters, a preset function is determined, including: Based on the aforementioned basic parameters, determine the fixed parameters and variable parameters of the preset function; The fixed parameter values ​​are determined based on the bearing load capacity required when the spherical helical groove bearing is in operation. Based on the fixed parameter values ​​and variable parameters, a preset function is determined according to the frictional power consumption of the spherical helical groove bearing at the operating speed and the lifting speed of the spherical helical groove bearing; The fixed parameters are: bearing housing radius r1, bearing ball head radius r2, clearance h between the housing and the ball head, and the first wrap angle of the helical groove. The second wrap angle of the spiral groove And the number of spiral grooves, n; The variable parameter is: platform width b r With slot width b g The ratio γ, the ratio H of the gap h to the sum of the groove depth l and the gap h, and the helix angle β.

5. The method for determining the structural parameters of a spherical helical groove bearing according to claim 4, characterized in that, The preset function is optimized according to preset conditions to obtain the target function, including: Based on the design requirements of the spherical helical groove bearing, the upper limit value P of the frictional power consumption of the spherical helical groove bearing is obtained. m and the upper limit of the buoyancy speed ω of the spherical helical groove bearing m ; Within a preset range of the variable parameters, the values ​​of the variable parameters in the preset function are randomly changed until the frictional power consumption P of the spherical helical groove bearing is less than the upper limit value P of the frictional power consumption of the spherical helical groove bearing. m And the buoyancy speed of the spherical helical groove bearing The buoyancy speed ω is less than the upper limit of the buoyancy speed of the spherical helical groove bearing. m Until then, and obtain the target function.

6. The method for determining the structural parameters of a spherical helical groove bearing according to claim 5, characterized in that, Based on the objective function, the objective parameters are determined, including: Based on the objective function, determine the platform width b. r With slot width b g The parameters of the ratio γ, the ratio H of the gap h to the sum of the groove depth l and the gap h, and the parameters of the helix angle β; According to the formula γ=b r / b g and b r +b g =2πr² / n determines the platform width b r Parameters and slot width b g Parameters; The parameters of the groove depth l are determined according to the formula H=h / (h+l); Where n is the number of spiral grooves, r2 is the ball head radius of the bearing, and h is the clearance between the shaft socket and the ball head.

7. A device for determining the structural parameters of a spherical helical groove bearing, characterized in that, The determining device is configured to implement the method as described in any one of claims 1 to 6, the determining device comprising: The acquisition module is used to obtain the basic parameters of the spherical helical groove bearing; The processing module is used to confirm a preset function based on the basic parameters; optimize the preset function according to preset conditions to obtain a target function; and determine the target parameters of the spherical helical groove bearing based on the target function.

8. A computing device, characterized in that, include: A processor, a memory storing a computer program, wherein the computer program, when executed by the processor, performs the method as described in any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that, A storage instruction that, when executed on a computer, causes the computer to perform the method as described in any one of claims 1 to 6.

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