A method, system, device and medium for determining an optimal oil level of a gear box lubricating oil

Abstract

The application provides a kind of gear box lubricating oil optimal oil level determination method, system, equipment and medium, belong to transmission technical field, the method steps are as follows: according to the life cycle of each support bearing in gear box has been used mileage and the life cycle of gear box determines the importance index of each support shaft; Determine the maximum allowable temperature index of each support bearing in gear box; According to the importance index and the maximum allowable temperature index of each support bearing in gear box, a gear box bearing temperature severity calculation model is established; The characteristics of the temperature of each support bearing in gear box changing with oil level are obtained, and the gear box bearing temperature severity under each oil level is calculated according to the gear box bearing temperature severity calculation model; The oil level with the lowest gear box bearing temperature severity is selected as the optimal oil level of the gear box. The application can quantitatively and objectively characterize the cooling effect of lubricating oil on bearings in gear box, providing a basis for determining the oil level of gear box lubricating oil.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of transmission, and particularly relates to a method, system, device and medium for determining the optimal oil level of lubricating oil in a gear box. BACKGROUND

[0002] In addition to the lubricating function, another important function of the lubricating oil in the gear box is cooling. In the use process, the lubricating oil is splashed to the surface of the key components such as bearings by the agitation of the gear, absorbs the heat of the key components such as bearings, and then falls into the oil pool, and then the heat is dissipated through heat exchange with the gear box shell or the oil-water heat exchanger. Relevant research shows that the oil level height of the lubricating oil in the gear box is a key factor affecting the cooling effect of the key components such as bearings. On the one hand, the oil level height of the gear box affects the amount of lubricating oil splashed to the key components such as bearings that need to be cooled, the higher the oil level, the more the oil, and the better the cooling effect; on the other hand, the oil level height of the lubricating oil in the gear box affects the oil stirring loss generated by the gear agitation, the higher the oil level, the greater the loss, and the higher the oil temperature, and the worse the cooling effect on the key components such as bearings that need to be cooled. In addition, due to the different gear rotation methods and bearing oil receiving and guiding structures, the cooling flow received by the bearings at different positions is also different. Therefore, how to determine the appropriate oil level height of the lubricating oil in the gear box is a difficult problem faced by the design of the reduction box.

[0003] At present, the determination of the oil level of the lubricating oil in the gear box in similar products is determined by the experience oil level and the immersion of key bearing rollers, and there is no quantitative determination method. The patent with the publication number CN113091846A provides a detection method for the optimal oil quantity of an electric drive system, determines the oil level of the reduction box based on the traditional efficiency optimization, adjusts the oiling quantity of the electric drive system to make the oil level of the reduction box consistent with the oil level of the reduction box when the electric drive system is in working state, and then determines the oiling quantity of the electric drive system. The patent with the publication number CN111688472A provides a lubricating oil quantity determination method for an oil-cooled electric drive integrated system, which determines the lubricating oil quantity by comprehensively considering the matching conditions of cooling, lubrication and efficiency optimization, wherein the required oil quantity is determined according to the lubrication conditions of the reduction box, including the oil quantity required for the lubrication of the whole vehicle reduction box and the lubricating oil quantity required for meeting the active lubrication. The two lubricating oil quantity determination methods provide a reference for the determination of the lubricating oil quantity of the oil-cooled electric drive system, but do not provide a specific determination method for the required lubricating oil of the reduction box.

[0004] Therefore, in view of the above defects in the prior art, it is necessary to provide a method, system, device and medium for determining the optimal oil level of lubricating oil in a gear box. SUMMARY

[0005] The lubricating oil of the gear box in the prior art has a cooling effect in addition to a lubricating effect, and determining the oil level height of the lubricating oil in the gear box is the key to ensuring the cooling effect and is a design problem of the reduction gearbox. Currently, there is no specific method for determining the oil level of the lubricating oil of the reduction gearbox. The present application provides a method, system, device and medium for determining the optimal oil level of the lubricating oil of the gear box to solve the above technical problems.

[0006] In a first aspect, the present application provides a method for determining the optimal oil level of the lubricating oil of a gear box, comprising the following steps:

[0007] S1. Determine the importance index of each support bearing in the gear box according to the life cycle used mileage of each support bearing in the gear box and the life cycle of the gear box;

[0008] S2. Determine the maximum working allowable temperature index of each support bearing in the gear box according to the heat treatment process used in the production of the support bearing;

[0009] S3. Establish a gear box bearing temperature severity calculation model according to the importance index and the maximum working allowable temperature index of each support bearing in the gear box;

[0010] S4. Obtain the characteristics of the temperature of each support bearing in the gear box varying with the oil level, and calculate the gear box bearing temperature severity at each oil level according to the gear box bearing temperature severity calculation model;

[0011] S5. Select the oil level with the lowest gear box bearing temperature severity as the optimal oil level of the gear box.

[0012] Further, the specific steps of step S1 are as follows:

[0013] S11. Obtain the life cycle L of the gear box and the life cycle used mileage l i of each support bearing in the gear box;

[0014] S12. Use the ratio of the life cycle used mileage l i of the support bearing to the life cycle L of the gear box as the importance index of the support bearing :

[0015] ;

[0016] Where i represents the i-th support bearing in the gear box. The temperature of the bearing at different positions varies with the oil level, and the weighted average is used to consider the temperature of each bearing comprehensively. Different bearings have different importance degrees, and the importance index realizes different weights for different bearings.

[0017] Further, the specific steps of step S2 are as follows:

[0018] S21. Obtain the tempering temperature T of the raceways of each support bearing in the gearbox. Hi ;

[0019] S22. Determine the temperature tolerance constant α of the support bearing in the gearbox;

[0020] S23. Set the maximum allowable operating temperature of each support bearing in the gearbox. This can be expressed by the following formula:

[0021] ;

[0022] Here, i refers to the i-th supporting bearing in the gearbox. Different bearings have different allowable temperatures and different degrees of temperature tolerance. Bearings with higher temperature tolerance are given lower weight when calculating the bearing temperature severity.

[0023] Furthermore, the specific steps of step S3 are as follows:

[0024] S31. Characterizes the real-time temperature t of each support bearing in the gearbox. i ;

[0025] S32. Based on the importance indicators of each supporting bearing in the gearbox and maximum allowable operating temperature index Constructing a real-time temperature t to support the bearing i The input model for calculating the temperature severity of the gearbox support bearing is as follows:

[0026] ;

[0027] in, This indicates the severity of temperature conditions in the gearbox bearings. This indicates the importance index of the i-th support bearing in the gearbox. This represents the maximum allowable operating temperature of the i-th support bearing in the gearbox. This represents the temperature of the i-th support bearing in the gearbox, where n represents the number of support bearings in the gearbox. Different support bearings have different operating mileages; those with longer operating mileages are more important and are given higher weight when calculating the severity of their condition. Support bearing temperature is chosen as an indicator for determining the optimal oil level. Compared to lubricating oil temperature and gear temperature, bearing temperature is greatly affected by oil level; therefore, selecting an appropriate indicator ensures bearing reliability.

[0028] Furthermore, the specific steps of step S4 are as follows:

[0029] S41. Obtain the characteristics of temperature change of each support bearing in the gearbox with oil level through simulation calculation or experimental testing, and obtain the support bearing temperature at different oil levels;

[0030] S42. Take the temperature of the support bearing at different oil levels as the real-time temperature t of the support bearing i

[0031] Further, the specific steps of acquiring the characteristics of the temperature of each support bearing in the gearbox changing with the oil level by using the test method in step S41 are as follows:

[0032] S411. Set a temperature sensor at the position of the support bearing of the gearbox;

[0033] S412. Determine the test oil level height of the lubricating oil in the gearbox;

[0034] S413. Start the test by operating the gearbox at each test oil level, and collect the equilibrium value of the temperature of each support bearing;

[0035] S414. Construct a support bearing temperature-oil level table, and characterize the temperature equilibrium value of each support bearing at each test oil level.

[0036] Further, the specific steps of step S5 are as follows:

[0037] S51. Sort the gearbox bearing temperature severity at each oil level, and select the lowest gearbox bearing temperature severity;

[0038] S52. Take the oil level with the lowest gearbox bearing temperature severity as the optimal oil level;

[0039] S53. Control the lubricating oil in the gearbox to operate according to the optimal oil level. Selecting the oil level with the lowest severity as the optimal oil level of the gearbox realizes the quantitative selection of the oil level of the gearbox, and the lowest bearing temperature is taken as the index, which best represents the lubrication performance.

[0040] In a second aspect, the present application provides a system for determining the optimal oil level of the lubricating oil of a gearbox, comprising:

[0041] A support bearing weight determination module is configured to determine the importance index of each support bearing in the gearbox according to the life cycle used mileage and the life cycle of the gearbox;

[0042] A support bearing maximum temperature determination module is configured to determine the maximum allowable working temperature index of each support bearing in the gearbox according to the heat treatment process adopted in the production of the support bearing;

[0043] A temperature severity model establishment module is configured to establish a gearbox bearing temperature severity calculation model according to the importance index and the maximum allowable working temperature index of each support bearing in the gearbox; ​

[0044] The temperature severity calculation module is configured to acquire characteristics of temperatures of each support bearing in the gearbox varying with oil levels, and calculate the temperature severity of the gearbox bearing at each oil level according to a gearbox bearing temperature severity calculation model.

[0045] The optimal oil level determination module is configured to select an oil level with the lowest temperature severity of the gearbox bearing as the optimal oil level of the gearbox.

[0046] In a third aspect, the present application provides an apparatus comprising a processor and a memory;

[0047] The memory is configured to store a computer program, and the processor is configured to call and run the computer program from the memory, so that the electronic apparatus executes the method of the first aspect.

[0048] In a fourth aspect, the present application provides a storage medium,

[0049] The storage medium has instructions stored therein, which, when executed on a computer, cause the computer to execute the method of the first aspect.

[0050] The present application has the following beneficial effects:

[0051] The optimal oil level determination method, system, apparatus and medium for the gearbox lubricating oil provided by the present application select the temperature of the support bearing most affected by the oil level as an index, comprehensively consider the importance of the bearing, the allowable temperature of the bearing, and the like to realize the calculation model of the temperature severity of the gearbox bearing. The longer the service life of the bearing, the greater the influence on the severity of the bearing. The greater the maximum working temperature of the bearing, the smaller the influence on the severity of the bearing. Finally, the oil level with the smallest temperature severity of the bearing is selected as the optimal oil level of the gearbox. It can be seen that the method is simple to implement, the principle is reliable, and the determination of the optimal oil level of the gearbox can be quantitatively and objectively realized.

[0052] In addition, the present application has reliable design principles, simple structure, and very wide application prospects.

[0053] Therefore, compared with the prior art, the present application has outstanding substantial characteristics and significant progress, and the beneficial effects of its implementation are also obvious. BRIEF DESCRIPTION OF DRAWINGS

[0054] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, for those skilled in the art, other drawings can also be obtained based on these drawings without any creative effort.

[0055] Figure 1is a flowchart of an embodiment of the method for determining the optimal oil level of the gear box lubricating oil.

[0056] Figure 2 is a schematic diagram of the system for determining the optimal oil level of the gear box lubricating oil. DETAILED DESCRIPTION

[0057] The method for determining the optimal oil level of the gear box lubricating oil can be applied to one or more devices, which are devices capable of automatically performing numerical calculation and / or information processing according to pre-set or stored instructions, and the hardware thereof includes but is not limited to microprocessors, application specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), digital signal processors (DSPs), embedded devices, etc.

[0058] The device can be any electronic product capable of human-computer interaction with a user, such as a personal computer, a tablet computer, a smart phone, a personal digital assistant (PDA), an interactive Internet protocol television (IPTV), etc. The network in which the device is located includes but is not limited to the Internet, a wide area network, a metropolitan area network, a local area network, a virtual private network (VPN), etc.

[0059] 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, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work should fall within the protection scope of the present application.

[0060] Please refer to Figure 1 Fig. 1 shows a method for determining the optimal oil level of the gear box lubricating oil, which includes the following steps:

[0061] S1. Determine the importance index of each support shaft in the gear box according to the life cycle used mileage of each support bearing in the gear box and the life cycle of the gear box;

[0062] S2. Determine the maximum working allowable temperature index of each support bearing in the gear box according to the heat treatment process adopted in the production of the support bearing;

[0063] S3. Establish a temperature severity calculation model of the bearings in the gearbox according to the importance index and the maximum allowable temperature index of each bearing in the gearbox;

[0064] S4. Obtain the temperature characteristics of each bearing in the gearbox with respect to the oil level, and calculate the temperature severity of each bearing in the gearbox at each oil level according to the temperature severity calculation model of the bearings in the gearbox;

[0065] S5. Select the oil level with the lowest temperature severity of the bearings in the gearbox as the optimal oil level of the gearbox.

[0066] In this embodiment, the specific steps of step S1 are as follows:

[0067] S11. Obtain the life cycle L of the gearbox, and the life cycle used mileage l i of each bearing in the gearbox;

[0068] S12. Use the ratio of the life cycle used mileage l i of each bearing to the life cycle L of the gearbox as the importance index of each bearing :

[0069] ;

[0070] Wherein, i refers to the i th bearing in the gearbox;

[0071] It should be noted that the importance index refers to the weight of each bearing in the temperature severity evaluation;

[0072] The specific steps of step S2 are as follows:

[0073] S21. Obtain the tempering temperature T Hi of the ring of each bearing in the gearbox;

[0074] S22. Determine the temperature tolerance constant of each bearing in the gearbox ;

[0075] S23. Set the maximum allowable temperature index of each bearing in the gearbox , which is represented by the following formula:

[0076] ;

[0077] Wherein, i refers to the i th bearing in the gearbox, usually 50;

[0078] The specific steps of step S3 are as follows:

[0079] S31. Characterize the real-time temperature t i of each bearing in the gearbox;

[0080] S32. The importance index of each support bearing in the gearbox and the maximum index of working allowable temperature The real-time temperature t of the support bearing is constructed as an input i The support bearing temperature severity calculation model of the gearbox:

[0081] ;

[0082] wherein, represents the support bearing temperature severity of the gearbox, represents the importance index of the i-th support bearing in the gearbox, represents the maximum value of the working temperature allowable of the i-th support bearing in the gearbox, represents the temperature of the i-th support bearing in the gearbox, and n represents the number of support bearings in the gearbox;

[0083] It should be noted that the support bearing temperature severity calculation model of the gearbox is based on the importance degree and the maximum value of the working allowable temperature of each support bearing, and the weighted average value of the temperature of each support bearing in the gearbox is calculated, and the oil level that makes the temperature average value minimum is selected as the best oil level;

[0084] For example, taking a gearbox with a life cycle of 1.5 million kilometers and 6 support bearings as an example, according to the load spectrum of the gearbox, the life cycle mileage of each bearing is shown in Table 1:

[0085] Table 1

[0086] Bearing 1 2 3 4 5 6 Mileage / km 130 130 150 150 30 30

[0087] It should be noted that the gearbox is a double-motor input gearbox, and when one of the motors is not working, part of the support bearings are also not working, so the life cycle mileage of different support bearings is different;

[0088] The importance index of each support bearing is calculated as shown in Table 2:

[0089] Table 2

[0090] Bearing 1 2 3 4 5 6 Importance indicator 13 / 15 13 / 15 1 1 1 / 5 1 / 5

[0091] The maximum value of the working temperature allowable of each support bearing in the gearbox is determined according to the heat treatment process of the support bearing;

[0092] The tempering temperature of the bearing ring of the six support bearings of the gearbox is shown in Table 3:

[0093] Table 3

[0094] Bearing 1 2 3 4 5 6 Tempering temperature / °C 300 300 350 350 300 300

[0095] Temperature tolerance constant When 50 is taken, the working allowable temperature maximum value index of each support bearing in the gear box is used The working temperature allowable maximum value of the six bearings is calculated as shown in Table 4:

[0096] Table 4

[0097] Bearing 1 2 3 4 5 6 Maximum operating temperature / °C 250 250 300 300 250 250

[0098] The importance index of each support bearing in the gear box determined in step S1 and the working allowable temperature maximum value determined in step S2 are substituted into the gear box bearing temperature severity calculation model , and the specific gear box bearing temperature severity calculation model is:

[0099]

[0100] Where t1, t2, t3, t4, t5, t6 represent the real-time temperatures of the six support bearings, respectively;

[0101] The specific steps of step S4 are as follows:

[0102] S41. Obtain the temperature characteristics of each support bearing in the gear box with respect to oil level change through simulation calculation or test test method, and obtain the support bearing temperature under different oil levels; The specific steps of obtaining the temperature characteristics of each support bearing in the gear box with respect to oil level change in step S41 are as follows:

[0103] S411. Set temperature sensors at the support bearing parts of the gear box;

[0104] S412. Determine the test oil level height of the lubricating oil in the gear box;

[0105] S413. Start the test by operating the gear box at each test oil level height, and collect the equilibrium value of the temperature of each support bearing;

[0106] S414. Build a support bearing temperature-oil level table to characterize the temperature equilibrium value of each support bearing at each test oil level;

[0107] It should be noted that the temperature sensors are set at the bearing parts of the gear box, the oil level height is adjusted, and then the gear box is operated to collect the equilibrium value of the temperature of each support bearing as shown in Table 5:

[0108] Table 5

[0109] Bearing 1 2 3 4 5 6 Oil level 1 equilibrium temperature / °C 79 80 80 82 80 75 Oil level 2 equilibrium temperature / °C 78 77 80 82 79 76 Oil level 3 equilibrium temperature / °C 77 74 80 82 79 77 Oil level 4 equilibrium temperature / °C 76 77 80 82 80 78

[0110] S42. Take the support bearing temperature under different oil levels as the real-time temperature ti Input the gearbox bearing temperature severity calculation model to calculate the gearbox bearing temperature severity at each oil level;

[0111] The calculated severity of gearbox bearing temperature at each oil level is shown in Table 6.

[0112] Oil level Severity Oil level 1 1.215 Oil level 2 1.201 Oil level 3 1.188 Oil level 4 1.197

[0113] The specific steps of step S5 are as follows:

[0114] S51. Sort the gearbox bearing temperature severity at each oil level and select the gearbox bearing with the lowest temperature severity.

[0115] S52. The oil level at which the gearbox bearing temperature is least severe is taken as the optimal oil level;

[0116] S53. Control the lubricating oil in the gearbox to operate at the optimal oil level;

[0117] By comparing Table 6, it can be seen that the gearbox bearing temperature is the least severe at oil level 3, so oil level 3 is the optimal oil level for this gearbox.

[0118] It should be understood that the sequence number of each step in the above embodiments does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0119] The following are embodiments of the optimal oil level determination system for gearbox lubricating oil provided in this disclosure. This device and the optimal oil level determination method for gearbox lubricating oil in the above embodiments belong to the same inventive concept. For details not described in detail in the embodiments of the optimal oil level determination system for gearbox lubricating oil, please refer to the embodiments of the optimal oil level determination method for gearbox lubricating oil described above.

[0120] like Figure 2 As shown, the system includes:

[0121] The support bearing weight determination module is used to determine the importance index of each support shaft based on the life cycle and mileage of each support bearing in the gearbox and the life cycle of the gearbox.

[0122] The maximum temperature determination module for support bearings is used to determine the maximum allowable operating temperature of each support bearing in the gearbox based on the heat treatment process used in the production of support bearings.

[0123] The temperature severity model building module is used to establish a calculation model for the temperature severity of gearbox bearings based on the importance indicators and the maximum allowable operating temperature of each support bearing in the gearbox.

[0124] The temperature severity calculation module is configured to acquire the temperature characteristics of each support bearing in the gearbox varying with the oil level, and calculate the temperature severity of the gearbox bearing under each oil level according to a gearbox bearing temperature severity calculation model.

[0125] The optimal oil level determination module is configured to select the oil level with the lowest temperature severity of the gearbox bearing as the optimal oil level of the gearbox.

[0126] The optimal oil level determination method of the gearbox lubricating oil provided by the present application is described in combination with the modules and algorithm steps of each example disclosed in the present application, and can be realized by electronic hardware, computer software or a combination of both. In order to clearly illustrate the interchangeability of hardware and software, the components and steps of each example have been generally described in the above description according to function. Whether the functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. A person skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0127] Those skilled in the art can understand that the optimal oil level determination method of the gearbox lubricating oil provided by the present application can be realized as a system, a method or a program product. Therefore, each aspect of the present disclosure can be embodied as a complete hardware embodiment, a complete software embodiment (including firmware, microcode, etc.), or an embodiment combining hardware and software aspects, which can be collectively referred to as "circuitry", "module" or "system" herein.

[0128] In a non-transitory computer-readable storage medium storing the optimal oil level determination method of the gearbox lubricating oil, it can be, but is not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or apparatus, or any combination of the above. More specific examples (non-exhaustive list) of readable storage media include an electrical connection having one or more wires, a portable disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above.

[0129] Although the present application has been described in detail by referring to the preferred embodiments thereof, it is to be understood that the present application is not limited to the preferred embodiments. Various equivalent modifications and changes can be made to the embodiments of the present application by those skilled in the art without departing from the spirit and scope of the present application. Any modifications and changes made to the embodiments of the present application within the technical scope disclosed by the present application should be covered by the protection scope of the present application.

Claims

1. A method of determining an optimum oil level of a gear box lubricating oil, characterized by, Comprising the following steps: S1. Determine the importance index of each support shaft in the gearbox according to the life cycle used mileage of each support bearing in the gearbox and the gearbox life cycle; S2. Determine the maximum working allowable temperature index of each support bearing in the gearbox according to the heat treatment process adopted in the production of the support bearing; S3. Establish a gearbox bearing temperature severity calculation model according to the importance index and the maximum working allowable temperature index of each support bearing in the gearbox; S4. Obtain the characteristics of the temperature of each support bearing in the gearbox with the oil level, and calculate the gearbox bearing temperature severity at each oil level according to the gearbox bearing temperature severity calculation model; S5. Screen out the oil level with the lowest gearbox bearing temperature severity as the best oil level of the gearbox; Step S3 comprises the following steps: S31. Characterize the real-time temperature ti of each support bearing in the gearbox; S32. Based on the importance index of each support bearing in the gearbox and the maximum index of working allowable temperature Construct a gearbox support bearing temperature severity calculation model with the real-time temperature ti of the support bearing as input: ； wherein, represents the severity of the temperature of the gearbox bearing, represents the importance index of the i-th support bearing in the gearbox, represents the maximum allowable working temperature of the i-th support bearing in the gearbox, represents the temperature of the i-th support bearing in the gearbox, and n represents the number of support bearings in the gearbox.

2. The method of determining the optimum oil level of a gear box lubricating oil according to claim 1, wherein Step S1 comprises the following steps: S11. Obtain the gearbox life cycle L and the life cycle used mileage li of each support bearing in the gearbox; S12. The ratio of the life cycle used mileage li of the support bearing to the life cycle L of the gear box is used as an indicator of the importance of the support bearing : ； Wherein, i refers to the i th support bearing in the gearbox.

3. The method for determining the optimal oil level of gearbox lubricating oil as described in claim 1, characterized in that, Step S2 comprises the following steps: S21. Obtain the tempering temperature THi of the ring of each support bearing in the gearbox; S22. Determine the temperature tolerance constant a of the support bearing in the gearbox; S23. Set a maximum allowable temperature index of each support bearing in the gear box This is expressed by the following equation: ； Wherein, i refers to the i th support bearing in the gearbox.

4. The method of claim 1, wherein Step S4 comprises the following steps: S41. Obtain the characteristics of the temperature of each support bearing in the gearbox with the oil level by simulation calculation or test test method, and obtain the support bearing temperature under different oil levels; S42. Input the support bearing temperature under different oil levels as the real-time temperature ti of the support bearing into the gearbox bearing temperature severity calculation model to calculate the gearbox bearing temperature severity at each oil level.

5. The method for determining the optimal oil level of gearbox lubricating oil as described in claim 4, characterized in that, The specific steps of adopting the test test method to obtain the characteristics of the temperature of each support bearing in the gearbox with the oil level in step S41 are as follows: S411. Set temperature sensors at the support bearing parts of the gearbox; S412. Determine the test oil level height of the lubricating oil in the gearbox; S413. Run the gearbox at each test oil level height to start the test and collect the equilibrium value of the temperature of each support bearing; S414. Build a support bearing temperature-oil level table to characterize the temperature equilibrium value of each support bearing at each test oil level.

6. The method for determining the optimal oil level of gearbox lubricating oil as described in claim 4, characterized in that, Step S5 comprises the following steps: S51. Sort the gearbox bearing temperature severity at each oil level, and screen out the lowest gearbox bearing temperature severity; S52. Take the oil level with the lowest gearbox bearing temperature severity as the best oil level; S53. Control the lubricating oil in the gearbox to run according to the best oil level.

7. A system for determining an optimum oil level of a gear box lubricating oil, characterized by Comprise: A support bearing weight determination module for determining the importance index of each support shaft in the gearbox according to the life cycle used mileage of each support bearing in the gearbox and the gearbox life cycle; A support bearing maximum temperature determination module for determining the maximum working allowable temperature index of each support bearing in the gearbox according to the heat treatment process adopted in the production of the support bearing; The temperature severity model establishing module is configured to establish a gear box bearing temperature severity calculation model according to the importance index and the maximum allowable temperature index of each support bearing in the gear box. The temperature severity calculation module is configured to acquire the temperature characteristics of each support bearing in the gear box with respect to the oil level, and calculate the gear box bearing temperature severity under each oil level according to the gear box bearing temperature severity calculation model. The optimal oil level determination module is configured to select the oil level with the lowest gear box bearing temperature severity as the optimal oil level of the gear box. The temperature severity model establishing module comprises: The real-time temperature ti of each support bearing in the gear box; based on an importance index of each support bearing in the gearbox and a maximum allowable temperature index of the work a model for calculating the temperature severity of the support bearing of the gearbox is constructed with the real-time temperature ti of the support bearing as input ； wherein, represents the severity of the temperature of the gearbox bearing, represents the importance index of the i-th support bearing in the gearbox, represents the maximum allowable working temperature of the i-th support bearing in the gearbox, represents the temperature of the i-th support bearing in the gearbox, and n represents the number of support bearings in the gearbox.

8. An apparatus, comprising: The electronic device comprises a processor and a memory; The memory is configured to store a computer program, and the processor is configured to call and run the computer program from the memory, so that the electronic device executes the method of any one of claims 1-6.

9. A storage medium, characterized in that, The storage medium stores instructions that, when executed on a computer, cause the computer to execute the method of any one of claims 1-6.

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