Gearbox lubricating oil accelerated life test load determination method and system
By constructing a lubricant oil characteristic change model, the acceleration life test load of gearbox lubricant is determined, which solves the problem of low load determination accuracy in the prior art and achieves more efficient lubricant life test.
Patent Information
- Application Number
- CN202411043608.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-31
- Publication Date
- 2024-12-10
AI Technical Summary
In the prior art, the determination of the acceleration life test load of gearbox lubricant mainly depends on empirical methods, which affects the test accuracy. Especially under the long oil change cycle, it is difficult to effectively determine the service life of lubricant.
By constructing a relationship model between the change in lubricant characteristics and gearbox load and running time, the acceleration life test load, including the additive content, viscosity and acid value change model, combined with the maximum load of the test bench, the minimum acceleration life test time is calculated. and load.
It improves the accuracy of the lubricant accelerated life test, can more accurately determine the service life of the lubricant, reduces the test time and improves the test efficiency.
Smart Images
Figure CN119106530A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of gearbox lubricating oil life test, and in particular to a gearbox lubricating oil accelerated life test load determination method and system. Background Art
[0002] Lubricating oil is a key factor in ensuring the safe and stable operation of drive systems such as gearboxes. Lubricating oil will deteriorate as the gearbox operates. When the lubricating oil cannot meet the operating requirements of the gearbox, it will cause abnormal wear of the gearbox. Therefore, it is necessary to determine the expected service life of the gearbox lubricating oil to provide guidance for the scheduled replacement of the lubricating oil during use.
[0003] At present, the replacement of lubricating oil in drive systems such as gearboxes is mainly determined based on empirical methods and driving tests. In recent years, with the development of the demand for long oil change and maintenance-free, the oil change cycle of vehicle gearboxes, especially commercial vehicle gearboxes, has become longer and longer. The longest oil change cycle has now exceeded 1 million kilometers / 20,000 hours. It has become increasingly difficult to determine the service life of gearbox lubricating oil by driving tests. Therefore, using a bench to conduct accelerated life tests on lubricating oils and improve the efficiency of lubricating oil service life tests has become a form of testing the service life of lubricating oils. However, the load of the accelerated life test of lubricating oils is generally determined based on experience, which affects the test accuracy. Summary of the invention
[0004] To solve the above problems, the present invention provides a method and system for determining the accelerated life test load of gearbox lubricating oil, which determines the accelerated life test load based on the characteristic changes of the lubricating oil, uses the determined load to perform the accelerated life test, and improves the accuracy of the accelerated life test of the lubricating oil.
[0005] In a first aspect, the technical solution of the present invention provides a method for determining a load in a gearbox lubricating oil accelerated life test, comprising the following steps: The lubricating oil is tested, and a relationship model between the lubricating oil characteristic change and the gearbox load and running time is constructed based on the test results, which is recorded as the lubricating oil characteristic change model; Configure the target load and target run time, and obtain the maximum load of the test bench; The target load, target operating time and maximum load are processed using the lubricant property change model to obtain the shortest time for the accelerated life test; The target load, target operating time and minimum time of the accelerated life test are processed using the lubricant property change model to obtain the accelerated life test load.
[0006] In an optional embodiment, a direct relationship model between the change in lubricating oil characteristics and the gearbox load and operating time is constructed based on the test results, specifically including: A relationship model between the lubricant additive content and the gearbox torque and operating time is constructed, which is denoted as the additive content variation model and is expressed by the following formula (1): (1) In the formula, Indicates the consumption of additives, Indicates the gearbox operating torque, Indicates the gearbox running time, Indicates the coefficient of variation of additive content.
[0007] In an optional embodiment, a direct relationship model between the change in lubricating oil characteristics and the gearbox load and operating time is constructed based on the test results, which specifically includes: The relationship model between lubricating oil viscosity and gearbox speed and running time is constructed, which is recorded as the viscosity percentage change model and is expressed by the following formula (2): (2) In the formula, Indicates the percentage of viscosity reduction, Indicates the gearbox operating speed. Indicates the coefficient of variation of viscosity.
[0008] In an optional embodiment, a direct relationship model between the change in lubricating oil characteristics and the gearbox load and operating time is constructed based on the test results, which specifically includes: The relationship model between the lubricating oil acid value and the gearbox temperature and operating time is constructed, which is denoted as the acid value change model and is expressed by the following formula (3): (3) In the formula, Indicates the change in acid value, Indicates the gearbox operating temperature, Indicates the coefficient of variation of acid value.
[0009] In an optional embodiment, the gearbox operating torque, rotation speed and temperature are respectively the gearbox operating average torque, average rotation speed and average temperature.
[0010] In an optional embodiment, the target load, target operating time and maximum load are processed using a lubricant property change model to obtain the shortest time for the accelerated life test, specifically including: Using formula (1) to process the target average torque, target operating time and maximum torque, the following formula (4) is obtained: (4) In the formula, represents the target average torque, represents the target running time, Indicates the maximum torque, Indicates the maximum torque accelerated life test time; Calculate formula (4) to obtain the maximum torque accelerated life test time; Using formula (2) to process the target average speed, target operating time and maximum speed, we obtain the following formula (5): (5) In the formula, represents the target average speed, represents the target running time, Indicates the maximum speed, Indicates the maximum speed accelerated life test time; Calculate formula (5) to obtain the maximum speed accelerated life test time; Using formula (3) to process the target average temperature, target operating time and maximum temperature, we obtain the following formula (6): (6) In the formula, represents the target average temperature, represents the target running time, Indicates the maximum temperature, Indicates the maximum temperature accelerated life test time; Calculate formula (6) to obtain the maximum temperature accelerated life test time; The minimum time of the accelerated life test is calculated by the following formula (7): (7) In the formula, Indicates the minimum time for accelerated life test.
[0011] In an optional embodiment, the target load, target operating time and the minimum time of the accelerated life test are processed using the lubricant property change model to obtain the accelerated life test load, specifically including: Using formula (1) to process the target average torque, target operating time and the minimum time of the accelerated life test, the following formula (8) is obtained: (8) In the formula, Indicates the accelerated life test torque; The accelerated life test torque is obtained by calculating formula (8).
[0012] In an optional embodiment, the target load, the target operating time and the minimum time of the accelerated life test are processed using the lubricant property change model to obtain the accelerated life test load, which specifically includes: Using formula (2) to process the target average speed, target operating time and the minimum time of the accelerated life test, the following formula (9) is obtained: (9) In the formula, Indicates the speed of accelerated life test; The accelerated life test speed is obtained by calculating formula (9).
[0013] In an optional embodiment, the target load, the target operating time and the minimum time of the accelerated life test are processed using the lubricant property change model to obtain the accelerated life test load, which specifically includes: Formula (3) is used to process the target average temperature, target operating time and the minimum time of the accelerated life test to obtain the following formula (10): (10) In the formula, Indicates the accelerated life test temperature; The accelerated life test temperature is obtained by calculating formula (10).
[0014] In a second aspect, the technical solution of the present invention provides a gearbox lubricant oil accelerated life test load determination system, comprising: Lubricant oil characteristic change model construction module: Test the lubricant oil, and construct a relationship model between the lubricant oil characteristic change and the gearbox load and running time based on the test results, which is recorded as the lubricant oil characteristic change model; Parameter configuration module: configure the target load and target running time, and obtain the maximum load of the test bench; The module for obtaining the shortest time of accelerated life test: uses the lubricant characteristic change model to process the target load, target operating time and maximum load to obtain the shortest time of accelerated life test; Accelerated life test load acquisition module: Use the lubricant characteristic change model to process the target load, target operating time and the minimum time of the accelerated life test to obtain the accelerated life test load.
[0015] The invention provides a method and system for determining the load of a gearbox lubricant accelerated life test, which has the following beneficial effects compared with the prior art: firstly, the lubricant is tested to construct a lubricant characteristic change model, and then based on the model, the accelerated life test load is determined according to the configured test parameters. The invention determines the accelerated life test load based on the characteristic change of the lubricant, uses the determined load to perform the accelerated life test, and improves the accuracy of the lubricant accelerated life test. BRIEF DESCRIPTION OF THE DRAWINGS In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0016] Figure 1 The present invention provides a flow chart of a method for determining a load in an accelerated life test of a gearbox lubricating oil.
[0017] Figure 2 The present invention provides a schematic block diagram of a gearbox lubricant oil accelerated life test load determination system. DETAILED DESCRIPTION
[0018] In order to enable those skilled in the art to better understand the scheme of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.
[0020] Figure 1 This is a schematic flow chart of a method for determining a load in a gearbox lubricant accelerated life test provided by an embodiment of the present invention. Figure 1 The execution subject may be a gearbox lubricant oil accelerated life test load determination system. The gearbox lubricant oil accelerated life test load determination method provided in the embodiment of the present invention is executed by a computer device, and accordingly, the gearbox lubricant oil accelerated life test load determination system runs in the computer device. According to different requirements, the order of the steps in the flowchart can be changed, and some can be omitted.
[0021] like Figure 1 As shown, the method includes the following steps.
[0022] S1, test the lubricating oil, and build a relationship model between the lubricating oil characteristic change and the gearbox load and running time based on the test results, which is recorded as the lubricating oil characteristic change model.
[0023] The test shows that lubricant oxidation, shearing and additive consumption are the main factors leading to lubricant failure. The corresponding indicators are acid value change, viscosity reduction and additive content consumption, which better characterize the deterioration of lubricants. The test shows that the torque of the gearbox is the most important factor affecting the consumption of lubricant additive content. The greater the torque, the more additives react to form a protective film, and the greater the consumption of additive content. The speed of the gearbox is the most important factor affecting the reduction of lubricant viscosity. The higher the speed, the more intense the shearing effect on the lubricant, and the faster the viscosity decreases. The operating temperature of the gearbox is the most important factor affecting the change of lubricant acid value. The higher the temperature, the greater the oxidation effect on the lubricant and the more acidic substances are formed.
[0024] Based on the above test, this embodiment selects additive content consumption, viscosity reduction and acid value change as life characterization indicators, and selects gearbox torque, speed and temperature as acceleration loads. The constructed lubricating oil characteristic change model includes additive content change model, viscosity percentage change model and acid value change model.
[0025] In the specific implementation process, the target gearbox lubricant oil additive content consumption, viscosity reduction and acid value change characteristics are generally obtained through experiments or simulations. They are obtained and constructed through multiple groups of experiments under different torque, speed and temperature conditions.
[0026] S1.1, construct the relationship model between the lubricant additive content and the gearbox torque and operating time, recorded as the additive content change model, which is expressed by the following formula (1): (1) In the formula, Indicates the consumption of additives, Indicates the gearbox operating torque, Indicates the gearbox running time, Indicates the coefficient of variation of additive content.
[0027] Exemplarily, lubricating oil additive content consumption characteristics are shown in Table 1 below.
[0028] Table 1: Lubricant additive content consumption characteristics Torque 5 0.1674 0.1586 0.1498 0.1410 0.1322 Torque 4 0.1697 0.1609 0.1521 0.1433 0.1345 Torque 3 0.1718 0.1630 0.1542 0.1454 0.1366 Torque 2 0.1738 0.1650 0.1562 0.1474 0.1386 Torque 1 0.1755 0.1667 0.1579 0.1491 0.1403 Run time 1 Run time 2 Run time 3 Run time 4 Run time 5 Based on the above test results, the additive content variation model can be obtained .
[0029] S1.2, construct the relationship model between lubricating oil viscosity and gearbox speed and running time, recorded as the viscosity percentage change model, which is expressed by the following formula (2): (2) In the formula, Indicates the percentage of viscosity reduction, Indicates the gearbox operating speed. Indicates the coefficient of variation of viscosity.
[0030] Exemplarily, the viscosity percentage change model can be obtained based on the test results: .
[0031] S1.3, construct the relationship model between the lubricating oil acid value and the gearbox temperature and running time, recorded as the acid value change model, which is expressed by the following formula (3): (3) In the formula, Indicates the change in acid value, Indicates the gearbox operating temperature, Indicates the coefficient of variation of acid value.
[0032] Exemplarily, the acid value change model can be obtained according to the test results .
[0033] S2, configure the target load and target running time, and obtain the maximum load of the test bench.
[0034] Generally, the expected service life information of the lubricant is determined based on the application model, scenario, working condition, etc. of the gearbox. The obtained expected service life information of the lubricant can be the running mileage information or the running time information. Specifically, the expected service life of the target gearbox lubricant in this embodiment adopts the running time information.
[0035] Generally, the operating torque, rotation speed and temperature information of the target gearbox are obtained by experiments or simulations. For example, the target operating torque, target rotation speed and target temperature information of the target gearbox are obtained by road driving tests.
[0036] The obtained usage torque, speed and temperature information may be usage ratio information including torque range, speed range and temperature range, or average torque, average speed and average temperature. Specifically, this embodiment uses average torque, average speed and average temperature as test parameters.
[0037] Generally, the maximum torque, maximum speed and maximum temperature information that can be run in the test are determined based on the capacity limitations of the test site and test bench.
[0038] S3, the target load, target operating time and maximum load are processed using the lubricant characteristic change model to obtain the shortest time for the accelerated life test.
[0039] This embodiment calculates the shortest time of the accelerated life test based on the lubricating oil characteristic change model and the test parameters configured in step S2, and specifically includes the following steps.
[0040] S3.1, use formula (1) to process the target average torque, target operating time and maximum torque to obtain the following formula (4), (4) In the formula, represents the target average torque, represents the target running time, Indicates the maximum torque, Indicates the maximum torque accelerated life test time.
[0041] The maximum torque accelerated life test time is obtained by calculating formula (4).
[0042] S3.2, use formula (2) to process the target average speed, target running time and maximum speed to obtain the following formula (5): (5) In the formula, represents the target average speed, represents the target running time, Indicates the maximum speed, Indicates the maximum speed accelerated life test time.
[0043] The maximum speed accelerated life test time is obtained by calculating formula (5).
[0044] S3.3, use formula (3) to process the target average temperature, target operating time and maximum temperature to obtain the following formula (6), (6) In the formula, represents the target average temperature, represents the target running time, Indicates the maximum temperature, Indicates the maximum temperature accelerated life test time.
[0045] The maximum temperature accelerated life test time is obtained by calculating formula (6).
[0046] S3.4, calculate the minimum time of accelerated life test by the following formula (7): (7) In the formula, Indicates the minimum time for accelerated life test.
[0047] For example, the target operating time is 10,000 hours, and the target load includes an average torque of 50 Nm, an average speed of 3,000 r / min, and an average temperature of 80° C. The maximum load includes a maximum torque of 800 Nm, a maximum speed of 6,000 r / min, and a maximum temperature of 120° C.
[0048] Step 1, calculate .
[0049] Step 2, calculate .
[0050] Step 3, calculate .
[0051] Step 4, calculate .
[0052] The final calculated accelerated life time based on the maximum torque, maximum speed and maximum temperature information allowed by the test is: Hour, Hour, Hour.
[0053] calculate The shortest time obtained in the accelerated life test of lubricating oil is 673.64 hours.
[0054] S4, using the lubricant characteristic change model to process the target load, target operating time and the minimum time of the accelerated life test to obtain the accelerated life test load.
[0055] This embodiment obtains the accelerated life test load according to the lubricating oil characteristic change model, the test parameters configured in step S2 and the accelerated life test shortest time calculated in step S3, and specifically includes the following steps.
[0056] S4.1, use formula (1) to process the target average torque, target operating time and the minimum time of the accelerated life test to obtain the following formula (8), (8) In the formula, Indicates the accelerated life test torque.
[0057] The accelerated life test torque is obtained by calculating formula (8).
[0058] S4.2, use formula (2) to process the target average speed, target operating time and the minimum time of the accelerated life test to obtain the following formula (9): (9) In the formula, Indicates the accelerated life test speed.
[0059] The accelerated life test speed is obtained by calculating formula (9).
[0060] S4.3, use formula (3) to process the target average temperature, target operating time and the minimum time of the accelerated life test to obtain the following formula (10), (10) In the formula, Indicates the accelerated life test temperature.
[0061] The accelerated life test temperature is obtained by calculating formula (10).
[0062] Exemplarily, the target operating time is 10,000 hours, the target loads include an average torque of 50 Nm, an average speed of 3,000 r / min, and an average temperature of 80° C. The shortest time for the accelerated life test is 673.64 hours.
[0063] Step 1, calculate .
[0064] Step 2, calculate .
[0065] Step 3, calculate .
[0066] The torque, speed and temperature of the target gearbox lubricant life acceleration test are calculated as follows: , , .
[0067] This embodiment selects gearbox torque, speed and temperature as the accelerated load of lubricant life, realizes the conversion between the use load and the accelerated test load based on the established lubricant characteristic change model, and determines the shortest acceleration time based on the maximum acceleration load information allowed by the test, and then determines the remaining accelerated test loads. That is, the test torque of the target gearbox lubricant life accelerated test is calculated. Nm, speed r / min, temperature ℃ The test of 10 hours can represent the expected service life of the target gearbox at an average torque of 50Nm, an average speed of 3000r / min and an average temperature of 80℃ for 10,000 hours.
[0068] This embodiment selects additive content, lubricant oil viscosity and lubricant oil acid value as degradation indicators based on the degradation principle of lubricant oil, and establishes the relationship between the degradation indicator and the gearbox speed, torque and temperature based on the degradation principle of degradation indicators. Finally, based on the principle of equivalent damage conversion, the lubricant oil life test can be accelerated by increasing the test load, thereby reducing the life test time, realizing rapid verification of the gearbox lubricant oil life, and improving the verification accuracy.
[0069] An embodiment of a method for determining the accelerated life test load of a gearbox lubricant oil is described in detail above. Based on the method for determining the accelerated life test load of a gearbox lubricant oil described in the above embodiment, an embodiment of the present invention also provides a gearbox lubricant oil accelerated life test load determination system corresponding to the method.
[0070] Figure 2 The present invention provides a schematic block diagram of a gearbox lubricant accelerated life test load determination system. In this embodiment, the gearbox lubricant accelerated life test load determination system can be divided into multiple functional modules according to the functions it performs. The module referred to in the present invention refers to a series of computer program segments that can be executed by at least one processor and can complete fixed functions, which are stored in a memory.
[0071] Lubricant oil characteristic change model construction module: Test the lubricant oil, and construct a relationship model between the lubricant oil characteristic change and the gearbox load and operating time based on the test results, which is recorded as the lubricant oil characteristic change model.
[0072] Parameter configuration module: configure the target load and target running time, and obtain the maximum load of the test bench.
[0073] Accelerated life test minimum time acquisition module: Use the lubricant characteristic change model to process the target load, target operating time and maximum load to obtain the shortest time for the accelerated life test.
[0074] Accelerated life test load acquisition module: Use the lubricant characteristic change model to process the target load, target operating time and the minimum time of the accelerated life test to obtain the accelerated life test load.
[0075] The gearbox lubricant oil accelerated life test load determination system of the present embodiment is used to implement the aforementioned gearbox lubricant oil accelerated life test load determination method. Therefore, the specific implementation method of the system can be seen in the embodiment section of the gearbox lubricant oil accelerated life test load determination method in the previous text. Therefore, its specific implementation method can refer to the description of the corresponding various parts of the embodiment, which will not be elaborated here.
[0076] In addition, since the gearbox lubricant oil accelerated life test load determination system of this embodiment is used to implement the aforementioned gearbox lubricant oil accelerated life test load determination method, its function corresponds to that of the aforementioned method and will not be repeated here.
[0077] The above disclosure is only a preferred embodiment of the present invention, but the present invention is not limited thereto. Any non-creative changes that can be thought of by a person skilled in the art, as well as several improvements and modifications made without departing from the principle of the present invention, should fall within the protection scope of the present invention.
Claims
1. A method for determining the load of a gearbox lubricating oil accelerated life test, characterized in that: The following steps are involved: The lubricating oil is tested, and a relationship model between the lubricating oil characteristic change and the gearbox load and running time is constructed based on the test results, which is recorded as the lubricating oil characteristic change model; Configure the target load and target run time, and obtain the maximum load of the test bench; The target load, target operating time and maximum load are processed using the lubricant property change model to obtain the shortest time for the accelerated life test; The target load, target operating time and minimum time of the accelerated life test are processed using the lubricant property change model to obtain the accelerated life test load.
2. The method for determining the load of the gearbox lubricating oil accelerated life test according to claim 1, characterized in that: Based on the test results, a model of the direct relationship between the change in lubricating oil characteristics and the gearbox load and running time was constructed, including: A relationship model between the lubricant additive content and the gearbox torque and operating time is constructed, which is denoted as the additive content variation model and is expressed by the following formula (1): （1） In the formula, Indicates the consumption of additives, Indicates the gearbox operating torque, Indicates the gearbox running time, Indicates the coefficient of variation of additive content.
3. The method for determining the load of the gearbox lubricating oil accelerated life test according to claim 2, characterized in that: Based on the test results, a model for the direct relationship between the change in lubricant characteristics and the gearbox load and operating time is constructed, including: The relationship model between lubricating oil viscosity and gearbox speed and running time is constructed, which is recorded as the viscosity percentage change model and is expressed by the following formula (2): （2） In the formula, Indicates the percentage of viscosity reduction, Indicates the gearbox operating speed. Indicates the coefficient of variation of viscosity.
4. The method for determining the load of the gearbox lubricating oil accelerated life test according to claim 3, characterized in that: Based on the test results, a model for the direct relationship between the change in lubricant characteristics and the gearbox load and operating time is constructed, including: The relationship model between the lubricating oil acid value and the gearbox temperature and operating time is constructed, which is denoted as the acid value change model and is expressed by the following formula (3): （3） In the formula, Indicates the change in acid value, Indicates the gearbox operating temperature, Indicates the coefficient of variation of acid value.
5. The method for determining the load of the gearbox lubricating oil accelerated life test according to claim 4, characterized in that: The gearbox operating torque, speed and temperature are the average torque, average speed and average temperature of the gearbox respectively.
6. The method for determining the load of the gearbox lubricating oil accelerated life test according to claim 5, characterized in that: The target load, target operating time and maximum load are processed using the lubricant characteristic change model to obtain the shortest time for the accelerated life test, including: Using formula (1) to process the target average torque, target operating time and maximum torque, the following formula (4) is obtained: （4） In the formula, represents the target average torque, represents the target running time, Indicates the maximum torque, Indicates the maximum torque accelerated life test time; Calculate formula (4) to obtain the maximum torque accelerated life test time; Using formula (2) to process the target average speed, target operating time and maximum speed, we obtain the following formula (5): （5） In the formula, represents the target average speed, represents the target running time, Indicates the maximum speed, Indicates the maximum speed accelerated life test time; Calculate formula (5) to obtain the maximum speed accelerated life test time; Using formula (3) to process the target average temperature, target operating time and maximum temperature, we obtain the following formula (6): （6） In the formula, represents the target average temperature, represents the target running time, Indicates the maximum temperature, Indicates the maximum temperature accelerated life test time; Calculate formula (6) to obtain the maximum temperature accelerated life test time; The minimum time of the accelerated life test is calculated by the following formula (7): （7） In the formula, Indicates the minimum time for accelerated life test.
7. The method for determining the load of the gearbox lubricating oil accelerated life test according to claim 6, characterized in that: The target load, target operating time and the minimum time of the accelerated life test are processed using the lubricant characteristic change model to obtain the accelerated life test load, including: Using formula (1) to process the target average torque, target operating time and the minimum time of the accelerated life test, the following formula (8) is obtained: （8） In the formula, Indicates the accelerated life test torque; The accelerated life test torque is obtained by calculating formula (8).
8. The method for determining the load of the gearbox lubricating oil accelerated life test according to claim 7, characterized in that: The target load, target operating time and minimum time of the accelerated life test are processed using the lubricant property change model to obtain the accelerated life test load, which also includes: Using formula (2) to process the target average speed, target operating time and the minimum time of the accelerated life test, the following formula (9) is obtained: （9） In the formula, Indicates the speed of accelerated life test; The accelerated life test speed is obtained by calculating formula (9).
9. The method for determining the load of the gearbox lubricating oil accelerated life test according to claim 8, characterized in that: The target load, target operating time and minimum time of the accelerated life test are processed using the lubricant property change model to obtain the accelerated life test load, which also includes: Formula (3) is used to process the target average temperature, target operating time and the minimum time of the accelerated life test to obtain the following formula (10): （10） In the formula, Indicates the accelerated life test temperature; The accelerated life test temperature is obtained by calculating formula (10).
10. A gearbox lubricant accelerated life test load determination system, characterized in that: include, Lubricant oil characteristic change model construction module: Test the lubricant oil, and construct a relationship model between the lubricant oil characteristic change and the gearbox load and running time based on the test results, which is recorded as the lubricant oil characteristic change model; Parameter configuration module: configure the target load and target running time, and obtain the maximum load of the test bench; The module for obtaining the shortest time of accelerated life test: uses the lubricant characteristic change model to process the target load, target operating time and maximum load to obtain the shortest time of accelerated life test; Accelerated life test load acquisition module: Use the lubricant characteristic change model to process the target load, target operating time and the minimum time of the accelerated life test to obtain the accelerated life test load.