Shifting machine testing method and device
Through the combined methods of stress testing and fatigue testing, combined with deep learning models and Miner's law, the performance and reliability of the transfer lift are comprehensively evaluated, which solves the difficult problems of evaluating fatigue life and load bearing capacity in transfer lift testing and ensures the safety of people with limited mobility.
Patent Information
- Application Number
- CN202511043472.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-28
- Publication Date
- 2025-10-17
AI Technical Summary
How to conduct reliability testing on transfer lifts to ensure the fatigue life and load-bearing capacity of their mechanical structures and avoid secondary injuries to people with limited mobility.
A combination of pressure testing and fatigue testing was used. The pressure testing device applied constant pressure to perform multiple lifts. The fatigue testing device simulated multiple lifts under no-load and loaded conditions. The performance and reliability of the transfer lift were evaluated using a deep learning model and Miner's law.
Comprehensively evaluate the performance and reliability of lifts, accurately predict fatigue life and performance degradation, identify potential problems, and improve test accuracy and reliability.
Smart Images
Figure CN120800769A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application belongs to the technical field of mechanical testing, and more particularly relates to a testing method and device of a transfer machine. BACKGROUND
[0002] The transfer machine is a device used for assisting the action-impaired population (such as patients and the elderly) to transfer positions in the medical care field, and realizes the safe transfer of bed-wheelchair, sickbed-surgery table and other scenes through lifting, translation and other actions. The transfer machine needs to have high reliability, because the load objects are mostly action-limited population, and if mechanical failure occurs, it may cause secondary injury, so the fatigue life and load bearing capacity of the mechanical structure are key safety indicators.
[0003] Therefore, how to test the transfer machine becomes a key problem. SUMMARY
[0004] The purpose of the present application is to provide a reliable testing method for a transfer machine.
[0005] The first aspect of the embodiment of the present application provides a testing method for a transfer machine, applied to a transfer machine testing device, the transfer machine testing device comprising a pressure testing device, a fatigue testing device and a controller, the testing method being executed by the controller, and the testing method comprising: in response to receiving a first test instruction, controlling the pressure testing device to perform pressure testing on the to-be-tested transfer machine based on a first test mode, and obtaining a pressure testing result; the first test mode comprising: applying a constant pressure to the to-be-tested transfer machine while controlling the to-be-tested transfer machine to lift multiple times; in response to receiving a second test instruction, controlling the fatigue testing device to perform fatigue testing on the to-be-tested transfer machine based on a second test mode, and obtaining a fatigue testing result; the second test mode comprising: controlling the to-be-tested transfer machine to lift multiple times in an unloaded state, and controlling the to-be-tested transfer machine to lift multiple times in a loaded state, and obtaining the fatigue testing result; wherein the speed of controlling the to-be-tested transfer machine to lift in the first test mode is less than or equal to the speed of controlling the to-be-tested transfer machine to lift in the second test mode; determining a target testing result of the to-be-tested transfer machine based on the pressure testing result and the fatigue testing result The second aspect of the embodiment of the present application provides a testing device for a transfer machine, applied to a controller of a transfer machine testing device, the transfer machine testing device further comprising a pressure testing device and a fatigue testing device, and the testing comprising: a pressure testing module, configured to, in response to receiving a first test instruction, control the pressure testing device to perform pressure testing on the to-be-tested transfer machine based on a first test mode, and obtain a pressure testing result; the first test mode comprising: applying a constant pressure to the to-be-tested transfer machine while controlling the to-be-tested transfer machine to lift multiple times; The fatigue test module is configured to, in response to receiving the second test instruction, control the fatigue test device to perform a fatigue test on the to-be-tested shift machine based on a second test mode, and obtain a fatigue test result. The second test mode includes: controlling the to-be-tested shift machine to perform multiple ascents and descents in an unloaded state, and controlling the to-be-tested shift machine to perform multiple ascents and descents in a loaded state, to obtain the fatigue test result. The speed of controlling the to-be-tested shift machine to ascend and descend in the first test mode is less than or equal to the speed of controlling the to-be-tested shift machine to ascend and descend in the second test mode. The test result determination module is configured to determine a target test result of the to-be-tested shift machine based on the pressure test result and the fatigue test result.
[0006] In a third aspect, the embodiments of the present application provide a shift machine test device, which comprises a controller, a pressure test device, a fatigue test device, a memory, and a computer program stored in the memory and running on the controller. When the controller executes the computer program, the steps of the shift machine test method described above are implemented.
[0007] In a fourth aspect, the embodiments of the present application provide a computer readable storage medium, which stores a computer program. When the computer program is executed by a processor, the steps of the shift machine test method described above are implemented.
[0008] The shift machine test method and device provided by the embodiments of the present application have the following advantages: The present application can comprehensively evaluate the performance and reliability of the shift machine through pressure test and fatigue test. The pressure test is used to detect the pressure data of the to-be-tested shift machine when it is subjected to constant pressure and ascends and descends, while the fatigue test simulates the long-term use of the shift machine in unloaded and loaded states, and verifies its durability and stability. The pressure test adopts the mode of applying constant pressure to the shift machine while performing multiple ascents and descents, which helps to find out the structural strength and stability problems of the shift machine when it is subjected to pressure. The fatigue test simulates various working conditions of the shift machine in actual use through multiple ascents and descents in unloaded and loaded states, so as to more accurately evaluate the fatigue life and performance degradation of the shift machine. The present application can more comprehensively evaluate the performance and reliability of the shift machine by combining the pressure test result and the fatigue test result. BRIEF DESCRIPTION OF DRAWINGS
[0009] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort.
[0010] Figure 1A flowchart of a test method of a shifter provided in an embodiment of the present application is shown in FIG. 1. Figure 2 A structural block diagram of a test device of a shifter provided in an embodiment of the present application is shown in FIG. 2. Figure 3 A schematic block diagram of a shifter test device provided in an embodiment of the present application is shown in FIG. 3. DETAILED DESCRIPTION
[0011] In the following description, specific details are set forth in order to provide a thorough understanding of embodiments of the application. However, persons having ordinary skill in the art will appreciate that embodiments of the application can be practiced without the specific details, and that the scope of the application is not limited to the particular embodiments described herein. In other instances, details of well-known systems, apparatuses, methods and circuits have been omitted in order to not obscure the understanding of the present application.
[0012] In order to make the objects, technical solutions and advantages of the present application clearer, the following will be described in detail with reference to the accompanying drawings.
[0013] Reference will be made to Figure 1 , Figure 1 A flowchart of a test method of a shifter provided in an embodiment of the present application is shown in FIG. 1. The method is applied to a shifter test device, which includes a pressure test device, a fatigue test device and a controller. The test method can be executed by the controller, and can include S101-S103. The pressure test device and the fatigue test device can be conventional test devices in the field of machine and instrument testing, and the controller is used to control the test devices to perform test actions.
[0014] S101: In response to receiving a first test instruction, the pressure test device is controlled to perform pressure testing on a to-be-tested shifter based on a first test mode, to obtain a pressure test result. The first test mode includes applying constant pressure to the to-be-tested shifter while controlling the to-be-tested shifter to perform multiple lifting operations.
[0015] In the present embodiment, the first test instruction can be a command signal for starting pressure testing sent by a test personnel through a terminal device carried by the test personnel or directly through touching a touch screen, etc., to the controller, for instructing the controller to perform corresponding actions. The pressure test device is used to apply controllable pressure to the to-be-tested shifter, and monitor the stability of the pressure value of the to-be-tested shifter. The first test mode is characterized in that multiple lifting operations are performed synchronously under constant pressure, for example, 800N constant vertical pressure is applied to the lifting mechanism of the shifter, while the shifter is controlled to perform 100 complete lifting cycles at a speed of 0.1m / s.
[0016] In the embodiment, the constant pressure refers to a pressure that keeps the pressure value substantially unchanged during the test, which is used to simulate the static load scenario of the shifting machine in actual use. The constant pressure value and the number of times of lifting and lowering in the first test mode can be set based on experience or by a tester based on preference or test standards. The pressure test result can be the pressure data of the shifting machine after each lifting and lowering action or during each lifting and lowering action, and the constant pressure value applied by the pressure test device during the pressure test. The pressure test result can also be a specific data determined based on the pressure monitoring data of the shifting machine during the pressure test, which is used to represent the performance of the shifting machine after the pressure test. The value can be determined based on a simple determination rule, for example, a plurality of preset fluctuation ranges are set, and the corresponding value is determined according to the pressure fluctuation of the shifting machine during the pressure test. Details are not described herein again.
[0017] S102: In response to receiving the second test instruction, the controller controls the fatigue test device to perform fatigue test on the shifting machine based on the second test mode, and obtains a fatigue test result; the second test mode includes: controlling the shifting machine to perform multiple lifting and lowering in an unloaded state, and controlling the shifting machine to perform multiple lifting and lowering in a loaded state, and obtaining the fatigue test result; wherein the speed of lifting and lowering of the shifting machine in the first test mode is less than or equal to the speed of lifting and lowering of the shifting machine in the second test mode.
[0018] In the embodiment, the second test instruction has the same triggering mode as the first test instruction, and the difference lies in the actions performed by the controller after receiving the first test instruction and the second test instruction. That is, the execution action corresponding to the first test instruction is the pressure test, and the execution action corresponding to the second test instruction is the fatigue test. The fatigue test device is a device for driving the shifting machine to perform repeated lifting and lowering actions and monitoring operating parameters.
[0019] In the embodiment, the second test mode is a cyclic test in unloaded and loaded states, for example, 500 unloaded lifting and lowering actions can be performed first, and then 1000 loaded lifting and lowering actions can be performed, or the loaded lifting and lowering actions can be performed first, and then the unloaded lifting and lowering actions can be performed. The unloaded state is a working state in which the shifting machine does not have additional load and only bears its own weight, which is used to simulate the case that the shifting machine does not carry a patient. The loaded state is a working state in which the shifting machine carries a simulated load (such as a counterweight). For example, a 75kg counterweight equivalent to a patient is added to the carrying platform of the shifting machine.
[0020] In this embodiment, the lifting speed during the fatigue test is greater than or equal to the speed during the stress test to accelerate fatigue accumulation. Furthermore, the purpose of the stress test is to monitor whether the pressure of the tested lift remains constant during the lifting process. Since the lift itself is intended to facilitate the daily life of people with disabilities or for caregivers, the lifting speed is not set too fast in actual use. Therefore, the lifting speed during the stress test can be less than or equal to the lifting speed during the fatigue test. The fatigue test result, like the stress test result, can be either fatigue test data or a specific value determined based on preset rules.
[0021] Specifically, the fatigue test result can be determined by controlling the fatigue test device to perform a fatigue test on the lift to be tested based on the second test mode to obtain the fatigue test result, including: Determining a no-load test result based on operating parameters of the tested lift during multiple lifting and lowering actions in a no-load state; Determining a load test result based on operating parameters of the lift under test during multiple lifting and lowering actions under load; The fatigue test results are determined based on the no-load test results and the loaded test results.
[0022] In this embodiment, both the no-load test result and the loaded test result can be specific numerical values. The determination process can be based on preset rules and mapping relationships, for example, can be determined by Table 1, which is only an example and not a limitation:
[0023] In this embodiment, S101 and S102 do not have a fixed order of execution, but cannot be executed simultaneously. Preferably, S101 should be executed first and then S102, because the intensity of the fatigue test is greater than that of the stress test. If the fatigue test of S102 is executed first, it may result in unsatisfactory data during the stress test. However, the reason is not that the initial state of the transfer machine is unsatisfactory, but that its state is unsatisfactory after the high-intensity fatigue test.
[0024] S103: Determine a target test result for the lift to be tested based on the pressure test result and the fatigue test result.
[0025] In this embodiment, the pressure test results and fatigue test results can be specific numerical values. A weighted calculation is performed on the two to obtain the final target test result of the transfer lift under test. The weights of the weighted calculation can be determined based on experience. Furthermore, the target test result of the transfer lift under test can be determined based on the data obtained by the weighted calculation and a preset mapping relationship. The target test result can be a graded result such as excellent, good, acceptable, or poor. For example, a specific numerical value of the aforementioned weighted calculation greater than 90 is defined as excellent, 75-90 is defined as good, 60-75 is defined as acceptable, and less than 60 is defined as poor. Alternatively, a transfer lift under test with a weighted calculation value greater than 90 can be defined as acceptable, and a transfer lift under test with a weighted calculation value less than or equal to 90 can be defined as unacceptable.
[0026] From the above, it can be concluded that the present application can comprehensively evaluate the performance and reliability of the transfer lift through two methods: pressure testing and fatigue testing. The pressure test is used to detect the pressure data of the transfer lift to be tested when it is subjected to constant pressure and raised and lowered, while the fatigue test simulates the long-term use of the transfer lift in empty and loaded states to test its durability and stability. The pressure test adopts the method of applying constant pressure to the transfer lift while performing multiple lifts, which helps to discover the structural strength and stability problems of the transfer lift when under pressure. The fatigue test simulates various working conditions of the transfer lift in actual use by multiple lifts in empty and loaded states, so as to more accurately evaluate its fatigue life and performance degradation. By combining the pressure test results and the fatigue test results, the present application can more comprehensively evaluate the performance and reliability of the transfer lift.
[0027] In one embodiment of the present application, controlling the transfer machine to be tested to perform multiple lifts in a loaded state includes: The load weight is determined based on the number of times the transfer lift to be tested is raised and lowered in a loaded state; the number of times the transfer lift to be tested is raised and lowered in a loaded state is positively correlated with the load weight; The lift under test is controlled to perform multiple lifts based on the load weight.
[0028] In this embodiment, the load applied to the lift in the loaded state is dynamically adjusted according to the test phase. Adjustment of the load can be achieved by applying pressure, not by applying a weight. The loaded state is the operating state of the lift carrying a simulated load, simulating actual use. As the number of test cycles increases, the load is gradually increased to simulate the wear and tear that occurs in actual use.
[0029] The load capacity can be determined based on a first formula, which can be: , For the The load capacity during the first lift, is the initial load weight, which can be a certain percentage of the rated load, for example, 50%. is the base weight of each step increase, is the number of step intervals, is the acceleration factor, which is used to simulate the nonlinear increase of load over time. The relevant testers can set it based on the test intensity. The first formula can be understood as: after completing cycles, the load weight increases by one level, and the load increase is realized through to accelerate the load increase with the increase of the number of times, which is closer to the actual device aging characteristics.
[0030] From the above, the present application dynamically adjusts the load weight according to the number of times of lifting and lowering of the displacement machine under load, which can more realistically simulate the load change of the displacement machine in actual use, making the test more close to the actual situation, and helping to find the performance changes and potential problems of the displacement machine under different load conditions. By gradually increasing the load weight, the present application can simulate the change of load bearing capacity of the displacement machine due to wear accumulation in actual use, thereby more accurately evaluating the durability and reliability of the displacement machine. The present application introduces an acceleration factor to simulate the nonlinear increase of load over time, which is used to simulate that the load bearing capacity of the device often does not decrease linearly, but accelerates with the increase of use time. Through the first formula, the load increase is accelerated with the increase of the number of times, which can more accurately reflect this characteristic and improve the accuracy and reliability of the test.
[0031] In an embodiment of the present application, the load state is a state in which the displacement machine under test carries a load when performing lifting and lowering actions; the weight of the load is the load weight; determining the load test result based on the running parameters in the process of the displacement machine under test performing multiple lifting and lowering actions in the load state, comprising: inputting the running parameters after each lifting and lowering action of the displacement machine under test in the load state, the number of times of each lifting and lowering action, and the load weight of each lifting and lowering action into the load test model to obtain the fatigue life prediction result of the displacement machine under test; determining the cumulative damage result of the displacement machine under test based on the fatigue life prediction result of the displacement machine under test and the load weight of each lifting and lowering action; determining the load test result based on the fatigue life prediction result and the cumulative damage result.
[0032] In this embodiment, the running parameter can be a physical quantity exhibited by the shifter during a belt load lifting process, such as motor current, lifting time, temperature of a key component, etc., and the belt load test model can be an LSTM model. It should be noted that the belt load test model is a model after training, and the training data set is the running parameter of the shifter after each lifting action under the belt load state, the number of times of each lifting action, the belt load weight of each lifting action, and the corresponding standard fatigue life prediction result. The fatigue life prediction result is the predicted number of cycles that the shifter can withstand under the current load mode output by the belt load test model.
[0033] In this embodiment, the cumulative damage result is used to quantify the structural damage degree of the equipment caused by repeated loading, which can be calculated based on the Miner rule. The specific calculation process is not described again in this embodiment. For example, after 1000 cycles, the cumulative damage degree is 0.19, that is, 19% of the predicted life has been consumed.
[0034] In this embodiment, the cumulative damage result of the shifter to be tested can also be determined based on the mapping relationship between the fatigue life prediction result of the shifter to be tested, the belt load weight of each lifting action, and the cumulative damage result of the shifter. The preset mapping relationship can be set by a person skilled in the art based on experience or calculated based on the aforementioned Miner rule.
[0035] In this embodiment, the belt load test result can be determined based on the fatigue life prediction result and the cumulative damage result. For example, the belt load test result is determined to be qualified only when the fatigue life prediction result is greater than 1000 times and the cumulative damage result is less than 0.1, and otherwise, it is not qualified.
[0036] From the above, the present application utilizes the capturing ability of the deep learning model for complex data relationship, so that the fatigue life prediction is more accurate. Secondly, based on the fatigue life prediction result and the belt load weight of each lifting action, the structural damage degree of the equipment caused by repeated loading can be quantified through the Miner rule or other preset mapping relationship, which helps to intuitively understand the damage situation of the shifter.
[0037] In this embodiment, the running parameter of the shifter to be tested after each lifting action under the belt load state, the number of times of each lifting action, and the belt load weight of each lifting action are input into the belt load test model to obtain the fatigue life prediction result of the shifter to be tested, including: For each lifting action, the weight corresponding to the running parameter after the lifting action, the weight corresponding to the number of times of the lifting action, and the weight corresponding to the belt load weight of the lifting action are determined based on the number of times of the lifting action. The operating parameters of the transfer lift under load after each lifting action, the number of lifting actions, the load weight of each lifting action, and their corresponding weights are input into the load test model to obtain the fatigue life prediction result of the transfer lift under load.
[0038] In this embodiment, when the operating parameters of the transfer machine to be tested after each lifting action in a loaded state, the number of lifting actions each time, and the load weight of each lifting action are input into the load test model, the weight corresponding to each data can be determined. Because the weight corresponding to each data should be different in different test stages, the fatigue life prediction result of the transfer machine to be tested is obtained by inputting each data and its corresponding weight into the load test model.
[0039] Specifically, the weight of each parameter can be determined as follows: Determining, based on the number of times the lifting action is performed, a weight corresponding to an operating parameter after the lifting action is performed, a weight corresponding to the number of times the lifting action is performed, and a weight corresponding to the load weight of the lifting action, including: In response to the number of times the lifting action is performed being less than or equal to the first number, weights are assigned to the operating parameters after the lifting action, the number of times the lifting action is performed, and the load weight of the lifting action according to a first weight ratio, thereby obtaining weights corresponding to the operating parameters after the lifting action, the weights corresponding to the number of times the lifting action is performed, and the weights corresponding to the load weight of the lifting action; In response to the number of times the lifting action is performed being greater than the first number and less than the second number, weights are assigned to the operating parameters after the lifting action, the number of times the lifting action is performed, and the load weight of the lifting action according to a second weight ratio, thereby obtaining weights corresponding to the operating parameters after the lifting action, the weights corresponding to the number of times the lifting action is performed, and the weights corresponding to the load weight of the lifting action; Among them, the weight corresponding to the operating parameter after the lifting action is performed in the first weight ratio is greater than the weight corresponding to the operating parameter after the lifting action is performed in the second weight ratio.
[0040] In response to the number of times the lifting action is performed being greater than or equal to the second number, weights are assigned to the operating parameters after the lifting action, the number of times the lifting action is performed, and the load weight of the lifting action according to a third weight ratio, thereby obtaining weights corresponding to the operating parameters after the lifting action, the weights corresponding to the number of times the lifting action is performed, and the weights corresponding to the load weight of the lifting action; The weight corresponding to the running parameter after the lifting action in the first weight proportion is greater than the weight corresponding to the running parameter after the lifting action in the third weight proportion.
[0041] The weight corresponding to the number of times of the lifting action in the second weight proportion is greater than the weight corresponding to the number of times of the lifting action in the first weight proportion, and the weight corresponding to the number of times of the lifting action in the second weight proportion is greater than the weight corresponding to the number of times of the lifting action in the third weight proportion. The weight corresponding to the load weight of the lifting action in the third weight proportion is greater than the weight corresponding to the load weight of the lifting action in the first weight proportion, and the weight corresponding to the load weight of the lifting action in the third weight proportion is greater than the weight corresponding to the load weight of the lifting action in the second weight proportion.
[0042] The reason is that: in the initial stage of the test, the equipment just enters the cycle test, and the structure is in the "initial stress response" stage. At this time, the micro-damage (such as micro-cracks) of the component structure is not significant, but the load weight directly determines the macro stress level and is the starting factor of damage, so the load weight weight should be increased in the initial stage.
[0043] In the middle stage of the test, with the increase of the number of cycles, the micro-damage begins to accumulate nonlinearly. At this time, the number of cycles becomes the key to damage acceleration, and the more the number of times, the more obvious the fatigue crack propagation and material degradation, that is, the stage dominated by fatigue accumulation.
[0044] In the later stage of the test, the equipment approaches the design life, and the micro-damage has developed into macroscopic defects. At this time, the abnormal running parameters (such as motor current fluctuation, vibration intensification, and noise increase) will increase sharply, and the above parameters can directly reflect the degree of performance degradation.
[0045] In the embodiment, when the number of the current lifting action is less than or equal to the first number, it indicates that the current test is in the initial stage. When the number of the current lifting action is greater than the first number and less than the second number, it indicates that the current test is in the middle stage. When the number of the current lifting action is greater than or equal to the second number, it indicates that the current test is in the later stage. The first number and the second number can be determined based on the total number of tests, for example, a preset proportion of the total number. The specific ratio of the first weight ratio, the second weight ratio and the third weight ratio can be set by the relevant test personnel based on multiple experiments or preferences, but it needs to meet the various limitations described above, that is, the weight corresponding to the running parameter after the current lifting action in the first weight ratio is greater than the weight corresponding to the running parameter after the current lifting action in the second weight ratio, and greater than the weight corresponding to the running parameter after the current lifting action in the third weight ratio. The weight corresponding to the number of the current lifting action in the second weight ratio is greater than the weight corresponding to the number of the current lifting action in the first weight ratio, and greater than the weight corresponding to the number of the current lifting action in the third weight ratio. The weight corresponding to the load weight of the current lifting action in the third weight ratio is greater than the weight corresponding to the load weight of the current lifting action in the first weight ratio, and greater than the weight corresponding to the load weight of the current lifting action in the second weight ratio.
[0046] From the above, it can be concluded that the application can more accurately reflect the damage characteristics of the shifter in different test stages by dynamically adjusting the weights of the running parameters, the lifting number and the load weight according to the number of the lifting action. In the initial, middle and later stages of the test, the influence degree of different factors on the fatigue life is different, and the dynamic weight distribution can capture these changes, thereby improving the accuracy of the fatigue life prediction. The weight adjustment strategy in the embodiment of the application is consistent with the damage law of the actual device in the cycle test. The initial stage up-regulates the weight of the load weight, which reflects the importance of the load weight as a damage starting factor; the middle stage emphasizes the cycle number weight, which reflects the dominant role of fatigue accumulation; the later stage pays attention to the running parameter weight, which captures the performance degradation characteristics of the device close to the design life. The application can more targetedly evaluate the performance of the shifter by using different weight ratios in different test stages, which helps to identify potential problems of the shifter under different loads and cycle numbers, and improves the effectiveness and reliability of the test.
[0047] A test method of a shifter corresponding to the above embodiment, Figure 2 A structural block diagram of a test device of a shifter is provided for an embodiment of the application. For the sake of convenience, only the parts related to the embodiments of the application are shown.Figure 2 The test device 20 for a transfer machine is applied to a controller of a transfer machine test device, which also includes a pressure test device and a fatigue test device. The test device 20 for a transfer machine includes: a pressure test module 21, a fatigue test module 22, and a test result determination module 23.
[0048] The pressure testing module 21 is configured to, in response to receiving a first test instruction, control the pressure testing device to perform a pressure test on the transfer machine to be tested based on a first test method to obtain a pressure test result; the first test method includes: applying a constant pressure to the transfer machine to be tested while controlling the transfer machine to be tested to be raised and lowered multiple times; The fatigue testing module 22 is configured to, in response to receiving the second test instruction, control the fatigue testing device to perform a fatigue test on the transfer lift under test based on a second test mode to obtain a fatigue test result; the second test mode includes: controlling the transfer lift under test to be raised and lowered multiple times in an unloaded state, and controlling the transfer lift under test to be raised and lowered multiple times in a loaded state to obtain a fatigue test result; wherein the speed of controlling the transfer lift under test to be raised and lowered in the first test mode is less than or equal to the speed of controlling the transfer lift under test to be raised and lowered in the second test mode; The test result determination module 23 is configured to determine a target test result of the transfer lift to be tested based on the pressure test result and the fatigue test result.
[0049] In one embodiment of the present application, the fatigue testing module 22 is specifically configured to determine a no-load test result based on operating parameters of the tested transfer lift during multiple lifting actions in a no-load state; Determining a load test result based on operating parameters of the lift under test during multiple lifting and lowering actions under load; The fatigue test results are determined based on the no-load test results and the loaded test results.
[0050] In one embodiment of the present application, the fatigue testing module 22 is further configured to determine the load weight based on the number of times the transfer lift to be tested is raised and lowered in a loaded state; the number of times the transfer lift to be tested is raised and lowered in a loaded state is positively correlated with the load weight; The lift under test is controlled to perform multiple lifts based on the load weight.
[0051] In one embodiment of the present application, the loaded state is a state in which the lift to be tested carries a load when performing a lifting action; the weight of the load is the loaded weight; The test result determination module 23 is specifically configured to input the operating parameters of the transfer lift under load after each lifting action, the number of lifting actions, and the load weight of each lifting action into the load test model to obtain a fatigue life prediction result of the transfer lift under load; determine the cumulative damage result of the to-be-tested shifter based on the fatigue life prediction result and the load weight of each lifting action; determine the load test result based on the fatigue life prediction result and the cumulative damage result.
[0052] In an embodiment of the present application, the test result determination module 23 is further configured to, for each lifting action, determine the weight corresponding to the operating parameter after the lifting action, the weight corresponding to the number of times of the lifting action, and the weight corresponding to the load weight of the lifting action based on the number of times of the lifting action; input the operating parameter after each lifting action of the to-be-tested shifter in the load state, the number of times of each lifting action, the load weight of each lifting action, and the respective corresponding weights into the load test model to obtain the fatigue life prediction result of the to-be-tested shifter.
[0053] In an embodiment of the present application, the test result determination module 23 is further configured to, in response to the number of times of the lifting action being less than or equal to the first number of times, assign weights to the operating parameter after the lifting action, the number of times of the lifting action, and the load weight of the lifting action according to the first weight proportion to obtain the weight corresponding to the operating parameter after the lifting action, the weight corresponding to the number of times of the lifting action, and the weight corresponding to the load weight of the lifting action; in response to the number of times of the lifting action being greater than the first number of times and less than the second number of times, assign weights to the operating parameter after the lifting action, the number of times of the lifting action, and the load weight of the lifting action according to the second weight proportion to obtain the weight corresponding to the operating parameter after the lifting action, the weight corresponding to the number of times of the lifting action, and the weight corresponding to the load weight of the lifting action; wherein the weight corresponding to the operating parameter after the lifting action in the first weight proportion is greater than the weight corresponding to the operating parameter after the lifting action in the second weight proportion.
[0054] In an embodiment of the present application, the test result determination module 23 is further configured to, in response to the number of times of the lifting action being greater than or equal to the second number of times, assign weights to the operating parameter after the lifting action, the number of times of the lifting action, and the load weight of the lifting action according to the third weight proportion to obtain the weight corresponding to the operating parameter after the lifting action, the weight corresponding to the number of times of the lifting action, and the weight corresponding to the load weight of the lifting action; Among them, the weight corresponding to the operating parameter after the lifting action is performed in the first weight ratio is greater than the weight corresponding to the operating parameter after the lifting action is performed in the third weight ratio.
[0055] See also Figure 3 , Figure 3 This is a schematic block diagram of a lift testing device provided in one embodiment of the present application. Figure 3 The lift testing device 300 in the embodiment shown may include: one or more controllers 301, one or more input devices 302, one or more output devices 303, and one or more memories 304. The controllers 301, input devices 302, output devices 303, and memories 304 communicate with each other via a communication bus 305. The memory 304 is used to store computer programs, which include program instructions. The controller 301 is used to execute the program instructions stored in the memory 304. The controller 301 is configured to call the program instructions to execute the functions of the modules / units in the above-mentioned device embodiments, such as Figure 2 The functions of the pressure testing module 21, the fatigue testing module 22 and the test result determination module 23 are shown.
[0056] It should be understood that in the embodiment of the present application, the controller 301 may be a central processing unit (CPU), and the processor may also be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor, etc.
[0057] The input device 302 may include a touchpad, a fingerprint collection sensor (for collecting user fingerprint information and fingerprint direction information), a microphone, etc. The output device 303 may include a display (LCD, etc.), a speaker, etc.
[0058] The memory 304 may include a read-only memory and a random access memory, and provides instructions and data to the controller 301. A portion of the memory 304 may also include a non-volatile random access memory. For example, the memory 304 may also store information about the device type.
[0059] In a specific implementation, the controller 301, the input device 302, and the output device 303 described in the embodiments of the present application can implement the implementation manners of the test method of the shifting machine provided by the embodiments of the present application, and can also implement the implementation manners of the shifting machine test device described in the embodiments of the present application, which will not be described herein again.
[0060] In another embodiment of the present application, a computer readable storage medium is provided, which stores a computer program. The computer program includes program instructions, which are executed by a processor to implement all or part of the processes of the above-mentioned embodiment methods. The computer program can also be used to instruct related hardware to complete the processes. The computer program can be stored in a computer readable storage medium. When the computer program is executed by the processor, the steps of the above-mentioned various method embodiments can be implemented. The computer program includes computer program code, which can be in the form of source code, object code, executable file, or some intermediate form. The computer readable medium can include any entity or device capable of carrying the computer program code, recording medium, U disk, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signal, telecommunication signal, and software distribution medium, etc.
[0061] The computer readable storage medium can be an internal storage unit of the shifting machine test device, such as a hard disk or a memory of the shifting machine test device. The computer readable storage medium can also be an external storage device of the shifting machine test device, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. Further, the computer readable storage medium can include both the internal storage unit and the external storage device of the shifting machine test device. The computer readable storage medium is used to store the computer program and other programs and data required by the shifting machine test device. The computer readable storage medium can also be used to temporarily store data that has been output or will be output.
[0062] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the shift machine test device and the unit described above can refer to the corresponding process in the foregoing method embodiments, and will not be repeated here.
[0063] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the shift machine test device and the unit described above can refer to the corresponding process in the foregoing method embodiments, and will not be repeated here.
[0064] In several embodiments provided in the present application, it should be understood that the disclosed shift machine test device and method can be implemented in other ways. For example, the above-described device embodiments are only schematic, for example, the division of the modules / units is only a logical function division, and actual implementation can have another division manner, for example, a plurality of modules, units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the displayed or discussed each other can be indirect coupling or communication connection through some interfaces or modules / units, and can also be electrical, mechanical or other form of connection.
[0065] The modules / units described as separate components can or can not be physically separated, and the components shown as modules / units can or can not be physical modules / units, that is, can be located in one place, or can be distributed to a plurality of network modules / units. Part or all of the modules / units can be selected according to actual needs to achieve the purpose of the embodiments of the present application.
[0066] In addition, each functional module / unit in each embodiment of the present application can be integrated in one processing module / unit, or each module / unit can exist physically, or two or more modules / units can be integrated in one module / unit. The integrated module / unit can be realized in the form of hardware or software functional module / unit.
[0067] The above merely provides the specific implementation of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present application, and these modifications or replacements should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
Claims
1. A method for testing a transfer machine, characterized in that: Applied to a transfer machine testing device, the transfer machine testing device includes a pressure testing device, a fatigue testing device and a controller, the testing method is executed by the controller, and the method includes: In response to receiving the first test instruction, controlling the pressure testing device to perform a pressure test on the transfer machine to be tested based on a first test mode to obtain a pressure test result; the first test mode includes: applying a constant pressure to the transfer machine to be tested while controlling the transfer machine to be tested to be raised and lowered multiple times; In response to receiving the second test instruction, controlling the fatigue testing device to perform a fatigue test on the transfer machine to be tested based on a second test mode to obtain a fatigue test result; the second test mode includes: controlling the transfer machine to be tested to be raised and lowered multiple times in an unloaded state, and controlling the transfer machine to be tested to be raised and lowered multiple times in a loaded state to obtain a fatigue test result; wherein the speed of controlling the transfer machine to be tested to be raised and lowered in the first test mode is less than or equal to the speed of controlling the transfer machine to be tested to be raised and lowered in the second test mode; A target test result of the lift to be tested is determined based on the pressure test result and the fatigue test result.
2. A method for testing a transfer machine according to claim 1, characterized in that: The controlling the fatigue testing device to perform a fatigue test on the transfer machine to be tested based on the second testing method to obtain a fatigue test result includes: Determining a no-load test result based on operating parameters of the tested lift during multiple lifting actions in a no-load state; Determining a load test result based on operating parameters of the tested lift during multiple lifting and lowering actions under load; The fatigue test result is determined based on the no-load test result and the loaded test result.
3. The method for testing a transfer machine according to claim 1, wherein: The controlling the transfer machine to be tested to perform multiple lifting and lowering operations in a loaded state includes: Determining the load weight based on the number of times the transfer machine to be tested is raised and lowered in a loaded state; the number of times the transfer machine to be tested is raised and lowered in a loaded state is positively correlated with the load weight; The transfer machine to be tested is controlled to be raised and lowered multiple times based on the load weight.
4. A method for testing a transfer machine according to claim 2, characterized in that: The loaded state refers to the state in which the lift to be tested carries a load when performing a lifting action; the weight of the load is the loaded weight; The determining of the load test result based on the operating parameters of the transfer machine to be tested during the multiple lifting actions under the load state includes: Inputting the operating parameters of the transfer machine under test after each lifting action under load, the number of lifting actions performed each time, and the load weight of each lifting action into a load test model to obtain a fatigue life prediction result of the transfer machine under test; Determining a cumulative damage result of the transfer machine to be tested based on a fatigue life prediction result of the transfer machine to be tested and the load weight of each lifting action; The load test result is determined based on the fatigue life prediction result and the cumulative damage result.
5. A method for testing a transfer machine according to claim 4, characterized in that: The step of inputting the operating parameters of the transfer machine to be tested after each lifting action under load, the number of lifting actions performed each time, and the load weight of each lifting action into the load test model to obtain the fatigue life prediction result of the transfer machine to be tested includes: For each lifting action, the weight corresponding to the operating parameter after the lifting action, the weight corresponding to the number of the lifting action, and the weight corresponding to the load of the lifting action are determined based on the number of times the lifting action is performed; The operating parameters of the transfer machine to be tested after each lifting action under load, the number of lifting actions each time, the load weight of each lifting action, and their corresponding weights are input into the load test model to obtain the fatigue life prediction result of the transfer machine to be tested.
6. A method for testing a transfer machine according to claim 5, characterized in that: The determining, based on the number of times the lifting action is performed, of the weight corresponding to the operating parameter after the lifting action is performed, the weight corresponding to the number of times the lifting action is performed, and the weight corresponding to the load weight of the lifting action is performed, includes: In response to the number of times the lifting action is performed being less than or equal to the first number, weights are assigned to the operating parameters after the lifting action, the number of times the lifting action is performed, and the load weight of the lifting action according to a first weight ratio, thereby obtaining weights corresponding to the operating parameters after the lifting action, the weights corresponding to the number of times the lifting action is performed, and the weights corresponding to the load weight of the lifting action; In response to the number of times the lifting action is performed being greater than the first number and less than the second number, weights are assigned to the operating parameters after the lifting action, the number of times the lifting action is performed, and the load weight of the lifting action according to a second weight ratio, thereby obtaining weights corresponding to the operating parameters after the lifting action, the weights corresponding to the number of times the lifting action is performed, and the weights corresponding to the load weight of the lifting action; Among them, the weight corresponding to the operating parameter after the lifting action is performed in the first weight ratio is greater than the weight corresponding to the operating parameter after the lifting action is performed in the second weight ratio.
7. A method for testing a transfer machine according to claim 6, characterized in that: The determining, based on the number of times the lifting action is performed, of the weight corresponding to the operating parameter after the lifting action is performed, the weight corresponding to the number of times the lifting action is performed, and the weight corresponding to the load weight of the lifting action is also included: In response to the number of times the lifting action is performed being greater than or equal to the second number, weights are assigned to the operating parameters after the lifting action, the number of times the lifting action is performed, and the load weight of the lifting action according to a third weight ratio, thereby obtaining weights corresponding to the operating parameters after the lifting action, the weights corresponding to the number of times the lifting action is performed, and the weights corresponding to the load weight of the lifting action; Among them, the weight corresponding to the operating parameter after the lifting action is performed in the first weight ratio is greater than the weight corresponding to the operating parameter after the lifting action is performed in the third weight ratio.
8. A testing device for a transfer machine, characterized in that: A controller for a transfer machine testing device, wherein the transfer machine testing device also includes a pressure testing device and a fatigue testing device, wherein the devices include: a pressure testing module configured to, in response to receiving a first test instruction, control the pressure testing device to perform a pressure test on the transfer machine to be tested based on a first test method to obtain a pressure test result; the first test method comprising: applying a constant pressure to the transfer machine to be tested while controlling the transfer machine to be tested to be raised and lowered multiple times; a fatigue testing module configured to, in response to receiving a second test instruction, control the fatigue testing device to perform a fatigue test on the transfer machine to be tested based on a second test mode to obtain a fatigue test result; the second test mode includes: controlling the transfer machine to be tested to be raised and lowered multiple times in an unloaded state, and controlling the transfer machine to be tested to be raised and lowered multiple times in a loaded state to obtain a fatigue test result; wherein the speed of controlling the transfer machine to be tested to be raised and lowered in the first test mode is less than or equal to the speed of controlling the transfer machine to be tested to be raised and lowered in the second test mode; A test result determination module is configured to determine a target test result of the transfer machine to be tested based on the pressure test result and the fatigue test result.
9. A transfer machine testing device, comprising a controller, a pressure testing device, a fatigue testing device, a memory, and a computer program stored in the memory and running on the controller, characterized in that: When the controller executes the computer program, the steps of the method according to any one of claims 1 to 7 are implemented.
10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 7 are implemented.