Method and device for determining shaft deflection of water pump rotating shaft and computer equipment

Abstract

The invention relates to a shaft deflection determination method and device of a water pump rotating shaft, computer equipment, a storage medium and a computer program product. Relates to the technical field of data measurement. The method comprises the following steps: acquiring a first dependent variable before assembly and a second dependent variable after assembly of a rotating shaft of a to-be-treated water pump; obtaining a dependent variable difference value based on the first dependent variable and the second dependent variable; according to the pre-obtained conversion coefficient and dependent variable difference value of the rotating shaft of the to-be-processed water pump, the shaft deflection of the to-be-processed water pump is obtained; the conversion coefficient is used for representing the conversion relation between the shaft deflection and the dependent variable of the rotating shaft. By adopting the method, the shaft deflection of the rotating shaft can be accurately obtained when the water pump is in the closed state.

Description

Technical Field

[0001] The present application relates to the field of data measurement technology, and in particular to a method, device, computer equipment, storage medium and computer program product for determining the shaft deflection of a water pump shaft. Background Art

[0002] The water pump assembly includes a water pump component and a water channel component, wherein the rotating shaft of the water pump component and the rotating shaft hole of the water channel component are prone to interference, causing the rotating shaft friction of the water pump component to increase, thereby causing the occurrence of failures. Among them, the reason for the interference of the rotating shaft is that the sealing ring is deformed during the assembly of the water pump component, and directly tightening the bolts in sequence causes the water pump component to tilt. However, after the water pump assembly is assembled, the water pump is in a closed state, and the shaft deflection of the rotating shaft cannot be directly obtained to avoid the occurrence of failures.

[0003] Therefore, how to accurately obtain the shaft deflection when the water pump is in a closed state becomes a problem to be solved. Summary of the invention

[0004] Based on this, it is necessary to provide a method, device, computer equipment, computer-readable storage medium and computer program product for determining the axial deflection of a water pump shaft to address the technical problem that the axial deflection of the shaft cannot be accurately obtained when the water pump is in a closed state.

[0005] In a first aspect, the present application provides a method for determining the shaft deflection of a water pump shaft, comprising:

[0006] Obtaining a first strain value of a rotating shaft of a water pump to be processed before assembly and a second strain value after assembly;

[0007] Based on the first strain amount and the second strain amount, obtaining a strain amount difference;

[0008] The shaft deflection of the water pump to be processed is obtained based on the conversion coefficient of the shaft of the water pump to be processed and the strain difference obtained in advance; the conversion coefficient is used to characterize the conversion relationship between the shaft deflection and the strain of the shaft.

[0009] In one embodiment, the first strain and the second strain both include strains in the horizontal direction and strains in the vertical direction; the strain difference includes a first strain difference in the horizontal direction and a second strain difference in the vertical direction, and the conversion coefficient includes a first conversion coefficient in the horizontal direction and a second conversion coefficient in the vertical direction; the shaft misalignment of the water pump to be treated is obtained based on the conversion coefficient of the rotating shaft of the water pump to be treated and the strain difference obtained in advance, including: obtaining the first shaft misalignment of the water pump to be treated in the horizontal direction according to the first conversion coefficient and the first strain difference in the horizontal direction; obtaining the second shaft misalignment of the water pump to be treated in the vertical direction according to the second conversion coefficient and the second strain difference in the vertical direction; and fusing the first shaft misalignment and the second shaft misalignment to obtain the shaft misalignment of the water pump to be treated.

[0010] In one of the embodiments, the conversion coefficient of the rotating shaft of the water pump to be treated is determined by: measuring the strain of the rotating shaft under multiple preset shaft deflections; and determining the conversion coefficient of the rotating shaft of the water pump to be treated based on each preset shaft deflection and the corresponding strain.

[0011] In one of the embodiments, the conversion coefficient of the rotating shaft of the water pump to be processed is determined according to each preset shaft misalignment and the corresponding strain, including: taking each preset shaft misalignment and the corresponding strain as a group of data to obtain multiple groups of data; and fitting the conversion coefficient according to the multiple groups of data.

[0012] In one of the embodiments, obtaining the first strain value of the rotating shaft of the water pump to be treated before assembly and the second strain value after assembly includes: determining the stress test point of the rotating shaft of the water pump to be treated; before and after assembling the rotating shaft of the water pump to be treated, applying pressure to the rotating shaft at the stress test point, respectively, to obtain the first strain value and the second strain value.

[0013] In one of the embodiments, after obtaining the shaft misalignment of the water pump to be treated based on the conversion coefficient of the rotating shaft of the water pump to be treated and the strain difference obtained in advance, it also includes: obtaining a shaft misalignment threshold; and determining that the assembly condition of the water pump to be treated is qualified when the shaft misalignment of the water pump to be treated is greater than the shaft misalignment threshold.

[0014] In a second aspect, the present application further provides a device for determining the shaft deflection of a water pump shaft, comprising:

[0015] A data acquisition module, used to acquire a first strain value of a rotating shaft of a water pump to be processed before assembly and a second strain value after assembly;

[0016] A data processing module, configured to obtain a strain difference based on the first strain and the second strain;

[0017] The target quantity determination module is used to obtain the shaft deflection of the water pump to be processed based on the conversion coefficient of the shaft of the water pump to be processed and the strain difference obtained in advance; the conversion coefficient is used to characterize the conversion relationship between the shaft deflection of the shaft and the strain.

[0018] In a third aspect, the present application further provides a computer device, the computer device comprising a memory and a processor, the memory storing a computer program, and the processor implementing the following steps when executing the computer program:

[0019] Obtaining a first strain value of a rotating shaft of a water pump to be processed before assembly and a second strain value after assembly;

[0020] Based on the first strain amount and the second strain amount, obtaining a strain amount difference;

[0021] The shaft deflection of the water pump to be processed is obtained based on the conversion coefficient of the shaft of the water pump to be processed and the strain difference obtained in advance; the conversion coefficient is used to characterize the conversion relationship between the shaft deflection and the strain of the shaft.

[0022] In a fourth aspect, the present application further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the following steps are implemented:

[0023] Obtaining a first strain value of a rotating shaft of a water pump to be processed before assembly and a second strain value after assembly;

[0024] Based on the first strain amount and the second strain amount, obtaining a strain amount difference;

[0025] The shaft deflection of the water pump to be processed is obtained based on the conversion coefficient of the shaft of the water pump to be processed and the strain difference obtained in advance; the conversion coefficient is used to characterize the conversion relationship between the shaft deflection and the strain of the shaft.

[0026] In a fifth aspect, the present application further provides a computer program product, the computer program product comprising a computer program, which implements the following steps when executed by a processor:

[0027] Obtaining a first strain value of a rotating shaft of a water pump to be processed before assembly and a second strain value after assembly;

[0028] Based on the first strain amount and the second strain amount, obtaining a strain amount difference;

[0029] The shaft deflection of the water pump to be processed is obtained based on the conversion coefficient of the shaft of the water pump to be processed and the strain difference obtained in advance; the conversion coefficient is used to characterize the conversion relationship between the shaft deflection and the strain of the shaft.

[0030] The above-mentioned method, device, computer equipment, storage medium and computer program product for determining the axial deflection of the rotating shaft of the water pump have the following beneficial effects in the process of determining the axial deflection of the rotating shaft of the water pump: first, the first strain of the rotating shaft of the water pump to be processed before assembly and the second strain after assembly are obtained; then, based on the first strain and the second strain, the strain difference is obtained; finally, the axial deflection of the water pump to be processed is obtained according to the conversion coefficient of the rotating shaft of the water pump to be processed and the strain difference obtained in advance; the conversion coefficient is used to characterize the conversion relationship between the axial deflection and the strain of the rotating shaft. In the above process, by measuring and comparing the strain before and after assembly, the deformation and deviation that may occur in the assembly process can be effectively identified; by calculating the difference between the first strain and the second strain, the deformation of the rotating shaft of the water pump during the assembly process can be obtained; the axial deflection finally calculated according to the strain difference and the conversion coefficient has a high accuracy, and the above process is carried out when the water pump is in a closed state, so it can ensure that the axial deflection of the rotating shaft is accurately obtained when the water pump is in a closed state. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related technologies, the drawings required for use in the embodiments or the related technical descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 It is a schematic flow chart of a method for determining the shaft deflection of a water pump shaft in one embodiment;

[0033] Figure 2 It is a schematic flow chart of the steps of determining the shaft deflection amount of a water pump shaft in one embodiment;

[0034] Figure 3 A schematic diagram of the installation structure of a detection fixture and a water pump assembly in one embodiment;

[0035] Figure 4 A schematic diagram of a detection structure of a water pump assembly in one embodiment;

[0036] Figure 5 A schematic diagram of test points of a method for determining the shaft deflection of a water pump shaft in one embodiment;

[0037] Figure 6 A schematic diagram of a process for measuring strain in one embodiment;

[0038] Figure 7 is a schematic diagram of the Wheatstone bridge principle in one embodiment;

[0039] Figure 8 is a schematic diagram of bolt distribution in one embodiment;

[0040] Fig. 9 A schematic diagram of a stress test structure in one embodiment;

[0041] Fig.10 is a scatter diagram of stress test directions in one embodiment;

[0042] Fig.11 is a schematic diagram of the change of shaft deflection in different directions in one embodiment;

[0043] Fig.12 is a schematic diagram of the change of the shaft deflection amount in one embodiment;

[0044] Fig.13 is a schematic diagram of a shaft deflection measurement device in one embodiment;

[0045] Fig.14 It is a structural block diagram of a device for determining the shaft deflection of a water pump shaft in one embodiment;

[0046] Fig.15 FIG. 4 is a diagram showing the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0048] In one embodiment, Figure 1 As shown, a method for determining the shaft deflection of a water pump shaft is provided. This embodiment uses the method applied to a terminal as an example for illustration. It can be understood that the method can also be applied to a server, and can also be applied to a system including a terminal and a server, and is implemented through the interaction between the terminal and the server. In this embodiment, the method includes the following steps:

[0049] Step S102, obtaining a first strain value of the rotating shaft of the water pump to be processed before assembly and a second strain value after assembly.

[0050] Among them, the water pump to be processed refers to the water pump that needs to be tested for shaft deflection; the rotating shaft is a key component of the water pump, mainly used to transmit power; the first strain value refers to the data obtained by the strain value test of the rotating shaft before assembly; the second strain value refers to the data obtained by the strain value test of the rotating shaft after assembly.

[0051] Optionally, the first strain amount may reflect the state of the rotating shaft when it is not affected by an external device; the second strain amount may reflect the impact of the assembly process on the rotating shaft; in addition, the strain amount may be tested using a strain gauge or a sensor.

[0052] Furthermore, in order to ensure the validity and accuracy of the first strain variable and the second strain variable finally measured, it is necessary to ensure that the measurement process is under the same environmental conditions.

[0053] Step S104: obtaining a strain difference based on the first strain and the second strain.

[0054] Among them, the strain difference refers to the difference between the strains of the rotating shaft of the water pump to be processed before and after assembly; the process of obtaining the strain difference can be to use simple subtraction to directly calculate the difference between the first strain and the second strain; if the first strain or the second strain has multiple values, the values ​​of multiple first strain or second strain can also be processed first, and then the strain difference can be calculated.

[0055] Step S106, obtaining the shaft deflection of the water pump to be processed based on the conversion coefficient and strain difference of the rotating shaft of the water pump to be processed obtained in advance; the conversion coefficient is used to characterize the conversion relationship between the shaft deflection and the strain of the rotating shaft.

[0056] The conversion coefficient refers to the value that relates the axial deflection to the strain; the axial deflection refers to the degree of inclination or distortion of the rotating shaft.

[0057] More often, the conversion coefficient is usually obtained through multiple experiments to reflect the strain characteristics of the shaft material; the shaft deflection can determine whether the assembly of the water pump to be processed is within an acceptable error range.

[0058] In the above method for determining the axial deflection of the rotating shaft of the water pump, the first strain value of the rotating shaft of the water pump to be processed before assembly and the second strain value after assembly are first obtained; then, based on the first strain value and the second strain value, the strain value difference is obtained; finally, the axial deflection of the water pump to be processed is obtained according to the conversion coefficient of the rotating shaft of the water pump to be processed and the strain value difference obtained in advance; the conversion coefficient is used to characterize the conversion relationship between the axial deflection value and the strain value of the rotating shaft. In the above process, by measuring and comparing the strain values ​​before and after assembly, the deformation and deviation that may occur during the assembly process can be effectively identified; by calculating the difference between the first strain value and the second strain value, the deformation of the rotating shaft of the water pump during the assembly process can be obtained; the axial deflection value finally calculated according to the strain value difference and the conversion coefficient has a high accuracy, and the above process is carried out when the water pump is in a closed state, so it can be ensured that the axial deflection value of the rotating shaft is accurately obtained when the water pump is in a closed state.

[0059] In an exemplary embodiment, the first strain and the second strain both include strains in the horizontal direction and strains in the vertical direction; the strain difference includes a first strain difference in the horizontal direction and a second strain difference in the vertical direction, and the conversion coefficient includes a first conversion coefficient in the horizontal direction and a second conversion coefficient in the vertical direction; based on the conversion coefficient and the strain difference of the rotating shaft of the water pump to be treated obtained in advance, the shaft misalignment of the water pump to be treated is obtained, including: based on the first conversion coefficient and the first strain difference in the horizontal direction, obtaining the first shaft misalignment of the water pump to be treated in the horizontal direction; based on the second conversion coefficient and the second strain difference in the vertical direction, obtaining the second shaft misalignment of the water pump to be treated in the vertical direction; the first shaft misalignment and the second shaft misalignment are fused to obtain the shaft misalignment of the water pump to be treated.

[0060] Among them, the first strain difference in the horizontal direction is calculated by the first strain in the horizontal direction and the second strain in the horizontal direction; the second strain difference in the vertical direction is calculated by the first strain in the vertical direction and the second strain in the vertical direction; the first conversion coefficient in the horizontal direction is the coefficient used to connect the first strain difference in the horizontal direction and the first axis deviation in the horizontal direction; the second conversion coefficient in the vertical direction is the coefficient used to connect the second strain difference in the vertical direction and the second axis deviation in the vertical direction.

[0061] More preferably, the first axis deflection is used to characterize the degree of inclination of the rotating shaft of the water pump to be processed in the horizontal direction; the second axis deflection is used to characterize the degree of inclination of the rotating shaft of the water pump to be processed in the vertical direction; the fusion processing can be through the vector synthesis method.

[0062] In this embodiment, the axial misalignment of the shaft of the water pump to be treated is quantified through accurate strain calculation, which can ensure the normal operation of the water pump to be treated. In addition, the process of obtaining each strain and conversion coefficient provides data support for the final calculation of the axial misalignment, ensuring the accuracy and reliability of the analysis.

[0063] Furthermore, in one embodiment, the conversion coefficient of the rotating shaft of the water pump to be treated is determined by: measuring the strain of the rotating shaft under multiple preset shaft deflections; and determining the conversion coefficient of the rotating shaft of the water pump to be treated based on each preset shaft deflection and the corresponding strain.

[0064] Among them, the conversion coefficient refers to the proportional factor that converts the shaft deflection into the strain; the preset shaft deflection refers to the data known in the experiment; the strain refers to the strain value measured under yield, load or deformation conditions of the shaft, which can characterize the degree of deformation of the shaft.

[0065] As an example, the process of determining the conversion coefficient can be: first, apply different known shaft misalignment to the rotating shaft, and measure the strain corresponding to each shaft misalignment respectively, and then use linear regression or other fitting methods to analyze the relationship between the strain and the shaft misalignment, and then obtain the conversion coefficient.

[0066] In this embodiment, the conversion coefficient of the shaft of the water pump to be treated can be determined by measuring the strain of the shaft under multiple preset shaft misalignment amounts. This process not only helps to quantify the performance of the shaft, but also establishes a solid data foundation for subsequent shaft misalignment analysis. Moreover, the accuracy of the conversion coefficient directly affects the operating stability and overall efficiency of the water pump to be treated. Therefore, the conversion coefficient obtained through the above process has high accuracy, which helps to ensure the stable operation of the water pump to be treated.

[0067] In one embodiment, the conversion coefficient of the rotating shaft of the water pump to be processed is determined according to each preset shaft misalignment and the corresponding strain, including: taking each preset shaft misalignment and the corresponding strain as a set of data to obtain multiple sets of data; and fitting the conversion coefficient according to the multiple sets of data.

[0068] Among them, a set of data includes a preset shaft misalignment and its corresponding strain variable. The collection of multiple sets of data can comprehensively display the performance of the shaft; fitting can be to use statistical methods, such as linear regression, polynomial regression, etc. to establish a mathematical relationship between the strain variable and the shaft misalignment, select a suitable regression algorithm, and perform fitting based on the collected data.

[0069] In this embodiment, by taking each preset shaft misalignment and the corresponding strain as a set of data, and through the collection and analysis of multiple sets of data, the conversion coefficient is finally obtained through fitting, which can ensure the establishment of an accurate quantitative relationship between the strain and the shaft misalignment under specific working conditions, thereby obtaining a more accurate conversion coefficient.

[0070] Furthermore, in one embodiment, obtaining a first strain value of the rotating shaft of the water pump to be treated before assembly and a second strain value after assembly includes: determining a stress test point of the rotating shaft of the water pump to be treated; applying pressure to the rotating shaft at the stress test point before and after assembly of the rotating shaft of the water pump to be treated, respectively, to obtain the first strain value and the second strain value.

[0071] The stress test point refers to a predefined position on the shaft of the water pump to be treated for stress measurement; the process of applying pressure can be achieved by using a compression device or a standardized pressure applying device.

[0072] In this embodiment, by selecting reasonable stress test points, effective measurement can be ensured in the key areas of the shaft, thereby accurately reflecting the stress distribution and deformation of the shaft; the process of applying pressure simulates the load that the shaft bears under actual working conditions, thereby obtaining the true strain amount and further obtaining the shaft deflection amount.

[0073] In an exemplary embodiment, after obtaining the shaft misalignment of the water pump to be treated based on the conversion coefficient and strain difference of the rotating shaft of the water pump to be treated that are obtained in advance, it also includes: obtaining a shaft misalignment threshold; when the shaft misalignment of the water pump to be treated is greater than the shaft misalignment threshold, determining that the assembly condition of the water pump to be treated is qualified.

[0074] Among them, the shaft misalignment threshold refers to a pre-set maximum allowable shaft misalignment. Exceeding the shaft misalignment threshold indicates that the state of the rotating shaft is abnormal or does not meet the standards; the assembly condition refers to the overall component status of the water pump, including the assembly accuracy, operating efficiency and functional integrity of each part.

[0075] In this embodiment, by obtaining the shaft misalignment threshold, the overall performance of the water pump to be treated can be evaluated, which is crucial to ensuring the reliable operation and extending the service life of the water pump. Ensuring the relationship between the shaft misalignment and the shaft misalignment threshold can ensure the effectiveness and safety of the water pump during the entire operation process, thereby avoiding the occurrence of failures or accidents.

[0076] The present application provides a method for determining the amount of shaft deflection of a water pump shaft. In order to better understand the process of the above method for determining the amount of shaft deflection of a water pump shaft, Figure 2 As shown, the specific process of the method for determining the shaft deflection of the water pump shaft of the present application is described in detail below, including the following steps:

[0077] Step S202, measuring a first strain value before the water pump to be processed is assembled.

[0078] Before step S202, it is necessary to design and manufacture the inspection jig using CATIA (computer-aided three-dimensional interactive application) software, such as Figure 3 As shown, fix the water pump assembly (water pump to be treated) on the inspection fixture to ensure that the rotating shaft of the water pump assembly is in a vertical position with the horizontal line. The micrometer measuring head and the force rod are on the same plane, perpendicular to the surface of the rotating shaft and in contact. Figure 4 is a schematic diagram of the detection structure of the water pump assembly. Figure 5As shown, when the water pump assembly is tilted, the shaft end has the largest shaft deflection and the shaft bottom has the largest strain, so the shaft end is selected as the shaft deflection test point, that is, the test point for the first shaft deflection and the second shaft deflection, and the shaft bottom is selected as the stress test point, that is, the test point for the first strain and the second strain. The wires of the strain gauge can be connected to the data acquisition instrument to measure the first strain and record the results.

[0079] More specifically, the test flow chart for the first dependent variable is as follows: Figure 6 As shown, it includes degreasing: wipe the stains with degreasing agent or alcohol on the stress test point with absorbent cotton until the dirt disappears completely; if the degreasing is insufficient, the strain gauge will easily fall off; stick the strain gauge: stick the strain gauge at the stress test point and press for 1 minute; in addition, the strain gauge cannot be pasted crookedly, and the front and back of the strain gauge need to be distinguished; the amount of adhesive is the amount of adhesive that is required to stick the entire strain gauge to the object, and the amount of adhesive that does not overflow after the strain gauge is pasted; apply protective glue: apply protective glue on the strain gauge and its wires to prevent damage to the strain gauge during cutting. The protective glue needs to be fully solidified before measurement, and generally needs to be left for more than 8 hours; measure the strain value: connect the wires of the strain gauge to the data acquisition instrument for measurement and record the results; the measurement principle of the strain value is as follows: the strain gauge is a sensor for measuring strain, and its resistance value is linearly related to the strain it produces, so the measurement of the strain value is converted into the measurement of the resistance value, through Figure 7 The measurement principle shown is as follows: The Wheatstone bridge balance principle can measure the change in the resistance of the strain gauge, thereby measuring the strain value ε, where the resistors R1, R2, R3, and R4 are four bridge arms, and U BD is the output voltage, U AC is the input voltage, the current flowing through resistor R1 is:

[0080]

[0081] Therefore, the voltage across the resistor R1 can be calculated as:

[0082]

[0083] Similarly, the voltage across resistor R4 is:

[0084]

[0085] Therefore, the output voltage of terminals B and D is:

[0086]

[0087] It can be seen from the above formula that when R1=R2=R3=R4, the output voltage U BD is 0, the Wheatstone Bridge is in equilibrium.

[0088] Step S204, assembling the water pump to be processed.

[0089] The assembly process is applicable to single-axis or multi-axis tightening conditions. Taking double-axis tightening as an example, the specific bolt distribution is as follows: Figure 8 The specific steps are: pre-tighten bolts A and B at the same time. (Torque: 20Nm); pre-tighten bolts C→bolt D→bolt E in sequence. (Torque: 20Nm); tighten bolts A→bolt B→bolt C→bolt D→bolt E→bolt A in sequence (Torque: 24Nm).

[0090] Step S206, after the water pump to be processed is assembled, measure the second strain.

[0091] The measurement method of the second strain variable is the same as that of the first strain variable, both based on Figure 7 Complete the measurement.

[0092] Step S208, calculating the difference between the first strain and the second strain.

[0093] The difference between the first strain and the second strain in the two directions is calculated to obtain the difference between the first strain and the second strain in the two directions.

[0094] Step S210, determining a first axis deflection amount and a second axis deflection amount.

[0095] Each time the axis deflection is changed, the strain will have a corresponding value. Record about 10 data points and combine them with the following: Fig. 9 The structure diagram shown and Fig.10 From the scatter plot shown, the conversion coefficient K between the axial deflection and the strain value in this direction can be obtained, and its relationship with the axial deflection and the strain value is: axial deflection y=K*strain value.

[0096] Step S212, determining the shaft deflection amount of the water pump to be processed according to the first shaft deflection amount and the second shaft deflection amount.

[0097] Among them, combined Figures 11 to 13 , Fig.11 This is a graph showing the change in axis deflection in the XY direction during tightening operations; Fig.12 This is the change diagram of the total shaft deflection (shaft deflection) during tightening operation, shaft deflection = (shaft deflection x^2 + shaft deflection y^2)^0.5; Fig.13 It is a schematic diagram of the shaft deflection test device, which also includes strain gauges, shaft deflection test points, strain test points, the location of applying pressure F, as well as the relationship between the water pump assembly, the strain data acquisition instrument and the data analysis.

[0098] Furthermore, after obtaining the shaft misalignment, it is necessary to confirm whether the shaft misalignment exceeds the standard. If the shaft misalignment is less than 202um, the water pump assembly to be processed is judged to be qualified. If the shaft misalignment is greater than or equal to 202um, the water pump assembly to be processed is judged to be unqualified.

[0099] Through the above embodiments, by measuring and comparing the strain before and after assembly, the deformation and deviation that may occur during the assembly process can be effectively identified; by calculating the difference between the first strain and the second strain, the deformation of the water pump shaft during the assembly process can be obtained; the shaft misalignment amount finally calculated based on the strain difference and the conversion coefficient has a high accuracy, and the above process is performed when the water pump is in a closed state, so it can ensure that the shaft misalignment amount is accurately obtained when the water pump is in a closed state.

[0100] It should be understood that, although the various steps in the flowcharts involved in the above-mentioned embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-mentioned embodiments can include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0101] Based on the same inventive concept, the embodiment of the present application also provides a device for determining the amount of shaft deflection of a water pump shaft for implementing the method for determining the amount of shaft deflection of a water pump shaft involved above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations in the embodiments of one or more devices for determining the amount of shaft deflection of a water pump shaft provided below can refer to the limitations of the method for determining the amount of shaft deflection of a water pump shaft above, and will not be repeated here.

[0102] In an exemplary embodiment, Fig.14 As shown, a device for determining the shaft deflection of a water pump shaft is provided, comprising: a data acquisition module 1401, a data processing module 1402 and a target amount determination module 1403, wherein:

[0103] The data acquisition module 1401 is used to acquire the first strain value of the rotating shaft of the water pump to be processed before assembly and the second strain value after assembly;

[0104] A data processing module 1402 is used to obtain a strain variable difference based on the first strain variable and the second strain variable;

[0105] The target quantity determination module 1403 is used to obtain the shaft deflection of the water pump to be processed based on the conversion coefficient and strain difference of the shaft of the water pump to be processed obtained in advance; the conversion coefficient is used to characterize the conversion relationship between the shaft deflection and strain of the shaft.

[0106] Furthermore, in one embodiment, the target quantity determination module 1403 is also used to obtain a first axial deviation of the water pump to be processed in the horizontal direction based on a first conversion coefficient and a first strain difference in the horizontal direction; to obtain a second axial deviation of the water pump to be processed in the vertical direction based on a second conversion coefficient and a second strain difference in the vertical direction; and to fuse the first axial deviation and the second axial deviation to obtain the axial deviation of the water pump to be processed.

[0107] Furthermore, in one embodiment, the target quantity determination module 1403 is also used to measure the strain of the rotating shaft under multiple preset shaft deflection amounts; and determine the conversion coefficient of the rotating shaft of the water pump to be processed based on each preset shaft deflection amount and the corresponding strain amount.

[0108] Furthermore, in one embodiment, the target quantity determination module 1403 is also used to obtain multiple sets of data by taking each preset shaft deviation amount and the corresponding strain amount as a set of data; and to obtain conversion coefficients by fitting according to the multiple sets of data.

[0109] Furthermore, in one embodiment, the data acquisition module 1401 is also used to determine the stress test points of the rotating shaft of the water pump to be processed; before and after the rotating shaft of the water pump to be processed is assembled, pressure is applied to the rotating shaft at the stress test points to obtain the first strain value and the second strain value.

[0110] Furthermore, in one embodiment, the target quantity determination module 1403 is also used to obtain a shaft misalignment threshold; when the shaft misalignment of the water pump to be processed is greater than the shaft misalignment threshold, it is determined that the assembly condition of the water pump to be processed is qualified.

[0111] Each module in the above-mentioned device for determining the shaft deflection of the water pump shaft can be implemented in whole or in part by software, hardware, or a combination thereof. Each of the above-mentioned modules can be embedded in or independent of a processor in a computer device in the form of hardware, or can be stored in a memory in a computer device in the form of software, so that the processor can call and execute the operations corresponding to each of the above modules.

[0112] In an exemplary embodiment, a computer device is provided. The computer device may be a server, and its internal structure diagram may be as shown in FIG. Fig.15As shown. The computer device includes a processor, a memory, an input / output interface (Input / Output, referred to as I / O) and a communication interface. The processor, the memory and the input / output interface are connected through a system bus, and the communication interface is connected to the system bus through the input / output interface. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store the shaft deflection determination data of the water pump shaft. The input / output interface of the computer device is used to exchange information between the processor and an external device. The communication interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, a method for determining the shaft deflection of the water pump shaft is implemented.

[0113] Those skilled in the art will understand that Fig.15 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0114] In an exemplary embodiment, a computer device is provided, including a memory and a processor, wherein a computer program is stored in the memory, and the processor implements the steps in the above-mentioned method embodiments when executing the computer program.

[0115] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps in the above-mentioned method embodiments are implemented.

[0116] In one embodiment, a computer program product is provided, including a computer program, which implements the steps in the above method embodiments when executed by a processor.

[0117] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant regulations.

[0118] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., but are not limited to this.

[0119] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0120] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A method for determining the shaft deflection of a water pump shaft, characterized in that: The method comprises: Obtaining a first strain value of a rotating shaft of a water pump to be processed before assembly and a second strain value after assembly; Based on the first strain amount and the second strain amount, obtaining a strain amount difference; The shaft deflection of the water pump to be processed is obtained based on the conversion coefficient of the shaft of the water pump to be processed and the strain difference obtained in advance; the conversion coefficient is used to characterize the conversion relationship between the shaft deflection and the strain of the shaft.

2. The method according to claim 1, characterized in that The first strain amount and the second strain amount both include a strain amount in a horizontal direction and a strain amount in a vertical direction; the strain amount difference includes a first strain amount difference in a horizontal direction and a second strain amount difference in a vertical direction, and the conversion coefficient includes a first conversion coefficient in a horizontal direction and a second conversion coefficient in a vertical direction; The step of obtaining the shaft deflection of the water pump to be processed based on the conversion coefficient of the rotating shaft of the water pump to be processed and the strain difference value obtained in advance comprises: According to the first conversion coefficient and the difference between the first strain amount in the horizontal direction, obtaining the first shaft deviation amount of the water pump to be processed in the horizontal direction; According to the second conversion coefficient and the difference between the second strain amount in the vertical direction, obtaining the second axial deflection of the water pump to be processed in the vertical direction; The first shaft deflection amount and the second shaft deflection amount are fused to obtain the shaft deflection amount of the water pump to be processed.

3. The method according to claim 1, characterized in that The conversion coefficient of the rotating shaft of the water pump to be treated is determined by the following method: Measuring the strain of the rotating shaft under multiple preset shaft deflection amounts; According to each preset shaft deflection amount and the corresponding strain amount, the conversion coefficient of the rotating shaft of the water pump to be processed is determined.

4. The method according to claim 3, characterized in that The step of determining the conversion coefficient of the rotating shaft of the water pump to be processed according to each preset shaft deflection amount and the corresponding strain amount includes: Taking each preset shaft deflection amount and the corresponding strain amount as a set of data, multiple sets of data are obtained; The conversion coefficient is obtained by fitting according to the multiple sets of data.

5. The method according to claim 1, characterized in that The step of obtaining a first strain value of the rotating shaft of the water pump to be processed before assembly and a second strain value after assembly includes: Determine the stress test point of the rotating shaft of the water pump to be processed; Before and after the rotating shaft of the water pump to be processed is assembled, pressure is applied to the rotating shaft at the stress test point to obtain the first strain value and the second strain value.

6. The method according to claim 1, characterized in that After obtaining the shaft deflection amount of the water pump to be processed according to the conversion coefficient of the rotating shaft of the water pump to be processed and the strain amount difference value obtained in advance, the method further includes: Get the axis deflection threshold; When the shaft deflection amount of the water pump to be processed is greater than the shaft deflection amount threshold, it is determined that the assembly condition of the water pump to be processed is qualified.

7. A device for determining the amount of shaft deflection of a water pump shaft, characterized in that: The device comprises: A data acquisition module, used to acquire a first strain value of a rotating shaft of a water pump to be processed before assembly and a second strain value after assembly; A data processing module, configured to obtain a strain difference based on the first strain and the second strain; The target quantity determination module is used to obtain the shaft deflection of the water pump to be processed based on the conversion coefficient of the shaft of the water pump to be processed and the strain difference obtained in advance; the conversion coefficient is used to characterize the conversion relationship between the shaft deflection of the shaft and the strain.

8. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 6 are implemented.

9. A computer-readable storage medium having a computer program stored thereon, 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 6 are implemented.

10. A computer program product, comprising 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 6 are implemented.

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