Gear fault detection method, device, medium, equipment and system

Abstract

The present disclosure relates to a gear fault detection method, device, medium, equipment and system. The method comprises: acquiring a first angular acceleration signal of a rotating shaft of a second gear when a first gear rotates counterclockwise at a first preset rotating speed and the torque of the second gear is a first preset torque; acquiring a second angular acceleration signal of the rotating shaft of the second gear when the first gear rotates clockwise at a second preset rotating speed and the torque of the second gear is a second preset torque; and performing shaft separation signal processing on the first angular acceleration signal and the second angular acceleration signal respectively to obtain a first time domain signal and a second time domain signal of a rotating shaft on which the gear to be detected is located. The technical solution provided by the present disclosure can detect the knock damage on the gear meshing surface, especially the slight knock damage on the gear meshing surface, so as to improve the accuracy of the gear fault detection method.

Description

Technical Field

[0001] This disclosure relates to the field of gear fault detection technology, and in particular to a gear fault detection method, apparatus, medium, equipment and system. Background Technology

[0002] Existing gear fault detection methods typically use angle sensors to detect the offset angle signal of a standard wheel, and then use this offset angle signal to determine whether the gear is faulty. However, this method usually only detects gears with large impact damage, and cannot accurately detect minor impact damage on the gear meshing surface. Therefore, existing gear fault detection methods suffer from low accuracy. Summary of the Invention

[0003] To address the aforementioned technical problems, this disclosure provides a gear fault detection method, apparatus, medium, equipment, and system.

[0004] This disclosure provides a gear fault detection method, including:

[0005] The first angular acceleration signal of the second gear rotation shaft is obtained during the process of the first gear rotating counterclockwise at a first preset speed and when the torque of the second gear is the first preset torque;

[0006] Acquire the second angular acceleration signal of the second gear rotation shaft during the process of the first gear rotating clockwise at a second preset speed, and when the torque of the second gear is the second preset torque;

[0007] The first angular acceleration signal and the second angular acceleration signal are respectively processed by shaft separation signal to obtain the first time domain signal and the second time domain signal of the rotating shaft where the gear under test is located;

[0008] Based on the first time domain signal and / or the second time domain signal, it is determined that the meshing surface of the gear under test has dents or scratches.

[0009] Wherein, the first gear is the gear to be tested, and the second gear is a standard gear; or, the first gear is the standard gear, and the second gear is the gear to be tested.

[0010] In some embodiments, determining that the meshing surface of the gear under test has dents or scratches based on the first time-domain signal and / or the second time-domain signal includes:

[0011] Obtain the peak value and / or root mean square value of the first time-domain signal, and the peak value and / or root mean square value of the second time-domain signal;

[0012] When the peak value and / or root mean square value of the first time domain signal are greater than the first preset signal threshold, and / or the peak value and / or root mean square value of the second time domain signal are greater than the second preset signal threshold, it is determined that the meshing surface of the gear under test has dents or scratches.

[0013] In some embodiments, the method further includes:

[0014] Based on the first time-domain signal and the second time-domain signal, determine the first-order spectrum corresponding to the first time-domain signal and the second-order spectrum corresponding to the second time-domain signal;

[0015] Based on the first-order spectrum and / or the second-order spectrum, the fault type of the gear under test is determined.

[0016] In some embodiments, determining the first-order spectrum corresponding to the first time-domain signal and the second-order spectrum corresponding to the second time-domain signal based on the first time-domain signal and the second time-domain signal includes:

[0017] The first time-domain signal and the second time-domain signal are respectively subjected to Fourier transform processing to obtain the first-order spectrum and the second-order spectrum.

[0018] In some embodiments, determining the fault type of the gear under test based on the first-order spectrum and / or the second-order spectrum includes:

[0019] Based on the first order spectrum, the first vibration noise value during the meshing process between the gear under test and the standard gear is determined;

[0020] Based on the second-order spectrum, the second vibration noise value during the meshing process between the gear under test and the standard gear is determined;

[0021] When the first vibration noise value is greater than the first preset noise threshold, and / or the second vibration noise value is greater than the second preset noise threshold, the fault type of the gear under test is determined to be at least one of the following: gear parameter deviation fault, tooth surface concavity and radial runout error fault, and regular pitch deviation fault.

[0022] The first vibration noise value and the second vibration noise value both include the values ​​of the main frequency, harmonic frequency and fractional frequency order during the meshing process between the gear under test and the standard gear.

[0023] In some embodiments, determining the fault type of the gear under test based on the first-order spectrum and / or the second-order spectrum includes:

[0024] When at least some order data in the first order spectrum is greater than the order data in the first preset curve, and / or at least some order data in the second order spectrum is greater than the order data in the second preset curve, the fault type of the gear under test is determined to be a ripple fault and / or a rust spot fault.

[0025] This disclosure provides a gear fault detection device, comprising:

[0026] An angular acceleration signal acquisition module is used to acquire a first angular acceleration signal of the second gear rotation shaft during the process of the first gear rotating counterclockwise at a first preset speed and when the torque of the second gear is a first preset torque; and to acquire a second angular acceleration signal of the second gear rotation shaft during the process of the first gear rotating clockwise at a second preset speed and when the torque of the second gear is a second preset torque.

[0027] The time-domain signal determination module is used to perform shaft separation signal processing on the first angular acceleration signal and the second angular acceleration signal to obtain the first time-domain signal and the second time-domain signal of the rotating shaft where the gear under test is located;

[0028] The fault type determination module is used to determine, based on the first time domain signal and / or the second time domain signal, that the meshing surface of the gear under test has dents or scratches.

[0029] Wherein, the first gear is the gear to be tested, and the second gear is a standard gear; or, the first gear is the standard gear, and the second gear is the gear to be tested.

[0030] This disclosure provides a computer-readable storage medium storing a program or instructions that cause a computer to perform the steps of the gear fault detection method described above.

[0031] This public provides an electronic device, including:

[0032] One or more processors;

[0033] Memory, used to store one or more programs or instructions;

[0034] The processor executes the steps of the method described above by calling programs or instructions stored in the memory.

[0035] This disclosure provides a gear fault detection system, including an angular acceleration signal sensor and a controller;

[0036] The angular acceleration signal sensor is used to detect the angular acceleration signal during the meshing process between the standard gear and the gear under test;

[0037] The controller is used to perform the steps of the gear fault detection method described above.

[0038] The technical solution provided in this disclosure has the following advantages compared with the prior art:

[0039] The technical solution provided in this disclosure acquires the first angular acceleration signal of the second gear's rotation axis during the counterclockwise rotation of the first gear at a first preset speed and when the torque of the second gear is the first preset torque. It also acquires the second angular acceleration signal of the second gear's rotation axis during the clockwise rotation of the first gear at a second preset speed and when the torque of the second gear is the second preset torque. This requires the gear under test to be detected twice, in both forward and reverse directions, to acquire the first and second angular acceleration signals respectively. The first and second angular acceleration signals are then processed by shaft separation signal processing to obtain the first time-domain signal and the second time-domain signal of the rotation axis where the gear under test is located. Based on the first time-domain signal and / or the second time-domain signal, it is determined that the meshing surface of the gear under test has dents or scratches. Since the angular acceleration signal includes both the angular acceleration signal of the gear under test and the angular acceleration signal of the standard gear, shaft separation signal processing is performed on the angular acceleration signal. The resulting first and second time-domain signals both correspond to the time-domain signal of the gear under test. Analysis of the first and / or second time-domain signals directly reflects the fault information of the gear under test, without including fault information of the standard gear. Simultaneously, the first and / or second time-domain signals can detect dents and scratches on the gear meshing surface, especially minor dents and scratches, thereby improving the accuracy of the gear fault detection method. Attached Figure Description

[0040] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0041] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0042] Figure 1 A gear fault detection method provided in this disclosure embodiment;

[0043] Figure 2 This is yet another gear fault detection method provided in the embodiments of the present disclosure;

[0044] Figure 3 This is yet another gear fault detection method provided in the embodiments of the present disclosure;

[0045] Figure 4 This is yet another gear fault detection method provided in the embodiments of the present disclosure;

[0046] Figure 5 A structural block diagram of a gear fault detection device provided in this embodiment of the present disclosure;

[0047] Figure 6 This is a schematic diagram of the hardware structure of an electronic device provided in an embodiment of this disclosure. Detailed Implementation

[0048] To better understand the above-mentioned objectives, features, and advantages of this disclosure, the solutions disclosed herein will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0049] Numerous specific details are set forth in the following description in order to provide a full understanding of this disclosure, but this disclosure may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some, and not all, of the embodiments of this disclosure.

[0050] This disclosure provides a gear fault detection method, which can be executed by a gear fault detection device, which can be implemented in software and / or hardware. Figure 1 A gear fault detection method provided in this disclosure embodiment, such as Figure 1 As shown, the method includes the following steps:

[0051] S110. Obtain the first angular acceleration signal of the second gear rotation shaft during the process of the first gear rotating counterclockwise at a first preset speed and when the torque of the second gear is the first preset torque.

[0052] For example, the first angular acceleration signal of the second gear's rotation shaft can be acquired during the process of the first gear rotating counterclockwise at a first preset speed for at least four rotations, and when the torque of the second gear is the first preset torque. Preferably, for example, the first angular acceleration signal of the second gear's rotation shaft can be acquired during the process of the first gear rotating counterclockwise at a first preset speed for fifty rotations, and when the torque of the second gear is the first preset torque. Wherein, the first gear is the gear to be tested, and the second gear is a standard gear. Alternatively, the first gear is a standard gear, and the second gear is the gear to be tested. Specifically, the first angular acceleration signal of the standard gear's rotation shaft is acquired during the process of the gear to be tested rotating counterclockwise at a first preset speed, and when the torque of the standard gear is the first preset torque. Alternatively, the first angular acceleration signal of the gear to be tested's rotation shaft is acquired during the process of the standard gear rotating counterclockwise at a first preset speed, and when the torque of the gear to be tested is the first preset torque.

[0053] S120. Acquire the second angular acceleration signal of the second gear rotation shaft during the process of the first gear rotating clockwise at the second preset speed and when the torque of the second gear is the second preset torque.

[0054] For example, the second angular acceleration signal of the second gear's rotation shaft can be acquired during the process of the first gear rotating clockwise at least four revolutions at a second preset speed, and when the torque of the second gear is the second preset torque. Preferably, for example, the second angular acceleration signal of the second gear's rotation shaft can be acquired during the process of the first gear rotating clockwise at a second preset speed fifty revolutions, and when the torque of the second gear is the second preset torque. Specifically, the second angular acceleration signal of the rotation shaft of the gear under test can be acquired during the process of the standard gear rotating clockwise at a second preset speed, and when the torque of the gear under test is the second preset torque. Alternatively, the second angular acceleration signal of the rotation shaft of the standard gear can be acquired during the process of the gear under test rotating clockwise at a second preset speed, and when the torque of the standard gear is the second preset torque.

[0055] S130. Perform shaft separation signal processing on the first angular acceleration signal and the second angular acceleration signal respectively to obtain the first time domain signal and the second time domain signal of the rotating shaft where the gear under test is located.

[0056] Specifically, the first angular acceleration signal is processed by shaft separation signal processing to obtain the first time domain signal of the rotating shaft where the gear under test is located; and the second angular acceleration signal is processed by shaft separation signal processing to obtain the second time domain signal of the rotating shaft where the gear under test is located.

[0057] S140. Based on the first time domain signal and / or the second time domain signal, determine that there are impact damages on the meshing surface of the gear under test.

[0058] The technical solution provided in this disclosure acquires the first angular acceleration signal of the second gear's rotation axis during the counterclockwise rotation of the first gear at a first preset speed and when the torque of the second gear is the first preset torque. It also acquires the second angular acceleration signal of the second gear's rotation axis during the clockwise rotation of the first gear at a second preset speed and when the torque of the second gear is the second preset torque. This requires the gear under test to be detected twice, in both forward and reverse directions, to acquire the first and second angular acceleration signals respectively. The first and second angular acceleration signals are then processed by shaft separation signal processing to obtain the first time-domain signal and the second time-domain signal of the rotation axis where the gear under test is located. Based on the first time-domain signal and / or the second time-domain signal, it is determined that the meshing surface of the gear under test has dents or scratches. Since the angular acceleration signal includes both the angular acceleration signal of the gear under test and the angular acceleration signal of the standard gear, shaft separation signal processing is performed on the angular acceleration signal. The resulting first and second time-domain signals both correspond to the time-domain signal of the gear under test. Analysis of the first and / or second time-domain signals directly reflects the fault information of the gear under test, without including fault information of the standard gear. Simultaneously, the first and / or second time-domain signals can detect dents and scratches on the gear meshing surface, especially minor dents and scratches, thereby improving the accuracy of the gear fault detection method.

[0059] In some embodiments, the first gear or the second gear rotates at a speed greater than 60 revolutions per minute, so that the obtained angular acceleration signal can more accurately reflect the fault condition of the gear under test.

[0060] In some embodiments, step S140, determining that the meshing surface of the gear under test has dents based on the first time-domain signal and / or the second time-domain signal, includes:

[0061] Obtain the peak value and / or root mean square value of the first time-domain signal, and the peak value and / or root mean square value of the second time-domain signal.

[0062] When the peak value and / or root mean square value of the first time domain signal are greater than the first preset signal threshold, and / or the peak value and / or root mean square value of the second time domain signal are greater than the second preset signal threshold, it is determined that the meshing surface of the gear under test has dents or scratches.

[0063] The technical solution provided in this disclosure compares the peak value and / or root mean square (RMS) of a first time-domain signal with a first preset signal threshold, and / or the peak value and / or RMS of a second time-domain signal with a second preset signal threshold. When the peak value and / or RMS of the first time-domain signal is greater than the first preset signal threshold, and / or the peak value and / or RMS of the second time-domain signal is greater than the second preset signal threshold, it is determined that the meshing surface of the gear under test has dents or scratches. In this way, dents or scratches on the gear meshing surface, especially minor dents or scratches, can be detected using the first time-domain signal and / or the second time-domain signal, thereby improving the accuracy of the gear fault detection method.

[0064] Figure 2 Another gear fault detection method provided in this disclosure embodiment, such as Figure 2 As shown, the method includes the following steps:

[0065] S110. Obtain the first angular acceleration signal of the second gear rotation shaft during the process of the first gear rotating counterclockwise at a first preset speed and when the torque of the second gear is the first preset torque.

[0066] S120. Acquire the second angular acceleration signal of the second gear rotation shaft during the process of the first gear rotating clockwise at the second preset speed and when the torque of the second gear is the second preset torque.

[0067] S130. Perform shaft separation signal processing on the first angular acceleration signal and the second angular acceleration signal respectively to obtain the first time domain signal and the second time domain signal of the rotating shaft where the gear under test is located.

[0068] S150. Based on the first time-domain signal and the second time-domain signal, determine the first-order spectrum corresponding to the first time-domain signal and the second-order spectrum corresponding to the second time-domain signal.

[0069] S160. Based on the first-order spectrum and / or the second-order spectrum, determine the fault type of the gear under test.

[0070] The technical solution provided in this disclosure acquires the first angular acceleration signal of the second gear's rotation shaft during the counterclockwise rotation of the first gear at a first preset speed and when the torque of the second gear is the first preset torque. It also acquires the second angular acceleration signal of the second gear's rotation shaft during the clockwise rotation of the first gear at a second preset speed and when the torque of the second gear is the second preset torque. This requires the gear under test to be detected twice, in both forward and reverse directions, to acquire the first and second angular acceleration signals respectively. The first and second angular acceleration signals are then processed by shaft separation signal processing to obtain the first and second time-domain signals of the rotation shaft where the gear under test is located. Based on these first and second time-domain signals, an order spectrum is formed by the order signals generated during the meshing process between the gear under test and the standard gear. Based on the order spectrum, the fault type of the gear under test is determined. This determined order spectrum can more accurately reflect whether the gear under test has a fault and the type of fault. For example, it can be determined that the fault type of the gear under test is at least one of the following: gear parameter deviation fault, tooth surface concavity and radial runout error fault, regular pitch deviation fault, ripple fault, and rust spot fault. The method is simple and easy to implement.

[0071] In some embodiments, step S150, determining the first-order spectrum corresponding to the first time-domain signal and the second-order spectrum corresponding to the second time-domain signal based on the first time-domain signal and the second time-domain signal, includes:

[0072] The first time-domain signal and the second time-domain signal are processed by Fourier transform to obtain the first-order spectrum and the second-order spectrum, respectively.

[0073] Specifically, the first-order spectrum is obtained by performing a Fourier transform on the first time-domain signal. The second-order spectrum is obtained by performing a Fourier transform on the second time-domain signal.

[0074] The technical solution provided in this disclosure involves performing Fourier transform on the first time-domain signal and the second time-domain signal respectively to obtain the first-order spectrum and the second-order spectrum. The method is simple and easy to implement.

[0075] Figure 3 Another gear fault detection method provided in this disclosure embodiment, such as Figure 3 As shown, the method includes the following steps:

[0076] S110. Obtain the first angular acceleration signal of the second gear rotation shaft during the process of the first gear rotating counterclockwise at a first preset speed and when the torque of the second gear is the first preset torque.

[0077] S120. Acquire the second angular acceleration signal of the second gear rotation shaft during the process of the first gear rotating clockwise at the second preset speed and when the torque of the second gear is the second preset torque.

[0078] S130. Perform shaft separation signal processing on the first angular acceleration signal and the second angular acceleration signal respectively to obtain the first time domain signal and the second time domain signal of the rotating shaft where the gear under test is located.

[0079] S151. The first time-domain signal and the second time-domain signal are processed by Fourier transform to obtain the first-order spectrum and the second-order spectrum.

[0080] S161. Based on the first-order spectrum, determine the first vibration noise value during the meshing process between the gear under test and the standard gear.

[0081] S162. Based on the second-order spectrum, determine the second vibration noise value during the meshing process between the gear under test and the standard gear.

[0082] S163. When the first vibration noise value is greater than the first preset noise threshold and / or the second vibration noise value is greater than the second preset noise threshold, the fault type of the gear under test is determined to be at least one of the following: gear parameter deviation fault, tooth surface concavity and radial runout error fault, and regular pitch deviation fault.

[0083] The first vibration noise value and the second vibration noise value both include the values ​​of the main frequency, harmonic frequency and fractional frequency order during the meshing process between the gear under test and the standard gear.

[0084] The technical solution provided in this disclosure determines a first vibration noise value during the meshing process of the gear under test and the standard gear based on a first-order spectrum. A second vibration noise value is determined based on a second-order spectrum. By comparing the vibration noise values ​​determined from the order spectrum with a first preset noise threshold and / or a second preset noise threshold, if the first vibration noise value is greater than the first preset noise threshold and / or the second vibration noise value is greater than the second preset noise threshold, the fault type of the gear under test is determined to be at least one of the following: gear parameter deviation fault, tooth surface concavity and radial runout error, or regular pitch deviation fault. This method allows for accurate judgment of the fault type of the gear under test; it is simple and easy to implement. For example, by analyzing the values ​​of the dominant frequency order, it can be determined whether there is a large deviation in the gear parameters. By analyzing the values ​​of the harmonic frequency order, it can be determined whether the gear has a tooth surface concavity and radial runout error. By analyzing the numerical values ​​of the fractional frequency order, it can be determined whether there is a regular pitch deviation fault in the gear.

[0085] Figure 4 Another gear fault detection method provided in this disclosure embodiment, such as Figure 4 As shown, the method includes the following steps:

[0086] S110. Obtain the first angular acceleration signal of the second gear rotation shaft during the process of the first gear rotating counterclockwise at a first preset speed and when the torque of the second gear is the first preset torque.

[0087] S120. Acquire the second angular acceleration signal of the second gear rotation shaft during the process of the first gear rotating clockwise at the second preset speed and when the torque of the second gear is the second preset torque.

[0088] S130. Perform shaft separation signal processing on the first angular acceleration signal and the second angular acceleration signal respectively to obtain the first time domain signal and the second time domain signal of the rotating shaft where the gear under test is located.

[0089] S151. The first time-domain signal and the second time-domain signal are processed by Fourier transform to obtain the first-order spectrum and the second-order spectrum.

[0090] S164. When at least some order data in the first order spectrum is greater than the order data in the first preset curve, and / or at least some order data in the second order spectrum is greater than the order data in the second preset curve, the fault type of the gear under test is determined to be a ripple fault and / or a rust spot fault.

[0091] The technical solution provided in this disclosure compares the matching relationship between a first-order spectrum and a first preset curve, and / or the matching relationship between a second-order spectrum and a second preset curve. When at least some order data in the first-order spectrum are greater than the order data in the first preset curve, and / or at least some order data in the second-order spectrum are greater than the order data in the second preset curve, the fault type of the gear under test is determined to be a ripple fault and / or a rust spot fault. This method accurately determines the fault condition of the gear under test, is simple, and easy to implement.

[0092] In some embodiments, the gear fault detection method further includes, for example, identifying whether the mating dimensions such as bearing holes are within acceptable limits from the incoming inspection report of the gear under test, to confirm whether the support of the gear under test is abnormal. It also includes identifying whether the span and radial runout are within acceptable limits, to confirm that the clearance of the gear pair under test is normal and that there are no clamping abnormalities during the gear machining process.

[0093] In some embodiments, the gear fault detection method further includes, for example, acquiring the crest value, kurtosis value, and noise curve value of the gear under test if the gear under test has an abnormal appearance, and determining whether the gear under test is abnormal based on the crest value, kurtosis value, and noise curve value. The abnormal appearance includes, for example, tooth surface corrosion, tooth tip chipping, substandard chamfering, and incomplete root cleaning. For example, a dual-meshing method can be used to detect the crest value, kurtosis value, and noise curve value of the gear under test. If the tooth profile report shows substandard tooth profile parameters, such as fko, fha, ffa, fhβ, fp, etc., a single-meshing device is needed to detect whether the meshing peak value, skew frequency, and octave value of the gear under test are lower than the standard values.

[0094] Corresponding to the gear fault detection method provided in the embodiments of this disclosure, the embodiments of this disclosure also provide a gear fault detection device. Figure 5 This is a structural block diagram of a gear fault detection device provided in an embodiment of the present disclosure, as shown below. Figure 5 As shown, the gear fault detection device includes an angular acceleration signal acquisition module 10, a time-domain signal determination module 20, and a fault type determination module 30. The angular acceleration signal acquisition module 10 acquires the first angular acceleration signal of the second gear's rotation shaft during the first gear's counterclockwise rotation at a first preset speed and when the torque of the second gear is the first preset torque. It also acquires the second angular acceleration signal of the second gear's rotation shaft during the first gear's clockwise rotation at a second preset speed and when the torque of the second gear is the second preset torque. The time-domain signal determination module 20 performs shaft separation signal processing on the first and second angular acceleration signals to obtain the first and second time-domain signals of the rotation shaft where the gear under test is located. The fault type determination module 30 determines, based on the first and / or second time-domain signals, that the meshing surface of the gear under test has dents or scratches. The first gear is the gear under test, and the second gear is a standard gear. Alternatively, the first gear is a standard gear, and the second gear is the gear under test.

[0095] The gear fault detection device disclosed in the above embodiments can perform the gear fault detection methods disclosed in the above embodiments and has the same or corresponding beneficial effects. To avoid repetition, it will not be described again here.

[0096] This disclosure also provides a computer-readable storage medium that stores a program or instructions that cause a computer to perform the steps of any of the above methods.

[0097] Optionally, when executed by a computer processor, the computer-executable instructions can also be used to execute the technical solutions of any of the gear fault detection methods provided in the embodiments of this disclosure, so as to achieve the corresponding beneficial effects.

[0098] Based on the above description of the implementation methods, those skilled in the art can clearly understand that the embodiments of this disclosure can be implemented using software and necessary general-purpose hardware, and of course, they can also be implemented using hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solutions of the embodiments of this disclosure, in essence, or the parts that contribute to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as a computer floppy disk, read-only memory (ROM), random access memory (RAM), flash memory, hard disk, or optical disk, etc., including several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments of this disclosure.

[0099] This disclosure also provides an electronic device, including: one or more processors; a memory for storing one or more programs or instructions; the processors execute the steps of any of the above methods by calling the programs or instructions stored in the memory, thereby achieving the corresponding beneficial effects.

[0100] Figure 6 This is a schematic diagram of the hardware structure of an electronic device provided in an embodiment of this disclosure. For example... Figure 6 As shown, the electronic device includes one or more processors 301 and memory 302.

[0101] The processor 301 may be a central processing unit (CPU) or other form of processing unit with data processing capabilities and / or instruction execution capabilities, and may control other components in the electronic device to perform desired functions.

[0102] The memory 302 may include one or more computer program products, which may include various forms of computer-readable storage media, such as volatile memory and / or non-volatile memory. The volatile memory may include, for example, random access memory (RAM) and / or cache memory. The non-volatile memory may include, for example, read-only memory (ROM), hard disk, flash memory, etc. One or more computer program instructions may be stored on the computer-readable storage medium, and the processor 301 may execute the program instructions to implement the gear fault detection method of the embodiments of this disclosure described above, and / or other desired functions. Various contents such as a first angular acceleration signal and a second angular acceleration signal may also be stored in the computer-readable storage medium.

[0103] In one example, the electronic device may also include an input device 303 and an output device 304, which are interconnected via a bus system and / or other forms of connection mechanism (not shown).

[0104] The output device 304 can output various information to the outside, including information such as the determination of dents or scratches on the meshing surface of the gear under test. The output device 304 may include, for example, a display, a speaker, a printer, and a communication network and its connected remote output devices, etc.

[0105] Of course, for the sake of simplicity, Figure 6 Only some of the components of the electronic device relevant to this disclosure are shown, omitting components such as buses, input / output interfaces, etc. In addition, the electronic device may include any other suitable components depending on the specific application.

[0106] This disclosure also provides a gear fault detection system, including an angular acceleration signal sensor and a controller. The angular acceleration signal sensor is used to detect the angular acceleration signal during the meshing process between a standard gear and the gear under test. The controller is used to execute the steps of the gear fault detection method provided in this disclosure.

[0107] In some embodiments, the angular acceleration signal sensor may be fixed to the mounting shaft of a standard gear, or the angular acceleration signal sensor may be fixed to the mounting shaft of the gear to be tested.

[0108] For example, this gear fault detection system can be a single-mesh device system. This single-mesh device uses an angular acceleration sensor, for example, fixed below the mounting shaft of a standard gear. During gear fault detection, the gear under test is the driving gear, driving the standard gear to rotate. The condition of the gear under test is determined by detecting the rotation of the shaft containing the standard gear, i.e., measuring the angular acceleration signal of the supporting shaft. Compared to a dual-mesh device, single-mesh detection requires a fixed center distance, meaning the slide mounting the standard gear is fixed and locked.

[0109] Compared to dual-meshing devices, single-meshing devices require two motors to drive the standard gear and the gear under test, respectively. The gear under test is driven at a stable speed, while the motor on the shaft of the standard gear is subjected to a stable torque to simulate the torque transmission of the gear under test in an actual gearbox (single tooth meshing).

[0110] Actual meshing testing requires two different rotational directions: clockwise and counterclockwise rotation of the gear under test. The speed and torque used in the single-meshing device can be adjusted according to the actual manufacturing precision of the gearbox gears, and can also be modified based on the actual testing results during application. Generally speaking, higher precision requires higher speed and torque settings.

[0111] Determining torque and speed requires comparing and analyzing the trends of vibration and noise values ​​detected by the equipment with the trends of vibration and noise values ​​detected by the gearbox.

[0112] Single-meshing equipment detects the angular acceleration of the mounting shaft of a standard gear. Its principle lies in detecting the change in the rotational speed of the gear under test during meshing, caused by factors such as pitch deviation, runout, installation accuracy, tooth profile and direction parameters, and scratches or dents on the tooth surface. In other words, it directly detects the actual meshing process of the gear under test, rather than the vibration signals generated during meshing. Compared to dual-meshing equipment, single-meshing equipment focuses more on monitoring meshing noise levels, as well as octaves and freak frequencies.

[0113] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0114] The above description is merely a specific embodiment of this disclosure, enabling those skilled in the art to understand or implement it. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this disclosure. Therefore, this disclosure is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for detecting gear faults, characterized in that, include: The first angular acceleration signal of the second gear rotation shaft is obtained during the process of the first gear rotating counterclockwise at a first preset speed and when the torque of the second gear is the first preset torque. Acquire the second angular acceleration signal of the second gear rotation shaft during the process of the first gear rotating clockwise at a second preset speed, and when the torque of the second gear is the second preset torque; The first angular acceleration signal and the second angular acceleration signal are respectively processed by shaft separation signal to obtain the first time domain signal and the second time domain signal of the rotating shaft where the gear under test is located; Based on the first time domain signal and / or the second time domain signal, it is determined that the meshing surface of the gear under test has dents or scratches. Wherein, the first gear is the gear to be tested, and the second gear is a standard gear; or, the first gear is the standard gear, and the second gear is the gear to be tested; The method further includes: Based on the first time-domain signal and the second time-domain signal, determine the first-order spectrum corresponding to the first time-domain signal and the second-order spectrum corresponding to the second time-domain signal; Based on the first-order spectrum and / or the second-order spectrum, the fault type of the gear under test is determined; The determination of the fault type of the gear under test based on the first-order spectrum and / or the second-order spectrum includes: Based on the first order spectrum, the first vibration noise value during the meshing process between the gear under test and the standard gear is determined; Based on the second-order spectrum, the second vibration noise value during the meshing process between the gear under test and the standard gear is determined; When the first vibration noise value is greater than the first preset noise threshold, and / or the second vibration noise value is greater than the second preset noise threshold, the fault type of the gear under test is determined to be at least one of the following: gear parameter deviation fault, tooth surface concavity and radial runout error fault, and regular pitch deviation fault. The first vibration noise value and the second vibration noise value both include the values ​​of the main frequency, harmonic frequency and fractional frequency order during the meshing process between the gear under test and the standard gear.

2. The gear fault detection method according to claim 1, characterized in that, The determination of whether the meshing surface of the gear under test has dents or scratches based on the first time-domain signal and / or the second time-domain signal includes: Obtain the peak value and / or root mean square value of the first time-domain signal, and the peak value and / or root mean square value of the second time-domain signal; When the peak value and / or root mean square value of the first time domain signal are greater than the first preset signal threshold, and / or the peak value and / or root mean square value of the second time domain signal are greater than the second preset signal threshold, it is determined that the meshing surface of the gear under test has dents or scratches.

3. The gear fault detection method according to claim 1, characterized in that, The step of determining the first-order spectrum corresponding to the first time-domain signal and the second-order spectrum corresponding to the second time-domain signal based on the first time-domain signal and the second time-domain signal includes: The first time-domain signal and the second time-domain signal are respectively subjected to Fourier transform processing to obtain the first-order spectrum and the second-order spectrum.

4. The gear fault detection method according to claim 3, characterized in that, The step of determining the fault type of the gear under test based on the first-order spectrum and / or the second-order spectrum includes: When at least some order data in the first order spectrum is greater than the order data in the first preset curve, and / or at least some order data in the second order spectrum is greater than the order data in the second preset curve, the fault type of the gear under test is determined to be a ripple fault and / or a rust spot fault.

5. A gear fault detection device, characterized in that, include: An angular acceleration signal acquisition module is used to acquire the first angular acceleration signal of the second gear rotation shaft during the first gear's counterclockwise rotation at a first preset speed and when the torque of the second gear is the first preset torque. And to acquire the second angular acceleration signal of the second gear rotation shaft during the process of the first gear rotating clockwise at the second preset speed, and when the torque of the second gear is the second preset torque; The time-domain signal determination module is used to perform shaft separation signal processing on the first angular acceleration signal and the second angular acceleration signal to obtain the first time-domain signal and the second time-domain signal of the rotating shaft where the gear under test is located; The fault type determination module is used to determine, based on the first time domain signal and / or the second time domain signal, that the meshing surface of the gear under test has dents or scratches. Wherein, the first gear is the gear to be tested, and the second gear is a standard gear; or, the first gear is the standard gear, and the second gear is the gear to be tested; The fault type determination module is further configured to determine, based on the first time-domain signal and the second time-domain signal, a first-order spectrum corresponding to the first time-domain signal and a second-order spectrum corresponding to the second time-domain signal; Based on the first-order spectrum and / or the second-order spectrum, the fault type of the gear under test is determined; The step of determining the fault type of the gear under test based on the first-order spectrum and / or the second-order spectrum includes: Based on the first order spectrum, the first vibration noise value during the meshing process between the gear under test and the standard gear is determined; Based on the second-order spectrum, the second vibration noise value during the meshing process between the gear under test and the standard gear is determined; When the first vibration noise value is greater than the first preset noise threshold, and / or the second vibration noise value is greater than the second preset noise threshold, the fault type of the gear under test is determined to be at least one of the following: gear parameter deviation fault, tooth surface concavity and radial runout error fault, and regular pitch deviation fault. The first vibration noise value and the second vibration noise value both include the values ​​of the main frequency, harmonic frequency and fractional frequency order during the meshing process between the gear under test and the standard gear.

6. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a program or instructions that cause a computer to perform the steps of the gear fault detection method as described in any one of claims 1 to 4.

7. An electronic device, characterized in that, include: One or more processors; Memory, used to store one or more programs or instructions; The processor executes the steps of the method as described in any one of claims 1 to 4 by invoking programs or instructions stored in the memory.

8. A gear fault detection system, characterized in that, Includes angular acceleration signal sensors and controllers; The angular acceleration signal sensor is used to detect the angular acceleration signal during the meshing process between the standard gear and the gear under test; The controller is used to perform the steps of the gear fault detection method as described in any one of claims 1-4.

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