Vibration test bench for split type gear

Abstract

The invention discloses a vibration test bench for a split type gear. Comprising a workbench, a driving wheel gear driving module, a driven wheel gear load module and an aluminum profile base, a driving wheel of the split type gear is in transmission connection with the driving wheel gear driving module, and a driven wheel is in transmission connection with the driven wheel gear load module; the aluminum profile base is mainly composed of horizontal sliding rails, horizontal sliding blocks and vertical sliding rails, the horizontal sliding rails are fixedly connected with the workbench, two vertical sliding rails are arranged in each horizontal sliding rail in a sliding mode, one horizontal sliding block is connected between the two vertical sliding rails, bearing seats are installed on the horizontal sliding blocks, and the bearing seats are fixedly connected with the workbench. And the bearing seat is sleeved outside the driving wheel driving shaft or the driven wheel driving shaft. The vibration test bench can flexibly adjust the gear clearance and height, is suitable for gears of different specifications, and can respectively collect the real-time vibration and angular velocity data of the driving wheel and the driven wheel.

Description

Technical Field

[0001] The invention relates to the technical field of gear experimental equipment, and in particular to a vibration test bench for split gears. Background Art

[0002] In the field of modern mechanical engineering and automation, gears are key components in the transmission system, and their performance directly affects the efficiency and reliability of the entire mechanical system. With the rapid development of industrial automation and intelligent manufacturing, the demand for gear performance monitoring and fault diagnosis is increasing. Traditional gear fault detection methods mostly rely on experience and regular maintenance, which makes it difficult to achieve real-time monitoring and early warning, resulting in potential faults not being discovered in time, causing equipment downtime and economic losses.

[0003] In recent years, vibration analysis technology has been gradually applied to gear monitoring as an effective means of fault diagnosis. By collecting and analyzing the vibration signals generated by the gears during operation, the gear failure modes, such as gear wear and poor gear meshing, can be identified. However, existing vibration test equipment often has problems such as complex structure, poor flexibility, and limited data collection capabilities, making it difficult to meet diverse testing needs. Summary of the invention

[0004] In view of the deficiencies of the prior art, the present invention proposes a vibration test bench for split gears. The present invention aims to solve the deficiencies of the existing vibration test equipment in terms of flexibility, adjustability and data acquisition capabilities. Through the cooperation of multiple key components, the present invention can efficiently and accurately obtain the vibration and angular velocity data of split gears with different design parameters under different working conditions, thereby providing reliable data support for gear fault diagnosis.

[0005] The present invention is achieved through the following technical solutions:

[0006] 1. A vibration test bench for split gears

[0007] The vibration test bench comprises a workbench, a driving wheel gear drive module installed on the workbench, a driven wheel gear load module and an aluminum profile base.

[0008] An aluminum profile base is arranged in the center of the top surface of the workbench, a split gear is arranged above the aluminum profile base, and a driving wheel gear drive module and a driven wheel gear load module are arranged on the left and right sides of the aluminum profile base respectively, with the axial direction of the split gear as the left and right direction.

[0009] The split gear is mainly composed of a driving wheel and a driven wheel meshing with each other, the driving wheel is sleeved outside the driving wheel drive shaft, the driving wheel drive shaft is transmission-connected with the driving wheel gear drive module, the driven wheel is sleeved outside the driven wheel drive shaft, the driven wheel drive shaft is transmission-connected with the driven wheel gear load module;

[0010] The aluminum profile base is mainly composed of N horizontal slide rails, N horizontal sliders and 2N vertical slide rails. The horizontal slide rails are fixedly connected to the workbench. Two vertical slide rails are slidably arranged in each horizontal slide rail. The two vertical slide rails can move back and forth along the horizontal slide rail; a horizontal slider is connected between the two vertical slide rails. The horizontal slider can move back and forth in the vertical direction in the two vertical slide rails. A bearing seat is installed on the horizontal slider, and the bearing seat sleeve is arranged on the outside of the driving wheel drive shaft or the driven wheel drive shaft.

[0011] The aluminum profile base also includes a plurality of locking blocks, which are used for positioning the vertical slide rails and the horizontal slide blocks.

[0012] The locking block is divided into a vertical guide rail bracket and a bearing seat bracket; a vertical guide rail bracket is arranged on the front and rear sides of the bottom end of each vertical slide rail; the bottom surface of the vertical guide rail bracket is connected to the horizontal slide rail through a T-shaped nut and a first fixing bolt; the rear side surface / front side surface of the front / rear vertical guide rail bracket is connected to the vertical slide rail through a T-shaped nut and a first fixing bolt; a bearing seat bracket is arranged on the front and rear sides of the bottom of each horizontal slider, the bearing seat bracket is fixedly connected to the bottom surface of the horizontal slider, and the front side surface / rear side surface of the front / rear bearing seat bracket is connected to the front / rear vertical slide rail through a T-shaped nut and a second fixing bolt.

[0013] The top surface of the horizontal slide rail is provided with a T-shaped slide groove along the length direction; the two vertical slide rails on the same horizontal slide rail have T-shaped slide grooves on two opposite sides along the length direction.

[0014] In the aluminum profile base, N is equal to four, and the four horizontal slide rails are divided into two groups. The two horizontal slide rails in the same group are respectively arranged on both sides of the axial direction of the split gear; in the first group of horizontal slide rails, the two bearing seats serve as the driving wheel bearing seats and are respectively sleeved on the two ends of the driving wheel drive shaft, and in the second group of horizontal slide rails, the two bearing seats serve as the driven wheel bearing seats and are respectively sleeved on the two ends of the driven wheel drive shaft.

[0015] The vibration test bench also includes a gear speed sensor, a first acceleration sensor and a second acceleration sensor; the two gear speed sensors are arranged above the split gear, and are respectively used to detect the time-varying speeds of the driving wheel and the driven wheel; the first acceleration sensor is installed on the driving wheel bearing seat, and is used to detect the vibration acceleration signal of the driving wheel in the horizontal and vertical directions; the second acceleration sensor is installed on the driven wheel bearing seat, and is used to detect the vibration acceleration signal of the driven wheel in the horizontal and vertical directions.

[0016] The driving wheel gear drive module includes a driving motor seat and a driving motor; the driving motor is installed on the driving motor seat, the driving motor seat is installed on the workbench, and the driving shaft of the driving motor is connected to the driving shaft of the driving wheel; the driven wheel gear load module includes a magnetic powder brake bracket and a magnetic powder brake; the magnetic powder brake is installed on the magnetic powder brake bracket, the magnetic powder brake bracket is installed on the workbench, and the driving shaft of the magnetic powder brake is connected to the driving shaft of the driven wheel.

[0017] The vibration test bench also includes a frame structure, which includes a top horizontal slide rail. The top horizontal slide rails and the horizontal slide rails are the same in number and are aligned and arranged in a one-to-one correspondence. The top end of the vertical slide rail is slidably arranged in the corresponding top horizontal slide rail.

[0018] 2. A vibration test system for split gears

[0019] The vibration test system includes the above-mentioned vibration test bench and a computer. The gear speed sensor, the first acceleration sensor and the second acceleration sensor are all connected to the computer for communication, and the collected signals are transmitted to a pre-trained machine learning model in the computer to obtain vibration test results.

[0020] 3. A vibration test method for split gears using the above vibration test bench

[0021] The vibration testing method comprises the following steps:

[0022] S1. Install the split gear samples with different design parameters on the vibration test bench respectively, control the output of the drive motor and the magnetic powder brake, and then simulate a variety of different working conditions, adjust the positions of the driving wheel bearing seat and the driven wheel bearing seat through the horizontal slide rail and the vertical slide rail, and then adjust the gear center distance of the split gear, collect the real-time vibration signals of each split gear sample under different working conditions and different gear center distances through the gear speed sensor, the first acceleration sensor and the second acceleration sensor, and construct a data set;

[0023] S2. Use machine learning methods to build and train a classification model based on the data set to obtain a trained gear fault detection model;

[0024] S3. The gear to be tested is installed on the test bench, and the vibration signal is collected by the gear speed sensor, the first acceleration sensor and the second acceleration sensor. The collected vibration signal is then input into the trained model to obtain the detection result, thereby realizing the classification of the gearbox fault.

[0025] The beneficial effects of the present invention are as follows:

[0026] 1. The vibration test bench of the present invention has good adjustability and flexibility. By adjusting the relative position of the bearing seat, it can not only perform vibration tests on split gears with different design parameters and specifications, but also adjust the gear center distance and perform vibration tests under different meshing conditions.

[0027] 2. The vibration test bench of the present invention can simulate a variety of different working conditions through the driving wheel gear drive module and the driven wheel gear load module, and effectively obtain the vibration and angular velocity data sets of the gears under different working conditions.

[0028] 3. The vibration test bench of the present invention can monitor the driving wheel and the driven wheel in real time through sensors, and provide high-precision vibration and rotation speed data.

[0029] 4. The vibration test bench of the present invention combines modern data analysis methods (such as machine learning and artificial intelligence) to further improve the accuracy and efficiency of gear fault diagnosis by providing reliable data support, and provides strong technical support for gear health monitoring and fault warning. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a three-dimensional structural diagram of the overall device of the present invention;

[0031] Figure 2 A top view of the entire device of the present invention;

[0032] Figure 3 It is a schematic diagram of fixing the single-side gear of the experimental device of the present invention.

[0033] In the figure, 1, driving motor, 2, driving wheel bearing seat, 3, driven wheel, 4, coupling, 5, magnetic powder brake, 6, magnetic powder brake bracket, 7, fixed angle code, 8, workbench, 9, driving motor seat, 10, driven wheel driving shaft, 11, driving wheel driving shaft, 12, driven wheel bearing seat, 13, aluminum profile base, 14, gear speed sensor, 15, first acceleration sensor, 16, second acceleration sensor, 17, driving wheel, 18, horizontal slide rail, 19, vertical slide rail, 20, locking block, 21, first fixing bolt, 22, second fixing bolt, 23, vertical guide rail bracket, 24, bearing seat bracket. DETAILED DESCRIPTION

[0034] In order to enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below in conjunction with the drawings in the embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this application, not all of them.

[0035] In the present invention, words such as "for example" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "for example" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "for example" or "for example" is intended to present related concepts in a specific way.

[0036] In the present invention, the term "multiple" means two or more. For example, multiple systems refer to two or more systems, and multiple screen terminals refer to two or more screen terminals. The terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. The terms "include", "comprise", "have" and their variations all mean "including but not limited to", unless otherwise specifically emphasized.

[0037] A first aspect of the present invention provides a vibration test bench for split gears. The vibration test bench of the present invention is suitable for split gears of various different models.

[0038] like Figure 1 As shown, the vibration test bench of the present invention includes a workbench 8, a driving wheel gear driving module, a driven wheel gear load module and an aluminum profile base 13 installed on the workbench 8.

[0039] The workbench 8 is the basic structure of the entire test bench and is made of high-strength materials to ensure good stability and vibration resistance during the test. An aluminum profile base 13 is arranged in the center of the top surface of the workbench 8, and a split gear is arranged above the aluminum profile base 13. With the axial direction of the split gear as the left and right direction, the driving wheel gear drive module and the driven wheel gear load module are arranged on the left and right sides of the aluminum profile base 13 respectively.

[0040] The split gear is mainly composed of a driving wheel 17 and a driven wheel 3 that mesh with each other. The driving wheel 17 is sleeved on the outside of the driving wheel drive shaft 11, and the driving wheel drive shaft 11 is transmission connected to the driving wheel gear drive module. The driven wheel 3 is sleeved on the outside of the driven wheel drive shaft 10, and the driven wheel drive shaft 10 is transmission connected to the driven wheel gear load module.

[0041] The aluminum profile base 13 is fixed to the workbench by bolts, which can provide good support and shock absorption effects. It is mainly composed of N horizontal slide rails 18, N horizontal sliders and 2N vertical slide rails 19. The horizontal slide rail 18 is used to adjust the size of the gear tooth side clearance to ensure the accuracy of gear meshing. The vertical slide rail 19 is used to adjust the height of the driving wheel drive shaft 11 and the driven wheel drive shaft 10, so as to adapt to gears of different specifications and different design parameters.

[0042] Each horizontal slide rail 18 is arranged in parallel and is fixedly connected to the workbench 8 by bolts. The length direction of each horizontal slide rail 18 is parallel to the front-to-back direction. Two vertical slide rails 19 are slidably arranged in each horizontal slide rail 18, and the two vertical slide rails 19 can reciprocate forward and backward in the horizontal slide rail 18; a horizontal slider is slidably connected between the two vertical slide rails 19, and the front and rear ends of the horizontal slider are slidably connected to the two vertical slide rails 19 respectively, and the horizontal slider can reciprocate in the vertical direction in the slide grooves of the two vertical slide rails 19. A bearing seat is installed on the horizontal slider, and the bearing seat is sleeved on the outside of the driving wheel drive shaft 11 or the driven wheel drive shaft 10. The bearing seat is connected to the drive shaft (driving wheel drive shaft 11, driven wheel drive shaft 10) through a bearing to ensure the stable operation of the driving wheel and the driven wheel.

[0043] As an optional embodiment of the present invention, in the aluminum profile base 13, N is equal to four. The four horizontal slide rails 18 are divided into two groups, and the two horizontal slide rails 18 in the same group are respectively arranged on both sides of the axial direction of the split gear. In the first group of horizontal slide rails 18, the bearing seats on the two horizontal sliders serve as the driving wheel bearing seats 2, and are respectively sleeved on the outer sides of the two ends of the driving wheel drive shaft 11. In the second group of horizontal slide rails 18, the bearing seats on the two horizontal sliders serve as the driven wheel bearing seats 12, and are respectively sleeved on the outer sides of the two ends of the driven wheel drive shaft 10.

[0044] In the above embodiment, the two sets of horizontal slide rails 18 can be used as follows Figure 2 In the layout shown, the first group of horizontal slide rails 18 are arranged outside the second group of horizontal slide rails 18 , two horizontal slide rails 18 in the second group of horizontal slide rails 18 are arranged at intervals, and the space between the two horizontal slide rails 18 is used to place the split gear.

[0045] Furthermore, the aluminum profile base 13 also includes a plurality of locking blocks 20, which are used to position the vertical slide rail 19 in the horizontal slide rail 18 and the horizontal slider in the vertical slide rail 19 to ensure that no displacement occurs during the test.

[0046] The locking block 20 is divided into a vertical guide rail bracket 23 and a bearing seat bracket 24, which are respectively used to position the vertical slide rail 19 and the horizontal slider. Specifically, a vertical guide rail bracket 23 is arranged on the front and rear sides of the bottom end of each vertical slide rail 19, and the bottom surface of the vertical guide rail bracket 23 is connected to the horizontal slide rail 18 below through a T-shaped nut and a first fixing bolt 21. The rear side surface / front side surface of the front / rear vertical guide rail bracket 23 is connected to the vertical slide rail 19 through a T-shaped nut and a first fixing bolt 21. A bearing seat bracket 24 is arranged on the front and rear sides of the bottom of each horizontal slider, and the bearing seat bracket 24 is fixedly connected to the bottom surface of the horizontal slider, and the front side surface / rear side surface of the front / rear bearing seat bracket 24 is connected to the front / rear vertical slide rail 19 through a T-shaped nut and a second fixing bolt 22.

[0047] Specifically, the horizontal slide rail 18 is provided with a T-shaped slide groove at least on the top surface along the length direction; the two vertical slide rails 19 on the same horizontal slide rail 18 are provided with T-shaped slide grooves at least on two opposite sides along the length direction. The T-shaped slide groove cooperates with the T-shaped nut, and the position adjustment of the vertical slide rail 19 and the horizontal slider can be achieved by adjusting the tightness of the first fixing bolt 21 and the second fixing bolt 22.

[0048] Furthermore, the vibration test bench also includes a gear speed sensor 14, a first acceleration sensor 15 and a second acceleration sensor 16. The two gear speed sensors 14 are arranged above the split gear, respectively above the driving wheel 17 and the driven wheel 3, and are used to detect the time-varying speed of the driving wheel 17 and the driven wheel 3. The first acceleration sensor 15 is installed on one of the driving wheel bearing seats 2, and is used to detect the vibration acceleration signal of the driving wheel 17 in the horizontal and vertical directions; the second acceleration sensor 16 is installed on one of the driven wheel bearing seats 12, and is used to detect the vibration acceleration signal of the driven wheel 3 in the horizontal and vertical directions.

[0049] Specifically, the driving wheel gear drive module includes a driving motor seat 9 and a driving motor 1; the driving motor 1 is fixedly mounted on the driving motor seat 9 by bolts, and the driving motor seat 9 is fixedly mounted on the workbench 8 by bolts, and the driving shaft of the driving motor 1 is connected to the driving wheel driving shaft 11 through a coupling 4 to ensure the high efficiency and stability of power transmission. The power and speed of the driving motor 1 are adjustable to meet different test requirements.

[0050] Specifically, the driven wheel gear load module includes a magnetic powder brake bracket 6 and a magnetic powder brake 5; the magnetic powder brake 5 is fixedly mounted on the magnetic powder brake bracket 6 by bolts, and the magnetic powder brake bracket 6 is fixedly mounted on the workbench 8 by bolts to ensure the stability of the magnetic powder brake 5, and the driving shaft of the magnetic powder brake 5 is connected to the driven wheel driving shaft 10 through a coupling 4 to ensure effective transmission of the load. The magnetic powder brake 5 can provide an adjustable load to simulate the operation of the gear under different working conditions.

[0051] Furthermore, the magnetic powder brake 5 and the drive motor 1 are electrically connected to a controller or a computer respectively and adjusted by the controller or the computer. The magnetic powder brake 5 can be linearly adjusted by the controller or the computer to provide precise load control and adapt to different test requirements.

[0052] Furthermore, if Figure 1 As shown, the vibration test bench also includes a frame structure, which includes a top horizontal slide rail, the top horizontal slide rail and the horizontal slide rail 18 are the same in number and are arranged in a one-to-one correspondence, and the top end of the vertical slide rail 19 is slidably arranged in the corresponding top horizontal slide rail. The frame structure is installed on the top surface of the workbench 8 through the fixed angle bracket 7 at the bottom.

[0053] The vibration test bench of the present invention can be used to test gears with different design parameters, such as Figure 3 As shown, the specific process is as follows:

[0054] ① Adjust the gear center distance: After unscrewing or loosening the first fixing bolt 21 on the bottom surface of the vertical guide rail bracket 23, move the vertical guide rail 19 together with the vertical guide rail bracket 23 in the slide groove on the top surface of the horizontal slide rail 18 below to the required position in the horizontal direction, tighten the first fixing bolt 21 to fix the horizontal position of the vertical guide rail 19, and then fix the horizontal position of the bearing seat (driving wheel bearing seat 2, driven wheel bearing seat 12).

[0055] ② Adjust the vertical distance: After unscrewing or loosening the second fixing bolt 22 on the side of the bearing seat bracket 24, move the horizontal slider connected to the bearing seat bracket 24 along the vertical guide rail 19 to the required position, tighten the second fixing bolt 22, fix the vertical position of the horizontal slider, and then fix the vertical position of the bearing seat (driving wheel bearing seat 2, driven wheel bearing seat 12).

[0056] In the vibration test bench of the present invention, since the fixed structures (horizontal slider, vertical slide rail 19 and horizontal slide rail 18) of the driving wheel bearing seat 2 and the driven wheel bearing seat 12 are separated from each other, the driving wheel vibration acceleration signal and the driven wheel vibration acceleration signal and the time-varying speed signal of the gear pair can be measured separately under different meshing conditions.

[0057] A second aspect of the present invention provides a vibration testing system for a split gear.

[0058] The vibration test system of the present invention includes the above-mentioned vibration test bench and a computer. The gear speed sensor 14, the first acceleration sensor 15 and the second acceleration sensor 16 are all connected to the computer for communication, and the collected signals are transmitted to a pre-trained machine learning model in the computer to obtain vibration test results.

[0059] A third aspect of the present invention provides a vibration test method for a split gear using the above-mentioned dynamic test bench, which specifically includes the following steps:

[0060] S1. Install the split gear samples with different design parameters on the vibration test bench respectively, control the output of the drive motor 1 and the magnetic powder brake 5, and then simulate a variety of different working conditions, adjust the positions of the driving wheel bearing seat 2 and the driven wheel bearing seat 12 through the horizontal slide rail 18 and the vertical slide rail 19, and then adjust the gear center distance of the split gear, collect the real-time vibration signals of each split gear sample under different working conditions and different gear center distances through the gear speed sensor 14, the first acceleration sensor 15 and the second acceleration sensor 16, and construct a data set;

[0061] S2. Use machine learning methods to build and train a classification model based on the data set to obtain a trained gear fault detection model;

[0062] S3. The gear to be tested is installed on the test bench, and the vibration signal is collected by the gear speed sensor 14, the first acceleration sensor 15 and the second acceleration sensor 16. The collected vibration signal is then input into the trained model to obtain the detection result, thereby realizing the classification of the gearbox fault.

[0063] The specific implementation of the vibration test bench of the present invention is as follows:

[0064] The overall structure of the test bench in this embodiment is composed of multiple modules, including a workbench 8, a driving wheel gear drive module, a driven wheel gear load module, a sensor and an aluminum profile base 13. Each module is fixed together by bolts, couplings and other connectors to ensure the stability and reliability of the overall structure.

[0065] The workbench 8 is made of high-strength steel and has good vibration resistance and stability, ensuring that no displacement occurs during the test.

[0066] In the driving wheel gear drive module, the driving motor seat 9 is fixed on the workbench 8 to support the driving motor 1. The driving motor 1 uses a Pufeid 80 servo 1KW, 24V high-power motor, which can provide adjustable 0-3000r / min speed and torque to meet different test requirements. The driving motor 1 is controlled by the Mitsubishi PLC output pulse signal, and the driving shaft of the driving motor 1 is connected to the driving shaft 11 of the driving wheel through the coupling 4 to ensure the high efficiency of power transmission.

[0067] In the driven wheel gear load module, the magnetic powder brake bracket 6 is fixed to the workbench 8 by bolts to ensure the stability of the magnetic powder brake. The model of the magnetic powder brake 5 is Haibos PB-0.6, which can provide an adjustable load of 0 to 6N·M, simulate the gear operation under different working conditions, and can be linearly adjusted through the controller. The drive shaft of the magnetic powder brake 5 is connected to the driven wheel drive shaft 10 through the coupling 4 to ensure the effective transmission of the load.

[0068] The bearing seat part includes a driving wheel bearing seat 2 and a driven wheel bearing seat 12. The driving wheel drive shaft 11 is installed on the driving wheel bearing seat 2 to ensure the stable operation of the driving wheel; the driven wheel drive shaft 10 is installed on the driven wheel bearing seat 12 to ensure the stable operation of the driven wheel.

[0069] The driving wheel bearing seat 2 and the driven wheel bearing seat 12 are both mounted on an aluminum profile base 13, and the aluminum profile base 13 is connected to the workbench 8 by bolts to provide good support and shock absorption effects.

[0070] In the sensor part, the first acceleration sensor 15 and the second acceleration sensor 16 both use the 4535-B triaxial acceleration sensor of BK Company. The first acceleration sensor 15 is installed on the driving wheel bearing seat 2, and is used to detect the vibration acceleration signal of the driving wheel in the horizontal and vertical directions in real time. The data is transmitted in real time through the data acquisition system. The second acceleration sensor 16 is installed on the driven wheel bearing seat 12, and is used to detect the vibration acceleration signal of the driven wheel in the horizontal and vertical directions to ensure comprehensive monitoring of the vibration state of the gear. In addition, the gear speed sensor 14 is installed above the driving wheel and the driven wheel to detect the time-varying speed of the driving wheel gear and the driven wheel gear in real time, providing key operating parameters.

[0071] This embodiment provides a specific implementation process of using this vibration test bench to perform a vibration test:

[0072] S1. Obtain the vibration and time-varying speed data set for training the gear fault vibration algorithm model. The specific process is as follows:

[0073] S1.1) Install split gears with different design parameters on the vibration test bench. The installation process is as follows: first, place the workbench 8 on a flat ground to ensure its stability; then, install the drive motor 1 and the magnetic powder brake 5 on the workbench 8 to ensure their accurate positions; then, install the driving wheel 17 and the driven wheel 3, and connect the drive motor 1 to the driving wheel drive shaft 11 through the coupling 4. The arrangement of sensors is also very important. Install the first acceleration sensor 15 and the second acceleration sensor 16 on the driving wheel bearing seat 2 and the driven wheel bearing seat 12 respectively. Install the gear speed sensor 14 above the driving wheel and the driven wheel to ensure that the gear speed can be monitored in real time.

[0074] S1.2) For each split gear, adjust the gear center distance and the vertical position of the driving wheel bearing seat 2 and the driven wheel bearing seat 12 through the horizontal slider, vertical slide rail 19 and horizontal slide rail 18. Under different meshing conditions, start the magnetic powder brake 5 and adjust its load to 3N·m. Start the drive motor 1 to make the driving wheel 17 run at a speed of 1200r / min, and then collect signals through the arranged data acquisition system. Vibration data is processed by a high-frequency dynamic acquisition system to ensure the accuracy and real-time nature of the data. After completing the signal acquisition under the above conditions, replace gears with different parameters on the test bench to collect vibration signals.

[0075] The signal acquisition process is specifically as follows: using the gear speed sensor 14, the first acceleration sensor 15 and the second acceleration sensor 16 to collect vibration data; by controlling the output speed of the drive motor 1 and the load of the magnetic powder brake 5, under different working conditions, using the gear speed sensor 14, the first acceleration sensor 15 and the second acceleration sensor 16 to collect vibration data.

[0076] S2. The collected data will be used for subsequent fault diagnosis model training, and combined with the current classification algorithm model technology, a trained gear fault detection model will be obtained.

[0077] S3. Install the gear to be tested on the test bench according to step S1.1, collect vibration signals according to step S1.2), and then input the collected vibration signals into the trained model to obtain the detection results, so as to achieve high-precision classification of gear fault types, such as tooth root fracture and tooth surface peeling.

[0078] Through the above implementation, the split gear vibration test bench of the present invention can effectively obtain high-quality data sets for training gear fault vibration algorithm models, providing strong support for gearbox fault diagnosis. The design and structure of the test bench make it have broad prospects in practical applications and can provide important technical support for gearbox maintenance and fault warning.

[0079] In summary, the split gear vibration test bench of the present invention can measure the vibration data of the driving wheel and the driven wheel separately through its unique design and structure, which is more in line with physical theory, and effectively obtains high-quality data sets for training gear fault vibration algorithm models, providing strong support for gearbox fault diagnosis. By combining classification algorithm model technology, high-precision classification of gear set faults can be achieved, and the reliability and intelligence level of fault diagnosis can be improved. The present invention has broad prospects in practical applications and can provide important technical support for gearbox maintenance and fault warning.

[0080] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A vibration test bench for split gears, characterized in that: The invention comprises a workbench (8), a driving wheel gear drive module, a driven wheel gear load module and an aluminum profile base (13) installed on the workbench (8); the aluminum profile base (13) is arranged at the center of the top surface of the workbench (8); a split gear is arranged above the aluminum profile base (13); the driving wheel gear drive module and the driven wheel gear load module are arranged on the left and right sides of the aluminum profile base (13) with the axial direction of the split gear as the left and right direction; the split gear is mainly composed of a driving wheel (17) and a driven wheel (3) meshing with each other; the driving wheel (17) is sleeved on the outside of the driving wheel drive shaft (11); the driving wheel drive shaft (11) is transmission-connected to the driving wheel gear drive module; the driven wheel (3) is sleeved on the driven wheel drive shaft (11); 0), the driven wheel drive shaft (10) is transmission-connected to the driven wheel gear load module; the aluminum profile base (13) is mainly composed of N horizontal slide rails (18), N horizontal sliders and 2N vertical slide rails (19); the horizontal slide rails (18) are fixedly connected to the workbench (8); two vertical slide rails (19) are slidably arranged in each horizontal slide rail (18); the two vertical slide rails (19) can move back and forth in the horizontal slide rail (18); a horizontal slider is connected between the two vertical slide rails (19); the horizontal slider can move back and forth in the vertical direction in the two vertical slide rails (19); a bearing seat is installed on the horizontal slider; the bearing seat is sleeved on the outside of the driving wheel drive shaft (11) or the driven wheel drive shaft (10).

2. The vibration test bench for split gears according to claim 1, characterized in that: The aluminum profile base (13) also includes a plurality of locking blocks (20), and the locking blocks (20) are used for positioning the vertical slide rail (19) and the horizontal slide block.

3. The vibration test bench for split gears according to claim 2, characterized in that: The locking block (20) is divided into a vertical guide rail bracket (23) and a bearing seat bracket (24); a vertical guide rail bracket (23) is arranged on the front and rear sides of the bottom end of each vertical slide rail (19); the bottom surface of the vertical guide rail bracket (23) is connected to the horizontal slide rail (18) through a T-shaped nut and a first fixing bolt (21); the rear side surface / front side surface of the front / rear vertical guide rail bracket (23) is connected to the vertical slide rail (19) through a T-shaped nut and a first fixing bolt (21); a bearing seat bracket (24) is arranged on the front and rear sides of the bottom of each horizontal slide block, the bearing seat bracket (24) is fixedly connected to the bottom surface of the horizontal slide block, and the front side surface / rear side surface of the front / rear bearing seat bracket (24) is connected to the front / rear vertical slide rail (19) through a T-shaped nut and a second fixing bolt (22).

4. The vibration test bench for split gears according to claim 3, characterized in that: The top surface of the horizontal slide rail (18) is provided with a T-shaped slide groove along the length direction; the two vertical slide rails (19) on the same horizontal slide rail (18) have T-shaped slide grooves on two opposite sides along the length direction.

5. The vibration test bench for split gears according to claim 2, characterized in that: In the aluminum profile base (13), N is equal to four, and the four horizontal slide rails (18) are divided into two groups. The two horizontal slide rails (18) in the same group are respectively arranged on both sides of the axial direction of the split gear; in the first group of horizontal slide rails (18), the two bearing seats serve as the driving wheel bearing seats (2) and are respectively sleeved on the two ends of the driving wheel drive shaft (11); in the second group of horizontal slide rails (18), the two bearing seats serve as the driven wheel bearing seats (12) and are respectively sleeved on the two ends of the driven wheel drive shaft (10).

6. The vibration test bench for split gears according to claim 5, characterized in that: The vibration test bench also includes a gear speed sensor (14), a first acceleration sensor (15) and a second acceleration sensor (16); the two gear speed sensors (14) are arranged above the split gear and are used to detect the time-varying speeds of the driving wheel (17) and the driven wheel (3) respectively; the first acceleration sensor (15) is installed on the driving wheel bearing seat (2) and is used to detect the vibration acceleration signals of the driving wheel (17) in the horizontal and vertical directions; the second acceleration sensor (16) is installed on the driven wheel bearing seat (12) and is used to detect the vibration acceleration signals of the driven wheel (3) in the horizontal and vertical directions.

7. The vibration test bench for split gears according to claim 1, characterized in that: The driving wheel gear drive module comprises a driving motor seat (9) and a driving motor (1); the driving motor (1) is mounted on the driving motor seat (9), the driving motor seat (9) is mounted on a workbench (8), and the driving shaft of the driving motor (1) is connected to the driving wheel driving shaft (11); the driven wheel gear load module comprises a magnetic powder brake bracket (6) and a magnetic powder brake (5); the magnetic powder brake (5) is mounted on the magnetic powder brake bracket (6), the magnetic powder brake bracket (6) is mounted on the workbench (8), and the driving shaft of the magnetic powder brake (5) is connected to the driven wheel driving shaft (10).

8. The vibration test bench for split gears according to claim 1, characterized in that: The vibration test bench also includes a frame structure, which includes a top horizontal slide rail. The top horizontal slide rail and the horizontal slide rail (18) are of the same number and are arranged in a one-to-one correspondence. The top end of the vertical slide rail (19) is slidably arranged in the corresponding top horizontal slide rail.

9. A vibration test system for split gears, characterized in that: It comprises a vibration test bench as described in any one of claims 1 to 8 and a computer, wherein a gear speed sensor (14), a first acceleration sensor (15) and a second acceleration sensor (16) are all connected to the computer for communication, and the collected signals are transmitted to a pre-trained machine learning model in the computer to obtain vibration test results.

10. A vibration test method for a split gear using the vibration test bench according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1, respectively installing split gear samples with different design parameters on the vibration test bench, controlling the output of the drive motor (1) and the magnetic powder brake (5), thereby simulating a variety of different working conditions, adjusting the positions of the driving wheel bearing seat (2) and the driven wheel bearing seat (12) through the horizontal slide rail (18) and the vertical slide rail (19), thereby adjusting the gear center distance of the split gear, collecting the real-time vibration signals of each split gear sample under different working conditions and different gear center distances through the gear speed sensor (14), the first acceleration sensor (15) and the second acceleration sensor (16), and constructing a data set; S2. Use machine learning methods to build and train a classification model based on the data set to obtain a trained gear fault detection model; S3. The gear to be tested is installed on a test bench, and a vibration signal is collected through a gear speed sensor (14), a first acceleration sensor (15) and a second acceleration sensor (16). The collected vibration signal is then input into a trained model to obtain a test result, thereby achieving classification of the gearbox fault.

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