Device and method for testing high-speed vibration mode of gearbox

Abstract

The invention discloses a gearbox high-speed-level vibration mode testing device and a testing method, and relates to the technical field of gearbox production testing, the gearbox high-speed-level vibration mode testing device comprises a testing table, the testing table is arranged to be a horizontal workbench, a linear sliding groove of a linear structure is formed below a testing opening, a sliding seat is slidably connected in the linear sliding groove, and the sliding seat is arranged in the testing opening. A gear box is installed at the top end of the sliding seat and horizontally slides in the testing opening through a linear sliding groove. The testing port is of a semicircular arch structure, a gear box is convenient to install and easy to automatically move, a linear sliding groove of a linear structure is formed below the testing port, a sliding seat is slidably connected into the linear sliding groove, the gear box is installed at the top end of the sliding seat, and the gear box horizontally slides in the testing port through the linear sliding groove. Axial reciprocating sliding of the gear box can be achieved through the linear sliding groove, and receding can be conveniently conducted in the mounting and dismounting process.

Description

Technical Field

[0001] The present invention relates to the technical field of gearbox production testing, and particularly to a high-speed stage vibration mode testing device and testing method for a gearbox. Background Art

[0002] The gearbox is a key component in the mechanical transmission system, and its working state directly affects the performance and reliability of the entire system. Especially under high-speed operating conditions, the vibration problem of the gearbox is particularly prominent. In order to ensure the normal operation of the gearbox, it is very necessary to conduct vibration mode testing on it. Among them, the high-speed stage vibration mode testing device for the gearbox can effectively conduct vibration mode testing on the gearbox through the organic combination of an excitation system, a measurement system, and an analysis system. Through spectrum analysis and modal analysis, the natural frequencies and vibration modes of the gearbox can be accurately identified, providing important reference bases for the design and maintenance of the gearbox.

[0003] For the spectrum analysis of the gearbox, it mainly includes Fourier transform: performing Fourier transform on the collected vibration signals to obtain a spectrogram. Spectrum characteristics: identifying the main frequency components in the spectrogram, including natural frequencies, meshing frequencies, etc. For the modal analysis of the gearbox, it mainly includes modal parameter identification: identifying modal parameters such as the natural frequency, damping ratio, and vibration mode of the gearbox through the results of spectrum analysis. Modal parameter verification: comparing the test results with the finite element calculation results to verify the accuracy of the test results.

[0004] Currently, the testing methods for gearboxes mainly include single-point excitation: applying excitation at one point of the gearbox, which is suitable for testing simple structures. Multi-point excitation: applying excitation simultaneously at multiple points of the gearbox, which is suitable for testing complex structures. And the selection of measurement points, selecting key parts of the gearbox (such as bearing seats, gear meshing positions, and various parts of the gearbox housing, etc.) as measurement points. Measuring at different positions of the gearbox to obtain comprehensive vibration information.

[0005] Traditionally, for the measurement points of the gearbox, mainly the position of the test pen remains unchanged, and the gearbox continuously changes its position on the workbench. However, the continuous change of the gearbox's position on the workbench makes the test process very cumbersome, with low test efficiency and a large workload for testers. Summary of the Invention

[0006] In view of this, the purpose of the present invention is to provide a high-speed stage vibration mode testing device and testing method for a gearbox to solve the technical problems that, traditionally, for the measurement points of the gearbox, mainly the position of the test pen remains unchanged, and the gearbox continuously changes its position on the workbench, which makes the test process very cumbersome, with low test efficiency and a large workload for testers.

[0007] To achieve the above object, the present invention is realized through the following technical solutions:

[0008] A high-speed vibration mode testing device for a gearbox, comprising a test bench, the test bench being set as a workbench on a horizontal plane, a sector plate standing upright on the top end surface of the test bench being fixed to the top end of the test bench, a test opening being formed in the middle of the sector plate, the test opening being of a semi-circular arch structure, a linear chute of a linear structure being formed below the test opening, a sliding seat being slidably connected in the linear chute, a gearbox being installed on the top end of the sliding seat, the gearbox horizontally sliding in the test opening through the linear chute, a plurality of independently automatically retractable fixed monitors being arranged on the inner wall of the test opening, and the plurality of fixed monitors being a temperature monitor, a vibration detector, and a noise detector respectively.

[0009] As a preferred technical solution of the present invention, the fixed monitor includes a motor chamber opened inside the sector plate, an electric push rod being fixedly installed on the surface of the motor chamber, a push rod extending downward from the electric push rod, the push rod extending out of the inner wall surface of the test opening, and the fixed monitor being fixed to the top end of the push rod extending out of the inner wall surface of the test opening.

[0010] As a preferred technical solution of the present invention, hinge supports are arranged on the surface of the sector plate at equal circumferential intervals, a swing rod being rotatably connected to the surface of each hinge support, and a swing monitor being arranged at the top end of each swing rod.

[0011] As a preferred technical solution of the present invention, a threaded lead screw is rotatably connected to the bottom inside the linear chute, both ends of the threaded lead screw being rotatably connected to a threaded sleeve, the surface of each threaded sleeve at each end being fixed to the bottom end of the test bench, and a servo motor two being arranged at one end of the threaded lead screw, the servo motor two being fixedly connected to the threaded lead screw.

[0012] As a preferred technical solution of the present invention, a through threaded hole is formed in the middle of the sliding seat, and the threaded hole is threadedly connected to the surface of the threaded lead screw.

[0013] As a preferred technical solution of the present invention, a motor bracket is fixed to the top end of the test bench, a servo motor one being fixedly installed on the top surface of the motor bracket, an output shaft extending forward from the servo motor one, and a gear one being fixed to the top end of the output shaft of the servo motor one.

[0014] As a preferred technical solution of the present invention, a power input shaft and a power output shaft are arranged on the surface of the gearbox, a gear two being installed on the power input shaft on the surface of the gearbox, and the gear two being meshed and connected to the gear one.

[0015] As a preferred technical solution of the present invention, a plurality of support legs are arranged at the bottom end of the test bench.

[0016] As a preferred technical solution of the present invention, a locking screw is provided at the top of the sliding seat, and the gearbox is mounted on the locking screw and locked and fixed by a nut.

[0017] According to the above-mentioned gearbox high-speed stage vibration mode testing device, a gearbox high-speed stage vibration mode testing method is also provided, which specifically includes the following steps:

[0018] S1. Gearbox installation: Install the gearbox to be detected on the top surface of the sliding seat, and lock and fix the gearbox on the top surface of the sliding seat by installing it on the locking screw through a nut.

[0019] S2. Horizontal sliding: Horizontally slide and convey the gearbox installed on the top surface of the sliding seat in step S1. Through the screw drive of the threaded lead screw and the threaded hole, push the sliding seat to move into the test port.

[0020] S3. Gear installation: Install gear two on the gearbox that has moved into the test port in step S2, and install gear one that is cooperatively connected with gear two on the output shaft of the first servo motor at the top of the test bench.

[0021] S4. Monitor adjustment: Install and fix monitors on the surface of the gearbox staying in the test port in step S3. Extend the push rod outwards through the electric push rod, and push each fixed monitor to press on the surface of the gearbox to test parameters such as vibration, noise, and temperature generated during the operation of the gearbox.

[0022] S5. Auxiliary monitoring: Place each swing monitor on the surface of the sector plate in step S4 on the surface of the gearbox, so as to test parameters such as vibration, noise, and temperature at different positions on the surface of the gearbox.

[0023] The beneficial effects of the present invention are as follows:

[0024] In the present invention, by setting the test bench as a horizontal workbench, it is convenient to install the gear table and operate the testing device on the surface of the workbench. A sector plate standing upright on the top surface of the test bench is fixed at the top of the test bench. A test port is opened in the middle of the sector plate, and the test port is a semi-circular arch structure, which is convenient for installing the gearbox and easy to realize the automatic movement of the gearbox. A linear chute with a linear structure is opened below the test port, and a sliding seat is slidably connected in the linear chute. The gearbox is installed at the top of the sliding seat, and the gearbox horizontally slides in the test port through the linear chute. Axial reciprocating sliding of the gearbox can be realized through the linear chute, which is convenient for making way during installation and disassembly.

[0025] The inner wall of the test port is provided with several independently automatically retractable fixed monitors. The several fixed monitors are respectively a temperature monitor, a vibration detector, and a noise detector, which respectively detect the temperature, vibration, noise, etc. during the working process of the surface of the gearbox in the test port. Specifically, the fixed monitor includes a motor chamber opened inside the sector plate. The surface of the motor chamber is fixedly installed with an electric push rod. The electric push rod extends downward with a push rod, and the push rod extends out of the surface of the inner wall of the test port. The fixed monitor is fixed at the top end of the push rod extending out of the surface of the inner wall of the test port. Each fixed monitor is controlled by the electric push rod to extend into and out of the test port, so that each fixed monitor is fixed on the surface of the gearbox and fits tightly with the surface of the gearbox. Each fixed monitor is controlled by the electric push rod to reciprocally retract and extend in the test port, realizing rapid connection and rapid disassembly with the surface of the gearbox, facilitating the automated actions of automatic connection and automatic separation during installation and disassembly.

[0026] The surface of the sector plate is provided with hinge supports at equal circumferential intervals. A ratchet check device is arranged inside the hinge supports, so that the swing rod rotatably connected to the surface of each hinge support can be self-locked at any angle, so that the swing monitor at the top end of each swing rod fits tightly with the surface of the gearbox, which is beneficial to improving the temperature, vibration, and noise monitoring of the surface of the gearbox at this position and improving the accuracy of the monitoring parameters.

[0027] At the bottom of the linear chute, a threaded lead screw is rotatably connected. The two ends of the threaded lead screw are rotatably connected to the threaded sleeves. The surface of each threaded sleeve is fixed to the bottom end of the test bench. One end of the threaded lead screw is provided with a servo motor two, and the servo motor two is fixedly connected to the threaded lead screw. A through threaded hole is opened in the middle of the sliding seat, and the threaded hole is threadedly connected to the surface of the threaded lead screw. When the servo motor two rotates, it drives the threaded lead screw to rotate. The threaded lead screw rotates and pushes the sliding seat to axially slide along the surface of the threaded lead screw through threaded connection, so that the sliding seat can horizontally slide on the surface of the workbench, so that the gearbox can axially reciprocally slide, facilitating the gearbox to give way compared with the sector plate during the installation and disassembly of the gearbox.

[0028] A motor bracket is fixed at the top end of the test bench. A servo motor one is fixedly installed on the top surface of the motor bracket. The servo motor one extends forward with an output shaft, and a gear one is fixed at the top end of the output shaft of the servo motor one, which is convenient for driving the gearbox to rotate, so that the vibration during the working process of the gearbox can be effectively monitored.

[0029] A power input shaft and a power output shaft are arranged on the surface of the gearbox. A gear two is installed on the power input shaft on the surface of the gearbox, and the gear two is meshed and connected with the gear one, which is convenient for driving the gearbox to rotate and work.

[0030] Other advantages, objects and features of the present invention will be set forth in part in the following description, and in part will be obvious to those skilled in the art upon examination of the following, or may be learned from practice of the present invention. The objects and other advantages of the present invention may be realized and obtained by the following description of the specification. Brief Description of the Drawings

[0031] Figure 1 is a front view structural schematic diagram of the high-speed stage vibration mode test device of the gearbox of the present invention;

[0032] Figure 2 is a left view sectional structural schematic of the high-speed stage vibration mode test device of the gearbox of the present invention Figure 1 ;

[0033] Figure 3 is a left view sectional structural schematic of the high-speed stage vibration mode test device of the gearbox of the present invention Figure 2 ;

[0034] Figure 4 is a top view structural schematic diagram of the high-speed stage vibration mode test device of the gearbox of the present invention;

[0035] Figure 5 is the attached Figure 1 local enlarged view at C of the present invention's specification;

[0036] Figure 6 is the attached Figure 3 local enlarged view at A of the present invention's specification;

[0037] Figure 7 is the attached Figure 3 local enlarged view at B of the present invention's specification;

[0038] Figure 8 is the bottom view structural schematic diagram of the fixed monitor of the present invention;

[0039] Figure 9 is the step flowchart of the high-speed stage vibration mode test method of the gearbox of the present invention;

[0040] In the figure: support leg 1, test bench 2, sector plate 3, hinge support 4, swing rod 5, test port 6, fixed monitor 7, swing monitor 8, gearbox 9, sliding seat 10, threaded lead screw 11, threaded sleeve 12, locking screw 13, linear sliding groove 14, motor compartment 15, motor bracket 16, servo motor 17, gear 18, gear 19, power input shaft 20, electric push rod 21, push rod 22, servo motor 23, threaded hole 24. Detailed Description of the Invention

[0041] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein can be arranged and designed in a variety of different configurations.

[0042] Therefore, the detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0043] It should be noted that like reference numerals and letters denote like items in the following figures, and thus, once an item is defined in one figure, it is not necessary to further define and explain it in subsequent figures.

[0044] In the above description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "one side", "the other side", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship when the product of the present invention is normally placed. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention. In addition, terms such as "first", "second", etc. are only used for descriptive distinction and should not be construed as indicating or implying relative importance.

[0045] In addition, terms such as "identical" do not mean that the components are absolutely identical, but there may be slight differences. The term "perpendicular" only means that the positional relationship between components is relatively more perpendicular than "parallel", and does not mean that the structure must be completely perpendicular, but may be slightly inclined.

[0046] Embodiment 1

[0047] Please refer to Figures 1-8, a technical solution provided by the present invention: a high-speed vibration mode testing device for a gearbox, including a test bench 2, the test bench 2 is set as a workbench on a horizontal plane, a sector plate 3 standing upright on the top surface of the test bench 2 is fixed at the top of the test bench 2, a test opening 6 is provided in the middle of the sector plate 3, the test opening 6 is of a semi-circular arch structure, a linear chute 14 with a linear structure is provided below the test opening 6, a sliding seat 10 is slidably connected in the linear chute 14, a gearbox 9 is installed at the top of the sliding seat 10. Specifically, the gearbox 9 to be detected is installed on the top surface of the sliding seat 10 and locked and fixed to the top surface of the sliding seat 10 by a locking screw 13 through a nut; the gearbox 9 slides horizontally in the test opening 6 through the linear chute 14, and a plurality of independently automatically retractable fixed monitors 7 are provided on the inner wall of the test opening 6, and the plurality of fixed monitors 7 are respectively a temperature monitor, a vibration detector, and a noise detector.

[0048] The fixed monitor 7 includes a motor chamber 15 opened inside the sector plate 3, an electric push rod 21 is fixedly installed on the surface of the motor chamber 15, the electric push rod 21 extends downward with a push rod 22, the push rod 22 extends out of the inner wall surface of the test opening 6, and the fixed monitor 7 is fixed at the top of the push rod 22 extending out of the inner wall surface of the test opening 6.

[0049] Specifically, in this embodiment, the present invention is convenient for installing a gear table and operating the testing device on the surface of the workbench by setting the test bench 2 as a workbench on a horizontal plane. A sector plate 3 standing upright on the top surface of the test bench 2 is fixed at the top of the test bench 2, a test opening 6 is provided in the middle of the sector plate 3, the test opening 6 is of a semi-circular arch structure, which is convenient for installing the gearbox 9 and easy to realize the automatic movement of the gearbox 9. A linear chute 14 with a linear structure is provided below the test opening 6, a sliding seat 10 is slidably connected in the linear chute 14, a gearbox 9 is installed at the top of the sliding seat 10, and the gearbox 9 slides horizontally in the test opening 6 through the linear chute 14. Axial reciprocating sliding of the gearbox 9 can be realized through the linear chute 14, which is convenient for making way during installation and disassembly.

[0050] Specifically, in the present embodiment, the inner wall of the test port 6 is provided with a plurality of independently and automatically retractable fixed monitors 7, which are respectively a temperature monitor, a vibration detector, and a noise detector, and respectively detect the temperature, vibration, noise, etc. on the surface of the gear box 9 in the test port 6 during the working process. Specifically, the fixed monitor 7 includes a motor compartment 15 opened inside the fan-shaped plate 3, and an electric push rod 21 is fixedly installed on the surface of the motor compartment 15. The electric push rod 21 extends downwardly with a push rod 22, and the push rod 22 extends out of the inner wall surface of the test port 6. The fixed monitor 7 is fixed to the top of the push rod 22 extending out of the inner wall surface of the test port 6. Each fixed monitor 7 is controlled by the electric push rod 21 to extend in and out of the test port 6, so that each fixed monitor 7 is fixed on the surface of the gear box 9 and fits tightly with the surface of the gear box 9. Each fixed monitor 7 is controlled by the electric push rod 21 to reciprocate and retract in the test port 6, so as to realize quick connection and quick disassembly with the surface of the gear box 9, and to facilitate the automatic connection and automatic separation during installation and disassembly.

[0051] The surface of the sector plate 3 is provided with hinge supports 4 at equal intervals on the circumference, and the surface of each hinge support 4 is rotatably connected with a swing rod 5, and the top of each swing rod 5 is provided with a swing monitor 8.

[0052] Specifically, in the present embodiment, hinge supports 4 are provided on the surface of the sector plate 3 at equal intervals on the circumference, and ratchet check devices are provided inside the hinge supports 4, so that the swing rods 5 rotatably connected to the surface of each hinge support 4 can be self-locked when swung to any angle, so that the swing monitor 8 at the top of each swing rod 5 fits tightly with the surface of the gear box 9, which is beneficial to improving the temperature, vibration and noise monitoring of the position on the surface of the gear box 9 and improving the accuracy of the monitoring parameters.

[0053] Specifically, in this embodiment, the swing monitor 8 and the fixed monitor 7 are the same type of monitors, which are monitoring sensors for temperature, vibration, noise, etc.

[0054] Among them, vibration sensor is an existing technology. Vibration sensor is a device that can convert mechanical vibration signals (such as displacement, velocity, acceleration) into electrical signals. It is widely used in mechanical state monitoring, fault diagnosis, structural health monitoring and other fields. Its core principles include: Piezoelectric effect: the material generates electric charge when it is subjected to force (such as piezoelectric ceramics). Electromagnetic induction: the coil cuts the magnetic flux lines in the magnetic field to generate current (such as eddy current type). Optical principle: Vibration displacement is measured by optical interference or laser vibration measurement technology.

[0055] The vibration sensor adopts the displacement velocity amplitude vibration sensor produced by the Witt Intelligent brand. It has the function of vibration monitoring and waterproofing of motors, water pumps and gear boxes. The model is WT-VB01-485 vibration monitoring equipment.

[0056] Specifically, in this embodiment, the noise detector uses a stainless steel noise sensor RS485 industrial-grade noise detection directional noise sensor produced by the brand SOONSALL / Xunjia, and a noise monitoring device with the model XM8765.

[0057] Specifically, in this embodiment, the temperature sensor uses a CWDZ11A temperature sensor produced by the brand Xingyi, and an integrated temperature transmitter PT100 thermal resistor with the model CWDZ11A is adopted.

[0058] Embodiment 2

[0059] Please refer to Figures 1-8 , which is another technical solution provided by the present invention. This embodiment has the same parts as the above Embodiment 1, and the same parts will not be elaborated in this embodiment. The specific differences are as follows:

[0060] A gearbox high-speed stage vibration mode testing device includes a test bench 2. The test bench 2 is set as a workbench on a horizontal plane. A sector plate 3 standing upright on the top surface of the test bench 2 is fixed at the top of the test bench 2. A test port 6 is opened in the middle of the sector plate 3. The test port 6 is in a semi-circular arch structure. A linear chute 14 with a linear structure is opened below the test port 6. A sliding seat 10 is slidably connected in the linear chute 14. A gearbox 9 is installed at the top of the sliding seat 10. Specifically, the gearbox 9 to be detected is installed on the top surface of the sliding seat 10 and is locked and fixed to the top surface of the sliding seat 10 by a locking screw 13 through a nut; the gearbox 9 horizontally slides in the test port 6 through the linear chute 14. The inner wall of the test port 6 is provided with a plurality of independently automatically retractable fixed monitors 7. The plurality of fixed monitors 7 are respectively a temperature monitor, a vibration detector, and a noise detector.

[0061] At the bottom in the linear chute 14, a threaded lead screw 11 is rotatably connected. The two ends of the threaded lead screw 11 are rotatably connected to a threaded sleeve 12. The surface of each threaded sleeve 12 is fixed to the bottom end of the test bench 2. One end of the threaded lead screw 11 is provided with a servo motor two 23. The servo motor two 23 is fixedly connected to the threaded lead screw 11. A through threaded hole 24 is opened in the middle of the sliding seat 10. The threaded hole 24 is threadedly connected to the surface of the threaded lead screw 11.

[0062] Specifically, in this embodiment, a threaded lead screw 11 is rotatably connected to the bottom inside the linear chute 14. Both ends of the threaded lead screw 11 are rotatably connected to the threaded sleeves 12. The surface of each threaded sleeve 12 is fixed to the bottom end of the test bench 2. One end of the threaded lead screw 11 is provided with a servo motor two 23, and the servo motor two 23 is fixedly connected to the threaded lead screw 11. A through threaded hole 24 is provided in the middle of the sliding seat 10, and the threaded hole 24 is threadedly connected to the surface of the threaded lead screw 11. When the servo motor two 23 rotates, it drives the threaded lead screw 11 to rotate. The threaded lead screw 11 rotates and pushes the sliding seat 10 to axially slide along the surface of the threaded lead screw 11 through threaded connection, so that the sliding seat 10 can horizontally slide on the workbench surface, thereby realizing the axial reciprocating sliding of the gearbox 9, which is convenient for making way compared with the sector plate 3 during the installation and disassembly of the gearbox 9.

[0063] A motor bracket 16 is fixed to the top end of the test bench 2. A servo motor one 17 is fixedly installed on the top surface of the motor bracket 16. The servo motor one 17 has an output shaft extending forward, and a gear one 18 is fixed to the top end of the output shaft of the servo motor one 17.

[0064] Specifically, in this embodiment, a motor bracket 16 is fixed to the top end of the test bench 2. A servo motor one 17 is fixedly installed on the top surface of the motor bracket 16. The servo motor one 17 has an output shaft extending forward, and a gear one 18 is fixed to the top end of the output shaft of the servo motor one 17, which is convenient for driving the gearbox 9 to rotate, so as to effectively monitor the vibration during the operation of the gearbox 9.

[0065] A power input shaft 20 and a power output shaft are provided on the surface of the gearbox 9. A gear two 19 is installed on the power input shaft on the surface of the gearbox 9, and the gear two 19 is meshed and connected with the gear one 18.

[0066] Specifically, in this embodiment, a power input shaft 20 and a power output shaft are provided on the surface of the gearbox 9. A gear two 19 is installed on the power input shaft 20 on the surface of the gearbox 9, and the gear two 19 is meshed and connected with the gear one 18, which is convenient for driving the gearbox 9 to rotate and work.

[0067] A plurality of support legs 1 are provided at the bottom end of the test bench 2 to increase the working height of the test bench 2, which is convenient for conforming to the height of the personnel and improving the simplicity of operation during the adjustment of the personnel.

[0068] Embodiment 3

[0069] Please refer to Figure 9 , which is another technical solution provided by the present invention. This embodiment has the same parts as the above-mentioned Embodiment 1, and the same parts will not be elaborated in this embodiment. The specific differences are as follows:

[0070] Based on the gearbox high-speed stage vibration mode testing device described in the above-mentioned Embodiment 1 and Embodiment 2, a gearbox high-speed stage vibration mode testing method is also provided, which specifically includes the following steps:

[0071] S1. Gearbox installation: Install the gearbox 9 to be detected on the top surface of the sliding seat 10, and lock and fix the gearbox 9 on the top surface of the sliding seat 10 through a nut on the locking screw 13;

[0072] S2. Horizontal sliding: Horizontally slide and convey the gearbox 9 installed on the top surface of the sliding seat 10 in step S1. Through the threaded transmission of the threaded lead screw 11 and the threaded hole 24, push the sliding seat 10 to move into the test port 6;

[0073] S3. Gear installation: Install the second gear 19 on the gearbox 9 that has moved into the test port 6 in step S2, and install the first gear 18 that is cooperatively connected with the second gear 19 on the output shaft of the first servo motor 17 at the top of the test bench 2;

[0074] S4. Monitor adjustment: Install and fix the monitor 7 on the surface of the gearbox 9 that stays in the test port 6 in step S3. Extend the push rod 22 outwards through the electric push rod 21, and push each fixed monitor 7 to press on the surface of the gearbox 9 to test parameters such as vibration, noise, and temperature generated during the operation of the gearbox 9;

[0075] S5. Auxiliary monitoring: Place each swing monitor 8 on the surface of the sector plate 3 in step S4 on the surface of the gearbox 9, so as to test parameters such as vibration, noise, and temperature at different positions on the surface of the gearbox 9.

[0076] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A high-speed vibration mode test device for a gearbox, comprising a test bench (2), characterized in that: The test bench (2) is set as a workbench on a horizontal plane. At the top of the test bench (2), a sector plate (3) standing upright on the top surface of the test bench (2) is fixed. A test opening (6) is provided in the middle of the sector plate (3). The test opening (6) is of a semi-circular arch structure. Below the test opening (6), a linear chute (14) with a linear structure is provided. A sliding seat (10) is slidably connected in the linear chute (14). At the top of the sliding seat (10), a gear box (9) is installed. The gear box (9) horizontally slides in the test opening (6) through the linear chute (14). On the inner wall of the test opening (6), several fixed monitors (7) that can independently and automatically expand and contract are provided. The several fixed monitors (7) are respectively a temperature monitor, a vibration detector, and a noise detector.

2. The high-speed stage vibration mode testing device for a gearbox according to claim 1, characterized in that: The fixed monitor (7) includes a motor chamber (15) provided inside the sector plate (3). On the surface of the motor chamber (15), an electric push rod (21) is fixedly installed. The electric push rod (21) extends downward with a push rod (22). The push rod (22) extends out of the inner wall surface of the test opening (6). The fixed monitor (7) is fixed at the top of the push rod (22) extending out of the inner wall surface of the test opening (6).

3. A high-speed stage vibration mode testing device for a gearbox according to claim 1, characterized in that: On the surface of the sector plate (3), hinge supports (4) are arranged at equal intervals in a circle. On the surface of each hinge support (4), a swing rod (5) is rotatably connected. At the top of each swing rod (5), a swing monitor (8) is provided.

4. A high-speed stage vibration mode testing device for a gearbox according to claim 1, characterized in that: At the bottom inside the linear chute (14), a threaded lead screw (11) is rotatably connected. The two ends of the threaded lead screw (11) are rotatably connected to threaded sleeves (12). On the surface of each threaded sleeve (12) at one end, the bottom end of the test bench (2) is fixed. At one end of the threaded lead screw (11), a servo motor two (23) is provided. The servo motor two (23) is fixedly connected to the threaded lead screw (11).

5. A high-speed stage vibration mode testing device for a gearbox according to claim 4, characterized in that: A through threaded hole (24) is provided in the middle of the sliding seat (10). The threaded hole (24) is threadedly connected to the surface of the threaded lead screw (11).

6. The high-speed stage vibration mode testing device for a gearbox according to claim 1, wherein: At the top of the test bench (2), a motor bracket (16) is fixed. On the top surface of the motor bracket (16), a servo motor one (17) is fixedly installed. The servo motor one (17) extends forward with an output shaft. At the top of the output shaft of the servo motor one (17), a gear one (18) is fixed.

7. A high-speed stage vibration mode testing device for a gearbox according to claim 6, characterized in that: On the surface of the gear box (9), a power input shaft (20) and a power output shaft are provided. On the power input shaft on the surface of the gear box (9), a gear two (19) is installed. The gear two (19) is meshed and connected to the gear one (18).

8. A high-speed stage vibration mode testing device for a gearbox according to claim 1, characterized in that: At the bottom end of the test bench (2), several support legs (1) are provided.

9. A high-speed stage vibration mode testing device for a gearbox according to claim 1, characterized in that: At the top of the sliding seat (10), a locking screw (13) is provided. The gear box (9) is installed on the locking screw (13) and is locked and fixed by a nut.

10. A high-speed stage vibration mode testing device for a gearbox according to claim 1, characterized in that: A gear box high-speed stage vibration mode test method is also provided, which specifically includes the following steps: S1. Gearbox installation: Install the gearbox (9) to be detected on the top surface of the sliding seat (10), and lock and fix the gearbox (9) on the top surface of the sliding seat (10) by installing it on the locking screw (13) with a nut; S2. Horizontal sliding: Horizontally slide and convey the gearbox (9) installed on the top surface of the sliding seat (10) in step S1. Through the threaded transmission of the threaded lead screw (11) and the threaded hole (24), push the sliding seat (10) to move into the test port (6); S3. Gear installation: Install the second gear (19) on the gearbox (9) that has moved into the test port (6) in step S2, and install the first gear (18) that is cooperatively connected with the second gear (19) on the output shaft of the first servo motor (17) at the top of the test bench (2); S4. Monitor adjustment: Install and fix the monitor (7) on the surface of the gearbox (9) that stays in the test port (6) in step S3. Extend the push rod (22) outwards through the electric push rod (21), and push each fixed monitor (7) to press on the surface of the gearbox (9) to test parameters such as vibration, noise, and temperature generated during the operation of the gearbox (9); S5. Auxiliary monitoring: Place each swing monitor (8) on the surface of the sector plate (3) in step S4 on the surface of the gearbox (9), so as to test parameters such as vibration, noise, and temperature at different positions on the surface of the gearbox (9).

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