A platform integrated gearbox test machine

Abstract

The utility model discloses a platform integration formula gear box test machinery relates to gear box test technical field, including fixed base, the fixed base is fixed on the workbench top, the top of fixed base is fixed with the lateral support rib -in -panel that stands on the top of fixed base, the top of lateral support rib -in -panel is provided with the top support board that is horizontal fixed, the top of top support board is fixed with electric push rod, the electric push rod has the push rod that stretches out downward, the bottom of push rod is fixed with the lift box, the bottom of lift box is provided with the shaft sleeve that rotates. The utility model discloses through the reciprocating lift of lift box, is convenient for when dismantling gear box to give place operation, is convenient for when installing wheel box to carry out quick connection, the surface of shaft sleeve is provided with the spline hole of output shaft no.

Description

Technical Field

[0001] This utility model relates to the field of gearbox testing technology, specifically to a platform-integrated gearbox testing machine. Background Technology

[0002] Gearboxes are critical components in mechanical transmission systems, and their operating condition directly affects the performance and reliability of the entire system. Vibration issues are particularly prominent under high-speed operating conditions. To ensure the normal operation of gearboxes, vibration modal testing is essential. A high-speed gearbox vibration modal testing device, through the organic integration of excitation, measurement, and analysis systems, can effectively perform vibration modal testing on gearboxes. Through spectral analysis and modal analysis, the natural frequencies and mode shapes of the gearbox can be accurately identified, providing important reference data for gearbox design and maintenance.

[0003] Spectral analysis of the gearbox mainly includes Fourier transform: performing a Fourier transform on the acquired vibration signal to obtain a spectrum. Spectral characteristics: identifying the main frequency components in the spectrum, including natural frequencies and meshing frequencies. Modal analysis of the gearbox mainly includes modal parameter identification: identifying modal parameters such as the gearbox's natural frequencies, damping ratio, and mode shapes based on the spectral analysis results. Modal parameter verification: comparing the test results with the finite element calculation results to verify the accuracy of the test results.

[0004] Currently, gearbox testing methods mainly include single-point excitation: applying excitation at one point in the gearbox, suitable for testing simple structures; multi-point excitation: applying excitation simultaneously at multiple points in the gearbox, suitable for testing complex structures; and the selection of measurement points, choosing key parts of the gearbox (such as bearing housings, gear meshing points, and various parts of the gearbox housing) as measurement points. Measurements are taken at different locations in the gearbox to obtain comprehensive vibration information.

[0005] Traditionally, gearbox testing requires collecting various parameters during the gearbox's operation. Therefore, specialized testing machinery is needed to test the gearbox. In the traditional gearbox testing process, the gearbox is not easy to disassemble and assemble, the disassembly and reassembly of the gearbox's two shafts is troublesome, and the testing of various parameters needs to be completed on different testing machines, making the testing process very cumbersome. Therefore, there is a need to provide a platform-based integrated gearbox testing machine. Utility Model Content

[0006] In view of this, the purpose of this utility model is to provide a platform-integrated gearbox testing machine to solve the technical problems of traditional gearbox testing, which requires the collection of various parameters during the gearbox operation process. Therefore, specialized testing machines are required to test the gearbox. In the traditional gearbox testing process, the gearbox is not easy to disassemble and assemble, the disassembly and reassembly of the two shafts of the gearbox is troublesome, and the testing of various parameters needs to be completed on different testing machines, making the testing process very cumbersome.

[0007] To achieve the above objectives, this utility model employs the following technical solution: A platform-integrated gearbox testing machine includes a fixed base, which is fixed to the top surface of a workbench. A side support rib plate is fixed to the top of the fixed base and stands upright on the top surface of the fixed base. A top support plate is fixed horizontally at the top of the side support rib plate. An electric push rod is fixed to the top of the top support plate. A push rod extends downward from the electric push rod. A lifting box is fixed to the bottom of the push rod. A rotating shaft sleeve is provided at the bottom of the lifting box. The top of the fixed base is provided with a gearbox base, and the gearbox to be tested is installed on the top of the gearbox base. The gearbox has two rotating shafts, one of which is a gear shaft and the other is an output shaft. The output shaft is located at the top of the gearbox, and the gear shaft is located at the front of the gearbox.

[0008] As a preferred technical solution of this utility model, the second servo motor is located at the top of the fixed base in front of the gearbox and can slide back and forth on the top of the fixed base. The second servo motor has an output shaft extending backward. A drive gear is installed on the surface of the output shaft of the second servo motor. A driven gear is installed on the gear shaft of the gearbox and the driven gear meshes with the drive gear.

[0009] As a preferred technical solution of this utility model, the fixed base has a sleeve cavity inside, and the top surface of the fixed base has a sliding hole that passes through the sleeve cavity. A motor bracket is slidably connected in the sliding hole, and the servo motor is fixed to the top of the motor bracket.

[0010] As a preferred technical solution of this utility model, a threaded screw is rotatably connected inside the sleeve cavity, and a nut sleeve is helically connected to the surface of the threaded screw. The bottom end of the motor bracket is fixed to the surface of the nut sleeve, and a servo motor is fixedly installed on the front end face of the fixed base. The threaded screw is fixedly connected to the output shaft of the servo motor.

[0011] As a preferred embodiment of this invention, the elevator box is equipped with a miniature generator and an angular velocity sensor.

[0012] As a preferred embodiment of this invention, a light bulb is provided at the top of the elevator box.

[0013] As a preferred embodiment of this utility model, a display screen is provided on the right end face of the elevator box.

[0014] As a preferred technical solution of this utility model, ratchet checkers are symmetrically arranged on the bottom surfaces of the elevator car near the left and right sides of the elevator car, and a swing arm is rotatably connected to the surface of each ratchet checker.

[0015] As a preferred embodiment of this utility model, a vibration detector is provided at the top of one side of the swing arm.

[0016] As a preferred technical solution of this utility model, a noise detector is provided at the top of the swing arm on the other side.

[0017] This utility model is fixed to the top surface of a workbench via a fixed base. The workbench is a work surface or work platform, facilitating operation, installation, disassembly, adjustment, and testing. A side support rib is fixed to the top of the fixed base, standing upright on its top surface. A horizontally fixed top support plate is provided at the top of the side support rib, and an electric push rod is fixed to the top of the top support plate. A push rod extends downwards from the electric push rod, and a lifting housing is fixed to the bottom of the push rod. A rotating shaft sleeve is provided at the bottom of the lifting housing. The reciprocating lifting of the lifting housing facilitates clearance during gearbox disassembly and quick connection during gearbox installation. A spline hole for output shaft engagement is provided on the surface of the shaft sleeve, facilitating quick disassembly and installation.

[0018] This invention features a gearbox base at the top of a fixed base, with the gearbox to be tested mounted on the top of the gearbox base. The gearbox has two shafts: one is a gear shaft, and the other is an output shaft. The output shaft is located at the top of the gearbox, while the gear shaft is located at the front of the gearbox. Several threaded rods are located at the top of the gearbox base, and the bottom of the gearbox is mounted on the threaded rods and locked in place through threaded holes. This design improves the accuracy of vibration and noise data acquisition during gearbox testing.

[0019] This utility model features a second servo motor at the top of a fixed base, positioned in front of the gearbox. The second servo motor can slide back and forth on the top of the fixed base, facilitating quick power connection during gearbox installation. An output shaft extends rearward from the second servo motor, with a driving gear mounted on its surface. A driven gear is mounted on the gear shaft of the gearbox, meshing with the driving gear for quick power connection and easy power disconnection during rapid disassembly. The left-right and forward-backward sliding of the second servo motor enables quick disassembly and installation.

[0020] The fixed base has an internal sleeve cavity, and a sliding hole through the sleeve cavity is opened on the top surface of the fixed base. A motor bracket is slidably connected in the sliding hole. Servo motor 2 is fixed to the top of the motor bracket. A threaded screw is rotatably connected inside the sleeve cavity. A nut sleeve is helically connected to the surface of the threaded screw. The bottom end of the motor bracket is fixed to the surface of the nut sleeve. Servo motor 1 is fixedly installed on the front end of the fixed base. The threaded screw is fixedly connected to the output shaft of servo motor 1. Servo motor 1 drives the threaded screw to rotate, causing the nut sleeve to slide axially along the threaded screw surface. This causes the nut sleeve to drive the motor bracket to slide back and forth in the sliding hole, thereby realizing automatic connection and automatic disconnection. The threaded transmission of the threaded screw and nut sleeve enables servo motor 1 to self-lock when moved to any position, improving the firmness of the power connection.

[0021] Specifically, a light bulb is installed at the top of the lifting platform. Inside the lifting platform are a micro generator and an angular velocity sensor. The shaft sleeve is the power input component of the micro generator. Through the reciprocating lifting of the lifting platform, the shaft sleeve connects with the output shaft, and the rotation of the gearbox drives the micro generator to generate current. The current is displayed by the light bulb, thus confirming that the lifting platform is working normally. The angular velocity sensor detects the rotation speed and number of rotations of the shaft sleeve, and displays this information in real time on a display screen on the right side of the lifting platform, thereby testing the parameters of a portion of the gearbox's operation.

[0022] Specifically, ratchet checkers are symmetrically installed on the bottom surface of the elevator car near the left and right sides. Each ratchet checker is rotatably connected to a swing arm, with a vibration detector at the top of one swing arm and a noise detector at the top of the other swing arm. By swinging the swing arms on both sides of the bottom surface of the elevator car downwards, the vibration and noise detectors can monitor the gearbox surface in real time during operation, thereby obtaining the mechanical vibration and noise levels generated by the gearbox.

[0023] Other advantages, objectives, and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination and study, or may be learned from practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the right side of the platform-integrated gearbox testing machine of this utility model; Figure 2 This is a schematic diagram of the right cross-sectional structure of the platform-integrated gearbox testing machine of this utility model. Figure 3 This is a front view structural diagram of the platform-integrated gearbox testing machine of this utility model; Figure 4 This is a front view partial structural diagram of the ratchet check valve, swing arm, and vibration detector of this utility model; Figure 5 This is a front view partial structural diagram of the ratchet check valve, swing arm, and noise detector of this utility model; In the diagram: 1. Electric push rod; 2. Top support plate; 3. Side support rib; 4. Push rod; 5. Fixed base; 6. Servo motor 1; 7. Motor bracket; 8. Servo motor 2; 9. Drive gear; 10. Gear shaft; 11. Driven gear; 12. Output shaft 2; 13. Shaft sleeve; 14. Lifting box; 15. Display screen; 16. Illuminated bulb; 17. Gearbox base; 18. Gearbox; 19. Threaded screw; 20. Nut sleeve; 21. Sliding hole; 22. Sleeve sliding cavity; 23. Ratchet check; 24. Swing arm; 25. Vibration detector; 26. Noise detector. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0026] Therefore, the following 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 to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0028] In the above description of this utility model, it should be noted that the terms "one side," "the other side," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0029] Furthermore, terms such as "identical" do not imply that components must be absolutely identical; minor differences are permissible. The term "perpendicular" simply means that the positional relationship between components is more perpendicular than "parallel," not that the structure must be perfectly perpendicular; a slight tilt is acceptable. Example 1

[0030] Please see Figure 1-5 The present invention provides a technical solution: a platform-integrated gearbox testing machine, including a fixed base 5, the fixed base 5 being fixed to the top surface of the workbench, a side support rib 3 being fixed to the top of the fixed base 5 and standing upright on the top surface of the fixed base 5, a top support plate 2 being fixed horizontally at the top of the side support rib 3, an electric push rod 1 being fixed to the top of the top support plate 2, a push rod 4 extending downward from the electric push rod 1, a lifting box 14 being fixed to the bottom of the push rod 4, and a rotating shaft sleeve 13 being provided at the bottom of the lifting box 14; Specifically, in this embodiment, the present invention is fixed to the top surface of the workbench by a fixed base 5. The workbench is a work table or work platform, which facilitates operation, installation and disassembly, adjustment and testing. The top of the fixed base 5 is fixed with a side support rib plate 3 that stands upright on the top surface of the fixed base 5. The top of the side support rib plate 3 is provided with a horizontally fixed top support plate 2. The top of the top support plate 2 is fixed with an electric push rod 1. The electric push rod 1 extends downward with a push rod 4. The bottom end of the push rod 4 is fixed with a lifting box 14. The bottom end of the lifting box 14 is provided with a rotating shaft sleeve 13. The reciprocating lifting of the lifting box 14 facilitates the clearance operation when disassembling the gearbox 18 and facilitates quick connection when installing the gearbox. The surface of the shaft sleeve 13 is provided with a spline hole for connection with the output shaft 12, which facilitates quick disassembly and quick installation.

[0031] The top of the fixed base 5 is provided with a gearbox base 17, and the gearbox 18 to be tested is installed on the top of the gearbox base 17. The gearbox 18 is provided with two rotating shafts, one of which is a gear shaft 10 and the other is an output shaft 12. The output shaft 12 is located at the top of the gearbox 18, and the gear shaft 10 is located at the front end of the gearbox 18.

[0032] Specifically, in this embodiment, the present invention provides a gearbox base 17 at the top of the fixed base 5, and a gearbox 18 to be tested is mounted on the top of the gearbox base 17. The gearbox 18 has two rotating shafts, one of which is a gear shaft 10 and the other is an output shaft 12. The output shaft 12 is located at the top of the gearbox 18, and the gear shaft 10 is located at the front end of the gearbox 18. Several threaded rods are provided at the top of the gearbox base 17, and the bottom of the gearbox 18 is mounted on the threaded rods and locked through threaded holes. This helps to improve the accuracy of vibration and noise data acquisition during the testing of the gearbox 18.

[0033] Servo motor 2 8 is mounted on the top of fixed base 5 in front of gearbox 18. Servo motor 2 8 can slide back and forth on the top of fixed base 5. Servo motor 2 8 has an output shaft extending backward. A drive gear 9 is mounted on the surface of the output shaft of servo motor 2 8. A driven gear 11 is mounted on the gear shaft 10 of gearbox 18. The driven gear 11 is meshed with the drive gear 9.

[0034] Specifically, in this embodiment, the servo motor 28 is located at the top of the fixed base 5, in front of the gearbox 18. The servo motor 28 can slide back and forth at the top of the fixed base 5, facilitating quick power connection during gearbox installation. An output shaft extends backward from the servo motor 28, and a drive gear 9 is mounted on the surface of the output shaft. A driven gear 11 is mounted on the gear shaft 10 of the gearbox 18, and the driven gear 11 meshes with the drive gear 9, facilitating quick power connection and power disconnection during quick disassembly. Quick disassembly and quick installation are achieved by sliding the servo motor 28 left, right, back and forth.

[0035] The fixed base 5 has a sleeve cavity 22 inside, and a sliding hole 21 through the sleeve cavity 22 is opened on the top surface of the fixed base 5. A motor bracket 7 is slidably connected in the sliding hole 21, and a servo motor 8 is fixed to the top of the motor bracket 7.

[0036] A threaded screw 19 is rotatably connected inside the sleeve cavity 22. A nut sleeve 20 is helically connected to the surface of the threaded screw 19. The bottom end of the motor bracket 7 is fixed to the surface of the nut sleeve 20. A servo motor 6 is fixedly installed on the front end of the fixed base 5. The threaded screw 19 is fixedly connected to the output shaft of the servo motor 6.

[0037] Specifically, in this embodiment, the fixed base 5 has a sleeve cavity 22 inside, and a sliding hole 21 through the sleeve cavity 22 is opened on the top surface of the fixed base 5. A motor bracket 7 is slidably connected in the sliding hole 21, and a servo motor 8 is fixed to the top of the motor bracket 7. A threaded screw 19 is rotatably connected inside the sleeve cavity 22, and a nut sleeve 20 is helically connected to the surface of the threaded screw 19. The bottom end of the motor bracket 7 is fixed to the surface of the nut sleeve 20. A servo motor 6 is fixedly installed on the front end of the fixed base 5. The threaded screw 19 is fixedly connected to the output shaft of the servo motor 6. The servo motor 6 drives the threaded screw 19 to rotate, which drives the nut sleeve 20 to slide axially along the threaded screw 19 on the surface of the threaded screw 19. This causes the nut sleeve 20 to drive the motor bracket 7 to slide back and forth in the sliding hole 21, thereby realizing automatic connection and automatic disconnection. The threaded transmission of the threaded screw 19 and the nut sleeve 20 enables the servo motor 6 to self-lock when it is moved to any position, improving the firmness of the power connection.

[0038] Example 2 Please see Figure 1-5 This is another technical solution provided by the present invention. This embodiment has the same features as the above embodiment 1, and the similarities will not be described in this embodiment. The specific differences are as follows: A platform-integrated gearbox testing machine includes a fixed base 5, which is fixed to the top surface of a workbench. A side support rib 3 is fixed to the top of the fixed base 5 and is upright on the top surface of the fixed base 5. A top support plate 2 is fixed horizontally at the top of the side support rib 3. An electric push rod 1 is fixed to the top of the top support plate 2. A push rod 4 extends downward from the electric push rod 1. A lifting box 14 is fixed to the bottom of the push rod 4. A rotating shaft sleeve 13 is provided at the bottom of the lifting box 14. Specifically, in this embodiment, the present invention is fixed to the top surface of the workbench by a fixed base 5. The workbench is a work table or work platform, which facilitates operation, installation and disassembly, adjustment and testing. The top of the fixed base 5 is fixed with a side support rib plate 3 that stands upright on the top surface of the fixed base 5. The top of the side support rib plate 3 is provided with a horizontally fixed top support plate 2. The top of the top support plate 2 is fixed with an electric push rod 1. The electric push rod 1 extends downward with a push rod 4. The bottom end of the push rod 4 is fixed with a lifting box 14. The bottom end of the lifting box 14 is provided with a rotating shaft sleeve 13. The reciprocating lifting of the lifting box 14 facilitates the clearance operation when disassembling the gearbox 18 and facilitates quick connection when installing the gearbox. The surface of the shaft sleeve 13 is provided with a spline hole for connection with the output shaft 12, which facilitates quick disassembly and quick installation.

[0039] The elevator car 14 is equipped with a miniature generator and an angular velocity sensor. A light bulb 16 is mounted on the top of the elevator car 14. A display screen 15 is mounted on the right side of the elevator car 14.

[0040] Specifically, in this embodiment, a light bulb 16 is installed at the top of the lifting platform 14. A micro generator and an angular velocity sensor are installed inside the lifting platform 14. The shaft sleeve 13 is the power input component of the micro generator. Through the reciprocating lifting of the lifting platform 14, the shaft sleeve 13 connects with the output shaft 12, and the rotation of the gearbox 18 drives the micro generator to generate current. This current is illuminated by the light bulb 16, confirming that the lifting platform 14 is operating normally. The angular velocity sensor detects the rotation speed and number of rotations of the shaft sleeve 13, and displays this information in real time on the display screen 15 on the right side of the lifting platform 14, thus testing the parameters of a portion of the gearbox 18's operation.

[0041] Ratchet checkers 23 are symmetrically arranged on the bottom surfaces of the elevator car 14 near the left and right sides. Each ratchet checker 23 is rotatably connected to a swing arm 24. A vibration detector 25 is installed at the top of one swing arm 24. A noise detector 26 is installed at the top of the other swing arm 24.

[0042] Specifically, in this embodiment, ratchet check valves 23 are symmetrically arranged on the bottom surfaces of the elevator car 14 near the left and right sides. Each ratchet check valve 23 is rotatably connected to a swing arm 24, with a vibration detector 25 at the top of one swing arm 24 and a noise detector 26 at the top of the other swing arm 24. By swinging the swing arms 24 on both sides of the bottom surface of the elevator car 14 downwards, both the vibration detector 25 and the noise detector 26 can monitor the surface of the gearbox 18 in real time during operation, thereby obtaining the mechanical vibration and noise monitoring status generated by the gearbox 18 during operation.

[0043] Among them, the vibration detector 25 is an existing technology. A vibration sensor is a device that can convert mechanical vibration signals (such as displacement, velocity, and acceleration) into electrical signals, and is widely used in fields such as mechanical condition monitoring, fault diagnosis, and structural health monitoring. Its core principles include: piezoelectric effect: materials generate electric charge when subjected to force (such as piezoelectric ceramics). Electromagnetic induction: a coil cuts magnetic field lines in a magnetic field to generate current (such as eddy current). Optical principle: measuring vibration displacement through optical interference or laser vibration measurement technology.

[0044] The vibration detector 25 uses a displacement velocity amplitude vibration sensor manufactured by the Weite Intelligent brand. It has the function of monitoring vibrations of motors, water pumps, and gearboxes and is waterproof. The model number is WT-VB01-485.

[0045] The noise detector 26 uses a SOONSALL brand stainless steel RS485 industrial-grade directional noise sensor, model XM8765, as its noise monitoring device.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A platform-integrated gearbox testing machine, comprising a fixed base (5), characterized in that: The fixed base (5) is fixed to the top surface of the workbench. The top of the fixed base (5) is fixed with a side support rib (3) that stands upright on the top surface of the fixed base (5). The top of the side support rib (3) is provided with a horizontally fixed top support plate (2). The top of the top support plate (2) is fixed with an electric push rod (1). The electric push rod (1) extends downward with a push rod (4). The bottom of the push rod (4) is fixed with a lifting box (14). The bottom of the lifting box (14) is provided with a rotating shaft sleeve (13). The top of the fixed base (5) is provided with a gearbox base (17), and the top of the gearbox base (17) is provided with a gearbox (18) to be tested. The gearbox (18) is provided with two rotating shafts, one of which is a gear shaft (10) and the other is an output shaft (12). The output shaft (12) is located at the top of the gearbox (18), and the gear shaft (10) is located at the front end of the gearbox (18).

2. The platform-integrated gearbox testing machine according to claim 1, characterized in that: The top of the fixed base (5) is provided with a servo motor 2 (8). The servo motor 2 (8) is located in front of the gearbox (18) at the top of the fixed base (5), and the servo motor 2 (8) can slide back and forth at the top of the fixed base (5). The servo motor 2 (8) has an output shaft extending backward. The surface of the output shaft of the servo motor 2 (8) is equipped with a drive gear (9). The gear shaft (10) of the gearbox (18) is equipped with a driven gear (11). The driven gear (11) meshes with the drive gear (9).

3. The platform-integrated gearbox testing machine according to claim 2, characterized in that: The fixed base (5) has a sleeve cavity (22) inside, and a sliding hole (21) through the sleeve cavity (22) is opened on the top surface of the fixed base (5). A motor bracket (7) is slidably connected in the sliding hole (21), and the second servo motor (8) is fixed to the top of the motor bracket (7).

4. The platform-integrated gearbox testing machine according to claim 3, characterized in that: The sleeve cavity (22) is rotatably connected to a threaded screw (19), and a nut sleeve (20) is helically connected to the surface of the threaded screw (19). The bottom end of the motor bracket (7) is fixed to the surface of the nut sleeve (20). A servo motor (6) is fixedly installed on the front end face of the fixed base (5). The threaded screw (19) is fixedly connected to the output shaft of the servo motor (6).

5. The platform-integrated gearbox testing machine according to claim 1, characterized in that: The elevator box (14) is equipped with a micro generator and an angular velocity sensor.

6. The platform-integrated gearbox testing machine according to claim 5, characterized in that: The top of the elevator car (14) is equipped with a light bulb (16).

7. The platform-integrated gearbox testing machine according to claim 6, characterized in that: The right end face of the elevator car (14) is provided with a display screen (15).

8. The platform-integrated gearbox testing machine according to claim 1, characterized in that: Ratchet checkers (23) are symmetrically arranged on the bottom surfaces of the elevator car (14) near the left and right sides of the elevator car (14), and each ratchet checker (23) is rotatably connected to a swing arm (24).

9. The platform-integrated gearbox testing machine according to claim 8, characterized in that: A vibration detector (25) is provided at the top of the swing arm (24) on one side.

10. The platform-integrated gearbox testing machine according to claim 8, characterized in that: A noise detector (26) is provided at the top of the swing arm (24) on the other side.

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