Motor attenuation and aging detection device

Abstract

The invention relates to the technical field of motor detection, and particularly discloses a motor attenuation and aging detection device which comprises a test board, a mounting seat arranged on the test board, a power supply module, a torque sensor and a linkage adapter, the mounting seat is used for limiting a tested motor on the test board, the power supply module is connected with the tested motor, and the torque sensor is connected with the linkage adapter. The linkage adapter connects a rotating shaft of the detected motor with the torque sensor, and the torque sensor is used for detecting data of the rotating speed and the torque of the detected motor; the current regulator is connected with the power supply module and is used for regulating the output current value of the power supply module so as to control the rotating speed of the tested motor, and the central measurement and control system is connected with the torque sensor and the current regulator; the torque sensor is used for transmitting detected torque and rotating speed data to the central measurement and control system for processing and analysis, and the central measurement and control system processes the data of the input current value, the output torque and the rotating speed of the detected motor through a preset algorithm so as to evaluate the attenuation degree of the detected motor.

Description

Technical Field

[0001] The invention relates to the technical field of motor detection, and in particular discloses a motor attenuation and aging detection device. Background Art

[0002] After long-term use, the motor will experience performance degradation and aging, affecting its working efficiency and service life. Existing motor detection technologies are mostly focused on the basic parameters of the motor, such as current and voltage detection. However, for the comprehensive performance evaluation of the motor, including torque, speed and attenuation evaluation, the technical means are relatively single. In addition, the design of traditional motor detection equipment is not convenient enough, and a lot of time and energy is consumed during the disassembly and assembly of the motor, which limits its flexibility and efficiency in practical applications. Therefore, convenient detection equipment for motor performance degradation, especially devices that can effectively evaluate the relationship between the motor's input current, output torque and speed, is particularly important. Summary of the invention

[0003] In order to overcome the shortcomings and deficiencies in the prior art, an object of the present invention is to provide a motor attenuation and aging detection device to solve the technical problems that the motor disassembly and assembly is not convenient enough and the detection data is not comprehensive enough.

[0004] To achieve the above-mentioned purpose, a motor attenuation and aging detection device of the present invention comprises a test bench, a mounting seat arranged on the test bench, a power supply module, a torque sensor and a linkage adapter, wherein the mounting seat is used to limit the motor under test on the test bench, the power supply module is connected to the motor under test, and the linkage adapter is connected between the rotating shaft of the motor under test and the input shaft of the torque sensor;

[0005] It also includes a central measurement and control system and a current regulator. The current regulator is connected to the power supply module and is used to adjust the current value output by the power supply module to control the speed of the motor under test. The central measurement and control system is connected to the torque sensor and the current regulator. The torque sensor is used to detect and collect data on the torque and speed of the motor under test. The central measurement and control system processes the input current value, output torque, and speed data of the motor under test through a preset algorithm to evaluate the attenuation degree of the motor under test.

[0006] Furthermore, the linkage adapter includes a driving gear connected to the rotating shaft of the motor to be measured and a transmission member connected to the input end of the torque sensor, and the end of the transmission member away from the torque sensor is provided with a plurality of driven tooth grooves for meshing with the teeth of the driving gear, and the plurality of driven tooth grooves are arranged around the central axis of the transmission member.

[0007] Furthermore, the transmission member is provided with a accommodating cavity and a disassembly opening, the driven tooth groove, the accommodating cavity and the disassembly opening are interconnected, the rotating shaft of the motor under test enters the accommodating cavity through the disassembly opening and makes the rotation axis of the driving gear and the central axis of the driven tooth groove coincide with each other, and the driving gear and the driven tooth groove are meshed for transmission.

[0008] Furthermore, the transmission member includes a protective shell and a transmission plate. The interior of the protective shell is hollow to form the accommodating cavity. The driven tooth grooves and the disassembly and assembly openings are all arranged on the transmission plate. The transmission plate is arranged at one end of the protective shell close to the motor to be measured and covers part of the accommodating cavity. The transmission plate is detachably connected to the protective shell, and the end of the protective shell away from the transmission plate is used to connect with the input shaft of the torque sensor.

[0009] Furthermore, the detection device also includes a clamping mechanism, which includes a first support frame, a toggle rod and a pressure rod rotatably arranged on the first support frame, and the mounting seat is provided with a limiting groove for accommodating the motor under test. The first support frame is arranged on the test bench and is located on one side of the limiting groove, one end of the toggle rod is rotatably connected to the bottom of the first support frame, and one end of the pressure rod is rotatably connected to the upper part of the first support frame. The clamping mechanism also includes a first connecting rod, one end of the first connecting rod is rotatably connected to the middle part of the toggle rod, and the other end of the first connecting rod is rotatably connected to the pressure rod; the other end of the pressure rod is provided with a flexible pressure gasket, and the user rotates the toggle rod to press down the pressure gasket of the pressure rod via the first connecting rod to limit it on the mounting seat.

[0010] Furthermore, it also includes a first coupling, a transmission shaft is provided at one end of the transmission member away from the driven tooth groove, and the first coupling is connected between the transmission shaft and the input shaft of the torque sensor.

[0011] Furthermore, the test bench is provided with a magnetic powder brake and a brake controller connected to the magnetic powder brake, the magnetic powder brake is connected to the output shaft of the torque sensor, and the brake controller is used to adjust the current in the exciting coil in the magnetic powder controller to control the formation and strength of the magnetic powder chain, thereby controlling the brake to generate a braking torque to brake the motor under test.

[0012] Furthermore, the power supply module includes a fixed seat and a movable seat which is reciprocatingly arranged on the fixed seat. Two power supply probes are arranged on the movable seat. One ends of the two power supply probes are respectively connected to the positive and negative poles of the external power supply. The other ends of the two power supply probes are elastically telescopically arranged relative to the movable seat to be used for tightly fitting with the positive and negative pole pieces of the motor under test.

[0013] Furthermore, the power supply module also includes a telescopic mechanism, which includes a second support frame arranged on a fixed seat, a movable rod rotatably arranged on the second support frame, a push rod reciprocatingly arranged on the fixed seat, and a second connecting rod connected between the push rod and the movable rod. The second connecting rod is arc-shaped, and the push rod is fixedly connected to the movable seat. The user rotates the movable rod to make the second connecting rod link the push rod to reciprocate and drive the power supply probe on the movable seat to contact the motor under test.

[0014] Furthermore, the linkage adapter also includes a reducer installed in cooperation with the motor to be measured, the input end of the reducer is connected to the rotating shaft of the motor to be measured, and the output end of the reducer is connected to the driving gear.

[0015] Principle of the technical solution of the present invention: The present invention provides a motor attenuation and aging detection device, which combines components such as a test bench, a power supply module, a torque sensor, a linkage adapter and a central measurement and control system, and can realize comprehensive detection and evaluation of the attenuation state of the motor under test. The main working principle is to adjust the input current of the motor under test through a current regulator and monitor its corresponding output torque and speed. The central measurement and control system processes various parameter data through a preset algorithm to evaluate the attenuation degree of the motor. For example: the power supply module provides a 5V, 10mA working power supply for the motor under test. Under this condition, the rated speed of the motor under test is 800r / min. After 12 hours of continuous operation, the speed of the motor drops to 700r / min; if the speed of the motor under test still does not reach the rated speed under the power supply environment of 5V, 12mA, the central measurement and control system can determine that the performance of the motor under test is declining.

[0016] The beneficial effects of the present invention are as follows: through the dedicated linkage adapter and clamping mechanism, the installation and disassembly processes of the motor under test become simpler, reducing the user's operating technical requirements and improving the detection efficiency; comprehensively considering the input current, output torque and speed of the motor, it provides rich data support for evaluating the motor attenuation degree, and can more accurately reflect the health status of the motor; the data evaluation method integrated with the central measurement and control system makes the entire detection process more intelligent, reduces the need for manual intervention, and improves the accuracy of the experiment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the detection device of the present invention;

[0018] Figure 2 It is a schematic diagram of a partial three-dimensional structure of the detection device of the present invention;

[0019] Figure 3 It is a schematic diagram of the structure of the detection device of the present invention in a partially exploded state;

[0020] Figure 4It is a schematic diagram of the exploded structure of the linkage adapter of the present invention;

[0021] Figure 5 for Figure 4 A schematic diagram of the enlarged structure of part A;

[0022] Figure 6 It is a three-dimensional structural schematic diagram of the clamping mechanism of the present invention;

[0023] Figure 7 It is a schematic diagram of the three-dimensional structure of the power supply module of the present invention;

[0024] Figure 8 It is a three-dimensional structural schematic diagram of the telescopic mechanism of the present invention.

[0025] Reference numerals include:

[0026] 1. Test bench; 2. Mounting seat; 3. Power supply module; 4. Torque sensor; 5. Linkage adapter; 6. Current regulator; 7. Clamping mechanism; 8. First coupling; 81. Second coupling; 11. Magnetic powder brake; 12. Brake controller; 13. Buffer support pad; 14. Display screen; 15. Moving pulley; 16. Cooling fan; 21. Limiting groove; 31. Fixed seat; 32. Moving seat; 33. Power supply probe; 34. Telescopic mechanism; 3 41. Second support frame; 342. Movable rod; 343. Push rod; 344. Second connecting rod; 35. Cylindrical rod body; 51. Driving gear; 511. Anti-foolproof baffle; 52. Transmission member; 521. Protective shell; 522. Transmission plate; 53. Driven tooth groove; 54. Accommodation cavity; 55. Disassembly and assembly opening; 56. Transmission shaft; 57. Reducer; 71. First support frame; 72. Toggle rod; 73. Press rod; 74. Pressing gasket; 75. First connecting rod. DETAILED DESCRIPTION

[0027] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with embodiments and drawings. The contents mentioned in the implementation modes are not intended to limit the present invention.

[0028] See also Figures 1 to 8 As shown, a motor attenuation and aging detection device of the present invention comprises a test bench 1, a mounting seat 2, a power supply module 3, a torque sensor 4 and a linkage adapter 5 arranged on the test bench 1, wherein the mounting seat 2 is used to limit the motor under test on the test bench 1, the power supply module 3 is connected to the motor under test, and the linkage adapter 5 is connected between the rotating shaft of the motor under test and the input shaft of the torque sensor 4;

[0029] It also includes a central measurement and control system and a current regulator 6. The current regulator 6 is connected to the power supply module 3 and is used to adjust the current value output by the power supply module 3 to control the speed of the motor under test. The central measurement and control system is connected to the torque sensor 4 and the current regulator 6. The torque sensor 4 is used to detect and collect data on the torque and speed of the motor under test. The central measurement and control system processes the input current value, output torque, and speed data of the motor under test through a preset algorithm to evaluate the attenuation degree of the motor under test.

[0030] In this embodiment, a buffer support pad 13 and a movable pulley 14 are provided at the bottom of the test bench 1. The buffer support pad 13 is elastically retracted relative to the test bench 1 through a buffer spring, aiming to reduce the adverse vibration generated by the test bench 1 during operation; the setting of the movable pulley 14 can make the movement of the entire device more convenient; a display screen 14 connected to the central measurement and control system is installed above the test bench 1, and the display screen 14 can be used to display parameters such as the speed, parameters, and attenuation degree of the motor under test. The mounting seat 2 is arranged in a rectangular shape, and an arc-shaped groove or a square groove (i.e., the limiting groove 21 shown in the figure) is provided on the mounting seat 2 to adapt to motors of different shapes under test. The power supply module 3 provides power to the motor under test by means of a clip, and the current regulator 6 adjusts the voltage of the power supply and controls the output current value of the power supply.

[0031] The test bench 1 is a hollow rectangular frame, the interior of which is used to accommodate the electronic control components, connecting lines, etc. of the detection device. A cooling fan 16 is provided on one side of the test bench 1, i.e., the rectangular frame, to quickly take away the heat generated during the operation of the detection device, effectively reduce the working temperature of the equipment, make the test process smoother, and thus improve the test efficiency. This is crucial to maintain the normal operation of the test bench and extend its service life. The introduction of the linkage adapter 5 can reduce the torque transmission loss between the tested motor and the torque sensor 4, optimize the matching and improve the transmission efficiency. The central measurement and control system connects the torque sensor 4 and the current regulator 6 and is responsible for data collection, processing and analysis, and evaluates the attenuation degree of the motor through a preset algorithm.

[0032] In actual use, the motor under test is fixed on the mounting base 2, and the power supply module 3, the current regulator 6, the torque sensor 4 and the central control system are connected. The power supply module 3 provides power to the motor under test, and the current regulator 6 adjusts the current value to control the speed of the motor. The torque sensor 4 detects the torque and speed of the motor in real time and transmits the data to the central measurement and control system. The central measurement and control system uses a preset algorithm to evaluate the attenuation of the motor based on the input current value, output torque and speed data.

[0033] Specifically, the linkage adapter 5 includes a driving gear 51 connected to the rotating shaft of the motor under test and a transmission member 52 connected to the input end of the torque sensor 4. The end of the transmission member 52 away from the torque sensor 4 is provided with a plurality of driven tooth grooves 53 for meshing with the teeth of the driving gear 51. The plurality of driven tooth grooves 53 are arranged around the central axis of the transmission member 52. By adding the driving gear 51 to the motor under test so that it meshes with the driven tooth grooves 53 of the transmission member 52 to realize power transmission, when the motor under test is powered on and starts running, the driving gear 51 rotates to drive the transmission member 52 to move, and the plurality of driven tooth grooves 53 of the transmission member 52 mesh with the teeth of the driving gear 51 to transmit the rotational torque to the transmission member 52. The transmission member 52 transmits the torque and speed data of the motor under test to the torque sensor 4, and the torque sensor 4 converts it into an electrical signal and transmits it to the central measurement and control system. The central measurement and control system receives the data from the torque sensor 4 and combines it with the current data fed back by the current regulator 6, and evaluates the attenuation of the motor through a preset algorithm.

[0034] Specifically, the transmission member 52 is provided with a receiving cavity 54 and a disassembly opening 55, the driven tooth groove 53, the receiving cavity 54 and the disassembly opening 55 are interconnected, the rotating shaft of the motor under test enters the receiving cavity 54 through the disassembly opening 55 and makes the rotation axis of the driving gear 51 and the central axis of the driven tooth groove 53 coincide with each other, and the driving gear 51 is meshed with the driven tooth groove 53 for transmission. In this embodiment, the transmission member 52 is roughly cylindrical in shape, and a connecting shaft is provided at one end of the transmission member 52 away from the driven tooth groove 53 for connection with the input shaft of the torque sensor 4, the receiving cavity 54 is a through hole penetrating the body of the transmission member 52, and a plurality of driven tooth grooves 53 form through holes on the transmission member 52.

[0035] During the actual installation, the transmission member 52 is first connected to the torque sensor 4 through the connecting shaft, and then the motor to be tested is installed. The free end of the driving gear 51 is provided with an anti-foolproof baffle 511, and the diameter of the anti-foolproof baffle 511 is larger than the diameter of the tooth top circle of the driving gear 51, and the diameter of the tooth top circle of the driving gear 51 is larger than the diameter of the rotating shaft of the motor to be tested. When installing the motor to be tested, the transmission member 52 is rotated so that the disassembly opening 55 faces upward, and then the motor to be tested is placed on the mounting seat 2 (in this process, the rotating shaft of the motor to be tested passes through the disassembly opening 55 and enters the accommodating chamber 54 with the driving gear 51). At this time, the rotation axis of the driving gear 51 coincides with the central axis of the transmission member 52, and then the motor to be tested is moved so that the driving gear 51 and the driven tooth groove 53 are meshed. The anti-foolproof baffle 511 is intended to prevent the driving gear 51 from being disengaged from the driven tooth groove 53 due to excessive displacement of the motor to be tested.

[0036] Specifically, the transmission member 52 includes a protective shell 521 and a transmission plate 522. The protective shell 521 is hollow inside to form the accommodating chamber 54. The driven tooth groove 53 and the disassembly opening 55 are both arranged on the transmission plate 522. The transmission plate 522 is arranged at one end of the protective shell 521 close to the motor under test and covers part of the accommodating chamber 54. The transmission plate 522 is detachably connected to the protective shell 521. The end of the protective shell 521 away from the transmission plate 522 is used to connect with the input shaft of the torque sensor 4. The accommodating chamber 54 is used to accommodate the rotating shaft and the driving gear 51 of the motor under test to ensure that it can work stably. The protective shell 521 also provides a closed environment to protect the internal mechanical components from the external environment.

[0037] The transmission plate 522 and the protective shell 521 are fixed together by a detachable connection method, which is convenient for disassembly and maintenance. The connection method can be bolt fixing, snap connection or other mechanical connection methods, so that the operator can quickly disassemble the transmission plate 522 when necessary to inspect or replace the internal parts. In this embodiment, the transmission plate 522 and the protective shell 521 are fixed by bolts. The bolt fixing method is more stable and reliable, which can further ensure the transmission stability between the motor under test and the torque sensor 4, making the final test result more accurate.

[0038] Specifically, the detection device also includes a clamping mechanism 7, which includes a first support frame 71, a toggle rod 72 and a pressure rod 73 rotatably arranged on the first support frame 71, and the mounting seat 2 is provided with a limiting groove 21 for accommodating the motor to be tested. The first support frame 71 is arranged on the test bench 1 and is located on one side of the limiting groove 21, one end of the toggle rod 72 is rotatably connected to the bottom of the first support frame 71, and one end of the pressure rod 73 is rotatably connected to the upper part of the first support frame 71. The clamping mechanism 7 also includes a first connecting rod 75, one end of the first connecting rod 75 is rotatably connected to the middle part of the toggle rod 72, and the other end of the first connecting rod 75 is rotatably connected to the pressure rod 73; the free end of the pressure rod 73 is provided with a flexible pressing gasket 74, and the user rotates the toggle rod 72, and through the linkage of the first connecting rod 75, the flexible pressing gasket 74 of the pressure rod 73 is driven to press downward, thereby stably limiting the motor to be tested on the mounting seat 2.

[0039] The clamping mechanism 7 ensures that the motor under test is fixed and stable during the test process, reducing the test error caused by position offset; the flexible pressing pad 74 can effectively prevent the motor surface damage caused by hard contact and extend the service life of the motor; the clamping function can be achieved by simply operating the toggle rod 72, and the operation is simple and easy to understand, which is convenient for ordinary technicians to quickly master. In this embodiment, the free ends of the pressing pad 74 and the pressure rod 73 are detachably connected by bolt fasteners. This structure makes the pressing pad 74 applicable to motors of various sizes and models, and has good versatility and adaptability.

[0040] Specifically, it also includes a first coupling 8 and a second coupling 81. A transmission shaft 56 is provided at one end of the transmission member 52 away from the driven tooth groove 53. The transmission shaft 56 and the protective shell 521 are integrally formed by CNC machine tools; the first coupling 8 is connected between the transmission shaft 56 and the input shaft of the torque sensor 4, and the second coupling 81 is connected between the output shaft of the torque sensor 4 and the magnetic powder brake 11. The addition of the coupling allows relative movement and angle adjustment between the two, while transmitting torque and rotational movement, and can ensure the normal transmission of the motor under test even if there is a certain deviation during assembly.

[0041] Specifically, the test bench 1 is provided with a magnetic powder brake 11 and a brake controller 12 connected to the magnetic powder brake 11. The magnetic powder brake 11 is connected to the output shaft of the torque sensor 4. The magnetic powder brake 11 includes an inner rotor and an outer shell that are coaxially arranged and rotatably connected. A cavity for accommodating external magnetic powder is formed between the inner rotor and the outer shell. An excitation coil is provided on the inner rotor. The brake controller 12 is used to adjust the current in the excitation coil to control the magnetic powder to generate a magnetic powder chain. The magnetic powder chain is used to increase the friction between the inner rotor and the outer shell and then generate a braking torque to brake the motor under test. The addition of the brake controller 12 and the magnetic powder brake 11 can simulate various load conditions encountered by the motor in actual work, which is helpful to comprehensively evaluate the performance and reliability of the motor.

[0042] Specifically, the power supply module 3 includes a fixed seat 31, a movable seat 32 slidably arranged on the fixed seat 31, and the movable seat 32 is slidably arranged on the top of the fixed seat 31 through two cylindrical rods 35; two power supply probes 33 are provided at one end of the movable seat 32 away from the two rods, one end of the two power supply probes 33 is respectively connected to the positive and negative poles of the external power supply, and the other ends of the two power supply probes 33 are elastically telescopically arranged relative to the movable seat 32 to be used for tightly fitting with the positive and negative pole pieces of the motor under test. In this embodiment, the positive and negative poles of the external power supply are electrically connected to the power supply probes 33 through the jumper clip. In actual use, this structure is simple and easy to implement with high flexibility. The connection method of the jumper clip is easy to operate, which is convenient for users to quickly complete the connection between the external power supply and the power supply probes 33 without the need for special tools, thereby increasing the operability of the equipment.

[0043] The symmetric axes of the magnetic powder brake 11, the torque sensor 4, the mounting seat 2, the fixed seat 31 and the movable seat all overlap with each other. By aligning the symmetric axes of the magnetic powder brake 11, the torque sensor 4, the mounting seat 2, the fixed seat 31 and the movable seat, it is ensured that all key components are on the same axis. This can minimize the torque measurement error caused by the axis deviation and improve the overall centering accuracy of the system. The measurement accuracy of the torque sensor 4 depends on the centering of the system. The axis overlap design eliminates the deviation between the torque sensor 4 and other components, ensures the pure torque signal of the measurement, and does not require complex alignment operations when assembling the system. The components can be directly installed in sequence on the same axis, which simplifies the assembly process and improves production efficiency.

[0044] Specifically, the power supply module 3 also includes a telescopic mechanism 34, which includes a second support frame 341 arranged on the fixed seat 31, a movable rod 342 rotatably arranged on the second support frame 341, a push rod 343 reciprocatingly arranged on the fixed seat 31, and a second connecting rod 344 connected between the push rod 343 and the movable rod 342. The second connecting rod 344 is arc-shaped, and the arc-shaped second connecting rod 344 is connected between the movable rod 342 and the push rod 343. When the movable rod 342 rotates, the second connecting rod 344 will generate an arc motion, thereby pushing the push rod 343 to move back and forth in a straight line.

[0045] The user manually rotates the movable rod 342, and the rotation of the movable rod 342 is converted into a linear reciprocating motion of the push rod 343 through the arc motion of the second connecting rod 344. When the push rod 343 moves, the movable seat moves accordingly, driving the power supply probe 33 thereon to contact or separate the electrode of the motor under test. When the movable seat moves forward, the power supply probe 33 gradually approaches and eventually contacts the electrode of the motor under test, thereby realizing power transmission. On the contrary, when the movable seat retreats, the power supply probe 33 is detached from the electrode, cutting off the power transmission. The telescopic mechanism 34 converts the rotational motion into a linear reciprocating motion through a clever mechanical connection (arc design of the second connecting rod 344), thereby simplifying complex motion. This structure does not require a complex electrical control device, has a compact structure, and is easy to manufacture and maintain. In addition, this structure is suitable for motors of different sizes and shapes under test, and only needs to adjust the rotation amplitude of the movable rod 342 to adapt to different motor connection requirements, and has strong versatility and adaptability.

[0046] Specifically, the linkage adapter 5 also includes a reducer 57 installed in cooperation with the motor under test, the input end of the reducer 57 is connected to the rotating shaft of the motor under test, and the output end of the reducer 57 is connected to the driving gear 51. The rotating shaft of the motor under test is connected to the reducer 57 through the input end. After the motor under test is started, its high-speed, low-torque output is processed by the reducer 57 and becomes a low-speed, high-torque output at the output end. If the high-speed motor output is directly transmitted to the torque sensor 4, it may cause equipment wear or damage. Reducing the speed by the reducer 57 can effectively reduce the wear of the mechanical components in the detection device and extend its service life.

[0047] In addition, the reducer 57 reduces the rotation speed of the shaft of the motor under test, so that the torque sensor 4 can perform accurate measurements within a lower rotation speed range, which is conducive to obtaining more accurate torque and power data. The reduced rotation speed of the motor under test also reduces the vibration and noise of the system, improving the stability and reliability of the detection device during the test process.

[0048] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The content of this specification should not be understood as limiting the present invention.

Claims

1. A motor decay and aging detection device, characterized in that: The invention comprises a test bench (1), a mounting seat (2) arranged on the test bench (1), a power supply module (3), a torque sensor (4) and a linkage adapter (5), wherein the mounting seat (2) is used to limit the motor under test on the test bench (1), the power supply module (3) is connected to the motor under test, the linkage adapter (5) connects the rotating shaft of the motor under test and the input shaft of the torque sensor (4), and the torque sensor (4) is used to detect the data of the rotation speed and torque of the motor under test; The invention also comprises a central measurement and control system and a current regulator (6). The current regulator (6) is connected to the power supply module (3) and is used to adjust the output current value of the power supply module (3) so as to control the rotation speed of the motor under test. The central measurement and control system is connected to the torque sensor (4) and the current regulator (6). The torque sensor (4) is used to transmit the data of the detected torque and rotation speed to the central measurement and control system for processing and analysis. The central measurement and control system processes the data of the input current value, output torque and rotation speed of the motor under test through a preset algorithm to evaluate the attenuation degree of the motor under test.

2. The motor attenuation and aging detection device according to claim 1 is characterized in that: The linkage adapter (5) comprises a driving gear (51) connected to the rotating shaft of the motor to be measured and a transmission member (52) connected to the input end of the torque sensor (4); a plurality of driven tooth grooves (53) for meshing with the teeth of the driving gear (51) are provided at one end of the transmission member (52) away from the torque sensor (4); and the plurality of driven tooth grooves (53) are arranged around the central axis of the transmission member (52).

3. The motor decay and aging detection device according to claim 2 is characterized in that: The transmission member (52) has a receiving cavity (54) and a disassembly opening (55); the receiving cavity (54) is used to receive the driving gear (51) and the rotating shaft of the motor to be tested; the driven tooth groove (53), the receiving cavity (54) and the disassembly opening (55) are interconnected; the rotating shaft of the motor to be tested enters the receiving cavity (54) through the disassembly opening (55) and makes the rotating axis of the driving gear (51) and the rotating axis of the transmission member (52) coincide with each other; the driving gear (51) is used to mesh with the driven tooth groove (53) for transmission.

4. The motor decay and aging detection device according to claim 3 is characterized in that: The transmission member (52) comprises a protective shell (521) and a transmission plate (522); the protective shell (521) is hollow inside to form the accommodating chamber (54); the driven tooth groove (53) and the disassembly opening (55) are both arranged on the transmission plate (522); the transmission plate (522) is arranged at one end of the protective shell (521) close to the motor to be measured and covers part of the accommodating chamber (54); the transmission plate (522) is detachably connected to the protective shell (521); and the end of the protective shell (521) away from the transmission plate (522) is used to be connected to the input shaft of the torque sensor (4).

5. The motor decay and aging detection device according to claim 1, characterized in that: The detection device also includes a clamping mechanism (7), the clamping mechanism (7) includes a first support frame (71), a toggle rod (72) and a pressure rod (73) rotatably arranged on the first support frame (71), the mounting seat (2) is provided with a limiting groove (21) for accommodating the motor to be tested, the first support frame (71) is arranged on the test bench (1) and is located on one side of the limiting groove (21), one end of the toggle rod (72) is rotatably connected to the bottom of the first support frame (71), and one end of the pressure rod (73) is rotatably connected to the top of the first support frame (71); The clamping mechanism (7) further comprises a first connecting rod (75), one end of which is rotatably connected to the middle part of the toggle rod (72), and the other end of which is rotatably connected to the pressure rod (73); a flexible pressing pad (74) is provided at the free end of the pressure rod (73); when a user rotates the toggle rod (72), the pressing pad (74) of the pressure rod (73) is linked to the first connecting rod (75) to press down against the motor to be tested, thereby limiting its position on the mounting seat (2).

6. The motor decay and aging detection device according to claim 2, characterized in that: The detection device further comprises a first coupling (8), a transmission shaft (56) is provided at one end of the transmission member (52) away from the driven tooth groove (53), and the first coupling (8) is connected between the transmission shaft (56) and the input shaft of the torque sensor (4).

7. The motor decay and aging detection device according to claim 1, characterized in that: A magnetic powder brake (11) and a brake controller (12) connected to the magnetic powder brake (11) are rotatably arranged on the test bench (1); the magnetic powder brake (11) is connected to the output shaft of the torque sensor (4); the magnetic powder brake (11) comprises an inner rotor and an outer shell; the inner rotor and the outer shell are coaxially arranged and rotatably connected; a cavity for accommodating external magnetic powder is formed between the inner rotor and the outer shell; an excitation coil is arranged on the inner rotor; the brake controller (12) is used to adjust the current of the excitation coil to control the magnetic powder to generate a magnetic powder chain; the magnetic powder chain is used to increase the friction between the inner rotor and the outer shell, thereby generating a braking torque to brake the motor to be tested.

8. The motor decay and aging detection device according to claim 1, characterized in that: The power supply module (3) comprises a fixed seat (31), a movable seat (32) reciprocatingly arranged on the fixed seat (31), and two power supply probes (33) are arranged on the movable seat (32), one end of the two power supply probes (33) are respectively connected to the positive and negative poles of an external power source, and the other ends of the two power supply probes (33) are elastically telescopically arranged relative to the movable seat (32) to be tightly matched with the positive and negative pole pieces of the motor under test.

9. The motor decay and aging detection device according to claim 8, characterized in that: The power supply module (3) further comprises a telescopic mechanism (34), the telescopic mechanism (34) comprising a second support frame (341) arranged on the fixed seat (31), a movable rod (342) rotatably arranged on the second support frame (341), a push rod (343) reciprocatingly arranged on the fixed seat (31), and a second connecting rod (344) connected between the push rod (343) and the movable rod (342), the second connecting rod (344) being arranged in an arc shape, the free end of the push rod (343) being fixedly connected to the movable seat, and the user rotates the movable rod (342) to make the second connecting rod (344) and the push rod (343) move reciprocatingly, thereby driving the power supply probe (33) on the movable seat (32) to contact the positive and negative pole pieces of the motor to be tested to supply power to it.

10. The motor decay and aging detection device according to claim 2, characterized in that: The linkage adapter (5) further comprises a reducer (57) mounted in cooperation with the motor to be tested, wherein the input end of the reducer (57) is connected to the rotating shaft of the motor to be tested, and the output end of the reducer (57) is connected to the driving gear (51).

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