A three-phase asynchronous motor test device and a three-phase asynchronous motor test method

Abstract

This invention discloses a testing device and method for a three-phase asynchronous motor, including a base and a testing platform. The testing platform is located on the left side of the base, and the left side of the base is connected to the testing platform via a connecting rod. A magnetic powder brake and a torque-speed sensor are fixedly connected to the upper part of the testing platform. The magnetic powder brake and the torque-speed sensor are distributed sequentially from left to right. The left end of the torque-speed sensor is connected to the magnetic powder brake via a second coupling, and the right end of the torque-speed sensor is connected to the output end of the three-phase asynchronous motor under test via a first coupling. A rotating mechanism is provided inside the base, and a disk is provided at the upper end of the base. The base is connected to the disk via the rotating mechanism. A moving mechanism is provided inside the disk, and four sets of moving mechanisms are provided. This invention can continuously test three-phase asynchronous motors, thereby improving testing efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of testing devices, and in particular to a testing device and a testing method for a three-phase asynchronous motor. Background Art

[0002] The three-phase asynchronous motor is a type of induction motor. It is a type of motor that is powered by 380V three-phase AC current (phase difference of 120 degrees) at the same time. Since the rotor and stator rotating magnetic field of the three-phase asynchronous motor rotate in the same direction and at different speeds, there is a slip rate, so it is called a three-phase asynchronous motor. The speed of the rotor of the three-phase asynchronous motor is lower than the speed of the rotating magnetic field. The rotor winding generates electromotive force and current due to the relative motion between the rotor winding and the magnetic field, and interacts with the magnetic field to generate electromagnetic torque to achieve energy conversion. After the three-phase asynchronous motor is manufactured, a test device is needed to test it to see if it meets the use standards.

[0003] When measuring the performance parameters of the motor such as voltage, current, torque, speed, input and output power, and efficiency, the existing test device installs the three-phase asynchronous motor to be tested on the test bench, and then connects the output end of the three-phase asynchronous motor to the connection end of the test device, so that the test of the three-phase asynchronous motor can be realized. Although the purpose of the test is achieved in this way, since there is only one installation station, when testing the next three-phase asynchronous motor, the previous three-phase asynchronous motor needs to be removed first, so that the next three-phase asynchronous motor can be tested conveniently, which will prolong the test time of the three-phase asynchronous motor, thereby affecting the test efficiency. Therefore, it is necessary to design a test device for the three-phase asynchronous motor. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a testing device and a testing method for a three-phase asynchronous motor.

[0005] In order to achieve the above-mentioned object, the present invention adopts the following technical scheme: a test device for a three-phase asynchronous motor, comprising a base and a test bench, wherein the test bench is located on the left side of the base, the left side of the base is connected to the test bench through a connecting rod, a magnetic powder brake and a torque speed sensor are fixedly connected to the upper end of the test bench, the magnetic powder brake and the torque speed sensor are sequentially distributed from left to right, the left end of the torque speed sensor is connected to the magnetic powder brake through a second coupling, and the right end of the torque speed sensor is connected to the output end of the three-phase asynchronous motor body to be tested through a first coupling;

[0006] A rotating mechanism is arranged inside the base, a disc is arranged on the upper end of the base, and the base is connected to the disc through the rotating mechanism; a moving mechanism is arranged inside the disc, and four groups of the moving mechanisms are arranged, and two groups of transmission components, a three-phase asynchronous motor body and two pressure plates are arranged on the upper end of each group of the moving mechanisms, and the two pressure plates are symmetrically distributed on both sides of the upper end of the three-phase asynchronous motor body, and an adjusting component is arranged on each group of the transmission components, and the transmission component is connected to the pressure plate through the adjusting component.

[0007] As a further description of the above technical solution:

[0008] The rotating mechanism includes a servo motor, a rotating cylinder, gears and teeth. The servo motor is fixedly connected to the left side of the base, and the output end of the servo motor is fixedly connected to the gear. The base is rotatably connected to a rotating cylinder inside, the upper end of the rotating cylinder is fixedly connected to a disc, and the circumferential surface of the rotating cylinder is fixedly connected to teeth, which mesh with the gears.

[0009] As a further description of the above technical solution:

[0010] The moving mechanism includes a moving seat, an electric telescopic rod, a fixed frame, a slider and a pushing plate. The moving seat is slidably connected inside the disc, and the lower end of the moving seat is fixedly connected to the slider; the bottom end of the base is fixedly connected to the fixed frame, and the right side of the fixed frame is fixedly connected to the electric telescopic rod. The extended end of the electric telescopic rod passes through the fixed frame and is slidably connected to the fixed frame. The extended end of the electric telescopic rod is fixedly connected to the pushing plate, and the pushing plate cooperates with the slider.

[0011] As a further description of the above technical solution:

[0012] A second sliding hole is opened on the upper end surface of the disc, the moving seat is located inside the second sliding hole and is slidably connected to the second sliding hole, and the end surface of the moving seat is in a cross shape.

[0013] As a further description of the above technical solution:

[0014] A limiting track is fixedly connected to the bottom end of the base. The limiting track is cylindrical and is slidably connected to the slider. The center of the limiting track is concentric with the center of the rotating cylinder.

[0015] As a further description of the above technical solution:

[0016] A notch is formed on the circumferential surface of the limiting track, and the notch corresponds to the push plate. The push plate is in an arc shape, and the center of the push plate is concentric with the center of the limiting track.

[0017] As a further description of the above technical solution:

[0018] A positioning column is fixedly connected to the upper end of the movable seat, and the positioning column corresponds to the mounting hole of the three-phase asynchronous motor body.

[0019] As a further description of the above technical solution:

[0020] The transmission assembly includes a support frame, a rotating rod, a first sliding hole, a sliding rod, a moving rod and a transmission rod, the upper end of the moving seat is fixedly connected to the support frame on both sides, the supporting frame is rotatably connected inside the supporting frame, the rotating rod is opened on the surface of the rotating rod, and the sliding rod is slidably connected inside the first sliding hole; the moving rod is slidably connected inside the two sides of the moving seat, the moving rod and the sliding rod are fixedly connected, the lower end of the moving rod passes through the moving seat, the lower end of the moving rod is rotatably connected to the transmission rod, and the end of the transmission rod away from the moving rod is rotatably connected to the rotating cylinder.

[0021] As a further description of the above technical solution:

[0022] The adjustment assembly includes a threaded rod, a handle and a guide rod. The internal thread of the rotating rod away from the moving rod is connected to the threaded rod, the threaded rod passes through the rotating rod, the threaded rod is rotatably connected to the pressure plate, and the end of the threaded rod away from the pressure plate is fixedly connected to the handle; the internal sliding connection of the rotating rod away from the moving rod end is connected to the guide rod, and the guide rod is fixedly connected to the pressure plate.

[0023] A testing method for a three-phase asynchronous motor testing device, using the above-mentioned three-phase asynchronous motor testing device, comprises the following steps:

[0024] S1: Place the three-phase asynchronous motor to be tested on a moving seat;

[0025] S2: Using a rotating mechanism to rotate the three-phase asynchronous motor to be tested to the position of the testing table;

[0026] S3: The moving mechanism works to drive the three-phase asynchronous motor to be tested to approach the first coupling, and uses the first coupling and the torque and speed sensor;

[0027] S4: Power on the three-phase asynchronous motor to be tested, and test the three-phase asynchronous motor with the cooperation of the torque speed sensor and the magnetic powder brake.

[0028] The present invention has the following beneficial effects:

[0029] 1. Compared with the prior art, the testing device and testing method of the three-phase asynchronous motor are provided with a rotating mechanism, a moving mechanism and a disc. When the three-phase asynchronous motor is tested, the rotating mechanism works to drive the three-phase asynchronous motor on the moving mechanism to rotate, so that the three-phase asynchronous motor moves to the detection platform position. Then the moving mechanism works to drive the three-phase asynchronous motor to approach the torque speed sensor, so as to facilitate the connection between the output end of the three-phase asynchronous motor and the first coupling. After the output end of the three-phase asynchronous motor is connected to the torque speed sensor through the first coupling, the three-phase asynchronous motor is energized. With the cooperation of the first coupling, the torque speed sensor, the second coupling and the magnetic powder brake, the three-phase asynchronous motor can be tested. After the test is completed, the first coupling is disconnected from the output end of the three-phase asynchronous motor. Then the moving mechanism works in the reverse direction to drive the three-phase asynchronous motor away from the first coupling. Then the rotating mechanism continues to work to move the tested three-phase asynchronous motor away from the detection platform, and also drives the untested three-phase asynchronous motor to approach the detection platform. In this way, the three-phase asynchronous motor can be tested continuously, thereby improving the test efficiency.

[0030] 2. Compared with the prior art, the testing device and testing method of the three-phase asynchronous motor are provided with a supporting frame, a rotating rod, a first sliding hole, a sliding rod, a moving rod and a transmission rod. As the moving seat approaches the testing platform, the moving rod can be driven to move upward with the cooperation of the transmission rod, and then the rotating rod can be driven to rotate upward with the cooperation of the sliding rod and the first sliding hole. As the rotating rod rotates upward, the pressure plate can be driven to approach the three-phase asynchronous motor with the cooperation of the adjusting component, and then the three-phase asynchronous motor can be fixed with the cooperation of the moving seat, so that the three-phase asynchronous motor does not need to be fixed with bolts when being fixed, thereby facilitating the fixing of the three-phase asynchronous motor on the moving seat, which is beneficial to improving the installation efficiency of the three-phase asynchronous motor.

[0031] 3. Compared with the prior art, the testing device and testing method of the three-phase asynchronous motor, by setting a threaded rod, a handle and a guide rod, when the position of the pressure plate needs to be adjusted, the handle is turned, and the pressure plate can be driven to move under the action of the threaded rod, and then the pressure plate can be stably moved with the cooperation of the guide rod, which is conducive to the pressure plate pressing on the three-phase asynchronous motor, so that the three-phase asynchronous motor can be stably fixed. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the structure of the present invention from the first viewing angle as a whole;

[0033] Figure 2 It is a schematic diagram of the structure of the second viewing angle of the whole invention;

[0034] Figure 3 For the present invention Figure 2 Enlarged view of part A in the middle;

[0035] Figure 4 It is a schematic diagram of the structure of the present invention after rear section;

[0036] Figure 5 For the present invention Figure 4 Enlarged view of part B;

[0037] Figure 6 It is a schematic diagram of the structure of the present invention after looking up at the cross section;

[0038] Figure 7 For the present invention Figure 6 Enlarged view of part C in the middle;

[0039] Figure 8 This is a schematic diagram of the internal structure of the base of the present invention;

[0040] Fig. 9 It is a schematic diagram of the structure of the disc and the rotating cylinder of the present invention;

[0041] Fig.10 It is a structural schematic diagram of the mobile seat of the present invention.

[0042] Legend:

[0043] 1. Base; 2. Test bench; 3. Connecting rod; 4. Rotating mechanism; 401. Servo motor; 402. Rotating cylinder; 403. Gear; 404. Tooth; 5. Disc; 6. Moving mechanism; 601. Moving seat; 602. Electric telescopic rod; 603. Fixed frame; 604. Sliding block; 605. Push plate; 7. Transmission assembly; 701. Support frame; 702. Rotating rod; 703. First sliding hole; 704. Sliding rod; 705. Moving rod; 706. Transmission rod; 8. Adjusting assembly; 801. Threaded rod; 802. Handle; 803. Guide rod; 9. Pressing plate; 10. Three-phase asynchronous motor body; 11. First coupling; 12. Torque and speed sensor; 13. Second coupling; 14. Magnetic powder brake; 15. Second sliding hole; 16. Positioning column; 17. Defined track; 18. Notch. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] Reference Figure 1-10The present invention provides a three-phase asynchronous motor test device, comprising a base 1 and a test bench 2, wherein the test bench 2 is located on the left side of the base 1, and the left side of the base 1 is connected to the test bench 2 through a connecting rod 3, and a magnetic powder brake 14 and a torque speed sensor 12 are fixedly connected to the upper end of the test bench 2, and the magnetic powder brake 14 and the torque speed sensor 12 are sequentially distributed from left to right, and the left end of the torque speed sensor 12 is connected to the magnetic powder brake 14 through a second coupling 13, and the right end of the torque speed sensor 12 is connected to the output end of the three-phase asynchronous motor body 10 to be tested through a first coupling 11;

[0046] A rotating mechanism 4 is arranged inside the base 1, a disc 5 is arranged on the upper end of the base 1, and the base 1 is connected to the disc 5 through the rotating mechanism 4; a moving mechanism 6 is arranged inside the disc 5, and four groups of moving mechanisms 6 are arranged, and two groups of transmission components 7, a three-phase asynchronous motor body 10 and two pressure plates 9 are arranged on the upper end of each group of moving mechanisms 6, and the two pressure plates 9 are symmetrically distributed on both sides of the upper end of the three-phase asynchronous motor body 10, and each group of transmission components 7 is provided with an adjustment component 8, and the transmission component 7 is connected to the pressure plate 9 through the adjustment component 8.

[0047] Specifically, when in use, first use the adjustment component 8 to adjust the position of the pressure plate 9, so as to facilitate the pressure plate 9 to stably press the three-phase asynchronous motor. After adjusting the position of the pressure plate 9, the three-phase asynchronous motor to be tested is installed on the moving mechanism 6. Since four groups of moving mechanisms 6 are provided, when the moving mechanism 6 is located at the position of the detection table 2, it is convenient to test the three-phase asynchronous motor on the moving mechanism 6. When the moving mechanism 6 is located at the rear side of the disc 5, it is convenient to remove the tested three-phase asynchronous motor. When the moving mechanism 6 is located on the right side of the disc 5, it is convenient to install the three-phase asynchronous motor to be tested. When the moving mechanism 6 is located at the front side of the disc 5, the three-phase asynchronous motor is in a waiting stage. After the three-phase asynchronous motor is installed, the rotating mechanism 4 works to drive the disc 5 to rotate. As the disc 5 rotates, the three-phase asynchronous motor on the moving mechanism 6 can be driven to move, so as to facilitate the movement of the three-phase asynchronous motor to the detection table 2 position. After the three-phase asynchronous motor reaches the detection position, the moving mechanism 6 works to drive the three-phase asynchronous motor to approach the torque and speed sensor 12, so as to facilitate the connection between the output end of the three-phase asynchronous motor and the first coupling 11; as the moving mechanism 6 works, the pressure plate 9 can be driven to approach the three-phase asynchronous motor under the cooperation of the transmission component 7 and the adjustment component 8, so as to realize the pressing and fixing of the three-phase asynchronous motor, which is beneficial to the testing of the three-phase asynchronous motor. After the output end of the three-phase asynchronous motor is connected to the torque and speed sensor 12 through the first coupling 11, the three-phase asynchronous motor is energized. With the cooperation of the first coupling 11, the torque and speed sensor 12, the second coupling 13 and the magnetic powder brake 14, the three-phase asynchronous motor can be tested. After the test is completed, the first coupling 11 is disconnected from the output end of the three-phase asynchronous motor, and then the moving mechanism 6 works in the reverse direction to drive the three-phase asynchronous motor away from the first coupling 11. Then the rotating mechanism 4 continues to work to move the tested three-phase asynchronous motor away from the test bench 2, and also drives the untested three-phase asynchronous motor to approach the test bench 2. In this way, the three-phase asynchronous motor can be tested continuously, thereby improving the test efficiency.

[0048] The rotating mechanism 4 includes a servo motor 401, a rotating cylinder 402, a gear 403 and teeth 404. The servo motor 401 is fixedly connected to the left side of the base 1, and the output end of the servo motor 401 is fixedly connected to the gear 403; the rotating cylinder 402 is rotatably connected inside the base 1, and the upper end of the rotating cylinder 402 is fixedly connected to the disk 5. The circumferential surface of the rotating cylinder 402 is fixedly connected to the teeth 404, and the teeth 404 are meshed with the gear 403. When working, the servo motor 401 works, and at this time, the rotating cylinder 402 can be driven to rotate inside the base 1 with the cooperation of the gear 403 and the teeth 404, thereby driving the disk 5 to rotate, so that it is convenient to continuously test the three-phase asynchronous motor.

[0049] The moving mechanism 6 includes a moving seat 601, an electric telescopic rod 602, a fixed frame 603, a slider 604 and a push plate 605. The moving seat 601 is slidably connected inside the disk 5, and the lower end of the moving seat 601 is fixedly connected to the slider 604; the bottom end of the base 1 is fixedly connected to the fixed frame 603, and the right side of the fixed frame 603 is fixedly connected to the electric telescopic rod 602. The extended end of the electric telescopic rod 602 passes through the fixed frame 603 and is slidably connected to the fixed frame 603. The extended end of the electric telescopic rod 602 is fixedly connected to the push plate 605, and the push plate 605 cooperates with the slider 604. When working, when the moving seat 601 reaches the position of the detection platform 2, the push plate 605 is just located inside the slider 604, and then the electric telescopic rod 602 is extended. At this time, the moving seat 601 can be driven to approach the detection platform 2 under the cooperation of the push plate 605 and the slider 604, so that the output end of the three-phase asynchronous motor is conveniently connected to the torque speed sensor 12 through the first coupling 11.

[0050] A second sliding hole 15 is provided on the upper end surface of the disc 5, and the movable seat 601 is located inside the second sliding hole 15 and is slidably connected to the second sliding hole 15. The end surface of the movable seat 601 is in a cross shape. When working, the second sliding hole 15 is provided, and the movable seat 601 is convenient to move under the action of the second sliding hole 15. At the same time, since the end surface of the movable seat 601 is in a cross shape, the movable seat 601 can be stably moved horizontally.

[0051] A limiting track 17 is fixedly connected to the bottom end of the base 1. The limiting track 17 is cylindrical and is slidably connected to the slider 604. The center of the limiting track 17 is concentric with the center of the rotating cylinder 402. During operation, by setting the limiting track 17, after the slider 604 reaches the limiting track 17, as the disc 5 rotates, the slider 604 can be driven to slide on the limiting track 17, so that the slider 604 can only perform circular motion but not horizontal motion, which is conducive to the cooperation between the slider 604 and the push plate 605.

[0052] A notch 18 is provided on the circumferential surface of the limiting track 17, and the notch 18 corresponds to the push plate 605. The push plate 605 is in an arc shape, and the center of the push plate 605 is concentric with the center of the limiting track 17. During operation, by setting the notch 18, the push plate 605 can be stored under the action of the notch 18. When the test is completed, the electric telescopic rod 602 retracts to drive the push plate 605 to move away from the test table 2, so that the push plate 605 is stored inside the notch 18, which facilitates the sliding of the slider 604 on the limiting track 17.

[0053] The upper end of the movable seat 601 is fixedly connected with a positioning column 16, and the positioning column 16 corresponds to the mounting hole of the three-phase asynchronous motor body 10. During operation, by setting the positioning column 16, when the three-phase asynchronous motor body 10 is installed, the mounting hole on the three-phase asynchronous motor body 10 corresponds to the positioning column 16, so that the preliminary limitation of the three-phase asynchronous motor body 10 is achieved, which is conducive to the later pressing and fixing of the three-phase asynchronous motor body 10.

[0054] The transmission assembly 7 includes a support frame 701, a rotating rod 702, a first sliding hole 703, a sliding rod 704, a moving rod 705 and a transmission rod 706. The support frame 701 is fixedly connected to both sides of the upper end of the moving seat 601. The rotating rod 702 is rotatably connected inside the support frame 701. The first sliding hole 703 is opened on the surface of the rotating rod 702. The sliding rod 704 is slidably connected inside the first sliding hole 703; the moving rod 705 is slidably connected to the inside of the moving seat 601 on both sides. The moving rod 705 is fixedly connected to the sliding rod 704. The lower end of the moving rod 705 passes through the moving seat 601. The lower end of the moving rod 705 is rotatably connected to the transmission rod 706. The end of the transmission rod 706 away from the moving rod 705 is connected to the rotating cylinder 4 02 rotation connection, when working, as the moving seat 601 approaches the direction of the detection table 2, the moving rod 705 can be driven to move upward with the cooperation of the transmission rod 706, and then the rotating rod 702 can be driven to rotate upward with the cooperation of the slide bar 704 and the first slide hole 703. As the rotating rod 702 rotates upward, the pressure plate 9 can be driven to approach the three-phase asynchronous motor with the cooperation of the adjustment component 8, and then the three-phase asynchronous motor can be fixed with the cooperation of the moving seat 601, so that the three-phase asynchronous motor does not need to be fixed with bolts when fixed, thereby facilitating the fixing of the three-phase asynchronous motor on the moving seat 601, which is beneficial to improving the installation efficiency of the three-phase asynchronous motor.

[0055] The adjusting assembly 8 comprises a threaded rod 801, a handle 802 and a guide rod 803. The internal thread of the rotating rod 702 away from the moving rod 705 is connected with the threaded rod 801, the threaded rod 801 penetrates the rotating rod 702, the threaded rod 801 is rotatably connected to the pressing plate 9, and the end of the threaded rod 801 away from the pressing plate 9 is fixedly connected with the handle 802; the internal sliding connection of the rotating rod 702 away from the moving rod 705 is connected with the guide rod 803, and the guide rod 803 is fixedly connected to the pressing plate 9. During operation, when it is necessary to adjust the position of the pressing plate 9, the handle 802 is rotated, and the pressing plate 9 can be driven to move under the action of the threaded rod 801, and then the pressing plate 9 can be stably moved with the cooperation of the guide rod 803, which is conducive to the pressing plate 9 being pressed on the three-phase asynchronous motor, so that the three-phase asynchronous motor can be stably fixed.

[0056] A testing method for a three-phase asynchronous motor testing device, using the above-mentioned three-phase asynchronous motor testing device, comprises the following steps:

[0057] S1: placing the three-phase asynchronous motor to be tested on the moving seat 601;

[0058] S2: Using the rotating mechanism 4 to rotate the three-phase asynchronous motor to be tested to the position of the testing table 2;

[0059] S3: The moving mechanism 6 drives the three-phase asynchronous motor to be tested to approach the first coupling 11, and uses the first coupling 11 and the torque and speed sensor 12;

[0060] S4: The three-phase asynchronous motor to be tested is powered on, and the three-phase asynchronous motor is tested with the cooperation of the torque and speed sensor 12 and the magnetic powder brake 14 .

[0061] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A three-phase asynchronous motor test device, comprising a base (1) and a test bench (2), characterized in that: The test bench (2) is located on the left side of the base (1), and the left side of the base (1) is connected to the test bench (2) via a connecting rod (3). A magnetic powder brake (14) and a torque speed sensor (12) are fixedly connected to the upper end of the test bench (2). The magnetic powder brake (14) and the torque speed sensor (12) are sequentially arranged from left to right. The left end of the torque speed sensor (12) is connected to the magnetic powder brake (14) via a second coupling (13), and the right end of the torque speed sensor (12) is connected to the output end of the three-phase asynchronous motor body (10) to be tested via a first coupling (11); A rotating mechanism (4) is arranged inside the base (1), a disc (5) is arranged at the upper end of the base (1), and the base (1) is connected to the disc (5) via the rotating mechanism (4); a moving mechanism (6) is arranged inside the disc (5), and four groups of the moving mechanisms (6) are arranged, and the upper end of each group of the moving mechanisms (6) is provided with two groups of transmission components (7), a three-phase asynchronous motor body (10) and two pressing plates (9), and the two pressing plates (9) are symmetrically distributed on both sides of the upper end of the three-phase asynchronous motor body (10); each group of the transmission components (7) is provided with an adjusting component (8), and the transmission component (7) is connected to the pressing plate (9) via the adjusting component (8); The moving mechanism (6) comprises a moving seat (601), an electric telescopic rod (602), a fixed frame (603), a slider (604) and a push plate (605); the moving seat (601) is slidably connected inside the disc (5); the lower end of the moving seat (601) is fixedly connected to the slider (604); the bottom end of the base (1) is fixedly connected to the fixed frame (603); the right side of the fixed frame (603) is fixedly connected to the electric telescopic rod (602); the extended end of the electric telescopic rod (602) passes through the fixed frame (603) and is slidably connected to the fixed frame (603); the extended end of the electric telescopic rod (602) is fixedly connected to the push plate (605); the push plate (605) cooperates with the slider (604); The transmission assembly (7) comprises a support frame (701), a rotating rod (702), a first sliding hole (703), a sliding rod (704), a moving rod (705) and a transmission rod (706); both sides of the upper end of the moving seat (601) are fixedly connected with the support frame (701); the rotating rod (702) is rotatably connected inside the support frame (701); a first sliding hole (703) is provided on the surface of the rotating rod (702); the sliding rod (704) is slidably connected inside the first sliding hole (703); both sides of the moving seat (601) are slidably connected with the moving rod (705); the moving rod (705) and the sliding rod (704) are fixedly connected; the lower end of the moving rod (705) passes through the moving seat (601); the lower end of the moving rod (705) is rotatably connected with the transmission rod (706); the end of the transmission rod (706) away from the moving rod (705) is rotatably connected to the rotating cylinder (402).

2. A three-phase asynchronous motor testing device according to claim 1, characterized in that: The rotating mechanism (4) comprises a servo motor (401), a rotating cylinder (402), a gear (403) and teeth (404); the servo motor (401) is fixedly connected to the left side of the base (1); the output end of the servo motor (401) is fixedly connected to the gear (403); the base (1) is rotatably connected to the rotating cylinder (402); the upper end of the rotating cylinder (402) is fixedly connected to the disk (5); the circumferential surface of the rotating cylinder (402) is fixedly connected to the teeth (404); the teeth (404) are meshed with the gear (403).

3. A three-phase asynchronous motor testing device according to claim 2, characterized in that: A second sliding hole (15) is provided on the upper end surface of the disc (5), the movable seat (601) is located inside the second sliding hole (15) and is slidably connected to the second sliding hole (15), and the end surface of the movable seat (601) is in a cross shape.

4. A three-phase asynchronous motor testing device according to claim 3, characterized in that: A limiting track (17) is fixedly connected to the bottom end of the base (1); the limiting track (17) is cylindrical in shape; the limiting track (17) is slidably connected to the slider (604); the center of the limiting track (17) is concentric with the center of the rotating cylinder (402).

5. A three-phase asynchronous motor testing device according to claim 4, characterized in that: A notch (18) is provided on the circumferential surface of the limiting track (17), and the notch (18) corresponds to the push plate (605). The push plate (605) is in an arc shape, and the center of the push plate (605) is concentric with the center of the limiting track (17).

6. A three-phase asynchronous motor testing device according to claim 5, characterized in that: A positioning column (16) is fixedly connected to the upper end of the movable seat (601), and the positioning column (16) corresponds to the mounting hole of the three-phase asynchronous motor body (10).

7. A three-phase asynchronous motor testing device according to claim 6, characterized in that: The adjustment assembly (8) comprises a threaded rod (801), a handle (802) and a guide rod (803); the threaded rod (801) is internally threadedly connected to one end of the rotating rod (702) away from the moving rod (705); the threaded rod (801) passes through the rotating rod (702); the threaded rod (801) is rotationally connected to the pressure plate (9); the handle (802) is fixedly connected to one end of the threaded rod (801) away from the pressure plate (9); the guide rod (803) is internally slidably connected to one end of the rotating rod (702) away from the moving rod (705); the guide rod (803) is fixedly connected to the pressure plate (9).

8. A testing method for a three-phase asynchronous motor testing device, characterized in that: The testing device for the three-phase asynchronous motor according to any one of claims 1 to 7 comprises the following steps: S1: placing the three-phase asynchronous motor to be tested on a moving seat (601); S2: using the rotating mechanism (4) to rotate the three-phase asynchronous motor to be tested to the position of the testing table (2); S3: The moving mechanism (6) works to drive the three-phase asynchronous motor to be tested to approach the first coupling (11), and utilizes the first coupling (11) and the torque and speed sensor (12); S4: Power is supplied to the three-phase asynchronous motor to be tested, and the three-phase asynchronous motor is tested in cooperation with the torque and speed sensor (12) and the magnetic powder brake (14).

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