Electrical variable measuring device and use method
By designing an electrical variable measurement device including a rack, variable test load, fixed table, movable table and adjustment mechanism, the problem that the motor electric variable measurement device in the prior art cannot adapt to motors of different specifications is solved, fast, stable installation and high-precision measurement are achieved, and detection flexibility and accuracy are improved.
Patent Information
- Application Number
- CN202411659139.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-20
- Publication Date
- 2025-03-14
AI Technical Summary
The existing motor electric variable measurement devices cannot adjust the height or spacing according to motors of different specifications, resulting in cumbersome operation steps and affecting the accuracy of measurement. When frequently detecting motors of different models, a lot of preparation is required, resulting in slow detection progress and poor use flexibility.
An electrical variable measurement device including a rack, a variable test load, a fixed table, a movable table and a regulating mechanism is designed. The lifting mechanism enables free height adjustment of the movable table, and the dovetail chute enables rapid position adjustment of the fixed table and the movable table. The adjustment mechanism is used to adjust the state of the variable test load and simulates different load conditions.
It realizes rapid and stable installation and position adjustment of motors of different specifications, improves measurement accuracy and flexibility, simplifies the detection process, saves time and improves the accuracy of detection.
Smart Images
Figure CN119619830A_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the technical field of electric variable measurement, and in particular relates to an electric variable measurement device and a use method thereof. Background Art
[0002] A motor is a device that drives the starter rotor to rotate by a forceful rotation of an energized coil in a magnetic field, and the small gear on the rotor drives the engine flywheel to rotate. In the industrial field, especially in the automobile manufacturing industry, motors are widely used. During the production of starter motors, strict electrical variable detection is required, and most of the existing motor electrical variable measuring devices are load-fixed. First, the height or spacing cannot be adjusted according to the detection work of motors of different specifications. When connecting the test motor, the operation steps are cumbersome, which is not convenient for the motor connection work, affects the measurement accuracy, and even makes it impossible to perform electrical variable detection on motors of various specifications. Second, when it is necessary to adjust or replace the load for motors of different specifications, a lot of preparation work is required when frequently detecting motors of different models, resulting in slow detection progress and poor flexibility. Therefore, it is very necessary to provide an electrical variable measuring device and a method of use that has a simple structure, convenient and quick adjustment, improved measurement accuracy, and good flexibility. Summary of the invention
[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide an electrical variable measuring device and a method of use which have a simple structure, are convenient and quick to adjust, have improved measuring accuracy and good flexibility.
[0004] The objective of the present invention is achieved in this way: an electrical variable measuring device comprises a frame and a variable test load, wherein a fixed platform is arranged on the left side above the frame, and a movable platform separated from the fixed platform is arranged on the right side, and the movable platform can freely adjust its height through a lifting mechanism arranged at the bottom thereof; a motor to be detected is installed above the fixed platform, and the motor to be detected is electrically connected to the detection mechanism arranged on the left side of the frame; a load support frame is arranged above the movable platform, and a variable test load is installed on the load support frame, and the variable test load completes load state change adjustment through adjustment mechanisms arranged on its upper and lower sides.
[0005] The fixed platform includes a movable base plate, the motor to be detected is detachably mounted on the movable base plate, a sensor base is arranged on the other side of the movable base plate relative to the motor to be detected, a torque and speed sensor electrically connected to the detection mechanism is installed on the sensor base, the torque and speed sensor is connected to the shaft of the motor to be detected through a first coupling, and a second coupling is installed on the right side of the torque and speed sensor.
[0006] The fixed platform and the movable platform are both provided with a plurality of dovetail grooves, and the movable base plate is slidably connected to the fixed platform via the corresponding dovetail grooves; the load support frame is an "L"-shaped structure as a whole and is slidably connected to the movable platform via the corresponding dovetail grooves.
[0007] The lifting mechanism includes a lifting mounting plate installed on the frame, and the four corners of the lifting mounting plate are connected to the bottom surface of the movable platform through guide shafts and bushings. A worm gear box is installed in the middle of the upper part of the lifting mounting plate, and a handwheel connecting shaft is connected to the left side of the worm gear box. The free end of the handwheel connecting shaft passes through a bearing seat arranged on the lifting mounting plate, and an adjusting handwheel is installed at the free end of the handwheel connecting shaft. The worm gear box is connected to the bottom surface of the movable platform through a worm that passes through the worm gear box.
[0008] The detection mechanism comprises a connecting plate connected to the frame, a support rod is arranged above the connecting plate, two jacket plates are fixedly mounted on the outside of the support rod from top to bottom, and a placement plate and a detector are respectively mounted on the jacket plates.
[0009] The variable test load includes a base plate connected to a load support frame, the base plate is grooved at the top and bottom, a rotating bearing base is arranged in the middle of the base plate, a load device is installed in front of the rotating bearing base, an electrically controlled magnetic ring sleeve is installed in front of the load device, and the load device is connected to a second coupling through a transmission shaft; fan-shaped shells are arranged on the upper and lower sides of the load device, and electrically controlled magnetic plates are installed inside the fan-shaped shells.
[0010] The adjustment mechanism includes a flat plate, a U-shaped slotted seat is arranged on the upper front of the flat plate, a driving plate with a hole is arranged in front of the U-shaped slotted seat, one end of the driving plate with a hole close to the geometric center of the U-shaped slotted seat is connected to the driving motor arranged behind the flat plate, and the other end of the driving plate with a hole is provided with a hole corresponding to the U-shaped slot of the U-shaped slotted seat, and a connecting rod is arranged inside the hole.
[0011] One end of the connecting rod passes through the hole and is located inside the U-shaped slot of the U-shaped slotted seat, and the other end is connected to a moving plate with an overall inverted "Ω"-shaped structure. Track plates are provided on the left and right sides of the moving plate, and a push plate for pushing the fan-shaped shell is connected to the lower end of the track plate. The track plates are respectively slidably connected to the corresponding longitudinal guide rails, and transverse plates are provided on the upper and lower sides behind the longitudinal guide rails, and the transverse plates are respectively slidably connected to the transverse guide rails provided on the flat plate.
[0012] A method for using an electric variable measuring device, using the electric variable measuring device as described above to complete the detection of a motor to be detected, comprises the following steps: Step 1: Install the motor to be tested on the moving base plate, connect the motor to be tested to the torque speed sensor through the first coupling, adjust the moving base plate to a suitable position through the dovetail slide on the fixed platform, fix the motor to be tested, and then use wires to connect the detection mechanism with the motor to be tested and the torque speed sensor; Step 2: Adjust the movable table to a suitable height through the lifting mechanism so that the transmission shaft of the variable test load and the second coupling are on the same horizontal line, and then adjust the load support frame to a suitable position through the dovetail slot on the movable table, and connect the transmission shaft of the variable test load to the second coupling; Step 3: During the detection process of the motor to be detected, a set of adjustment mechanisms are used to adjust the state of the variable test load to simulate the working state of different motors to be detected in response to different transmission ratios. When the motor to be detected is working, the detection mechanism detects the electrical variables of the motor to be detected in real time, and can also detect the data information of the torque and speed sensor in real time; Step 4: After the motor to be tested is working stably, a set of adjustment mechanisms are used to reciprocate the variable test load, and the detection mechanism is used to detect the electrical variables under different transmission ratios; Step 5: After the test is completed, remove the motor to be tested.
[0013] Beneficial effects of the present invention: The present invention is an electrical variable measuring device and a method of using the same. During use, the present invention, by means of an adjustment mechanism and a variable test load, changes the state of the variable test load, thereby making the output load of the motor to be tested adjustable, and then can measure the electrical variable data information flowing through the motor to be tested under different load conditions, thereby simulating the data information of the motor to be tested under different load conditions; the present invention, by means of a fixed table, a movable table and a dovetail slide, can achieve rapid and stable installation and position adjustment of the motor to be tested, thereby improving the measurement accuracy; at the same time, under the action of the first coupling, the second coupling and the torque and speed sensor, the connection steps of the motor to be tested in the detection process are simplified, which greatly saves time, thereby facilitating the measurement and improving the measurement accuracy; the present invention adopts a split structure of a fixed table and a movable table, and places the variable test load on a load support frame, and can adjust the placement height of the variable test load through a lifting mechanism, thereby improving the flexibility of the device; the present invention has the advantages of simple structure, convenient and quick adjustment, improved measurement accuracy and good flexibility. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a front view of the present invention.
[0015] Figure 2 For the present invention Figure 1 Schematic diagram of part of the structure.
[0016] Figure 3For the present invention Figure 2 Side view of.
[0017] Figure 4 It is a structural schematic diagram of the detection mechanism of the present invention.
[0018] Figure 5 It is a schematic diagram of the structure of the variable test load of the present invention.
[0019] Figure 6 It is a schematic structural diagram of the regulating mechanism of the present invention.
[0020] Figure 7 For the present invention Figure 6 Front view of .
[0021] In the figure: 1, frame 2, fixed platform 21, movable base plate 22, sensor base 23, torque speed sensor 24, first coupling 25, second coupling 3, movable platform 4, lifting mechanism 41, lifting mounting plate 42, guide shaft and sleeve 43, worm gear box 44, hand wheel connecting shaft 45, bearing seat 46, adjusting hand wheel 47, worm 5, detection mechanism 51, connecting plate 52, support rod 53, jacket plate 54, placement plate 55, detector 6, waiting Detection motor 7, load support frame 8, variable test load 81, base plate 82, rotating bearing base 83, load device 84, electrically controlled magnetic ring sleeve 85, transmission shaft 86, fan-shaped shell 87, electrically controlled magnetic plate 9, adjustment mechanism 91, flat plate 92, U-shaped slotted seat 93, perforated drive plate 94, drive motor 95, connecting rod 96, moving plate 97, track plate 98, push plate 99, longitudinal guide rail 901, cross plate 902, cross guide rail 10, dovetail slide. DETAILED DESCRIPTION
[0022] The present invention will be further described below in conjunction with the accompanying drawings. Example 1
[0023] like Figure 1-7 As shown, an electric variable measuring device includes a frame 1 and a variable test load 8, wherein a fixed platform 2 is arranged on the left side above the frame 1, and a movable platform 3 separated from the fixed platform 2 is arranged on the right side, and the movable platform 3 can realize free height adjustment through a lifting mechanism 4 arranged at the bottom thereof; a motor to be detected 6 is installed above the fixed platform 2, and the motor to be detected 6 is electrically connected to a detection mechanism 5 arranged on the left side of the frame 1; a load support frame 7 is arranged above the movable platform 3, and a variable test load 8 is installed on the load support frame 7, and the variable test load 8 completes load state change adjustment through adjustment mechanisms 9 arranged on the upper and lower sides thereof.
[0024] The fixed platform 2 includes a movable base plate 21, and the motor 6 to be detected is detachably mounted on the movable base plate 21. A sensor base 22 is provided on the other side of the movable base plate 21 relative to the motor 6 to be detected. A torque and speed sensor 23 electrically connected to the detection mechanism 5 is installed on the sensor base 22. The torque and speed sensor 23 is connected to the shaft of the motor 6 to be detected through a first coupling 24. A second coupling 25 is installed on the right side of the torque and speed sensor 23.
[0025] A plurality of dovetail grooves 10 are provided inside the fixed platform 2 and the movable platform 3, and the movable base plate 21 is slidably connected to the fixed platform 2 via the corresponding dovetail grooves 10; the load support frame 7 is an "L"-shaped structure as a whole and the load support frame 7 is slidably connected to the movable platform 3 via the corresponding dovetail grooves 10.
[0026] The lifting mechanism 4 includes a lifting mounting plate 41 installed on the frame 1, and the four corners of the lifting mounting plate 41 are connected to the bottom surface of the movable platform 3 through guide shafts and sleeves 42. A worm gear box 43 is installed in the middle of the upper part of the lifting mounting plate 41, and a handwheel connecting shaft 44 is connected to the left side of the worm gear box 43 by power. The free end of the handwheel connecting shaft 44 passes through a bearing seat 45 set on the lifting mounting plate 41, and an adjusting handwheel 46 is installed at the free end of the handwheel connecting shaft 44. The worm gear box 43 is connected to the bottom surface of the movable platform 3 through a worm 47 passing through the worm gear box 43.
[0027] In this embodiment, the working principle of the lifting mechanism is: rotate the adjusting handwheel, and the adjusting handwheel drives the worm wheel in the worm gear box to rotate through the handwheel connecting shaft. Since the worm wheel in the worm gear box is connected to the worm, the worm can be driven by the worm in the worm gear box to move up and down, thereby realizing the lifting and lowering adjustment of the movable platform. The guide shaft and the bushing ensure that the lifting and lowering adjustment movement of the movable platform is smooth and reliable; the lifting mechanism can be used to adjust the placement height of the variable test load, thereby improving the flexibility and applicability of the device.
[0028] The detection mechanism 5 includes a connecting plate 51 connected to the frame 1, a support rod 52 is arranged above the connecting plate 51, and two jacket plates 53 are sequentially sleeved and fixedly installed on the outside of the support rod 52 from top to bottom, and a placement plate 54 and a detector 55 are respectively installed on the jacket plates 53.
[0029] The variable test load 8 includes a base plate 81 connected to the load support frame 7, the base plate 81 is grooved at the top and bottom, and a rotating bearing base 82 is arranged in the middle of the base plate 81, a load device 83 is installed in front of the rotating bearing base 82, an electrically controlled magnetic ring sleeve 84 is installed in front of the load device 83, and the load device 83 is connected to the second coupling 25 through a transmission shaft 85; fan-shaped shells 86 are arranged on the upper and lower sides of the load device 83, and electrically controlled magnetic plates 87 are installed inside the fan-shaped shells 86.
[0030] The adjustment mechanism 9 includes a flat plate 91, a U-shaped slotted seat 92 is arranged on the upper front of the flat plate 91, a driving plate 93 with holes is arranged in front of the U-shaped slotted seat 92, one end of the driving plate 93 with holes close to the geometric center of the U-shaped slotted seat 92 is connected to the driving motor 94 arranged behind the flat plate 91, and the other end of the driving plate 93 with holes is provided with a hole corresponding to the U-shaped slot of the U-shaped slotted seat 92, and a connecting rod 95 is arranged inside the hole.
[0031] One end of the connecting rod 95 passes through the hole and is located inside the U-shaped slot of the U-shaped slotted seat 92, and the other end is connected to a movable plate 96 which is an inverted "Ω"-shaped structure as a whole. Track plates 97 are provided on the left and right sides of the movable plate 96. The lower end of the track plate 97 is connected to a push plate 98 for pushing the fan-shaped shell 86. The track plates 97 are respectively slidably connected to the corresponding longitudinal guide rails 99. The rear of the longitudinal guide rails 99 are provided with transverse plates 901 on the upper and lower sides. The transverse plates 901 are respectively slidably connected to the transverse guide rails 902 provided on the flat plate 91.
[0032] In this embodiment, the working principle of the adjustment mechanism and the variable test load is as follows: start the driving motor, and the driving motor drives the driving plate with holes to rotate. Since the other end of the driving plate with holes is provided with a hole slot corresponding to the U-shaped slot hole of the U-shaped slot seat, and a connecting rod is provided inside the hole slot, and one end of the connecting rod passes through the hole slot and is located inside the U-shaped slot hole of the U-shaped slot seat, and the other end is connected to the moving plate, when the driving motor drives the driving plate to rotate, the driving plate with holes drives the connecting rod to move along the U-shaped slot hole of the U-shaped slot seat, and the connecting rod drives the moving plate to move, and the moving plate drives the fan-shaped shell of the variable test load to move through the track plate and the push plate, thereby changing a set of fan-shaped shells. The distance between the contact surface of the load device can be adjusted by changing the on / off state or magnetic pole change of the electrically controlled magnetic ring sleeve and / or the electrically controlled magnetic plate, thereby flexibly changing the magnitude of the force acting on the variable load to achieve dynamic adjustment, and can also be adjusted when the motor to be tested drives the load device to move, providing more flexible load change control; the adjustment device can also be used to achieve a reciprocating change adjustment of the distance between a set of fan-shaped shells and the contact surface of the load device, and in conjunction with the state change of the electrically controlled magnetic ring sleeve and / or the electrically controlled magnetic plate, the detection device can be used to draw the dynamic curve graph data of the electrical variables of the motor to be tested, so as to facilitate more intuitive measurement of the electrical variables of the motor to be tested. The present invention is an electric variable measuring device and a method for using the same. In use, the present invention, by providing an adjustment mechanism 9 and a variable test load 8, changes the state of the variable test load 8, thereby making the output load of the motor 6 to be detected adjustable, and then can measure the electric variable data information flowing through the motor 6 to be detected under different load conditions, thereby simulating the data information of the motor 6 to be tested under different load conditions; the present invention, by providing a fixed platform 2, a movable platform 3 and a dovetail slide 10, can realize fast and stable installation and position adjustment of the motor 6 to be detected, improve the measurement accuracy, and at the same time, under the action of the first coupling 24, the second coupling 25 and the torque and speed sensor 23, simplify the connection steps of the motor 6 to be detected during the detection process, greatly save time, and then facilitate the measurement and improve the accuracy of the measurement; the present invention adopts a split structure of a fixed platform 2 and a movable platform 3, and places the variable test load 8 on a load support frame 7, and can adjust the placement height of the variable test load 8 through a lifting mechanism 4, thereby improving the flexibility of the device; the present invention has the advantages of simple structure, convenient and quick adjustment, improved measurement accuracy and good flexibility. Example 2
[0033] like Figure 1-7 As shown, a method for using an electric variable measuring device, using the electric variable measuring device as described above to complete the detection of a motor to be detected, includes the following steps: Step 1: Install the motor to be tested on the moving base plate, connect the motor to be tested to the torque speed sensor through the first coupling, adjust the moving base plate to a suitable position through the dovetail slide on the fixed platform, fix the motor to be tested, and then use wires to connect the detection mechanism with the motor to be tested and the torque speed sensor; Step 2: Adjust the movable table to a suitable height through the lifting mechanism so that the transmission shaft of the variable test load and the second coupling are on the same horizontal line, and then adjust the load support frame to a suitable position through the dovetail slot on the movable table, and connect the transmission shaft of the variable test load to the second coupling; Step 3: During the detection process of the motor to be detected, a set of adjustment mechanisms are used to adjust the state of the variable test load to simulate the working state of different motors to be detected in response to different transmission ratios. When the motor to be detected is working, the detection mechanism detects the electrical variables of the motor to be detected in real time, and can also detect the data information of the torque and speed sensor in real time; Step 4: After the motor to be tested is working stably, a set of adjustment mechanisms are used to reciprocate the variable test load, and the detection mechanism is used to detect the electrical variables under different transmission ratios; Step 5: After the test is completed, remove the motor to be tested.
[0034] The present invention is an electric variable measuring device and a method for using the same. In use, the present invention, by providing an adjustment mechanism 9 and a variable test load 8, changes the state of the variable test load 8, thereby making the output load of the motor 6 to be detected adjustable, and then can measure the electric variable data information flowing through the motor 6 to be detected under different load conditions, thereby simulating the data information of the motor 6 to be tested under different load conditions; the present invention, by providing a fixed platform 2, a movable platform 3 and a dovetail slide 10, can realize fast and stable installation and position adjustment of the motor 6 to be detected, improve the measurement accuracy, and at the same time, under the action of the first coupling 24, the second coupling 25 and the torque and speed sensor 23, simplify the connection steps of the motor 6 to be detected during the detection process, greatly save time, and then facilitate the measurement and improve the accuracy of the measurement; the present invention adopts a split structure of a fixed platform 2 and a movable platform 3, and places the variable test load 8 on a load support frame 7, and can adjust the placement height of the variable test load 8 through a lifting mechanism 4, thereby improving the flexibility of the device; the present invention has the advantages of simple structure, convenient and quick adjustment, improved measurement accuracy and good flexibility.
Claims
1. An electrical variable measuring device, comprising a frame and a variable test load, characterized in that: A fixed platform is arranged on the left side above the frame, and a movable platform separated from the fixed platform is arranged on the right side, and the movable platform can realize free height adjustment through a lifting mechanism arranged at the bottom thereof; a motor to be detected is installed above the fixed platform, and the motor to be detected is electrically connected to the detection mechanism arranged on the left side of the frame; a load support frame is arranged above the movable platform, and a variable test load is installed on the load support frame, and the variable test load completes load state change adjustment through adjustment mechanisms arranged on the upper and lower sides thereof.
2. An electrical variable measuring device as claimed in claim 1, characterized in that: The fixed platform includes a movable base plate, the motor to be detected is detachably mounted on the movable base plate, a sensor base is arranged on the other side of the movable base plate relative to the motor to be detected, a torque and speed sensor electrically connected to the detection mechanism is installed on the sensor base, the torque and speed sensor is connected to the shaft of the motor to be detected through a first coupling, and a second coupling is installed on the right side of the torque and speed sensor.
3. An electrical variable measuring device as claimed in claim 2, characterized in that: The fixed platform and the movable platform are both provided with a plurality of dovetail grooves, and the movable base plate is slidably connected to the fixed platform via the corresponding dovetail grooves; the load support frame is an "L"-shaped structure as a whole and is slidably connected to the movable platform via the corresponding dovetail grooves.
4. An electrical variable measuring device as claimed in claim 3, characterized in that: The lifting mechanism includes a lifting mounting plate installed on the frame, and the four corners of the lifting mounting plate are connected to the bottom surface of the movable platform through guide shafts and bushings. A worm gear box is installed in the middle of the upper part of the lifting mounting plate, and a handwheel connecting shaft is connected to the left side of the worm gear box. The free end of the handwheel connecting shaft passes through a bearing seat arranged on the lifting mounting plate, and an adjusting handwheel is installed at the free end of the handwheel connecting shaft. The worm gear box is connected to the bottom surface of the movable platform through a worm that passes through the worm gear box.
5. An electrical variable measuring device as claimed in claim 4, characterized in that: The detection mechanism comprises a connecting plate connected to the frame, a support rod is arranged above the connecting plate, two jacket plates are fixedly mounted on the outside of the support rod from top to bottom, and a placement plate and a detector are respectively mounted on the jacket plates.
6. An electrical variable measuring device as claimed in claim 5, characterized in that: The variable test load includes a base plate connected to a load support frame, the base plate is grooved at the top and bottom, a rotating bearing base is arranged in the middle of the base plate, a load device is installed in front of the rotating bearing base, an electrically controlled magnetic ring sleeve is installed in front of the load device, and the load device is connected to a second coupling through a transmission shaft; fan-shaped shells are arranged on the upper and lower sides of the load device, and electrically controlled magnetic plates are installed inside the fan-shaped shells.
7. An electrical variable measuring device as claimed in claim 6, characterized in that: The adjustment mechanism includes a flat plate, a U-shaped slotted seat is arranged on the upper front of the flat plate, a driving plate with a hole is arranged in front of the U-shaped slotted seat, one end of the driving plate with a hole close to the geometric center of the U-shaped slotted seat is connected to the driving motor arranged behind the flat plate, and the other end of the driving plate with a hole is provided with a hole corresponding to the U-shaped slot of the U-shaped slotted seat, and a connecting rod is arranged inside the hole.
8. An electrical variable measuring device as claimed in claim 7, characterized in that: One end of the connecting rod passes through the hole and is located inside the U-shaped slot of the U-shaped slotted seat, and the other end is connected to a moving plate with an overall inverted "Ω"-shaped structure. Track plates are provided on the left and right sides of the moving plate, and a push plate for pushing the fan-shaped shell is connected to the lower end of the track plate. The track plates are respectively slidably connected to the corresponding longitudinal guide rails, and transverse plates are provided on the upper and lower sides behind the longitudinal guide rails, and the transverse plates are respectively slidably connected to the transverse guide rails provided on the flat plate.
9. A method for using an electric variable measuring device, using the electric variable measuring device as claimed in any one of claims 1 to 8 to complete the detection of a motor to be detected, characterized in that: The following steps are involved: Step 1: Install the motor to be tested on the moving base plate, connect the motor to be tested to the torque speed sensor through the first coupling, adjust the moving base plate to a suitable position through the dovetail slide on the fixed platform, fix the motor to be tested, and then use wires to connect the detection mechanism with the motor to be tested and the torque speed sensor; Step 2: Adjust the movable table to a suitable height through the lifting mechanism so that the transmission shaft of the variable test load and the second coupling are on the same horizontal line, and then adjust the load support frame to a suitable position through the dovetail slot on the movable table, and connect the transmission shaft of the variable test load to the second coupling; Step 3: During the detection process of the motor to be detected, a set of adjustment mechanisms are used to adjust the state of the variable test load to simulate the working state of different motors to be detected in response to different transmission ratios. When the motor to be detected is working, the detection mechanism detects the electrical variables of the motor to be detected in real time, and can also detect the data information of the torque and speed sensor in real time; Step 4: After the motor to be tested is working stably, a set of adjustment mechanisms are used to reciprocate the variable test load, and the detection mechanism is used to detect the electrical variables under different transmission ratios; Step 5: After the test is completed, remove the motor to be tested.