Motor stalling test device and motor test system
By combining a servo motor and a reduction mechanism, the motor stall test device achieves efficient, flexible, and accurate testing, solving the problems of inaccurate test results and low efficiency in existing technologies, and supporting precise control and data acquisition of the motor rotor at any angle.
Patent Information
- Application Number
- CN202520316053.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-26
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-02-26
AI Technical Summary
The existing motor stall test device has low accuracy and low testing efficiency, mainly because the pin locking mechanism cannot lock the motor rotor at any angle, resulting in poor flexibility in the test position.
It employs a servo motor and a reduction mechanism. The output shaft of the servo motor is connected to the reduction mechanism, and the output shaft of the motor under test is also connected. The reduction mechanism amplifies the torque, and the static torque sensor and host computer enable precise control of the motor rotor. It supports arbitrary angle locking and testing.
It improves the flexibility and efficiency of test position in motor stall testing, ensures accurate and reliable test data, saves manpower and time, and enables the rapid stopping of the motor rotor at any angle and the accurate plotting of continuous torque pulsation curves.
Smart Images
Figure CN223926577U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of motor testing devices, and in particular to a motor stall test device and motor testing system. Background Technology
[0002] The stall test is an important test item in the process of evaluating motor performance. According to national standards, its general principle is to lock the motor rotor mechanically and then measure the motor current and torque under different voltages.
[0003] Existing motor stall testing devices typically employ a pin-locking mechanism to lock the motor rotor. Due to the limitation on the number of pin holes, the pin-locking mechanism cannot lock the motor rotor at any angle, resulting in poor flexibility in the test position. Consequently, the test results from the motor stall testing device are of low accuracy and low testing efficiency. Utility Model Content
[0004] The purpose of this invention is to provide a motor stall test device to solve the technical problems of low accuracy and low efficiency of test results in existing motor stall test devices.
[0005] The motor stall testing device provided by this utility model includes a servo motor and a reduction mechanism;
[0006] The output shaft of the servo motor is connected to the input end of the reduction mechanism; the output end of the reduction mechanism is used to connect to the output shaft of the motor under test.
[0007] Furthermore, the deceleration mechanism includes a reducer, a pinion, and a large gear;
[0008] The output shaft of the servo motor is connected to the input shaft of the reducer. The pinion is fixedly sleeved on the output shaft of the reducer and meshes with the large gear. The large gear is used to connect to the output shaft of the motor under test.
[0009] Furthermore, the motor stall test device also includes a static torque sensor; the static torque sensor is fixed to the inner wall of the large gear.
[0010] Furthermore, the motor stall test device also includes a host computer; the static torque sensor and the servo motor are respectively connected to the host computer.
[0011] Furthermore, a coupling is provided on the output shaft of the motor under test, and the coupling is fixed to the static torque sensor.
[0012] Furthermore, the maximum torque achievable on the coupling is A, and the maximum torque of the tested motor is B, where A > 2B.
[0013] Furthermore, the output shaft of the motor under test is connected to the coupling via a spline.
[0014] Furthermore, the large gear is provided with a scale, which is distributed along the circumference of the large gear.
[0015] Furthermore, the motor stall test device also includes a reducer mounting base, a base plate, and a frame;
[0016] The speed reducer is fixed on the speed reducer mounting base, the speed reducer mounting base is fixedly connected to the base plate, the large gear is rotatably connected to the base plate through a bearing, the base plate is fixedly connected to the frame, and the motor under test is used to fix it on the frame.
[0017] The purpose of this utility model is also to provide a motor testing system, including the motor stall test device provided by this utility model.
[0018] This utility model provides a motor stall testing device, comprising a servo motor and a reduction mechanism. The output shaft of the servo motor is connected to the input end of the reduction mechanism; the output end of the reduction mechanism is used to connect to the output shaft of the motor under test. The output torque of the servo motor is transmitted to the reduction mechanism. After being reduced by the reduction mechanism, the torque is increased. The reduction mechanism amplifies the output torque of the servo motor and transmits it to the output shaft of the motor under test, thereby meeting the torque requirements for stall testing of the motor under test. By controlling the servo motor, the rotor of the motor under test can be quickly rotated to any angle and stopped. The testing position is highly flexible, the testing efficiency is high, the test data is accurate and reliable, and manpower and R&D testing time are saved. Attached Figure Description
[0019] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0020] Figure 1 This is a front view of the motor stall test device provided in this embodiment of the utility model;
[0021] Figure 2 yes Figure 1 A sectional view along line AA.
[0022] Icons: 1-Large gear; 2-Static torque sensor; 3-Reducer; 4-Reducer mounting base; 5-Small gear; 6-Adapter flange; 7-Servo motor; 8-Bearing; 9-First bearing pressure plate; 10-Motor mounting flange under test; 11-Second bearing pressure plate; 12-Motor under test; 13-Base plate; 14-Frame; 15-Coupling. Detailed Implementation
[0023] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0024] This utility model provides a motor stall test device and a motor test system. Several embodiments are given below to describe in detail the motor stall test device and motor test system provided by this utility model.
[0025] Example 1
[0026] The motor stall test device provided in this embodiment, such as Figures 1 to 2 As shown, it includes a servo motor 7 and a reduction mechanism; the output shaft of the servo motor 7 is connected to the input end of the reduction mechanism; the output end of the reduction mechanism is used to connect to the output shaft of the motor 12 under test.
[0027] The output torque of servo motor 7 is transmitted to the reduction mechanism. After being reduced in speed by the reduction mechanism, the torque is increased. The reduction mechanism then amplifies the output torque of servo motor 7 and transmits it to the output shaft of the motor under test 12, thereby meeting the torque requirements for stall testing of the motor under test 12. By controlling servo motor 7, the rotor of the motor under test 12 can be quickly rotated to any angle and stopped. The test position is highly flexible, the test efficiency is high, the test data is accurate and reliable, and manpower and R&D testing time are saved.
[0028] Furthermore, through servo control, torque pulsation experiments of the tested motor 12 can be performed, enabling rapid and accurate plotting of the continuous torque pulsation curve of the tested motor 12, which is more accurate than the existing technology that only takes a few points.
[0029] Furthermore, the reduction mechanism includes a reducer 3, a pinion 5, and a gear 1; the output shaft of the servo motor 7 is connected to the input shaft of the reducer 3, the pinion 5 is fixedly sleeved on the output shaft of the reducer 3, and the pinion 5 meshes with the gear 1; the gear 1 is used to connect to the output shaft of the motor 12 under test.
[0030] The servo motor 7 can be connected to the input shaft of the reducer 3 via a flat key.
[0031] The output torque of the servo motor 7 is transmitted to the pinion 5 through the high-ratio reducer 3. The pinion 5 meshes with the large gear 1. The large gear 1 amplifies the torque and transmits it to the output shaft of the motor under test 12, and then to the coupling 15.
[0032] The large gear 1 can be coaxially set with the output shaft of the motor under test 12, and the large gear 1 can be fixed with the output shaft of the motor under test 12, so that the large gear 1 amplifies the torque and transmits it to the output shaft of the motor under test 12.
[0033] The diameter of the large gear 1 is greater than the diameter of the small gear 5, and the number of gears in the large gear 1 is greater than the number of gears in the small gear 5.
[0034] Furthermore, the motor stall test device also includes a static torque sensor 2; the static torque sensor 2 is fixed to the inner wall of the large gear 1.
[0035] The static torque sensor 2 is coaxially arranged with the large gear 1, and the static torque sensor 2 is fixed to the inner wall of the large gear 1, so that the static torque sensor 2 is located at the rotation center of the large gear 1.
[0036] The static torque sensor 2 is coaxially arranged with the output shaft of the motor under test 12, and the static torque sensor 2 is fixed with the output shaft of the motor under test 12.
[0037] Furthermore, the motor stall test device also includes a host computer; the static torque sensor 2 and the servo motor 7 are respectively connected to the host computer.
[0038] The static torque sensor 2 can transmit the torque signal to the host computer, which can remotely program and operate the servo motor 7, enabling the motor stall test device to be remotely controlled, which is highly convenient.
[0039] Furthermore, a coupling 15 is provided on the output shaft of the motor 12 under test, and the coupling 15 is fixed to the static torque sensor 2.
[0040] The output shaft of the motor under test 12, the coupling 15, and the static torque sensor 2 are coaxially arranged. The motor under test 12 is fixedly mounted on the motor under test mounting flange 10, and the coupling 15 is fixedly sleeved on the output shaft of the motor under test 12. The coupling 15 is fixed to the static torque sensor 2, thereby amplifying the output torque of the servo motor 7 and transmitting it to the output shaft of the motor under test 12.
[0041] Furthermore, the maximum torque achievable on coupling 15 is A, and the maximum torque of the tested motor 12 is B, where A > 2B.
[0042] A can be adjusted according to actual needs. A>2B can provide a safety margin for the motor stall test device, improving safety and stability.
[0043] In this implementation, A is 3000 Nm.
[0044] Furthermore, the output shaft of the motor 12 under test is connected to the coupling 15 via a spline.
[0045] The coupling 15 is connected to the output shaft of the motor 12 under test via a spline, which can increase the torque capacity and facilitate installation.
[0046] Furthermore, the large gear 1 is provided with a scale, which is distributed along the circumference of the large gear 1.
[0047] The initial position and rotation angle information of the motor 12 under test can be checked and confirmed by the scale.
[0048] Furthermore, the motor stall test device also includes a reducer mounting base 4, a base plate 13, and a frame 14; the reducer 3 is fixed on the reducer mounting base 4, the reducer mounting base 4 is fixedly connected to the base plate 13, the large gear 1 is rotatably connected to the base plate 13 through the bearing 8, the base plate 13 is fixedly connected to the frame 14, and the motor under test 12 is used to fix it on the frame 14.
[0049] Specifically, the adapter flange 6 is located between the reducer 3 and the servo motor 7. The adapter flange 6 is fixedly connected to the housing of the servo motor 7 and the housing of the reducer 3.
[0050] The housing of the reducer 3 is fixedly connected to the reducer mounting base 4, and the reducer mounting base 4 is fixedly connected to the base plate 13.
[0051] The large gear 1 is rotatably connected to the base plate 13, and the bearing 8 is located between the large gear 1 and the base plate 13. The inner ring of the bearing 8 is mounted on the large gear 1 and pressed against the inner ring of the bearing 8 by the first bearing pressure plate 9, so that the bearing 8 is fixed to the large gear 1 along the axial direction of the bearing 8. The outer ring of the bearing 8 is mounted on the base plate 13 and pressed against the outer ring of the bearing 8 by the second bearing pressure plate 11, so that the bearing 8 is fixed to the base plate 13 along the axial direction of the bearing 8.
[0052] The base plate 13 is fixedly connected to the frame 14. The motor under test mounting flange 10 is located between the base plate 13 and the frame 14, and is fixedly connected to the frame 14. The motor under test 12 is fixedly mounted on the motor under test mounting flange 10. A coupling 15 is mounted on the output shaft of the motor under test 12. The coupling 15 is fixed to the static torque sensor 2. The static torque sensor 2 is fixed at the rotation center position on the large gear 1.
[0053] Example 2
[0054] The motor testing system provided in this embodiment includes the motor stall testing device provided in Embodiment 1. The output torque of the servo motor 7 is transmitted to the reduction mechanism. After being reduced in speed by the reduction mechanism, the torque output by the servo motor 7 is increased. The reduction mechanism then amplifies the output torque of the servo motor 7 and transmits it to the output shaft of the motor under test 12, thereby meeting the torque requirements for stall testing of the motor under test 12. By controlling the servo motor 7, the rotor of the motor under test 12 can be quickly rotated to any angle and stopped. The test position is highly flexible, the test efficiency is high, the test data is accurate and reliable, and manpower and R&D testing time are saved.
[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. A motor stall testing device, characterized by, The servo motor and a reduction mechanism are included. An output shaft of the servo motor is connected with an input end of the reduction mechanism, and an output end of the reduction mechanism is used to be connected with an output shaft of the measured motor. The reduction mechanism includes a reduction machine, a pinion and a gear. An output shaft of the servo motor is connected with an input shaft of the reduction machine, the pinion is fixedly sleeved on an output shaft of the reduction machine, and the pinion is engaged with the gear, and the gear is used to be connected with the output shaft of the measured motor. The motor block test device further includes a static torque sensor, and the static torque sensor is fixed with a hole wall of an inner hole of the gear. The motor block test device further includes an upper computer, and the static torque sensor and the servo motor are respectively connected with the upper computer.
2. The motor stall testing device of claim 1, wherein, A coupling is arranged on the output shaft of the measured motor, and the coupling is fixed with the static torque sensor.
3. The motor stall testing device of claim 2, wherein, A maximum torque that can be reached on the coupling is A, a maximum torque of the measured motor is B, and A>2B.
4. The motor stall testing device of claim 2, wherein, The output shaft of the measured motor is connected with the coupling through a spline.
5. The motor stall testing device of claim 1, wherein, A scale is arranged on the gear, and the scale is distributed along a circumferential direction of the gear.
6. The motor stall testing device of claim 1, wherein, The motor block test device further includes a reduction machine mounting seat, a base plate and a rack. The reduction machine is fixed on the reduction machine mounting seat, the reduction machine mounting seat is fixedly connected with the base plate, the gear is rotatably connected with the base plate through a bearing, the base plate is fixedly connected with the rack, and the measured motor is used to be fixed on the rack.
7. An electrical machine testing system characterized by, The motor block test device includes any one of claims 1-6.