CN219574324U - Tool for testing back electromotive force of motor - Google Patents
Tool for testing back electromotive force of motor Download PDFInfo
- Publication number
- CN219574324U CN219574324U CN202320755707.8U CN202320755707U CN219574324U CN 219574324 U CN219574324 U CN 219574324U CN 202320755707 U CN202320755707 U CN 202320755707U CN 219574324 U CN219574324 U CN 219574324U
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- motor
- outer rotor
- testing
- tool
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
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Abstract
The utility model belongs to the technical field of motor detection, and discloses a tool for testing back electromotive force of a motor, which comprises the following components: the test rack comprises a base, a test rack and a universal meter main body; the universal meter main body and the test frame are arranged on the base; the testing frame is provided with a sliding component capable of moving up and down, the sliding component is provided with a motor, the motor is provided with a rotating speed sensor, the output end of the motor is provided with a coupler, and the bottom end of the coupler is provided with an outer rotor; the sliding component is fixed at the fixed position of the test frame through the locking component; a test pedestal for placing a stator is arranged below the outer rotor; the universal meter main body is connected with the stator through an electric wire. Firstly, the sliding component is utilized to drive the outer rotor to move and match with the stator for positioning, then the motor is started to simulate the rotating speed of the outer rotor motor in normal operation, and the counter electromotive force value of the motor is displayed by the universal meter; meanwhile, the rotating speed sensor is arranged, so that the rotating speed of the motor and the counter electromotive force value can be displayed at the same time, and the observation data is more visual.
Description
Technical Field
The utility model belongs to the technical field of motor detection, and particularly relates to a tool for testing back electromotive force of a motor.
Background
Before the outer rotor motor leaves the factory, the magnetizing saturation of the outer rotor motor needs to be detected, and when the outer rotor with qualified magnetizing saturation works normally, the value of the generated counter electromotive force is constant, so that the magnetizing saturation of the outer rotor motor can be judged if the value of the counter electromotive force generated by the outer rotor motor in the normal working state is qualified. The existing motor counter electromotive force cannot obtain the rotating speed of the motor to be detected when detecting, and the universal meter cannot be connected with the integral structure when being externally connected with the universal meter, so that the problem of inconvenient operation of the universal meter when in use occurs.
Disclosure of Invention
The purpose of the utility model is that: in order to solve the problems that the existing motor rotation speed cannot be detected and the universal meter is inconvenient to install, a tool for testing the counter electromotive force of the motor is provided.
The technical scheme of the utility model is as follows: a tool for testing back emf of a motor, comprising: base, test stand and universal meter main part.
The universal meter main body and the test frame are arranged on the base.
The testing frame is provided with a sliding component capable of moving up and down, the sliding component is provided with a motor, the motor is provided with a rotating speed sensor, the output end of the motor is provided with a coupler, and the bottom end of the coupler is provided with an outer rotor; the sliding component is fixed at the fixed position of the test frame through the locking component; a test pedestal for placing the stator is arranged below the outer rotor.
The universal meter main body is connected with the stator through an electric wire.
During testing, the locking assembly is unlocked, the sliding assembly moves downwards, the outer rotor is reversely buckled on the stator, the motor is started, detected data are displayed through the main body of the universal meter, and meanwhile, the rotating speed of the motor can be displayed in real time due to the fact that the rotating speed sensor is arranged. The numerical value on the main body of the universal meter is the counter electromotive force numerical value of the motor at the working rotating speed. If the detected counter electromotive force is equal to the preset value, the outer rotor is qualified in magnetizing, and the outer rotor is qualified as a qualified product, otherwise, the magnetizing quantity is improper, and the outer rotor is unqualified. After the detection is completed, resetting the sliding assembly, replacing the outer rotor by a worker, and repeating the detection process.
On the basis of the scheme, further, a fine tuning knob is arranged on one side of the sliding assembly, and a baffle plate matched with the fine tuning knob is arranged below the fine tuning knob and on one side of the test frame. When the sliding component moves downwards and the outer rotor is reversely buckled on the stator, the relative position relation between the outer rotor and the stator can be adjusted through the fine adjustment knob.
On the basis of the scheme, further, a limiting assembly for buffering descending of the sliding assembly is arranged on the test frame. The spacing subassembly includes: the upper surface of the cross brace is provided with a buffer; when the sliding component descends, the buffer is in contact with the sliding component.
On the basis of the scheme, further, the front side of the universal meter main body is provided with a starting switch, the front side of the universal meter main body is provided with a display screen, and the side face of the universal meter main body is provided with a cooling fan. The display screen can display data measured by the rotating speed sensor and data measured by the universal meter main body.
On the basis of the scheme, further, the base is provided with a sliding groove, and the universal meter main body is arranged in the sliding groove through the sliding block, so that the universal meter main body is tightly connected with the base.
The beneficial effects are that: firstly, the sliding component is utilized to drive the outer rotor to move and match with the stator for positioning, then the motor is started to simulate the rotating speed of the outer rotor motor in normal operation, and the counter electromotive force value of the motor is displayed by the universal meter; the utility model is provided with the rotating speed sensor, and can display the rotating speed of the motor and the counter electromotive force value at the same time when detecting the counter electromotive force, so that the observation data is more visual.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is a schematic view of a limiting assembly according to the present utility model;
FIG. 3 is a schematic view of the mounting structure of the multimeter body of the present utility model;
wherein: 1. a base; 2. a chute; 3. a sliding assembly; 4. a locking assembly; 5. a limit component; 51. a cross brace; 52. a buffer; 6. a multimeter body; 7. an outer rotor; 8. a baffle; 9. a fine tuning knob; 10. a motor; 11. a slide block; 12. a display screen; 13. a rotation speed sensor; 14. a fixed bracket; 15. the switch is activated.
Detailed Description
Embodiment 1, referring to fig. 1, a tool for testing back emf of a motor, comprising: base 1, test rack and universal meter main body 6.
The multimeter main body 6 and the test rack are arranged on the base 1.
The test frame is provided with a sliding component 3 capable of moving up and down, the sliding component 3 is provided with a motor 10, the motor 10 is provided with a rotation speed sensor 13, the output end of the motor 10 is provided with a coupler, and the bottom end of the coupler is provided with an outer rotor 7; the sliding component 3 is fixed at the position of the test frame through the locking component 4; a test stand 14 for placing the stator is provided below the outer rotor 7.
The multimeter body 6 is connected to the stator by wires.
During testing, the locking assembly 4 is unlocked, the sliding assembly 3 is moved downwards, the outer rotor 7 is reversely buckled on the stator, the motor 10 is started, detected data are displayed through the universal meter main body 6, and meanwhile, the rotating speed of the motor 10 can be displayed in real time due to the fact that the rotating speed sensor 13 is arranged. The value on the multimeter body 6 is the back emf value of the motor at this operating speed. If the detected counter electromotive force is equal to the preset value, the outer rotor 7 is qualified in magnetizing, otherwise, the magnetizing quantity is improper, and the outer rotor 7 is unqualified. After the detection is completed, the sliding assembly 3 is reset, the outer rotor 7 is replaced by a worker, and the detection process is repeated.
Embodiment 2 the specific structure of the tool for testing the back emf of the motor is further defined on the basis of embodiment 1:
one side of the sliding component 3 is provided with a fine tuning knob 9, and a baffle plate 8 matched with the fine tuning knob 9 is arranged below the fine tuning knob 9 and on one side of the test frame. When the sliding assembly 3 moves downwards and the outer rotor 7 is reversely buckled on the stator, the relative position relationship between the outer rotor 7 and the stator can be adjusted through the fine adjustment knob 9.
Referring to fig. 2, a limit assembly 5 for buffering the descent of the sliding assembly 3 is provided on the test stand. The spacing assembly 5 includes: a cross brace 51, the upper surface of the cross brace 51 being provided with a buffer 52; when the sliding assembly 3 descends, the buffer 52 collides with the sliding assembly 3.
The front side of universal meter main body 6 is equipped with start switch 15, and the front of universal meter main body 6 is equipped with display screen 12, and the side is equipped with radiator fan. The display 12 is capable of displaying data measured by the rotation speed sensor 13 and data measured by the multimeter main body 6. Referring to fig. 3, base 1 is provided with a chute 2, and multimeter body 6 is mounted in chute 2 by a slider 11 such that multimeter body 6 is in close connection with base 1.
During operation, a worker fixes a motor stator of the same type as the outer rotor 7 to be detected after magnetizing on the fixed support 14, then installs the outer rotor 7 at the lower section of a transmission shaft of the motor 10, pulls the locking component 4 to unlock after preparation is completed, then moves the sliding component 3 downwards until the buffer 52 is in contact with the sliding component 3, and adjusts the relative position relation between the outer rotor 7 and the stator through the fine adjustment knob 9 to enable the outer rotor 7 to be sleeved on the periphery of the motor stator.
The staff presses the start switch 15, and motor 10 starts, and under the rotation of the inside shaft coupling of motor 10 and then drive the external rotor 7 that treats after magnetizing and rotate, simulate external rotor motor's rotational speed at normal during operation, multimeter main part 6 detects this moment to with the result transmission that detects inside display screen 12, show back electromotive force numerical value and the rotational speed of motor 10 this moment on the display screen 12.
Finally, it should be noted that: it is apparent that the above examples are only illustrative of the present utility model and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present utility model.
Claims (6)
1. A tool for testing back emf of a motor, comprising: a base (1), a test rack and a universal meter main body (6);
the universal meter main body (6) and the test rack are arranged on the base (1);
the testing frame is provided with a sliding component (3) capable of moving up and down, the sliding component (3) is provided with a motor (10), the motor (10) is provided with a rotation speed sensor (13), the output end of the motor (10) is provided with a coupler, and the bottom end of the coupler is provided with an outer rotor (7); the sliding component (3) is fixed at the position of the test frame through the locking component (4); a test pedestal (14) for placing a stator is arranged below the outer rotor (7);
the multimeter main body (6) is connected with the stator through an electric wire.
2. A tool for testing the back emf of a motor according to claim 1, characterized in that a side of the sliding assembly (3) is provided with a fine tuning knob (9), and a baffle (8) cooperating with the fine tuning knob (9) is provided below the fine tuning knob (9) on the side of the test frame.
3. A tool for testing the back emf of a motor according to claim 1, characterized in that a stop assembly (5) is provided on the test rack for buffering the descent of the slide assembly (3).
4. A tool for testing the back emf of a motor according to claim 3, wherein said limiting assembly (5) comprises: a cross brace (51), wherein a buffer (52) is arranged on the upper surface of the cross brace (51); when the sliding assembly (3) descends, the buffer (52) is in contact with the sliding assembly (3).
5. A tool for testing back emf of a motor according to claim 1, characterized in that the front side of the multimeter body (6) is provided with a start switch (15), the front side of the multimeter body (6) is provided with a display screen (12), and the side is provided with a cooling fan.
6. A tool for testing back emf of a motor according to claim 1, wherein the base (1) is provided with a chute (2), and the multimeter body (6) is mounted in the chute (2) by means of a slider (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320755707.8U CN219574324U (en) | 2023-04-07 | 2023-04-07 | Tool for testing back electromotive force of motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320755707.8U CN219574324U (en) | 2023-04-07 | 2023-04-07 | Tool for testing back electromotive force of motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219574324U true CN219574324U (en) | 2023-08-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320755707.8U Active CN219574324U (en) | 2023-04-07 | 2023-04-07 | Tool for testing back electromotive force of motor |
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| Country | Link |
|---|---|
| CN (1) | CN219574324U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117788460A (en) * | 2024-02-23 | 2024-03-29 | 中山格智美电器有限公司 | Motor rotor iron shell notch burr quality assessment method based on machine vision |
-
2023
- 2023-04-07 CN CN202320755707.8U patent/CN219574324U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117788460A (en) * | 2024-02-23 | 2024-03-29 | 中山格智美电器有限公司 | Motor rotor iron shell notch burr quality assessment method based on machine vision |
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