CN110850290A - Stator armature polarity detection device - Google Patents
Stator armature polarity detection device Download PDFInfo
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- CN110850290A CN110850290A CN201911259137.8A CN201911259137A CN110850290A CN 110850290 A CN110850290 A CN 110850290A CN 201911259137 A CN201911259137 A CN 201911259137A CN 110850290 A CN110850290 A CN 110850290A
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- magnetic pole
- shell
- stator
- elastic component
- fixed
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
- G01R31/346—Testing of armature or field windings
Abstract
The invention belongs to the field of permanent magnet motors, and relates to a stator armature polarity detection device. The method solves the problems of high cost, low efficiency, complex operation and the like of the existing stator armature polarity detection method. Comprises a shell and a detection component; the detection part comprises a positioning seat, an elastic component, a magnetic pole seat and a magnetic pole; the positioning seats are uniformly distributed along the same circumference and are fixed in the shell; the included angle between the adjacent positioning seats is 60 degrees; the elastic component is fixed on the positioning seat, and the telescopic direction of the elastic component is the same as the radial direction of the shell; the magnetic pole seat is fixed at the free end of the elastic component; the magnetic pole is fixed on the magnetic pole seat; the two magnetic poles with the included angle of 180 degrees have opposite magnetism; the magnetism of two adjacent magnetic poles is also opposite; the part of the shell corresponding to the magnetic pole is provided with an opening through which the magnetic pole can pass, and the end part of the magnetic pole extends out of the opening. The invention can realize one-time detection of the polarity sequence of the motor stator by utilizing the characteristics of the stator polarity without assembling a motor assembly, and has simple detection process and visual result.
Description
Technical Field
The invention belongs to the field of permanent magnet motors, and particularly relates to a stator armature polarity detection device.
Background
The permanent magnet motor mainly structurally comprises a stator, a rotor, a brake, a position sensor and the like, the production process is complex, particularly when the motor stator is produced, the stator needs to be subjected to line inserting and line binding, workers easily mistake A, B, C phase sequences in the line inserting and line binding processes, the correctness of the phase sequence of a stator winding not only determines the rotation direction of the motor, but also directly influences the torque output capability of the motor, and if the A, B, C phase sequence is wrong, the motor can not normally run, a driving module is burnt and other serious consequences can be caused. Therefore, the phase sequence of the permanent magnet motor needs to be checked. Because the motor air gap is small, the rotor has magnetic force, in the motor production process, the rotor is not easy to be installed in the stator, even if the rotor is installed in the stator reluctantly, the rotor can not be rotated because the rotor is fixed by no bearing on the end cover of the motor shell, and therefore the phase sequence detection of the motor stator can not be carried out before the motor assembly is assembled.
Therefore, the existing method for detecting the phase sequence of the stator can only adopt a prime motor to drive a product motor after the motor assembly is assembled, and detect the ABC phase sequence of the stator through an oscilloscope. If after the oscilloscope detects, the stator phase sequence is found to be wrong, and the motor assembly is assembled and cannot be reworked and adjusted, so that the stator and even the motor are scrapped, the rejection rate of the motor is increased, the production cost is increased, and the detection efficiency is low.
Therefore, when the stator assembly is machined, the phase sequence of the stator winding is measured, and the judgment of the correctness of the phase sequence of the stator winding is realized.
Patent CN102331531A discloses a device of monitoring motor phase sequence, adopts and awaits measuring stator assorted rotor, arranges the rotor inside the stator, and manual shaking rotor gathers response back electromotive force wave form through the oscilloscope, and then confirms stator phase sequence, but its rotor is great, and the operation is complicated, does not have the commonality.
Disclosure of Invention
The invention aims to provide a stator armature polarity detection device to solve the problems of high cost, low efficiency, complex operation and the like of the conventional stator armature polarity detection method.
The technical scheme of the invention is to provide a stator armature polarity detection device, which is characterized in that: comprises a shell and a detection component positioned in the shell;
the detection part comprises a plurality of positioning seats, a plurality of elastic components, a plurality of magnetic pole seats and a plurality of magnetic poles; the number of the positioning seats, the elastic assemblies, the magnetic pole seats and the magnetic poles is equal to that of the magnetic poles of the stator to be measured;
the plurality of positioning seats are uniformly distributed along the same circumference and are fixed in the shell; the included angle between the adjacent positioning seats is 60 degrees;
the elastic assembly is fixed on the positioning seat, and the telescopic direction of the elastic assembly is the same as the radial direction of the shell;
the magnetic pole seat is fixed at the free end of the elastic component;
the magnetic poles are fixed on the magnetic pole seats; the two magnetic poles with the included angle of 180 degrees have opposite magnetism; the magnetism of two adjacent magnetic poles is also opposite;
the part of the shell corresponding to the magnetic pole is provided with an opening through which the magnetic pole can pass, and the end part of the magnetic pole extends out of the opening;
the diameter of the shell is smaller than the diameter of the inner side of the stator to be measured.
Further, the shell is an annular shell and comprises a base and a cover plate; the base is in a ring groove shape, and the cover plate is in a ring shape;
the positioning seats are uniformly distributed along the circumferential direction of the inner side wall of the annular groove of the base, and the side wall close to the center of the shell is defined as the inner side wall.
Furthermore, the positioning seat is a U-shaped groove, and the opening end of the U-shaped groove points to the outer side wall of the annular groove of the base;
the elastic assembly is fixed at the bottom of the U-shaped groove, and the axial length of the elastic assembly in a free state is larger than the depth of the U-shaped groove.
Further, the elastic component is a spring.
Further, the magnetic poles are bonded to the magnetic pole base.
The invention has the beneficial effects that:
1. the invention designs a device capable of detecting the polarity sequence of the motor stator by utilizing the characteristics of the stator polarity, can realize one-time detection of the polarity sequence of the motor stator without assembling a motor assembly, and has simple detection process and visual result.
2. The device structure can be widely applied to detecting the magnetic pole characteristics of the motor stator, overcomes the defects of complex process and easy error of the traditional detection method, is suitable for the detection work of large-batch and multi-slot stators, has obvious effect and has wide application prospect.
Drawings
FIG. 1 is a schematic view of an appearance structure of a stator armature polarity detecting device according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an internal structure of a stator armature polarity detecting apparatus according to an embodiment of the present invention;
FIG. 3 is a first schematic diagram illustrating a stator armature polarity detecting device cooperating with a stator to detect a polarity sequence of the stator according to an embodiment of the present invention;
FIG. 4 is a second schematic diagram of the stator armature polarity detection device in cooperation with the stator for detecting the polarity sequence of the stator according to the embodiment of the present invention;
the reference numbers in the figures are: the method comprises the following steps of 1-a shell, 11-a base, 2-a detection part, 3-a positioning seat, 4-an elastic component, 5-a magnetic pole seat, 6-a magnetic pole and 7-a motor stator.
Detailed Description
The invention is further described with reference to the following figures and specific embodiments.
The motor stator polarity detection device is simple in structure, convenient to operate when used for detecting the polarity of the stator, capable of evaluating the polarity sequence of the stator at one time aiming at a multi-slot stator, efficient and accurate.
The packaged shape of the motor stator polarity detection device of the present embodiment is as shown in fig. 1, and includes a casing 1 and a detection component 2 located inside the casing 1, where as can be seen from fig. 1, the casing 1 of the present embodiment is an annular closed casing, and a part of the detection component 2 is exposed along an outer circumference of the casing.
As shown in fig. 2, the detecting member 2 of the present embodiment includes a positioning seat 3, an elastic component 4, a magnetic pole seat 5 and a magnetic pole 6; because the number of the magnetic poles of the stator to be detected is six, the number of the positioning seat 3, the elastic component 4, the magnetic pole seat 5 and the magnetic poles 6 is six. The number of the positioning seat 3, the elastic component 4, the magnetic pole seat 5 and the magnetic pole 6 can be set according to the number of the magnetic poles of the stator to be detected.
In this embodiment, the housing may be disassembled into a base 11 and a cover plate (not shown in the figure), the base 11 may be in the shape of an annular groove, and the cover plate is in the shape of an annular ring, which are detachably mounted. It can be seen from the figure that six positioning seats 3 are uniformly distributed along the circumferential direction of the side wall of the base groove, and the positioning seats 3 are in a U-shaped groove, and the opening end faces to the other side wall of the base groove. The elastic component 4 is fixed at the bottom of the U-shaped groove, and in this embodiment, a spring is used as the elastic component 4, and the central axis of the spring is in the same direction as the radial direction of the shell. The pole socket 5 is fixed at the free end of the spring, and the pole 6 is adhered to the pole socket 5. Openings are provided along the outer circumference of the housing 1 to allow the individual poles 6 to pass through.
In assembly, the detecting member 2 is first fixed to the base 11 and then sealed with a cover.
The principle of the invention is as follows:
the invention utilizes the principle that like poles repel each other, and the detection device is inserted into the stator 7 to be detected, each magnetic pole of the invention is opposite to each magnetic pole of the stator 7 to be detected, and the polarities of the two opposite magnetic poles are the same. When the two-phase winding of the motor stator is electrified, the two-phase tooth part of the motor stator generates magnetism, the magnetic poles at the corresponding positions of the detection device are stressed, the direction of the force is directed to the center of the detection device along the radial direction of the detection device, so that the elastic component contracts towards the center of the detection device to drive the corresponding magnetic poles to retract into the shell, the bottom of the magnetic pole seat 5 is contacted with the end part of the positioning seat 3 and tightly pushed, the detection of the polarity of the stator is realized, and the state of each magnetic pole can be directly observed.
During detection, the detection device is inserted into the corresponding position on the inner side of the stator, the stator armature A, C is electrified, as shown in fig. 3, the tooth part corresponding to the motor phase generates a magnetic field, the magnetic field with the tooth part is S, the magnetic field with the tooth part is N, the magnetic pole at the corresponding position of the detection device is stressed, the spring is compressed, and the magnetic pole retracts into the detection device shell, so that the A, C two-phase winding sequence is correct.
Two phases of the stator armature A, B are electrified, and if the corresponding magnetic poles retract into the shell of the detection device, the arrangement sequence of the two phases A, B is correct. Similarly, when two phases of the stator armature B, C are energized, if the corresponding magnetic poles are retracted into the casing of the detection device, it indicates that the winding sequence of the two phases B, C is correct.
If the winding sequence of the stator is wrong, namely the winding sequence of the stator is inconsistent with the magnetic pole sequence of the detection device, the magnetic pole corresponding to the detection device cannot be retracted into the device. As shown in fig. 4, the magnetic pole of the phase C corresponding to the magnetic pole of the detection device cannot be retracted into the device, indicating that the winding sequence of the phase C winding is wrong.
Claims (5)
1. A stator armature polarity detection device is characterized in that: comprises a shell (1) and a detection component (2) positioned in the shell (1);
the detection part comprises a plurality of positioning seats (3), a plurality of elastic components (4), a plurality of magnetic pole seats (5) and a plurality of magnetic poles (6); the number of the positioning seats (3), the elastic assemblies (4), the magnetic pole seats (5) and the magnetic poles (6) is equal to that of the stator magnetic poles to be measured;
the positioning seats (3) are uniformly distributed along the same circumference and are fixed in the shell (1); the included angle between the adjacent positioning seats (3) is 60 degrees;
the elastic component (4) is fixed on the positioning seat (3), and the telescopic direction of the elastic component (4) is the same as the radial direction of the shell (1);
the magnetic pole seat (5) is fixed at the free end of the elastic component (4);
the magnetic pole (6) is fixed on the magnetic pole seat (5); the two magnetic poles (6) with an included angle of 180 degrees have opposite magnetism; the magnetism of two adjacent magnetic poles (6) is opposite;
an opening through which the magnetic pole (6) can pass is formed in the part, corresponding to the magnetic pole (6), of the shell (1), and the end part of the magnetic pole extends out of the opening;
the diameter of the shell is smaller than the diameter of the inner side of the stator to be measured.
2. The stator armature polarity detection device according to claim 1, characterized in that: the shell (1) is an annular shell and comprises a base (11) and a cover plate; the base (11) is in a shape of an annular groove, and the cover plate is in a circular ring shape;
a plurality of positioning seats (3) are uniformly distributed along the circumferential direction of the inner side wall of the annular groove of the base (11), and the side wall close to the center of the shell is defined as the inner side wall.
3. The stator armature polarity detection device according to claim 2, characterized in that: the positioning seat (3) is a U-shaped groove, and the opening end of the U-shaped groove points to the outer side wall of the annular groove of the base (11);
the elastic component (4) is fixed at the bottom of the U-shaped groove, and the axial length of the elastic component (4) in a free state is larger than the depth of the U-shaped groove.
4. A stator armature polarity detecting device according to claim 3, characterized in that: the elastic component (4) is a spring.
5. The stator armature polarity detection device according to claim 4, characterized in that: the magnetic pole (6) is adhered to the magnetic pole seat (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911259137.8A CN110850290A (en) | 2019-12-10 | 2019-12-10 | Stator armature polarity detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911259137.8A CN110850290A (en) | 2019-12-10 | 2019-12-10 | Stator armature polarity detection device |
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| Publication Number | Publication Date |
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| CN110850290A true CN110850290A (en) | 2020-02-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911259137.8A Pending CN110850290A (en) | 2019-12-10 | 2019-12-10 | Stator armature polarity detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114019435A (en) * | 2021-11-24 | 2022-02-08 | 贵州航天林泉电机有限公司 | Motor magnet steel polarity detection device |
-
2019
- 2019-12-10 CN CN201911259137.8A patent/CN110850290A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114019435A (en) * | 2021-11-24 | 2022-02-08 | 贵州航天林泉电机有限公司 | Motor magnet steel polarity detection device |
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