CN212646911U - Steering pre-judging device of three-phase asynchronous motor - Google Patents
Steering pre-judging device of three-phase asynchronous motor Download PDFInfo
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- CN212646911U CN212646911U CN202020498072.4U CN202020498072U CN212646911U CN 212646911 U CN212646911 U CN 212646911U CN 202020498072 U CN202020498072 U CN 202020498072U CN 212646911 U CN212646911 U CN 212646911U
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- 238000012360 testing method Methods 0.000 claims abstract description 17
- 238000000819 phase cycle Methods 0.000 abstract description 4
- 238000004804 winding Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 3
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Abstract
The utility model discloses a three-phase asynchronous motor turns to prejudgement device, including prejudgement device body, prejudgement device body includes test fastener, control module, power module, the module of charging, display module, shell, the test fastener passes through connecting wire and control module electric connection, control module fixed mounting is in the shell, fixed mounting has display module on the shell, control module respectively with display module and the module electric connection that charges. The utility model discloses can be convenient, swift, accurate, safe judgement three-phase asynchronous motor in advance turn to, under the condition of not switching on formal power, judge through faint signal that to be tried the motor and should according to which kind of phase sequence wiring, avoid switching on formal power back motor and not rotate according to the rotation requirement and the work of the phase reversal preface of going on, to a great extent has protected the safety of the load that does not allow the reversal, has saved the time of phase reversal preface simultaneously, has improved work efficiency.
Description
Technical Field
The utility model relates to an agricultural equipment technical field specifically is a three-phase asynchronous motor turns to prejudgement device.
Background
The three-phase asynchronous motor has wide industrial application, and in practical application, the phenomenon of motor reversal is often encountered, namely, the requirement of actual steering cannot be met after a power supply is switched on, then the phase sequence needs to be reversed in a power failure mode, even some loads cannot be reversed, and once the motor is reversed, property economic loss is caused. The three-phase asynchronous motor steering pre-judging device can judge which phase sequence the tested motor should be connected according to through weak signals under the condition that a formal power supply is not connected, avoids the phase inversion sequence work which is carried out when the motor does not rotate according to the rotation requirement after the formal power supply is connected, protects the safety of a load which is not allowed to be inverted to a great extent, saves the time of the phase inversion sequence and improves the working efficiency. Therefore, we improve this, and propose a steering anticipation device for three-phase asynchronous motor.
SUMMERY OF THE UTILITY MODEL
For solving the defect that prior art exists, the utility model provides a three-phase asynchronous motor turns to prejudgement device.
In order to solve the technical problem, the utility model provides a following technical scheme:
the utility model relates to a three-phase asynchronous motor turns to prejudgement device, including prejudgement device body, prejudgement device body includes test fastener, control module, power module, the module of charging, display module, shell, the test fastener passes through connecting wire and control module electric connection, control module fixed mounting is in the shell, fixed mounting has display module on the shell, control module respectively with display module and the module electric connection that charges, fixed mounting has the module of charging in the shell, the module of charging and power module electric connection.
As a preferred technical scheme of the utility model, control module includes the tester, fixed mounting has starting switch on the tester, the tester passes through wire and tester jack electric connection, the tester jack is installed on the shell side, the tester jack passes through connecting wire and test wire clamp electric connection.
As an optimal technical scheme of the utility model, display module includes corotation diode and reversal diode, corotation diode and reversal diode respectively with tester electric connection, corotation diode and reversal diode fixed mounting are on the shell surface.
As a preferred technical scheme of the utility model, the module of charging includes rechargeable battery, rechargeable battery and tester electric connection, rechargeable battery fixed mounting is in the shell, rechargeable battery pass through the wire respectively with charge jack and switch electric connection, charge jack and switch fixed mounting respectively on the shell side, switch and power indicator lamp electric connection, power indicator lamp and rechargeable battery electric connection, power indicator lamp fixed mounting is on the shell surface.
As a preferred technical scheme of the utility model, power module includes power plug, power plug passes through wire and power converter electric connection, power converter is through the wire and the jack electric connection that charges that charge.
The utility model has the advantages that: the device for prejudging the steering of the three-phase asynchronous motor can prejudge the steering of the three-phase asynchronous motor conveniently, quickly, accurately and safely, judges which phase sequence the tested motor should be connected according to through weak signals under the condition that a formal power supply is not switched on, avoids working in a phase inversion sequence which is carried out when the motor does not rotate according to the rotation requirement after the formal power supply is switched on, protects the safety of a load which is not allowed to be inverted to a great extent, saves the time of the phase inversion sequence and improves the working efficiency.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic diagram of the star connection testing principle of the steering pre-judging device of the three-phase asynchronous motor of the present invention;
fig. 2 is a schematic diagram of a triangular connection testing principle of the steering pre-judging device of the three-phase asynchronous motor of the present invention;
fig. 3 is a schematic structural diagram of the steering pre-judging device of the three-phase asynchronous motor of the present invention.
In the figure: 1. testing the wire clamp; 2. connecting a lead; 3. a tester jack; 4. a power indicator light; 5. a start button; 6. a charging jack; 7. a power switch; 8. a forward rotation diode; 9. an inverting diode; 10. a charging wire; 11. a power converter; 12. a power plug; 13. a housing.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.
Example (b): as shown in fig. 1, fig. 2, fig. 3, the utility model relates to a three-phase asynchronous motor turns to prejudgement device, including prejudgement device body, prejudgement device body includes test fastener 1, control module, power module, the module of charging, display module, shell 13, test fastener 1 is through connecting wire 2 and control module electric connection, control module fixed mounting is in shell 13, fixed mounting has display module on the shell 13, control module respectively with display module and the module electric connection that charges, fixed mounting has the module of charging in the shell 13, the module of charging and power module electric connection.
Wherein, control module includes the tester, fixed mounting has starting switch 5 on the tester, and the tester passes through wire and 3 electric connection of tester jack, and the tester jack 3 is installed on 13 side ends of shell, and tester jack 3 passes through connecting wire 2 and test fastener 1 electric connection.
The display module comprises a forward diode 8 and a reverse diode 9, the forward diode 8 and the reverse diode 9 are respectively electrically connected with the tester, and the forward diode 8 and the reverse diode 9 are fixedly installed on the surface of the shell 13.
Wherein, the module of charging is including the storage battery that charges, storage battery and tester electric connection charge, storage battery fixed mounting charges in shell 13, storage battery that charges pass through the wire respectively with charge jack 6 and switch 7 electric connection, charge jack 6 and switch 7 respectively fixed mounting on shell 13 side end, switch 7 and power indicator 4 electric connection, power indicator 4 and storage battery electric connection charge, power indicator 4 fixed mounting is on the shell 13 surface.
The power module comprises a power plug 12, the power plug 12 is electrically connected with a power converter 11 through a wire, and the power converter 11 is electrically connected with the charging jack 6 through a charging wire 10.
The working principle is as follows:
the motor turns to there are two directions, clockwise and anticlockwise promptly, if let in a signal source for stator winding in the twinkling of an eye, when the rotor clockwise rotation, according to right-hand rule, magnetic line of force can be cut in the magnetic field that stator winding produced, can induce certain induced current at rotor winding simultaneously, thereby establish a new magnetic field, this moment because stator winding is the coil structure, when rotor clockwise rotation, new magnetic field intensity will strengthen, the magnetic flux in the stator winding will reduce, meanwhile, stator winding can induce one and hinder the induced electromotive force that the magnetic flux reduces, through the direction that measures this electromotive force, in order to judge turning to of motor.
The test wire clamp 1 is connected to the tester jack 3 through the connecting wire 2, and the tester jack 3 is installed on the shell 13. The power supply module is connected to a power converter 11 by a power plug 12, and a charging wire 10 is connected to a power system of the device through a charging jack 6. A rechargeable storage battery is arranged in the device, a charging jack 6 is connected to the storage battery, the storage battery is connected to a power switch 7 of the device, and a power indicator lamp 4 is turned on after the power switch 7 is switched on. The forward diode 8 and the reverse diode 9 form a display circuit, and the signal source of the display circuit is motor induced voltage. The jog switch 5 is a start button.
Test example: the test wire clamps are respectively connected with windings U1, V1 and W1, a power switch is turned on, a starting button is clicked, the motor is slightly rotated, and prejudgment work can be carried out.
By combining the above, the device improves the working efficiency, avoids repeated wire rewinding work and reduces the workload; the safe operation capacity of the equipment is improved; meanwhile, the whole device is small and exquisite and is very convenient to carry.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The utility model provides a three-phase asynchronous motor turns to prejudgement device which characterized in that: including judging the device body in advance, judge the device body in advance and include test fastener (1), control module, power module, the module of charging, display module, shell (13), test fastener (1) is through connecting wire (2) and control module electric connection, control module fixed mounting is in shell (13), fixed mounting has display module on shell (13), control module respectively with display module and the module electric connection that charges, fixed mounting has the module of charging in shell (13), the module of charging and power module electric connection.
2. The steering pre-judging device for the three-phase asynchronous motor according to claim 1, wherein the control module comprises a tester, a starting switch (5) is fixedly mounted on the tester, the tester is electrically connected with a tester jack (3) through a wire, the tester jack (3) is mounted on the side end of the shell (13), and the tester jack (3) is electrically connected with the test wire clamp (1) through a connecting wire (2).
3. The steering anticipation device of the three-phase asynchronous motor according to claim 2, wherein the display module comprises a forward diode (8) and a reverse diode (9), the forward diode (8) and the reverse diode (9) are respectively electrically connected to the tester, and the forward diode (8) and the reverse diode (9) are fixedly installed on the surface of the casing (13).
4. The steering anticipation device for the three-phase asynchronous motor according to claim 3, wherein the charging module comprises a rechargeable battery, the rechargeable battery is electrically connected to the tester, the rechargeable battery is fixedly installed in the housing (13), the rechargeable battery is electrically connected to the charging jack (6) and the power switch (7) through wires, the charging jack (6) and the power switch (7) are fixedly installed on the side end of the housing (13), the power switch (7) is electrically connected to the power indicator (4), the power indicator (4) is electrically connected to the rechargeable battery, and the power indicator (4) is fixedly installed on the surface of the housing (13).
5. The steering anticipation device for a three-phase asynchronous motor according to claim 1, wherein the power module comprises a power plug (12), the power plug (12) is electrically connected to the power converter (11) through a conducting wire, and the power converter (11) is electrically connected to the charging jack (6) through a charging conducting wire (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020498072.4U CN212646911U (en) | 2020-04-08 | 2020-04-08 | Steering pre-judging device of three-phase asynchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020498072.4U CN212646911U (en) | 2020-04-08 | 2020-04-08 | Steering pre-judging device of three-phase asynchronous motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212646911U true CN212646911U (en) | 2021-03-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020498072.4U Active CN212646911U (en) | 2020-04-08 | 2020-04-08 | Steering pre-judging device of three-phase asynchronous motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212646911U (en) |
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2020
- 2020-04-08 CN CN202020498072.4U patent/CN212646911U/en active Active
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