CN212849835U - DC motor protector - Google Patents
DC motor protector Download PDFInfo
- Publication number
- CN212849835U CN212849835U CN202021834306.4U CN202021834306U CN212849835U CN 212849835 U CN212849835 U CN 212849835U CN 202021834306 U CN202021834306 U CN 202021834306U CN 212849835 U CN212849835 U CN 212849835U
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- China
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- motor
- connecting wire
- motor body
- switch
- control module
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Abstract
A protector of a direct current motor comprises a motor body, wherein a change-over switch and a relay for adjusting the rotating speed of the motor are arranged on the motor body, a voltage stabilizer is arranged on the motor body, a fast-gear connecting wire and a slow-gear connecting wire are arranged between the motor body and the voltage stabilizer, a switching signal of the change-over switch is fed back to the voltage stabilizer through the fast-gear connecting wire and the slow-gear connecting wire, a control module is connected to the voltage stabilizer, a main switch is further arranged on the motor and electrically connected with the motor body, a current sensor is arranged on the main switch, and the current sensor is electrically connected with the control module; the utility model has the advantages of simple structure, reasonable design, can effectively reduce produced electromotive force of change over switch, protection motor control circuit.
Description
Technical Field
The utility model relates to a direct current motor, in particular to direct current motor protector.
Background
A dc motor is a motor that converts dc electrical energy into mechanical energy. The speed-regulating device is widely applied to electric traction due to good speed-regulating performance. In order to make the application of the direct current motor more extensive, manufacturers of the direct current motor can set a relay and a change-over switch on the direct current motor to control the rotating speed of the motor, but the direct current motor can generate instantaneous voltage and reverse electromotive force when the change-over switch is switched, and the instantaneous voltage and the reverse electromotive force generated when the switch is switched are too large, so that the relay or the motor is scrapped.
Disclosure of Invention
An object of the utility model is to solve the not enough of prior art, the utility model provides a simple structure, reasonable in design, can effectively reduce switching change over switch produced electromotive force, protection motor control circuit's direct current motor protector.
The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a direct current motor protector, includes motor body, last change over switch and the relay that is used for adjusting motor speed of being equipped with of motor body, the last stabiliser that is equipped with of motor body, be equipped with fast shelves connecting wire, slow shelves connecting wire between relay and the stabiliser, change over switch's switching signal is through fast shelves connecting wire, on slow shelves connecting wire feedback to the stabiliser, be connected with control module on the stabiliser, still be equipped with the master switch on the motor, master switch and motor body electric connection, be equipped with current sensor on the master switch, current sensor and control module electric connection.
Preferably, the motor body is provided with a temperature sensor, and the temperature sensor is electrically connected with the control module.
Preferably, the master switch is a soft switch.
The utility model discloses a set up the stabiliser between motor body and control module, can reduce instantaneous voltage and the reverse electromotive force that change over switch produced when switching through the stabiliser, and adopt soft switch as master switch, can effectively avoid the relay to produce the spark, and set up current sensor on master switch and induce-current, when the locked-rotor produces the heavy current, control module can produce an overcurrent protection to the motor and close the master switch of motor; the utility model has the advantages of simple structure, reasonable design, can effectively reduce produced electromotive force of change over switch, protection motor control circuit.
Drawings
Fig. 1 is a block diagram of an embodiment of the present invention.
In the figure: 1. a motor body; 2. a transfer switch; 3. a relay; 4. a voltage regulator; 5. a fast-gear connecting line; 6. a slow-gear connecting wire; 7. a control module; 8. a master switch; 9. a current sensor; 10. a temperature sensor.
Detailed Description
The technical solution of the present invention is further specifically described below by way of specific embodiments and with reference to the accompanying drawings.
Example (b):
the protector for the direct current motor shown in fig. 1 comprises a motor body 1, wherein a change-over switch 2 and a relay 3 for adjusting the rotation speed of the motor are arranged on the motor body 1, a voltage stabilizer 4 is arranged on the motor body 1, a fast-gear connecting wire 5 and a slow-gear connecting wire 6 are arranged between the relay 3 and the voltage stabilizer 4, a switching signal of the change-over switch 2 is fed back to the voltage stabilizer 4 through the fast-gear connecting wire 5 and the slow-gear connecting wire 6, the voltage stabilizer 4 is connected with a control module 7, the motor is also provided with a main switch 8, the main switch 8 is a soft switch, the main switch 8 is electrically connected with the motor body 1, the main switch 8 is provided with a current sensor 9, and the current sensor 9 is electrically connected with the control module 7; the motor comprises a motor body 1 and is characterized in that a temperature sensor 10 is arranged on the motor body 1, and the temperature sensor 10 is electrically connected with a control module 7.
The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the scope of the claims.
Claims (3)
1. The utility model provides a direct current motor protector, includes motor body (1), be equipped with change over switch (2), relay (3) that are used for adjusting motor speed on motor body (1), its characterized in that: be equipped with stabiliser (4) on motor body (1), be equipped with fast shelves connecting wire (5), slow shelves connecting wire (6) between relay (3) and stabiliser (4), the switching signal of change over switch (2) feeds back on stabiliser (4) through fast shelves connecting wire (5), slow shelves connecting wire (6), be connected with control module (7) on stabiliser (4), still be equipped with master switch (8) on the motor, master switch (8) and motor body (1) electric connection, be equipped with current sensor (9) on master switch (8), current sensor (9) and control module (7) electric connection.
2. The dc motor protector of claim 1, wherein: the motor is characterized in that a temperature sensor (10) is arranged on the motor body (1), and the temperature sensor (10) is electrically connected with the control module (7).
3. The dc motor protector of claim 1, wherein: the main switch (8) is a soft switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021834306.4U CN212849835U (en) | 2020-08-28 | 2020-08-28 | DC motor protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021834306.4U CN212849835U (en) | 2020-08-28 | 2020-08-28 | DC motor protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212849835U true CN212849835U (en) | 2021-03-30 |
Family
ID=75141823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021834306.4U Active CN212849835U (en) | 2020-08-28 | 2020-08-28 | DC motor protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212849835U (en) |
-
2020
- 2020-08-28 CN CN202021834306.4U patent/CN212849835U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |