CN110768471A - Motor anti-sweeping boring device - Google Patents
Motor anti-sweeping boring device Download PDFInfo
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- CN110768471A CN110768471A CN201911025760.7A CN201911025760A CN110768471A CN 110768471 A CN110768471 A CN 110768471A CN 201911025760 A CN201911025760 A CN 201911025760A CN 110768471 A CN110768471 A CN 110768471A
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- motor
- pressing plate
- rotor
- conductor
- bore
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
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- Microelectronics & Electronic Packaging (AREA)
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Abstract
The invention discloses a motor anti-sweeping boring device, which relates to the technical field of motor anti-sweeping boring and comprises a conductor and an insulating fixing piece, wherein the conductor is fixed on a stator pressing plate through the insulating fixing piece, the insulating fixing piece is positioned between the conductor and the stator pressing plate and separates a conductive reed and the stator pressing plate, one side of the conductor close to the rotor pressing plate is positioned between the rotor pressing plate and the stator pressing plate, and a motor output shaft and the conductor are externally connected with a conductive feedback device on the outer side of a motor. The invention has the advantages of being beneficial to facilitating the workers to judge the situation that the motor is about to sweep the bore in time and avoiding the situation that the motor sweeps the bore.
Description
Technical Field
The invention relates to the technical field of motor anti-sweeping boring, in particular to a motor anti-sweeping boring device.
Background
The motor bore sweeping fault refers to friction between a rotor and a stator caused by the deviation of the rotating axis of the rotor in the motor. When the fault of the motor sweeping chamber is light, the motor can still start to operate, but the temperature is raised, and the winding is easy to burn out after a long time; when heavy, the motor will not start running.
The prior Chinese patent with publication number CN201282364 discloses a stator of a starting motor, belonging to motor parts; the motor stator can eliminate the phenomenon of rubbing between the edge of a magnetic pole and a rotor. The technical scheme is composed of a casing and tile-shaped magnetic poles fixed on the inner circumferential surface of the casing; the radius of curvature of the inner circumferential surface of each magnetic pole is larger than that of the outer circumferential surface of the rotor.
By adopting the scheme, the curvature radius of the inner circumferential surface of each magnetic pole is larger than that of the outer circumferential surface of the rotor. When the rotating axis of the motor rotor is greatly deviated, the condition that the rotor is swept and bored still occurs, and a point to be improved exists.
Referring to fig. 1, in the prior art, a motor includes a housing 4, a rotor 41, and a stator 42. The rotor 41 is rotatably mounted in the inner cavity of the housing 4, and the housing 4 is rotatably connected with the rotating shaft of the rotor 41 through a supporting bearing 43. The stator 42 is fixedly laid on the inner cavity wall of the housing 4 around the axis of rotation of the rotor 41. The part of the rotor 41 extending out of the housing 4 is an output shaft 411, a rotor pressing plate 412 is fixedly arranged on one side of the rotor 41 close to the output shaft 411, the rotor pressing plate 412 is abutted against the rotor 41, and a stator pressing plate 421 is fixedly arranged on one side of the stator 42 close to the output shaft. And, the rotor pressing plate 421, the rotating shaft of the rotor 41 and the supporting bearing 43 are made of conductive materials.
Disclosure of Invention
In view of the above technical problems, the invention aims to provide a motor bore sweeping prevention device, which firstly contacts a rotor pressing plate by means of a conductor and is communicated with the rotor pressing plate, and a conductive feedback device feeds back to a worker, so that the worker can conveniently and timely judge the condition that the motor is about to sweep the bore, and the motor bore sweeping condition can be avoided.
The technical purpose of the invention is realized by the following technical scheme:
the utility model provides a boring device is prevented sweeping by motor, includes electric conductor and insulating mounting, the electric conductor passes through insulating mounting to be fixed on the stator clamp plate, just insulating mounting is located between electric conductor and the stator clamp plate and the electrically conductive reed in interval and stator clamp plate, one side that the electric conductor is close to the rotor clamp plate is located between rotor clamp plate and the stator clamp plate, and motor output shaft and electric conductor are external in the outside of motor have electrically conductive feedback device.
Through adopting above-mentioned technical scheme, when rotor axis of rotation squints, the electro-body will take the lead to contact rotor pressing plate and switch on with rotor pressing plate to feedback to the staff by electrically conductive feedback device, help making things convenient for the staff in time to judge the condition that the motor is about to sweep the boring, and help avoiding the motor to sweep the condition of boring and take place.
The invention is further configured to: the insulating fixing part is a bakelite plate, the bakelite plate is bonded on the stator pressing plate, and the electric conductor is bonded on the bakelite plate.
Through adopting above-mentioned technical scheme, bond the bakelite board on the stator clamp plate to bond the electric conductor on the bakelite board, help making things convenient for the installation operation of staff to bakelite board and electric conductor, and help reducing the manufacturing cost who clicks.
The invention is further configured to: the electric conductor is a conductive reed.
By adopting the technical scheme: set up the electric conductor into electrically conductive reed, when rotor pressing plate contradicts with electrically conductive reed, electrically conductive reed will contract, reduces the conflict pressure between rotor pressing plate and the electrically conductive reed to help reducing the impaired condition of contradicting between rotor pressing plate and the electrically conductive reed and taking place.
The invention is further configured to: one side of the conductive reed, which is far away from the stator pressing plate, is provided with a conflict short sheet through bending, and the conflict short sheet is positioned between the rotor pressing plate and the stator pressing plate.
Through adopting above-mentioned technical scheme, will conflict the short sheet and set up between rotor pressing plate and stator pressing plate, help guaranteeing conflict short sheet and rotor pressing plate normal contact and normally electrically conduct.
The invention is further configured to: a contact bulge is formed on one side of the conductive reed close to the rotor pressing plate in the direction of the rotor pressing plate, and the side of the contact bulge close to the rotor pressing plate is arranged in an arc curved surface; when the rotor is swept, the rotor pressure plate will come into contact with the contact protrusion.
By adopting the technical scheme, when the rotor is swept and bored, the rotor pressing plate is contacted with the contact protrusion, so that the situation that the elastic pressing plate cuts the rotor pressing plate is reduced, and the abrasion speed between the rotor pressing plate and the conductive reed is delayed.
The invention is further configured to: the electric conductors are at least four in number on the stator pressing plate around the rotor rotating axis at even intervals, and the insulation fixing pieces correspond to the electric conductors one to one.
Through adopting above-mentioned technical scheme, set up four at least even intervals around rotor axis of rotation with the electric conductor on the stator clamp plate, help guaranteeing that the normal contact of rotor axis of rotation after the different directions skew with the electric conductor helps guaranteeing this motor to sweep normal operation of boring device.
The invention is further configured to: the electric conduction device is characterized in that the electric conductor and the supporting bearing are respectively and electrically connected in a power supply circuit of the motor through electric wires, the electric conduction feedback device is an alarm, and the alarm is connected with the electric conductor or the supporting bearing in series.
Through adopting above-mentioned technical scheme, when the electric conductor contacted with rotor pressing plate, the alarm will the circular telegram warning, further makes things convenient for the staff in time to judge the condition that the motor is about to sweep the boring, helps avoiding the condition that the motor swept the boring to take place.
The invention is further configured to: the electric conductor and the support bearing are electrically connected in a motor power supply circuit through electric wires, the electric conduction feedback device is an air switch, and the air switch is electrically connected in the motor power supply circuit; when the rotor sweeps the bore, the electric conductor and the support bearing are connected in series, and the circuit between the electric conductor and the support bearing and the motor are arranged in parallel in a power supply circuit of the motor.
By adopting the technical scheme, when the electric conductor is in contact with the rotating pressing plate, the electric conductor is communicated with the rotating pressing plate, the power supply circuit of the motor is in a short-circuit state, and the air switch automatically disconnects the power supply to the motor, so that the situation that the rotating axis of the rotor continuously deviates and the boring is swept is avoided.
Compared with the prior art, the invention has the following beneficial effects:
(1) the conductor is firstly contacted with the rotor pressing plate and is communicated with the rotor pressing plate, and the conducting feedback device feeds back the conducting feedback to the working personnel, so that the working personnel can conveniently and timely judge the situation that the motor is about to sweep the bore, and the situation that the motor sweeps the bore can be avoided;
(2) through setting up the electric conductor into electrically conductive reed to set up the contact arch on electrically conductive reed, help reducing the condition emergence that high-speed moving's rotor clamp plate contradicted the friction damage with electrically conductive reed.
Drawings
Fig. 1 is a full-section schematic view mainly showing the overall structure of a motor;
FIG. 2 is a schematic partial sectional view of a structure of an anti-bore-sweeping device of a motor according to an embodiment;
FIG. 3 is a schematic diagram of a power connection circuit of the alarm according to an embodiment;
fig. 4 is a schematic diagram of a circuit configuration of the second embodiment mainly showing the connection of the air switch.
Reference numerals: 1. a conductive reed; 11. contact with the short sheet; 111. a contact projection; 2. a bakelite plate; 3. a conductive feedback device; 31. an alarm; 32. an air switch; 4. a housing; 41. a rotor; 411. an output shaft; 412. a rotor pressing plate; 42. a stator; 421. a stator pressing plate; 43. and supporting the bearing.
Detailed Description
The present invention will be described in further detail with reference to examples and drawings, but the present invention is not limited to these examples.
The first embodiment is as follows:
referring to fig. 2 and 3, the motor bore sweeping prevention device comprises a conductive reed 1 and a bakelite plate 2, wherein the conductive body is fixed on a stator pressing plate 421 through the bakelite plate 2, the bakelite plate 2 is positioned between the conductive body and the stator pressing plate 421 and separates the conductive reed 1 from the stator pressing plate 421, one side of the conductive reed 1, which is close to a rotor pressing plate 412, is positioned between the rotor pressing plate 412 and the stator pressing plate 421, and a conductive feedback device 3 is externally connected to the motor output shaft 411 and the conductive reed 1 outside the motor. In actual operation, when the rotation axis of rotor 41 is deviated, conductive reed 1 first contacts rotor pressing plate 412 and is conducted with rotor pressing plate 412, and is fed back to the operator by conductive feedback device 3.
The bakelite plate 2 is bonded to the stator pressing plate 421, one side of the conductive reed 1 in the length direction is bonded to the bakelite plate 2, and the other side of the conductive reed 1 in the length direction points to the rotor pressing plate 412. One side of the conductive reed 1, which is far away from the stator pressing plate 421, is bent to form an interference tab 11, and the interference tab 11 is located between the rotor pressing plate 412 and the stator pressing plate 421. In addition, a contact protrusion 111 is formed on the side of the conductive reed 1 close to the rotor pressing plate 412 in the direction of the rotor pressing plate 412, and the side of the contact protrusion 111 close to the rotor pressing plate 412 is disposed in an arc-shaped curved surface. When rotor 41 is swept, rotor press plate 412 comes into contact with contact projection 111, and the wear rate between rotor press plate 412 and conductive reed 1 is retarded.
In order to ensure that the conductive reeds 1 monitor the different offset directions of the rotor 41, at least four conductive reeds 1 are uniformly arranged on the stator pressing plate 421 at intervals around the rotation axis of the rotor 41, and the bakelite plates 2 correspond to the conductive reeds 1 one by one.
The conductive reed 1 and the supporting bearing 43 are respectively and electrically connected in a power supply circuit of the motor through an electric wire, the conductive feedback device 3 is an alarm 31, and the alarm 31 is connected with the conductive reed 1 in series. When the conductive reed 1 is communicated with the supporting bearing 43, the alarm 31 gives an alarm and reminds workers that the boring sweeping condition of the motor occurs.
Example two:
referring to fig. 4, the motor anti-bore-sweeping device is different from the first embodiment in that: the conductive reed 1 and the support bearing 43 are electrically connected in a motor power supply circuit through electric wires, the conductive feedback device 3 is an air switch 32, and the air switch 32 is electrically connected in the motor power supply circuit; when the rotor 41 is swept and bored, the conductive reed 1 and the supporting bearing 43 are connected in series, and a circuit between the conductive reed 1 and the supporting bearing 43 is arranged in parallel with the motor in a power supply circuit of the motor. After the rotor 41 is swept and bored, the conductive reed 1 is conducted with the supporting bearing 43, and the air switch 32 is automatically turned off and stops supplying power to the motor in case of short circuit of the motor power supply circuit.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (8)
1. The motor bore sweeping prevention device is characterized by comprising a conductor and an insulation fixing piece, wherein the conductor is fixed on a stator pressing plate (421) through the insulation fixing piece, the insulation fixing piece is positioned between the conductor and the stator pressing plate (421) and separates a conductive reed (1) and the stator pressing plate (421), one side, close to a rotor pressing plate (412), of the conductor is positioned between the rotor pressing plate (412) and the stator pressing plate (421), and a motor output shaft (411) and the conductor are externally connected with a conductive feedback device (3) outside a motor.
2. The motor bore sweeping prevention device is characterized in that the insulation fixing piece is a bakelite plate (2), the bakelite plate (2) is bonded on the stator pressing plate (421), and the electric conductor is bonded on the bakelite plate (2).
3. The anti-bore-sweeping device of the motor as claimed in claim 1, wherein the conductor is a conductive reed (1).
4. The anti-bore-sweeping device of the motor is characterized in that one side, far away from the stator pressing plate (421), of the conductive reed (1) is bent to form an interference tab (11), and the interference tab (11) is located between the rotor pressing plate (412) and the stator pressing plate (421).
5. The anti-bore-sweeping device of the motor as claimed in claim 4, wherein a side of the conductive reed (1) close to the rotor pressing plate (412) is formed with a contact protrusion (111) towards the rotor pressing plate (412), and a side of the contact protrusion (111) close to the rotor pressing plate (412) is arranged in an arc curved surface;
when the rotor (41) sweeps the bore, the rotor pressure plate (412) will come into contact with the contact protrusion (111).
6. The anti-bore-sweeping device of the motor as claimed in claim 1, wherein the conductors are arranged on the stator pressing plate (421) at least four at regular intervals around the rotation axis of the rotor (41), and the insulation fixing pieces correspond to the conductors one by one.
7. The motor bore sweeping prevention device of claim 1, wherein the electric conductor and the support bearing (43) are respectively and electrically connected in a power supply circuit of the motor through electric wires, the conductive feedback device (3) is an alarm (31), and the alarm (31) is connected with the electric conductor or the support bearing (43) in series.
8. The motor bore sweeping prevention device as claimed in claim 1, wherein the electric conductor and the support bearing (43) are electrically connected in a motor power supply circuit through electric wires, the electric conduction feedback device (3) is an air switch (32), and the air switch (32) is electrically connected in the motor power supply circuit;
when the rotor (41) sweeps the bore, the electric conductor and the support bearing (43) are connected in series, and the circuit between the electric conductor and the support bearing (43) and the motor are arranged in parallel in the power supply circuit of the motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911025760.7A CN110768471A (en) | 2019-10-25 | 2019-10-25 | Motor anti-sweeping boring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911025760.7A CN110768471A (en) | 2019-10-25 | 2019-10-25 | Motor anti-sweeping boring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110768471A true CN110768471A (en) | 2020-02-07 |
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ID=69333817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911025760.7A Pending CN110768471A (en) | 2019-10-25 | 2019-10-25 | Motor anti-sweeping boring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110768471A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2329977Y (en) * | 1998-05-05 | 1999-07-21 | 张伟 | Self-testing motor for stator and rotor friction |
| CN203103921U (en) * | 2013-02-22 | 2013-07-31 | 杨永 | Motor protection device |
| DE102012201347A1 (en) * | 2012-01-31 | 2013-08-01 | Schaeffler Technologies AG & Co. KG | Electrical machine e.g. permanent-magnet synchronous motor for motor vehicle, has control unit that is arranged for detecting fault in the excitation magnetic field and for controlling actuator in case of error |
| CN206226220U (en) * | 2016-12-09 | 2017-06-06 | 北京金风科创风电设备有限公司 | Motor gas-gap early warning system |
-
2019
- 2019-10-25 CN CN201911025760.7A patent/CN110768471A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2329977Y (en) * | 1998-05-05 | 1999-07-21 | 张伟 | Self-testing motor for stator and rotor friction |
| DE102012201347A1 (en) * | 2012-01-31 | 2013-08-01 | Schaeffler Technologies AG & Co. KG | Electrical machine e.g. permanent-magnet synchronous motor for motor vehicle, has control unit that is arranged for detecting fault in the excitation magnetic field and for controlling actuator in case of error |
| CN203103921U (en) * | 2013-02-22 | 2013-07-31 | 杨永 | Motor protection device |
| CN206226220U (en) * | 2016-12-09 | 2017-06-06 | 北京金风科创风电设备有限公司 | Motor gas-gap early warning system |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200207 |