CN112350525A - Motor starting process protection device - Google Patents
Motor starting process protection device Download PDFInfo
- Publication number
- CN112350525A CN112350525A CN202011388081.9A CN202011388081A CN112350525A CN 112350525 A CN112350525 A CN 112350525A CN 202011388081 A CN202011388081 A CN 202011388081A CN 112350525 A CN112350525 A CN 112350525A
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- Prior art keywords
- wall
- motor
- starting process
- rotating shaft
- control box
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 230000008569 process Effects 0.000 title claims abstract description 31
- 230000009467 reduction Effects 0.000 claims description 15
- 238000005192 partition Methods 0.000 claims description 7
- 230000001603 reducing effect Effects 0.000 abstract description 16
- 238000013459 approach Methods 0.000 abstract description 5
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 230000009471 action Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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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
- H02K11/21—Devices for sensing speed or position, or actuated thereby
- H02K11/22—Optical devices
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/093—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against increase beyond, or decrease below, a predetermined level of rotational speed
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
- H02P1/02—Details of starting control
- H02P1/022—Security devices, e.g. correct phase sequencing
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/06—Machines characterised by the presence of fail safe, back up, redundant or other similar emergency arrangements
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Security & Cryptography (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention relates to the technical field of motor protection devices, and discloses a motor starting process protection device which comprises a rotating shaft, wherein a light reflecting paste on the rotating shaft is used as a signal source, a proximity sensor can acquire the number of rotating turns of the rotating shaft, so that the rotating speed of an output shaft of a motor main body is monitored, when the motor main body is started, the proximity sensor monitors the rotating speed of the rotating shaft, when the rotating speed is too high, the proximity sensor can control a driving motor to operate through a circuit board, the driving motor can enable a first clamping rod and a second clamping rod to approach each other through transmission, the first clamping rod and the second clamping rod approach each other and tightly clamp a rotating disc on the rotating shaft through a speed reducing plate, the rotating disc and the rotating shaft can be decelerated, the damage of internal parts of equipment caused by the too fast rotation of the rotating shaft is prevented, and the running safety of the motor main body is further improved.
Description
Technical Field
The invention relates to the technical field of motor protection devices, in particular to a motor starting process protection device.
Background
The motor is commonly called as a motor and refers to a device for realizing electric energy conversion or transmission according to the law of electromagnetic induction. With the development of society and the advancement of science and technology, the application of automatic and mechanized products in our lives is more and more extensive, and among various mechanical products, a motor is one of the most important driving structures.
The starting of the motor is an important process of the operation of the motor, and whether the motor can be normally started is directly related to the operation of equipment. However, in the actual use process, it is found that the existing motor often has an excessively high rotation speed due to current or voltage during the starting process, and in some more precise instruments, the motor running at an excessive speed can cause serious damage to the device itself, and even cause some dangerous accidents.
The Chinese patent publication number is: the invention patent of CN102412563B discloses a motor starting process protection device, which can quickly detect a fault occurring in the motor starting process, start the motor protection device in time, and avoid the motor from occurring an accident. In the above-mentioned patent, though can detect the trouble that takes place among the motor start-up process and in time start motor protection equipment, can't monitor the output shaft rotational speed among the motor start-up process, more can't slow down the output shaft of motor, prevent that its rotational speed from damaging equipment itself too fast, consequently still need improve.
Based on this, we propose a protection device for the starting process of the motor, and hopefully solve the defects in the prior art.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a motor starting process protection device which has the advantage that when the rotating speed of the motor output shaft is too high in the motor starting process, the motor output shaft can be decelerated in time.
(II) technical scheme
In order to achieve the purpose that the motor can be decelerated in time when the rotating speed of the output shaft of the motor is too high in the starting process of the motor, the invention provides the following technical scheme: the motor starting process protection device comprises a motor main body, wherein a rotating shaft is fixedly mounted at the top of an output shaft of the motor main body, a reflecting sticker is arranged on the outer wall of the rotating shaft, a control box is arranged on the outer wall of the motor main body, and a driving motor is fixedly mounted on the inner wall of the control box;
a driving wheel is fixedly mounted at the top of an output shaft of the driving motor, a driven wheel is meshed with the outer wall of the driving wheel, a screw rod is fixedly mounted at the center of the driven wheel, a first thread and a second thread are formed in the outer wall of the screw rod, the outer walls of the first thread and the second thread are respectively in threaded connection with a first nut and a second nut, and the outer walls of the first nut and the second nut are respectively and movably connected with a first clamping rod and a second clamping rod;
the bottom swing joint of first clamping bar and second clamping bar is on the inner wall of control box, the equal fixed mounting of one side inwards of first clamping bar and second clamping bar has the speed reduction board, the outer wall fixed mounting of speed reduction board has the rubber pad, the outer wall swing joint of rubber pad has the carousel, carousel fixed mounting is on the outer wall of pivot.
As a preferred technical scheme of the invention, the periphery of the control box is fixedly connected with mounting wings, the outer walls of the mounting wings are provided with mounting holes, the inner walls of the mounting holes are movably connected with mounting bolts, and the outer wall of the motor main body is provided with bolt grooves matched with the mounting bolts.
As a preferable technical solution of the present invention, the diameter of the driving wheel is larger than the diameter of the driven wheel.
As a preferable technical solution of the present invention, the first thread and the second thread are provided on the outer wall of the screw in opposite directions.
As a preferred technical scheme of the present invention, the inner wall of the speed reduction plate is fixedly provided with a spring, the tail end of the spring is fixedly connected with a pressing plate, the outer wall of the pressing plate is fixedly connected with a speed reduction lug, and the tail end of the speed reduction lug extends to the outside of the speed reduction plate and the rubber pad.
As a preferable technical solution of the present invention, the outer wall of the turntable is further provided with longitudinal deceleration stripes.
As a preferable technical scheme of the invention, a partition board is fixedly arranged on the inner wall of the control box, and a storage battery and a circuit board are arranged on the left side of the partition board.
As a preferred technical solution of the present invention, a proximity sensor is further fixedly mounted on an outer wall of the control box, the proximity sensor has a detection end, a position of the detection end corresponds to a position of the reflective sticker, an output end of the proximity sensor is electrically connected to an input end of the circuit board, and an output end of the circuit board is electrically connected to an input end of the driving motor.
(III) advantageous effects
Compared with the prior art, the invention provides a motor starting process protection device, which has the following beneficial effects:
1. this motor starting process protection device to epaxial reflection of light subsides are the signal source, and proximity sensor can carry out signal acquisition to the rotation number of turns of countershaft, and then realizes the rotational speed control to motor body output shaft, and when motor body was when the starting process, the rotational speed of proximity sensor monitoring pivot, when the rotational speed was too high, proximity sensor can control driving motor through the circuit board and move, slows down the countershaft.
2. This motor starting process protection device, driving motor operation can make first clamping bar and second clamping bar be close to each other through the transmission, and first clamping bar and second clamping bar are close to each other and are changeed epaxial carousel through the speed reduction plate clamp, can slow down carousel and pivot, prevent that the pivot from rotating the damage that leads to equipment internals at the excessive speed, further improvement the security of motor main body operation.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a side view of the present invention;
FIG. 3 is a partial cross-sectional view of the control box of the present invention;
FIG. 4 is an enlarged view of portion A of FIG. 3 according to the present invention;
FIG. 5 is a partial perspective view of the spindle of the present invention;
FIG. 6 is an enlarged view of a portion of the speed reducer of the present invention;
FIG. 7 is an enlarged view of portion B of FIG. 6 according to the present invention.
In the figure: 1-a motor main body, 2-a rotating shaft, 3-a control box, 4-a mounting wing, 5-a mounting hole, 6-a proximity sensor, 7-a reflective sticker, 8-a driving motor, 9-a driving wheel, 10-a driven wheel, 11-a screw, 12-a first thread, 13-a second thread, 14-a first nut, 15-a second nut, 16-a first clamping rod, 17-a second clamping rod, 18-a speed reducing plate, 19-a rubber pad, 20-a spring, 21-a pressing plate, 22-a speed reducing lug, 23-a turntable, 24-a partition plate, 25-a storage battery and 26-a circuit board.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1-7, the motor starting process protection device includes a motor main body 1, a rotating shaft 2 is fixedly installed at the top of an output shaft of the motor main body 1, a reflective sticker 7 is installed on the outer wall of the rotating shaft 2, a control box 3 is installed on the outer wall of the motor main body 1, and a driving motor 8 is fixedly installed on the inner wall of the control box 3;
a driving wheel 9 is fixedly mounted at the top of an output shaft of the driving motor 8, a driven wheel 10 is meshed with the outer wall of the driving wheel 9, a screw rod 11 is fixedly mounted at the center of the driven wheel 10, a first thread 12 and a second thread 13 are formed in the outer wall of the screw rod 11, the outer walls of the first thread 12 and the second thread 13 are respectively in threaded connection with a first nut 14 and a second nut 15, and the outer walls of the first nut 14 and the second nut 15 are respectively and movably connected with a first clamping rod 16 and a second clamping rod 17;
the bottom swing joint of first clamping bar 16 and second clamping bar 17 is on the inner wall of control box 3, and the equal fixed mounting of one side inwards of first clamping bar 16 and second clamping bar 17 has speed reduction plate 18, and the outer wall fixed mounting of speed reduction plate 18 has rubber pad 19, and the outer wall swing joint of rubber pad 19 has carousel 23, and carousel 23 fixed mounting is on the outer wall of pivot 2.
In this embodiment, fixedly connected with installation wing 4 around control box 3, mounting hole 5 has been seted up to the outer wall of installation wing 4, and the inner wall swing joint of mounting hole 5 has a mounting bolt, and motor body 1's outer wall is seted up with mounting bolt assorted bolt groove, can install control box 3 in the bolt groove on motor body 1 through mounting bolt, the fixed position of control box 3 of being convenient for.
In this embodiment, the diameter of the driving wheel 9 is larger than the diameter of the driven wheel 10, so as to play a role in increasing speed, and the driving wheel 9 can drive the driven wheel 10 to rotate quickly when rotating.
In this embodiment, the opening directions of the first thread 12 and the second thread 13 on the outer wall of the screw 11 are opposite, so that the first nut 14 and the second nut 15 move towards each other and approach to or depart from each other under the driving of the first thread 12 and the second nut 13.
In this embodiment, a spring 20 is fixedly mounted on an inner wall of the speed reducing plate 18, a pressing plate 21 is fixedly connected to a tail end of the spring 20, a speed reducing bump 22 is fixedly connected to an outer wall of the pressing plate 21, a tail end of the speed reducing bump 22 extends to the outer portions of the speed reducing plate 18 and the rubber pad 19, a longitudinal speed reducing stripe is further arranged on an outer wall of the rotary table 23, when the speed reducing plate 18 is tightly attached to the rotary table 23, the rubber pad 19 can reduce the speed of the rotary table 23, the speed reducing bump 22 can also retract inwards and compress the spring 20, and is ejected out under the action of the spring 20 and pushed against the outer wall of the rotary table 23 to reduce the speed of the rotary table 23, the outer wall of the rotary table 23 is further.
In this embodiment, a partition plate 24 is further fixedly mounted on the inner wall of the control box 3, and a battery 25 and a circuit board 26 are disposed on the left side of the partition plate 24.
In this embodiment, outer wall of control box 3 is fixed mounting still has proximity sensor 6, proximity sensor 6 has a sense terminal, the position of sense terminal is corresponding with the position of reflection of light subsides 7, and, proximity sensor 6's output and circuit board 26's input electric connection, circuit board 26's output and driving motor 8's input electric connection, use reflection of light subsides 7 on the pivot 2 as the signal source, proximity sensor 6 can carry out signal acquisition to the number of turns of rotation of pivot 2, and then realize the rotational speed control to motor body 1 output shaft, when motor body 1 is in the start-up process, proximity sensor 6 monitors the rotational speed of pivot 2, when the rotational speed is too high, proximity sensor 6 is signal transmission to circuit board 26, circuit board 26 controls driving motor 8 operation again, slow down to pivot 2.
The working principle and the using process of the invention are as follows:
the reflecting sticker 7 on the rotating shaft 2 is used as a signal source, the proximity sensor 6 can acquire the number of rotation turns of the rotating shaft 2, so that the rotating speed of the output shaft of the motor main body 1 is monitored, when the motor main body 1 is started, the proximity sensor 6 monitors the rotating speed of the rotating shaft 2, when the rotating speed is too high, the proximity sensor 6 transmits a signal to the circuit board 26, and the circuit board 26 controls the driving motor 8 to operate;
the driving motor 8 operates to drive the driving wheel 9 at the top of the output shaft of the driving wheel to rotate, the driving wheel 9 rotates to drive the screw rod 11 to rotate through the driven wheel 10 meshed with the outer wall of the driving wheel, the screw rod 11 rotates to drive the first thread 12 and the second thread 13 to rotate, and the first thread 12 and the second thread 13 are arranged in opposite directions, so that the first nut 14 and the second nut 15 move in opposite directions under the driving of the first thread 12 and the second thread 13 and approach to or depart from each other;
when the first nut 14 and the second nut 15 are far away from each other, the first clamping rod 16 and the second clamping rod 17 which are movably connected with the outer walls of the first nut and the second nut are gradually opened, and the rotating disc 23 is not decelerated;
when the first nut 14 and the second nut 15 approach each other, the first clamping rod 16 and the second clamping rod 17 movably connected to the outer walls of the first nut and the second nut are gradually closed, the first clamping rod 16 and the second clamping rod 17 are gradually closed, the rotating disc 23 on the rotating shaft 2 can be clamped through the speed reducing plate 18, when the speed reducing plate 18 is tightly attached to the rotating disc 23, the rubber pad 19 can reduce the speed of the rotating disc 23, the speed reducing lug 22 also retracts inwards and compresses the spring 20, the speed reducing lug 22 is ejected out under the action of the spring 20 and abuts against the outer wall of the rotating disc 23 to reduce the speed of the rotating disc 23, and the outer wall of the rotating disc 23 is also provided with longitudinal speed reducing stripes, so that the speed reducing effect is further ensured;
the rotating speed of the rotating shaft 2 is reduced while the rotating disc 23 is decelerated, so that damage to internal parts of equipment caused by the fact that the rotating shaft 2 rotates too fast can be prevented, and the running safety of the motor main body 1 is further improved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. Motor start-up process protection device, including motor body (1), its characterized in that: a rotating shaft (2) is fixedly installed at the top of an output shaft of the motor main body (1), a reflecting sticker (7) is arranged on the outer wall of the rotating shaft (2), a control box (3) is arranged on the outer wall of the motor main body (1), and a driving motor (8) is fixedly installed on the inner wall of the control box (3);
a driving wheel (9) is fixedly mounted at the top of an output shaft of the driving motor (8), a driven wheel (10) is meshed with the outer wall of the driving wheel (9), a screw rod (11) is fixedly mounted at the center of the driven wheel (10), a first thread (12) and a second thread (13) are formed in the outer wall of the screw rod (11), the outer walls of the first thread (12) and the second thread (13) are respectively in threaded connection with a first nut (14) and a second nut (15), and the outer walls of the first nut (14) and the second nut (15) are respectively and movably connected with a first clamping rod (16) and a second clamping rod (17);
the bottom swing joint of first clamping bar (16) and second clamping bar (17) is on the inner wall of control box (3), the equal fixed mounting in one side inwards of first clamping bar (16) and second clamping bar (17) has speed reduction plate (18), the outer wall fixed mounting of speed reduction plate (18) has rubber pad (19), the outer wall swing joint of rubber pad (19) has carousel (23), carousel (23) fixed mounting is on the outer wall of pivot (2).
2. The motor starting process protecting device according to claim 1, wherein: the motor is characterized in that the periphery of the control box (3) is fixedly connected with mounting wings (4), the outer wall of the mounting wings (4) is provided with mounting holes (5), the inner wall of each mounting hole (5) is movably connected with a mounting bolt, and the outer wall of the motor main body (1) is provided with a bolt groove matched with the mounting bolt.
3. The motor starting process protecting device according to claim 1, wherein: the diameter of the driving wheel (9) is larger than that of the driven wheel (10).
4. The motor starting process protecting device according to claim 1, wherein: the opening directions of the first threads (12) and the second threads (13) on the outer wall of the screw rod (11) are opposite.
5. The motor starting process protecting device according to claim 1, wherein: the inner wall fixed mounting of speed reduction board (18) has spring (20), the terminal fixedly connected with clamp plate (21) of spring (20), the outer wall fixedly connected with speed reduction lug (22) of clamp plate (21), the end of speed reduction lug (22) extends to the outside of speed reduction board (18) and rubber pad (19).
6. The motor starting process protecting device according to claim 1, wherein: the outer wall of the rotary table (23) is also provided with longitudinal deceleration stripes.
7. The motor starting process protecting device according to claim 1, wherein: the inner wall of the control box (3) is also fixedly provided with a partition plate (24), and the left side of the partition plate (24) is provided with a storage battery (25) and a circuit board (26).
8. The motor starting process protecting device according to claim 7, wherein: the outer wall of control box (3) still fixed mounting have proximity sensor (6), proximity sensor (6) have a sense terminal, the position of sense terminal is corresponding with the position of reflection of light subsides (7), and, the output of proximity sensor (6) and the input electric connection of circuit board (26), the output of circuit board (26) and the input electric connection of driving motor (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011388081.9A CN112350525A (en) | 2020-12-01 | 2020-12-01 | Motor starting process protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011388081.9A CN112350525A (en) | 2020-12-01 | 2020-12-01 | Motor starting process protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112350525A true CN112350525A (en) | 2021-02-09 |
Family
ID=74427656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011388081.9A Pending CN112350525A (en) | 2020-12-01 | 2020-12-01 | Motor starting process protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112350525A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109274194A (en) * | 2018-10-08 | 2019-01-25 | 嘉兴学院 | A kind of motor with braking function |
| CN211082627U (en) * | 2019-12-03 | 2020-07-24 | 西安鹏瑞石油科技有限公司 | Electric brake device of oil pumping unit |
| CN211209520U (en) * | 2019-12-16 | 2020-08-07 | 江苏金丰机电有限公司 | Motor with rotation speed monitoring function |
-
2020
- 2020-12-01 CN CN202011388081.9A patent/CN112350525A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109274194A (en) * | 2018-10-08 | 2019-01-25 | 嘉兴学院 | A kind of motor with braking function |
| CN211082627U (en) * | 2019-12-03 | 2020-07-24 | 西安鹏瑞石油科技有限公司 | Electric brake device of oil pumping unit |
| CN211209520U (en) * | 2019-12-16 | 2020-08-07 | 江苏金丰机电有限公司 | Motor with rotation speed monitoring function |
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Application publication date: 20210209 |
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