CN202059357U - Control circuit for turning of alternating current motor - Google Patents
Control circuit for turning of alternating current motor Download PDFInfo
- Publication number
- CN202059357U CN202059357U CN2011200751695U CN201120075169U CN202059357U CN 202059357 U CN202059357 U CN 202059357U CN 2011200751695 U CN2011200751695 U CN 2011200751695U CN 201120075169 U CN201120075169 U CN 201120075169U CN 202059357 U CN202059357 U CN 202059357U
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- Prior art keywords
- alternating current
- reverse
- blocking tetrode
- tetrode thyristor
- current machine
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model discloses a control circuit for the turning of an alternating current motor, which is used for controlling the turning of the alternating current motor of a monitoring device and comprises an alternating current motor, a first controlled silicon switch, a second controlled silicon switch, a first optocoupler relay and a second optocoupler relay, wherein the first optocoupler relay is connected with the first controlled silicon switch, and the second optocoupler relay is connected with the second controlled silicon switch; and the first controlled silicon switch and the second controlled silicon switch are respectively connected with the alternating current motor. In the utility model, the first optocoupler relay and the second optocoupler relay are adopted for respectively controlling the on-off of the first controlled silicon switch and the second controlled silicon switch, so as to control the positive and negative rotation of the motor; and the control on the on-off of the controlled silicon switches does not need the mechanical contact, and the problem of contact burning does not exist, so that the stability of the control circuit for the turning of the alternating current motor is greatly increased, and the service life of products is prolonged.
Description
Technical field
The utility model relates to the safety monitoring technical field, the control circuit that particularly a kind of alternating current machine turns to.
Background technology
Operated by rotary motion has motor in ball at the uniform velocity, rotating by motor drives the camera rotation, as shown in Figure 1, existing at the uniform velocity ball adopts two relay K 1, and K2 controls turning to of alternating current machine, controls alternating current machine by the closed and disconnected of control end control relay and turns to, promptly when relay K 1 closure, K2 disconnection, the control alternating current machine rotates counterclockwise, and when relay K 2 closures, when K1 disconnects, the control alternating current machine clockwise rotates.
But, because the closed and disconnected of relay is realized by Mechanical Contact, can be on the contact of relay when relay closes by bigger electric current, if the repetitious closed and disconnected of relay, will inevitably cause its contact to be burnt, make that relay can not normally closed and disconnection, thereby cause turning to of alternating current machine out of control.
Thereby the control circuit that existing alternating current machine turns to is still waiting to improve and improve.
Summary of the invention
In view of above-mentioned the deficiencies in the prior art part, the control circuit that provides a kind of alternating current machine to turn to is provided the purpose of this utility model, can control alternating current machine by the break-make that optocoupler is controlled reverse-blocking tetrode thyristor and turn to, improve the stability of control circuit, prolong the useful life of product.
In order to achieve the above object, the utility model has been taked following technical scheme:
The control circuit that a kind of alternating current machine turns to, be used for the turning to of alternating current machine of supervising device controlled, it comprises alternating current machine, wherein, also comprise and be used to control first reverse-blocking tetrode thyristor that described alternating current machine rotates counterclockwise, be used to control second reverse-blocking tetrode thyristor that described alternating current machine clockwise rotates, first light coupling relay and being used to that is used to control the break-make of first reverse-blocking tetrode thyristor is controlled second light coupling relay of the break-make of second reverse-blocking tetrode thyristor; Described first light coupling relay is connected with first reverse-blocking tetrode thyristor, and second light coupling relay is connected with second reverse-blocking tetrode thyristor, and described first reverse-blocking tetrode thyristor is connected with described alternating current machine respectively with second reverse-blocking tetrode thyristor.
The control circuit that described alternating current machine turns to wherein, is connected with first reverse-blocking tetrode thyristor by first resistance at the output of first light coupling relay, passes through second resistance at the output of second light coupling relay and is connected with second reverse-blocking tetrode thyristor.
The control circuit that described alternating current machine turns to, wherein, described first reverse-blocking tetrode thyristor and second reverse-blocking tetrode thyristor are bi-directional thyristor switch.
The control circuit that described alternating current machine turns to, wherein, described supervising device is ball at the uniform velocity.
The control circuit that a kind of alternating current machine that the utility model provides turns to, control motor positive and inverse owing to control the break-make of first reverse-blocking tetrode thyristor, second reverse-blocking tetrode thyristor respectively by first light coupling relay, second light coupling relay, because the control of reverse-blocking tetrode thyristor break-make is not Mechanical Contact, the problem that does not exist the contact to burn, make the stability of the control circuit that alternating current machine turns to improve greatly, thereby prolonged the useful life of product.
Description of drawings
Fig. 1 turns to the circuit theory diagrams of control for the alternating current machine of prior art.
The alternating current machine that Fig. 2 provides for the utility model embodiment turns to the circuit theory diagrams of control.
Embodiment
The control circuit that the utility model provides a kind of alternating current machine to turn to, clearer, clear and definite for making the purpose of this utility model, technical scheme and effect, below with reference to accompanying drawing and give an actual example the utility model is further described.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
The control circuit that the utility model embodiment provides is mainly used in to be controlled turning to of the alternating current machine of supervising device, particularly the turning to of alternating current machine of ball is at the uniform velocity controlled.See also Fig. 2, described control circuit comprises alternating current machine M1, the first reverse-blocking tetrode thyristor Q1, the second reverse-blocking tetrode thyristor Q2, the first light coupling relay U1 and the second light coupling relay U2.
Wherein, the described first light coupling relay U1 is connected with the first reverse-blocking tetrode thyristor Q1, is used to control the break-make of the first reverse-blocking tetrode thyristor Q1, and the second light coupling relay U2 is connected with the second reverse-blocking tetrode thyristor Q2, is used to control the break-make of the second reverse-blocking tetrode thyristor Q2.In the present embodiment, the first light coupling relay U1 and the second light coupling relay U2 are the optic coupling element of four pins, and signal is from the 2nd pin input of optic coupling element, again by the 3rd pin output control signal corresponding.
The described first reverse-blocking tetrode thyristor Q1 all is connected with described alternating current machine M1 with the second reverse-blocking tetrode thyristor Q2, the first reverse-blocking tetrode thyristor Q1 is used to control alternating current machine M1 and rotates counterclockwise, the second reverse-blocking tetrode thyristor Q2 is used to control described alternating current machine M1 and clockwise rotates, i.e. first reverse-blocking tetrode thyristor Q1 control alternating current machine M1 rotates to first direction, and second reverse-blocking tetrode thyristor Q2 control alternating current machine M1 is to rotating in the opposite direction with first party.
With in the specific implementation, the described first reverse-blocking tetrode thyristor Q1 and the second reverse-blocking tetrode thyristor Q2 are bi-directional thyristor switch, and be connected with the first reverse-blocking tetrode thyristor Q1 by first resistance R 1 at the output (i.e. the 3rd pin of the first light coupling relay U1) of the first light coupling relay U1, pass through second resistance R 2 at the output (i.e. the 3rd pin of the second light coupling relay U2) of the second light coupling relay U2 and be connected with the second reverse-blocking tetrode thyristor Q2.This first resistance R 1 and second resistance R, the 2 main metering functions that rise prevent that the electric current of the first reverse-blocking tetrode thyristor Q1 and the second reverse-blocking tetrode thyristor Q2 is too high.
Below the operation principle of the control circuit that turns to of alternating current machine that the utility model embodiment is provided be elaborated:
Clockwise, control signal is imported from the first light coupling relay U1 and the second light coupling relay U2 the 2nd pin counterclockwise, by the 3rd pin of first, second light coupling relay control signal is outputed to the G port of first, second controllable silicon switch, control the break-make of first, second controllable silicon switch.When needs control alternating current machine M1 clockwise rotates, control the second reverse-blocking tetrode thyristor Q2 conducting by the second light coupling relay U2, control the first reverse-blocking tetrode thyristor Q1 by the first light coupling relay U1 simultaneously and turn-off, alternating current machine M1 is clockwise rotated; When needs control alternating current machine M1 rotates counterclockwise, control the first reverse-blocking tetrode thyristor Q1 conducting by the first light coupling relay U1, control the second reverse-blocking tetrode thyristor Q2 by the second light coupling relay U2 simultaneously and turn-off, alternating current machine M1 is rotated counterclockwise.
In sum, the control circuit that a kind of alternating current machine that the utility model provides turns to, control the break-make of first reverse-blocking tetrode thyristor, second reverse-blocking tetrode thyristor by first light coupling relay, second light coupling relay respectively and control motor positive and inverse, because the control of reverse-blocking tetrode thyristor break-make is not Mechanical Contact, the problem that does not exist the contact to burn, make the stability of the control circuit that alternating current machine turns to improve greatly, thereby prolonged the useful life of product.
Be understandable that; for those of ordinary skills; can be equal to replacement or change according to the technical solution of the utility model and utility model design thereof, and all these changes or replacement all should belong to the protection range of the appended claim of the utility model.
Claims (4)
1. control circuit that alternating current machine turns to, be used for the turning to of alternating current machine of supervising device controlled, it comprises alternating current machine, it is characterized in that, also comprise and be used to control first reverse-blocking tetrode thyristor that described alternating current machine rotates counterclockwise, be used to control second reverse-blocking tetrode thyristor that described alternating current machine clockwise rotates, first light coupling relay and being used to that is used to control the break-make of first reverse-blocking tetrode thyristor is controlled second light coupling relay of the break-make of second reverse-blocking tetrode thyristor; Described first light coupling relay is connected with first reverse-blocking tetrode thyristor, and second light coupling relay is connected with second reverse-blocking tetrode thyristor, and described first reverse-blocking tetrode thyristor is connected with described alternating current machine respectively with second reverse-blocking tetrode thyristor.
2. the control circuit that alternating current machine as claimed in claim 1 turns to, it is characterized in that, be connected with first reverse-blocking tetrode thyristor by first resistance at the output of first light coupling relay, pass through second resistance at the output of second light coupling relay and be connected with second reverse-blocking tetrode thyristor.
3. the control circuit that alternating current machine as claimed in claim 1 or 2 turns to is characterized in that, described first reverse-blocking tetrode thyristor and second reverse-blocking tetrode thyristor are bi-directional thyristor switch.
4. the control circuit that alternating current machine as claimed in claim 1 turns to is characterized in that, described supervising device is ball at the uniform velocity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200751695U CN202059357U (en) | 2011-03-21 | 2011-03-21 | Control circuit for turning of alternating current motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200751695U CN202059357U (en) | 2011-03-21 | 2011-03-21 | Control circuit for turning of alternating current motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202059357U true CN202059357U (en) | 2011-11-30 |
Family
ID=45019320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200751695U Expired - Lifetime CN202059357U (en) | 2011-03-21 | 2011-03-21 | Control circuit for turning of alternating current motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202059357U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105932928A (en) * | 2016-04-29 | 2016-09-07 | 昆山恒巨电子有限公司 | Hoisting motor elevating control circuit |
-
2011
- 2011-03-21 CN CN2011200751695U patent/CN202059357U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105932928A (en) * | 2016-04-29 | 2016-09-07 | 昆山恒巨电子有限公司 | Hoisting motor elevating control circuit |
| CN105932928B (en) * | 2016-04-29 | 2018-05-22 | 昆山恒巨电子有限公司 | Lifting motor elevating control circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20180123 Granted publication date: 20111130 |
|
| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20210123 Granted publication date: 20111130 |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111130 |