CN203984296U - The control circuit with oil pump defencive function - Google Patents
The control circuit with oil pump defencive function Download PDFInfo
- Publication number
- CN203984296U CN203984296U CN201420350743.7U CN201420350743U CN203984296U CN 203984296 U CN203984296 U CN 203984296U CN 201420350743 U CN201420350743 U CN 201420350743U CN 203984296 U CN203984296 U CN 203984296U
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- CN
- China
- Prior art keywords
- contactor
- phase
- opened contact
- normally opened
- oil pump
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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.)
- Expired - Fee Related
Links
- 238000000819 phase cycle Methods 0.000 claims abstract description 30
- 230000001012 protector Effects 0.000 claims abstract description 18
- 230000001681 protective effect Effects 0.000 claims description 7
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 239000003921 oil Substances 0.000 abstract description 13
- 239000010721 machine oil Substances 0.000 abstract description 5
- 230000005611 electricity Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
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- Control Of Positive-Displacement Pumps (AREA)
Abstract
A kind of control circuit with oil pump defencive function, comprise phase sequence and phase failure protector, start button and two contactors, three phase mains accesses buckle machine motor through the main normally opened contact of two contactors with different phase sequences respectively, the three phase mains of the input termination buckle machine of described phase sequence and phase failure protector, the first normally opened contact of start button is first assisted normally opened contact and connects with the first contactor, after being connected in series with the normally-closed contact of phase failure protector with phase sequence again, control the control coil of the first contactor, the second normally opened contact of start button is first assisted normally opened contact and connects with the second contactor, after being connected in series with the normally opened contact of phase failure protector with phase sequence again, control the control coil of the second contactor.The utility model utilizes phase sequence and phase failure protector to detect power phase and by two contactors, automatically controls the access way of buckle machine power supply; prevent mobile buckle machine oil pump reversion; thereby protected the safety of buckle machine oil pump, improved the operating efficiency of buckle machine.
Description
Technical field
The utility model relates to a kind of control circuit of portable buckle machine, can prevent that mistake from appearring in phase sequence, and the safety of protection buckle machine motor and oil pump belongs to control technology field.
Background technology
The direction of rotation of threephase motor is decided by the order of connection of three-phase electricity; generally; the order of connection of motor has regulation; if there is mistake in phase sequence; motor and load thereof cannot normally be worked and even be damaged; therefore much equipment is all provided with phase sequence protective device of computer, when phase sequence occurs when wrong automatic cutting equipment power supply and sends alarm signal, could continue to move after staff adjusts phase sequence.But for portable buckle machine, because its place to use often changes, need the frequent phase sequence of adjusting, not only greatly reduce operating efficiency, and easily damage motor and oil pump, to user, cause larger economic loss.
Utility model content
The purpose of this utility model is the drawback for prior art, and a kind of control circuit with oil pump defencive function is provided, to avoid phase sequence mistake, and the safety of protection buckle machine oil pump, the operating efficiency of raising buckle machine.
Problem described in the utility model realizes with following technical proposals:
A kind of control circuit with oil pump defencive function, formation comprises phase sequence and phase failure protector, start button and two contactors, three phase mains accesses buckle machine motor through the main normally opened contact of the first contactor and the main normally opened contact of the second contactor with different phase sequences respectively, the three phase mains of the input termination buckle machine of described phase sequence and phase failure protector, the first normally opened contact of start button is first assisted normally opened contact and connects with the first contactor, after being connected in series with the normally-closed contact of phase failure protector with phase sequence again, control the control coil of the first contactor, the second normally opened contact of start button is first assisted normally opened contact and connects with the second contactor, after being connected in series with the normally opened contact of phase failure protector with phase sequence again, control the control coil of the second contactor.
The above-mentioned control circuit with oil pump defencive function, also comprises stop button in formation, two normally-closed contacts of described stop button are connected in series with the control coil of the first contactor and the second contactor respectively.
The above-mentioned control circuit with oil pump defencive function, the first contactor normally-closed contact is serially connected in the control loop of the second contactor, and the second contactor normally-closed contact is serially connected in the control loop of the first contactor.
The above-mentioned control circuit with oil pump defencive function, also comprises hot protective relay in formation, described hot protective relay is serially connected in the current supply circuit of buckle machine motor.
The above-mentioned control circuit with oil pump defencive function is provided with fuse between the main normally opened contact of the first contactor and the main normally opened contact of the second contactor and three phase mains.
The utility model utilizes phase sequence and phase failure protector to detect power phase and by two contactors, automatically controls the access way of buckle machine power supply; prevent mobile buckle machine oil pump reversion; thereby protected the safety of buckle machine oil pump, improved the operating efficiency of buckle machine.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Fig. 1 is electrical schematic diagram of the present utility model.
In figure, each list of reference numerals is: SB1, stop button; SB2, start button; KM1, the first contactor; KM1-1, the main normally opened contact of the first contactor; KM1-2, the auxiliary normally opened contact of the first contactor; KM1-3, the first contactor normally-closed contact; KM2, the second contactor; KM2-1, the main normally opened contact of the second contactor, KM2-2, the auxiliary normally opened contact of the second contactor, KM2-3, the second contactor normally-closed contact; PH, phase sequence and phase failure protector; M, motor, FU1, fuse, FR, hot protective relay.
Embodiment
Referring to Fig. 1, the utility model comprises stop button SB1, start button SB2, the first contactor KM1, the second contactor KM2, phase sequence and phase failure protector PH, fuse FU1 and hot protective relay FR.
Operation principle
When operator uses portable buckle machine at the A of factory building during across work, the normally-closed contact of phase sequence and phase failure protector PH is closed, when operator presses start button SB2, the first contactor KM1 inhales the auxiliary normally opened contact KM1-2 self-locking of merga pass the first contactor, motor M and oil pump forward, buckle machine is working properly; When operator uses portable buckle machine at the B of factory building during across work; if B across phase sequence from A across different; the normally-closed contact of phase sequence and phase failure protector PH disconnects; normally opened contact is closed; when operator presses start button SB2; the second contactor KM2 inhales the auxiliary normally opened contact KM2-2 self-locking of merga pass the second contactor, and motor M and oil pump be forward still.When operator presses stop button SB1, contactor dead electricity, motor M stops operating.The first contactor normally-closed contact KM1-3 and the second contactor normally-closed contact KM2-3 realize the interlocking of two contactors.This circuit can be adjusted power phase automatically, and protection motor, oil pump safety, avoid manually changing phase sequence, improved the operating efficiency of portable buckle machine.
Claims (5)
1. a control circuit with oil pump defencive function, it is characterized in that, it comprises phase sequence and phase failure protector (PH), start button (SB2) and two contactors, three phase mains accesses buckle machine motor (M) through the main normally opened contact of the first contactor (KM1-1) and the main normally opened contact of the second contactor (KM2-1) with different phase sequences respectively, the three phase mains of the input termination buckle machine of described phase sequence and phase failure protector (PH), the first normally opened contact of start button (SB2) is first assisted normally opened contact (KM1-2) and connects with the first contactor, after being connected in series with the normally-closed contact of phase failure protector (PH) with phase sequence again, control the control coil of the first contactor (KM1), the second normally opened contact of start button (SB2) is first assisted normally opened contact (KM2-2) and connects with the second contactor, after being connected in series with the normally opened contact of phase failure protector (PH) with phase sequence again, control the control coil of the second contactor (KM2).
2. the control circuit with oil pump defencive function according to claim 1; it is characterized in that; in formation, also comprise stop button (SB1), two normally-closed contacts of described stop button (SB1) are connected in series with the control coil of the first contactor (KM1) and the second contactor (KM2) respectively.
3. the control circuit with oil pump defencive function according to claim 1 and 2; it is characterized in that; the first contactor normally-closed contact (KM1-3) is serially connected in the control loop of the second contactor (KM2), and the second contactor normally-closed contact (KM2-3) is serially connected in the control loop of the first contactor (KM1).
4. the control circuit with oil pump defencive function according to claim 3, is characterized in that, also comprises hot protective relay (FR) in formation, and described hot protective relay (FR) is serially connected in the current supply circuit of buckle machine motor (M).
5. the control circuit with oil pump defencive function according to claim 4, is characterized in that, between the main normally opened contact of the first contactor (KM1-1) and the main normally opened contact of the second contactor (KM2-1) and three phase mains, is provided with fuse (FU1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420350743.7U CN203984296U (en) | 2014-06-30 | 2014-06-30 | The control circuit with oil pump defencive function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420350743.7U CN203984296U (en) | 2014-06-30 | 2014-06-30 | The control circuit with oil pump defencive function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203984296U true CN203984296U (en) | 2014-12-03 |
Family
ID=51981709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420350743.7U Expired - Fee Related CN203984296U (en) | 2014-06-30 | 2014-06-30 | The control circuit with oil pump defencive function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203984296U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104506109A (en) * | 2015-01-05 | 2015-04-08 | 齐齐哈尔轨道交通装备有限责任公司 | Motor control method and motor controller |
| CN106786409A (en) * | 2016-12-30 | 2017-05-31 | 西安奇维科技有限公司 | A kind of contact protection method based on power source for relay control reversion |
| CN107666260A (en) * | 2016-07-27 | 2018-02-06 | 发那科株式会社 | Control device of electric motor, method of motor control and computer-readable medium |
| CN110043481A (en) * | 2019-04-09 | 2019-07-23 | 中国石油化工股份有限公司 | A kind of latent oil Rodless oil extraction equipment is anti-reverse to restart protective device |
-
2014
- 2014-06-30 CN CN201420350743.7U patent/CN203984296U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104506109A (en) * | 2015-01-05 | 2015-04-08 | 齐齐哈尔轨道交通装备有限责任公司 | Motor control method and motor controller |
| CN107666260A (en) * | 2016-07-27 | 2018-02-06 | 发那科株式会社 | Control device of electric motor, method of motor control and computer-readable medium |
| CN107666260B (en) * | 2016-07-27 | 2019-05-14 | 发那科株式会社 | Control device of electric motor, method of motor control and computer-readable medium |
| CN106786409A (en) * | 2016-12-30 | 2017-05-31 | 西安奇维科技有限公司 | A kind of contact protection method based on power source for relay control reversion |
| CN106786409B (en) * | 2016-12-30 | 2019-01-22 | 西安奇维科技有限公司 | A kind of contact protection method based on power source for relay control reversion |
| CN110043481A (en) * | 2019-04-09 | 2019-07-23 | 中国石油化工股份有限公司 | A kind of latent oil Rodless oil extraction equipment is anti-reverse to restart protective device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141203 |