CN2886777Y - A dual-contactor interlocking control device - Google Patents
A dual-contactor interlocking control device Download PDFInfo
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- CN2886777Y CN2886777Y CNU2006200128595U CN200620012859U CN2886777Y CN 2886777 Y CN2886777 Y CN 2886777Y CN U2006200128595 U CNU2006200128595 U CN U2006200128595U CN 200620012859 U CN200620012859 U CN 200620012859U CN 2886777 Y CN2886777 Y CN 2886777Y
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- contactor
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- contact
- parallel connection
- control device
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Abstract
An interlocking control device for dual contactor belongs to electrical control technique, which comprises two contactors (CJ1) and (CJ2), a time delay relay (SJ0), and three control button switches (QA), (QA1) and (QA2). The utility is characterized in that the node paralleled by the normally open contact (CJ1-1) of the contactor (CJ1) and control button switches (QA1) is connected in series with the node paralleled by the break contacts (CJ2-2) of the contactor (CJ2), the moving contact (SJ0-1) of the time delay relay (SJ0). The node paralleled by the normally open contact (CJ2-2) of the contactors (CJ2) and control button switches (QA2) is connected in series with the node paralleled by the break contacts (CJ2-2) of the contactor (CJ2) and the moving contact (SJ0-2) of the time delay relay (SJ0). The moving contact (CJ1-3) of the contactor (CJ1) is connected in parallel with the moving contact (CJ2-3) of the contactor (CJ2). The utility model effectively solves the control question of starting in random order and interlocking with each other.
Description
Technical field
The utility model relates to Electrical Control Technology, but two contactor interlocking control device that especially a kind of random order starts.
Background technology
In the Electric Traction occasion, the phenomenon that avoid Liang Tai and the high-power squirrel-cage threephase asynchronous more than two to start simultaneously as much as possible takes place.Because this motor is when starting, starting current can reach 5～7 times of rated current, for example, and the MG150/375W type coal-winning machine that coal-winning machine manufacturing company in Wuxi produces, supply power voltage is 1140V, and the hydraulic oil pump power of electric motor is that 75KW, left and right sides cut power of electric motor respectively are 150KW.When starting coal-winning machine, three motor start simultaneously, starting current can reach more than 375 * 0.7 * 5=1575A, impact to electrical network is quite serious, especially many high power motors start simultaneously, impact to electrical network is quite big, can make electrical network produce overload, voltage seriously descends, influence adverse consequencess such as other equipment can not normally move, therefore, during complete machine operation test after MG150/375W type coal-winning machine is being done maintenance, because three motor start simultaneously, impulse current is too big, and the step-down station is overcurrent tripping repeatedly, make overall test to carry out, have to get rid of the cutting motor of an end, reduced starting current, operation test can only be carried out in segmentation.
The coal-face situation is all the more so under coal mine, so, must be modified into the separate unit sequence starting to two cut motor of coal-winning machine, allow them that certain time interval is arranged, could address this problem effectively.Existing improvement technology is used two vacuum contactors, a time relay and three control buttons, can finish the whole process of separate unit sequence starting.Suppose to press the start button of left cut motor, first vacuum contactor adhesive and self-insurance, left cut motor gets electric operation, simultaneously, the normal opened contact closure of vacuum contactor auxiliary contact, turn-on time relay power supply, the time relay gets, the time-delay beginning, after 3～5 seconds of time-delay, the startup loop of right cut motor is connected in the normal opened contact timing closing of the time relay, at this moment if press the start button of bottom right cut motor, right cut motor just can start running.Can avoid effectively than the impact of great start-up current like this electrical network.This improvement technology is used widely on the coal-winning machine of types such as MG150/375W, MG160/375W.But, during real work,, perfect inadequately at the scene though this Starting mode can solve practical problem.One, this Starting mode can only be moved in order, promptly starts second behind startup first platform earlier, is impracticable if the boot sequence of two motors is reversed; Its two, if can only allow second work in the work, do not allow first running, do not realize yet.Therefore, prior art also need solve and start the also control problem of energy interlocking in any order.
The utility model content
For addressing the above problem, the utility model provides a kind of pair of contactor interlocking control device, and this device can not only be realized the problem that the random order of separate unit motor starts, and can also only realize the problem that any separate unit motor works independently.
For achieving the above object, the present invention adopts following technical scheme:
A kind of pair of contactor interlocking control device, comprise: two contactor CJ1 and CJ2, time relay sj 0 and three control button switch QA, QA1 and QA2, it is characterized in that the node after the make contact SJ0-1 parallel connection of the node after the normally opened contact CJ1-1 of described contactor CJ1 and the push-button switch QA1 parallel connection and the break contact CJ2-2 of contactor CJ2 and time relay sj 0 is connected; Node after the make contact SJ0-2 parallel connection of the node after the normally opened contact CJ2-2 of described contactor CJ2 and the push-button switch QA2 parallel connection and the break contact CJ2-2 of contactor CJ2 and time relay sj 0 is connected; The make contact CJ2-3 parallel connection of the make contact C11-3 of described contactor CJ1 and contactor CJ2; Above-mentioned three groups of parallel circuitss back in parallel again two end nodes connect the both positive and negative polarity of power supply respectively.
Above-mentioned pair of contactor interlocking control device is characterized in that, described control button switch QA is connected on above-mentioned three groups of parallel circuitss again on the bus after the parallel connection.
Above-mentioned pair of contactor interlocking control device, described contactor is a vacuum contactor.
The utility model compared with prior art has following beneficial effect:
Of the present utility model pair of contactor interlocking control device can not only be realized the problem that the random order of separate unit motor starts, and can also only realize the problem that any separate unit motor works independently, and effectively solved to start the also control problem of energy interlocking in any order.
Below in conjunction with the drawings and specific embodiments the utility model is done further detailed description.
Description of drawings
Fig. 1 is the circuit theory diagrams of the utility model execution mode.
Embodiment
Please refer to Fig. 1, two contactor interlocking control device of this utility model, comprise: two contactor CJ1 and CJ2, time relay sj 0 and three control button switch QA, QA1 and QA2, the node after the make contact SJ0-1 parallel connection of the node after the normally opened contact CJ1-1 of described contactor CJ1 and the push-button switch QA1 parallel connection and the break contact CJ2-2 of contactor CJ2 and time relay sj 0 is connected; Node after the make contact SJ0-2 parallel connection of the node after the normally opened contact CJ2-2 of described contactor CJ2 and the push-button switch QA2 parallel connection and the break contact CJ2-2 of contactor CJ2 and time relay sj 0 is connected; The make contact CJ2-3 parallel connection of the make contact CJ1-3 of described contactor CJ1 and contactor CJ2; Above-mentioned three groups of parallel circuitss back in parallel again two end nodes connect the both positive and negative polarity of AC36V power supply respectively.
Wherein control button switch QA is connected on above-mentioned three groups of parallel circuitss again on the bus after the parallel connection.Described contactor is a vacuum contactor.
Refer again to Fig. 1, describe circuit theory of the present utility model in detail: if press the QA1 button earlier, start-up course is as follows: 36V-QA1/CJ1-1-CJ2-2/SJ0-1-CJ1 coil-36V.That is: press the button QA1, the coil of contactor CJ1 gets electric adhesive, and the normally opened contact CJ1-1 of contactor CJ1 connects, the CJ1-1 self-insurance; Disconnect the break contact CJ1-2 of contactor, pin contactor CJ2 wire loop; Connect the make contact CJ1-3 of contactor, time relay sj 0 must be established the beginning time-delay by cable, and after 3～5 seconds of delaying time, its make contact SJ0-1, SJ0-2 closure are for the startup of contactor CJ2 is got ready.At this moment if press then 36V-QA2/CJ2-1-CJ1-2/SJ0-2-CJ2 coil-36V of QA2, that is: press the button QA2, the contact SJ0-2 on of the time relay, the coil of contactor CJ2 gets electric adhesive, and the coil of contactor CJ2 gets electric adhesive, the CJ2-1 self-insurance; Disconnect the break contact CJ2-2 of contactor CJ2, at this moment continue to keep the adhesive of contactor CJ1 by SJ0-1; The make contact CJ2-3 this moment of the CJ1-3 in parallel with CJ2-3 that connects contactor CJ2 is closed.If press the QA2 button earlier, its course of work and to press the QA1 button earlier be identical.So the novelty of this circuit and distinctive feature are not to be subjected to button to press the restriction of sequencing, which is exactly first by earlier, and can accomplishes mutual locking, sequence starting, can also accomplish the unit independent operation.
Claims (3)
1, a kind of pair of contactor interlocking control device, comprise: two contactors (CJ1) and (CJ2), a time relay (SJ0) and three control button switches (QA), (QA1) and (QA2), it is characterized in that the node after make contact (SJ0-1) parallel connection of the node after the normally opened contact (CJ1-1) of described contactor (CJ1) and push-button switch (QA1) parallel connection and the break contact (CJ2-2) of contactor (CJ2) and the time relay (SJ0) is connected; Node after make contact (SJ0-2) parallel connection of the node after the normally opened contact (CJ2-2) of described contactor (CJ2) and push-button switch (QA2) parallel connection and the break contact (CJ2-2) of contactor (CJ2) and the time relay (SJ0) is connected; Make contact (CJ2-3) parallel connection of the make contact (CJ1-3) of described contactor (CJ1) and contactor (CJ2); Above-mentioned three groups of parallel circuitss back in parallel again two end nodes connect the both positive and negative polarity of power supply respectively.
2, according to claim 1 pair of contactor interlocking control device is characterized in that, described control button switch (QA) is connected on above-mentioned three groups of parallel circuitss again on the bus after the parallel connection.
3, according to claim 1 pair of contactor interlocking control device is characterized in that described contactor is a vacuum contactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200128595U CN2886777Y (en) | 2006-04-17 | 2006-04-17 | A dual-contactor interlocking control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200128595U CN2886777Y (en) | 2006-04-17 | 2006-04-17 | A dual-contactor interlocking control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2886777Y true CN2886777Y (en) | 2007-04-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006200128595U Expired - Fee Related CN2886777Y (en) | 2006-04-17 | 2006-04-17 | A dual-contactor interlocking control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2886777Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102343874A (en) * | 2011-07-11 | 2012-02-08 | 上海延锋江森座椅有限公司 | Electric regulating switch control module of motor vehicle seat |
-
2006
- 2006-04-17 CN CNU2006200128595U patent/CN2886777Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102343874A (en) * | 2011-07-11 | 2012-02-08 | 上海延锋江森座椅有限公司 | Electric regulating switch control module of motor vehicle seat |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |