CN208272613U - A kind of garbage power plant fly ash carry scrapper conveyor chain rupture judgement and control circuit - Google Patents
A kind of garbage power plant fly ash carry scrapper conveyor chain rupture judgement and control circuit Download PDFInfo
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- CN208272613U CN208272613U CN201820921876.3U CN201820921876U CN208272613U CN 208272613 U CN208272613 U CN 208272613U CN 201820921876 U CN201820921876 U CN 201820921876U CN 208272613 U CN208272613 U CN 208272613U
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- scrapper conveyor
- relay
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- switch
- contactor
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Abstract
A kind of garbage power plant fly ash carry scrapper conveyor chain rupture judgement and control circuit, are related to field of electrical control.The A.C. contactor KM1 acted including time relay KT1, KT2, electrothermal relay KH1, intermediate relay KA1, start button SB1, stop button SB2, the driving motor close to switch LS and for controlling scrapper conveyor；Because the driven shaft of scrapper conveyor follows motor to rotate and rotate when working normally, time relay KT1, KT2 do not reach the time cycle will because close to switch LS state change due to obtain electric or power loss, it can not triggered time relay KA1, to which scrapper conveyor motor is constantly in working condition, but after the chain of scrapper conveyor disconnects, driven shaft will stop operating, intermediate relay KT1, it is motionless that KT2 will be fixed on state (obtaining electric or power loss), to make time relay KT1, a state for being chronically at electric in KT2, and then the normally-closed contact for triggering the time relay disconnects, motor control loop power-off, scrapper conveyor motor stalls.
Description
Technical field
The utility model relates to field of electrical control, specially a kind of garbage power plant fly ash carry scrapper conveyor chain rupture judgement and
Control circuit.
Background technique
The working principle of drag conveyor is scraper plate to be fixed on chain (composition scraper chain), as driving component.When
After the starting of head driving section, the sprocket wheel rotation on head axis is driven, makes scraper chain circular flow that material be driven to move along chute,
Until being unloaded to chain-drive section.Scraper chain completes the conveying of material around the stepless closed circulation operation of chain crop rotation.But very much
When scrapper conveyor chain be easy to fall down, if cannot find in time, motor, which continues to run, will result in burning for motor
And scratch board machine chain is stuck, brings inconvenience to the maintenance of scrapper conveyor.
Utility model content
The purpose of the utility model is to provide a kind of garbage power plant fly ash carry scrapper conveyor chain rupture judgement and control circuits, should
Control circuit can not only measure whether chain disconnects, and can conveniently timely close scrapper conveyor motor play protection motor and
The effect of scraper plate machine scraper.
Realizing the technical solution of above-mentioned purpose is: a kind of garbage power plant fly ash carry scrapper conveyor chain rupture judgement and control electricity
Road, it is characterised in that: including time relay KT1, KT2, electrothermal relay KH1, intermediate relay KA1, start button SB1, stop
The only A.C. contactor KM1 that button SB2, the driving motor close to switch LS and for controlling scrapper conveyor act；
Delay break contact KT1-1, KT2-1, the electrothermal relay KH1, start button of the described time relay KT1, KT2
SB1, stop button SB2, A.C. contactor KM1 coil mutually compose in series the first branch, the both ends of the start button SB1
Also and it is connected to the normally opened contact KM1-1 of A.C. contactor KM1；
The coil close to switch LS and intermediate relay KA1 mutually composes in series second branch；The ac contactor
The normally opened contact KM1-2 of device KM1, the normally-closed contact KA1-1 of intermediate relay KA1, time relay KT1 coil mutually concatenate
Form third branch；The normally opened contact KM1-3 of the A.C. contactor KM1, intermediate relay KA1 normally opened contact KA1-2, when
Between the coil of relay KT2 mutually compose in series the 4th branch；
The first branch, second branch, third branch, the 4th branch centre are parallel with one another.
Further, the close switch LS includes the gear of electromagnetic switch and irony, and the gear is mounted on scrapper conveyor
The engaging tooth of one end of driven shaft, the electromagnetic switch and gear cooperatively forms on-off circuit and is mounted on the rack of scrapper conveyor
On.
Working principle of the utility model is:
Scrapper conveyor run well in the case where, due to close to switch LS gear follow scrapper conveyor driven shaft rotation and
Rotation produces one normally-closed contact KA1- via intermediate relay KA1 to make to approach switch LS one pulse signal of generation
1 signal and a normally opened contact KA1-2 signal, control respectively two time relays KT1, KT2 coil electric and power loss,
It is connect again by delay break contact KT1-1, KT2-1 control exchange of the time relay KT1, KT2 for being serially connected in the first branch
The actuation and disconnection of tentaculum KM1 coil, to have the function that chain rupture is protected.
Because the driven shaft of scrapper conveyor follows motor to rotate and rotate when working normally, the time relay KT1, KT2 do not have
Reach the time cycle will because close to switch LS state change due to obtain electric or power loss, can not triggered time relay KA1, thus
Scrapper conveyor motor is constantly in working condition, but after the chain of scrapper conveyor disconnects, driven shaft will stop operating, it is intermediate after
It is motionless that electric appliance KT1, KT2 will be fixed on state (obtaining electric or power loss), so that a time relay be made to be in long-term
Electric state is obtained, and then the normally-closed contact for triggering the time relay disconnects, motor control loop power-off, scrapper conveyor motor stops
Rotation.
The utility model has the beneficial effects that can timely stop scraper plate electromechanics in the case where scratch board machine chain disconnects
Machine, avoid motor burn and chain it is stuck, greatly reduce cost of labor.
Detailed description of the invention
Fig. 1 is the working principle diagram of the utility model；
Fig. 2 is the schematic diagram close to switch；
Fig. 3 is the structural schematic diagram of gear.
Specific embodiment
As shown in Figure 1, the utility model include time relay KT1, KT2, electrothermal relay KH1, intermediate relay KA1,
The ac contactor that start button SB1, stop button SB2, the driving motor close to switch LS and for controlling scrapper conveyor act
Device KM1；
Delay break contact KT1-1, KT2-1 of the time relay KT1, KT2, electrothermal relay KH1, start button SB1, stop
Only button SB2, A.C. contactor KM1 coil mutually compose in series the first branch, the both ends of the start button SB1 also and connect
There is the normally opened contact KM1-1 of A.C. contactor KM1；
Coil close to switch LS and intermediate relay KA1 mutually composes in series second branch；A.C. contactor KM1's is normal
Open contact KM1-2, the normally-closed contact KA1-1 of intermediate relay KA1, time relay KT1 coil mutually compose in series third
Branch；Normally opened contact KA1-2, the time relay of the normally opened contact KM1-3 of the A.C. contactor KM1, intermediate relay KA1
The coil of KT2 mutually composes in series the 4th branch；
The first branch, second branch, third branch, the 4th branch centre are parallel with one another.
As shown in Figure 2,3, close to switch LS include electromagnetic switch 1 and irony gear 2, gear 2 be mounted on scrapper conveyor from
One end of moving axis 3, the electromagnetic switch 1 and the engaging tooth of gear 2 cooperatively form on-off circuit and are mounted on the rack of scrapper conveyor
On, when gear 2, which turns to engaging tooth and electromagnetic switch 1, to be cooperated, close to switch LS conducting, when gear 2 turn to it is two neighboring
When the gap of tooth and electromagnetic switch 1 cooperate, disconnected close to switch LS.
Working principle of the utility model is:
When normal work, start button SB1 is pressed, the coil of A.C. contactor KM1 obtains electric, scrapper conveyor starting operation, and
Self-insurance is formed by the normally opened contact KM1-1 of A.C. contactor KM1.
During scrapper conveyor runs well, since the gear 2 close to switch LS follows the rotation of scrapper conveyor driven shaft
And rotate, to make to approach switch LS one pulse signal of generation, one normally-closed contact is produced via intermediate relay KA1
KA1-1 signal and a normally opened contact KA1-2 signal, control respectively two time relays KT1, KT2 coil it is electric with
Power loss, then delay break contact KT1-1, KT2-1 of the time relay KT1, KT2 by being serially connected in the first branch control friendship
The actuation and disconnection of contactor KM1 coil are flowed, to have the function that chain rupture is protected.
Because the driven shaft of scrapper conveyor follows motor to rotate and rotate when working normally, the time relay KT1, KT2 do not have
Reach the time cycle will because close to switch LS state change due to obtain electric or power loss, can not triggered time relay KA1, thus
Scrapper conveyor motor is constantly in working condition, but after the chain of scrapper conveyor disconnects, driven shaft will stop operating, it is intermediate after
It is motionless that electric appliance KT1, KT2 will be fixed on state (electric or power loss), to make one in the time relay KT1, KT2
A state for being chronically at electric, and then the normally-closed contact for triggering the time relay disconnects, motor control loop power-off, scraper plate
Machine motor stalls.
Claims (2)
1. a kind of garbage power plant fly ash carry scrapper conveyor chain rupture judgement and control circuit, it is characterised in that: including the time relay
KT1, KT2, it electrothermal relay KH1, intermediate relay KA1, start button SB1, stop button SB2, approaches switch LS and is used for
Control the A.C. contactor KM1 of the driving motor movement of scrapper conveyor；
Delay break contact KT1-1, KT2-1 of the described time relay KT1, KT2, electrothermal relay KH1, start button SB1, stop
Only button SB2, A.C. contactor KM1 coil mutually compose in series the first branch, the both ends of the start button SB1 also and connect
There is the normally opened contact KM1-1 of A.C. contactor KM1；
The coil close to switch LS and intermediate relay KA1 mutually composes in series second branch；The A.C. contactor KM1
Normally opened contact KM1-2, the normally-closed contact KA1-1 of intermediate relay KA1, the coil of time relay KT1 mutually compose in series
Third branch；The normally opened contact KM1-3 of the A.C. contactor KM1, the normally opened contact KA1-2 of intermediate relay KA1, the time after
The coil of electric appliance KT2 mutually composes in series the 4th branch；
The first branch, second branch, third branch, the 4th branch centre are parallel with one another.
2. a kind of garbage power plant fly ash carry scrapper conveyor chain rupture judgement according to claim 1 and control circuit, feature
Be: the close switch LS includes the gear of electromagnetic switch and irony, and the gear is mounted on one end of scrapper conveyor driven shaft,
The engaging tooth of the electromagnetic switch and gear cooperatively forms on-off circuit and is mounted in the rack of scrapper conveyor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820921876.3U CN208272613U (en) | 2018-06-14 | 2018-06-14 | A kind of garbage power plant fly ash carry scrapper conveyor chain rupture judgement and control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820921876.3U CN208272613U (en) | 2018-06-14 | 2018-06-14 | A kind of garbage power plant fly ash carry scrapper conveyor chain rupture judgement and control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208272613U true CN208272613U (en) | 2018-12-21 |
Family
ID=64690606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820921876.3U Active CN208272613U (en) | 2018-06-14 | 2018-06-14 | A kind of garbage power plant fly ash carry scrapper conveyor chain rupture judgement and control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208272613U (en) |
-
2018
- 2018-06-14 CN CN201820921876.3U patent/CN208272613U/en active Active
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