CN205823136U - Exchange door roller control circuit with lightning protection function - Google Patents

Abstract

This utility model relates to the exchange door roller control circuit of band lightning protection function, including input, alternating current generator, controller and brake electric magnetic coil；Described input includes live wire input, zero line input and ground wire input；Connect between described live wire input and zero line input and have varistor RV1；Varistor RV2 and the varistor RV3 being serially connected it is also associated with between described live wire input and zero line input；It is connected between the connection end of described varistor RV2 and varistor RV3 and ground wire input and has gas-discharge tube GDT；Described brake electric magnetic coil is provided with the first parallel winding and the second parallel winding；Described controller is provided with relay J 1, relay J 2, capacitor and control button；Described control button is provided with stop key, lifting key and decline key.This utility model can carry out lightning protection, saves energy to circuit, and circuit structure is simple, working stability.

Description

Exchange door roller control circuit with lightning protection function

Technical field

This utility model relates to rolling screen door technical field, and the exchange door roller particularly relating to band lightning protection function controls electricity Road.

Background technology

Rolling screen door lifting is driven by door roller, and rolling screen door lifting puts in place or midway stops, and not only door roller motor to stop Operating, also to brake to door roller, and otherwise due to the weight of rolling screen door self, rolling screen door can down be fallen.

Existing exchange door roller braking control device is mainly by brake disc, brake block, brake spring and solenoid (electricity Magnet) composition, under door roller halted state, the thrust of spring promote brake block and brake disc to be in close contact and brake；Volume During door machine work, solenoid energising attracts brake block, makes brake disc separate with brake block, is maintained to door roller and stops fortune Turn.Solenoid is general and door roller motor winding parallel, owing to the voltage at solenoid two ends is fixing, therefore, no matter It is that solenoid energising is sucked away from moment of brake block, or maintains brake block and the released state of brake disc, the electricity of solenoid Stream size is identical.It practice, before electric magnet is not operating, owing to iron core and the armature of electric magnet exist magnetic gap, therebetween Also there is a certain distance, so the moment of electric magnet action needs bigger electric current, and after electric magnet Guan Bi, unshakable in one's determination tight with armature Tight knot is closed, and does not has therebetween magnetic gap, forms closed magnetic circuit, and magnetic flux increases, and the electric current maintaining electric magnet Guan Bi just can be significantly Reduce.It is, solenoid energising is sucked away from the moment of brake block, it is desirable to have bigger electromagnetic attraction, namely require electricity Magnetic coil has bigger electric current, and maintenance is sucked away from state and has only to less electric current.Therefore, the solenoid of existing Parallel Design Waste a part of electric energy, also result in solenoid excessive heating.

Secondly, the control circuit of existing exchange door roller is typically provided 3-4 relay, its objective is to make the motor can be just Turn, reversion, and make interlock between relay, it is ensured that relay will not misoperation, so make circuit structure become complexity, expense The highest.

It addition, existing exchange door roller control circuit is typically with the element such as diode, relay, these elements are to voltage The most sensitive, such as thunderbolt, voltage is significantly beyond running voltage, and these elements will burn.In vast rural area, A lot of StoreFronts, garage are self-built, typically no installation lightning protection device, and the outdoor electric wire in these places is once struck by lightning, as Fruit does not take lightning protection measures, and the equipment that outdoor electric wire connects, and including a lot of elements of door roller control circuit, will be burnt Ruin.

Utility model content

This utility model overcomes the deficiencies in the prior art, it is provided that a kind of band lightning protection, energy saves energy, circuit knot Structure is simple, the door roller of working stability.

This utility model is achieved through the following technical solutions:

With the exchange door roller control circuit of lightning protection function, including input, alternating current generator, controller and brake electric Magnetic coil；Described input includes live wire input, zero line input and ground wire input, and described live wire input connects civil power Live wire, zero line input connect civil power zero line, ground wire input end grounding；Between described live wire input and zero line input Connect and have varistor RV1；The varistor RV2 being serially connected it is also associated with between described live wire input and zero line input With varistor RV3；It is connected between the connection end of described varistor RV2 and varistor RV3 and ground wire input and has gas Discharge tube GDT；Described brake electric magnetic coil is provided with the first parallel winding and the second parallel winding；Described controller is provided with relay J1, relay J 2, capacitor and control button；Described control button is provided with stop key, lifting key and decline key；Described lifting key One end and the normally-closed contact J21 of the coil of relay J 1, relay J 2 be connected in series；One end of described decline key and relay The coil of J2, the normally-closed contact J11 of relay J 1 are connected in series；The other end of described lifting key, decline the other end of key and stop Only one end of key is connected with each other, and the other end of stop key connects live wire input；Described lifting key and the normally opened of relay J 1 touch Point J12 is connected in parallel；The normally opened contact J22 of described decline key and relay J 2 is connected in parallel；The movable contact of described relay J 1 J13, the movable contact J23 of relay J 2 are all connected with zero line input；One end auxiliary connection winding of the main winding of described alternating current generator One end and connect live wire input；The other end of described main winding, the other end of auxiliary winding and capacitor are in parallel；Described electric capacity One end of device connects the normally opened contact J24 of relay J 2；The other end of described capacitor connects the normally opened contact of relay J 1 J14；One end of described first parallel winding interconnects mutually with live wire end, the live wire end of relay J 2 coil of relay J 1 coil Connecing, the other end connects zero line input；Described second parallel winding is parallel with time relay KT, the second parallel winding elder generation and time Between relay K T normally-closed contact KT1 series connection after in parallel with the coil of time relay KT and the first parallel winding again.

During work, such as rolling screen door to be opened, then press lifting key, the coil energized action of relay J 1, normally opened contact J12, J14 close, and normally-closed contact J11 disconnects, and KT1 is normally closed in time relay contact, the first parallel winding of brake electric magnetic coil With the second parallel winding all electric, produce bigger electromagnetic force, make brake block overcome the thrust of spring to separate with brake disc；Exchange Motor also electric rotating forward starts, after alternating current generator starts, time relay normally-closed contact KT1 is disconnected after time delay after a while Open, the second parallel winding power-off, only provided electromagnetic force by the first parallel winding, continue to the separation shape of brake block and brake disc State；Because normally-closed contact J11 disconnects, even if now pressing decline key, the coil of relay J 2 can not obtain electric, and relay J 2 will not There is misoperation；After pressing stop key, the coil losing electricity of relay J 1, contact J12, J14 recovery is normally opened, and contact J11 often recovers Closing, alternating current generator dead electricity shuts down, brake electric magnetic coil dead electricity, and door roller, by brake block pushing and withstanding brake disc, is carried out by spring Brake.In like manner, during rolling screen door to be closed, after pressing decline key, relay J 2 energized action, brake disc separates with brake block, hands over Stream motor reversal, rolling screen door declines, and equally, even if now pressing lifting key, the coil of relay J 1 can not obtain electric, relay J1 will not occur misoperation.When external cable is struck by lightning, when input voltage is beyond varistor RV1 threshold value, varistor RV1 turns on rapidly, by voltage clamp to threshold range, protects door roller control circuit；For further to door roller Control circuit carries out more effective lightning protection, also by varistor RV2, varistor RV3 and gas-discharge tube GDT ground connection, So, it is no matter live wire or zero line is hit by thunder and lightning, can discharge the most rapidly, by voltage clamp to threshold range.

Preferably, described varistor RV1 is 20D561K.

Preferably, described varistor RV2 is 20D561K.

Preferably, described varistor RV3 is 20D561K.

Preferably, described gas-discharge tube GDT is B8G600L.

Preferably, described first parallel winding connects rectifier bridge stack, and one end of the input of this rectifier bridge stack connects continues The live wire end of electrical equipment J1 coil and the live wire end of relay J 2 coil, the other end connects zero line input, and outfan connects first The two ends of parallel winding.Alternating current inputs the first parallel winding after becoming unidirectional current by rectifier bridge stack all wave rectification again, can disappear The vibrations unshakable in one's determination except the first parallel winding and eddy current, the electromagnetic force making the first parallel winding is more stable.

Preferably, the first travel switch and the second travel switch are also included；Described first travel switch and relay J 1 Coils connected in series；Described second travel switch and the coils connected in series of relay J 2.First travel switch and the second travel switch are set It is automatically stopped for making rolling screen door be raised or lowered to predetermined stop position.

The beneficial effects of the utility model are: at input parallel connection varistor RV1, when input voltage is beyond its threshold value Time, varistor RV1 turns on rapidly, by voltage clamp to threshold range, protects door roller control circuit；In parallel connection Also by varistor RV2, varistor RV3 and gas-discharge tube GDT ground connection after varistor RV1, so, no matter it is fire Line or zero line is hit by thunder and lightning, can discharge the most rapidly, by the door roller control in voltage clamp to threshold range, to rear class Circuit processed carries out effective lightning protection；Brake electric magnetic coil is divided into the first parallel winding and the second parallel winding, second Time relay coil in parallel on the circuit of parallel winding, after the normally-closed contact series connection of the second parallel winding and the time relay again In parallel with the first parallel winding, bigger electromagnetic force it is provided that when alternating current generator starts, alternating current generator can disconnect again after starting Second parallel winding circuit, correspondingly reduces electromagnetic force and maintains brake disc and the released state of brake block, thus reduce brake electric The maintenance work electric current of magnetic coil, saves energy；Door roller control circuit only arranges two relays just can play interlocked use, makes Relay will not misoperation, circuit structure is simple, and expense is relatively low.

Accompanying drawing explanation

Fig. 1 is circuit theory schematic diagram of the present utility model.

Detailed description of the invention

Below in conjunction with the accompanying drawings preferred embodiment of the present utility model is described in detail, so that advantage of the present utility model Can be easier to be readily appreciated by one skilled in the art with feature, thus protection domain of the present utility model is made apparent clearly Define.

As it is shown in figure 1, embodiment of the present utility model, including input, alternating current generator 1, controller and brake electric magnet-wire Circle；Described input includes that live wire input 2, zero line input 3 and ground wire input 4, described live wire input 2 connect civil power Live wire, zero line input 3 connects the zero line of civil power, ground wire input 4 ground connection；Described live wire input 2 and zero line input 3 Between connect have varistor RV1；Be also associated with between described live wire input 2 and zero line input 3 being serially connected is pressure-sensitive Resistance RV2 and varistor RV3；Connect between connection end and the ground wire input 4 of described varistor RV2 and varistor RV3 It is connected to gas-discharge tube GDT；Described brake electric magnetic coil is provided with the first parallel winding 5 and the second parallel winding 6；Described controller It is provided with relay J 1, relay J 2, capacitor 7 and controls button 8；Described control button 8 is provided with stop key 9, lifting key 10 and Decline key 11；The normally-closed contact J21 of one end of described lifting key 10 and the coil 12 of relay J 1, relay J 2 is connected in series； The normally-closed contact J11 of one end of described decline key 11 and the coil 13 of relay J 2, relay J 1 is connected in series；Described lifting key One end of the other end, the other end of decline key 11 and the stop key 9 of 10 is connected with each other, and it is defeated that the other end of stop key 9 connects live wire Enter end 2；The normally opened contact J12 of described lifting key 10 and relay J 1 is connected in parallel；Described decline key 11 and relay J 2 normal Open contact J22 to be connected in parallel；The movable contact J13 of described relay J 1, the movable contact J23 of relay J 2 are all connected with zero line input 3；One end of one end auxiliary connection winding 15 of the main winding 14 of described alternating current generator 1 also connects live wire input 2；Described main winding The other end, the other end of auxiliary winding 15 and the capacitor 7 of 14 are in parallel；One end of described capacitor 7 connects the normally opened of relay J 2 Contact J24；The other end of described capacitor 7 connects the normally opened contact J14 of relay J 1；One end of described first parallel winding 5 Being connected with each other with live wire end, the live wire end of relay J 2 coil of relay J 1 coil, the other end connects zero line input 3；Institute State the second parallel winding 6 and be parallel with time relay KT, the first normally-closed contact KT1 with time relay KT of the second parallel winding 6 After series connection in parallel with the coil 16 of time relay KT and the first parallel winding 5 again.

During work, such as rolling screen door to be opened, then press lifting key 10, coil 12 energized action of relay J 1, normally opened tactile Point J12, J14 Guan Bi, normally-closed contact J11 disconnect, KT1 is normally closed in time relay contact, the first parallel connection of brake electric magnetic coil around Group 5 and second parallel winding 6 all electric, produce bigger electromagnetic force, make brake block overcome the thrust of spring to separate with brake disc； Alternating current generator 1 also electric rotating forward starts, after alternating current generator 1 starts, time relay normally-closed contact KT1 is through prolonging after a while Disconnect time after, the second parallel winding 6 power-off, only provided electromagnetic force by the first parallel winding 1, continue to brake block and brake disc Released state；Because normally-closed contact J11 disconnects, even if now pressing decline key 11, the coil 13 of relay J 2 can not obtain electric, Relay J 2 will not occur misoperation；After pressing stop key 9, coil 12 dead electricity of relay J 1, contact J12, J14 often recover Opening, contact J11 recovers normally closed, and alternating current generator 1 dead electricity shuts down, brake electric magnetic coil dead electricity, and brake block pushing and withstanding is stopped by spring Hull, brakes to door roller.In like manner, during rolling screen door to be closed, after pressing decline key 11, relay J 2 energized action, stop Hull separates with brake block, and alternating current generator 1 inverts, and rolling screen door declines, equally, even if now pressing lifting key 10, and relay J 1 Coil also 12 can not obtain electric, relay J 1 will not occur misoperation.When external cable is struck by lightning, input voltage is beyond pressure During quick resistance RV1 threshold value, varistor RV1 turns on rapidly, by voltage clamp to threshold range, enters door roller control circuit Row protection；For further door roller control circuit being carried out more effective lightning protection, also by varistor RV2, varistor No matter RV3 and gas-discharge tube GDT ground connection, so, be live wire or zero line is hit by thunder and lightning, can discharge the most rapidly, will Voltage clamp is in threshold range.

Described varistor RV1, RV2, RV3 all select 20D561K.

Described gas-discharge tube GDT selects B8G600L.

Described first parallel winding 5 is also associated with rectifier bridge stack 17, and one end of the input of this rectifier bridge stack 17 connects continues The live wire end of electrical equipment J1 coil 12 and the live wire end of relay J 2 coil 13, the other end connects zero line input 3, and outfan connects The two ends of the first parallel winding 5.Alternating current inputs the first parallel winding after becoming unidirectional current by rectifier bridge stack 17 all wave rectification again 5, vibrations and the eddy current of the first parallel winding 5 iron core can be eliminated, the electromagnetic force making the first parallel winding 5 is more stable.

Circuit also includes the first travel switch 18 and the second travel switch 19；Described first travel switch 18 and relay The coil 12 of J1 is connected；The coil 13 of described second travel switch 19 and relay J 2 is connected.First travel switch and is set Two travel switches are used for making rolling screen door be raised or lowered to predetermined stop position and are automatically stopped.

The above, detailed description of the invention the most of the present utility model, but protection domain of the present utility model does not limit to In this, any change expected without creative work or replacement, all should contain within protection domain of the present utility model. Therefore, protection domain of the present utility model should be as the criterion with the protection domain that claims are limited.

Claims (7)

1. the exchange door roller control circuit of band lightning protection function, including input, alternating current generator, controller and brake electromagnetism Coil；Described input includes live wire input, zero line input and ground wire input, and described live wire input connects civil power Live wire, zero line input connects the zero line of civil power, ground wire input end grounding；It is characterized in that: described live wire input and zero line Connect between input and have varistor RV1；It is also associated with between described live wire input and zero line input being serially connected Varistor RV2 and varistor RV3；Between connection end and the ground wire input of described varistor RV2 and varistor RV3 Connect and have gas-discharge tube GDT；Described brake electric magnetic coil is provided with the first parallel winding and the second parallel winding；Described controller It is provided with relay J 1, relay J 2, capacitor and control button；Described control button is provided with stop key, lifting key and decline key； The normally-closed contact J21 of one end of described lifting key and the coil of relay J 1, relay J 2 is connected in series；The one of described decline key End and the coil of relay J 2, the normally-closed contact J11 of relay J 1 are connected in series；The other end of described lifting key, decline key One end of the other end and stop key is connected with each other, and the other end of stop key connects live wire input；Described lifting key and relay The normally opened contact J12 of J1 is connected in parallel；The normally opened contact J22 of described decline key and relay J 2 is connected in parallel；Described relay The movable contact J13 of J1, the movable contact J23 of relay J 2 are all connected with zero line input；One end of the main winding of described alternating current generator One end of auxiliary connection winding also connects live wire input；The other end of described main winding, the other end of auxiliary winding and capacitor are also Connection；One end of described capacitor connects the normally opened contact J24 of relay J 2；The other end of described capacitor connects relay J 1 Normally opened contact J14；One end of described first parallel winding and the live wire end of relay J 1 coil, the live wire end of relay J 2 coil Being connected with each other, the other end connects zero line input；Described second parallel winding is parallel with time relay KT, the second parallel winding First and time relay KT normally-closed contact KT1 is in parallel with the coil of time relay KT and the first parallel winding again after connecting.

The exchange door roller control circuit of band lightning protection function the most according to claim 1, it is characterised in that: described pressure Quick resistance RV1 is 20D561K.

The exchange door roller control circuit of band lightning protection function the most according to claim 1, it is characterised in that: described pressure Quick resistance RV2 is 20D561K.

The exchange door roller control circuit of band lightning protection function the most according to claim 1, it is characterised in that: described pressure Quick resistance RV3 is 20D561K.

The exchange door roller control circuit of band lightning protection function the most according to claim 1, it is characterised in that: described gas Body discharge tube GDT is B8G600L.

The exchange door roller control circuit of band lightning protection function the most according to claim 1, it is characterised in that: described One parallel winding connects rectifier bridge stack, and one end of the input of this rectifier bridge stack connects the live wire end of relay J 1 coil and continues The live wire end of electrical equipment J2 coil, the other end connects zero line input, and outfan connects the two ends of the first parallel winding.

The exchange door roller control circuit of band lightning protection function the most according to claim 1, it is characterised in that: also include First travel switch and the second travel switch；Described first travel switch and the coils connected in series of relay J 1；Described second stroke Switch and the coils connected in series of relay J 2.