CN204066208U - A kind of motor cable anti-theft device - Google Patents
A kind of motor cable anti-theft device Download PDFInfo
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- CN204066208U CN204066208U CN201420363289.9U CN201420363289U CN204066208U CN 204066208 U CN204066208 U CN 204066208U CN 201420363289 U CN201420363289 U CN 201420363289U CN 204066208 U CN204066208 U CN 204066208U
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Abstract
The utility model discloses a kind of motor cable anti-theft device, be suitable for being connected with motor, described motor comprises three-phase circuit, comprise detection module, control modular converter and alarm module, described detection module comprises neon bulb, photoresistance RG and resistance R2, the two ends of described resistance R2 are connected with a wherein circuitry phase of described motor, and the other end is connected with described neon bulb and ground connection, and described photoresistance RG is arranged in the light emitting region of described neon bulb; Described control modular converter comprises photoelectric switching circuit and relay K V, and described photoresistance RG is connected with described photoelectric switching circuit, and photoelectric switching circuit is connected with the trigger winding of relay K V; Described alarm module comprises warning power supply, the normal open switch of relay K V, locking switch and alarm element, and described warning power supply, the normal open switch of described relay K V, described locking switch and described alarm element are connected into loop.
Description
Technical field
The utility model relates to a kind of anti-theft device of motor cable.
Background technology
Present all kinds of product line uses motor very general as the situation of driving arrangement, it is large that motor has power bracket; Use and control very convenient, abilities such as having automatic starting, acceleration, braking, reverse, pull, can meet various service requirement; Work efficiency is higher, does not have again flue dust, smell, free from environmental pollution, and noise is also less; The features such as reliable, cheap, sound construction.But the stolen situation of motor cable is also comparatively general, and under majority occurs in the uncharged situation of motor cable, operating personnel are also difficult to the very first time and find, serious hinder tissue to produce carrying out smoothly.
Existing most motor cable theft preventing method is mainly dependence personnel and patrols and examines, and the arrival rate of patrolling and examining can affect anti-theft effect, and this method real-time is lower, drops into also larger, and personnel's management and control difficulty is large, and enterprises using the labor cost is also higher.Another kind of motor cable theft preventing method uses antitheft cable when producing line and building, have signal wire in antitheft cable, utilize signal wire to make a set of motor cable anti-theft alarm, when cable is stolen, signal wire is sheared disconnected, thus send warning, but this method can only be confined to newly-built product line.If be used in product line that is built, that come into operation, need input, manpower huge, therefore this method is difficult on product line that is built, that come into operation.Also have a class motor cable theft preventing method to be increase metallic sheath outside cable, the workload that such method implements is also very large.
To sum up, the major defect of existing cable anti-theft measure has: dependence personnel patrol and examine, and drops into huge; Region is wide, and personnel's cyclic in-position measuring rate is low, can not accomplish uninterrupted protection; Personnel amount is many, and on-the-spot complicated, personal security management and control difficulty is large; Transformation difficulty is large, and have limitation, cost is high.
Given this, find one and be applicable to build, come into operation and produced on line, safe and reliable, maintain easily, the motor cable that maintenance cost is low is antitheft, to solve this difficult problem.
Utility model content
In view of the shortcoming of above-mentioned prior art, the purpose of this utility model is to provide a kind of safe and reliable, maintains easily, the motor cable anti-theft device that maintenance cost is low.
The utility model provides a kind of motor cable anti-theft device, be suitable for being connected with motor, described motor comprises three-phase circuit, it is characterized in that: comprise detection module, control modular converter and alarm module, described detection module comprises neon bulb, photoresistance RG and resistance R2, the two ends of described resistance R2 are connected with a wherein circuitry phase of described motor, and the other end is connected with described neon bulb and ground connection, and described photoresistance RG is arranged in the light emitting region of described neon bulb; Described control modular converter comprises photoelectric switching circuit and relay K V, and described photoresistance RG is connected with described photoelectric switching circuit, and photoelectric switching circuit is connected with the trigger winding of relay K V; Described alarm module comprises warning power supply, the normal open switch of relay K V, locking switch and alarm element, and described warning power supply, the normal open switch of described relay K V, described locking switch and described alarm element are connected into loop.
As preferably, photoelectric switching circuit comprises conversion electric power, resistance R11, triode VT1 and triode VT2, wherein, described conversion electric power and described photoresistance RG, described resistance R11 connects and forms loop, setting between described photoresistance RG and described resistance R11 is the second potential point, the other end of described photoresistance RG is the first potential point, the described resistance RI1 other end is the 3rd potential point, described second potential point connects the base stage of described triode VT1, the emitting stage of described triode VT1 connects described 3rd potential point, the collector of the described triode VT1 described resistance R22 that connects connects the first potential point, the collector of described triode VT1 connects the base stage of described triode VT2, the collector of described triode VT2 connects the first current potential, the connect trigger winding of described relay K V of the emitter of described triode VT2 connects the 3rd potential point.The conducting when photoresistance RG is subject to illumination, the base stage no-voltage VT1 of VT1 is cut-off state, and VT2 is also cut-off state, and relay K V normal open switch does not close.When unglazed photograph, RG not conducting, VT1 base stage has voltage turn-on, and VT2 base stage obtains electric VT2 conducting, and relay coil obtains electric adhesive, and relay K V normal open switch closes, warning circuit conducting.
As preferably, described detection module also comprises fuse FU and resistance R1, and described fuse FU and described resistance R1 is connected in parallel on the motor relay K switch M of the arbitrary circuit of the other two-phase of motor after connecting.No matter motor is triangle or star-like connection, and all in a loop, pass into voltage toward arbitrary circuitry phase, other Earth Phases also have voltage to ABC three-phase.So neon bulb and resistance R2, fuse FU and resistance R1, the quarter-phase circuit of appointing being connected to three-phase electricity forms loop, all can realize the technical program.This programme solves an antitheft difficult problem when motor cable is not charged, fuse FU and resistance R1 short circuit motor relay K switch M, forms loop, voltage by neon bulb, again through 1.8M Ω resistance R2 over the ground, produce the electric current of 0.096mA, make neon bulb luminous.This weak current is all safe for human body and equipment.
As preferably, described alarm element comprises pilot lamp and hummer, and described pilot lamp and described hummer are connected on the point of fixity of the normal open switch of described relay K V respectively, forms parallel circuit and is connected on warning power supply.Other alert methods can be adopted herein.
As preferably, described fuse FU electric current is less than or equal to 30mA.Safety current through human body is 30mA, then can not form potential safety hazard to people and equipment.
As preferably, described resistance R2 is 1.8M Ω.Because the technical program is applicable to voltage at 380V and following motor, R2 is that 1.8M Ω can ensure that neon bulb is when motor relay K switch M opening and closing two states, luminous normal, and photoresistance RG is normally worked.
As preferably, described resistance R1 is 50K Ω ~ 1.8M Ω.Resistance R1 adopts the resistance being less than 50K Ω, and the electric current through overcurrent fuse can be caused excessive, forms potential safety hazard.Resistance R1 is greater than the 1.8M Ω of resistance R2, and the luminous voltage of neon bulb can be caused to reduce, and bright intensity reduces, and affects the normal use of photoresistance RG.
According to above-mentioned, for forming the technical scheme of the present embodiment, only needing the line short circuit with the fast molten protective tube of serial connection and resistance R1 on arbitrary circuitry phase of motor, one of other any two-phases are drawn out to detection module with wire.The resistance R2 of neon bulb and 1.8M Ω is connected in series by the making of detection module, and is fixed in the light emitting region of neon bulb by photoresistance RG, photoresistance RG and neon tube is combined and is arranged in closed enclosure.And then the other end of detection module is connected with ground terminal.Photoresistance RG is accessed conversion and control plate, utilizes the open state that the height conversion of the resistance of photoresistance is formed, a road access pilot lamp loop, access hummer loop, another road.Conversion and control plate, pilot lamp, hummer all need external power supply, and power supply is determined according to selecting the specification of part.Corresponding pilot lamp is installed on a control plane, as the abnormal instruction of certain road cable, alarm lamp is sealed in corresponding control loop, whole alerting signal is incorporated to alarm bell, realize accurately reporting warning message.Under control pilot lamp, switch is installed, in order to close report to the police instruction and alarm.
As mentioned above, a kind of motor cable anti-theft device of the present utility model, has following beneficial effect:
1. make simple, cost is low, can install enforcement in existing motor cable.
2. can effective monitoring cable when motor does not operate, once cable is destroyed, the warning horn very first time gives the alarm.
3. accurately can quote the device name of destroyed cable, be convenient to personnel's handling failure.
4. use, safeguard simple, convenience, to user of service without special competency profiling.
5. this apparatus module, miniaturization, takes up room little.
Accompanying drawing explanation
The theory diagram of motor cable anti-theft device of Fig. 1 for providing in embodiment of the present utility model.
The system diagram of the anti-theft device of the motor cable in the embodiment that Fig. 2 provides for the utility model.
Control modular converter in the anti-theft device of the motor cable in the embodiment that Fig. 3 provides for the utility model.
Sound light alarming circuit figure in the anti-theft device of the motor cable in the embodiment that Fig. 4 provides for the utility model.
Embodiment
Below by way of specific instantiation, embodiment of the present utility model is described, those skilled in the art the content disclosed by this instructions can understand other advantages of the present utility model and effect easily.The utility model can also be implemented or be applied by embodiments different in addition, and the every details in this instructions also can based on different viewpoints and application, carries out various modification or change not deviating under spirit of the present utility model.
1 is known with reference to the accompanying drawings, and the utility model utilizes Electrooptical-optoelectrical transfer principle to design a kind of brand-new motor cable anti-theft device, and solves the antitheft difficult problem when motor cable is not charged further.This device is applicable to below 380V cable system.The utility model is made up of detection module, control modular converter, alarm module.Control block diagram is transferred to conversion and control then output alarm instruction by detection signal.
2 is known with reference to the accompanying drawings, and detection module comprises neon bulb and photoresistance RG, a wherein circuitry phase of motor, and as C circuitry phase connects the resistance R2 and neon bulb ground connection connected, photoresistance RG is arranged in the light emitting region of neon bulb; The series circuit of motor relay K switch M two ends fuse FU and resistance R1 in parallel, on the A phase that the series circuit of fuse FU and resistance R1 is connected in parallel on motor or B circuitry phase.
The photoelectric switching circuit that photoresistance RG connects, photoelectric switching circuit is connected with the trigger winding of relay K V.The normal open switch of relay K V and output voltage, connect locking switch and warning circuit are connected, and warning circuit are pilot lamp HL in parallel and hummer HA, see accompanying drawing 4.
With reference to the accompanying drawings 3, control the execution module that modular converter is device, comprise changing voltage 5V, changing voltage tandem photosensitive resistance RG and resistance R11, be the second potential point between setting photoresistance RG and resistance R11, the other end of photoresistance RG is the first potential point, the resistance R1I other end is the 3rd potential point, the base stage of the second potential point connecting triode VT1, the emitting stage of triode VT1 connects the 3rd potential point, the collector series resistance R22 of triode VT1 connects the first potential point, the base stage of the collector connecting triode VT2 of triode VT1, the collector of triode VT2 connects the first current potential, the trigger winding of the emitter series relay KV of triode VT2 connects the 3rd potential point.
The conducting when photoresistance RG is subject to illumination, the base stage no-voltage VT1 of VT1 is cut-off state, and VT2 is also cut-off state, normally closed CB and COM conducting.When unglazed according to time, RG not conducting, VT1 base stage has voltage turn-on, and VT2 base stage obtains electric VT2 conducting, and relay coil K obtains electric adhesive, normal battle CK1CK2 and COM conducting.
With reference to the accompanying drawings 2,3,4, no matter motor is triangle or star-like connection, and all in a loop, pass into voltage toward arbitrary circuitry phase, other Earth Phases also have voltage to ABC three-phase.So pass into voltage in A circuitry phase, C circuitry phase also has voltage, and voltage is incorporated into detection module, and neon tube is shinny, represent that this cable switch cabinet is in normal condition to the cable of motor.Under normal powered state, if neon bulb is without light, show antitheft cable open circuit, cable has stolen possibility.Photoelectric conversion module, rises if photoresistance can't detect bright resistance, and by trigger relay coil motion, adhesive of often making war, the 24V power supply of alarm circuit will be supplied to pilot lamp and hummer produces sound and light alarm.
Electrooptical-optoelectrical transfer principle is utilized to design a kind of brand-new motor cable anti-theft device, when motor is charged, by the dividing potential drop of resistance R2, make to make neon bulb luminous by the weak current of neon bulb, the illumination resistance being subject to neon bulb due to photoresistance descends rapidly general who has surrendered to make place minor loop conducting, relay K V does not work, and alarm circuit disconnects.As motor circuit is destroyed, neon bulb dead electricity does not work, and photoresistance resistance increases, the relay K V trigger winding action in power conversion circuit, relay K V normal open switch is closed, warning circuit conducting.Pilot lamp HL lights, and has hummer HA to send warning simultaneously.Cable monitoring panel, can be arranged on electric panel room, when the alarm of operation room is sounded, operating personnel check to the control panel of electric panel room.Close abnormal cable alarm switch, and confirm whether cable is stolen to on-the-spot.If when circuit occurs abnormal, locking switch can be disconnected, increase the security of circuit.
Duty one: QF closes, motor cable burglary-resisting system starts, R1, R2, electric motor resistance, neon bulb is had in testing circuit, motor internal resistance is very little, can ignore, loop current is faint, about 0.054mA ~ 0.094mA, weak current makes the heat that the motor feels hot produces less thus, can not produce harmful effect to motor.Under this kind of state, on-the-spot any place of motor cable is cut, neon bulb all can dead electricity not luminous, signal conversion module and alarm module sequentially-operating, alarm lamp and hummer give the alarm.If resistance R1 is short-circuited, motor cable generation earth fault, electric current is excessive, and more than FU tolerance range, FU fuses, and prevents from causing higher level's switch trip.
Duty two: QF closes, and KM closes, and have R2, neon bulb in testing circuit, neon bulb obtains electric, and alarm can not misoperation, and have no effect to motor main circuit, motor normally works.
If there is multiple electric motors cable to do anti-theft device, detection module makes separately, and alarm lamp can be concentrated and be produced on a display panel, shares a hummer.
The manufacturing process of the present embodiment device
1, detection module makes
First Switching Power Supply is cut off, by the drawer switch contactor A phase fast line short circuit melting protective tube and resistance R1 of serial connection, switch cubicle output terminal C phase wire is drawn out to detection module.The resistance R2 of neon bulb and 1.8M Ω is connected in series by the making of detection module, and is fixed in the light emitting region of neon bulb by photoresistance RG, photoresistance RG and neon tube is combined and is arranged in closed enclosure.And then detection module one end is connected with C phase output terminal extension line, the other end is connected with ground terminal.
2, conversion and control module
Photoresistance is accessed conversion and control plate, utilize the open state that the height conversion of the resistance of photoresistance is formed, a road access pilot lamp loop, access hummer loop, another road.Conversion and control plate, pilot lamp, hummer all need external power supply.
3, alarm module
Corresponding pilot lamp is installed on a control plane, as the abnormal instruction of certain road cable, alarm lamp is sealed in corresponding control loop, whole alerting signal is incorporated to alarm bell, realize accurately reporting warning message.Under control pilot lamp, switch is installed, in order to close report to the police instruction and alarm.
Above-described embodiment is illustrative principle of the present utility model and effect thereof only, but not for limiting the utility model.Any person skilled in the art scholar all without prejudice under spirit of the present utility model and category, can modify above-described embodiment or changes.Therefore, such as have in art and usually know that the knowledgeable modifies or changes not departing from all equivalences completed under the spirit and technological thought that the utility model discloses, must be contained by claim of the present utility model.
Claims (7)
1. a motor cable anti-theft device, be suitable for being connected with motor, described motor comprises three-phase circuit, it is characterized in that: comprise detection module, control modular converter and alarm module, described detection module comprises neon bulb, photoresistance RG and resistance R2, the two ends of described resistance R2 are connected with a wherein circuitry phase of described motor, and the other end is connected with described neon bulb and ground connection, and described photoresistance RG is arranged in the light emitting region of described neon bulb;
Described control modular converter comprises photoelectric switching circuit and relay K V, and described photoresistance RG is connected with described photoelectric switching circuit, and photoelectric switching circuit is connected with the trigger winding of relay K V;
Described alarm module comprises warning power supply, the normal open switch of relay K V, locking switch and alarm element, and the normal open switch of described warning power supply, described relay K V, described locking switch and described alarm element are connected into loop.
2. a kind of motor cable anti-theft device according to claim 1, is characterized in that: photoelectric switching circuit comprises conversion electric power, resistance R11, triode VT1 and triode VT2, wherein, described conversion electric power and described photoresistance RG, described resistance R11 connects and forms loop, setting between described photoresistance RG and described resistance R11 is the second potential point, the other end of described photoresistance RG is the first potential point, the described resistance RI1 other end is the 3rd potential point, described second potential point connects the base stage of described triode VT1, the emitting stage of described triode VT1 connects described 3rd potential point, the collector of the described triode VT1 described resistance R22 that connects connects the first potential point, the collector of described triode VT1 connects the base stage of described triode VT2, the collector of described triode VT2 connects the first current potential, the connect trigger winding of described relay K V of the emitter of described triode VT2 connects the 3rd potential point.
3. a kind of motor cable anti-theft device according to claim 1, it is characterized in that: described detection module also comprises fuse FU and resistance R1, described fuse FU and described resistance R1 is connected in parallel on the motor relay K switch M of the arbitrary circuit of the other two-phase of described motor after connecting.
4. a kind of motor cable anti-theft device according to claim 1, it is characterized in that: described alarm element comprises pilot lamp and hummer, described pilot lamp and described hummer are connected on the point of fixity of the normal open switch of described relay K V respectively, form parallel circuit and are connected on warning power supply.
5. a kind of motor cable anti-theft device according to claim 3, is characterized in that: described fuse FU electric current is less than or equal to 30mA.
6. a kind of motor cable anti-theft device according to claim 1, is characterized in that: described resistance R2 is 1.8M Ω.
7. a kind of motor cable anti-theft device according to claim 2, is characterized in that: described resistance R1 is 50K Ω ~ 1.8M Ω.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420363289.9U CN204066208U (en) | 2014-07-02 | 2014-07-02 | A kind of motor cable anti-theft device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420363289.9U CN204066208U (en) | 2014-07-02 | 2014-07-02 | A kind of motor cable anti-theft device |
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| CN204066208U true CN204066208U (en) | 2014-12-31 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113109739A (en) * | 2021-04-02 | 2021-07-13 | 重庆凯瑞传动技术有限公司 | Slip ring detection device and detection method for rail transit |
-
2014
- 2014-07-02 CN CN201420363289.9U patent/CN204066208U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113109739A (en) * | 2021-04-02 | 2021-07-13 | 重庆凯瑞传动技术有限公司 | Slip ring detection device and detection method for rail transit |
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