CN2207957Y - Constant voltage light for agricultural automotive vehicle - Google Patents

Abstract

The utility model relates to a constant voltage light for an agricultural automotive vehicle, which belongs to the field of vehicle lighting or signaling devices. The constant voltage light mainly comprises an alternating current power supply, a rectifying circuit, a voltage multiplying rectification part, control circuits 1 and 2, and a concatenation voltage stabilizing part, wherein, the alternating current power supply is connected with the rectifying circuit and the voltage multiplying rectification part, and the control circuit 1 is connected with the voltage multiplying rectification part. The voltage multiplying rectification part is connected with the control circuit 2 and the concatenation voltage stabilizing part, and the control circuit 2 is connected with the concatenation voltage stabilizing part. The concatenation voltage stabilizing part is connected with the load. The utility model has the advantages of reasonable circuit design, simple structure, stable operation, good heat dissipation, easy installation and low price.

Description

Constant voltage light for agricultural automotive vehicle

A kind of Agricultural automotive vehicle constant-luminance device belongs to car lighting or signalling apparatus, refers in particular to the constant-luminance device of Agricultural automotive vehicle.

At present, most of Agricultural automotive vehicle does not use the light stabilizing device, has caused difficulty to driver's driving.Particularly bad in road conditions, the speed of a motor vehicle is forced to reduce, and when needing most light, light is dim on the contrary.And too high because of generator output voltage when running at high speed, bulb very easily burns out.Traffic safety and personal safety have been had a strong impact on.

At this problem, also developed the electronics package of stable agri-vehicle light at present, but the employing special bulb that these devices have, by the voltage of hand switch or operatorless device supply special bulb 6V and 12V; The employing silicon-controlled conversion and the generator special that have are supporting; The employing rectifying device that has is equipped with storage battery; The change electrical generator line bag number of turn that has is to improve generator output voltage; The electronics package that passes through that has changes the dynamo armature electric current; What have only is applicable to dynamo generator; 6V of the employing that has and a 12V bulb are changed by hand switch; The employing motor special that has reaches agricultural motor vehicle light and stablizes this purpose.

Though these devices have solved unstable this problem of agricultural motor vehicle light basically.Problems such as but it is not strong also to exist applicability, uses inconvenience, and quality does not pass a test, the life-span is short, cost is high, impracticable.

Unstable this problem of light when travelling in order to solve Agricultural automotive vehicle, the purpose of this utility model are to develop a kind of the boosting of any 12V alternator output voltage, automobile-used constant-luminance device of voltage stabilizing electronics package-agricultural motor of being applicable to.Thereby solved unstable this thorny problem of Agricultural automotive vehicle light.

Principal feature of the present utility model is: described constant-luminance device comprises parts such as source of AC, rectifying circuit, voltage multiplying rectifier, control circuit 1, control circuit 2, series connection voltage stabilizing; Described source of AC connects rectifying circuit and voltage multiplying rectifier part, and control circuit 1 connects the voltage multiplying rectifier part, described voltage multiplying rectifier part connection control circuit 2 and series connection voltage stabilizing part, and described control circuit 2 connects series connection voltage stabilizing part, and described series connection voltage stabilizing partly connects load.Described voltage multiplying rectifier partly comprises D1, D2, C1, C2, C3, C4.Described series connection voltage stabilizing partly comprises Q1, Q2, Q3, R4, C6, R7, DW1 and R8.Described control circuit 1 comprises D3, R1, R2, C5 and relay J 1; Described control circuit 2 comprises R5, R3 and relay J 2.

Further narrate the utility model below in conjunction with accompanying drawing in the mode of embodiment.

Wherein: Fig. 1 is a functional-block diagram of the present utility model.

Fig. 2 is schematic circuit diagram of the present utility model.

Wherein, Fig. 1 draws a few major part of the present utility model in a capsule.Fig. 2 has drawn a most preferred embodiment of the present utility model.Its detailed annexation is:

The positive pole of the positive pole of D1 diode and diode D3, the negative pole of diode D2 link to each other with motor one phase line by K switch after connecting together again.

The collecting electrode of the normally closed contact of coil one end of the positive pole of the positive pole of the negative pole of diode D1 and chemical capacitor C1, C3, chemical capacitor C5, R1 resistance, relay J 2, R4 resistance, R6 resistance, relay J 2, open contact, adjustment pipe Q1, the collecting electrode of amplifier tube Q2 link together.

The negative pole of the negative pole of the positive pole of diode D2 and chemical capacitor C2, C4, R3 resistance, chemical capacitor C6, the positive pole of zener diode DW1, resistance R 9 link together.

After connecting together, the coil of the normally closed contact of the negative pole of chemical capacitor C1, the positive pole of C2, relay J 1, the negative pole of chemical capacitor C5, relay J 1, the open contact of relay J 1 be connected with a phase line of electrical generator.

The normally closed contact of the negative pole of chemical capacitor C3, the positive pole of C4, relay J 1 links together.

The positive pole of the negative pole of diode D3 and chemical capacitor C5, R1 resistance connect together.

Relay J 1 coil is connected with resistance R 1, R2.

Resistance R 2 is connected with the open contact of relay J 1.

Resistance R 5 is connected with the open contact of relay J 2, and the other end of R5 is connected with the other end of the coil of R3 resistance, relay J 2.

The emitter of sampling line Q3 is connected with the negative pole of stabilivolt DW1, and collecting electrode is connected with positive pole, the base stage of Q2 amplifier tube, the resistance R 4 of chemical capacitor C6, and the Q3 base stage links to each other with the center tap of potential device W1.

The emitter of amplifier tube Q2 is connected with the positive pole of diode D4, and collecting electrode is connected with the collecting electrode that resistance R 6, Q1 adjust pipe.

The base stage that Q1 adjusts pipe is connected with the negative pole of diode D4, and the normally closed contact other end of emitter and relay J 2, the R6 resistance other end, R7 resistance, R8 resistance, load one end link together.

The negative pole of the emitter of Q3 and stabilivolt DW1, the R7 resistance other end connect together.

Two fixed ends of potential device W1 are connected with the end of resistance R 9, R8 respectively.

The electronic circuit of the constant-luminance device that we develop mainly is made up of voltage doubling rectifying circuit, serial regulating circuit and control circuit.This device mainly is applicable to the agricultural motor four-wheeled tractor, the preceding lamp dimming device of agricultural motor tricycle, and this installs required power supply and can directly be provided by the 12V alternating current generator.

Voltage doubling rectifying circuit is made up of D1, D2, C1, C2, C3, C4.When exchanging the positive half cycle of input, D1 is in positive bias, and D2 is in reverse bias, by D1 C1, C3 is charged to peak voltage.When exchanging the input negative half period, D1 is in reverse bias, and D2 is in positive bias, by D2 C2, C4 is charged to peak voltage.C1 and C2, C3 and C4 store the electric charge addition, and output voltage is approximately the twice of the peak voltage of input, and output voltage is constantly by back level discharge.

Form serial regulating circuit by Q1, Q2, Q3, R4, C6, R7, DW1 and R8 etc.Wherein Q1 is for adjusting pipe, and Q3 is a sampling line, and Q2 is an amplifier tube, and DW1 is a zener diode, and W1 is a sampling potentiometer, and R4 is the collector load resistor of Q3 pipe, forms active filter circuit with C6 again simultaneously.D4 is the insulation blocking diode, and it has the reinforcement ability for the current collection of Q1 adjustment pipe on the one hand, and it also has the reinforcement ability for the emitter-base diode of Q2 on the other hand, and D4 has protective effect for the collector base junction of Q1, the emission of Q2.R6 is high-performance cement resistor, and when alternator output voltage was high, it rose and shares the load-carrying capacity that Q1 adjusts pipe.

If electrical generator send voltage when low, the alternating current that electrical generator sends is also low through the voltage multiplying rectifier output voltage, makes the voltage of exporting to load low more, at this moment the base tension of sampling line Q3 also reduces, because the pressure stabilization function of zener diode DW1, the sampling line emitter-base diode is anti-to be changed partially, makes Ib3 _▲→ IC3 _▲→ UC3 ^▲→ Ib2 ^▲→ IC3 ^▲→ Ib1 ^▲→ RCe ^▲The tube voltage drop of Q1 reduces, thereby output voltage is raise.

Equally when the output voltage of electrical generator is high, make Ib3 ^▲→ IC3 ^▲→ UC3 _▲→ Ib2 _▲→ IC3 _▲→ Ib1 _▲→ RCe ^▲The tube voltage drop of Q1 increases, thereby output voltage is reduced.

D3, R1, R2, C5 relay J 1 are formed control circuit.D3 is the rectification diode of control circuit, and C5 is the filter capacitor of control circuit, and R1 shares relay J 1 coil both end voltage, prevents that the relay coil both end voltage is too high and life-span of reducing relay.R2 is the open contact of protective relay J1 on the one hand, prevents that the excessive contact that makes of electric current of the open contact by relay J 1 is bonding.Can guarantee also that on the other hand relay can discharge reliably, prevent relay J 1 continuous action, the normally closed contact of relay J 1 is C1, the negative pole of C3 connects together, C2, the positive pole of C4 connects together, like this, when the alternating current voltage that sends when alternating current generator is low, alternating current passes through D1, D2, C1, C2, C3, export behind the booster tension behind the C4 voltage multiplying rectifier, when the alternating current voltage that sends when alternating current generator is high, relay J 1 action adhesive normally closed contact is opened, C3, C4 excises voltage doubling rectifying circuit, makes former cause D1, D2, C1, C2, C3, C4 becomes D1, D2, C1, the output of C2 voltage multiplying rectifier.

Relay J 2, resistance R 5, R3 form another control circuit, and this control circuit is when the output voltage of alternating current generator is on the low side, and relay J 2 is failure to actuate, and is in release position, the normally closed contact closure of J2.The alternating current that alternating current generator sends is through voltage doubling rectifying circuit, by the direct supply load of the normally closed contact of relay J 2.At this moment; serial regulating circuit is inoperative; when the output voltage of alternating current generator is elevated to 7.5V; relay J 2 action adhesives; the normally closed contact of J2 is opened; serial regulating circuit works, and resistance R 5 is not bonded and continuous actions when preventing that relay J 2 from discharging for the open contact of protective relay J2.Resistance R 3 is in order to prevent that relay J 2 coil both end voltage are too high and burn relay J 2.

Travel daytime or after bulb burns, generally K switch will be opened, electrical generator stops constant-luminance device being powered.This is significant to the life-span that prolongs constant-luminance device.

The constant-luminance device of our factory development, shell is made by the punching press of 1mm iron sheet.Enough intensity and good thermal diffusivity are arranged.By repeatedly design, the experiment of getting on the bus repeatedly, checking have filtered out reliable reasonably electronic circuit.Reasonable price, easy for installation, the bigger value that popularizes is arranged.

Claims (5)

1, a kind of Agricultural automotive vehicle constant-luminance device, it is characterized in that: described constant-luminance device comprises source of AC, rectifying circuit, voltage multiplying rectifier, control circuit 1, control circuit 2, series connection voltage stabilizing, described source of AC connects rectifying circuit and voltage multiplying rectifier part, control circuit 1 connects the voltage multiplying rectifier part, described voltage multiplying rectifier part connection control circuit 2 and series connection voltage stabilizing part, described control circuit 2 connects series connection voltage stabilizing part, and described series connection voltage stabilizing partly connects load.

2, constant-luminance device according to claim 1 is characterized in that: described voltage multiplying rectifier partly comprises D1, D2, C1, C2, C3, C4.

3, constant-luminance device according to claim 1 is characterized in that: described series connection voltage stabilizing partly comprises Q1, Q2, Q3, R4, C6, R7, DW1, R8.

4, constant-luminance device according to claim 1 is characterized in that: described control circuit 1 comprises D3, R1, R2, C5 and relay J 1, and described control circuit 2 comprises R5, R3 and relay J 2.

5, constant-luminance device according to claim 1 is characterized in that: the positive pole of the positive pole of D1 diode and diode D3, the negative pole of diode D2 connect together, and link to each other with motor one phase line by switch; The collecting electrode of the collecting electrode amplifier tube Q2 of the normally closed contact of coil one end of the positive pole of the positive pole of the negative pole of diode D1 and chemical capacitor C1, C3, chemical capacitor C5, R1 resistance, relay J 2, R4 resistance, R6 resistance, relay J 2, open contact, adjustment pipe Q1 links together; The negative pole of the negative pole of the positive pole of diode D2 and chemical capacitor C2, C4, R3 resistance, chemical capacitor C6, the positive pole of zener diode DW1, resistance R 9 link together; After connecting together, the coil of the normally closed contact of the negative pole of chemical capacitor C1, the positive pole of C2, relay J 1, the negative pole of chemical capacitor C5, relay J 1, the open contact of relay J 1 be connected with a phase line of electrical generator; The normally closed contact of the negative pole of chemical capacitor C3, the positive pole of C4, relay J 1 links together; The positive pole of the negative pole of diode D3 and chemical capacitor C5, R1 resistance connect together; Relay J 1 coil is connected with resistance R 1, R2; Resistance R 2 links to each other with the open contact of relay J 1; Resistance R 5 is connected with the open contact of relay J 2, and the other end of R5 is connected with the coil other end of R3 resistance, relay J 2; The emitter of sampling line Q3 is connected with the negative pole of stabilivolt DW1, and collecting electrode is connected with positive pole, the base stage of Q2 amplifier tube, the resistance R 4 of chemical capacitor C6, and the base stage of Q3 links to each other with the center tap of potential device W1; The emitter of amplifier tube Q2 is connected with the positive pole of diode D4, and collecting electrode is adjusted pipe collector with resistance R 6, Q1 and is connected; The base stage of the adjustment pipe of Q1 is connected with the negative pole of diode D4, and the normally closed contact other end of emitter and relay J 2, the R6 resistance other end, R7 resistance, R8 resistance, load one end link together; The negative pole of the emitter of Q3 and stabilivolt DW1, the R7 resistance other end connect together; Two fixed ends of potential device W1 are connected with the end of resistance R 9, R8 respectively.