CN201656425U - Controlling device for inhibiting engineering mechanical surge voltage - Google Patents
Controlling device for inhibiting engineering mechanical surge voltage Download PDFInfo
- Publication number
- CN201656425U CN201656425U CN2010201713840U CN201020171384U CN201656425U CN 201656425 U CN201656425 U CN 201656425U CN 2010201713840 U CN2010201713840 U CN 2010201713840U CN 201020171384 U CN201020171384 U CN 201020171384U CN 201656425 U CN201656425 U CN 201656425U
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- China
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- power supply
- terminal
- relay
- supply relay
- key switch
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- Control Of Eletrric Generators (AREA)
Abstract
The utility model discloses a controlling device for inhibiting the engineering mechanical surge voltage, the controlling device comprises an AC generator and an accumulator, a terminal of the AC generator is connected with a terminal of the power supply relay contact, another terminal of the power supply relay contact is connected with the positive pole of the accumulator, one end of the power supply relay control coil is connected to the ground, the other end is connected to the positive pole of the accumulator via the key switch, which is in parallel connection with the contact of the unloading relay, one end of the control coil of the unloading relay is connected to the ground, while the other end is connected to the signal terminal of the AC generator, the key switch is in serial connection with fuse, the other terminal of AC generator and the negative pole of the accumulator are connected to the ground, at two ends of the power supply relay contact respectively provided a vehicle-used power supply terminal, which is capable of inhibiting the generation of the surge voltage, thereby protecting electrical elements in the electrical system, and improving the reliability and endurance of electrical elements in the overall electrical system.
Description
Technical field
The utility model relates to a kind of control device that is used for preventing the surge voltage of the electric system of engineering machinery.
Background technology
At present; in the electric system of engineering machinery; when the operation key switch; when cutting off car load power-off engine by power supply relay; engine also is rotated further owing to inertia force; so that alternating current generator continues generating; because the electric current that sends can't flow into storage battery, the surge voltage in the circuit raises, to the voltage that can impact of the electric elements in the electrical system of complete machine; electric elements such as nonshared control unit particularly; supply voltage there is certain requirement, generally can't bears this bigger voltge surge, usually can cause the fault of these electric elements; influence its normal operation, thereby make the complete machine can't operate as normal.
Summary of the invention
In order to overcome the defective that the surge voltage rising of the electric system of known engineering machinery causes the electric elements fault; the utility model provides a kind of control device that prevents the engineering machinery surge voltage; this control device can anti-surge voltage generation, thereby the electric elements in the protection electrical system.
The technical solution of the utility model is: this control device comprises alternating current generator, storage battery, fuse, key switch, power supply relay, electric elements such as unloading relay, terminal of alternating current generator links to each other with a terminal of power supply relay contact, another terminal of power supply relay contact connects battery positive voltage, power supply relay control coil one end ground connection, the power supply relay control coil other end connects battery positive voltage by key switch, key switch is parallel with the contact of unloading relay, unloading relay control coil one end ground connection, another termination alternating current generator signal terminal of unloading relay control coil, key switch is in series with fuse, another terminal of alternating current generator and the minus earth of storage battery, the two ends of power supply relay contact are respectively equipped with the power supply on vehicle terminal.
Advantage of the present utility model: generation that can anti-surge voltage, thereby the electric elements in the protection electrical system, improve the reliability and the durability of complete machine electrical system electric elements.
Be described further below in conjunction with drawings and Examples.
Description of drawings
Accompanying drawing is the structural representation of an embodiment of the present utility model.
1. power supply relays among the figure, 2. unloading relay, 3. fuse, 4. key switch, 5. power supply on vehicle terminal, 6. storage battery, 7. alternating current generator, 8. power supply on vehicle terminal.
Embodiment
In the accompanying drawings, 7 one terminal B of alternating current generator link to each other with the terminal 87 of power supply relay 1 contact, and the terminal 30 of power supply relay 1 contact connects storage battery 6 positive poles.Power supply relay 1 control coil one end ground connection, the power supply relay 1 control coil other end connects storage battery 6 positive poles by key switch 4.Key switch 4 is parallel with the contact of unloading relay 2, unloading relay 2 control coils one end 85 ground connection, and the unloading relay 2 control coil other ends 86 meet alternating current generator 7 signal terminal L.Key switch 4 is in series with fuse 3.Another terminal E of alternating current generator 7 and the minus earth of storage battery 6.The two ends of power supply relay 1 contact are respectively equipped with power supply on vehicle terminal 5,8, and power supply on vehicle terminal 5 is not subjected to the control of key switch 4.When operate as normal, when operation key switch 4 is in power position, the B of key switch 4 end is communicated with the ACC end, and it is electric that the end pin 86 by power supply relay 1 control coil and the electric loop of end pin 85 formations get, thereby power supply relay 1 tip side pin 30 is communicated with holding pin 87.Behind the ato unit, the electric current that alternating current generator 7 terminal B send is communicated with end pin 87 by the tip side pin 30 of power supply relay 1, provides power supply to car load on the one hand, and unnecessary electric current can flow into storage battery 6 simultaneously, accumulators 6 chargings; Alternating current generator 7 generatings, the terminal L signal (high level) of alternating current generator 7 are connected to unloading relay 2 field circuits---and the end pin 86 and end pin 85 electric loops of unloading relay 2 get.Unload relay 2 control coils this moment and get electricly, the closing of contact of unloading relay 2---the tip side pin 30 of unloading relay 2 is communicated with holding pin 87, and it is electric that power supply relay 1 field circuit is got, complete machine power supply operate as normal.
When operation key switch 4 is in off-position, when cutting off car load power-off engine by power supply relay 1, engine is because inertia force is rotated further, alternating current generator 7 continues generating, alternating current generator 7 signal terminal L (high level) are connected to unloading relay 2 field circuits---and the control coil end pin 86 and end pin 85 electric loops of unloading relay 2 get, the unloading relay 2 the closing of contact---the unloading relay 2 tip side pin 30 with end pin 87 be communicated with, also can make power supply relay 1 control coil continue electricly, the tip side pin 30 of power supply relay 1 with end pin 87 be communicated with.So; even key switch 4 is in off-position; the electric current that alternating current generator 7 terminal B send can flow into storage battery 6; stop operating until engine, alternating current generator 7 generation outages, thus unloading relay 2 control coils must not; power supply relay 1 control coil can not get; the complete machine dump, thus the generation of outage moment surge voltage prevented, played the effect of protection.
In the foregoing description, unloading relay 2 can be controlled by nonshared control unit.Alternating current generator 7 signal terminal L are connected in the nonshared control unit; reach whether carry out car load engine misses and power cut-off operation by nonshared control unit according to its signal voltage size; then control unloads relay 2; make it get electric or must not electricity, thereby make unloading circuit cooperate corresponding actions to realize that surge voltage prevents defencive function.
Claims (1)
1. control device that prevents the engineering machinery surge voltage, this control device comprises alternating current generator and storage battery, it is characterized in that: terminal of alternating current generator links to each other with a terminal of power supply relay contact, another terminal of power supply relay contact connects battery positive voltage, power supply relay control coil one end ground connection, the power supply relay control coil other end connects battery positive voltage by key switch, key switch is parallel with the contact of unloading relay, unloading relay control coil one end ground connection, another termination alternating current generator signal terminal of unloading relay control coil, key switch is in series with fuse, another terminal of alternating current generator and the minus earth of storage battery, the two ends of power supply relay contact are respectively equipped with the power supply on vehicle terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201713840U CN201656425U (en) | 2010-04-16 | 2010-04-16 | Controlling device for inhibiting engineering mechanical surge voltage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201713840U CN201656425U (en) | 2010-04-16 | 2010-04-16 | Controlling device for inhibiting engineering mechanical surge voltage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201656425U true CN201656425U (en) | 2010-11-24 |
Family
ID=43121663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201713840U Expired - Lifetime CN201656425U (en) | 2010-04-16 | 2010-04-16 | Controlling device for inhibiting engineering mechanical surge voltage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201656425U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104753416A (en) * | 2015-04-03 | 2015-07-01 | 国机重工（常州）挖掘机有限公司 | Voltage stabilizing circuit used for power generator |
| CN109435877A (en) * | 2018-12-17 | 2019-03-08 | 安徽安凯汽车股份有限公司 | A kind of electric motor coach bears the control system of mechanical total power switch failure with prevention and control |
-
2010
- 2010-04-16 CN CN2010201713840U patent/CN201656425U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104753416A (en) * | 2015-04-03 | 2015-07-01 | 国机重工（常州）挖掘机有限公司 | Voltage stabilizing circuit used for power generator |
| CN109435877A (en) * | 2018-12-17 | 2019-03-08 | 安徽安凯汽车股份有限公司 | A kind of electric motor coach bears the control system of mechanical total power switch failure with prevention and control |
| CN109435877B (en) * | 2018-12-17 | 2023-12-15 | 安徽安凯汽车股份有限公司 | Control system for preventing and controlling failure of negative mechanical type main power switch for electric passenger car |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101124 |
|
| CX01 | Expiry of patent term |