CN211816574U - Electric control system of excavator - Google Patents
Electric control system of excavator Download PDFInfo
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- CN211816574U CN211816574U CN202020140418.3U CN202020140418U CN211816574U CN 211816574 U CN211816574 U CN 211816574U CN 202020140418 U CN202020140418 U CN 202020140418U CN 211816574 U CN211816574 U CN 211816574U
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Abstract
The utility model mainly discloses an excavator electrical system, including the battery feed end, the battery feed end is connected with motor converter through first control circuit, is connected with second control circuit on the first control circuit, is connected with third control circuit on the second control circuit, is connected with fourth control circuit on the third control circuit. The utility model discloses with the repacking of diesel engine power supply system for battery power supply system, provide motor electric power through the battery, and then give hydraulic pump power to control circuit's electric power is provided.
Description
Technical Field
The utility model relates to an excavator circuit technical field, especially an excavator electrical system.
Background
In the prior art, the excavator generally adopts a diesel engine to provide power for a hydraulic pump and provide power for an excavator control circuit, and the power and power working mode has high dependence on diesel oil which is a non-renewable resource and has high environmental pollution.
SUMMERY OF THE UTILITY MODEL
The utility model provides a not enough to prior art exists, the utility model provides an excavator electrical system is the battery power supply system with the repacking of diesel engine power supply system, provides motor electric power through the battery, and then gives hydraulic pump power to provide control circuit's electric power.
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: an electric control system of an excavator comprises a battery power supply end, wherein the battery power supply end is connected with a motor frequency converter through a first control circuit, the first control circuit is connected with a second control circuit, the second control circuit is connected with a third control circuit, and the third control circuit is connected with a fourth control circuit.
The utility model discloses further set up to: the battery power supply end is also connected with a current collector, and the motor frequency converter is connected with the motor.
The utility model discloses further set up to: the first control circuit comprises a 400A residual current circuit breaker QA1 and a reactor L1 which are sequentially connected with a battery power supply end, and the reactor L1 is connected with a motor frequency converter.
The utility model discloses further set up to: a plurality of parallel indicator lamps are connected between the battery power supply end and the 400A electric leakage breaker QA1, and a multifunctional power meter watt and a continuous protection relay XJ1 are connected between the 400A electric leakage breaker QA1 and the reactor L1.
The utility model discloses further set up to: the second control circuit comprises a connecting terminal block DZ02, the input end of the connecting terminal DZ02 is connected with the first control circuit through a first branch circuit, a second branch circuit and a third branch circuit respectively, and the output end of the connecting terminal block DZ02 is connected with a plurality of fans connected in parallel through a circuit breaker QA 9.
The utility model discloses further set up to: the first branch circuit comprises a breaker QA2, a contactor KM1 and an overheating relay FR1 which are sequentially connected, the breaker QA2 is connected between a 400A residual current breaker QA1 and a reactor L1, and the overheating relay FR1 is connected with a connecting terminal row DZ 02; and a contactor KM2 and an overheating relay FR2 are sequentially connected between the breaker QA2 and the wiring terminal row DZ 02.
The utility model discloses further set up to: the second branch circuit comprises a breaker QA3 and a transformer BYQ which are connected in sequence, the breaker QA3 is connected between a 400A residual current breaker QA1 and a reactor L1, and the transformer BYQ is connected with a connecting terminal row DZ 02; the third branch comprises a breaker QA4, one end of the breaker QA4 is connected between a 400A residual current breaker QA1 and a reactor L1, and the other end of the breaker QA4 is connected with a terminal bank DZ 02.
The utility model discloses further set up to: the output end of the connecting terminal row DZ02 is also sequentially connected with a contactor KM3 and a breaker QA5, and the other end of the breaker QA5 is connected between the connecting terminal row DZ02 and the breaker QA 9.
The utility model discloses further set up to: the third control circuit comprises a breaker QA6, a power converter DY, a breaker QA7 and a connecting terminal row DZ03 which are connected in sequence, and the input end of the breaker QA6 is connected between the connecting terminal row DZ02 and the breaker QA 9.
The utility model discloses further set up to: the fourth control circuit comprises a breaker QA8, a wiring terminal row DZ01 and a miniature intermediate relay circuit which are sequentially connected, wherein the miniature intermediate relay circuit is connected with an overheating relay FR and a contactor KM, the other end of the miniature intermediate relay circuit is connected between the breaker QA6 and a power converter DY, and the other end of the breaker QA8 is connected between the power converter DY and the breaker QA 7. The micro intermediate relay circuit comprises a plurality of micro intermediate relays connected in parallel.
The utility model discloses it does to have beneficial effect: the utility model provides an excavator electrical system is transformed into battery power supply system with diesel engine power supply system, forms new circuit structure, provides motor electric power through the battery, and then transmits for hydraulic pump power to provide excavator control circuit's electric power, provide power through the battery and control, but battery cycle charge, long service life, greatly reduced cost, and the use of electric power reduces environmental pollution, has energy-concerving and environment-protective effect.
Drawings
Fig. 1 is a schematic diagram of the circuit structure of the present invention;
FIG. 2 is a schematic diagram of a first control circuit;
FIG. 3 is a schematic diagram of the second control circuit and the third control circuit;
fig. 4 is a schematic structural diagram of a fourth control circuit.
Detailed Description
The preferred embodiments of the present invention will be further described in detail with reference to the accompanying drawings.
As shown in fig. 1, an electric control system for an excavator includes a battery power supply end, the battery power supply end is connected with a motor frequency converter through a first control circuit, the first control circuit is connected with a second control circuit, the second control circuit is connected with a third control circuit, and the third control circuit is connected with a fourth control circuit.
The battery power supply end is also connected with a current collector, and the motor frequency converter is connected with the motor.
As shown in fig. 2, the first control circuit includes a 400A residual current circuit breaker QA1 and a reactor L1, which are connected to the battery power supply terminal in this order, and the reactor L1 is connected to the motor inverter.
A plurality of parallel indicator lamps are connected between the battery power supply end and the 400A electric leakage breaker QA1, and a multifunctional power meter watt and a continuous protection relay XJ1 are connected between the 400A electric leakage breaker QA1 and the reactor L1.
As shown in fig. 3, the second control circuit includes a connection terminal block DZ02, an input terminal of the connection terminal DZ02 is connected to the first control circuit via a first branch, a second branch and a third branch, respectively, and an output terminal of the connection terminal block DZ02 is connected to a plurality of fans connected in parallel via a circuit breaker QA 9.
The first branch circuit comprises a breaker QA2, a contactor KM1 and an overheating relay FR1 which are sequentially connected, the breaker QA2 is connected between a 400A residual current breaker QA1 and a reactor L1, and the overheating relay FR1 is connected with a connecting terminal row DZ 02; and a contactor KM2 and an overheating relay FR2 are sequentially connected between the breaker QA2 and the wiring terminal row DZ 02.
The second branch circuit comprises a breaker QA3 and a transformer BYQ which are connected in sequence, the breaker QA3 is connected between a 400A residual current breaker QA1 and a reactor L1, and the transformer BYQ is connected with a connecting terminal row DZ 02; the third branch comprises a breaker QA4, one end of the breaker QA4 is connected between a 400A residual current breaker QA1 and a reactor L1, and the other end of the breaker QA4 is connected with a terminal bank DZ 02.
The output end of the connecting terminal row DZ02 is also sequentially connected with a contactor KM3 and a breaker QA5, and the other end of the breaker QA5 is connected between the connecting terminal row DZ02 and the breaker QA 9.
The third control circuit comprises a breaker QA6, a power converter DY, a breaker QA7 and a connecting terminal row DZ03 which are connected in sequence, and the input end of the breaker QA6 is connected between the connecting terminal row DZ02 and the breaker QA 9.
As shown in fig. 4, the fourth control circuit includes a breaker QA8, a terminal row DZ01, and a micro relay circuit, which are connected in sequence, the micro relay circuit is connected with an overheat relay FR and a contactor KM, the other end of the micro relay circuit is connected between a breaker QA6 and a power converter DY, and the other end of the breaker QA8 is connected between the power converter DY and a breaker QA 7. The micro intermediate relay circuit comprises a plurality of micro intermediate relays connected in parallel.
The working principle is as follows: the battery power supply end adopts a 380V power supply, the collector and the motor frequency converter are powered by the first control circuit, the motor frequency converter is connected with the motor, the motor is further powered and then transmitted to the hydraulic pump, meanwhile, the motor frequency converter is connected with the first control circuit and the second control circuit, the second control circuit is connected with the third control circuit, the third control circuit is connected with the fourth control circuit, so that the battery power supply end also supplies power to other control circuits, and the normal work of the excavator is realized.
The above embodiments are only used for explaining the inventive concept of the present invention, and not for limiting the protection of the claims of the present invention, and all the insubstantial modifications of the present invention made by using the above inventive concept shall fall within the protection scope of the present invention.
Claims (10)
1. An excavator electric control system is characterized in that: the motor frequency converter comprises a battery power supply end, wherein the battery power supply end is connected with a motor frequency converter through a first control circuit, the first control circuit is connected with a second control circuit, the second control circuit is connected with a third control circuit, and the third control circuit is connected with a fourth control circuit.
2. The electric control system of the excavator according to claim 1, wherein: the battery power supply end is also connected with a current collector, and the motor frequency converter is connected with the motor.
3. The electric control system of the excavator according to claim 1, wherein: the first control circuit comprises a 400A residual current circuit breaker QA1 and a reactor L1 which are sequentially connected with a battery power supply end, and the reactor L1 is connected with a motor frequency converter.
4. The electric control system of the excavator according to claim 3, wherein: a plurality of parallel indicator lamps are connected between the battery power supply end and the 400A electric leakage breaker QA1, and a multifunctional power meter watt and a continuous protection relay XJ1 are connected between the 400A electric leakage breaker QA1 and the reactor L1.
5. The electric control system of the excavator according to claim 3, wherein: the second control circuit comprises a connecting terminal block DZ02, the input end of the connecting terminal DZ02 is connected with the first control circuit through a first branch circuit, a second branch circuit and a third branch circuit respectively, and the output end of the connecting terminal block DZ02 is connected with a plurality of fans connected in parallel through a circuit breaker QA 9.
6. The electric control system of the excavator according to claim 5, wherein: the first branch circuit comprises a breaker QA2, a contactor KM1 and an overheating relay FR1 which are sequentially connected, the breaker QA2 is connected between a 400A residual current breaker QA1 and a reactor L1, and the overheating relay FR1 is connected with a connecting terminal row DZ 02; and a contactor KM2 and an overheating relay FR2 are sequentially connected between the breaker QA2 and the wiring terminal row DZ 02.
7. The electric control system of the excavator according to claim 5, wherein: the second branch circuit comprises a breaker QA3 and a transformer BYQ which are connected in sequence, the breaker QA3 is connected between a 400A residual current breaker QA1 and a reactor L1, and the transformer BYQ is connected with a connecting terminal row DZ 02; the third branch comprises a breaker QA4, one end of the breaker QA4 is connected between a 400A residual current breaker QA1 and a reactor L1, and the other end of the breaker QA4 is connected with a terminal bank DZ 02.
8. The electric control system of the excavator according to claim 5, wherein: the output end of the connecting terminal row DZ02 is also sequentially connected with a contactor KM3 and a breaker QA5, and the other end of the breaker QA5 is connected between the connecting terminal row DZ02 and the breaker QA 9.
9. The electric control system of the excavator according to claim 5, wherein: the third control circuit comprises a breaker QA6, a power converter DY, a breaker QA7 and a connecting terminal row DZ03 which are connected in sequence, and the input end of the breaker QA6 is connected between the connecting terminal row DZ02 and the breaker QA 9.
10. The electrical control system of an excavator according to claim 9, wherein: the fourth control circuit comprises a breaker QA8, a wiring terminal row DZ01 and a miniature intermediate relay circuit which are sequentially connected, wherein the miniature intermediate relay circuit is connected with an overheating relay FR and a contactor KM, the other end of the miniature intermediate relay circuit is connected between the breaker QA6 and a power converter DY, and the other end of the breaker QA8 is connected between the power converter DY and the breaker QA 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020140418.3U CN211816574U (en) | 2020-01-21 | 2020-01-21 | Electric control system of excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020140418.3U CN211816574U (en) | 2020-01-21 | 2020-01-21 | Electric control system of excavator |
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| CN211816574U true CN211816574U (en) | 2020-10-30 |
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| CN202020140418.3U Active CN211816574U (en) | 2020-01-21 | 2020-01-21 | Electric control system of excavator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111424755A (en) * | 2020-01-21 | 2020-07-17 | 杭州亦鹏实业发展有限公司 | Electric control system of excavator |
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- 2020-01-21 CN CN202020140418.3U patent/CN211816574U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111424755A (en) * | 2020-01-21 | 2020-07-17 | 杭州亦鹏实业发展有限公司 | Electric control system of excavator |
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