CN102433902B - Electric hydraulic excvavtor - Google Patents
Electric hydraulic excvavtor Download PDFInfo
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- CN102433902B CN102433902B CN 201110442961 CN201110442961A CN102433902B CN 102433902 B CN102433902 B CN 102433902B CN 201110442961 CN201110442961 CN 201110442961 CN 201110442961 A CN201110442961 A CN 201110442961A CN 102433902 B CN102433902 B CN 102433902B
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- 230000001105 regulatory effect Effects 0.000 claims abstract description 6
- 238000004891 communication Methods 0.000 claims abstract description 5
- 238000006243 chemical reaction Methods 0.000 claims description 17
- 239000003638 chemical reducing agent Substances 0.000 claims description 6
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 6
- 150000002910 rare earth metals Chemical group 0.000 claims description 6
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000010521 absorption reaction Methods 0.000 abstract 1
- 238000005265 energy consumption Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 13
- 239000003921 oil Substances 0.000 description 5
- 239000000295 fuel oil Substances 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 239000002283 diesel fuel Substances 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Abstract
The invention discloses a hydraulic excvavtor of which the power source is power grid electric energy. The hydraulic excvavtor comprises a controller, a main motor frequency converter, a main motor, a first pressure transmitter, a second pressure transmitter, a pilot pump, a first variable pump, a second variable pump, a first power regulator, a second power regulator, an electromagnetic proportional valve, a rotation reduction box, a rotation motor and a rotation frequency converter. In the hydraulic excvavtor, motor power is all from a 380V power grid; the controller and the frequency converter carry out data communication; and according to load fluctuation, the motor is subjected to variable frequency speed control, and the electromagnetic proportional valve is controlled to regulate the absorption power of the variable pump to achieve the optimal power matching; the controller and the rotation motor frequency converter carry out data communication; and the rotation motor is subjected to the variable frequency speed control. According to the hydraulic excvavtor, the problem of incapability of regulating the rotating speed of the traditional hydraulic excvavtor is solved, power is reasonably matched, meanwhile, the rotation device is driven by electric power; the problem of large energy consumption brought by adopting hydraulic rotation can be solved; and the purposes of more energy saving, low noise and environmental friendliness can be achieved.
Description
Technical field
The present invention relates to a kind of electric power hydraulic crawler excavator, being specifically related to a kind of power source is the electrical network electric energy, and can realize the hydraulic crawler excavator of the Proper Match of power.
Background technology
For a long time, the excavator of each producer all provides power source take engine combustion diesel oil as excavator work, and the traditional power mode of this kind is not only expensive, and the pollution of environment also be can not be ignored.Along with International Crude Oil rises steadily, the running cost of excavator constantly increases; Simultaneously, the concept of low-carbon environment-friendly has more and more become the new concept of product design.Although the domestic product that electric excavator is arranged, it is dual-purpose to have plenty of electronic and diesel oil, and what have plenty of employing is constant speed motor, pattern is single, and operating rate is unadjustable, can't carry out the power adjustment, simultaneously revolution drives and still adopts fluid motor-driven, does not have thoroughly to solve the problem of hydraulic pressure coupling.
Application number is 200710118549.0 Chinese patent application, a kind of fuel oil and electric dual-purpose digging machine is disclosed, comprise vehicle frame, vehicle frame is provided with panoramic table, panoramic table is provided with ac motor, additional one group of hydraulic pump that drives with ac motor in hydraulic system, be used alternatingly by fuel oil, electronic two kinds of type of drive, but corresponding, its complicated structure, used equally fuel oil in the middle of use procedure, and the switching of two kinds of type of drive can only be to start another after a kind of stop using, operation is corresponding complexity also.
Application number is the Chinese patent application of 201110108547.X, discloses a kind of electrical control system of electric excavator, and it is constant speed motor, and operating rate is unadjustable, can't carry out the power adjustment.
In addition, many use oil electric mixed dynamic systems in the prior art, but oily electric mixed tensor utilization rate is low, still is not so good as electric excavator in its utilization rate of the area of electric energy abundance.
Summary of the invention
The present invention seeks to solve for a long time excavator work to the dependence of fuel oil, and control the Proper Match of realizing motor and variable pump power by power, reduce running cost, also reduce the consumption of electric energy simultaneously, is a kind of more energy-conservation, the excavator of environmental protection.
To achieve these goals, the present invention has adopted following technical scheme: a kind of electric power hydraulic crawler excavator, comprise control system, described control system is comprised of controller, main motor frequency conversion device, main motor, the first pressure transmitter, the second pressure transmitter, pioneer pump, the first variable pump, the second variable pump, the first power governor, the second power governor, electromagnetic proportional valve, rotary reducer, turning motor and revolution frequency converter;
Wherein main motor frequency conversion device and revolution frequency converter are controlled by controller, main motor by the control of main motor frequency conversion device and turning motor by the revolution Frequency Converter Control; Described pioneer pump is communicated with by main driven by motor and with the first variable pump and the second variable pump; The first power governor and the second power governor are connected in parallel, and wherein an end of the first power governor connects the oil-out of the first variable pump, and an end of the second power governor connects the oil-out of the second variable pump; The first power governor all is electrically connected with controller by electromagnetic proportional valve with the other end of the second power governor; Described the first variable pump is communicated with the first pressure transmitter, and is electrically connected with controller by the first pressure transmitter, and described the second variable pump is communicated with the second pressure transmitter, and is electrically connected with controller by the second pressure transmitter;
Described main motor frequency conversion device and turning motor frequency converter are high-performance open loop frequency converter, are the devices that motor is carried out frequency control, it by with the controller communication, motor is carried out variable frequency regulating speed control.
Described main motor is rare earth permanent-magnet synchronization motor, and its effect is to adopt 380V high-voltage fence electric energy, drives the main pump rotation under the control of frequency converter, for hydraulic system provides power.
Described turning motor is rare earth permanent-magnet synchronization motor, and its effect is to adopt 380V high-voltage fence electric energy, drives rotary motor, for digger revolving provides power.
Described the first variable pump and the second variable pump are plunger type duplex swash plate variable pump.
The invention has the beneficial effects as follows:
1. in the present invention, pattern according to controller is set, main motor frequency conversion device can carry out frequency control to motor in order to control motor speed within the specific limits automatically according to the size of main motor load, and adjusts electromagnetic proportional valve by controller power is adjusted.Finally reach the Proper Match between main motor speed and the variable pump pump oil mass, have simple to operate, high, the low characteristics of power consumption of main motor current utilization rate.
2. electric power hydraulic crawler excavator of the present invention utilizes electrical network electric energy (380V) to provide power source for excavator work; Be compared to diesel, more energy-conserving and environment-protective.
Description of drawings
Fig. 1 is the overall structure schematic diagram of excavator of the present invention:
Fig. 2 is the structural representation of control system of the present invention.
1. electric power hydraulic crawler excavators, 2. control systems, 3. controllers among the figure; 4. main motor frequency conversion device; 5. main motor; 6. the first pressure transmitter; 7. the second pressure transmitter; 8. pioneer pump; 9. the second variable pump; 10. the second power governor; 11. the first variable pump; 12. electromagnetic proportional valve; 13. the first power governor; 14. rotary reducer; 15 turning motors; 16. revolution frequency converter
The specific embodiment
Whole system of the present invention comprises transfer of data and sampling and processing system, by surveillance and composition of the control system, control system gathers the car load operational factor and working condition and warning message is carried out record, and surveillance realizes the demonstration to controller data.
With reference to Fig. 1 and Fig. 2, electric hydraulic excavating machine control system 2 of the present invention is comprised of controller 3, main motor frequency conversion device 4, main motor 5, the first pressure transmitter 6, the second pressure transmitter 7, pioneer pump 8, the first plunger type duplex swash plate variable pump 11, the second plunger type duplex swash plate variable pump 9, the first power governor 13, the second power governor 10, electromagnetic proportional valve 12, rotary reducer 14, turning motor 15, revolution frequency converter 16.
Wherein surveillance is monitor, and monitor is fixed by screws on the driver's cabin upper cover, and monitor is realized the demonstration to controller data.Controller is fixed by screws on the bottom plate of driving cab, main motor frequency conversion device 4 be bolted on excavator 1 added on, main motor 5 is bolted on excavator 1 added, and the first pressure transmitter 6 and the second pressure transmitter 7, the first plunger type duplex swash plate variable pump 11 and the second plunger type duplex swash plate variable pump 9, the first power governor 13 and the second power governor 10 and electromagnetic proportional valve 11 are installed on the pioneer pump 8; Pioneer pump 8 is connected on the main motor 5 by shaft coupling, and turning motor 15 is connected on the rotary reducer 14 by key, and added upper, the revolution frequency converter 16 that is bolted on excavator 1 after connecting is bolted on excavator 1 added.
The effect of controller 3 is that the signal that the first pressure transmitter 6 and the second pressure transmitter 7 and main motor frequency conversion device 4, revolution frequency converter 15 gather is compared and judges, then send control instruction by 4 pairs of main motors 5 of main motor frequency conversion device, revolution frequency converter 15 pairs of turning motors 14 with electromagnetic proportional valve 11, thereby realize the rotating speed of main motor 5 and the Proper Match of pioneer pump 8 pump oil masses, reach the purpose that improves power utilization; The effect of main motor frequency conversion device 4 is after receiving control instruction main motor 5 to be carried out frequency control, to reach the purpose of power match; Main motor 5 is connected with pioneer pump 8 by shaft coupling, and its effect is to provide power by the outside electric power network electric energy for hydraulic system; The first pressure transmitter 6 and the second pressure transmitter 7 are installed on the pioneer pump 8, and its effect is the oil pressure that gathers pioneer pump, and pass to controller 3 after changing this pressure signal into the signal of telecommunication; The effect of pioneer pump 8 is the mobile power that provides for hydraulic system hydraulic oil, the first power governor 13 and the second power governor 10 are installed on the pioneer pump 8, its effect is to regulate the fuel delivery of pioneer pump 8 according to the pressure signal of electromagnetic proportional valve 12 outputs, thereby reaches the purpose of power adjusting; The first variable pump 11 and the second variable pump 9 are installed on the pioneer pump 8, and its effect is the flow of control pioneer pump 8 hydraulic oil; The effect of turning motor 15 is the power supplys that receive outside electric power network 380V by conducting slip ring, for digger revolving provides power, the effect of revolution frequency converter 16 is to receive the controller instruction and turning motor 15 is carried out variable frequency regulating speed control, carries out variable frequency regulating speed control by the revolution of 14 pairs of excavators 1 of rotary reducer.
Main motor is rare earth permanent-magnet synchronization motor, and its effect is to adopt 380V high-voltage fence electric energy, drives the main pump rotation under the control of frequency converter, for hydraulic system provides power.Turning motor is rare earth permanent-magnet synchronization motor, and its effect is to adopt 380V high-voltage fence electric energy, drives rotary motor, for digger revolving provides power.Main motor frequency conversion device and turning motor frequency converter are high-performance open loop frequency converter, are the devices that motor is carried out frequency control, it by with the controller communication, motor is carried out variable frequency regulating speed control.The first variable pump and the second variable pump are conventional plunger type duplex swash plate variable pump.
Electric power hydraulic crawler excavator of the present invention, can set according to the pattern of controller, main motor frequency conversion device can be according to the size of main motor load, automatically motor is carried out frequency control in order to control motor speed within the specific limits, and adjust electromagnetic proportional valve by controller power is adjusted.Finally reach the Proper Match between main motor speed and the variable pump pump oil mass, have simple to operate, high, the low characteristics of power consumption of main motor current utilization rate.
Electric power hydraulic crawler excavator of the present invention utilizes electrical network electric energy (380V) to provide power source for excavator work; Be compared to diesel, more energy-conserving and environment-protective.
Although above-mentionedly by reference to the accompanying drawings the specific embodiment of the present invention is described; but be not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various modifications that creative work can make or distortion still in protection scope of the present invention.
Claims (5)
1. electric power hydraulic crawler excavator, comprise control system and surveillance, described control system is comprised of controller, main motor frequency conversion device, main motor, the first pressure transmitter, the second pressure transmitter, pioneer pump, the first variable pump, the second variable pump, the first power governor, the second power governor, electromagnetic proportional valve, rotary reducer, turning motor and revolution frequency converter;
It is characterized in that described main motor frequency conversion device and revolution frequency converter are controlled by controller, main motor by the control of main motor frequency conversion device and turning motor by the revolution Frequency Converter Control; Described pioneer pump is communicated with by main driven by motor and with the first variable pump and the second variable pump; The first power governor and the second power governor are connected in parallel, and wherein an end of the first power governor connects the oil-out of the first variable pump, and an end of the second power governor connects the oil-out of the second variable pump; The first power governor all is electrically connected with controller by electromagnetic proportional valve with the other end of the second power governor; Described the first variable pump is communicated with the first pressure transmitter, and is electrically connected with controller by the first pressure transmitter, and described the second variable pump is communicated with the second pressure transmitter, and is electrically connected with controller by the second pressure transmitter; Described surveillance is monitor.
2. electric power hydraulic crawler excavator according to claim 1 is characterized in that, described main motor frequency conversion device and turning motor frequency converter are the open loop frequency converter, its by with the controller communication, motor is carried out variable frequency regulating speed control.
3. electric power hydraulic crawler excavator according to claim 1 and 2 is characterized in that, described main motor is rare earth permanent-magnet synchronization motor, and it adopts 380V high-voltage fence electric energy, drives the main pump rotation under the control of frequency converter, for hydraulic system provides power.
4. electric power hydraulic crawler excavator according to claim 1 and 2 is characterized in that, described turning motor is rare earth permanent-magnet synchronization motor, and it adopts 380V high-voltage fence electric energy, drives rotary motor, for digger revolving provides power.
5. electric power hydraulic crawler excavator according to claim 1 and 2 is characterized in that, described the first variable pump and the second variable pump are plunger type duplex swash plate variable pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110442961 CN102433902B (en) | 2011-12-27 | 2011-12-27 | Electric hydraulic excvavtor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110442961 CN102433902B (en) | 2011-12-27 | 2011-12-27 | Electric hydraulic excvavtor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102433902A CN102433902A (en) | 2012-05-02 |
| CN102433902B true CN102433902B (en) | 2013-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110442961 Active CN102433902B (en) | 2011-12-27 | 2011-12-27 | Electric hydraulic excvavtor |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103510564A (en) * | 2012-06-26 | 2014-01-15 | 山重建机有限公司 | Device for controlling constant power of excavator |
| CN106480926B (en) * | 2016-09-19 | 2018-10-26 | 湖南德力重工有限公司 | A kind of electric hydraulic excavating machine |
| CN111945803A (en) * | 2020-08-25 | 2020-11-17 | 中国铁建重工集团股份有限公司 | Shovel loader |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1786486A (en) * | 2004-12-07 | 2006-06-14 | 沃尔沃建造设备控股（瑞典）有限公司 | Hydraulic control circuit and method thereof |
| CN202450561U (en) * | 2011-12-27 | 2012-09-26 | 山重建机有限公司 | Electric hydraulic excavator |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3016004B2 (en) * | 1995-10-23 | 2000-03-06 | 内田油圧機器工業株式会社 | Work machine interference prevention control circuit device |
| JPH10252703A (en) * | 1997-03-12 | 1998-09-22 | Komatsu Ltd | Travel control device for construction machine |
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2011
- 2011-12-27 CN CN 201110442961 patent/CN102433902B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1786486A (en) * | 2004-12-07 | 2006-06-14 | 沃尔沃建造设备控股（瑞典）有限公司 | Hydraulic control circuit and method thereof |
| CN202450561U (en) * | 2011-12-27 | 2012-09-26 | 山重建机有限公司 | Electric hydraulic excavator |
Non-Patent Citations (2)
| Title |
|---|
| JP特开平10-252703A 1998.09.22 |
| JP特开平9-111799A 1997.04.28 |
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| CN102433902A (en) | 2012-05-02 |
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| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Xia Yuwu Inventor after: Li Baoxia Inventor after: Pang Jianguang Inventor after: Sun Ying Inventor after: Ni Lin Inventor after: You Yingang Inventor after: Zhang Yi Inventor after: Zhu Chengdong Inventor after: Gu Qingdong Inventor after: Ren Yongchun Inventor before: Ni Lin Inventor before: Pang Jianguang Inventor before: You Yingang Inventor before: Zhu Chengdong Inventor before: Gu Qingdong Inventor before: Ren Yongchun Inventor before: Wang Keche Inventor before: Li Baoxia |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: NI LIN PANG JIANGUANG YOU YINGANG ZHU CHENGDONG GU QINGDONG REN YONGCHUN WANG KECHE LI BAOXIA TO: XIA YUWU PANG JIANGUANG SUN YING NI LIN YOU YINGANG ZHANG YI ZHU CHENGDONG GU QINGDONG REN YONGCHUN LI BAOXIA |
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Effective date of registration: 20161123 Granted publication date: 20131030 |
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Date of cancellation: 20180523 Granted publication date: 20131030 |