CN101924478A - Power supply method of mobile type hoisting equipment and system thereof - Google Patents
Power supply method of mobile type hoisting equipment and system thereof Download PDFInfo
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- CN101924478A CN101924478A CN2009100531160A CN200910053116A CN101924478A CN 101924478 A CN101924478 A CN 101924478A CN 2009100531160 A CN2009100531160 A CN 2009100531160A CN 200910053116 A CN200910053116 A CN 200910053116A CN 101924478 A CN101924478 A CN 101924478A
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Abstract
The invention provides a power supply method of mobile type hoisting equipment and a system thereof. Diesel generator set is taken as electric energy supply source, so as to provide low power electric energy for the system, and an energy storage unit is taken as an overall electric energy supply system, the way that energy is accumulated by time is adopted, short time high power energy is supplied to high power operating mechanism such as hoisting mechanism and the like, and the power of the diesel generator set is obviously reduced. By adopting the technical scheme, fuel oil is saved by more than 40-60% compared with the existing hoisting equipment power supply scheme. The mobile type hoisting equipment power supply method and system thereof greatly reduce oil consumption of hoisting equipment, utilization factor of fuel oil is improved, the aim of energy conservation and emission reduction is achieved, and the inherent flexibility of hoisting equipment is maintained.
Description
Technical field
The present invention relates to mobile type hoisting equipment, more particularly, relate to a kind of method of supplying power to and system of mobile type hoisting equipment.
Background technology
At present, on the market there be much the kind of common mobile type hoisting equipment, comprises tyre crane, ship crane barge and truck mounted, crawler crane etc.And the comparatively general employing of each above-mentioned hoisting equipment the diesel generating set burning diesel oil that disposes on its machine obtain operation power.
As shown in Figure 1, the power supply plan of traditional mobile type hoisting equipment is to send by powerful diesel generating set 101, by circuit breaker 102,103,104 supply with described hoisting equipment with electricity, wherein, part electricity gives other auxiliary bodies 106 of hoisting equipment (as illumination by transformer 105, air-conditioning etc.) power supply, a part is transferred to the high-power travelling mechanism (being each operation motor) of described hoisting equipment by inverter 107 and corresponding frequency converter in addition, concrete is, and the frequency converter 108 that hoists is lifting motor 181 power supplies, the dolly of crane (or rotation) frequency converter 109 and cart (or walking) frequency converter 110,111 is corresponding motor power supply, owing to the reason on job specification and the power configuration, cause the fuel utilization ratio of the power supply plan of traditional hoisting equipment only to be 8%---13%, and when descending, the suspender of hoisting equipment can make lifting motor 181 produce electric energy, but this part regenerative electric energy is not effectively utilized, and is converted to heat energy by the resistance of relevant device and consumes (consuming such as being braked unit 112 and brake resistance 113).In addition, it exists also that noise is big, discharge amount of exhaust gas is big, maintenance cost and all very high shortcoming of operating cost.
At the high problem of hoisting equipment oil consumption, some fuel-saving technique schemes have appearred in the market.As: super capacitor energy-storage, flywheel energy storage and press power demand and regulate diesel engine speed etc.It is reported that the oil-saving effect of these schemes is between 20%---40%.
As shown in Figure 2, the alternating current that diesel generating set 201 sends is handled through inverter 202, and be that motor 204 is powered through frequency converter 203, increases a super capacitor 205 and is directly parallel on the DC master row.This power supply plan can descend energy consumption more than 11～13%.But, the diesel generating set of this power supply plan configuration is equally big with the diesel generating set of traditional hoisting equipment, because the upper and lower bound of DC master row voltage has requirement, so the utilizable charge/discharge capacity model 7 of super capacitor encloses and is very restricted.
Again as shown in Figure 3,301 is diesel generating set, and super capacitor 305 is parallel on the DC master row by DC/DC converter 306.
Above-mentioned two kinds of power supply plans all are based on diesel generating set, are as energy recuperation and auxiliary power unit super capacitor.
Afterwards, also occurred hoisting equipment on the market and become oil firing into using " oil changes " scheme of machine on the grid alternating current of ground.It is reported, the energy-saving effect ably done of hoisting equipment " oil changes " scheme also be about 40%, initial outlay is big, the transition operation is wasted time and energy, and has sacrificed motor-driven, flexible characteristic that hoisting equipment possessed originally but " oil changes " brought again.
By analysis, cause the big main cause of hoisting equipment fuel consume to have:
1, the diesel engine power configuration is excessive
Hoisting and the peak power needs of two mechanisms of dolly during in order to satisfy hoisting equipment all with peak load, normal speed and rated acceleration operation, producer generally all adds surplus again at peak power and selects the high-power diesel generating set, and the continuous power during the common operation of hoisting equipment only is its part.
2, diesel engine low load time ratio is too high
According to statistics: diesel load is lower than and reaches more than 85% duration of runs of 25%, still operation at full speed of diesel engine during this period, and a large amount of reserve capacities causes the fuel oil waste serious.
3, unloaded waiting time is long
Because the decision of operation properties such as harbour, harbour, unloaded waiting time is generally 50%---65%.But because the needs of communication, illumination, air conditioner, high-power diesel engine still needs full speed running, the empty diesel oil that burns.
4, the electric energy that weight descends and mechanism's moderating process produces does not obtain utilizing
The regenerative electric energy that produces in weight decline and the mechanism's moderating process is braked resistance and has consumed in vain, can't obtain recycling.
Summary of the invention
Defectives such as oil consumption height, pollution weight and complex structure thereof at present hoisting equipment existence, the method of supplying power to and the system that the purpose of this invention is to provide a kind of mobile type hoisting equipment, this method and system not only can reduce the oil consumption of hoisting equipment significantly, improve the utilance of fuel oil, reach the energy-saving and emission-reduction purpose, and can guarantee the maneuverability of hoisting equipment.
For this reason, the method for supplying power to of hoisting equipment of the present invention comprises the steps:
A, adopt the diesel generating set of hoisting equipment to carry out the small-power generating at ordinary times;
B, convert the alternating current that generates among the step a to direct current by AC/DC;
C, control, will charge in the input of the direct current among the step b Storage Unit by the intelligent power management module;
The electric energy of d, employing Storage Unit is powered to operation and auxiliary body's electricity consumption of each high-power travelling mechanism of hoisting equipment after the DC/DC conversion.
C dashes in step, by the intelligent power management module running parameter in the Storage Unit is detected, and the charging of control Storage Unit, concrete charging controlled step comprises:
C1, the direct current that fluctuates among the step b is transformed into constant DC, for the Storage Unit charging;
C2, to be in energy storage few when Storage Unit, during the very low initial condition of internal resistance, the current limliting management carried out in the precharge of Storage Unit;
C3, when diesel generating set is worked, keep the Storage Unit normality is charged;
C4, when Storage Unit energy storage quota, the control diesel generating set turn-offs;
C5, when the Storage Unit energy storage is lower than when setting threshold values, stop each high-power travelling mechanism action, wait for that charging process carries out;
C6, when the Storage Unit energy storage is lower than set point, control diesel generating set restart generating in order to the charging.
In step c, the controlled step of described intelligent power management module also comprises:
C7, according to the size of Storage Unit energy storage capacity, the control speed regulator is dynamically adjusted the rotating speed of diesel generating set;
C8, carry out communication, obtain data such as lifting capacity, speed, power drain, and, the PLC controller is proposed the speed control requirement of high-power travelling mechanism according to the energy storage situation of Storage Unit with the PLC controller of hoisting equipment.
In described step c8:
If the Storage Unit operation irregularity will directly be powered to the high-power travelling mechanism of hoisting equipment through the direct current of AC/DC conversion by change over switch, and corresponding high-power travelling mechanism will be carried out Control for Speed Limitation.
This method of supplying power to also comprises step e:
When the high-power travelling mechanism of hoisting equipment is in weight decline or retarding braking, reclaim the regenerative electric energy that descends and quicken the braking generation by weight by Storage Unit.
If regenerative electric energy when the Storage Unit spill-over, carries out work by the brake unit and the brake resistance of control low capacity.
The electric power system of mobile type hoisting equipment of the present invention comprises:
Diesel generating set provides low-power energy as the electric energy device for supplying for system;
The AC/DC transducer, input is connected with diesel generating set, and the electric energy that diesel generating set is generated carries out the rectification processing;
Storage Unit, input is connected with the output of AC/DC transducer, and the reception electric energy also charges;
The intelligent power management module is connected between AC/DC transducer and the Storage Unit, the running parameter in the Storage Unit detected, and the charging of control Storage Unit;
The DC/DC converter, input is connected with the output of Storage Unit, and the electric energy that Storage Unit is exported converts the constant high pressure electric current to; Output is connected with the DC master row of hoisting equipment, and operation and auxiliary body's electricity consumption of each high-power travelling mechanism of hoisting equipment are powered.
Described intelligent power management module is transformed into constant DC with the direct current of the fluctuation of AC/DC transducer output, for the Storage Unit charging, and
To be in energy storage few when Storage Unit, and during the very low initial condition of internal resistance, the intelligent power management module is carried out the current limliting management to the precharge of Storage Unit;
When diesel generating set was worked, the intelligent power management module kept the Storage Unit normality is charged;
When Storage Unit energy storage quota, intelligent power management module controls diesel generating set turn-offs;
When the Storage Unit energy storage was lower than the setting threshold values, the intelligent power management module stoped each high-power travelling mechanism action, and the wait charging process is carried out;
When the Storage Unit energy storage was lower than set point, intelligent power management module controls diesel generating set restarted generating in order to charging.
Described diesel generating set has speed regulator, and described intelligent power management module is connected with speed regulator, by the control to speed regulator, dynamically adjusts the rotating speed of diesel generating set.
The output of described AC/DC transducer also passes through the DC master row of a direct cross-over connection hoisting equipment of change over switch.
The method of supplying power to of mobile type hoisting equipment of the present invention and system, at ordinary times by providing low-power energy as the electric energy device for supplying for system with diesel generating set, and with Storage Unit as complete machine electric energy feed system, method with the accumulated time energy, for high-power travelling mechanisms such as lifting mechanism provide high-power in short-term energy requirement, significantly reduced the Diesel engine generated output.Like this, at ordinary times can be by low power diesel generating set with tricklet to the Storage Unit energy storage of charging; And when the electronic work done of each high-power travelling mechanism of hoisting equipment, energy is gushed out from Storage Unit is surge.Adopt such technical scheme, the power supply plan of the traditional relatively hoisting equipment of the present invention can be saved more than the fuel oil 40%-60%, have obvious social and economic benefits, in addition, do not have that the existing initial outlay of hoisting equipment " oil changes " is big, the transition operation is wasted time and energy yet, and the problem of motor-driven, the flexible characteristic of having sacrificed that hoisting equipment possessed originally.
Therefore, the method for supplying power to of mobile type hoisting equipment of the present invention and system have the oil consumption that reduces hoisting equipment significantly, improve the utilance of fuel oil, reach the energy-saving and emission-reduction purpose, and the maneuverability that has kept hoisting equipment to have.
Description of drawings
Fig. 1 is traditional hoisting equipment electric power system schematic diagram.
Among the figure: 101, diesel generating set 102,103,104, circuit breaker 105, transformer 106, auxiliary body 107, inverter 108, frequency converter 181, lifting motor 109, dolly (or rotation) frequency converter 110,111, cart (or walking) frequency converter 112, brake unit 113, brake resistance
Fig. 2 is the electric power system schematic diagram that hoisting equipment has adopted super capacitor.
Among the figure: 201, diesel generating set 211, diesel engine 221, generator 202, inverter 203, frequency converter 204, motor 205, super capacitor 206, dynamic braking unit and resistance
Fig. 3 is the hoisting equipment electric power system schematic diagram of Japanese YASKAWA company.
Among the figure: 301, diesel generating set 311, diesel engine 321, generator 302, inverter 303, frequency converter 304, motor 305, super capacitor 306, dynamic braking unit and resistance 307, DC/DC transducer
Fig. 4 is the electric power system schematic diagram of mobile type hoisting equipment of the present invention.
Among the figure: 410, diesel generating set 411, diesel engine 412, generator 413, speed regulator 420, AC/DC transducer 430, intelligent power management module 440, Storage Unit 450, DC/DC converter 460, change over switch 470, circuit breaker 001, frequency converter 002 hoists, dolly (or rotation) frequency converter 003, cart (or walking) 1 frequency converter 004, cart (or walking) 2 frequency converters 005, auxiliary body and control power converter
Embodiment
Further specify technical scheme of the present invention below in conjunction with drawings and Examples.
Design fundamentals of the present invention are to adopt the electric energy supply source of diesel generating set as Storage Unit at ordinary times, carry out small-power generating (or directly adopting the System for Small Power Diesel Generator group), Storage Unit is charged for a long time, and Storage Unit is as main power supply source, be used for the small-power electricity consumption of auxiliary body on the one hand, on the other hand the operation in short-term of high-power travelling mechanism effectively powered.
As shown in Figure 4, the electric power system of mobile type hoisting equipment of the present invention comprises diesel generating set 410, AC/DC transducer 420, intelligent power management module 430, Storage Unit 440, DC/DC converter 450, change over switch 460.
Wherein, diesel generating set 410 is made up of diesel engine 411 and generator 412, and diesel engine 411 has speed regulator 413, has the automatic speed regulation function.Diesel generating set 401 connect AC/DC transducers 420 through a circuit breaker 470, AC/DC transducer 420 is a diode rectification.AC/DC transducer 420 connect Storage Units 440 through intelligent power management module 430 again, Storage Unit 440 can be a super capacitor, also can be storage battery or other electrical storage device.Storage Unit 440 connects the DC/DC converter again, the DC/DC converter is each mechanism's power supply of hoisting equipment through the DC master row of hoisting equipment again, promptly be connected to the frequency converter 001 that hoists, dolly (or rotation) frequency converter 002, cart (or walking) 1 frequency converter 003, cart (or walking) 2 frequency converters 004, auxiliary body and control power converter 005.In addition, intelligent power management module 430 also connects the speed regulator 413 of diesel engine 411, and AC/DC transducer 420 is also through transforming the DC master row of switch 460 direct cross-over connection hoisting equipments.
And the concrete steps of the method for supplying power to of hoisting equipment of the present invention are as follows:
But the diesel engine 411 drive generators 412 by automatic speed regulation send the non-constant alternating current of 220-440V, 25-50HZ, through 420 rectifications of AC/DC transducer, (intelligent power management module 430 is according to Storage Unit 440 change in voltage through intelligent power management module 430 for the direct current that obtains, according to the relation of I=P/V, adjust charging current automatically and electric current be limited in the permissible value) Storage Unit 440 is charged.Storage Unit 440 voltage signals and hoisting equipment electric-control system operational order are sent to speed regulator 413 inputs of diesel engine 411, jointly control the rotating speed of diesel engine 411, realize the purpose of pressing energy requirement regulator generator 412 energy output.Because Storage Unit 440 voltages can not suddenly change, so diesel engine 411 rotating speeds can not suddenly change yet, and this can be under the good working environment engine 412 all the time, and is of great advantage useful life to prolonging diesel engine.The required electric energy of each mechanism of hoisting equipment and auxiliary body provides by Storage Unit 440, its process is: the electric energy (voltage 300-600V) that Storage Unit 440 stores is converted to the 600V stable DC by DC/DC transducer 450 and gives the power supply DC master row, power to each mechanism and auxiliary body by DC master row again, each travelling mechanism is when weight decline or retarding braking, and the regenerative electric energy of generation is all reclaimed by Storage Unit 440.
When Storage Unit breaks down, can start the emergency pattern, promptly pass through change over switch 460 with AC/DC transducer 420 and DC master row cross-over connection, at this moment software control is limited in 50% of normal speed with the lifting mechanism highest running speed, dolly (or rotation) and cart (or walking) mechanism speed remain unchanged, but this moment does not allow to hoist and the interlock of dolly (or rotation) mechanism.
In the present invention, Storage Unit 440 electric power signal and the load signal that hoists can be introduced 413 speed regulator inputs of diesel engine 411, with the rotating speed of regulating diesel engine 413 and the automatic start-stop of finishing diesel engine, solve long-time underload and the unloaded fuel oil waste that causes.
In the present invention, intelligent power management module 430 is the speed regulating control of management diesel engine, the automatic start-stop control of diesel engine; Also manage the charging control of Storage Unit 440, concrete function is as follows:
1, the diesel engine 411 of automatic speed regulation drives generator 412 and sends the non-constant alternating current of 220～440V, 25～0HZ, delivers to diode rectification after smoothing reactor filtering, the direct current input intelligent power management module 430 that obtains;
2, intelligent power management module 430 is transformed into constant 600V direct current to 300～600V direct current of input, outputs to Storage Unit 440, charges.
3, Storage Unit 440 initial conditions, energy storage is few, and internal resistance is very low, and intelligent power management module 430 is carried out the current limliting management when precharge.
4, Storage Unit 440 energy storage are lower than when setting threshold values, and intelligent power management module 430 does not allow each travelling mechanism action of hoisting equipment, and the wait charging process is carried out.
When 5, diesel generating set 410 was worked, intelligent power management module 430 kept Storage Unit 440 normalities are charged.
6, during Storage Unit 440 energy storage quotas, intelligent power management module 430 control diesel generating sets 410 turn-off.
When 7, Storage Unit 440 energy storage were lower than set point, intelligent power management module 430 control diesel generating sets 410 restarted.
8, according to the size of Storage Unit 440 energy storage capacities, intelligent power management module 430 is dynamically adjusted the rotating speed of diesel engine generator.
9, intelligent power management module 430 detect and control Storage Unit 440 in electric current, temperature, junior units parameter such as all press.
10, intelligent power management module 430 is carried out communication with hoisting equipment PLC controller, obtains data such as lifting capacity, speed, power drain, and according to the energy storage situation of Storage Unit 440 PLC is proposed the mechanism speed requirement.
In the present invention, DC/DC converter 450 is transformed into stable 600V direct current to 300～600V direct current of Storage Unit 440 outputs and offers each travelling mechanism need for electricity of hoisting equipment; Travelling mechanism is when weight decline or retarding braking, and the regenerative electric energy of generation is all reclaimed by DC/DC converter 450 input Storage Units 440; Regenerative electric energy only when Storage Unit 440 spill-overs, is just controlled the brake unit and the brake resistance work of a low capacity.
By adopting the hoisting equipment of technical scheme of the present invention, its fuel consumption can descend more than the 40%-60%, the common in the market mobile type hoisting equipment that comprises tyre crane, ship crane barge, truck mounted, crawler crane and other various employing high-power diesel generating sets all can adopt the technology of the present invention.For example the outfit amount of national only this class of rubbertyred container gantry crane is just above 2000, if wherein half adopts the present invention to transform, calculate by annual operation 100,000 Units of every rubbertyred container gantry crane, 2 liters/Unit of average fuel consumption, can save 130,000 liters of fuel oils every year, can save 1.3 hundred million liters of fuel oils that every year, reduce expenses 600,000,000 yuan, reduce 340,000 tons of CO2 emissions, reduce about 1000 tons of sulfur dioxide (SO2) emissions, economic benefit and the social benefit brought are fairly obvious.
In sum, the method for supplying power to of mobile type hoisting equipment of the present invention and system have the oil consumption that reduces hoisting equipment significantly, improve the utilance of fuel oil, reach the advantage of energy-saving and emission-reduction purpose, and the maneuverability that has kept hoisting equipment to have.
Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the present invention, and be not to be used as limitation of the invention, as long as in connotation scope of the present invention, all will drop in claims scope of the present invention variation, the modification of above embodiment.
Claims (10)
1. the method for supplying power to of a mobile type hoisting equipment is characterized in that, comprises the steps:
A, adopt the diesel generating set of hoisting equipment to carry out the small-power generating at ordinary times;
B, convert the alternating current that generates among the step a to direct current by AC/DC;
C, control, will charge in the input of the direct current among the step b Storage Unit by the intelligent power management module;
The electric energy of d, employing Storage Unit is powered to operation and auxiliary body's electricity consumption of each high-power travelling mechanism of hoisting equipment after the DC/DC conversion.
2. the method for supplying power to of mobile type hoisting equipment according to claim 1 is characterized in that,
In step c, by the intelligent power management module running parameter in the Storage Unit is detected, and the charging of control Storage Unit, concrete charging controlled step comprises:
C1, the direct current that fluctuates among the step b is transformed into constant DC, for the Storage Unit charging;
C2, to be in energy storage few when Storage Unit, during the very low initial condition of internal resistance, the current limliting management carried out in the precharge of Storage Unit;
C3, when diesel generating set is worked, keep the Storage Unit normality is charged;
C4, when Storage Unit energy storage quota, the control diesel generating set turn-offs;
C5, when the Storage Unit energy storage is lower than when setting threshold values, stop each high-power travelling mechanism action, wait for that charging process carries out;
C6, when the Storage Unit energy storage is lower than set point, control diesel generating set restart generating in order to the charging.
3. the method for supplying power to of mobile type hoisting equipment according to claim 1 is characterized in that,
In step c, the controlled step of described intelligent power management module also comprises:
C7, according to the size of Storage Unit energy storage capacity, the control speed regulator is dynamically adjusted the rotating speed of diesel generating set;
C8, carry out communication, obtain data such as lifting capacity, speed, power drain, and, the PLC controller is proposed the speed control requirement of high-power travelling mechanism according to the energy storage situation of Storage Unit with the PLC controller of hoisting equipment.
4. the method for supplying power to of mobile type hoisting equipment according to claim 3 is characterized in that,
In described step c8:
If the Storage Unit operation irregularity will directly be powered to the high-power travelling mechanism of hoisting equipment through the direct current of AC/DC conversion by change over switch, and corresponding high-power travelling mechanism will be carried out Control for Speed Limitation.
5. the method for supplying power to of mobile type hoisting equipment according to claim 1 is characterized in that,
This method of supplying power to also comprises step e:
When the high-power travelling mechanism of hoisting equipment is in weight decline or retarding braking, reclaim the regenerative electric energy that descends and quicken the braking generation by weight by Storage Unit.
6. hoisting equipment method of supplying power to according to claim 5 is characterized in that:
If regenerative electric energy when the Storage Unit spill-over, carries out work by the brake unit and the brake resistance of control low capacity.
7. the electric power system of a mobile type hoisting equipment is characterized in that, comprising:
Diesel generating set provides low-power energy as the electric energy supply source;
The AC/DC transducer, input is connected with diesel generating set, and the electric energy that diesel generating set is generated carries out the rectification processing;
Storage Unit, input is connected with the output of AC/DC transducer, and the reception electric energy also charges;
The intelligent power management module is connected between AC/DC transducer and the Storage Unit, the running parameter in the Storage Unit detected, and the charging of control Storage Unit;
The DC/DC converter, input is connected with the output of Storage Unit, and the electric energy that Storage Unit is exported converts the constant high pressure electric current to; Output is connected with the DC master row of hoisting equipment, and operation and auxiliary body's electricity consumption of each high-power travelling mechanism of hoisting equipment are powered.
8. the electric power system of mobile type hoisting equipment according to claim 7 is characterized in that:
Described intelligent power management module is transformed into constant DC with the direct current of the fluctuation of AC/DC transducer output, for the Storage Unit charging, and
To be in energy storage few when Storage Unit, and during the very low initial condition of internal resistance, the intelligent power management module is carried out the current limliting management to the precharge of Storage Unit;
When diesel generating set was worked, the intelligent power management module kept the Storage Unit normality is charged;
When Storage Unit energy storage quota, intelligent power management module controls diesel generating set turn-offs;
When the Storage Unit energy storage was lower than the setting threshold values, the intelligent power management module stoped each high-power travelling mechanism action, and the wait charging process is carried out;
When the Storage Unit energy storage was lower than set point, intelligent power management module controls diesel generating set restarted generating in order to charging.
9. the electric power system of mobile type hoisting equipment according to claim 7 is characterized in that:
Described diesel generating set has speed regulator, and described intelligent power management module is connected with speed regulator, by the control to speed regulator, dynamically adjusts the rotating speed of diesel generating set.
10. according to the electric power system of each described mobile type hoisting equipment in the claim 7 to 9, be characterised in that:
The output of described AC/DC transducer also passes through the DC master row of a direct cross-over connection hoisting equipment of change over switch.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103342124A (en) * | 2013-07-25 | 2013-10-09 | 潍柴动力股份有限公司 | Method and device for controlling force taking of power takeoff |
| CN104079064A (en) * | 2014-06-04 | 2014-10-01 | 华中科技大学 | Self-provided power supply system |
| CN107196419A (en) * | 2017-06-30 | 2017-09-22 | 中国西电电气股份有限公司 | A kind of energy storage units and method that high-power supply in short-term is provided |
| US20170275140A1 (en) * | 2016-03-24 | 2017-09-28 | Shenzhen Zhaohan Technology Development Co., Ltd. | Three-power hybrid energy saving system of a rubber tyred gantry crane |
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| CN101521470A (en) * | 2009-03-26 | 2009-09-02 | 严兆基 | Power supply method and power supply system for rubber-tyred container gantry crane |
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- 2009-06-16 CN CN2009100531160A patent/CN101924478A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101521470A (en) * | 2009-03-26 | 2009-09-02 | 严兆基 | Power supply method and power supply system for rubber-tyred container gantry crane |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103342124A (en) * | 2013-07-25 | 2013-10-09 | 潍柴动力股份有限公司 | Method and device for controlling force taking of power takeoff |
| CN103342124B (en) * | 2013-07-25 | 2016-08-10 | 潍柴动力股份有限公司 | The control method of a kind of power takeoff power taking and device |
| CN104079064A (en) * | 2014-06-04 | 2014-10-01 | 华中科技大学 | Self-provided power supply system |
| CN104079064B (en) * | 2014-06-04 | 2018-01-23 | 华中科技大学 | A kind of power autonomous system |
| US20170275140A1 (en) * | 2016-03-24 | 2017-09-28 | Shenzhen Zhaohan Technology Development Co., Ltd. | Three-power hybrid energy saving system of a rubber tyred gantry crane |
| WO2017161842A1 (en) * | 2016-03-24 | 2017-09-28 | 深圳市兆涵科技发展有限公司 | Three-power hybrid energy saving system for rubber-tired gantry crane |
| CN107196419A (en) * | 2017-06-30 | 2017-09-22 | 中国西电电气股份有限公司 | A kind of energy storage units and method that high-power supply in short-term is provided |
| CN107196419B (en) * | 2017-06-30 | 2020-03-31 | 中国西电电气股份有限公司 | Energy storage unit and method for providing short-time high-power supply |
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Application publication date: 20101222 |