CN101652310A - Crane device - Google Patents
Crane device Download PDFInfo
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- CN101652310A CN101652310A CN200880011045A CN200880011045A CN101652310A CN 101652310 A CN101652310 A CN 101652310A CN 200880011045 A CN200880011045 A CN 200880011045A CN 200880011045 A CN200880011045 A CN 200880011045A CN 101652310 A CN101652310 A CN 101652310A
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- power generation
- generation assembly
- engine power
- common bus
- sustainer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/18—Control systems or devices
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- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- Control And Safety Of Cranes (AREA)
Abstract
A crane device has a main engine generator (1) in addition to an auxiliary engine generator (2). A controller (7) outputs an operational instruction (10), which represents whether or not power generation is required, to the main engine generator (1) based on conditions of power supply to a common bus line (9) from at least either of the main engine generator (1) and the auxiliary engine generator(2). As a result, power is generated by the main engine generator (1) only in a high-load condition, and power supply is made from both the main engine generator (1) and the auxiliary engine generator(2). Further, in a low-load condition, power generation by the main engine generator (1) is stopped and power is supplied only from the auxiliary engine generator (2). The construction eliminates theneed of constantly generating power by the large-scale main engine generator (1), so that operational costs of the crane device are significantly reduced.
Description
Technical field
[0001]
The present invention relates to crane equipment, particularly the crane equipment of engine drive generation mode (this engine drive generation mode adopts engine drive to send driving power).
Background technology
[0002]
In distribution centre, bay and other items, use crane equipment boats and ships and trailer to be carried out the loading and unloading of freight container and other items.This crane equipment uses a plurality of electrical motors, carries out actions such as the walking of lifting of goods, stand and side travel.In addition, in order to supply with action electric power to these electrical motors, in the engine drive generation mode, adopt structure from necessary electric power to each electrical motor that use electrisity generator of engine (this electrisity generator of engine diesel engine drives electrical generator) to supply with.
[0003]
In this crane equipment, often when the goods of slinging etc., become peak load, power demand hardly then when falling goods etc., load change is very big.Like this, in order to supply with the power consistent, just need to use large-scale diesel motor and electrical generator with busy hour by electrical generator., this electrical generator is owing to the scale that becomes above mean load, so aspect equipment cost and operating cost, efficient is poor.
[0004]
Following proposal is disclosed in document 1 (spy opens the 2001-163574 communique): electrical storage device is set for this crane equipment, in all the time with the electrisity generator of engine generating, also when peak load etc. by electrical storage device supply power in parallel, during regeneration the surplus power that produces is charged to electrical storage device.Like this, because the enough electrical storage devices of energy so can dwindle the scale of diesel motor and electrical generator, are improving efficient aspect equipment cost and the operating cost temporarily to the electrical motor supply power.
[0005]
; in this prior art; because electrical storage device itself is relatively more expensive,, need supply with the major part of maximum load power with electrisity generator of engine so can not till the hoisting crane release, supply with bigger power with electrical storage device for a long time.Like this, just the equipment scale of electrisity generator of engine can not be narrowed down to desirable degree, also because all the time with this electrisity generator of engine generating, so exist the problem that to cut down operating cost significantly.In addition, also exist and not only can not expect reduction equipment scale significantly, and because need expensive electrical storage device, so can not cut down the problem of equipment cost effectively.
Summary of the invention
[0006]
The present invention develops at above-mentioned situation, and its purpose is to be provided at when can realize cutting down operating cost significantly, the crane equipment of the equipment cost that can also effectively cut down.
[0007]
In order to achieve the above object, the crane equipment that the present invention relates to possesses: sustainer, main engine power generation assembly, this sustainer, main engine power generation assembly are supplied with to common bus and are adopted the engine drive developed power; Assistant engine power generation assembly, this assistant engine power generation assembly are supplied with to common bus and are adopted the engine drive developed power; The Power Conversion that electrical motor, this electrical motor will be supplied with common bus becomes the propulsive effort that is intended to handling goods; Controller, this controller according to for common bus from least one the power supply situation in sustainer, main engine power generation assembly and the assistant engine power generation assembly, the running instruction whether control generates electricity to sustainer, main engine power generation assembly output expression.
[0008]
After adopting the present invention, only when high load capacity, generate electricity, by both power supplies such as autonomous electrisity generator of engine and assistant engine power generation assembly with the sustainer, main engine power generation assembly.Therefore, do not need to generate electricity with the very big sustainer, main engine power generation assembly of equipment scale all the time, can cut down operating cost significantly.
[0009]
In addition, the assistant engine power generation assembly generally is the cost equipment scale more cheap than electrical storage device, can stably supply with the power bigger than electrical storage device till the hoisting crane release for a long time.Like this, just can cut down the equipment scale of sustainer, main engine power generation assembly, compare during with the electrical storage device that uses identical scale, as whole crane equipment, cutting down cost effectively.
Description of drawings
[0010]
Fig. 1 is the block scheme of the structure of the crane equipment that relates to of expression the 1st embodiment of the present invention.
Fig. 2 is the functional block diagram of the controller among Fig. 1.
Fig. 3 is the diagram of circuit that the Generation Control of the crane equipment that relates to of expression the 1st embodiment of the present invention is handled.
Fig. 4 is the sequential chart of the action example of the crane equipment that relates to of expression the 1st embodiment of the present invention.
Fig. 5 is the functional block diagram of the controller in the crane equipment that relates to of expression the 2nd embodiment of the present invention.
Fig. 6 is the sequential chart of the action example of the crane equipment that relates to of expression the 2nd embodiment of the present invention.
Fig. 7 is the functional block diagram of the controller in the crane equipment that relates to of expression the 3rd embodiment of the present invention.
Fig. 8 is the sequential chart of the action example of the crane equipment that relates to of expression the 3rd embodiment of the present invention.
The specific embodiment
[0011]
Below, with reference to accompanying drawing, tell about the embodiment that the present invention relates to.
[the 1st embodiment]
With reference to Fig. 1, tell about the crane equipment that the 1st embodiment of the present invention relates to.
Crane equipment shown in Figure 1 is after common bus 9 is supplied with by the engine drive developed power, drives and common bus 9 bonded assembly electrical motors 30～33, thus the device that carries out the loading and unloading of goods.This crane equipment mainly possesses sustainer, main engine power generation assembly 1, assistant engine power generation assembly 2, changer (CONV) 13,23, master file electrical motor 30, walking electrical motor 31,32, side travel electrical motor 33, inverter (INV) 41～44, electric discharge device 5, electrical storage device 6, controller 7 and common bus 9.
[0012]
Present embodiment is to utilize controller 7, according to for common bus 9 from least one the electric power state of supply in sustainer, main engine power generation assembly 1 and the assistant engine power generation assembly 2, the running instruction 10 of whether generating electricity to the 1 output expression of sustainer, main engine power generation assembly.
[0013]
Below, tell about the structure of the crane equipment that present embodiment relates in detail.
Sustainer, main engine power generation assembly 1 has diesel motor (DE) 11 and alternating current generator (G) 12, is after driving alternating current generator 12 generatings with diesel motor 11, the device of output AC electric current.This sustainer, main engine power generation assembly 1 has the running instruction 10 of whether generating electricity according to the expression that comes self-controller 7, the function of the beginning of the excitation of the beginning of the running of control diesel motor 11/stop or alternating current generator 12/stop.
Changer 13 is to connect between sustainer, main engine power generation assembly 1 and common bus 9, the alternating current rectification of sustainer, main engine power generation assembly 1 output is become the rectifying device of supplying with common bus 9 after the DC current.
[0014]
Assistant engine power generation assembly 2 has diesel motor (DE) 21 and alternating current generator (G) 22, is after driving alternating current generator 22 generatings with diesel motor 21, the device of output AC electric current.This assistant engine power generation assembly 2 has the running instruction 20 of whether generating electricity according to the expression that comes self-controller 7, the function of the beginning of the excitation of the beginning of the running of control diesel motor 21/stop or alternating current generator 22/stop.
Changer 23 is to connect between assistant engine power generation assembly 2 and common bus 9, the alternating current rectification of assistant engine power generation assembly 2 outputs is become the rectifying device of supplying with common bus 9 after the DC current.
[0015]
Electrical motor 30～33 is devices that the power converter that will supply with common bus 9 becomes to be intended to the propulsive effort of handling goods.In more detail, master file electrical motor 30 is intended to carry out the alternating-current motor/AC motor of lifting of goods.Walking electrical motor 31,32 is intended to carry out the alternating-current motor/AC motor of the walking of stand.Side travel electrical motor 33 is intended to carry out the alternating-current motor/AC motor of the side travel of stand.
[0016]
Inverter 41 is to supply with master file electrical motor 30 and the DC/AC changer of the electrical motor 31 of walking after the DC current on the common bus 9 is transformed into alternating current.
Inverter 42 is to supply with master file electrical motor 30 and the DC/AC changer of the electrical motor 32 of walking after the DC current on the common bus 9 is transformed into alternating current.
Inverter 43 is that the DC current on the common bus 9 is transformed into the DC/AC changer of supplying with side travel electrical motor 33 behind the alternating current.
Inverter 44 is after the DC current on the common bus 9 is transformed into alternating current, the DC/AC changer of supplying with as the power supply of illumination, air-conditioning and various subsidiary engines.
[0017]
Electric discharge device 5 is to use resistor etc., the circuit arrangement that the residue DC current that produces on the common bus 9 when falling regeneration such as goods is discharged.
Electrical storage device 6, it is the circuit arrangement of the storage battery of internal battery and cond etc., have according to for common bus 9 from least one the electric power state of supply in sustainer, main engine power generation assembly 1 and the assistant engine power generation assembly 2, the function of utilizing storage battery that common bus 9 is discharged and recharged.
[0018]
Controller 7 has microprocessor and peripheral circuits thereof such as CPU, from the memory device of microprocessor or peripheral circuit setting, carries out behind the read routine, thus the program of making and above-mentioned hardware concerted action, realization is intended to control the various functions of whole crane equipment.
[0019]
As the main function portion of controller 7, as shown in Figure 2, have hoisting crane running portion 71, power supply situation confirmation unit 72 and Generation Control portion 73.Hoisting crane running portion 71, the operator's who detects according to mediating instruction input 70, control inverter 41～44, thereby operational situations such as the walking of control lifting of goods, stand and side travel by control lever and operating switch.Power supply situation confirmation unit 72, confirm for common bus 9 from least one the electric power state of supply in sustainer, main engine power generation assembly 1 and the assistant engine power generation assembly 2.Generation Control portion 73 according to the electric power state of supply of confirming, instructs 10 to the running whether 1 output expression of sustainer, main engine power generation assembly generates electricity.
[0020]
Utilize power supply situation confirmation unit 72 confirm for common bus 9 from least one the electric power state of supply in sustainer, main engine power generation assembly 1 and the assistant engine power generation assembly 2 time, if compared for the load power of necessity and the threshold value of regulation, it is excessive and not enough just can to confirm that electric power is supplied with.
[0021]
Concrete method as calculated load power, can adopt the revolution of the unit time of change according to the electric power of supplying with common bus 9, electrical motor 30～33 is that Calculation Method is carried out in the instruction input 70 that rotative speed or operator assign, and can use some in these 3 methods at least.
Method about the change of electric power that use to supply with common bus 9 for example can monitor electric current and the voltage of being supplied with the electric power of common buss 9 by changer 13,23, as load power, calculates the electric power by these electric currents and voltage effective supply.
[0022]
About the method for the rotative speed 45 that uses electrical motor 30～33, can use the rotative speed of controller 7 instruction inverters 41～44, according to the acting characteristic of these rotative speeds and each electrical motor 30～33, the load power that calculating motor 30～33 consumes.In addition, because rotative speed 45 and inverter 41～44 equate to the output frequency of the alternating current of electrical motor 30～33 outputs, so, use after can obtaining the output frequency of inverter 41～44 as rotative speed 45.
About using the method for instruction input 70, can be according to running operations such as the walking of lifting of goods, stand and side travels, the load power of instrumentation necessity is saved in the memory device in advance, reads from memory device with the actual instruction that detects and imports 70 cooresponding load powers.
[0023]
[action of the 1st embodiment]
Then, the action of the crane equipment that relates to as the 1st embodiment of the present invention, with reference to Fig. 3 and Fig. 4, the Generation Control of telling about in detail in the controller 7 is handled.Here, to confirm that according to the change of the electric power of supplying with common bus 9 the electric power state of supply is an example, tell about.
[0024]
Controller 7 is according to the situation that detects of operator's entry into service operation, and the Generation Control of beginning Fig. 3 is handled.
The Generation Control portion 73 of controller 7 exports running instruction 20 (the step S100) that expression begins to generate electricity to assistant engine power generation assembly 2.Like this, as shown in during before the moment T0 of Fig. 4 like that, mediate by changer 23, only will be with the secondary supply power 24 supply common buss 9 of assistant engine power generation assembly 2 generatings.At this moment, sustainer, main engine power generation assembly 1 also of no use generates electricity.
[0025]
Then, the power supply situation confirmation unit 72 of controller 7 detects main supply power 14 that generates electricity with sustainer, main engine power generation assembly 1 and the secondary supply power 24 (step S101) that generates electricity with assistant engine power generation assembly 2, confirms whether sustainer, main engine power generation assembly 1 is in (step S100) in the generation outage now.Whether be in affirmation in the generation outage about this, both the running-active status validation of information that can keep according to controller 7 also can be confirmed according to the actual main supply power that detects 14.
[0026]
Here, when sustainer, main engine power generation assembly 1 is in the generation outage now (step S102:YES), the load power 34 that will be made of main supply power 14 that detects and secondary supply power 24 sums compares (step S103) with certain the generating beginning threshold value Pth that preserves in advance in memory device.As this generating beginning threshold value Pth, for example use the value that equates with maximum supply power PS that assistant engine power generation assembly 2 can be supplied with.Like this, can when load power 34 surpasses generating beginning threshold value Pth, judge that the secondary supply power of using from assistant engine power generation assembly 2 24 is undersupply, need begin with 1 generating of sustainer, main engine power generation assembly; Be generating beginning threshold value Pth when following in load power 34, judge that the secondary supply power of using from assistant engine power generation assembly 2 24 is excess supply, do not need with 1 generating of sustainer, main engine power generation assembly.
[0027]
In step S103, load power 34 is generating beginning threshold value Pth when following (step S 103:NO), does not assign to sustainer, main engine power generation assembly 1 and does not return step S101 with beginning power generation command.On the other hand, when load power surpasses generating beginning threshold value Pth (step S103:YES), the Generation Control portion 73 of controller 7 utilizes running instruction 10 after sustainer, main engine power generation assembly 1 is assigned the beginning power generation command (step S104), returns step S101.
[0028]
Like this, in the moment of Fig. 4 T0, instruct input, during the action of beginning starter,, use secondary supply power 24 at first as the load power in the inverter 41～44 34.Then, in moment T1, surpass moment of generating beginning threshold value Pth, utilize running instruction 20 to assign the beginning power generation command to sustainer, main engine power generation assembly 1 in load power 34.Like this, the both of main supply power 14 and secondary supply power 24 is supplied to common bus 9, and in moment T2, main supply power 14 becomes maxim PM, and load power 34 also becomes maxim PL.
[0029]
In addition, in step S102, when sustainer, main engine power generation assembly 1 is generating electricity (step S102:NO), the load power 34 that the power supply situation confirmation unit 72 of controller 7 will be made of main supply power 14 that detects and secondary supply power 24 sums compares (step 5105) with certain the generating outage threshold Pth that preserves in advance in memory device.As this generating outage threshold Pth, for example use the value that equates with maximum supply power PS that assistant engine power generation assembly 2 can be supplied with.Like this, can be generating outage threshold Pth when above, judge that the secondary supply power of using from assistant engine power generation assembly 2 24 is undersupply, need to continue with 1 generating of sustainer, main engine power generation assembly in load power 34; Be generating outage threshold Pth when following in load power 34, judge that the secondary supply power of using from assistant engine power generation assembly 2 24 is excess supply, do not need with 1 generating of sustainer, main engine power generation assembly.
[0030]
In step S105, load power 34 is generating outage threshold Pth when above (step S105:NO), does not assign to sustainer, main engine power generation assembly 1 and does not return step S101 with beginning power generation command.On the other hand, when load power is lower than generating outage threshold Pth (step S105:YES), the Generation Control portion 73 of controller 7 utilizes running instruction 20 to assign generation outage instruction back (step S107) to sustainer, main engine power generation assembly 1, returns step S101.
[0031]
Like this, in the moment of Fig. 4 T3, instruct input, when stopping motor-driven the work, load power 34 descends.Then, in moment T4,, utilize running instruction 10 to assign the generation outage instruction to sustainer, main engine power generation assembly 1 in the moment that is lower than generating outage threshold Pth.Like this, just only secondary supply power 24 is supplied with common bus 9.
[0032]
[effect of the 1st embodiment]
Like this, present embodiment utilizes controller 7, according to for common bus 9 from least one the electric power state of supply in sustainer, main engine power generation assembly 1 and the assistant engine power generation assembly 2, the running instruction 10 of whether generating electricity to the 1 output expression of sustainer, main engine power generation assembly.Therefore, can only when high load capacity, make 1 generating of sustainer, main engine power generation assembly, wait both supply powers by sustainer, main engine power generation assembly 1 and assistant engine power generation assembly 2, when underload, then make 1 generation outage of sustainer, main engine power generation assembly, only supply with electric power from assistant engine power generation assembly 2.So, do not need to make all the time 1 generating of the bigger sustainer, main engine power generation assembly of equipment scale, can when cutting down operating cost significantly, also cut down influence significantly to environment.
[0033]
Particularly in the large-scale crane equipment of stand walking and so on, owing to the several times that are equivalent to its mean load power at the required maximum load power of load side, so the electric power that assistant engine power generation assembly 2 sends is just enough below mean load power.Like this, compare with the equipment scale of the sustainer, main engine power generation assembly 1 that when needing maximum load power, generates electricity, can cut down the equipment scale of assistant engine power generation assembly 2 significantly, can when cutting down operating cost significantly, also cut down influence significantly environment.
[0034]
In addition, assistant engine power generation assembly 2 generally is the cost equipment scale more cheap than electrical storage device, can stably supply with the electric power bigger than electrical storage device till the hoisting crane release for a long time.Like this, the equipment scale that just can cut down sustainer, main engine power generation assembly 1 is the scale of diesel motor 11 and alternating current generator 12, compares during with the electrical storage device that uses identical scale, can cut down equipment cost significantly.Like this as whole crane equipment, cutting down cost effectively.
[0035]
In addition, in the present embodiment, can be as shown in Figure 1, electrical storage device 6 is connected with common bus 9, according to for common bus 9 from least one the electric power state of supply in sustainer, main engine power generation assembly 1 and the assistant engine power generation assembly 2, utilize charging and discharging of accumulator to common bus 9.
[0036]
For example as shown in Figure 3, in moment T1, after sustainer, main engine power generation assembly 1 begins generating, reach up to main supply power 14 till the moment T2 of maxim PM during, sustainer, main engine power generation assembly 1 is not often to common bus 9 supply powers.At this moment, can discharge to common bus 9, replenish the electric power of not enough part by the storage battery of electrical storage device 6.In addition, from the regeneration of the moment T3 time and the consumption electric power of electrical motor 30～33 lower during, if the dump power that common bus 9 is produced just can effectively utilize dump power to the battery charge of electrical storage device 6.
[0037]
The control that discharges and recharges about electrical storage device 6, for example can be same with the running instruction 10,20 for sustainer, main engine power generation assembly 1 and assistant engine power generation assembly 2, utilize controller 7, according to for common bus 9 from least one the electric power state of supply in sustainer, main engine power generation assembly 1 and the assistant engine power generation assembly 2, output discharges and recharges instruction for electrical storage device 6.
Be provided with perhaps can also for electrical storage device 6 and discharge and recharge controllable function, be lower than the discharge threshold of regulation when following at the vdc of common bus 9, supply with the DC current of storage battery savings to common bus 9, when the DC voltage rising of common bus 9 is above to the charge threshold of regulation, with the DC current of common bus 9 to battery charge.
[0038]
Like this, can be when the rotation of electrical motor 30～33 is quickened etc. need many electric power during, avoid applying bigger load to sustainer, main engine power generation assembly 1 and assistant engine power generation assembly 2.In addition and since only this load power become peak value during the temporary transient electrical storage device 6 that uses, so do not need very big capacitance of storage, compare with above-mentioned prior art, can reduce the required equipment cost of electrical storage device 6.
[0039]
[the 2nd embodiment]
Then, with reference to Fig. 5 and Fig. 6, tell about the crane equipment that the 2nd embodiment of the present invention relates to.In these figure,, give identical symbol for identical with Fig. 2 and the described element of Fig. 4 or be equivalent to its element.
In the 1st embodiment, be that example is told about with the assistant engine power generation assembly 2 that turns round all the time, and in the present embodiment, be that example is told about then to make 2 generation outages of running assistant engine power generation assembly as required.
[0040]
The crane equipment that present embodiment relates to is the crane equipment that the controller 7 of crane equipment that the 1st embodiment is related to is replaced as controller 7b shown in Figure 5.The 73b of Generation Control portion of controller 7b, on the basis of the function of the Generation Control portion 73 in the 1st embodiment, the supply condition that also has the main supply power of supplying with according to sustainer, main engine power generation assembly 1 14, the function of assistant engine power generation assembly 2 being carried out generation outage control.In other words, as shown in Figure 6, in moment T2, rise to the moment till the value of regulation at the main supply power 14 that sustainer, main engine power generation assembly 1 is supplied with, to the running instruction 20 of assistant engine power generation assembly 2 output command generation outages.In addition, in moment T3,, instruct 20 to the running that assistant engine power generation assembly 2 output commands restart to generate electricity in the moment that 1 generation outage of sustainer, main engine power generation assembly, main supply power 14 begin to descend.
In addition, other structure of crane equipment and controller 7b and action and the 1st embodiment are same, so repeat no more.
[0041]
[effect of the 2nd embodiment]
Like this, in the present embodiment, because can be during sustainer, main engine power generation assembly 1 supply power, output makes the running instruction 20 of assistant engine power generation assembly 2 generation outages, so can cut down the consumption of fuel of assistant engine power generation assembly 2, cuts down operating cost.
[0042]
In addition, because the supply condition of the main supply power of supplying with according to sustainer, main engine power generation assembly 1 14 carries out generation outage control to assistant engine power generation assembly 2,, cut down operating cost so can cut down consumption of fuel expeditiously.Particularly because till the value that rises to regulation from main supply power 14 the time till being carved into the moment that main supply power 14 begins to descend during, make 2 generation outages of assistant engine power generation assembly, so can stably supply with by main supply power 14 main supply power 14 during, make 2 generation outages of assistant engine power generation assembly, can keep stable electric power supply condition.
[0043]
In addition, about make 2 generation outages of assistant engine power generation assembly during the moment, so long as during by sustainer, main engine power generation assembly 1 supply power, just can stop and restarting generating at any time.
[0044]
[the 3rd embodiment]
Follow again,, tell about the crane equipment that the 3rd embodiment of the present invention relates to reference to Fig. 7 and Fig. 8.In these figure,, give identical symbol for identical with Fig. 2 and the described element of Fig. 4 or be equivalent to its element.
In the 1st embodiment, is that example is told about with sustainer, main engine power generation assembly 1 in the situation that load power 34 is lower than the moment generation outage of generation outage threshold value, and in the present embodiment, then to confirm to be lower than the moment of generation outage threshold value from load power 34, during the supervision of whole regulation, after electric power was supplied with the state that continues to keep superfluous, the situation of generation outage was that example is told about.
[0045]
The crane equipment that present embodiment relates to is the crane equipment that the controller 7 of crane equipment that the 1st embodiment is related to is replaced as controller 7c shown in Figure 7.The 73c of Generation Control portion of controller 7c, in the moment of confirming to be lower than the generation outage threshold value from load power 34, during the supervision of whole regulation, after electric power is supplied with the state that continues to keep superfluous, generation outage.In other words, as shown in Figure 8, in moment T4, be lower than the moment of generation outage threshold value Pth from load power 34, enter Tw during the supervision, utilize power supply situation confirmation unit 72c, confirm during this monitors among the Tw, load power 34 is lower than the state of generation outage threshold value Pth, and promptly electric power is supplied with the state that whether continues to keep surplus.
[0046]
Here, during monitoring among the Tw, load power 34 becomes generation outage threshold value Pth when above, and the 73c of Generation Control portion does not make 1 generation outage of sustainer, main engine power generation assembly, continues to supply with main supply power 14 (heavy line).On the other hand, among the Tw, electric power is supplied with the state that continues to keep surplus during whole supervision, and during due in T5, the 73c of Generation Control portion utilizes running instruction 10 to make sustainer, main engine power generation assembly 1 generation outage (heavy line).
In addition, other structure of crane equipment and controller 7c and action and the 1st embodiment are same, so repeat no more.
[0047]
[effect of the 3rd embodiment]
Like this, in the present embodiment, because in the moment of confirming to be lower than generation outage threshold value Pth from load power 34, Tw during the supervision of whole regulation, after electric power was supplied with the state that continues to keep superfluous, generation outage became superfluous state so can judge the electric power supply conscientiously.
Particularly in crane equipment, often for the height of adjusting goods and the position in the azimuth direction, and at short interval, proceed the beginning of hoisting crane action and stop, promptly carrying out so-called crawl operation.At this moment, descend, can rise at once,, will increase the weight of the action burden of sustainer, main engine power generation assembly so, sustainer, main engine power generation assembly 1 is begun/generation outage repeatedly at this short interval although load power is temporary transient.After adopting present embodiment, because can judge the state that electric power is supplied with becomes surplus conscientiously, so can avoid increasing the weight of the action burden of sustainer, main engine power generation assembly.
[0048]
[expansion of embodiment]
In each above embodiment, utilize controller 7 to obtain the concrete structure of load power 34 as being intended to, be that example is told about with the change of calculating the electric power of supplying with common bus 9.But be not limited thereto, the instruction input 70 that for example can assign according to the rotative speed 45 and the operator of electrical motor 30～33, calculated load power 34 obtains and above-mentioned same action effect.
[0049]
For example: the rotative speed 45 of electrical motor 30～33 has confidential relation with power consumption separately, can represent as the acting characteristic of each electrical motor 30～33.In addition, these rotative speeds 45 equate with the frequency of the alternating current of each inverter 41～44 output.So, in controller 7, the acting characteristic of each electrical motor 30～33 that can preserve in advance with reference to memory device is obtained and the rotative speed 45 cooresponding consumption electric power of obtaining from each inverter 41～44, according to these summations that consumes electric power, calculate load power 34.
[0050]
In addition, each action of hoisting cranes such as the walking of lifting of goods, stand and side travel needs intrinsic load power 34 respectively, both relations can be grasped as fixing relation to a certain degree.Like this, can in the memory device of controller 7, preserve the corresponding relation that hoisting crane moves and is somebody's turn to do the required load power 34 of action in advance, operation input according to instruction input 70, with reference to above-mentioned corresponding relation, according to each required hoisting crane action of the crane operation of operation input, obtain load power 34,, calculate the required load power 34 of crane operation of operation input according to their summation.
[0051]
In addition, in each embodiment, both situations consistent with Pth such as threshold value and the generation outage threshold value of generating electricity with beginning of using when beginning/generation outage of judging sustainer, main engine power generation assembly 1 are example, tell about.But be not limited thereto.Both values also can be different.For example in Fig. 4, if after being higher than the threshold value ground setting ground generation outage threshold value that begins to generate electricity, it is corresponding just can to begin reduction with the load power 34 from moment T3, near the moment T4 time, make 1 generation outage of sustainer, main engine power generation assembly, can correspondingly cut down operating cost.
[0052]
In addition, also with good grounds running instruction 10 from controller 7 is when making the 1 beginning/generation outage of sustainer, main engine power generation assembly, specifically, make the method that diesel motor 11 begins/shut down and make alternating current generator 12 begin/stop the method for excitation, can use wherein some.In addition, too for assistant engine power generation assembly 2.
[0053]
For example adopt make the method that diesel motor 11 begins/shut down after, during generation outage, diesel motor just stops fully.Like this, although can cut down operating cost effectively, because playing to begin to supply with from the running that begins to generate electricity instruction produces some till the main supply power 14 and lag behind, so this method is suitable for the smaller situation of the scale of sustainer, main engine power generation assembly 1.
[0054]
On the other hand, after employing made alternating current generator 12 begin/stop the method for excitation, during generation outage, diesel motor not exclusively stopped, and became the idling conditions (unloaded slew mode) that does not have load.Like this, lag behind although play to begin to supply with to produce hardly till the main supply power 14 from the running that begins to generate electricity instruction, but because during generation outage, need with the more cooresponding operating costs of the idle running of diesel motor, so this method is suitable for the bigger situation of the scale of sustainer, main engine power generation assembly 1.
Claims (10)
1, a kind of crane equipment possesses:
Sustainer, main engine power generation assembly, this sustainer, main engine power generation assembly are supplied with the electric power that adopts engine drive to send to common bus;
Assistant engine power generation assembly, this assistant engine power generation assembly are supplied with the electric power that adopts engine drive to send to described common bus;
The power converter that electrical motor, this electrical motor will be supplied with described common bus becomes the propulsive effort that is used for handling goods;
Controller, this controller instruct to the running whether described sustainer, main engine power generation assembly output expression generates electricity according at least one the electric power state of supply to described common bus in described sustainer, main engine power generation assembly and the described assistant engine power generation assembly.
2, crane equipment as claimed in claim 1, it is characterized in that: described controller, possesses Generation Control portion, this Generation Control portion is according to the situation from the electric power undersupply of described assistant engine power generation assembly for described common bus, the running instruction that begins to generate electricity to described sustainer, main engine power generation assembly output expression.
3, crane equipment as claimed in claim 2, it is characterized in that: described controller, and then possesses the power supply situation confirmation unit, this power supply situation confirmation unit is some according in the rotative speed of the change of the electric power of supplying with described common bus, described electrical motor and operator's the input instruction at least, detects the deficiency that electric power is supplied with.
4, crane equipment as claimed in claim 1, it is characterized in that: described controller, possesses Generation Control portion, this Generation Control portion is according to the situation from the electric power excess supply of described sustainer, main engine power generation assembly and described assistant engine power generation assembly for described common bus, to the running instruction of described sustainer, main engine power generation assembly output expression generation outage.
5, crane equipment as claimed in claim 3, it is characterized in that: described Generation Control portion, and then possesses the power supply situation confirmation unit, this power supply situation confirmation unit is some according in the rotative speed of the change of the electric power of supplying with described common bus, described electrical motor and operator's the input instruction at least, detects the surplus that electric power is supplied with.
6, crane equipment as claimed in claim 1, it is characterized in that: described controller, possesses Generation Control portion, this Generation Control portion makes the running instruction of described assistant engine power generation assembly generation outage to described assistant engine power generation assembly output expression during described sustainer, main engine power generation assembly power supply.
7, crane equipment as claimed in claim 1, it is characterized in that: described controller, possesses Generation Control portion, this Generation Control portion for described common bus from the electric power excess supply of described sustainer, main engine power generation assembly and described assistant engine power generation assembly the time, confirm this surplus after all continuing during the supervision of whole regulation, to the running instruction of described sustainer, main engine power generation assembly output expression generation outage.
8, crane equipment as claimed in claim 1, it is characterized in that: and then possess electrical storage device, this electrical storage device according to for described common bus from least one the electric power state of supply in described sustainer, main engine power generation assembly and the described assistant engine power generation assembly, described common bus is discharged and recharged.
9, crane equipment as claimed in claim 1, it is characterized in that: and then possess electrical storage device, this electrical storage device is lower than the discharge threshold of regulation when following at the vdc of described common bus, supply with the direct current (DC) of being put aside to described common bus, when the DC voltage rising of described common bus is above to the charge threshold of regulation, with direct current (DC) from described common bus to battery charge.
10, crane equipment as claimed in claim 1 is characterized in that: and then possess inverter, this inverter is connected between described common bus and the described electrical motor, the direct current (DC) of described common bus is transformed into alternating current after, supply with described electrical motor.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007095693A JP5173228B2 (en) | 2007-03-30 | 2007-03-30 | Crane equipment |
| JP095693/2007 | 2007-03-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101652310A true CN101652310A (en) | 2010-02-17 |
Family
ID=39830989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200880011045A Pending CN101652310A (en) | 2007-03-30 | 2008-03-31 | Crane device |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP5173228B2 (en) |
| CN (1) | CN101652310A (en) |
| WO (1) | WO2008123512A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105668415A (en) * | 2016-04-01 | 2016-06-15 | 上海振华重工(集团)股份有限公司 | Power supply system and power supply switching method of container gantry crane |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5164042B2 (en) * | 2008-11-13 | 2013-03-13 | 西芝電機株式会社 | Ship energy system |
| JP6441520B1 (en) * | 2018-03-14 | 2018-12-19 | 株式会社日立パワーソリューションズ | Power supply and demand system, control device, and power supply and demand method |
| JPWO2023007701A1 (en) * | 2021-07-30 | 2023-02-02 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07123336B2 (en) * | 1991-09-09 | 1995-12-25 | 西芝電機株式会社 | Operation control device for private power generation equipment |
| JPH09295793A (en) * | 1996-05-07 | 1997-11-18 | Mitsubishi Heavy Ind Ltd | Motor driven type cargo handling device |
| JP4124855B2 (en) * | 1998-03-16 | 2008-07-23 | 東芝三菱電機産業システム株式会社 | Ship power supply |
| JP2001163574A (en) * | 1999-12-10 | 2001-06-19 | Mitsubishi Heavy Ind Ltd | Crane device |
| JP2002345149A (en) * | 2001-05-17 | 2002-11-29 | Ennet Corp | Surplus power management system |
| JP2004017805A (en) * | 2002-06-17 | 2004-01-22 | Taiheiyo Cement Corp | Power generation facility in electric propulsion ship |
| JP7123336B2 (en) * | 2018-06-25 | 2022-08-23 | Dic株式会社 | Resin compositions, moldings, laminates, coating materials and adhesives |
-
2007
- 2007-03-30 JP JP2007095693A patent/JP5173228B2/en active Active
-
2008
- 2008-03-31 CN CN200880011045A patent/CN101652310A/en active Pending
- 2008-03-31 WO PCT/JP2008/056418 patent/WO2008123512A1/en active Application Filing
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105668415A (en) * | 2016-04-01 | 2016-06-15 | 上海振华重工(集团)股份有限公司 | Power supply system and power supply switching method of container gantry crane |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2008123512A1 (en) | 2008-10-16 |
| JP2008254828A (en) | 2008-10-23 |
| JP5173228B2 (en) | 2013-04-03 |
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Open date: 20100217 |