CN202004500U - Auxiliary power supply for crane - Google Patents
Auxiliary power supply for crane Download PDFInfo
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- CN202004500U CN202004500U CN2011201431957U CN201120143195U CN202004500U CN 202004500 U CN202004500 U CN 202004500U CN 2011201431957 U CN2011201431957 U CN 2011201431957U CN 201120143195 U CN201120143195 U CN 201120143195U CN 202004500 U CN202004500 U CN 202004500U
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Abstract
The utility model provides an auxiliary power supply for a crane. The auxiliary power supply comprises storage batteries [E1, E2]. Output electrodes of the storage batteries are connected with a DC bus [DB]. A current inversion device is arranged between the storage batteries and the DC bus. When the current inversion device is a one-way current inversion device such as a diode [D], the storage batteries can serve as standby power supplies to eliminate an unsafe state or execute other operations when an external power grid is broken, and also can provide instantaneous heavy current for the DC bus. When the current inversion device is a two-way DC/C current transformer [DD], braking energy can be recycled. Compared with the prior art, the auxiliary power supply comprises the storage batteries with a plurality of purposes, can weaken the frequent violate fluctuations of current in the DC bus when the crane is operated, also can recycle the braking energy into the storage batteries, and is favorable for improving the working conditions of the power grid and electrical equipment, thereby prolonging the service life of the equipment, improving the power utilization efficiency of the equipment and also increasing the utilization rate of energy sources..
Description
Technical field
The utility model relates to a kind of accessory power supply of crane of crane accessory power supply, especially vertical lift, belong to generating in the electricity, power transformation or distribution technique field, also belong to crane technical field in the transportation.
Background technology
The alleged crane of the utility model is various gate-types, bridge-type, arm-type, derrick crane and lift, is that the toter of delivery people, goods is made the plant equipment of vertical lift.Preceding four class cranes all have to be made toter make the lifting motor of vertical displacement and makes the translation motor (comprising arm-type arm electric rotating machine and tower tower electric rotating machine) of horizontal displacement; Lift then only has lifting motor.At present, along with the progress of motor technology, be the speed of lifting, point-to-point speed or other attaching operations of control toter, said lifting motor, translation motor and other motors have all adopted variable-frequency motor.Therefore, the primary structure of main power supply is that dc bus is arranged in the described all kinds of crane, each power motor is connected on the dc bus through the load frequency converter, and dc bus connects AC power input electric connection through AC/DC convertor, AC power input electric connection is connected with external electrical network, and said external electrical network is civil power or civil power become electric power source after joining.
When toter vertically descends, be the decrease speed of control toter, motor must be in brake running state, and the potential energy of toter will be converted into the electric energy of variable-frequency motor under this state.For transforming these electric energy the electric energy of load resistance with the output of consumption absorption motor had been installed on the power line of motor all, but clearly, lot of energy has been wasted in the past.Therefore, produced the technology that this braking energy is the accessory power supply of crane that reclaims, as Chinese utility model patent ZL CN200820121249.8 " elevator energy-saving reverse device ".This patent introduction be that " a kind of elevator energy-saving reverse device includes a motor; One frequency converter is used to drag described machine operation, and the three-phase input end of the three-phase output end of this frequency converter and described motor links to each other; It is characterized in that: also include an inverter, the electric energy regeneration inversion that produces under the electric power generation state feeds back in the electrical network, described inverter includes three-phase output end, earth terminal and positive and negative input, wherein, the three-phase output end of this inverter links to each other with the three-phase input end of described frequency converter is corresponding, the corresponding respectively positive and negative end that connects described frequency changer direct current bus of the positive and negative input of this inverter." this technology realized the recovery braking energy, but the energy that it reclaimed is back in the AC power again, might pollute electrical network, and the energy of this recovery still can be wasted when energy is sufficient in the AC power.
On the other hand, as everyone knows, motor need absorb transient high-current when stating with load is arranged, this makes it cause the power supply of electrical network not steady when work, damage the efficient of electrical network and reduction AC/DC convertor easily, and when mains supply reaches the electricity consumption requirement, can not cause adverse effect other electric equipments on a motor or the bridge.
In addition, crane needs because of operation when work or fortuitous event might open circuit with being connected of external electrical network, and at this moment stand-by power supply is preferably arranged, and Ru Changqiao (is a rubbertyred container gantry crane, also can abbreviate tyre crane as, be a kind of in the gantry crane) the transition power supply.Because inconvenience connected external ac power source when a bridge was cut to,, a bridge comes to provide electric power for the motor of cutting to so also needing an accessory power supply as the transition power supply.The transition power supply is transition motor power supply except that lifting motor and translation motor, that tire on the drive wheels rotated when whole field bridge moved on the bridge of field.The vehicle-mounted transition power supply of field bridge that in the past used is a diesel engine generator, but along with the influence to environmental protection of the atrophy gradually of petroleum resources and internal combustion engine becomes increasingly conspicuous, substitutes the technical scheme of diesel engine generator to overcome described defective so had with storage battery.As Chinese utility model patent ZL200820226349.7 " tyre crane cut to street with static miniature power station ", " described miniature power station is arranged on the tyre crane; its power supply terminal connects the electric connection of tyre crane; be provided with electric energy storage device in described miniature power station; when tyre crane connects power supply rail by electric connection inside, and described electric energy storage device receives from the electric energy of power supply rail by power supply terminal and stores; When tyre crane was cut to the street, described electric energy storage device exported electric energy stored to tyre crane by power supply terminal, to drive its operation." but wherein said storage battery only is used for transition, and purposes is single.
Summary of the invention
At above-mentioned deficiency, the utility model is exactly that a kind of new crane accessory power supply will be provided, this power supply is main element with the storage battery, and possess and reclaim braking energy and/or transition motor power (stand-by power supply when opening circuit with external electrical network) is provided, and the ability of the transient high-current demand during additional electric motor starting.
The crane accessory power supply that the utility model provides, there is its output electrode of storage battery to be connected with dc bus, the electric current non-return device is arranged between storage battery and the dc bus, the charging circuit of storage battery is connected with crane AC power input electric connection, between the charging circuit of said storage battery and the AC power input electric connection charge switch is arranged, also has discharge switch between storage battery and the dc bus, charge switch is an off-state during crane job, discharge switch is an off-state during charging, and the conducting direction of said electric current non-return device is to point to dc bus from storage battery.
The crane accessory power supply that the utility model provides, access storage battery in parallel between alternating current input electric connection and dc bus with AC/DC convertor, between storage battery and the dc bus and with alternating current input electric connection between switch is all arranged, and to also have conducting direction between storage battery and dc bus be electric current non-return device from storage battery sensing dc bus.So, the utility model can be controlled storage battery by switch and all can discharge at any time and the electric energy on the dc bus is refluxed to storage battery.Make storage battery can use stand-by power supply as to eliminate crane unsafe condition of living in when not only externally electrical network contingency opens circuit, when cutting to, bridge perhaps on the scene provides electric power to the transition motor, also can provide transient high-current to dc bus when lifting motor or translation motor startup, this storage battery can be referred to as offset supply for this reason.Compared with prior art, the operation that storage battery in the utility model possesses no external electrical network when supporting comprises emergency power and to multiple uses such as dc bus output transient high-currents, and the frequent fluctuation of the operating current that crane is also made motor during because of lifting operation can be weakened by storage battery, help improving the condition of work of motor and other electric equipments on electrical network, the crane, thereby improved equipment life and power consumption efficiency.
Based on same technical conceive, the crane accessory power supply that another kind of the utility model provides, there is its output electrode of storage battery to be connected with dc bus, the electric current non-return device is arranged between storage battery and the dc bus, said electric current non-return device is two-way DC/DC current transformer, the conducting direction of two-way DC/DC current transformer is: point to dc bus from storage battery when the current potential of dc bus is lower than the equalizing voltage of two-way DC/DC current transformer, points to storage battery from dc bus when the current potential of dc bus is higher than the equalizing voltage of two-way DC/DC current transformer; The maximum electric weight that said battery capacity is transformed greater than the lifting motor braking energy that is connected on the dc bus.
The crane accessory power supply that the utility model provides, access storage battery in parallel with AC/DC convertor between alternating current input electric connection and dc bus also has two-way DC/DC current transformer between storage battery and the dc bus.And the conducting direction that the equalizing voltage value of two-way DC/DC current transformer is determined is an index with the difference of current potential on the dc bus and equalizing voltage value, when this difference is that the timing storage battery only charges, when this difference is that storage battery only discharges when bearing.Descending at toter makes lifting motor carry out running under braking and when potential energy is converted to electric energy, dc bus to charge in batteries to reclaim the energy.This equalizing voltage is the voltage the when electric current on the dc bus is steady in the crane loading process, and when direct current bus bar position during less than this equalizing voltage value, conducting direction is to point to dc bus from storage battery; And the direct current bus bar position is during greater than this equalizing voltage value, and conducting direction points to storage battery from dc bus.The electric energy that is dc bus refluxes and can only (when the lifting motor of crane is in generating state) take place when dc bus has electric energy input when steady above lifting process electric current to storage battery, and battery discharging when not enough of dc bus electric energy, this storage battery can be referred to as energy-conservation storage battery for this reason.Compared with prior art, the utility model is recovered in braking energy in the storage battery, does not have with external electrical network to relate to, and has both ensured the higher braking energy recovery utilization rate of the not contaminated also assurance of electrical network.Simultaneously, rely on the two-way non-return effect of two-way DC/DC current transformer, storage battery also can not provide electric power to dc bus when not being connected with external electrical network, can provide transient high-current to dc bus when being connected with external electrical network yet.
Said storage battery also is connected with crane AC power input electric connection through charging circuit, between the charging circuit of storage battery and the AC power input electric connection charge switch is arranged, between storage battery and the dc bus discharge switch is arranged, charge switch is an off-state during operation, and discharge switch is an off-state during charging.Storage battery has charging charging can storage battery being safeguarded by charging, and makes storage battery have certain electric weight to store.
In conjunction with above-mentioned two kinds of technical schemes, the crane accessory power supply that the utility model provides, there are two group storage batteries to be connected with dc bus with its output electrode respectively, the electric current non-return device is respectively arranged between two group storage batteries and the dc bus, wherein the conducting direction of the electric current non-return device between a group storage battery and the dc bus is to point to dc bus from storage battery, and the electric current non-return device between another group storage battery and the dc bus is two-way DC/DC current transformer; The charging circuit of storage battery is connected with crane AC power input electric connection, between the charging circuit of said storage battery and the AC power input electric connection charge switch is arranged, also has discharge switch between storage battery and the dc bus, charge switch is an off-state during crane job, and discharge switch is an off-state during charging.
All the time can not be fully loaded with owing to reclaim the batteries of braking energy, otherwise will waste, so be greater than the actual needs capacity as the capacity of the energy-conservation batteries that reclaims braking energy for issuable unnecessary braking energy.If bear energy-conservation and compensation task simultaneously, then owing to the operating mode under two kinds of tasks differs greatly, for even running makes needed battery capacity very huge with single group storage battery.Therefore batteries is divided into two groups, when being controlled to operation by switch, the batteries that wherein connects dc bus with two-way DC/DC current transformer uses, and another organizes use when only doing standby (transition), then help reducing cost, but and the structure of simplified control circuit.
Said two group storage batteries are to wait capacity, and the intersection commutation circuit is arranged between two group storage batteries, promptly two group storage batteries connect through diverter switch before connecting the electric current non-return device, be that two electric current non-return devices and storage battery all are connected to two group storage batteries by diverter switch separately, two diverter switch interlocks that the electric current non-return device is preceding.The task of recuperated energy and additional transient high-current when making two group storage batteries alternately bear operation, the fatigue of that group storage battery that uses in the time of can slowing down operation, the working life of raising and balance two group storage batteries.
The charging circuit of said storage battery is connected conducting direction for pointing to from storage battery between the electric current non-return device and diverter switch of dc bus, promptly two group storage batteries are connected with charging circuit by above-mentioned diverter switch, make two group storage batteries use a cover charging circuit to charge and safeguards simultaneously, to save hardware input and simplification software and hardware structure.
The crane accessory power supply that the utility model provides, used storage battery are plumbous carbon batteries, are organically combined by lead acid accumulator and ultracapacitor to form, and reclaim ability to improve braking energy.
Description of drawings
Fig. 1 is the electrical schematic diagram of the utility model one embodiment, among the figure: AD, AD1-AC/DC convertor, AS-alternating current input electric connection, BP1, the BPN-frequency converter of loading, the D-diode, the DB-dc bus, E1-batteries, M1, MN-variable-frequency motor, MC1-pulse charging apparatus, Q, Q1, Q21, QF1, QFN-air switch;
Fig. 2 is the electrical schematic diagram of another embodiment of the utility model, among the figure: AD, AD2-AC/DC convertor, AS-alternating current input electric connection, BP1, the BPN-frequency converter of loading, the DB-dc bus, the two-way DC/DC current transformer of DD-, the E2-batteries, M1, MN-variable-frequency motor, the MC2-pulse charging apparatus, Q, Q2, Q22, QF1, QFN-air switch;
Fig. 3 is the electrical schematic diagram of the another embodiment of the utility model, among the figure: AD, AD1, AD2-AC/DC convertor, AS, AS1-alternating current input electric connection, BP1, the BPN-frequency converter of loading, the D-diode, the DB-dc bus, the two-way DC/DC current transformer of DD-, E1, E2-batteries, M1, the MN-variable-frequency motor, MC1, MC2-pulse charging apparatus, Q1, Q2, Q3, Q4, Q21, Q22, QF1, QFN-air switch;
Fig. 4 is the utility model electrical schematic diagram of an embodiment again, among the figure: AD, AD1-AC/DC convertor, AS, AS1-alternating current input electric connection, BP1, the BPN-frequency converter of loading, the D-diode, the DB-dc bus, the two-way DC/DC current transformer of DD-, E1, E2-batteries, M1, the MN-variable-frequency motor, MC1-pulse charging apparatus, Q1, Q2, Q3, Q4, Q21, Q22, QF1, QFN-air switch.
Embodiment
1, as shown in Figure 1, dc bus DB is arranged in the crane circuit, each variable-frequency motor M1MN is connected on the dc bus through separately load frequency converter B P1BPN and air switch QF1QFN on the crane, be that each machine operation electric power all obtains through the load frequency converter, and motor speed is by Frequency Converter Control.And dc bus is connected with place, place electrical network with alternating current input electric connection AS behind AC/DC convertor AD, air switch Q.Behind alternating current input electric connection, also told in order to circuit, formed by AC/DC convertor AD1 and pulse charging apparatus MC1 to charge in batteries through charge switch Q1.Charging circuit is connected to storage battery E1, and storage battery is connected to dc bus through discharge switch Q21 again.Also be provided with the electric current non-return device between storage battery and dc bus, this electric current non-return device is diode D.Also can select electronic switching elements such as thyristor, controllable silicon or other electronic switching circuits as unidirectional electric current non-return device.
Be controlled at charge switch and charge when crane stops operation, and charging circuit disconnects when operation.Make the discharge switch conducting during crane job, then storage battery is in to DC bus powered state, and storage battery just discharges to dc bus when needing electric energy supplement on the dc bus.Therefore, when crane transition, storage battery discharges to dc bus equally when motor starting under load of dc bus up-conversion or sudden load increase.Electric energy when the setting of electric current non-return device makes bridge operation on the scene on the dc bus can not influence the operation electricity consumption to charge in batteries, has promptly isolated the charging and discharging of accumulator circuit.
2, as shown in Figure 2, dc bus DB is arranged in the crane circuit, each variable-frequency motor M1MN is connected on the dc bus through separately load frequency converter B P1BPN and air switch QF1QFN on the crane, be that each machine operation electric power all obtains through the load frequency converter, and motor speed is by Frequency Converter Control.And dc bus is connected with place, place electrical network with alternating current input electric connection AS behind AC/DC convertor AD, air switch Q.Behind alternating current input electric connection, also told in order to circuit, formed by AC/DC convertor AD2 and pulse charging apparatus MC2 to charge in batteries through charge switch Q2.Charging circuit is connected to storage battery E2, and storage battery is connected to dc bus through discharge switch Q22 again.Also be provided with the electric current non-return device between storage battery and dc bus, this electric current non-return device is two-way DC/DC current transformer DD.
Be controlled at charge switch and safeguard when crane stops operation, and charging circuit disconnects when operation.Make the discharge switch conducting during crane job, then storage battery relies on two-way DC/DC current transformer, is the state that the boundary reclaims power supply when not enough of electric energy and dc bus electric energy when being in the dc bus electric energy and overflowing with the equalizing voltage value of setting on the two-way DC/DC current transformer.
The crane that this example is applied to fix especially only has port bridge, the lift (elevator) of vertical lift, as a kind of technical scheme of energy recuperation.
3, as shown in Figure 3, be the power circuit of a kind of bridge, dc bus DB is arranged, load variable-frequency motor M1MN is connected on the dc bus by load frequency converter B P1BPN and air switch QF1QFN separately.Be useful on the alternating current input electric connection AS that connects the electrical network connection of place, place and be connected on the AC/DC convertor AD, the DC leadout of this AC/DC convertor is connected on the dc bus through air switch Q10.The AC power of electrical network is powered to each motor by the load frequency converter behind ac-dc conversion during operation.
Be equipped with two group storage battery E1, E2 on the bridge of field, they are connected on the alternating current input electric connection AS1 by pulse charging apparatus MC1, MC2 and AC/DC convertor AD1, AD2, air switch Q1, Q2 separately.Can be when this alternating current input electric connection is connected with electrical network by air switch control charging object.Alternating current input electric connection AS and alternating current input electric connection AS1 can be that two plugs also can be same plugs.
Be connected to double-pole four through air switch Q21, diode D on the dc bus and throw air switch Q3, go back air switch Q22 simultaneously, two-way DC/DC current transformer DD is connected to double-pole four and throws air switch Q4, two double-poles four are thrown the air switch interlock, are connected with the positive pole of storage battery with anode one end when wherein diode is installed.And also being connected respectively to aforementioned two double-poles four, two group storage battery groups throw air switch.Be that each double-pole four is thrown air switch and all can be switched between two group storage batteries, make to form between two group storage batteries to intersect and switch, throw the exchange of air switch may command two group storage batteries by two double-poles four of interlock and use.
The two group storage battery capacity that this example was equipped with respectively are 75Ah/12V.Bridge is on the scene then and there when carrying out operation, and first group storage battery is in floating charge fullcharging electricity condition, is the transition energy reserve.Second group storage battery then be in can high current charge-discharge half state-of-charge, when lifting, can discharge transient current up to 300A, can receive stabling current during decline up to 150A.Between this Battery pack and dc bus, finish the conversion of energy by the two-way DC/DC current transformer of a 100kW.When bridge is cut to work then and there, two Battery packs provide required whole energy jointly, can satisfy the requirement of continuous 2 transitions (each 20min), after double transition, need two Battery packs are carried out boost charge, can satisfy the once requirement of transition after charging at least 2 hours again.For to the battery consideration in useful life, two Battery packs week about mutually transposing use.
With manually or utilize supervising device automatically power transfer device to be controlled, to reach the purpose of load balance.Is example as transition power supply, E2 as energy-saving electric power with E1.During operation when suspension hook promotes container the second group storage battery E2 provide electric current as working power to load by two-way DC/DC current transformer.When suspension hook descends with container, second group storage battery also by two-way DC/DC current transformer as the accumulation power supply stored energy.According to 7000 calculating of lifting in every month, every month minimum 2100 degree that economize on electricity.Simultaneously, batteries has also been born a part of load during operation, both helped eliminating the excessive loss of being brought for the prime transformer of back level load, can improve the utilance of battery pack again, and can reduce whole audience electric power system Capacity design grade, to reach the effect that improves energy use efficiency, energy-saving and emission-reduction.During transition, air switch Q21, Q22 is closed, and then two group storage batteries to the power supply of transition motor, also can disconnect air switch Q22 simultaneously, only use group storage battery transition.
This example can realize the configuration optimization of bridge power supply when normal operation, transition, it one is to give transition motor normal power supply by batteries by frequency converter finishing when transition, and imports for the control loop of a bridge and the direct current that the partial illumination circuit provides inverter; The 2nd, provide all or part of suspender to lift by crane the operating current of moment by batteries; The 3rd, when carrying out slinging work, provide the lifting energy of part with the form of shallow discharge by batteries; The 4th, when lifted weight descends, the electric energy that potential energy changes into is reclaimed and storage power by batteries.
4, as shown in Figure 4, still a bridge power circuit has dc bus DB, and load variable-frequency motor M1MN is connected on the dc bus by load frequency converter B P1BPN and air switch QF1QFN separately.Be useful on the alternating current input electric connection AS that connects the electrical network connection of place, place and be connected on the AC/DC convertor AD, the DC leadout of this AC/DC convertor is connected on the dc bus.The AC power of electrical network is powered to each motor by the load frequency converter behind ac-dc conversion during operation.
Field bridge dc bus is connected double-pole four through dpdt double-pole double-throw (DPDT) air switch Q21 with diode D and throws air switch Q3, is connected with the positive pole of storage battery with anode one end when wherein diode is installed.Diode and this double-pole four are thrown between the air switch and also are connected on the alternating current input electric connection AS1 through charging circuit and air switch Q1, and charging circuit is made up of pulse charging apparatus MC1 and AC/DC convertor AD1.Field bridge dc bus also connects double-pole four through dpdt double-pole double-throw (DPDT) air switch Q22 through two-way DC/DC current transformer DD and throws air switch Q4.Said two double-poles four are thrown the air switch interlock.
Being equipped with two group storage battery E1, E2 on the bridge of field, respectively is the plumbous carbon batteries of 48 75Ah/12V.Two storage batterys all are connected respectively to two double-poles four and throw air switch, make two group storage battery electrodes throw air switch through double-pole four and exchange use.
The battery side input voltage of this routine two-way DC/DC current transformer is 500-715V, and the battery side output voltage is 450-750V, and the bus bar side input voltage is 450 ~ 750V, and the bus bar side output voltage is 500 ~ 715V.Two group storage batteries can regularly switch, and charging and maintenance are always carried out the group storage battery that the transition electrical discharge wire connects, or save a cover charging device and simplify circuit and control.
Claims (7)
1. crane accessory power supply, there is its output electrode of storage battery to be connected with dc bus, it is characterized in that the electric current non-return device is arranged between storage battery and the dc bus, the charging circuit of storage battery is connected with crane AC power input electric connection, between the charging circuit of said storage battery and the AC power input electric connection charge switch is arranged, also has discharge switch between storage battery and the dc bus, charge switch is an off-state during crane job, discharge switch is an off-state during charging, and the conducting direction of said electric current non-return device is to point to dc bus from storage battery.
2. crane accessory power supply, there is its output electrode of storage battery to be connected with dc bus, it is characterized in that the electric current non-return device is arranged between storage battery and the dc bus, said electric current non-return device is two-way DC/DC current transformer, the conducting direction of two-way DC/DC current transformer is: point to dc bus from storage battery when the current potential of dc bus is lower than the equalizing voltage of two-way DC/DC current transformer, points to storage battery from dc bus when the current potential of dc bus is higher than the equalizing voltage of two-way DC/DC current transformer; The maximum electric weight that said battery capacity is transformed greater than the lifting motor braking energy that is connected on the dc bus.
3. crane accessory power supply as claimed in claim 2, it is characterized in that said storage battery also is connected with crane AC power input electric connection through charging circuit, between the charging circuit of storage battery and the AC power input electric connection charge switch is arranged, between storage battery and the dc bus discharge switch is arranged, charge switch is an off-state during operation, and discharge switch is an off-state during charging.
4. crane accessory power supply, it is characterized in that having two group storage batteries to be connected with dc bus with its output electrode respectively, the electric current non-return device is respectively arranged between two group storage batteries and the dc bus, wherein the conducting direction of the electric current non-return device between a group storage battery and the dc bus is to point to dc bus from storage battery, and the electric current non-return device between another group storage battery and the dc bus is two-way DC/DC current transformer; The charging circuit of storage battery is connected with crane AC power input electric connection, between the charging circuit of said storage battery and the AC power input electric connection charge switch is arranged, also has discharge switch between storage battery and the dc bus, charge switch is an off-state during crane job, and discharge switch is an off-state during charging.
5. crane accessory power supply as claimed in claim 4, it is characterized in that said two group storage batteries are to wait capacity, and the intersection commutation circuit is arranged between two group storage batteries, promptly two group storage batteries connect through diverter switch before connecting the electric current non-return device, be that two electric current non-return devices and storage battery all are connected to two group storage batteries by diverter switch separately, two diverter switch interlocks that the electric current non-return device is preceding.
6. crane accessory power supply as claimed in claim 5 is characterized in that the charging circuit of said storage battery is connected conducting direction for pointing between the electric current non-return device and diverter switch of dc bus from storage battery.
7. as claim 1 or 2 or 3 or 4 or 5 or 6 described crane accessory power supplys, it is characterized in that used storage battery is plumbous carbon battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201431957U CN202004500U (en) | 2011-05-09 | 2011-05-09 | Auxiliary power supply for crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201431957U CN202004500U (en) | 2011-05-09 | 2011-05-09 | Auxiliary power supply for crane |
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| CN202004500U true CN202004500U (en) | 2011-10-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011201431957U Expired - Fee Related CN202004500U (en) | 2011-05-09 | 2011-05-09 | Auxiliary power supply for crane |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102718146A (en) * | 2012-06-20 | 2012-10-10 | 三一集团有限公司 | Electrical system of bridge crane and energy saving method of bridge crane |
| CN103204436A (en) * | 2013-04-09 | 2013-07-17 | 江苏万富安机械有限公司 | Emergency brake circuit of starter |
| CN107732968A (en) * | 2017-11-09 | 2018-02-23 | 三海洋重工有限公司 | Gantry crane crane and lifting unit |
| CN113659666A (en) * | 2021-08-07 | 2021-11-16 | 苏州程控自动化有限公司 | Frequency converter energy recovery system and method |
| EP4056516A1 (en) | 2021-03-10 | 2022-09-14 | Manitowoc Crane Group France | Method for managing the power supply of a crane from a primary source and a rechargeable secondary source |
-
2011
- 2011-05-09 CN CN2011201431957U patent/CN202004500U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102718146A (en) * | 2012-06-20 | 2012-10-10 | 三一集团有限公司 | Electrical system of bridge crane and energy saving method of bridge crane |
| CN103204436A (en) * | 2013-04-09 | 2013-07-17 | 江苏万富安机械有限公司 | Emergency brake circuit of starter |
| CN103204436B (en) * | 2013-04-09 | 2014-08-20 | 江苏万富安机械有限公司 | Emergency brake circuit of starter |
| CN107732968A (en) * | 2017-11-09 | 2018-02-23 | 三海洋重工有限公司 | Gantry crane crane and lifting unit |
| EP4056516A1 (en) | 2021-03-10 | 2022-09-14 | Manitowoc Crane Group France | Method for managing the power supply of a crane from a primary source and a rechargeable secondary source |
| FR3120618A1 (en) | 2021-03-10 | 2022-09-16 | Manitowoc Crane Group France | Method for managing the electrical power supply of a crane from a primary source and a rechargeable secondary source |
| US11916433B2 (en) | 2021-03-10 | 2024-02-27 | Manitowoc Crane Group France | Method for managing the electric power supply of a crane from a primary source and from a rechargeable secondary source |
| CN113659666A (en) * | 2021-08-07 | 2021-11-16 | 苏州程控自动化有限公司 | Frequency converter energy recovery system and method |
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