JP2011162287A - Power feeding device and tire type gantry crane including the same - Google Patents

Power feeding device and tire type gantry crane including the same Download PDF

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JP2011162287A
JP2011162287A JP2010025041A JP2010025041A JP2011162287A JP 2011162287 A JP2011162287 A JP 2011162287A JP 2010025041 A JP2010025041 A JP 2010025041A JP 2010025041 A JP2010025041 A JP 2010025041A JP 2011162287 A JP2011162287 A JP 2011162287A
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storage battery
power
power supply
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Nobuo Yoshioka
伸郎 吉岡
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Mitsubishi Heavy Industries Ltd
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Priority to JP2010025041A priority Critical patent/JP2011162287A/en
Priority to EP10171615A priority patent/EP2354075A1/en
Priority to KR1020100076176A priority patent/KR101214295B1/en
Priority to CN201010249292.4A priority patent/CN102148513B/en
Priority to SG2011004777A priority patent/SG173954A1/en
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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
    • B66C13/12—Arrangements of means for transmitting pneumatic, hydraulic, or electric power to movable parts of devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C19/00—Cranes comprising trolleys or crabs running on fixed or movable bridges or gantries
    • B66C19/007—Cranes comprising trolleys or crabs running on fixed or movable bridges or gantries for containers

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  • Mechanical Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a power feeding device capable of realizing a full battery RTG (Rubber Tired Gantry Crane) and a tire type gantry crane including the same. <P>SOLUTION: This power feeding device includes two storage batteries 45 and 46, and supplies electric power to a load of an RTG 18 by one (the storage battery 45 or the storage battery 46) of the two storage batteries 45 and 46, wherein the other storage battery 46 (or the storage battery 45) is connected to a storage battery power feeding means (such as a noncontact type power feeding system) and put in a chargeable state of charging supply electric power from the storage battery power feeding means, and simultaneously allows discharge of the storage battery 45 (or the storage battery 46) of a discharge state and charge of the storage battery 46 (or the storage battery 45) of the chargeable state. and comprises a storage battery switching means (storage battery switching switches 47 and 48 and a control device 77) for repeatedly switching the storage battery 46 (or the storage battery 45) of the chargeable state to the discharging state and at the same time for switching the storage battery 45 (or the storage battery 46) of the discharging state to the chargeable state. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

本発明は給電装置及びこれを備えたタイヤ式門型クレーンに関する。   The present invention relates to a power feeding device and a tire type portal crane including the same.

港湾のコンテナターミナルにおけるコンテナヤード（図１参照：詳細後述）では、タイヤ式門型クレーン（Rubber Tired Gantry Crane：以後、ＲＴＧとも称する）によってコンテナの荷役作業が行なわれている。ＲＴＧはタイヤを駆動する走行用電動機、コンテナの巻上げ巻下げ（昇降）を行なう巻上げ用電動機、トロリを横行させる横行用電動機などを、負荷として有している。   In a container yard at a container terminal in a harbor (see FIG. 1; details will be described later), a container handling operation is performed by a tire-type crane (Rubber Tired Gantry Crane: hereinafter also referred to as RTG). The RTG has, as loads, a traveling motor that drives the tire, a winding motor that winds and lowers (lifts) the container, a traverse motor that traverses the trolley, and the like.

かかるＲＴＧには、近年盛んに製品化が進められているハイブリッドＲＴＧがある。
このハイブリッドＲＴＧでは、走行用や巻上げ用の電動機などの負荷への電力を供給するために発電装置（ディーゼルエンジン及び発電機）と蓄電池（２次電池）とが装備されているが、発電機のピークカット及び巻下げ時に発生する回生エネルギの回収を主たる目的として蓄電池が採用されている。これにより、発電機の負荷変動を小さくする事ができ、結果的に発電機のサイズダウンを図ることができるため、燃費改善の効果を得ている。
また、運転待機状態には、蓄電池だけで待機エネルギを担い、発電機を停止することによって、更に燃費を改善する方式も考案されている。 Among such RTGs, there is a hybrid RTG that has been actively commercialized in recent years.
This hybrid RTG is equipped with a power generator (diesel engine and generator) and a storage battery (secondary battery) to supply power to a load such as an electric motor for running or hoisting. A storage battery is employed mainly for the purpose of recovering regenerative energy generated during peak cut and lowering. Thereby, the load fluctuation of the generator can be reduced, and as a result, the size of the generator can be reduced, so that an effect of improving fuel consumption is obtained.
In addition, a system has been devised in which the fuel consumption is further improved in the operation standby state by carrying standby energy only by the storage battery and stopping the generator.

このようなハイブリッドＲＴＧ技術においては、図１０に示すように発電装置１が稼動しているときにあって、巻上げ用電動機２などの負荷の消費エネルギが低いとき又は負荷からの回生エネルギが発生しているときに充電し、図１１に示すように負荷の消費エネルギが高いとき又は発電装置１が停止しているときに放電するといった振る舞いが蓄電池３には期待されている。
つまり、この従来技術においては、充電と放電は同時に行われる必要がないため、蓄電池３は１つで構成されている。なお、図１０及び図１１において、４はＡＣ／ＤＣ変換を行うコンバータ５とＤＣ／ＡＣ変換を行うインバータ６とを組み合わせたインバータユニットである。 In such hybrid RTG technology, as shown in FIG. 10, when the power generator 1 is in operation, the energy consumption of the load such as the hoisting motor 2 is low or regenerative energy is generated from the load. The storage battery 3 is expected to behave in such a manner that it is charged when the battery is running and discharged when the energy consumption of the load is high as shown in FIG.
That is, in this prior art, it is not necessary to perform charging and discharging at the same time, so the storage battery 3 is composed of one. 10 and 11, reference numeral 4 denotes an inverter unit that combines a converter 5 that performs AC / DC conversion and an inverter 6 that performs DC / AC conversion.

なお、従来のＲＴＧの給電装置について開示された先行技術文献としては、例えば次のものがある。
特開２００９−２４２０８８号公報 特開２００９−２３８１６号公報 In addition, as a prior art document disclosed about the electric power feeder of conventional RTG, there exist the following, for example.
JP 2009-242088 A JP 2009-23816 A

上記のように構成された従来技術によるハイブリッドＲＴＧでは、発電装置１を負荷稼動エネルギ源の主としており、蓄電池３は発電装置１の補助として位置づけられていることから、発電装置１の極限までの小型化は適っておらず、結果として、燃費の改善率が理論的に６０％程度(実質的には４０％程度)に留まっている。   In the hybrid RTG according to the related art configured as described above, the power generation device 1 is mainly used as a load operating energy source, and the storage battery 3 is positioned as an auxiliary to the power generation device 1. As a result, the improvement rate of fuel efficiency is theoretically only about 60% (substantially about 40%).

このようなことから、本願の発明者等は発電装置１を排除したクリーンな電動ＲＴＧとして、フル電池ＲＴＧの開発を目指している。フル電池ＲＴＧとは、負荷が要求する稼動エネルギの全てを蓄電池が担い、蓄電池だけで稼動できるＲＴＧである。
このために、蓄電池には、高出力でかつ圧倒的な持久力を持つものが要求されている。そして、この蓄電池の大幅な容量ＵＰに伴って、必然的に蓄電池の充電に必要な時間も長くなることから、いかにして効率的に充電するかという点が課題となっている。 For these reasons, the inventors of the present application aim to develop a full battery RTG as a clean electric RTG from which the power generator 1 is excluded. The full battery RTG is an RTG that can operate with only the storage battery, with the storage battery taking up all of the operating energy required by the load.
For this reason, the storage battery is required to have high output and overwhelming endurance. As the capacity of the storage battery increases significantly, the time required for charging the storage battery inevitably increases, so the problem is how to charge efficiently.

従って本発明は上記の事情に鑑み、フル電池ＲＴＧなどを実現することができる給電装置及びこれを備えたタイヤ式門型クレーンを提供することを課題とする。   Therefore, in view of the above circumstances, an object of the present invention is to provide a power feeding device that can realize a full battery RTG and the like, and a tire-type portal crane including the power feeding device.

上記課題を解決する第１発明の給電装置は、搬送機械に設置され、複数の蓄電池を有し、前記複数の蓄電池の少なくとも１つにより前記搬送機械の負荷に電力を供給する給電装置であって、
他の蓄電池は蓄電池給電手段へ接続して前記蓄電池給電手段からの供給電力を充電する充電可能状態であり、前記放電状態の蓄電池の放電と前記充電可能状態の蓄電池の充電とを同時に行うことを可能とし、
且つ、前記放電状態の蓄電池を充電可能状態に切り替えると同時に前記充電可能状態の蓄電池を放電状態に切り替える蓄電池切替えを、繰り返し行なう蓄電池切替え手段を、
有して成ることを特徴とする。 A power supply device according to a first aspect of the present invention that solves the above problem is a power supply device that is installed in a transport machine, has a plurality of storage batteries, and supplies power to a load of the transport machine by at least one of the plurality of storage batteries. ,
The other storage battery is connected to the storage battery power supply means and is in a chargeable state in which the power supplied from the storage battery power supply means is charged, and discharging the storage battery in the discharged state and charging the storage battery in the chargeable state are performed simultaneously. Made possible
And the storage battery switching means for repeatedly switching the storage battery that switches the storage battery in the chargeable state to the discharge state simultaneously with switching the storage battery in the discharged state to the chargeable state,
It is characterized by having.

また、第２発明の給電装置は、第１発明の給電装置において、
前記蓄電池切替え手段は、残留容量検出手段によって検出される前記放電状態の蓄電池の残留容量が閾値以下になったときに前記蓄電池切替えを行なう、又は、一定時間毎に前記蓄電池切替えを行なう構成であることを特徴とする。 The power supply device of the second invention is the power supply device of the first invention,
The storage battery switching means is configured to switch the storage battery when the remaining capacity of the discharged storage battery detected by the remaining capacity detection means is equal to or less than a threshold value, or to switch the storage battery at regular intervals. It is characterized by that.

また、第３発明の給電装置は、第２発明の給電装置において、
前記蓄電池の残留容量閾値は、前記搬送機械の１作業単位を完了させるだけの給電が可能な残留容量であること特徴とする。 The power supply device of the third invention is the power supply device of the second invention,
The residual capacity threshold value of the storage battery is a residual capacity capable of supplying power enough to complete one work unit of the transport machine.

また、第４発明の給電装置は、第１〜第３発明の何れか１つの給電装置において、
前記蓄電池給電手段は、非接触式給電システム、又は、接触式の地上給電設備、又は、前記搬送機械に搭載した発電設備であることを特徴とする。 Further, the power feeding device of the fourth invention is the power feeding device of any one of the first to third inventions,
The storage battery power supply means is a non-contact power supply system, a contact-type ground power supply facility, or a power generation facility mounted on the transfer machine.

また、第５発明のタイヤ式門型クレーンは、タイヤを駆動する走行用電動機と、被搬送物の巻上げ巻下げを行なう巻上げ用電動機と、トロリを横行させる横行用電動機とを、負荷として有するタイヤ式門型クレーンにおいて、
第１〜第４発明の何れか１つの給電装置を備え、この給電装置における放電状態の蓄電池から前記負荷へ電力を供給する構成であることを特徴とする。 According to a fifth aspect of the present invention, there is provided a tire-type portal crane having as a load a traveling motor for driving a tire, a winding motor for winding and unwinding a conveyed object, and a traversing motor for traversing a trolley. In the type gate type crane,
A power supply device according to any one of the first to fourth aspects of the present invention is provided, and power is supplied from the discharged storage battery in the power supply device to the load.

第１発明の給電装置によれば、搬送機械に設置され、複数の蓄電池を有し、前記複数の蓄電池の少なくとも１つにより前記搬送機械の負荷に電力を供給する給電装置であって、他の蓄電池は蓄電池給電手段へ接続して前記蓄電池給電手段からの供給電力を充電する充電可能状態であり、前記放電状態の蓄電池の放電と前記充電可能状態の蓄電池の充電とを同時に行うことを可能とし、且つ、前記放電状態の蓄電池を充電可能状態に切り替えると同時に前記充電可能状態の蓄電池を放電状態に切り替える蓄電池切替えを、繰り返し行なう蓄電池切替え手段を有して成ることを特徴としており、充電と放電を同時に行うことができるため、搬送機械の負荷が要求する稼動エネルギ（電力）の全てを蓄電池が担い、蓄電池だけで稼動できる搬送機械（例えばフル電池ＲＴＧ）を実現することができる。
しかも、蓄電池給電手段は搬送機械の負荷が要求する稼動エネルギ（電力）の平均値に蓄電池エネルギのロスを考慮した（加えた）エネルギを充電可能状態の蓄電池に補給することができればよいため、蓄電池給電手段の大幅な小型化を図ることができる。 According to the power supply device of the first invention, the power supply device is installed in a transport machine, has a plurality of storage batteries, and supplies power to the load of the transport machine by at least one of the plurality of storage batteries. The storage battery is in a chargeable state in which the storage battery is connected to the storage battery power supply means to charge the power supplied from the storage battery power supply means, and the discharge of the storage battery in the discharged state and the charge of the storage battery in the chargeable state can be performed simultaneously. And storage battery switching means for repeatedly switching the storage battery in the chargeable state to the discharge state at the same time as switching the storage battery in the discharge state to the chargeable state. Since the storage battery bears all the operating energy (electric power) required by the load of the transport machine, the transport machine can operate with only the storage battery. For example it is possible to realize a full battery RTG).
In addition, since the storage battery power supply means only needs to be able to replenish the storage battery in a chargeable state, taking into account (addition) the loss of storage battery energy to the average value of operating energy (electric power) required by the load of the transport machine. The power supply means can be greatly reduced in size.

第２発明の給電装置によれば、第１発明の給電装置において、前記蓄電池切替え手段は、残留容量検出手段によって検出される前記放電状態の蓄電池の残留容量が閾値以下になったときに前記蓄電池切替えを行なう、又は、一定時間毎に前記蓄電池切替えを行なう構成であることを特徴としているため、容易に適切なタイミングで蓄電池切替えを行うことができる。   According to the power supply apparatus of the second invention, in the power supply apparatus of the first invention, the storage battery switching means is configured to store the storage battery when the remaining capacity of the discharged storage battery detected by the remaining capacity detection means becomes equal to or less than a threshold value. Since the storage battery is switched or the storage battery is switched at regular intervals, the storage battery can be easily switched at an appropriate timing.

第３発明の給電装置によれば、第２発明の給電装置において、前記蓄電池の残留容量閾値は、前記搬送機械の１作業単位を完了させるだけの給電が可能な残留容量であること特徴としているため、放電状態の蓄電池の残留容量が搬送機械の１作業単位を完了させるだけの給電が可能な残留容量以下になったときに蓄電池切替えを行なうことができる。   According to the power supply device of the third invention, in the power supply device of the second invention, the remaining capacity threshold value of the storage battery is a remaining capacity capable of supplying power enough to complete one work unit of the transport machine. Therefore, the storage battery can be switched when the remaining capacity of the storage battery in the discharged state becomes equal to or less than the remaining capacity that can be fed enough to complete one work unit of the transport machine.

第４発明の給電装置によれば、第１〜第３発明の何れか１つの給電装置において、前記蓄電池給電手段は、非接触式給電システム、又は、接触式の地上給電設備、又は、前記搬送機械に搭載した発電設備であることを特徴としているため、非接触式給電システム又は接触式の地上給電設備又は発電設備の大幅な小型化を図って、蓄電池だけで稼動できる搬送機械（例えばフル電池ＲＴＧ）を実現することができる。特に、大容量化が難しい非接触式給電システムを用いて、最も将来性が高いと考えられる非接触式地上給電フル電池ＲＴＧの実現を図ることができる。   According to the power feeding device of the fourth invention, in any one of the power feeding devices of the first to third inventions, the storage battery power feeding means is a non-contact power feeding system, a contact ground power feeding facility, or the transport. It is characterized by the fact that it is a power generation facility mounted on a machine. Therefore, a non-contact type power supply system or a contact-type ground power supply facility or a power generation facility can be greatly reduced in size so that it can be operated with only a storage battery (for example, a full battery). RTG) can be realized. In particular, it is possible to achieve a non-contact type ground-fed full battery RTG that is considered to have the highest potential by using a non-contact type power supply system that is difficult to increase in capacity.

第５発明のタイヤ式門型クレーンは、タイヤを駆動する走行用電動機と、被搬送物の巻上げ巻下げを行なう巻上げ用電動機と、トロリを横行させる横行用電動機とを、負荷として有するタイヤ式門型クレーンにおいて、第１〜第４発明の何れか１つの給電装置を備え、この給電装置における放電状態の蓄電池から前記負荷へ電力を供給する構成であることを特徴としているため、蓄電池給電手段（非接触式給電システム、接触式の地上給電設備、発電設備等）の大幅な小型化を図って、蓄電池だけで稼動できるフル電池ＲＴＧを実現することができる。   A tire-type portal crane according to a fifth aspect of the present invention is a tire-type gate having a load including a traveling electric motor for driving a tire, a hoisting motor for hoisting and lowering a transported object, and a traverse motor for traversing a trolley. The type crane includes any one of the first to fourth inventions of the power feeding device, and is configured to supply power to the load from a discharged storage battery in the power feeding device. A full battery RTG that can be operated with only a storage battery can be realized by significantly reducing the size of a non-contact power supply system, a contact-type ground power supply facility, a power generation facility, and the like.

本発明の実施の形態例に係るタイヤ式門型クレーンが適用される一般的なコンテナヤードの構成例を示す図である。It is a figure which shows the structural example of the general container yard to which the tire-type portal crane which concerns on the embodiment of this invention is applied. 本発明の実施の形態例に係るタイヤ式門型クレーンの拡大斜視図である。1 is an enlarged perspective view of a tire-type portal crane according to an embodiment of the present invention. 本発明の実施の形態例に係るタイヤ式門型クレーンの給電装置の構成及びその充放電状態を示す図である。It is a figure which shows the structure of the electric power feeder of the tire type portal crane which concerns on the embodiment of this invention, and its charging / discharging state. 本発明の実施の形態例に係るタイヤ式門型クレーンの給電装置の構成及びその充放電状態を示す図である。It is a figure which shows the structure of the electric power feeder of the tire type portal crane which concerns on the embodiment of this invention, and its charging / discharging state. 本発明の実施の形態例に係るタイヤ式門型クレーンの給電装置の他の構成及びその充放電状態を示す図である。It is a figure which shows the other structure of the electric power feeder of the tire type portal crane which concerns on the embodiment of this invention, and its charging / discharging state. 本発明の実施の形態例に係るタイヤ式門型クレーンの給電装置の他の構成及びその充放電状態を示す図である。It is a figure which shows the other structure of the electric power feeder of the tire type portal crane which concerns on the embodiment of this invention, and its charging / discharging state. 参考例のタイヤ式門型クレーンの給電装置の構成及びその充放電状態を示す図である。It is a figure which shows the structure of the electric power feeder of the tire type portal crane of a reference example, and its charging / discharging state. 参考例のタイヤ式門型クレーンの給電装置の構成及びその充放電状態を示す図である。It is a figure which shows the structure of the electric power feeder of the tire type portal crane of a reference example, and its charging / discharging state. タイヤ式門型クレーンのコンテナ荷役におけるエネルギ消費及びエネルギ発生の様子を示すチャートである。It is a chart which shows the mode of the energy consumption and energy generation in the container handling of a tire type portal crane. 従来のタイヤ式門型クレーンの給電装置の構成及びその充放電状態を示す図である。It is a figure which shows the structure of the electric power feeder of the conventional tire type portal crane, and its charging / discharging state. 従来のタイヤ式門型クレーンの給電装置の構成及びその充放電状態を示す図である。It is a figure which shows the structure of the electric power feeder of the conventional tire type portal crane, and its charging / discharging state.

以下、本発明の実施の形態例を図面に基づいて詳細に説明する。   Embodiments of the present invention will be described below in detail with reference to the drawings.

まず、図１に基づき、本発明の実施の形態例に係るタイヤ式門型クレーンが適用される一般的なコンテナヤードの構成について説明する。
図１に示すように、港湾のコンテナターミナル１１の岸壁には、コンテナ船１２が係留される。このコンテナ船１２に積載されているコンテナ１３は、岸壁に設けられたガントリクレーン（Gantry Crane：以後、ＧＣとも称する）１４によって荷揚げされ、コンテナヤード１５内を自走する自動搬送台車（Automated Guided Vehicle：以後、ＡＧＶとも称する）１６へ積み替えられる。ＡＧＶ１６に積載されたコンテナ１３は、コンテナヤード１５の各コンテナ蔵置部１７へＡＧＶ１６によって搬送される。
そして、コンテナヤード１５の各コンテナ蔵置部１７には本実施の形態例のタイヤ式門型クレーン（ＲＴＧ）１８が配置されており、ＡＧＶ１６によって搬送されてきたコンテナ１３が、このＲＴＧ１８の荷役作業によってコンテナ蔵置部１７の所望の位置に置かれる。 First, based on FIG. 1, the structure of the general container yard to which the tire type portal crane which concerns on the embodiment of this invention is applied is demonstrated.
As shown in FIG. 1, a container ship 12 is moored on a quay of a container terminal 11 in a harbor. A container 13 loaded on the container ship 12 is unloaded by a gantry crane (Gantry Crane: hereinafter referred to as GC) 14 provided on a quay, and is automatically guided in a container yard 15 (Automated Guided Vehicle). : Hereinafter also referred to as AGV). The container 13 loaded on the AGV 16 is conveyed by the AGV 16 to each container storage unit 17 in the container yard 15.
A tire type portal crane (RTG) 18 according to the present embodiment is arranged in each container storage portion 17 of the container yard 15, and the container 13 transported by the AGV 16 is loaded and unloaded by the RTG 18. The container storage unit 17 is placed at a desired position.

一方、コンテナ船１２にコンテナ１３を積載する場合には、コンテナ蔵置部１７に置かれているコンテナ１３が、ＲＴＧ１８の荷役作業によってＡＧＶ１６へ積載される。ＡＧＶ１６に積載されたコンテナ１３は、ＧＣ１４までＡＧＶ１６によって搬送され、ＧＣ１４の荷役作業によってコンテナ船１２へ積み込まれる。   On the other hand, when the container 13 is loaded on the container ship 12, the container 13 placed in the container storage unit 17 is loaded on the AGV 16 by the cargo handling operation of the RTG 18. The container 13 loaded on the AGV 16 is transported by the AGV 16 to the GC 14 and loaded on the container ship 12 by the cargo handling operation of the GC 14.

次に、図２に基づき、ＲＴＧ１８の概要について説明する。
図２に示すように、ＲＴＧ１８は、水平に延びた２本の梁２１Ａと、この梁２１Ａの両側に設けられた４本の脚部２１Ｂとを一体的に結合して成る門型のガントリ２１を有している。梁２１Ａ上にはトロリ２２が設けられる一方、各脚部２１Ａの下端部には台車２３Ａ，２３Ｂ，２３Ｃ，２３Ｄがそれぞれ取り付けられている。台車２３Ａ，２３Ｂ，２３Ｃ，２３Ｄには、タイヤ２４Ａ，２４Ｂ，２４Ｃ，２４Ｄ及び走行用電動機２５Ａ，２５Ｂ，２５Ｃ，２５Ｄが装備されている。 Next, an outline of the RTG 18 will be described with reference to FIG.
As shown in FIG. 2, the RTG 18 is a portal gantry 21 formed by integrally connecting two beams 21A extending horizontally and four legs 21B provided on both sides of the beams 21A. have. A trolley 22 is provided on the beam 21A, and trolleys 23A, 23B, 23C, and 23D are attached to the lower ends of the legs 21A. The carriages 23A, 23B, 23C, 23D are equipped with tires 24A, 24B, 24C, 24D and traveling motors 25A, 25B, 25C, 25D.

従って、ＲＴＧ１８は、走行用電動機２５Ａ〜２５Ｄによってタイヤ２４Ａ〜２４Ｄをそれぞれ回転駆動することにより、コンテナヤード１５のコンテナ蔵置部１７に敷設された給電ケーブル２６に沿って（即ち矢印Ａの如くコンテナ蔵置部１５の長手方向に沿って）走行することができる。なお、図示は省略するが、ＲＴＧ１８は、台車２３Ａ〜２３Ｄ（タイヤ２４Ａ〜２４Ｄ）を水平に９０度回動することも可能であり、これらを９０度回動させれば、矢印Ｂの如く給電ケーブル２６と直交する方向へ走行して別のコンテナ蔵置部１７へ移動することもできる。   Therefore, the RTG 18 rotates the tires 24A to 24D by the driving motors 25A to 25D, respectively, thereby along the power supply cable 26 laid in the container storage portion 17 of the container yard 15 (that is, as indicated by the arrow A). It can travel along the longitudinal direction of the part 15. In addition, although illustration is abbreviate | omitted, RTG18 can also rotate the trolley | bogie 23A-23D (tire 24A-24D) horizontally 90 degree | times, and if these are rotated 90 degree | times, it will supply electric power as shown by the arrow B It is also possible to travel in a direction orthogonal to the cable 26 and move to another container storage unit 17.

一方、トロリ２２には巻上げ機２７、巻上げ用電動機２８及び横行用電動機２２が装備されている。巻上げ機２７には複数本のワイヤロープ３０が取り付けられており、これらのワイヤロープ３０の下端部にはコンテナ１３を吊持するためのスプレッダ３１が取り付けられている。従って、巻上げ用電動機２８の回転駆動によって巻上げ機２７が正転又は逆転すると、巻上げ機２７がワイヤロープ３０を巻き取る又は巻き戻すことにより、スプレッダ３１とともにコンテナ１３が巻上げ又は巻下げられる。
また、横行用電動機２９によってトロリ２２の駆動輪（図示省略）を回転駆動することにより、トロリ２２は矢印Ｃの如く梁２１Ａのレール（図示省略）に沿って梁２１Ａの長手方向へ横行する。 On the other hand, the trolley 22 is equipped with a hoisting machine 27, a hoisting electric motor 28, and a traversing electric motor 22. A plurality of wire ropes 30 are attached to the hoisting machine 27, and a spreader 31 for hanging the container 13 is attached to the lower ends of these wire ropes 30. Accordingly, when the winder 27 is rotated forward or reversely by the rotational drive of the winder motor 28, the winder 27 winds or unwinds the wire rope 30, whereby the container 13 is wound or unwound together with the spreader 31.
Further, when the driving wheel (not shown) of the trolley 22 is rotationally driven by the traversing electric motor 29, the trolley 22 traverses in the longitudinal direction of the beam 21A along the rail (not shown) of the beam 21A as shown by an arrow C.

そして、ガントリ２１の支持台２１Ｃには給電装置３２が設置されており、この給電装置３２から、ＲＴＧ１８の電動機２５Ａ〜２５Ｂ，２８，２９などの負荷に対して電力が供給される。   A power supply device 32 is installed on the support base 21 </ b> C of the gantry 21, and electric power is supplied from the power supply device 32 to loads such as the electric motors 25 </ b> A to 25 </ b> B, 28, and 29 of the RTG 18.

次に、図３及び図４に基づき、給電装置３２の構成等について説明する。
図３及び図４に示すように、１次コイルである給電ケーブル２６は、充電盤４１、地上変圧器４２及び地上高圧盤４３を介して、電力系統（図示省略）に接続されている。一方、ＲＴＧ１８には二次コイルを有する非接触式の受電部４４が設けられている。この受電部４４は、ＲＴＧ１８が矢印Ａの如く給電ケーブル２６に沿って走行するとき、給電ケーブル２６に近接するように配設されている。 Next, based on FIG.3 and FIG.4, the structure etc. of the electric power feeder 32 are demonstrated.
As shown in FIGS. 3 and 4, the power supply cable 26 that is a primary coil is connected to a power system (not shown) via a charging board 41, a ground transformer 42, and a ground high voltage board 43. On the other hand, the RTG 18 is provided with a non-contact type power receiving unit 44 having a secondary coil. The power receiving unit 44 is disposed so as to be close to the power supply cable 26 when the RTG 18 travels along the power supply cable 26 as indicated by an arrow A.

即ち、図３及び図４では蓄電池給電手段として、地上給電設備の非接触式給電システムが採用されている。
この非接触式給電システムでは、電力系統から地上高圧盤４３を介して供給される電力が、地上変圧器４２で６６００Ｖの高電圧から４４０Ｖの低電圧に変圧された後、充電盤４１で高周波に変化されて給電ケーブル２６に供給される。このため、給電ケーブル２６に近接している受電部４４では、給電ケーブル２６（１次コイル）と受電部４４（２次コイル）との間の電磁誘導作用によって交流電力が得られ、この交流電力を受電部４４の整流回路で整流することにより、直流電力に変換して出力する。 That is, in FIG.3 and FIG.4, the non-contact-type electric power feeding system of ground electric power feeding equipment is employ | adopted as a storage battery electric power feeding means.
In this non-contact power supply system, the electric power supplied from the power system through the ground high voltage board 43 is transformed from a high voltage of 6600 V to a low voltage of 440 V by the ground transformer 42, and then converted to a high frequency by the charging board 41. It is changed and supplied to the feeding cable 26. For this reason, in the power reception unit 44 close to the power supply cable 26, AC power is obtained by electromagnetic induction between the power supply cable 26 (primary coil) and the power reception unit 44 (secondary coil). Is rectified by the rectifier circuit of the power receiving unit 44 to be converted into DC power and output.

そして、この受電部４４から出力される直流電力（定電流定電圧制御された電力）が、給電装置３２の２つの蓄電池４５，４６の何れか一方に供給されて充電される。   The DC power output from the power receiving unit 44 (power controlled at constant current and constant voltage) is supplied to one of the two storage batteries 45 and 46 of the power supply device 32 and charged.

蓄電池４５の負極側端子４５ａはアースされている。蓄電池４５の正極側端子４５ｂは、蓄電池切替えスイッチ４７の第１接点４７ａを介して受電部４４に接続され、且つ、蓄電池切替えスイッチ４８の第１接点４８ａを介して各インバータユニット４９，５０，５１，５２，５３，５４に接続されている。インバータユニット４９，５０，５１，５２，５３，５４はＡＣ／ＤＣ変換を行なうコンバータ５５，５６，５７，５８，５９，６０とインバータ６１，６２，６３，６４，６５，６６とをそれぞれ組み合わせたものであり、蓄電池４５の正極側端子４５ｂはインバータ６１，６２，６３，６４，６５，６６の直流（ＤＣ）側に接続されている。   The negative electrode side terminal 45a of the storage battery 45 is grounded. A positive electrode side terminal 45 b of the storage battery 45 is connected to the power receiving unit 44 via the first contact 47 a of the storage battery changeover switch 47, and each inverter unit 49, 50, 51 via the first contact 48 a of the storage battery changeover switch 48. , 52, 53, 54. Inverter units 49, 50, 51, 52, 53, 54 combine converters 55, 56, 57, 58, 59, 60 for performing AC / DC conversion and inverters 61, 62, 63, 64, 65, 66, respectively. The positive terminal 45b of the storage battery 45 is connected to the direct current (DC) side of the inverters 61, 62, 63, 64, 65, 66.

蓄電池４６の負極側端子４６ａはアースされている。蓄電池４６の正極側端子４６ｂは、蓄電池切替えスイッチ４７の第２接点４７ｂを介して受電部４４に接続され、且つ、蓄電池切替えスイッチ４８の第２接点４８ｂを介して各インバータユニット４９，５０，５１，５２，５３，５４のインバータ６１，６２，６３，６４，６５，６６の直流（ＤＣ）側に接続されている。   The negative terminal 46a of the storage battery 46 is grounded. The positive terminal 46 b of the storage battery 46 is connected to the power receiving unit 44 via the second contact 47 b of the storage battery changeover switch 47, and each inverter unit 49, 50, 51 via the second contact 48 b of the storage battery changeover switch 48. , 52, 53, 54 are connected to the direct current (DC) side of inverters 61, 62, 63, 64, 65, 66.

インバータ６１の交流（ＡＣ）側は、電磁開閉器６７を介して、例えば容量が２２ｋＷの交流の横行用電動機２９に接続されている。インバータ６２，６３，６４，６５の交流（ＡＣ）側は、電磁開閉器６８，６９，７０，７１を介して、例えば容量が３０ｋＷの交流の走行用電動機２５Ａ，２５Ｂ，２５Ｃ，２５Ｄにそれぞれ接続されている。また、インバータ６４，６５の交流（ＡＣ）側は、電磁開閉器７２，７３を介して、例えば容量が１５０ｋＷの交流の巻上げ用電動機２８にも接続されている。
また、インバータ６６の交流（ＡＣ）側は、リアクトル７４及び変圧器７５を介して、ＲＴＧ１８に装備された空調装置や照明などの各種の補機７６に接続されている。 The alternating current (AC) side of the inverter 61 is connected via an electromagnetic switch 67 to, for example, an alternating current electric motor 29 having a capacity of 22 kW. The alternating current (AC) side of the inverters 62, 63, 64, 65 is connected to AC traveling motors 25A, 25B, 25C, 25D having a capacity of 30 kW, for example, via electromagnetic switches 68, 69, 70, 71, respectively. Has been. Moreover, the alternating current (AC) side of the inverters 64 and 65 is also connected to the AC winding motor 28 having a capacity of 150 kW, for example, via the electromagnetic switches 72 and 73.
Further, the alternating current (AC) side of the inverter 66 is connected to various auxiliary devices 76 such as an air conditioner and lighting equipped in the RTG 18 via a reactor 74 and a transformer 75.

即ち、２つの蓄電池４５，４６は、蓄電池切替えスイッチ４６（接点４６ａ，４６ｂ）を介して、非接触式給電システム（受電部４４）に対し並列に接続され、且つ、蓄電池切替えスイッチ４７（接点４７ａ，４７ｂ）を介して、ＲＴＧ１８の負荷（電動機２５Ａ〜２５Ｄ，２８，２９、補機７６）に対し並列に接続されている。   That is, the two storage batteries 45 and 46 are connected in parallel to the non-contact power supply system (power receiving unit 44) via the storage battery changeover switch 46 (contacts 46a and 46b), and the storage battery changeover switch 47 (contact 47a). , 47b) and connected in parallel to the load of the RTG 18 (electric motors 25A to 25D, 28, 29, auxiliary machine 76).

また、蓄電池４５には残留容量検出器７８が設けられている。この残留容量検出器７８では、例えば蓄電池４５の端子電圧を監視することなどの検出原理により、蓄電池４５の残留容量を検出して、残留容量の検出信号を制御装置７７へ出力する。蓄電池４６には残留容量検出器７９が設けられている。この残留容量検出器７９では、例えば蓄電池４６の端子電圧を監視することなどの検出原理により、蓄電池４６の残留容量を検出して、残留容量の検出信号を制御装置７７へ出力する。なお、制御装置７７は蓄電池切替え専用のものでもよく、ＲＴＧ１８の全体的な制御を行なうものでもよい。   The storage battery 45 is provided with a residual capacity detector 78. The residual capacity detector 78 detects the residual capacity of the storage battery 45 based on a detection principle such as monitoring the terminal voltage of the storage battery 45 and outputs a residual capacity detection signal to the control device 77. The storage battery 46 is provided with a residual capacity detector 79. The residual capacity detector 79 detects the residual capacity of the storage battery 46 based on a detection principle such as monitoring the terminal voltage of the storage battery 46 and outputs a residual capacity detection signal to the control device 77. Note that the control device 77 may be dedicated to storage battery switching or may perform overall control of the RTG 18.

制御装置７７では、残留容量検出器７８，７９で検出する蓄電池４５，４６の残留容量に基づいて、蓄電池切替えスイッチ４７，４８へ蓄電池切替え指令信号を出力する。
蓄電池切替えスイッチ４７では、制御装置７７からの蓄電池切替え指令信号に基づいて、第１接点４７ａ及び第２接点４７ｂの開閉動作を行うことにより、非接触式給電システム（受電部４４）へ接続する蓄電池を、蓄電池４５から蓄電池４６へ切り替える、又は、蓄電池４６から蓄電池４５へ切り替える。
同時に、蓄電池切替えスイッチ４８では、制御装置７７からの蓄電池切替え指令信号に基づいて、第１接点４８ａ及び第２接点４８ｂの開閉動作を行うことにより、ＲＴＧ１８の負荷（電動機２５Ａ〜２５Ｄ，２８，２９及び補機７６）へ接続する蓄電池を、蓄電池４５から蓄電池４６へ切り替える、又は、蓄電池４６から蓄電池４５へ切り替える。 The control device 77 outputs a storage battery switching command signal to the storage battery switching switches 47 and 48 based on the remaining capacity of the storage batteries 45 and 46 detected by the remaining capacity detectors 78 and 79.
In the storage battery changeover switch 47, a storage battery connected to the non-contact power supply system (power receiving unit 44) by performing an opening / closing operation of the first contact 47 a and the second contact 47 b based on a storage battery switch command signal from the control device 77. Is switched from the storage battery 45 to the storage battery 46 or switched from the storage battery 46 to the storage battery 45.
At the same time, the storage battery changeover switch 48 opens and closes the first contact 48 a and the second contact 48 b based on the storage battery change command signal from the control device 77, thereby loading the load on the RTG 18 (electric motors 25 </ b> A to 25 </ b> D, 28, 29). And the storage battery connected to the auxiliary machine 76) is switched from the storage battery 45 to the storage battery 46, or is switched from the storage battery 46 to the storage battery 45.

図３及び図４に基づき、この制御装置７７による蓄電池切替え制御について詳述する。   Based on FIG.3 and FIG.4, the storage battery switching control by this control apparatus 77 is explained in full detail.

図３には、蓄電池切替えスイッチ４７の第１接点４７ａが開き、第２接点４７ｂが閉じて、蓄電池４６が非接触式給電システム（受電部４４）へ接続される一方、蓄電池切替えスイッチ４８の第１接点４８ａが閉じ、第２接点４８ｂが開いて、蓄電池４５がＲＴＧ１８の負荷（電動機２５Ａ〜２５Ｄ，２８，２９及び補機７６）へ接続されているときの状態を示している。
このときには、図３中に矢印Ｄで示すように蓄電池４５は放電状態となり、ＲＴＧ１８の負荷へ電力を供給する、或いは、巻上げ用電動機２８などの負荷から電力の回生があったときには当該回生電力が充電される一方、図３中に矢印Ｅで示すように蓄電池４６は充電可能状態となり、非接触式給電システムからの供給電力によって充電される。
かかる状態において、蓄電池４６の残留容量は増加する一方、蓄電池４５の残留容量は徐々に低下する。そして、制御装置７７では、残留容量検出器７８によって検出される蓄電池４５の残留容量と閾値とを比較し、前記残留容量が前記閾値以下になったと判定すると、蓄電池切替えスイッチ４７，４８に対して蓄電池切替え指令信号を出力する。 In FIG. 3, the first contact 47 a of the storage battery changeover switch 47 is opened, the second contact 47 b is closed, and the storage battery 46 is connected to the non-contact power supply system (power receiving unit 44), while the storage battery changeover switch 48 The state is shown when the first contact 48a is closed and the second contact 48b is opened, and the storage battery 45 is connected to the load of the RTG 18 (the motors 25A to 25D, 28, 29, and the auxiliary device 76).
At this time, as indicated by an arrow D in FIG. 3, the storage battery 45 is in a discharged state to supply power to the load of the RTG 18, or when power is regenerated from a load such as the hoisting motor 28, the regenerative power is On the other hand, as shown by the arrow E in FIG. 3, the storage battery 46 is in a chargeable state and is charged by the power supplied from the non-contact power supply system.
In this state, the remaining capacity of the storage battery 46 increases, while the remaining capacity of the storage battery 45 gradually decreases. Then, when the control device 77 compares the remaining capacity of the storage battery 45 detected by the remaining capacity detector 78 with a threshold value and determines that the remaining capacity is equal to or less than the threshold value, A storage battery switching command signal is output.

その結果、蓄電池切替えスイッチ４７の第１接点４７ａが閉じて、第２接点４７ｂが開くことにより、非接触式給電システムへ接続される蓄電池が、蓄電池４６から蓄電池４５へ切り替わる。同時に、蓄電池切替えスイッチ４８の第１接点４８ａが開いて、第２接点４８ｂが閉じることにより、ＲＴＧ１８の負荷へ接続される蓄電池が、蓄電池４５から蓄電池４６へ切り替わる。   As a result, the first contact 47a of the storage battery changeover switch 47 is closed and the second contact 47b is opened, so that the storage battery connected to the non-contact power supply system is switched from the storage battery 46 to the storage battery 45. At the same time, when the first contact 48 a of the storage battery changeover switch 48 is opened and the second contact 48 b is closed, the storage battery connected to the load of the RTG 18 is switched from the storage battery 45 to the storage battery 46.

このときの状態を図４に示している。このとき、図４中に矢印Ｆで示すように蓄電池４６は放電状態となり、ＲＴＧ１８の負荷へ電力を供給し、また、巻上げ用電動機２８などの負荷から電力の回生があったときには当該回生電力が充電される一方、図４中に矢印Ｇで示すように蓄電池４５は充電可能状態となり、非接触式給電システムからの供給電力が充電される。
かかる状態において、蓄電池４５の残留容量は増加する一方、蓄電池４６の残留容量は徐々に低下する。そして、制御装置７７では、残留容量検出器７９によって検出される蓄電池４６の残留容量と閾値とを比較し、前記残留容量が前記閾値以下になったと判定すると、蓄電池切替えスイッチ４７，４８に対して蓄電池切替え指令信号を出力する。 The state at this time is shown in FIG. At this time, as shown by arrow F in FIG. 4, the storage battery 46 is in a discharged state, supplies power to the load of the RTG 18, and when power is regenerated from a load such as the hoisting motor 28, the regenerative power is On the other hand, as shown by the arrow G in FIG. 4, the storage battery 45 is in a chargeable state, and the power supplied from the non-contact power supply system is charged.
In this state, the residual capacity of the storage battery 45 increases, while the residual capacity of the storage battery 46 gradually decreases. Then, when the control device 77 compares the remaining capacity of the storage battery 46 detected by the remaining capacity detector 79 with a threshold value and determines that the remaining capacity is equal to or less than the threshold value, A storage battery switching command signal is output.

その結果、蓄電池切替えスイッチ４７の第１接点４７ａが開いて、第２接点４７ｂが閉じることにより、非接触式給電システムへ接続される蓄電池が、蓄電池４５から蓄電池４６へ切り替わる。同時に、蓄電池切替えスイッチ４８の第１接点４８ａが閉じて、第２接点４８ｂが開くことにより、ＲＴＧ１８の負荷へ接続される蓄電池が、蓄電池４６から蓄電池４６へ切り替わる。即ち、前述の図３の状態となる。なお、前記蓄電池４５，４６の残留容量閾値は、例えば、ＲＴＧ１８の１作業単位（コンテナ荷役の１サイクル：詳細後述）を完了させるだけの給電が可能な残留容量とする。   As a result, when the first contact 47a of the storage battery changeover switch 47 is opened and the second contact 47b is closed, the storage battery connected to the non-contact power supply system is switched from the storage battery 45 to the storage battery 46. At the same time, when the first contact 48 a of the storage battery changeover switch 48 is closed and the second contact 48 b is opened, the storage battery connected to the load of the RTG 18 is switched from the storage battery 46 to the storage battery 46. That is, the state shown in FIG. Note that the remaining capacity threshold value of the storage batteries 45 and 46 is, for example, a remaining capacity that can be fed enough to complete one work unit of RTG 18 (one cycle of container handling: details will be described later).

以後、このような蓄電池切替えが繰り返され、常時、充電と放電を同時に行うことができる状態となる。
つまり、蓄電池切換スイッチ４７，４８及び制御装置７７は蓄電池切替え手段を構成しており、この蓄電池切替え手段では、放電状態の蓄電池４５（又は蓄電池４６）を充電可能状態に切り替えると同時に充電可能状態の蓄電池４６（又は蓄電池４５）を放電状態に切り替える蓄電池切替えを、繰り返し行なう。
なお、このような蓄電池切替えは、電力を充電（貯蔵）した蓄電池４５（又は蓄電池４６）を、放電によって残留容量が低下した蓄電池４６（又蓄電池４５）と切り替えることから、バンク切り替えとも称している。 Thereafter, such storage battery switching is repeated, so that charging and discharging can be performed simultaneously at all times.
That is, the storage battery changeover switches 47 and 48 and the control device 77 constitute storage battery switching means. In this storage battery switching means, the storage battery 45 (or storage battery 46) in a discharged state is switched to a chargeable state and at the same time charged. The storage battery switching for switching the storage battery 46 (or the storage battery 45) to the discharged state is repeated.
Such storage battery switching is also referred to as bank switching because the storage battery 45 (or storage battery 46) charged (stored) with electric power is switched to the storage battery 46 (or storage battery 45) whose residual capacity has decreased due to discharge. .

また、上記では残留容量の検出信号に基づいて蓄電池切替えを行う場合について説明したが、必ずしもこれに限定するものではなく、例えば、制御装置７７から一定時間毎に蓄電池切替えスイッチ４７，４８へ蓄電池切換指令信号を出力し、この蓄電池切換指令信号に基づいて蓄電池切替えスイッチ４７の第１接点４７ａ及び第２接点４７ｂの開閉状態を切り替え、且つ、蓄電池切替えスイッチ４８の第１接点４８ａ及び第２接点４８ｂの開閉状態を切り替えることにより、前記一定時間毎に、非接触式給電システムへ接続する蓄電池（即ち充電可能状態の蓄電池）を、蓄電池４５（又は蓄電池４６）から蓄電池４６（又は蓄電池４５）へ切り替え、且つ、ＲＴＧ１８の負荷へ接続する蓄電池（即ち放電状態の蓄電池）を、蓄電池４６（又は蓄電池４５）から蓄電池４５（又は蓄電池４６）へ切り替えるようにしてもよい。   In the above description, the case where the storage battery is switched based on the detection signal of the remaining capacity has been described. However, the present invention is not necessarily limited thereto. For example, the storage battery is switched from the control device 77 to the storage battery switching switches 47 and 48 at regular intervals. A command signal is output, and the open / close state of the first contact 47a and the second contact 47b of the storage battery switch 47 is switched based on the storage battery switch command signal, and the first contact 48a and the second contact 48b of the storage battery switch 48 are switched. By switching the open / close state of the battery, the storage battery (that is, the storage battery in a chargeable state) connected to the non-contact power supply system is switched from the storage battery 45 (or the storage battery 46) to the storage battery 46 (or the storage battery 45) at every predetermined time. And the storage battery (that is, the storage battery in a discharged state) connected to the load of the RTG 18 is replaced with the storage battery 46 (or It may be switched from the battery 45) to the storage battery 45 (or the storage battery 46).

また、非接触式給電システムとしては、エアギャップを介して電磁誘導作用を生じるものに限らず、鉄心が介してトランス結合するものや、マイクロ波送電方式のものなど、適宜のものを用いることができる。
また、必ずしも非接触式給電システムに限定するものではなく、図示は省略するが、接触式の地上給電設備（例えばパンタグラフ式のものなど）を蓄電池給電手段として用いてもよい。この場合にも、蓄電池４５，４６のバンク切り替え方式については非接触式給電システムを用いた場合と同様である。 In addition, the non-contact power supply system is not limited to the one that generates electromagnetic induction through the air gap, and an appropriate one such as one that is transformer-coupled through an iron core or one that uses a microwave power transmission method may be used. it can.
Moreover, it is not necessarily limited to a non-contact type electric power feeding system, and although illustration is abbreviate | omitted, you may use a contact-type ground electric power installation (for example, pantograph type etc.) as a storage battery electric power feeding means. Also in this case, the bank switching method of the storage batteries 45 and 46 is the same as that in the case of using the non-contact power supply system.

更には、図５及び図６に示すように、ＲＴＧ１８に発電設備９１を搭載することにより（即ちハイブリッドＲＴＧとすることにより）、この発電設備９１を蓄電池給電手段として用いてもよい。発電設備９１はディーゼルエンジンなどのエンジンと、このエンジンの回転駆動によって発電する発電機とを備えたものである。発電設備９１の発電電力はコンバータ９２によってＡＣ／ＤＣ変換される。そして、このコンバータ９２から出力される直流電力（定電流定電圧制御された電力）が、給電装置３２の２つの蓄電池４５，４６の何れか一方に供給されて充電される。この場合にも、蓄電池４５，４６のバンク切り替え方式については非接触式給電システムを用いた場合と同様である。   Furthermore, as shown in FIGS. 5 and 6, the power generation facility 91 may be used as a storage battery power supply unit by mounting the power generation facility 91 on the RTG 18 (that is, by using a hybrid RTG). The power generation equipment 91 includes an engine such as a diesel engine and a generator that generates electric power by rotating the engine. The power generated by the power generation facility 91 is AC / DC converted by the converter 92. The DC power output from the converter 92 (power controlled at constant current and constant voltage) is supplied to one of the two storage batteries 45 and 46 of the power supply device 32 and charged. Also in this case, the bank switching method of the storage batteries 45 and 46 is the same as that in the case of using the non-contact power supply system.

図５には、蓄電池切替えスイッチ４７の第１接点４７ａが開き、第２接点４７ｂが閉じて、蓄電池４６が発電設備９１へ接続される一方、蓄電池切替えスイッチ４８の第１接点４８ａが閉じ、第２接点４８ｂが開いて、蓄電池４５がＲＴＧ１８の負荷へ接続されているときの状態を示している。このときには、図５中に矢印Ｌで示すように蓄電池４５は放電状態となり、ＲＴＧ１８の負荷へ電力を供給する、或いは、巻上げ用電動機２８など負荷から電力の回生があったときには当該回生電力が充電される一方、図５中に矢印Ｍで示すように蓄電池４６は充電可能状態となり、発電設備９１からの供給電力によって充電される。
図６には、蓄電池切替えスイッチ４７の第１接点４７ａが閉じ、第２接点４７ｂが開いて、蓄電池４５が発電設備９１へ接続される一方、蓄電池切替えスイッチ４８の第１接点４８ａが開き、第２接点４８ｂが閉じて、蓄電池４６がＲＴＧ１８の負荷へ接続されているときの状態を示している。このときには、図６中に矢印Ｎで示すように蓄電池４６は放電状態となり、ＲＴＧ１８の負荷へ電力を供給する、或いは、巻上げ用電動機２８など負荷から電力の回生があったときには当該回生電力が充電される一方、図６中に矢印Ｏで示すように蓄電池４５は充電可能状態となり、発電設備９１からの供給電力によって充電される。 In FIG. 5, the first contact 47a of the storage battery changeover switch 47 is opened, the second contact 47b is closed, and the storage battery 46 is connected to the power generation equipment 91, while the first contact 48a of the storage battery changeover switch 48 is closed, The state when the two contacts 48b are opened and the storage battery 45 is connected to the load of the RTG 18 is shown. At this time, as indicated by an arrow L in FIG. 5, the storage battery 45 is in a discharged state to supply power to the load of the RTG 18, or when the power is regenerated from the load such as the hoisting motor 28, the regenerative power is charged. On the other hand, as shown by an arrow M in FIG. 5, the storage battery 46 is in a chargeable state and is charged by the power supplied from the power generation facility 91.
In FIG. 6, the first contact 47a of the storage battery changeover switch 47 is closed, the second contact 47b is opened, and the storage battery 45 is connected to the power generation equipment 91, while the first contact 48a of the storage battery changeover switch 48 is opened, The state when the two contacts 48b are closed and the storage battery 46 is connected to the load of the RTG 18 is shown. At this time, as indicated by an arrow N in FIG. 6, the storage battery 46 is in a discharged state to supply power to the load of the RTG 18, or when power is regenerated from the load such as the hoisting motor 28, the regenerative power is charged. On the other hand, as shown by an arrow O in FIG. 6, the storage battery 45 is in a chargeable state and is charged by the power supplied from the power generation equipment 91.

以上のように、本実施の形態例の給電装置３２によれば、２つの蓄電池４５，４６を有し、２つの蓄電池４５，４６の１つ（蓄電池４５（又は蓄電池４６））によりＲＴＧ１８の負荷に電力を供給する給電装置であって、他の蓄電池４６（又は蓄電池４５）は蓄電池給電手段（非接触式給電システム、接触式の地上給電設備、発電設備９１）へ接続して前記蓄電池給電手段からの供給電力を充電する充電可能状態であり、前記放電状態の蓄電池４５（又は蓄電池４６）の放電と前記充電可能状態の蓄電池４６（又は蓄電池４５）の充電とを同時に行うことを可能とし、且つ、前記放電状態の蓄電池４５（又は蓄電池４６）を充電可能状態に切り替えると同時に前記充電可能状態の蓄電池４６（又は蓄電池４５）を放電状態に切り替える蓄電池切替えを、繰り返し行なう蓄電池切替え手段（蓄電池切換スイッチ４７，４８、制御装置７７）を有して成ることを特徴としており、充電と放電を同時に行うことができるため、ＲＴＧ１８の負荷が要求する稼動エネルギ（電力）の全てを蓄電池が担い、蓄電池だけで稼動できるフル電池ＲＴＧを実現することができる。
しかも、蓄電池給電手段（非接触式給電システム、接触式の地上給電設備、発電設備９１）はＲＴＧ１８の負荷が要求する稼動エネルギ（電力）の平均値に蓄電池エネルギのロスを考慮した（加えた）エネルギを充電可能状態の蓄電池に補給することができればよいため、蓄電池給電手段（非接触式給電システム、接触式の地上給電設備、発電設備９１）の大幅な小型化を図ることができる。特に、大容量化が難しい非接触式給電システムを用いて、最も将来性が高いと考えられる非接触式地上給電フル電池ＲＴＧ１８の実現を図ることができる。 As described above, according to the power supply device 32 of the present embodiment, the load of the RTG 18 is provided by one of the two storage batteries 45 and 46 (the storage battery 45 (or the storage battery 46)). The other storage battery 46 (or storage battery 45) is connected to storage battery power supply means (non-contact power supply system, contact type ground power supply facility, power generation equipment 91), and the storage battery power supply means. In a chargeable state for charging the power supplied from the battery, enabling the discharging of the storage battery 45 (or storage battery 46) in the discharged state and the charging of the storage battery 46 (or storage battery 45) in the chargeable state simultaneously. Further, the storage battery 45 (or the storage battery 46) in the discharged state is switched to the chargeable state, and at the same time the storage battery 46 (or the storage battery 45) in the chargeable state is switched to the discharged state. It is characterized by having storage battery switching means (storage battery switching switches 47 and 48, control device 77) for repeated replacement, and since charging and discharging can be performed simultaneously, the operating energy required by the load of the RTG 18 A storage battery bears all of (electric power), and a full battery RTG that can be operated only by the storage battery can be realized.
Moreover, the storage battery power supply means (contactless power supply system, contact type ground power supply facility, power generation facility 91) considers (adds) the loss of storage battery energy to the average value of operating energy (electric power) required by the load of the RTG 18 Since it is sufficient that energy can be supplied to the rechargeable storage battery, the storage battery power supply means (non-contact power supply system, contact ground power supply facility, power generation facility 91) can be greatly reduced in size. In particular, it is possible to realize a non-contact type ground-fed full battery RTG 18 that is considered to have the highest potential by using a non-contact type power supply system that is difficult to increase in capacity.

また、本実施の形態例の給電装置３２によれば、前記蓄電池切替え手段は、残留容量検出器７８，７９によって検出される前記放電状態の蓄電池４５（又は蓄電池４６）の残留容量が閾値以下になったときに前記蓄電池切替えを行なう、又は、一定時間毎に前記蓄電池切替えを行なう構成であることを特徴としているため、容易に適切なタイミングで蓄電池切替えを行うことができる。   Further, according to the power supply device 32 of the present embodiment, the storage battery switching means is configured such that the remaining capacity of the storage battery 45 (or the storage battery 46) in the discharged state detected by the remaining capacity detectors 78 and 79 is equal to or less than a threshold value. Therefore, the storage battery is switched at a certain time, or the storage battery is switched at regular intervals. Therefore, the storage battery can be easily switched at an appropriate timing.

また、本実施の形態例の給電装置３２によれば、蓄電池４５，４６の残留容量閾値は、ＲＴＧ１８の１作業単位を完了させるだけの給電が可能な残留容量であること特徴としているため、放電状態の蓄電池４５（又は蓄電池４６）の残留容量がＲＴＧ１８の１作業単位を完了させるだけの給電が可能な残留容量以下になったときに蓄電池切替えを行なうことができる。   In addition, according to the power supply device 32 of the present embodiment, the remaining capacity threshold value of the storage batteries 45 and 46 is characterized by a remaining capacity that can supply power only to complete one unit of work of the RTG 18. The storage battery can be switched when the remaining capacity of the storage battery 45 (or the storage battery 46) in the state becomes equal to or less than the remaining capacity that can be fed enough to complete one unit of work of the RTG 18.

ここで、本発明の効果を図７〜図９に基づいて更に詳述する。
従来技術であるハイブリッドＲＴＧの回路構成をそのまま応用すると、図７及び図８の参考例のように1つの蓄電池８１で回路が構成されることから、この蓄電池８１において充電と放電を同時に行うことはできない。
即ち、図７に矢印Ｈ，Ｉで示すように、地上給電設備（非接触式給電システム）は、蓄電池８１を充電しているときには、負荷稼動エネルギをも賄う必要がある。また、図８に矢印Ｊ，Ｋで示すように、蓄電池８１が放電しているときは、地上給電設備（非接触式給電システム）のエネルギは行き場がないか、若しくは、負荷の稼動用エネルギとして充当されるため、地上給電設備（非接触式給電システム）としてのエネルギ供給は負荷の状況や蓄電池８１の状態に依存して変動する。
このため、ピーク電力を保証する大容量の地上給電設備（非接触式給電システム）が必要となり、実用化への大きな妨げとなっている。
これに対して、本実施の形態例の給電装置３２では、上記の如く、２つの蓄電池４５，４６を有し、２つの蓄電池４５，４６の１つ（蓄電池４５（又は蓄電池４６））によりＲＴＧ１８の負荷に電力し、他の蓄電池４６（又は蓄電池４５）は蓄電池給電手段（非接触式給電システム、接触式の地上給電設備、発電設備９１）へ接続して前記蓄電池給電手段からの供給電力を充電する充電可能状態であり、前記放電状態の蓄電池４５（又は蓄電池４６）の放電と前記充電可能状態の蓄電池４６（又は蓄電池４５）の充電とを同時に行うことを可能とし、且つ、前記放電状態の蓄電池４５（又は蓄電池４６）を充電可能状態に切り替えると同時に前記充電可能状態の蓄電池４６（又は蓄電池４５）を放電状態に切り替える蓄電池切替えを、繰り返し行なう方式としたことにより、非接触式給電システムの大幅な小型化を図ることができ、非接触式給電システムを用いた地上給電が実現可能となる。 Here, the effect of the present invention will be described in more detail with reference to FIGS.
If the circuit configuration of the conventional hybrid RTG is applied as it is, a circuit is configured by one storage battery 81 as in the reference examples of FIGS. 7 and 8, so that charging and discharging in the storage battery 81 can be performed simultaneously. Can not.
That is, as indicated by arrows H and I in FIG. 7, the ground power supply facility (non-contact power supply system) needs to cover the load operating energy when charging the storage battery 81. Further, as indicated by arrows J and K in FIG. 8, when the storage battery 81 is discharged, the energy of the ground power supply facility (non-contact power supply system) has no place to go, or as the operating energy of the load Therefore, the energy supply as ground power supply equipment (non-contact power supply system) varies depending on the load condition and the state of the storage battery 81.
For this reason, a large-capacity ground power supply facility (non-contact power supply system) that guarantees peak power is required, which is a great hindrance to practical use.
On the other hand, the power supply device 32 according to the present embodiment has two storage batteries 45 and 46 as described above, and the RTG 18 is provided by one of the two storage batteries 45 and 46 (storage battery 45 (or storage battery 46)). The other storage battery 46 (or storage battery 45) is connected to storage battery power supply means (non-contact power supply system, contact-type ground power supply facility, power generation equipment 91) to supply power supplied from the storage battery power supply means. It is a chargeable state to be charged, it is possible to simultaneously discharge the storage battery 45 (or storage battery 46) in the discharge state and the storage battery 46 (or storage battery 45) in the chargeable state, and the discharge state Storage battery 45 (or storage battery 46) is switched to a chargeable state, and at the same time, the storage battery switching to switch the storage battery 46 (or storage battery 45) in the chargeable state to a discharge state is repeated. By was scheme performed, it is possible to achieve a significant reduction in size of the noncontact-type power feeding system, ground power feeding using a noncontact-type power feeding system can be realized.

図９にはＲＴＧ１８のコンテナ荷役におけるエネルギ消費（図９の正側の電力）、エネルギ発生（図９の負側の電力）の様子を示す。図９において、ａ部は巻下げ直前に一旦、制動状態において巻上げ用電動機２８でスプレッダ３１の巻上げ動作を行なったときのエネルギ消費、ｂ部は巻上げ用電動機２８でスプレッダ３１の巻下げたときのエネルギ発生（回生電力）、ｃ部は巻上げ用電動機２８でコンテナ１３を巻上げたときのエネルギ消費、ｄ部は横行用電動機２９でトロリ２２を横行させたときのエネルギ消費、ｅ部は巻上げ用電動機２８でコンテナ１３の巻下げたときのエネルギ消費（回生電力）、ｆは巻上げ用電動機２８でスプレッダ３１の巻上げたときのエネルギ消費、ｇ部は走行用電動機２５Ａ〜２５ＤでＲＴＧ１８を走行させたときのエネルギ消費であり、ａ部〜ｇ部までがコンテナ荷役の１サイクル（１作業単位）である。   FIG. 9 shows the state of energy consumption (positive power in FIG. 9) and energy generation (negative power in FIG. 9) in container handling of the RTG 18. In FIG. 9, a portion is energy consumption when the spreader 31 is hoisted by the hoisting motor 28 in the braking state, just before the lowering, and b portion is when the spreader 31 is lowered by the hoisting motor 28. Energy generation (regenerative power), part c is energy consumption when the container 13 is wound up by the hoisting motor 28, part d is energy consumption when the trolley 22 is traversed by the traverse motor 29, and part e is the hoisting motor Energy consumption (regenerative power) when the container 13 is unwound at 28, f is energy consumption when the spreader 31 is wound up by the hoisting motor 28, and g is when the RTG 18 is run by the running motors 25A to 25D The energy consumption of No. 1 to No. g is one cycle (one work unit) of container handling.

図９に示すように、負荷が要求するエネルギ消費は最大で３００ｋＷ超に達するが、コンテナ荷役１サイクルで平均してみると、３０ｋＷ程度のエネルギ消費に過ぎないことが分かる。このコンテナ巻上げ巻下げ巻下げや、定常周期的に発生する横行及び走行に必要なエネルギ（３０ｋＷ）に、各蓄電池４５，４６のエネルギロスを考慮しても、おおよそ４５ｋＷ程度のエネルギを定常的に補給する事ができれば、エネルギの需給はバランスすると想定される。従って、蓄電池４５，４６は一時的に３００ｋＷ超のピーク電力を放電する必要があるが、平均的には３０ｋＷ程度の電力を放電すればよい。   As shown in FIG. 9, the energy consumption required by the load reaches a maximum of more than 300 kW, but it can be seen that the average energy consumption in one cycle of container handling is only about 30 kW. Even if the energy loss of each of the storage batteries 45 and 46 is taken into consideration for the energy (30 kW) required for this container winding / lowering / lowering, traversing periodically generated and traveling (30 kW), the energy of about 45 kW is constantly applied. If it can be replenished, energy supply and demand are assumed to be balanced. Therefore, the storage batteries 45 and 46 need to temporarily discharge a peak power exceeding 300 kW, but on average, it is sufficient to discharge a power of about 30 kW.

このため、本実施の形態例の給電装置３２では、負荷の消費エネルギの平均（３０ｋＷ程度）に加えて、蓄電池４５，４６のエネルギロスを考慮した電力（４５ｋＷ程度）を定常的に補給できる（即ち一定した低電力で蓄電池４５，４６を充電できる）蓄電池給電手段（非接触式給電システム、接触式の地上給電設備、発電設備９１）があれば、稼動エネルギを十分に賄うことが可能となる。
この結果、現在、給電容量や設備費用の面から実用化が困難とされている非接触式給電システムにおいても、フル電池ＲＴＧ１８の実現が可能になる。この非接触式地上給電フル電池ＲＴＧ１８の実現が最も将来性が高いと考えられるが、勿論、これだけではなく、小型の発電設備９１を搭載した究極のハイブリッドＲＴＧ１８や、小容量地上給電式電動ＲＴＧ１８の実現も可能になる。 For this reason, in the power feeding device 32 of the present embodiment, in addition to the average of the energy consumption of the load (about 30 kW), electric power (about 45 kW) considering the energy loss of the storage batteries 45 and 46 can be replenished constantly ( In other words, if there is a storage battery power supply means (non-contact type power supply system, contact type ground power supply facility, power generation facility 91) that can charge the storage batteries 45 and 46 with constant low power, it is possible to sufficiently cover the operating energy. .
As a result, the full battery RTG 18 can be realized even in a contactless power supply system that is currently difficult to put into practical use in terms of power supply capacity and equipment costs. The realization of this non-contact type ground-fed full battery RTG18 is considered to have the highest potential, but of course, not only this but also the ultimate hybrid RTG18 equipped with a small power generation facility 91 and the small-capacity ground-fed electric RTG18 Realization is also possible.

なお、上記では２つの蓄電池４５，４６を用いる場合について説明したが、これに限定するものではなく、３つ以上の蓄電池を用いてもよい。３つ以上の蓄電池を用いた場合でも、複数（３つ以上）の蓄電池の少なくとも１つによりＲＴＧの負荷に電力を供給する給電装置であって、他の蓄電池は蓄電池給電手段へ接続して前記蓄電池給電手段からの供給電力を充電する充電可能状態であり、前記放電状態の蓄電池の放電と前記充電可能状態の蓄電池の充電とを同時に行うことを可能とし、且つ、前記放電状態の蓄電池を充電可能状態に切り替えると同時に前記充電可能状態の蓄電池を放電状態に切り替える蓄電池切替えを、繰り返し行なう蓄電池切替え手段を有して成る構成とすればよい。   In addition, although the case where the two storage batteries 45 and 46 were used was demonstrated above, it is not limited to this, You may use three or more storage batteries. Even when three or more storage batteries are used, the power supply device supplies power to the load of the RTG by at least one of a plurality (three or more) of storage batteries, and the other storage batteries are connected to the storage battery power supply means and It is in a chargeable state for charging the power supplied from the storage battery power supply means, and can discharge the storage battery in the discharged state and charge the storage battery in the chargeable state at the same time, and charge the storage battery in the discharged state What is necessary is just to set it as the structure which comprises the storage battery switching means which repeats the storage battery switching which switches the storage battery of the said chargeable state to a discharge state simultaneously with switching to a possible state.

また、上記では地上給電設備（非接触式給電システム）から給電する場合、ＲＴＧ１８が移動するコンテナ蔵置部１７全体に亘って給電ケーブルを敷設しているが、これに限定するものではなく、地上給電設備（非接触式給電システム）の充電ポイントを、荷役ポイントに対応した数だけ（例えば１００荷役ポイントに対して１０充電ポイント）、コンテナ蔵置部１７に設けてもよい。
また、本発明の給電装置はＲＴＧに適用して有用なものであるが、ＲＴＧ以外の搬送機械（例えば所定のエリア内を移動するＡＧＶなど）にも適用することができる。 Further, in the above description, when power is supplied from the ground power supply facility (non-contact power supply system), the power supply cable is laid throughout the container storage unit 17 to which the RTG 18 moves. However, the present invention is not limited to this. The number of charging points of the facility (non-contact power supply system) may be provided in the container storage unit 17 by the number corresponding to the handling point (for example, 10 charging points for 100 handling points).
The power supply apparatus of the present invention is useful when applied to RTG, but can also be applied to a transport machine other than RTG (for example, AGV moving within a predetermined area).

本発明は給電装置及びこれを備えたタイヤ式門型クレーンに関するものであり、特に非接触式給電システムを用いた非接触式給電フル電池ＲＴＧを実現する場合などに適用して有用なものである。   The present invention relates to a power feeding device and a tire-type portal crane equipped with the same, and is particularly useful when applied to a non-contact power feeding full battery RTG using a non-contact power feeding system. .

１１ コンテナターミナル
１２ コンテナ船
１３ コンテナ
１４ ガントリクレーン（ＧＣ）
１５ コンテナヤード
１６ 自動搬送台車（ＡＧＶ）
１７ コンテナ蔵置部
１８ タイヤ式門型クレーン（ＲＴＧ）
２１ ガントリ
２１Ａ 梁
２１Ｂ 脚部
２１Ｃ 支持台
２２ トロリ
２３Ａ，２３Ｂ，２３Ｃ，２３Ｄ 台車
２４Ａ，２４Ｂ，２４Ｃ，２４Ｄ タイヤ
２５Ａ，２５Ｂ，２５Ｃ，２５Ｄ 走行用電動機
２６ 給電ケーブル
２７ 巻上げ機
２８ 巻上げ用電動機
２９ 横行用電動機
３０ ワイヤロープ
３１ スプレッダ
３２ 給電装置
４１ 充電盤
４２ 地上変圧器
４３ 地上高圧盤
４４ 受電部
４５，４６ 蓄電池
４７ 蓄電池切替えスイッチ
４７ａ 第１接点
４７ｂ 第２接点
４８ 蓄電池切替えスイッチ
４８ａ 第１接点
４８ｂ 第２接点
４９，５０，５１，５２，５３，５４ インバータユニット
５５，５６，５７，５８，５９，６０ コンバータ
６１，６２，６３，６４，６５，６６ インバータ
６７，６８，６９，７０，７１，７２，７３ 電磁開閉器
７４ リアクトル
７５ 変圧器
７６ 補機
７７ 制御装置
８１ 蓄電池
９１ 給電装置
９２ コンバータ 11 Container terminal 12 Container ship 13 Container 14 Gantry crane (GC)
15 Container yard 16 Automatic transport cart (AGV)
17 Container storage 18 Tire type portal crane (RTG)
21 Gantry 21A Beam 21B Leg 21C Support base 22 Trolley 23A, 23B, 23C, 23D Bogie 24A, 24B, 24C, 24D Tire 25A, 25B, 25C, 25D Electric motor for traveling 26 Power supply cable 27 Winding machine 28 Electric motor for hoisting 29 Electric motor 30 Wire rope 31 Spreader 32 Power feeding device 41 Charging panel 42 Ground transformer 43 Ground high voltage panel 44 Power receiving unit 45, 46 Storage battery 47 Storage battery switching switch 47a First contact 47b Second contact 48 Storage battery switching switch 48a First contact 48b First 2-contact 49, 50, 51, 52, 53, 54 Inverter unit 55, 56, 57, 58, 59, 60 Converter 61, 62, 63, 64, 65, 66 Inverter 67, 68, 69, 70, 71, 72 , 73 Electromagnetic switch 4 reactor 75 transformer 76 accessory 77 controller 81 storage battery 91 power supply device 92 converter

Claims (5)

搬送機械に設置され、複数の蓄電池を有し、前記複数の蓄電池の少なくとも１つにより前記搬送機械の負荷に電力を供給する給電装置であって、
他の蓄電池は蓄電池給電手段へ接続して前記蓄電池給電手段からの供給電力を充電する充電可能状態であり、前記放電状態の蓄電池の放電と前記充電可能状態の蓄電池の充電とを同時に行うことを可能とし、
且つ、前記放電状態の蓄電池を充電可能状態に切り替えると同時に前記充電可能状態の蓄電池を放電状態に切り替える蓄電池切替えを、繰り返し行なう蓄電池切替え手段を、
有して成ることを特徴とする給電装置。 A power supply device installed in a transport machine, having a plurality of storage batteries, and supplying power to a load of the transport machine by at least one of the plurality of storage batteries,
The other storage battery is connected to the storage battery power supply means and is in a chargeable state in which the power supplied from the storage battery power supply means is charged, and discharging the storage battery in the discharged state and charging the storage battery in the chargeable state are performed simultaneously. Made possible
And the storage battery switching means for repeatedly switching the storage battery that switches the storage battery in the chargeable state to the discharge state simultaneously with switching the storage battery in the discharged state to the chargeable state,
A power supply apparatus comprising: 請求項１に記載の給電装置において、
前記蓄電池切替え手段は、残留容量検出手段によって検出される前記放電状態の蓄電池の残留容量が閾値以下になったときに前記蓄電池切替えを行なう、又は、一定時間毎に前記蓄電池切替えを行なう構成であることを特徴とする給電装置。 In the electric power feeder of Claim 1,
The storage battery switching means is configured to switch the storage battery when the remaining capacity of the discharged storage battery detected by the remaining capacity detection means is equal to or less than a threshold value, or to switch the storage battery at regular intervals. A power supply apparatus characterized by that. 請求項２に記載の給電装置において、
前記蓄電池の残留容量閾値は、前記搬送機械の１作業単位を完了させるだけの給電が可能な残留容量であること特徴とする給電装置。 In the electric power feeder of Claim 2,
The power storage apparatus according to claim 1, wherein the remaining capacity threshold value of the storage battery is a remaining capacity capable of supplying power only to complete one work unit of the transport machine. 請求項１〜３の何れか１項に記載の給電装置において、
前記蓄電池給電手段は、非接触式給電システム、又は、接触式の地上給電設備、又は、前記搬送機械に搭載した発電設備であることを特徴とする給電装置。 In the electric power feeder of any one of Claims 1-3,
The power supply device, wherein the storage battery power supply means is a non-contact power supply system, a contact ground power supply facility, or a power generation facility mounted on the transfer machine. タイヤを駆動する走行用電動機と、被搬送物の巻上げ巻下げを行なう巻上げ用電動機と、トロリを横行させる横行用電動機とを、負荷として有するタイヤ式門型クレーンにおいて、
請求項１〜４の何れか１項に記載の給電装置を備え、この給電装置における放電状態の蓄電池から前記負荷へ電力を供給する構成であることを特徴とするタイヤ式門型クレーン。 In a tire-type portal crane having as a load, a traveling motor for driving a tire, a winding motor for winding and unwinding a conveyed object, and a traversing motor for traversing a trolley,
A tire-type portal crane comprising the power feeding device according to any one of claims 1 to 4, wherein power is supplied to the load from a storage battery in a discharged state in the power feeding device.
JP2010025041A 2010-02-08 2010-02-08 Power feeding device and tire type gantry crane including the same Pending JP2011162287A (en)

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