WO2012098700A1 - Crane power-feed cable reel device and crane provided therewith - Google Patents

Crane power-feed cable reel device and crane provided therewith Download PDF

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Publication number
WO2012098700A1
WO2012098700A1 PCT/JP2011/060092 JP2011060092W WO2012098700A1 WO 2012098700 A1 WO2012098700 A1 WO 2012098700A1 JP 2011060092 W JP2011060092 W JP 2011060092W WO 2012098700 A1 WO2012098700 A1 WO 2012098700A1
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WIPO (PCT)
Prior art keywords
crane
cable reel
power
power supply
cable
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Application number
PCT/JP2011/060092
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French (fr)
Japanese (ja)
Inventor
伸郎 吉岡
下津　利仁
俊彦 阪本
克明 森田
豊原　尚
Original Assignee
三菱重工業株式会社
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Application filed by 三菱重工業株式会社 filed Critical 三菱重工業株式会社
Priority to CN201180028296.2A priority Critical patent/CN103052588B/en
Publication of WO2012098700A1 publication Critical patent/WO2012098700A1/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

Definitions

  • the present invention relates to a power feeding cable reel device for a crane suitable for a crane that transports a container in a container yard in a harbor where a large number of box-shaped containers are installed, and a crane equipped with the same.
  • a container yard such as a port
  • many containers are installed before being loaded onto the ship and unloaded from the ship.
  • These containers are a plurality of stacked containers stacked upward, and each stacked container is arranged for each lane according to a predetermined arrangement.
  • a self-propelled portal crane such as RTG (Rubber Tired Gantry Crane) as shown in Patent Document 1 is arranged so as to straddle the lane.
  • RTG Rubber Tired Gantry Crane
  • AGV Automatic Guided Vehicle
  • Such cranes such as RTG conventionally generate electricity with an engine generator mounted on the crane and supply power to the traveling motor and cargo handling motor of the crane.
  • a hybrid power supply system equipped with a battery in addition to an engine generator is being put into practical use due to a demand for reducing environmental burden.
  • a cable reel type ground power feeding method in which an engine generator is eliminated and power is supplied to a crane from a power supply provided on the ground via a power feeding cable and a cable reel.
  • FIG. 7 shows a crane 100 which is a cable reel type ground feed type RTG.
  • power is supplied to the crane 100 from a power supply box 101 via a power supply cable 103 and a cable reel 105.
  • the power supply box 101 since the power supply box 101 is fixedly installed on the ground, the power supply box 101 needs to be installed at a position corresponding to the position of the cable reel 105 installed in the crane 100.
  • the power supply box 101 that supplies power to another crane 100 that operates in the lane adjacent to the transverse direction Y of the crane 100 cannot be used for both the cranes 100. Arrangement is required, which increases the cost, which is not preferable.
  • the voltage of the power supplied from the power supply box 101 is a high voltage such as AC6600V class. This is because about 350 kW of electric power is required in consideration of the maximum load of the crane 100. Therefore, the diameter of the feeding cable 103 is also thick due to the high voltage specification, and accordingly, the diameter of the cable reel 105 is also increased and the size is increased. For this reason, when installing in the running direction X (see FIG. 7), a large steel structure is required to maintain the weight of the apparatus, and the amount of the cable reel 105 protruding in the running direction X increases. Since the amount that cannot be moved to the lane edge increases, there arises a problem that the area efficiency of the container storage is lowered. Therefore, as shown in FIG.
  • the cable reel 105 has to be installed so as to project outward in the transverse direction Y perpendicular to the traveling direction X.
  • the separation interval with another crane 100 operating in the lateral direction Y side of the crane 100 is set as narrow as possible, so that it projects outside the lateral direction Y.
  • the situation in which the cable reel 105 has to be installed on the cable is a major factor that hinders the practical application of the electric drive by the cable reel power supply type.
  • This invention is made in view of such a situation, Comprising:
  • the power feeding cable reel apparatus for cranes which can be electrically fed to a crane irrespective of the installation position of a power supply (power feeding box), and a crane provided with the same
  • the purpose is to provide.
  • the present invention installs a cable reel so as to extend in the traveling direction in order to enable the electric power supply of the cable reel even in a container yard where the distance between cranes adjacent to each other in the traveling direction is relatively narrow. Provide a crane that can.
  • the crane feeding cable reel device of the present invention and a crane equipped with the same employ the following means. That is, the crane power supply cable reel device according to the first aspect of the present invention includes a cable reel around which a power supply cable led from a ground-side power supply is wound, and a power supply cable wound around the cable reel. A connector used when power is supplied to the crane side, and a connection portion on which the cable reel and the connector are mounted and detachable from the crane are provided.
  • a crane power supply cable reel device equipped with a cable reel around which a power supply cable led from a ground-side power supply is wound and a connector used to supply power from the power supply cable to the crane is mounted. It was decided to be detachable from the crane by the connecting part. Thereby, even if the position of the power supply on the ground side is a position far from the power supply cable reel device attached to the crane, the power supply cable reel device is removed and the desired position close to the power supply Therefore, power can be supplied to the crane regardless of the position of the power supply.
  • connection portion is formed with a connection opening into which a protruding portion projecting outward from the leg portion of the crane can be inserted. It is good as a structure.
  • the crane power supply cable reel device can be easily fixed to the crane because the crane power supply cable reel device can be fixed by inserting the protruding portion protruding from the crane leg into the connection opening provided in the connection portion. Can be relocated.
  • a forklift insertion hole into which a forklift claw can be inserted is formed in the connection portion, and the connection portion is inserted from the forklift insertion hole.
  • a lock mechanism is provided which is retracted by a forklift claw and is advanced when the forklift claw is retracted and engages with the protruding portion of the crane.
  • the forklift claw can be inserted into the connecting part so that the crane power cable reel device can be transported.
  • a lock mechanism is provided that fixes and releases the connecting portion with respect to the protruding portion of the crane by a lock mechanism that retreats and advances according to insertion and withdrawal of the forklift claw.
  • the crane power supply cable reel device can be fixed and released at the same time in a series of operations in which the crane power supply cable reel device is attached to or removed from the crane by the forklift, thereby improving workability.
  • the crane according to the second aspect of the present invention includes the crane power supply cable reel device described in any of the above.
  • the power supply cable reel device can be attached to and detached from the crane, power can be supplied to the crane regardless of the position of the power supply on the ground side.
  • a crane includes a power storage device that stores power supplied via the power supply cable, and charging of the power storage device according to fluctuations in power consumed by the crane.
  • a charging / discharging control device for controlling discharge, peak cutting of the feeding power from the feeding cable can be achieved, for example, low voltage power of AC 600 V or less can be supplied via the feeding cable, and the feeding cable
  • the cable reel is provided so as to project in the traveling direction of the crane.
  • the power supplied from the power supply cable can be suppressed to a low voltage of, for example, AC 600 V or less.
  • a relatively thick power supply cable having a high voltage specification such as the AC6600V class as the conventional power supply cable
  • the diameter of the cable reel can be reduced and the size can be reduced. Therefore, even in a container yard where the distance between the cranes adjacent to each other in the traveling direction is narrow, the cable reel can be provided so as to protrude in the traveling direction of the crane, and the transverse direction (direction perpendicular to the traveling direction) as in the past. There is no need to project the cable reel to the outside.
  • the crane power supply cable reel device can be attached to and detached from the crane, power can be supplied to the crane regardless of the installation position of the power supply on the ground side.
  • the power supply cable is made to have a low voltage specification by the charge / discharge device and the cable reel is miniaturized, even in a container yard where the distance between cranes adjacent to each other in the traveling direction is relatively narrow, the cable reel is extended in the traveling direction and installed. can do.
  • FIG. 3 is a side view of the cable reel device of FIG. 2. It is the perspective view which showed the detail around the slip ring apparatus of the cable reel apparatus of FIG. It is the side view which showed the state which the engagement piece of the cable reel apparatus of FIG. It is a side view which shows the process of installing a cable reel apparatus with respect to a crane, and shows the state before installation. It is a side view which shows the process of installing a cable reel apparatus with respect to a crane, and shows the state after installation. It is the perspective view which showed RTG of the cable reel type ground feeding system.
  • FIG. 1 shows a crane 1 according to this embodiment.
  • the crane 1 is a ground-fed electric crane that operates with electric power supplied from a power supply box 31 installed on the ground, and does not include an engine generator.
  • the crane 1 includes a crane power supply cable reel device (hereinafter simply referred to as “cable reel device”) 2 according to the present embodiment.
  • the crane 1 is a so-called RTG (Rubber Tired Gantry Crane), and is a portal crane that is self-propelled by a plurality of rubber tires 3.
  • the crane 1 is disposed so as to straddle a lane R in which a plurality of containers (not shown) are stacked in an upward direction and arranged in a predetermined arrangement, and travels in the longitudinal direction of the lane R (travel direction X). To do.
  • the crane 1 includes four traveling devices 5 in each leg portion 11, and four rubber tires 3 are provided in each traveling device 5.
  • the driving of the traveling device 5 is controlled by the traveling control device 7.
  • the travel device 5 is provided with an auto steer sensor 6.
  • the auto steer sensor 6 detects the magnetism from the magnetic guideline 15 laid in the longitudinal direction of the lane R, so that the crane 1 can automatically run straight in the traveling direction X. Yes.
  • the traveling devices 5 that are adjacent to each other in the traveling direction X that is the left-right direction are connected by a lower beam 9, and a traveling control device 7 is installed on the lower beam 9.
  • right and left means the traveling direction of the crane
  • front and rear means the moving direction of the trolley 20 (transverse direction Y). This is determined based on the attitude of the operator in the cab 22 installed in the trolley 20.
  • a bay sensor 8 is provided in a state of facing downward.
  • the bay sensor 8 detects the magnetism from the magnets 16 laid for each bay, which is a unit in the left-right direction of the installed container, whereby the crane 1 can be stopped at the target bay. it can.
  • pillars 10 standing upward are provided.
  • the upper end of each column 10 is connected to the upper end of the column 10 erected from the other lower beam 9 by a girder 12.
  • the two girder 12 are provided in parallel in the left-right direction, and the trolley 20 moves in the front-rear direction (transverse direction Y) on the girder 12.
  • a cab 22 is provided in the trolley 20, and an operator waits in the cab 22 to operate the crane 1.
  • a spreader (hanging tool) 24 is suspended from the trolley 20, and the container is suspended by the spreader 24 while the container is gripped.
  • twist lock pins (not shown) having an enlarged head at the tip are provided at the four corners of the spreader 24 so as to protrude downward, and the enlarged head of each twist lock pin is provided on the upper surface of the container. They are engaged by being rotated while being inserted into holes provided at the four corners. By being suspended by the spreader 24 in this way, the container is moved to each position in accordance with the movement of the trolley 20.
  • the crane 1 includes a battery (power storage device) and a charge / discharge device (not shown).
  • the battery stores the power supplied from the power supply box 31 fixed on the ground via the power supply cable 33 and the cable reel 35.
  • the power supply box 31 is supplied with low-voltage power such as AC460V.
  • the charging / discharging device can control the charging / discharging of the battery to cope with fluctuations in the power consumption of the crane 1 and level the power supply to keep it low.
  • the power supply cable 33 has a low voltage specification such as AC460V
  • the power supply cable 33 has a smaller diameter than a conventional AC6600V class high voltage specification power supply cable. Accordingly, the cable reel 35 is downsized compared to the conventional cable reel.
  • the miniaturized cable reel 35 is installed so as to project toward the traveling direction X side of the crane 1.
  • the cable reel device 2 including the cable reel 35 is detachable from the crane 1. As shown in FIG. 1, a plurality of cranes 1 can be provided. The position of the cable reel device 2 can be changed according to the position of the power supply box 31.
  • the front crane 1 ⁇ / b> F is provided with one cable reel device 2 at each of the left and right legs 11 at the rear, and the rear crane 1 ⁇ / b> R has left and right legs at the front and rear.
  • the cable reel device 2 is provided one by one.
  • the power supply box 31 is located on the left side on the front side. Therefore, the cable reel device 2 is moved to a position close to the power supply box 31, that is, the leg 11 on the left side on the front side.
  • the cable reel device 2 is installed on the rear right leg 11 like the front crane 1F, as shown by the arrow A, the cable reel device 2 is moved from the rear right side to the front left side.
  • the cable reel device 2 is moved in the direction.
  • a protruding beam (protruding portion) 13 for fixing the cable reel device 2 is provided on the leg portion 11 below the pillar 10 of the crane 1 so as to protrude in the horizontal direction. A method of fixing the cable reel device 2 using the protruding beam 13 will be described later.
  • the cable reel device 2 includes a cable reel 35 that winds the power supply cable 33, a rotary shaft body 37 that supports the rotation center of the cable reel 35, an electric motor 39 that rotationally drives the rotary shaft body 37, and the power supply cable 33. And a connector 41 for supplying the supplied power to the crane 1 side.
  • the electric motor 39 drives the rotary shaft 37 through the speed reducer 43.
  • the electric motor 39 operates so that a predetermined tension is applied to the power supply cable 33 so that the power supply cable 33 is not loosened when the power supply cable 33 is unwound, and when the power supply cable 33 is wound, the cable reel 35 is moved in the winding direction. Rotation is driven with a predetermined torque.
  • the electric power supplied from the power supply cable 33 is supplied to the connector 41 via the slip ring device 45.
  • the slip ring device 45 is provided with a slip ring 45a for each of the wires branched into three phases from the power supply cable 33, and the brushes 45b corresponding to these slip rings 45a are provided.
  • the three-phase power is led to the connector 41.
  • the connector 41 is connected to a connector (not shown) on the crane side.
  • a cable guide 47 is provided for the power supply cable 33 guided from the ground.
  • connection stand 51 includes leg portions 53 provided upright at four corners, and a lower base plate 55 and an upper base plate 57 fixed horizontally to the leg portions 53. On the upper base plate 57, a reduction gear 43 and a slip ring device 45 are fixedly installed.
  • An opening 59 is formed between the upper base plate 57 and the lower base plate 55.
  • the opening 59 is a connection opening for fixing the cable reel device 2 to the crane 1. Specifically, as shown in FIG. 3, the protruding beam 13 that protrudes outward in the traveling direction X from the lower leg portion 11 of the column 10 of the crane 1 can be inserted into the opening 59. ing.
  • the lower base plate 55 is provided with a lock mechanism for fixing the cable reel device 2 to the protruding beam 13.
  • the lock mechanism includes a plurality of engagement pieces 61 and is normally biased by a biasing member such as a spring so as to advance upward.
  • FIG. 3 shows a locked state in which the engagement piece 61 is advanced upward and engaged with an engagement groove formed on the lower surface of the protruding beam 13.
  • a forklift insertion hole 63 into which a forklift claw can be inserted is formed on the side surface of the lower base plate 55.
  • FIG. 6A and 6B show a method of fixing the cable reel device 2 to the crane 1.
  • the cable reel device 2 can be conveyed by a forklift, and as shown in FIG. 6A, the forklift pawl 65 is inserted into the forklift insertion hole 63 (see FIG. 2) of the lower base plate 55.
  • the cable reel device 2 is lifted.
  • the engaging piece 61 is retracted downward by the forklift pawl 65, and the locked state is released.
  • the forklift is moved closer to the crane 1 side, and the protruding beam 13 is inserted into the opening 59 of the cable reel device 2. Thereafter, as shown in FIG.
  • the forklift is retracted away from the crane 1, and the pawl 65 is removed from the forklift insertion hole 63.
  • the engaging piece 61 is advanced upward by the urging force and is engaged with the protruding beam 13 to be locked.
  • Crane power supply cable reel device comprising a cable reel 35 around which a power supply cable 33 led from a power supply box 31 on the ground side is wound, and a connector 41 used when power from the power supply cable 33 is supplied to the crane 1 side. 2 can be attached to and detached from the crane 1 by the connection stand 51 on which these are mounted. As a result, even when the position of the power supply box 31 on the ground side is far from the power supply cable reel device 2 attached to the crane 1, the power supply box 31 is removed by removing the power supply cable reel device 2. Therefore, it is possible to supply power to the crane regardless of the position of the power supply box 31.
  • the cable reel device 2 can be fixed by inserting the protruding beam 13 protruding from the leg portion 11 of the crane 1 into the opening 59, it can be easily moved to the crane 1.
  • the forklift insertion hole 63 in the lower base plate 55 of the connection base 51, the forklift claw 65 is inserted into the forklift insertion hole 63 so that the cable reel device 2 can be transported.
  • saves and advances according to insertion and withdrawal of the pawl 65 of the forklift is provided.
  • the cable reel device 2 can be fixed and released at the same time in a series of operations in which the cable reel device 2 is attached to or removed from the crane 1 by a forklift, thereby improving workability.
  • the power supplied from the power supply cable 33 is set to AC460V, and the power consumed by the crane 1 is I tried to suppress it.
  • the power supplied from the power supply cable 33 is set to AC460V, and the power consumed by the crane 1 is I tried to suppress it.
  • the diameter of the cable reel 35 can be reduced and the size can be reduced. Therefore, even in a container yard where the distance between the cranes 1F and 1R (see FIG. 1) adjacent in the transverse direction is narrow, the cable reel 35 can be provided so as to project in the traveling direction X of the crane 1, as in the conventional case. Therefore, it is not necessary to project the cable reel outside the transverse direction Y.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

Provided is a crane power-feed cable reel device that can feed power to a crane regardless of where a power supply is installed. Said device is provided with: a cable reel (35) around which a power-feed cable (33) is wound, said power-feed cable running from a power-feed box installed on the ground; a connector used when supplying power to the crane from the power-feed cable (33) wound around the cable reel (35); and a connection mount (51) on which the cable reel (35) and connector are mounted, said connection mount being removably attachable to the crane. An opening (59) into which a protruding beam (13) can be inserted is formed in the connection mount (51), said protruding beam protruding outwards from a leg (11) of the crane with respect to the direction of travel.

Description

クレーン用給電ケーブルリール装置およびこれを備えたクレーンCrane feeding cable reel device and crane equipped with the same
　本発明は、例えば、箱型形状のコンテナが多数設置される港湾のコンテナヤードにてコンテナを搬送するクレーンに設けられて好適なクレーン用給電ケーブルリール装置およびこれを備えたクレーンに関するものである。 The present invention relates to a power feeding cable reel device for a crane suitable for a crane that transports a container in a container yard in a harbor where a large number of box-shaped containers are installed, and a crane equipped with the same.
　港湾等のコンテナヤードでは、船舶へ積み込む前のコンテナや、船舶から積み下ろされたコンテナが多数設置されている。これらコンテナは、上方へ複数積み上げられた段積みコンテナとされ、各段積みコンテナが所定配列に従ってレーンごとに並べられている。各レーンには、レーンを跨ぐように、特許文献１に示されたようなＲＴＧ（Ｒｕｂｂｅｒ　Ｔｉｒｅｄ　Ｇａｎｔｒｙ　ｃｒａｎｅ）等の自走式の門型クレーンが配置されている。この門型クレーンによって、レーン内を走行するトレーラやＡＧＶ（Ａｕｔｏｍａｔｉｃ　Ｇｕｉｄｅｄ　Ｖｅｈｉｃｌｅ）とのコンテナの受け渡しが行われ、また、レーン内のコンテナの設置等が行われる。 In a container yard such as a port, many containers are installed before being loaded onto the ship and unloaded from the ship. These containers are a plurality of stacked containers stacked upward, and each stacked container is arranged for each lane according to a predetermined arrangement. In each lane, a self-propelled portal crane such as RTG (Rubber Tired Gantry Crane) as shown in Patent Document 1 is arranged so as to straddle the lane. With this portal crane, the container is transferred to and from the trailer traveling in the lane and AGV (Automatic Guided Vehicle), and the container is installed in the lane.
　このようなＲＴＧ等のクレーンは、従来、クレーンに搭載されたエンジン発電機にて発電し、クレーンの走行モータや荷役モータに電力を供給している。近年の環境負荷低減の要請から、エンジン発電機に加えてバッテリを搭載したハイブリッド電源方式が実用化されつつある。さらに、環境負荷の低減を進める方式として、エンジン発電機を廃し、地上に設けた給電源から給電ケーブルおよびケーブルリールを介してクレーンに電力を供給するケーブルリール式地上給電方式がある。 Such cranes such as RTG conventionally generate electricity with an engine generator mounted on the crane and supply power to the traveling motor and cargo handling motor of the crane. In recent years, a hybrid power supply system equipped with a battery in addition to an engine generator is being put into practical use due to a demand for reducing environmental burden. Further, as a method for reducing the environmental load, there is a cable reel type ground power feeding method in which an engine generator is eliminated and power is supplied to a crane from a power supply provided on the ground via a power feeding cable and a cable reel.
特開２００７－１４５４４４号公報JP 2007-145444 A
　図７には、ケーブルリール式地上給電方式のＲＴＧとされたクレーン１００が示されている。同図に示されているように、クレーン１００には、給電ボックス１０１から給電ケーブル１０３及びケーブルリール１０５を介して電力が供給されるようになっている。
　しかし、給電ボックス１０１は地上に固定的に設置されているものであるため、クレーン１００に設備されるケーブルリール１０５の位置に対応する位置に給電ボックス１０１が設備される必要がある。この場合、クレーン１００の横行方向Ｙに隣り合うレーンで稼働する別のクレーン１００に給電する給電ボックス１０１は、この両方のクレーン１００に対して供用する事ができず、各々専用の給電ボックス１０１の配置が必要となり、コストの増大を招くことになるため好ましくない。 FIG. 7 shows a crane 100 which is a cable reel type ground feed type RTG. As shown in the figure, power is supplied to the crane 100 from a power supply box 101 via a power supply cable 103 and a cable reel 105.
However, since the power supply box 101 is fixedly installed on the ground, the power supply box 101 needs to be installed at a position corresponding to the position of the cable reel 105 installed in the crane 100. In this case, the power supply box 101 that supplies power to another crane 100 that operates in the lane adjacent to the transverse direction Y of the crane 100 cannot be used for both the cranes 100. Arrangement is required, which increases the cost, which is not preferable.
　給電ボックス１０１から供給される電力の電圧はＡＣ６６００Ｖ級といった高電圧とされている。これは、クレーン１００の最大負荷を考慮すると３５０ｋＷ程度の電力が必要とされるからである。したがって、給電ケーブル１０３の径も高電圧仕様のため太くなり、これに伴い、ケーブルリール１０５の直径も大きくなり大型化してしまう。
　このため、走行方向Ｘ（図７参照）に張り出して設置する場合、装置重量を保持するための大掛かりな鉄骨構造が必要となり、かつケーブルリール１０５の走行方向Ｘへの張り出し量が大きくなるため、レーン端へ寄りきれない量が大きくなるために、コンテナ蔵置の面積効率を低下させてしまう問題が発生する。そのため、図７に示すように、走行方向Ｘに直行する横行方向Ｙの外側に張り出すようにケーブルリール１０５を設置せざるを得ない。コンテナ蔵置の面積効率の観点から、クレーン１００の横行方向Ｙ側方で稼働する別のクレーン１００との離合間隔も可及的に狭く設定されている中で、横行方向Ｙの外側に張り出すようにケーブルリール１０５を設置せざるを得ない状況は、ケーブルリール給電式による電動化の実用化を阻害する大きな要因となっている。 The voltage of the power supplied from the power supply box 101 is a high voltage such as AC6600V class. This is because about 350 kW of electric power is required in consideration of the maximum load of the crane 100. Therefore, the diameter of the feeding cable 103 is also thick due to the high voltage specification, and accordingly, the diameter of the cable reel 105 is also increased and the size is increased.
For this reason, when installing in the running direction X (see FIG. 7), a large steel structure is required to maintain the weight of the apparatus, and the amount of the cable reel 105 protruding in the running direction X increases. Since the amount that cannot be moved to the lane edge increases, there arises a problem that the area efficiency of the container storage is lowered. Therefore, as shown in FIG. 7, the cable reel 105 has to be installed so as to project outward in the transverse direction Y perpendicular to the traveling direction X. From the viewpoint of area efficiency of container storage, the separation interval with another crane 100 operating in the lateral direction Y side of the crane 100 is set as narrow as possible, so that it projects outside the lateral direction Y. The situation in which the cable reel 105 has to be installed on the cable is a major factor that hinders the practical application of the electric drive by the cable reel power supply type.
　本発明は、このような事情に鑑みてなされたものであって、給電源（給電ボックス）の設置位置に関わらずクレーンに給電することができるクレーン用給電ケーブルリール装置およびこれを備えたクレーンを提供することを目的とする。
　また、本発明は、走行方向に隣り合うクレーンの間隔が比較的狭いコンテナヤードであっても、ケーブルリール給電式の電動化を可能とするために、ケーブルリールを走行方向に張り出して設置することができるクレーンを提供する。 This invention is made in view of such a situation, Comprising: The power feeding cable reel apparatus for cranes which can be electrically fed to a crane irrespective of the installation position of a power supply (power feeding box), and a crane provided with the same The purpose is to provide.
In addition, the present invention installs a cable reel so as to extend in the traveling direction in order to enable the electric power supply of the cable reel even in a container yard where the distance between cranes adjacent to each other in the traveling direction is relatively narrow. Provide a crane that can.
　上記課題を解決するために、本発明のクレーン用給電ケーブルリール装置およびこれを備えたクレーンは以下の手段を採用する。
　すなわち、本発明の第１の態様にかかるクレーン用給電ケーブルリール装置は、地上側の給電源から導かれる給電ケーブルが巻回されるケーブルリールと、該ケーブルリールに巻回された給電ケーブルからの電力をクレーン側に供給する際に用いるコネクタと、前記ケーブルリール及び前記コネクタが搭載され、クレーンに対して着脱可能とされた接続部とを備えている。 In order to solve the above-mentioned problems, the crane feeding cable reel device of the present invention and a crane equipped with the same employ the following means.
That is, the crane power supply cable reel device according to the first aspect of the present invention includes a cable reel around which a power supply cable led from a ground-side power supply is wound, and a power supply cable wound around the cable reel. A connector used when power is supplied to the crane side, and a connection portion on which the cable reel and the connector are mounted and detachable from the crane are provided.
　地上側の給電源から導かれる給電ケーブルが巻回されるケーブルリールと、給電ケーブルからの電力をクレーン側に供給する際に用いるコネクタとを備えたクレーン用給電ケーブルリール装置を、これらを搭載した接続部によって、クレーンに対して着脱可能とすることとした。これにより、地上側の給電源の位置が、クレーンに取り付けられた給電ケーブルリール装置から見て遠い位置とされている場合であっても、給電ケーブルリール装置を取り外して給電源に近い所望の位置に移設することができるので、給電源の位置に関わらずクレーンに電力を供給することができる。 A crane power supply cable reel device equipped with a cable reel around which a power supply cable led from a ground-side power supply is wound and a connector used to supply power from the power supply cable to the crane is mounted. It was decided to be detachable from the crane by the connecting part. Thereby, even if the position of the power supply on the ground side is a position far from the power supply cable reel device attached to the crane, the power supply cable reel device is removed and the desired position close to the power supply Therefore, power can be supplied to the crane regardless of the position of the power supply.
　さらに、本発明の第１の態様にかかるクレーン用給電ケーブルリール装置では、前記接続部には、クレーンの脚部から外方に張り出した突出部が挿入可能とされた接続用開口が形成されている構成としてよい。 Further, in the crane power supply cable reel device according to the first aspect of the present invention, the connection portion is formed with a connection opening into which a protruding portion projecting outward from the leg portion of the crane can be inserted. It is good as a structure.
　クレーンの脚部から張り出した突出部を、接続部に設けた接続用開口に挿入することによってクレーン用給電ケーブルリール装置を固定することができるので、クレーン用給電ケーブルリール装置をクレーンに対して簡便に移設することができる。 The crane power supply cable reel device can be easily fixed to the crane because the crane power supply cable reel device can be fixed by inserting the protruding portion protruding from the crane leg into the connection opening provided in the connection portion. Can be relocated.
　さらに、上記構成のクレーン用給電ケーブルリール装置では、前記接続部には、フォークリフトの爪が挿入可能とされたフォークリフト用挿入穴が形成され、前記接続部は、前記フォークリフト用挿入穴から挿入されたフォークリフトの爪によって退避し、フォークリフトの爪が退出した際に進出してクレーンの前記突出部に係合するロック機構を備えている。 Furthermore, in the power feeding cable reel device for a crane configured as described above, a forklift insertion hole into which a forklift claw can be inserted is formed in the connection portion, and the connection portion is inserted from the forklift insertion hole. A lock mechanism is provided which is retracted by a forklift claw and is advanced when the forklift claw is retracted and engages with the protruding portion of the crane.
　接続部にフォークリフト用挿入穴を形成することによって、接続部にフォークリフトの爪を差し込んでクレーン用給電ケーブルリール装置を搬送することができるようにした。そして、フォークリフトの爪の挿入及び退出に応じて退避及び進出するロック機構によって接続部をクレーンの突出部に対して固定および解除するロック機構を設けることとした。これにより、フォークリフトによってクレーン用給電ケーブルリール装置をクレーンに取り付けたり取り外したりする一連の作業の中で、同時にクレーン用給電ケーブルリール装置を固定および解除することができるので、作業性が向上する。 フ ォ ー ク By forming a forklift insertion hole in the connecting part, the forklift claw can be inserted into the connecting part so that the crane power cable reel device can be transported. Then, a lock mechanism is provided that fixes and releases the connecting portion with respect to the protruding portion of the crane by a lock mechanism that retreats and advances according to insertion and withdrawal of the forklift claw. As a result, the crane power supply cable reel device can be fixed and released at the same time in a series of operations in which the crane power supply cable reel device is attached to or removed from the crane by the forklift, thereby improving workability.
　また、本発明の第２の態様にかかるクレーンは、上記のいずれかに記載されたクレーン用給電ケーブルリール装置を備えている。 The crane according to the second aspect of the present invention includes the crane power supply cable reel device described in any of the above.
　クレーンに対して給電ケーブルリール装置が着脱可能とされているので、地上側の給電源の位置に関わらずクレーンに電力を供給することができる。 Since the power supply cable reel device can be attached to and detached from the crane, power can be supplied to the crane regardless of the position of the power supply on the ground side.
　さらに、本発明の第２の態様にかかるクレーンは、前記給電ケーブルを介して供給される電力を貯蔵する電力貯蔵装置と、当該クレーンにて消費する電力の変動に応じて前記電力貯蔵装置の充放電を制御する充放電制御装置を備える事で、前記給電ケーブルからの給電電力のピークカットを図り、例えばＡＣ６００Ｖ以下の低圧電力が前記給電ケーブルを介して供給される事を可能とし、前記給電ケーブルの径を低減し、ケーブルリールを小型化する事で、前記ケーブルリールは、前記クレーンの走行方向に張り出すように設けられている。 Furthermore, a crane according to a second aspect of the present invention includes a power storage device that stores power supplied via the power supply cable, and charging of the power storage device according to fluctuations in power consumed by the crane. By providing a charging / discharging control device for controlling discharge, peak cutting of the feeding power from the feeding cable can be achieved, for example, low voltage power of AC 600 V or less can be supplied via the feeding cable, and the feeding cable By reducing the diameter of the cable reel and reducing the size of the cable reel, the cable reel is provided so as to project in the traveling direction of the crane.
　クレーンにて消費する電力に応じて電力貯蔵装置の充放電を制御する充放電装置を備えることにより、給電ケーブルから供給される電力を例えばＡＣ６００Ｖ以下とした低電圧に抑えることができる。これにより、給電ケーブルとして、従来のようにＡＣ６６００Ｖ級といった高電圧仕様の比較的太い給電ケーブルを用いる必要が無くなり、ケーブルリールの径を小さくして小型化することができる。したがって、走行方向に隣り合うクレーンの間隔が狭いコンテナヤードであっても、クレーンの走行方向に張り出すようにケーブルリールを設けることができ、従来のように横行方向（走行方向に直交する方向）外側にケーブルリールを張り出す必要がなくなる。 By providing a charging / discharging device that controls charging / discharging of the power storage device according to the power consumed by the crane, the power supplied from the power supply cable can be suppressed to a low voltage of, for example, AC 600 V or less. As a result, it is not necessary to use a relatively thick power supply cable having a high voltage specification such as the AC6600V class as the conventional power supply cable, and the diameter of the cable reel can be reduced and the size can be reduced. Therefore, even in a container yard where the distance between the cranes adjacent to each other in the traveling direction is narrow, the cable reel can be provided so as to protrude in the traveling direction of the crane, and the transverse direction (direction perpendicular to the traveling direction) as in the past. There is no need to project the cable reel to the outside.
　本発明によれば、クレーン用給電ケーブルリール装置をクレーンに対して着脱可能としたので、地上側の給電源の設置位置に関わらずクレーンに給電することができる。
　また、充放電装置によって給電ケーブルを低電圧仕様とし、ケーブルリールを小型化したので、走行方向に隣り合うクレーンの間隔が比較的狭いコンテナヤードであっても、ケーブルリールを走行方向に張り出して設置することができる。 According to the present invention, since the crane power supply cable reel device can be attached to and detached from the crane, power can be supplied to the crane regardless of the installation position of the power supply on the ground side.
In addition, because the power supply cable is made to have a low voltage specification by the charge / discharge device and the cable reel is miniaturized, even in a container yard where the distance between cranes adjacent to each other in the traveling direction is relatively narrow, the cable reel is extended in the traveling direction and installed. can do.
本発明の一実施形態にかかるクレーンを示した斜視図である。It is the perspective view which showed the crane concerning one Embodiment of this invention. 本発明の一実施形態にかかるケーブルリール装置を示した正面図である。It is the front view which showed the cable reel apparatus concerning one Embodiment of this invention. 図２のケーブルリール装置の側面図である。FIG. 3 is a side view of the cable reel device of FIG. 2. 図２のケーブルリール装置のスリップリング装置周りの詳細を示した斜視図である。It is the perspective view which showed the detail around the slip ring apparatus of the cable reel apparatus of FIG. 図２のケーブルリール装置の係合片がフォークリフトの爪によって退避してロック解除となった状態を示した側面図である。It is the side view which showed the state which the engagement piece of the cable reel apparatus of FIG. クレーンに対してケーブルリール装置を設置する工程を示す側面図であり、設置前の状態を示す。It is a side view which shows the process of installing a cable reel apparatus with respect to a crane, and shows the state before installation. クレーンに対してケーブルリール装置を設置する工程を示す側面図であり、設置後の状態を示す。It is a side view which shows the process of installing a cable reel apparatus with respect to a crane, and shows the state after installation. ケーブルリール式地上給電方式のＲＴＧを示した斜視図である。It is the perspective view which showed RTG of the cable reel type ground feeding system.
　以下に、本発明にかかる一実施形態について、図面を参照して説明する。
　図１には、本実施形態にかかるクレーン１が示されている。同図には、横行方向Ｙに隣り合う２つのレーンにそれぞれ設置された２台のクレーン１Ｆ，１Ｒが示されている。クレーン１は、地上に設置された給電ボックス３１から供給された電力によって動作する地上給電方式の電動クレーンとされており、エンジン発電機を備えていない。また、クレーン１は、本実施形態にかかるクレーン用給電ケーブルリール装置（以下、単に「ケーブルリール装置」という。）２を備えている。 Hereinafter, an embodiment according to the present invention will be described with reference to the drawings.
FIG. 1 shows a crane 1 according to this embodiment. In the figure, two cranes 1F and 1R respectively installed in two lanes adjacent in the transverse direction Y are shown. The crane 1 is a ground-fed electric crane that operates with electric power supplied from a power supply box 31 installed on the ground, and does not include an engine generator. The crane 1 includes a crane power supply cable reel device (hereinafter simply referred to as “cable reel device”) 2 according to the present embodiment.
　クレーン１は、いわゆるＲＴＧ（Ｒｕｂｂｅｒ　Ｔｉｒｅｄ　Ｇａｎｔｒｙ　ｃｒａｎｅ）とされ、複数のゴムタイヤ３によって自走する門型のクレーンとされている。クレーン１は、複数のコンテナ（図示せず）が上方に段積みされた段積みコンテナが所定配列をもって設置されたレーンＲを跨ぐように配置され、レーンＲの長手方向（走行方向Ｘ）に走行する。 The crane 1 is a so-called RTG (Rubber Tired Gantry Crane), and is a portal crane that is self-propelled by a plurality of rubber tires 3. The crane 1 is disposed so as to straddle a lane R in which a plurality of containers (not shown) are stacked in an upward direction and arranged in a predetermined arrangement, and travels in the longitudinal direction of the lane R (travel direction X). To do.
　クレーン１は、各脚部１１に４つの走行装置５を備えており、各走行装置５に４つのゴムタイヤ３が設けられている。走行装置５は、走行制御装置７によって、その駆動が制御されるようになっている。走行装置５には、オートステアセンサ６が設けられている。このオートステアセンサ６は、レーンＲの長手方向に敷設された磁気ガイドライン１５からの磁気を検出するようになっており、これにより、クレーン１を走行方向Ｘに自動で直進運転できるようになっている。 The crane 1 includes four traveling devices 5 in each leg portion 11, and four rubber tires 3 are provided in each traveling device 5. The driving of the traveling device 5 is controlled by the traveling control device 7. The travel device 5 is provided with an auto steer sensor 6. The auto steer sensor 6 detects the magnetism from the magnetic guideline 15 laid in the longitudinal direction of the lane R, so that the crane 1 can automatically run straight in the traveling direction X. Yes.
　左右方向である走行方向Ｘに隣り合う走行装置５は、下梁９によって連結されており、この下梁９上に走行制御装置７が設置されている。ここで、左右とはクレーンの走行方向を意味し、前後とはトロリ２０の移動方向（横行方向Ｙ）を意味する。これは、トロリ２０に設置された運転室２２内のオペレータの姿勢を基準として定められたものである。 The traveling devices 5 that are adjacent to each other in the traveling direction X that is the left-right direction are connected by a lower beam 9, and a traveling control device 7 is installed on the lower beam 9. Here, right and left means the traveling direction of the crane, and front and rear means the moving direction of the trolley 20 (transverse direction Y). This is determined based on the attitude of the operator in the cab 22 installed in the trolley 20.
　下梁９の中央には、下方に向けた状態のベイセンサ８が設けられている。このベイセンサ８は、設置されたコンテナの左右方向の単位であるベイ毎に敷設された磁石１６からの磁気を検出するようになっており、これにより、クレーン１を目標のベイに停止させることができる。
　下梁９の両端には、上方に立設する柱１０がそれぞれ設けられている。各柱１０の上端は、もう一方の下梁９から立設された柱１０の上端とガーダ１２によって連結されている。 In the center of the lower beam 9, a bay sensor 8 is provided in a state of facing downward. The bay sensor 8 detects the magnetism from the magnets 16 laid for each bay, which is a unit in the left-right direction of the installed container, whereby the crane 1 can be stopped at the target bay. it can.
At both ends of the lower beam 9, pillars 10 standing upward are provided. The upper end of each column 10 is connected to the upper end of the column 10 erected from the other lower beam 9 by a girder 12.
　ガーダ１２は左右方向に２本並列に設けられており、これらガーダ１２上をトロリ２０が前後方向（横行方向Ｙ）に移動する。トロリ２０には運転室２２が設けられており、この運転室２２内にオペレータが待機し、クレーン１の操作を行う。 The two girder 12 are provided in parallel in the left-right direction, and the trolley 20 moves in the front-rear direction (transverse direction Y) on the girder 12. A cab 22 is provided in the trolley 20, and an operator waits in the cab 22 to operate the crane 1.
　トロリ２０からはスプレッダ（吊具）２４が吊り下げられており、このスプレッダ２４によってコンテナが把持された状態で吊り下げられるようになっている。具体的には、スプレッダ２４の四隅に、先端に拡大頭部を有するツイストロックピン（図示せず）が下方に突出した状態で設けられており、各ツイストロックピンの拡大頭部がコンテナの上面四隅に設けられた穴に挿入された状態で回転させられることによって係合するようになっている。このようにスプレッダ２４によって吊り下げられることにより、コンテナはトロリ２０の移動に応じて各位置に移動させられる。 A spreader (hanging tool) 24 is suspended from the trolley 20, and the container is suspended by the spreader 24 while the container is gripped. Specifically, twist lock pins (not shown) having an enlarged head at the tip are provided at the four corners of the spreader 24 so as to protrude downward, and the enlarged head of each twist lock pin is provided on the upper surface of the container. They are engaged by being rotated while being inserted into holes provided at the four corners. By being suspended by the spreader 24 in this way, the container is moved to each position in accordance with the movement of the trolley 20.
　クレーン１は、図示しないバッテリ（電力貯蔵装置）及び充放電装置を備えている。バッテリは、地上に固定設置された給電ボックス３１から給電ケーブル３３及びケーブルリール３５を介して供給された電力を貯蔵する。給電ボックス３１からは、例えばＡＣ４６０Ｖといった低電圧の電力が供給されるようになっている。充放電装置は、バッテリの充放電を制御することによって、クレーン１の消費電力の変動に対応し、給電電力を平準化して低く抑えることができるようになっている。 The crane 1 includes a battery (power storage device) and a charge / discharge device (not shown). The battery stores the power supplied from the power supply box 31 fixed on the ground via the power supply cable 33 and the cable reel 35. The power supply box 31 is supplied with low-voltage power such as AC460V. The charging / discharging device can control the charging / discharging of the battery to cope with fluctuations in the power consumption of the crane 1 and level the power supply to keep it low.
　給電ケーブル３３は、ＡＣ４６０Ｖといった低電圧仕様とされているので、従来のＡＣ６６００Ｖ級の高電圧仕様の給電ケーブルに比べて小径とされている。これに伴い、ケーブルリール３５は、従来のケーブルリールに比べて小型化されている。このように小型化されたケーブルリール３５は、クレーン１の走行方向Ｘ側に張り出すように設置されている。 Since the power supply cable 33 has a low voltage specification such as AC460V, the power supply cable 33 has a smaller diameter than a conventional AC6600V class high voltage specification power supply cable. Accordingly, the cable reel 35 is downsized compared to the conventional cable reel. The miniaturized cable reel 35 is installed so as to project toward the traveling direction X side of the crane 1.
　ケーブルリール３５を備えたケーブルリール装置２は、クレーン１に対して着脱可能とされている。図１に示されているように、１つのクレーン１に対して複数設けることもできる。そして、給電ボックス３１の位置に応じて、ケーブルリール装置２の位置が変更できるようになっている。 The cable reel device 2 including the cable reel 35 is detachable from the crane 1. As shown in FIG. 1, a plurality of cranes 1 can be provided. The position of the cable reel device 2 can be changed according to the position of the power supply box 31.
　図１に示された例では、前側のクレーン１Ｆでは、後方の左右の脚部１１に１つずつケーブルリール装置２が設けられており、後側のクレーン１Ｒでは、左方の前後の脚部１１に１つずつケーブルリール装置２が設けられている。後側のクレーン１Ｒでは、前側の左方に給電ボックス３１が位置しているので、この給電ボックス３１に近い位置すなわち前側左方の脚部１１にケーブルリール装置２が移設されている。例えば、前側のクレーン１Ｆのように後側右方の脚部１１にケーブルリール装置２が設置されていた場合には、矢印Ａに示すように、ケーブルリール装置２を後側右方から前側左方へとケーブルリール装置２を移設する。
　クレーン１の柱１０の下方の脚部１１には、ケーブルリール装置２を固定するための突出梁（突出部）１３が水平方向に張り出して設けられている。突出梁１３を用いたケーブルリール装置２の固定方法については後述する。 In the example shown in FIG. 1, the front crane 1 </ b> F is provided with one cable reel device 2 at each of the left and right legs 11 at the rear, and the rear crane 1 </ b> R has left and right legs at the front and rear. The cable reel device 2 is provided one by one. In the rear crane 1R, the power supply box 31 is located on the left side on the front side. Therefore, the cable reel device 2 is moved to a position close to the power supply box 31, that is, the leg 11 on the left side on the front side. For example, when the cable reel device 2 is installed on the rear right leg 11 like the front crane 1F, as shown by the arrow A, the cable reel device 2 is moved from the rear right side to the front left side. The cable reel device 2 is moved in the direction.
A protruding beam (protruding portion) 13 for fixing the cable reel device 2 is provided on the leg portion 11 below the pillar 10 of the crane 1 so as to protrude in the horizontal direction. A method of fixing the cable reel device 2 using the protruding beam 13 will be described later.
　図２及び図３には、ケーブルリール装置２が示されている。
　ケーブルリール装置２は、給電ケーブル３３を巻回するケーブルリール３５と、ケーブルリール３５の回転中心を支持する回転軸体３７と、回転軸体３７を回転駆動する電動モータ３９と、給電ケーブル３３から供給された電力をクレーン１側に供給するためのコネクタ４１とを備えている。 2 and 3 show the cable reel device 2.
The cable reel device 2 includes a cable reel 35 that winds the power supply cable 33, a rotary shaft body 37 that supports the rotation center of the cable reel 35, an electric motor 39 that rotationally drives the rotary shaft body 37, and the power supply cable 33. And a connector 41 for supplying the supplied power to the crane 1 side.
　電動モータ３９は、減速機４３を介して回転軸体３７を駆動するようになっている。電動モータ３９は、給電ケーブル３３を繰り出すときは給電ケーブル３３が弛まないように所定の張力が給電ケーブル３３にかかるように動作し、給電ケーブル３３を巻き取るときはケーブルリール３５を巻取方向に所定のトルクで回転駆動させる。 The electric motor 39 drives the rotary shaft 37 through the speed reducer 43. The electric motor 39 operates so that a predetermined tension is applied to the power supply cable 33 so that the power supply cable 33 is not loosened when the power supply cable 33 is unwound, and when the power supply cable 33 is wound, the cable reel 35 is moved in the winding direction. Rotation is driven with a predetermined torque.
　給電ケーブル３３から供給された電力は、スリップリング装置４５を介してコネクタ４１へと供給されるようになっている。スリップリング装置４５は、図４に示すように、給電ケーブル３３から３相に分岐されたそれぞれの配線に対してスリップリング４５ａが設けられており、これらスリップリング４５ａと対応した各ブラシ４５ｂを介してコネクタ４１へと３相電力が導かれるようになっている。コネクタ４１は、クレーン側の図示しないコネクタと接続される。 The electric power supplied from the power supply cable 33 is supplied to the connector 41 via the slip ring device 45. As shown in FIG. 4, the slip ring device 45 is provided with a slip ring 45a for each of the wires branched into three phases from the power supply cable 33, and the brushes 45b corresponding to these slip rings 45a are provided. Thus, the three-phase power is led to the connector 41. The connector 41 is connected to a connector (not shown) on the crane side.
　ケーブルリール３５の下方には、地上から導かれる給電ケーブル３３をケーブルガイド４７が設けられている。 Below the cable reel 35, a cable guide 47 is provided for the power supply cable 33 guided from the ground.
　上述したケーブルリール３５、電動モータ３９、スリップリング装置４５、コネクタ４１等は、下方に位置する接続用架台（接続部）５１に搭載されている。接続用架台５１は、四隅に設けられて立設された脚部５３と、脚部５３に対して水平に固定された下方台板５５及び上方台板５７とを備えている。上方台板５７上には、減速機４３及びスリップリング装置４５が固定設置されている。 The cable reel 35, the electric motor 39, the slip ring device 45, the connector 41, and the like described above are mounted on a connection stand (connection portion) 51 positioned below. The connection stand 51 includes leg portions 53 provided upright at four corners, and a lower base plate 55 and an upper base plate 57 fixed horizontally to the leg portions 53. On the upper base plate 57, a reduction gear 43 and a slip ring device 45 are fixedly installed.
　上方台板５７と下方台板５５との間には、開口５９が形成されている。この開口５９は、クレーン１に対してケーブルリール装置２を固定するための接続用開口とされている。具体的には、図３に示されているように、クレーン１の柱１０の下方の脚部１１から走行方向Ｘの外方に張り出した突出梁１３が、開口５９に対して挿入可能となっている。 An opening 59 is formed between the upper base plate 57 and the lower base plate 55. The opening 59 is a connection opening for fixing the cable reel device 2 to the crane 1. Specifically, as shown in FIG. 3, the protruding beam 13 that protrudes outward in the traveling direction X from the lower leg portion 11 of the column 10 of the crane 1 can be inserted into the opening 59. ing.
　下方台板５５には、突出梁１３に対してケーブルリール装置２を固定するためのロック機構が設けられている。このロック機構は、複数の係合片６１を備えており、常態において上方へと進出するようにバネ等の付勢部材によって付勢されている。図３には、係合片６１が上方に進出して突出梁１３の下面に形成された係合溝に係合されたロック状態が示されている。
　下方台板５５の側面には、図２に示されているように、フォークリフトの爪が挿入可能とされたフォークリフト用挿入穴６３が形成されている。このフォークリフト用挿入穴６３からフォークリフトの爪６５が挿入されると、図５に示されているように、係合片６１はフォークリフトの爪６５に当接した状態で下方へと退避してロック解除状態となるようになっている。 The lower base plate 55 is provided with a lock mechanism for fixing the cable reel device 2 to the protruding beam 13. The lock mechanism includes a plurality of engagement pieces 61 and is normally biased by a biasing member such as a spring so as to advance upward. FIG. 3 shows a locked state in which the engagement piece 61 is advanced upward and engaged with an engagement groove formed on the lower surface of the protruding beam 13.
As shown in FIG. 2, a forklift insertion hole 63 into which a forklift claw can be inserted is formed on the side surface of the lower base plate 55. When the forklift claw 65 is inserted from the forklift insertion hole 63, the engagement piece 61 is retracted downward in the state of being in contact with the forklift claw 65 and unlocked as shown in FIG. It comes to be in a state.
　図６Ａおよび図６Ｂには、クレーン１に対するケーブルリール装置２の固定方法が示されている。ケーブルリール装置２は、フォークリフトによって搬送可能とされており、図６Ａに示されているように、フォークリフトの爪６５を下方台板５５のフォークリフト用挿入穴６３（図２参照）から挿入することによってケーブルリール装置２を持ち上げる。このとき、係合片６１はフォークリフトの爪６５によって下方へと退避されており、ロック状態が解除されている。そして、フォークリフトをクレーン１側へと接近させて、突出梁１３をケーブルリール装置２の開口５９内に挿入する。その後、図６Ｂに示すように、フォークリフトをクレーン１から遠ざかるように退避させて爪６５をフォークリフト用挿入穴６３から抜く。爪６５が退避すると、係合片６１は付勢力によって上方へと進出して突出梁１３に対して係合させられ、ロック状態となる。 6A and 6B show a method of fixing the cable reel device 2 to the crane 1. The cable reel device 2 can be conveyed by a forklift, and as shown in FIG. 6A, the forklift pawl 65 is inserted into the forklift insertion hole 63 (see FIG. 2) of the lower base plate 55. The cable reel device 2 is lifted. At this time, the engaging piece 61 is retracted downward by the forklift pawl 65, and the locked state is released. Then, the forklift is moved closer to the crane 1 side, and the protruding beam 13 is inserted into the opening 59 of the cable reel device 2. Thereafter, as shown in FIG. 6B, the forklift is retracted away from the crane 1, and the pawl 65 is removed from the forklift insertion hole 63. When the claw 65 is retracted, the engaging piece 61 is advanced upward by the urging force and is engaged with the protruding beam 13 to be locked.
　以上の通り、本実施形態によれば以下の作用効果を奏する。
　地上側の給電ボックス３１から導かれる給電ケーブル３３が巻回されるケーブルリール３５と、給電ケーブル３３からの電力をクレーン１側に供給する際に用いるコネクタ４１とを備えたクレーン用給電ケーブルリール装置２を、これらを搭載した接続用架台５１によって、クレーン１に対して着脱可能とすることとした。これにより、地上側の給電ボックス３１の位置が、クレーン１に取り付けられた給電ケーブルリール装置２から見て遠い位置とされている場合であっても、給電ケーブルリール装置２を取り外して給電ボックス３１に近い所望の位置に移設することができるので、給電ボックス３１の位置に関わらずクレーンに電力を供給することができる。
　クレーン１の脚部１１から張り出した突出梁１３を、開口５９に挿入することによってケーブルリール装置２を固定することができるので、クレーン１に対して簡便に移設することができる。
　接続用架台５１の下方台板５５にフォークリフト用挿入穴６３を形成することによって、フォークリフト用挿入穴６３にフォークリフトの爪６５を差し込んでケーブルリール装置２を搬送することができるようにした。そして、フォークリフトの爪６５の挿入及び退出に応じて退避及び進出する係合片６１によってクレーン１の突出梁１３に対して固定および解除するロック機構を設けることとした。これにより、フォークリフトによってケーブルリール装置２をクレーン１に取り付けたり取り外したりする一連の作業の中で同時にケーブルリール装置２を固定および解除することができるので、作業性が向上する。 As described above, according to the present embodiment, the following operational effects are obtained.
Crane power supply cable reel device comprising a cable reel 35 around which a power supply cable 33 led from a power supply box 31 on the ground side is wound, and a connector 41 used when power from the power supply cable 33 is supplied to the crane 1 side. 2 can be attached to and detached from the crane 1 by the connection stand 51 on which these are mounted. As a result, even when the position of the power supply box 31 on the ground side is far from the power supply cable reel device 2 attached to the crane 1, the power supply box 31 is removed by removing the power supply cable reel device 2. Therefore, it is possible to supply power to the crane regardless of the position of the power supply box 31.
Since the cable reel device 2 can be fixed by inserting the protruding beam 13 protruding from the leg portion 11 of the crane 1 into the opening 59, it can be easily moved to the crane 1.
By forming the forklift insertion hole 63 in the lower base plate 55 of the connection base 51, the forklift claw 65 is inserted into the forklift insertion hole 63 so that the cable reel device 2 can be transported. And the locking mechanism which fixes and cancels | releases with respect to the protrusion beam 13 of the crane 1 by the engagement piece 61 which retracts | saves and advances according to insertion and withdrawal of the pawl 65 of the forklift is provided. As a result, the cable reel device 2 can be fixed and released at the same time in a series of operations in which the cable reel device 2 is attached to or removed from the crane 1 by a forklift, thereby improving workability.
　また、クレーン１にて消費する電力を平準化するようにバッテリの充放電を制御する充放電装置を備えることにより、給電ケーブル３３から供給される電力をＡＣ４６０Ｖとして、クレーン１にて消費する電力を抑えるようにした。これにより、給電ケーブル３３として、従来のようにＡＣ６６００Ｖ級といった高電圧仕様の比較的太い給電ケーブルを用いる必要が無くなり、ケーブルリール３５の径を小さくして小型化することができる。したがって、横行方向に隣り合うクレーン１Ｆ，１Ｒ（図１参照）の間隔が狭いコンテナヤードであっても、クレーン１の走行方向Ｘに張り出すようにケーブルリール３５を設けることができ、従来のように横行方向Ｙの外側にケーブルリールを張り出す必要がなくなる。 In addition, by providing a charging / discharging device that controls the charging / discharging of the battery so that the power consumed by the crane 1 is leveled, the power supplied from the power supply cable 33 is set to AC460V, and the power consumed by the crane 1 is I tried to suppress it. As a result, it is not necessary to use a relatively thick power supply cable having a high voltage specification such as the AC6600V class as in the past as the power supply cable 33, and the diameter of the cable reel 35 can be reduced and the size can be reduced. Therefore, even in a container yard where the distance between the cranes 1F and 1R (see FIG. 1) adjacent in the transverse direction is narrow, the cable reel 35 can be provided so as to project in the traveling direction X of the crane 1, as in the conventional case. Therefore, it is not necessary to project the cable reel outside the transverse direction Y.
１　クレーン
２　ケーブルリール装置（クレーン用給電ケーブルリール装置）
１３　突出梁（突出部）
３１　給電ボックス（給電源）
３３　給電ケーブル
３５　ケーブルリール
４１　コネクタ
５９　開口（接続用開口）
６１　係合片（ロック機構）
６３　フォークリフト用挿入穴 1 Crane 2 Cable reel device (Power supply cable reel device for crane)
13 Protruding beam (protruding part)
31 Power supply box (power supply)
33 Feeding cable 35 Cable reel 41 Connector 59 Opening (connection opening)
61 Engagement piece (locking mechanism)
63 Forklift insertion hole

Claims (5)

  1. 　地上側の給電源から導かれる給電ケーブルが巻回されるケーブルリールと、
    　該ケーブルリールに巻回された給電ケーブルからの電力をクレーン側に供給する際に用いるコネクタと、
    　前記ケーブルリール及び前記コネクタが搭載され、クレーンに対して着脱可能とされた接続部と、
    を備えていることを特徴とするクレーン用給電ケーブルリール装置。     A cable reel around which a power supply cable led from a ground-side power supply is wound;
    A connector used to supply power from a power supply cable wound around the cable reel to the crane;
    A connecting portion on which the cable reel and the connector are mounted and detachable from the crane;
    A power supply cable reel device for cranes, comprising:
  2. 　前記接続部には、クレーンの脚部から外方に張り出した突出部が挿入可能とされた接続用開口が形成されていることを特徴とする請求項１に記載のクレーン用給電ケーブルリール装置。 2. A power feeding cable reel device for a crane according to claim 1, wherein the connection portion is formed with a connection opening into which a protruding portion protruding outward from a leg portion of the crane can be inserted.
  3. 　前記接続部には、フォークリフトの爪が挿入可能とされたフォークリフト用挿入穴が形成され、
    　前記接続部は、前記フォークリフト用挿入穴から挿入されたフォークリフトの爪によって退避し、フォークリフトの爪が退出した際に進出してクレーンの前記突出部に係合するロック機構を備えていることを特徴とする請求項２に記載のクレーン用給電ケーブルリール装置。     The connecting portion is formed with a forklift insertion hole into which a forklift claw can be inserted,
    The connecting portion is provided with a lock mechanism that is retracted by a forklift claw inserted from the forklift insertion hole, and is advanced when the forklift claw is retracted to engage with the protruding portion of the crane. The crane power feeding cable reel device according to claim 2.
  4. 　請求項１から３のいずれかに記載されたクレーン用給電ケーブルリール装置を備えていることを特徴とするクレーン。 A crane comprising the crane power supply cable reel device according to any one of claims 1 to 3.
  5. 　ＡＣ６００Ｖ以下の低圧電力が前記給電ケーブルを介して供給されて電力を貯蔵する電力貯蔵装置と、
    　当該クレーンにて消費する電力の変動に応じて前記電力貯蔵装置の充放電を制御する充放電制御装置と、
    を備え、
    　前記ケーブルリールは、前記クレーンの走行方向に張り出すように設けられていることを特徴とする請求項４に記載のクレーン。     A power storage device that stores low-voltage power of AC 600 V or less via the power supply cable and stores the power;
    A charge / discharge control device for controlling charge / discharge of the power storage device in accordance with fluctuations in power consumed by the crane;
    With
    The crane according to claim 4, wherein the cable reel is provided so as to protrude in a traveling direction of the crane.
PCT/JP2011/060092 2011-01-19 2011-04-25 Crane power-feed cable reel device and crane provided therewith WO2012098700A1 (en)

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