WO2022030533A1 - 係船索張力監視システム - Google Patents
係船索張力監視システム Download PDFInfo
- Publication number
- WO2022030533A1 WO2022030533A1 PCT/JP2021/028913 JP2021028913W WO2022030533A1 WO 2022030533 A1 WO2022030533 A1 WO 2022030533A1 JP 2021028913 W JP2021028913 W JP 2021028913W WO 2022030533 A1 WO2022030533 A1 WO 2022030533A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- mooring line
- tension
- band
- winch drum
- drum
- Prior art date
Links
- 238000012544 monitoring process Methods 0.000 title claims abstract description 22
- 238000004804 winding Methods 0.000 claims abstract description 51
- 238000012986 modification Methods 0.000 description 6
- 230000004048 modification Effects 0.000 description 6
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 238000012790 confirmation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/16—Tying-up; Shifting, towing, or pushing equipment; Anchoring using winches
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/28—Other constructional details
- B66D1/40—Control devices
- B66D1/48—Control devices automatic
- B66D1/50—Control devices automatic for maintaining predetermined rope, cable, or chain tension, e.g. in ropes or cables for towing craft, in chains for anchors; Warping or mooring winch-cable tension control
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D49/00—Brakes with a braking member co-operating with the periphery of a drum, wheel-rim, or the like
- F16D49/08—Brakes with a braking member co-operating with the periphery of a drum, wheel-rim, or the like shaped as an encircling band extending over approximately 360 degrees
- F16D49/10—Brakes with a braking member co-operating with the periphery of a drum, wheel-rim, or the like shaped as an encircling band extending over approximately 360 degrees mechanically actuated
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
- F16D2066/005—Force, torque, stress or strain
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2125/00—Components of actuators
- F16D2125/18—Mechanical mechanisms
- F16D2125/58—Mechanical mechanisms transmitting linear movement
- F16D2125/68—Lever-link mechanisms, e.g. toggles with change of force ratio
Definitions
- the present invention relates to a mooring line tension monitoring system.
- the ship is equipped with a winch for mooring lines that moor the ship to a quay or the like.
- a winch for mooring lines that moor the ship to a quay or the like.
- excessive tension may be applied to the mooring line due to changes in sea conditions and weather, and the mooring line may break. From this point of view, it is desirable to monitor the tension of the mooring line during mooring.
- Patent Document 1 discloses a mooring line tension monitoring system (referred to as "mooring line monitoring device” in Patent Document 1) that can monitor the tension of the mooring line at the time of mooring.
- a split drum including a storage drum and a tension drum is used as a winch drum, and a load cell is incorporated in a band brake including a brake drum.
- the mooring line is wound around the tension drum of the winch drum so that the radius from the center of the winch drum to the line of action of tension is constant, and the load measured by the load cell is converted into the mooring line tension.
- an object of the present invention is to provide a mooring line tension monitoring system capable of monitoring the tension of the mooring line at the time of mooring without using a split drum.
- the mooring line tension monitoring system of the present invention comprises a winch drum around which the mooring line is wound, a band brake including a brake drum that rotates with the winch drum, and winding of the mooring line on the winch drum.
- the number of winding layers detector for detecting the number of layers
- the load cell for measuring the band tension incorporated in the band brake
- the number of winding layers of the mooring line detected by the number of winding layers detector, and the load cell are measured. It is characterized by comprising a control device for calculating the tension acting on the mooring line based on the band tension.
- the number of winding layers detector detects the number of winding layers of the mooring line on the winch drum, so instead of keeping the radius from the center of the winch drum to the line of action of tension constant, the winding The number of layers can be used to calculate the tension of the mooring line. Therefore, the tension of the mooring line at the time of mooring can be monitored without using the split drum.
- a mooring line tension monitoring system capable of monitoring the tension of the mooring line at the time of mooring without using a split drum.
- FIG. 1 It is a front view of the mechanical part of the mooring line tension monitoring system which concerns on one Embodiment of this invention. It is sectional drawing along the line II-II of FIG. It is a schematic block diagram of a band brake. It is a figure which shows the modification of the winding layer number detector. It is a figure which shows another modification of the winding layer number detector. It is a figure which shows the further modification of the winding layer number detector. It is a schematic block diagram of the band brake of a modification.
- FIG. 1 and 2 show a mooring line tension monitoring system 1 according to an embodiment of the present invention.
- This system 1 includes a winch drum 3 rotatably supported by a support base 30 provided on the deck 10 of a ship, and a band brake 4 that allows or prohibits (so-called braking) the rotation of the winch drum 3. include.
- a mooring line 11 (omitted in FIG. 1 for the sake of simplification of the drawing) is wound around the winch drum 3.
- Flange 31s project radially outward from both ends of the winch drum 3.
- the winch drum 3 is driven by the prime mover 22 via the speed reducer 23.
- the band brake 4 is arranged along the flange 31 on the speed reducer 23 side, and a clutch 24 is provided between the band brake 4 and the speed reducer 23.
- the clutch 24 is a manual type.
- the prime mover 22 may be an electric motor or a hydraulic motor.
- the prime mover 22 is provided with an operating device 21, and the prime mover 22 is manually operated.
- the prime mover 22 may be electrically controlled by the control device 8 described later.
- the band brake 4 is a manual type in this embodiment. Specifically, the band brake 4 includes a brake drum 41 fixed to the flange 31 as shown in FIG. That is, the brake drum 41 rotates together with the winch drum 3. Further, the band brake 4 includes a pair of arcuate bands 42, 43. One ends of the bands 42 and 43 are connected to each other via pins 44, and pins 45 and 46 are provided at the other ends of the bands 42 and 43, respectively.
- the pins 45 and 46 are connected to the link mechanism 47, and the link mechanism 47 moves the pins 45 and 46 closer to each other and away from each other according to the rotation of the operation shaft 48. Further, the link mechanism 47 is connected to the support column 12 provided on the deck 10 via a pin 49.
- the pin 45 located directly above the support column 12 is a pin-type load cell 5. In other words, the load cell 5 is incorporated in the band brake 4.
- the band tension F acts upward on the load cell 5. That is, the load cell 5 measures the band tension F.
- tension P acts on the mooring line 11
- a rotational force acts on the winch drum 3 and an upward force acts on the load cell 5, so that the band tension F measured by the load cell 5 is the mooring line. It largely depends on the tension P of 11.
- the band brake 4 is tightened and the clutch 24 is disengaged after the mooring line 11 hung on the bit of the quay is wound around the winch drum 3 by the prime mover 22.
- the mooring line tension monitoring system 1 includes a winding layer number detector 6 for detecting the number of winding layers of the mooring line 11 on the winch drum 3, the winding layer number detector 6, and the above-mentioned. It includes a control device 8 electrically connected to the load cell 5. The control device 8 is also electrically connected to the display 9.
- the display 9 is provided, for example, in the vicinity of a winch, a bridge, a cargo handling control room (cargo control room), or the like.
- control device 8 is a computer having a memory such as a ROM or a RAM, a storage such as an HDD or an SSD, and a CPU, and the program stored in the ROM or the storage is executed by the CPU.
- the winding layer number detector 6 includes a sensor that measures a numerical value related to the number of winding layers of the mooring line 11 and a calculation unit that converts the numerical value measured by the sensor into the number of winding layers of the mooring line.
- the arithmetic unit may be incorporated in the control device 8.
- the sensor that measures the numerical value related to the number of winding layers of the mooring line 11 is the encoder 61 that measures the rotation angle of the winch drum 3.
- the encoder 61 is provided on a sprocket arranged at a position away from the winch drum 3, and a chain is hung between the sprocket and the sprocket attached to the winch drum 3.
- the control device 8 has a tension P [kN] acting on the mooring line 11 based on the number of winding layers N of the mooring line 11 detected by the winding layer number detector 6 and the band tension F [kN] measured by the load cell 5. Is calculated. The control device 8 outputs the calculated tension P to the display 9.
- control device 8 calculates the tension P acting on the mooring line 11 using the following tension calculation formula (1) including the tension coefficient K and the calibration coefficient ⁇ .
- DB Brake drum diameter [mm]
- d R Mooring line diameter "mm”
- d D Winch drum diameter [mm]
- the tension coefficient K in the tension calculation formula (1) is calculated from the following formula (2).
- ⁇ Coefficient of friction between the band and the brake drum
- ⁇ Contact angle between the band and the brake drum
- the contact angle ⁇ between the band and the brake drum is the angle between the centers of the pins 45 and 46, as shown in FIG. Is.
- the mooring line tension monitoring system 1 includes the calibration device 7 as shown in FIG. In the initial state, the control device 8 sets the calibration coefficient ⁇ to 1.0.
- the calibration device 7 is for confirming the relationship between the band tension F of the band brake 4 and the virtual tension Pv of the mooring line 11 at the rated number of winding layers Nr of the mooring line 11 when the mooring line 11 is not moored.
- the rated number of turns Nr is arbitrarily determined from, for example, 1 to 3 layers.
- the calibration device 7 includes a triangular link plate 71 that is non-rotatably connected to the flange 31 and projects laterally from the flange 31, and a jack 72 (hydraulic cylinder) that moves the tip of the link plate 71 up and down. , Includes a hand pump 73 connected to the jack 72 by a hose 74. The pressure Pr of the hydraulic fluid pressurized by the hand pump 73 is measured by the pressure sensor 75.
- the configuration of the calibration device 7 is not limited to this, and can be changed as appropriate.
- the hydraulic fluid is supplied to the jack 72 through the hose 74, and the jack 72 extends.
- the band tension F of the band brake 4 measured by the load cell 5 increases.
- the control device 8 calculates the virtual tension Pv [kN] of the mooring line 11 using the following equation (3).
- Pr Pressure measured by the pressure sensor 75 [MPa]
- L Distance from the center of the winch drum 3 to the center of the jack 72 [mm]
- AS Pressure receiving area on the head side of the hydraulic cylinder which is the jack 72 [mm 2 ]
- the control device 8 determines the calibration coefficient ⁇ based on the result confirmed by using the calibration device 7. As a result of confirmation using the calibration device 7, the calibration coefficient ⁇ may remain 1.0, or may be smaller or larger than 1.0.
- control device 8 substitutes the band tension F measured by the load cell 5 into the above equation (1) when the virtual tension Pv of the mooring line 11 is calculated using the equation (3), and the equation (1) is substituted.
- the calibration coefficient ⁇ is determined so that the tension P calculated by (1) matches the virtual tension P v of the mooring line 11 calculated by using the equation (3).
- the winding layer number N of the mooring line 11 on the winch drum 3 is detected by the winding layer number detector 6, so that the winding layer number N is detected from the center of the winch drum 3.
- the tension P of the mooring line 11 can be calculated using the number of winding layers N thereof. Therefore, the tension P of the mooring line 11 at the time of mooring can be monitored without using the split drum. Further, since the calculated tension P is output from the control device 8 to the display 9, the seafarer who sees the display 9 can grasp the tension P of the mooring line 11.
- the control device 8 When the tension P of the mooring line 11 exceeds the specified value, the control device 8 generates an alarm sound in the alarm in the figure, and the sailor who hears the alarm sound releases the band brake 4. As a result, the mooring line 11 is unwound. After that, the sailor turns on the clutch, winds the loose mooring line 11 around the winch drum 3, tightens the band brake 4, and disengages the clutch 24.
- the sensor that measures the numerical value related to the number of winding layers of the mooring line 11 in the winding layer number detector 6 is not limited to the encoder 61 that measures the rotation angle of the winch drum 3.
- the number of winding layers of the mooring line 11 in the winding layer number detector 6 may be an encoder 62 (or an inclination sensor) that measures the angle of the pressing member 32.
- the pressing member 33 that presses the mooring line 11 against the winch drum 3 is configured to be reciprocating, the numerical value regarding the number of winding layers of the mooring line 11 in the winding layer number detector 6 is measured.
- the sensor may be a stroke sensor 63 that measures the position of the presser member 33.
- the winding layer number detector 6 may directly detect the number of winding layers of the mooring line 11 on the winch drum 3 by using a camera. Alternatively, as shown in FIG. 6, the winding layer number detector 6 may directly detect the number of winding layers of the mooring line 11 on the winch drum 3 by using the infrared unit 64 provided on the flange 31. ..
- the infrared unit 64 When the infrared unit 64 is used, the height of the mooring line 11 from the deck 10 at a predetermined position between the mooring hardware provided on the deck 10 (for example, the guide roller for the mooring line 11) and the winch drum 3 is infrared rays.
- the unit 64 may be used for measurement, and the height thereof may be converted into the number of winding layers.
- the calibration device 7 can be omitted, and the tension calculation formula (1) does not have to include the calibration coefficient ⁇ . However, if the calibration device 7 is provided as in the above embodiment and the calibration coefficient ⁇ in the tension calculation formula (1) is determined based on the result of confirmation using the calibration device 7, the tension P of the mooring line 11 is accurately determined. Can be calculated.
- the band brake 4 is a manual type in the above embodiment, the band brake 4 may be an electric type.
- the control device 8 may release the band brake 4 when the tension P of the mooring line 11 calculated by the control device 8 exceeds the specified value.
- the band brake 4 is electric, if the clutch 24 is also electric, the control device 8 turns on the clutch 24 after the band brake 4 is released, and the loose mooring line 11 is wound around the winch drum 3. May be good.
- Such a configuration is useful for labor saving of seafarers and automatic navigation.
- the pin-type load cell 5 incorporated in the band brake 4 may be a pin 49 between the support column 12 provided on the deck 10 and the link mechanism 47.
- the control device 8 calculates the tension P acting on the mooring line 11 using the following tension calculation formula (4).
- L Horizontal distance from the center of the winch drum 3 to the center of the pin 49 [mm]
- the mooring line tension monitoring system of the present invention has a winch drum around which the mooring line is wound, a band brake including a brake drum that rotates with the winch drum, and a number of winding layers for detecting the number of winding layers of the mooring line on the winch drum.
- the mooring line is based on the detector, the load cell incorporated in the band brake for measuring the band tension, the number of winding layers of the mooring line detected by the winding layer number detector, and the band tension measured by the load cell. It is characterized by comprising a control device for calculating the tension acting on the vehicle.
- the number of winding layers detector detects the number of winding layers of the mooring line on the winch drum, so instead of keeping the radius from the center of the winch drum to the line of action of tension constant, the winding The number of layers can be used to calculate the tension of the mooring line. Therefore, the tension of the mooring line at the time of mooring can be monitored without using the split drum.
- the control device may output the calculated tension to the display. According to this configuration, the seafarer who sees the display can grasp the tension of the mooring line.
- the mooring line monitoring system further includes a calibration device for confirming the relationship between the band tension of the band brake at the rated number of turns of the mooring line and the virtual tension of the mooring line when the mooring line is not moored, and the control device. May calculate the tension acting on the mooring line using a tension calculation formula including a calibration coefficient, and determine the calibration coefficient based on the result confirmed by using the calibration device. According to this configuration, the tension of the mooring line can be calculated accurately.
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
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- Combustion & Propulsion (AREA)
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Abstract
Description
dR:係船索径「mm」
dD:ウインチドラム径[mm]
θ:バンド-ブレーキドラム間の接触角
なお、バンド-ブレーキドラム間の接触角θは、図3中に示すように、ピン45,46の中心間の角度である。
L:ウインチドラム3の中心からジャッキ72の中心までの距離[mm]
AS:ジャッキ72である液圧シリンダのヘッド側受圧面積[mm2]
Dr:定格巻層数Nrの表層の係船索中心円直径
Dr=dD+Nr×dR
本発明は上述した実施形態に限定されるものではなく、本発明の要旨を逸脱しない範囲で種々の変形が可能である。
本発明の係船索張力監視システムは、係船索が巻き付けられるウインチドラムと、前記ウインチドラムと共に回転するブレーキドラムを含むバンドブレーキと、前記ウインチドラム上の係船索の巻層数を検出する巻層数検出器と、前記バンドブレーキに組み込まれた、バンド張力を計測するロードセルと、前記巻層数検出器で検出された係船索の巻層数および前記ロードセルで計測されたバンド張力に基づいて係船索に作用する張力を算出する制御装置と、を備える、ことを特徴とする。
11 係船索
3 ウインチドラム
4 バンドブレーキ
41 ブレーキドラム
5 ロードセル
6 巻層数検出器
7 校正装置
8 制御装置
9 表示器
Claims (3)
- 係船索が巻き付けられるウインチドラムと、
前記ウインチドラムと共に回転するブレーキドラムを含むバンドブレーキと、
前記ウインチドラム上の係船索の巻層数を検出する巻層数検出器と、
前記バンドブレーキに組み込まれた、バンド張力を計測するロードセルと、
前記巻層数検出器で検出された係船索の巻層数および前記ロードセルで計測されたバンド張力に基づいて係船索に作用する張力を算出する制御装置と、
を備える、係船索張力監視システム。 - 前記制御装置は、算出した張力を表示器へ出力する、請求項1に記載の係船索張力監視システム。
- 非係船時に、係船索の定格巻層数での前記バンドブレーキのバンド張力と係船索の仮想張力との関係を確認するための校正装置をさらに備え、
前記制御装置は、係船索に作用する張力を、校正係数を含む張力算出式を用いて算出し、前記校正装置を用いて確認された結果に基づいて前記校正係数を決定する、請求項1または2に記載の係船索張力監視システム。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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KR1020237006975A KR20230043203A (ko) | 2020-08-05 | 2021-08-04 | 계선삭 장력 감시 시스템 |
EP21853066.5A EP4194328A4 (en) | 2020-08-05 | 2021-08-04 | TENSION MONITORING SYSTEM FOR ANCHORING LINE |
CN202180057506.4A CN116133940A (zh) | 2020-08-05 | 2021-08-04 | 系缆索张力监视系统 |
JP2022541585A JP7538868B2 (ja) | 2020-08-05 | 2021-08-04 | 係船索張力監視システム |
Applications Claiming Priority (2)
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JP2020-132841 | 2020-08-05 | ||
JP2020132841 | 2020-08-05 |
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WO2022030533A1 true WO2022030533A1 (ja) | 2022-02-10 |
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ID=80117417
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PCT/JP2021/028913 WO2022030533A1 (ja) | 2020-08-05 | 2021-08-04 | 係船索張力監視システム |
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EP (1) | EP4194328A4 (ja) |
JP (1) | JP7538868B2 (ja) |
KR (1) | KR20230043203A (ja) |
CN (1) | CN116133940A (ja) |
WO (1) | WO2022030533A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2024029205A1 (ja) * | 2022-08-04 | 2024-02-08 | 川崎重工業株式会社 | 係船索張力監視システム |
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US4070981A (en) * | 1976-10-04 | 1978-01-31 | Guinn David C | Mooring system for floating drilling vessels |
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KR101984021B1 (ko) | 2012-05-01 | 2019-05-30 | 마사노리 사에키 | 발한 억제 장치 |
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2021
- 2021-08-04 KR KR1020237006975A patent/KR20230043203A/ko unknown
- 2021-08-04 WO PCT/JP2021/028913 patent/WO2022030533A1/ja unknown
- 2021-08-04 JP JP2022541585A patent/JP7538868B2/ja active Active
- 2021-08-04 EP EP21853066.5A patent/EP4194328A4/en active Pending
- 2021-08-04 CN CN202180057506.4A patent/CN116133940A/zh active Pending
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JPS62255365A (ja) * | 1986-04-30 | 1987-11-07 | Nippon Kokan Kk <Nkk> | 索張力測定装置 |
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Title |
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IGLESIAS-BANIELA SANTIAGO, PÉREZ-CANOSA JOSÉ MANUEL, CID-BACORELLE DAMIÁN: "Spring-loaded Winch Band Brakes as Tools to Improve Safety During Mooring Operations on Ships", TRANSNAV, THE INTERNATIONAL JOURNAL ON MARINE NAVIGATION AND SAFETY OF SEA TRANSPORTATION, vol. 14, no. 3, 1 September 2020 (2020-09-01), pages 711 - 719, XP055893873, ISSN: 2083-6473, DOI: 10.12716/1001.14.03.25 * |
NAKAMURA, MASAHIKO; KAJIWARA, HIROYUKI; HARA, SHOICHI; MANABE, MITSUO; SAIKI, HIDETOSHI: "Automatic Control of Winch for Mooring: Part 3, Control of Electric Winch", JOURNAL OF THE JAPAN SOCIETY OF NAVAL ARCHITECTS AND OCEAN ENGINEERS, vol. 1880-6538, no. 4, 30 November 2016 (2016-11-30), Japan, pages 367 - 370, XP009533835, DOI: 10.14856/conf.4.0_367 * |
See also references of EP4194328A4 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2024029205A1 (ja) * | 2022-08-04 | 2024-02-08 | 川崎重工業株式会社 | 係船索張力監視システム |
Also Published As
Publication number | Publication date |
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JP7538868B2 (ja) | 2024-08-22 |
JPWO2022030533A1 (ja) | 2022-02-10 |
KR20230043203A (ko) | 2023-03-30 |
EP4194328A1 (en) | 2023-06-14 |
EP4194328A4 (en) | 2024-09-04 |
CN116133940A (zh) | 2023-05-16 |
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