JPS58100731A - Measuring device for towing resistance - Google Patents
Measuring device for towing resistanceInfo
- Publication number
- JPS58100731A JPS58100731A JP19906281A JP19906281A JPS58100731A JP S58100731 A JPS58100731 A JP S58100731A JP 19906281 A JP19906281 A JP 19906281A JP 19906281 A JP19906281 A JP 19906281A JP S58100731 A JPS58100731 A JP S58100731A
- Authority
- JP
- Japan
- Prior art keywords
- carriage
- towing
- resistance
- surging
- specimen
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M10/00—Hydrodynamic testing; Arrangements in or on ship-testing tanks or water tunnels
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、波浪中または平水中における船舶海洋構造物
等の供試模型体（以下供試体という）の抵抗を水槽等に
おいて計測する曳航抵抗計測装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a towing resistance measuring device for measuring the resistance of a test model (hereinafter referred to as a test object) such as a ship and marine structure in waves or calm water in a water tank or the like.
従来、供試体の抵抗計測、特に波浪中での抵抗計測は第
１図に示すような装置により行なわれていた。すなわち
９図において、２０は水槽水面の上方で水槽側部に敷設
されたレール上を所定方向に走行する曳引車、１は曳引
車２０に対して左右方向に移動可能なスウーイングキャ
リジ。Conventionally, resistance measurement of a specimen, particularly resistance measurement in waves, has been carried out using an apparatus as shown in FIG. That is, in FIG. 9, 20 is a towing vehicle that travels in a predetermined direction on a rail laid on the side of the aquarium above the water surface of the aquarium, and 1 is a swooping carriage that is movable in the left-right direction with respect to the towing vehicle 20.
２はスウェイングキャリジ１に対して前後方向に移動可
能なサージングキャリジ、３はヒービングボールでその
上部はサージングキャリジ２の中央部を貫通しほぼ鉛直
方向に上下移動（滑動）可能に案内されている。そして
供試体４の曳航点５はヒービングボール６の下端に枢着
される。Reference numeral 2 denotes a surging carriage that can move forward and backward with respect to the swinging carriage 1. Reference numeral 3 denotes a heaving ball, the upper part of which passes through the center of the surging carriage 2 and is guided so that it can move up and down (slide) in an almost vertical direction. . The towing point 5 of the specimen 4 is pivoted to the lower end of the heaving ball 6.
１２は供試体にとう載された操舵機である。Reference numeral 12 is a steering gear mounted on the specimen.
１対のばね６はそれぞれ一端を曳引車２０に他端をスウ
ェイングキャリジ１に固定される。Each of the pair of springs 6 is fixed to the tow wheel 20 at one end and to the swing carriage 1 at the other end.
曳引用プーリ７及び重り用ブー９８はそれぞれスウーイ
ングキャリジ１に固定された軸受に支持される。９は曳
引フードで、曳引用ブー９７及び重り用プーリ８ｖｃ図
示のように巻き掛けられ、一端はサージングキャリジ２
の前端に固定され、他端には重り１０がつり下げられる
。１１はばねで、一端はスウェイングキャリジ１に固定
され他端は重り用プーリ８に接続されている。The towing pulley 7 and the weight boo 98 are supported by bearings fixed to the swooping carriage 1, respectively. 9 is a towing hood, which is wrapped around a towing boo 97 and a weight pulley 8vc as shown in the figure, and one end is attached to the surging carriage 2.
is fixed to the front end, and a weight 10 is suspended from the other end. Reference numeral 11 denotes a spring, one end of which is fixed to the swinging carriage 1 and the other end connected to the weight pulley 8.
上記構成において２重り１０を供試体４の抵抗Ｒとほぼ
バランスさせつつ曳引車２０を所定方向走行させ重り１
００重量重量側ることによって抵抗Ｒを計測する。斜波
中では供試体４が左右方向運動とドリフトをしようとす
る。これに対して、柔軟なばね６がスウーイングキャリ
ジ１に復原力を与え、他方リモートコントロールにより
操舵機１２の当て舵を行い所定曳航方位を保持するよう
にする。In the above configuration, the towing vehicle 20 is moved in a predetermined direction while the two weights 10 are approximately balanced with the resistance R of the specimen 4, and the weight 1 is
Measure the resistance R by weighing 00 weight. In the oblique waves, the specimen 4 tends to move in the left-right direction and drift. On the other hand, the flexible spring 6 provides a restoring force to the swooping carriage 1, and on the other hand, the steering gear 12 is steered by remote control to maintain a predetermined towing direction.
曳引力は主として重り１００重量重量側り計測されるが
９重り用ブー９８は柔軟なばね１１に接続されているの
で、供試体４．したがってサージングキャリジ２０前後
方向の運動を許容して。The pulling force is mainly measured by the weight of the 100 weights, but since the 9-weight boo 98 is connected to the flexible spring 11, the 4. Therefore, the movement of the surging carriage 20 in the front and back direction is allowed.
ばね１１は重り１０で釣合わなかった抵抗分をその変位
に変換して計測することとなる。The spring 11 converts the resistance unbalanced by the weight 10 into a displacement for measurement.
しかし、この装置では供試体の抵抗Ｒのほぼ全量を主と
して重り１００重量ＷＫよって計測するため、計測時に
はその調整に熟練と時間を必要とする。However, in this device, almost the entire resistance R of the specimen is measured mainly using a 100-weight WK weight, and therefore, adjustment at the time of measurement requires skill and time.
また波浪中で抵抗を計測する場合、模型船の前後方向、
および左右方向の動揺にともなって重り１０が揺れるた
め９重りの慣性力の影響が抵抗計測値に混入してくると
いう欠点がある。さらにこのような構成の装置において
は、サージングキャリジ２の移動に伴う摩擦力が直接に
計測値に混入しその影響を完全に取り除くことが困難で
あるため、その計測精度には限界があるという欠点もあ
った。In addition, when measuring resistance in waves, in the longitudinal direction of the model ship,
Furthermore, since the weights 10 sway due to the lateral movement, there is a drawback that the influence of the inertial force of the 9 weights is mixed into the resistance measurement value. Furthermore, in a device with such a configuration, the frictional force caused by the movement of the surging carriage 2 is directly mixed into the measured value, and it is difficult to completely remove its influence, so there is a limit to the measurement accuracy. There was also.
本発明は上記した従来の装置の欠点を除去して、特に波
浪中においても供試体の抵抗を精度よく容易に計測可能
とするため供試体を曳航する部分と計測する部分とを分
離し、曳航装置の摩擦力が計測値に混入しない位置で抵
抗計測を行うとともに、従来の重りによらず、トルクモ
ータによって供試体の抵抗をバランスさせて供試体の曳
航抵抗を計測する装置を提供しようとするものである。The present invention eliminates the drawbacks of the conventional apparatus described above, and in order to easily and accurately measure the resistance of a specimen even in waves, the part for towing the specimen and the part for measurement are separated. An attempt is made to provide a device that measures the resistance at a position where the frictional force of the device does not mix into the measured value, and also measures the towing resistance of a specimen by balancing the resistance of the specimen using a torque motor instead of using conventional weights. It is something.
このため９本発明の曳航抵抗計測装置は、水槽水面上方
で所定方向に直線移動する曳引車。Therefore, the towing resistance measuring device of the present invention uses a towing vehicle that moves linearly in a predetermined direction above the water surface of the aquarium.
曳引車に載設さ、れた軌条に沿って曳引車移動方向と直
角方向に移動可能なスウーイングキャリジ、スウーイン
グキャリジに敷設された軌条に沿って曳引車移動方向に
移動可能なサージングキャリジ、サージングキャリジを
鉛直方向に貫通し上下方向に移動可能に支持されその下
端が曳引車下方の水面に浮ぶ供試体と枢着されたヒービ
ングボールとからなる曳航抵抗計測装置において、前記
スウェイングキャリジに固設されたトルクモータと、そ
の一端がトルクモータの駆動軸に巻着され他端が前記サ
ージングキャリジに固着された曳引コードと、前記ヒー
ビングボールの下方でかつ前記供試体との枢着点より上
方に設けられたロードセルとを備えたことを特徴として
いる。A swooping carriage that is mounted on a towing vehicle and is movable in a direction perpendicular to the direction of movement of the towing vehicle along rails laid on the swooping carriage; In the towing resistance measuring device comprising a surging carriage, a specimen which vertically penetrates the surging carriage and is supported so as to be movable in the vertical direction and whose lower end floats on the water surface below the towing vehicle, and a heaving ball pivotally connected, the sway A torque motor fixed to the surging carriage, a traction cord having one end wound around the drive shaft of the torque motor and the other end fixed to the surging carriage, and a traction cord connected below the heaving ball and to the specimen. It is characterized by comprising a load cell provided above the pivot point.
以下１図面により本発明の詳細な説明すると。The present invention will be explained in detail below with reference to one drawing.
第２図は本発明の曳航抵抗計測装置の一実施例としての
斜視図である。FIG. 2 is a perspective view of an embodiment of the towing resistance measuring device of the present invention.
この図において、第１図と同一番号のものは前記従来装
置において説明したものと同一のもので同一の作用、効
果を有する。In this figure, the same numbers as those in FIG. 1 are the same as those explained in the conventional device, and have the same functions and effects.
捉りてことでは第１図と興る構成についてのみ説明する
。In summary, only the configuration that appears in FIG. 1 will be explained.
トルクモータ１３は、スウユイングキャリジ１に塔載さ
れている。トルクモータ１３の駆動軸には曳引フード１
４の一端側が巻かれており、その他端はサージングキャ
リジ２に固着されている。The torque motor 13 is mounted on the swing carriage 1. A towing hood 1 is attached to the drive shaft of the torque motor 13.
4 is wound around one end, and the other end is fixed to the surging carriage 2.
１５はばねでその一端はサージングキャリジ２に。15 is a spring and one end of it is connected to the surging carriage 2.
他端はスウェイングキャリジ１に固着されている。ヒー
ビングボール３はその下端に固定されたロードセル１６
を介して模型船４に枢着されている。The other end is fixed to the swing carriage 1. The heaving ball 3 has a load cell 16 fixed to its lower end.
It is pivotally connected to the model ship 4 via.
トルクモータ１３の駆動軸にかかるトルクは供給される
電流にほぼ比例することは一般に知られている。トルク
モータ１３の回転軸とサージングキャリジ２は曳航コー
ド１４によって連結されているため、供試体４の抵抗Ｒ
に相当する力Ｗが得られるようにトルクモータ１３の供
給電流を調整することによって模型船４の抵抗とバラン
スさせることができる。トルクモータ１３の供給電流の
過不足によって生じるバランス力Ｗと供試体４の抵抗Ｒ
のアンバランス量はサージングキャリジ２とスウェイン
グキャリジ１を結合しているばね１５によって吸収でき
るので、トルクモータ１３への供給電流の調整は大略で
よい。It is generally known that the torque applied to the drive shaft of the torque motor 13 is approximately proportional to the supplied current. Since the rotating shaft of the torque motor 13 and the surging carriage 2 are connected by the towing cord 14, the resistance R of the specimen 4 is
The resistance of the model ship 4 can be balanced by adjusting the current supplied to the torque motor 13 so as to obtain a force W corresponding to . Balancing force W caused by excess or deficiency of current supplied to the torque motor 13 and resistance R of the specimen 4
Since the amount of unbalance can be absorbed by the spring 15 that connects the surging carriage 2 and the swinging carriage 1, adjustment of the current supplied to the torque motor 13 is only necessary.
また抵抗Ｒの計測は次に述べるようにロードセル１６に
よって行うため、トルクモータ１３は単に模型船４の抵
抗Ｒに大略相当するバランス力Ｗを発生すればよい。Furthermore, since the resistance R is measured by the load cell 16 as described below, the torque motor 13 only needs to generate a balance force W that roughly corresponds to the resistance R of the model ship 4.
供試体４の抵抗Ｒの計測はヒービングボール３の下端部
に固着されたロードセル１６によって行なわれる。すな
わちロードセル１６はヒービングボール３と供試体４の
曳航点５の中間位置に配置される。そのためロードセル
１６にはサージングキャリジ２とスウェイングキャリジ
１との間の摩擦あるいはトルクモータ１３のブラシと整
流子間の摩擦の影響が混入しない。The resistance R of the specimen 4 is measured by a load cell 16 fixed to the lower end of the heaving ball 3. That is, the load cell 16 is arranged at an intermediate position between the heaving ball 3 and the towing point 5 of the specimen 4. Therefore, the influence of the friction between the surging carriage 2 and the swinging carriage 1 or the friction between the brush of the torque motor 13 and the commutator does not enter the load cell 16.
従来の方法では第１図に示すように模型船４の抵抗とバ
ランスさせる重り１００重量あるいはばね１１の変位が
抵抗Ｒの計測量に関係するため。In the conventional method, as shown in FIG. 1, the weight of the 100 weight to balance the resistance of the model ship 4 or the displacement of the spring 11 is related to the measured amount of the resistance R.
サージングキャリジ２とスウェイングキャリジ１との間
の摩擦力などの装置の摩擦力が抵抗計測値に混入してい
たが９本発明の装置では抵抗を計測するためにロードセ
ル１６を用いて、これを供試体４の曳航抵抗バランシン
グ部と分離して装置の摩擦力が混入しない位置に配置し
たため精度の高い抵抗計測値が得られる利点がある。The frictional force of the device, such as the frictional force between the surging carriage 2 and the swaying carriage 1, was mixed into the resistance measurement value, but in the device of the present invention, a load cell 16 is used to measure resistance. Since it is separated from the towing resistance balancing section of the specimen 4 and placed in a position where the frictional force of the device is not mixed in, there is an advantage that highly accurate resistance measurement values can be obtained.
また、従来の重り１０によるバランス方式に代えてトル
クモータ１３を採用することにより、計測時に重り１０
の調整に熟練と時間を要していたのに対して、トルクモ
ータへの供給電流を変えることにより容易に曳航力を調
整でき、さ６に重り１０が供試体４の動揺とともに揺れ
るために。In addition, by adopting the torque motor 13 instead of the conventional balance method using the weight 10, the weight 10 can be used during measurement.
Whereas the adjustment required skill and time, the towing force can be easily adjusted by changing the current supplied to the torque motor, and the weight 10 swings with the shaking of the specimen 4.
重り１０の慣性力の影響が抵抗計測値に混入する不具合
も解消できる利点もある。さらに模型船の曳航抵抗バラ
ンシング部分と抵抗を計測する部分とを分離した結果、
バランス力を与える部分の設置場所や構造に自由度が増
すために装置の小型、軽量化も期待できる利点もあるも
のである。There is also the advantage that the problem of the influence of the inertial force of the weight 10 being mixed into the resistance measurement value can be eliminated. Furthermore, as a result of separating the towing resistance balancing part of the model ship from the part that measures the resistance,
Another advantage is that the device can be made smaller and lighter because there is more freedom in the installation location and structure of the part that provides the balancing force.
第１図は従来の曳航抵抗計測装置の斜視図である。第２
図は本発明の一実施例としての曳航抵抗計測装置を示す
斜視図である。
１・・・スウェイングキャリジ ２・・・サージングキ
ャリジ、３・・・ヒービングボール、４・・・供試体。
５・・・供試体の曳航点、 ６．１１・・・ばね、７・
・・曳引用プーリ、８・・・重り用プーリ、９・・・曳
引コード。
１０・・・重り、１２・・・操舵ｌｌ、１３・・・トル
クモータ、１４・・・曳引コード、１５・・・ばね、１
６・・・ロードセル、２０曳引車。FIG. 1 is a perspective view of a conventional towing resistance measuring device. Second
The figure is a perspective view showing a towing resistance measuring device as an embodiment of the present invention. 1... Swinging carriage 2... Surging carriage, 3... Heaving ball, 4... Specimen. 5... Towing point of the specimen, 6.11... Spring, 7.
... Towing pulley, 8... Weight pulley, 9... Towing cord. 10... Weight, 12... Steering II, 13... Torque motor, 14... Traction cord, 15... Spring, 1
6...Load cell, 20 tow trucks.
Claims (1)
に載設された軌条に沿って曳引車移動方向と直角方向に
移動可能なスウェイングキャリジ、スウェイングキャリ
ジに敷設された軌条に沿って曳引車移動方向に移動可能
なサージングキャリジ、サージングキャリジを鉛直方向
に貫通し上下方向に移動可能に支持されその下端が曳引
車下方の水面に浮ぶ供試体と枢着されたヒービングボー
ルとからなる曳航抵抗計測装置において、前記スウェイ
ングキャリジに固設されたトルクモータと、その一端が
トルクモータの駆動軸に巻着され他端が前記サージング
キャリジに固着された曳引コードと、前記ヒービングボ
ールの下方でかつ前記供試体との枢着点より上方に介層
されたロードセルとを備えたことを特徴とする曳航抵抗
計測装置A tow truck that moves linearly in a predetermined direction above the water surface of the aquarium, a swinging carriage that can move along a rail mounted on the tow truck in a direction perpendicular to the direction of movement of the tow truck, and a rail installed on the swinging carriage. A surging carriage that is movable in the direction of movement of the towing vehicle along the surging carriage, and a heaving that is pivotally connected to a specimen that penetrates the surging carriage in the vertical direction and is supported so as to be movable in the vertical direction, with its lower end floating on the water surface below the towing vehicle. A towing resistance measuring device comprising: a torque motor fixed to the swinging carriage; a towing cord having one end wound around a drive shaft of the torque motor and the other end fixed to the surging carriage; A towing resistance measuring device characterized by comprising a load cell interposed below the heaving ball and above a pivot point with the specimen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19906281A JPS58100731A (en) | 1981-12-10 | 1981-12-10 | Measuring device for towing resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19906281A JPS58100731A (en) | 1981-12-10 | 1981-12-10 | Measuring device for towing resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58100731A true JPS58100731A (en) | 1983-06-15 |
Family
ID=16401470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19906281A Pending JPS58100731A (en) | 1981-12-10 | 1981-12-10 | Measuring device for towing resistance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58100731A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61234329A (en) * | 1985-04-10 | 1986-10-18 | Nippon Zosen Shinko Zaidan | Method and apparatus for restraining motion |
| EP1687613A2 (en) * | 2003-06-09 | 2006-08-09 | ExxonMobil Upstream Research Company | Method and apparatus for fluid flow testing |
| CN101975655A (en) * | 2010-09-22 | 2011-02-16 | 上海交通大学 | Unsteady load simulation device |
| KR101243786B1 (en) | 2010-10-07 | 2013-03-14 | 한국해양과학기술원 | Fluid static load measuring apparatus for marine structure |
| WO2015080408A1 (en) * | 2013-11-28 | 2015-06-04 | 한국해양과학기술원 | Device for measuring added resistance in waves |
| CN105571818A (en) * | 2015-12-08 | 2016-05-11 | 中国人民解放军海军工程大学 | Variable-water-depth towing tank air-layer resistance reduction test device and method |
| RU180204U1 (en) * | 2017-03-28 | 2018-06-06 | Виталий Алексеевич Пелешенко | Installation for conducting hydrodynamic tests in the experimental pool |
| CN109724771A (en) * | 2018-12-17 | 2019-05-07 | 中国空气动力研究与发展中心低速空气动力研究所 | It is a kind of for measuring the mono-pendulum type balance of underwater sailing body resistance |
| CN109855838A (en) * | 2019-02-15 | 2019-06-07 | 武汉理工大学 | A kind of ship model wave simulation test device |
| CN110186648A (en) * | 2019-06-19 | 2019-08-30 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | Seaway load free sailing model ship tests protective device and its application method |
| JP2020085635A (en) * | 2018-11-22 | 2020-06-04 | 株式会社三井造船昭島研究所 | Tank test equipment, tank test system, and tank test method |
| CN114812906A (en) * | 2022-06-28 | 2022-07-29 | 水利部交通运输部国家能源局南京水利科学研究院 | Movable device and method for measuring stress of floating substances on surface of water body |
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| JPS51124970A (en) * | 1975-04-25 | 1976-10-30 | Kiyoshi Takahashi | Torque meter for a wheel with horizartal control device |
| JPS5647550U (en) * | 1979-09-20 | 1981-04-27 |
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1981
- 1981-12-10 JP JP19906281A patent/JPS58100731A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51124970A (en) * | 1975-04-25 | 1976-10-30 | Kiyoshi Takahashi | Torque meter for a wheel with horizartal control device |
| JPS5647550U (en) * | 1979-09-20 | 1981-04-27 |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
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