JP4411402B2 - Model ship inertial radius measuring device - Google Patents

Model ship inertial radius measuring device Download PDF

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JP4411402B2
JP4411402B2 JP2005099858A JP2005099858A JP4411402B2 JP 4411402 B2 JP4411402 B2 JP 4411402B2 JP 2005099858 A JP2005099858 A JP 2005099858A JP 2005099858 A JP2005099858 A JP 2005099858A JP 4411402 B2 JP4411402 B2 JP 4411402B2
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model ship
pedestal
model
inertial radius
ship
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JP2006275982A5 (en
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勝 辻本
博史 沢田
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National Maritime Research Institute
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Description

本発明は、模型船について慣動半径を測定するための装置に関する。   The present invention relates to an apparatus for measuring the radius of inertia of a model ship.

一般に、船舶の波浪中での挙動（振舞）を推定する際の要素として慣動半径が求められている。
従来の模型船による慣動半径測定手段としては、図４に示すようなブランコ方式による自己バランス型のものが知られており、まず支点０を中心として揺動しうる台１の上に、模型船２を搭載して、支点０とブランコ単体の重心Ｇ0との間の長さが求められる。また、支点０と模型船単体の重心ＧMとの間の長さが求められるとともに、ブランコと模型船との複合体の重心Ｇ′と支点０との間の長さが求められる。
さらに、模型船について慣性モーメントＩMを求めた後、模型船の慣動半径ｋyyを［数１］式により求めることができる。

Figure 0004411402
ただし、ＭM ：模型船の質量
ＬPP：模型船の垂線間長さ
ところで、上述のような従来の手段を実施する際には、図３に示すように、支持枠３の上部の水平支軸４からアーム５を介し垂下されたブランコの台１に模型船２が搭載されるため、模型船２を船長方向に揺動させて慣動半径を求めた後、模型船２の向きを台１上で横方向に変えて、船体横方向の慣動半径を求める際には、一旦、模型船２を支持枠３の外へ抜き出してから、同支持枠３の横向きの開口を通じ模型２を入れ直して台１上に搭載する必要があり、面倒な操作を伴うという不具合がある。
特開平１０−１３２６９９号公報 In general, an inertial radius is required as an element for estimating the behavior (behavior) of a ship in the waves.
As a conventional means for measuring the radius of inertia of a model ship, a swing-type self-balance type as shown in FIG. 4 is known. First, a model is placed on a platform 1 that can swing around a fulcrum 0. The ship 2 is mounted, and the length between the fulcrum 0 and the center of gravity G 0 of the swing unit is obtained. Further, the length between the center of gravity G M unitary fulcrum 0 and model ship is required, the length between the center of gravity G 'as a fulcrum 0 of the complex of the swing and the model ship are determined.
Further, after obtaining the moment of inertia I M for the model ship, the inertial radius k yy of the model ship can be obtained by the formula [1].
Figure 0004411402
 Where M M is the mass of the model ship
L PP : Length between vertical lines of model ship By the way, when the conventional means as described above is carried out, as shown in FIG. 3, it is suspended from the horizontal support shaft 4 at the upper part of the support frame 3 via the arm 5. Since the model ship 2 is mounted on the platform 1 of the swing, after the model ship 2 is swung in the direction of the ship to obtain the inertia radius, the direction of the model ship 2 is changed to the horizontal direction on the table 1, When obtaining the inertial radius in the lateral direction of the hull, it is necessary to remove the model ship 2 from the support frame 3 and then reinsert the model 2 through the lateral opening of the support frame 3 and mount it on the platform 1. There is a problem that it involves troublesome operations.
JP-A-10-132699

本発明は、模型船について慣動半径を測定する際の従来の複雑な操作に鑑みて、その簡略化を図れるようにした模型船用慣動半径測定装置を提供することを課題とする。   An object of the present invention is to provide a model ship inertial radius measuring apparatus which can be simplified in view of the conventional complicated operation when measuring the inertial radius of a model ship.

前述の課題を解決するため、本発明の模型船用慣動半径測定装置は、支軸により中間部を枢着されて左右に揺動可能に設けられた台座が、同台座の両端部にそれぞれ上記支軸よりも低位置に重心を有する重錘を備えることにより、自己バランス型の揺動式台座装置を構成しており、上記台座上に、模型船を搭載して同模型船の位置調整を行うための枕が、移動調節可能に設けられたことを特徴としている。   In order to solve the above-described problems, the inertial radius measuring apparatus for a model ship according to the present invention includes a pedestal provided with an intermediate portion pivotally supported by a support shaft and capable of swinging left and right. By providing a weight with a center of gravity at a position lower than the support shaft, a self-balancing rocking pedestal device is constructed. A model ship is mounted on the pedestal to adjust the position of the model ship. The pillow for performing is provided so that movement adjustment is possible.

また、本発明の模型船用慣動半径測定装置は、上記模型船を搭載して同模型船の水平面内での方向調整を行うための一対の補助枕が、互いに離隔した位置で上記枕上に沿い位置調整可能に設けられたことを特徴としている。   In addition, the inertial radius measuring apparatus for a model ship according to the present invention includes a pair of auxiliary pillows that are mounted on the model ship and perform direction adjustment in the horizontal plane of the model ship, along the pillows at positions separated from each other. It is characterized in that the position can be adjusted.

さらに、本発明の模型船用慣動半径測定装置は、上記台座上に、上記模型船を上記枕を介し搭載して同模型船の水平面内での方向調整を行うためのターンテーブルが設けられたことを特徴としている。   Further, the inertial radius measuring apparatus for a model ship of the present invention is provided with a turntable on the pedestal for mounting the model ship via the pillow and adjusting the direction of the model ship in a horizontal plane. It is characterized by that.

上述の本発明の模型船用慣動半径測定装置によれば、模型船を搭載する枕を備えた台座が、その周囲で従来のブランコ型支持枠のごとき障害物の影響を受けることが無いので、細長い模型船の向きを上記台座の上面で変える操作が著しく簡易化され、測定時間の大幅な短縮を図ることが可能になる。
しかも、慣動半径を算出する際には、その自己バランス型の模型船支持手段により、従来のブランコ方式の場合と同様の演算手段を採用することができる。 According to the model ship inertial radius measuring apparatus of the present invention described above, since the pedestal provided with the pillow for mounting the model ship is not affected by obstacles such as a conventional swing-type support frame around it, The operation of changing the orientation of the elongated model ship on the upper surface of the pedestal is remarkably simplified, and the measurement time can be greatly shortened.
In addition, when calculating the inertial radius, the same calculation means as in the case of the conventional swing system can be employed by the self-balancing model ship support means.

そして、上記枕が上記台座上で移動調節可能に設けられることにより、模型船の位置調整も容易に行われるようになる。   And the position adjustment of a model ship comes to be easily performed by the said pillow being provided so that movement adjustment is possible on the said base.

また、模型船を搭載して水平面内での方向調整を行うための一対の補助枕が互いに離隔した位置で上記枕に沿い位置調整可能に設けられると、上記模型船の船体中心線の方向を上記台座の揺動面内に沿わせる操作が容易となり、これにより慣動機半径を求めるための測定精度の向上を図ることができる。   In addition, when a pair of auxiliary pillows for mounting the model ship and adjusting the direction in the horizontal plane are provided so that the position can be adjusted along the pillows at positions separated from each other, the direction of the hull center line of the model ship is set. The operation along the oscillating surface of the pedestal is facilitated, whereby the measurement accuracy for obtaining the inertial machine radius can be improved.

さらに、上記模型船を上記枕を介し搭載して同模型船の水平面内での方向調整を行うためのターンテーブルが上記台座上に設けられていると、上記模型船の船長方向に係る慣動半径を求めるための計測作業の終了後に、上記ターンテーブルを９０度回転させれば、同模型船の横方向に係る慣動半径を求めるための計測作業へ容易に移行することができるので、同模型船の慣動半径測定作業が全体として極めて能率よく且つ正確に行われるようになる。   Furthermore, if a turntable for mounting the model ship via the pillow and adjusting the direction of the model ship in the horizontal plane is provided on the pedestal, the inertia according to the captain direction of the model ship If the turntable is rotated 90 degrees after the measurement work for obtaining the radius is completed, it is possible to easily shift to the measurement work for obtaining the inertial radius in the lateral direction of the model ship. As a whole, the model ship's inertial radius measurement operation can be performed extremely efficiently and accurately.

図１は本発明の実施例１としての模型船用慣動半径測定装置を示す斜視図である。
図１に示すように、基台10の支軸11により中間部を枢着されて左右に揺動可能に設けられた台座12が、その両端部に支軸11よりも低位置に重心を有する重錘13，13を備えるようにして、ヤジロベエのごとく自己バランスの機能を有する揺動式台座装置を構成している。 FIG. 1 is a perspective view showing an inertial radius measuring apparatus for a model ship as Embodiment 1 of the present invention.
As shown in FIG. 1, a pedestal 12 that is pivotally attached to an intermediate portion by a support shaft 11 of a base 10 and can swing left and right has a center of gravity at a position lower than the support shaft 11 at both ends thereof. The oscillating pedestal device having a self-balancing function like a jirobei is configured by providing the weights 13 and 13.

そして、台座12の上面には、模型船14を搭載して同模型船14の位置調整を行うための一対の枕15，15が、凸型または凹型のレール16に沿って移動可能の台車17上に設けられている。   A pair of pillows 15 and 15 for mounting the model ship 14 and adjusting the position of the model ship 14 are mounted on the upper surface of the pedestal 12. The carriage 17 is movable along the convex or concave rail 16. It is provided above.

また、模型船14を直接搭載して同模型船14の水平面内での方向調整を行うための一対の補助枕18，18が、互いに離隔した位置でそれぞれ枕15，15上に沿い位置調整可能に設けられている。   In addition, a pair of auxiliary pillows 18 and 18 for directly mounting the model ship 14 and adjusting the direction of the model ship 14 in the horizontal plane can be adjusted along the pillows 15 and 15 at positions separated from each other. Is provided.

上述の実施例１の模型船用慣動半径測定装置では、模型船14を搭載する枕15を備えた台座12が、その周囲で従来のブランコ型支持枠３やアーム５（図３参照）のごとき障害物の影響を受けることが無いので、細長い模型船14の向きを台座12の上面で変える操作が著しく簡易化され、測定時間の大幅な短縮を図ることが可能になる。
そして、慣動半径を算出する際には、その自己バランス型の模型船支持手段により、従来のブランコ方式の場合と同様の演算手段を採用することができる。 In the inertial radius measuring apparatus for a model ship of Example 1 described above, the pedestal 12 having the pillow 15 on which the model ship 14 is mounted is like a conventional swing-type support frame 3 or an arm 5 (see FIG. 3) around it. Since there is no influence of an obstacle, the operation of changing the direction of the elongated model ship 14 on the upper surface of the pedestal 12 is remarkably simplified, and the measurement time can be greatly shortened.
When calculating the inertial radius, the same calculation means as in the case of the conventional swing system can be employed by the self-balanced model ship support means.

また、枕15が台車17を介し台座12上で移動調節可能に設けられることにより、模型船14の位置調整も容易に行われるようになる。   Further, since the pillow 15 is provided on the pedestal 12 via the carriage 17 so as to be movable, the position of the model ship 14 can be easily adjusted.

さらに、模型船14を搭載して水平面内での方向調整を行うための一対の補助枕18，18が互いに離隔した位置で枕15に沿い位置調整可能に設けられるので、模型船14の船体中心線の方向を台座12の揺動面内に沿わせる操作が容易となり、これにより慣動半径を求めるための測定精度の向上を図ることができる。   In addition, a pair of auxiliary pillows 18 and 18 for mounting the model ship 14 and adjusting the direction in the horizontal plane are provided so as to be adjustable along the pillow 15 at positions separated from each other. The operation of bringing the direction of the line along the oscillating surface of the pedestal 12 is facilitated, whereby the measurement accuracy for obtaining the inertial radius can be improved.

図２は本発明の実施例２としての模型船用慣動半径測定装置を示す斜視図である。
図２に示すように、本実施例の場合も、基台10の支軸11により中間部を枢着されて左右に揺動可能に設けられた台座12が、その両端部に支軸11よりも低位置に重心を有する重錘13，13を備えるようにして、ヤジロベエのごとく自己バランスの機能を有する揺動式台座装置を構成している。 FIG. 2 is a perspective view showing a model ship inertial radius measuring apparatus according to a second embodiment of the present invention.
As shown in FIG. 2, also in the case of the present embodiment, a pedestal 12 that is pivotally attached to the middle portion by the support shaft 11 of the base 10 and is swingable to the left and right is provided at both ends thereof from the support shaft 11. In addition, the oscillating pedestal device having a self-balancing function is constructed like a jirobei by providing weights 13, 13 having a center of gravity at a low position.

そして、台座12の上面に、一対の枕15，15を介し模型船14を搭載して同模型船14の位置調整を行うための台車17が、凸型または凹型のレール16に沿って移動可能に設けられているが、本実施例２では、枕15と台車17との間に、台車17上で回動軸19を中心として回動しうるストッパー付きターンテーブル20が介在しており、枕15はターンテーブル20上に装着されている。   A carriage 17 for adjusting the position of the model ship 14 by mounting the model ship 14 on the upper surface of the base 12 via a pair of pillows 15, 15 is movable along the convex or concave rail 16. However, in the second embodiment, a turntable 20 with a stopper that can rotate around the rotation shaft 19 on the carriage 17 is interposed between the pillow 15 and the carriage 17. 15 is mounted on the turntable 20.

上述のように、本発明の実施例２では模型船14を枕15を介し搭載して同模型船14の水平面内での方向調整を行うためのターンテーブル20が台座12上に設けられているので、模型船14の船長方向に係る慣動半径を求めるための計測作業の終了後に、ターンテーブル20を９０度回転させれば、同模型船14の横方向に係る慣動半径を求めるための計測作業へ容易に移行することができるようになり、これにより模型船14の慣動半径測定作業が全体として極めて能率よく且つ正確に行われるようになる。   As described above, in the second embodiment of the present invention, the turntable 20 for mounting the model ship 14 via the pillow 15 and adjusting the direction of the model ship 14 in the horizontal plane is provided on the base 12. Therefore, if the turntable 20 is rotated 90 degrees after the measurement work for obtaining the inertial radius in the captain direction of the model ship 14 is completed, the inertial radius in the lateral direction of the model ship 14 is obtained. It becomes possible to easily shift to the measurement work, and as a result, the inertial radius measurement work of the model ship 14 can be performed extremely efficiently and accurately as a whole.

本発明の実施例１としての模型船用慣動半径測定装置を示す斜視図である。It is a perspective view which shows the inertial radius measuring apparatus for model ships as Example 1 of this invention. 本発明の実施例２としての模型船用慣動半径測定装置を示す斜視図である。It is a perspective view which shows the inertial radius measuring apparatus for model ships as Example 2 of this invention. 従来の模型船用慣動半径測定装置の一例を示す斜視図である。It is a perspective view which shows an example of the conventional inertial radius measuring apparatus for model ships. ブランコ方式による模型船の慣動半径測定手段を示す説明図である。It is explanatory drawing which shows the inertial radius measurement means of the model ship by a swing system.

符号の説明Explanation of symbols

１ 台
２ 模型船
３ 支持枠
４ 水平支軸
５ アーム
10 基台
11 支軸
12 台座
13 重錘
14 模型船
15 枕
16 レール
17 台車
18 補助枕
19 回転軸
20 ターンテーブル 1 unit 2 Model ship 3 Support frame 4 Horizontal support shaft 5 Arm
10 base
11 Spindle
12 pedestal
13 weight
14 Model ship
15 pillows
16 rails
17 carts
18 Auxiliary pillow
19 Rotation axis
20 Turntable

Claims (3)

支軸により中間部を枢着されて左右に揺動可能に設けられた台座が、同台座の両端部にそれぞれ上記支軸よりも低位置に重心を有する重錘を備えることにより、自己バランス型の揺動式台座装置を構成しており、上記台座上に、模型船を搭載して同模型船の位置調整を行うための枕が、移動調節可能に設けられたことを特徴とする、模型船用慣動半径測定装置。   A pedestal that is pivotally attached to the middle by a support shaft and swingable to the left and right is provided with a weight having a center of gravity at a position lower than the support shaft at both ends of the pedestal. The model is characterized in that a pillow for mounting a model ship and adjusting the position of the model ship is provided on the pedestal so as to be movable and adjustable. Marine inertial radius measuring device. 上記模型船を搭載して同模型船の水平面内での方向調整を行うための一対の補助枕が、互いに離隔した位置で上記枕上に沿い位置調整可能に設けられたことを特徴とする、請求項１に記載の模型船用慣動半径測定装置。   A pair of auxiliary pillows for mounting the model ship and adjusting the direction of the model ship in a horizontal plane are provided so as to be position-adjustable along the pillows at positions separated from each other. Item 2. An inertial radius measuring apparatus for a model ship according to Item 1. 上記台座上に、上記模型船を上記枕を介し搭載して同模型船の水平面内での方向調整を行うためのターンテーブルが設けられたことを特徴とする、請求項１に記載の模型船用慣動半径測定装置。   The model ship according to claim 1, wherein a turntable is provided on the pedestal to mount the model ship via the pillow and adjust the direction of the model ship in a horizontal plane. Inertial radius measuring device.
JP2005099858A 2005-03-30 2005-03-30 Model ship inertial radius measuring device Expired - Fee Related JP4411402B2 (en)

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CN107389263A (en) * 2017-08-22 2017-11-24 哈尔滨工程大学 A kind of pond ship model aids in levelling device
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CN101852641B (en) * 2010-06-04 2011-08-03 哈尔滨工程大学 Device for measuring and adjusting weight, center of gravity and rotary inertia of ship model
CN102735420B (en) * 2012-06-07 2014-10-08 中国海洋石油总公司 Buoy model yawing inertia checking device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107389263A (en) * 2017-08-22 2017-11-24 哈尔滨工程大学 A kind of pond ship model aids in levelling device
CN107389263B (en) * 2017-08-22 2019-09-27 哈尔滨工程大学 A kind of pond ship model auxiliary levelling device
CN111006846A (en) * 2019-11-21 2020-04-14 中国特种飞行器研究所 Based on no friction formula inertia barycenter adjusting device of pneumatic suspension
CN111006846B (en) * 2019-11-21 2021-05-07 中国特种飞行器研究所 Based on no friction formula inertia barycenter adjusting device of pneumatic suspension

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