JPH10181682A - Wave-resistant type grabdredger - Google Patents
Wave-resistant type grabdredgerInfo
- Publication number
- JPH10181682A JPH10181682A JP35571496A JP35571496A JPH10181682A JP H10181682 A JPH10181682 A JP H10181682A JP 35571496 A JP35571496 A JP 35571496A JP 35571496 A JP35571496 A JP 35571496A JP H10181682 A JPH10181682 A JP H10181682A
- Authority
- JP
- Japan
- Prior art keywords
- wave
- barge
- crane
- vertical
- dredger
- 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
Landscapes
- Jib Cranes (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、昇降用グラブバケ
ットを懸垂した旋回式クレーンが搭載されたグラブ浚渫
船であって、特に長周期（長波長）の波に対して揺動が
少なく、海象条件の厳しい海域でも安定して操業可能な
耐波型グラブ浚渫船に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a glove dredger equipped with a swiveling crane having a lifting grab bucket suspended therein, and in particular, has a small swing with respect to a long-period (long-wavelength) wave, and is suitable for marine conditions. The present invention relates to a wave-resistant grab dredger capable of operating stably even in severe sea areas.
【０００２】[0002]
【従来の技術】従来、グラブ浚渫船として、図８及び図
９に示すように、台船１の船首部（前方）に、グラブバ
ケット２を昇降可能に懸垂した旋回式クレーン３が搭載
されていて、グラブバケット２が海底で把み吊上げた土
砂を、クレーン３が旋回して、台船１に横付けされた土
運船４に移送するよう構成されたものが知られている。
この浚渫船は、土砂の性状や水深に関係なく、浚渫が可
能であって、汎用性に優れているため、広く使用されて
いる。なお、符号Ｆ，Ｒはそれぞれ船首側（前方）、船
尾側（後方）を示す。2. Description of the Related Art Conventionally, as a grab dredger, as shown in FIGS. 8 and 9, a swing type crane 3 in which a grab bucket 2 is suspended so as to be lifted up and down is mounted on the bow portion (front side) of a barge 1. It is known that the grab bucket 2 grasps and lifts the earth and sand at the bottom of the sea, and the crane 3 rotates to transfer the earth and sand to the earth carrier 4 which is laterally attached to the carrier 1.
This dredger is widely used because it is capable of dredging and excellent in versatility irrespective of the properties of soil and water depth. Reference numerals F and R indicate a bow side (front) and a stern side (rear), respectively.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、上記従
来の浚渫船は、波浪によってクレーン３のジブ３ａの先
端３ｂの上下方向の動揺量が０．５ｍを超えると、浚渫
が困難で、効率的に行われない。従って一般に周期が８
〜１０秒の長周期（波長１００〜１５０ｍの長波長）の
波浪中で、統計的代表値である有義波高が０．６ｍを超
える場合は浚渫が困難になり、海象条件が厳しい海域で
の稼働率が著しく低下するという欠点がある。However, in the above-mentioned conventional dredger, when the amount of vertical movement of the tip 3b of the jib 3a of the crane 3 exceeds 0.5m due to the waves, it is difficult to perform dredging efficiently. I can't. Therefore, in general, the period is 8
If the significant wave height, which is a statistically representative value, exceeds 0.6 m in a wave having a long cycle of 10 to 10 seconds (wavelength of 100 to 150 m), dredging becomes difficult, and in a sea area where sea conditions are severe. There is a disadvantage that the operation rate is significantly reduced.
【０００４】また、グラブ浚渫船の台船１に対する土運
船４の係留位置は、クレーン３のジブ３ａの先端３ｂが
届く位置である、最も動揺量の大きい船首部に制限され
る。そのため両者の接舷長さＬも限定されて、短くなる
ため、波浪中での係留が極めて困難であるという欠点が
ある。Further, the mooring position of the earth transport vessel 4 with respect to the barge 1 of the grab dredger is limited to the bow, which is the position where the tip 3b of the jib 3a of the crane 3 reaches, and has the largest amount of motion. For this reason, the length L of both berths is limited and shortened, and there is a disadvantage that mooring in waves is extremely difficult.
【０００５】そこで本発明の目的は、クレーンのジブの
先端の上下方向の動揺が、台船が全体として上下に揺れ
る上下揺（Ｈｅａｖｅ）及び前後部が交互に上下に揺れ
る縦揺（Ｐｉｔｃｈ）に基づくことに着目してなされた
ものであって、上記した従来技術の欠点を除くために、
台船がクレーンよりも前に延長されることによりその上
下揺及び縦揺が低減されると共に、台船の動揺中心とク
レーンジブの先端との水平距離が短縮されることによ
り、縦揺に起因するクレーンジブの先端の上下方向の動
揺が大幅に低減され、海象条件の厳しい海域でも安定し
て操業可能であり、しかも土運船の係留が容易な耐波型
グラブ浚渫船を提供することにある。Therefore, it is an object of the present invention that the vertical shaking of the tip of the jib of a crane causes vertical movement (Heave) in which the ship as a whole fluctuates up and down and vertical pitching (Pitch) in which the front and rear portions alternately fluctuate up and down. Based on the fact that it is based on, in order to eliminate the disadvantages of the prior art described above,
Vertical movement and vertical movement are reduced by extending the ship in front of the crane, and the horizontal distance between the rocking center of the ship and the tip of the crane jib is shortened, resulting in vertical movement. It is intended to provide a wave-resistant grab dredger capable of stable operation even in a sea area where the sea conditions are severe, and in which mooring of an earthmoving ship is easy, because vertical fluctuation of the tip of the crane jib is significantly reduced.
【０００６】[0006]
【課題を解決するための手段】上記の目的を達するため
に、請求項１に記載の発明の耐波型グラブ浚渫船は、グ
ラブバケット（２）を昇降可能に懸垂する旋回式クレー
ン（３）が配置された台船（１）の前方に、グラブバケ
ット（２）が通過・昇降し、海底の土砂を浚渫可能な鉛
直貫通孔（６０）を形成することで台船（１）の前方を
延長すると共に、旋回式クレーン（３）を台船（１）の
略中央に配置したものである。In order to achieve the above object, a wave-resistant glove dredger according to the first aspect of the present invention is provided with a slewing crane (3) for suspending a grab bucket (2) so as to be able to move up and down. A grab bucket (2) passes and ascends and descends in front of the barge (1) thus formed, thereby extending the front of the barge (1) by forming a vertical through hole (60) capable of dredging earth and sand on the sea floor. In addition, the swiveling crane (3) is arranged substantially at the center of the barge (1).
【０００７】請求項２に記載の発明は、請求項１に記載
の発明の構成に加えて、グラブ浚渫船に必要な主要装備
品（５０）を旋回式クレーン（３）が配置された台船の
後方に配置したものである。According to a second aspect of the present invention, in addition to the configuration of the first aspect, the main equipment (50) required for the grab dredger is provided by a barge on which the swivel crane (3) is arranged. It is arranged rearward.
【０００８】請求項３に記載の発明は、請求項１又は２
に記載の発明の構成に加えて、鉛直貫通孔（７０）が台
船（２０）の幅方向に拡げられるよう、土運船（４）が
接舷する側とは反対側の舷側の台船（２０）の一部が外
側に凸に拡げられたものである。なお、ここで主要装備
品（５０）は、居住区、主機・発電機等が設けられた機
関室、係留用ウンドラス、バケット格納スペース等を総
称する術語である。また、上記の課題を解決するための
手段に記載された括弧内の記号は図面及び後述する発明
の実施の形態に記載された記号に対応するものである。[0008] The invention according to claim 3 is the invention according to claim 1 or 2.
In addition to the configuration of the invention described in (1), the barge on the side of the side opposite to the side where the earth transport vessel (4) berths so that the vertical through hole (70) can be expanded in the width direction of the barge (20). A part of (20) is expanded outwardly. The main equipment (50) is a general term for a residential area, an engine room provided with a main engine / generator, etc., a mooring windlass, a bucket storage space, and the like. Further, the symbols in parentheses described in the means for solving the above problems correspond to the symbols described in the drawings and the embodiments of the invention described later.
【０００９】請求項１に記載の発明によれば、鉛直貫通
孔を付加形成することによって、台船の旋回式クレーン
より前方が従来例に比較して延長されたため、台船の上
下揺（Ｈｅａｖｅ）が低減されると共に、縦揺（Ｐｉｔ
ｃｈ）は従来例のそれに比較して大幅に低減される。し
かも台船の動揺中心とクレーンのジブの先端との間の距
離が短いため、例えば、波周期８〜１０秒の波浪中に対
して、台船の縦揺によるクレーンのジブの先端の上下方
向の動揺量は従来例のそれの１／５〜１／３に低減さ
れ、稼働率が大幅に向上する。また、台船が延長された
ため、クレーンの荷重移動による台船の傾斜（Ｔｒｉｍ
及びＨｅｅｌ）が減少するため作業が容易になると共
に、土運船に対する接舷長さが増大するため、従来のグ
ラブ浚渫船に比較して、土運船の安定且つ容易な係留が
可能になる。According to the first aspect of the present invention, the addition of the vertical through-hole extends the front of the barge in front of the swivel crane as compared with the conventional example, so that the barge can be moved up and down (Heave). ) Is reduced and pitch (Pit) is reduced.
ch) is greatly reduced as compared with that of the conventional example. In addition, since the distance between the center of shaking of the barge and the tip of the jib of the crane is short, for example, in waves in a wave cycle of 8 to 10 seconds, the vertical direction of the tip of the jib of the crane due to the vertical movement of the barge. Is reduced to 1/5 to 1/3 of that of the conventional example, and the operation rate is greatly improved. In addition, since the barge was extended, the tilt of the barge due to the load movement of the crane (Trim
And Heel), the work becomes easier, and the length of berthing to the soil carrier is increased, so that a stable and easier mooring of the soil carrier is possible as compared with the conventional grab dredger.
【００１０】また、請求項２に記載の発明によれば、請
求項１の発明の作用効果に加えて、台船のクレーンより
前方の部分が切離されれば、グラブ浚渫船に必要な主要
装備品が後方に残されるため、厳しい海域での浚渫工事
終了後は、内海乃至港内浚渫に利用可能な従来のグラブ
浚渫船に容易に転向可能である。なお、逆に従来のグラ
ブ浚渫船（又は前方部分が切離された浚渫船）に鉛直貫
通孔を備えた前方部分が追設され、本発明の耐波型浚渫
船に改造されることも可能である。According to the second aspect of the present invention, in addition to the functions and effects of the first aspect, if the part of the barge ahead of the crane is cut off, the main equipment necessary for the grab dredger is provided. Since the goods are left behind, after dredging work in severe sea area, it can be easily converted to a conventional glove dredger that can be used for inland sea or harbor dredging. Conversely, a conventional glove dredger (or a dredger whose front part is cut off) may be additionally provided with a front part provided with a vertical through hole, and may be converted into a wave-resistant dredger of the present invention.
【００１１】さらに、請求項３に記載の発明によれば、
請求項１又は２の発明の作用効果に加えて、グラブバケ
ットの左右方向（台船の幅方向）の移動範囲が拡がるた
め、台船の位置移動の回数（頻度）が少なくなる。Further, according to the third aspect of the present invention,
In addition to the operation and effect of the first or second aspect of the present invention, since the range of movement of the grab bucket in the left-right direction (width direction of the barge) is expanded, the number (frequency) of barge position movements is reduced.
【００１２】[0012]
【発明の実施の形態】本発明の実施の形態例について図
面を参照して説明する。それぞれ図１は本発明の実施の
形態例に係わる、耐波型グラブ浚渫船を示す側面図、図
２は図１の平面図、図３は本発明の他の実施の形態例に
係わる、耐波型グラブ浚渫船を示す平面図である。な
お、符号Ｆ，Ｒはそれぞれ船首側、船尾側を示す。Embodiments of the present invention will be described with reference to the drawings. 1 is a side view showing a wave-proof glove dredger according to an embodiment of the present invention, FIG. 2 is a plan view of FIG. 1, and FIG. 3 is a wave-proof glove according to another embodiment of the present invention. It is a top view which shows a dredge. The symbols F and R indicate the bow side and the stern side, respectively.
【００１３】本発明の実施の形態に係わる耐波型グラブ
浚渫船は、図１及び図２に示すように、グラブバケット
２を昇降可能に懸垂する旋回式クレーン３が、台船１０
の略中央に配置されると共に、その旋回式クレーン３の
前方に、グラブバケット２が通過・昇降し、海底の土砂
を浚渫可能に鉛直貫通孔６０（一般にはウエルと呼称さ
れている）が付加形成され、台船１０の前方が延長され
たものである。なお、台船１０の一方の舷の前部には土
運船４が係留されている。As shown in FIGS. 1 and 2, a wave-resistant glove dredger according to an embodiment of the present invention includes a swing type crane 3 which suspends a grab bucket 2 so as to be able to move up and down.
The grab bucket 2 passes and goes up and down in front of the swiveling crane 3, and a vertical through hole 60 (generally called a well) is added so as to be able to dredge the seabed sediment. It is formed and the front of the barge 10 is extended. The earth carrier 4 is moored to the front of one side of the pier 10.
【００１４】さらに、グラブ浚渫船に必要な主要装備品
５０が旋回式クレーン３の後方に配置されることは好ま
しいことである。なお、主要装備品５０は、居住区５
１、主機・発電機等が設けられた機関室５２、係留用ウ
インドラス５３、バケット格納スペース５４等よりな
る。そのうえ、他の実施の形態例として、図３に示すよ
うに、土運船４が接舷する側とは反対側の舷側の台船２
０の一部が外側に凸に拡げられ、鉛直貫通孔７０が台船
２０の幅方向に拡げられることが好ましい。Furthermore, it is preferred that the main equipment 50 required for the grab dredger is arranged behind the swivel crane 3. The main equipment 50 is the residential area 5.
1, an engine room 52 provided with a main engine, a generator, etc., a mooring windlass 53, a bucket storage space 54, etc. In addition, as another embodiment, as shown in FIG. 3, the pier 2 on the side of the port on the opposite side to the side on which the earthmoving ship 4 is berthed.
It is preferable that a part of 0 be expanded outwardly and the vertical through hole 70 be expanded in the width direction of the pier 20.
【００１５】本発明の実施の形態に係わる耐波型グラブ
浚渫船は、図８及び図９に示す従来例と比較すると、ク
レーン３の前方の斜線部分Ｓが延長され、その一部に鉛
直貫通孔（ウエル）６０が設けられ、それによって一部
が双胴型に形成されたものであるということも出来る。In the wave-resistant glove dredger according to the embodiment of the present invention, a hatched portion S in front of the crane 3 is extended and a vertical through-hole (partly) is provided as compared with the conventional example shown in FIGS. It can be said that a well 60 is provided, and a part thereof is formed in a twin-body type.
【００１６】浚渫に当っては、クレーン３のジブ３ａの
先端３ｂに懸垂されたグラブバケット２が鉛直貫通孔６
０を通って海底に降ろされ、海底の土砂を把んだ処で、
引揚げられ、ジブ３ａが旋回されて、グラブバケット２
に把まれた土砂が土運船４に移される。In the case of dredging, the grab bucket 2 suspended from the tip 3b of the jib 3a of the crane 3 has a vertical through hole 6
It was dropped to the bottom of the sea through 0, and when it grasped the sediment of the bottom of the sea,
The gib bucket 2 is lifted and the jib 3a is rotated.
The earth and sand captured by is transferred to the earth carrier 4.
【００１７】この耐波型グラブ浚渫船は、波浪によっ
て、台船１０が動揺するに伴って、クレーン３のジブ３
ａの先端３ｂが上下方向に動揺する。図４及び図５に、
従来例（船長８０ｍ）及び本発明の実施の形態に係わる
耐波型グラブ浚渫船（船長１１５ｍ）について、長波頂
不規則波の縦波中における単位波高当りの上下揺及び縦
揺振幅に及す波周期の影響を示す。それらによれば、台
船１０の上下揺の従来例のそれに対する低減量は小さい
が、縦揺は従来例のそれに対して半減している。なお、
長波頂波とは、うねりのように波方向が略一方向の波を
いう。また、縦波とは、台船の長手方向に寄せる波のこ
とである。The wave-resistant glove dredger has a jib 3 of the crane 3 as the barge 10 is shaken by the waves.
The tip 3b of a moves up and down. 4 and 5,
For the conventional example (captain 80m) and the wave-resistant grab dredger (captain 115m) according to the embodiment of the present invention, the wave period that affects the pitching and pitching amplitude per unit wave height in the longitudinal wave of the long-wave irregular wave. Shows the effect of. According to them, although the amount of reduction of the vertical motion of the barge 10 is smaller than that of the conventional example, the vertical vibration is reduced to half that of the conventional example. In addition,
The long wave top wave is a wave whose wave direction is substantially one direction like a swell. The longitudinal wave is a wave approaching in the longitudinal direction of the barge.
【００１８】また図６に縦波中におけるクレーン３のジ
ブ３ａの先端３ｂの上下揺に及す波周期の影響を示す。
それによれば、台船１０の動揺中心とクレーン３のジブ
３ａの先端３ｂとの距離が従来例のそれに比較して小さ
いため、台船１０の縦波によるクレーン３のジブ３ａの
先端３ｂの上下揺が従来例のそれに対して大幅に低減さ
れ、波周期８〜１０秒の波浪中において、従来例のそれ
の１／５〜１／３に低減される。FIG. 6 shows the influence of the wave period on the vertical swing of the tip 3b of the jib 3a of the crane 3 during the longitudinal wave.
According to this, since the distance between the center of shaking of the barge 10 and the tip 3b of the jib 3a of the crane 3 is smaller than that of the conventional example, the vertical movement of the barge 10 causes the jib 3a of the crane 3 to move vertically. The shaking is greatly reduced as compared with that of the conventional example, and is reduced to 1/5 to 1/3 of that of the conventional example in waves having a wave period of 8 to 10 seconds.
【００１９】さらに、図７にクレーン３のジブ３ａの先
端３ｂの上下動揺振幅（有義値）の許容値を０．５ｍと
した場合の稼動限界波高に及す波周期の影響を示す。そ
れによれば、浚渫作業が困難であった波周期８〜１０秒
の長周期の波浪中における稼動限界波高が従来例のそれ
の３〜５倍になり、稼働率が大幅に向上することが分
る。FIG. 7 shows the influence of the wave period on the operating limit wave height when the allowable value of the vertical swing amplitude (significant value) of the tip 3b of the jib 3a of the crane 3 is 0.5 m. According to this, the operating limit wave height in waves having a long wave period of 8 to 10 seconds, for which dredging work was difficult, becomes 3 to 5 times that of the conventional example, and the operation rate is greatly improved. You.
【００２０】台船１０のクレーン３より前方の斜線が施
された部分が切離されれば、グラブ浚渫船に必要な主要
装備品が後方に残されるため、厳しい海域での浚渫工事
終了後は、利用頻度の高い内海乃至港内浚渫に利用可能
な従来のグラブ浚渫船に容易に転向可能である。なお、
逆に従来のグラブ浚渫船（又は前方部分が切離された浚
渫船）に鉛直貫通孔を備えた前方部分が追設され、本発
明の耐波型浚渫船に改造されることも可能である。If the hatched portion of the barge 10 is separated from the crane 3, the main equipment necessary for the grab dredger is left behind, so after dredging work in severe sea area, It can be easily converted to a conventional grab dredger that can be used for inland or harbor dredging that is frequently used. In addition,
Conversely, a conventional glove dredger (or a dredger having a front part cut away) may be additionally provided with a front portion provided with a vertical through hole, and may be converted into a wave-resistant dredger of the present invention.
【００２１】また、土運船４が接舷する側とは反対側の
舷側が台船２０の幅方向に凸に拡げられ、鉛直貫通孔６
０が台船１０の幅方向に拡げられたものは、それだけグ
ラブバケット２の左右方向（台船の幅方向）の移動範囲
が拡がるため、台船１０の位置移動の回数（頻度）が少
なくなる。Further, the side of the ship opposite to the side on which the earthing ship 4 berths is expanded in the width direction of the barge 20 so as to protrude, and the vertical through hole 6 is formed.
In the case where 0 is expanded in the width direction of the barge 10, the range of movement of the grab bucket 2 in the left-right direction (width direction of the barge) is expanded accordingly, so that the number of times (frequency) of the position movement of the barge 10 is reduced. .
【００２２】[0022]
【発明の効果】以上のとおり請求項１に記載の発明によ
れば、台船の旋回式クレーンより前方が従来例に比較し
て延長されたため、台船の上下揺（Ｈｅａｖｅ）が低減
されると共に、縦揺（Ｐｉｔｃｈ）は従来例のそれに比
較して大幅に低減される。しかも台船の動揺中心とクレ
ーンのジブの先端との間の距離が短いため、例えば、波
周期８〜１０秒の波浪中に対して、台船の縦揺によるク
レーンのジブの先端の上下方向の動揺量は従来例のそれ
の１／５〜１／３に低減される。従って、稼動限界波高
が従来例のそれの３〜５倍になり、海象条件の厳しい海
域でも安定して操業可能となり、稼動率が大幅に向上す
る。As described above, according to the first aspect of the invention, since the front of the barge is longer than the conventional crane, the vertical movement (Heave) of the barge is reduced. At the same time, pitch (Pitch) is greatly reduced as compared with that of the conventional example. In addition, since the distance between the center of shaking of the barge and the tip of the jib of the crane is short, for example, in waves in a wave cycle of 8 to 10 seconds, the vertical direction of the tip of the jib of the crane due to the vertical movement of the barge. Is reduced to 1/5 to 1/3 of that of the conventional example. Therefore, the operation limit wave height is 3 to 5 times that of the conventional example, and the operation can be stably performed even in the sea area where the sea condition is severe, and the operation rate is greatly improved.
【００２３】また、台船が延長されたため、台船の船首
揺（Ｙａｗ）によるクレーンのジブの先端の左右動揺も
低減される共に、クレーンの荷重移動による台船の傾斜
（Ｔｒｉｍ及びＨｅｅｌ）が減少し、作業が容易にな
る。土運船に対する接舷長さが増大するため、従来のグ
ラブ浚渫船に比較して、土運船の安定且つ容易な係留が
可能になる。Further, since the barge is extended, the lateral movement of the tip of the crane jib due to the bowing (Yaw) of the barge is reduced, and the inclination (Trim and Heel) of the barge due to the load movement of the crane is reduced. Reduced and work easier. The increased berthing length for the earthmoving vessel allows for more stable and easier mooring of the earthmoving vessel compared to conventional glove dredgers.
【００２４】請求項２に記載の発明によれば、請求項１
の発明の効果に加えて、台船のクレーンより前方の部分
が切離されれば、グラブ浚渫船に必要な主要装備品が後
方に残されるため、頻度が少なく、工期も１〜２年と短
い、厳しい海域での浚渫工事終了後は、利用頻度の高
い、波の穏やかな内海乃至港内の浚渫に利用可能な従来
のグラブ浚渫船に容易に転向可能である。なお、逆に従
来のグラブ浚渫船（又は前方部分が切離された浚渫船）
に鉛直貫通孔を備えた前方部分が追設され、本発明の耐
波型浚渫船に改造されることも可能である。According to the invention described in claim 2, according to claim 1,
In addition to the effects of the invention, if the part of the barge in front of the crane is cut off, the main equipment necessary for the grab dredger is left behind, so the frequency is low and the construction period is as short as 1-2 years After the dredging work in severe sea area, it can be easily converted to a conventional glove dredger that can be used for dredging in inland seas and harbors where the frequency of use is gentle, which is frequently used. Conversely, a conventional grab dredger (or a dredger with the front part separated)
It is also possible to add a front part provided with a vertical through-hole to the water-resistant dredger of the present invention.
【００２５】また、請求項３に記載の発明によれば、請
求項１又は２の発明の効果に加えて、グラブバケットの
左右方向（台船の幅方向）の移動範囲が拡がるため、台
船の位置移動の回数（頻度）が少なくなる。According to the third aspect of the present invention, in addition to the effect of the first or second aspect, the range of movement of the grab bucket in the left-right direction (the width direction of the barge) is expanded. The number of times (frequency) of position movements of is reduced.
【図１】本発明の実施の形態に係わる耐波型グラブ浚渫
船を示す側面図である。FIG. 1 is a side view showing a wave-resistant glove dredger according to an embodiment of the present invention.
【図２】図１の平面図である。FIG. 2 is a plan view of FIG.
【図３】本発明の他の実施の形態に係わる耐波型グラブ
浚渫船を示す平面図である。FIG. 3 is a plan view showing a wave-resistant glove dredger according to another embodiment of the present invention.
【図４】長波頂不規則波の縦波中における単位波高当り
の上下揺振幅に及す波周期の影響を示すグラフである。FIG. 4 is a graph showing the influence of the wave period on the vertical oscillation amplitude per unit wave height in the longitudinal wave of the long crest irregular wave.
【図５】長波頂不規則波の縦波中における単位波高当り
の縦揺振幅に及す波周期の影響を示すグラフである。FIG. 5 is a graph showing an influence of a wave period on a pitch amplitude per unit wave height in a longitudinal wave of a long crest irregular wave.
【図６】縦波中におけるクレーンジブの先端の上下揺に
及す波周期の影響を示すグラフである。FIG. 6 is a graph showing the effect of the wave period on the vertical swing of the tip of the crane jib during a longitudinal wave.
【図７】クレーンジブの先端の上下動揺振幅（有義値）
の許容値を０．５ｍとした場合の稼動限界波高に及す波
周期の影響を示すグラフである。FIG. 7: Vertical swinging amplitude of crane jib tip (significant value)
9 is a graph showing the influence of the wave cycle on the operating limit wave height when the allowable value of the distance is 0.5 m.
【図８】従来例を示す側面図である。FIG. 8 is a side view showing a conventional example.
【図９】図８の平面図である。FIG. 9 is a plan view of FIG.
１ 台船 ２ グラブバケット ３ 旋回式クレーン ３ａ ジブ ３ｂ 先端 ４ 土運船 １０ 台船 ２０ 台船 ５０ 主要装備品 ５１ 居住区 ５２ 機関室 ５３ 係留用ウインドラス ５４ バケット格納スペース ６０ 鉛直貫通孔 ７０ 鉛直貫通孔 Ｆ 船首側 Ｒ 船尾側 Ｌ 接舷長さ Reference Signs List 1 barge 2 grab bucket 3 revolving crane 3a jib 3b tip 4 soil carrier 10 barge 20 barge 50 main equipment 51 living area 52 engine room 53 mooring windlass 54 bucket storage space 60 vertical through hole 70 vertical penetration Hole F Bow side R Stern side L Pier length
Claims (3)
式クレーンが配置された台船の前方に、前記グラブバケ
ットが通過・昇降し、海底の土砂を浚渫可能な鉛直貫通
孔を形成することで台船の前方を延長すると共に、前記
旋回式クレーンを台船の略中央に配置したことを特徴と
する耐波型グラブ浚渫船。1. A grab bucket is provided in front of a barge on which a revolving crane is suspended so as to be able to move up and down, so that the grab bucket passes and goes up and down to form a vertical through hole capable of dredging earth and sand on the seabed. A wave-resistant glove dredger extending the front of the barge and disposing the swiveling crane substantially at the center of the barge.
回式クレーンが配置された台船の後方に配置したことを
特徴とする請求項１に記載の耐波型グラブ浚渫船。2. The wave-resistant glove dredger according to claim 1, wherein main equipment necessary for the glove dredger is arranged behind a barge on which the swiveling crane is arranged.
るよう、土運船が接舷する側とは反対側の舷側の台船の
一部が外側に凸に拡げられたことを特徴とする請求項１
又は２に記載の耐波型グラブ浚渫船。3. A part of the barge on the side of the ship opposite to the side on which the earth transport ship berths is extended outward so that the vertical through-hole is widened in the width direction of the barge. Claim 1.
Or the wave-resistant glove dredger according to 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35571496A JPH10181682A (en) | 1996-12-24 | 1996-12-24 | Wave-resistant type grabdredger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35571496A JPH10181682A (en) | 1996-12-24 | 1996-12-24 | Wave-resistant type grabdredger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10181682A true JPH10181682A (en) | 1998-07-07 |
Family
ID=18445394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP35571496A Pending JPH10181682A (en) | 1996-12-24 | 1996-12-24 | Wave-resistant type grabdredger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10181682A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110453746A (en) * | 2019-08-27 | 2019-11-15 | 卢文涛 | Dredger and the husky control method of digging |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5878886A (en) * | 1981-11-02 | 1983-05-12 | Mitsubishi Heavy Ind Ltd | Dredge boat |
| JPS61171691A (en) * | 1985-01-24 | 1986-08-02 | Hitachi Zosen Corp | Dredger |
| JPH0840360A (en) * | 1994-07-29 | 1996-02-13 | Mitsubishi Heavy Ind Ltd | Crane barge with float |
-
1996
- 1996-12-24 JP JP35571496A patent/JPH10181682A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5878886A (en) * | 1981-11-02 | 1983-05-12 | Mitsubishi Heavy Ind Ltd | Dredge boat |
| JPS61171691A (en) * | 1985-01-24 | 1986-08-02 | Hitachi Zosen Corp | Dredger |
| JPH0840360A (en) * | 1994-07-29 | 1996-02-13 | Mitsubishi Heavy Ind Ltd | Crane barge with float |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110453746A (en) * | 2019-08-27 | 2019-11-15 | 卢文涛 | Dredger and the husky control method of digging |
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