JPS6360178B2 - - Google Patents
Info
- Publication number
- JPS6360178B2 JPS6360178B2 JP18489583A JP18489583A JPS6360178B2 JP S6360178 B2 JPS6360178 B2 JP S6360178B2 JP 18489583 A JP18489583 A JP 18489583A JP 18489583 A JP18489583 A JP 18489583A JP S6360178 B2 JPS6360178 B2 JP S6360178B2
- Authority
- JP
- Japan
- Prior art keywords
- cutter
- drag head
- drag
- seabed soil
- excavation
- 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.)
- Expired
Links
- 238000009412 basement excavation Methods 0.000 claims description 31
- 230000000087 stabilizing effect Effects 0.000 claims description 8
- 239000002689 soil Substances 0.000 description 29
- 125000006850 spacer group Chemical group 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 210000000078 claw Anatomy 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
- E02F3/90—Component parts, e.g. arrangement or adaptation of pumps
- E02F3/92—Digging elements, e.g. suction heads
- E02F3/9212—Mechanical digging means, e.g. suction wheels, i.e. wheel with a suction inlet attached behind the wheel
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
- E02F3/90—Component parts, e.g. arrangement or adaptation of pumps
- E02F3/92—Digging elements, e.g. suction heads
- E02F3/9256—Active suction heads; Suction heads with cutting elements, i.e. the cutting elements are mounted within the housing of the suction head
- E02F3/9268—Active suction heads; Suction heads with cutting elements, i.e. the cutting elements are mounted within the housing of the suction head with rotating cutting elements
- E02F3/9281—Active suction heads; Suction heads with cutting elements, i.e. the cutting elements are mounted within the housing of the suction head with rotating cutting elements with axis of rotation in horizontal and transverse direction of the suction pipe
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
Description
【発明の詳細な説明】
本発明は、自航式サクシヨン浚渫船等に用いら
れるカツタ付きドラグヘツド装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a drag head device with a cutter used in a self-propelled suction dredger or the like.
一般に、自航式サクシヨン浚渫船は、第１図
（模式図）に示すようにドラグアーム２の先端に
取付けたドラグヘツド３を海底土４に接地させ、
船内に設けた浚渫ポンプにより海底土４を吸引し
てホツパー１内に蓄えるようにしながら浚渫を行
なつている。 Generally, a self-propelled suction dredger has a drag head 3 attached to the tip of a drag arm 2 grounded on the seabed soil 4, as shown in Fig. 1 (schematic diagram).
Dredging is carried out while sucking up seabed soil 4 and storing it in a hopper 1 using a dredging pump installed inside the ship.
ところで、ドラグヘツド３としては、従来、第
２図（側面図）に示すようなカリフオルニア型ド
ラグヘツド５が用いられており、このカルフオル
ニア型ドラグヘツド５は適用土質範囲が比較的広
く、水ジエツト用配管６のジエツト水流により海
底土を掘削移動するスカワリング効果により、海
底土を浚渫することができる。 By the way, as the drag head 3, a California type drag head 5 as shown in FIG. 2 (side view) has conventionally been used. Seabed soil can be dredged by the scouring effect, in which seabed soil is excavated and moved by jet water flow.
なお、第２図中の符号７は爪、８は吸入口部材
を示している。 In addition, the reference numeral 7 in FIG. 2 indicates a claw, and the reference numeral 8 indicates an inlet member.
しかしながら、このような従来のドラグヘツド
装置では、海底土が硬く締つている場合には、浚
渫能力が著しく低下するという欠点がある。 However, such conventional draghead devices have the disadvantage that their dredging ability is significantly reduced when the seabed soil is hard and compact.
そこで、従来、内部に回転式カツタを装備した
カツタ付きドラグヘツド装置も開発されている。 Therefore, a drag head device with a cutter equipped with a rotary cutter has been developed.
第３図（縦断面図）および第４図（側面図）
は、いずれも上述のカツタ付きドラグヘツド装置
の例を示している。 Figure 3 (longitudinal sectional view) and Figure 4 (side view)
Both show examples of the above-mentioned cutter-equipped drag head device.
第３図に示すカツタ付きドラグヘツド装置で
は、ケース９内に設けられた多数のカツタ１１に
よつて、海底土４が掘削されるが、このときの掘
削深度ｔはスライドプレート１２を用いて一定に
保たれている。 In the cutter-equipped drag head device shown in FIG. It is maintained.
なお、第３図中の符号１０は吸入口部材、Ｐは
海水の吸入口部材１０への流れ、Ｑはカツタ付き
ドラグヘツドの進行方向を示している。 In FIG. 3, reference numeral 10 indicates an inlet member, P indicates the flow of seawater to the inlet member 10, and Q indicates the direction of movement of the drag head with cutter.
また、第４図に示すカツタ付きドラグヘツド装
置では、姿勢安定用そり１４にカツタ付きドラグ
ヘツドをのせて、掘削する深さｔを一定に保つよ
うになつており、このカツタ付きドラグヘツド装
置では、ドラグヘツドＡと吸入口部材１５との間
にヒンジ１７を設けて水深等の変化に対応できる
ようになつている。 In addition, in the drag head device with cutters shown in FIG. 4, the drag head with cutters is placed on the posture stabilizing sled 14 to keep the excavation depth t constant. A hinge 17 is provided between the inlet member 15 and the inlet member 15 to accommodate changes in water depth and the like.
ところで、カツタを駆動する動力が一定の場
合、海底土４が硬質のときには掘削深さｔを薄く
する必要があり、逆に海底土４が軟質の場合に
は、掘削深さｔを厚くして掘削土量を多くするこ
とができる。 By the way, when the power to drive the cutter is constant, when the seabed soil 4 is hard, the excavation depth t needs to be made thinner, and conversely, when the seabed soil 4 is soft, the excavation depth t needs to be made thicker. The amount of excavated soil can be increased.
しかしながら、第４図に示すようなカツタ付き
ドラグヘツド装置の場合には、掘削深さｔが一定
であるので、ある深さｔに固定されてしまう。も
し、硬質の海底土４を掘削するときのカツタの掘
削深さｔに固定すると、軟質の海底土４を掘削す
る場合には、油圧モータ１６の動力の面で必要以
上に余裕を持ちすぎることになり、また、軟質の
海底土４を掘削するときのカツタの掘削深さｔに
固定すると、硬質の海底土４を掘削するときに
は、油圧モータ１６の動力が不足してカツタ１３
が停止するという不具合がある。 However, in the case of a cutter-equipped drag head device as shown in FIG. 4, the excavation depth t is constant, so it is fixed at a certain depth t. If the excavation depth t of the cutter is fixed when excavating hard seabed soil 4, when excavating soft seabed soil 4, the hydraulic motor 16 may have too much power than necessary. Furthermore, if the excavation depth t of the cutter is fixed when excavating soft seabed soil 4, the power of the hydraulic motor 16 is insufficient when excavating hard seabed soil 4, and the cutter 13
There is a problem that it stops.
本発明は、これらの問題点の解決をはかろうと
するもので、浚渫作業に際し、海底の土質に応じ
てカツタの掘削深度を調整できるようにした、カ
ツタ付きドラグヘツド装置を提供することを目的
とする。 The present invention aims to solve these problems, and aims to provide a draghead device with a cutter that can adjust the excavation depth of the cutter depending on the soil quality of the seabed during dredging work. do.
このため本発明のカツタ付きドラグヘツド装置
は、姿勢安定用そりに、水平横軸線を中心として
それぞれ回動可能に装着されたドラグヘツド本体
とドラグアーム先端の吸入口部材とをそなえ、上
記ドラグヘツド本体の内部に支持された海底掘削
用カツタと同カツタの駆動機構とが設けられると
ともに、上記カツタの掘削深度を調整すべく、上
記そりに対する上記ドラグヘツド本体のレベル調
節による掘削深度調整機構が設けられたことを特
徴としている。 For this reason, the drag head device with cutters of the present invention includes a drag head main body and a suction port member at the tip of the drag arm, each rotatably mounted on a sled for stabilizing the posture, and an inlet member at the tip of the drag arm. A cutter for submarine excavation supported by a cutter and a drive mechanism for the cutter are provided, and an excavation depth adjustment mechanism is provided by adjusting the level of the drag head body with respect to the sled in order to adjust the excavation depth of the cutter. It is a feature.
以下、図面により本発明の一実施例としてのカ
ツタ付きドラグヘツド装置について説明すると、
第５図はその掘削深度の深い状態での側面図、第
６図はその掘削深度の浅い状態での側面図であ
る。 Hereinafter, a drag head device with a cutter as an embodiment of the present invention will be explained with reference to the drawings.
FIG. 5 is a side view of the excavation at a deep depth, and FIG. 6 is a side view of the excavation at a shallow depth.
第５，６図に示すように、海底にそつて進行し
うる姿勢安定用そり１４には、ヒンジ１７が設け
られており、このヒンジ１７の水平横軸線を中心
にドラグヘツドケース１８などのドラグヘツド本
体２０とドラグアーム先端の吸入口部材１５とが
それぞれ回動可能に装着され、しかもこのドラグ
ヘツド本体２０と吸入口部材１５とは姿勢安定用
そり１４に対して別個に回動する。 As shown in FIGS. 5 and 6, the attitude stabilizing sled 14, which can move along the seabed, is provided with a hinge 17, and a drag head such as a drag head case 18 is moved around the horizontal horizontal axis of the hinge 17. The main body 20 and the suction port member 15 at the tip of the drag arm are rotatably mounted, and the drag head main body 20 and the suction port member 15 rotate independently with respect to the posture stabilizing sled 14.
また、ドラグヘツド本体２０の内部には、海底
掘削用カツタ１３と、このカツタ１３の駆動機構
としての油圧モータ１６とが設けられている。 Further, inside the drag head main body 20, a cutter 13 for seabed excavation and a hydraulic motor 16 as a drive mechanism for the cutter 13 are provided.
さらに、カツタ１３の掘削深度を調整できるよ
うに、姿勢安定用そり１４に対しドラグヘツド本
体２０のレベルを調節する掘削深度調整機構とし
て、伸縮自在のスペーサ１９が、ドラグヘツドケ
ース１８と姿勢安定用そり１４との間に挟装され
ている。 Further, in order to adjust the digging depth of the cutter 13, a retractable spacer 19 serves as a digging depth adjustment mechanism that adjusts the level of the drag head body 20 with respect to the posture stabilizing sled 14. It is sandwiched between 14 and 14.
なお、第５，６図中の符４′は軟質の海底土、
４″は硬質の海底土、ｔ１は軟質の海底土４′にお
けるカツタ１３の掘削深度、ｔ２は硬質の海底土
４″におけけるカツタ１３の掘削深度を示してい
る。 Note that the symbol 4' in Figures 5 and 6 indicates soft seabed soil.
4'' indicates the hard seabed soil, t1 the excavation depth of the cutter 13 in the soft seabed soil 4', and t2 the excavation depth of the cutter 13 in the hard seabed soil 4''.
本発明のカツタ付きドラグヘツド装置は上述の
ごとく構成されているので、軟質の海底の浚渫作
業を行なうには、まず、ドラグアームの先端の姿
勢安定用そり１４を海底に着座させるようにす
る。 Since the drag head device with a cutter according to the present invention is constructed as described above, in order to perform dredging work on a soft seabed, the attitude stabilizing sled 14 at the tip of the drag arm is first seated on the seabed.
そして、第５図に示すように、軟質の海底土
４′の浚渫を行なう場合には、カツタ１３の掘削
深度ｔ１が深く設定されており、油圧モータ１６
を作動させることにより、カツタ１３が回転し
て、海底土４′の掘削が行なわれる。 As shown in FIG. 5, when dredging soft seabed soil 4', the excavation depth t1 of the cutter 13 is set deep, and the hydraulic motor 16
By operating the cutter 13, the cutter 13 is rotated and the seabed soil 4' is excavated.
また、硬質の海底土４″の浚渫に際しては、第
６図に示すように、ドラグヘツド本体２０の先端
で、かつドラグヘツドケース１８とそり１４との
間にスペーサ１９が挟装されることにより、カツ
タ１３はヒンジ１７を中心にして上方へ移動する
ことになる。 Furthermore, when dredging hard seabed soil 4'', as shown in FIG. The cutter 13 will move upward around the hinge 17.
したがつて、硬質の海底土４″の掘削深度ｔ２
は、そり１４の下端とカツタ１３の下端との距離
であるので、スペーサ１９を用いてカツタ１３を
上方へ移動させると軟質の海底土４′におけるカ
ツタ１３の掘削深度ｔ１よりも浅くなり、硬質の
海底土４″を支障なく、掘削することができる。 Therefore, the excavation depth t2 of hard seabed soil 4''
is the distance between the lower end of the sled 14 and the lower end of the cutter 13, so if the cutter 13 is moved upward using the spacer 19, the excavation depth t1 of the cutter 13 in the soft submarine soil 4' becomes shallower than the excavation depth t1 in the hard seabed soil. 4" of seabed soil can be excavated without any hindrance.
このように、掘削深度を変えることができれば
海底土の硬軟に応じて、そのカツタ付きドラグヘ
ツドが有する動力を有効に活用して掘削、浚渫を
行なうことができる。 In this way, if the excavation depth can be varied, excavation and dredging can be carried out by effectively utilizing the power possessed by the drag head with the cutter, depending on the hardness and softness of the seabed soil.
なお、スペーサ１９の位置に油圧シリンダなど
の伸縮自在の部材を設置して、そり１４に対して
カツタ１３を上下できるようにしても同様の効果
を得ることができる。 Note that the same effect can be obtained even if a telescopic member such as a hydraulic cylinder is installed at the position of the spacer 19 so that the cutter 13 can be moved up and down with respect to the sled 14.
以上詳述したように本発明のカツタ付きドラグ
ヘツド装置によれば、姿勢安定用そりに、水平横
軸線を中心としてそれぞれ回動可能に装着された
ドラグヘツド本体とドラグアーム先端の吸入口部
材とをそなえ、上記ドラグヘツド本体の内部に支
持された海底掘削用カツタと同カツタの駆動機構
とが設けられるとともに、上記カツタの掘削深度
を調整すべく、上記そりに対する上記ドラグヘツ
ド本体のレベル調節による掘削深度調整機構が設
けられるという簡素な構成で、海底土質に応じた
カツタの掘削深度の調整が容易に行なえるように
なり、またカツタ付きドラグヘツド装置の有する
動力を有効に活用して、その浚渫作業を効率よく
行なうことができるという利点もある。 As detailed above, according to the cutter-equipped drag head device of the present invention, the posture stabilizing sled is provided with the drag head body and the suction port member at the tip of the drag arm, each of which is rotatably mounted around a horizontal horizontal axis. , a cutter for submarine excavation supported inside the drag head body and a drive mechanism for the cutter are provided, and an excavation depth adjustment mechanism by adjusting the level of the drag head body with respect to the sled in order to adjust the excavation depth of the cutter. With a simple configuration in which a cutter is installed, the excavation depth of the cutter can be easily adjusted according to the quality of the seabed soil, and the power of the cutter-equipped draghead device can be effectively used to efficiently carry out dredging work. Another advantage is that it can be done.
第１図は自航式サクシヨン浚渫船の作業状態を
示す模式図であり、第２〜４図は従来のドラグヘ
ツド装置を示すもので、第２図はその側面図、第
３図は第２図の改良型のカツタ付きドラグヘツド
装置を示す縦断面図、第４図は第３図の改良型の
装置を示す縦断面図であり、第５，６図は本発明
の一実施例としてのカツタ付きドラグヘツド装置
を示すもので、第５図はその掘削深度の深い状態
での側面図、第６図はその掘削深度の浅い状態で
の側面図である。
１……ホツパー、２……ドラグアーム、３……
ドラグヘツド、４……海底土、４′……軟質の海
底土、４″……硬質の海底土、１３……海底掘削
用カツタ、１４……姿勢安定用そり、１５……吸
入口部材、１６……駆動機構としての油圧モー
タ、１７……ヒンジ、１８……ドラグヘツドケー
ス、１９……掘削深度調整機構としてのスペー
サ、２０……ドラグヘツド本体、ｔ１，ｔ２……
カツタの掘削深度。
Figure 1 is a schematic diagram showing the working state of a self-propelled suction dredger, Figures 2 to 4 show a conventional drag head device, Figure 2 is a side view, and Figure 3 is the same as in Figure 2. FIG. 4 is a vertical cross-sectional view showing the improved drag head device with cutters, FIG. 4 is a longitudinal cross-sectional view showing the improved device in FIG. 3, and FIGS. 5 and 6 show a drag head with cutters as an embodiment of the present invention. Fig. 5 is a side view of the apparatus at a deep excavation depth, and Fig. 6 is a side view of the apparatus at a shallow excavation depth. 1...Hopper, 2...Drag arm, 3...
Drag head, 4... Seabed soil, 4'... Soft seabed soil, 4''... Hard seabed soil, 13... Seabed excavation cutter, 14... Sled for posture stabilization, 15... Inlet member, 16 ... Hydraulic motor as a drive mechanism, 17 ... Hinge, 18 ... Drag head case, 19 ... Spacer as excavation depth adjustment mechanism, 20 ... Drag head body, t1, t2 ...
Katsuta excavation depth.
Claims (1)
それぞれ回動可能に装着されたドラグヘツド本体
とドラグアーム先端の吸入口部材とをそなえ、上
記ドラグヘツド本体の内部に支持された海底掘削
用カツタと同カツタの駆動機構とが設けられると
ともに、上記カツタの掘削深度を調整すべく、上
記そりに対する上記ドラグヘツド本体のレベル調
節による掘削深度調整機構が設けられたことを特
徴とする、カツタ付きドラグヘツド装置。1 A posture stabilizing sled is equipped with a drag head body and a suction port member at the tip of the drag arm, each of which is mounted so as to be rotatable about a horizontal horizontal axis, and is similar to the cutter for submarine excavation supported inside the drag head body. What is claimed is: 1. A drag head device with a cutter, comprising: a drive mechanism for the cutter; and a digging depth adjusting mechanism by adjusting the level of the drag head main body with respect to the warp in order to adjust the digging depth of the cutter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18489583A JPS6078025A (en) | 1983-10-03 | 1983-10-03 | Drag head device with cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18489583A JPS6078025A (en) | 1983-10-03 | 1983-10-03 | Drag head device with cutter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6078025A JPS6078025A (en) | 1985-05-02 |
| JPS6360178B2 true JPS6360178B2 (en) | 1988-11-22 |
Family
ID=16161195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18489583A Granted JPS6078025A (en) | 1983-10-03 | 1983-10-03 | Drag head device with cutter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6078025A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102021894A (en) * | 2010-11-23 | 2011-04-20 | 章大初 | Rotating-wheel type seafloor leveler |
-
1983
- 1983-10-03 JP JP18489583A patent/JPS6078025A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6078025A (en) | 1985-05-02 |
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