JPH09119U - Underwater work space creation maintenance device - Google Patents
Underwater work space creation maintenance deviceInfo
- Publication number
- JPH09119U JPH09119U JP009531U JP953196U JPH09119U JP H09119 U JPH09119 U JP H09119U JP 009531 U JP009531 U JP 009531U JP 953196 U JP953196 U JP 953196U JP H09119 U JPH09119 U JP H09119U
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- Prior art keywords
- pressure
- water
- waterproof
- underwater
- resistant shell
- Prior art date
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Abstract
(57)【要約】
【課題】水中に没している構造物の点検や補修を、安全
かつ容易に行うための作業空間を、構造簡単で取扱い容
易かつ安価に創出すること。
【解決手段】適宜場所に人及び物の出入口を持ち、水中
構造物に対向する面を開放して、その開放面の周囲に止
水緩衝用パッキン(2)を取付けた防水耐圧殻(1)
を、浮力の2倍以上の水圧力を受ける受圧面積を持つと
ともに、横断面形状を水中構造物に当接する面から遠ざ
かるに従って狭めた、水中における作業空間創出維持装
置である。
(57) [Abstract] [PROBLEMS] To create a work space for safely and easily inspecting or repairing a structure submerged in water, having a simple structure, easy to handle, and inexpensive. A waterproof pressure-resistant shell (1) having an entrance and exit of a person and an object at an appropriate place, opening a surface facing an underwater structure, and attaching a water stop buffer packing (2) around the open surface.
Has a pressure receiving area for receiving a water pressure of twice or more the buoyancy, and has a cross-sectional shape that becomes narrower as the distance from the surface in contact with the underwater structure is reduced.
Description
【0001】[0001]
この考案は、水中に没している構造物を点検または補修等を行うための、水中 における作業空間創出維持装置に関するものである。 This invention relates to an underwater working space creation and maintenance device for inspecting or repairing a structure submerged in water.
【0002】[0002]
従来から、水中での作業は水は必ず有るものであり、致し方ないものと考えて 水中において行なわれているのが一般的であり、従って水中における溶接、塗装 、計測等の各種水中作業は緊急かつ必要不可欠のものに限り仕上がりの程度、強 度、耐久性ともに劣るのを承知の上で水中において湿式で実施されていた。 In the past, underwater work always involves water, and it is common practice that the work is carried out in water, considering it to be inadequate.Therefore, various underwater work such as welding, painting, and measurement in water is urgent. It was carried out wet in water, knowing that only indispensable materials were inferior in finish, strength and durability.
【0003】 一方、水を排除して行う施工方法としては、船舶等浮遊構造物では乾ドックに 構造物を入れ、この乾ドック内の水を排水して施工する方法、また、固定された 構造物であれば周囲に仮りの堤を設けて、堤内の水を排出し施工する方法等があ るが、これらの方法はいずれも多大な費用と手間がかかるのが現状であり、局部 的な施工には品質的に満足できなくても、もっぱら水中において施工しているの が現状である。[0003] On the other hand, as a construction method of removing water, a floating structure such as a ship is constructed by putting a structure in a dry dock and draining water in the dry dock, or a fixed structure. There are methods of constructing a temporary dike around the building and draining water from the dike, etc. for construction, but all of these methods are very costly and labor-intensive at present. Even though the quality of the construction is not satisfactory, it is currently underwater exclusively.
【0004】 また、水中に作業用空間を形成するために、箱状のものを水中構造物に取り付 ける場合もあるが、これは水中構造物と箱状物とは固定具を用いて固定するもの であるため、固定具が取り付けられる例えば鋼矢板壁面の如く限られたものを対 象とするものであり、しかも固定のために多大の手数と費用がかかるのが難点で あった。In some cases, a box-shaped object is attached to an underwater structure in order to form a working space in water. However, this is done by fixing the underwater structure and the box-shaped object using a fixture. Therefore, it is intended for limited objects such as a steel sheet pile wall to which a fixing device is attached, and it is a disadvantage that it takes a lot of trouble and cost for fixing.
【0005】[0005]
前記した従来の方法による場合、次のような解決を必要とする課題がある。 〔1〕作業空間を設けず水中において湿式で施工する場合。 (a)満足な品質が得られない。 (b)危険である。 (c)管理監督ができない。 (d)特殊な技能が必要である。 (e)作業能率が悪い。 (f)水流、潮流が早いと作業できない。 (g)作業時間が制約される。 In the case of the above-mentioned conventional method, there is a problem that requires the following solution. [1] A case where the work is performed in a wet condition in water without providing a work space. (A) Satisfactory quality cannot be obtained. (B) It is dangerous. (C) Management supervision is not possible. (D) Special skills are required. (E) Poor work efficiency. (F) The work cannot be performed if the water flow and tide are fast. (G) Work time is restricted.
【0006】 〔2〕従来の方法で水を排除して施工する場合。 (a)多大な費用がかかる。 (b)工事に時間、日数がかかる。 (c)大がかりな設備が必要である。 (d)施工場所が深い場合対処できない。 等、多くの問題点が指摘されている。[2] A case where water is removed by a conventional method for construction. (A) It costs a lot of money. (B) Construction takes time and days. (C) Extensive equipment is required. (D) If the construction site is deep, it cannot be dealt with. Many problems have been pointed out.
【0007】[0007]
上記の問題点を解決するために、本考案は、水中構造物の水面下の所要の場所 に、特別な取付け装置を用いることなく、水圧力のみにより確実に固定できるも のとするため、防水耐圧殻の横断面形状を流線型にして水流による影響を軽減し 、さらに形成される作業空間容積に対して出来るだけ水圧の受圧面積が大きくな るように特に考慮して、防水耐圧殻にかかる水圧力を防水耐圧殻の受ける浮力の 2倍以上に設定することによって安全性を確実なものとしている。 In order to solve the above-mentioned problems, the present invention provides a waterproof structure that can be securely fixed to a required place below the surface of an underwater structure only by water pressure without using a special mounting device. The cross section of the pressure shell is streamlined to reduce the effects of water flow, and the water applied to the waterproof pressure shell is considered especially so that the pressure receiving area of the water pressure is as large as possible with respect to the formed working space volume. The safety is ensured by setting the pressure at least twice the buoyancy of the waterproof pressure-resistant shell.
【0008】[0008]
上記の目的を達するための本考案は、水中構造物の水面下の所要の場所を局部 的に覆う防水耐圧殻の適宜場所に人及び物の出入口を設るとともに、水中構造物 に対向する面を開放し、この開放面の周縁部に止水緩衝用パッキンを取り付け、 この止水緩衝用パッキンを水中構造物に当接させて上記防水耐圧殻内部の水を排 水することにより作業用空間を創出するとき、この防水耐圧殻を浮力の2倍以上 の水圧力を受けて上記水中構造物に圧着させる受圧面積を持つとともに、横断面 形状を水中構造物に当接する面から遠ざかるに従って狭めた、水中における作業 空間創出維持装置である。 In order to achieve the above object, the present invention provides a watertight pressure hull that covers a required area below the surface of the underwater structure, providing an entrance and exit for people and objects at appropriate places, and a surface facing the underwater structure. The watertight buffer packing is attached to the periphery of the open surface, and the waterproof buffer packing is brought into contact with an underwater structure to drain the water inside the waterproof pressure-resistant shell. When creating a watertight pressure hull, the waterproof pressure hull has a pressure receiving area where it is pressed against the above-mentioned underwater structure by receiving a water pressure of at least twice the buoyancy, and its cross-sectional shape is reduced as it goes away from the surface in contact with the underwater structure. , A work space creation and maintenance device underwater.
【0009】 前記防水耐圧殻に設ける人及び物の出入口は、大気に連通して形成する場合と 、水中に没する部分に二重防水扉をもって設けて、別に大気に連通する通気管を 適宜場所に設ける場合とがある。[0009] The person and the object entrance and exit provided in the waterproof pressure-resistant shell are formed to communicate with the atmosphere, or a double waterproof door is provided at a part submerged in water, and a ventilation pipe communicating with the atmosphere is separately provided at an appropriate place. In some cases.
【0010】[0010]
以下図面にもとづいて詳細説明する。 〔第1実施例〕 図1〜図3は第1実施例を示し、図1は全体斜視図で、図2に使用状態を示し 、図3は使用状態における縦断面を示し併せて防水耐圧殻(1)に作用する水圧 の状態を説明するものである。 The details will be described below with reference to the drawings. First Embodiment FIGS. 1 to 3 show a first embodiment, FIG. 1 is an overall perspective view, FIG. 2 shows a use state, and FIG. 3 shows a longitudinal section in a use state. This explains the state of water pressure acting on (1).
【0011】 この防水耐圧殻(1)は平面形状が台形で両側面を傾斜して水中構造物(S) の壁面に当接する正面側に向かって拡大し、この正面と上面が開放されていて正 面側の周縁端に止水緩衝パッキン(2)が取り付けてあり、上面の開放部は人及 び物の出入口であって、内部に上方に突出する注排水口(3)が設けてあり、図 2・図3に示す如く正面開放側を水中構造物(S)に向けて止水緩衝パッキン( 2)を当て、上面を大気に開放した状態で内部の水を排水すれば、防水耐圧殻( 1)は背面側から水圧を受けて止水緩衝パッキン(2)を水中構造物(S)に強 く押し付け、水の進入を阻止して内部に作業空間が形成されるものである。The waterproof pressure-resistant shell (1) has a trapezoidal planar shape, is inclined on both sides, and expands toward the front side in contact with the wall surface of the underwater structure (S). A waterproof buffer packing (2) is attached to the peripheral edge on the front side, and an opening on the upper surface is an entrance and exit for people and goods, and a pouring and discharging port (3) protruding upward is provided inside. As shown in FIG. 2 and FIG. 3, a waterproof waterproof packing (2) is applied with the front open side facing the underwater structure (S), and the internal water is drained while the upper surface is open to the atmosphere. The shell (1) receives water pressure from the back side and strongly presses the water-stop buffer packing (2) against the underwater structure (S) to prevent water from entering, thereby forming a work space inside.
【0012】 次に防水耐圧殻(1)に作用する水圧について説明する。 図1に示す防水耐圧殻(1)の寸法を、幅5m×高さ4m×厚さ0.8mで、 台形の角度を45°とし、水没している高さを図3に示す如く3mとすると、水 没部分の防水耐圧殻(1)の容積は、 (5m−0.8m)×3m×0.8m=10.08m3 となり、この防水耐圧殻(1)に10.08トンの浮力が働く。Next, the water pressure acting on the waterproof pressure-resistant shell (1) will be described. The dimensions of the waterproof pressure-resistant shell (1) shown in FIG. 1 are 5 m wide × 4 m high × 0.8 m thick, the angle of the trapezoid is 45 °, and the submerged height is 3 m as shown in FIG. Then, the volume of the waterproofing pressure hull (1) water deaths moiety, (5m-0.8m) × 3m × 0.8m = 10.08m 3 next, 10.08 tons of buoyancy in the waterproof pressure hull (1) Works.
【0013】 防水耐圧殻(1)を水中構造物(S)に押し付ける水圧力は、図3に示す如く 水深3mにおいて平均0.15kg/cm2 の力が5m×3mの水没部分に働く から、 500cm×300cm×0.15kg=22500kg=22.5トン の力が防水耐圧殻(1)に働くことになり、 従って、防水耐圧殻(1)に作用 する浮力対押圧力の比は、 10.08:22.5 となる。このように浮力と水圧による押圧力の比が2倍以上であれば内部の作業 空間で安全に作業することができる。The water pressure that presses the waterproof pressure-resistant shell (1) against the underwater structure (S) is such that a force of 0.15 kg / cm 2 at a depth of 3 m acts on a 5 m × 3 m submerged portion as shown in FIG. A force of 500 cm × 300 cm × 0.15 kg = 22,500 kg = 22.5 tons acts on the waterproof pressure-resistant shell (1). Therefore, the ratio of buoyancy to pressing force acting on the waterproof pressure-resistant shell (1) is: 08: 22.5. If the ratio between the buoyancy and the pressing force due to the water pressure is twice or more, it is possible to work safely in the internal working space.
【0014】 以上の計算では防水耐圧殻(1)の自重や作業者及び機材等の重量を考慮して いないから実際には浮力はもっと小さい値となり、浮力:押圧力の比が大となっ て安全性は高まる。 また、水中の深い場所で本発明防水耐圧殻(1)を使用する場合は作用する水 圧が高くなるから水漏れの度合いも強まるが、同時に止水緩衝パッキン(2)を 押し付ける力も比例して高まるため止水力も強まって水漏れは防止できる。 ただし、強い水圧に耐えるだけの強度を防水耐圧殻(1)に持たせる必要があ ることは言うまでもない。The above calculation does not take into account the weight of the waterproof pressure-resistant shell (1) and the weights of workers and equipment, so that the buoyancy actually becomes a smaller value, and the ratio of buoyancy to pressing force becomes large. Safety increases. Further, when the waterproof pressure-resistant shell (1) of the present invention is used in a deep place in water, the water pressure acting on the water-resistant shell increases, so that the degree of water leakage increases, but at the same time, the force pressing the water-stop buffer packing (2) is also proportional. As it increases, the water stopping power also increases and water leakage can be prevented. However, it goes without saying that it is necessary for the waterproof pressure-resistant shell (1) to have sufficient strength to withstand strong water pressure.
【0015】 〔第2実施例〕 図4は第2実施例を使用状態で示した縦断面図で、前記第1実施例と同一のも のに同じ符号を付して説明する。 この第2実施例は水中構造物(S)の水平面に適用するものであって、倒椀形 にして下面を開放した防水耐圧殻(1)の開放面の周縁端に止水緩衝パッキン( 2)を取り付けてあり、上面中央に大気に連通する筒状の出入口(4)を設けた もので、この出入口(4)内に注排水口(3)が設けてある。 機能及び作用は第1実施例と同様であり、説明を省略する。[Second Embodiment] FIG. 4 is a longitudinal sectional view showing a second embodiment in use, and the same components as those in the first embodiment are denoted by the same reference numerals. This second embodiment is applied to the horizontal surface of an underwater structure (S), and is provided with a waterproof buffer packing (2) at the peripheral edge of the open surface of a waterproof pressure-resistant shell (1) having a falling bowl shape and an open lower surface. ) Is attached, and a cylindrical entrance (4) communicating with the atmosphere is provided at the center of the upper surface, and a filling port (3) is provided in the entrance (4). The functions and operations are the same as those of the first embodiment, and the description is omitted.
【0016】 〔第3実施例〕 図5は第3実施例を使用状態で示した縦断面図で、前記第1、第2実施例と同 一のものには同じ符号を付して説明する。 この第3実施例は水中構造物(S)の下面に適用するものであって、図4とは 逆に上面が開放された防水耐圧殻(1)の開放面の周縁端に止水緩衝パッキン( 2)を取り付けた構成としてある。 この第3実施例の場合は大気に連通する出入口を設けることが困難であるため 、底部に二重防水扉(5)を設けて水中より人及び物の出入口とするとともに、 別に大気に連通する通気管(6)を設けていることが前記した第1・第2実施例 と異なる点である。[Third Embodiment] FIG. 5 is a vertical cross-sectional view showing a third embodiment in use. The same parts as those of the first and second embodiments are designated by the same reference numerals for description. . This third embodiment is applied to the lower surface of an underwater structure (S). Contrary to FIG. 4, the waterproof cushioning shell (1) having an open upper surface is provided with a waterproof buffer packing at the peripheral edge of the open surface. (2) is attached. In the case of the third embodiment, since it is difficult to provide a doorway communicating with the atmosphere, a double waterproof door (5) is provided at the bottom to provide a doorway for people and objects from underwater, and to separately communicate with the atmosphere. The difference from the first and second embodiments is that a ventilation pipe (6) is provided.
【0017】 なお、本発明実施例に当たって、施工対象構造物が異形のものであっても防水 耐圧殻(1)の当接する周縁端の形状を構造物の形状に合わせることにより、対 応可能である。 また、使用する場所の水深が深過ぎて防水耐圧殻(1)に過大な水圧がかかる 場合は、内部を大気圧でなく適当な圧力に加圧して過度の押圧力による影響を緩 和することができる。In the embodiment of the present invention, even if the structure to be constructed is of an irregular shape, it can be handled by matching the shape of the peripheral edge of the waterproof pressure-resistant shell (1) with the shape of the structure. is there. Also, if the water depth of the place of use is too deep and excessive water pressure is applied to the waterproof pressure-resistant shell (1), pressurize the inside to an appropriate pressure instead of atmospheric pressure to mitigate the effect of excessive pressing force. Can be.
【0018】 以上の実施例で示した防水耐圧殻をクレーン等を利用して水中構造物の所要の 場所に止水緩衝用パッキンを当接させるべく吊り下げて、排水ポンプによりこの 防水耐圧殻内部の水を排出すると、外部との水位差が大きくなるに従って防水耐 圧殻は水圧により水中構造物に押し付けられ、内部の水が全部排水されると水圧 による押し付け圧力は最大となり、止水緩衝用パッキンが強く圧せられて止水を 果たすと同時に水中構造物と防水耐圧殻との間の緩衝を果たす。The waterproof pressure-resistant shell shown in the above-mentioned embodiment is hung by a crane or the like so that the waterproof cushion packing is brought into contact with a required place of the underwater structure, and the inside of the waterproof pressure-resistant shell is drained by the drainage pump. When the water is drained, the waterproof pressure-resistant shell is pressed against the underwater structure by the water pressure as the water level difference from the outside increases, and when all the water inside is drained, the pressing pressure due to the water pressure becomes maximum, and The packing is strongly pressed to stop water, and at the same time, serves as a buffer between the underwater structure and the waterproof pressure-resistant shell.
【0019】 このとき防水耐圧殻が受ける浮力は内部空間の容積に比例し、防水耐圧殻を水 中構造物に押し付ける力は当接面の面積に水圧を乗じた値であり、浮力に対する 水圧による押圧力が2倍以上であれば、内部に形成される人及び物の出入口また は通気管により大気と連通している作業空間内で安全に作業することが可能であ る。At this time, the buoyancy received by the waterproof pressure-resistant shell is proportional to the volume of the internal space, and the force for pressing the waterproof pressure-resistant shell against the underwater structure is a value obtained by multiplying the area of the contact surface by the water pressure. If the pressing force is twice or more, it is possible to work safely in the work space that communicates with the atmosphere by the entrance and exit of the person and the object formed inside or the ventilation pipe.
【0020】 また、防水耐圧殻の横断面形状を、吸着面から遠ざかるに従って狭めたことに より、同一受圧面積の開放面に対して、容積すなわち浮力を小さくすることが可 能となり、吸着面に対し浮力重心作用点が吸着面により近くなることにより安定 した自己吸着を得られる。 加えて外面に凹凸がなく流線型となって流水抵抗が少ないとともに、共振の原 因となるカルマン渦の発生を抑えて疲労破壊を防止することができる。Further, by reducing the cross-sectional shape of the waterproof pressure-resistant shell as the distance from the suction surface increases, the volume, that is, the buoyancy can be reduced with respect to the open surface having the same pressure receiving area. On the other hand, a stable self-adsorption can be obtained by bringing the buoyancy center of gravity action point closer to the adsorption surface. In addition, the outer surface is streamlined with no irregularities, and the flow resistance is low, and the generation of Karman vortex, which causes resonance, can be suppressed to prevent fatigue failure.
【0021】[0021]
本考案は、以上説明したような形態で実施され、以下に記載されるような効果 を奏する。 The present invention is embodied in the form described above and has the following effects.
【0022】 本考案の防水耐圧殻は水中構造物に固定するのに浮力の2倍以上の水圧を受け る構成としたことにより、取付具やバラストタンク等の浮力を減殺する装置を一 切必要とせず、内部を排水するのみで極めて簡単にコンクリート、鋼材等の如何 なる材質の水中構造物であっても固定することができて簡単に水中に作業用空間 を創出維持することができる点に最大の特徴を有する。[0022] The waterproof pressure hull of the present invention is configured to receive water pressure more than twice the buoyancy to be fixed to the underwater structure, so that there is no need for any device to reduce the buoyancy such as mounting fixtures and ballast tanks. It is very easy to fix underwater structures of any material, such as concrete and steel, just by draining the inside, and it is possible to easily create and maintain a working space underwater. Has the greatest features.
【0023】 防水耐圧殻の横断面形状を、吸着面から遠ざかるに従って狭めたことにより外 面が流線型となって流水抵抗が少なく、潮流や水流の影響をできるだけ受けない ようにしたことから、強潮流下の海中や波浪海域でも使用できる。Since the outer surface has a streamlined shape by reducing the cross-sectional shape of the waterproof pressure-resistant shell as the distance from the suction surface increases, the flow resistance is reduced, and the influence of the tidal current and the water flow is minimized. It can also be used in the sea below or in the waves.
【0024】 水中構造物に簡単に取り付けて水中に作業用空間を形成できるため、従来水中 で行われていた作業を陸上で行うのと同じ条件で施工できて、作業能率が向上し 、良好な品質の施工が可能となる。Since a work space can be easily formed in an underwater structure by being attached to an underwater structure, work that has been conventionally performed in water can be performed under the same conditions as when it is performed on land, thereby improving work efficiency and improving work efficiency. Quality construction is possible.
【0025】 水中での工事に比べ危険性がなく安全に作業ができるとともに、水中で施工す るための特殊な施工技術が不要となる。[0025] Compared to underwater construction, there is no danger and work can be performed safely, and special construction technology for underwater construction is not required.
【0026】 工事の管理監督が担当者により直接に行うことができることにより、確実な工 事が実施できる。[0026] Since the supervision and supervision of the construction can be performed directly by the person in charge, reliable construction can be performed.
【0027】 作業時間に制約されることがなく、長時間の作業が継続して行えるとともに、 垂直面、水平面、裏面あるいは水深の深い場所等のどのような場所でも対応して 利用できる。The work can be performed for a long time without being restricted by the work time, and can be used in any place such as a vertical surface, a horizontal surface, a back surface, and a deep place.
【0028】 局部的な施工に随時対処できるとともに、作業時間に制約されることがなく、 長時間の作業が継続して行えるため経済的である。It is economical because a local construction can be dealt with at any time, and a long-time work can be continuously performed without being restricted by a work time.
【0029】 構造が簡素化し重量が軽量化して、安価に提供でき簡便に使用できる。The structure is simplified and the weight is reduced, and it can be provided at low cost and can be used easily.
【図1】本考案の第1実施例を内側から見た全体斜視図
である。FIG. 1 is an overall perspective view of a first embodiment of the present invention as viewed from the inside.
【図2】図1に示す水中における作業空間創出維持装置
の使用状態斜視図である。FIG. 2 is a perspective view of a use state of the underwater work space creation and maintenance device shown in FIG. 1;
【図3】図2の中央縦断側面図で、併せて防水耐圧殻に
働く水圧状態を示す図である。FIG. 3 is a side view of the center longitudinal section in FIG. 2, showing a water pressure state acting on a waterproof pressure-resistant shell.
【図4】本考案の第2実施例を示す使用状態縦断側面図
である。FIG. 4 is a vertical sectional side view of a use state showing a second embodiment of the present invention.
【図5】本考案の第3実施例を示す使用状態縦断側面図
である。FIG. 5 is a vertical sectional side view showing a third embodiment of the present invention in a use state.
1 防水耐圧殻 2 止水緩衝用パッキン 3 注排水口 4 出入口 5 二重防水扉 6 通気管 DESCRIPTION OF SYMBOLS 1 Waterproof pressure-resistant shell 2 Packing for waterproof buffer 3 Injection / drainage port 4 Doorway 5 Double waterproof door 6 Vent
Claims (3)
的に覆う防水耐圧殻の適宜場所に人及び物の出入口を設
るとともに、水中構造物に対向する面を開放し、該開放
面の周縁部に止水緩衝用パッキンを取り付け、該止水緩
衝用パッキンを水中構造物に当接させて上記防水耐圧殻
内部の水を排水することにより作業用空間を創出すると
き、該防水耐圧殻を浮力の2倍以上の水圧力を受けて上
記水中構造物に圧着させる受圧面積を持つとともに、横
断面形状を水中構造物に当接する面から遠ざかるに従っ
て狭めたことを特徴とする水中における作業空間創出維
持装置。1. A door and a door for a person and an object are provided at an appropriate place of a waterproof pressure-resistant shell that locally covers a required place below the surface of the underwater structure, and a surface facing the underwater structure is opened. When a waterproofing gasket is attached to the periphery of the surface and the waterproofing gasket is brought into contact with an underwater structure to drain the water inside the waterproof pressure-resistant shell, a working space is created. Underwater characterized in that it has a pressure receiving area for compressing the pressure hull to the underwater structure by receiving a water pressure of at least twice the buoyancy, and the cross-sectional shape is reduced as the distance from the surface in contact with the underwater structure is reduced. Work space creation maintenance device.
を、大気に連通して形成した請求項1記載の水中におけ
る作業空間創出維持装置。2. The underwater working space creation / maintenance device according to claim 1, wherein an entrance and exit of a person and an object provided on the waterproof pressure-resistant shell are formed to communicate with the atmosphere.
口を、水中に没する部分に二重防水扉をもって設けると
ともに、別に大気に連通する通気管を適宜場所に設けた
請求項1記載の水中における作業空間創出維持装置。3. The watertight pressure hull according to claim 1, wherein the doors for persons and objects provided on the waterproof pressure-resistant shell are provided with a double waterproof door at a portion submerged in water, and a ventilation pipe communicating with the atmosphere is separately provided at an appropriate place. Work space creation and maintenance device underwater.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP009531U JPH09119U (en) | 1996-08-29 | 1996-08-29 | Underwater work space creation maintenance device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP009531U JPH09119U (en) | 1996-08-29 | 1996-08-29 | Underwater work space creation maintenance device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH09119U true JPH09119U (en) | 1997-03-11 |
Family
ID=18529162
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP009531U Pending JPH09119U (en) | 1996-08-29 | 1996-08-29 | Underwater work space creation maintenance device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH09119U (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005299222A (en) * | 2004-04-12 | 2005-10-27 | Penta Ocean Constr Co Ltd | Cofferdam case body and its installation method |
KR101328479B1 (en) * | 2012-11-30 | 2013-11-13 | 웅원건설 주식회사 | Pool side maintenance equipment |
JP2014134057A (en) * | 2013-01-11 | 2014-07-24 | Daiho Constr Co Ltd | Cofferdam structure and cofferdam method for structure |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4829593A (en) * | 1971-08-16 | 1973-04-19 | ||
JPS626029A (en) * | 1985-06-29 | 1987-01-13 | Sakai Eng Kk | Drainage structure for revetment |
JPH01280111A (en) * | 1988-05-02 | 1989-11-10 | Yokohama Rubber Co Ltd:The | Surface treatment of underwater structure |
JPH0329924A (en) * | 1989-06-28 | 1991-02-07 | Hitachi Ltd | Liquid crystal display element |
-
1996
- 1996-08-29 JP JP009531U patent/JPH09119U/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4829593A (en) * | 1971-08-16 | 1973-04-19 | ||
JPS626029A (en) * | 1985-06-29 | 1987-01-13 | Sakai Eng Kk | Drainage structure for revetment |
JPH01280111A (en) * | 1988-05-02 | 1989-11-10 | Yokohama Rubber Co Ltd:The | Surface treatment of underwater structure |
JPH0329924A (en) * | 1989-06-28 | 1991-02-07 | Hitachi Ltd | Liquid crystal display element |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005299222A (en) * | 2004-04-12 | 2005-10-27 | Penta Ocean Constr Co Ltd | Cofferdam case body and its installation method |
KR101328479B1 (en) * | 2012-11-30 | 2013-11-13 | 웅원건설 주식회사 | Pool side maintenance equipment |
JP2014134057A (en) * | 2013-01-11 | 2014-07-24 | Daiho Constr Co Ltd | Cofferdam structure and cofferdam method for structure |
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