JPH1076989A - Work barge for drain construction - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce weight of a work barge, miniaturize her and eliminate high lift working by suspending a casing pipe and a casing guide by a leader provided on an end part of a hull and providing a folded tower of a drain material and a roll of the drain material on a deck. SOLUTION: A leader 1 is set on an end part of a hull, and a casing pipe 2 is suspended down along its outside. A lower part of the casing pipe 2 is surrounded by a casing guide 6. Additionally, a return tower 4 is provided in parallel with the leader 1, and a drain material 5 is led to the side of the leader 1 by winding up a lifting roller 41 provided inside it by a winch 42. A driving method is to arrange the rolled type drain material 5 down to the lowest end of the casing pipe 2 through a brake 43, the return tower 4, the brake 43, a windshield trunk 3 and guide rollers 11, 21. Thereafter, a head end is made to reach a water bottom by lowering the casing pipe 2, an attitude and a position of the casing pipe 2 are secured by lowering the casing guide 6 and it is further intruded.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a construction work boat for press-fitting a belt-shaped drain material into a water bottom.

[0002]

2. Description of the Related Art Conventionally, a drain construction work boat has been used in which a strip-shaped drain material such as a plastic board is driven into a seabed or a lake bottom to improve soft ground.

[0003]

However, the following problems exist in the conventional work vessel for drain work. <B> The casting device has a tower structure, and the tower moves on a work boat. As a result, the whole was large and heavy, requiring a large amount of cost for manufacturing and operation. <B> An open space is opened in the center of the hull, and draining work is performed inside the open space. For this reason, the work width was narrow with respect to the ship width, which was uneconomical. <C> Since the device for placing the drain is located at the top of the tower structure, it is necessary to perform the work at a high place. <D> Since the work is performed at a high position, a heavy roll of drain material must be lifted to a high position, which is also uneconomical. <E> Since the turret has a structure that moves on the ship, the hull tilts with the movement of the driving device. For this reason, it is difficult to calculate an accurate driving dimension of the drain material. <F> Because of the construction of the huge tower, it is easily affected by wind pressure and the hull movement is large, so the position must be constantly corrected.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned conventional problems, and is lighter, smaller, and does not require high-altitude work as compared with a conventional work boat of this kind. The purpose is to provide a work boat for drain construction.

[0005]

In order to achieve the above-mentioned object, a drainage work boat according to the present invention is provided with a leader at an end of a hull, and the leader uses a casing pipe and a casing pipe. It features a work boat for drain construction, which hangs a casing guide that protects the surroundings, installs a turnover tower that folds drain material on the deck of the hull, and installs rolls of drain material on the deck. Things.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a work vessel for drain work according to the present invention will be described below with reference to the drawings.

<A> Overall configuration. The work boat of the present invention is provided with the leader 1 at the end of the hull,
This is a structure in which the casing pipe 2 is hung along the outside (on the water side) of the leader 1, and is not a center well structure. A drain material windshield trunk 3 is attached inside the leader 1 (on the ship side) along the leader 1. In addition, a drain material return tower 4 is established independently of the leader 1.
The above are the main structures installed on the hull.

<B> Leader 1. The leader 1 suspends the casing pipe 2 by a rope via the roller at the upper end. Two hanging ropes of the casing pipe 2 are arranged. One is to unwind into the water bottom by unwinding the winch by the weight of the casing pipe 2. The other one has a structure in which the casing pipe 2 is pulled up by winding the winch. The drain material 5 is lifted up to the uppermost part along the side surface of the leader 1 on the ship side, and is introduced into the casing pipe 2 in a state where the drain material 5 is folded back by the uppermost leader 1 side guide roller. On the ship side of the leader 1, a drain material windshield trunk 3 is attached in parallel. By introducing the drain material 5 into the inside of the trunk 3, it is possible to prevent the drain material 5 from being perturbed by the wind.

<C> Casing pipe 2. A pipe-side guide roller 21 is attached to the top of the casing pipe 2 suspended from the leader 1.
Since the pipe-side guide roller 21 moves up and down integrally with the casing pipe 2, even if the casing pipe 2 moves down and the distance to the leader 1 side guide roller 11 at the uppermost part of the leader 1 increases, the drain material 5 is removed. It can be introduced into the casing pipe 2 in a stable state.
A water injection valve 22 is provided at the upper part of the casing pipe 2 to inject water into the pipe to prevent the drain material 5 from rising when the casing pipe 2 is pulled out. Alternatively, an air seal valve 2 is provided at the inlet of the drain material 5 into the casing pipe 2.
In some cases, compressed air is sealed in the casing pipe 2 by opening and closing the valve 23 to achieve the same effect.

<D> Casing guide 6. A casing guide 6 is provided around a lower portion of the casing pipe 2.
Besieged by. The casing guide 6 is a frame having a truss structure, and descends to the water bottom surface integrally with the casing pipe 2 to accurately set a casting point. Further, since the casing pipe 2 penetrates deeply into the soft ground, maintaining the directionality by the casing guide 6 prevents the casing pipe 2 from penetrating and being bent.
At the lower end of the casing guide 6, an underwater cutter 61 is mounted so as to cross the lower end of the casing pipe 2, and cuts the drain material 5 exposed from the lower end of the casing pipe 2 at a predetermined position.

<E> Turning tower 4. On the deck of the work boat, a turning tower 4 is installed in parallel with the leader 1. A lifting roller 41 is mounted inside the turning tower 4, and the lifting roller 41 is installed outside the turning tower 4, and a torque-controllable winch 4 is provided.
Wind up with 2. The drain material 5 introduced from the lower part of the folding tower 4 is folded by the lifting roller 41 and guided to the reader 1 side. Therefore, drain material 5
Can be configured to always exert a constant tension.

<F> Joining device. When the supply of the drain material 5 of one roll arranged on the deck is completed, the drain material 5 of the new roll must be connected. For this purpose, brakes 43 are installed on both sides of the folding tower 4, and the drain material 5 is restrained by opening and closing the brake 43. And turn tower 4
In a state where the supply is restricted by the brake 43 on the introduction side to the drain, a new roll is joined to the drain material 5. The joining is performed by sewing with a needle or other known methods. If the drain material 5 is restrained by the brake 43 on the introduction side, the supply to the casing pipe 2 is stopped. During that time, a sufficient feed amount is secured by gradually lowering the lifting roller 41 of the turning tower 4. can do.

[0013]

[Working example] Next, a method of driving the drain material 5 on the water bottom using the above-described apparatus group will be described.

<A> Arrangement of drain material 5 The roll-shaped drain material 5 installed on the deck of the work boat is pulled out, and the brake 43, the folding tower 4, the brake 43,
The windshield trunk 3, the leader-side guide roller 11, and the pipe-side guide roller 21 are arranged in this order to the lowermost end of the casing pipe 2. A known folding device is attached to the lower end of the casing pipe 2, and the drain member 5 can be folded and fixed by extending the jack.

<B> The casing pipe 2 descends. In this state, the winch on the penetrating side is unwound, and the casing pipe 2 is lowered so that its tip reaches the water bottom. When the position is determined, the casing guide 6 is lowered to prevent the subsequent movement, and the posture and the position of the casing pipe 2 are secured. If you unwind the winch on the penetrating side,
The casing pipe 2 penetrates into the water bottom by its own weight.

<C> Drain material 5 fixation. Pull out the pipe. When the predetermined depth is reached, only the casing pipe 2 is lifted by winding the rope with the winch on the pull-out side. At this time, the downward push rod is exposed from the tip of the casing pipe 2 according to the amount of rise of the casing pipe 2. For that purpose, the drain material 5 is left underground by the push rod, and only the casing pipe 2 is pulled up. At the time of lifting, the casing pipe 2
In some cases, the drain material 5 is prevented from rising together by, for example, injecting water into the inside.

<D> Cutting. While the casing pipe 2 is being pulled out, the casing guide 6
Remains fixed at the bottom of the water. When the casing pipe 2 is completely pulled out of the ground, the drawing is stopped once. And the underwater cutter 61 at the lower end of the casing guide 6
Is operated to cut the drain material 5. As a result, the driving of the drain material 5 from the fixing position to the water bottom is completed.

[0018]

[Effect of the present invention] The work vessel for drain construction of the present invention has the above-described effect, and the following effects can be obtained. <A> With the roll of the drain material 5 placed on the deck, it is possible to continue the operation of placing the material on the water floor. Therefore, it is possible to perform extremely safe and efficient work as compared with the conventional method in which five rolls of the heavy drain material are lifted to a high place to perform the work. <B> In the middle of the supply route of the drain material 5,
Is provided to give room and tension. Therefore, it is possible to stop the delivery from the roll and perform the joining operation to the new drain material 5 while continuing the casting operation to the water bottom. As described above, the drain material 5 can be extended as much as possible without interrupting the operation, so that the operation is extremely efficient. <C> The leader 1 lifts the casing pipe 2,
Since only the hanging operation is performed, it is sufficient to provide only a guide roller, and there is no need to install complicated devices and equipment at a high place. Therefore, the entire device can be reduced in weight and size, and the manufacturing cost can be reduced. <D> Since the area seen from the side is reduced by reducing the weight and size, the influence of the wind pressure is also reduced. Therefore, even in a strong wind, the hull moves and swings little, and stable work can be performed. <E> Since the huge tower structure does not move on the ship, the inclination of the hull does not occur, and the accurate casting length can be easily calculated.

[Brief description of the drawings]

FIG. 1 is an explanatory view of an embodiment of a work boat for drain work according to the present invention.

FIG. 2 is an explanatory diagram of a construction order of drain construction.

FIG. 3 is an explanatory view of a construction order of drain construction.

FIG. 4 is an explanatory diagram of a construction order of drain construction.

FIG. 5 is an explanatory diagram of a construction order of drain construction.

FIG. 6 is an explanatory view of a construction order of drain construction.

 ──────────────────────────────────────────────────続 き Continued on the front page (71) Applicant 000166627 Goyo Construction Co., Ltd. 2-2-2-8 Koraku, Bunkyo-ku, Tokyo (71) Applicant 000206211 Taisei Corporation Co., Ltd. 1-25-1 Nishishinjuku, Shinjuku-ku, Tokyo No. (71) Applicant 592089010 Daito Kogyo Co., Ltd. 1-338-6 Kameido, Koto-ku, Tokyo (71) Applicant 000219406 Toa Construction Industry Co., Ltd. 5 Yonbancho, Chiyoda-ku, Tokyo (71) Applicant 000222668 Toyo Construction Co., Ltd. Company 4-1-1 Koraibashi, Chuo-ku, Osaka-shi, Osaka (71) Applicant 000236610 Fudo Construction Co., Ltd. 4-2-1-16, Hirano-cho, Chuo-ku, Osaka-shi, Osaka (71) Applicant 597068401 Marubeni Construction Machinery Sales Co., Ltd. 1972-5 Nihonbashi Koami-cho, Chuo-ku, Tokyo (72) Inventor Shuji Matsuo 5292 Aio, Aioi-shi, Hyogo IHI Corporation Inside Tech (72) Inventor Haru Takahashi 5292 Aioi, Aioi City, Hyogo Prefecture Inside AIH Amtech Co., Ltd. (72) Inventor Masashi Kuwana 5292 Aioi, Aioi City, Hyogo Prefecture IHI Corporation Within Amtec (72) Inventor Norihiko Fujimoto 5292 Aioi, Aioi City, Hyogo Prefecture Within AITEC Amtech Co., Ltd. (72) Inventor Choshiro Akamatsu 5292 Aioi, Aioi City, Hyogo Prefecture AIH I.I. Within Amtec (72) Inventor Junzo Okubo 119 Ito-cho, Chuo-ku, Kobe City, Hyogo Prefecture Inside Japan Marine Engineering Co., Ltd. (72) Inventor Kazuaki Kanemoto 119, Ito-cho, Chuo-ku, Kobe City, Hyogo Prefecture Nippon Marine Engineering Co., Ltd. (72) Inventor Ryoji Toyosawa 119, Ito-cho, Chuo-ku, Kobe, Hyogo Prefecture, Japan Nippon Kaiiko Co., Ltd. (72) Inventor Masakazu Hirata 119, Ito-cho, Chuo-ku, Kobe, Hyogo Prefecture, Japan Nippon Kaiiko Co., Ltd. (72) Invention Ebisu Masayuki 119 Ito-cho, Chuo-ku, Kobe City, Hyogo Prefecture Nihon Kaiko Co., Ltd.

Claims (2)

[Claims] 1. A leader is installed at an end of a hull, and a casing pipe and a casing guide for protecting the periphery of the casing pipe are suspended by the leader. A folding tower for folding drain material is installed on a deck of the hull. A drain construction work boat constructed by installing rolls of drain material on the deck 2. A leader is installed at the end of the hull, and a casing pipe and a casing guide for protecting the periphery of the casing pipe are suspended by the leader. A folding tower that folds the drain material is installed on the deck of the hull. A drain construction work ship with a roll of drain material installed on the deck, and a brake and joining device that restrains the movement of the drain material between the roll and the turning tower.