JPS5855954B2 - dump boat - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a dump boat, and its purpose is to be a dump boat that is most suitable for construction work such as reclamation work in shallow waters, reclamation of dams, rivers, lakes, etc. in inland areas, cleaning, gravel extraction, etc. There are dump boats available.

Conventionally, sea reclamation work and other construction works and operations such as those mentioned above are usually carried out from the land side following sand bed construction, and this requires a large amount of cost.

In other words, earth, sand, crushed stone, etc. are transported by rock transport vessels, and then transferred to small boats for construction.

In addition, most of these carriers are not self-propelled, and 2~
Four vessels are being towed or pushed by a towing vessel, and therefore the rapid M
It was extremely difficult to operate not only in flowing waters but also in narrow waters.

Furthermore, due to the slowness of the tugboat's legs, it was almost impossible to operate in shallow waters below 3 meters, coupled with the effects of the ebb and flow of the tide.

On the other hand, self-propelled earth, sand, and crushed stone carriers have advantages in terms of loading capacity, but the construction costs, crew, and worker costs are prohibitive, and the maintenance costs are extremely high.

This is also subject to a major restriction, as it can only operate in sea areas of 4 meters or more.

The present invention was completed as a result of intensive research in view of the current situation.For example, it is equipped with a dump vessel with a capacity of 30, has a swamp of about 1.2 m when full, and weighs less than 20 m, and can be used in shallow waters and narrow sea areas. The construction and maintenance costs are extremely low, making it especially advantageous for use not only on the coast but also on water in inland areas such as dams, rivers, lakes, etc., and transporting it to the site by land is possible. To provide an extremely useful dump boat that is easy to operate, can be operated with a small boat operator's license, and can be operated safely.

Hereinafter, embodiments will be specifically described with reference to the drawings.

FIG. 1 is a side view, and FIG. 2 is a plan view.

The main body of the dump boat of the present invention is constructed by arranging a plurality of unit boats 1, 2.3 in parallel and connecting them so that they can be separated.Normally, three units shown in the drawings are used, but if necessary, It can be increased.

Each unit boat is connected by detachably connecting flanges formed on the side edges of the hull with bolts and nuts.

Also, if necessary, if the joint surfaces are joined by riveting,
The hull becomes even stronger.

1.2.3 shows each unit layer, and the unit layers 1.3 on both sides have the same structure and usually do not include an engine.

They are arranged and connected in parallel on both sides of the central unit layer 20.

Fixed ballast tanks 4 and 5 are provided at the rear of the unit layers 1 and 3, and are loaded with heavy objects.

18 and 19 have a length of 5, for example, on the outer upper edge of the unit layers 1 and 3.
．． It is a moving ballast (moving heavy object) installed at a length of 5 m.

6.7 is an auxiliary floating body detachably attached to the front part.

Reference numeral 8 denotes a dump vessel similar to that used in a normal dump truck, which is mounted on the front part of the central unit layer 2, and 15 is its fulcrum, and the dump vessel ascends and descends using 15 as the fulcrum.

16 is a telescopic three-stage telescopic vessel hoist cylinder, consisting of a cylinder piston, piston rod, etc., and has two units on the left and right.

17 is a dump vessel pedestal. Although the dump vessel is not shown, it is operated by a manual hydraulic lever operating device in a control room 10 with good visibility.

11 is an engine and a screw; a normal engine,
Equipped with two screws, it is a twin-shaft system.

Reference numeral 12 denotes rudders 13 and 14, which are auxiliary rudders provided in the unit layer 1.3.

Usually, the boat is constructed as a small boat with a length of 12 m or less, for example, 3
It is now possible to mount a vessel with a product of 0.

In this case, the swamp when loaded with a maximum of 30 tons is 1.2 m, so it can be operated at all times in shallow waters, rivers, lakes, etc., and can carry 30 tons of earth, sand, and rocks, and can sail repeatedly. .

Unlike conventional wide-open barges and side-barrel vessels, the dumping system lifts the dump vessel upwards and slides down using the weight of the loaded material, so as long as you know the approximate water depth of the work area, you can navigate freely. You can work in any desired position.

The present invention is constructed as described above and can be separated into each unit layer, so it can be separated according to construction requirements and mounted on a vehicle (trailer, etc.) for each unit layer, such as in dams, lakes and marshes in inland areas. It is easy to transport by land during construction work on rivers, etc.

By separating the vehicles, it is possible to pass without violating transportation regulations regarding cargo.

In addition, since each unit boat is connected in parallel, for example, if the iron plate thickness is 7.5 mm, the thickness of the joint will be 15 m, which strengthens the longitudinal axis of the entire ship and makes it similar to the keel of a ship. It fulfills its role, and has excellent sea resistance and resilience to withstand the effects of waves such as rolling in rough weather, providing high stability.

Further, it can be sufficiently effective as a support for the weight of the dump vessel.

Normally, when loading rocks, etc. into a dump vessel, they are loaded using a land-based machine, but when doing so, rocks, etc., are often dropped from a height of about 4 to 5 meters and then loaded, and the impact force is Although this is a serious problem, the unit layers are connected in parallel on both sides of the boat carrying the dump truck, so it has a strong ability to withstand this.
In addition, the stability of the hull can be maintained.

Additionally, when the ship's center of gravity moves forward as the dump vessel rises during dumping of cargo into the water, the ballast is moved rearward to maintain the balance of the ship. Return to its original position and restore the ship's center of gravity to its normal position.

The movement of the ballast is performed in conjunction with the dump hydraulic system.

As the dump vessel rises, the detachable auxiliary floating body at the front is designed to stabilize the ship by adjusting the fixed ballast, movable load ballast, etc. as described above, but due to the peculiarities of offshore construction, abnormal waves or Since it is predicted that an abnormal condition of the cargo will occur, in this case, an auxiliary floating body can be attached to the front part, and the buoyancy of the auxiliary floating body can prevent the front part from abnormally sinking. can be maintained and work done safely.

Normally, if it is removed, there will be no problem with navigation or transportation.

Further, since the dump boat of the present invention dumps the dump in the forward direction, the control room is located at a high place, so the visibility is wide and maneuvering is easy.

When dumping the cargo, as the dump vessel rises, the center of gravity begins to move forward as described above, and the ship begins to move backwards.In that case, it is possible to keep the ship stationary by operating the engine in slow forward rotation. This makes it possible to ensure dumping at a desired location.

The present invention is constructed as described above and can be separated into each unit layer, so it can be used not only in inland areas such as dams, rivers, and lakes, but also can be easily transported overland to the site on the coast. When shifting the center of gravity, the ballast tank at the rear can maintain balance well, and together with the action of the auxiliary floating body at the front, it is possible to work safely.

Since the dumping can be carried out in the forward direction, it is not only easy to carry out the work, but also it is possible to prevent the ship from sagging when dumping and dumping by rotating the engine forward.

Unit membranes 1 and 3 are integrally connected to both sides of the unit membrane 20 where the dump vessel is located, making it safe not only for dumping operations but also for navigation, and has good wave resistance and resilience (for heavy equipment, etc.). Despite this, the ship is able to successfully navigate against opposing currents.

Therefore, it is ideal for use in sea areas with strong currents.

[Brief explanation of the drawing]

FIG. 1 is a side view of the present invention, and FIG. 2 is a plan view. L 2,3...Unit film, 4,5.9...
...Ballast tank, 6,7...Auxiliary floating body, 8
...Dump vessel.

Claims (1)

[Claims] 1 Consisting of unit boats 1 and 2.3 connected in parallel so that they can be separated, unit boat 2 located in the center is equipped with an engine, a dump vessel at the front, and a ballast tank at the rear. A dump boat characterized in that the unit boats 1 and 3 arranged in parallel on both sides of the unit boat 20 are each equipped with a removable auxiliary floating body at the front and a ballast tank at the rear.