JPS625253Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is an underwater automatic method for automatically applying underwater curing anti-corrosion or antifouling paint to the surfaces to be painted below the water surface, such as the outer panels of ships and underwater structures. The present invention relates to a spray painting device.

In recent years, offshore structures, such as oil storage barges, have become larger and larger, and their construction is actively underway. Because it is impossible to move the paint, the need for underwater maintenance increases, and automating underwater painting work has become a major issue.

To date, various types of underwater painting equipment have been proposed, but many of them are in principle impossible to paint or have low efficiency, and although they can paint, they do not have a moving device, so it is difficult to apply them to various locations. The disadvantage was that there were restrictions.

Furthermore, even if people have mobility devices, most of them are wheeled, suspended, or carried by divers, and currently there are no devices capable of moving freely underwater.

Therefore, the present invention aims to create a ship that eliminates the shortcomings of conventional technology from the viewpoints of painting large flat surfaces and large curved surfaces underwater, automating underwater painting, establishing a painting technology that allows long-term maintenance, and preventing pollution caused by paint. The present invention has been made for the purpose of providing an underwater automatic spray coating device for underwater structures.

That is, the underwater automatic spray painting device of the present invention has the following features:
Unlike conventional technology, after painting, it separates from the surface to be painted.
It is a combination of a submersible that can move to the next surface to be coated without contact, and a highly efficient underwater space-type underwater coating device, and is characterized by the ability to efficiently form a complete coating underwater. The underwater automatic spray coating equipment consists of a thruster device that can move forward, backward, left and right with respect to the underwater surface to be coated, a ballast chamber that can be moved up and down for vertical operation, and a A coating chamber with a built-in coating device is formed in the center of an underwater moving body made of lightweight material and has an adsorption device that can be fixed to a surface, and a coating chamber is formed at the periphery of the coating chamber in contact with the surface to be coated. It is constructed by providing a seal tube, a ballast chamber for draining water from the coating chamber and injecting water into the coating chamber, and further providing an automatic operating device for these.

The details of the present invention will be explained below based on the drawings. FIG. 1 is a side view of an underwater automatic spray coating apparatus according to an embodiment of the present invention, and FIG. 2 is a plan view of the same as seen from the top.

First, one vertical thruster 6 is attached to each end of the main body 1 of the underwater moving body that constitutes this underwater automatic spray painting device, and one side thruster 7 is attached to the lower part. A ballast chamber 8 for vertical control is provided.

These subsea air motor-type thruster devices and ballast devices can be moved freely to the left and right by sending compressed air to the side thrusters 7 for lateral movement, and can be moved freely to the left and right by operating the subsea controller 5, and for movement in the straight direction, Compressed air is sent to the vertical thruster 6, allowing it to move freely forward and backward.Furthermore, when moving in the vertical direction, compressed air is sent to the ballast chamber 8 for vertical control.
Alternatively, by pumping in seawater, it can move freely up and down, and in addition, it can freely stop at any designated location underwater.

In the center of the main body 1 is a painting chamber 2 which is a waterproof box.
A gutter is installed around the periphery of the contact portion with the surface to be painted (not shown) located on the left side of FIG. 1, and a seal tube 15 which expands or contracts as appropriate by supplying and discharging air is housed therein.

The outer surface of the seal tube 15 is covered with an outer skin 16 made of a soft material such as sponge, and waterproof electromagnets 14 are arranged at the four corners of the main body 1 outside the outer skin 16.

In addition, a ballast chamber 3 having the same volume as the painting chamber 2 is provided opposite to the painting chamber 2, and each is provided with a painting chamber atmosphere release valve 9 and a ballast chamber atmosphere release valve 10, and the ballast chamber is connected by an atmosphere release collecting pipe 18. 3. A ballast chamber seawater valve 12 is installed in the lower seawater valve chamber 4, and a ballast chamber connection valve 11 connects the painting chamber 2 and ballast chamber 3.
The painting room and ballast room are connected through a connecting pit 13.

The drainage mechanism using these devices is constructed by moving the main body 1 using the underwater controller 5, and after fully contacting the opening with the surface to be painted, energizing the electromagnet 14 to attract it, and supplying air to the seal tube 15, the coating chamber 2 is sealed with a skin 16.

When the ballast chamber atmospheric valve 10 and the painting chamber/ballast chamber connection valve 11 are opened, seawater naturally begins to move from the painting chamber 2 to the ballast chamber 3, and is accelerated by supplying air to the painting chamber 2.

The air pushed out from the ballast chamber 3 is discharged to the sea through the ballast chamber atmosphere valve 10, the atmosphere release collector pipe 17, and the atmosphere hose connected thereto.

In this case, there is no change in the volume of seawater, so there is no change in buoyancy at all.

Next, to explain the painting process, a painting device consisting of four spray nozzles 20 is installed so that it can spray the entire surface by moving half the width of the painting room 2, and airless spray is applied to the surface to be painted after washing and drying. .

Here, in FIG. 2, a hatched portion 21 indicates a spray pattern, and a portion 22 indicates one coating range of the spray nozzle 20.

In addition, water can be easily poured into the painting room 2 by operating in the opposite direction to the drainage.

These series of operations are carried out by an automatic operation device consisting of devices housed in an upper instrument room 18, a lower instrument room 19, and a control panel placed on land.

The main body 1 of the underwater moving body, which can move forward, backward, leftward, and upward with respect to the surface to be painted, is made of lightweight materials such as FRP, foamed urethane, or light metal, and is made of lightweight materials.

The automatic underwater spray coating device of the present invention, configured as described above, is a combination of a lightweight submersible type underwater moving body and an automatic underwater coating device, and is capable of moving back and forth, left and right, and up and down underwater, and can move in three dimensions to a surface to be coated that is located away from the surface to be coated, such as the outer plate of an underwater structure,
In addition, apart from the movements mentioned above, all operations are carried out automatically by an automatic operating device consisting of onboard instruments and a control panel on land.

Furthermore, by equalizing the pressure inside the seal tube with the water pressure at the water depth, the painting chamber is sealed and a good painting job can be performed.

Therefore, the automatic underwater spray painting device of the present invention can automate the painting work underwater, and after painting, the device can be moved away from the surface to be painted and to the next surface to be painted without touching it. This has the advantage that coating efficiency can be increased and a complete coating film can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a side view of an underwater automatic spray coating apparatus according to an embodiment of the present invention, and FIG. 2 is a plan view seen from above of FIG. 1. 1...Main body, 2...Painting room, 3...Ballast room, 5...Undersea control device, 6...Vertical thruster, 7...Side thruster, 8...Ballast room for vertical control, 11...Painting room・Ballast chamber connection valve,
13...Painting room/ballast room connection pit, 14...
...Electromagnet, 15...Seal tube, 20...Spray nozzle.

Claims (1)

[Scope of utility model registration request] It has a thruster device that can move forward and backward and left and right with respect to the surface to be painted underwater, a ballast chamber for vertical control that can move in the vertical direction, and a suction device that can be fixed to the surface to be painted, and, A coating chamber with a built-in coating device is formed in the center of an underwater vehicle made of lightweight material, and a seal tube is provided at the periphery of the coating chamber that comes into contact with the surface to be coated. An underwater automatic spray coating device characterized by being provided with a ballast chamber that enables water to be poured into the coating chamber, and further provided with an automatic operating device for the ballast chamber.