JPH07924A - Device for cutting off depositing marine organism - Google Patents

Abstract

PURPOSE:To release an operator from an unpleasant working environment and underwater operation, to stably improve the operation accuracy, to prevent the damage of the coated surface and steel sheet and further to remarkably reduce the equipment cost and operation cost by using this device for cutting off depositing marine organisms. CONSTITUTION:This device is provided with a mobile plate 6 placed on a fixed base plate 2 furnished in a waterproof casing 1, an electric motor 4 for moving the mobile plate 6, a hollow shaft 7 pivoted turnably on the mobile plate 6 and with the tip projecting to the outside from the casing 1 and a cutting blade 9 provided with a rotating blade 10 fixed to the tip of the shaft 7 and used to cut off the marine organism depositing on a steel sheet and a distance sensor 11, and further furnished with an electric motor 12 for rotating the shaft 7 and a controller 15 for controlling the motors 4 and 12 based on the signal from the sensor 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an adhering marine organism cutting device used for repair, inspection and cleaning of ships and undersea structures.

[0002]

2. Description of the Related Art Conventionally, repair and inspection of ships and undersea structures,
When removing seawater such as shells attached to a steel plate during cleaning, in a ship, a dry jet is used to completely expose the part to be cleaned to the air, a water jet, sand,
It is cleaned manually with an iron spatula, wire brush, etc., and for fixed undersea structures, it is done manually by a diver or by using a similar jig only at low tide, and automatically underwater. No examples have been implemented. Therefore, the conventional method has the following drawbacks. (1) The air cleaning work by humans generates dust and noise and works at a high place, resulting in a 3K working environment. (2) In underwater cleaning, only special workers such as divers can work, resulting in high work efficiency and work cost. (3) When using special jigs manually, work accuracy and efficiency are not constant due to skill level. (4) In the cleaning process, there are many damages to the paint surface or steel plate, and secondary repair work such as secondary painting occurs. (5) The use of docks is indispensable for ships, and it is difficult to determine the optional work process.

[0003]

SUMMARY OF THE INVENTION The present invention has been proposed in view of the above circumstances, and it is possible to free the operator from a bad working environment and underwater work, the work accuracy is stably improved, and the painted surface is improved. It is also an object of the present invention to provide an attached marine organism cutting device capable of preventing damage to a steel plate and further significantly reducing equipment costs and working costs.

[0004]

To this end, the present invention provides a moving plate mounted on a fixed base plate provided in a prevention casing, an electric motor for moving the moving plate, and a moving plate on the moving plate. A hollow shaft that is rotatably mounted and has a tip protruding outward from the casing, and a cutting blade base that is fixed to the tip of the hollow shaft and that is equipped with a rotary blade for cutting marine life attached to steel plates and a distance sensor. And an electric motor that rotates the hollow shaft, and a control device that commands the rotational speeds and rotational directions of the two electric motors based on signals from the distance sensor.

[0005]

In the apparatus for cutting attached marine life of the present invention, the electric motor rotates the hollow shaft, and the rotary blade attached to the tip of the hollow shaft cuts and removes the attached sea life on the steel plate.
The moving plate on which the hollow shaft is mounted is rotated by the electric motor,
The rotary blade moves in the direction of moving forward and backward with respect to the steel plate. The distance sensor constantly detects the distance in the process of the rotary blade approaching the steel plate, and the detection signal is transmitted to the control device via the hollow shaft.

[0006]

1 is a side view of the whole of this device, and FIG.
Fig. 3A shows a cutting stand of the same device, Fig. 1A is a front view, Fig. 1B is a side view, Fig. 3 is an explanatory view of the operation of the device, and Fig. 4 is a view of an underwater mobile ship equipped with the device. It is a perspective view.

In FIG. 1, a fixed base plate 2 is arranged on the inner bottom of a waterproof casing 1, a screw shaft 3 is placed on the fixed base plate 2, and fixed to one end of the screw shaft 3. An electric motor 4 on the base plate 2 is connected via a belt 5, and a moving plate 6 is engaged with the screw shaft 3. A hollow shaft 7 is rotatably mounted on the moving plate 6, and the tip of the hollow shaft 7 projects from the casing 1 to the outside and a watertight seal 8 is attached to the projecting portion. A cutting blade base 9 is fixed to the tip of the hollow shaft 7, a rotary blade 10 for cutting seawater attached to a steel plate and a distance sensor 11 are attached thereto, and a signal cable of the distance sensor 11 is provided in the hollow shaft 7. It is wired. Further, the rotary blade 10 is a three-plate rotary blade 10a, 10 arranged at equal radial intervals as shown in FIG.
b, 10c, and the tip of the distance sensor 11 is lower than the rotary blades 10a-10c so as not to directly contact the attached marine life. An elliptical hole 20 is formed in the mounting flange 19 at the base end of the cutting blade base 9 so that the hollow shaft 7 can be eccentrically mounted.

Returning to FIG. 1 again, a slip ring 14 to which the electric motor 12 on the moving plate 6 is connected to the base end of the hollow shaft 7 via a belt 13 and to which the signal cable of the distance sensor 11 is connected. Is installed. A control device 15 is provided in the casing 1, and the distance sensor 11, the electric motor 12, the electric motor 4 and the signal cable 1 are provided.
The wires are connected at 6, 17, and 18, respectively. Further, the control device 15 has a built-in amplifier for each of the distance sensor 11, the electric motor 12, and the electric motor 4.

In such an apparatus, the electric motor 12 installed on the moving plate 6 rotates the hollow shaft 7 via the belt 13, and the rotary blade 10 attached to the tip of the hollow shaft 7 rotates to attach the steel plate. Cutting away sea life. In the moving plate 6 on which the hollow shaft 7 is mounted, the rotation of the electric motor 4 causes the belt 5 to rotate.
By being transmitted to the screw shaft 3 via the rotary shaft 10, the rotary blade 10 moves in a direction in which the rotary blade 10 moves forward and backward with respect to the cleaning target steel plate in accordance with the rotation speed and direction. The distance sensor 11 attached to the cutting base 9 constantly detects the distance in the process of the rotary blade 10 approaching the target steel plate, and the detection signal is passed through the hollow shaft 7, the slip ring 14 and the signal cable 16. Is transmitted to the control device 15. The distance sensor 11 is an eddy current sensor that has the ability to detect the target steel plate surface in water and by transmitting attached marine life.

When the rotary blade 10 comes closest to the target steel plate, the controller 15 issues a command signal to stop the rotation of the electric motor 4 and the electric motor 12, whereby the rotary blade 10 stops cutting and the moving plate is moved. The movement of 6 also stops. Therefore, the rotary blade 10 does not contact the target steel plate. Next, the control device 15 sends a reverse rotation command signal to the electric motor 4 and moves the moving plate 6 backward to move the rotary blade 10 away from the target steel plate.

A series of these operations will be described with reference to FIG. 3, where a is the rotational speed of the electric motor 12, b is the distance between the rotary blade 10 and the steel plate, c is the rotational direction and rotational speed of the electric motor 4, and d is the movement. The stroke of the plate 6 is shown, and the starting point T
₁ and the steel plate during cleaning advancement between the closest point of approach T _2, in the in retreat between the end point T ₃ and the steel sheet closest point T _2, the operation of the street shown, is performed. By continuously performing this, the marine organisms attached to the target steel plate are cut and cleaned without damaging the steel plate.

This device is mounted on a submersible ship or attached to a structure moving on a steel plate for movement.
A suitable underwater mobile ship is shown in FIG. 4. A turret board 22 for accommodating this device is installed in the upper center of a hull 21, and this turret board 22 has six windows, and each of these devices has a window. Various other devices are stored in the turret board 2
2 Rotate the whole so that different kinds of work can be performed on a certain place. Further, a collision-protection pipe 23 is surrounded around the hull 21, and a magnetic sensor 24 for detecting the target steel plate and a wheel 25 for pressing the hull 21 against the target steel plate are attached to the upper part of the hull 21, and A buoyant body 26 for adjusting buoyancy, a lateral movement thruster 27 for propulsion, a vertical movement thruster 28, and a forward / backward thruster 29 are attached to the lower portion. Further, a camera 30 for monitoring the condition around the hull is provided on the side of the hull 21.
And a light 31 for providing the required illuminance of the camera 30 are attached. However, the present apparatus housed in such an underwater mobile ship can be moved to any place to perform the cutting and removing work of the sea creatures attached to the steel plate.

[0013] Thus, according to this apparatus, since the attached marine organisms can be automatically removed unattended, the operator can be freed from the 3K work environment and underwater work, and the device accuracy can be improved stably. Further, since the distance to the steel plate can be controlled, damage to the painted surface and the steel plate can be prevented. Furthermore, since it can be used both in water and in the air, ancillary equipment such as a dock is not necessary, and labor costs can be significantly reduced by eliminating manpower due to unmanned work and by eliminating the need for continuous work and special workers.

[0014]

In summary, according to the present invention, the movable plate placed on the fixed base plate arranged in the prevention casing, the electric motor for moving the movable plate, and the movable plate rotatable on the movable plate. A hollow shaft having a tip portion protruding outward from the casing while being mounted, a cutting blade base fixed to the tip of the hollow shaft to cut adhering sea life of steel plates, and a distance sensor attached, An electric motor that rotates the hollow shaft,
By having a control device for instructing the rotation speed and the rotation direction of the two electric motors by the signal of the distance sensor, the worker can be freed from a bad work environment and underwater work, and the work accuracy is stably improved, Further, the present invention is extremely useful industrially, since it is possible to obtain an adhering marine organism cutting device which can prevent damage to the painted surface and the steel plate, and can significantly reduce equipment costs and working costs.

[Brief description of drawings]

FIG. 1 is an overall side view of an embodiment of the attached marine organism cutting device of the present invention.

FIG. 2 is a front view showing a cutting blade base of the same device, FIG.
FIG. 3B is a side view.

FIG. 3 is an explanatory diagram of the operation of this device.

FIG. 4 is a perspective view of an underwater vehicle equipped with the present device.

[Explanation of symbols]

 1 casing 2 fixed base plate 3 screw shaft 4 electric motor 5 belt 6 moving plate 7 hollow shaft 8 watertight seal 9 cutting edge stand 10, 10a, 10b, 10c rotary blade 11 distance sensor 12 electric motor 13 belt 14 slip ring 15 controller 16 17, 18 Signal cable 19 Mounting flange 20 Elliptical hole

Claims (1)

[Claims] 1. A moving plate mounted on a fixed base plate disposed in a prevention casing, an electric motor for moving the moving plate, a rotatably mounted on the moving plate, and a tip portion. Is a hollow shaft protruding from the casing to the outside, a cutting blade base fixed to the tip of the hollow shaft for cutting adhered sea life of steel plate and a distance sensor attached, and an electric motor for rotating the hollow shaft. And a controller for instructing the number of rotations and the direction of rotation of the two electric motors according to the signal from the distance sensor.