JPH05213265A - Device for automatically inspecting interior of tank of ship - Google Patents

Abstract

PURPOSE:To improve the moving mechanism of especially an automatic inspecting device, in an automatic inspecting device for the interior of the cargo oil tank of a ship like a large tanker. CONSTITUTION:An elevating table 14 is disposed along a pole 15 delivered from the upper deck 3 of a ship and having a lower end part fixed in a cargo oil tank, formed to a ship, and to the ship bottom 5 of a ship. An arm 18 provided at its tip with an expandable part is horizontally protruded from the elevating table 14. An automatic inspecting device on which an inspecting tool to inspect the interior of the cargo oil tank is mounted is mounted on the arm 18 sidable in the longutudinal direction of the arm 18 and rotatably around the arm 18 serving as a central axis. This constitution performs inspection of the interior of the cargo oil tank without erecting a scaffolding and increases an inspection speed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic inspecting apparatus for a freight tank of a ship such as a large tanker, and more particularly to improvement of a moving mechanism of the automatic inspecting apparatus.

[0002]

2. Description of the Related Art As a water tank and a freight oil tank of a large tanker, there is a conventional tank shown in FIG. 7 (partial perspective view).
Left and right ship side skins 1 reinforced by a plurality of ship side longitudinal ribs 2
A plurality of longitudinal bulkheads, each of which is a hull constructed by being fixed to an upper deck 3 reinforced by a plurality of upper deck vertical ribs 4 and a bottom outer plate 5 reinforced by a plurality of bottom longitudinal ribs 6. A vertical partition wall 7 reinforced by vertical ribs 8 and a plurality of horizontal bulkheads 9 are vertically and horizontally partitioned to form a ship side water tank 10 and a central currency oil tank 11.

Conventionally, the inspection of the hull structure, welds, etc. in each of these tanks has been carried out by visual inspection by an inspector from the scaffolding on which scaffolding is installed.

[0004]

However, such inspection has the following problems. (1) Since a scaffold is built in a huge oil tank, a large number of skilled workers and a long construction period are required, resulting in enormous cost. (2) Scaffolding work, visual inspection work, etc. are all performed at high places, and it is extremely dangerous because of the poor environment. (3) The inspection is generally visual, and the results vary depending on the inspector, so the reliability is not sufficient.

The present invention is intended to solve such a problem, and an automatic inspection device is attached to an elevating table which can be moved up and down by using a pole sent from the upper deck of a ship as a guide member. By performing the inspection, it is possible to record the inspection status without the need for a scaffold in the tank, work at high places, and to increase the moving speed of the automatic inspection device. It is an object of the present invention to provide an automatic inspection device for a cargo oil tank of a ship, which is excellent in reliability and reliability and has an improved inspection speed.

[0006]

In order to achieve the above-mentioned object, an automatic in-tank inspecting apparatus for a ship according to the present invention is arranged so that the lower end of the in-tank automatic inspection device is sent from the upper deck of the ship inside the tank formed in the ship. A pole fixed to the bottom of the ship, a lift table arranged to be able to move up and down along the pole, an arm protruding horizontally in the lift table and having a telescopic portion at the tip, and the inside of the tank And an automatic inspection device attached with an inspection tool for inspecting, wherein the automatic inspection device is attached to the arm so as to slide in the longitudinal direction of the arm and rotatable about the arm as a central axis. It has a feature.

[0007]

In the above-described automatic in-vessel inspection device for a ship according to the present invention,
Since the elevator can move up and down by using the pole as a guide, it is possible to increase the lifting speed of the elevator.

Further, since the automatic inspection device is slidably and rotatably mounted on the arm protruding horizontally from the elevating table, the automatic inspection device can be simplified by combining the slide operation and the rotation operation. And it can be quickly moved to a predetermined position.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An automatic vessel inspecting apparatus for a ship according to an embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic perspective view of essential parts, and FIG.
3 is a perspective view showing an operating state, FIG. 4 is a schematic perspective view of an arm, FIG. 5 is a side sectional view of an automatic inspection device, and FIG. 6 is A- of FIG.
FIG.

The automatic in-tank inspection device for a ship according to this embodiment is
The central freight oil tank 11 having the structure shown in FIG. 7 is to be inspected, and the pole delivery device 13 is installed on the upper deck 3, and the pole 15 delivered from the pole delivery device 13 through the manhole 3a is The lower end is fixed to the ship bottom vertical ribs 6 in the central oil tank 11 by the fixing jig 6a.

An elevating table 14 is mounted on a pole 15 so that it can be moved up and down.

[0012] In order to raise and lower the elevator platform 14 at a rapid speed in an emergency or the like, an elevator drive motor 12 and a hanging wire 12a controlled remotely from a control room 22 on the upper deck 3.
Is provided.

Further, a pair of arms 18 are horizontally provided on the lifting table 14 so as to project therefrom. A rod 24 with an electromagnet 19 is attached to each tip of each arm 18 by a spring 23 so as to be urged outward. When each arm 18 is extended, each tip is attached to the side plate 1 of the ship side or the longitudinal partition wall 7 It is configured to be fixed by the magnetic force of the electromagnet 19.

The tip of a wire 25 disposed inside the arm 18 is bonded to the rod 24. The wire 25 is wound around a winch 26 installed inside the lift base 14, and the winch 26 is operated when the lift base 14 is lifted to operate the rod 24.
It is designed to be retracted to prevent it from being caught in the rib material.

An automatic inspection device 17 is provided for each arm 18.
However, it is mounted by remote control so that it can rotate about each arm 18 in a fixed state and move along each arm 18.

A manipulator 20 is attached to the automatic inspection device 17, and an inspection tool for inspecting the inside of the oil tank such as a television camera 21 and a nondestructive inspection device is attached to the tip of the manipulator 20.

The automatic inspection device 17 has a gear 17b with a motor in a case 17a, and the gear 17b meshes with a rack 18a provided in the longitudinal direction of the arm 18. Reference numeral 17c is case 17a
Shows an idler roller for stabilizing the arm against the arm 18.

A hollow metal piece 17d having a hollow portion along the outer peripheral portion of the arm 18 is integrally provided in front of the case 17a (away from the lift table 14), and the front end portion of the hollow metal piece 17d meshes with the rack 18a. A gear 17e is attached.

Ball bearing 1 on the outer periphery of the hollow metal piece 17d
A bracket 20a is rotatably fitted through 7f, a motor 17g is attached to this bracket 20a, and a bevel gear 17h on the rotating shaft of the motor 17g is fixed to the front side surface of the case 17a by an internal gear 17j. It is designed to mesh with.
Reference numeral 17k indicates a rotary casing. Further, the manipulator 20 has its base attached to the bracket 20a.

As shown in FIG. 2, a crimping type self-propelled sliding roller 16 for sandwiching the pole 15 from the four circumferences is mounted inside the elevating table 14, and the sliding roller 16
The elevator 14 can be moved up and down along the pole 15 by rotating the shaft 16. Reference numeral 27 indicates a power supply / communication cable, and reference numeral 28 indicates a control signal transmission cable.

In order to move the automatic inspection device 17 up and down in the above-mentioned structure, first, it is sent out from the pole sending device 13 installed on the upper deck 3, and the space between the ship bottom longitudinal ribs 6 and the upper deck 3 in the tank. Mount the lift 14 to the pole 15 that is set up in the vertical direction.

Crimping type sliding rollers 16 inside the lift base 14 pinch the pole 15 from four directions and rotate by itself to lift and lower the lift base 14 to a predetermined position by remote control and stop it. Then, the winch 26 is rewound to project the rod 24 at the tip of the arm 18 attached to the left and right of the lifting table 14, and the tip of the rod 18 is fixed to the longitudinal partition 7 by the electromagnet 19.

The inside of the oil tank is inspected by an inspection tool such as a television camera 21 while rotating or sliding the automatic inspection device 17 about the fixed arm 18 as an axis. In this case, a signal from the inspection tool is transmitted to the control room 22 via the cable 27, where the judgment is made by a plurality of inspectors and the data is recorded.

That is, the slide of the automatic inspection device 17 (movement of the arm 18 in the longitudinal direction) is carried out by rotating the gear 17b.
This is done by moving the case 17a along the line 18a.

In addition, the rotation of the automatic inspection device 17 about the arm 18 as an axis is performed by a motor 17g that rotates the bevel gear 17h to the internal gear 17j.
By engaging with and rotating with the motor 17g,
Done.

Then, the TV camera 21 is moved to a desired position by the above-mentioned slide or rotation of the automatic inspection device 17, and the TV camera 21 can perform the inspection.

In this case, the movement of the TV camera 21 or the like to a desired position is performed by moving up and down along the pole 15 of the lifting table 14.
Since rotation and slide around the arm 18 of the automatic inspection device 17 can be performed in combination, and the above-mentioned operations can be simultaneously performed by a combined operation, the inspection tool such as a television camera can be moved quickly. It can be performed and the inspection time can be shortened.

In the case of sudden drop measures and large movements (eg, raising and lowering of the upper deck from the bottom of the ship), the lifting drive motor 12 on the upper deck 3 is used to wind up the hanging wire 12a and lift the platform. Make 14 rapid withdrawals.

As described above, the vessel in-tank automatic inspection apparatus of this embodiment has the following actions and effects. (1) Inspection at high places can be omitted and sufficient safety can be obtained. (2) The inspection data can be recorded and judged by a plurality of inspectors, and can be viewed repeatedly, which improves the reliability of the inspection result and can be reflected in the analysis work and the like. (3) The inspection cost can be halved compared to the conventional scaffold construction. (4) The inspection period can be shortened by speeding up the inspection speed.

[0030]

As described in detail above, according to the in-vessel automatic inspection device for a ship of the present invention, the following effects and advantages can be obtained. (1) Inspection at high places can be omitted and sufficient safety can be obtained. (2) The inspection cost can be halved compared with the conventional scaffold construction. (3) The inspection period can be shortened by increasing the inspection speed.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of a main part of an in-tank automatic inspection device for a ship according to an embodiment of the present invention.

FIG. 2 is a schematic plan sectional view of the inside of the elevator.

FIG. 3 is a perspective view showing the same operating state.

FIG. 4 is a schematic perspective view of the arm.

FIG. 5 is a side sectional view of the automatic inspection device.

FIG. 6 is a view on arrow AA of FIG.

FIG. 7 is a partial perspective view showing a conventional large tanker water tank and coin oil tank.

[Explanation of symbols]

 1 Ship side outer plate 3 Upper deck 5 Bottom bottom plate 7 Longitudinal bulkhead 10 Ship side water tank 11 Central currency oil tank 12 Lifting drive motor 12a Lifting wire 13 Pole feeding device 14 Lifting table 15 Pole 16 Self-propelled sliding roller 17 Automatic inspection device 18 Arm 19 Electromagnet 20 Manipulator 21 TV camera 24 Rod 25 Wire 26 Winch

Claims (1)

[Claims] 1. A pole which is fed from the upper deck of a ship and whose lower end is fixed to the bottom of the ship inside a tank formed in the ship, and an elevating platform arranged so as to be able to move up and down along the pole. And an arm that has a telescopic portion at the tip and is provided so as to project in the horizontal direction on the elevator, and an automatic inspection device equipped with an inspection tool for inspecting the inside of the tank. An automatic in-vessel in-vessel inspection device, which is attached to the arm so as to slide in the longitudinal direction of the arm and rotatable about the arm as a central axis.