JP2011213316A - Maintenance support system of hull - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a maintenance support system of a hull with which a hull can be observed or repaired from various positions on the lower side of the hull during navigation and a maintenance support method of a hull.SOLUTION: The maintenance support system of a hull includes a towing apparatus 40 with an observing device, a cable 33 wound up and delivered by a winch 23 provided to a port 13 of the hull 10, and a cable 34 wound up and delivered by a winch 24 provided to a starboard 14 of the hull 10. The towing apparatus 40 is towed in water from the hull 10 via the cable 33 and the cable 34.

Description

  The present invention relates to a hull maintenance support system and a hull maintenance support method.

  Conventionally, observation of the state of corrosion and damage of a portion submerged in the seawater of a ship such as a ship bottom, a rudder and a propeller has been performed by an underwater vehicle equipped with a diver and a camera.

  The underwater observation device disclosed in Patent Document 1 is capable of rotating in a vertical plane via a support base installed on a quay or a ship deck, a member protruding from the support base onto the water surface, and a member via a hinge. An attached guide tube, a support tube inserted into the guide tube so as to be movable in the axial direction, an observation device supported by the support tube, and an operating rod attached to the support base so as to be movable in the axial direction; And an operating rod moving means. The tip of the operating rod is attached to the guide tube via another hinge.

JP 2000-358175 A

  An object of the present invention is to provide a hull maintenance support system and a hull maintenance support method capable of observing or repairing the hull from various positions below the navigating hull.

  The means for solving the problem will be described below using the numbers used in the (DETAILED DESCRIPTION). These numbers are added to clarify the correspondence between the description of (Claims) and (Mode for Carrying Out the Invention). However, these numbers should not be used to interpret the technical scope of the invention described in (Claims).

  A hull maintenance support system according to the present invention includes a tow device (40), a first cable (33) wound and fed by a first winch (23) provided on a port (13) of the hull (10), A second cable (34) wound and fed by a second winch (24) provided on the starboard (14) of the hull. The tower is towed underwater from the hull through the first cable and the second cable.

  The tower includes an observation device (50).

  The observation apparatus includes a camera (51).

  The observation apparatus includes an acoustic sensor (53) or a hydrophone (54).

  The first cable or the second cable includes a signal line (35). The towing device includes a water depth control device (60) for controlling the water depth of the towing device so as to coincide with the water depth indicated by a signal sent from the hull via the signal line.

  A hull maintenance support method according to the present invention includes a step of towing a tower (40) from a hull (10) via a first cable (33) and a second cable (34), and the tower is located below the hull. And changing the position of the towing device in the left-right direction or the front-rear direction position. The left-right direction position is a position along the left-right direction (Y) of the hull. The front-rear direction position is a position along the front-rear direction (X) of the hull. The step of changing the left-right position or the front-rear direction position of the towing device includes the step of winding or feeding the first cable from the port side (13) of the hull, or the step from the starboard (14) of the hull. Including the step of winding or unwinding two cables.

  The hull maintenance support method further includes a step of observing the hull by an observation device (50) provided in the tower.

  The step of observing the hull includes a step of photographing the hull.

  In the step of photographing the hull, air bubbles blown out from the hull into the water are photographed.

  The step of observing the hull includes a step of measuring sound from the hull.

  The hull maintenance support method further includes the step of controlling the water depth of the tow to a desired water depth in a state where the tow is positioned below the hull.

  According to the present invention, there are provided a hull maintenance support system and a hull maintenance support method capable of observing or repairing the hull from various positions below the navigating hull.

FIG. 1 is a top view of a towing device according to a first embodiment of the present invention. FIG. 2 is a side view of the towing device according to the first embodiment. FIG. 3 is a functional block diagram of the towing device according to the first embodiment. FIG. 4 is a functional block diagram of an observation apparatus provided in the tow device according to the first embodiment. FIG. 5 is a functional block diagram of a water depth control device provided in the towing device according to the first embodiment. FIG. 6 is a functional block diagram of the power supply device provided in the towing device according to the first embodiment. FIG. 7 is a top view of a hull including the maintenance support system according to the first embodiment. FIG. 8 is a side view of a hull including the maintenance support system according to the first embodiment. FIG. 9 is a cross-sectional view of the cable of the maintenance support system according to the first embodiment. FIG. 10 is a functional block diagram of the observation device provided in the tow device according to the second embodiment. FIG. 11 is a functional block diagram of the observation device provided in the tow device according to the third embodiment. FIG. 12 is a functional block diagram of a water depth control device provided in the towing device according to the fourth embodiment. FIG. 13: is a functional block diagram of the power supply device with which the towing device concerning 5th Embodiment is provided.

  DESCRIPTION OF EMBODIMENTS Embodiments for carrying out a hull maintenance support system and a hull maintenance method according to the present invention will be described below with reference to the accompanying drawings.

(First embodiment)
With reference to FIG. 1, a tow device 40 according to the first embodiment of the present invention includes a case 41, a cable attachment portion 43, a camera 51, a lighting device 52, and a control surface 64. The cable attachment portion 43 can swing around the rotation axis S with respect to the case 41. The camera 51 and the illumination device 52 are provided on the upper surface 41 a of the case 41. The cable attachment portion 43 and the control surface 64 are provided outside the case 41.

  FIG. 2 is a side view of the towing device 40.

  With reference to FIG. 3, the tower 40 includes an observation device 50, a water depth control device 60, and a power supply device 70.

  With reference to FIG. 4, the observation device 50 includes a camera 51 and an illumination device 52. The camera 51 and the lighting device 52 are provided in the case 41.

  Referring to FIG. 5, the water depth control device 60 includes a control device 61, a water depth sensor 62, a drive device 63, and a control surface 64. The water depth sensor 62 detects the water depth of the towing device 40. The drive device 63 drives the control surface 64. The control device 61 controls the driving device 63 based on the water depth detected by the water depth sensor 62. The control device 61 is provided in the case 41.

  Referring to FIG. 6, the power supply device 70 includes a battery 71 that supplies power to the observation device 50 and the water depth control device 60. The battery 71 is provided in the case 41.

  With reference to FIG. 7, the maintenance support system according to the first embodiment of the present invention is provided in the hull 10. The maintenance support system includes a winch 23 provided on the port 13 of the hull 10, a winch 24 provided on the starboard 14 of the hull 10, a towing device 40, and a cable 33 attached to the cable attachment portion 43 of the towing device 40. And 34. The winches 23 and 24 are provided in the bow portion 11 of the hull 10. The winches 23 and 24 are provided in a portion of the hull 10 that is not submerged (portion above the water line) such as a deck. The winches 23 and 24 may be general-purpose winches already installed in the hull 10 or may be dedicated winches. The winch 23 winds and unwinds the cable 33. The winch 24 winds and unwinds the cable 34.

  Referring to FIG. 8, the tower 40 is towed underwater from the navigating hull 10 via cables 33 and 34 while being located below the bottom 12 of the hull 10.

  Referring to FIG. 9, at least one of cables 33 and 34 includes a signal line 35 and a wire 36 disposed around signal line 35. For example, an armored cable for suspending an ocean observation device is used as the cable 33 or 34.

  Hereinafter, a maintenance support method according to the present embodiment will be described. The tower 40 is towed from the navigating hull 10 via the cables 33 and 34. Then, the winch 23 winds or unwinds the cable 33 with the tow 40 positioned below the hull 10, or the winch 24 winds or unwinds the cable 34, so that the left-right direction of the tow 40 The position or the front-rear direction position is changed. Here, the left-right direction position is a position along the left-right direction Y of the hull 10, and the front-rear direction position is a position along the front-rear direction X of the hull 10. The observation device 50 observes the hull 10 from various positions. More specifically, the camera 51 images various parts of the ship bottom 12. Since an image signal from the camera 51 is sent to the hull 10 via the signal line 35, an operator who has boarded the hull 10 can see an image taken by the camera 51 in real time. The operator can observe the damaged part of the ship bottom 12 through the image taken by the camera 51.

  According to the maintenance support device and the maintenance support method according to the present embodiment, it is possible to observe the hull 10 from various positions below the hull 10 during navigation. In addition, since the hull 10 towing the tower 40 is an object to be observed, it is possible to observe the hull 10 without the assistance of other ships.

  In addition, when bubbles are blown from the hull 10 into the water in order to reduce the frictional resistance of the hull 10, the camera 51 can acquire information on the bubble distribution covering the ship bottom 12 by photographing the bubbles. Information on the bubble distribution can be used for designing the bubble outlet.

  Furthermore, in the maintenance support method according to the present embodiment, the water depth control device 60 controls the water depth of the tower 40 to a desired water depth with the tower 40 positioned below the hull 10. More specifically, the control device 61 automatically controls the drive device 63 so that the water depth indicated by the signal sent from the hull 10 via the signal line 35 matches the water depth detected by the water depth sensor 62.

  Thereby, it is possible to control the distance between the tow 40 and the bottom 12 to a distance suitable for observation while preventing the tow 40 from coming into contact with the bottom 12.

  Note that the control device 61 may automatically control the drive device 63 so that the water depth preset in the control device 61 matches the water depth detected by the water depth sensor 62.

  When the winches 23 and 24 are provided on the bow portion 11 as described above, the entire bottom 12 can be observed. If the winches 23 and 24 are provided in the center portion of the hull 10, only the stern side half of the bottom 12 can be observed, but the winches 23 and 34 of the cables 33 and 34 when observing the stern side half of the bottom 12 are observed. Since the length of the part extended from 24 is short, adjustment of the left-right direction position and the front-back direction position of the towing device 40 becomes easy.

(Second Embodiment)
Referring to FIG. 10, the observation device 50 of the tower 40 according to the second embodiment of the present invention further includes an acoustic sensor 53. Therefore, sound leakage from the hull 10 can be measured. The measurement result of the acoustic sensor 53 is sent to the hull 10 through the signal line 35.

(Third embodiment)
Referring to FIG. 11, the observation device 50 of the tower 40 according to the third embodiment of the present invention further includes a hydrophone 54. According to this embodiment, radiation noise (ultrasonic waves) from the hull 10 can be measured.

(Fourth embodiment)
Referring to FIG. 12, the water depth control device 60 of the tower 40 according to the fourth embodiment of the present invention includes a water drainage device 65 and a tank 66 instead of the drive device 63 and the control surface 64. The pouring / draining device 65 pours / drains into the tank 66. The control device 61 automatically controls the water pouring / draining device 65 so that the water depth indicated by the signal sent from the hull 10 via the signal line 35 or a preset water depth matches the water depth detected by the water depth sensor 62.

(Fifth embodiment)
Referring to FIG. 13, the tower 40 according to the fifth embodiment of the present invention further includes a generator 72 and an impeller 73. The generator 72 is disposed in the case 41, and the impeller 73 is disposed outside the case. The impeller 73 receives the water flow and rotates, and the generator 72 generates power based on the rotation of the impeller 73. The observation device 50 and the water depth control device 60 are operated by the electric power generated by the generator 72, or the battery 71 is charged. According to the towing device 40 according to the present embodiment, long-time observation is possible.

  Various modifications can be made to the above embodiment. For example, the tower 40 may include a repair device (not shown) that repairs the hull 10 instead of or in addition to the observation device 50. In this case, the repair device can repair the hull 12 in a state where the tower 40 is positioned below the hull 10. Moreover, you may combine the said embodiment.

DESCRIPTION OF SYMBOLS 10 ... Hull 11 ... Bow part 12 ... Ship bottom 13 ... Port 14 ... Starboard 23, 24 ... Winch 33, 34 ... Cable 35 ... Signal wire 36 ... Towing device 41 ... Case 41a ... Upper surface 43 ... Cable attaching part 50 ... Observation device 51 ... Camera 52 ... Illumination device 53 ... Acoustic sensor 54 ... Hydrophone 60 ... Water depth control device 61 ... Control device 62 ... Water depth sensor 63 ... Drive device 64 ... Control surface 65 ... Pouring / draining device 66 ... Tank 70 ... Power supply device 71 ... Battery 72 ... Generator 73 ... Impeller S ... Rotating axis X ... Front-back direction Y ... Left-right direction

Claims (11)

A tow,
A first cable wound up and fed out by a first winch provided on the port side of the hull;
A second cable wound up and fed out by a second winch provided on the starboard of the hull,
The hull maintenance support system is towed underwater from the hull through the first cable and the second cable. The hull maintenance support system according to claim 1, wherein the tow includes an observation device. The hull maintenance support system according to claim 2, wherein the observation device includes a camera. The hull maintenance support system according to claim 2 or 3, wherein the observation device includes an acoustic sensor or a hydrophone. The first cable or the second cable includes a signal line,
The hull according to any one of claims 1 to 4, wherein the tower includes a water depth control device that controls a water depth of the tow to match a water depth indicated by a signal sent from the hull via the signal line. Maintenance support system. Towing a tow from a hull via a first cable and a second cable;
Changing the horizontal position or the front-rear direction position of the towing device in a state where the towing device is positioned below the hull,
The left-right direction position is a position along the left-right direction of the hull,
The front-rear direction position is a position along the front-rear direction of the hull,
The step of changing the left-right direction position or the front-rear direction position of the towing device is a step of winding or unwinding the first cable from the port side of the hull, or hoisting or unwinding the second cable from the starboard of the hull. Hull maintenance support method including steps. The hull maintenance support method according to claim 6, further comprising a step of observing the hull by an observation device included in the tower. The hull maintenance support method according to claim 7, wherein the step of observing the hull includes a step of photographing the hull. The hull maintenance support method according to claim 8, wherein in the step of photographing the hull, air bubbles blown into the water from the hull are photographed. The method for supporting maintenance of a hull according to any one of claims 7 to 9, wherein the step of observing the hull includes a step of measuring sound from the hull. The hull maintenance support method according to any one of claims 6 to 10, further comprising a step of controlling a water depth of the tow device to a desired water depth in a state where the tower is positioned below the hull.

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