JP2006021724A - Inspecting device for hold side wall structural member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inspecting device for hold side wall structural members capable of easily and surely inspecting the structural members and easy to be carried and housed to make it easy to come close to a high part of the hold side wall of a bulk carrier. <P>SOLUTION: The inspecting device for hold side wall structural members is provided with a plurality of pipes 5 provided to pass through an upper ballast tank 22 from the upper deck 21 into the hold 23, a plurality of portable winches 3 provided on the upper deck, a rail 2 horizontally suspended by the winches 3 in front of the hold side wall structural member (a hold frame 24) through the pipes 5, a gondola suspending moving body 14 to be moved along the rail 2, and a gondola 1 suspended by the rail 2 through the gondola suspending moving body 14. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an inspection device for a cargo side wall structural member of a bulk cargo ship.

  Since the structural member, ie, the hold frame, of the side wall of the bulk carrier (hereinafter referred to as a bulk carrier) is exposed in the hold, it is inevitable that corrosion wear of the fillet weld will occur. As a result, the frame strength and the welding strength are reduced, and an accident such as sinking occurs.

Conventionally, fixed scaffolds and ladders have been used to inspect the hold frame. However, fixed scaffolds and ladders have not only a facility problem that requires installation at each inspection location. In addition, bulk cargo (iron ore, coal, grains) remains in the gaps between the scaffolds and ladders and the side walls of the cargo hold, and the scaffolds and ladders themselves become obstacles, which hinders cargo handling operations. There is a problem of becoming.
On the other hand, in order to solve such problems, the vertical gondola provided on the inner surface or inner wall of the ship side skin is provided in the bow and tail direction, and the work gondola for inspection is suspended and moved. A traveling lifting device has been proposed (see, for example, Patent Document 1).

JP-A-7-144688

However, the inspection apparatus as disclosed in Patent Document 1 has a problem that it can be applied only to a longitudinal-frame-type hull structure, and cannot be applied to a hold-frame-type (rib-frame) hull structure.
On the other hand, in view of the bulk carrier sinking accident, etc., there was a proposal to make the ship side a double structure regarding the safety of the bulk carrier, but no agreement was reached, and in the resolution of the International Maritime Organization (IMO) in May this year, The use of portable ladders as an inspection means for structural members on the side walls of the hold was approved.

  The present invention was devised in accordance with the above-mentioned resolution of the IMO, is easy to carry and store, can easily approach the height of the bulk carrier's hold side wall, and easily and reliably inspect structural members. It is an object of the present invention to provide an inspection device for a ship side wall structure member that can be used.

  In order to solve the above-described problems, the inspection apparatus for a ship side wall structure member according to the present invention can be installed on a plurality of pipes provided so as to penetrate the upper ballast tank from the upper deck into the hold and on the upper deck. A plurality of portable winches, a rail that is horizontally suspended by the winch through the pipe and in front of the hold side wall structural member, a gondola suspension moving body that moves along the rail, and the gondola suspension And a gondola suspended on the rail via a moving body.

  The plurality of pipes have a lid for preventing flooding at the upper end, and are arranged in a line on the port and starboard in accordance with the shape of the side wall of the hold.

  The rail is made of a lightweight material, and has a disassembly and assembly configuration that can be disassembled and assembled to an appropriate length.

  The rail is supported by a rail suspension bracket and is wire-mounted on the winch.

  In addition, the gondola is made of a lightweight material and has a disassembly and assembly type structure that can be disassembled and assembled.

  Since the inspection apparatus for a cargo side wall structure member according to the present invention is configured as described above, a wire is passed through a pipe by a portable winch installed on the upper deck, and the rail is horizontally placed in front of the ship side wall structure member. Can be raised and lowered step by step. And by suspending the gondola on the rail through the gondola suspension moving body, the inspector or operator moves the gondola suspension moving body sideways while riding on the gondola, so that the structure at the height position It is possible to check the degree and situation of corrosion and wear of members. Therefore, by raising and lowering the gondola in stages, it is possible to easily and reliably inspect all the structural members on one side wall of the hold. In addition, winches and rails are stored in a suitable storage location outside the hold when not in use, so that they do not interfere with cargo handling work or work on the deck.

  Hereinafter, an example of an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a schematic view of an inspection apparatus for a cargo side wall structure member showing this embodiment, and is shown together with a sectional view of a bulk carrier. 2 and 3 are a front view and a side view showing the inspection device in an easily understandable manner. 4A and 4B are attachment structural views of the rail and the rail suspension bracket, where FIG. 4A is a side view and FIG. 4B is a front view. 5A is a side view, FIG. 5B is a plan view, FIG. 6 is a rail connection structure showing another example, FIG. 5A is a front view, and FIG. It is a cross-sectional side view.

  Briefly speaking, the inspection device for a ship side wall structure member according to the present invention is suspended by a portable winch 3 in which a gondola 1 on which a person rides is placed on an upper deck 21 of a bulk carrier 20 via a rail (monorail) 2. It will be. The wire 4 of the winch 3 is lowered into the lower hold 23 through the pipe 5 provided vertically so as to penetrate the upper ballast tank 22 from the upper deck 21. A plurality of pipes 5 are provided in a row on the port and starboard as viewed from above. That is, they are arranged in the vicinity thereof in accordance with the shape of the ship side wall. Therefore, in the case of the hold 23 before and after the hull, a plurality of pipes 5 are provided in accordance with the curve of the hold side wall. A lid 6 is provided at the upper end of each pipe 5 to prevent inundation. When not in use, the lid 6 is closed to prevent water from entering the hold 23.

  A portable winch 3 is installed on the upper deck 21. For example, the winch 3 is mounted on the portable davit 7 and is carried out of the storage place and installed in the vicinity of the pipe 5 only when checking the side wall structure member, that is, the hold frame 24. The winch 3 is installed for each pipe 5 on one side of the port or starboard.

  The hold frame 24 is generally composed of a member such as a T-shaped steel, and the web is fixed to the inner surface of the ship-side outer plate 25 by fillet welding at a predetermined interval in the bow-stern direction. Since the fillet welded portion of the hold frame 24 is subject to corrosion and wear after many years, the degree and state of the corrosion wear (thinning, deformation, generation of rust, etc.) are checked, and the fillet welded portion of the fillet welded portion is checked. Depending on the degree of corrosion and the like, the hold frame 24 is reinforced, repaired or repaired.

  The rail 2 is made of a lightweight material such as aluminum or FRP having an H-shaped cross section, for example, and has a disassembled and assembled structure that can be disassembled and assembled to an appropriate length so that it can be easily stored and taken in and out. . As shown in FIGS. 2 to 4, the rail 2 is supported by a plurality of rail suspension brackets 8 formed in a hook shape. For joining the rail 2 and the rail suspension bracket 8, for example, the mounting portion 9 of the bracket 8 is inserted into the lower part of the web of the rail 2, and the mounting portion 9 and the flange of the rail 2 are fixed with bolts and nuts 10. Are joined together.

  The connection of the rail 2 is as shown in FIG. 5, for example. That is, the flanges on both sides of the rail 2 are connected by the connection plate 11 and the bolts and nuts 10. Alternatively, as shown in FIG. 6, the rails 2 can be connected to each other by placing the connecting plate 12 having a groove-shaped cross section in the lower portion of the web of the rail 2 and fixing those flange portions with bolts and nuts 10. The assembled (connected) rail 2 is suspended horizontally on the front surface of the hold frame 24 by the wire 4 of the winch 3 through the rail suspension bracket 8.

  A gondola suspension moving body 14 having a plurality of wheels 13 is suspended on the connected rails 2. The wheels 15 of the gondola suspension moving body 14 are engaged so as to move on the upper surface of the web of the rail 2. A gondola 1 on which a person rides on the gondola suspension moving body 14 is suspended by a wire 15. The gondola suspension moving body 14 moves on the rail 2 manually or by an electric motor or air motor. In the example shown in FIGS. 2 and 3, the wheel 13 is driven by the electric motor 16.

  The gondola 1 includes a handrail 17 for safety, and can be moved (laterally moved) along the rail 2 by the gondola suspension moving body 14 while facing the hold frame 24. Further, the gondola 1 and the handrail 17 are disassembled and assembled to be easily disassembled and assembled so that they can be easily stored and taken in and out, and are made of a lightweight material such as aluminum or FRP.

  The inspection device of this embodiment is configured as described above. Therefore, when inspecting the hold frame 24 that is a structural member on the port side, for example, on the side wall of the hold, first, after unloading the bulk cargo of the hold 23 to be inspected, the winch 3 and the portable davit 7 are taken out from the storage location and the upper deck is taken up. 21 is installed in the vicinity of the pipe 5 on the port side. On the other hand, the disassembled and stored rail portion and gondola portion, other rail suspension bracket 8 and gondola suspension moving body 14 and the like are taken out of the storage location, and are carried into the hold 23 to be inspected from the opening 26. First, the rail 2 and the gondola 1 are assembled. As described above, the rail suspension bracket 8 is attached to the assembled rail 2 at a predetermined interval.

  Next, the wire 3 of each winch 3 is lowered through the pipe 5 to the bottom of the hold 23, the wire hanging is performed on the rail hanging bracket 8, and the rail 2 is gently lifted by the rail hanging bracket 8. And keep it level. Thereafter, the wheel 13 of the gondola suspension moving body 14 is engaged and suspended on the rail 2, and the gondola 1 is hung on the gondola suspension moving body 14 with a wire 15. An inspector or an operator gets on the gondola 1 and gently lifts the gondola 1 by a plurality of winches 3 and hangs it horizontally. As a result, the gondola 1 is suspended horizontally while facing the hold frame 24 by the winch 3 on the upper deck 21. The gondola 1 is stopped at the uppermost or lowermost position, etc., and the inspector or the like moves the gondola suspension moving body 14 along the rail 2 manually or by the electric motor 16 or the like while riding on the gondola 1. While checking the welded portion of the hold frame 24 at the height position.

  Next, the gondola 1 is moved up and down or stopped upward, and the welded portion of the hold frame 24 at the height position is similarly inspected. In this way, the gondola 1 is repeatedly moved up and down in stages, and each holding frame on the port side of the hold 23 is inspected by moving the gondola suspension moving body 14 along the rail 2 each time. 24 can be inspected.

As described above, after the inspection of the hold frame 24 on the port side of the hold 23 is completed, the wire hooks of the gondola 1 and the rail 2 are removed, the winch 3 and the portable davit 6 are moved to the starboard side, and the starboard side as in the above. Check the hold frame 24.
Then, the hold frames 24 are inspected for each hold 23 in turn, or in some cases, for a plurality of hold 23 simultaneously. After the inspection is completed, the gondola 1 and the rails 2 are disassembled in the reverse procedure to the above and taken out of the hold and stored in the original storage location. Similarly, the winch 3 and the portable davit 6 are stored in the original storage location.

As described above, according to this inspection apparatus, it is possible to safely access the height of the side wall of the cargo hold, and it is possible to easily and surely perform the inspection and reinforcement work of the hold frame 24. In addition, work such as inspection can be carried out at any time, not only while the bulk carrier is in the dock, but also when it is anchored or sailing if the hold is empty. Further, the present invention can be applied regardless of whether the hull structure is a rib type or a vertical type.
Furthermore, the gondola 1 and the rail 2 are easy to carry because they are disassembled and assembled from lightweight materials such as aluminum and FRP, and can be stored in a storage place outside the hold when not in use. There is no fixed equipment such as a ladder or the like in the structural member on the side wall of the hold. Therefore, there is no bulk cargo remaining in the gap between these fixed facilities as in the prior art, and there is no hindrance to the cargo handling operation.

  In addition, the gondola suspension moving body 14 is provided with a guide wheel, a safety rope, and the like that are rotated by holding the flange side surface of the rail 2 in order to prevent the wheel from being removed.

The schematic diagram of the inspection apparatus of the cargo side wall structure member by embodiment of this invention. The enlarged front view of the inspection apparatus of FIG. The enlarged side view of the inspection apparatus of FIG. It is an attachment structure figure of a rail and a bracket for rail suspension, (a) is a side view, (b) is a front view. It is a connection structure figure of a rail, (a) is a side view, (b) is a top view. It is the connection structure figure of the rail which shows another example, (a) is a front view, (b) is a cross-sectional side view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Gondola 2 Rail 3 Winch 4 Wire 5 Pipe 6 Lid 7 Portable davit 8 Rail suspension bracket 9 Mounting part 10 Bolt and nut 11 Connection plate 12 Connection plate 13 Wheel 14 Gondola suspension moving body 15 Wire 16 Electric motor 17 Handrail 20 Bulk carrier 21 Upper deck 22 Upper ballast tank 23 Ship hold 24 Hold frame 25 Ship side skin 26 Opening

Claims (5)

  A plurality of pipes provided so as to penetrate the upper ballast tank from the upper deck into the hold, a plurality of portable winches installed on the upper deck, and the side wall structure member of the hold through the pipe by the winch. A rail that is horizontally suspended at the front surface, a gondola suspension moving body that moves along the rail, and a gondola that is suspended from the rail via the gondola suspension moving body. The inspection device for the side wall structure member.   2. The inspection of a cargo side wall structure member according to claim 1, wherein the plurality of pipes have lids for preventing inundation at an upper end, and are arranged in a line on a port side and a starboard side in accordance with the shape of the side wall of the cargo hold. apparatus.   2. The inspection apparatus for a hull side wall structure member according to claim 1, wherein the rail is made of a lightweight material and has a disassembly and assembly type structure that is disassembled and assembled to an appropriate length.   The said rail is supported by the bracket for rail suspension, and is wired by the said winch, The inspection apparatus of the ship side wall structure member of Claim 3 characterized by the above-mentioned. 2. The inspection apparatus for a hull side wall structure member according to claim 1, wherein the gondola is made of a lightweight material and has a disassembly and assembly type structure that is disassembled and assembled.

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