JPH0531033Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention mainly relates to an air inflatable boat (air boat) that is mounted on a large ship and lowered onto the water when necessary for use in work on the water, rescue work, etc.

[Conventional technology]

Air boats are widely used as rescue boats and support boats for marine accidents, for work such as painting and repairing ship hulls, and for recreational use. In particular, when mounted on a large ship and used as a rescue boat or support boat, the boat is lowered onto the sea or hoisted onto the boat using a lifting device such as a winch or crane. For this purpose, the airboat is equipped with a hanging member for a hanging rope.As shown in Figure 5, a conventional example of the attachment structure for the hanging member and the suspension method of the airboat is the transom board near the side. Hook locking members 1 are attached to both ends of 11.
2 and 12 are provided, and a hook locking member 15 is provided on the bow side of the boat, which passes through the bottom plate 13 and is hooked to the keel 14. A method of binding to a book wire W and suspending it with three-point support (Utility Model Publication No. 57-19359)
and tubes 2 on the bottom and both sides as shown in Figure 6.
A hook locking member 23 is attached to the upper edge of the reinforcing belt 22 glued across the reinforcing belt 1, and the rope 24 hooked to each locking member is tied to a single wire W and suspended by four-point support. Methods are known.

[Problem that the invention attempts to solve]

However, in both types, the airboat is lowered onto the sea in a nearly horizontal position or hoisted onto the ship, so the distance between the ship S carrying the airboat and another ship S′ and between it and the quay G is extremely large. If the space is narrow, lifting work is extremely difficult. (See Figures 7 and 8) Also, when hanging vertically using the latter conventional method (Figure 9), the hanging member for the hanging rope is provided on the outside of the boat. The problem was that the load was concentrated on the joint T between the latching member and the boat body, causing the joint T to break or peel off.

In view of the above problems, the object of the present invention is to provide an air boat that can be hung even in a narrow space and that does not place a large burden on the joint between the boat body and the latching member.

[Means for solving problems]

The present invention provides an air boat that is equipped with a tube that forms a gunwale with a circular cross section by filling air with it, and is equipped with two or more hanging rope fixing devices on at least one side of the boat, wherein at least one of the hanging rope fixing devices
This air boat is characterized by having at least one tube installed on the inside lower half of the tube.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings. The boat body 1 shown in FIG. 1 has tubes 2 on both sides from the bow to the stern. A bottom sheet 3 is stretched between the bottom surfaces of the tubes 2 on both sides, and a transom plate 4 is provided between the rear portions of both tubes 2. It shows a type that is supported and has a closed rear opening. Further, a bottom plate 5 forming the floor of the boat is stretched between the tubes 2 on both sides, and a keel 6 is installed in a space formed by the bottom plate 5 and the bottom sheet 3. By pressurizing air into the tube 2 of the boat body 1, the tube swells into a circular shape and becomes a gunwale that also serves as a float.

At least two hanging rope fixing devices 7 and 8 of the present invention are attached to one side of the boat body 1, as shown in the drawings. One hanging rope fixing device 7 is attached to the bottom side of the boat below the center of the circular cross section of the tube on the outer surface of the tube 2, that is, to the inner lower half of the tube. Reference numeral 10 in FIG. 2 is a connecting piece for fixing the suspension rope fixture 7 to the tube 2. The other suspension rope fixing device 8 is provided on the rigid transom plate 4. These hanging rope fixing devices 7 and 8 are latched with hooks, shackle, etc. provided on the hanging ropes a and b, or are attached to the hanging ropes a and b.
There is no particular limitation as long as it has a diameter and strength that allows it to be latched by directly binding them together. For example, an eye bolt, a D ring, etc. are used.

The relative positions of the hanging rope fixing devices 7 and 8 and the position where the balance is not lost when the boat body 1 is suspended are desirable. Also, as shown in FIG. 3, instead of the hanging rope fixing device 8 provided on the transom board 4, a hanging rope fixing device 9
may be provided on the inner lower half of the tube 2 in the same way as one of the hanging rope fixing devices 7. In this case, it is desirable that the hanging rope fixing devices 7 and 9 be positioned on the same horizontal plane.

As shown in Figures 1, 2, and 3, the hook F of the hanging rope a is hooked to the hanging rope fixing device 7, and the hanging rope a led to the center of the ship's side is connected to the other side of the same ship. The hanging ropes b and c that are hung on the hanging rope fixing devices 8 and 9 are tied above the center of the ship, and the tied point is hung on the wire W pulled out from a winch, crane, etc. mounted on the ship. Stop, this wire W
By winding and unwinding, the boat body 1 is hoisted onto the ship or lowered onto the sea. In the present invention, the hanging ropes a and b are pulled along the outer circumference of the tube 2, and the load of the boat body 1 is distributed along the tube 2, so that the hanging rope fixing devices 7 and 9 and the tube 2 are No locally concentrated load is applied to the joint, that is, the joint piece 10, and there is no fear that the joint piece 10 will peel or break.

The present invention is not limited to the above-mentioned embodiments, but can of course be applied to airboats whose sides are formed by annular tubes. As another example, as shown in FIG. 4, a set includes a suspension rope fixing device 7 provided on the inner lower half of the tube 2 and an annular body K provided on the upper or external side through which a suspension rope can be inserted. May be equipped. In this case, the portion of the hanging rope a along the tube 2 becomes longer, the concentrated load on the joint becomes smaller, and the boat body 1 becomes even more stable.

Furthermore, by attaching these hanging rope fixing devices 7, 8, and 9 to both sides, the boat body 1 can be suspended with two-point support from any of the bow, starboard, port, and stern directions. It is also possible to use normal four-point support.

[Effect of idea]

As described above, according to the present invention, since the hanging rope fixing device is attached so that the hanging rope follows the tube, the load of the boat body is distributed along the tube, and the load is not localized on the attachment part of the hanging rope fixing device. The boat body can be stably supported by two-point support without being hung up, and it can be easily lifted and lowered even in narrow spaces.

Furthermore, since this hanging rope fixing device is attached to the inside of the boat body, there is no need for a reinforcing belt that protrudes to the outside or spans the bottom of the boat, and does not impede the running performance of the boat.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing one embodiment of the present invention;
The figures are a cross-sectional view taken along the line -- in Figure 1, Figures 3 and 4.
The figures are perspective views showing other embodiments of the present invention, respectively;
Fig. 5 is a plan view showing a first example of a conventional air boat, Fig. 6 is a plan view showing a second example of a conventional air boat, and Figs. FIG. 2 is an explanatory diagram showing a state of a conventional boat hoisting operation. 1... Boat body, 2... Tube, 3... Bottom sheet, 4... Transom board, 5... Bottom plate, 6...
...Keel, 7, 8, 9... Hanging rope fixing device, 10...
...Joining piece, a, b, c... Hanging rope, W... Wire, F... Hook, K... Annular body.

Claims (1)

[Scope of utility model registration request] An air boat that is equipped with a tube that forms a gunwale with a circular cross section by enclosing air, and is equipped with two or more suspension rope fixing devices on at least one side of the boat,
An air boat characterized in that at least one of the hanging rope fixing devices is installed on the inner lower half of the tube.