JPH0347235B2 - - Google Patents

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a steel hatch cover for covering one or more holds having a rectangular hatch opened on the deck in a non-watertight pontoon. It concerns the storage space structure of.

[Conventional technology]

Conventional non-watertight pontoons typically use high-impact materials for the hatch coaming and other hatch structures to allow containers, wood, and other heavy items to be loaded on top of the hatch cover, which is usually made of steel. It has a solid structure.

Furthermore, when opening a hatch during cargo handling operations, a method was used in which steel hatch covers were distributed and stacked on the deck on both the left and right sides of the hatch for storage.

[Problem to be solved by the invention]

However, the conventional non-watertight pontoon mentioned above
To store the steel hatch cover during cargo handling operations,
Storage space is required on the left and right deck plates of the hatch, and the left and right width of the hatch becomes narrower by the area reduced by that space, creating a blind spot for cargo handling operations from above the deck on the left and right sides of the ship's hold. At the same time, depending on the type of cargo, a large space may be formed in the corner of the upper part of the hold where it cannot be loaded.
Furthermore, when the hatch is opened, the decks on the left and right sides of the hatch cannot be used as a passage, which poses a problem in that it becomes a walking obstacle for workers engaged in cargo handling work.

On the other hand, in a watertight pontoon, the width of the opening in the left and right direction of the hatch is wide, making it easier to open and close the hatch cover than in a non-watertight pontoon, and making cargo handling easier. Some hatch covers were also constructed so that they could be stored leaning against the front and rear decks of the hatch. However, the hatch structure of a watertight pontoon has low impact resistance due to its watertight structure, making it difficult to load wood and other heavy objects on the hatch cover, making it particularly unsuitable for loading South Sea lumber. are doing.

The present invention was devised in view of the above-mentioned problems, and in addition to forming a wide hatch width in the left and right direction similar to a watertight pontoon, the present invention also provides passageways for workers during cargo handling work on both the left and right decks of the hatch. ensure,
It is also an object of the present invention to provide a storage space structure for a steel hatch cover in a non-watertight type pontoon in which heavy objects such as South Sea lumber can be loaded onto the upper part of the steel hatch cover.

[Means to solve the problem]

In order to achieve the above object, the storage space structure of a steel hatch cover in a non-watertight pontoon according to the present invention has one or more hatches opened on the deck, and a plurality of hatches arranged in the longitudinal direction. In a non-watertight pontoon that is covered with two steel hatch covers that can be opened and closed, a notch is formed on the protruding edge of the winch platform mounted on the front and rear of the hatch, and The gist is that storage spaces for the steel hatch covers are provided in the upper and lower parts.

[Effect]

According to the above configuration, cargo handling operations in the cargo hold can be performed extremely easily compared to conventional non-watertight pontoons, and when the hatch is opened, the steel hatch covers are stacked on the left and right decks of the hatch. It is possible to store South Sea lumber and other materials on the steel hatch cover that covers the hatch opening, and it is possible to use a non-watertight pontoon. It is possible to significantly improve loading efficiency.

Additionally, since the lifting rope hanging from the boom can be moved into the notch formed on the hatch side of the winch platform, the steel hatch cover can also be stored at the bottom of the winch platform. .

〔Example〕

Hereinafter, a storage space structure for a steel hatch cover in a non-watertight pontoon according to the present invention will be explained with reference to the drawings.

In Figures 1 to 3, 1 is one or more hatches opened on the deck, and 2 is a plurality of steel hatch covers arranged in the longitudinal direction to cover the hatch 1. It is. A storage space 4 for the steel hatch cover 2 is provided below the winch platform 3 equipped at the front and rear of the hatch 1, and an opening A on the left and right sides of the hatch 1 is formed wide. This opening A can be made wider by about 2500 mm compared to the opening A' which has a structure in which the steel hatch cover 2 is normally stored on the deck 5 on both the left and right sides of the hatch 1. It is possible to make the dead space B' smaller than the blind area B' in the cargo hold 6 for cargo handling operations from above, and to make the dead space C formed at the upper corner of the cargo hold 6 smaller than C'.
This storage space 4 does not need to be constructed as a new outfitting structure for the ship's hull, and the lower storage space of the winch platform 3, which has traditionally been used as a storage or installation space for ship equipment, can be used to store the steel hatch cover 2. You can modify it as appropriate. This winch platform 3
As shown in Fig. 2, the protruding edge on the hatch side has a semi-circular hole shape, a semi-ellipse, through which the lifting rope 8 suspended from the boom 7 that is topped upward can freely enter and exit while moving in the front and rear direction. A notch 9 having an arbitrary shape such as a U-shape or a substantially U-shape is formed, and the area of the winch platform 3 is made small above the storage space 4 to the extent that it can be opened in whole or in part. Further, in this storage space 4, an auxiliary access/exit moving device (not shown) such as an overhead crane or a witch for moving in/out the steel hatch cover 2 may be arranged, if desired.

Therefore, when opening the hatch 1 for cargo handling work, the steel hatch covers 2 can be lifted one by one onto the boom 7 via the lifting rope 8, moved into the storage space 4, and stored while being stacked one by one. .

4 and 5 show another embodiment of the storage space, in which the winch platform 13 is lowered onto the deck 15 at the front and rear of the hatch.
A platform 10 for forming a storage space 14 above it is equipped. According to this embodiment, a plurality of steel hatch covers 12, 12, . . . can be stored while being stacked one after another from above.

〔Effect of the invention〕

Since the storage space structure of the steel hatch cover in a non-watertight pontoon according to the present invention is constructed as described above, it is possible to form a wide opening width on the left and right sides of the hatch, which facilitates cargo handling work. , the dead space in the hold can be reduced.

In addition, by loading South Sea lumber and other heavy objects on the upper surface of the steel hatch covers that cover the hatches, we improved the loading efficiency of non-watertight pontoons. The effects of implementing the present invention, such as being able to eliminate walking obstacles, are extremely large.

[Brief explanation of drawings]

Fig. 1 is a side view of the main parts showing a preferred embodiment of the storage space structure for the steel hatch cover in a non-watertight pontoon according to the present invention, Fig. 2 is a plan view of the main parts, and Fig. 3 is the structure formed in the hold. FIG. 4 is a side view showing another embodiment of the storage space, and FIG. 5 is a plan view. 1... Hatch, 2, 12... Steel hatch cover, 3, 13... Winch platform,
4,14...storage space, 5,15...deck,
6...Hold, 7...Boom, 8...Lifting rope, 9...Notch.

Claims (1)

[Claims] 1. One or more hatches are opened on the deck,
In a non-watertight type pontoon in which the hatch is covered with a plurality of steel hatch covers lined up in the longitudinal direction so that it can be opened and closed, a notch is cut in the protruding edge on the hatch side of the winch platform fitted at the front and rear of the hatch. A storage space structure for a steel hatch cover in a non-watertight pontoon, characterized in that a storage space for the steel hatch cover is provided in the upper and lower parts of the winch platform.