JPS5942308Y2 - Hatch coaming top protection device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a protection device for the top surface of a hatch comb.

For example, when unloading cargo such as coal or ore into a hold using a dumping machine through a hatch with a side-rolling hatch cover, or when unloading cargo outside the hold,
In particular, a portion of the cargo tends to fall and accumulate on the hatch side coaming, which is located toward the inside of the ship, which is the direction in which the cargo is unloaded.

There is a watertight compression bar on the top surface of the side coaming, which makes it extremely difficult to remove accumulated material around this area, and it is impossible to completely clean (remove) the deposits.

That is, conventionally, such deposits have been removed manually using a shovel or the like, and although it requires a large number of people, it is not possible to expect a complete work.

In addition, recent ships have become larger, with nine to ten 16m x 16m hatches, making it difficult to work manually.

As mentioned above, if the deposits cannot be completely removed, various problems will occur at the time of closure.

In other words, the hatch cover that has been moved to the closed state is lowered,
The backing provided on the bottom surface is brought into contact with the compression bar protruding from the top surface, and then tightened.
The structure is designed to be weather tight or watertight, but if there is sediment left on the top surface, it will not be tightened completely, damaging the backing and causing seawater to enter the hold. It also becomes.

In order to solve the above problem, it is possible to attach a cover made of a steel plate to the hatch cover so that it can rotate around the horizontal axis, and cover the side coaming top surface with the cover when the hatch cover is opened. When an integral cover made of inflexible steel plate or the like is used, the following problems arise.

In other words, there are many protrusions such as compression bars protruding from the side coaming top surface, and it is difficult to process the cover integrally into a shape that fits such protrusions, and it would be difficult to process the cover integrally into a shape that fits such protrusions. Even if the hatch cover is machined, there is a risk that the cover itself may get caught on the protrusion when opening and closing the hatch cover.

On the other hand, if the cover is made into a flat plate, the cover will be supported at one point by the highest protrusion among the protrusions on the side combing top surface, making it unstable and reducing the dustproof effect. Very small.

Furthermore, if the cover is made to be foldable, there will be a problem when storing the product by hanging it.

For this reason, when the cover is made of steel plate, the length of the cover must be shortened, and the hatch cover cannot be moved far from the side coaming FjJ) when the hatch cover is opened.

Moreover, during cargo handling in the cargo hold, a problem arises in that the weathertight backing near the center of the hatch cover comes into contact with the grab handling rope and is damaged.

Therefore, it has been proposed that a sheet is attached to the lower part of the central joint of the hatch cover so that the sheet covers the side combing top surface when the hatch cover is opened.

In this hatch coaming - one side protection device, the sheet is bent due to falling cargo and the side coaming track is damaged.
In order to be in close contact with the ffi, the width of the sheet was made sufficiently long so that it could reliably cover the entire side combing top surface in a bent state.

However, with this kind of product, one problem is that when the sheet is bent due to falling cargo, the lower edge of the sheet slides up onto the top surface of the side coaming, and the sheet is damaged due to friction with the upper corner of the inner surface of the side coaming. There was a problem.

The present invention proposes a protection device for the top surface of a hatch combing that can solve the above-mentioned problems, and an example thereof will be explained below based on the drawings.

1 shows the hull, and 2 shows the side rolling type hatch cover.

The hatch coaming 4 forming the rectangular hatch 3 is composed of a pair of hatch side coamings 5 in the inboard direction and a pair of hatch end coamings 6 in the bow and stern direction,
A compression par 8 is laid on the side coaming top surface 7.

A corresponding backing (not shown) is attached to the lower surface of the hatch cover 2.

Note that the rail running rail and compression par laid on the end coaming top surface 9 and the corresponding backing are omitted.

A sheet 11 having a length equal to the hatch opening length is attached to a lower portion of the central joint portion 10 of the hatch cover 2 in a hanging manner.

That is, the central joint portion 10 is composed of a plate 12 protruding from one side of the hatch cover 2 and a backing 13 provided on the other side.

Mounting fittings 14 are attached to one end of the sheet 11 at appropriate intervals in the longitudinal direction with bolts and nuts (f, not shown) or the like.

The mounting metal 14 is rotatably attached to a shaft 15 fixed to the lower end of the side surface of the hatch cover 2, and the seat 11 is rotatable around the shaft 15.

L-shaped stoppers 16 are fixed to the lower end of the sheet 11 at appropriate intervals in the lengthwise direction by bolt nuts (not shown) or the like.

The length of this sheet 11 in the width direction, that is, in the downward direction is slightly longer than the dimension that just covers the side combing top surface 7 when the hatching force par 2 is opened.

2 and 4 show the hatch cover 2 in its closed state.

At this time, the plate 12 and the backing 13 are in contact with each other, and the sheet 11 is hanging down inside the hatch 3 due to its own weight.

3 and 5 show a state in which the hatch cover 2 is opened and cargo handling work is being carried out.

At this time, the sheet 11 completely covers the side coaming top surface 7 with the compression par 8, so that the cargo 17 that falls during cargo handling can be supported on the upper surface of this sheet 11.

Before the cargo 17 falls onto the seat (ILL), the sheet 11 is in the state shown in phantom in FIG.

When the cargo 17 falls and accumulates on the sheet 11, the sheet 11 is bent. At this time, the stopper 16 engages with the upper end of the inner surface of the hatch side coaming 5, as shown in FIG. 11 is prevented from deflecting.

Therefore, there is no need to use a wide sheet (that is, a large dimension in the downward direction) and let the lower end of the sheet hang long inside the hatch 3 as in the conventional case, and the width of the sheet 110 can be shortened, which is economical. At the same time, the lower end of the seat is not lifted up to the side coaming top surface 7h due to the fall of the cargo 17, and at this time, the seat is not damaged due to friction with the corner of the upper end of the inner surface of the hatch side coaming 5.

Further, the cargo 17 accumulated on the upper surface of the seat 11 automatically falls into the hold by closing the hatch cover 2.

Although the side rolling type was described in the above embodiment, it may also be an end rolling type as shown in FIG.

In this case, the end combing top surface 9 is covered by the sheet 11.

As described above, according to the present invention, the sheet is highly flexible, so it conforms well to the hatch coaming top surface with many protrusions, and cargo that falls during cargo handling can be caught on the -L side of the sheet. It can be supported reliably, and cargo that has accumulated on the top surface of the seat can be returned to the hold by closing the hatch cover, allowing the side or end coaming top surface to be kept clean at all times, and a completely watertight structure can be expected.

Further, the seat can be automatically switched between the working position and the non-working position by opening and closing the hatch cover as desired.

Furthermore, since the stopper can restrict the deflection of the sheet, damage to the sheet can be reliably prevented.

It is also economical because the width of the sheet can be shortened.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a plan view of the bow side, FIGS. 2 and 3 are plan views of the main parts showing the operating state, and FIG.
The figures are a sectional view taken along the line AA in FIG. 2, FIG. 5 is a sectional view taken along the line BB in FIG. 3, and FIG. 6 is a plan view of the bow side of another embodiment. 2...Hatch cover 3...Hatch,
4...Hatch combing, 5...Hatch side combing, 6...Hatch end combing, 7...Side combing top surface, 9
...End combing top surface, 10...
...Central joint, 11... Sheet, 16...
...Stopper.

Claims (1)

[Scope of utility model registration request] A sheet with a length equal to the length of the hatch opening is attached in a hanging manner to the lower part of the central joint of the hatch cover, and a stopper that can be secured to the inner surface and upper end of the hatch coaming is attached to the lower end of the sheet. Hatch combing - one side protection device.