JPS6136474Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a novel roll-up type hatch cover in which the height of the roll-up shaft and hatch combing is reduced.

(Prior Art) A hatch cover is known in which a large number of cover panels are connected by hinges and are stored by being rolled up on a winding shaft. As shown in FIGS. 1 and 2, this known hatch cover has a large number of cover panels 1, 1, .
and connect one end by hatch combing 4.
A winding shaft 6 on a pedestal 5 fixedly facing one end
It is connected to. Then, the hatch is opened by rolling up a large number of connected cover panels 1, 1... onto the winding shaft 6, and the cover panels 1, 1... are rolled out from the winding shaft onto the coaming 4. It is designed to close the hatch.

(Problem to be solved by the invention) In the above-mentioned known roll-up type hatch cover, each cover panel 1, 1... has a U-shaped cross section, so when these cover panels are rolled up, the cover The distance between the bent corner 1' of the panel 1 and the winding shaft 6 becomes longer, and a certain height H of the winding shaft 6 from the upper deck 7 is required accordingly. The height H' of the hatch combing 4 had to be increased in accordance with the height H of the winding shaft 6. As a result, a large storage space was required when the cover panel was rolled up. Furthermore, since the shape of the known cover panel has a U-shaped cross section as described above, the center of gravity of the cover panel in the closed state is also high.

The present invention was developed with the aim of reducing the height of the winding shaft from the upper deck by devising the cross-sectional shape of the cover panel, thereby lowering the height of the hatch coaming. be.

(Means for solving the problem) For this purpose, in this invention, each cover panel is
It has an overhanging edge on the winding side and the unrolling side,
The intermediate portion between these projecting edges is formed into a bulging shape, and the projecting edges on the rolling-up side and the rolling-out side of each adjacent cover panel are connected by a hinge.

(Example) The details of the present invention will be explained below with reference to preferred embodiments shown in the drawings.

In the figure, reference numerals 11, 11, . . . are cover panels that are a feature of the present invention, and each panel has an overhanging edge 12 on the unrolling side and an overhanging edge 1 on the unwinding side.
2', and the intermediate portion 18 between these projecting edges 12, 12' is in a bulged shape. In the embodiment shown in the drawings, the bulging intermediate portion 18 has a trapezoidal cross-section, but this shape is not necessarily limited to a trapezoidal cross-section, and may be a semicircular cross-section or a rectangular cross-section. Alternatively, these cover panels may have the intermediate portion 18 and the projecting edges 12, 12' made of a single plate, or may be made of different plate materials and fixed together by means such as welding. It may also be integrated. Each of these cover panels is connected by a hinge 13, by abutting the overhanging edges 12, 12' of each adjacent cover panel 11, 11 on the rolled-up side and unrolled side.
It is 13. Similar to known cover panels, this multi-hinged cover panel has one end rolled out onto a winding shaft 16 supported on a pedestal 15 fixed on the upper deck 17. It is designed to be rolled out.

Each panel 11, 11 of the hatch cover of the present invention has slanted left and right side wall plates 19, 19 like the known panel.
A horizontal plate 20 is projected from the lower end position, and a main hinge 21 is fixed to this horizontal plate 20. The winding shaft side end of the main hinge 21 has a bifurcated structure 22
and the rolling-out side end 23 of the adjacent main hinge 21
are received and connected by a hinge pin 24. The base of the winding shaft side end formed of the forked structure 22 has an engaging portion 25 that engages with the tip of the winding side end 23 of the adjacent main hinge, while the winding side end of the main hinge 21 Pressure receiving blocks 26, 26 that engage with the tips of the bifurcated structure 22 of the main hinge 21 adjacent to each other on both sides of the nearby position are fixed, and these two
The support strength of the cover panel is increased by dividing the load support points of the cover panel by engaging the parts.

Further, reference numeral 27 shown in FIGS. 6, 7, and 9 is a watertight rubber packing between the panels, which is fixed by presser metal plates 28, 28, and the intermediate portion thereof is bulged upward as shown in FIG. Further, reference numeral 29 shown in FIG. 7 is a rubber gasket fixed on the lower surface of the horizontal plate 20, which cooperates with a tightening bar 30 fixed on the hatch coaming 14. Reference numeral 31 shown in FIG. 9 is a protective cover for the rubber packing 27, which is removably attached to the cover panel.
is a reinforcing member of the cover panel. In addition, 33 shown in FIG. 5 is an arm connecting the winding drum 34 and the main hinge 21 of the cover panel, and has the same structure as the main hinge 21 described above.

The hatch cover of the present invention having the above-mentioned structure is similar to the known hatch cover shown in FIGS.
When the cover panel is rolled up, the hatch is opened, and when the cover panel is rolled up, the cover panel is sent out onto the hatch coaming 14, and the hatch is closed.

When the hatch cover of the present invention is rolled up on the winding shaft 16, each cover panel 11, 11
However, there is an overhanging edge 1 on the winding side and the unrolling side.
2 and 12', and the middle part between these projecting edges is formed in a bulging shape, so that the bent corner part 1' of the cover panel 1 having a known U-shaped cross section
Since there is no part corresponding to , the distance from the winding shaft 16 can be shortened. That is, as is clear by comparing FIG. 2 and FIG. 4, the portion corresponding to the bent corner 1' located at the longest distance from the winding shaft 6 of the known hatch cover is the intermediate bulge. 18
Since the structure of the overhanging edges 12 and 12' resulted in a removed form, it was possible to shorten the diameter of the rolled-up cover panel around the winding-up axis 16. Therefore, the height h of the winding shaft 16 from the upper deck 17 could be reduced. As a result, not only was it possible to reduce the height h' of the hatch coaming 14, but also the space required to store the cover panel in its rolled-up state was reduced. Furthermore, as a result of forming the cover panel in the shape described above with the overhanging edges 12, 12' formed on both edges of the intermediate portion 18, the center of gravity of the cover panel in the unrolled horizontal position is lower than that of known cover panels. We were able to. Therefore, the overall center of gravity of the hatch coaming and cover panel can be lowered, and the center of gravity of the ship can be lowered accordingly, which has the great advantage of helping to improve safety.

Furthermore, as mentioned above, by lowering the height of the hatch coaming, its weight can be reduced, which has the practical advantage of increasing the ship's carrying capacity accordingly. Furthermore, since the coaming can be made low, the amount of movement of the cargo handling crane can be reduced, which also has the effect of reducing time loss and increasing cargo handling efficiency.

In addition, according to the shape of the cover panel of the hatch cover of the present invention, when the cover panel is rolled out, there is no overlap between the cover panel parts.
It has the advantage that each part can be easily inspected in the rolled-out state, and maintenance such as painting can be easily performed in the rolled-out state, which has great effects.

[Brief explanation of the drawing]

FIG. 1 is a side view of a known roll-up type hatch cover in a rolled-out state, FIG. 2 is a side view of the same rolled-up state, and FIG. 3 is a side view of a preferred embodiment of the invention's hatch cover in a rolled-out state. 4 is a side view showing the winding state, FIG. 5 is a front view showing the arm portion between the winding drum and the cover panel, and FIG. 6 is a partial plan view showing the connecting portion between the cover panels. , FIG. 7 is a partially cutaway front view taken along the upper line of FIG. 6, FIG. 8 is a front view showing the connecting portion of the main hinge, FIG. FIG. 10 is a plan view showing the connected state of the main hinge, and FIG. 11 is a front view showing the connected state of the main hinge, with a portion cut away. 11... Cover panel, 12, 12'... Overhanging edge, 13... Hinge connection, 18... Intermediate portion.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) Each cover panel has an overhanging edge on its rolled-up side and unrolled side, and the intermediate part between these overhanging edges is formed in a bulged shape, and each adjacent A roll-up hatch cover characterized in that the overhanging edges on the roll-up side and the roll-out side of the cover panel are connected by a hinge. (2) The roll-up type hatch cover according to claim (1), wherein the intermediate portion has a substantially trapezoidal cross section. (3) The roll-up type hatch cover according to claim (1), wherein the intermediate portion has a substantially semicircular cross section. (4) The roll-up type hatch cover according to claim (1), wherein the intermediate portion has a substantially rectangular cross section.