JPS6137591A - Method of maintenance for rear surface of hatch cover - Google Patents

Abstract

PURPOSE:To facilitate the maintenance work for the rear surface of a foldable hatch cover, by stretching a plurality of wire between hatch end coamings to displaceably suspend a gondola. CONSTITUTION:In a maintenance method of the rear surface of a foldable hatch cover, a plurality of wires 3 are stretched between hatch end coamings 2, and a gondola 4 is displaceably suspended from the wires 3. A worker who has boarded the gondola after closing of the hatch cover 1, carries out the maintenace of rear surface of the hatch cover. Thereby it is possible to facilitate the working method of preventing corrosion, etc. of the hatch cover.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a hatch cover, and more particularly to a method for maintaining the back side of a folding type hatch cover.

[Conventional technology and its problems]

A so-called folding type hatch cover is commonly used for ships.

The back side of the hatch cover on cargo ships is directly exposed to the contents of the ship's hold and is prone to problems such as corrosion, so maintenance and inspection of the back side is essential! However, such maintenance and inspection is relatively easy with the so-called side slide type hatch cover, but with the above 7 ordering type, which is folded so that the back side of the cover is on the inside when opened, the side slide type hatch cover is relatively easy to carry out. It was not possible to inspect the back of the cover on the deck, and there was no easy maintenance method. For this reason, with this type of hatch cover, it has been necessary to strengthen anti-corrosion measures such as painting the back surface, using a high-grade T11 film, and using a double skin type cover.

The present invention was made in view of such conventional problems,
It is an object of the present invention to provide a method that allows easy maintenance and inspection of the back side of a folding type hatch cover.

[Means and Examples for Solving the Problems] Therefore, the present invention provides a hatch cover (1) as shown in FIG.
With the wires (3) open, a plurality of wires (3) are stretched between the two end coamings (2), and the gondola (4) is movably suspended from the wires (3).
As shown in (b), the hatch cover (1) is closed and the operator (A) riding in the gondola (4) performs maintenance and inspection on the back side of the hatch cover.

Hereinafter, details of the invention will be explained based on FIGS. 2 to 4.

Figure 2 shows the hatch section with the hatch cover omitted (53 is the upper deck).

An eye plate (6) for attaching wires is provided on the inside of both hatch end coamings (2), and the two wires (
3) are connected to these eye plates (6) so that each wire (3) is stretched between the hatch end coamings.
) is attached to the eye plate (6) via the shackle (7).
) is installed. Further, a turnbuckle is provided in the middle of the end portion of the wire (3) to enable adjustment of the tension of the stretched wire (3).

After installing such wires, wire (3) K gond 2 (
4) Hang it so that it can be moved. A removable pulley (9) is attached to both wires (3) along their longitudinal direction, and the bond'y (4) is connected to the pulley (9) and the hanging shear α.
0 from the wire (3). Pulley (9
A stopper a2 for preventing the pulley (9) from rotating is attached to the platen (C1η) that holds the pulley (9) as necessary.

In order to easily attach and detach the gondola (4) to the wire (3), a collapsible type as shown in FIGS. 5 and 6, for example, can be used. This gondola (4) has a frame made of pipes, etc., a bottom plate that is removably attached to the frame, and a net that extends around the frame. Each corner or its vicinity and the middle part of the vertical member aQ are constructed so that they can be bent around the pivot joint (B), and are assembled as shown in Figure 5 (A) when in use, and when stored as shown in Figure 5 (B). ) and (c).

A worker (A) is on top of the gondola suspended in this way.
) is on board, the hatch cover (not shown) is closed, and the worker (A) performs maintenance and inspection on the back of the hatch cover from above the gondola (4).The worker moves the gondola while pulling the wire (3). (4) Move.

〔Effect of the invention〕

According to the present invention described above, the back side of a folding type hatch cover can be maintained and inspected relatively easily, making it unnecessary to take conventional special anti-corrosion measures for the back side of this type of hatch cover, and reducing equipment costs. can be achieved.

[Brief explanation of drawings]

FIGS. 1A and 1B are explanatory diagrams showing the basic structure of the method of the present invention. FIG. 2 is an explanatory diagram specifically showing the state of implementation of the method of the present invention. FIG. 3 is a detailed view of the wire attachment portion in FIG. 2, and FIG. 4 is a detailed view of the pulley portion. 5(a) to 5(c) are explanatory diagrams showing an example of a gondola used in the present invention, and FIG. 6 is a detailed diagram of a part of the structure. In the figure, (1) is a hatch cover, (3) is a wire,
(4) shows each gondola.

Claims (1)

[Claims] Folding type hatch cover In the maintenance method on the back side, If multiple wires are stretched between In both cases, the gondola can be moved to the wire. Hang it up and place it in front with the hatch cover closed. A worker on board the gondola A ha that features maintenance on the back of the cover. How to maintain the back of the Tsuchi cover.