JPH06179391A - Opening and closing device for hatch cover - Google Patents

Abstract

PURPOSE:To carry out the safe closing action of a hatch cover by moving the hatch cover up by a lifting means when the hatch cover is opened, transshipping a travel wheel provided for the shaft section of the hatch cover over to a closing guide rail, and thereby laterally moving the hatch cover for opening a hatch. CONSTITUTION:When one hatch cover is opened in a state that adjacent two hatch covers are closed by hatch covers 2A and 2B, a drive cable 16 is moved with a winch drum rotated by a drive motor, and a locking fixture 19 attached onto the drive cable 16 is aligned with the shaft section 6 of the hatch cover 2A, so that the locking fixture 19 is thereby mounted onto the shaft section 6 by a mounting bolt 18. Concurrently, a bracket 14 attached to a cut-out section 9 provided for a rail support body 8, is removed. After the hatch cover 2A has been raised up with a lift cylinder 12 extended, the hatch cover 2A is moved to the right via the drive cable 16, a travel wheel 5 is transshipped onto a closing guide rail 4 so as to be moved upward above the hatch cover 2B, so that the hatch is thereby opened.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hatch cover opening / closing device for a cargo hold of a large cargo hold for loading and unloading a heavy load such as a carrier.

[0002]

2. Description of the Related Art Conventionally, a hatch cover of a carrier for carrying heavy objects such as radioactive substance storage containers (hereinafter referred to as casks) has been
It is divided into two parts, and it is lifted by a gantry crane traveling on the upper deck and carried on the adjacent hatch cover to open and close.

[0003]

However, although many workers carry out the unloading and loading work of heavy objects, the cask carrier has a relatively small hull, so that a large swinging and heavy hatch cover is required. When hanging, there was a problem that it was dangerous. In addition, with the double-opening method that opens to the left and right, there is a hatch cover around the hatch combing, so it is difficult to observe the details such as unpacking and directing, and workers cannot freely deploy around the hatch combing. There was a problem that the flexibility of work was low.

The present invention solves the above problems by providing a hatch cover opening / closing device that can safely open and close a large and heavy hatch cover, has a wide field of view inside the warehouse, and has a high degree of freedom in the work around the hatch coaming. The purpose is to provide.

[0005]

In order to solve the above problems, a hatch cover opening / closing device of the present invention has a pair of opening / closing guide rails extending over both sides of a plurality of hatch coamings.
Arranged above the hatch cover at the kuraguchi closed position,
Provided on both sides of the hatch cover are a plurality of traveling wheels guided by an opening / closing guide rail, and a portion of the opening / closing guide rail corresponding to the traveling wheels of the hatch cover at the warehouse closing position,
It is composed of a lift guide rail that can be lifted and lowered, and this lift guide rail is placed at a lower position where the hatch cover closes the warehouse opening,
A rail elevating device for elevating and lowering between upper positions at the same level as the opening / closing guide rail is provided, and a cover moving device for moving the hatch cover between the plurality of hatch coaming along the opening / closing guide rail is provided.

[0006]

In the above structure, the hatch cover at the closed position is lifted from the lower position to the upper position by the rail lifting device via the lifting guide rail, and the cover moving device is driven to move the hatch cover from the lifting guide rail to the opening / closing guide rail. The closure can be opened by moving it over the hatch cover in the other closed position along with, and can be closed in the reverse order. Therefore, it is much safer than using a gantry crane as in the past, and has a higher degree of freedom around the hatch coaming than a double-opening type hatch cover, and it is possible to secure a wide field of view necessary for carrying in loads. it can.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a hatch cover opening / closing device according to the present invention will be described below with reference to the drawings.

In this hatch cover opening / closing device, one of the hatch covers 2A and 2B which closes a plurality of (two in the drawing) shed openings 1A and 1B, one hatch cover 2A of the other hatch cover 2B is closed. Move upwards to Kuraguchi 1
A is opened, and conversely, the other hatch cover 2B is moved above the hatch cover 2A at one closed position to move the hatch 1
B is opened.

That is, the hatch coaming 3 is provided around each of the two warehouse openings 1A and 1B arranged side by side on the deck.
A and 3B are provided, and hatch combing 3A and 3B are provided.
Opening and closing guide rails 4 are respectively arranged on both port side portions of B between the hatch coamings 3A and 3B.
Further, on the hatch covers 2A and 2B, traveling wheels 5 that can travel on the open / close guide rails 4 are rotatably provided via shafts 6 at the front and rear positions on both sides of the port. In the opening / closing guide rail 4, the hatch covers 2A, 2B guided and supported on the opening / closing guide rail 4 via the traveling wheels 5 are located above the hatch covers 2A, 2B at the closing position of the opening.
It is laid on a rail support 8 provided via support legs 7.

On the other hand, the hatch cover 2 at the closing position of the opening
The rail support 8 and the opening / closing guide rail 4 portion for the traveling wheels 5 of A and 2B are formed with a notch 9 into which the traveling wheel 5 can be fitted, and the notch 9 can be continuous with the opening / closing guide rail 4. An elevating body 11 having a vertical elevating guide rail 10 is arranged so as to be movable up and down, and a rail elevating cylinder device 12 in which a piston rod is connected to the elevating body 11 is arranged below the cutout portion 9. By driving the rail lifting cylinder device 12, hatch covers 2A and 2B supported by the lifting guide rail 10 are driven.
Makes the hatch covers 2A, 2B movable along the open / close guide rails 3 by setting the lower position for closing the kuraguchi 1A, 1B on the hatch combing 3A, 3B and the elevating guide rail 10 at the same level as the open / close guide rails 3. It can be moved up and down between upper positions. Reference numeral 13 is a stopper which is provided at both ends of the rail support 5 and serves as a movement limit of the hatch covers 2A and 2B, and 14 is a hatch cover 2 at the closed position.
A bracket that covers the cutout portion 9 above the traveling wheels 5 of A and 2B, and a joint rail 14a that is continuous with the elevating guide rail 10 is attached to the upper surface.

Around the hatch coaming 3, there is provided a cover moving device 15 for opening and closing the hatch covers 2A and 2B along the open / close guide rail 3. The cover moving device 15 drives a pair of left and right endless drive ropes 16 by a winch drum 17. The endless drive ropes 16 have bolts 18 attached to the shaft portion 6 of the traveling wheel 5.
Detachable locking tools 19 are attached to the front and rear through two positions. The stern side of the drive rope 16 is wound around a winch drum 17 and a guide sheave 21 that are interlocked with each other via an interlocking shaft 20, and the bow side is wound around a turning sheave 22 and a guide sheave 23. Tension is applied to each sheave 21, 22, 23. Further, the left and right drive ropes 16 are synchronously moved in the bow-stern direction by the movement motor 24 interlockingly connected to the winch drum 17, and the fastener 19 is attached to the shaft portion 6, whereby the hatch cover 2A, 2B can be moved along the opening / closing guide rail 3 to open / close.

An opening / closing operation of the hatch cover opening / closing device having the above-described structure will be described. Ryokuraguchi 1A and 1B are hatch covers 2A and
When opening the hatch cover 2A of the hold opening 1A from the state of being closed by 2B, the drive cable 16 is moved by the drive motor 24 to align the locking tool 19 with the shaft portion 6 of the hatch cover 2A, and The stoppers 19 are attached to the respective shaft portions 6 via the attachment bolts 17, and the brackets 14 attached to the cutout portions 9 on the side of the shed 1A are removed. Then, the rail lifting cylinder device 12 of the slot 1A is advanced to lift the lifting guide rail 10 and the hatch cover 2A from the lower position to the upper position. Then, the moving motor 24 is driven to rotate the winch drum 17, the hatch cover 2A is moved to the bow side via the drive rope 16, and the traveling wheels 5 are transferred from the lift guide rail 10 to the open / close guide rail 4. The other hatch cover 2B. As a result, the warehouse opening 1A can be opened.

When closing the hold 1A after carrying in the load, the hatch cover 2A is hatched by the combing operation 3 in the reverse operation.
It is placed on A and closed, and the bracket 14 is attached to the notch 9.

When the hold opening 1B is to be opened, the hatch cover 2B can be moved to a position above the hatch cover 2A and opened as described above. In the above embodiment, 2
Although this hatch cover opening / closing device is provided in each of the three openings 1A and 1B, it may be provided in three or more openings.

[0015]

As described above, according to the present invention, the hatch cover at the closed position is lifted from the lower position to the upper position by the rail elevating device via the elevating guide rail, and the cover moving device is driven. Then, the hatch cover can be opened by moving the hatch cover from the elevating guide rail to the hatch cover at another closed position along the open / close guide rail, and can be closed in the reverse order. Therefore, it is much safer than using a gantry crane as in the past, and has a higher degree of freedom around the hatch coaming than a double-opening type hatch cover, and it is possible to secure a wide field of view necessary for carrying in loads. it can.

[Brief description of drawings]

FIG. 1 is a side sectional view of an essential part showing an embodiment of a hatch cover opening / closing device according to the present invention.

FIG. 2 is a front view of a main part of the hatch cover opening / closing device.

FIG. 3 is an overall plan view of the hatch cover opening / closing device.

FIG. 4 is an overall side view of the hatch cover opening / closing device.

[Explanation of symbols]

 1A, 1B Kuraguchi 2A, 2B Hatch cover 3A, 3B Hatch combing 4 Opening / closing guide rail 5 Traveling wheel 6 Shaft 8 Rail support 9 Notch 10 Lift guide rail 12 Rail lifting cylinder device 13 Stopper 14 Bracket 14a Joint rail 15 Cover moving device 16 Drive rope 17 Winch drum 19 Locking tool 22 Turning sheave 24 Moving motor

Claims (1)

[Claims] 1. A pair of opening / closing guide rails are arranged above both sides of a plurality of hatch coamings and above a hatch cover at the closing position of the shed, and a plurality of opening / closing guide rails are guided on both sides of the hatch cover. A traveling wheel is provided, and the opening / closing guide rail of a portion corresponding to the traveling wheel of the hatch cover at the closing position of the opening is configured as a lifting guide rail that can be raised and lowered, and the hatch guide closes the opening at the hatch cover. A rail elevating device that elevates between a lower position and an upper position that is at the same level as the opening / closing guide rail is provided, and a cover moving device that can move the hatch cover between the plurality of hatch coaming along the opening / closing guide rail is provided. A hatch cover opening / closing device characterized in that