JP2945363B2 - Middle deck hatch cover support device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a support for supporting a middle deck hatch cover using a recess formed in a ship-side bulkhead or a horizontal bulkhead at a height position or at a plurality of positions of a cargo hold. The present invention relates to a device and an assisting device for facilitating setting of the hatch cover in a hold.

[0002]

2. Description of the Related Art A middle deck hatch cover is located at a height or at a plurality of positions of a cargo hold.
This is for supporting using a ship-side bulkhead or a horizontal bulkhead, and loading cargo on it.

A multipurpose cargo ship (open bulker) for transporting containers, roll paper, package lumbar, etc.
For heavy cargo vessels that transport large cargo such as containers, power plants, and steel rolls, a hatch with an opening width / length almost the same as the width / length of the cargo hold is required to load cargo efficiently. The bulkhead, side bulkhead, and double bottom of the cargo hold have a flush structure without protrusions. When a middle deck hatch cover is installed in a cargo hold having such characteristics, the hatch cover support device requires technical contrivance.

One of the conventional hatch cover support devices is one that opens a plurality of recesses in a ship-side bulkhead or a horizontal bulkhead, and mounts a plurality of portable cover support hardware in the recesses to support the hatch cover. is there. In this case, since the hatch cover and the supporting hardware having the strength to withstand the weight of the cargo on the hatch cover are heavy and cannot be operated only by human power, the work of mounting and removing the supporting hardware is performed using the cargo handling crane of the ship. This operation deteriorates the cargo handling efficiency because the cargo handling crane is used.

On the other hand, as a fixed type hatch cover supporting device, a movable supporting hardware is installed in a plurality of recesses provided in a ship-side partition or a horizontal partition, and is projected by human power or power to support the hatch cover. (This type of support device is intended for container support, but there is Japanese Utility Model Laid-Open No. 61-100697). This hatch cover support device is disadvantageous in terms of equipment economy because it requires a plurality of times of supporting hardware when the hatch cover is to be supported at a plurality of levels (height positions). The number of man-hours required to perform is large.

[0006]

In order to solve the above-mentioned problems, a supporting device for a middle deck hatch cover according to the present invention is provided with a middle deck hatch in a recess formed in a bulkhead side partition partitioning a cargo hold. In a structure in which the cover is supported via a support arm, a rotation axis is provided on the aggregate of the hatch cover, and the support arm is mounted on the rotation axis and projects from the hatch cover toward the recess. Switchable between a state and a stowed state stored inside the hatch cover, one end of the drive arm is connected to the rotation shaft, a drive cylinder is connected to the other end , and the support arm is sandwiched by the rotation shaft. Outer part and inner part
And a support die.
When the arm is in the extended state, it comes into contact with the
Movement of the support arm and in the retracted state of the support arm,
A strike that abuts the outer part of the support arm to regulate its movement
The hatch cover is provided with a
A guide member for holding the holding arm is provided .

[0007] This makes it possible to easily form the protruding state / housing state of the support arm by extending / shortening the drive cylinder. Since the drive means of the support arm is arranged on the hatch cover side, drive equipment including piping etc. can be easily installed at the time of manufacturing the hatch cover, so that the structure of the recess itself on the hull side is greatly simplified. . Support arm is balanced type
If so, the power of the drive cylinder is small. Also, strike
The lid member plays the role of a cradle when the support arm is in the extended position.
At the same time, it helps to keep the storage position of the support arm constant.

In this case, if both the drive arm and the drive cylinder are provided so as to form a letter C in a state where the support arm protrudes, the driving moment when the support arm protrudes can be increased.

[0009] Further, both ends of the drive cylinder may be detachably provided on the drive arm side and the hatch cover side, respectively, and these may be replaced with turnbuckles when the drive cylinder fails. With a simple configuration, it can be used as backup means in the event of a drive cylinder failure.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 (a) and 1 (b) are a side view and a plan view of a main part of a support device in a state where a middle deck hatch cover is supported by a ship-side bulkhead recess, and FIG. 2 is a front view of the recess at this time. However, this drawing shows a guide provided to prevent the hatch cover from shifting in the front-rear direction due to pitching while the ship is sailing. FIG. 3 is a side view showing a state where the support arm is stored in the back of the hatch cover. For example, in the case of a heavy load carrier having a wide cargo hold 1 as shown in FIG. 7, a movable middle deck hatch cover H is provided in the hold 2 in a predetermined manner in order to flexibly correspond to the height of the cargo and to improve the transportation efficiency. As described above, the device may be provided at a predetermined height or at a predetermined number of steps. The middle deck hatch cover H is supported via a support arm 5 in a recess 4 formed in a ship-side bulkhead 3 forming a double hull structure.

The support arm 5 is rotatably supported at four corners of the hatch cover H (FIG. 5), and is stored in the hatch cover H as shown in FIG. 3 can be freely switched to a state protruding from the hatch cover H. As shown in FIG. 6A described later, when the hatch cover H comes to the position of the recess 4, the support arm 5 is projected and seated in the recess 4 so that the hatch cover H can be supported on the hull. I have.

Further, details of the support device will be described. As shown in FIGS. 1 (a) and 1 (b), a pair of aggregate members 7 which are also lateral strength members are vertically provided behind the face plate 6 of the hatch cover H, and a circular boss 8 is provided on the pair of aggregate members 7. Is provided. A rotation shaft 9 is supported between the bosses 8, and the support arm 5 is mounted on the rotation shaft 9. The support arm 5 is formed in a box shape as a whole from the viewpoint of strength, and is formed in a balanced shape including an outer portion 5a and an inner portion 5b with the rotating shaft 9 interposed therebetween. In the balance type, the support arm 5 is configured such that moments around the rotation axis 9 between the outer portion 5a and the inner portion 5b are substantially balanced. In the case of the balance type, the driving power required to operate the support arm 5 is small. In FIG. 1A, the support arm 5
The portion through which the rotating shaft 9 is applied has the maximum depth, and the inner portion 5b from the center of the rotating shaft 9 has its upper surface almost horizontal and its lower surface slightly inclined upward. The inner end extends to a stopper member 10 which is also a vertical strength member orthogonal to the aggregate 7 of the horizontal strength member. The stopper member 10 has a flange 10a at an upper portion thereof, and a wedge-shaped liner 10b on which the support arm 5 is seated is provided on the top surface of the flange 10a. The stopper member 10 serves as a receiving stand when the support arm 5 protrudes as shown in FIG. 1 (a), and also comes into contact with the support arm 5 during storage as shown in FIG. This is useful for keeping the storage posture of the arm 5 constant.

Flanges 11 are provided at both ends of the rotating shaft 9,
The flange 11 and the rotating shaft 9 are bolted up and both are integrally fixed. Extension shaft 9 extending horizontally from one flange 11
A drive arm 12 is provided at a right angle at a free end of a. The rod end 13a and the trunk end 13b of the drive cylinder 13 are detachably pivotally attached to the drive arm 12 and the hatch cover H side. As shown in FIG. 4, when the drive cylinder 13 fails, the turnbuckle 14 to be removed and provided as backup means is provided between the drive arm 12 and the hatch cover H in place of the drive cylinder 13 when the drive cylinder 13 fails. This is because the support arm 5 can be fixed.

As shown in FIG. 1 (a), the support arm 5 is formed so as to project toward the recess 4 when the drive cylinder 13 is shortened. The cylinder 13 and the cylinder 13 are formed in a U-shape. For this reason, a large rotating moment for raising the support arm 5 from the retracted state of FIG. 3 can be obtained, and the replacement with the turnbuckle 14 can be easily performed. Further, as shown in FIG. 3, the drive cylinder 13 is extended to extend the rod end 13a.
By rotating the drive arm 12 to a position where it does not protrude from the hatch cover H, the support arm 5 also rotates counterclockwise so that the support arm 5 is stored in contact with the back surface of the stopper member 10 on the back surface of the hatch cover H. It has become.

Although not shown, the drive cylinders 13 arranged at the four corners of the middle deck hatch cover H have pressure pipes (compressed air pipes which normally do not affect cargo even if they leak) are used.
Are installed and connected to the back surface of the hatch cover.
At the connection of the pressure pipe, a portable control stand equipped with a switching control valve can be connected to a pressure supply source on land or for ships (FIG. 5). When the operator switches the switching control valve, the drive cylinder is extended or shortened at the same time, and the four support arms are simultaneously moved to the housed state or the projected state to switch the position.

Note that, as shown in FIG.
A gap δ is provided between the front end of the recess and the partition wall 3a of the recess 4 in consideration of the deformation of the ship-side partition wall 3, so that movement in the boat width direction is allowed. As shown in FIG. 2, one of the four recesses 4 of the ship-side bulkhead on which the four support arms of one hatch cover are supported is provided on one of the front and rear sides of the ship.
The support arm 5 is sandwiched by a guide member 15 provided in the first arm. Therefore, the movement of the hatch cover in the front-rear direction with respect to pitching during the voyage of the ship is restricted.

As shown in FIG. 5, the wall surface 3b of the ship bulkhead 3
A guide line 16 is marked (painted) in the vertical direction with the recess 4 interposed therebetween, and each level is leveled at a position substantially coincident with the height of the upper end of the recess 4 or slightly above the height. The line 17 is horizontally marked for a fixed length.
The guide line 16 extends to the lowest level line 17a. The distance between one guide line 16 and another guide line 16 substantially corresponds to the length of the hatch cover H (length in the ship length direction). That is, the guide wire 16 is drawn between the hatch covers.

Here, a method of setting (installing) the middle deck hatch cover on one step in the hold will be described with reference to FIGS.

As shown in FIG. 5, the middle deck hatch cover H is moved to the upper part of the suspended hold at four points by a loading crane on land or on a ship. A guy rope 19 is pre-engaged with an engagement hardware 18 at a corner of the hatch cover H, and an air hose 20 is connected to a coupler (joint) 19 provided on the hatch cover H. A portable control stand 21 having a manual switching valve is connected to the air hose 20. While two workers operate the guy rope 19 to restrict the runout of the hatch cover H, the two workers
It is brought between the guide lines 16 of the strip. Since the guide line 16 is displayed up to the top of the hatch combing 22, the hatch cover H can be easily positioned based on the guide line 16. As a result, the hatch cover H is lowered so that the corners of the hatch cover H are along the guide lines 16 drawn vertically on the wall surface of the ship-side bulkhead 3.

[0021] Two of the workers are hatch hatch combing 2
2 and pull the guy rope 19 to adjust so that the position of the hatch cover H does not swing. Hatch cover H
The switch valve of the control stand 21 is operated at the stage when one worker confirms that has arrived at the position of the level line 16. The level line 17 is for measuring the timing of operating the drive cylinder 13 (FIG. 1A) to operate the support arm 5. By operating the switching valve, the rod of the drive cylinder 13 is shortened from the state shown in FIG. 3 to the state shown in FIG. 1A, and the support arm 5 is raised horizontally as shown in FIG. When the hatch cover H reaches the vicinity of the center, the hatch cover H is completely protruded, and the support arm 5 is seated on the liner table 23 of the recess 4. At this time, the inner end of the support arm 5 is seated on the wedge-shaped receiving base 10b at the top of the stopper member 10 of the hatch cover.

When the hatch cover H thus installed is to be carried out from the hold, the switching valve is operated in the opposite direction to the above while lifting the hatch cover H with a crane to extend the drive cylinder 13. When the hatch cover H passes through the upper end of the recess 4 as shown in FIG. 6B, the support arm 5 comes into contact with the stopper member 10 to be in the retracted posture. To do. Then, raise the hatch cover H along the guide line 16,
Take it offboard and move it to a designated storage location.

[0023]

The present invention is embodied in the form described above and has the following effects. Easily protruding support arm by extending / shortening drive cylinder /
The storage state can be formed. Since the drive means of the support arm is provided on the hatch cover side, when the middle deck hatch cover is to be supported at a plurality of levels in the height direction, the support device is more difficult than when the hatch cover support device is provided in the hull side recess. Can be greatly reduced, and drive equipment including piping and the like can be easily installed at the time of manufacturing the hatch cover, so that the structure of the recess itself on the hull side can be greatly simplified.
At the time of setting, etc., lower the middle deck hatch cover along the guide line and determine the operation of the drive cylinder based on the level line, that is, the start time of the operation of the support arm, etc. The setting work and the like in the partition recess can be facilitated.

[Brief description of the drawings]

FIGS. 1 (a) and 1 (b) are a side view and a plan view of a main part of a support device in a state in which a middle deck hatch cover is supported in a ship-side bulkhead recess.

FIG. 2 is a front view of the recess.

FIG. 3 is a side view of a state where the support arm is stored in the back of a hatch cover.

FIG. 4 is a side view when a turnbuckle serving as backup means is provided instead of a drive cylinder.

FIG. 5 is a perspective view showing the state of the work when setting the middle deck hatch cover in the hold.

FIG. 6 (a) is a side view showing the state when the middle deck hatch cover is set in the recess over time, and FIG. 6 (b) shows the state when the hatch cover is detached from the recess over time. FIG.

FIG. 7 is a cross-sectional view of a hull of, for example, a heavy goods carrier having a wide hold.

[Explanation of symbols]

 3 Ship-side bulkhead 5 Support arm 5a Outer part 5b Inner part 9 Rotating shaft 10 Stopper member 11 Flange 12 Drive arm 13 Drive cylinder 14 Turnbuckle 16 Guide line 17 Level line

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-62-173394 (JP, A) JP-A-63-144907 (JP, U) JP-B-51-31673 (JP, B2) (58) Field (Int.Cl. ⁶ , DB name) B63B 19/16 B63B 19/14

Claims (3)

(57) [Claims] 1. A hatch cover for supporting a middle deck hatch cover via a support arm in a recess formed in a bulkhead side partition partitioning a cargo hold, wherein a rotating shaft is provided on an aggregate of the hatch cover. It is possible to switch between a state in which the support arm is attached to the rotation shaft and protrudes from the hatch cover toward the recess and a storage state in which the drive arm is stored inside the hatch cover, and one end of the drive arm is attached to the rotation shaft. Connect the drive cylinder to the other end, and connect the support arm to the outer part and the inner part
The support arm is formed in a balanced shape, and when the support arm is in a protruding state, the support arm is in contact with the inner portion of the support arm.
Contact and restrict its movement, and
In the state, it abuts on the outer part of the support arm and regulates its movement
A hatch cover, and a guide member for holding the support arm in the recess . 2. The middle deck hatch cover support device according to claim 1, wherein both the drive arm and the drive cylinder are provided so as to form a cross shape when the support arm protrudes. 3. Each end of the drive cylinder is detachably provided on the drive arm side and the hatch cover side, respectively.
3. The middle deck hatch cover device according to claim 1 , wherein a turnbuckle can be replaced when the drive cylinder fails.