JPH0725380A - Hatch cover device - Google Patents

Abstract

PURPOSE:To facilitate and simplify maintenance and inspection, and thereby lower its cost by moving a hatch cover up and down, and fastening it and so on in a simple constitution. CONSTITUTION:The device includes inner wheels 23 and 24 which are installed onto a hatch cover 6 as one set composed of paired wheels at a specified interval in such a way that they cross over the outer cut-out section 13 of a rail 3, a guide wheel 25 provided for the outer position of the hatch cover 6, a guide inclined projection 26 which is provided over a hatch coaming 2 to be equivalent to the guide wheel 25, and is downward inclined inwards to smoothly guide an outer wheel 5 to the outer cut-out section 13 while overcoming the drop of the outer wheel, and an engaging pin 28 projecting to the side face of the inner end section of the hatch coaming 2. Therefore, the device is equipped with a pull-in and push-on means 29 which is engaged with the engaging pin 28, and thereby can pull in the inner end of the hatch cover 6 to an inner lower section, locking fixtures 36 which are installed on the hatch coaming 2 in such a way that a wedge opening is formed outward, and with wedge fittings 37 which are installed on the hatch cover 6 in such a way as to be engaged with the wedge opening when the hatch cover 6 falls in.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hatch cover device provided on a ship.

[0002]

2. Description of the Related Art FIGS. 4 and 5 show an example of a conventional general hatch cover device. Rails 3 are provided in parallel on both upper ends of a hatch coaming 2 provided on a deck 1 of a ship. A pair of hatch covers 6 and 6 capable of traveling by inner wheels 4 and outer wheels 5 provided at side front and rear positions along the rail 3 are provided, and the hatch covers 6 and 6 are arranged endlessly. A driving unit 9 including a chain 7 and a chain driving device 8 is synchronously driven to open and close the upper side of the hatch combing 2. In the case of FIG. 5, each of the hatch covers 6 and 6 is connected to the position of the chain 7 which is folded back by the wheel 10 and moved in the opposite direction by the drive of the chain drive device 8 via the connecting tool 17. Reference numeral 11 in the figure denotes a stopper provided at the end of the rail 3.

Each of the hatch covers 6 and 6 is dropped at the inner closed position so that the hatch combing 2 can be performed.
In order to sit on top and close, the inner notch 12 and the outer notch 12 on the rail 3 so that the inner wheels 4 and the outer wheels 5 fall when the hatch covers 6, 6 come to the closed position. The cutout 13 is formed.

At this time, it is necessary to raise the hatch covers 6 and 6 again from the closed position where the hatch covers 6 are dropped to open them. For this reason, the inner cutout 12 and the outer cutout 1 are formed.
An elevator rail device 16 having a short movable rail 15 which is vertically moved by a jack-up cylinder 14 as shown in FIGS.

Further, in order to restrain the hatch covers 6 and 6 to the hatch coaming 2 at the closed position where the hatch covers 6 and 6 are dropped, as shown in FIG. A plurality of brackets 18 and a fastening device 22 including bolts 20 and nuts 21 for fastening and fixing the fixed brackets 18 to the hatch coaming 2 via the shock absorbers 19 are provided in the circumferential direction of the hatch cover 6.

In the conventional hatch cover device described above, a case will be described in which the hatch covers 6 and 6 are closed from the state where the hatch covers 6 are open.

When the hatch covers 6 and 6 are moved outward and the hatch coaming 2 is open, the movable rail 15 of the elevating rail device 16 is raised and the rail 3 is moved as shown in FIG.
The hatch covers 6 and 6 are at the same height position as the hatch covers 6 and 6 are free to travel, and the tightening device 22 is in the unfastened state as shown in FIG.

From this state, the driving unit 9 is driven to move the hatch covers 6 and 6 inward simultaneously so as to approach each other, and stop at the closed position close to each other. At this time, the inner wheels 4 and the outer wheels 5 are located on the movable rails 15, respectively.

Subsequently, the jack-up cylinder 14 is reduced to lower the movable rails 15, and the hatch cover 6,
Seat 6 on hatch coaming 2.

Next, as shown in FIG.
The upper ends of the bolts 20 are engaged with the fixing brackets 18 and the nuts 21 are tightened to fix the hatch covers 6 and 6 on the hatch coaming 2, thereby ending the closing. When opening the hatch covers 6 and 6, the procedure is reversed.

[0011]

However, the conventional hatch cover device has the following problems.

In order to move the hatch covers 6 and 6 up and down,
Since each of the inner cutout 12 and the outer cutout 13 of the rail 3 has a structure for moving the movable rail 15 up and down, the clearance of the sliding portion increases due to wear and rust. When the movable rail 15 is lifted, it becomes difficult to align with the rail 3 and the wheels 4 and 5 ride on the rail 3 or the movable rail 15 and the height changes to the specified height, or the cause of wheel loss It was.

Further, the elevator rail devices 16 require a total of eight for each of the hatch covers 6 and 6, and there is a problem in that maintenance and inspection are difficult and the cost is high. It was

The tightening device 22 has eight hatch covers 6 and 6 respectively.
Although more than one set is provided, there is a problem that it requires a great deal of labor and time to manually operate the tightening / releasing. Further, a method in which the operation of each of the tightening devices 22 is automatically performed has also been adopted, but a driving device such as a hydraulic cylinder is required, which is expensive, and further, Oil leaks and maintenance and inspection of sliding parts take time and labor, and a lock mechanism is required, which further increases the cost. Also, oil leaks in the drive parts and locking of the hatch cover due to the shaking of the ship locks it. There was a problem in that it would come off.

The present invention has been made in view of the above-mentioned problems of the prior art, and makes it possible to raise and lower and tighten the hatch cover reliably with a simple structure to simplify maintenance and simplification and reduce cost. An object of the present invention is to provide a hatch cover device designed as described above.

[0016]

SUMMARY OF THE INVENTION The present invention is arranged such that inner wheels and outer wheels provided at front and rear side portions along a rail provided on both sides of a hatch coaming can respectively travel.
A pair of hatch covers that are synchronously driven by a driving unit to open and close the hatch combing are provided, and each of the hatch covers is provided with an inner cutout portion and an outer cutout portion provided on the rail at an inner closed position. A hatch cover device which is adapted to be seated on a hatch coaming by closing an inner wheel and an outer wheel to close the outer cover, and which is provided at a predetermined interval in the front and rear direction so as to straddle the outer notch. A set of two inner wheels, a guide wheel provided at an outer position of the hatch cover, and a guide wheel provided on the hatch coaming corresponding to the guide wheel, the outer wheel being provided to the outer cutout portion. A guide slanted projection formed in a downward slope toward the inside so as to smoothly guide the drop, an engagement pin projecting to the inner end side surface of the hatch coaming, and an engagement pin engaged with the engagement pin. Huh A retractable push-out device capable of retracting the inner end of the cover to the lower inner side, a locking device attached to the hatch coaming so as to form a wedge opening toward the outside, and the wedge opening to the wedge opening when the hatch cover is dropped. And a wedge metal member attached to the hatch cover so as to be engaged with the hatch cover device.

[0017]

When the hatch cover is closed on the hatch combing, the driving unit is driven to move the hatch covers inward along the rails. At this time, the inner wheel needs to pass through the outer cutout portion, but since the inner wheel is composed of a pair of wheels having a required front and rear spacing,
Can pass through the outer notch without any support.

When the respective hatch covers come close to each other and the outer wheels come into contact with the outer notches, the guide wheels are located at the guide inclined protrusions, and the hooks provided at the inner end of the hatch cover are provided. The dowel pin is in the position to engage the retracting and pushing device.

Therefore, when the pull-in operation is performed by the pull-in / push-out device from this state, the inner end of the hatch cover is moved from the outer upper part to the inner lower part via the engaging pin, and the outer end of the hatch cover is moved. The guide wheel descends inwardly along the guide inclined projection, the outer wheel falls into the outer notch, and the hatch cover is seated on the hatch coaming.

When the hatch cover falls,
The wedge metal fitting attached to the hatch cover engages with the wedge opening of the locking tool attached to the hatch combing, and the hatch cover is securely closed in the state in which the hatch combing is closed by the pulling action to the lower inside by the pull-in push-out device. Be bound by.

[0021]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an embodiment of the present invention, and the same parts as those in FIGS. 4 and 5 are designated by the same reference numerals to avoid duplication of description.

As shown in FIG. 1, an inner cutout 12 and an outer cutout 13 are provided for dropping the hatch covers 6 and 6 onto a rail 3 for guiding the travel of the hatch covers 6 and 6 to be seated on the hatch coaming 2. And one outer wheel 5 corresponding to the outer notch 13 is provided on the side of the hatch covers 6 and 6, and corresponds to the inner notch 12 and the outer A pair of inner wheels 23 provided at the front and rear with a distance longer than the length of the outer notch 13 so that the rail 3 can travel on the rail 3 without falling into the notch 13,
24 are provided.

A guide wheel 25 is attached to the outer end positions of the hatch covers 6 and 6, and the guide wheel 25
Corresponding to the above, a guide slanted projection 26 is formed on the hatch coaming 2 which is formed with a downward slope toward the inside so as to smoothly guide the outer wheel 5 to fall into the outer notch 13. The configuration of the guide wheel 25 and the guide inclined protrusion 26 is as follows.
The hatch covers 6 and 6 are provided at a plurality of positions in the width direction of the outer ends.

As shown in FIG. 2, an engaging pin 28 supported by a bracket 27 is provided on the side surface of the inner end of the hatch coaming 2, and the engaging pin 28 is engaged with the engaging pin 28. A retractable push-out device 29 is provided which is adapted to move the inner ends of the hatch covers 6, 6 between an outer upper position and an inner lower position.

The pull-in / push-out device 29 includes a sector gear 31 rotatably attached to the hatch coaming 2 below the inner ends of the hatch covers 6 and 6 through a pin 30 and both sector gears 31. A hydraulic motor 33 for rotating the motor through a worm 32, and each sector gear 3
1. Engagement recess 3 attached to 1 to receive the engagement pin 28
4 and.

Further, as shown in FIG. 3, locking members 36 which form a wedge opening 35 toward the outside are attached to a plurality of positions around the hatch covers 6 and 6 in the hatch coaming 2 and the hatch is provided. A wedge metal piece 37, which is adapted to engage with each wedge opening 35 when the covers 6 and 6 are dropped into the inner lower part, is attached to the hatch covers 6 and 6 via a pin 38. The wedge metal fitting 37 is provided with an L-shaped arm 37a, and an end portion of the arm 37a is supported by a mounting base 43 fixed to the hatch covers 6 and 6 by a bolt 41 and a nut 42 via a washer 39 and a cushion material 40. ing.

Next, the operation of the hatch cover device will be described.

The hatch covers 6 and 6 are hatch combing 2
When closing the hatch combing 2 from the state in which the top is opened, the driving unit 9 of FIG. 4 is driven to move the hatch covers 6 and 6 inward along the rails 3. At this time, since the inner wheels 23, 24 have a set of two pieces having a required front and rear spacing, the outer cutout portion 1
It is possible to smoothly pass over the outer notch 13 and move inward without falling into 3.

When the hatch covers 6 and 6 come close to each other and the outer wheel 5 reaches the outer notch 13, the guide wheel 25 comes to be located on the guide inclined projection 26. The engagement pin 28 provided at the inner ends of the hatch covers 6 and 6 comes to a position where it engages with the engagement recess 34 of the pull-in / push-out device 29.

Therefore, when the pull-in / push-out device 29 is driven from this state to rotate the sector gear 31, the inner ends of the hatch covers 6, 6 are moved from the outer upper part to the inner lower part via the engaging pin 28. Moved and hatch cover 6,
At the outer end of 6, the guide wheel 25 descends inwardly along the guide inclined projection 26, the outer wheel 5 falls into the outer notch 13, and the hatch covers 6 and 6 are seated on the hatch coaming 2. To be done.

When the hatch covers 6 and 6 fall, the wedge hardware 37 attached to the hatch covers 6 and 6 engages with the wedge opening 35 of the locking tool 36 attached to the hatch coaming 2 from the direction of the arrow, and The action of the engaging recess 34 of the pull-in / push-out device 29 toward the inner lower part causes the wedge to be bited, so that the hatch covers 6 and 6 are securely restrained in a state in which the hatch coaming 2 is closed.

According to the above structure, the conventional lifting rail device can be eliminated altogether. Therefore, the simplification of the structure facilitates maintenance and inspection, and the cost can be reduced, and the hatch cover 6 can be used. Since the hatch covers 6 and 6 are restrained by interlocking with the locking tools 36 and the wedge metal fittings 37 interlocking with the lowering of the inner parts 6 and 6, the special manual or drive type special tightening. Simplification of configuration and operability compared with the method of installing a device with
Maintenance and inspection can be facilitated.

In the above-mentioned embodiment, the drawing-in / extruding device has been exemplified as the rotary drive system having the hydraulic motor, the sector gear and the engaging recess, but the inner end of the hatch cover is inwardly lowered by the cylinder device. The hatch cover may be slanted into the rail, or the rail may be formed with a slanted notch so that the hatch cover can be smoothly dropped and raised, and other aspects of the invention are not deviated. It goes without saying that various changes can be made within the range.

[0035]

According to the hatch cover device of the present invention, the conventional installation of the lifting rail device can be eliminated altogether, and the simplification of the structure facilitates the maintenance and inspection, and reduces the cost. In addition, since the hatch cover is restrained by interlocking it with the dropping of the hatch cover to the lower inside, it is more structured than the conventional manual or drive type special tightening device. In addition, the operability can be simplified and maintenance and inspection can be facilitated, and other excellent effects can be obtained.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

2 is a detailed view of the pull-in / push-out device of FIG. 1. FIG.

FIG. 3 is a detailed view of a configuration in which the hatch cover of FIG. 1 is restrained by hatch coaming.

FIG. 4 is a perspective view showing an example of a conventional hatch cover device.

FIG. 5 is a front view of FIG. 4 viewed from the V direction.

FIG. 6 is a detailed view of the lifting rail device of FIG.

FIG. 7 is a detailed view showing a state where the movable rail of FIG. 6 is lowered.

8 is a perspective view showing the tightening device of FIG. 5. FIG.

[Explanation of symbols]

 2 Hatch combing 3 Rail 5 Outer wheel 6 Hatch cover 9 Driving unit 12 Inner notch 13 Outer notch 23 Inner wheel 24 Inner wheel 25 Guide wheel 26 Guide inclined protrusion 28 Engagement pin 29 Retracting and pushing out device 35 Wedge opening 36 Locking tool 37 Wedge hardware

Claims (1)

[Claims] 1. Opening / closing of hatch combing is provided such that inner wheels and outer wheels provided at front and rear side portions along rails provided on both sides of the hatch combing can respectively travel, and are synchronously driven by a driving unit. Is provided with a pair of hatch covers, and each of the hatch covers is
In the hatch cover device, the inner wheel and the outer wheel are dropped into the inner cutout portion and the outer cutout portion provided on the rail at the inner closed position so as to be seated on the hatch coaming and closed. There is a set of two inner wheels provided at a predetermined distance in the front and rear direction so as to straddle the outer notch, a guide wheel provided at an outer position of the hatch cover, and a guide wheel corresponding to the guide wheel. Provided on the hatch combing,
A guide sloped protrusion that is formed in a downward slope toward the inside so as to smoothly guide the falling of the outer wheel into the outer notch, and an engagement that protrudes to the inner end side surface of the hatch coaming. A pin, a retracting push-out device capable of engaging with the engaging pin and pulling the inner end of the hatch cover to the inner lower part, and a locking device attached to the hatch combing so as to form a wedge opening toward the outside. And a wedge metal member attached to the hatch cover so as to engage with the wedge opening when the hatch cover is dropped.