JPH0326077Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to an improvement of a dust prevention device for hatch combing of a ship carrying ore, coal, etc.

(Prior art) On carrier ships that carry ore, coal, etc. in bulk in their holds, particles of ore or coal during cargo handling may spill onto the hatch coaming that forms the opening of the hold, staining the deck or causing hatch coaming. This may reduce the seal between the combing and the hatch cover.

For this reason, in these carrier ships, the hatch coamings are covered with a sheet or the like during cargo handling operations, or the hatch coamings are cleaned before closing the hatch covers after cargo handling operations are completed.

(Problem that the invention aims to solve) However, it is troublesome to cover the hatch coaming with a sheet or clean the hatch coaming every time cargo handling work is carried out, and the effort and time spent on these tasks are not enough to streamline cargo handling work. This had become an inhibiting factor.

SUMMARY OF THE INVENTION In view of the above-mentioned problems, it is an object of the present invention to provide a dustproof device that can automatically protect the hatch combing as the hatch cover opens and closes.

(Means for Solving the Problems) The present invention provides a hatch cover that opens and closes a boat hold by moving horizontally on a hatch coaming provided at the periphery of a hatch opening. A dustproof cover that rotates between the inside of the ship's hold and the upper part of the hatch coaming using the fulcrum is installed along the hatch coaming, and the rotary member that transmits rotational force to this rotating shaft is placed in a position that does not interfere with the movement of the hatch coaming. The hatch cover is provided with a protrusion parallel to the moving direction of the hatch cover, and the hatch cover is provided with a protrusion that contacts and rotates the rotating member when the distal end of the moving hatch cover passes through the hatch coaming on the proximal end side.

(Function) When the hatch cover is opened, as the hatch cover moves backward and passes through the hatch combing on the proximal end side, the protrusion formed on the hatch cover comes into contact with the rotating member and rotates it, and the dust-proof cover is attached via the rotating shaft. Rotate above the coaming. Also,
When the hatch cover is closed, this protrusion contacts the drive member from the opposite direction and rotates it, thereby rotating the dust cover on the hatch coaming into the hold.

(Example) Embodiments of the present invention are shown in FIGS. 1 to 5.

In FIG. 1, reference numeral 1 denotes a hatch coaming provided around the opening of the hold 2, on which a double-opening hatch cover 3 having running wheels 20 on the sides as shown in FIG. 3 is placed. A horizontal rotary shaft 5 is rotatably held inside the hatch coaming 1 via a bearing 4, and the base end of a dustproof cover 6 that covers the top of the hatch coaming 2 is fixed to the rotary shaft 5, and the A protector 11 is provided to protrude from the wall surface of the hatch combing 1 in parallel with. This protector 11 is formed at a height that projects inward from the rotating shaft 5. A bevel gear 7 as shown in FIG. 4 is fixed to the end of the rotating shaft 5, and meshes with the bevel gear 7 of the rotating shaft 5 held in the same way by the hatch coaming 1 in the right angle direction. Further, the rotating shaft 5 held by the hatch coaming 1 on the base end side of the hatch cover 3 is made to protrude further laterally from the bevel gear 7 as shown in FIG. 4, and a gear 8 as a rotating member is fixed to this protruding end. The gear 8 is formed to have a diameter sufficiently larger than that of the bevel gear 7, and its upper portion freely projects upwardly from a notch in the hatch coaming 1 formed on the outside of the hatch cover 3, as shown in FIG. Second
As shown in the figure, the hatch coaming 1 is provided with a rotating system consisting of the gear 8 and two rotating shafts 5 at four locations in total, centered around each corner. In addition, each rotating shaft 5
The dustproof cover 6 that is fixed to the dustproof cover 6 has a length that does not interfere with another adjacent dustproof cover 6, and the bevel gear 7
The upper part is the hatch combing 1 as shown in Figure 4.
Cover with fixed cover 9 attached to.

On the other hand, on both sides of the tip of the hatch cover 3, a kicker 1 is provided as a protrusion that rotationally drives these gears 8.
0 is provided protrudingly. The kicker 10 is provided at a position slightly lower than the upper end of the gear 8 so as to contact the gear 8 and rotate it when the hatch cover 3 passes over the hatch coaming 1 on the proximal end side. In addition, 12 is the running wheel 2 of the hatch cover 3.
This is a rail that guides 0.

Next, the effect will be explained.

When the hatch cover 3 is closed, the dust cover 6
is stored with its tip facing inside the hold 2, as shown by the dashed line in FIG. However, when the hatch cover 3 opens in the directions shown by the arrows in FIG. Rotate as shown in Figure 5. As a result, the rotating shaft 5 to which the gear 8 is fixed and the rotating shaft 5 adjacent thereto via the bevel gear 7 rotate in the directions indicated by the arrows in FIG. 4, and the base ends are fixed to the rotating shafts 5. The dustproof cover 6 rotates above the hatch coaming 1 as shown by the solid line in FIG.

Cargo handling work is carried out in this state, but the powder that spills onto the hatch coaming 1 during the work collides with the dustproof cover 6 and falls into the hold 2.
These powder particles will not be scattered on the hatch coaming 1 or the surrounding deck. Also, even if the wire rope that suspends the bucket is swung around during cargo handling,
Since the protector 11 protruding inside the hold 2 prevents the wire rope from coming into contact with the dustproof cover 6, there is little risk that the dustproof cover 6 will be damaged.

On the other hand, when the hatch cover 3 is closed, as the tip of the hatch cover 3 passes above the hatch coaming 1 on the proximal end side, the kicker 10 contacts the gear 8 from the rear and rotates it in the opposite direction. As a result, each rotating shaft 5 rotates in the opposite direction to when the hatch cover 3 is opened, and the dustproof cover 6 is rotated from above the hatch coaming 1 and stored inside the hold 2 again. Therefore, there is no possibility that the dustproof cover 6 will interfere with the hatch cover 3 as it moves forward. Further, after the hatch cover 3 travels to the closed position, it is placed on the hatch coaming 1 that was protected during cargo handling, so it has good adhesion to the hatch coaming 1 and completely seals the hold 2.

(Effect of the invention) As described above, in the present invention, when the hatch cover opens, the protrusion provided on the hatch cover moves the rotating member to rotate the dust cover stored in the hold above the hatch coaming, while the hatch cover During the closing operation, this protrusion moves the rotating member in the opposite direction and rotates the dust-proof cover on the hatch coaming into the hold, so the dust-proof treatment for the hatch coaming required for cargo handling operations is automatically performed in conjunction with the opening/closing operation of the hatch coaming. can be done. Therefore,
There is no need to spend time and effort to protect and clean the hatch combing, and the workload associated with cargo handling is greatly reduced.

[Brief explanation of drawings]

Fig. 1 is a sectional view of essential parts of a hatch combing showing an embodiment of the present invention, Fig. 2 is a plan view of the hatch combing, Fig. 3 is a side view of the hatch cover, and Fig. 4 is a hatch showing the drive structure of the dustproof cover. FIG. 5 is a plan view of the main part of the combing and a side view of the main part. 1... Hatchcombing, 2... Ship hold, 3...
Hatch cover, 5...Rotating shaft, 6...Dust cover, 8...Gear, 10...Kitsuka.

Claims (1)

[Scope of utility model registration request] In a hatch cover that opens and closes a ship's hold by moving horizontally on a hatch coaming provided at the periphery of the ship's hold opening, the hatch cover is moved between the inside of the ship's hold and the top of the hatch coaming using a rotating shaft supported horizontally inside the hatch coaming as a fulcrum. A rotating dust-proof cover is installed along the hatch coaming, and a rotating member that transmits rotational force to the rotating shaft is provided parallel to the direction of movement of the hatch cover at a position that does not interfere with the movement of the hatch cover. 1. A dustproof device for a hatch coaming, characterized in that a hatch cover is provided with a protrusion that abuts on and rotates the rotary member when it passes through the proximal hatch coaming.