JP2514404B2 - Canvas hatch cover - Google Patents

Description

Detailed Description of the Invention [Industrial applications]

This invention is a simplified hatch cover used for ships and barges, etc., in which a hatch beam made of steel pipe is slid on a rail on the hatch coaming side, a canvas is attached to the hatch beam, and a chain type drive etc. A canvas hatch cover that opens and closes with a simple drive.

[Prior art]

Conventionally, this type of hatch cover has been shown in FIG.
Explaining with reference to FIG. 11, a rectangular hatch 31 is provided on the deck 30 of the hull in the longitudinal direction of the hull, and a hatch coaming 32 is provided upright around the hatch 31. A plurality of hatch beams 34 for supporting the canvas 33 are provided on the hatch coaming 32, rollers 35 are provided on both sides of the hatch coaming 32, and a chain type drive device 38 is used for opening and closing. The base of the hatch beam 34 has a total of four rollers 35 on one side, two in the front-rear direction and two in the left-right direction, and supports the hatch beam 34. When the roller 35 is opened and closed, both sides of the roller 35 slide in the groove of the grooved steel of the guide rail 36. roller
35 are provided at regular intervals in the front-rear direction and at regular intervals in the left-right direction in order to prevent falling when sliding, and the hatch beam 34 is supported by four rollers 35 on each side. The hatch beams 34 are connected to the adjacent hatch beams 34 by a chain 37 at regular intervals, and when the hatch 31 is closed, the hatch beams 34 are arranged at regular intervals as shown in FIG. Further, when opened, as shown in FIG. 10, the chain type drive device 38 is stored in the front and rear direction of the hatch combing 32.

[Problems to be Solved by the Invention]

As described in the prior art, in order to prevent the stability of the hatch beam, that is, to prevent it from falling, four rollers are provided at the base of the hatch beam. Due to its long length, it requires a long storage space for the hatch beam when the hatch is opened. Further, also in the left-right direction, the width of the combing side is widened by providing two rollers on one side of the board, so-called two rows, and the rectangular hatch size is limited in the front-rear direction and the left-right direction. Further, the rollers are provided at regular intervals in the front-rear direction and the left-right direction in order to prevent the fall, but this is not sufficient, and they often fall down to hinder the cargo handling.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the present invention adopts a letter-shaped base of the hatch beam to maintain stability, shorten the hatch beam storage space when the hatch is opened, and ensure the maximum hatch size. Is what you are trying to do.

[Action]

With the above configuration, when the hatch beam slides, stability in the front-back direction is increased, smoothness of operation is increased, and
Even when the hatch beam is retracted, the front and rear directions of the hatch beam are stored with the bases of the hatch beams overlapping each other.

【Example】

Examples will be described with reference to the drawings. 1 to 6, in the canvas hatch cover of the present invention, a rectangular hatch 2 is provided on the deck 1 of the hull in the longitudinal direction of the hull, and a hatch combing 3 is provided upright around the hatch 2. On the hatch combing 3,
Several hatch beams 5 are provided to support the canvas 4, and rollers 6 are slid on both sides of the hatch coaming 3. The hatch beam 5 is designed to be opened and closed by a chain type drive device 7,
Each hatch beam 5 is connected by a chain 10, and as shown in FIG. 4, when the most advanced hatch beam 5'is pulled by the chain type drive device 7 on both sides, the hatch beam 5 is pulled out at regular intervals. The hatch 2 is closed. Further, as shown in FIG. 5, when the most advanced hatch beam 5'is pulled back by the chain type drive device 7 on both sides, the hatch beams 5 are collected one by one, and the hatch 2 is opened. Becomes As shown in FIG. 6, a hatch beam 5 for supporting the canvas 4 is provided on the hatch coaming 3, and two rollers 6 are axially attached to each of the right and left sides of the base of the hatch beam 5, and one side is triangular. It is received by the groove rail 8 and the other side is received by the flat rail 9. More specifically, referring to FIG. 1, FIG. 2 and FIG. 3, the hatch beam 5 has a letter-shaped base portion, and a roller 6 is axially attached to each of the lower portions thereof. The port receives the roller 6 by the upper and lower rails 8 of the triangular groove welded to the stiffener 12 of the hatch coaming 3, and the other side is the upper and lower rails 9 of the groove-shaped steel welded to the stiffener 12 of the hatch coaming 3. I am supposed to receive it. Also, at the bottom of the hatch beam 5, a chain 10 of a certain length is
Is connected to the adjacent hatch beam 5 by the so as to interlock. Furthermore, at the bottom of the hatch beam 5,
Fall prevention metal fittings 11 are provided on both sides to prevent lifting.

【The invention's effect】

Since the present invention is configured as described above, it has the following effects. The hatch beam's base has a letter-shaped design, which improves stability in the front-back direction, and is equipped with a fall-prevention metal fitting to provide fall-prevention measures in case of emergency. In addition, since the hatch beam base is a letter shape, it overlaps during storage to reduce the storage space in the front-back direction, and since the rollers are installed vertically, it is compact in the left-right direction and maximizes the hatch size. Can be secured. Furthermore, those who receive the roller on the one-sided triangular groove rail are designed to adjust the trajectory of the hatch beam in a straight line when sliding, and those who receive the roller on the grooved steel rails use hatch coaming for cargo freight. When bending due to weight, the roller has the allowance to shift to the left and right, which makes the sliding smooth.

[Brief description of drawings]

FIG. 1 is a schematic side view of the canvas hatch cover of the present invention. FIG. 2 is a schematic enlarged sectional view of the canvas hatch cover of the present invention. FIG. 3 is a schematic enlarged sectional view of the canvas hatch cover of the present invention. FIG. 4 is a side view schematically showing a closed state of the hatch of the canvas hatch cover of the present invention. FIG. 5 is a side view schematically showing the opening state of the hatch of the canvas hatch cover of the present invention. FIG. 6 is a schematic sectional view of the canvas hatch cover of the present invention. FIG. 7 is a schematic side view of a conventional canvas hatch cover. FIG. 8 is a schematic enlarged sectional view of a conventional canvas hatch cover. FIG. 9 is a side view schematically showing a closed state of a hatch of a conventional canvas hatch cover. FIG. 10 is a side view schematically showing an open state of a conventional canvas hatch cover. FIG. 11 is a schematic cross-sectional view of a conventional canvas hatch cover. 1 …… Deck 2 …… Hatch 3 …… Hatch combing 4 …… Canvas 5 …… Hatch beam 6 …… Roller 7 …… Chain type drive device 8 …… Rail 9 …… Rail 10 …… Chain 11 …… Tipping prevention Metal fitting 12 …… Stiffener

Claims (1)

(57) [Claims] 1. A hatch beam 5 has a letter-shaped base portion, and a roller 6 is axially attached to each of the lower portions of the hatch beam 5, and one side is a triangular groove welded to a stiffener 12 of the hatch coaming 3. The canvas hatch cover is characterized in that the roller 6 is received by the two upper and lower rails 8 and the other port is received by the upper and lower two rails 9 of the groove-shaped steel welded to the stiffener 12 of the hatch coaming 3.