JP2500238Y2 - Shukaku device - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a side ladder device for a ship, and more particularly to a side ladder device in which a gang board which is an auxiliary side ladder is incorporated in a main side ladder.

[0002]

2. Description of the Related Art Conventionally, when a port ladder is installed on a ship-side skin with a narrow ship such as a stern as shown in FIG. A gang board, which is an auxiliary deck, is needed to secure the safe embarkation and disembarkation of the ship.

Therefore, conventionally, as shown in FIG.
The gang board 22 separate from 1 is hung by using the davit 23 or the like provided on the deck H ₀ , and the winch 23a is operated to lower the gang board 22. 22 is attached to the lower landing 24,
After that, it was installed by manually tilting it toward the quay WF.

In this conventional example, the gang board 22 is also used.
Since they are not integrally incorporated in the main deck 21, it is necessary to perform operations such as hoisting and lowering the gang board 22 and removing and carrying the gang board 22 to another place for storage.

Therefore, a system in which a gang board as shown in FIG. 6 is incorporated in the main deck is the actual Kaihei 2-8769.
No. 6 is proposed. According to this device, the turntable 25 for the gang board 22 which overlaps with the lower landing 24 provided on the main deck 21 and can rotate relatively thereto is separately provided, and at the time of storage, on the deck H ₀ . In addition, another storage device 22A is arranged in a direction perpendicular to the storage direction of the main deck 21.

[0006]

However, in the sideboard device disclosed in this publication, the turntable 25 for the gang board 22 is superposed on the lower landing 24 provided on the main sideboard 21 and can be rotated relative thereto. Since it is provided separately, there is a drawback that it is structurally complicated and becomes heavy.

Originally, the lower landing 22 is in an unstable state due to the shaking of the ship and wind waves, and the worker rides on such an unstable lower landing 24 as shown by the imaginary line in FIG.
The standing gang board 22 must be installed by turning the turntable 25 by winch operation to displace the gang board 22 from the A position to the B position and then tilting the gang board 22 further toward the quay WF side. Not safe work.

Since the gang board 22 itself is stored in a direction different from that of the main deck 21, as shown in FIG. 5, a storage device 22A on the deck and its storage space are required separately.

In view of the above-mentioned problems of the prior art, the present invention simplifies the structure by connecting the gang board directly to the lower landing of the main pier, so that the gang board can be installed easily and safely. It is an object of the present invention to provide the above-mentioned ladder system.

[0010]

In order to achieve the above object, the port ladder device of the present invention is a main port ladder having a lower landing pivotally attached to a ladder member, and a gang board is pivotally attached to a side surface of the lower landing. The gang board can be stored along the main ladder, and the pivot shaft of the gang board is set at a position deviated from the load acting line of the gang board in the upright state opposite to the quay side. .

[0011]

In the above structure, by rotating the lower landing to raise it in a horizontal state, the gang board is also rotated together and put into a retracted state along the ladder member. In addition, the gangboard in the retracted position also becomes upright by tilting the lower landing, and in this state, due to the positional relationship between the load acting line of the gangboard and the hinge pin, a moment acts in the direction of falling toward the quay side, and the gangboard naturally moves. It is installed by falling down to the quay side. Therefore, the gang board has a tackle 1
By taking Step 4 (Fig. 3), all operations from the storage position to the quay installation can be performed from the deck of the ship.

[0012]

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

FIG. 1 is a perspective view of an essential part showing a state in which a gang board 1 as an auxiliary pier is stored along a main pier 2. FIG. 2 is a load acting line and a lower landing 6 of the gang board 1 in an upright state. FIG. 6 is an enlarged view of a main part showing a hinge connection positional relationship with and. The main deck 2 itself has a conventionally well-known structure, and as shown in FIG. 4, an upper landing 4 which is a turntable rotatably arranged at the tip of a support base 3, and is pivotally attached to this upper landing 4. It is mainly composed of a ladder member 5 connected in series and a lower landing 6 pivotally attached to the ladder member 5. A step 7 is provided on the ladder member 5 (FIG. 3), and a hand rail 8 is provided upright. The gang board 1 is stored and held along the handrail 8.

The gang board 1 is pivotally attached to the lower landing 6. That is, as shown in FIG. 2, the bracket 1a is fixed to the base end portion of the gangboard 1, and the bracket 6a is provided on the lower landing 6 as well. The gang board 1 is pivotally supported on the lower landing 6 side. Moreover, as shown in FIG. 2, the load line W of the gangboard 1 in the upright state and the position of the hinge pin 9 serving as the pivot shaft are separated by the distance L.
It is deviated to the side opposite to F. Therefore, the gang board 1 can be freely rotated (raised) at the hinge portion, and when the gang board 1 is in the standing state, a moment WL that tends to tilt naturally is generated on the quay side. Further, a stopper 10 is interposed between the bracket 1a and the side plate 6b of the lower landing 6 so that the gang board 1 in the upright state surely falls to the quay WF side and does not fall to the hull side.

The main board 2 is stored at a position closer to the port side when it is stored, as in the conventional case, and when used, it is swung out by a davit and the winch is lowered downward along the port side by operation. At this time, the gang board is also lowered together with the gang board at the storage position along the main ladder as shown in FIG.

The procedure for installing the gangboard 1 having such a structure on the quay WF is as follows.

As shown in FIG. 3, the entire davit 11 stored in a position near the port H is slid on the base 12 so that the davit 11 protrudes from the port H, and then a winch (not shown).
Is operated to unwind the hanging wire 13, and the main pier 2 is gradually lowered to be held in a downward inclined state as shown by the solid line in FIG. As shown in FIG. 1, the gang board 1 is in the storage position along the main pier 2, and the gang board 1 is suspended from the davit 11 at the tip of the gang board 1 (fixed pulley 1
4a, a moving pulley 14b, and a rope 14c wound around this
Is attached in advance, and the operator M on the deck H ₀ holds and holds the tip of the rope 14c of the tackle 14 in advance. Note that the gang board 1 is released from the lashing to the main deck 2 while it is on the deck H ₀ .

When the main deck 2 is lowered to the position shown in FIG. 4, the gang board 1 is in the storage position a. Therefore, as shown in FIG. 3, when the worker M on the deck H ₀ pulls the tip of the rope 14c of the tackle 14, the horizontal force thereof causes the lower landing 6 to rotate to the horizontal position, so that the gang board 1 is also in the a position. To the vertical standing state from the b position (FIG. 3). Next, when the worker M gradually loosens the tackle 14, as described above, the position of the hinge pin 9 as the pivot shaft of the gang board 1 is changed from the load acting line W to the quay wall W.
Since it is deviated by a distance L to the side opposite to F, the moment WL naturally causes it to fall toward the quay WF side. Finally, as shown in FIG. 1 or FIG. 3 (imaginary line), the tip portion of the gangboard 1 (where the ground roller R is attached) is grounded to the quay WF, and the installation work is completed.

When the gang board 1 and the main deck 2 are stowed, the procedure is reversed. However, when the gang board 1 is displaced from the b position to the stow position a, the davit 11 of the tackle 14 is moved as necessary. Change the position of the hanging point at.

Since the gangboard 1 can be operated on the deck H _{0 in} this manner, it can be operated more safely and easily than the operation on the unstable lower landing 6,
You can work safely even when the ship is upset or in strong wind.

[0021]

As described above, according to the present invention,
The following effects can be obtained.

(A) Since the installation work of the gang board on the quay and the storage work can be configured to be operated from the deck, the work is safe and easy.

(B) Since the gang board is stored along the main ladder, the storage device and the storage space on the deck of the gang board are not required.

(C) When descending the main ladder, the gangboard is stored along the main ladder so that the gangboard can be operated in a stable state and the work safety is improved.

(D) Since the gang board is directly pivotally attached to the lower landing of the main deck, it is not necessary to superpose the turntable, and the structure is simplified.

[Brief description of drawings]

FIG. 1 is a perspective view of an essential part showing a state in which a gang board serving as an auxiliary deck is stored along a main deck.

FIG. 2 is an enlarged view of a main part showing a hinge connection positional relationship between a load acting line of a gangboard in a standing state and a lower landing.

FIG. 3 is a diagram showing how to handle a gangboard from above the deck.

FIG. 4 is a perspective view showing a procedure for installing a gangboard on a quay.

FIG. 5 is a perspective view showing a conventional installation work of an independent gang board on a quay.

FIG. 6 is a perspective view showing a work of installing a gangboard of a system incorporated in a conventional main deck on a quay.

[Explanation of symbols]

1 ... Gang board 2 ... main Gentei 5 ... ladder member 6 ... lower landings 9 ... hinge pin (pivot shaft) 10 ... stopper 14 ... tackle M ... operator H ... broadside H ₀ ... deck WF ... quay

Claims (1)

(57) [Scope of utility model registration request] 1. A main port ladder having a lower landing that is pivotally attached to a ladder member, and a gang board is pivotally attached to a side surface of the lower landing so that the gang board can be stored along the main port and the gang. A ladder system characterized in that the pivot axis of the board is set at a position deviated from the load line of the standing gang board opposite to the quay side.