JP2698736B2 - Port ladder equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a side ladder device, and more particularly, to a ladder or so-called ladder or tarp which is mounted on a passenger ship or the like and is hung over a quay distant from a side of a ship and descends. Things.

[0002]

2. Description of the Related Art When a cargo ship or the like is anchored at a quay, in order for humans to move between the ship and the land, an inclined stair-like ladder mounted on the ship is moved from the shore to the quay. I was hanging over. When anchored on a dedicated quay, such as a regular passenger ship or ferry ship, a dedicated ramp device designed according to the structure of the ship's side and entrance is installed on the land side, and humans enter and exit. However, in the case of a ship moored at various ports or quays, such as a cargo ship, it is necessary to use a port ladder provided on the ship itself to get on and off.

[0003] Even in the same ship, the height from the quay to the ship's side varies greatly depending on conditions such as the structure of the quay, the tide in the harbor, and the draft of the ship. Therefore,
The side ladder device is configured so that the tip side reaching the quay can turn downward with respect to the base end of the side ladder attached to the shore side, so that it can cope with fluctuations in the height between the shore side and the quay side. I have.

[0004]

However, in the conventional sideboard apparatus, if the distance between the side of the ship and the quay is large,
There was a problem that it was difficult to bridge the pier over the quay. In the conventional side ladder device, since the tip side of the side ladder is turned vertically downward from the shore side along the side of the ship, and descends, if the distance from the side of the side to the quay is far, the side ladder does not reach the quay.

[0005] The side of a ship such as an ordinary cargo ship is almost straight at the center in the front-rear direction, but is tapered at the side close to the bow and stern. Therefore, even if the central part on the shore side is anchored close to the quay, there is a large distance between the shore side and the quay at the bow and stern.
In addition, for example, in a cargo ship, since the cargo is mounted on the central portion of the hull, a human settlement is often provided at the bow or stern. Therefore, a side ladder device for humans to enter and exit is also provided near the bow or stern of the accommodation area. If the side ladder device provided at the bow or stern is lowered vertically from the shore side along the ship's side, the side ladder will not reach the quay.

[0006] Therefore, in the conventional side ladder device, a rope is tied to the side ladder, and the rope is pulled from the quay side to draw the tip of the shore side to the quay side. However, in this method, workers must be arranged on the quay side in advance, which is troublesome. Also, since the pier is hung directly above the ship with wires, etc., trying to draw the pier will obliquely suspend the wires in a suspended direction, and the weight of the pier is considerable. The pier cannot be drawn to the quay without applying extreme force. In addition, even if you pull the pier toward the quay side, unless you secure the pier in this state,
The port ladder suspended diagonally by wire tends to return naturally to the side of the ship, and it takes time and effort to fix the port ladder, which is dangerous.

As described above, it is extremely troublesome and troublesome to carry out the descent to the quay distant from the side of the shore with the conventional side ladder, and there has been a demand for improvement. SUMMARY OF THE INVENTION It is an object of the present invention to provide a shore ladder capable of safely, easily and safely descending from a shore to a quay distant from a shore even if the shore ladder is provided at a bow, a stern, or the like.

[0008]

According to a first aspect of the present invention, there is provided a port ladder device mounted on a ship and hanged from a berth to a quay. It is mounted so that it can move forward and backward, and it can be turned horizontally and vertically vertically, and the tip side of the side ladder is suspended by a horizontally swingable swing arm with a wire via a sheave box so as to be able to move up and down freely. The tip of a drive arm for driving the swing arm is attached to the tip side of the swing arm in the length direction in the longitudinal direction so as to be horizontally rotatable,
The base end of the drive arm is horizontally movably mounted along the side of the location of the turning arm on the side of the ship.

The basic structure of the side ladder device may be the same as that of a normal side ladder device mounted on a conventional ship. The port ladder is
When not in use, it is mounted alongside the ship's side on the deck, similar to conventional ladder systems. And when using a side ladder, the base side of the side ladder arranged on the side of the ship,
It can move back and forth between the state where it is on the sideboard deck and the state where it jumps out of the ship. As the mechanism for moving the base end side of the side ladder forward and backward, a normal forward and backward mechanism in various mechanical devices can be adopted. Specifically, for example, a floor plate portion provided on the base end side of the pier is slidably mounted on a rail, and an oil-pneumatic cylinder, a chain mechanism, a winch mechanism, or the like is used, and the base plate portion on the base end side is used. Should be made to advance and retreat on the rail.

[0010] The base end side of the gantry is mounted so as to be capable of horizontal turning and vertical turning downward. As the mechanism for horizontally turning and vertically turning downward on the base end side of the side ladder, a turning mechanism in an ordinary side ladder device or other mechanical devices can be employed, similarly to the above-mentioned advance / retreat mechanism. Specifically, for example, a landing that is different from the floor plate portion may be attached to the tip of the movable floor plate portion so as to be able to turn horizontally, and a port ladder may be attached to the tip of the landing plate so that it can turn vertically.

[0011] The tip end side of the side ladder is suspended from a vertically movable swing arm so as to be able to move up and down. The swivel arm is mounted so as to protrude horizontally from a column disposed on the inner side of the side of the sideboard mounted on the deck, and the tip of the swivel arm horizontally turns from the inside of the ship to the outside of the ship. The swivel arm's swivel range extends from at least about 90 ° when the tip of the swivel arm jumps out of the ship from a state that is almost parallel to the side of the ship or the sideboard on the deck when the tip of the swivel arm is inside the ship. If possible. As a specific structure of the swing arm, a normal swing arm structure similar to that of a conventional ship-mounted swing boom or crane is employed.

A preferred mechanism for driving the turning arm will be described. A drive arm whose tip is rotatably supported on the tip side of the turning arm is used. The base end of the drive arm is mounted so as to be horizontally movable along the side of the swivel arm in a state where the drive arm is disposed inside the ship. In such a mechanism composed of a drive arm and a swivel arm, the state in which the base end of the drive arm is on the distal end side of the swivel arm moves in a direction in which the base end of the drive arm approaches the base end side of the swivel arm. When moving horizontally, the tip of the drive arm pushes the turning arm out of the boat, and the turning arm turns to the outside of the boat. When the base end of the drive arm moves horizontally in the opposite direction, the swing arm is pulled by the tip of the drive arm, and the swing arm is swung inboard.

As the mechanism for horizontally moving the base end of the drive arm, various horizontal movement mechanisms such as a cylinder mechanism operated by hydraulic or pneumatic pressure or electromagnetic force, and a rack and pinion mechanism operated by a motor can be adopted. The base end of the drive arm is slidably and rotatably mounted on a guide rail laid horizontally, and the base end of the drive arm is pulled horizontally along the guide rail by a winch mechanism. They can also be moved.

The tip side of the pier is suspended from the swing arm so as to be able to move up and down. As a mechanism for suspending the tip end side of the side ladder so as to be able to move up and down, a normal suspending / raising mechanism similar to a conventional side ladder device or the like can be adopted. Specifically, for example, if the distal end side of the pier is suspended by a wire accommodated in a hoisting winch mounted on the turning arm, the distal end side of the pier is raised and lowered by feeding and rewinding the wire. Hang the tip side of the port ladder
The lowered wire is placed in several sheave boxes.
To the hoisting winch mounted on the swing arm through the sheave
The wire is wound up by the operation of the winch
It is.

[0015]

When a ladder mounted on a ship is crossed over a quay using the berth apparatus of the present invention having the above-described structure, first, the base end side of the ladder is outboard from the berth side. To advance to At this time, the tip side of the side ladder is lifted up by the turning arm, and the turning arm is slightly turned to the outside of the boat in accordance with the advance of the base side of the side ladder, so that the tip side of the side ladder also goes out of the boat. That is, the entire pier moves parallel to the side of the ship and advances outboard.

In this state, if the tip side of the side ladder suspended on the turning arm is lowered, the base side of the side ladder turns vertically downward, and the side ladder is lowered from the side of the side in parallel with the ship's side.
This state is the same as that of the conventional side ladder device, and may be used when the quay is at a position close to the side of the ship. When the quay is far from the ship's side, the turning arm is further turned outward. The side ladder turns horizontally around the base end, and the front end of the side ladder moves outward from the shore side. In this state, the tip side of the pier is lowered. Then, the tip of the pier can reach the quay far from the ship's side.

[0017]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show the installation state of the side ladder device, and FIG. 3 shows the structure of the side pier device in an enlarged manner. As shown in FIG. 1, when the ship S is anchored on the quay B, the shore side T is curved, so that there is an uneven gap between the quay B and the shore B. When not in use, the side ladder 10 is accommodated on the deck of the ship S along the side of the shore T (X state indicated by a two-dot chain line).
In the housed state shown in FIG. 3, the side ladder 10 is placed on the storage stand 62, and is fixedly fastened with a wire rope 64 or the like so that the side ladder 10 does not move when a ship is navigating or the like.

As shown in FIG. 2, the side ladder 10 is provided with handrails 12 on both sides. Although not shown, a large number of treads or stairs are provided so that a person can go up and down in an inclined state. A lower landing 14 is provided at the tip of the side ladder 10 to maintain a horizontal state even when the side ladder 10 is inclined, thereby facilitating transfer from the quay B to the side ladder 10.

The base end of the gantry 10 is attached to the turning landing 24 so as to be able to turn vertically downward. The turning landing 24 is attached so as to be able to turn in the horizontal direction with respect to the advance / retreat floor 26. The advance / retreat floor 26 is attached to the guide rail 22 laid from the inside of the ship to the end on the side of the ship so as to freely advance / retreat. Although not shown, the advance / retreat 26 is operated by pulling a part of the advance / retreat 26 back and forth by a winch mechanism.

The pivot arm 30 has its base end side horizontally mounted to a support column 32 installed on the side of the port ladder 10 in the housed state (X state). As shown in FIG. 3, the base end side of the revolving arm 30 is branched in a Y-shape, and the distal end of the branched portion is supported on the support 32 by bearing members 33, 33. As shown in FIG. 1, the tip of the swivel arm 30 is approximately 90 ° from a position directly above the stowed ladder 10 in the stowed state to a position directly above the side ladder 10 in the used state (Z state) that has protruded outboard. It turns in the range of.

As shown in FIG. 2 and FIG.
A pair of wires 34 is pulled out from the distal end of the boat, and the pier 10 is suspended by the pair of wires 34. Wire 34
Is a winch device 36 provided on the proximal end side of the swing arm 30.
Rolled up. As shown in detail in FIG. 4, the wire 34 pulled out from the winch device 36 passes through a sheave 37 provided at an appropriate position of the swivel arm 30 and a sheave box 35 provided at the tip of the swivel arm 30, and is connected to the side of the pier 10. Is wound around sheaves 13 provided on the left and right sides of the vehicle, and its ends are fixed. Therefore, if the winch device 36 winds the wire 34, the pier 10 is pulled up by the wire 34, and if the wire 34 is paid out, the shore 10 is lowered.

One end of a drive arm 40 is rotatably mounted in the middle of the turning arm 30. Drive arm 40
A traveling member 70 is provided at the other end of the driving member 40 so as to be rotatable with respect to the driving arm 40.
The vehicle is mounted on a guide rail 50 installed substantially parallel to the side ladder 10 in the (state) and travels in a horizontal direction. FIG. 5 shows a detailed structure of the traveling member 70. A pair of left and right guide rollers 73, 73 are respectively inserted and arranged in the upper and lower spaces of the guide rail 50 made of H-section steel, and another guide roller 74 contacts the upper end of one side of the guide rail 50. These guide rollers 73, 74
The traveling member 70 can travel along the guide rail 50. On the side of the guide roller 50,
The traveling member 70 includes a pair of right and left sheaves 75, 75, and an operation wire 76 is wound around the sheaves 75, 75. A bearing portion 72 is provided at a side end of the traveling member 70, and is rotatably attached to the drive arm 40 by the bearing portion 72.

FIG. 6 shows an operation mechanism of the drive arm 40. One ends of the pair of wires 76 are fixed to both ends of the guide rail 50, respectively. Wire 76,
Reference numeral 76 is connected to a winch device 78 via sheaves 75 of the traveling member 70. The winch device 78 can wind up a pair of wires 76, 76 separately. One wire 7 on the winch device 78
When the wire 6 is wound up, a force is applied to move the sheave 75 around which the wire 76 is wound toward the end of the guide rail 50, thereby moving the traveling member 70 to the end of the guide rail 50. At this time, the opposite wire 76 is freely pulled out of the winch device 78. To move the traveling member 70 to the opposite side, the wire 76 on the opposite side may be wound up by the winch device 78.

The operation of the turning arm 30 by the driving arm 40 will be described. In FIG. 1, in the accommodated state (X state) of the side ladder 10, the traveling member 70 of the drive arm 40 is arranged on the end side of the guide rail 50 that is the tip side of the side ladder 10, and the drive arm 40 is It is in a state of being folded substantially parallel to the rail 50 and the side ladder 10.

When the traveling member 70 of the drive arm 40 is moved from the center of the guide rail 50 to the opposite end,
The turning arm 30 is pushed out of the boat by the drive arm 40, and the tip of the turning arm 30 turns to the outside of the boat. In the drive mechanism of the turning arm 30 by the driving arm 40, the turning arm 30 can be turned within a range of about 90 °, and a necessary and sufficient turning range can be set for the gantry of the present invention.

A method of using the side ladder device having the above structure will be described. In order to use the side ladder 10 housed along the side T of the ship S, first, in FIG.
By removing the wire rope 64 from the side pier 10 in the state,
Release the fixation. Next, the wire 34 of the swivel arm 30 is pulled up, and the pier 10 is slightly lifted from the stowage 62. At this time, when the side ladder 10 rises to a predetermined position, the limit switch is pressed by a part of the side ladder 10 so that the rise of the side ladder 10 can be detected, so that the side ladder 10 is surely maintained at an appropriate height. can do.

In this state, as shown in FIG.
At the base end side, the reciprocating floor 26 is advanced to the outside of the ship, and the turning arm 30 is slightly swung outwardly in accordance with the amount of advance of the reciprocating floor 26. Then, the pier 10 is sent out of the boat in a state parallel to the shore side T (Y state in FIG. 1). Next, as shown in FIG. 2, the winch device 36 of the turning arm 30 is operated to lower the pier 10 downward. At the point when the pier 10 has reached the vicinity of the quay B,
The descent of the pier 10 is completed.

As shown in FIG. 1, the turning arm 30 is turned by a necessary amount corresponding to the distance between the shore side T and the quay B. The pier 10 turns around the turning landing 24 on the base end side such that the front end side is largely swung out of the boat. The turning arm 30 turns to an appropriate position, and the tip of the pier 10 reaches the quay B. In addition, if necessary,
May be raised and lowered a little so that the tip of the pier 10 is accurately positioned near the surface of the quay B.

When the side ladder 10 is pulled up and accommodated in the vessel S, the side ladder device may be operated in the reverse process. It should be noted that, when the pier 10 is raised by the wire 34, when the shore 10 is raised to a predetermined position, the limit switch is activated to stop the hoisting operation of the winch device 36, so that it is safe and reliable. Pier 1
0 can be raised.

[0030]

The port ladder device according to the present invention described above has the above-described configuration. In particular, since the port ladder is suspended from the turning arm so as to be able to move up and down, the distance from the port side to the quay can be improved. Even if there is, the tip of the pier can be safely, easily and safely lowered to the quay.

Since the descent of the side ladder and the storage operation can all be operated on the ship side, as in the conventional method,
There is no need to keep workers on the quay side, and there is no need for heavy and dangerous work in handling the pier.
As a result, a ship equipped with the side ladder device of the present invention can start berthing and entry / exit of personnel quickly and easily regardless of the structure of the quay, thereby improving work efficiency, safety and economy. This will greatly contribute to improvement.

[Brief description of the drawings]

FIG. 1 is a plan view showing an installed state of a side ladder apparatus according to an embodiment of the present invention.

FIG. 2 is a front view of the same.

FIG. 3 is an enlarged side view of the side ladder device.

FIG. 4 is an explanatory view of a mechanism showing a hanging elevating mechanism of a pier.

5 (a) is a plan view, and FIG. 5 (b) is a side view, showing a drive arm mounting mechanism.

FIG. 6 is an explanatory view of a mechanism showing an operation mechanism of a drive arm.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Port ladder 24 Turning landing 26 Advance / retreat 30 Turning arm 34 Wire 40 Drive arm 50 Guide rail B Wharf S Ship T Shipboard side

Claims (1)

(57) [Claims] 1. A sideboard device mounted on a ship and spanned from a shoreside to a quay, wherein a base end side of the sideboard ladder is capable of moving back and forth from the shoreside side and capable of horizontal turning and downward vertical turning. with attached distal end side of the Gentei it is, and suspended vertically movable by a wire through the sieve box horizontally pivotable pivot arm, the length of the pivot arm
In the middle of the direction, the tip of the drive arm that drives the swing arm is attached to the tip side so as to be horizontally rotatable, and the base end of the drive arm is horizontally movable along the side where the swing arm is located on the side of the ship. A side ladder device which is attached.