JPH0347997Y2 - - Google Patents

Description

[Detailed explanation of the idea] Industrial applications The present invention relates to a gangway device.

2. Description of the Related Art Ships are generally equipped with a gangway device.
Conventionally, this gangway device is comprised of an inclined ladder whose one end is swingably supported in a vertical plane on the side of a ship, and a winch device for lowering the other end of the inclined ladder onto the sea surface.

Problems to be Solved by the Invention According to the above conventional configuration, since the inclined ladder is simply suspended above the sea surface by a winch device, the rocking period of the ship side and the rocking period of the small boat on the sea surface are affected. When the motion periods do not match, there is a problem in that it is difficult and dangerous for people to transfer.

Therefore, an object of the present invention is to provide a gangway device that can solve the above problems.

Means for Solving the Problems In order to solve the above problems, the gangway device of the present invention is provided with a first landing that can be moved in and out from the ship's side toward the outside of the ship, and a second landing on one side of the first landing. One end of a first ladder is connected via a first horizontal pin, one side of a second landing is connected to the other end of the first ladder via a second horizontal pin, and the other side of the second landing is connected to the other end of the first ladder via a second horizontal pin. One end of a second ladder is connected to the section via a third horizontal pin, a transfer platform is connected to the other end of the second ladder via a fourth horizontal pin, and a floating body is attached to the bottom surface of the transfer platform. The upper part of the frame member of the first landing, the upper part of the frame member of the second landing, and the upper part of the frame member of the second landing and the upper part of the frame member of the transfer platform are connected by connecting members parallel to the ladder. a parallel link mechanism configured by the first and second swinging devices for respectively swinging the first and second ladders in a vertical plane; and a control device for controlling the first and second swinging devices. and the first swinging device includes a winch device that suspends the first ladder via the rope, a first air cylinder that applies tension to the rope, and a first air cylinder that applies tension to the first air cylinder. The second rocking device is composed of a first air source connected via piping and a first on-off valve provided in the middle of the first air piping, and the second rocking device extends between the second landing and the second ladder. a second air cylinder provided with the
The control device includes a second air source connected to the second air cylinder via a second air pipe, and a second on-off valve provided in the middle of the second air pipe, and the control device controls the first and second air cylinders. first and second pressure detectors that detect the pressure of the second air cylinder; and pressure signals from these pressure detectors are inputted to the first air cylinder.
and a control section that controls the second on-off valve and the winch device.

For example, when people transfer from a boat to a ship, the entire ladder is taken out of the ship, each ladder is appropriately swung by each rocking device, and the floating body is lowered to the sea surface and the transfer platform is moved. Be flush with the boat. At this time, the air cylinders in each rocking device are controlled as follows. That is, when the waves are small (normally), the second on-off valve is open, but the first on-off valve is closed. Therefore, the first
The ladder hardly swings, and only the second ladder swings following the waves via the floating body. On the contrary,
When the wave becomes large and the pressure signal value from the second pressure detector exceeds a predetermined range, the second on-off valve is closed and the first on-off valve is opened. Therefore, the first air cylinder expands and contracts, and the first ladder and second ladder swing together to follow the large waves.
Then, when the pressure signal value of the second pressure detector falls within the predetermined range again, the first on-off valve is closed and the second on-off valve is opened, and the transfer platform is moved by small waves. Follow. In addition, when the first ladder is swinging and the wave becomes large and the pressure signal value from the first pressure detector exceeds a predetermined range, the first ladder
As the on-off valve closes, the winch device operates to follow the large movement. Further, if this pressure signal value falls within a predetermined range, the winch device is stopped and the first on-off valve is opened. in this way,
The entire ladder can be made to follow the motion of the boat regardless of the size of the waves, from small to large waves.

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 to 5.

Reference numeral 1 denotes a first landing that is provided on the ship's side upper deck 2 so as to be able to move in and out toward the outside of the ship, and rollers 4 that are guided by guide rails 3 provided on the upper deck 2 are provided on the lower surface of the first landing. It is being

One end of a first inclined ladder (hereinafter referred to as a first ladder) 5 arranged along the ship's side is connected to one side of the first landing 1 via a first horizontal pin 6 . One side of a second landing 7 is connected to the other end of the first ladder 5 via a second horizontal pin 8. On the other side of this second landing 7, one end of a second inclined ladder (hereinafter referred to as a second ladder) 9 is connected to a third
A transfer platform 12 is connected to the other end of the second ladder 9 via a horizontal pin 10, and a lifting device 13 is connected to the lower surface of the transfer platform 12. Floating body 14 is attached via. This elevating device 13 includes a transfer platform 12
and a telescopic member 15 consisting of a pantograph mechanism provided between the floating body 14 and the telescopic member 1.
5 and an expansion/contraction air cylinder 16 that expands and contracts the air cylinder 5. The second landing 7 and the transfer platform 12 are always parallel to the first landing 1 regardless of the inclination of the ladders 5 and 9. In other words, the handrail (frame member) of the first landing 1
1a upper part and the handrail (frame member) 7a of the second landing 7
The upper part is the inclined handrail (connecting member) 5 of the first ladder 5
a, and this inclined handrail 5
A and the first ladder 5 are arranged to be parallel to each other and have equal lengths. Therefore, the first landing 1 and the second landing 7 are connected via a parallel link mechanism. Also,
Similarly to the above, the upper part of the handrail 7a of the second landing 7 and the upper part of the handrail (frame member) 12a of the transfer platform 12 cooperate with the second ladder 9 to form an inclined handrail (connecting member) that constitutes a parallel link mechanism. They are connected to each other by 9a. In addition, on the ship A side of the transfer platform 12,
A roller 17 is attached, and a rubber fender 18 for buffering against the boat B is attached on the opposite side.

This device is provided with first and second swing devices 19 and 20 that swing the first and second ladders 5 and 9, respectively, in a vertical plane, and also A control device 21 is provided for controlling the devices 19,20. This first swinging device 19 includes a winch device 23 that suspends the middle part of the first ladder 5 via a cable body 22, and a winch device 23 that suspends the middle part of the first ladder 5 via a cable body 22.
and a tensioning device 24 that applies tension to 2. Furthermore, this tensioning device 24 includes a first air cylinder 25 and its egress/egress rod 25a.
A first pulley block 26 provided at the tip, a second pulley block 27 provided at the end of the cylinder body 25b, and a cylinder (air source) that supplies air to the first air cylinder 25 via the first air pipe 28. ) 29 and a first on-off valve 30 provided midway through the first air pipe 28, and as shown in FIG. There is. Therefore, by expanding and contracting the first air cylinder 25, the rope body 22 can be tightened or loosened. The second rocking device 20 includes a second air cylinder 31 provided between the second landing 7 and the second ladder 9, and supplies air to the second air cylinder 31 via a second air pipe 32. It consists of a cylinder (air source) 33 and a second on-off valve 34 provided midway through the second air piping 32. Therefore, by expanding and contracting the second air cylinder 31, the second ladder 9 can be swung relative to the second landing 7. The control device 21 is
The first and second pressure detectors 35, 36 are provided in positions closer to the cylinder body than the on-off valves 30, 34 in the middle of the first and second air piping 28, 32, and the pressure from these two pressure detectors 35, 36 is The control section 37 inputs a pressure signal value and controls the first and second on-off valves 30, 34 and the winch device 23. In the middle of the cable 22 of the first rocking device 19, the first ladder 5, that is, the entire ladder, is placed between the storage position on the upper deck 2 (solid line position in Figure 3) and the use position at sea. An egress/egress device 38 for retracting is provided. That is, a guide tube 40 is attached to the lower surface of the deck 39 one above the upper deck 2, and a slide tube 4 is installed inside this guide tube 40.
1 is inserted and arranged so as to be retractable, and the guide tube 40
A hydraulic cylinder 42 for advancing and retracting the slide tube 41 is disposed inside the slide tube 41, and a guide pulley 43 for guiding the cable 22 is provided on the slide tube 41.

Next, the effect will be explained.

First, when the boat B approaches the main ship A, the entire horizontally stored ladder is projected outward from the hull by the winch device 23 and the exit/exit device 38, as shown by the imaginary line in FIG. Next, as shown by the solid line in FIG. 1, the winch device 23 lets out the cable 22 to swing the first ladder 5 downward, and the second air cylinder 31 swings the second ladder 9 downward. Then, the floating body 14 is lowered by the telescopic air cylinder 16 so that the lower surface of the transfer platform 12 is slightly higher than the upper surface of the boat B. Note that at this time, the first air cylinder 25 is expanded to tension the cable body 22. In this state, a person can transfer from boat B to transfer platform 12, for example.

By the way, at the time of transfer, the entire ladder is controlled as follows.

When the waves are small (normal), the second on-off valve 34 is open, but the first on-off valve 30 is closed. Therefore, the first ladder 5 hardly swings, and only the second ladder 9 swings following the waves via the floating body 14. On the other hand, when the wave becomes large and the pressure signal value from the second pressure detector 36 exceeds a predetermined range (when the wave becomes large, the amount of expansion and contraction of the second air cylinder 31 increases, causing a change in the pressure inside the cylinder). increases), the second on-off valve 34 is closed and the first on-off valve 30 is opened.
Therefore, the first air cylinder 25 expands and contracts, and the first ladder 5 and second ladder 9 swing together to follow the large waves. Then, the second pressure detector 36
When the pressure signal value falls within a predetermined range, the first on-off valve 30 is closed, the second on-off valve 34 is opened, and the transfer platform 12 follows the small waves. In addition, while the first ladder 5 is swinging, the wave becomes large and the pressure signal value from the first pressure detector 35 exceeds a predetermined range (a range that can be absorbed by the first air cylinder 25). When the movement occurs, the first on-off valve 30 is closed and the winch device 23 is activated to follow the large movement. Additionally, if this pressure signal value falls within a predetermined range, the winch device 23
stops, and the first on-off valve 30 is opened.
In this way, the entire ladder can be made to follow the movement of the boat B regardless of whether the waves are small or large, that is, regardless of the size of the waves.

In addition, when storing the entire ladder, the floating body 22 is raised, the second air cylinder 31 is extended, and the cable body 22 of the winch device 23 is hoisted to store the entire ladder. Make it horizontal. Then, if the hydraulic cylinder 42 for egress and egress is retracted and the rope body 22 is further reeled in, the third
As shown by the solid line in the figure, the entire ladder can be stored.

Effects of the Invention According to the above-mentioned configuration of the present invention, the boarding platform from the boat is connected via the first and second ladders, and each air cylinder of the first and second swinging devices for swinging each ladder is connected. Since it is activated in accordance with the vertical movement of the transfer platform, the transfer platform can follow the rocking of the boat regardless of the size of the waves, allowing people to transfer safely. I can do it.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, in which Fig. 1 is an overall side view, Fig. 2 is a view taken in the direction of - arrow in Fig. 1,
FIG. 3 is a cutaway front view of essential parts showing the stored state of the entire ladder, FIG. 4 is a view taken along the - arrow in FIG. 3, and FIG. 5 is a schematic configuration diagram of the control system. 1...1st landing, 1a...handrail, 5...1st
Inclined ladder, 5a... Connection member, 6... First horizontal pin, 7... Second landing, 7a... Handrail, 8... Second horizontal pin, 9... Second inclined ladder, 9a... Connection member , 10... Third horizontal pin, 11... Fourth horizontal pin, 12... Transfer platform, 12a... Handrail, 13
... Lifting device, 14 ... Floating body, 19 ... First swing device, 20 ... Second swing device, 21 ... Control device, 22 ... Rope body, 23 ... Winch device, 24
... Tension device, 25 ... First air cylinder, 2
8...First air piping, 29...Cylinder, 30...
First on-off valve, 31...Second air cylinder, 32
...Second air piping, 33...Cylinder, 34...Second on-off valve, 35, 36...Pressure detector, 37...
Control unit, 38... exit/exit device.

Claims (1)

[Scope of utility model registration request] A first landing is provided from the ship side so that it can move in and out toward the outside of the ship, and one end of a first ladder is connected to one side of the first landing via a first horizontal pin.
Connecting one side of the second landing to the other end of the ladder via a second horizontal pin, connecting one end of the second ladder to the other side of the second landing via a third horizontal pin,
A transfer platform is connected to the other end of the second ladder via a fourth horizontal pin, and a floating body is provided on the lower surface of the transfer platform so as to be able to rise and fall freely, and the upper part of the frame member of the first landing and the second
The upper part of the frame member of the landing, the upper part of the frame member of the second landing, and the upper part of the frame member of the transfer platform are respectively connected by connecting members parallel to the ladder to constitute a parallel link mechanism, and the first and second ladders are connected to each other by connecting members parallel to the ladder. A first and a second rocking device each swinging within a vertical plane are provided, and a control device is provided to control the first and second rocking devices, and the first swinging device is a winch device for suspending a first ladder; a first air cylinder for applying tension to the rope; a first air source connected to the first air cylinder via a first air pipe;
The second rocking device includes a first on-off valve provided in the middle of the air pipe, and a second air cylinder provided between the second landing and the second ladder, and a second air cylinder provided in the second landing and the second ladder. The control device includes a second air source connected via a second air pipe and a second on-off valve provided in the middle of the second air pipe, and the control device controls the pressure of the first and second air cylinders. The invention is characterized by comprising first and second pressure detectors that detect the pressure, and a control section that inputs pressure signals from these pressure detectors to control the first and second on-off valves and the winch device. Gangway device.