JPH0344808Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a boarding device consisting of a stair tower and a ladder for boarding and disembarking from a berthed ship.

[Prior art]

BACKGROUND ART In recent years, as tankers and other ships have become larger, it has become very dangerous to board and disembark from the quayside when they are berthed.

In particular, in the case of conventional boarding equipment that allows boarding and disembarkation using a single ladder that can be tilted with one end on the quay side, the deck height differs greatly between when the ship is empty and when it is full. Since the deck height varies depending on the ship, the rudder often has a steep angle of inclination, which is extremely dangerous.

Therefore, boarding devices such as an elevator ladder system are also used, in which a stair tower is provided, and a lifting device is installed on the front side of the tower to raise and lower the ladder, so that boarding and disembarkation can be done using a ladder with a nearly constant slope. In this case, a ladder elevating device and its safety device are required, and the resulting increase in the weight of steel used makes the device large-scale, resulting in extremely high equipment and maintenance costs. There is.

[Purpose of the invention] The present invention was made in order to solve the problems of the conventional boarding device, and provides a boarding device that has low equipment and maintenance costs and allows safe boarding and disembarkation. It is intended to.

[Structure of the idea]

In order to achieve the above object, the boarding device of the present invention is constructed by providing a plurality of tiltable ladders at appropriate height intervals on the front side of a stair tower.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side view of an embodiment of the boarding device of the present invention, and FIG. 2 is a front view of the front side of FIG. 1.

First, as shown in Figure 1, the ships 2 berthed on the quay 1 side are subject to changes in water level such as W ₁ and W ₂ , the state of the cargo when the ship is empty and when it is full, and the differences between each ship. As a result, the height of deck 2A changes significantly as shown by h _A and h _B.

Therefore, the boarding device of this embodiment, which was devised to enable safe boarding and disembarkation in response to these different heights of the deck 2A, is designed to accommodate ships with a stair tower 3 installed upright on the quay 1 side. On the front surface of the second side, the first
As shown in the figure, a total of four ladders 4A, 4B, 4C, and 4D made of lightweight materials that can be tilted with one end as a fulcrum are installed at appropriate height intervals H ₁ , H ₂ , and H ₃ . , each ladder 4A, 4B, 4
A blue work ladder 5 for landing on the deck 2A of the ship 2 is attached to each end of C and 4D.

In addition, these ladders 4A, 4B, 4C, 4D
The height intervals H ₁ , H ₂ , and H ₃ may be equally spaced, but the height intervals H 1 , H 2 , and H 3 may be equally spaced, but the ladder 4
A, 4B, 4C, and 4D ladders are provided at appropriate height intervals and with an appropriate base number depending on the surrounding situation.

Also, these ladders 4A, 4B, 4C, 4D
can be tilted by a winch 6, and the ladder suitable for the height of the deck 2A of the ship 2 is tilted and used for boarding and disembarking. ,4C,4D
As shown in Fig. 2, the rudders 4A, 4B, 4C, and 4D are arranged alternately in a staggered manner so that the rudders do not interfere with each other. This boarding device is compactly formed.

[Effect of idea]

As explained above, the boarding device of the present invention is
Although it is extremely effective in improving safety when boarding and disembarking a ship, and has multiple ladders fixed at different height intervals, there is no lifting device for these ladders. Therefore, expensive equipment costs and maintenance costs for the lifting device and safety device are unnecessary, and the structure of the device is simple and compact, and the overall amount of steel used is reduced. It has the advantage that the equipment cost is about 1/3 to 1/4 cheaper than the conventional elevator ladder system.

Further, there is no need for the time needed to raise and lower the ladder, which is required in the elevator ladder system, and there is an advantage that the time efficiency of the boarding equipment is improved accordingly.

[Brief explanation of the drawing]

FIG. 1 is a side view of one embodiment of the boarding device of the present invention, and FIG. 2 is a front view showing the front side of FIG. 1. 2... Ship, 3... Stair tower, 4A, 4B,
4C, 4D...Rudder, 6...Winch, H ₁ ,
H ₂ , H ₃ ... Height interval.

Claims (1)

[Scope of utility model registration request] A boarding device in which multiple tiltable ladders are installed at appropriate height intervals on the front side of a stair tower.