JP2565524Y2 - Lifeboat descent test 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 descent test apparatus for lifeboats mounted on ships such as general merchant ships and passenger ships.

[0002]

2. Description of the Related Art A lifeboat consisting of a small boat for rescuing human life in the event of a distress is loaded on a ship. The lifeboat is required to have a descent test to test how many seconds from the storage position on the deck to reliably land on the water surface. An example of the descent test is shown in FIGS.

[0003] As shown in the figure, a boat davit 1 is erected on a deck 2, and a cradle 4 on which a lifeboat 6 is suspended from a tip by a hoisting rope 5 is raised and lowered toward the sea. It is provided freely. When not in use, the cradle 4 stands up as shown by a dashed line in FIG. 2, and the lifeboat 6 is held in the storage position. Landing is possible. The cradle 4 is provided with support legs 10 for supporting the cradle 4 on the deck in a lying position.

Assuming that the inclination of the cradle 4 supported from above the deck 2 by the support legs 10 is a reference inclination (0 degrees), the cradle 4 is set to a predetermined inclination from the reference inclination and the lifeboat 6 is set. Descent test is performed. For example, 20
A heel (inclination) descent test is generally performed. In this case, the inclination θ of the cradle 4 is 20 degrees below the reference inclination.
A support base 15 on which the support legs 10 are mounted is installed on the deck 2 so as to be at a proper angle.

[0005]

However, in such a test apparatus, a support 15 for setting the cradle 4 at a predetermined inclination is designed on the drawing, and the actual support 15 is designed based on the design. After fabrication, the support base 15 had to be welded onto the deck 2 or removed after the test, and it was not easy to carry out a drop test.

Accordingly, an object of the present invention is to provide a descent test apparatus for a lifeboat that can easily perform a descent test.

[0007]

In order to achieve the above object, a lifeboat descent test apparatus according to the present invention comprises a cradle in which a lifeboat is suspended from a tip by a hoisting rope on a boat davit standing on a deck. The cradle is set up and down freely.
Stop the cradle at the standard inclination by supporting it from above the deck
Provide support legs and place the cradle on the basis of the reference inclination.
With the lifeboat lowered and landing at a certain inclination,
Of a lifeboat performing a descent test that measures the time it takes to descend
In the descent test equipment, the boat davit and clade
Attach each eye plate to the
Set the cradle to the reference slope when performing the lower test.
To keep the cradle at that angle
Fixed ropes are stretched between the rates .

[0008]

[Action] Raise the cradle from the reference inclination to the predetermined inclination.
When performing a descent test on a lifeboat in this state
If, in the predetermined inclination by protractor cradle, Bo
Install a fixed cable between the Todavit and the cradle's eye plate.
And hold the cradle. This eliminates the need for the design, manufacture, welding, and removal of the support, which was conventionally required for the drop test, and makes it possible to perform the drop test extremely easily.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the accompanying drawings.

In FIG. 1, reference numeral 1 denotes a boat davit provided upright on a deck 2 on the side of a ship, and a pair of boat davits are arranged side by side at a predetermined distance in a direction perpendicular to the plane of FIG. A cradle 4 is pivotally supported at the base of each boat davit 1 by a shaft 3 so as to be able to move up and down to the side of the boat, and a lifeboat 6 is hung from the tips of both cradles 4 by hoist ropes 5.

As means for raising and lowering the cradle 4 on the deck 2, a hoisting device 7 (BOAT WINC (not shown)) is provided.
H) is installed, and a hoisting device 7 for hoisting and lowering the lifeboat 6 suspended by the hoisting rope 5 from the tip of the cradle 4 is installed. The hoisting rope 5 fed from the hoisting device 7 is connected to the front and rear of the lifeboat 6 via pulleys 8 and 9 attached to the upper end of the boat davit 1 and the end of the cradle 4.

The cradle 4 is provided with a support leg 10 for supporting the cradle 4 from above the deck 2 at a falling position indicated by a two-dot chain line whose tip extends most toward the side of the ship. This support leg 1
The inclination of the cradle 4 supported from above the deck 2 by 0 is set as a reference inclination (0 degree), and the cradle 4 is set to a predetermined inclination, for example, θ = 20 degrees from this reference inclination, and the lifeboat descends. In order to perform the test, a fixed cable 11 for setting and holding the cradle 4 at a heel of 20 degrees is provided between the boat davit 1 and the cradle 4. Eyeplates 12 and 13 are attached to the boat davit 1 and the cradle 4 in order to stretch the fixing cable 11. Reference numeral 14 denotes a lifeboat suspension hook provided at the tip of the cradle 4.

According to this configuration, the cradle 4 is
When the descent test of the lifeboat 6 is to be performed with the heel set to the degree heel, first, the inclination of the cradle 4 is measured with a protractor so that the inclination is set to 20 degrees by the hoisting device 7, and the boat davit 1 The fixing cable 11 is stretched between the eye plate 12 of the cradle 4 and the eye plate 12 of the cradle 4. In this case, a ruler for creating a 20-degree tilt angle may be created and used.

Next, the cradle 4 is returned to the storage position of the lifeboat 6 standing up as shown by the dashed line, and the cradle 4 is tilted from this position to a heel of 20 degrees at a stretch.
Hoisting rope 5 by hoisting device 7 from the position of 20 degree heel
A descent test is performed in such a manner that the lifeboat 6 is lowered by lowering the boat.

Since the cradle 4 is held at a predetermined inclination from the boat davit 1 by the fixing cable 11 when performing the drop test as described above, the design, production, and welding of the support base conventionally required in the drop test are performed. The removal test is not required, and the drop test can be performed very easily.

[0016]

[Effects of the Invention] In summary, according to the present invention, when performing a descent test, the boat davit and the cradle
Having been stretched and fixed rope between over preparative to hold a constant inclination at the cradle, conventionally, a support design was required in drop tests, fabrication, welding, removal is not required,
The drop test can be performed very easily.

[Brief description of the drawings]

FIG. 1 is a view showing an embodiment of a lifeboat descent test apparatus according to the present invention.

FIG. 2 is a diagram illustrating a case where a lifeboat is lowered from a cradle having a reference inclination.

FIG. 3 is a diagram showing a case where a lifeboat is lowered from a cradle having a predetermined inclination.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Boat davit 2 Deck 4 Cradle 5 Hoisting rope 6 Lifeboat 11 Fixed cable

Claims (1)

(57) [Scope of request for utility model registration] 1. A provided cradle suspended lifeboat by hoisting rope from the leading end to the boat was standing on the deck davits freely raised or lowered, and supported from the deck to the cradle Kure
Support legs that stop the
The above-mentioned cradle is raised to a predetermined inclination from the inclination
To land the lifeboat and measure the time required for its descent
In drop test apparatus lifeboat performing drop tests to the upper
Put the eye plate on the boat davit and cradle
When performing a descent test on the lifeboat described above.
Set the dollar to the reference slope and
Install a fixed cable between the eye plates to hold the ladle
A lifeboat descent test device, characterized in that: