JPS6135031B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an emergency escape device for quickly and safely lowering a lifeboat containing crew members and workers from a ship in distress, an offshore oil drilling base, etc. to the ocean.

Conventional lifeboat evacuation devices are not sufficient for emergency evacuation because they take a long time to operate until they are lowered from the ship to the sea, and the lifeboat shakes and collides with the side of the mother ship during descent, which is dangerous.

An object of the present invention is to provide an emergency evacuation device to the ocean that solves the above-mentioned conventional problems.

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

In FIGS. 1 and 2, a descent platform 1 carries an all-weather lifeboat 2 and is normally suspended from a davit 4 installed in a hull 3. In this suspension structure, a support frame 6 of a fixed pulley 5 is suspended from a davit 4, a support frame 9 of a movable pulley 8 is suspended from this via a quick release 7, and a descent platform 1 is suspended from the support frame 9. This is a structure for suspending the suspension arm 10.

On the other hand, a weight 1 is attached along the side by a wire rope 12 from a davit 4 via a quick release 11.
A wire rope 14 with one end fixed to the davit 4 was lowered from the movable pulley 8 to the fixed pulley 5, pulled down to the side by the fixed pulley 15, and its lower part was attached to the weight 13. drum 16
and secure the terminal to this.

In this case, the weight of the descent platform 1 and the lifeboat 2 is normally transferred directly to the davit 4 via the quick release 7.
The weight of the weight 13 is supported by the weight of the wire rope 12 together with the rolled weight of the wire rope 14.
The wire rope 14 is normally unloaded.

The descending platform 2 contacts the hull 3 with tire wheels 17 provided on the top, bottom, right and left, and rolls while mitigating the impact caused by shaking against the hull 3 when descending.

The quick releases 7 and 11 are of a known electromagnetic type and are operated from inside the lifeboat 2, and when activated, they release the connection between the support frames 6 and 9 and cause the weight 13 to fall.

Next, the operation of the present invention will be explained with reference to FIG.

In case of emergency evacuation to the sea, transfer to the lifeboat 2 and first activate the quick release 11. At that time, the weight 13 falls into the water while letting out the wire rope 14 (FIG. 3a). Then, when the quick release 7 is activated, the descending platform 1 is suspended by the wire rope 14 and descends while pulling up the weight 13 (FIG. 2(b)). Since the descending speed of the descending platform 1 is determined by the ratio of the weight of the weight 13 to the total weight on the descending side, the weight of the weight 13 is determined appropriately to keep the descending speed of the lifeboat 2 within the safe speed, and The impact force of lifeboat 2 should be set at a value that does not pose any danger to the crew. In this way, when the descent platform 1 lands on the water (c in the figure) and then the lifeboat 2 lands on the water and floats up (d in the figure), the lifeboat 2 automatically leaves the descent platform 1.

Even if the platform 1 shakes and collides with the hull 3 during descent, the cushioning action of the wheels 17 keeps the occupants safe.

The present invention has the above-mentioned configuration, and in the event of an emergency evacuation, it is only necessary to activate the quick release from inside the lifeboat, and after this operation, it is possible to descend to the sea at a set safe speed. from,
It is extremely easy to operate, reduces the risk of collision with a descending ship, and allows for safe escape to the ocean.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a side view, FIG. 2 is an elevational view, and FIG. 3 is an explanatory view of the operation. 1...Descent platform, 2...Lifeboat, 4...Fixed member, 5...Fixed pulley, 7, 11...Quick creases, 8...Moving pulley, 12, 14...Wire rope, 13... Weight, 16... drum, 17... tire wheel.

Claims (1)

[Claims] 1. The movable pulley that suspends the descent platform carrying the lifeboat is suspended from the fixed pulley via a quick release that can be operated from inside the lifeboat, and one end of the wire rope wound around both pulleys is fixed. The drum is fixed to a member and the other end is attached to a weight, and the drum is freely rolled up and fixed, and the weight in the rolled-up state is suspended from the fixed member via a quick release that can be operated from inside the lifeboat. death,
An emergency evacuation device for the ocean, characterized in that when both the quick releases are activated, the descent platform is decelerated by a weight and descends onto the water.