JPS58202184A - Buoy device for cargo work - Google Patents

Abstract

PURPOSE:To simply attain the attaching and detaching operations of a mooring yoke by a method in which a projected coupler whose upper end is to be pivotally attached and hung down is provided to the tip of a yoke whose basal end is pivotally attached to a ship in such a way as to enable it to be coupled with a base seat turnable on the upside of a buoy moored on the sea. CONSTITUTION:A projected coupler 10 whose upper end is to be pivotally attached with a pin joint 8 in a rising and falling manner is provided to the tip of a yoke 2 whose basal end is pivotally attached to a ship being moored. Also, a base seat 11 turnable around the vertical axial line by vehicles 14 and 15 is provided to the upside of the float 3 moored on the sea by an anchor chain, and the projected coupler 10 is set in a manner that it can be housed in the base seat 11 by a guide metal 30 and a coupler pin 13. Thus, the attaching and detaching operations of the yoke as operations of mooring the ship to the buoy can be made easier, and the buoy suitable for frozen sea region or deep sea region can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cargo handling buoy device, and in particular, the present invention relates to a cargo handling buoy device that is installed on the buoy and is used for cargo handling between offshore structures such as ships or offshore work platforms moored to the buoy and land tank equipment. This invention relates to a buoy device for cargo handling that allows cargo handling to be carried out via a cargo pipe.

As a conventional cargo handling buoy device, for example, CALM (Ca
temporary Anchor Leg Mooring
) type, equipped with a cylindrical buoy for mooring and cargo handling, which has several watertight compartments.

The buoy is moored in a predetermined sea area by locking one end of the anchor chain to a chain stopper housing of a fender skirt provided around the bottom of the buoy.

In the state of mooring with the mooring line to this buoy.

Loading and unloading of fluids such as crude oil is carried out between tank equipment and ships via hoses under the buoy that extend from tank equipment on land to the buoy, and floating hoses that extend from moored ships, etc. It is now possible to

Note that the 70-ting hose is connected to the cargo manifold of the ship, and the means for connecting the under-buoy hose and the floating hose is as follows.

It consists of a central swivel unit, piping connected to its lower end, and piping placed on the turntable and connected to the upper end of the central swivel unit.

In addition, the turntable is rotatably attached to the top of the buoy via a roller bearing.

The pipe connected to the 70-ring hose is rotatable around the central swivel. That is,
A moored vessel can rotate around the buoy and continue cargo handling even if it is affected by wind or currents.

However, such conventional cargo handling buoy devices have the following drawbacks or problems.

(Since mooring lines are used as a means of mooring offshore structures, there is a risk that the offshore structure will approach the buoy and collide with it.)

(2) As the offshore structure rotates around the buoy, there is a risk that the floating hose may bend, and since the floating hose contains crude oil, etc., there is always a risk of leakage of crude oil, etc.

(3) When installing such a cargo handling buoy device in a frozen sea area, there is a disadvantage that the external mooring force becomes large, and a floating hose cannot be used.

(4) When ice conditions exceed the design ice thickness.

There is a need to quickly detach offshore structures from buoys, but conventional equipment takes a lot of time to do so.

The present invention aims to solve these problems.
While mooring a marine structure to a buoy can be done safely at all times, the mooring can be released efficiently and quickly in an emergency. The purpose is to provide a buoy device for cargo handling.

For this reason, the cargo handling buoy device of the present invention is applicable to a cargo handling buoy moored by an anchor chain, and a mooring buoy which is pivoted at its base end to an offshore structure in order to moor an offshore structure to the same buoy. A yoke is provided, and the upper end is pivotally attached to the tip of the yoke. The buoy is characterized in that the engaging member with a seat is rotatably mounted on the buoy around the vertical axis.

Hereinafter, a cargo handling buoy device as an embodiment of the present invention will be explained with reference to the drawings. Fig. 1 is a plan view thereof, Fig. 2 is an elevation view thereof, and Figs. 3.4 are its protruding engagement members. FIG. 6 is a partial cross-sectional view showing an engaged state and a separated state with an annular catch-equipped engaging member.

1st. ? As shown in the figure, a plurality of anchor chains 4, one end of which is anchored to the submarine foundation 9 by an anchor 5,
A cargo handling buoy 3 is moored, and in order to be able to moor a barge 1 as a marine structure to the buoy 3, the barge 1 is provided with a yoke 2 that is pivoted at its base end with a pin joint 7 and that rises and falls. ing.

In addition, the top end of the yoke 2 has a binge joint 8.
A protruding engagement member 10 is provided which is pivotally connected and hangs down.

Further, there is an engaging member 11 with an annular seat that removably fits and fixes the protruding engaging member 0.

It is mounted on the buoy 3 so as to be rotatable around the vertical axis.

That is, as shown in FIGS. 3 and 4, the engagement member 11 with an annular seat is configured such that the annular seat 12 and the buoy 3 can be rotated relative to each other around the vertical axis.

Wheels 14.15 are provided. Further, the protruding engagement member 10 is provided with a ring-shaped guide fitting 30, and the buoy 3 is provided with a cone-shaped guide fitting 29 that fits into this guide fitting 30.

When each engagement member 10.11 engages with each other.

The protruding engagement member 1 is arranged so that the two are fitted and fixed.
A plurality of coupling pins 13 are provided on the periphery of the distal end of the housing 13 so as to be protrusive and retractable, and a housing 13a that engages with the coupling pins 13 is provided on the engagement member 11 with an annular seat. As the engagement pin 13, a hydraulically driven or spring-backed coupling pin is used.

In addition, in order to raise and lower the yoke 2 when the barge 1 is moored to and released from the buoy 3, the barge 1 is provided with a winch 21 that winds a wire 22 whose one end is fixed to the yaw 2. ing.

Furthermore, when carrying out cargo handling work, crude oil and the like are first supplied from onshore tank equipment to an oil storage tank (not shown) in the par 71 and stored therein, and then loaded onto a tanker.

When loading cargo onto the barge 1, cargo is transported from the land tank equipment to the buoy 3 via submarine piping 28 and flexible hose 23.
Crude oil, etc. will be supplied to

In the buoy 3, a pipe 16 connected to a flexible hose 23,
Crude oil, etc. is supplied through the swivel 17 and the pipe 18, and the pipe 18 is connected to each pipe 20° 24 on the yoke 2 via a detachable connecting piece 19. There is. Connecting piece 19 to piping 20.
Flexible hose 24. Crude oil and the like are sent to a flexible hose 26 and a pipe 27 on the barge 1 via a pipe 25 along the upper surface of the yoke 2, and are stored in the barge 1.

With such a configuration, as shown in FIG. 3, when the engaging member 10.11 is fitted and fixed, after the engaging member 10.11 is guided by each guide fitting 29.30 and coupled,
The coupling pin 13 is inserted into the housing 13a and the engagement member 10.11 is firmly fixed.

Furthermore, when the engagement member 10.11 is separated, the coupling pin 1
By pulling out the wire 3 and winding the wire 22 with the winch 21, the yaw 2 is caused. (See Figure 4) By the way, the pipes 20 and 18 can also rotate with the relative rotation between the annular seat 12 and the buoy 3. 8 and the pipe 16 are allowed to rotate relative to each other while maintaining fluid tightness by a swivel 17.

Note that the cargo handling buoy device of the present invention is not only the CALM type shown in each figure, but also the SALM (Single
It can also be applied to the Anchor Leg Mooring (Anchor Leg Mooring) type.

In addition to barges, marine structures include ships.
) is also fine.

As detailed above, the cargo handling buoy device of the present invention has the following advantages and effects.

(1) The yoke is easy to attach and detach, making it difficult to handle with conventional cargo handling buoy devices. Emergency evacuation of offshore structures can be performed quickly.

+2) By pivotally connecting the buoy and the yoke, a large-sized cargo handling buoy device suitable for use in frozen sea areas and deep water areas can be realized.

[BRIEF DESCRIPTION OF THE DRAWINGS] The figures show a cargo handling buoy device as an embodiment of the present invention. The engaged state and the separated state of the protruding engaging member and the engaging member with an annular seat are shown in the partial cross-sectional view. 1. Barn as an offshore structure, 2. York, 3.
・Cargo handling buoy, 4... Anchor chain, 5... Anchor, 7.8-- Binge joint, 9... Submarine foundation, 10
... protruding engagement member, 11... engagement member with annular catch,
12...Annular catch, ]3...Joining pin, 13a...No housing, 14.15...Wheel, 16...Piping. 17... Swivel, 18... Piping, 19... Connection piece, 20... Piping, 21... Winch. 22. Wire, 23, 24. Flexible hose, 25.
・Piping, 26...Flexible hose, 28...Seafloor piping, 2
9.30... Guide metal fittings. Sub-Agent Patent Attorney Yoshihiko Iinuma

Claims (1)

[Claims] It is equipped with a cargo handling buoy that is moored by an anchor chain, and a mooring yoke that swings up and down and whose base end is pivotally connected to the offshore structure in order to moor the offshore structure to the buoy. A protruding engagement member is provided which is pivotally connected and hangs down, and an annular engagement member with an annular seat that removably engages and fixes the protruding engagement member is arranged around the vertical axis of the buoy. A cargo handling buoy device characterized by being rotatably mounted.