JPH0448678B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a marine hose davit device for hoisting a land-side oil supply hose and connecting it to a connecting pipe of a loading manifold on a marine vessel.

(Prior art) Generally, a loading manifold is provided on the upper deck of an oil tanker, and when loading oil onto or unloading oil from an oil tanker, the loading manifold It is necessary to connect the oil supply pipe on the land side to the connection pipe via the oil supply hose.

In order to connect the above-mentioned oil transmission pipes, an oil transmission pipe connection device called "chiksan" is usually installed on the quay of the oil loading/unloading base.

By the way, there are many cases where the above-mentioned oil pipe connection device is not provided in some loading terminals in the Middle East, Southeast Asia, etc., or in loading terminals where ports cannot be constructed due to shallow water depth.

At loading or unloading terminals where the above-mentioned oil pipe connection equipment is not provided, a fuel hose connected to a land-based oil storage tank is laid out to the sea, and a marker buoy is connected to the tip of the oil hose via a chain. are connected.

When connecting the above-mentioned oil supply hose to a connecting pipe of a loading manifold of an oil tanker, the following method has conventionally been used.

As shown in Figure 5, the marker buoy was raised with the help of a small support vessel, and the tip of the oil supply hose H was hoisted up using a derrick crane C on the deck. Chain blocks and winches were also used as necessary. While using both, pull the oil supply hose H up close to the loading manifold M on the deck, and with several people connect the oil supply hose H to the connection pipe P of the loading manifold M.
was connected to.

Furthermore, in Japanese Utility Model Application Publication No. 60-121000, a post is installed on the side of the ship, a boom that extends out from the side of the ship is installed on the post so that it can rotate freely horizontally, and a relay pipe is connected to the boom to the connecting pipe of the loading manifold. There is described a marine hose davit device which is provided with a relay pipe whose tip end is opened downward, and which is provided with a hoisting means for hoisting an oil supply hose on the boom.

(Problems to be Solved by the Invention) As mentioned above, when hoisting or lowering the oil supply hose using a derrick crane, winch, chain block, etc., the derrick crane must be installed at the desired position. Because the suspended oil supply hose has a large degree of freedom in swinging, it is necessary to position the oil supply hose so that it fits into the specified connection pipe of the loading manifold, and to send the oil to the connection pipe. There is a problem in that it takes several workers and a great deal of labor and time to connect the ends of the oil hoses, making it difficult to streamline and save labor in the oil hose connection work.

On the other hand, with the marine hose davit device described in the above publication, not only does the overall structure of the device become quite complex, but it is also necessary to attach a hanging hardware near the tip of the oil supply hose. And the removal work becomes troublesome.

When the height of the boom is low, it obstructs traffic on the side, and when the height of the boom is high, it becomes difficult to connect the oil supply hose to the relay pipe.

(Means for Solving the Problems) A marine hose davit device according to the present invention has an arm attached to a pivot frame on the side of the vessel corresponding to any one of the connection pipes of a loading manifold of a vessel, and the arm is attached near the base end in the longitudinal direction. A driving means is provided, which is rotatably supported by a supporting shaft in the same direction, and drives the arm to change its swinging position between a substantially vertical lifting position and a substantially horizontally tilted hose connection position toward the manifold. The arm extends from the main frame section with a length from the side to the vicinity of the connecting pipe, and from the tip of the main frame section, and when the arm is brought down to the hose connection position, it extends from the end of the connecting pipe to the manifold side without interfering with the connecting pipe. Consisting of an extending overhanging frame part,
With the arm raised to the lifting position via a tension cable drawn out from the tip of the overhanging frame, the oil supply hose is hoisted close to the overhanging frame, and the arm is brought down to the hose connection position. The system is equipped with a hoisting means for pulling the oil supply hose toward the connecting pipe in the suspended state.

(Function) In the marine hose davit device according to the present invention, as described above, the arm is rotatably supported near the base end of the arm on the side pivot frame by a support shaft oriented in the direction of the ship's ship, and the drive means With the arm raised to a substantially vertical lifting position, the tension cable of the lifting means, which is let out from the tip of the overhanging frame part, is connected to the oil supply hose on the sea, and the tension cable is wound by the lifting means. As it is being fried, the oil supply hose is hoisted up close to the overhanging frame section.

When the oil supply hose is fully hoisted and the arm is tilted almost horizontally to the hose connection position by the driving means, the overhanging frame part of the arm can be moved from the end of the connecting pipe of the loading manifold without interfering with the connecting pipe. Since it extends toward the manifold side, the connecting pipe faces the tip of the oil supply hose supported on the upper surface of the arm.

Next, after removing the blind plate at the end of the connecting pipe and the blind plate at the end of the oil supply hose, the oil supply hose is further wound up by the lifting means, and the oil supply hose moves toward the tip of the arm. The tip of the oil supply hose will come into contact with the end of the connecting pipe.

On the other hand, after loading or unloading cargo oil, with the oil supply hose separated from the connecting pipe, the arm is raised to the lifting position by the drive means, and the tension cable of the lifting means is let out to supply oil. The hose can be returned to sea.

(Effects of the Invention) According to the marine hose davit device according to the present invention, as explained above, after the tension cable of the lifting means is connected to the oil supply hose, the lifting means and the driving means are operated except for removing the blind plate. With this simple operation, the oil supply hose can be reliably lifted and moved to a position where it can be connected to the connecting pipe.

In addition, after loading or unloading of cargo oil,
The refueling hose can be returned to the sea with a simple operation similar to the above.

Therefore, it is possible to save labor and simplify the work of connecting and separating the oil supply hose, thereby increasing work efficiency.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

As shown in Fig. 1, a loading manifold M for loading and unloading cargo oil is provided on the upper deck D of an oil tanker. A connecting pipe P is provided toward the side of the ship.

A marine hose davit device HD for hoisting a marine oil supply hose H and connecting it to the connecting pipe P is provided on the side corresponding to any of the connecting pipes P as described below.

As shown in FIGS. 1 to 3, a pair of front and rear pivot frames 1 are fixed on the upper deck D on the side corresponding to the connecting pipe P, and an arm 3 is attached to the pivot part 2 of the pivot frame 1. A spindle 4 near the base end of the
By rotatably supporting the arm 3, the arm 3 is attached to the pivot frame 1 so as to be swingable around the support shaft 4, and the arm 3 is moved at least to a substantially vertical lifting position and to the loading manifold side. The hose can be freely swung between a substantially horizontal hose connection position and a substantially horizontal position.

The pivot portion 2 of the pivot frame 1 is opened upward so that the arm 3 can be removed from the pivot frame 1 using a derrick crane (not shown) and attached to another pivot frame (not shown). It is formed into a U-shaped notch.

The arm 3 has a main frame portion 3A that extends from the side to near the end of the connecting pipe P when the arm 3 is tilted to the hose connection position, and extends integrally from the tip of the main frame portion 3A. When the arm 3 is raised to the hoisting position, it slightly overhangs the side, and when the arm 3 is brought down to the hose connection position, the connecting pipe P
and an overhanging frame part 3B extending toward the manifold M side from the end of the arm 3, so that when the arm 3 is brought down to the hose connection position, the roller 5 provided at the base end of the arm 3 overhangs to the outer edge of the gunwale side. The support shaft 4 is provided at a position approximately 1 to 1.5 m away from the roller 5.

The rollers 5 and 6 are used to movably support the oil supply hose H when the arm 3 is brought to the hose connection position and the oil supply hose H is drawn toward the connecting pipe P as shown in FIG. .

An opening 7 is formed over the entire length of the overhanging frame portion 3B so that the connecting pipe P faces the tip of the oil supply hose H when the arm 3 is in the hose connection position. As shown in FIG. 3, the connecting pipe P is inserted through the opening 7 and projects to the upper surface of the overhanging frame portion 3B.

A double-acting hydraulic cylinder 8 as a driving means for swinging the arm 3 between the lifting position and the hose connection position is provided between the front and rear pivot frames 1, and the end of the cylinder body is It is rotatably connected to a bracket 9 on the deck, and the tip of the piston rod is rotatably connected to the base end of the arm 3 between the support shaft 4 and the roller 5. The chambers are each connected to a hydraulic power source (not shown) via a directional control valve.

When the piston rod of the hydraulic cylinder 8 is retracted, the arm 3 is held in the lifting position as shown in Figure 2, and when the piston rod is extended to its full stroke, the arm 3 is held in the hose connection position as shown in Figure 3. It is becoming more and more common.

With the arm 3 held in the hoisting position, the oil supply hose H on the sea is hoisted close to the overhanging frame part 3B, and with the arm 3 held in the hose connection position, the oil supply hose H is connected to the connecting pipe P. The lifting means for pulling it toward the direction includes a hydraulic motor 10 and a hydraulic motor 10 that receive hydraulic pressure from a hydraulic supply source.
The winch 11 is driven by a winch 11, a wire 12 extending from the winch 11, a plurality of sheaves 13a and 13b guiding the wire 12, and a lifting block 14 suspended by the wire 12.

The winch 11 and the hydraulic motor 10 are installed on the front side of the front pivot frame 1, and the winch 11 is arranged so that the length of the wire 12 does not change as much as possible when the arm 3 swings from the lifting position to the hose connection position. is provided near the support shaft 4.

The wire 12 extending from the winch 11 is attached to a sheave 1 provided on the front surface of the arm 3 at the boundary between the main frame section 3A and the overhang frame section 3.
3a, the wire 12 is fed out from a sheave 13b provided at the front of the tip of the overhanging frame portion 3B, and the wire 12 passes through a pair of sheaves 14a of the lifting block 14, and the end of the wire 12 is fed out from the sheave 13b provided at the front of the tip of the overhanging frame portion 3B. It is attached to the rear. In this way,
The tension of the wire 12 can be reduced.

However, the sheave 13b may be provided at the center of the tip of the overhanging frame portion 3B and connected directly to the lifting block 14 with one wire 12, but in that case the wire tension will be increased.

The lifting block 14 is suspended by the wire 12 via a sheave 14a, and is detachably connected to a metal fitting 15 at the tip of the oil supply hose H by a shackle 14b at the lower end of the lifting block 14.

In addition, as shown in Fig. 1, the metal fitting 1 of the oil supply hose H
5 is connected to a marker buoy (not shown) via a pair of chains 16.

A control stand 17 for operating the hydraulic motor 10 and hydraulic cylinder 8 of the marine hose davit device HD is disposed near the winch 11, and a plurality of operating levers 17a of the control stand 17 control the hydraulic supply system. It is designed to switch the directional control valve. Furthermore, code 1
8 is a brake handle for braking the winch 11. Note that as the winch 11, it is desirable to use an automatic tension type winch.

Next, an explanation will be given of the operation when hoisting the oil supply hose H on the sea and connecting it to the connecting pipe P using the marine hose davit device HD.

First, with the arm 3 held in the lifting position as shown in Figures 1 and 2, the wire 12 is let out from the winch 11 to lower the lifting block 14 to near the sea surface, and the lifting block 14 is lowered onto a small support vessel at sea. The shackle 14b of the lifting block 14 is connected to the metal fitting 15 of the oil supply hose H.

Next, when the wire 12 is hoisted by the winch 11, the oil supply hose H is hoisted upward without damaging the ship's side because the tip of the overhanging frame portion 3B is overhanging outside the ship's side.

The tip of the oil hose H is connected to the main frame section 3A.
Stop the winch 11 when it reaches the top of the
As the piston rod of the hydraulic cylinder 8 is extended, the arm 3 connects to the oil supply hose H as shown in Figure 3.
At the same time, the connecting pipe P falls to the hose connecting position, and the connecting pipe P passes through the opening 7 of the overhanging frame portion 3B, faces the upper surface side of the arm 3, and faces the tip of the oil supply hose H. In this state, after removing the blind plate 19 of the connecting pipe P and the blind plate 20 of the oil supply hose H, restart the winch 11 and wind up the wire 12. The flange at the tip of the oil supply hose H connects to the connecting pipe P.
Since the oil supply hose H comes into contact with the flange of the connecting pipe P, the oil supply hose H can be connected to the connecting pipe P.

After loading or unloading cargo oil, connect the connecting pipe P.
The oil supply hose H is separated by separating the oil supply hose H from the oil supply hose H, raising the arm 3 from the hose connection position to the lifting position, and letting out the wire 12 by the winch 11. It can be returned to the sea.

Next, the marine hose davit device HD according to the above embodiment may be partially modified as follows.

(1) Instead of fixing the pivot frame 1 on the upper deck D as in the above embodiment, a guide member is provided in the shipboard direction corresponding to the loading manifold M, and this guide member is attached to the pivot frame 1. The support frame 1 may be supported and fixed so as to be movable in the direction of the ship's ship.

In this case, the hose davit device HD can be set at a position corresponding to the desired connecting pipe P on the loading manifold M.

(2) The pivot frame 1 of the above embodiment may be detachably fixed to the side portion of the loading manifold M corresponding to the connecting pipe P with bolts and nuts.

(3) As shown in FIG. 4, guide members 21 for guiding the oil supply hose H may be fixed to both sides of the arm 3, and instead of this guide member 21, the oil supply hose H is held from both sides. It is also possible to provide a pair of clamp arms for warm clamping, and to drive the clamp arms to open and close using a hydraulic cylinder.

(4) The winch 11 and hydraulic motor 10 may be incorporated into the base end of the arm 3, or may be provided at the distal end of the extending arm portion 3B.

(5) In principle, the marine hose davit device HD is installed on both the port and starboard sides, but in this case, the winch 11 and hydraulic motor 10 are installed on the upper deck D at the center in the width direction of the hull, Hose davit device HD on both port and starboard sides from winch 11
The wire 12 may be disposed through a plurality of sheaves, respectively.

(6) The overhanging arm portion 3B of the arm 3 may be configured to extend straight to the upper end of the main frame portion 3A.

In this case, if the stroke of the hydraulic cylinder 8 is increased and the arm 3 is tilted to such an extent that the upper end of the overhanging frame portion 3B overhangs to some extent outside the outer edge of the gunwale when the arm 3 is raised to the lifting position, the oil supply hose can be This can prevent damage to the ship's side when hoisting H.

The opening 7 of the overhanging frame section 3B may be opened toward the distal end side so that the overhanging frame section 3B and the connecting pipe P do not interfere with each other when the arm 3 is brought down to the hose connection position.

(7) The overhanging frame portion 3B is configured to be slidable with respect to the main frame portion 3A, and the hydraulic hose H is brought into contact with the end of the connecting pipe P by driving the overhanging frame portion 3B with a hydraulic cylinder. may be configured.

[Brief explanation of the drawing]

Among the drawings, FIGS. 1 to 4 show embodiments of the present invention, and FIG. 1 is a perspective view of a loading manifold of an oil tanker and a marine hose davit device;
FIG. 2 is a front view of the same as above when the arm is in the lifting position, FIG. 3 is a front view of the same as above when the arm is in the hose connection position, FIG. 4 is a perspective view of a marine hose davit device according to a modified example, and FIG. FIG. 5 is a diagram corresponding to FIG. 1 according to the prior art. M...Loading manifold, P...Connection pipe, HD...Marine hose davit device, H...Oil supply hose, 1...Pivot frame, 3...Arm,
3A... Main frame part, 3B... Overhanging frame part, 4... Support shaft, 7... Opening, 8... Hydraulic cylinder, 10... Hydraulic motor, 11... Winch, 12... Wire, 13a, 13b... Sheave, 14... Lifting block, 17... Control stand.

Claims (1)

[Claims] 1. An arm is rotatably supported near its base end by a support shaft facing in the direction of the ship's ship, on a pivot frame provided on the side of the ship's loading manifold corresponding to any of the connection pipes, and the arm is A driving means is provided to switch the swinging position between a substantially vertical lifting position and a substantially horizontal hose connection position tilted toward the manifold side, and the arm is a main frame portion having a length extending from the gunwale to the vicinity of the connecting pipe. and an overhanging frame section that extends from the tip of the main frame section and extends from the end of the connecting tube toward the manifold side without interfering with the connecting tube when the arm is brought down to the hose connection position, and the tip of the overhanging frame section With the above-mentioned arm raised to the lifting position, the oil supply hose is hoisted up close to the above-mentioned overhanging frame via the tension cable let out from the above, and the oil supply hose is connected with the above arm brought down to the hose connection position. A marine hose davit device characterized by being provided with a hoisting means for pulling toward a pipe.