JPS6322234Y2 - - Google Patents

Description

[Detailed description of the invention] [Technical field of the invention] This invention is a seabed mining method in which seabed minerals such as manganese nodules on the seabed are collected by an ore collector and transported to a ship via an ore lifting pipe for mining. This invention relates to a resource mining vessel, and in particular to a fairing transfer device for transferring a fairing that rectifies seawater around an ore lifting pipe from the ship's hull side to a derrick workbench and attaching it to the ore lifting pipe during towing.

[Technical background of the idea and its problems] As shown in Figure 1, a seabed resource mining vessel connects a large number of ore lifting pipes sequentially in the axial direction on the ship's hull 1, and lowers the pipes into the sea. A string 2 is formed, and mineral resources are mined from the seabed 4 using a mineral collector 3 attached to the tip of the pipe string 2. 2, it is now transported on board and mined. To connect the ore lifting pipes, the ore lifting pipes are supplied one by one from the pipe storage device 5 on the hull 1 via the bridge 6 to the derrick 7 above the gimbal axis, and are connected in sequence. In this case, the derrick 7 is provided so as to be swingable in the longitudinal and width directions of the hull 1 by means of gimbal bearings, thereby compensating for the oscillation of the pipe string 2 due to the shaking of the hull 1. During mining, the ore collector 3 is towed by the hull 1, but power cables and operating cables for the ore collector and submersible pump are laid around the pipe string 2 to resist water resistance. The pipe string 2 is provided with a fairing 8 for rectifying seawater and reducing resistance.
As shown in FIG. 2, the fairing 8 is adapted to be mounted on a derrick workbench below the gimbal bearing after the ore lifting pipe 9 is connected.

However, when attaching the fairing 8 that has been transferred from inside the hull 1 and taken out onto the upper deck to the ore lifting pipe 9, the hull 1 is shaken by the waves.
In addition, since the ore lifting pipe 9 suspended by the derrick 7 and the workbench for attaching the fairing are in a substantially stationary state with the oscillation compensated by the gimbal, there is relative movement between them, and the fairing 8 is attached from the hull 1 to the workbench. Very difficult to transport and install.

[Purpose of the invention] The purpose of the invention is to provide a fairing transfer device for a submarine resource mining vessel that can safely and reliably transfer and attach a fairing to an ore lifting pipe suspended from a derrick as described above. It is to be.

[Summary of the invention] This invention supports a derrick via a gimbal bearing on the ship's hull so that it can rotate freely in the longitudinal and width directions of the ship, and attaches a fairing to the ore lifting pipe suspended in the center of the derrick. In the fairing transfer device of a seabed resource mining vessel that transfers and attaches a
A fairing loading/unloading device is provided to transfer the fairing to the derrick workbench suspended by a gimbal bearing and attach it to the ore lifting pipe, and the loading/unloading device is swingably connected to the derrick and the hull, and the above-mentioned fairing is attached to the derrick and the hull. The feature is that a fixing device is provided for fixing each loading/unloading device. When grasping the fairing from the ship's hull, the loading/unloading device is pulled toward the hull using the fixing device on the hull, and when the fairing is transferred to the ore lifting pipe, the loading/unloading device is secured to the derrick using the fixing device on the derrick side. By doing so, the work of transporting and installing the fairing can be carried out safely and reliably.

[Embodiments of the invention] Hereinafter, preferred embodiments of the fairing transfer device for a submarine resource mining vessel according to the invention will be described with reference to the accompanying drawings.

In FIG. 3, a derrick 7 is supported by a gimbal mount 10 provided on the hull 1 via a gimbal bearing so as to be rotatable in the longitudinal direction and the width direction. This gimbal bearing includes a pin 12 provided along the width direction of the pedestal 10, an outer frame 13 that is supported by the pin 12 and rotates in the front-rear direction, and an outer frame 13 provided along the front-rear direction. , inner frame 1 of derrick 7
1 rotatably supported in the width direction. A pipe storage device 15 for storing a large number of ore lifting pipes 9 is provided on the hull 1 in front of the derrick 7.
The ore lifting pipe 9 in 5 is transferred into the lifting device 16,
The ore lifting pipe 9 is delivered to the bridge 6 provided between the lifting device 16 and the derrick 7, and the ore lifting pipe 9 is delivered from the bridge 6 to the derrick 7 with the bridge 6 rotated vertically as shown in the figure. 7 and lowered into the sea through the moon pool 1'.

Further, a fairing storage device 18 for storing the fairing 8 shown in FIG. A crane 20 is provided. The fairing lifting device 19 is adapted to supply the fairing 8 supplied to the lifting device 19 to the upper deck transfer device 21.

The fairing 8 is further horizontally transferred to the vicinity of the derrick by the transfer device. A fairing loading/unloading device 22 is provided which grasps the fairing carried by the upper deck transfer device on the hull side, receives it on the derrick side, transfers it to a predetermined position on the derrick workbench 7', and attaches it to the ore lifting pipe in the center. It will be done. As shown in FIG. 4 and FIG.
In between, a lever member 23 is fitted to the pin 12 supporting the outer frame 13 so as to be rotatable in the longitudinal direction, and a lever member 23 is fitted to the lever member 23 so as to be rotatable in the width direction by a pin 24 on the centerline of the hull. It is composed of a guide member 25 which is suspended, and a guide rod 26 which is rotatably supported by a swing gear box 30 below the guide member 25. The guide rod 26 is equipped with a gripping device for gripping the fairing 8, and is equipped with an elevating unit 42a (in this embodiment, two sets of units 42a and 42b) that can extend and contract back and forth and move up and down.

These lifting units 42a and 42b connect a lifting frame 27 with a pantograph type link 28 that can be freely extended and contracted back and forth by a drive cylinder 35, and a gripping metal fitting 29 that grips the fair ring 8 is attached to the tip of the link 28.
A drive cylinder 36 for driving the gripping fitting 29 to open and close it freely is attached. Further, this elevating frame 27 is equipped with a pinion 32 that meshes with a rack gear 33 attached to the guide rod 26 to enable vertical elevating and a elevating motor 34 that drives the pinion. The lifting frame 27 has a built-in guide roller (not shown) for smoothly guiding it over the guide rod 26.

On the other hand, the guide rod 26 to which the lifting units 42a and 42b are mounted so as to be able to rise and fall is fitted with a swing gear in a swing gear box 30 at its upper end, and is driven by a swing drive motor 31 via a pinion gear.
It is configured to rotate together with the lifting units 42a and 42b.

Further, this loading/unloading device 22 is configured such that the entire loading/unloading device 22 including the lever member 23, the guide member 25, the swing gear box 30, the guide rod 26, and the lifting units 42a, 42b is moved by the pin 12 in the longitudinal direction of the hull. It is freely rotatable around the center. Furthermore, the pin 24 at the center of the lever member 23 moves the guide member 25 and below, the swing gear box 30, the guide rod 26, and the lifting unit 42.
a and 42b are rotatable about the pin 24 in the width direction of the hull.

The cylinder 37 is pivotally supported by the pin 39' of the cylinder mounting bracket 39 at the center of the gimbal mount 10 in the bow direction so as to be rotatable in the front, rear, left, and right (width direction), and is rotatable in the lower part of the guide member 25 in the front, rear, left, and right directions, and can be extended and contracted. The guide rods 26 are connected to each other so that the guide rods 26 can be pulled toward the upper deck transfer device and fixed, or released and swung. Further, the fixing cylinder 38 below the gimbal bearing of the derrick 7 is rotatably supported on the derrick 7 side and the guide rod 26 side, allowing the guide rod 26 to rotate back and forth, and is also fixed on the derrick 7 side. It is configured like this.

On the other hand, the lever member 23 and this leggy member 23
A guide member 25 is suspended from the center of the frame by a pin 24 so as to be rotatable in the width direction, and is telescopically connected by two cylinders 41 on both sides of the guide member, which are supported on a pin shaft so as to be rotatable in the left and right directions. The structure is such that the cylinder can be operated to cause the guide member 25 to match the movement in the width direction of the ship, or this operation can be released to match the movement of the derrick 7.

Next, the operation of the present invention will be explained.

As mentioned above, the ore lifting pipe 9 from the pipe storage device 15
are supplied to the derrick 7 via the lifting device 16 and the bridge 6, where they are sequentially connected and lowered into the sea, where they are suspended and supported by the derrick 7.

At the same time as the ore lifting pipe 9 is connected, the fairing 8 in the fairing storage device 18 is transferred to the cart 21 of the upper deck transfer device on the deck of the hull 1 via the stack crane 20 and the lifting device 19. By the horizontal movement of 21, it is transported to the vicinity of the derrick 7. The fairing 8 (indicated by the two-dot chain line in FIG. 4) transferred to the vicinity of the derrick 7 is grasped by the fairing loading/unloading device 22 on the derrick side and transferred to the derrick side. At this time, the fairing loading/unloading device 22 releases the operation of the fixed cylinder 38 on the derrick side, and releases the operation of the cylinder 37 on the gimbal mount 10 side.
The guide rod 26 is moved to the fourth position by operating the
Pull it to the position indicated by the two-dot chain line in the figure and block the hydraulic pressure to fix it. At the start of the pulling operation, the cylinders 41 on both sides of the guide member 25 are operated to align the guide rod 26 on the hull center line, and the hydraulic pressure of the cylinders 41 is blocked to close the lever member 2.
Fixed at 3.

Therefore, the guide rod 26 is fixed to the hull 1 via the gimbal frame, and there is no relative movement with respect to the ship even when the ship is pitched (swaying in the longitudinal direction) or rolling (swinging in the width direction). On the other hand, the derrick 7 is compensated for swinging in the longitudinal direction by the gimbal shaft pin 12 and for swinging in the width direction by the pin 14, and is in a state independent of the movement of the hull.

When the guide rod 26 is completely fixed to the hull side, the lifting units 42a and 42b are raised and lowered to predetermined positions, and then the turning motor 31 is activated to move the loading/unloading device in the direction of the fairing 8 on the upper deck transfer device. Swirl. When the directions match, the gripping metal fitting 29 is opened by the opening/closing cylinder 36, and the telescopic link 28 is extended by the operation of the drive cylinder 35. When the gripping metal 29 reaches the position of the fairing 8 shown by the two-dot chain line, the above-mentioned opening/closing cylinder 36
is actuated to close the gripping fittings 29 and clamp the fairing 8.

When the fairing 8 is grasped, the lifting motor 34
The telescopic link 28 moves up and down slightly due to the operation of the telescopic link 28.
The fairing is received from the truck 21 by contracting. Next, rotate the guide rod 26 by 90 degrees,
Point the gripped fairing 8 in the width direction of the ship.
When the fairing delivery operation from the hull side is completed, the received fairing 8 is then transferred to a predetermined position on the derrick workbench 7' side. To perform this transfer, first, the guide rod 26, which had been pulled toward the gimbal mount 10 side and whose swinging in the front and back direction was fixed, is released from the cylinder 27, and the hydraulic pressure is activated in the extension direction to gradually swing the guide rod toward the derrick 7. 26 is swung out to a state parallel to the derrick workbench 7', and when it comes into contact with the guide rod stopper 40, the hydraulic pressure of this cylinder 37 is released, allowing it to freely expand and contract. Furthermore, just before the guide rod 26 finishes swinging out, the lever member 23
Cylinder 41 which fixed the swinging in the width direction of the hull.
The fixation of the two cylinders is gradually released and the cylinder 41 is made to be able to freely expand and contract, and the guide rod 26 is freed from oscillation, so that its own weight gradually reduces the sway in the vertical direction. At the same time, the fixing cylinder 38 on the derrick 7 side is gradually retracted to fix the cylinder on the center line of the derrick 7. Therefore, the guide rod 26 is released from the gimbal mount 10 and is fixed to the fixing cylinder 38 and the guide rod stopper 40 on the derrick 7 side. However, the swing is compensated for by the free expansion and contraction of the cylinder 41, and the movement completely matches the movement of the derrick 7, eliminating any relative movement. In this state, the lifting unit 42a,
42b. Once raised and lowered to a predetermined height, the guide rod 26 is then turned 90 degrees to rotate and transfer the fairing 8 into the interior of the derrick workbench 7'.

The fairing 8 transferred into the derrick workbench 7' can be handed over by opening the gripping metal fittings 29 at a predetermined position, or it can be transferred to a second place while being gripped.
As shown in the figure, cables for supplying power to underwater equipment are spread out from the mating surface 8a of the fairing 8 to the left and right, and cables for supplying power to underwater equipment are attached, and the telescopic link 28 is extended and pushed up to the ore lifting pipe 9 in the center, and the fairing 8 is connected to the above-mentioned cable. It is also attached to the ore lifting pipe 9. After the fairing 8 has been delivered or installed, the telescopic link 28 is retracted and the guide rod 26 is turned 90 degrees in the opposite direction to the above-mentioned direction to complete one cycle of operation.

When unloading the ore pipe 9 and the fairing 8, it is preferable to transfer the fairing from the derrick workbench to the cart of the upper deck transfer device on the ship's hull side in the reverse order as described above.

[Effects of the Invention] As is clear from what has been described in detail above, the present invention exhibits the following excellent effects.

(1) When transferring the fairing from the hull side to the derrick side, the guide rod equipped with the fairing loading/unloading device is pulled toward the gimbal mount side,
Movement in the longitudinal direction is restrained and fixed to the same frame, and movement in the left and right direction is also restrained and fixed to the gimbal frame via a lever member. At the same time, the fixation of the guide rod with the derrick side is released, and the connection with the derrick side is separated. Therefore, the fairing loading/unloading device can safely and reliably deliver and transfer the fairing without relative movement to the ship's hull under severe working conditions on the open sea.

Furthermore, since the guide rod is fixed to the gimbal mount, it always maintains the same position and distance from the fairing on the hull side, making it easy to automate the positioning of each operation and save labor.

(2) Transferring and installing fairings on the derrick side The guide rod equipped with the fairing loading/unloading device is separated from the hull side by releasing the restraining fixation from the hull side and activating only the fixing device on the derrick side. It moves in the same way as a derrick whose movement in the front, back, left and right is compensated for by the gimbal axis, without any relative movement. Therefore, the transfer work and the installation work within the derrick can be carried out very easily and safely. Furthermore, automation can be easily performed and labor can be saved.

(3) According to the present invention, there is no need for a device for transporting and mounting the fairing inside the derrick workbench, and the working space inside the workbench can be widened, resulting in safety.

(4) Also, according to the present invention, there is no need for a device for conveying and mounting the fairing inside the derrick workbench, making the entire device inexpensive.

[Brief explanation of the drawing]

Figure 1 is an overall diagram showing the outline of the submarine resource mining vessel;
Fig. 2 is a perspective view showing details of the fairing attached to the ore lifting pipe in Fig. 1, Fig. 3 is an overall view showing an embodiment of the fairing transfer device for a submarine resource mining vessel according to the present invention, and Fig. 4. 5 is a front view showing a main part of the fairing transfer device for a submarine resource mining vessel according to the present invention, and FIG. 5 is a right side view of FIG. 4. In the figure, 1 is the hull, 1' is the moon pool, 7 is the derrick, 8 is the fairing, 9 is the ore lifting pipe, 10 is the gimbal mount, 22 is the loading/unloading device, 37, 38,
41 is a fixing device.

Claims (1)

[Scope of utility model registration request] A fairing for a submarine resource mining vessel in which a derrick is rotatably supported in the ship's hull via gimbal bearings in the longitudinal and width directions of the ship, and the fairing is transferred and attached to the ore lifting pipe suspended in the center of the derrick. The transfer device is equipped with a fairing loading and unloading device that grasps the fairing on the ship's hull, transfers the fairing to a derrick workbench suspended by a gimbal bearing, and attaches it to the ore lifting pipe. 1. A fairing transfer device for a seabed resource mining vessel, characterized in that it is provided with a fixing device that is swingably connected to the ship's hull and fixes the loading/unloading device to the derrick and the ship's hull, respectively.