JPH0527429Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Industrial application field] This invention is used to mine seabed resources such as manganese nodules,
The present invention relates to an undersea resource mining vessel that lifts and retrieves resources, and specifically relates to a portal crane for transporting a mining machine stored on the upper deck to a derrick device when lowering it into the sea.

[Prior Art] An example of a submarine resource mining ship is shown in FIG. A derrick device 4, which is arranged so as to be swingable, stores the pipes in a pipe storage shelf 5 provided on the hull 3, and transports the pipes from the pipe storage shelf 5 using an elevating device 6 and a pipe loading/unloading device 7 as necessary. a pipe storage and transfer device for delivering to the derrick device 2 or from the derrick device 2 to the pipe storage shelf 5;
8 is an ore collector 9 stored on the upper deck of the hull 3
A portal type crane that transfers materials from the upper deck to the derrick device 2 or from the derrick device 2 to the upper deck, 10
is a pipe string in which a large number of pipes are sequentially connected in the axial direction on a derrick device 2 and lowered to the sea through a moon pool 11 provided in a hull 3, and an ore collector 9 is attached to the tip of the pipe string 10, It is now possible to mine 12 mineral resources on the ocean floor.

When the above-mentioned gantry crane 8 lowers the ore collector 9 to the seabed 12, the main trolley and auxiliary trolley of the gantry crane 8 move the ore collector 9 stored horizontally on the upper deck through the suspension beam. By lifting the machine 9 and moving the main trolley and auxiliary trolley, the ore collector 9
is moved to the derrick device 2 side, the hanging beam of the main trolley is lifted to place the ore collector 9 in a vertical state, and the hanging beam of the auxiliary trolley is removed from the ore collector 9 and the hanging beam of the main trolley is lowered. Mine collector 9
is lowered into the moon pool 11, the messenger rope from the derrick device 2 is connected to the ore collector 9, the messenger rope is wound up, and at the same time, the rope suspending the suspension beam of the main trolley and the auxiliary trolley is unwound. By doing so, the upper end of the ore collector 9 is transferred to below the lower workbench of the derrick device 2, and the diver connects the flexible pipe transferred from the pipe storage and transfer device 4 to the ore collector 9 underwater. The flexible pipe is held by the gripping device of the derrick device 2, the next flexible pipe is connected to the flexible pipe on the lower workbench, and the ore collector 9 is moved into the sea via the flexible pipe by the lifting device on the derrick device 2 side. Then, the pipes are successively connected and the ore collector 9 is lowered into the sea.

However, with the above-mentioned device, a diver has to connect the flexible pipe to the ore collector 9 in the underwater part of the moon pool 11, and the ore collector 9 is shaken by waves, making the work difficult and time-consuming. There are problems such as the fact that it takes a lot of effort and is dangerous work.

[Problems to be solved by the invention] Therefore, in order to solve the above-mentioned problems, the flexible pipes that are directly connected to the ore collector 9 are connected in advance on the upper deck of the moon pool 11 instead of being connected underwater. It may be possible to connect the flexible pipe to the ore collector 9, but since the flexible pipe easily bends under its own weight, connect the flexible pipe to the ore collector 9 on the upper deck, and with the ore collector 9 in a vertical position, move the main trolley into the moon pool 11. If the flexible tube is lowered to the derrick device 2, the flexible tube will bend downwards, and therefore, when connecting the next tube to the flexible tube, the connection cannot be made at the lower work platform of the derrick device 2, and the diver will still be able to It is necessary to do this in the pool 11.

In view of the above-mentioned circumstances, the present invention has been developed in such a case that when a flexible pipe that is directly connected to an ore collector is connected to the ore collector in advance on the upper deck, the connection of the next flexible pipe to be connected to the flexible pipe is carried out at the lower part. The purpose was to make it possible to perform it on a table.

[Means for Solving the Problems] The present invention includes a derrick device that can rotate in the longitudinal direction and width direction of the hull, and a pipe storage shelf provided in front or rear of the derrick device to transfer pipes to the derrick device. In a submarine resource mining ship equipped with a pipe storage and transfer device, in which pipes fed from the pipe storage and transfer device are successively connected by the derrick device and lowered into the sea, a girder section is installed behind or in front of the derrick device. A main trolley and an auxiliary trolley that can move sideways in the longitudinal direction of the ship, a suspension beam that is suspended from the main trolley and an auxiliary trolley, respectively, and that can hang an ore collector, and a flexible pipe connected to the ore collector. The apparatus is equipped with a winding drum that can constantly apply a predetermined tension to the winding rope during transport to the ore collector.

[Operation] The ore collector stored horizontally is suspended from the main trolley and the auxiliary trolley via suspension beams, and the flexible pipe connected to the ore collector is suspended from the winding rope. The ore collector is then transferred in a horizontal state to a predetermined position on the derrick equipment side, and then the ore collector is returned to a horizontal state by raising the suspension beam on the main trolley side more than the suspension beam on the auxiliary trolley side. to vertical position. At this time, since the flexible tube is constantly pulled upward by the winding rope of the winding drum, the flexible tube does not bend or bend. When the ore collector is in the vertical position, the suspension beam of the auxiliary trolley is removed from the ore collector, and the main trolley's suspension beam is lowered to lower the ore collector to a predetermined position at the bottom, and the flexible pipe connected to the ore collector is removed. is transferred to the derrick device by the necessary means to connect the next flexible pipe.

[Example] Hereinafter, an example of the present invention will be described based on the accompanying drawings.

1 to 8 show an embodiment of the present invention.

A derrick device 24 is disposed above the moon pool 22 provided in the center of the hull 21 so as to be able to swing in the longitudinal and width directions of the hull 21 via a gimbal bearing 23, and a gate is provided at the rear of the derrick device 24. A model crane 25 is installed.

To explain the gate type crane 25, two gate type frames 26 erected on the upper deck are connected to the pin 27.
A girder 28 extending in the longitudinal direction of the hull 21 is fixed to the upper part of the gate-shaped frame 26, and a rail 29 is laid along the girder 28.
Above, a main trolley 30 and an auxiliary trolley 31 that can move freely
are arranged so that the main trolley 30 is located closer to the derrick device 24 than the auxiliary trolley 31.

One end of the main hoisting rope 33 is wound and fixed around the main hoisting drum 32 disposed on the girder 28,
The main hoisting rope 33 is passed along the girder 28 to the hull 2.
1 to the rear, wrap it around the sheaves 34 and 35 arranged at the rear end of the girder 28, change the direction, and move the girder 28
The sheave 36 is attached to the main trolley 30 via a pin 84 and a bracket 85, and the sheave 37 is disposed below the sheave 36.
It is directed forward, wrapped around the sheaves 38, 39, and 40 disposed at the tip of the girder 28 to change its direction, and directed from the sheave 40 in the width direction of the girder 28, and arranged symmetrically with each sheave in plan view. Another sheave installed 40, 39, 38, 36, 37, 36, 3
5 and 34, the other end is wrapped around the main hoisting drum 32 and fixed (see FIG. 3).

One end of the auxiliary hoisting rope 42 is wound around the auxiliary hoisting drum 41 disposed on the girder 28 and fixed;
The auxiliary hoisting rope 42 is attached to the hull 2 along the girder 28.
1 forward, change direction by sheaves 43 and 44 arranged at the front end of the girder 28, and direct it toward the rear of the hull 21 along the girder 28, and attach the pin 8 to the auxiliary trolley 31.
6 and the sheave 45 attached via the bracket 87 and the sheave 46 disposed below the sheave 45
A sheave 4 is provided at the rear end of the girder 28, extending from the sheave 45 toward the rear of the hull 21.
7, 48, 49 and change direction, sheave 4
Another sheave 49, 48, 47, 45, 46, 45, 44, which faces from 9 in the width direction of the girder 28 and is arranged symmetrically with each sheave when viewed in plan.
43, the other end is wound around the auxiliary winding drum 41 and fixed. (See Figure 4).

Main trolley traveling drum 5 arranged on the girder 28
Wrap one end of the transverse rope 51 around 0 and fix it,
The transverse rope 51 is directed toward the rear of the hull 21, wrapped around a sheave 52 disposed on the girder 28, changed direction, directed toward the front of the hull 21 along the girder 28, and placed at the tip of the girder 28 on the front side of the hull 21. The sheaves 53 and 54 are wound around the provided sheaves 53 and 54, and the other end is fixed to the main trolley 30. One end of the rope 55 is wrapped and fixed, and the transverse rope 55 is attached to the girder 2.
The sheave 56 disposed on the same axis as the sheave 52 is wrapped around the sheave 56 disposed on the same axis as the sheave 52, the direction is changed, and the hull 21 of the girder 28 is directed toward the rear of the hull 21 along the girder 28.
It is wound around the sheaves 57 and 58 arranged at the tip of the rear side and directed toward the front of the hull 21, and the other end is attached to the main trolley 3.
It is fixed at 0 (see Figure 5).

Auxiliary trolley traveling drum 5 arranged on the girder 28
Wrap one end of the transverse rope 60 around 9 and fix it,
The transverse rope 60 is directed toward the front of the hull 21, wrapped around a sheave 61 disposed on the girder 28 to change direction, and then directed toward the rear of the hull 21 along the girder 28, and attached to the tip of the girder 28 on the rear side of the hull 21. It is wound around the provided sheaves 62 and 63 and directed toward the front of the hull 21, and the other end is fixed to the auxiliary trolley 31. Also, the rope is wrapped around the auxiliary trolley traversing drum 59 in the opposite direction to the traversing rope 60, but facing the same direction. One end of the transverse rope 64 is wrapped and fixed, and the transverse rope 64 is wrapped around a sheave 65 arranged on the same axis as the sheave 61 on the girder 28 to change direction and move forward along the girder 28 to the front of the hull 21. Facing, hull 2 of girder 28
1 is wound around sheaves 66 and 67 disposed at the forward end of the sheave 21 and directed toward the rear of the hull 21, and the other end is fixed to the auxiliary trolley 31 (see FIG. 6).

A winding drum 68 is disposed on the girder 28 and can be driven by a drive device capable of automatic tension control, such as a torque motor.
The fixed winding rope 69 is directed toward the front side of the hull 21 along the girder 28, and is wound around the sheaves 70 and 71 arranged on the front end side of the girder 28, and the other end is wrapped around the ore collector 88. It can be connected to the upper end of a flexible pipe 90 that has been connected in advance on the upper deck.

The sheaves 37 and 46 suspended below the main trolley 30 and the auxiliary trolley 31 via the main hoisting rope 33 and the auxiliary hoisting rope 42 are pivotally connected to brackets 72 and 73 as shown in FIG. 72, 73 are connected to suspension beams 76, 77 via pins 74, 75, and brackets 82, 83 on which sheaves 80, 81 are pivotally supported are connected to the suspension beams 76, 77 via pins 78, 79. .

An ore collector storage platform 89 for storing an ore collector 86 is installed on the upper deck below the gate frame 26 on the rear side of the hull 21, and a flexible pipe 90 is connected to the ore collector 88 in advance on the upper deck. A flexible tube storage stand 91 is provided to store the pipes so that they do not bend.

The details of the lower workbench 92 of the derrick device 24 will be explained with reference to FIGS. 9 and 10. An in-derrick ore collector transfer device 93 that can move sideways in the longitudinal direction of the hull 21 is installed on the lower workbench 92. A flexible holder 104 into which a support part 103 at the upper end of a flexible pipe 90 suspending an ore collector 88 can fit is provided at the protruding end of the in-derrick ore collector transfer device 93 on the side of the gate crane 25.

In addition, 94 in FIG. 1 indicates a tube storage shelf 95 for storing various types of tubes, an elevating device 96 that grasps the tubes stored in the tube storage shelf 95 and raises and lowers it while holding a traversing trolley, and a traversing trolley. A traveling trolley 97 that hangs a lifting device 96 holding a pipe and travels between the derrick device 24 and the pipe storage shelf 95 receives the pipe from a traveling trolley suspended from the traveling trolley 97, grips it, and lifts the pipe upward. It is a tube storing and transferring device equipped with a tube carrying-in/out device 98, etc., which rotates to deliver the tube to the tube gripping device of the derrick device 24, and as shown in FIG. 11A,
Around the portal crane 25, there is a steady rest for winding and unwinding an anti-swaying rope 99 to prevent the ore collector 88 from shaking in the horizontal direction when the ore collector 88 is suspended and transferred. A drum 100 and the like are provided.

Next, the operation of the present invention will be explained with reference to FIGS. 11A to 11F.

First, the main trolley traversing drum 50 and the auxiliary trolley traversing drum 59 are driven to stop the main trolley 30 and the auxiliary trolley 31 at predetermined positions on the girder 28, and then the main hoisting drum 32 and the auxiliary hoisting drum 41 are driven.
is driven to unwind the main hoisting rope 33 and the auxiliary hoisting rope 42, lowering the hanging beams 76, 77, and lowering the hanging beams 76, 77 to the hanging rope 10.
1,102 to the ore collector 88 on the ore collector storage stand 89, and the winding drum 68 is driven to unwind the winding rope 69, and the tip of the winding rope 69 is collected on the upper deck in advance. The main hoisting rope 3 is connected to the tip of the flexible pipe 90 connected to the mining machine 88.
2 and the auxiliary hoisting rope 41 to wind up the main hoisting rope 33 and the auxiliary hoisting rope 42, the ore collector 88 is raised while being maintained in a horizontal state. At this time, the winding drum 68 is driven in the winding direction of the winding rope 69, and the winding drum 68 is always driven in the winding direction of the winding rope 69.
Since a predetermined tension is applied to the winding rope 69, the winding rope 69 is automatically winded up as the ore collector 88 rises, so that the flexible pipe 90 does not bend and maintains a horizontal state. Also, main trolley traveling drum 50
and drives the auxiliary trolley traversing drum 59 to wind up the traversing ropes 51 and 64, and also to wind the traversing ropes 55 and 6.
0 is rewound, and the main trolley 30 and the auxiliary trolley 31 are moved sideways toward the derrick device 24 (see FIG. 11A).

During this traverse, the steady rest rope 99 is connected to the ore collector 88, and the steady rest drum 10 is connected to the ore collector 88.
0 to move the steady rest rope 99 to the ore collector 88.
Work while winding so that it does not swing horizontally. In addition, although the following work is performed while using a steady rest as appropriate, the explanation of the steady rest will be omitted in the following explanation.

When the ore collector 88 is transferred to the position A in FIG. The main trolley 30 and the auxiliary trolley 31 are wound up to be longer than the winding length of the auxiliary hoisting rope 42, and the main trolley 30 and the auxiliary trolley 31 are traversed toward the derrick device 24 by the main trolley traversing drum 50 and the auxiliary trolley traversing drum 59. For this reason, the ore collector 88 is A in FIG.
As shown in B and C, the orientation gradually changes in the vertical direction from the horizontal state and becomes approximately vertical. At this time, since a constant tension is always applied to the winding rope 68 in the winding direction, the winding rope 68 is automatically wound when the ore collector 88 starts up, and therefore the flexible hose 90 is It will not bend or bend downward.

When the ore collector 88 is in a substantially vertical state as shown in FIG.
The main trolley 30 is moved sideways to the tip of the girder 28 on the side of the derrick device 24, and the derrick device 24 is rotated and tilted around the gimbal bearing portion with respect to the upper deck so that the space on the upper deck side becomes larger.
As shown in FIG. 1D, the ore collector 88 is
is lowered into the moon pool 22 so that the upper end of the flexible tube 90 touches the lower workbench 9 of the derrick device 24.
When it descends to around 2, it is stopped at that position. The winding drum 68 is always driven in the direction of winding the winding rope 69 with a constant tension, but since the force is smaller than the weight of the ore collector 88, the ore collector 8
8 and the flexible tube 90, the winding drum 68 is rotated in a direction opposite to the direction in which tension is applied to the winding rope 69, and the winding rope 69 is unwound with a constant tension applied thereto. Therefore, the flexible pipe 90 remains upright without being bent and descends together with the ore collector 88.

When the ore collector 88 and the flexible pipe 90 have been lowered to a predetermined position, the derrick device 24 is rotated and tilted about the gimbal bearing in a direction in which the lower workbench 92 approaches the flexible pipe 90, as shown in FIG. 11D. On the other hand, as shown in FIG.
is stopped on the side closest to the portal crane 25, so when the derrick device 24 is tilted as shown in FIG. 11D, the flexible holder of the ore collector transfer device 93 in the derrick is 104 is inserted over the upper end of the flexible tube 90. Therefore, when the main hoisting drum 32 lowers the ore collector 88 and the flexible pipe 90, the support part 103 at the upper end of the flexible pipe 90 is supported by the in-derrick ore collector transfer device 93, and the ore collector 88 is moved inside the derrick. It is suspended from the ore collector transfer device 93.

Once the ore collector 88 is suspended via the flexible pipe 90 to the in-derrick ore collector transfer device 93 provided on the lower workbench 92 of the derrick device 24, the suspension beam 76 is moved as shown in FIG. 11E. Remove the ore collector 88 and the winding rope 69 from the flexible pipe 90, return the derrick device 24 to a state perpendicular to the upper deck, and move the ore collector 88 and flexible pipe 90 to the center of the derrick device 24. .

When the ore collector 88 is transferred to the center of the derrick device 24, the flexible pipe 106 is connected to the tip of the flexible pipe 90 of the ore collector 88 using the lifting device 107 in the derrick device 24, and the ore collector 88 is lowered slightly. From there, the in-derrick ore collector transfer device 93 is transferred to a predetermined location on the bow side and placed on standby. The support part 103 of the flexible pipe 90 of the ore collector 88 is held at a predetermined height from the lower workbench 92 by further suspending it using the lifting device 107, and the holding beam 105 in the lower workbench 92 is set and the material is transferred thereon. (11th
(See Figure E). In this state, the flexible tube 106 is removed, and the flange is aligned with the second flexible tube 108 that has been lifted up and down by the lifting device 107, and the flexible tube 106 is connected with bolts. Also, sequentially connect the flexible pipes 109,
The upper end is supported by the lifting device 107, and then the lifting device 107 is slightly raised to release and remove the grasping beam 105, and the ore collector 88 is lowered into the sea by lowering the lifting device 107 (see Fig. 11). reference).

Thereafter, the pipes are connected and the ore collector 8 is connected in the same manner as described above.
8 descending in sequence. Each tube connected to flexible tube 90 is sequentially transferred to derrick device 24 by tube storage and transfer device 94. Since each tube can be connected on the lower workbench 92 of the derrick device 24, there is no need for a diver to perform the connection work inside the moon pool 22 even when connecting the flexible tubes.

It should be noted that the present invention is not limited to the above-mentioned embodiments, and that the delivery of the ore collector to the derrick device can also be carried out by horizontally pulling it in with a rope without using the in-derk ore collector transfer device.
It goes without saying that various other changes may be made without departing from the gist of the present invention.

[Effects of the invention] According to the gate-type crane for transferring ore collectors of submarine resource mining vessels of the present invention, when transferring ore collectors to the lower workbench of derrick equipment, the flexible pipe connected to the ore collectors in advance can be safely transferred to the derrick equipment side together with the ore collector without swinging back and forth or from side to side even when the ship is shaking, and when connecting the next flexible pipe set in the derrick equipment, the lower part of the derrick equipment The connection work can be done on the workbench, and therefore there is no need for the diver to dive into the moon pool to connect the flexible tubes, making the connection work easier and faster and improving safety. , etc., can produce various excellent effects.

[Brief explanation of the drawing]

Figure 1 is an explanatory diagram of the gate-type crane for transferring the ore collector of a seabed resource mining vessel according to the present invention, and Figure 2 is the same as that shown in Figure 1.
3 is an explanatory diagram of the main trolley and main hoisting drum of the portal crane in Fig. 1, Fig. 4 is an explanatory diagram of the auxiliary trolley and auxiliary hoisting drum, and Fig. 5 is an explanatory diagram of the main trolley of the gantry crane in Fig. 1. An explanatory diagram of the main trolley traversing drum that causes the auxiliary trolley to traverse, FIG. 6 is an explanatory diagram of the auxiliary trolley traverse drum that causes the auxiliary trolley to traverse, and FIG. 7 is an explanatory diagram of the winding drum that pulls the flexible pipe connected to the ore collector. , Fig. 8 is an explanatory diagram of the suspension beams of the main trolley and auxiliary trolley, Fig. 9 is an explanatory diagram of the vicinity of the lower work platform of the derrick device where the ore collector is delivered by the portal crane of Fig. 1, and Fig. 10 is an explanatory diagram of the suspension beam of the main trolley and auxiliary trolley. The figure is a view in the direction of arrows X-X in Figure 9, Figures 11A to 11F are explanatory diagrams of the work procedure when the ore collector is transferred and delivered to the derrick device by the portal crane in Figure 1, and Figure 12 The figure is a general explanatory diagram of a submarine resource mining vessel. In the figure, 21 is the hull, 22 is the moon pool, 24 is the derrick device, 25 is the gantry crane, 26 is the gantry frame, 30 is the main trolley, 31 is the auxiliary trolley, 3
2 is the main hoisting drum, 33 is the main hoisting rope, 4
1 is an auxiliary hoisting drum, 42 is an auxiliary hoisting rope, 5
0 is the main trolley traversing drum, 51 and 55 are the traversing ropes, 59 is the auxiliary trolley traversing drums, 60 and 64 are the traversing ropes, 68 is the winding drum, 69 is the winding rope, 76 and 77 are the suspension beams, and 88 is the collection Mining machine, 9
0 is a flexible pipe, 92 is a lower workbench, 93 is an in-derrick ore collector transfer device, and 94 is a tube storage transfer device.

Claims (1)

[Scope of utility model registration request] It is equipped with a derrick device that can rotate in the longitudinal direction and width direction of the ship, and a tube storage and transfer device that transfers pipes from a tube storage shelf installed in front or rear of the derrick device to the derrick device, and the pipes are fed from the tube storage and transfer device. In a seabed resource mining ship, in which the pipes are sequentially connected by the derrick device and lowered into the sea, a main trolley and an auxiliary trolley capable of moving a girder section in the longitudinal direction of the ship are provided behind or in front of the derrick device; It has a hanging beam that is suspended from the main trolley and the auxiliary trolley so that the ore collector can be suspended, and a winding rope that can be connected to a flexible pipe connected to the ore collector, and when the ore collector is transferred. 1. A gate-type crane for transferring an ore collector of a seabed resource mining vessel, characterized in that a winding drum is provided that can constantly apply a predetermined tension to the winding rope.