JP3062853B2 - Pipe transfer device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe transfer device used for transferring a pipe suspended from an offshore floating body to the sea floor on the floating body.

[0002]

2. Description of the Related Art In the excavation work on the seabed, a pipe of a required length is suspended vertically from an offshore floating body, and is suspended while being successively added to reach the seafloor. Although the pipes are arranged, when the pipes are sequentially suspended from the floating body, it is necessary to transport the pipes from the storage position to the suspension position of the pipes.

Conventionally, as a method of transporting such a pipe from a storage position to a hanging position, as shown in FIG. 3, two ends or both ends of a pipe a stored horizontally in a storehouse of a floating body are used. A rope b is hung at a nearby location, and the rope b is hung by the hook c of the crane and transported with the pipe a lying sideways while maintaining the attitude of being transported by the stay d. The reality is that they are fixed and hung.

[0004]

However, in the above-mentioned conventional pipe transfer method, a worker is required to sling when hooking on a hook c of a crane, and safety is low in a place where a foothold is poor. It is difficult to secure, the rope b hanging the pipe being transported due to the movement of the floating body due to the waves sway, it is dangerous and it is difficult to perform the ground cutting and landing work, and the posture of the pipe being transported There are problems such as the need for additional work and personnel, such as taking a stay d to maintain.

Accordingly, the present invention is directed to a pipe conveying apparatus which can safely and surely convey a pipe along a conveying route, thereby improving work safety, workability, labor saving and labor saving. It is intended to provide.

[0006]

In order to solve the above-mentioned problems, the present invention lays a rail extending from a pipe storage position toward a pipe suspension facility on a ceiling in a storehouse of a floating body.
A pipe lifting jig is attached to the hoist running along the rail so as to be able to move up and down, and the upper end and the lower end of the pipe attached to the pipe lifting jig and conveyed vertically are separately guided from both sides. An upper pipe guide device and a lower pipe guide device are provided in parallel with the rail, and further, on the pipe hanging equipment side, there is an oblique transfer path extending to the pipe hanging position, and the pipe is transferred in a vertical state. Receiving the pipe, it can be turned up and down along the oblique transport path, and the pinion is engaged with the rack on the oblique transport path to automatically transport the pipe to the pipe hanging position. It is configured to include a lifting type elevator device.

[0007]

A jig for lifting a pipe is attached to the upper end of a pipe stored vertically, and then the jig for lifting a pipe is lifted to lift the pipe. Then, the hoist is caused to travel along a rail. As a result, the pipe is transported in a vertical state. During this transportation, the upper and lower ends of the pipe are guided by the upper and lower pipe guide devices, so that the pipe is transported without swinging even if the floating body swings. The pipe conveyed to the pipe hanging facility is automatically conveyed to the hanging position along the diagonal conveying path by the elevating elevator device, so that the conveying operation is performed efficiently.

[0008]

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

FIGS. 1 and 2 show an embodiment of the present invention, in which a pipe 3 can be stored vertically in a warehouse 2 of a floating body 1 floating on the ocean. A hoist which is provided with a rail (monorail) 5 extending from the pipe storage position in the direction of the tower 4 as a pipe hanging facility, and on which a roller 7 is rotated by a driving device (not shown) to be able to run on its own. 6 is mounted so that it can run freely.

A pipe lifting plug 8 is attached to the hoist 6 at the lower end so as to be able to move up and down by, for example, screwing, and a pipe lifting jig is attached to the pipe lifting plug 8. 9 is supported and the upper end of the pipe 3 is fixed to the upper end of the pipe 3 with a bolt 10 or the like by using the flange portion 9a of the pipe lifting jig 9, and the pipe 3 is vertically extended by the hoist 6 (vertical state). The transport route determined in step 5 is transported.

A pipe guide beam 11 as an upper pipe guide device guided by the upper end of the pipe 3 is provided on the transport route to prevent the pipe 3 conveyed vertically from swaying during transport. Pipe guide beam 1 as lower pipe guide device for guiding the lower end of pipe
2 are installed in parallel with the rails 5 so that the pipe 3 can be safely and efficiently transported along the transport route.

The turret 4 as the above-mentioned pipe suspending equipment is erected at the position of the opening 1a provided in the floating body 1 for suspending the pipe 3 in the sea, and the turret 4 has a sheave 13 attached to the top. The wire rope 15 wound around the winch 14 is wound around the sheave 13 and the hook 16 so that the hook 16 can be moved up and down by the winding and feeding operations of the wire rope 15.

At a position between the end of the rail 5 on the side of the tower 4 and the tower 4, an inverting type for raising the pipe 3 conveyed by the hoist 6 along the rail 5 to the upper position of the tower 4. An elevator device 17 is installed so that the pipe conveyed in the vertical state can be tilted obliquely and lifted obliquely upward, and the raised pipe 3 is suspended on the hook 16 via a lifting jig 18. Lower and support.

Reference numeral 19 denotes a pipe that has been added.

In order to suspend the pipe 3 stored vertically in the warehouse 2 of the floating body 1 to the sea floor, the pipe 3 is to be transported when it is transported to the flip-type elevator device 17 shown in FIG. After attaching a pipe lifting jig 9 provided on the hoist 6 to the upper end of the pipe 3, the pipe lifting jig 9 is lifted to slightly lift the pipe 3. Next, the hoist 6 is run on the rail 5.
As a result, the pipe 3 is transported in a state of standing upright.

While the pipe 3 is being conveyed, the upper end and the lower end of the pipe 3 are guided by the pipe guide devices 11 and 12, respectively, so that the pipe 3 is conveyed without shaking, and is safely and efficiently provided. Conveyed.

The pipe 3 conveyed to the target position as described above is cut off from the hoist 6, then received by the elevating elevator device 17, conveyed obliquely upward, and hung from the top of the tower 4. Lifting jig 1 on hook 16
8 is supported.

The elevating elevator device 17 includes a frame 17a for receiving the pipe 3, pinions 17b and 17c attached to the frame 17a, and a conveying path 1 in an oblique direction.
7d, and an arc-shaped rack 17f for guiding the frame 17a for tilting the pipe 3 from the vertical state to the oblique state. The pinion 17b meshes with the rack 17e, and the pinion 17c Meshes with the rack 17f, and the rotation of the pinion 17c causes the frame 1 to rotate.
7a is tilted from the vertical state to the oblique state together with the pipe 3, and the frame 17a is rotated by the rotation of the pinion 17b.
Together with the rack 17e.

The pipe 3 hung by the hook 16 is hung so that the lower end thereof abuts on the upper end of the pipe 19 held by the tower 4. The lower end of the pipe 3 is connected to the upper end of the pipe 19 which is added to the lower end of the pipe 3. Are connected and added.

When the refilling operation is completed, the holding of the pipe 19 is released and the upper end of the pipe 3 is lowered to a position where it is held by the tower 4. Thereafter, the pipes are successively replenished and the pipes are lowered to the seabed. .

[0021]

As described above, according to the pipe conveying apparatus of the present invention, the rail extending from the pipe storage position to the pipe suspension facility is laid on the ceiling in the storehouse of the floating body, and travels along the rail. Pipe guide for mounting a pipe lifting jig on a hoist to be lifted up and down, and separately guiding the upper end and the lower end of a pipe which is attached to the pipe lifting jig and conveyed vertically, from both sides. A device and a lower pipe guide device are provided in parallel with the rail, and further, on the pipe hanging equipment side, there is an oblique conveying path extending to a pipe hanging position, for receiving a pipe conveyed in a vertical state. The pipe can be moved up and down along the oblique transport path, and a pinion meshes with a rack on the oblique transport path to automatically transport the pipe to the pipe hanging position. Because as To becomes comprise Aru electromotive retractable elevator apparatus configured it can achieve the following such excellent effects. (i) After the pipes are stably and reliably transported to the pipe suspension facility along the transport route in the warehouse determined by the rails, the elevator is turned upside down to the pipe suspension position along the diagonal transport path. The pipe can be automatically transported by the device, and the pipe can be efficiently transported to the pipe hanging position. (ii) When transporting the pipes stored in the warehouse to the pipe suspension facility, the pipes are transported vertically along the rails at the ceiling in the warehouse.
The slinging operation by a human hand associated with the conventional crane hanging is not required, and the space required along the transport route determined by the rail can be minimized. (iii)
By remotely controlling the hoist and the elevator system, labor saving and efficiency can be achieved. (iv) When transporting the pipe from the pipe storage position in the storehouse to the pipe suspension facility, the upper and lower ends of the pipe are guided by the upper and lower pipe guide devices, so that the floating body is shaken. Even when the pipe is in the upright position, the pipe in the vertical state can be conveyed without swinging, thereby improving workability.

[Brief description of the drawings]

FIG. 1 is a front view of a pipe conveying device according to the present invention.

FIG. 2 is a side view showing an embodiment in which a pipe conveyed by the pipe conveying device of the present invention is moved to a suspended position on a tower.

FIG. 3 is a schematic view showing a conventional pipe transfer procedure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Floating body 2 Kuranai 3 Pipe 4 Tower (Pipe hanging equipment) 5 Rail 6 Hoist 9 Pipe lifting jig 11 Upper pipe guide beam (Pipe guide device) 12 Lower pipe guide beam (Pipe guide device) 17 Elevating type elevator device 17a Frame 17b, 17c Pinion 17d Diagonal transport path 17e, 17f Rack

Continuation of front page (56) References JP-A-4-12993 (JP, A) JP-A-3-561 (JP, A) JP-A-1-229794 (JP, A) JP-A-61-18693 (JP) JP-A-3-276861 (JP, A) JP-A-60-154325 (JP, U) JP-A-59-43502 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB B66C 11/00-11/12 B66C 9/00-9/18 B66C 13/06 B66C 17/00-17/26 B66C 19/00-19/02

Claims (1)

(57) [Claims] 1. A rail extending from a pipe storage position to a pipe suspension facility is laid on a ceiling in a storehouse of a floating body,
A pipe lifting jig is attached to the hoist running along the rail so as to be able to move up and down, and the upper end and the lower end of the pipe attached to the pipe lifting jig and conveyed vertically are separately guided from both sides. An upper pipe guide device and a lower pipe guide device are provided in parallel with the rail, and further, on the pipe hanging equipment side, there is an oblique transfer path extending to the pipe hanging position, and the pipe is transferred in a vertical state. Receiving the pipe, it can be turned up and down along the oblique transport path, and the pinion is engaged with the rack on the oblique transport path to automatically transport the pipe to the pipe hanging position. A pipe conveying device comprising a raising / lowering type elevator device.