JPS60174386A - Pull of large storage vessel into base - Google Patents

Abstract

PURPOSE:To pull in a storage vessel while controlling the attitude by arranging plural pulleys at the opposite sides of mooring area in oil reserve base then entraining plural ropes stopped to winches in front of pulling side over every other pulley and removing sequentially from pulley when the rope will approach to right angle. CONSTITUTION:A plurality of pulleys 41 are arranged on the foot posts 24 at the opposite sides in the mooring area 34 in oil reserve base. A plurality of ropes 44 having one ends stopped to winches 42 located on the quay 21 of base are entrained over each pulley 41 and stopped to a storage vessel 51. Two ropes are provided at one side and entrained over every other pulley 41. When pulling the storage vessel 51 by means of the winch 42, each rope 44 is removed from the pulley 41 as the angle made against each pulley 41 approaches to right angle. Consequently, the storage vessel 51 is pulled into the mooring area 34 while being guided the attitude through each rope 44, resulting in safe and smooth pull- in work without requiring large system.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for bringing a large oil storage vessel into its base or oil storage base.

In this specification, the tip direction at the base means the protruding direction of the oil-proof wall provided in a protruding manner on the seawall, that is, the fourth direction.
The left side of the figure is referred to as the "in" direction, and the opposite direction is referred to as the proximal direction. Therefore, the distal direction corresponds to the front in the retraction direction of the storage vessel, and the proximal direction corresponds to the rear in the same direction.

Prior Art In general, the base of this type of storage ship is equipped with various facilities such as dolphins, vertical mooring arms, oil walls, footnotes, etc.
It is important that the ship does not come into contact with and damage these facilities when pulling the storage ship into the base's mooring area. Therefore, it is conceivable to provide the same equipment for access and access to and from the shipbuilding dock within the base, but in this case, the scale of the base would be overwhelmingly larger than that of the shipbuilding dock, and as a result, a huge amount of equipment costs would be required.

Therefore, it is not much inferior in function to the loading/unloading equipment of a shipbuilding dock, and it is extremely economically advantageous.
There is a need for a method for pulling in storage vessels.

Purpose of the Invention The present invention has been made in response to the above-mentioned needs, and is capable of reliably preventing damage to various equipment within the base by controlling the attitude of the storage ship and pulling the ship into the base. The purpose of the present invention is to provide a method for retracting a storage vessel.

Structure of the Invention In order to achieve the above object, the storage ship retraction method according to the present invention includes arranging a plurality of pulleys in the length direction on both sides of the mooring area, and providing a winch in front of the mooring area in the retraction direction. Multiple wires from the winch are fixed to the front of the storage ship outside the mooring area in the pulling direction, the middle parts of the wires are passed through pulleys on both sides of the mooring area, and the storage ship is pulled into the mooring area by the winch's wire winding. As the ship is being pulled in, the wires are successively removed from the pulleys, and the storage ship is being pulled in while controlling its attitude.

Preferably, the above-mentioned pulley is one that allows the wire to be detached from the pulley as appropriate, and the wire is detached from the pulley when the angle of the wire through the pulley approaches a right angle. The attitude of the rear end in the direction can be controlled by the tugboat as necessary.

Embodiments and Operations Next, embodiments and operations of the present invention will be explained based on the drawings.

First, the structure of the quick-release pulley used in the method of this invention will be explained.

In Figures 1 and 2, (1) is the mountain base of the pulley, (2) is the connector, (3) is a pair of frames, and (4) and (5) is a pulley installed horizontally on frame (3). and a pulley arm, which can be freely raised and lowered relative to the frame (3) via the shaft (6). (7) is a release lever pivotally attached to the frame (3) via a shaft (8), which has a stopper part (7a) that locks the tip of the pulley arm (5).
Reference numeral 9) denotes a release handle pivotally attached to the frame (3) via a shaft (10), and this has a stopper part (9a) that locks the tip of the release lever (7). (11
) is a coil spring that biases the release handle in the anti-release direction, (12) is a wire hooked to the pulley, (13) is a member to prevent the wire from coming off, and (14) is a rotation of the pulley arm (5). It is a stopper that stops the movement.

In the pulley having the above configuration, a force is always applied to the pulley (4) in the right direction in the drawing due to the tension of the wire (12). Then, when the release handle (9) is pulled in the release direction, that is, in the direction of arrow (A) in Figure 2, a part of the stopper (9a) of the handle (9) comes off from the tip of the release lever (7). The lever (7) rotates in the direction of arrow LB), a part of the stopper (7a) of the lever (7) comes off from the pulley arm (5), and the arm (5) rotates in the direction of arrow (C). 3. As shown in figure 3, pulley (4)
) and the pulley arm (5) stand up vertically, and as a result, the wire (12) is detached from the pulley (4).

Next, the structure of the storage ship base will be explained.

In Figures 4 to 7, (21) is a seawall of the base, (22) is a J breakwater that is the outer shell of the base, and (23) is a breakwater installed parallel to the seawall (21) and breakwater (22). Each of these has multiple pedestals (
24). The breakwater (22) consists of a pair of oil walls (
It consists of a pair of fixed parts (25) connected to each end of the ship (23) and a movable part (26) between them, and when the ship is retracted, the anti-swivel part (26) is removed to form an opening. The pair of fixed parts (25) each have air fenders (
27) is provided.

Reference numeral (28) denotes a dolphin on the tip side provided at each tip end of the pair of oil-proof walls (23), and a roller fender (29) is provided on each opposing surface.

Furthermore, a tip side root mooring arm is attached to the tip end portion (30) of these dolphins (28) after the ship is retracted. Reference numeral (31) denotes a proximal dolphin provided at each proximal end of the pair of oil-proof walls (23), each of which has a proximal line mooring arm (32). (33)
is the frame G between the proximal dolphin (31) and the seawall (21).
It is an administrative passage bridge that has been constructed. In this way, the seawall (21), the breakwater (22), the pair of oil walls (23) and the management passage m
A mooring area (34) surrounded by (33) is formed.

The mooring area (34) is located at J3 in view of the storage ship of 1/> above.
multiple pedestals (24) on both sides, a dolphin (28) on the tip side
), the proximal dolphin (31) and the proximal side line mooring arm (33) are each provided with the quick release type pulley (41) described above, and the seawall (21) is equipped with four proximal winches. (42) was installed, and a breakwater (22) was installed.
) is provided with a winch (43) on the tip side. In addition, in places where there is no oil barrier with pedestals and a breakwater is installed instead, a pulley is installed on the breakwater instead of the pedestal. Divide the four proximal wires Ay-('44) from the four proximal winches (42) into two each on both sides of the mooring area (34), and place one on one oil-proof wall (23). Pass the wire (44) through a plurality of pulleys (41) every other time,
Pass another wire (44) through the remaining pulleys (41) every other time.

Similarly to the above, on the other oil-proof wall (23), the two base end wires (44) are connected to a plurality of pulleys (44), respectively.
Pass every other item through 1). In this way, each of the four proximal end wires (44) is stretched out over the distal end dolphin (38) and bundled here for the required length. Further, the tip side wire (45) from the tip side winch (43) is also bundled on the breakwater (22) by the required length.

First, as shown in Figure 4, the storage ship (51) to be pulled into the base is moved from the stern to the mooring area (3
4), and the stern, that is, the front end of the storage ship in the direction of retraction, is 100 to 150 m from the frontage of the breakwater (22).
When the position is reached, the leading end wire (45) on the breakwater (22) is fixed to the stern, and when the retracting operation reaches the opening device by the leading end winch (43), as shown in Fig. 5. , the proximal lie V-(44) bundled on the distal dolphin (28) is fixed to the stern, and the storage vessel (51) is further moved to the mooring area (34) using the proximal winch (42). pull towards.

When the turning vessel (51) reaches the frontage of the breakwater (22), the tip side lie 17-(45) is released from the stern, and from then on, it is retracted with the four-piece end side lie Ay-(44). do the work.

When the stern reaches a position near the pair of tip side dolphins (28), in other words, when the angle of the wire (44) formed via the pulley (41) on the dolphin (28) approaches a right angle, From this pulley (41), the proximal wire (river is +i+am).Then, the stern is moved to a position near the pulley (41) on the opposite pillar (24) closest to the pair of distal dolphins (28). When reached, the proximal wire (44) is detached from this pulley (41).In this way, the proximal wire (44) is successively detached from the pulley (41), as shown in FIG. so that the storage vessel is moored in the mooring area (
34). When the bow passes the rough part (26), the tip side wire (45) on the breakwater (22)
) is fixed to the bow of the ship, and the attitude of the storage vessel (51) is controlled by the proximal wire (44) passing through the pulley (41) on the proximal root mooring arm (32), as shown in Fig. 7. At the same time, the storage vessel (51) is directly pulled in by the proximal winch (42) via the proximal wire (44) detached from the pulley (41) on the proximal dolphin (31). After the retraction work is completed, a distal root mooring arm is attached to each of the pair of distal dolphins (28), and all wires are released.

During the retraction work, the attitude of the bow, ie, the rear end of the storage vessel, is always controlled by the tugboat (52).

Effects of the Invention According to the present invention, a plurality of pulleys are arranged in the length direction on both sides of the mooring area, a winch is provided in front of the mooring area in the pulling direction, and the winch is fixed in front of the lie in the pulling direction,
Pass the middle part of the wire through pulleys on both sides of the mooring area, pull the storage ship into the mooring area by winding the lie A7 of the winch, and avoid removing the wires from the pulleys as the ship pulls in. Therefore, the storage ship can be pulled into the mooring area while controlling the attitude of the storage ship, and therefore, damage to various equipment within the base can be reliably prevented.

[Brief explanation of the drawing]

Figure 1 is a plan view showing a quick release type pulley, Figure 2
The figure is a side view of the same pulley, Figure 3 is a side view of the same pulley showing the state in which Lie V- is detached, and Figures 4 to 7 are plan views showing the state in which the storage ship is pulled into the mooring area. be. (1)...Mountain base, (2)...Connector, [3)...Frame, (4)...Pulley, (
5)...Pulley arm, (6)...shaft, (7)...
・Release lever, (7a) ・Part of stopper, (
8)...Shaft, (9)...Release handle, (9a
)...part of the stopper, (10)...shaft, mouth 1)...
・Coil spring, (12)...Wire, (13)...
・Wire removal prevention member, (14)...stopper,
(21)... Seawall, (22)... Breakwater, (23)
...Oil barrier, (24) ... Pillar, (25) ... Nationally designated part, (26) ... Movable part, (27) ... Air fender-1 (28) ... Tip side dolphin, (29)
...Roller fender-1 (30)...Tip, (
31)...Proximal side dolphin, (32)...Proximal side root mooring arm, (33)...Management road bridge, (34)...
...Mooring area, (41)...Pulley, (42)...Proximal winch, (43)...Distal winch, (44)
...Proximal end wire, (45)...Distal end wire, (51)...Storage ship, (52)...Tugboat. 4 people other than above

Claims (3)

[Claims] (1) A plurality of pulleys are arranged lengthwise on both sides of the mooring area, and a winch is installed at the front of the mooring area in the pulling direction, and multiple pulleys from the winch are used to pull in the storage ship outside the mooring area. It is fixed to the front end Z in the direction, and the middle part of the wire A7 is passed through pulleys on both sides of the mooring area, and the storage ship is pulled into the mooring area by winding the wire hair 7 of the winch, and as the ship is being pulled in, A method for pulling a large storage ship into a storage ship base, in which wires are successively removed from pulleys and the ship is pulled in while controlling the attitude of the u1 storage ship. (2) The method according to claim 1, wherein the wire is detached from the pulley when the angle of W\7- formed through the pulley approaches a right angle. (3) The method according to claim 1 or 2, wherein the attitude of the rear end of the storage ship in the retraction direction is controlled by a tugboat.