JP3179452B1 - Manufacturing method of anchor for floating body mooring - Google Patents

Abstract

An anchor for mooring a buoy can be configured in a small size, can reduce manufacturing costs, and facilitate recycling. SOLUTION: A weight main body 4 is formed by combining a plurality of unit weights 6 formed of steel slabs and connecting them by tie rods 7. According to this, since the weight main body 4 is made of steel and has a large specific gravity, it is possible to configure the anchor 1 as a small body as a whole, and it is easy to recycle. Also, the unit weight 6
Is formed from steel slab, so no mold is required,
Manufacturing costs can be reduced. Moreover, the weight body 4
Is constructed by combining a plurality of unit weights 6, so that when the anchor 1 is discarded, the weight body 4 can be disassembled into a plurality of unit weights 6 if the connection is released. When it is reused as, it is easy to handle.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anchor for mooring a floating body which is submerged in water to moor a floating body such as a floating facility.

[0002]

For example, there is an anchor made of concrete for anchoring a buoy submerged on the sea floor. However, since concrete has a relatively small specific gravity, there is a problem that it is difficult to handle the buoy in order to gain the weight for mooring the buoy when transporting or sinking to the seabed. . Moreover, concrete anchors are large and have a greater buoyancy when submerged in the sea, so they are lighter in the sea than their actual weight (the sea weight is 57% of the air weight of concrete and 57% of the weight of steel. 87%), but its ability to fix buoys is low for its size. In addition, when the anchor is aging and discarded, it is difficult to reuse concrete as a resource, and it has to be disposed of.

[0003] In order to solve such a problem, there is an anchor made of cast iron. However, the cast iron anchor has a problem that the manufacturing cost is high because the mold must be manufactured in a one-to-one relationship at the time of manufacturing.
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a method for manufacturing an anchor for mooring a floating body that is small in size, can reduce manufacturing costs, and can be easily recycled.

[0004]

In order to achieve the above object, an invention according to claim 1 comprises a weight body submerged in water and a floating body such as a floating facility provided on the weight body for mooring strip members.
A method of manufacturing a floating body mooring anchor comprising a connecting member for connecting via a steel slab forming the strip plate
To form a plurality of unit weights, and then
By connecting a plurality of unit weights in a horizontal direction
And the connecting member is attached to the weight body.
It is characterized by having been attached .

According to this configuration, the weight body is made of steel and has a large specific gravity, so that the whole anchor for floating body mooring can be made compact. In addition, strip-shaped steel slabs are
By cutting by cutting, etc., the unit of the desired shape
Since the weight can be easily formed, the unit weight is manufactured.
A mold for manufacturing is unnecessary, and the manufacturing cost can be reduced. In addition, steel slabs are originally produced in the steelmaking process.
Since it is an intermediate product, the weight body made of steel slab is for steelmaking
Can be reused as a resource. Furthermore , since the weight main body is configured by connecting a plurality of unit weights, if the connection is released, the weight main body can be disassembled into a plurality of unit weights,
When reused as a resource, its handling becomes easy.

According to the second aspect of the present invention, a plurality of unit weights can be easily connected to each other to form a weight body by passing a connecting member through a through hole formed in the unit weight. In addition, since the through hole is opened outward through the slit, the unit weight is cut from the steel slab by gas fusing.
Gas to cut the outer circumference of the unit weight
Through holes can be formed continuously with the fusing .

According to the third aspect of the present invention, the connecting member is removed.
By sandwiching the support member to be attached between the unit weights
Since it can be attached to the weight body,
Can be easily attached . According to the invention of claim 4 , since the supporting portion is integrally formed on the unit weight body and the connecting member is rotatably attached to the supporting portion via the support shaft, it is necessary to manufacture the supporting portion as a separate member. Therefore, the manufacturing cost can be further reduced.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an embodiment in which the present invention is applied to a buoy anchoring moor for mooring a buoy.
This will be described with reference to FIG. FIG. 6 shows a state in which a buoy 2 as a floating body is moored by a buoy mooring anchor (hereinafter simply referred to as an anchor) 1. They are connected by a chain 3 as a strip member. As shown in FIGS. 1 to 4, the anchor 1 includes a weight main body 4,
The weight body 4 includes a suspension ring 5 serving as a connection member, and the chain 3 is connected to the suspension ring 5. Incidentally, the anchor 1 of this embodiment weighs 8 tons, and its weight body 4 has a horizontal dimension of 110 cm, a depth dimension of 110 cm, and a height dimension of 91 cm.

The weight body 4 is formed by connecting a plurality of plate-shaped unit weights 6 with tie rods 7 as connecting members. The unit weight element 6 is either found manufactured steel iron slab. Here, the steel iron slab in steelmaking, the steel after refining is formed in a strip plate material, for example by continuous casting, is obtained by cutting the strip plate material to a predetermined length.
To obtain a steel iron slab or we unit weight element 6, the steel slab which is already in a plate shape formed by cutting into a desired outer shape by the gas blown.

[0010] The unit weight member 6 of this made of steel slab, as shown in FIG. 5
As shown in FIG. 2, through holes 8 are formed in the upper center and lower left and right sides, and the through holes 8 are opened outward through narrow slits 9.

When the through hole 8 is opened outward through the slit 9, the through hole 8 can be formed by gas fusing. That is, in the present embodiment in which the unit weight 6 is obtained from the steel slab by gas fusing, it is advantageous in terms of cost if the through hole 8 can be formed by gas fusing, not by machining. In this case, it is difficult to immediately blow gas flame onto the surface of the unit weight 6 to start gas fusing from a position inside the outer periphery. Therefore, it is necessary to form a closed hole in the unit weight 6 by gas fusing. Is difficult. However, if a gas flame is blown to the outer periphery of the unit weight 6 in the plate thickness direction, the portion can be gas-blown. Even if the plate thickness of the unit weight 6 is thick, if gas blowing is started from the outer peripheral surface, It becomes possible to advance the gas fusing to the inside. For this reason, by forming the through hole 8 outward through the slit 9 as in the present embodiment, the gas fusing is started from the outer periphery of the unit weight 6 to form the slit 9, and Through holes 8 can be formed continuously with the slits 9.

The tie rods 7 are passed through the through holes 8 thus gas-blown, and the plurality of unit weights 6 are connected by the tie rods 7. At both ends of the tie rod 7, stopper plates 10, 11 as stoppers are fixed by welding, and the stopper plates 10, 11 prevent the unit weight 6 from coming off. One of the two stop plates 10 and 11 is fixed to one end of the tie rod 7 by welding in advance, and the other stop plate 11 connects the tie rod 7 to the plurality of unit weights 6. After passing through the through hole 8, the tie rod 7 is also welded.
It is fixed to.

Among the plurality of unit weights 6 constituting the weight body 4, between the center unit weight and the two unit weights on both sides thereof are located at the upper center and serve as support members. The support plate 12 is sandwiched, and plate spacers 13 having the same thickness as the support plate 12 are sandwiched between the left and right sides of the lower portion. The upper halves of a pair of support plates 12 located on both sides of the center unit weight 6 project upward from the weight main body 4, and support holes 14 formed in the projecting portions are formed.
Both ends of a support shaft 15 that rotatably supports the suspension ring 5 are passed through. A stop plate 16 is welded to both protruding ends of the support shaft 15, and the stop plate 16 prevents the support shaft 15 from falling out of the support hole 14.
Sleeves 17 are fitted to the support shaft 15 on both sides of the suspension ring 5 to prevent the suspension ring 5 from moving in the large axial direction.

As shown in FIG. 5, the support plate 12 has a through hole 18 and an elongated hole 1 extending upward from the through hole 18.
9 are formed. In addition, the plate-like spacer 13 includes
A through hole 20 and a slit 21 for opening the through hole 20 outward are formed. The tie rods 7 for connecting the unit weight 6 are passed through the through holes 18 and 20 of the support plate 12 and the plate-shaped spacer 13, whereby the support plate 12 and the plate-shaped spacer 13 are connected to the unit weight 6.
It is made so that it does not fall out from between.

In order to prevent the support plate 12 from rotating around the tie rod 7, a long hole 19 in the support plate 12 is provided.
The plate-shaped stopper 22 passed through the slit 9 of the unit weight 6
It is fitted in. In addition, the plate-like stopper 22 is a long hole 1
9. Since the plate-like stopper 22 is relatively loosely fitted in the slit 9, a pair of stopper pieces 23 for preventing the plate-like stopper 22 from being displaced in the lateral direction and coming out of the elongated hole 19 are formed in the slit 9 of the unit weight 6. And is fixed to the unit weight 6 by welding. Similarly, in order to prevent the plate-like spacer 13 from rotating around the tie rod 7, a plate-like stopper 24 is fitted over the slit 21 of the plate-like spacer 13 and the slit 9 of the unit weight 6. It is fixed to the unit weight 6 by welding. Note that the suspension ring 5 and the support plate 12 are formed of special steel having high hardness to provide wear resistance.

Before the three tie rods 7 are passed through the plurality of unit weights 6, the through holes 8, 18, and 20 of the support plate 12 and the plate-like spacer 13, a rubber washer 7a as an elastic member is provided. Are mounted. This rubber washer 7
a is a stopper plate 10 previously welded to one end of the tie rod 7.
It is pushed to the position where it touches. Then, after the tie rod 7 is passed through the through holes 8, 18, and 20, the stopper plate 11 is welded to the other end of the tie rod 7, whereby the plurality of unit weights 6 become the support plate 12 and the plate-like spacer. 13 are sandwiched. At this time, the plurality of unit weights 6, the support plate 12, and the plate-like spacer 13 are joined in a state of being in close contact with each other, so that the tie rod 7 does not rattle in the axial direction. The rubber washer 7a is interposed between the stopper plate 10 of the tie rod 7 and the unit weight 6.

According to the anchor 1 configured as described above, since the weight body 4 is formed of steel having a large specific gravity, the anchor 1 as a whole can be made small. For this reason, it is easy to handle and easy to transport to the installation sea area,
Since the buoyancy when submerged on the sea floor is small, the degree of weight reduction in the sea is small, and the reliability of fixing the buoy 2 is high for a small size.

Moreover, in this embodiment, since the weight body 4 of the anchor 1 is formed by connecting a plurality of unit weight bodies 6 formed of a steel slab, unlike the conventional cast iron one,
No mold or the like is required, and the manufacturing cost can be reduced. In addition, since the steel anchor 1 can be used as a raw material for steelmaking as iron scrap when it is aged, recycling is easy. In addition, if the tie rod 7 is cut, the weight main body 4 can be disassembled into a plurality of unit weights 6,
It is easy to handle when it is reused as a resource, making it easier to recycle.

In this embodiment, since the rubber washer 7a is interposed between the stopper plate 10 of the tie rod 7 and the unit weight 6, when the unit weight 6 is rusted by the influence of seawater, Even if the entire weight body 4 expands in the axial direction of the tie rod 7 due to rust generated between the mating surfaces of the unit weights 6,
The expansion is absorbed by the rubber washer 7a. For this reason, an excessive force does not act on the stopper plates 10 and 11 of the tie rod 7, and the durability is excellent.

The chain 3 moves due to the floating of the buoy 2 and rubs against the suspension ring 5. In order to reduce wear at this time as much as possible, the suspension ring 5 is formed of abrasion-resistant special steel. Need to be replaced. In this case, in this embodiment, the suspension ring 5
Is attached to the support plate 12 via the support shaft 15, so that the suspension ring 5 can be easily replaced by removing one of the stopper plates 16 from the support shaft 15.

7 to 9 show another embodiment of the present invention.
The anchor 25 of this embodiment is designed to cope with an increase in weight, and the plurality of unit weights include a plurality of first unit weights 26 having a large lateral dimension and the first unit weight 26. The second unit weight 27 includes a plurality of second unit weights 27 having a larger vertical dimension than that of the second unit 26 but a smaller horizontal dimension.

Then, two second unit weights 27 are arranged laterally between the first unit weights 26, and the first and second unit weights 26 and 27 are connected to a tie rod 28 as a connecting member. , 29 to form a weight body 30. In this weight body 30, the upper part of the second unit weight 27 protrudes upward from the first unit weight 26,
This protruding part is used as a support part 31. This support 31
A support shaft 32 is passed between them, and a suspension ring 33 as a connecting member is rotatably supported on the support shaft 32. In the present embodiment configured as described above, the support portion 31 is formed integrally with the second unit weight 27, so that the assembling labor can be reduced as compared with a case where the support is formed separately.

The tie rod 2 is attached to the first unit weight 26.
Through holes 34 and 35 formed for passing 8 and 29 therethrough are opened outward through slits 36 and 37, respectively. Further, a through hole 38 formed in the support portion 31 of the second unit weight 27 for passing the support shaft 32 is opened outward through a slit 39, and a second hole for passing the tie rod 28 is provided. The through hole 40 formed in the unit weight 27 is opened to the through hole 38 through the slit 41, and the through hole 42 formed in the second unit weight 27 for passing the tie rod 29 is formed as a slit. It is open outward through 43. Thereby, the through holes 34, 3
5, 38, 40, and 42 can be formed by gas fusing.

The present invention is not limited to the embodiment described above and shown in the drawings, but can be extended or modified as follows. A plurality of weight bodies 4 shown in the first embodiment may be connected in the lateral direction to form a high-weight anchor. The connecting member is not limited to the tie rods 7, 28, 29, and a shaped steel may be used. The present invention is not limited to anchors for mooring buoys, but can be widely applied to mooring of floating bodies in general.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a front view

FIG. 3 is a side view

FIG. 4 is a plan view

FIG. 5 is an exploded perspective view.

FIG. 6 shows an example of use.

FIG. 7 is a front view showing another embodiment of the present invention.

FIG. 8 is a side view.

FIG. 9 is a plan view

[Explanation of symbols]

In the figure, 1 is an anchor, 2 is a buoy, 3 is a chain (a mooring member), 5 is a suspension ring (connecting member), 6 is a unit weight, 7 is a tie rod (connecting member), and 7a is a rubber washer (elasticity). Members), 10 and 11 are stop plates (stop portions), 12 is a support plate (support member), 14 is a support shaft, 25 is an anchor, 26 is a first unit weight, 27 is a second unit weight, 28 and 29 are tie rods (coupling members), 30 is a weight body, 31 is a support,
32 is a support shaft, 33 is a suspension ring (connection member), 34, 35,
38, 40, 42 are through holes, 36, 37, 39, 41,
43 is a slit.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model Showa 48-78595 (JP, U) Japanese Utility Model Showa 49-63692 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B63B 21/26 B63B 21/29

Claims (4)

(57) [Claims] A weight body submerged in water and a floating body provided on the weight body, such as a floating facility, are connected via a mooring strip member.
Ltd. The floating body mooring anchor comprising a connecting member for connecting
In the method of manufacturing, a plurality of unit weights are cut by cutting a strip-shaped steel slab.
And then combine the unit weights together.
The weight body constitutes a method for producing a floating mooring anchor, characterized in that fitted with the connecting member to the weight body by a. Wherein said unit weight element has a through hole that opens to the outside via the slit, a plurality of unit pyramidal includes a feature to be bound by the binding member through this through hole The method for producing a floating mooring anchor according to claim 1. 3. A unit weight when said plurality of unit weights are combined.
A supporting member is sandwiched between the bodies, and the connecting member is connected to the supporting member.
Material is rotatably mounted via a support shaft
A method for manufacturing the anchor for mooring a floating body according to claim 1 or 2.
Law . 4. A support unit is integrally formed on said plurality of unit weights.
Formed, and the connecting member is rotated on the support portion via a support shaft.
The method for producing a floating anchor according to claim 1 or 2, wherein the anchor is attached so as to be capable of being attached .