JP3327515B2 - Split-assembly marine workboat - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work comprising at least three floaters, comprising a plurality of hexahedral floaters, and connecting means for connecting the respective floaters are provided on all side surfaces of the floaters. The present invention relates to a split-assembly type offshore workboat equipped with a barge and provided with a leg elevating device for raising and lowering the workboat.

[0002]

2. Description of the Related Art Offshore work platforms include, for example, oceans, lakes and marshes.
In the case of constructing and investigating structures in rivers, storage lakes, and the like, floating barges are known. Generally, the barges are integrally formed, so that it was impossible to carry them over land to the destination.

For this purpose, the present applicant has filed Japanese Patent Application No. 8-3935.
No. 7 and Japanese Patent Application No. 8-3931 proposed a split-assembly type. However, these proposed technologies have a small mounting capacity, and are insufficient for the work in which a large-scale construction machine is mounted.

[0004] Further, in the conventional split-assembled marine work platform boat, there is play in the joint device, and when the boat is lifted above the sea surface in order to prevent a decrease in work efficiency and unsafety due to shaking of the boat, This backlash causes deflection,
There was a problem in moving and setting up the machine.

[0005] Also, since the leg connection method is a flange type,
It is difficult to secure adequate strength, and the joints of the legs are welded together, and the barge lifting device can be attached only to the side of the barge. there were.

Japanese Unexamined Patent Publication (Kokai) No. 48-106101 discloses an offshore workbench for assembling a plurality of floaters. However, in such a known technique, since the lifting device is provided on the side surface of the floater, the position and the number of the lifting device are necessarily limited to the outer portion, and cannot be selected at an arbitrary position.

[0007]

SUMMARY OF THE INVENTION Accordingly, in view of the above-mentioned problems, the present invention is capable of setting a leg on the seabed or riverbed, keeping the working floor out of the water surface, and suppressing sway due to waves and currents. The purpose of the present invention is to provide a separately assembled marine work platform vessel that does not restrict the work area.

[0008]

According to the present invention, there are provided a plurality of hexahedral floaters, and connecting means for connecting the respective floaters are provided on all side surfaces of the floater. In a split-assembled marine work platform ship provided with a work platform boat composed of a floater and a leg lifting / lowering device for lifting the work platform boat, the connecting means is provided on a side surface (2a) of one of the floaters (2). The male connecting portion (5A) is provided on the side surface (3b) of the other floater (3) and the female connecting portion (6A) is provided. The male connecting portion (5A) has an inclined surface (5a) at its tip. And a projection (5) having a groove (7) in the middle, and the tip side (7a) of the groove (7) is inclined so that the lower part becomes narrower, and the female connecting part (6A) is formed. ) Is provided with a hole (6) for engaging with the projection (5). The convex portion (5) of said connecting member (15) of the U-shape is inserted into the groove (7) when engaged in said holes (6) are provided.

According to the present invention, the lifting device (1)
No. 0) is provided on the upper surface of the floater (2) so that the flange (F) is detachable by bolting.

Further according to the present invention, said leg (11)
The first part (21) and the second part (22) are connected by a connecting part (C) and fixed by a lock pin (23);
A pad (25) engaging with the lifting device (10) is fixed.

Also, according to the present invention, the connecting means can be arranged vertically.
It is provided in several places.

[0012]

Therefore, a work boat of any shape can be manufactured by connecting the floaters appropriately in the length direction and the width direction, and since each floater has a detachable lifting device, the position of the leg can be selected. Optional. Therefore, it is possible to easily construct a workboat adapted to the actual situation such as the ocean.

Since the connecting means is provided on the upper and lower sides, the engagement is reliable. Further, since the U-shaped connecting member may be inserted, the connecting operation is relatively easy even if there is a wave or the like. it can.

If two types of long and short floaters are prepared,
Further, a work boat with a special shape can be formed.

[0016]

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

In FIG. 1, a workboat generally designated by reference numeral 1 comprises a plurality of floaters 2 having legs 11 and a plurality of floaters 3 having no legs in the illustrated example.
The floater 2 is detachably provided by a lifting device 10 having a leg 11 provided with a pad 25 on the upper surface thereof by bolting a flange F. The lifting device 10
A lid provided with a hole for mounting may be closed on the floater 3 without the cover.

A plurality of male connecting portions 5A (FIG. 2) for connecting the floaters 2 to the side surfaces 2a of the respective floaters 2 (hereinafter, reference numeral 2 is a code representing the floaters), 2b includes a female connecting portion 6 which engages with the convex portion 5.
A hole 6 (FIG. 2) is provided. As shown, two sets of these connecting means 5, 6 are provided vertically.

FIG. 2 shows the details of the connecting means of the floater 2 composed of the convex portion 5 and the hole 6. The male connecting portion 5A is provided between the convex portion 5, the inclined surface 5a at the tip and the middle thereof. Groove 7
The side surface 7a on the tip end side of the groove 7 is inclined so that the lower part of the groove 7 becomes narrower. Then, referring to FIG.
The convex portion 5 is a male connecting portion 5 fixed to the side surface 2a of the floater 2.
A is fixed by a ring 17.

The female connecting portion 6A is provided with a hole 6 which engages with the convex portion 5, is fixed to the side surface 3b of the floater 3, and has a reinforcing member 8 having a guide function on the floater side.

In the embodiment in which the floaters 2 and 3 are connected, the U-shaped connecting member 16 having a pair of bar members 16, 16 formed in a single tapered shape as a whole is formed by the above-mentioned connecting member 16. The floaters 2 and 3 are configured to be inserted into a pair of grooves provided in the convex portion and to connect the floaters 2 and 3. Here, the connecting member indicated by reference numeral 17a connects the connecting member 15 used for the upper connecting portion and the connecting member 15 used for the lower connecting portion so that the upper and lower connections can be performed simultaneously. However, the connecting members 15 without the connecting members 17a may be used separately. Therefore,
The two connecting members 15 are inserted into the female connecting portion 6A in advance, and the male connecting portion 5A is slightly lifted.
And the connecting member 15 may be dropped.

FIG. 4 shows a leg 11, in which a first portion 21 and a second portion 22 are connected by a connecting portion C and fixed by a lock pin 23, and the leg 11 is provided on the outer periphery of the leg 11. A large number of pads 25 used for raising and lowering are fixed.

FIG. 5 is a partial cross-sectional view showing the details of the connecting portion of the leg 11, in which the first portion 21 of the leg 11 is welded to the first connecting cylinder 21a with a W, and the second portion 22 is formed of the second connecting tube 21a. Are welded to the connecting cylinder 22a. And their first
Is connected to the second connection cylinder 22a. Further, a hole into which a lock pin is inserted is penetrated through the fitting portion, and the lock pipe 26, a lock bolt 23a penetrating therethrough and the lock pipe 2
Nut 24 and lock nut 25 having an inclined surface on the 6 side
Is inserted.

FIG. 6 shows the lifting device 10, in which one end of a plurality of (two in the illustrated example) working cylinders 31 is attached to the main body 30, and a working chuck 32 is attached to the other end of the cylinder 31. I have. And body 3
A hold catch 33 is provided at the lower end of the zero.
Also, referring to FIG.
4 is configured so as to be inserted between the legs of the pad 25 in the axial direction.
In order to raise and lower the workboat, it engages with the upper end 25u of the pad 25.

The operation will be described below. Floater 2
Are transported by land to a shore near the construction site, and the floater 2 floats on the sea. While arranging the floater 3 without the lifting device inside so as to have a predetermined shape while holding the floater 3 inside, the convex portion 5 on the side surface of the floater 2 and the hole 6 are engaged, and the connecting member 15 is inserted from the upper portion and the upper and lower portions are inserted. A tapered rod-like member 16 is inserted into the groove 7 of the projection 5 of FIG.
In this case, the insertion is easy because the reinforcing member 8 functions as a guide, and the groove 7 and the rod-shaped member 6 are configured so that the inclined surfaces are engaged with each other. 6 and the floaters are firmly connected to each other without play, so that the rigidity of the connecting portion is increased.

When the connection of the floaters 2 and 3 is completed, the leg 11 is inserted from above the elevating device 10 with a crane, and the working cylinder 31 is driven by the elevating device 10 using a scale insect method.
, And the step of holding the leg 11 with the hold catch 33 and contracting the cylinder 31 is repeated to
1 is lowered, and when the leg reaches the seabed, the workbench can be lifted above the sea surface in the same manner. In this case, the upper end 25u of the pad 25 of the leg 11 is used. Note that the lowering (raising of the leg 11) may be performed by repeating the above-described opposite process.

8 to 11 show another embodiment of the present invention.

FIG. 8 shows an example in which two types of long and short floaters are used and three legs 11 are provided. In the figure, a, e, h, i,
j, l, m, o, p, q, s, and v indicate long floaters, and d, k, n, and r indicate short floaters. Legs 11 are provided on the floaters a, m, and v. FIG. 9 shows three legs 11 constituting a long and rectangular workboat using two types of floaters, long and short. In the figure, a, b,
c, e, f, o, p, q, s, t, v, w, x are long floaters, and d, g, r, u are short floaters.
The legs 11 are provided on the floaters a, q, and v, respectively.

FIG. 10 shows an off-center workboat with long floaters a, b, c, e, f, h, i, j,
l, m, o, p, q, s, t, v, w, x, and the short floaters are d, g, k, n, r, u. The legs 11 are provided on the floaters a, c, v, and x.

FIG. 11 shows an example in which a space 40 is formed at the center. Long floaters are a, b, c, e, f, h, j,
l, m, o, q, s, t, v, w, x, and the short floaters are d, g, r, u. Leg 11 is a floater a,
c, v, and x. Thus, work boats of various shapes can be manufactured.

[0031]

The present invention is configured as described above,
The following excellent effects can be obtained. (1) Since each floater can be firmly connected without play, even if the work boat is lifted above the sea surface, there is little distortion, and the machine can be easily arranged and moved. (2) Since welding is not necessary for connecting the legs, and the strength is large and there is no flange or the like on the outer periphery, the work is easy even when the water depth is large. (3) The degree of freedom of the mounting position of the lifting device is large,
The layout on the workboat is easy.

[Brief description of the drawings]

FIG. 1 is a perspective view of a marine work platform ship showing an embodiment of the present invention.

FIG. 2 is an exploded perspective view showing details of a connecting means of the floater.

FIG. 3 is a sectional view of a connecting means of the floater.

FIG. 4 is a side view of the leg.

FIG. 5 is a partial sectional view showing a connecting portion of the leg.

FIG. 6 is a view showing the lifting device of FIG. 1;

FIG. 7 is a view showing the working catch of FIG. 6;

FIG. 8 is a plan view showing an embodiment of the shape of the workbench according to the present invention.

FIG. 9 is a plan view showing another embodiment of the shape of the workbench according to the present invention.

FIG. 10 is a plan view showing still another embodiment of the shape of the workbench according to the present invention.

FIG. 11 is a plan view showing still another embodiment of the shape of the workbench according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Marine workboat 2, 3 ... Floater 5 ... Convex part 5A ... Male connection part 6 ... Hole 6A ... Female connection part 7 ... Groove 8 ... Reinforcement Member 10 ... Elevating device 11 ... Leg 15 ... Connecting member 16 ... Bar-shaped member 21 ... First part of leg 22 ... Second part of leg 23 ... Lock pin 25 ... Pat

Continuation of front page (58) Field surveyed (Int.Cl. ⁷ , DB name) E02B 17/00

Claims (4)

(57) [Claims] 1. A system comprising a plurality of hexahedral floaters,
A connecting means for connecting each of the floaters is provided on all side surfaces of the floater, provided with a workbench composed of at least three floaters, and provided with a leg elevating device for elevating and lowering the workboat. In the split-assembled marine work platform vessel, the connecting means is provided on the side surface (2a) of one of the floaters (2) and on the side surface (3b) of the other floater (3). Connection part (6A)
The male connection part (5A) has a slope (5a) at the tip and a projection (5) with a groove (7) in the middle.
The front end side (7a) of the groove (7) is inclined so that the lower side becomes narrower, and the female connecting portion (6A) has a hole (6) that engages with the convex portion (5). A U-shaped connecting member (15) which is provided and is inserted into the groove (7) when the projection (5) is engaged with the hole (6). Assembling type maritime workboat. 2. The apparatus according to claim 1, wherein said lifting device is a floater.
2. The split-assembly type offshore work platform ship according to claim 1, wherein a flange (F) is detachably provided on an upper surface of the vehicle by bolting. 3. The leg (11) comprises a first part (21).
And the second portion (22) are connected at a connection portion (C),
It is fixed with a lock pin (23) and the lifting device (1
3. The split-assembled marine work platform ship according to claim 2, wherein a pad (25) for engaging with (0) is fixed. 4. The split-assembled marine work platform ship according to claim 1, wherein the connecting means is provided at two places vertically.