JP2541897B2 - Installation method of shallow water bowling turret and its turret 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 shallow water boring turret installation method and a turret apparatus which can be installed in an arbitrary place in a short time without using a crane ship.

[0002]

2. Description of the Related Art Conventional shallow-water boring turrets are constructed by hoisting a turret assembled on land by using steel frames or scaffolding pipes, etc., and carrying it to a boring point for installation. In some cases, a worker dives and assembles a boring turret by combining scaffolding pipes and the like underwater.

[0003]

However, in the prior art, for example, in which a boring turret assembled on land is hoisted by a crane ship and transported, the cost of using the crane ship is high, and the water depth is shallow due to the tide. Cranes and tugboats may not be used under certain conditions, which limits time, and there is also the problem of poor mobility due to the inability to freely relocate or evacuate.

Since it is difficult to adjust the height of the legs grounded to the seabed, even if the legs are buried in the sludge zone and the turret is inclined,
The only way to correct the vertical direction is to adjust the boring machine shim to obtain the verticality, which is very troublesome.

Further, when a worker dives and assembles a boring turret, it is dangerous and it takes extra time, and there is a problem that diving work in winter places a heavy burden on the worker.

The present invention has been made in order to solve the above conventional problems, and the purpose thereof is to be able to erected at an arbitrary place in a short time without using a crane ship, It is maneuverable and can shorten the construction period, and it can be easily installed vertically even on sloping ground, leveled horizontally, and can be easily corrected even when tilting during work. An object is to provide an installation method and a tower device thereof.

[0007]

In order to solve the above problems, in the method for installing a shallow water bowling turret according to claim 1 of the present invention, a lower part of the turret leg and a buoyant body are provided on the side surface of the shallow water bowling turret assembled on land. Adjust the length of the tied wire and connect the buoyancy body to an arbitrary height, adjust the height of the buoyancy body after towing to the bowling position with the lower end of the boring turret levitated from the sea bottom by the buoyancy body. Then, the lower end of the boring turret is landed on the seabed to set the boring turret at a predetermined position.

Further, in the shallow water bowling turret apparatus according to claim 2, a shallow water bowling turret having a deck for mounting a boring machine; and the bowling turret being connected to an arbitrary height of a side surface of the bowling turret from the seabed. A buoyant body to be levitated; a means for adjusting the height of connection of the buoyant body to the bowling turret, which comprises a hydraulic winch for winding and unwinding a wire wound between the buoyant body and a sheave attached to the lower part of the boring turret leg;
It was configured with.

Further, in a shallow water bowling turret apparatus according to a third aspect, in the shallow water bowling turret apparatus according to the second aspect, the boring turret is provided with expansion and contracting means at four corners for grounding to project at arbitrary heights. It was configured.

[0010]

In the method of installing a shallow water bowling turret according to the first aspect of the present invention, since the bowling turret is levitated by the buoyant body, it can be towed to an arbitrary boring point from the assembly place by a tugboat. It can also be easily moved by a tugboat during relocation or during an emergency evacuation. After arranging the boring turret at a predetermined boring point, the boring turret can be installed at a predetermined position by lowering the boring turret or projecting the lower end of the boring turret to land on the seabed. You can start working. In this case, the buoyancy body may be removed.

In the shallow sea boring turret apparatus according to the second aspect, the shallow sea boring turret for mounting the boring machine on the deck can be floated above the sea by the buoyant body, so that it can be towed to the site by a tugboat. it can. At the site, after the shallow water bowling turret is accurately placed at the boring point, the buoyant body is moved above the shallow water bowling turret by the connecting height adjusting means to adjust the underwater height of the shallow water bowling turret. The bottom of the turret can be landed on the bottom of the sea, and the boring machine can be placed on the sea at the boring point. After the boring is completed, the buoyant body is arranged at the lower end side of the shallow water bowling turret by the connecting height adjusting means to lift the shallow water bowling turret from the seabed and move it to the next boring point again by a tugboat or return it to the home. be able to.

In the shallow water bowling turret apparatus according to the third aspect, the shallow water bowling turret is arranged at the boring portion, and then the grounding legs at the four corners are projected by the expanding / contracting means to be grounded to the seabed. It can be placed on the sea at some point. In this case, if the seabed is tilted or one of the grounding feet sinks into the sludge during work and the shallow water bowling tower tilts, adjust the height of the grounding feet at the four corners to adjust The boring turret can be fixed vertically and the level can be kept horizontal.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings. 1 is a front view showing a shallow water bowling turret apparatus according to the present embodiment, FIG. 2 is a front view showing a shallow water bowling turret apparatus, and FIG. 3 is a method for installing the shallow water bowling turret apparatus (a), (b), ( It is explanatory drawing shown in order of c) and (d).

First, the structure of the embodiment will be described. The shallow water bowling turret apparatus A of this embodiment is a shallow water bowling turret 1.
, Floater 2, connecting height adjusting means 3, and grounding leg 4
And the expansion / contraction means 5 are the main components.

The shallow water boring turret 1 is for arranging the boring machine 10 on the sea at a boring point. Square tube-shaped legs 11 are arranged at the four corners, and a brace 12, a truss 13, and a horizontal tie member are provided in each of them. 14 and the like are assembled so that they can be disassembled by bolting and connecting them. Further, a deck 15 on which the boring machine 10 is mounted is detachably provided on the upper portion of the shallow water boring turret 1. In the figure, 16 is a hanging piece for hanging a wire when it is lifted by a tow truck, and 17 is a casing pipe.

The floater 2 is a shallow water bowling turret 1.
A buoyant body for imparting buoyancy to the shallow water, which is arranged on both sides of the shallow water bowling turret 1 and is equipped with a boring machine 10, a tripod 10a, a bowling rod 10b, and other equipment. Bowling turret 1 on the seabed 6
It has enough buoyancy to float from above. In the figure, 20 is a hook for mooring, 21 is a wire, 22 is an anchor, and 23 is a wire connecting the floaters 2 and 2.

The connecting height adjusting means 3 adjusts the relative position of the shallow water boring turret 1 and the floater 2 in the height direction, and includes a hydraulic winch 30 fixed to the floater 2 and a floater. 2 and the sheaves 31, 32 fixed to the lower end of the leg 11 of the shallow water bowling turret 1, one end of which is fixed to the floater 2 through the sheave 32 of the leg 11 and the sheave 31 of the floater 2 in this order, and the other end It is formed by the wire 33 wound around the drum of the hydraulic winch 30.

The grounding leg 4 is a shallow water boring turret 1.
Is erected on the seabed 6, and is formed in a rectangular tube shape and is inserted into the leg 11 from the upper end side. A floor plate 40 having a large ground plane is provided at the lower end of the grounding leg 4, and a projection 41 is provided on the lower surface of the floor plate 40.

The expansion / contraction means 5 connects the grounding leg 4 to the leg 1.
The boring turret 1 for shallow water is stably erected even if the seabed has undulations or slopes by projecting an appropriate amount from the hydraulic cylinder 50. The part is connected to the upper end of the grounding leg. In the figure, reference numeral 51 denotes a hydraulic pressure generator including an operation unit capable of independently controlling the four grounding legs 4, and reference numeral 52 denotes a hydraulic pipe connecting the hydraulic pressure generator and the hydraulic cylinder 50.

Next, the installation method will be described. First, using a tow truck or the like, the legs 11 are erected on the land at rectangular four corner positions at predetermined intervals, and the brace 12, truss 13, lateral tie member 14, deck 15, etc. are bolted and assembled. In this case, the grounding legs 4 are inserted into the legs 11, respectively. (See FIG. 3A).

The hanging piece 16 is slung and the shallow water bowling turret 1 is moved to the sea by a tow truck or the like. Then, the floaters 2 are arranged on both sides of the shallow water boring turret 1, the wires 33 of the hydraulic winch 30 are passed through the sheaves 31, 32, and then one end is fixed to the floater 2 itself. And wire 3
Adjust the length of 3 and hold the shallow water boring turret 1 in a state where it is lifted by the floater 2 to a height where the tip of the protrusion 41 of the floor plate 40 secures a position higher than the water depth to the boring point (see FIG. 3B). .

In this state, the boring machine 10, the hydraulic pressure generator 51, the tripod 10a, and other necessary equipment are mounted to form the shallow water boring turret 1, and the hydraulic piping and the like are completed.

The shallow water bowling turret 1 is towed to the site by the tugboat 60 and is placed at a predetermined boring point (FIG. 3).
(C)).

By advancing the hydraulic cylinder 50 with the hydraulic pressure generator 51, the grounding legs 4 are independently projected in accordance with the ups and downs of the seabed 6, and the shallow sea boring turret 1 is vertically and horizontally leveled. Stand upright. And
The anchor 22 is fixed to the seabed with the wire 23 loosened and the floater 2 appropriately separated (see FIG. 3D). After this state, the boring work can be started immediately. Further, when one grounding leg 4 sinks and the shallow water boring turret 1 is tilted during installation by installing in the mud layer area, the leg can be returned vertically by further projecting the leg.

As described above, the shallow water boring turret apparatus A of this embodiment can be carried to the site without using an expensive crane ship and can be easily installed vertically. It is safe and extremely easy to set up, as it does not require any on-site diving work or assembly. The grounding legs 4 at the four corners are all connected because the legs 11 are integrated by the horizontal tie members 14 and the like, and are excellent in stability and safety.
Underwater height of shallow water boring turret 1 is hydraulic winch 3
It can be easily adjusted by winding the wire 33 at 0, and it can be transported even in a very shallow place. Even if the seabed has undulations or slopes, it can be installed vertically simply by adjusting the amount of advance of each grounding leg 4 on the deck. Since it is the floor plate 40, it does not easily sink even if the installation location is in the mud layer area, and if it does, it will sink and the shallow water boring turret 1
Even if the vehicle tilts, it can be immediately corrected vertically by adjusting the grounding leg 4. After completion of the work, the hydraulic winch 30 can be used to immediately move the shallow water bowling turret to the next boring point, and in an emergency, it can be immediately lifted up and evacuated to the required place.

The embodiments of the present invention have been described above.
The specific configuration of the present invention is not limited to this embodiment, and any modifications such as design changes that do not depart from the gist of the invention are included in the present invention. For example, although the floater 2 is moored at the site in the embodiment, the floater 2 may be towed into the port without being limited to this.

The shape and arrangement of the connecting height adjusting means 3 are arbitrary, and the wire hanging method is also arbitrary.

The shape of the turret and the shape of the floater are also arbitrary.

[0029]

As described above, in the method of relocating a shallow water boring turret according to claim 1 of the present invention, the shallow water boring turret can be installed on the sea where it is required without using an expensive crane ship or the like. It can be installed easily and in a short time. By adjusting the mounting position of the buoyancy body, it can be towed even in an extremely shallow place, and can be easily re-lifted after work, so it can be easily relocated anywhere. Also, emergency evacuation can be performed in a short time. There is no need for diving work, and there are advantages such as safe and easy work. Further, the height of the buoyancy body connected to the side surface of the boring turret is adjusted by winding the wire suspended around the buoyancy body and the shives attached to the lower ends of the turrets with a hydraulic winch and unwinding it. The structure is simple and the operation is reliable.

Further, in the shallow water bowling turret apparatus according to the second aspect of the invention, the shallow water bowling turret can be easily installed in a short time on the sea without using an expensive crane ship or the like. By adjusting the lifting height of the shallow water bowling turret with a buoyant body, it can be towed and installed even on extremely shallow water. It can be easily moved anywhere in a short time at the time of relocation or emergency. No need for diving work, and the effects such as safe and easy work can be obtained. In addition, the height of the buoyancy body connected to the side surface of the boring turret is adjusted by winding the wire suspended around the buoyancy body and the shives attached to the lower ends of the turret legs with a hydraulic winch, and rewinding it. The structure is simple and the operation is reliable.

Further, in the shallow water bowling turret apparatus according to the third aspect, the shallow water bowling turret can be easily made vertical by adjusting the protrusion amount of the grounding leg even if the seabed has undulations or inclination. Moreover, the level can be set up horizontally. Even if the shallow water bowling turret is tilted during the work, it can be easily corrected.

[Brief description of drawings]

FIG. 1 is a front view showing a shallow water boring tower according to an embodiment of the present invention.

FIG. 2 is a front view showing a shallow water bowling turret.

[Fig. 3] How to install the shallow water boring turret device (a)
It is explanatory drawing shown in order of (b), (c), and (d).

[Explanation of symbols]

 A shallow water boring turret device 1 shallow water boring turret 2 floater (buoyant body) 3 connecting height adjusting means 4 grounding leg 5 expanding and contracting means 6 seabed 10 boring machine 11 legs 30 hydraulic winch (connecting height adjusting means) 31, 32 Sheave (connecting height adjusting means) 33 Wire (connecting height adjusting means) 50 Hydraulic cylinder (expanding and contracting means) 51 Hydraulic pressure generator (expanding and contracting means)

Claims (3)

(57) [Claims] 1. A buoyancy body is connected to an arbitrary height by adjusting a length of a wire connecting a lower part of a turret and a buoyancy body to a side surface of a boring turret for shallow water assembled on land, and the lower end of the boring turret is connected. After towing to the bowling position while floating from the sea bottom with a buoyant body, adjusting the height of the buoyant body and landing the lower end of the boring turret on the seabed allows the boring turret to be installed at a predetermined position. How to install a characteristic shallow water boring turret. 2. A shallow water bowling turret having a deck for mounting a boring machine; a buoyant body connected to an arbitrary height of a side surface of the boring turret to float the bowling turret above the seabed; and the buoyant body and the bowling turret. A shallow water boring turret device, comprising: means for winding a wire that is wound between sheaves attached to the lower part of a leg, and adjusting the connection height of a buoyant body consisting of a hydraulic winch to the boring turret. 3. The shallow water bowling turret apparatus according to claim 2, wherein the bowling turret has grounding legs at four corners which project at arbitrary heights by means of a telescopic means.