JP3141093B2 - Floating workbench - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to sea berth construction,
The present invention relates to a floating workbench used for pile driving, boring, submersion, and other operations on the water surface in civil engineering works such as burial tunnel construction and seabed excavation.

[0002]

2. Description of the Related Art A floating work table provided with legs (legs) which can be raised and lowered on a main body is towed to a destination for construction by a tug boat, the leg is lowered to the bottom of the water and fixed, and the main body is placed on the water. From the air to the air, and work in this state.The main body has a structure that can support various loads generated during civil engineering work, and a structure that has buoyancy to become a floating body when moving on water There is a need to.

[0003] Conventionally, the main body of a floating workbench having a structure satisfying such conditions has a tightly closed structure similar to, for example, a barge and has a strong structure.

[0004]

A structure similar to a barge increases the manufacturing cost, and requires a base having a vast water area for mooring the storage and other operations after construction. Since transportation to the site is carried out only by water, the running cost is high, and furthermore, it is difficult to use it in inland lakes and rivers.

[0005] In this regard, a box shape (for example, about 5.5 m in length, about 2.5 m in width, and about height in about 5.5 m) is made of a frame material and a plate.
1.3 m), the hollow interior is divided into watertight compartments, and each chamber is a ballast tank (Unifloat). By transporting and assembling at the site, land transportation is possible. In this case, since the connecting means is, for example, a pin joint at the upper part and a hook joint at the lower part, the strength of the connecting part becomes a problem.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned disadvantages of the prior art, and to disassemble the members constituting the main body to enable land transportation, to be easily assembled on site, and to be reliable in terms of strength. In providing a platform.

[0007]

According to the present invention, in order to achieve the above object, in a floating workbench provided with a leg which can be raised and lowered on a main body, a plurality of partition plates are interposed between opposing vertical thin plates. On the outside of one side of the elongated plate, a male cone is attached at a location corresponding to the partition plate, and a female cone is attached on the outside of the other side to constitute a frame material, a plurality of the frame materials are arranged in parallel, a male cone and a female cone are attached. The binding material is pierced into the frame material so as to be attached to the partition plate, and a plurality of frame materials are combined to form a frame at the site by joining the frame materials, and the buoyancy material is filled in the space partitioned by the partition plate, The main point is to attach a plate to the entire surface of the framework to form the main body, to use a PC steel bar as the binding material for joining a plurality of frame materials, and to use foam synthetic resin as the buoyancy material. A.

According to the first aspect of the present invention, by disassembling the plurality of frame members and the buoyancy member, land transportation becomes possible. At the site, the frame members are assembled to form a framework, and the inside of the frame member is formed. The main body can be easily formed simply by filling the buoyancy material. In this case, the frame material has a plurality of partition plates interposed between the opposed vertical elongated plates, and the male cone and the female cone are attached to the outside of the vertical elongated plate.Assembling the framework, penetrate the male cone and the female cone A PC steel rod serving as a binding material may be penetrated through the frame material so as to be attached to the partition plate, and a plurality of frame materials may be joined, thereby improving workability.

According to the second aspect of the present invention, in addition to the above-mentioned operation, since the assembling of the frame can be performed by binding a plurality of frame members with PC steel rods, the work on site is easy.

According to the third aspect of the present invention, the buoyancy material is made of a foamed synthetic resin, so that it can be easily processed and cut in accordance with the shape of the void formed in the framework. Suitable for.

[0011]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a perspective view of a main body part which is a main part of the floating work table of the present invention. The floating work table of the present invention has a basic structure in which a leg 2 which can be moved up and down is provided on a main body 1. In the figure, reference numeral 3 denotes a lifting device for the leg 2 made of steel pipe or the like. Although not shown, the leg 2 includes a chuck device for the leg 2 and a lifting cylinder for vertically moving the chuck device. Become.

In such a floating workbench, a frame composed of a plurality of frame members 4 and a buoyant member 5 composed of polystyrene or the like are used as basic components, and a bottom plate 6, a side wall plate 7, and an upper plate 8 are combined with each other to form the main body 1 Was configured.

As shown in FIG. 2, the frame member 4 has a plurality of partition plates 4b interposed at appropriate intervals between opposed vertical elongated plates 4a, and is provided outside one side of the vertical elongated plate 4a. Then, a plurality of male cones 9 are mounted vertically above and below a location corresponding to the partition plate 4b, and a female cone 10 is mounted outside the other side. In addition, a female cone 10 is attached to the outer vertical thin plate 4a for the one positioned at the end of the frame members 4 arranged in parallel.

Next, a method of assembling the main body 1 will be described with reference to FIGS. 2 to 4. The frame member 4, the buoyant member 5, the bottom plate 6, the side wall plate 7, the upper plate 8 and the like are transported to the site. In this case, since each member is in a disassembled state, land transportation is also possible.

At the site, as shown in FIG. 2, a plurality of frame members 4 are arranged in parallel, a male cone 9 and a female cone 10 are penetrated and attached to the partition plate 4b. 4 and the PC steel rod 11
Is tensioned by a hydraulic jack (not shown), the male cone 9 and the female cone 10 are connected, and the frame material 4 arranged in parallel is connected via the male cone 9 and the female cone 10 to P.
The steel bars 11 are tied together. The end of the PC steel rod 11 is locked by connecting a nut 13 to the female cone 10.

As described above, the plurality of frame members 4 are combined to form a frame, and the space 12 divided by the partition plate 4b is formed.
The inside is filled with a foam synthetic resin as a buoyant material 5, for example, a so-called styrene foam such as polystyrene. In this case, since the leg 2 is penetrated and attached to the corner portion of the framework, a hole 5a for penetrating the buoyant material 5 is formed. By doing so, it is easy to perform, and buoyancy can be ensured even if any part is lost.

Finally, the bottom plate 6, the side wall plate 7, and the upper plate 8 are attached, and necessary equipment such as the elevating device 4 is installed. Main body 1 completed in this way
Since the frame member 4 is tensioned through the PC steel rod 11, the frame material 4 can cope with the stress in the tensioning direction and is reliable in terms of strength.

[0018]

As described above, the floating workbench of the present invention can be disassembled and assembled on site, and can be transported on land because the components can be simplified and reduced in weight. It can also be used in lakes and marshes, and can be easily assembled on site by simply tensioning a PC steel rod, and the strength is reliable due to the tension of the PC steel rod.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a main body, which is a main part of a floating workbench of the present invention.

FIG. 2 is a perspective view of a framework of a main body, which is a main part of the floating workbench of the present invention.

FIG. 3 is a vertical sectional front view of a framework of a main body, which is a main part of the floating workbench of the present invention.

FIG. 4 is a longitudinal sectional front view of a connecting portion of a framework of a main body, which is a main part of the floating workbench of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Main body part 2 ... Leg 3 ... Elevating device 4 ... Frame material 4a ... Vertical elongated plate 4b ... Partition plate 5 ... Buoyant material 5a ... Hole 6 ... Bottom plate 7 ... Side wall plate 8 ... Top plate 9 ... Male cone 10 ... Female cone 11 ... PC steel bars 12 ... Vacancies 13 ... Nuts

Continuation of the front page (56) References JP-A-54-160001 (JP, A) JP-A-61-229009 (JP, A) JP-A-60-32431 (JP, U) JP-A-1-107693 (JP) , U) (58) Fields investigated (Int. Cl. ⁷ , DB name) E02B 17/00

Claims (3)

(57) [Claims] 1. A floating workbench having a vertically movable leg provided on a main body thereof, wherein a plurality of partition plates are interposed between opposed vertical elongated plates, and a plurality of partition plates are provided on one side of the vertical elongated plates so as to correspond to the partition plates. Attach the male cone at the point where it will be attached, attach the female cone to the outside of the other side to form a frame material, arrange a plurality of the frame materials in parallel, penetrate the male cone and the female cone, and attach the binding material to the partition plate Forming a frame on site by connecting a plurality of frame materials by penetrating through the material, filling a buoyant material in the space partitioned by the partition plate, and attaching a plate to the entire surface of the frame to form a main body portion A floating workbench. 2. A binding material for connecting a plurality of frame members is P
The floating work bench according to claim 1, which is a C steel rod. 3. The floating table according to claim 1, wherein the buoyancy material is a foamed synthetic resin.