JPH026112Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a pile grasping device for an offshore work platform.

In order to construct a sea berth, which will serve as a distribution base for storing and managing LPG, petroleum, and chemicals, as well as receiving and receiving operations, piles will be driven into the seabed to serve as the foundation.

For this pile driving work, a pile grasping device installed on an offshore workbench is used, and driving of piles such as steel pipe piles, rock excavation, etc. are performed using this pile grasping device.

When driving a pile using the pile grasping device of such an offshore workbench, the pile grasping device is designed to be able to move horizontally with respect to the offshore workbench (immovable member) in order to change the driving position of the pile. However, in order to make the driving position of the pile more accurate, horizontal movement of the pile grasping device alone is insufficient.

In the present invention, the angle of the pile grasping device can be adjusted so that the pile can be driven into a more accurate position.

In addition to straight piles, slanted piles and piles made by intersecting two piles are driven.

The present invention improves work efficiency by making it possible to easily and quickly remove the pile grasping device from the pile, especially after driving a pile set in which two piles intersect. It was designed to be measured.

Therefore, the pile grasping device for an offshore workbench according to the present invention has a pair of rails laid on the offshore workbench with a predetermined distance apart, and a shoe that is placed on each rail at a distance and moves along the rails. , a pair of movable girders spanned between rails, one end of which is pivoted to a shoe disposed on one rail, and the other end pivoted to a shoe disposed on the other rail through an elongated hole, A pair of distribution girders separated and connected by a connecting member, spanned between the movable girders and removably connected to the movable girder, and separably connected in the middle, and attached to the distribution girder or the connecting member. It consists of a pad, an adjuster roller, and a cylinder provided between each rail and each movable girder to clamp the rail and move the movable girder along the rail or rotate the movable girder about one end thereof.

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

In Figures 1 and 2, 1A and 1B are a pair of rails laid at a predetermined distance apart from each other on the offshore work platform, and 2A, 2B and 2C and 2D are a pair of rails placed at a distance apart on the rails 1A and 1B. The rails 1A and 1B are engaged with each other in a mating manner, for example. 3A and 3B are movable girders spanned between rail 1A and rail 1B.
The rail B side end of is rotatably fixed to the shoes 2C and 2D by a shaft 4, and the movable girder 3A,
An elongated hole 5 extending in the axial direction of the girders 3A and 3B is formed at the end of the rail 1A side of the girder 3B.
A shaft 6 is engaged with and fixed to the shoes 2A and 2B. 7A, 7B are a pair of distributed girders provided at a predetermined interval, 8A, 8B are distributed girders 7A,
It is a connecting member that connects 7B, and distributed girders 7A, 7
Each end 7A-1, 7A-2 and 7B-1 of B,
7B-2 is removably connected to the movable girders 3A and 3B by bolts, and intermediate portions 7A-3 and 7B-3 of the distribution girders 7A and 7B are separably connected by flanges to each other by bolts. 9 is the distribution digit 7A, 7
B or a wooden pad attached to the connecting members 8A, 8B and guiding the steel pipe piles K-1, K-2, 10
are distributed girders 7A, 7B or connecting members 8A, 8B
This is an adjuster roller attached to the steel pipe piles K-1 and K-2 to adjust the angle of the steel pipe piles K-1 and K-2.As these wooden pads 9 and adjuster rollers 10, conventionally known ones can be used. 11A to 11D are cylinders provided between each rail 1A, 1B and each shoe 2A to 2D;
and 11B, the cylinders 11C and 11D alternately clamp the rails 1A and 1B and extend and contract alternately to move the movable beams 3A, 3B and thus the pile grasping device in a so-called inchworm manner. Also cylinder 11
A or 11B is clamped to one rail 1A and the cylinder is extended to move the girder 3.
It is also possible to rotate A and 3B at pivot points 4 and 4 with respect to shoes 2C and 2D.

FIG. 2 is a side view taken along the line X-X in FIG. It shows.

When in use, the cylinders 11A to 11D are alternately clamped to the rails 1A and 1B and expanded and contracted to horizontally move the movable girders 3A and 3B in an inchworm-like manner to a predetermined position, and then move the pile grasping device horizontally to a predetermined position.
1. As shown in Figure 2, cross the piles K-2 and erect them using a crane (not shown). Guide the piles K-1 and K-2 with wooden pads 9 and install them on the pile drive tower (not shown). The piles are driven with a pile driver, but in order to drive the piles into a predetermined and accurate position, the cylinder 11C on one rail 1B side,
Clamp rail 1B with 11D and show 2C,
2D is fixed, and one of the cylinders 11A and 11B on the other rail 1A side, for example, the cylinder 11B, clamps the rail 1B, and the cylinder 11B is extended, so that the rail 1B is centered around the pivot points 4, 4 on the rail 1B side. Rotate the movable girders 3A and 3B. At this time, the ends of the movable girders 3A, 3B on the rail 1A side are fixed to the shoes 2A, 2B by the elongated holes 5, 5 and the shafts 6, 6, so that the rotation of the movable girders 3A, 3B is not hindered. In the figure, the movable girders 3A and 3B are inclined by 5 degrees with respect to the horizontal line. Once the position of the pile grasping device is decided, use a crane (not shown) to remove the pile K.
-1 and K-2 are erected, and a set of piles is driven in using a pile driver installed in a pile driving tower (not shown).

When the pile pile driving is finished, the pile grasping device is moved to the rails 1A and 1 using the cylinders 11A to 11D.
It is moved to a predetermined position along B, but at that time, the distribution girder 7 for piles K-1 and K-2 is moved.
To remove A and 7B, remove each end 7 of the distribution girders 7A and 7B.
Remove the bolts connecting A-1, 7A-2 and 7B-1, 7B-2 to the movable girders 3A, 3B,
Also, middle 7A-3, 7B-3 of distribution girders 7A, 7B
Remove the bolts connecting the distribution girders 7A, 7
This is done by withdrawing B. Then, the pile caps are cut and the piles are tied together.

As explained above, according to the present invention, the angle of the pile grasping device can be adjusted, so the pile can be driven into a predetermined and accurate position, and once the pile is driven, the pile grasping device can be removed from the pile easily and quickly, so the work of driving the pile pile can be carried out efficiently.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a plan view of a pile grasping device for an offshore work platform in which the present invention is implemented, and FIG. 2 is a side view taken along the line X--X in FIG. 1. 1A, 1B...Rail, 2A or 2D...Show, 3A, 3B...Moving girder, 4...Axle, 5...
Long hole, 6...shaft, 7A, 7B...distributed girder, 7A-
1 to 7A-3, 7B-1 to 7B-3...
Bolt fastening points, 8A, 8B...Connecting member, 9...
...Pad, 10...Adjustment roller, 11A or 11D...Cylinder.

Claims (1)

[Scope of utility model registration request] A pair of rails are laid on the offshore workbench with a predetermined spacing between them, a shoe is placed on each rail with a spacing between them and moves along the rails, and one end spanned between the rails is placed on one rail. A pair of movable girders whose other end is pivoted to a shoe disposed on the other rail through an elongated hole, and a pair of movable girders which are connected by a connecting member with a predetermined distance between them. a pair of distribution girders that are spanned and removably connected to the movable girder and separably connected in the middle; pads and adjuster rollers that are attached to the distribution girder or the connecting member;
A marine work platform comprising each rail and a cylinder provided between each movable girder for clamping the rail, moving the movable girder along the rail, and rotating the movable girder around one end thereof. Pile grasping device.