JP2022040604A - Pile-shaped structure carrying device and carrying and tentatively placing method - Google Patents

Abstract

To safely carry and tentatively place a pile-shaped structure like a mono-pile 1 using a multi-axial carrier 10.SOLUTION: A plurality of multi-axial carriers 10 each including a loading deck ascending/descending jack are arranged side by side and are coupled in the lateral direction, and a horizontal loading deck 12 is placed on the loading decks of those. Next, a mono-pile 1 is placed on the horizontal loading deck 12 in a laid-down manner. Subsequently, a pair of right and left stopper mechanisms 14 that prevents the mono-pile 1 from falling down is placed on the horizontal loading deck 12 across the placing site of the mono-pile 1. When the mono-pile is tentatively placed, the multi-axial carriers 10 are jacked down, so as to cause both ends of the mono-pile 1 protruding from the horizontal loading deck 12 to be caught by a pair of stone-crushing mounds for tentative placement.SELECTED DRAWING: Figure 5

Description

The present invention relates to a transportation device for a pile-shaped structure and a method for transporting / temporarily placing the pile-shaped structure.

As a transporting device for heavy objects, it is known to use a multi-axis bogie as shown in Patent Documents 1 to 3.
The multi-axle trolley is equipped with a jack for raising and lowering the loading platform (jacking up and jacking down).

Japanese Patent No. 4004423A Japanese Patent No. 6061191 Japanese Patent No. 6682332

By the way, when transporting a heavy object, it is common to transport the heavy object in a laid state (a state in which the center of gravity is lowered).

However, when the heavy object to be transported is a pile-shaped structure, it may fall if it is laid down, and it is required that the heavy object can be safely transported.
In some cases, it may be required to transport the product to a temporary storage site, unload it, and temporarily store it while it is laid down for a long period of time until construction.

In view of such an actual situation, the present invention provides a transport device for safely transporting a pile-shaped structure in a laid state (horizontal placement state) using a multi-axis carriage, and a method for transporting and temporarily placing the pile-shaped structure. That is the issue.

The transportation device for a pile-shaped structure according to the present invention is
Multiple multi-axle trolleys equipped with jacks for raising and lowering the loading platform, arranged in parallel and connected in the horizontal direction,
A horizontal pedestal that is fixed across the plurality of multi-axle bogies and can be placed with a pile-shaped structure laid on its upper surface with both ends protruding from it.
A pair of left and right stopper mechanisms are provided on the horizontal pedestal with the pile-shaped structure placed on the horizontal pedestal to prevent the pile-shaped structure from falling.
It is characterized in that it is composed including.

The method for transporting and temporarily placing the pile-shaped structure according to the present invention uses the above-mentioned transport device.
A mound construction process that builds a pair of mounds for placing both ends of the pile-shaped structure on the floor of the temporary storage site of the pile-shaped structure while the pile-shaped structure is laid down.
A pile-shaped structure mounting process in which a pile-shaped structure is mounted on a horizontal pedestal mounted on the multi-axis trolley with both ends protruding from the horizontal pedestal, and a pile-shaped structure mounting process.
By moving the multi-axle trolley to the temporary storage place, the pile-shaped structure is transported, the multi-axle trolley is made to enter between the pair of mounds in a jack-up state, and both ends of the pile-shaped structure are placed on the pair. The transportation / positioning process located above the mound,
A temporary placement step of jacking down the multi-axis trolley, depositing both ends of the pile-shaped structure on the pair of mounds and temporarily placing them, and leaving the multi-axis trolley out.
It is characterized by including.

According to the present invention, the pile-shaped structure can be safely transported in a state of being laid down (horizontally placed state) by using a multi-axis bogie, and can be safely temporarily placed.

Schematic diagram of offshore wind power generation equipment Overall view of the monopile conveyor shown as one embodiment of the present invention. Top view of FIG. Side view of the jack-up state and the down state corresponding to the arrow of AA in FIG. Side view corresponding to BB arrow view in FIG. Enlarged view of the stopper mechanism Process diagram at the time of delivery to the temporary storage site Process diagram when carrying out from the temporary storage area Explanatory drawing of transportation and temporary storage

Hereinafter, embodiments of the present invention will be described in detail.
In the present embodiment, a monopile for an offshore wind power generation facility is transported and temporarily placed as a pile-shaped structure.

Therefore, first, a representative example of the offshore wind power generation facility will be described with reference to the schematic diagram of FIG.

The offshore wind power generation facility 100 includes a monopile 1, a transition piece 2, a tower 3, a nacelle (power generation unit) 4, and a plurality of blades 5.

The monopile 1 is driven into the ground deeper than the bottom BW (underwater ground) to form a pile foundation (pile-shaped structure). The upper end of the monopile 1 is positioned above the water surface DL.

The transition piece 2 is a tower-shaped structure for adjusting the verticality connected to the upper end portion of the monopile 1, and is connected and fixed in a state where the inner circumference of the lower end portion of the transition piece 2 is fitted to the outer periphery of the upper end portion of the monopile 1.

The tower 3 is erected at the upper end of the transition piece 2. At the upper end of the transition piece 2, a deck (scaffolding facility) 2d for installing the tower 3 and maintaining and managing the power generation facility is provided.

The nacelle 4 is a power generation unit installed at the top of the tower 3.
A plurality of blades 5 are attached to the front end of the horizontal axis (rotor axis) of the nacelle 4, are arranged radially, and are rotated by wind power to generate electricity in the nacelle 4.

When a large number of offshore wind power generation facilities 100 as described above are installed offshore near the port, the components (monopile 1, transition piece 2, tower 3, nacelle 4 and blade 5) of the offshore wind power generation facility 100 are shipped from overseas. In many cases, all the units are carried in and installed (placement of monopile 1, transition piece 2, tower 3, nacelle 4 and blade 5).

In addition, when the foundation work (placement of monopile 1 and installation of transition piece 2) and upper work (installation of tower 3, nacelle 4 and blade 5 which are wind turbine members) are divided, the foundation work is monopile for all units. It will be done after the 1 and the transition piece 2 are brought in.

However, since all the constituent members of the offshore wind power generation facility are heavy objects, for example, in the case of a monopile, the limit is that about three can be carried in by one ship.
Therefore, it may take one to several years to carry in the components (monopile 1 and transition piece 2) for foundation construction for all the units.

Therefore, if construction is to be carried out after all the components for foundation construction have been prepared, the components will be unloaded, transported to the temporary storage site, and temporarily placed each time the ship arrives. Can last for several years.

In addition, at the time of construction several years later, it will be transported from the temporary storage site to the pier and loaded directly on the offshore wind power equipment installation ship, or loaded on the carrier ship and supplied to the offshore wind power equipment installation ship.

In the present embodiment, in the above case, a transport device for transporting the monopile 1 which is a pile-shaped structure from the dock to the temporary storage site (or from the temporary storage site to the temporary storage site) by a multi-axis bogie and temporarily placing the pile 1. It is an embodiment about a transportation / temporary storage method.
The monopile 1 is required to be transported in a laid state (horizontal placement state) and temporarily placed in the same laying state.

FIG. 2 is an overall view of the monopile conveyor shown as an embodiment of the present invention (front view seen from the side of the trolley), and FIG. 3 is a plan view of FIG. 2. Further, FIG. 4 is a side view corresponding to the arrow AA of FIG. 2, FIG. 4A is a jack-up state, and FIG. 4B is a jack-down state. Further, FIG. 5 is a side view corresponding to the arrow BB of FIG. 2.

In this embodiment, as can be seen from FIG. 4 (and FIG. 5), three multi-axis bogies 10 are used, and these are arranged in parallel and connected laterally by a connecting material (H-shaped steel) 11. It is integrated. Each multi-axis bogie 10 has two sets of coaxial wheels 10a and 10a in the lateral direction (see FIG. 4) and 16 sets in the front-rear direction (see FIG. 2), and has a 32-axis configuration. Each pair of wheels 10a and 10a can turn around their respective vertical axes.

The loading platform 10b of the multi-axis carriage 10 can be raised / lowered (jacked up and jacked down) by the loading platform raising / lowering jack 10c.
Note that FIG. 4A shows a jack-up state in which the loading platform 10b is raised, and FIG. 4B shows a jack-down state in which the loading platform 10b is lowered.

In order to carry the monopile 1 in a laid-down state (horizontally placed state) by three parallel multi-axle bogies 10, a horizontal mount 12 is constructed on the loading platform 10b of the three multi-axle bogies 10.
The horizontal pedestal 12 is fixed so as to straddle the three multi-axis bogies 10, and the monopile 1 can be laid on the upper surface of the three multi-axis bogies 10 and placed in a state where both ends thereof protrude.

In the present embodiment, the horizontal pedestal 12 is composed of a plurality of (five in this example) steel materials (H-shaped steel) 13. Each of these steel materials 13 is arranged in a direction crossing the three multi-axis bogies 10, and is arranged in parallel with each other at a predetermined distance in the front-rear direction of the multi-axis bogie 10. Then, these steel materials 13 are fixed on the loading platform 10b of the multi-axis bogie 10.

Further, in order to prevent the monopile 1 mounted on the horizontal mount 12 of the multi-axis bogie 10 from falling, a pair of left and right stopper mechanisms 14 are provided on the horizontal mount 12 so as to sandwich the mounting place of the monopile 1. Be done.

In the present embodiment, the stopper mechanism 14 is provided in pairs on two steel materials 13 out of the five steel materials 13 constituting the horizontal mount 12. Therefore, two pairs of left and right stopper mechanisms 14 are provided in the front-rear direction.

The stopper mechanism 14 will be described in more detail with reference to the enlarged view of FIG.
The stopper mechanism 14 includes a stopper member (stopper plate) 15 facing the peripheral surface of the monopile 1 and a hydraulic cylinder 16 as a drive device capable of causing the stopper member 15 to lie down and stand upright.

The stopper member 15 can rotate around the rotation shaft 15a on the lower end side, and the hydraulic cylinder 16 can rotate around the rotation shaft 16a on the base end side. The free end side of the stopper member 15 and the tip of the output rod of the hydraulic cylinder 16 are connected by a connecting pin 17.

Here, the stopper members 15 and 15 of the pair of left and right stopper mechanisms 14 and 14 form an inverted C shape when viewed in the axial direction of the monopile 1 in an upright state, as shown in FIG. In this state, the monopile 1 can be held and fall can be prevented.

A square lumber (wood) 18 or the like may be appropriately interposed between the monopile 1 and the stopper member 15 for cushioning or gap adjustment (see FIG. 6).

Next, the configuration of the temporary storage place of the monopile 1 will be described with reference to FIGS. 7 and 8.
FIG. 7 is a process diagram at the time of carrying in to the temporary storage site, and FIG. 8 is a process diagram at the time of carrying out from the temporary storage site.

A pair of mounds (crushed stone mounds) 20, 20 by stacking crushed stones on the floor (including the ground) to support both ends of the monopile 1 in the temporary storage area with the monopile 1 laid down. Is provided.

In the present embodiment, the pair of mounds 20 and 20 have a size that allows four monopile 1s to be supported side by side. Therefore, when temporarily placing 32 monopile, 8 pairs of mounds are required.

The distance between the pair of mounds 20 and 20 is such that the multi-axis bogie 10 can enter between the pair of mounds 20 and 20.

The height of the mound 20 is lower than the height of the upper surface of the horizontal mount 12 when the multi-axis bogie 10 is jacked up (see FIG. 7A), and the height of the upper surface of the horizontal mount 12 when the multi-axis bogie 10 is jacked down. It is set to be higher than that (see FIG. 7 (b)).

Therefore, when the multi-axis bogie 10 is equipped with the monopile 1 in a jack-up state and enters between the pair of mounds 20 and 20, the mound 20 becomes lower than the monopile 1 and the monopile 1 is above the mounds 20 and 20. Both ends are located (see FIG. 7A).

Further, when the multi-axle bogie 10 that has entered between the pair of mounds 20 and 20 is jacked down, the monopile 1 can be deposited in the pair of mounds 20 and 20, and the multi-axle bogie 10 is in an empty state and the pair of mounds 20. It is possible to leave from 20 minutes (see FIG. 7 (b)).

Next, the actual transportation and temporary placement of the monopile 1 will be described with reference to FIG.
FIG. 9 is an explanatory diagram of transportation and temporary storage.

In the temporary storage place of the monopile 1, a pair of mounds (crushed stone mounds) 20 and 20 for placing both ends of the monopile 1 in a laid state are constructed in advance on the floor surface. This process corresponds to the mound construction process.

The carrier 200 of the monopile 1 is carried in with about three monopile 1s laid down (horizontally placed).

When the carrier 200 berths at the port, the monopile 1 is lifted by a crane and placed on the horizontal mount 12 of the multi-axis bogie 10 waiting at the dock. This step corresponds to a monopile mounting step in which the monopile 1 is mounted on the horizontal mount 12 of the multi-axis bogie 10 with both ends protruding from the horizontal mount 12. As a result, the multi-axis bogie 10 can carry the monopile 1.

The multi-axle bogie 10 equipped with the monopile 1 travels from the dock and heads for the temporary storage place to carry the monopile 1. Then, when the multi-axle bogie 10 arrives at the temporary storage place, it enters between the pair of mounds 20 and 20 in a jack-up state as shown in FIG. 7A. In this process, the monopile 1 is transported by moving the multi-axis trolley 10 to a temporary storage place, the multi-axis trolley 10 is made to enter between the pair of mounds 20 and 20 in a jacked-up state, and both ends of the monopile 1 are paired. Corresponds to the transportation / positioning process of positioning above the mounds 20 and 20 of the above.

Then, after entering, as shown in FIG. 7 (b), jack down, whereby both ends of the monopile 1 can be deposited in a pair of mounds 20 and 20 and temporarily placed. After this, the multi-axle bogie 10 becomes empty and can exit from between the pair of mounds 20 and 20 and return to the dock for the next transportation of the monopile 1. This process corresponds to a temporary placement process in which the multi-axis bogie 10 is jacked down, both ends of the monopile 1 are deposited on a pair of mounds 20 and 20 and temporarily placed, and the multi-axis bogie 10 is ejected.

In addition, in the above, the case of transporting from the pier to the temporary storage site and temporarily storing it has been described, but after the temporary storage period has elapsed, prior to the construction, the case of transporting from the temporary storage site to the temporary storage site is also temporarily placed. Therefore, it can be applied in the same way.

FIG. 8 is a process diagram at the time of carrying out from the temporary storage place.
In the process of FIG. 8A, the multi-axis bogie 10 enters the lower side of the monopile 1 supported by the pair of mounds 20 and 20 in a jack-down state.

In the process of FIG. 8B, the multi-axis bogie 10 is jacked up, the monopile 1 is lifted by the horizontal mount 12, and both ends of the monopile 1 are lifted from the pair of mounds 20 and 20. As a result, the monopile 1 can be carried out. Therefore, the multi-axle bogie 10 exits from the pair of mounds 20 and 20 with the monopile 1 mounted, and heads for the dock.

Further, FIG. 9 also shows a state in which the transition piece 2 carried in while being upright by the carrier 200 is carried by another multi-axis bogie 50 and temporarily placed in the transition piece temporary storage place. ..

In the above description, the pile-shaped structure to be transported / temporarily placed is a monopile of an offshore wind power generation facility, but the present invention is not limited to this and is generally applicable to the pile-shaped structure.

Further, the illustrated embodiment is merely a schematic example of the present invention, and the present invention is made by a person skilled in the art within the scope of claims in addition to the one directly shown by the described embodiment. Needless to say, it includes improvements and changes in.

100 Offshore wind power generation equipment 1 Monopile 2 Transition piece 2d deck (scaffolding equipment)
3 Tower 4 Nacelle (Power Generation Department)
5 Blade 10 Multi-axis bogie 10a Wheels 10b Loading platform 10c Loading platform lifting jack 11 Connecting material 12 Horizontal platform 13 Steel material constituting the horizontal platform 14 Stopper mechanism 15 Stopper member 15a Rotating shaft 16 Hydraulic cylinder (drive device)
16a Rotating shaft 17 Connecting pin 18 Square lumber 20 Mound for temporary placement

Claims (3)

A device that transports pile-shaped structures in a laid-down state.
Multiple multi-axle trolleys equipped with jacks for raising and lowering the loading platform, arranged in parallel and connected in the horizontal direction,
A horizontal pedestal that is fixed across the plurality of multi-axle bogies and can be placed on the upper surface of the pile-shaped structure with both ends protruding from the pile-shaped structure.
A pair of left and right stopper mechanisms are provided on the horizontal pedestal with the pile-shaped structure placed on the horizontal pedestal to prevent the pile-shaped structure from falling.
A conveyor for pile-shaped structures, characterized in that it is configured to include. The stopper mechanism is configured to include a stopper member facing the pile-shaped structure and a drive device capable of causing the stopper member to lie down and stand upright.
The transportation of the pile-shaped structure according to claim 1, wherein the stopper members of the pair of left and right stopper mechanisms form an inverted C shape when viewed in the axial direction of the pile-shaped structure in an upright state. Device. A method of transporting a pile-shaped structure using the transport device according to claim 1 or 2, and temporarily placing the pile-shaped structure in a temporary storage place.
A mound construction process that builds a pair of mounds for placing both ends of the pile-shaped structure on the floor of the temporary storage site of the pile-shaped structure while the pile-shaped structure is laid down.
The pile-shaped structure mounting process in which the pile-shaped structure is placed on the horizontal pedestal of the multi-axis trolley with both ends protruding from the horizontal pedestal.
By moving the multi-axle trolley to the temporary storage place, the pile-shaped structure is transported, the multi-axle trolley is made to enter between the pair of mounds in a jack-up state, and both ends of the pile-shaped structure are placed on the pair. The transportation / positioning process located above the mound,
A temporary placement step of jacking down the multi-axis trolley, depositing both ends of the pile-shaped structure on the pair of mounds and temporarily placing them, and leaving the multi-axis trolley out.
A method for transporting and temporarily placing pile-shaped structures, which comprises.

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