JP2022122374A - Transfer method of cylindrical structure - Google Patents

Abstract

To provide a cylindrical structure which prevents an excessive load from being applied to a transport vehicle when transferring a cylindrical structure from a transport ship to the transport vehicle, and which can be accurately placed on the transport vehicle.SOLUTION: A transfer method of a cylindrical structure (for example, a monopile 1) is a method of transferring the cylindrical structure that has been transported by a transport ship 80 from the transport ship 80 to a transport vehicle 9 on land. This method includes: a temporary receiving rack installation step of installing a pair of temporary receiving racks 50, 50 on land; a cylindrical structure temporary receiving step of unloading the cylindrical structure from the transport ship 80 and placing both ends of the cylindrical structure in a laid state on the pair of temporary receiving racks 50, 50; and a transfer step of transferring the cylindrical structure placed on the pair of temporary receiving racks 50, 50 to the transport vehicle 9.SELECTED DRAWING: Figure 10

Description

TECHNICAL FIELD The present invention relates to a method of transferring a tubular structure transported by a transport ship from the transport ship to a transport vehicle on land.

It is known to use a multi-axle truck as a vehicle for transporting heavy objects, as disclosed in Patent Documents 1 to 3 and the like. The multi-axle trolley is equipped with a jack for raising and lowering the bed that can raise and lower the bed (jack up and jack down).

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

By the way, when a heavy cylindrical structure that has been transported by a carrier ship is transferred from a carrier ship on the water to a carrier vehicle on land, the tubular structure is lifted from the carrier boat by a crane or the like and placed directly on the carrier vehicle. When unloading, there is a risk that the cylindrical structure of the suspended load will be lowered onto the transport vehicle while it is rocking due to the rocking of the transport ship. It can only work. In addition, when the tubular structure is laid on the transport vehicle, there is a demand for the center of gravity of the tubular structure to be as close as possible to the center of gravity of the transport vehicle from the viewpoint of weight balance.

In view of such circumstances, the present invention aims to prevent an excessive load from being applied to the transport vehicle when transferring the tubular structure from the transport ship to the transport vehicle, and to transfer the tubular structure onto the transport vehicle. The purpose is to accurately place the

Therefore, a method for transferring a cylindrical structure according to the present invention is a method for transferring a cylindrical structure that has been transported by a carrier from a carrier to a carrier vehicle on land. A method for transferring a cylindrical structure according to the present invention includes a step of installing a pair of temporary receiving frames on land, and carrying out the cylindrical structure from a carrier ship and laying the cylindrical structure on the ground. A cylindrical structure temporary receiving step of placing both ends thereof on a pair of temporary receiving stands, and a transfer step of transferring the cylindrical structure placed on the pair of temporary receiving stands to a transport vehicle. .

According to the present invention, a cylindrical structure transported from a carrier is temporarily received by a pair of temporary receiving racks, and then transferred from the temporary receiving racks to a carrier vehicle. Therefore, compared to the case where the tubular structure is directly unloaded from the carrier onto the carrier vehicle, it is possible to suppress the application of an excessive load to the carrier vehicle and to accurately place the tubular structure on the carrier vehicle.

1 is a schematic diagram of an offshore wind power generation facility; FIG. 1 is an overall view of a transport vehicle according to a first embodiment of the present invention; FIG. FIG. 3 is a plan view of FIG. 2; FIG. 3 is a diagram showing a jack-up state and a jack-down state corresponding to the AA arrow view of FIG. 2; FIG. 3 is a view showing an upright state of the stopper mechanism corresponding to the BB arrow view of FIG. 2; It is an enlarged view of a stopper mechanism. It is process drawing at the time of carrying in to a temporary storage place. It is process drawing at the time of carrying out from a temporary storage place. It is explanatory drawing of transportation and temporary placement. It is a figure which shows the transfer method of a monopile. It is a figure which shows the transfer method of a monopile. It is an overall view of a transport vehicle in a second embodiment of the present invention. 13 is an enlarged view of the transport vehicle shown in FIG. 12; FIG. FIG. 14 is a view showing the stopper mechanism corresponding to the CC arrow view of FIG. 13; It is a figure which shows the method of transferring a monopile from a temporary receiving frame to a transportation vehicle. It is a figure which shows an example of a temporary receiving stand. FIG. 17 is a partial enlarged view of portion D of FIG. 16; FIG. 17 is a view showing the temporary support stand corresponding to the EE arrow view of FIG. 16; FIG. 17 is a partially enlarged view of portion F of FIG. 16;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail.
In the following, as an example of the "tubular structure" of the present invention, a monopile that can constitute a pile foundation for offshore wind power generation facilities will be described. Not exclusively.

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

The offshore wind power generation facility 70 has a monopile 1 , a transition piece 2 , a tower 3 , a nacelle (power generation section) 4 and a plurality of blades 5 .

The monopile 1 is a cylindrical structure having a circular cross section, and is also a pile-like structure, which is driven into the ground (underwater ground) deeper than the water bottom BW to form a pile foundation for the offshore wind power generation facility 70. The upper end of the monopile 1 is positioned above the water surface DL. Incidentally, the monopile 1 has a straight portion 7 extending linearly and a conical portion 8 continuously formed on one end side of the straight portion 7, as shown in FIG. 2 which will be described later. The conical portion 8 has a tapered shape whose diameter decreases with increasing distance from the straight portion 7 .

The transition piece 2 is a tower-shaped structure for verticality adjustment connected to the upper end of the monopile 1 (for example, the conical portion 8), and the inner periphery of the lower end of the transition piece 2 is fitted to the outer periphery of the upper end of the monopile 1. , the connection is fixed.

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

The nacelle 4 is a power generation section 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 and arranged radially.

When a large number of offshore wind power generation facilities 70 as described above are installed on the sea near a port, the components of the offshore wind power generation facilities 70 (monopile 1, transition piece 2, tower 3, nacelle 4 and blades 5) are transported from overseas by a carrier ship. In many cases, the entire base is brought in and construction (placing of the monopile 1, installation of the transition piece 2, tower 3, nacelle 4 and blades 5) is performed.

In addition, when dividing the foundation construction (casting the monopile 1 and installing the transition piece 2) and the upper construction (installing the tower 3, the nacelle 4 and the blades 5, which are wind turbine members), the foundation construction is the monopile for the entire base. 1 and the transition piece 2 are carried in.

However, since the structural members (monopile 1 and transition piece 2) for foundation construction for all bases are transported from overseas in multiple batches by transport ship, this transport may take one to several years.

Therefore, if construction is to be performed after all the structural members for foundation construction have been prepared, each time a transport ship arrives, the structural members will be unloaded, transported to a temporary storage site, and temporarily stored. It may take several years.

In addition, during construction several years later, it will be transported from the temporary storage site to the wharf and directly loaded onto the offshore wind power facility installation ship, or loaded onto a carrier ship and supplied to the offshore wind power facility installation ship.

This embodiment is an embodiment for transporting and temporarily storing the monopile 1 from the dock to the temporary storage site (or from the temporary storage site to the dock) by a transport vehicle in the above case.
The monopile 1 is required to be transported in a laid state (a state in which the center of gravity is lowered, in a horizontal state), and to be temporarily placed in the laid state as well.

FIG. 2 is an overall view of the transport vehicle according to the first embodiment of the present invention, and FIG. 3 is a plan view of FIG. FIGS. 4A and 4B are diagrams showing a jack-up state and a jack-down state corresponding to the arrow AA in FIG. 2. FIG. FIG. 5 is a diagram showing the upright state of the stopper mechanism corresponding to the BB arrow view of FIG.

As can be seen from FIG. 4 (and FIG. 5), the transport vehicle 9 of the present embodiment uses three multi-axle trucks 10, which are arranged in parallel and laterally connected by connecting members (H-shaped steel) 11. It is connected and integrated in the direction. Each multi-axle truck 10 has a pair of coaxial wheels 10a, 10a in two sets in the lateral direction (see FIG. 4) and 16 sets in the longitudinal direction (see FIG. 2), and has 32 axles. Each pair of wheels 10a, 10a is pivotable about a respective vertical axis. Each multi-axle truck 10 may be configured by connecting a plurality of small multi-axle trucks in series in the front-rear direction.

The multi-axle truck 10 includes a loading platform 10b and a jack (loading platform lifting jack) 10c for raising and lowering the loading platform 10b. The loading platform 10b of the multi-axle truck 10 can be raised and lowered (jacked up and jacked down) by extending and retracting the jack 10c. FIG. 4(a) shows a jacked-up state in which the loading platform 10b is raised, and FIG. 4(b) shows a jacked-down state in which the loading platform 10b is lowered. Here, the state shown in FIG. 4A is the jack-up state of the multi-axle truck 10, in other words, the jack-up state of the transport vehicle 9. As shown in FIG. The state shown in FIG. 4(a) is the jack-down state of the multi-axle truck 10, in other words, the jack-down state of the transportation vehicle 9. FIG.

In order to transport the monopile 1 in a laid state (a state in which the center of gravity is lowered, a state in which the monopile is placed horizontally) by three parallel multi-axle carts 10, a horizontal platform 12 is constructed on the loading platform 10b of the three multi-axle carts 10. be. The horizontal platform 12 is fixed across the three multi-axle trucks 10, and the monopile 1 can be placed on the upper surface thereof with both ends protruding.

In this embodiment, the horizontal frame 12 is composed of a plurality of steel materials (H-shaped steel) 13 . These steel members 13 are arranged in a direction that traverses the three multi-axle trucks 10 , and are arranged parallel to each other with a predetermined interval in the longitudinal direction of the multi-axle truck 10 . These steel materials 13 are fixed on the loading platform 10b of the multi-axle truck 10. As shown in FIG. In this embodiment, an example in which the number of steel materials 13 constituting the horizontal frame 12 is five is illustrated, but the number of steel materials 13 constituting the horizontal frame 12 is not limited to five (for example, (see FIGS. 12 and 13).

In this embodiment, in order to prevent the monopile 1 placed on the horizontal platform 12 from falling, a pair of left and right stopper mechanisms 14, 14 are provided on the horizontal platform 12 so as to sandwich the place where the monopile 1 is placed. be done.

In this embodiment, a pair of stopper mechanisms 14 are provided for each of two steel members 13 among the plurality of steel members 13 forming the horizontal platform 12 . Therefore, two pairs of left and right stopper mechanisms 14, 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 driving device capable of laying down and raising the stopper member 15 .

The stopper member 15 is rotatable around a rotating shaft 15a on the lower end side, and the hydraulic cylinder 16 is rotatable around a rotating 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, 15 of the pair of left and right stopper mechanisms 14, 14 form an inverted V shape when viewed in the axial direction of the monopile 1, as shown in FIG. In this state, the monopile 1 can be held and prevented from falling. Incidentally, the stopper members 15, 15 of the pair of left and right stopper mechanisms 14, 14 can be substantially horizontal in the laid down state.

Between the monopile 1 and the stopper member 15, a rectangular timber (wooden) 18 or the like may be interposed for cushioning or gap adjustment (see FIG. 6). Also, between the stopper member 15 or the rectangular timber 18 and the monopile 1, for example, a plate-like cushioning material made of rubber may be interposed. Further, for example, a plate-like cushioning material made of rubber may be interposed between the upper surface of the horizontal mount 12 and the monopile 1 .

In this embodiment, as shown in FIGS. 2, 3, and 5, of the plurality of steel members 13 constituting the horizontal frame 12, two steel members 13 provided with stopper mechanisms 14 are provided at both end portions thereof. , to which a side bar 13a is attached. The side bar 13a is provided so as to straddle the end portion of the steel material 13 provided with the stopper mechanism 14 and the side edge portion of the loading platform 10b of the multi-axle carriage 10 in order to integrate them. The side bar 13 a can function as a reaction force absorber for receiving the horizontal force acting on the stopper mechanism 14 from the monopile 1 placed on the horizontal frame 12 of the transport vehicle 9 .

Therefore, in this embodiment, the transport vehicle 9 transports the monopile 1 in a lying state, and has a multi-axle carriage 10, a horizontal platform 12, a stopper mechanism 14, and a side bar 13a.

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

In the temporary storage place for the monopile 1, a pair of mounds (crushed stone mounds) 20, 20 are provided by piling up crushed stones on the floor surface (including the ground) in order to support both ends of the monopile 1 lying down. is provided.

In this embodiment, the pair of mounds 20, 20 are sized to support four monopiles 1 side by side. Therefore, when temporarily placing 32 monopiles, eight pairs of mounds are required.

The distance between the pair of mounds 20, 20 is such that the transport vehicle 9 can enter between the pair of mounds 20, 20.

The height of the mound 20 is lower than the height of the upper surface of the horizontal platform 12 when the transport vehicle 9 is jacked up (see FIG. 7A), and higher than the height of the upper surface of the horizontal platform 12 when the transport vehicle 9 is jacked down. (See FIG. 7(b)).

Therefore, when the transport vehicle 9, loaded with the monopile 1 in a jacked-up state, enters between the pair of mounds 20, 20, the mound 20 becomes lower than the monopile 1, and both ends of the monopile 1 are positioned above the mounds 20, 20. The part comes to be located (see FIG. 7(a)).

Further, when the transport vehicle 9 that has entered between the pair of mounds 20, 20 is jacked down, the monopile 1 can be deposited on the pair of mounds 20, 20, and the transport vehicle 9 is in an empty state between the pair of mounds 20, 20. (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 placement.

In a temporary storage place for the monopile 1, a pair of mounds (crushed stone mounds) 20, 20 for placing both ends of the monopile 1 lying down are preliminarily constructed on the floor surface (including the ground). This step corresponds to the mound construction step.

A monopile 1 carrier 80 carries in a plurality of monopiles 1 laid down (horizontally placed).

When the carrier ship 80 berths at the wharf 81 of the harbor, the monopile 1 is transferred from the carrier ship 80 onto the horizontal frame 12 of the carrier vehicle 9 . This step corresponds to a monopile placing step of placing the monopile 1 on the horizontal frame 12 of the transport vehicle 9 with both ends protruding. Thereby, the transport vehicle 9 can transport the monopile 1 .

In this monopile mounting process, when the monopile 1 is lifted from the transport ship 80 by a crane or the like and directly lowered onto the horizontal frame 12 of the transport vehicle 9, the monopile 1 of the suspended load is shaken on the horizontal frame 12 by the shaking of the transport ship 80. The monopile 1 may collide with the horizontal platform 12, and the impact load may act on the multi-axle truck 10. - 特許庁When placing the monopile 1 lying down on the horizontal frame 12, from the viewpoint of weight balance, the center of gravity of the monopile 1 should be the center of gravity of the transport vehicle 9 (for example, the center of gravity of the multi-axle trolley 10). I have a request to get closer. In order to cope with these problems, the present embodiment uses a method for transferring the monopile 1, which will be described later. The details will be described later with reference to FIGS. 10 and 11. FIG.

Returning to FIG. 9, the transport vehicle 9 on which the monopile 1 is mounted and the stopper members 15, 15 of the pair of left and right stopper mechanisms 14, 14 are in an upright state travels from the wharf, heads for the temporary storage site, and the monopile 1 to transport. When the transport vehicle 9 arrives at the temporary storage site, it enters between the pair of mounds 20 in a jacked-up state as shown in FIG. 7(a). In this process, the monopile 1 is transported by moving the transport vehicle 9 to a temporary storage place, the transport vehicle 9 is entered between the pair of mounds 20, 20 in a jacked-up state, and both ends of the monopile 1 are moved to the pair of mounds. 20, 20 corresponds to the transportation and positioning process.

After entering, the vehicle is jacked down as shown in FIG. 7(a). As a result, both ends of the monopile 1 can be left on the pair of mounds 20, 20 for temporary placement. After this, the carrier vehicle 9 becomes empty, leaves between the pair of mounds 20, 20, and can return to the wharf for carrying the next monopile 1.例文帳に追加This step corresponds to a temporary placement step in which the transport vehicle 9 is jacked down, both ends of the monopile 1 are placed temporarily on a pair of mounds 20, 20, and the transport vehicle 9 is withdrawn. When the transport vehicle 9 leaves between the pair of mounds 20, 20, the stopper members 15, 15 of the pair of left and right stopper mechanisms 14, 14 may be switched to the collapsed state.

In the above, the case of transporting from the dock to the temporary storage site and temporarily storing it has been explained. can be applied in the same way.

FIG. 8 is a process diagram for unloading from the temporary storage site.
In the process of FIG. 8(a), the carrier vehicle 9 enters under the monopile 1 supported by a pair of mounds 20, 20 in a jacked-down state.

In the process of FIG. 8(a), the transport vehicle 9 is jacked up, the monopile 1 is lifted by the horizontal frame 12, and both ends of the monopile 1 are lifted from the pair of mounds 20, 20. Thereby, the monopile 1 can be carried out. Therefore, the carrier vehicle 9 with the monopile 1 mounted thereon leaves the pair of mounds 20, 20 and heads for the dock.

In this embodiment, prior to the step of FIG. 8A, the stopper members 15, 15 of the pair of left and right stopper mechanisms 14, 14 are brought to the laid down state, and prior to the step of FIG. (just before jacking up), the stopper members 15, 15 of the pair of left and right stopper mechanisms 14, 14 are placed in an upright state. The stopper members 15, 15 of 14, 14 may be left standing.

FIG. 9 also shows how the transition piece 2 carried in in an upright position by the transport ship 80 is transported by another multi-axle truck 25 and temporarily placed in the transition piece temporary storage area in an upright position.

10 and 11 show a method of transferring the monopile 1 from the carrier 80 to the carrier vehicle 9. FIG.

First, as shown in FIG. 10(a), a pair of temporary supports 50, 50 are installed on the floor surface (including the ground) adjacent to the quay wall 81. As shown in FIG. This temporary support stand 50 is temporary. This step corresponds to the "temporary receiving frame installation step" of the present invention. An example of the temporary receiving stand 50 will be described later with reference to FIGS. 16 to 19. FIG.

In the present embodiment, the pair of temporary support stands 50, 50 are sized to support one monopile 1. As shown in FIG. The distance between the pair of temporary receiving racks 50, 50 is such that the transportation vehicle 9 can enter between the pair of temporary receiving racks 50, 50. As shown in FIG.

The height of the temporary support frame 50 is lower than the height of the upper surface of the horizontal frame 12 when the transport vehicle 9 is jacked up (see FIGS. 11(e) and (f)), and the horizontal frame when the transport vehicle 9 is jacked down. 12 is set to be higher than the height of the upper surface (see FIGS. 10(c) and (d)).

Next, as shown in FIG. 10(a), the monopile 1 is carried out from the transport ship 80 using a lifting means such as a crane, and the both ends of the monopile 1 laid down are attached to a pair of temporary supports 50, 50. be placed on. This step corresponds to the "cylindrical structure temporary receiving step" of the present invention. A pair of temporary receiving stands 50, 50 support both ends of the monopile 1 in a laid state.

Next, as shown in FIGS. 10(c) and (d), the transporting A vehicle 9 is entered in a jacked-down state. This step corresponds to the "first step" of the present invention. In this step, the loading platform 10b is lowered by the jack 10c to lower the horizontal frame 12 than the pair of temporary receiving frames 50, 50, and the transport vehicle 9 is entered between the pair of temporary receiving frames 50, 50. At the time of this approach, it is preferable to make the approach so that the center of gravity of the transport vehicle 9 (for example, the center of gravity of the multi-axle carriage 10) is directly below the center of gravity of the monopile 1.

Next, as shown in FIG. 11(e), the monopile 1 is lifted through the horizontal frame 12 by raising the loading platform 10b with the jack 10c (that is, by jacking up and lifting the monopile 1). 1 are lifted from the pair of temporary receiving mounts 50 , 50 . This step corresponds to the "second step" of the present invention. Thereby, the monopile 1 can be carried out.

Next, as shown in FIG. 11(f), the transport vehicle 9 on which the monopile 1 is mounted is withdrawn from between the pair of temporary receiving stands 50,50. This step corresponds to the "third step" of the present invention.

Here, the steps shown in FIGS. 10(c) to 11(f) correspond to the "transfer step" of the present invention. This transfer step is a step of transferring the monopile 1 mounted on the pair of temporary receiving racks 50, 50 to the transport vehicle 9, and includes the first to third steps described above.

In this embodiment, prior to the step shown in FIG. 10(C), the stopper members 15, 15 of the pair of left and right stopper mechanisms 14, 14 are put in a fallen state, and the state shown in FIG. E), the stopper members 15, 15 of the pair of left and right stopper mechanisms 14, 14 are placed in an upright state (for example, immediately before the above-mentioned jacking up). 11(f), the stopper members 15, 15 of the pair of left and right stopper mechanisms 14, 14 may remain in the upright state.

As described above, the monopile 1 is transferred from the transport ship 80 to the transport vehicle 9 via the pair of temporary support frames 50, 50. As shown in FIG.

According to this embodiment, the method for transferring a tubular structure (for example, monopile 1) is to transfer the tubular structure (for example, monopile 1) that has been transported by a carrier ship 80 from the carrier ship 80 to a transport vehicle 9 on land. It is a way to This method includes a step of installing a pair of temporary supports 50, 50 on land (see FIG. 10(a)), and carrying out a tubular structure (for example, monopile 1) from a carrier 80, forming a tubular structure. A cylindrical structure temporary receiving step (see FIG. 10 (a)) in which both ends of a structure (for example, a monopile 1) laid down are placed on a pair of temporary receiving racks 50, 50, and a pair of temporary receiving racks 50, a transfer step of transferring the cylindrical structure (for example, monopile 1) placed on 50 to the transport vehicle 9 (see FIGS. 10(c) to 11(f)). Therefore, the cylindrical structure (for example, the monopile 1) carried out from the carrier ship 80 can be temporarily received by the pair of temporary receiving racks 50, 50, and can be transferred from the temporary receiving racks 50, 50 to the carrier vehicle 9. . Therefore, compared with the case where the cylindrical structure (for example, the monopile 1) is directly lowered from the carrier 80 onto the carrier vehicle 9, it is possible to prevent an excessive load from acting on the carrier vehicle 9.

Further, according to the present embodiment, the transport vehicle 9 is a vehicle that transports a tubular structure (for example, the monopile 1) laid down. The transport vehicle 9 includes a loading platform 10b and a jack 10c for raising and lowering the loading platform 10b. A horizontal frame 12 that can be placed with a cylindrical structure (for example, monopile 1) lying on the upper surface and protruding from both ends thereof, and a cylindrical structure (for example, monopile 1) on the horizontal frame 12. ) are provided on both sides of the placement place, and stopper mechanisms 14, 14 are provided to prevent the cylindrical structure (for example, the monopile 1) from falling. Therefore, the cylindrical structure (for example, the monopile 1) can be safely transported using the multi-axle truck 10 in a laid state.

Further, according to the present embodiment, the above-described transfer process (see FIGS. 10(c) to 11(f)) includes a cylindrical structure (for example, monopile 1) below and between the pair of temporary support frames 50, 50, a first step (see FIGS. 10(c) and (d)), and after this first step, a jack 10c A second step (Fig. 11 (e)), and after the second step, a third step (see FIG. 11(f)) of withdrawing the transport vehicle 9 from between the pair of temporary receiving frames 50, 50. Therefore, the tubular structure (for example, the monopile 1) can be placed on the transport vehicle 9 with high accuracy.

Further, according to the present embodiment, in the above-described first step (see FIGS. 10C and 10D), the loading platform 10b is lowered by the jack 10c so that the horizontal platform 12 is positioned above the pair of temporary support platforms 50, 50. In the lowered state, the carrier vehicle 9 is entered between the pair of temporary receiving racks 50, 50. - 特許庁Therefore, the height of the temporary receiving frame 50 can be suppressed.

Further, according to this embodiment, the pair of left and right stopper mechanisms 14, 14 includes stopper members 15, 15 facing the cylindrical structure (for example, the monopile 1), and a driving device (for example, a hydraulic cylinder 16). As a result, the stopper member 15 can be switched between lying down and standing with a simple configuration.

Further, according to this embodiment, the tubular structure (for example, the monopile 1) constitutes a pile foundation for the offshore wind power generation facility 70. When transferring such a heavy cylindrical structure (for example, a monopile 1) from the carrier 80 to the carrier vehicle 9, the transfer method (see FIGS. 10 and 11) of the present embodiment is used. While being able to suppress that an excessive load acts on the vehicle 9, a cylindrical structure (for example, monopile 1) can be mounted on the transport vehicle 9 accurately.

Next, a second embodiment of the invention will be described with reference to FIGS. 12 to 14. FIG.
FIG. 12 is an overall view of a transport vehicle 9' in this embodiment. FIG. 13 is an enlarged view of the transport vehicle 9' shown in FIG. FIG. 14 shows a stopper mechanism corresponding to CC arrows in FIG.
Differences from the first embodiment described above will be described.

Also in this embodiment, the horizontal frame 12 is composed of a plurality of steel materials (H-shaped steel) 13 . In this regard, in this embodiment, the number of steel members 13 forming the horizontal frame 12 is 31, but the number of steel members 13 forming the horizontal frame 12 is not limited to 31.

In this embodiment, in order to prevent the monopile 1 placed on the horizontal frame 12 of the transport vehicle 9' from falling down, a pair of left and right stopper mechanisms are provided on the horizontal frame 12 so as to sandwich the mounting place of the monopile 1. 30, 30 are provided.

In this embodiment, two sets of a pair of left and right stopper mechanisms 30, 30 are provided on the horizontal base 12 in the front-rear direction. The stopper mechanism 30 is detachably attached to the horizontal frame 12 .

Each stopper mechanism 30 includes, for example, a plurality of (eg, three) horizontal connecting members 31, a plurality of (eg, two) horizontal members 32, a plurality of (eg, two) pillar members 33, and one head connecting member 34, a plurality of (for example, two) diagonal members 35, and one diagonal member connecting member 36. The horizontal connecting member 31, the horizontal member 32, the column member 33, the head connecting member 34, the diagonal member 35, and the diagonal member connecting member 36 are made of steel (H-shaped steel), for example.

A plurality of (for example, three) horizontal connecting members 31 each extend in the front-rear direction of the multi-axle truck 10 so as to straddle a plurality of (for example, three) steel members 13, They are arranged in parallel with a predetermined interval in the lateral direction of the carriage 10 . These horizontal connecting members 31 are detachably fixed on the horizontal frame 12 via fastening means such as bolts.

A plurality of (for example, two) horizontal members 32 each extend in the lateral direction of the multi-axle carriage 10 so as to straddle a plurality of (for example, three) horizontal connecting members 31 . They are arranged in parallel with a predetermined interval in the longitudinal direction of the axle truck 10 . These horizontal members 32 are fixed on a plurality of (for example, three) horizontal connecting members 31 .

A column member 33 is erected at the end of the horizontal member 32 facing the place where the monopile 1 is placed. A plurality of (for example, two) pillar members 33 each extend in the vertical direction and are arranged in parallel with each other at a predetermined interval in the front-rear direction of the multi-axle carriage 10 .

A plate-like cushioning material 37 made of rubber, for example, is attached to the surface of the upper portion of the pillar 33 facing the place where the monopile 1 is placed. This cushioning material 37 can abut on the peripheral surface of the monopile 1 and can be interposed between the monopile 1 and the column material 33 .

The head connecting member 34 extends in the front-rear direction of the multi-axle truck 10 so as to straddle a plurality of (for example, two) pillars 33 . The head connecting material 34 is fixed to the surface of the upper part of the pillar 33 opposite to the surface facing the place where the monopile 1 is placed.

A plurality of (for example, two) diagonal members 35 are arranged in parallel with each other at predetermined intervals in the longitudinal direction of the multi-axle carriage 10 . The diagonal member 35 has its upper end portion fixed to the surface of the upper portion of the column member 33 opposite to the surface facing the monopile 1 mounting place, and its lower end portion is fixed to the horizontal member 32 where the monopile 1 is placed. It is fixed to the end on the side opposite to the side facing the placement place.

The diagonal material connecting material 36 extends in the front-rear direction of the multi-axle carriage 10 so as to straddle the vertical central portion of each of the plurality of (for example, two) diagonal materials 35 .

A plate-like cushioning material 38 made of rubber, for example, is attached to a portion of the upper surface of the horizontal frame 12 (the upper surface of the steel member 13) corresponding to the place where the monopile 1 is placed. This cushioning material 38 can abut on the peripheral surface of the monopile 1 and can be interposed between the monopile 1 and the horizontal frame 12 .

In this embodiment, of the plurality of steel members 13 constituting the horizontal frame 12, side bars are attached to both ends of each of the two steel members 13 to which a pair of left and right stopper mechanisms 30, 30 are detachably fixed. 13a is attached. The side bar 13a is provided so as to straddle the end portion of the steel material 13 provided with the stopper mechanism 30 and the side edge portion of the loading platform 10b of the multi-axle carriage 10 in order to integrate them. The side bar 13a can function as a reaction force absorber for bearing the horizontal force acting on the stopper mechanism 30 from the monopile 1 mounted on the horizontal frame 12 of the transport vehicle 9'.

Therefore, in this embodiment, the transport vehicle 9' transports the monopile 1 in a lying state, and has a multi-axle carriage 10, a horizontal platform 12, a stopper mechanism 30, and a side bar 13a.

FIG. 15 shows a method of transferring the monopile 1 placed on the pair of temporary receiving racks 50, 50 from the temporary receiving racks 50, 50 to the transport vehicle 9'.

First, as shown in FIG. 15(a), the transport vehicle 9' is arranged on the right side of the monopile 1 placed on the pair of temporary support stands 50,50. Prior to or after this arrangement, the two front and rear left stopper mechanisms 30 are removed from the horizontal mount 12 . This step corresponds to the "detachment step" of the present invention.

Next, as shown in FIGS. 15(a) and (b), multiple The axle truck 10 is entered in a jacked down state. This step corresponds to the "first step" of the present invention. In this step, the loading platform 10b is lowered by the jack 10c to lower the horizontal frame 12 than the pair of temporary receiving frames 50, 50, and the carrier vehicle 9' is entered between the pair of temporary receiving frames 50, 50. At the time of this approach, it is preferable to make the approach so that the center of gravity of the transport vehicle 9 ′ (for example, the center of gravity of the multi-axle carriage 10 ) is directly below the center of gravity of the monopile 1 . Here, the "detachment process" described above can be performed prior to the "first process" described above.

Next, as shown in FIG. 15C, the two front and rear left stopper mechanisms 30 that were detached in the above-described "detachment process" are attached to the horizontal frame 12. Next, as shown in FIG. This step corresponds to the "mounting step" of the present invention.

Next, as shown in FIG. 15(d), the monopile 1 is lifted through the horizontal frame 12 by raising the loading platform 10b with the jack 10c (that is, by lifting the monopile 1 by jacking it up). 1 are lifted from the pair of temporary receiving mounts 50 , 50 . This step corresponds to the "second step" of the present invention. Thereby, the monopile 1 can be carried out. Here, the "mounting process" described above can be performed after the "first process" described above and prior to the "second process" described above.

Next, the transport vehicle 9 ′ on which the monopile 1 is mounted is withdrawn from between the pair of temporary support frames 50 , 50 . This step corresponds to the "third step" of the present invention.

Thus, in this embodiment, the monopile 1 placed on the pair of temporary receiving stands 50, 50 can be transferred from the temporary receiving stands 50, 50 to the transport vehicle 9'. It goes without saying that the left and right sides may be reversed in the description using FIG.

Here, the steps shown in FIGS. 15A to 15D can constitute the “transfer step” of the present invention. This transfer step is a step of transferring the monopile 1 mounted on the pair of temporary receiving frames 50, 50 to the transport vehicle 9', and in addition to the above-described first to third steps, the above-described detachment Including process and mounting process.

In particular, according to this embodiment, at least one of the pair of left and right stopper mechanisms 30, 30 is detachably attached to the horizontal base 12 (see FIG. 15). Prior to the above-described first step, at least one of the pair of left and right stopper mechanisms 30, 30 is removed from the horizontal frame 12 in the above-described transfer step that constitutes the method for transferring the tubular structure (for example, the monopile 1). After the detachment step (see FIGS. 15A and 15B) and the above-described first step and prior to the above-described second step, the pair of left and right stopper mechanisms 30, 30 are separated from each other. and a mounting step of mounting the attached side to the horizontal frame 12 (see FIGS. 15C and 15D). Incidentally, the stopper mechanism 30 may be prepared as a backup (in other words, as a spare part) when the stopper mechanism 14 fails.

In this embodiment, when the monopile 1 is unloaded from the temporary storage site shown in FIG. 8(a) (for example, immediately before jacking up), the detached one of the left and right stopper mechanisms 30, 30 may be mounted on the horizontal frame 12. As shown in FIG.

Also, when carrying the monopile 1 to the temporary storage site shown in FIG. At least one of the pair of left and right stopper mechanisms 30 , 30 may be removed from the horizontal frame 12 when 9 ′ is withdrawn.

Next, an example of the temporary support stand 50 applicable to the first and second embodiments described above will be described with reference to FIGS. 16 to 19. FIG.
FIG. 16 is a diagram showing a pair of temporary receiving stands 50s and 50c. 17 is a partially enlarged view of portion D of FIG. 16. FIG. FIG. 18 is a view showing the temporary receiving frame 50s corresponding to the arrow EE in FIG. 19 is a partially enlarged view of portion F of FIG. 16. FIG.

50 s of temporary receiving mounts support the straight part 7 of the monopile 1. As shown in FIG. The temporary support frame 50 c supports the conical portion 8 of the monopile 1 .

50 s of temporary receiving stands are provided with the base part 51 arrange|positioned on a floor surface (a ground is included), and the monopile receiving part 52 installed in the upper surface of the base part 51. As shown in FIG.

The base portion 51 has a three-layer structure in which a first layer 41, a second layer 42, and a third layer 43 are laminated in this order from bottom to top.

A first layer 41 , which is the lowest layer, is composed of a plurality of (for example, seven) steel materials (H-shaped steel) 45 . A plurality of (for example, seven) steel materials 45 extend, for example, in parallel with the extending direction of the monopile 1 placed on the temporary support frames 50s and 50c, and are spaced apart from each other in the lateral direction (horizontal direction) by a predetermined distance. are arranged parallel to each other.

The second layer 42 , which is an intermediate layer, is composed of a plurality of (for example, eight) steel materials (H-shaped steel) 46 . A plurality of (e.g., eight) steel materials 46 each extend in a direction perpendicular to the extending direction of the steel materials 45 so as to straddle a plurality of (e.g., seven) steel materials 45 . They are arranged in parallel with a predetermined interval in the existing direction.

The third layer 43, which is the uppermost layer, is composed of a plurality of (eg, ten) steel materials (H-shaped steel) 47. As shown in FIG. A plurality of (for example, 10) steel materials 47 extend in a direction orthogonal to the extending direction of the steel materials 46 so as to straddle a plurality of (for example, 8) steel materials 46 , and mutually extend. They are arranged in parallel with a predetermined interval in the existing direction.

The monopile receiving portion 52 is, for example, rectangular parallelepiped and made of steel. The monopile receiving portion 52 is fixed on the third layer 43, and the upper surface 53 of the monopile receiving portion 52 is formed with a recess 54 having an arc-shaped cross section. This recessed portion 54 is formed with a size capable of receiving a part of the peripheral surface of the straight portion 7 of the monopile 1 .

A plate-like cushioning material 55 made of rubber, for example, is attached to the recess 54 . The cushioning material 55 can abut on the peripheral surface of the straight portion 7 of the monopile 1 and can be interposed between the straight portion 7 of the monopile 1 and the recess 54 .

The temporary receiving frame 50c has substantially the same configuration as the temporary receiving frame 50s, but the upper portion (the upper surface 53 and the concave portion 54) of the monopile receiving portion 52 is inclined according to the shape of the peripheral surface of the conical portion 8 of the monopile 1. It differs from the temporary receiving stand 50s in that respect.

Since the above-described temporary receiving mounts 50s and 50c have a simple structure, they can be easily manufactured, and can be easily installed temporarily on the floor surface (including the ground).

In the first and second embodiments described above, in order to prevent the monopile 1 placed on the horizontal base 12 from rolling, a wooden camber, for example, may be inserted between the horizontal base 12 and the monopile 1. .

In the above description, the tubular structure to be transported and temporarily placed is the monopile of the offshore wind power generation facility, but the present invention is not limited to this, and can be applied to tubular structures in general.

In the above description, the cross-sectional shape of the cylindrical structure is circular, but the cross-sectional shape is not limited to circular, and may be oval or rectangular, for example.

The illustrated embodiments are only schematic illustrations of the invention, and the invention, in addition to what is directly indicated by the described embodiments, is subject to various modifications made by those skilled in the art within the scope of the claims.・It goes without saying that this includes changes.

DESCRIPTION OF SYMBOLS 1... Monopile (cylindrical structure), 2... Transition piece, 2d... Deck, 3... Tower, 4... Nacelle, 5... Blade, 7... Straight part, 8... Conical part, 9, 9'... Transport vehicle, 10 Multi-axis truck 10a Wheel 10b Bed 10c Jack 11 Connecting member 12 Horizontal frame 13 Steel material 13a Side bar 14 Stopper mechanism 15 Stopper member 15a Turn Axis 16 Hydraulic cylinder (driving device) 16a Rotating shaft 17 Connecting pin 18 Rectangular bar 20 Mound 25 Multi-axis truck 30 Stopper mechanism 31 Horizontal connecting member 32 Horizontal Material 33 Column material 34 Head connecting material 35 Diagonal material 36 Diagonal material connecting material 37, 38 Cushioning material 41 First layer 42 Second layer 43 Third layer 45 to 47 Steel materials 50, 50c, 50s Temporary receiving frame 51 Base portion 52 Monopile receiving portion 53 Upper surface 54 Recessed portion 55 Cushioning material 70 Offshore wind power generation facility 80 Carrier ship, 81... quay, BW... bottom of water, DL... surface of water

Claims (8)

A method of transferring a cylindrical structure transported by a carrier from the carrier to a land carrier vehicle,
A temporary receiving frame installation process for installing a pair of temporary receiving frames on land;
a cylindrical structure temporary receiving step of unloading the cylindrical structure from the carrier ship and placing both ends of the cylindrical structure in a laid state on the pair of temporary receiving stands;
a transfer step of transferring the cylindrical structure placed on the pair of temporary support frames to the transport vehicle;
A method for transferring a cylindrical structure, comprising: The transport vehicle is a vehicle that transports the tubular structure in a laid state,
The transport vehicle is
a plurality of multi-axle trolleys arranged in parallel and connected in the lateral direction, each including a loading platform and a jack for raising and lowering the loading platform;
a horizontal platform that is fixed across the loading platforms of the plurality of multi-axle carriages and that can be placed with a cylindrical structure lying on the upper surface and with both ends protruding;
a pair of left and right stopper mechanisms provided on the horizontal platform across a mounting place of the tubular structure, for preventing the tubular structure from falling;
The method for transferring a tubular structure according to claim 1, comprising: The transfer step includes
a first step of entering the transport vehicle below the tubular structure placed on the pair of temporary receiving stands and between the pair of temporary receiving stands;
After the first step, a second step of lifting both ends of the tubular structure from the pair of temporary supports by lifting the tubular structure by raising the loading platform with the jack;
a third step of withdrawing the transport vehicle from between the pair of temporary support frames after the second step;
3. The method for transferring a tubular structure according to claim 2, comprising: 4. In said first step, said loading platform is lowered by said jack so that said horizontal frame is lower than said pair of temporary receiving frames, and said transport vehicle is allowed to enter between said pair of temporary receiving frames. The method for transferring the cylindrical structure according to 1. The pair of left and right stopper mechanisms according to any one of claims 2 to 4, comprising a stopper member facing the cylindrical structure, and a drive device capable of laying down and standing up the stopper member. The transfer method of the tubular structure. 5. The method for transferring a cylindrical structure according to claim 2, wherein at least one of said pair of left and right stopper mechanisms is detachably attached to said horizontal frame. The transfer step includes
a detachment step of detaching at least one of the pair of left and right stopper mechanisms from the horizontal frame prior to the first step;
a mounting step of mounting the detached one of the pair of left and right stopper mechanisms to the horizontal frame after the first step and prior to the second step;
7. The method for transferring a tubular structure according to claim 6, when claim 6 is dependent on claim 3 or claim 4, further comprising: The method for transferring a tubular structure according to any one of claims 1 to 7, wherein the tubular structure constitutes a pile foundation for an offshore wind power generation facility.

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