CN219950269U - Offshore wind power major diameter single pile turns over structure - Google Patents

Abstract

The utility model relates to a large-diameter single pile turning structure for offshore wind power, which comprises the following components: a vessel; the steel pipe pile is placed on the ship, and an upper lifting lug and a lower lifting lug are respectively arranged on two sides of a pile body of the steel pipe pile; the floating crane comprises a main crane and an auxiliary crane, and the main crane and the auxiliary crane can respectively lift the upper lifting lug and the lower lifting lug of the steel pipe pile and are used for lifting the steel pipe pile; the turning-over module comprises a cantilever mechanism, wherein the cantilever mechanism is arranged on the top surface of the tail of the ship and comprises a cantilever part and a hanging lug, the hanging lug is arranged on the cantilever part, and when the steel pipe pile is lifted to the position of the turning-over module by the floating crane, the hanging lug is connected with a lower lifting lug of the steel pipe pile through a steel wire rope. According to the utility model, the turning operation of the steel pipe pile can be completed by using only one floating crane, so that the investment of turning equipment is reduced, the turning efficiency is improved, and the engineering cost is reduced; moreover, the turning height of the steel pipe pile can be reduced, the requirement on the lifting height of the floating crane is effectively reduced, and meanwhile, the turning safety of the steel pipe pile is improved.

Description

Offshore wind power major diameter single pile turns over structure

Technical Field

The utility model relates to the technical field of turning over of offshore steel pipe piles, in particular to a large-diameter single pile turning-over structure for offshore wind power.

Background

The method has a long coastline in China, has huge potential for developing offshore wind power, and is one of main directions of development of the power industry in China. With the large-scale development of offshore wind power, the application of the steel pipe pile in the maritime project is becoming more popular. The steel pipe pile adopted in offshore engineering has the characteristics of long length and heavy weight, the length is generally over sixty-ten meters, and the weight is over thousand tons. The steel pipe pile is generally manufactured into a finished product in a land steel pipe pile processing factory, and is laid down to an offshore construction site through a transportation barge to be driven. Because the steel pipe pile is generally horizontal during transportation, the steel pipe pile lying on the barge is lifted to be vertical before pile sinking construction, and pile sinking operation is performed after the posture of the steel pipe pile is adjusted to be vertical. Therefore, the operation of adjusting the steel pipe pile from the horizontal state to the vertical state (hereinafter referred to as "turning over of the steel pipe pile") is particularly important.

The traditional steel pipe pile turning construction steps are as follows:

(1) The lifting rigging is assembled on a deck of a main crane in advance, the upper end of the lifting rigging is hung on a main hook of the main crane, the crane is rotated to the position above the lifting lugs of the pile body of the foundation pile, and the lower end of the lifting rigging is hung on two main lifting lugs of the single pile;

(2) The auxiliary floating crane main hook is hooked with two steel wire rope rings, and the lower end of the sling is hung on a lifting lug at the bottom of the pipe pile;

(3) The main crane and the auxiliary floating crane head are slowly lifted to enable the single pile to be separated from the placing tool on the transport ship, the state of the hook head is checked, and the lifting is continued until the pipe pile is higher than the pipe pile binding tool on the transport ship after no abnormality exists, and the transport ship is driven off the site. The main hook of the main crane slowly rises, the auxiliary floating crane slowly descends, and the two cranes are mutually matched through the pitching, the turning and the winch of the arm support according to the change of the crane weight until the single pile is erected;

(4) And (5) unbuckling and cutting off the turning-over lifting lug.

At present, most projects adopt a welding turnover lifting lug to turn over the steel pipe pile, the steel pipe pile is horizontally lifted away from the deck of the barge through a main lifting lug and the turnover lifting lug, the steel pipe pile is moved to the upper side of the sea surface, then a steel wire rope connected with the turnover lifting lug is lowered to adjust the angle of the steel pipe pile, and after the steel pipe pile is in a vertical state, the turnover lifting lug is unbuckled and cut off to finish the turnover work of the steel pipe pile.

The turning-over lifting lug has the following defects: firstly, the existing offshore steel pipe pile turning-over process at least needs two offshore floating cranes to be matched. The offshore floating crane is in short supply because of the great demands of the offshore wind power project developed by the nation. Meanwhile, the offshore wind power installation has the characteristic of short construction window period, and the two offshore floating cranes are difficult to arrange in construction period, so that the traditional lifting lug type turnover cost is high. Secondly, in order to enable the steel pipe pile to be in a vertical state after turning over, two floating crane lifting lugs are generally connected with the highest position of the pile body of the steel pipe pile in a hanging mode, so that the hanging height of the steel pipe pile is higher. And thirdly, the climate is bad, the surge is large, the offshore hoisting construction is greatly influenced by the marine weather, the two floating cranes are required to simultaneously construct, the influence of sea condition factors such as the offshore wind and the wave on the turning operation of the steel pipe pile is required to be fully considered, and the risk is very high.

Disclosure of Invention

First, the technical problem to be solved

In order to solve the problems in the prior art, the utility model provides the offshore wind power large-diameter single pile turning structure, which can reduce the cost of turning operation of steel pipe piles.

(II) technical scheme

In order to achieve the above purpose, the main technical scheme adopted by the utility model comprises the following steps: an offshore wind power large-diameter single pile turning structure, comprising:

a vessel;

the steel pipe pile is placed on the ship, and an upper lifting lug and a lower lifting lug are respectively arranged on two sides of a pile body of the steel pipe pile;

the floating crane comprises a main crane and an auxiliary crane, wherein the main crane and the auxiliary crane can respectively lift an upper lifting lug and a lower lifting lug of the steel pipe pile and are used for lifting the steel pipe pile;

the turning-over module comprises a cantilever mechanism, wherein the cantilever mechanism is arranged on the top surface of the tail part of the ship, the cantilever mechanism comprises a cantilever part and a hanging lug, the hanging lug is arranged on the cantilever part, and when the steel pipe pile is lifted to the position of the turning-over module by the floating crane, the hanging lug is connected with a lower lifting lug of the steel pipe pile through a steel wire rope.

Further, the turn-over module further includes:

the hoisting equipment is arranged on the top surface of the tail part of the ship, and is connected with the lower lifting lug of the steel pipe pile through a steel wire rope when the steel pipe pile is lifted to the position of the turning-over module by the floating crane.

Further, the method further comprises the following steps:

the support frames are respectively arranged on the front side and the rear side of the top surface of the ship and are used for respectively supporting the front section and the rear section of the steel pipe pile.

Further, the turn-over module further includes:

the anti-collision block is arranged on the outer side wall of the tail end of the ship.

(III) beneficial effects

The beneficial effects of the utility model are as follows: the main crane and the auxiliary crane of the floating crane are respectively connected with the upper lifting lug and the lower lifting lug of the steel pipe pile, the steel pipe pile on the ship is lifted to the turnover module, the lower lifting lug of the steel pipe pile is connected with the hanging lug of the cantilever mechanism by using the steel wire rope, the lifting hook at the auxiliary crane is separated at the moment, and the lifting hook of the main crane is used for lifting operation, so that the turnover operation of the steel pipe pile can be completed. Therefore, the turning-over operation of the steel pipe pile can be completed by using only one floating crane, so that the investment of turning-over equipment is reduced, the turning-over efficiency is improved, and the engineering cost is reduced; in addition, in the process of lifting the steel pipe pile, the positions of the floating crane, at which the steel pipe pile is connected, are the upper lifting lug and the lower lifting lug, and the highest position of the steel pipe pile is not required to be connected by a lifting hook, so that the height of the turned steel pipe pile is reduced, the requirement on the lifting height of the floating crane is effectively reduced, the height of the turned steel pipe pile is reduced, and the turning safety of the steel pipe pile is improved.

Drawings

FIG. 1 is a schematic structural view of a large-diameter single pile turning structure for offshore wind power of the utility model;

FIG. 2 is a schematic diagram of the operation of the turning module for hoisting and turning a steel pipe pile in the utility model;

FIG. 3 is a working schematic diagram of the connection between the hanging lugs on the cantilever part and the hoisting equipment and the lower lifting lug of the steel pipe pile through steel wire ropes;

FIG. 4 is a schematic diagram of the operation of the main crane in preparation for lifting in accordance with the present utility model;

FIG. 5 is a schematic diagram of the operation of the main crane of the present utility model for lifting and tightening with hoisting equipment;

FIG. 6 is a schematic diagram of the operation of lifting a steel pipe pile to complete a turn-over operation in the present utility model;

[ reference numerals description ]

1. A vessel;

2. a support frame;

3. a steel pipe pile; 31. an upper lifting lug; 32. a lower lifting lug;

4. a turning-over module;

41. hoisting equipment;

42. a cantilever mechanism; 421. a cantilever member; 422. hanging lugs;

43. an anti-collision block;

5. a floating crane; 51. a main crane; 52. and (5) auxiliary hanging.

Detailed Description

The utility model will be better explained by the following detailed description of the embodiments with reference to the drawings.

Example 1

Referring to fig. 1 to 6, an offshore wind power large-diameter single pile turning structure comprises:

a ship 1;

a steel pipe pile 3 is placed on the ship 1, and an upper lifting lug 31 and a lower lifting lug 32 are respectively arranged on two sides of a pile body of the steel pipe pile 3;

the floating crane 5 comprises a main crane 51 and an auxiliary crane 52, wherein the main crane 51 and the auxiliary crane 52 can respectively lift the upper lifting lug 31 and the lower lifting lug 32 of the steel pipe pile 3 and are used for lifting the steel pipe pile 3;

the turning-over module 4 comprises a cantilever mechanism 42, wherein the cantilever mechanism 42 is arranged on the top surface of the tail of the ship 1, the cantilever mechanism 42 comprises a cantilever piece 421 and a hanging lug 422, the hanging lug 422 is arranged on the cantilever piece 421, and when the floating crane 5 lifts the steel pipe pile 3 to the position of the turning-over module 4, the hanging lug 422 is connected with the lower lifting lug 32 of the steel pipe pile 3 through a steel wire rope.

The cantilever mechanism 42 is used for turning over the steel pipe pile 3 by taking the hanging lugs 422 as a central shaft for turning over the steel pipe pile 3 and matching with the floating crane 5.

In this embodiment, the turning module 4 further includes:

the hoisting equipment 41, the hoisting equipment 41 set up in the top surface of boats and ships 1 afterbody, when floating crane 5 will steel-pipe pile 3 handling reaches when turning over the position of module 4, the hoisting equipment 41 pass through wire rope with the lower part lug 32 of steel-pipe pile 3 is connected, and its effect is that supplementary control steel-pipe pile 3 pile body is stable, avoids steel-pipe pile 3 to take place to empty.

In this embodiment, further comprising:

the support frames 2 are respectively arranged on the front side and the rear side of the top surface of the ship 1, and are used for respectively supporting the front section and the rear section of the steel pipe pile 3.

In this embodiment, the turning module 4 further includes:

the crash block 43 is provided on the outer wall of the tail end of the ship 1, and can protect the hull.

In summary, the turnover structure of the offshore wind power large-diameter single pile provided by the utility model has the following turnover work flow of the steel pipe pile 3:

(1) referring to fig. 1, a transport vessel 1 transports a steel pipe pile 3 to a construction site, and then, the vessel 1 is anchored;

(2) referring to fig. 3, after the ship 1 is stabilized, the steel pipe pile 3 is lifted to the turning module 4 by the main crane 52 and the auxiliary crane 52 of the floating crane 5, and inspection work before turning is performed.

(3) Referring to fig. 4, after the steel pipe pile 3 is in place, the lower lifting lug 332 of the steel pipe pile 3 is now connected with the hanging lug 422 of the turning-over module 4 by using a steel wire rope;

(4) connecting the hoisting equipment 41 with a lifting lug 332 at the lower part of the steel pipe pile 3 by using a steel wire rope;

(5) ensuring that the secondary hooks of the secondary crane 52 are separated on the premise of ensuring safety after the two steel wire ropes are installed;

(6) referring to fig. 5, the hook of the main crane 51 is ready for lifting.

(7) Referring to fig. 6, the main crane 51 performs a lifting operation, and the lifting process is required to pay attention to the state of the steel pipe pile 3 at any time;

(8) the hoisting equipment 41 is matched and tightened, so that the pile body is stable.

(9) After the pile body is wholly stable, loosening the steel wire ropes of the turning-over module 4 and the hoisting equipment 41; and lifting the steel pipe pile 3 to finish turning over operation.

The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent changes made by the specification and drawings of the present utility model, or direct or indirect application in the relevant art, are included in the scope of the present utility model.

Claims (4)

1. Offshore wind power major diameter mono-pile stands up structure, its characterized in that includes:

a vessel;

the steel pipe pile is placed on the ship, and an upper lifting lug and a lower lifting lug are respectively arranged on two sides of a pile body of the steel pipe pile;

the floating crane comprises a main crane and an auxiliary crane, wherein the main crane and the auxiliary crane can respectively lift an upper lifting lug and a lower lifting lug of the steel pipe pile and are used for lifting the steel pipe pile;

the turning-over module comprises a cantilever mechanism, wherein the cantilever mechanism is arranged on the top surface of the tail part of the ship, the cantilever mechanism comprises a cantilever part and a hanging lug, the hanging lug is arranged on the cantilever part, and when the steel pipe pile is lifted to the position of the turning-over module by the floating crane, the hanging lug is connected with a lower lifting lug of the steel pipe pile through a steel wire rope.

2. The offshore wind power large diameter mono-pile turning structure of claim 1, wherein the turning module further comprises:

the hoisting equipment is arranged on the top surface of the tail part of the ship, and is connected with the lower lifting lug of the steel pipe pile through a steel wire rope when the steel pipe pile is lifted to the position of the turning-over module by the floating crane.

3. The offshore wind power large diameter mono-pile turn-over structure of claim 1, further comprising:

the support frames are respectively arranged on the front side and the rear side of the top surface of the ship and are used for respectively supporting the front section and the rear section of the steel pipe pile.

4. The offshore wind power large diameter mono-pile turning structure of claim 1, wherein the turning module further comprises:

the anti-collision block is arranged on the outer side wall of the tail end of the ship.