阅读说明：本技术 一种新型自升式平台桩腿拼接方法 (Novel self-elevating platform pile leg splicing method ) 是由 孔国照 胡贤甫 罗文臣 郝璇 于 2021-09-02 设计创作，主要内容包括：本发明公开了一种新型自升式平台桩腿拼接方法,该方案利用平台自身的升降能力将被截断桩腿分离并固定于每个桩腿的升降装置处,从而达到降低桩腿高度,增加平台通过性的目的。(The invention discloses a novel splicing method for pile legs of a self-elevating platform.)

1. The utility model provides a novel splicing method of self-elevating platform spud legs, which is characterized in that: the truncated pile legs are separated and fixed at the lifting device of each pile leg by utilizing the lifting capacity of the platform, so that the aims of reducing the height of the pile legs and increasing the passing ability of the platform are fulfilled.

2. The novel splicing method for the self-elevating platform pile leg according to claim 1, characterized in that: a rotary structure base and an arc-shaped slideway for rotation are arranged at the lifting device of the self-elevating platform, the rotary structure base is fixed at the top of the lifting device through welding, and the arc-shaped slideway is welded on a sliding base at the outer side of the lifting device; the sliding base is composed of a round pipe and a square pipe structure and is fixed on the outer sides of the main deck and the lifting device through welding.

3. The novel splicing method for the self-elevating platform pile leg according to claim 2, characterized in that: the pile leg fixing device is characterized in that a hydraulic trolley is arranged on the arc-shaped slide way, a round pin shaft hole for allowing the hydraulic trolley to creep and a sliding structure are formed in the arc-shaped slide way, the sliding structure is welded on one side of a clamping plate II for fixing a pile leg, the clamping plate II fixes a clamping plate I, a pile leg rack supporting block and a pile leg rack together through bolts, and the sliding structure is connected with the hydraulic trolley through a hydraulic oil cylinder.

4. The novel splicing method for the self-elevating platform pile leg according to claim 2, characterized in that: the rotating structure is connected with the rotating structure base through a pin shaft, the outer side of the rotating structure is welded to the other side of a clamping plate II used for fixing the pile leg, and the clamping plate I, the pile leg rack supporting block and the pile leg rack are fixed together through bolts by the clamping plate II.

5. The novel splicing method for the self-elevating platform pile leg according to claim 1, characterized in that: and corresponding pile leg cushion blocks and pile leg anti-tilting elbow plates are arranged at the final stop positions of the cut pile legs and are used for fixing the cut pile legs.

6. The novel splicing method for the self-elevating platform pile leg according to claim 1, characterized in that: the platform rises to the height of the cut-off spud leg, fixes the clamping plate on the spud leg, cuts off the spud leg, and rotates 70 degrees by taking a pin shaft hole of a rotating structure as a center by utilizing the rotating structure and the sliding structure, so that the cut-off spud leg leaves the position of the spud leg.

7. The novel splicing method for the self-elevating platform pile leg according to claim 1, characterized in that: the platform has the advantages that the lifting capacity of the platform is utilized, the cut pile legs are lowered to the towing height along with the platform, so that the overall height of the platform is reduced, and the passing performance of the platform is improved.

8. The novel splicing method for the self-elevating platform pile leg according to claim 1, characterized in that: after the self-elevating platform passes through the bridge, the self elevating capability of the platform can be utilized, the cut-off pile leg is lifted to the height of the pile leg, the rotary structure and the sliding structure are recycled, the cut-off pile leg is pushed back to the original position of the pile leg, and the cut-off pile leg and the rest part of the pile leg are welded and fixed again, so that the splicing work of the pile leg is completed.

Technical Field

The invention relates to a novel splicing method for pile legs of a self-elevating platform, in particular to a novel splicing method for pile legs.

Background

The self-elevating platform is one kind of movable offshore drilling equipment, and is one of the most used drilling platforms for global offshore oil exploration. In the process of moving the self-elevating platform, pile legs are lifted to a main deck for more than one hundred meters, and can pass through a plurality of cross-sea/cross-river bridges (such as foreign bos-prunus sea bridges or domestic sutong bridges) during remote towing, because the bridge is limited from the clearance of the sea surface, the pile legs are required to be segmented and cut off before towing, and the cut-off pile legs are assembled and installed on the main deck of the platform after passing through the bridge. However, the invention skillfully utilizes the lifting function of the self-elevating platform, solves the problems of disassembly and assembly of the cut pile legs and greatly improves the efficiency of the bridge crossing of the self-elevating platform.

A scheme for splicing pile legs after a self-elevating platform moves across a bridge is explored, pile legs are cut off, an arc-shaped rail is respectively installed near the pile legs, the cut off parts are firstly placed on the rail, then a main ship body is lifted to a butt joint height, the pile legs placed on the arc-shaped rail are rotated and slide to a butt joint position along the rail, and welding connection is carried out. The problem of the whole-mounted platform gap bridge is solved. But it cuts the spud leg into multistage, and the equipment time is long, because need many times welding, hardly guarantees the precision of spud leg simultaneously.

Disclosure of Invention

In order to solve the defects, the invention aims to provide a convenient and quick splicing scheme for the pile legs of the self-elevating platform.

In order to achieve the purpose, the invention is realized by the following technical scheme: the cut-off pile legs are separated and fixed on the outer side of the lifting device of each pile leg, and the cut-off pile legs are lifted along with the platform by utilizing the lifting capacity of the platform, so that the aims of reducing the height of the pile legs and increasing the passing ability of the platform are fulfilled.

Furthermore, a rotating structure base and an arc-shaped slideway for rotation are arranged at the lifting device of the self-elevating platform, the rotating structure base is fixed at the top of the lifting device through welding, and the arc-shaped slideway is welded on a sliding base at the outer side of the lifting device; the sliding base is composed of a round pipe and a square pipe structure and is fixed on the outer sides of the main deck and the lifting device through welding.

Furthermore, a hydraulic trolley is arranged on the arc-shaped slide way, a round pin shaft hole for allowing the hydraulic trolley to creep and a sliding structure are formed in the arc-shaped slide way, the sliding structure is welded on one side of a clamping plate II for fixing the pile leg, the clamping plate I, the pile leg rack supporting block and the pile leg rack are fixed together through bolts by the clamping plate II, and the sliding structure is connected with the hydraulic trolley through a hydraulic oil cylinder.

Furthermore, the rotating structure is connected with the rotating structure base through a pin shaft, the outer side of the rotating structure is welded to the other side of a clamping plate II used for fixing the pile leg, and the clamping plate I, the pile leg rack supporting block and the pile leg rack are fixed together through bolts by the clamping plate II.

Further, corresponding leg cushion blocks and leg anti-tilt toggle plates are arranged at the final stop positions of the truncated legs and used for fixing the truncated legs.

Further, the platform rises to the height of the cut-off spud leg, fixes the clamp plate on the spud leg, cuts off the spud leg, and utilizes the rotating structure and the sliding structure to rotate the cut-off spud leg by 70 degrees by taking the pin shaft hole of the rotating structure as the center, and the cut-off spud leg leaves the position of the spud leg.

Further, the platform is utilized to be capable of lifting, the cut pile legs are lowered to the towing height along with the platform, so that the overall height of the platform is reduced, and the passing performance of the platform is improved.

Further, after the self-elevating platform passes through the bridge, the self lifting capacity of the platform can be utilized, the cut-off pile legs are lifted to the height of the pile legs, the rotary structure and the sliding structure are recycled, the cut-off pile legs are pushed back to the original positions of the pile legs, the cut-off pile legs and the rest pile legs are welded and fixed again, and therefore splicing work of the pile legs is completed.

Compared with the prior art, the invention has the following beneficial effects:

the invention utilizes the self lifting function to replace the lifting work of the floating crane, thereby saving the cost of renting the floating crane. Meanwhile, the pile leg is only required to be cut off and welded once, so that the installation working time of the pile leg disassembly and splicing is saved, and the precision of the pile leg is ensured. In addition, the lifting function of the platform is not influenced by the depth of the operation water, so that the problem that the large-scale floating crane cannot operate in a shallow water area can be solved.

Drawings

Fig. 1 is a schematic view of the structure of the pile leg before the pile leg is cut off.

Fig. 2 is a schematic view of the truncated leg structure of the present invention.

Fig. 3 and 4 are schematic views of the sliding structure of the present invention.

Fig. 5 is a side view of the sliding structure of the present invention.

Fig. 6 is a schematic structural view of the sliding base according to the present invention.

Fig. 7 is a schematic view of a rotary structure of the present invention.

Fig. 8 and 9 are side views of the rotating structure of the present invention.

Fig. 10, 11 and 12 are schematic views of the structure of the leg rack clamp plate of the present invention.

Fig. 13 and 14 are schematic structural views of the parking position of the pile leg after rotation.

Figure 15 is a schematic view of the integrated platform of the present invention after the leg is cut and displaced.

Fig. 16, 17, 18, 19, 20 show the specific working flow of the leg rotation according to the solution of the invention.

Wherein: 1. the pile leg anti-overturning device comprises a rotating structure base, 2, a rotating structure, 2-1, a rotating pin shaft, 3, an arc-shaped slideway, 3-1, a circular pin shaft hole, 4, a sliding structure, 5, a hydraulic oil cylinder, 6, a hydraulic trolley, 7, a cut pile leg, 8, a lifting structure, 9, the rest pile leg, 10, a pile leg cushion block, 11, a pile leg anti-overturning elbow plate, 12, a bolt, 13, a clamping plate I, 14, a rack supporting block, 15, a clamping plate II, 16, a rack, 17, a square tube, 18, a round tube, 19, a main deck, 20 and a sliding base.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-2, a rotation structure base 1 and an arc-shaped slideway 3 for rotation are arranged at the lifting device of the self-elevating platform, the rotation structure base 1 is fixed on the top of the lifting device 8 by welding, and the arc-shaped slideway 3 is welded on a sliding base 20 at the outer side of the lifting device 8. The sliding structure 4 is connected with a hydraulic trolley 6 through a hydraulic oil cylinder 5.

As shown in fig. 3, 4 and 5, the arc-shaped slideway 3 is provided with a hydraulic trolley 6, a circular pin shaft hole 3-1 for the hydraulic trolley 6 to crawl and a sliding structure 4, and the sliding structure 4 is welded on one side of a clamping plate II 15 for fixing a pile leg. The sliding principle is that the hydraulic climbing trolley 6 placed on the arc-shaped rail 3 crawls along the arc-shaped rail 3, so that the cut pile leg 7 slides along the arc-shaped rail 3.

As shown in fig. 6, the slide base 20 is composed of a circular tube 18 and a square tube 17, and is fixed to the main deck 19 and the outside of the lifting device 8 by welding.

As shown in fig. 7, 8 and 9, the rotating structure 2 is connected with the rotating structure base 1 through a pin shaft 2-1, the outer side of the rotating structure 2 is welded to the other side of a clamping plate II 15 for fixing a pile leg, and the clamping plate II 15 fixes an outer clamping plate I13, a pile leg rack supporting block 14 and a pile leg rack 16 together through a bolt 12. This application does not change the rotation center who is cuted spud leg 7, also can not hang from the platform body by cutting spud leg 7 simultaneously, can the effectual precision of guaranteeing the spud leg. The rotation principle is that the crawling hydraulic trolley 6 placed at the arc-shaped slide way 3 crawls along the arc-shaped slide way 3, so that the cut pile leg 7 rotates around the rotation center of the rotating structure 2 to separate from the original position of the pile leg.

As shown in fig. 10, 11 and 12, the clamp plate ii 15 fixes the clamp plate i 13, the leg rack support block 14 and the leg rack 16 together through the bolt 12.

As shown in fig. 13, 14, at the final rest position of the truncated leg 7, corresponding leg pad blocks 10 and leg anti-roll toggle plates 11 are provided for securing the truncated leg 7.

Fig. 15 is a schematic view of the integral platform after the leg is cut and displaced according to the present invention.

The use method of the invention comprises the following steps: firstly, the platform is lifted to the height of the cut-off spud leg 7, the clamping plate II 15 is fixed on the spud leg, then the spud leg is cut off, and the cut-off spud leg 7 rotates by 70 degrees by taking a pin shaft hole of the rotating structure 2 as a center by utilizing the rotating structure 2 and the sliding structure 4, so that the cut-off spud leg 7 leaves the position of the spud leg.

Then, by utilizing the lifting function of the self-elevating platform, the cut-off pile legs 7 are lowered to the towing height along with the platform, so that the overall height of the platform is reduced, and the passing ability of the platform is increased.

Finally, after the self-elevating platform passes through the bridge, the self-elevating function of the platform is utilized, the cut-off pile leg 7 is lifted to the height of the pile leg, the rotating structure 2 and the sliding structure 4 are reused, the cut-off pile leg 7 is pushed back to the original position of the pile leg, the cut-off pile leg 7 and the rest pile leg 9 are welded and fixed again, and therefore splicing work of the pile leg is completed.

Referring to fig. 16-20, the specific working process of the pile leg rotation according to the present invention is as follows:

firstly, a hydraulic trolley 6, a hydraulic oil cylinder 5 and a sliding structure 4 are connected by a pin shaft, secondly, a locking pin shaft of the hydraulic trolley is loosened, the hydraulic oil cylinder 5 is used for pushing the hydraulic trolley 6 forwards to the next round pin shaft hole 3-1, then, the pin shaft of the hydraulic trolley 6 is locked at the round pin shaft hole 3-1, and finally, a cut pile leg 7 is pulled forwards by the hydraulic oil cylinder 5. The above operations are repeated until the truncated leg 7 is rotated to the designated position.

The invention utilizes the lifting function of the platform to replace the lifting work of the floating crane, saves the cost of renting the floating crane, saves the installation working time of the pile leg disassembly and splicing, and can solve the problem that the large floating crane cannot operate in a shallow water area because the lifting function of the platform is not influenced by the operating depth. The invention can utilize the arc slideway 3 to store the cut-off pile leg 7 without arranging a pile leg transport ship additionally.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.