Platform transformation structure and installation platform thereof

Abstract

The utility model belongs to the field of ocean engineering, and discloses a platform transformation structure and a mounting platform thereof, and the platform transformation structure comprises a heightened base, an impeller platform and a hub base; the heightened base is arranged on a main deck of the mounting platform and is used for arranging crane equipment; the impeller platform is arranged on the broadside of the mounting platform and extends out of the mounting platform; the hub base is arranged on the impeller platform and used for fixing an impeller hub; according to the platform transformation structure, the offshore installation platform can be reasonably transformed, so that the offshore installation platform has the capacity of efficiently installing the offshore wind turbine generator, and the problems that when a wind turbine generator set with large megawatt capacity is hoisted by an existing wind power installation ship, ship machines are not adapted, the installation efficiency is limited, and the construction risk is high are solved.

Description

Technical Field

[0001] The utility model belongs to the field of marine engineering, and specifically relates to a platform transformation structure and an installation platform thereof. Background Art

[0002] At present, as the construction of wind power in shallow waters is becoming saturated, offshore wind power has moved towards deep waters. The deep-water construction and large-scale unit capacity of offshore wind power have put forward higher requirements on the construction difficulty and construction cost. At present, among the outrigger ships serving offshore wind power, there are professional wind power installation ships. Most of the ones put into production are third-generation wind power installation ships, which are suitable for water depths below 50m, pile leg lengths below 90m, equipped with pile-wrapped cranes (i.e. crane equipment), and deck heights are mostly below 108m. They are mostly active in the installation of offshore wind turbines with a capacity of less than 8MW in shallow waters. However, as the construction of offshore wind power is fully pushed towards deep waters and large-scale unit capacity, the existing wind power installation ships are used in the new round of offshore wind power construction, and they have gradually exposed problems such as too short available pile legs, insufficient lifting height, and limited impeller turning. At present, the wind turbine installation method of wind power installation ships mostly adopts "integrated impeller lifting", which requires crane equipment to lift the tower (also known as the tower tube) and turn it over. In addition, the impeller needs to be assembled on the deck, and one of the blades needs to cross the deck and be lifted by the crane equipment to turn the impeller over the main deck. This method has low installation cost and is relatively efficient. At present, the equipment level of professional wind power installation ships in my country is not highly adaptable to offshore wind power construction in deep water areas, and the coverage is not wide. Faced with the increase in tower weight and blade length caused by the large-scale capacity of wind turbine units, there is a great risk of collision damage during the installation process of tower turning, impeller assembly and turning over. At present, there is a lack of a platform transformation structure to rationally transform the installation platform in deep water areas, so that it has the ability to efficiently install offshore wind turbines, and solve the problems of ship-machine incompatibility, limited installation efficiency and high construction risks in the past when wind power installation ships lifted large megawatt capacity wind turbines.

[0003] Therefore, a new technology is needed to solve the problem of lack of a platform transformation structure in the prior art. Utility Model Content

[0004] In order to solve the above problems in the prior art, the utility model provides a platform transformation structure, which can rationally transform the offshore installation platform so that it has the ability to efficiently install offshore wind turbines, thereby solving the problems of the previous wind power installation ship hoisting large megawatt wind turbine units, such as the lack of ship-machine adaptability, limited installation efficiency and high construction risks.

[0005] The utility model adopts the following technical solutions:

[0006] A platform reconstruction structure comprises a heightened base, an impeller platform and a hub base; the heightened base is arranged on the main deck of the installation platform and is used to set up crane equipment; the impeller platform is arranged on the side of the installation platform and extends outward from the installation platform; the hub base is arranged on the impeller platform and is used to fix the impeller hub.

[0007] Furthermore, the raised base includes a first bottom section, a second bottom section and a third bottom section; the second bottom section is arranged on the first bottom section, and the third bottom section is arranged on the second bottom section; the first bottom section is arranged in the middle area of ​​the platform stern where the main deck of the installation platform is installed; the third bottom section is used to set up the crane equipment.

[0008] Furthermore, the first bottom section is one of a square tube structure, a cylindrical structure, and a prismatic tube structure.

[0009] Furthermore, the second bottom section is a variable cross-section transition section; the lower end of the second bottom section is connected to the upper end of the first bottom section; the upper end of the second bottom section is connected to the lower end of the third bottom section; wherein the lower end opening of the second bottom section is larger than its upper end opening.

[0010] Furthermore, the third bottom section is a cylindrical structure.

[0011] Furthermore, the impeller platform includes a platform plate, a plurality of stiffening ribs and a plurality of cantilever beams; a plurality of the cantilever beams are arranged on the side of the mounting platform and cantilevered outward from the mounting platform; a plurality of the stiffening ribs are arranged at the bottom of the platform plate; the platform plate and the stiffening ribs are arranged on the cantilever beams, and the platform plate is connected to the side of the mounting platform.

[0012] Furthermore, the stiffening ribs are one or more of “L”-shaped stiffening ribs, “I”-shaped stiffening ribs, “T”-shaped stiffening ribs, and “U”-shaped stiffening ribs.

[0013] Furthermore, the cantilever beams include a first type of cantilever beam and a second type of cantilever beam;

[0014] The first type of cantilever beam comprises a first extension section and a second extension section, one end of the first extension section is connected to one end of the second extension section, and the other end of the second extension section is connected to the side of the mounting platform; wherein the first extension section is a cantilever beam section with a constant cross-sectional height, and the second extension section is a cantilever beam section with a variable cross-sectional height;

[0015] The second type of cantilever beam includes a first segment, a transition segment and a second segment, one end of the first segment is connected to one end of the transition segment, the other end of the transition segment is connected to one end of the second segment, and the other end of the second segment is connected to the side of the mounting platform; wherein the first segment is a cantilever beam segment with a uniform cross-sectional height; the transition segment and the second segment are both cantilever beam segments with a variable cross-sectional height.

[0016] Furthermore, the hub base is provided with a fixing portion, the fixing portion is provided with a plurality of fixing holes, and the fixing holes are used for temporary fixing of the fan hub.

[0017] Another purpose of the utility model is to provide an installation platform, so that people can rationally utilize idle offshore installation platforms through platform modification structure, improve the use function and use space of the offshore installation platform, and facilitate people to efficiently install large-capacity offshore wind turbines in deep water areas.

[0018] A mounting platform comprises the platform transformation structure, a crane device and a plurality of pile legs; the crane device is arranged on the elevated base; and a plurality of pile legs are arranged on the main body of the mounting platform for fixing the mounting platform.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] The utility model discloses a platform transformation structure, which comprises a heightened base, an impeller platform and a hub base, wherein the heightened base is arranged on the main deck of the installation platform, which is higher than the previous bottom foundation, and can facilitate the crane equipment to hoist large-scale wind turbine components, thereby solving the problem that there is a risk of collision and damage when hoisting large-scale wind turbine components due to the fact that the bottom foundation is too low and the height of the crane equipment is not enough in the past; the utility model adds an impeller platform to the side of the installation platform, and the impeller platform is cantilevered outwardly, so that the space outside the side of the installation platform can be reasonably utilized; the impeller platform is provided with a hub base, which can be used to temporarily fix the hub of the wind turbine The impeller platform is cantilevered outside the side, which can avoid the blades of the wind turbine from passing through the main deck during assembly, thereby improving the safety of operation. At the same time, the impeller platform can also expand the space of the installation platform outward, thereby avoiding the embarrassing situation that the plane space of the main deck of the installation platform is insufficient to accommodate the wind turbine components. The arrangement of the heightened base, impeller platform and hub base meets the stress and strain requirements of numerical calculation after structural modification, and has little effect on the main body stability of the installation platform. It is a reliable modification solution and is very suitable for application on idle offshore installation platforms to improve the utilization rate of offshore installation platforms.

[0021] The utility model provides a novel installation platform, which improves the use function and use space of the installation platform, and can facilitate people to efficiently install large-capacity offshore wind turbines in deep water areas. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The technology of the utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments:

[0023] Figure 1 It is a plan view of the platform transformation structure of the utility model arranged on the installation platform;

[0024] Figure 2 It is a plan view of the utility model platform modification structure and the installation platform used to install wind turbine components (wherein the wind power foundation and tower are briefly illustrated);

[0025] Figure 3 It is a mid-longitudinal section view of the heightened base of the utility model (wherein the main deck is represented by a mass line);

[0026] Figure 4 yes Figure 3 A mid-section view of the raised base (where the main deck is represented by a massed line);

[0027] Figure 5 yes Figure 3 Schematic diagram of the cross section at PP (where the cylindrical wall and vertical ribs are represented by lines with mass);

[0028] Figure 6 yes Figure 3 Schematic diagram of the cross section at QQ (where the cylindrical wall, vertical ribs and ring ribs are represented by lines with mass);

[0029] Figure 7 yes Figure 3 Schematic diagram of the cross section at RR (where the cylindrical wall, vertical ribs and ring ribs are represented by lines with mass);

[0030] Figure 8 yes Figure 3 Schematic diagram of the cross section at SS (where the cylindrical wall, vertical ribs and ring ribs are represented by lines with mass);

[0031] Fig. 9 yes Figure 3 Schematic diagram of the cross section at WW (where the vertical ribs are represented by lines with mass);

[0032] Fig.10 yes Figure 3 Schematic diagram of the cross section at ZZ (where the vertical ribs are represented by lines with mass);

[0033] Fig.11 It is a plan view of the impeller platform of the utility model arranged at the junction of the tail side and the side of the body (wherein the cantilever beam, stiffening ribs, transverse stiffening components and longitudinal stiffening components are represented by mass lines);

[0034] Fig.12 yes Fig.11 Schematic diagram of the cross section of the impeller platform at X1-X1 (the cantilever beam at this location is a first-class cantilever beam) (where the platform plate, stiffening ribs, and reinforcement components are represented by lines with mass);

[0035] Fig.13 yes Fig.11 Schematic diagram of the cross section of the impeller platform at X2-X2 (the cantilever beam at this location is a second-type cantilever beam) (where the platform plate, stiffening ribs, and reinforcement components are represented by mass lines);

[0036] Fig.14 yes Fig.13 Sectional view at Y1-Y1 (where the web is represented by a line with mass);

[0037] Fig.15 yes Fig.13 Sectional view at Y2-Y2 (where the web and bottom plates are represented by lines with mass);

[0038] Fig.16 yes Fig.13 Sectional view at Y3-Y3 (where the web and bottom plates are represented by lines with mass);

[0039] Fig.17 yes Fig.13 Sectional view at Y4-Y4 (where the web and hole stiffeners are represented by mass lines);

[0040] Fig.18 yes Fig.11 Schematic diagram of the cross section of the impeller platform at X3-X3;

[0041] Fig.19 It is a three-dimensional schematic diagram of the hub base of the utility model.

[0042] Reference numerals:

[0043] 1- raised base; 11- first bottom section; L2- length; L3- width; 12- second bottom section; 13- third bottom section; H1- height; H2- height; H3- height; K- center axis; PP- section symbol; QQ- section symbol; RR- section symbol; SS- section symbol; WW- section symbol; ZZ- section symbol; O- diameter;

[0044] 2-impeller platform; 21-platform plate; 22-stiffening rib; 23-cantilever beam; 231-first type cantilever beam; C-first extension section; D-second extension section; 232-second type cantilever beam; E-first segment; F-transition segment; G-second segment; 24-lightening hole; 241-hole stiffening; X1-X1-section symbol; X2-X2-section symbol; X3-X3-section symbol; 25-web plate; 26-strengthening component; 27-bottom plate;

[0045] 3-wheel hub base; 31-fixing part; 311-fixing hole;

[0046] 4-installation platform; 41-main deck; 42-crane equipment; A-stern side; B-side side; J-bow; L1-total longitudinal length; M-mid-longitudinal plane; N-mid-longitudinal line; 43-legs; 44-transverse stiffening assembly; 45-longitudinal stiffening assembly; T1-transverse; T2 longitudinal;

[0047] 5-hub; 61-vertical rib; 62-annular rib; 7-blade; 8-side auxiliary crane; 91-wind turbine foundation; 92-tower. DETAILED DESCRIPTION

[0048] The following will be combined with the embodiments and drawings to clearly and completely describe the concept, specific structure and technical effects of the utility model, so as to fully understand the purpose, scheme and effect of the utility model. It should be noted that the embodiments and features in the embodiments in this application can be combined with each other without conflict. The same reference numerals used throughout the drawings indicate the same or similar parts.

[0049] It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature, or it can be indirectly fixed or connected to the other feature. In addition, the descriptions of up, down, left, right, etc. used in the present invention are only relative to the relative positional relationship of the components of the present invention in the accompanying drawings.

[0050] Reference Figures 1 to 19 A platform modification structure comprises a heightened base 1, an impeller platform 2 and a hub base 3; the heightened base 1 is arranged on the main deck 41 of the mounting platform 4, and is used to set up a crane device 42; the impeller platform 2 is arranged on the side of the mounting platform 4 and extends outward from the mounting platform 4; the hub base 3 is arranged on the impeller platform 2, and is used to fix the impeller hub 5.

[0051] Reference Figures 1 to 10In one embodiment, the raised base 1 includes a first bottom section 11, a second bottom section 12 and a third bottom section 13; the second bottom section 12 is arranged on the first bottom section 11, and the third bottom section 13 is arranged on the second bottom section 12; the first bottom section 11 is arranged in the middle area of ​​the platform tail of the main deck 41 of the installation platform 4; the third bottom section 13 is used to set the crane equipment 42.

[0052] In one embodiment, the first bottom section 11 is one of a square tube structure, a cylindrical structure, and a prismatic structure; wherein the square tube structure has a square cross section (such as a rectangle), the cylindrical structure has a circular cross section, and the prismatic structure has a regular polygonal cross section (such as a regular hexagon). Figures 1 to 10 In this embodiment, the first bottom section 11 is a square cylindrical structure.

[0053] Reference Figures 1 to 10 In one embodiment, the second bottom section 12 is a variable cross-section transition section; the lower end of the second bottom section 12 is connected to the upper end of the first bottom section 11; the upper end of the second bottom section 12 is connected to the lower end of the third bottom section 13; wherein, the second bottom section 12 is a table-shaped body, and the lower end opening of the second bottom section 12 is larger than the upper end opening; the variable cross-section design of the second bottom section 12 can avoid stress concentration at the connection caused by the sudden change from the first bottom section 11 to the third bottom section 13 (i.e., stress concentration (at the connection) caused by the sudden change of the non-uniform cross-sectional size).

[0054] Reference Figures 1 to 10 In one embodiment, the third bottom section 13 is a cylindrical structure.

[0055] Reference Figures 1 to 10 In one embodiment, the first bottom segment 11, the second bottom segment 12 and the third bottom segment 13 are each provided with a plurality of vertical ribs 61 in the vertical direction; the second bottom segment 12 and the third bottom segment 13 are each provided with a plurality of annular ribs 62 in the circumferential direction.

[0056] Reference Figures 1 to 10 In one embodiment, the vertical ribs 61 are one or more of "T"-shaped ribs, "I"-shaped ribs, and "L"-shaped ribs; the annular ribs 62 are also one or more of "T"-shaped ribs, "I"-shaped ribs, and "L"-shaped ribs.

[0057] Reference Figures 1 to 10In one embodiment, the longitudinal length L2 of the first bottom section 11 is 13420 mm, the transverse width L3 is 12200 mm, and the height H1 of the first bottom section 11 is 2000 mm; the second bottom section 12 is arranged on the first bottom section 11, and the height H2 of the highest point from the main deck 41 is 10000 mm; the third bottom section 13 is arranged on the second bottom section 12, and the height H3 of the highest point from the main deck 41 is at least 29000 mm; the outermost diameter O of the third bottom section is 8690 mm, and the wall thickness of the circular cylinder wall is 80 mm.

[0058] Reference Figures 1 to 10 In one embodiment, the central axis K of the elevated base 1 is located on the middle longitudinal plane M of the mounting platform 4, and the length L2 of the first bottom section 11 thereof spans FR27 to FR32 of the mounting platform. This arrangement is conducive to improving the stability of the elevated base 1 and reducing the impact of structural modification on the mounting platform; wherein, FR is the rib position number, FR0 is at the bow J of the mounting platform 4, and FR32 is at the tail of the mounting platform 4. A total of FR0 to FR32 rib positions are arranged on the middle longitudinal line N of the mounting platform 4, and the spacing between two adjacent rib positions is: the total longitudinal length L1 / 32; in this embodiment, FR27 and FR32 are both strong rib positions, which can meet the setting requirements of the elevated base 1.

[0059] Reference Figure 1 and Fig.11 In one embodiment, the impeller platform 2 is arranged at the junction of the rear side A and the side side B of the mounting platform 4.

[0060] Reference Figure 1 , Figures 11 to 18 In one embodiment, the impeller platform 2 includes a platform plate 21, a plurality of stiffening ribs 22 and a plurality of cantilever beams 23; a plurality of the cantilever beams 23 are arranged on the side of the mounting platform 4 and cantilevered outward from the mounting platform 4; a plurality of the stiffening ribs 22 are arranged at the bottom of the platform plate 21; the platform plate 21 and the stiffening ribs 22 are arranged on the cantilever beams 23, and the platform plate 21 is connected to the side of the mounting platform 4.

[0061] Reference Figure 1 , Figures 11 to 18 In one embodiment, the stiffening ribs 22 are one or more of “L”-shaped stiffening ribs, “I”-shaped stiffening ribs, “T”-shaped stiffening ribs, and “U”-shaped stiffening ribs.

[0062] Reference Fig.11 In one embodiment, the stiffening ribs 22 are arranged on the platform plate 21. When viewed from above, they are regarded as line segments with mass, and their planar layout is composed of multiple broken lines.

[0063] Reference Fig.11 In one embodiment, the platform plate 21 is a special-shaped flat plate formed by splicing a plurality of steel plates.

[0064] Reference Figure 1 , Figures 11 to 18 In one embodiment, the plurality of cantilever beams 23 include a first type of cantilever beam 231 and a second type of cantilever beam 232;

[0065] The first type of cantilever beam 231 includes a first extension section C and a second extension section D, one end of the first extension section C is connected to one end of the second extension section D, and the other end of the second extension section D is connected to the side of the mounting platform 4; wherein the first extension section C is a cantilever beam section with a constant cross-sectional height, and the second extension section D is a cantilever beam section with a variable cross-sectional height; the variable cross-sectional design can avoid stress concentration (at the connection) caused by sudden changes in non-uniform cross-sectional dimensions, and the design can improve the bending and shearing resistance of the cantilever beam, and adapt to changes in bending moment along the length of the cantilever beam;

[0066] The second type of cantilever beam 232 includes a first section E, a transition section F and a second section G, wherein one end of the first section E is connected to one end of the transition section F, the other end of the transition section F is connected to one end of the second section G, and the other end of the second section G is connected to the side of the mounting platform 4; wherein the first section E is a cantilever beam section with a constant cross-sectional height; the transition section F and the second section G are both cantilever beam sections with variable cross-sectional heights; the transition section F and the second section G can avoid stress concentration (at the connection) caused by sudden changes in non-uniform cross-sectional dimensions, and the design can improve the bending and shearing resistance of the cantilever beam and adapt to changes in bending moment along the length of the cantilever beam.

[0067] In one embodiment, referring to Fig.12 and Fig.18 , the second extension section D is provided with a lightening hole 24; Fig.13 , the second segment G is provided with a lightening hole 24 .

[0068] Reference Figure 1 and Fig.11In one embodiment, the cantilever beam 23 is provided at least in nine locations; among them, the cantilever beams 23 at two locations are first-type cantilever beams 231, and the cantilever beams 23 at seven locations are second-type cantilever beams 232; in this embodiment, the end of a cantilever beam 23 at the side B of the hull is aligned with the transverse stiffening component 44 at the installation platform FR29; the end of a cantilever beam 23 at the tail side A is aligned with the longitudinal stiffening component 45 at the longitudinal section line position of the installation platform 22570mm; the tail side A has a cantilever beam The end of the beam 23 is aligned with the longitudinal stiffening assembly 45 at the 25010mm longitudinal section line of the installation platform; wherein, the 22570mm longitudinal section line means that the transverse T1 distance from the line to the middle longitudinal line N is 22570mm; the 25010mm longitudinal section line means that the transverse T1 distance from the line to the middle longitudinal line N is 25010mm; similarly, the ends of the remaining cantilever beams 23 are also aligned with the stiffening assemblies on the side of the installation platform 4; this arrangement can improve the stability of the impeller platform 2 and reduce the impact of structural modification on the installation platform.

[0069] Reference Figure 1 , Figures 11 to 18 In one embodiment, (each) the cantilever beam 23 includes a web 25, a reinforcement component 26 and a bottom plate 27; a platform plate 21 and a stiffening rib 22 are provided on the top of the web 25, and the bottom plate 27 is provided at the bottom of the web 25. The reinforcement component 26 is vertically arranged on the web 25 and is located below the stiffening rib 22. The reinforcement component 26 can improve the torsional resistance of the cantilever beam 23.

[0070] Preferably, the top of the reinforcing component 26 is connected to the stiffening rib 22, and the bottom of the reinforcing component 26 is connected to the bottom plate 27. Specifically, at the set position, the lightening hole 24 is provided on the web 25, and a hole stiffener 241 is provided around the lightening hole 24. Several reinforcing components 26 are connected to the stiffening rib 22 at the top and the hole stiffener 241 at the bottom; several reinforcing components 26 are connected to the hole stiffener 241 at the top and the bottom of the hole stiffener 241 at the bottom; wherein, the hole stiffener 241 can improve the local strength of the opening section to avoid local instability of the web 25 at the opening position.

[0071] Reference Figures 11 to 18 In one embodiment, the reinforcing component 26 is one or more of a wedge-shaped rib (such as a trapezoidal rib), an "L"-shaped rib, an "I"-shaped rib, and a "T"-shaped rib.

[0072] Reference Fig.19 In one embodiment, the hub base 3 is provided with a fixing portion 31 , and the fixing portion 31 is provided with a plurality of fixing holes 311 , and the fixing holes 311 are used for temporary fixing of the fan hub 5 .

[0073] Reference Figure 1 and Figure 2 In this embodiment, when installing a large-capacity wind turbine, the wind turbine hub 5 can be temporarily fixed on the hub base 3, and then the hub 5 and the three blades 7 can be assembled. During assembly, the impeller platform 5 cantilevered out of the periphery of the main deck 41 can reasonably utilize the space at the rear side A and the space at the side B, and the crane equipment 42 and the side auxiliary crane 8 can be used together to lift and turn over the wind turbine components, and finally the blades 7 and the wind turbine hub 5 can be assembled, which solves the problem of insufficient space and interference of structures when the blades 7 need to pass through the top of the main deck 41 during assembly.

[0074] In one embodiment, the elevated base 1, the impeller platform 2 and the hub base 3 are all made of at least Q345 steel.

[0075] Another purpose of the utility model is to provide an installation platform, so that people can rationally utilize idle offshore installation platforms through platform modification structure, improve the use function and use space of the offshore installation platform, and facilitate people to efficiently install large-capacity offshore wind turbines in deep water areas.

[0076] Reference Figures 1 to 19 , an installation platform 4, including the platform modification structure, a crane device 42 and a plurality of pile legs 43; the crane device 42 is arranged on the elevated base 1; the plurality of pile legs 43 are arranged on the main body of the installation platform 4, for fixing the installation platform 4.

[0077] Reference Figure 1 and Figure 2 In one embodiment, the installation platform 4 is provided with a side auxiliary crane 8 for auxiliary use when hoisting components.

[0078] In one embodiment, the crane device 42 is a full-revolving crane or a pile-encircling crane; the crane device 42 can be used to hoist a wind turbine foundation 91 (such as a duct frame), a tower 92 (also called a tower), a wind turbine hub 5, wind turbine blades 7, and an impeller unit consisting of a "hub and blades".

[0079] In one embodiment, the main body of the mounting platform 4 is in a "convex" shape when viewed from above; a plurality of legs 43 are arranged on the main body of the mounting platform 4; in this embodiment, three legs 43 are arranged, and the three legs 43 are located at three corner points of a plane triangle shape ("△"); in another embodiment, four legs 43 are arranged.

[0080] In one embodiment, the length of the pile legs 43 is at least greater than 90 m.

[0081] In one embodiment, the installation platform 4 is provided with a self-propelled control system, and the self-propelled control system can control the installation platform 4 to move to the target sea area for operation.

[0082] The platform transformation structure of the utility model can also be applied to an installation vessel, and is not limited to being applied to an installation platform.

[0083] For other contents of the platform transformation structure and the installation platform thereof described in the present invention, please refer to the prior art and will not be described in detail here.

[0084] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Therefore, any modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A platform transformation structure, characterized in that: It includes a raised base, an impeller platform and a hub base; the raised base is arranged on the main deck of the installation platform and is used to set up the crane equipment; the impeller platform is arranged on the side of the installation platform and extends out of the installation platform; the hub base is arranged on the impeller platform and is used to fix the impeller hub.

2. The platform transformation structure according to claim 1, characterized in that: The raised base includes a first bottom section, a second bottom section and a third bottom section; the second bottom section is arranged on the first bottom section, and the third bottom section is arranged on the second bottom section; the first bottom section is arranged in the middle area of ​​the platform stern where the main deck of the installation platform is installed; the third bottom section is used for setting the crane equipment.

3. The platform transformation structure according to claim 2, characterized in that: The first bottom section is one of a square tube structure, a cylindrical structure, and a prismatic tube structure.

4. The platform transformation structure according to claim 2, characterized in that: The second bottom section is a variable cross-section transition section; the lower end of the second bottom section is connected to the upper end of the first bottom section; the upper end of the second bottom section is connected to the lower end of the third bottom section; wherein the lower end opening of the second bottom section is larger than its upper end opening.

5. The platform transformation structure according to claim 2, characterized in that: The third bottom section is a cylindrical structure.

6. The platform transformation structure according to claim 1, characterized in that: The impeller platform includes a platform plate, a plurality of stiffening ribs and a plurality of cantilever beams; a plurality of the cantilever beams are arranged on the side of the mounting platform and cantilevered outward from the mounting platform; a plurality of the stiffening ribs are arranged at the bottom of the platform plate; the platform plate and the stiffening ribs are arranged on the cantilever beams, and the platform plate is connected to the side of the mounting platform.

7. The platform transformation structure according to claim 6, characterized in that: The stiffening ribs are one or more of "L"-shaped stiffening ribs, "I"-shaped stiffening ribs, "T"-shaped stiffening ribs, and "U"-shaped stiffening ribs.

8. The platform transformation structure according to claim 6, characterized in that: The cantilever beams include a first type of cantilever beam and a second type of cantilever beam; The first type of cantilever beam comprises a first extension section and a second extension section, one end of the first extension section is connected to one end of the second extension section, and the other end of the second extension section is connected to the side of the mounting platform; wherein the first extension section is a cantilever beam section with a constant cross-sectional height, and the second extension section is a cantilever beam section with a variable cross-sectional height; The second type of cantilever beam includes a first segment, a transition segment and a second segment, one end of the first segment is connected to one end of the transition segment, the other end of the transition segment is connected to one end of the second segment, and the other end of the second segment is connected to the side of the mounting platform; wherein the first segment is a cantilever beam segment with a uniform cross-sectional height; the transition segment and the second segment are both cantilever beam segments with a variable cross-sectional height.

9. The platform transformation structure according to claim 1, characterized in that: The hub base is provided with a fixing portion, and the fixing portion is provided with a plurality of fixing holes, and the fixing holes are used for temporary fixing of the fan hub.

10. A mounting platform, characterized in that: It comprises the platform reconstruction structure as claimed in any one of claims 1 to 9, a crane device and a plurality of pile legs; the crane device is arranged on the elevated base; and the plurality of pile legs are arranged on the main body of the installation platform for fixing the installation platform.

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