Movable bailey truss for offshore wind power platform

Abstract

The utility model discloses a movable bailey truss for an offshore wind power platform, which comprises two groups of two broadside bailey truss components symmetrically arranged on a main deck, each group of bailey truss components consists of a plurality of bailey brackets, and the bailey brackets are longitudinally arranged in a straight line along a wind power platform ship and are fixedly connected with one another to form a supporting platform body with a plane top surface; each bailey bracket in each group of bailey bracket assembly is connected to the edge side of the main deck through a steering bearing mechanism; a sliding mechanism is arranged between each bailey bracket assembly and the side outer wall of the platform ship, so that the bailey bracket assemblies move in any overturning state from the state that the autonomous deck is horizontally arranged to the state that the side outer side is horizontally arranged; the movable bailey truss structure of the offshore wind power platform is convenient to assemble and disassemble, flexible to use and high in space availability, the construction safety and operation convenience of operators can be effectively improved, and the construction efficiency and construction safety of a wind power platform ship are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of auxiliary installation facilities for wind power platforms on board ships, in particular to a movable Bailey frame for offshore wind power platforms. Background Art

[0002] In the past two years, major wind turbine manufacturers have successively launched offshore wind turbines with a single unit capacity of 8MW and above. The trend towards longer blades and larger rotors is accelerating. The blade length of 8MW wind turbines and above is approximately 107m to 123m, and the blade length is approximately 1.8 times the distance between the blade fulcrums. The lateral length of mainstream wind turbine platform vessels in the market generally does not exceed 50 meters, which is not friendly to wind turbine platform vessels that generally use single-blade lifting technology. After the wind turbine blades are transferred to the platform deck, they are placed in the lateral direction of the wind turbine installation vessel. The wind turbine blades extend significantly beyond the ship's width, and the ends of the wind turbine blades are unsupported, making them prone to vertical deformation. In addition, the blades need to be at a certain height from the main deck to facilitate installation with rigging.

[0003] The main limitations of wind turbine installation are the performance of existing ship engines and the limited deck area. Currently, existing wind turbine installation vessels' engines do not meet the lifting techniques specified by wind turbine manufacturers, forcing them to select a specific lifting method based on their own engine performance. For example, the "Sanhang Fenghua" and "Ganghang Ping 7" vessels used in the Huaneng Shandong Peninsula North BW project do not meet the requirements for the rotor hoisting of Mingyang Smart's 8.5MW turbines, requiring only single-blade installation. For the single-blade lifting process, transferring the blade to the deck of the wind turbine installation ship is a key link in the construction process. The single-blade lifting requires that the horizontal length of the deck must meet the blade fulcrum length. At present, the mainstream wind power installation ships on the market are still the third-generation wind turbine installation platforms represented by "Sanhang Fenghua" and "Ganghang Ping 7". In order to meet the construction requirements, most wind power installation ships are forced to reduce construction efficiency. After transferring the blade from the transport ship to the deck of the platform ship, the blade tooling is disassembled by using a dual-machine cooperation method. This lifting method has low work efficiency and generally requires the precise cooperation of multiple people such as cranes and ground commanders to complete this process. Therefore, blade lifting cannot be performed within the short operation window period.

[0004] As offshore wind turbines continue to grow in size, blades will continue to increase in size. The lifting performance of wind turbine installation vessels cannot keep pace with the rapid evolution of offshore wind turbines. The limited deck area of ​​traditional small-capacity wind turbine installation vessels poses a construction challenge. To reduce construction costs and improve efficiency, developing highly adaptable and mobile Bailey frames for offshore wind platforms may be necessary. Utility Model Content

[0005] The utility model aims to provide a movable Bailey frame for an offshore wind power platform, which solves the problems that the existing Bailey frames of wind power platform ships occupy a large space, are not portable and affect navigation.

[0006] To this end, the technical solution of this utility model is as follows:

[0007] A movable Bailey frame for an offshore wind power platform comprises two sets of Bailey frame assemblies, which are symmetrically and movably arranged on both sides of the main deck of the wind power platform ship; each set of Bailey frame assemblies is composed of a plurality of Bailey frames, which are arranged in parallel with each other, arranged in a line along the longitudinal direction of the wind power platform ship, and connected and fixed to each other to form a support platform body with a flat top surface; each Bailey frame in each set of Bailey frame assemblies is connected to the edge side of the main deck through a steering load-bearing mechanism; the steering load-bearing mechanism is composed of a plurality of steering connectors and a plurality of upper fixing ears; the plurality of upper fixing ears are fixed at equal intervals on the edge side of the main deck between two pile guard rooms, and the plurality of steering connectors are respectively fixed on the top surfaces of the connection ends of the plurality of Bailey frames and the wind power platform ship, and are connected together. One is detachably hingedly connected to each upper fixing ear, so that the Bailey bracket assembly can be flipped 180° from a horizontal setting state on the main deck to a horizontal setting state on the outside of the ship; a sliding mechanism is provided between each Bailey bracket assembly and the outer wall of the side of the platform ship; the sliding mechanism includes a sliding track, which is a strip track with a U-shaped groove structure and is fixed to the outer wall of the side along the length direction of the platform ship; a plurality of roller mechanisms are arranged at intervals in the sliding track, and each roller mechanism is movably connected to the Bailey bracket assembly through a connecting rod mechanism, so that the Bailey bracket assembly can move in the length direction of the platform ship under the sliding cooperation of the plurality of roller mechanisms and the sliding track in any flipping state from a horizontal setting state on the main deck to a horizontal state on the outside of the ship.

[0008] Furthermore, the Bailey support is a truss beam with a vertical cross section of a right-angled trapezoid, and is arranged in a manner that the long right-angled side of the right-angled trapezoid is arranged horizontally and the short right-angled side is adjacent to the side of the platform ship.

[0009] Furthermore, in the steering load-bearing mechanism, the steering connector includes a first connecting seat, an L-shaped body and a first connecting part that are connected in sequence and formed as one piece; the first connecting seat is arranged horizontally and is fixed to the top surface of the Bailey bracket by a plurality of first bolts arranged in the circumferential direction; the L-shaped body is composed of a vertical part and a horizontal part, the bottom end of the vertical part is centrally fixed to the top surface of the first connecting seat, and the horizontal part is vertically fixed to the top end of the vertical part and is arranged toward the main deck; the connecting part is fixed to the end surface of the horizontal part of the L-shaped body, and includes two parallel and symmetrical connecting ear plates, both of which are provided with a first pin hole that intersects with each other; the upper fixing ear includes a second connecting seat and a second connecting part that are connected in sequence and formed as one piece; the second connecting seat is arranged horizontally and is fixed to the main deck by a plurality of second bolts arranged in the circumferential direction; the second connecting part is a connecting ear plate vertically fixed to the second connecting seat, and a second pin hole is provided on it, so that the connecting ear plate of the second connecting part is inserted between the two connecting ear plates of the first connecting part, and the upper fixing ear is hingedly connected to the steering connector through a pin shaft passing through the first pin hole and the second pin hole.

[0010] Furthermore, a locking mechanism is provided between each Bailey bracket assembly and the outer wall of the ship's side; the locking mechanism includes a plurality of lower fixing ears fixed on the outer wall of the ship's side and a plurality of lower connecting ears fixed on the Bailey bracket assembly; the plurality of lower connecting ears are evenly fixed on the end side bottoms of the plurality of Bailey brackets and are respectively located below the plurality of steering connectors; the plurality of lower fixing ears are fixed on the outer wall of the ship's side at intervals and correspond one-to-one to the plurality of lower connecting ears respectively; the lower fixing ears and the lower connecting ears are both connecting ear plates with pin holes, so that when the Bailey bracket assembly is flipped to a horizontal state on the outer side of the ship, they are connected and fixed by arranging bolts and nuts in the pin holes that penetrate the two.

[0011] Furthermore, the length of the sliding track is adapted to the moving length of the Bailey bracket assembly in the length direction of the platform ship, so that the sliding track can be moved from the setting position of the upper fixing ear to the side of a pile guard chamber.

[0012] Furthermore, the roller mechanism includes a wheel frame, a roller and a fixing frame; the roller is rotatably arranged at the bottom end of the wheel frame, and the fixing frame is vertically fixed on the top surface of the wheel frame for connecting the connecting rod mechanism.

[0013] Furthermore, the connecting rod mechanism includes an upper connecting frame, a first rod body, a second rod body, a third rod body, a fourth rod body and a lower connecting frame; wherein the upper connecting frame and the lower connecting frame are both U-shaped frames, and when the Bailey bracket assembly is horizontally arranged on the main deck, the upper connecting frame is fixed to the Bailey bracket with the opening facing upward, and is arranged opposite to the steering connector provided on the Bailey bracket; the lower connecting frame is arranged below the upper connecting frame, and is fixed to the outer plate surface of the fixing frame with the opening facing outward; the first rod body is a broken line rod with an obtuse angle, and is arranged at an obtuse angle toward the direction of the platform ship; the The upper end of one rod body is hingedly connected to the end of the upper connecting frame away from the platform ship, and the lower end thereof is hingedly connected to the lower end of the second rod body; the second rod body is also a broken line rod with an obtuse angle, and is arranged in the direction facing outward at an obtuse angle, and the upper end of the second rod body is hingedly connected to the upper side end of the lower connecting frame; the third rod body is an inverted L-shaped rod, the upper end of which is hingedly connected to the end of the upper connecting frame close to the platform ship, and the lower end thereof is hingedly connected to the lower end of the fourth rod body; the fourth rod body is a short straight rod, the upper end of which is hingedly connected to the lower side end of the lower connecting frame; the second rod body is hingedly connected to the rod body of the third rod body at the angle.

[0014] Compared with the existing technology, the movable Bailey frame for offshore wind power platforms can effectively solve the problems of existing wind power platform ship Bailey frames taking up large space, being non-portable and affecting navigation. It provides a mobile Bailey frame structure for offshore wind power platforms that is convenient for loading and unloading, flexible in use, and has strong space utilization. It is suitable for the Bailey frame setting requirements under different conditions of wind power platform ships, and can effectively improve the construction safety and operational convenience of operators, thereby ensuring the construction efficiency and construction safety of wind power platform ships. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a top view of the movable Bailey frame for an offshore wind power platform of the present invention in a shelved state;

[0016] Figure 2 This is a front view of the movable Bailey frame for an offshore wind power platform of the present invention in an open state;

[0017] Figure 3 This is a single-side front view of the movable Bailey frame for an offshore wind power platform of the present invention in an open state;

[0018] Figure 4 This is a side view of the movable Bailey frame for an offshore wind power platform of the present invention in a stowed state;

[0019] Figure 5 This is a structural schematic diagram of the steering load-bearing mechanism of the movable Bailey frame for an offshore wind power platform of the present invention in a connected state;

[0020] Figure 6This is a schematic structural diagram of the roller mechanism of the movable Bailey frame for an offshore wind power platform of the present invention;

[0021] FIG7( a ) is a schematic diagram of the connecting rod mechanism of the movable Bailey frame for an offshore wind power platform of the present invention when the Bailey support assembly is horizontally arranged on the main deck;

[0022] FIG7( b ) is a schematic diagram of the state of the connecting rod mechanism of the movable Bailey frame for offshore wind power platform of the present invention when the Bailey support assembly is horizontally arranged on the outside of the ship's side. DETAILED DESCRIPTION

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. However, the following embodiments are by no means intended to limit the present invention in any way.

[0024] See also Figure 1 The movable Bailey frame for the offshore wind turbine platform is installed on the wind turbine platform vessel. Four bollard chambers 2 are arranged on the main deck 1 of the wind turbine platform vessel, along with a crane. A small winch 8 is also installed at each end of the main deck 1. Specifically, the movable Bailey frame for the offshore wind turbine platform comprises two sets of Bailey frame assemblies 3, which are symmetrically and movably arranged on the port side 1a and starboard side 1b of the main deck 1 of the wind turbine platform vessel, and are initially positioned between the two bollard chambers 2 on each side.

[0025] See also Figure 2 and Figure 3 Each group of Bailey bracket assemblies 3 is composed of 33 Bailey brackets 301, which are arranged parallel to each other and arranged in a line along the length direction of the wind turbine platform ship. Every two adjacent Bailey brackets 301 are welded and fixedly connected, so that the 33 Bailey brackets 301 form a support platform body with a flat top surface.

[0026] In this embodiment, in order to make the Bailey frame assembly 3 have better structural strength, the Bailey support 301 is a truss beam with a vertical cross-section of a right-angled trapezoid; wherein, the long right-angled side of the right-angled trapezoid is arranged horizontally to form a planar top surface of the Bailey frame assembly 3; the short right-angled side of the right-angled trapezoid is arranged adjacent to the side of the platform ship for connection with the wind power platform ship, and serves as the load-bearing end of the Bailey frame assembly 3 supported on the side wall of the wind power platform ship, so that the Bailey frame assembly 3 has better structural strength.

[0027] See also Figure 3 and Figure 4Each Bailey support 301 in each Bailey support assembly 3 is connected to the edge of the main deck 1 through a steering load-bearing mechanism; wherein the steering load-bearing mechanism is composed of 33 steering connectors 4 and 33 upper fixing ears 9; wherein the 33 upper fixing ears 9 are fixed in an evenly spaced manner and centrally on the edge of the main deck located between the two pile guard chambers 2 on one side of the wind turbine platform ship, and the 33 steering connectors 4 are respectively fixed centrally on the top surface of the connection end of the 33 Bailey supports 301 and the wind turbine platform ship, so that the Bailey support assembly 3 is rotatably connected to the main deck 1 of the wind turbine platform ship by hingedly connecting the 33 steering connectors 4 to the 33 upper fixing ears 9; furthermore, the Bailey support assembly 3 is in different setting states according to different application states, including: 1) a placement state of being horizontally placed on the main deck 1, 2) an open state flipped to the outside of the ship, and 3) a vertical storage state flipped.

[0028] See also Figure 5 In this embodiment, the steering connector 4 includes a first connecting seat 402, an L-shaped body 401 and a first connecting portion 403 that are connected in sequence and formed as one piece; the first connecting seat 402 is arranged horizontally and is fixed to the top surface of the Bailey bracket by multiple first bolts 404 arranged along the circumferential direction; the L-shaped body 401 is composed of a vertical portion and a horizontal portion, the bottom end of the vertical portion is centrally fixed on the top surface of the first connecting seat 402, and the horizontal portion is vertically fixed to the top end of the vertical portion and is arranged toward the main deck 1; the connecting portion 403 is fixed on the end surface of the horizontal portion of the L-shaped body 401, and includes two parallel and symmetrical connecting ear plates, each of which is provided with a first pin hole that penetrates each other.

[0029] See also Figure 5 In this embodiment, the upper fixing ear 9 includes a second connecting seat 901 and a second connecting portion 902 that are connected in sequence and integrally formed; the second connecting seat 901 is arranged horizontally and is fixed to the main deck 1 by a plurality of second bolts 903 arranged along the circumferential direction; the second connecting portion 902 is a connecting ear plate vertically fixed to the second connecting seat 901, and a second pin hole is opened on it, so that the connecting ear plate of the second connecting portion 902 can be inserted between the two connecting ear plates of the first connecting portion 403, and the upper fixing ear 9 is hingedly connected to the steering connector 4 by a pin shaft passing through the first pin hole and the second pin hole.

[0030] As a preferred technical solution of this embodiment, see Figure 2To prevent the Bailey bracket assemblies 3 from tilting up and down due to sea waves when the two Bailey bracket assemblies 3 are flipped outward to the port side 1a and the starboard side 1b, respectively, a locking mechanism is provided between each Bailey bracket assembly 3 and the ship's outer wall. Specifically, the locking mechanism includes three lower fixing ears fixed to the ship's outer wall and three lower connecting ears fixed to the Bailey bracket assembly 3. The three lower connecting ears are respectively fixed to the bottom ends of the Bailey bracket 301 located at the end sides and the middle position of the Bailey bracket assembly 3 and are located below the steering connector 4. The three lower fixing ears are fixed to the ship's outer wall at intervals and correspond to the three lower connecting ears respectively. The lower fixing ears and the lower connecting ears both use connecting ear plates with pin holes. When the Bailey bracket assembly 3 is in the open state, the pin holes of the two are connected. In actual application, bolts and nuts are provided in each adjacent lower fixing ear and lower connecting ear to stably fix the Bailey bracket assembly 3 to the ship's outer wall.

[0031] See also Figure 3 and Figure 4 A sliding mechanism is also provided on each Bailey support assembly 3 and the outer wall of the side of the platform ship; the sliding mechanism includes a sliding track 5, three roller mechanisms 6 and three connecting rod mechanisms 7; wherein,

[0032] The sliding track 5 is a strip track with a U-shaped groove structure, which is fixed to the outer wall of the side along the length of the platform ship. The length of the sliding track 5 is adapted to the moving length of the Bailey bracket assembly 3 in the length direction of the platform ship. Specifically, one side of the sliding track 5 is located below the steering connector 4 and the other side is located below any bollard chamber 2, so that the Bailey bracket assembly 3 can be moved from the steering connector 4 to the side of the bollard chamber 2 for vertical fixation.

[0033] See also Figure 6 The roller mechanism 6 includes a wheel frame 601, a roller 602 and a fixing frame 603; the roller 602 is rotatably connected to the bottom end of the wheel frame 601, and the fixing frame 603 is vertically fixed to the top surface of the wheel frame 601; the three roller mechanisms 6 are arranged at intervals in the sliding track 5, and the two ends of the sliding track 5 are closed with baffles to prevent the roller mechanisms 6 from slipping to the outside of the track; the groove depth of the sliding track 5 is adapted to the size of the roller 602, so that the roller 602 can stably roll back and forth in the sliding track 5 along the length direction of the platform ship to avoid slipping.

[0034] The three connecting rod mechanisms 7 are arranged at intervals on the Bailey bracket assembly 3 to movably connect the three roller mechanisms 6 to the Bailey bracket assembly 3; referring to Figures 7(a) and 7(b), the connecting rod mechanism 7 includes an upper connecting frame 701, a first rod body 702, a second rod body 703, a third rod body 704, a fourth rod body 705 and a lower connecting frame 706; wherein, the upper connecting frame 701 and the lower connecting frame 706 are both U-shaped frames, the upper connecting frame 701 is fixed to the Bailey bracket 301 with its opening facing downward, and is arranged opposite to the steering connector 4 provided on the Bailey bracket 301; the lower connecting frame 706 is arranged below the upper connecting frame 701 and is fixed to the outer plate surface of the fixing frame 603 with its opening facing outward; the first rod body 702 is a rod with an obtuse angle The first rod 702 is hinged at its upper end to the upper connecting frame 701 away from the platform ship, and its lower end is hinged at the lower end of the second rod 703; the second rod 703 is also a hinged rod with an obtuse angle and is set at an obtuse angle facing outward, and the upper end of the second rod 703 is hinged at the upper side end of the lower connecting frame 706; the third rod 704 is an inverted L-shaped rod, the upper end of which is hinged at one end of the upper connecting frame 701 close to the platform ship, and the lower end is hinged at the lower end of the fourth rod 705; the fourth rod 705 is a short straight rod, the upper end of which is hinged at the lower side end of the lower connecting frame 706; the second rod 703 is hinged at the angle to the rod body of the third rod 704.

[0035] In actual application, the Bailey bracket assembly 3 can be flipped to the main deck 1 of the platform ship for placement and transfer through three connecting rod mechanisms 7, and can also be flipped 180° outward to an open state, and can also be flipped 90 degrees to the side of the ship from the open state to a stored state; at the same time, since the Bailey bracket assembly 3 is connected to the three roller mechanisms 6 through three connecting rod mechanisms 7, under the action of external traction, the Bailey bracket assembly 3 can also be moved to the side of the pile guard chamber 2 with the cooperation of the roller mechanism 6 and the sliding track 5, and then the Bailey bracket assembly 3 in the stored state can be fixed to the outer wall of the pile guard chamber 2 by tying with a cable tie or setting a fixed connecting piece.

[0036] See also Figure 1 The specific application method of the movable Bailey frame for the offshore wind power platform is described as follows:

[0037] (1) When sailing to a new wind farm, the offshore wind power platform shall be placed in a movable Bailey frame:

[0038] According to the "Technical Requirements for Offshore Platform Towing," to ensure safety during towing, non-self-propelled wind turbine platform vessels must remove outboard equipment, place it on the deck, and secure it with lashings before towing. Therefore, before towing, the platform vessel's own crane is used to rotate the Bailey bracket assemblies 3 located on both sides of the main deck 1 180 degrees toward the main deck 1 via 33 steering load-bearing mechanisms, placing them horizontally on the platform vessel's main deck 1. The Bailey bracket assemblies 3 are then secured to the main deck 1 with rolling straps.

[0039] (2) When implementing the single blade hoisting process, the movable Bailey frame of the offshore wind power platform is in the open state:

[0040] The lashings between the Bailey bracket assembly 3 and the main deck 1 are released, and the Bailey bracket assembly 3, which is horizontally arranged on both sides of the main deck 1, is rotated outward by 180 degrees through 33 steering load-bearing mechanisms so that it is horizontally arranged on the outside of the ship's side. The Bailey bracket assembly 3 is fixed to the corresponding ship's outer wall through a locking mechanism. Since the ship needs to be moved in a wind farm under good sea conditions, the ship can also be kept in this working state during the movement.

[0041] (3) When implementing the impeller hoisting process, the offshore wind power platform uses a movable Bailey frame in the storage state:

[0042] Due to the limited available area on the main deck of the wind turbine platform vessel, if the impeller is placed in the form of a single-blade lifting process and the Bailey frame is stored during towing, interference problems will inevitably occur during the impeller assembly process. Based on this, when assembling the impeller, the hinged connection between the steering connector 4 and the upper fixing ear 9 in the 33 steering load-bearing mechanisms is released, and then the Bailey bracket assembly 3 is connected to the small winch 8 on the platform vessel 1 through a pull rope. With the cooperation of the sliding track 5 and the roller mechanism 6, the Bailey bracket assembly 3 is slid and pulled to the adjacent side of the pile guard chamber 2 on one side; then, the Bailey bracket assembly 3 is lifted to a vertical setting state using the platform vessel's own crane and aligned with the outer wall of the pile guard chamber 2; the Bailey bracket assembly 3 is connected to the fixed support point on the pile guard chamber 2 through a connector, and then fixed in position using a rolling belt.

Claims

1. A movable Bailey frame for an offshore wind power platform, characterized in that: The invention comprises two groups of Bailey support assemblies (3), which are symmetrically and movably arranged on both sides of the main deck (1) of a wind power platform ship; each group of Bailey support assemblies (3) is composed of a plurality of Bailey supports (301), which are arranged in parallel with each other, arranged in a line along the longitudinal direction of the wind power platform ship, and connected and fixed to each other to form a support platform body with a flat top surface; each Bailey support (301) in each group of Bailey support assemblies (3) is connected to the edge side of the main deck (1) through a steering load-bearing mechanism; the steering load-bearing mechanism is composed of a plurality of steering connectors (4) and a plurality of upper fixing ears (9); the plurality of upper fixing ears (9) are fixed at equal intervals on the edge side of the main deck between two pile guard chambers (2); the plurality of steering connectors (4) are respectively fixed on the top surface of the connection end of the plurality of Bailey supports (301) and the wind power platform ship, and are connected one by one to each upper fixing ear. (9) The Bailey bracket assembly (3) is detachably hinged so that it can be turned 180 degrees from a horizontal state on the main deck (1) to a horizontal state on the outer side of the ship; a sliding mechanism is provided between each Bailey bracket assembly (3) and the outer side wall of the platform ship; the sliding mechanism includes a sliding track (5), which is a strip track with a U-shaped groove structure and is fixed on the outer side wall along the length direction of the platform ship; a plurality of roller mechanisms (6) are arranged at intervals in the sliding track (5), and each roller mechanism (6) is movably connected to the Bailey bracket assembly (3) through a connecting rod mechanism (7), so that the Bailey bracket assembly (3) can move in the length direction of the platform ship under the sliding cooperation of the plurality of roller mechanisms (6) and the sliding track (5) in any turning state from a horizontal setting state on the main deck (1) to a horizontal state on the outer side of the ship.

2. The movable Bailey frame for offshore wind power platform according to claim 1, characterized in that: The Bailey support (301) is a truss beam with a vertical cross section of a right-angled trapezoid, and is arranged in a manner that the long right-angled side of the right-angled trapezoid is horizontally arranged and the short right-angled side is adjacent to the side of the platform ship.

3. The movable Bailey frame for offshore wind power platform according to claim 1, characterized in that: In the steering load-bearing mechanism, the steering connector (4) comprises a first connecting seat (402), an L-shaped body (401) and a first connecting portion (403) which are sequentially connected and integrally formed; the first connecting seat (402) is arranged horizontally and is fixed to the top surface of the Bailey bracket (301) by a plurality of first bolts (404) arranged along the circumferential direction; the L-shaped body (401) is composed of a vertical portion and a horizontal portion, the bottom end of the vertical portion is centrally fixed to the top surface of the first connecting seat (402), and the horizontal portion is vertically fixed to the top end of the vertical portion and is arranged in the direction of the main deck (1); the first connecting portion (403) is fixed to the end surface of the horizontal portion of the L-shaped body (401), and comprises two parallel and symmetrically arranged connecting ears. The upper fixing ear (9) comprises a second connecting seat (901) and a second connecting portion (902) which are connected in sequence and formed integrally; the second connecting seat (901) is arranged horizontally and is fixed to the main deck (1) by a plurality of second bolts (903) arranged along the circumferential direction; the second connecting portion (902) is a connecting ear plate vertically fixed to the second connecting seat (901), and a second pin hole is opened on it, so that the connecting ear plate of the second connecting portion (902) is inserted between the two connecting ear plates of the first connecting portion (403), and the upper fixing ear (9) is hingedly connected to the steering connector (4) by a pin shaft passing through the first pin hole and the second pin hole.

4. The movable Bailey frame for offshore wind power platform according to claim 1, characterized in that: A locking mechanism is provided between each Bailey bracket assembly (3) and the outer wall of the ship's side; the locking mechanism comprises a plurality of lower fixing ears fixed on the outer wall of the ship's side and a plurality of lower connecting ears fixed on the Bailey bracket assembly (3); the plurality of lower connecting ears are evenly distributed and fixed on the end bottoms of the plurality of Bailey brackets (301), and are respectively located below the plurality of steering connectors (4); the plurality of lower fixing ears are fixed on the outer wall of the ship's side at intervals, and correspond one-to-one to the plurality of lower connecting ears respectively; the lower fixing ears and the lower connecting ears are both connecting ear plates with pin holes, so that when the Bailey bracket assembly (3) is flipped to a horizontal state on the outer side of the ship, they are connected and fixed by arranging bolts and nuts in the pin holes that intersect the two.

5. The movable Bailey frame for offshore wind power platform according to claim 1, characterized in that: The length of the sliding track (5) is adapted to the moving length of the Bailey bracket assembly (3) in the length direction of the platform ship, so that the sliding track (5) can be moved from the setting position of the upper fixing ear (9) to the side of a pile guard chamber (2).

6. The movable Bailey frame for offshore wind power platform according to claim 1, characterized in that: The roller mechanism (6) comprises a wheel frame (601), a roller (602) and a fixing frame (603); the roller (602) is rotatably arranged at the bottom end of the wheel frame (601), and the fixing frame (603) is vertically fixed on the top surface of the wheel frame (601) for connecting the connecting rod mechanism (7).

7. The movable Bailey frame for an offshore wind power platform according to claim 1, characterized in that: The connecting rod mechanism (7) comprises an upper connecting frame (701), a first rod body (702), a second rod body (703), a third rod body (704), a fourth rod body (705) and a lower connecting frame (706); wherein the upper connecting frame (701) and the lower connecting frame (706) are both U-shaped frames; when the Bailey bracket assembly (3) is horizontally arranged on the main deck (1), the upper connecting frame (701) is fixed to the Bailey bracket (301) with its opening facing upwards, and is arranged opposite to the steering connector (4) arranged on the Bailey bracket (301); the lower connecting frame (706) is arranged below the upper connecting frame (701) and is fixed to the outer plate surface of the fixing frame (603) with its opening facing outwards; the first rod body (702) is a broken line rod with an obtuse angle, and is bent at an obtuse angle towards the platform. The upper end of the first rod (702) is hingedly connected to the end of the upper connecting frame (701) away from the platform ship, and the lower end is hingedly connected to the lower end of the second rod (703); the second rod (703) is also a broken line rod with an obtuse angle and is arranged in the direction facing outward at an obtuse angle, and the upper end of the second rod (703) is hingedly connected to the upper side end of the lower connecting frame (706); the third rod (704) is an inverted L-shaped rod, the upper end of which is hingedly connected to the end of the upper connecting frame (701) close to the platform ship, and the lower end is hingedly connected to the lower end of the fourth rod (705); the fourth rod (705) is a short straight rod, the upper end of which is hingedly connected to the lower side end of the lower connecting frame (706); the second rod (703) is hingedly connected to the rod body of the third rod (704) at the angle.

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