Offshore wind turbine installation and cable installation device

Abstract

This invention discloses an offshore wind turbine installation and cable laying device, relating to the technical field of wind turbine installation. The invention comprises an installation component and a hoisting component mounted on the deck of a vessel. The installation component is used to install the wind turbine tower and cable tray, while the hoisting component is used to hoist and position the wind turbine tower and cable tray to the installation component. A conveying component assists the hoisting component in transporting the wind turbine tower and cable tray to the installation component. The installation component is positioned at the mid-rear end of the vessel deck. By positioning the installation component at the mid-rear end of the vessel deck, the loads during tower clamping, rotation, and installation are preferentially transferred to the longitudinal center of the hull, reducing the risk of heeling caused by eccentric loading. This centrally located layout, combined with the working area at the stern of the hull, helps reduce reliance on the leg-assisted stabilization system, improving the applicability and operational flexibility of the device in nearshore environments.

Description

Technical Field

[0001] This invention relates to the technical field of wind turbine installation, and in particular to a device for installing offshore wind turbines and laying cables. Background Technology

[0002] Offshore wind turbines are the core equipment of offshore wind farms. Their structure typically consists of several core components, including foundation piles, transition sections, towers, nacelles, and rotors. To improve power generation efficiency and reduce the operation and maintenance cost per kilowatt-hour, offshore wind turbines are rapidly developing towards larger and heavier models. Currently, the single-unit capacity of mainstream units has significantly increased, and their overall weight and size have increased substantially. This places extremely high demands on offshore transportation and installation operations. At present, the installation of offshore wind turbines is highly dependent on large offshore installation vessels. Due to the harsh marine environment and complex wind, wave, and current conditions, traditional land-based hoisting equipment cannot be directly applied at sea. Therefore, it is necessary to use specialized installation vessels to transport the massive wind turbine components to the designated sea area and complete precise hoisting and docking operations on the dynamic sea surface. Among the existing installation technologies, self-elevating installation vessels are one of the most widely used vessel types. These vessels can lower their bottom legs into the seabed in the operating area and completely raise the hull above the water, thus forming a relatively stable static working platform to resist the interference of waves on the hoisting operation.

[0003] However, existing offshore wind turbine installation vessels have many technical limitations and shortcomings in practical applications. First, most existing installation vessels are not originally designed based on the specific stress conditions of wind turbine installation, but are modified from ordinary cargo ships or barges. This modification method results in a limited hull structure layout, making it impossible to achieve the optimal center of gravity configuration. Second, large cranes and installation equipment can usually only be rigidly fixed to one side of the hull. This unilateral offset layout is very likely to cause severe lateral tilting of the hull when unloaded or fully loaded, posing a great safety hazard.

[0004] To overcome the balance problem caused by the aforementioned unilateral offset, existing conversion and installation vessels must forcibly activate the lifting leg system before lifting heavy wind turbine components, inserting it into the seabed and lifting the hull. The hull's balance is forcibly maintained by the rigid support of the seabed. This operation mode, which relies excessively on the lifting leg, has brought significant negative effects. On the one hand, the addition of the legs and lifting mechanism makes the hydraulic and mechanical transmission system of the entire vessel exceptionally large and complex, which not only greatly increases the construction cost and daily maintenance difficulty of the vessel, but also easily leads to uneven stress on the legs or even jamming due to uneven seabed geological conditions. On the other hand, the complete operation cycle of "lowering-inserting-lifting-pulling-retrieving" the legs is extremely time-consuming, severely compressing the limited marine weather window.

[0005] Publication No. CN117049397A discloses a highly safe lifting device for installing offshore wind turbines, including a wind turbine installation vessel. A tower crane is located at the forward end of the upper deck, and a fixing mechanism is located at the lower end of the tower crane. A fixing pile is located at the forward end of the installation channel, and a pile driver is located on one side of the fixing pile at the upper end of the deck. In this technology, the pile driver is a fixed structure and is positioned facing one side of the hull, still exhibiting an off-center load effect. It requires the use of a tower crane to lift and install the wind turbine components, making it difficult to control the off-center load. Summary of the Invention

[0006] To address the problem of traditional installation vessels easily capsizing due to off-center gravity and to reduce the structural complexity of the installation vessel, this invention provides a near-shore wind turbine installation and cable laying device.

[0007] The present invention provides an offshore wind turbine installation and cable laying device, which adopts the following technical solution: An offshore wind turbine installation and cable laying device includes an installation component and a hoisting component. The installation component and hoisting component are installed on the deck of a ship. The installation component is used to install the wind turbine tower and cable rack. The hoisting component is used to hoist the wind turbine tower and cable rack and position them at the installation component. A conveying component is provided on one side of the installation component. The conveying component is used to cooperate with the hoisting component to transport the wind turbine tower and cable rack to the installation component. The installation component is located at the middle of the rear end of the ship's deck. The installation component includes a slewing rod. The slewing rod rotates between the wind turbine tower and cable rack clamping position and the installation position. The hoisting component includes a crane. The conveying component includes a conveying bracket. The crane pulls the wind turbine tower and cable rack on the conveying bracket through steel cables and slides them to the wind turbine tower and cable rack clamping position.

[0008] Positioning the installation components at the center of the aft deck of the ship creates a symmetrical, centrally located layout. This allows the gravity load of the tower during clamping and installation to be evenly and directly transferred to the vicinity of the ship's longitudinal midsection, fundamentally eliminating the severe risk of heeling caused by eccentric loading. The improved stress state significantly reduces the reliance on the lifting legs during operation, and even enables floating operation without legs when sea conditions are suitable. This directly overcomes the technical shortcomings of existing leg systems, such as complex structures, time-consuming lifting and lowering, and limitations imposed by seabed geological conditions. By coordinating with a conveyor component equipped with a conveyor support on one side of the installation components, in actual operation, the crane only needs to provide traction force, pulling the wind turbine tower and cable frame via steel cables on the conveyor support. Physical sliding on the scaffolding transfers the tower's weight support point from the high-altitude slings to the transfer support on the deck, effectively suppressing the tower's swaying in the air caused by sea waves. This not only significantly improves the safety and stability of the transport process but also reduces the ship's requirements for the crane's anti-overturning capability. The slewing rod provides a stable fixed reference for the tower, eliminating displacement errors in the suspended state, improving the docking accuracy between the tower and the foundation piles, and reducing the difficulty and risk of manual alignment adjustments at high altitudes. The core tower installation components are concentrated in the middle of the stern of the ship, forming an independent and efficient stern installation work area. The reasonable spatial zoning avoids excessive occupation of the deck by a single large piece of equipment, allowing the front and middle sections of the ship to be fully freed up.

[0009] Furthermore, the slewing rod is rotatably mounted on the mounting tower base, which supports the slewing rod and controls its rotation along the vertical axis. A protective plate and a clamping arm are swayingly mounted on the slewing rod. The protective plate and the clamping arm are swayingly arranged on both sides of the slewing rod and are respectively arranged to embrace each other. The clamping arms are spaced apart at the upper and lower ends of the protective plate and at the middle gap.

[0010] The tower base support is installed and the slewing rod is controlled to rotate along the vertical axis. This matches the horizontal transport trajectory of the tower sliding on the deck, pulled by the steel cable. The rotation of the vertical axis ensures that the clamped tower is always kept in a low center of gravity position close to the deck for horizontal yaw rotation. This allows the tower axis to be smoothly and accurately twisted to a completely coaxial alignment with the offshore foundation piles after sliding into place. At the same time, it matches the notch opened in the hull for installation, facilitating the hull's departure after installation and avoiding interference between the installed tower and the ship. The protective plate and clamping arms are respectively swayed on both sides of the slewing rod and embrace each other, forming a dynamic and adaptive clamping unit. The protective plate acts as an outer barrier, and the clamping arms act as an inner gripper, providing core locking force and avoiding secondary damage to the wind turbine components from collisions.

[0011] Furthermore, the rotary rod is divided into two sections near the bottom and folded and swayed at the division point. The rotary rod is connected by a hinge on one side of the division point and installed by bolts on the other side. A swing hydraulic cylinder is provided on the swinging and folding side of the rotary rod.

[0012] The slewing boom is divided into two sections near the bottom and equipped with a folding swing mechanism. In non-working states or during the initial stages of workstation transitions, the bottom folding lowers the center of gravity during ship movement, preventing wind loads from acting on the slewing boom and thus reducing the ship's overturning force. The hinge provides a defined and stable folding swing rotation center for the two sections, while the bolts act as rigid switches for state switching. Under high-load operating conditions while clamping the tower, the bolts tighten, locking the two sections into a rigid unit. When folding is needed to avoid obstacles, releasing the bolts restores the swing freedom. A swing hydraulic cylinder is installed on the folding side. The hydraulic system not only provides sufficient and stable driving torque but also provides hydraulic pressure support when fully extended, shortening the auxiliary time for equipment state transitions and thus improving the overall operational efficiency of the entire installation device.

[0013] Furthermore, the slewing rod is connected and installed to the mounting tower base via a slewing bearing. A slewing frame is provided at the bottom of the slewing rod, and a slewing track is provided on the mounting tower base. The slewing frame is mounted on the slewing track via wheels and supports the slewing rod to swing and rotate along the slewing track. The slewing frame and the mounting tower base transmit rotation through a slewing gear, and the slewing gear is connected to a slewing motor.

[0014] A slewing bearing is installed near the upper stress point as the main hinge point, bearing the main radial positioning and part of the axial pull-out force. At the same time, a slewing frame is set at the bottom, with wheels pressing on the slewing track to form a distal support, which amplifies the anti-overturning force arm at the bottom of the structure and effectively suppresses the downward deflection of the top of the slewing rod under heavy load conditions. This ensures the safety and attitude accuracy of the tower clamping and rotation process. The rolling friction between the wheels and the track reduces the resistance coefficient during slewing start-up and operation, and reduces mechanical wear. The gear meshing can convert the high torque output of the motor into the slewing thrust of the slewing frame without attenuation and with precision, ensuring that the slewing rod can start and stop smoothly at a low linear speed under load, and achieving precise alignment when hoisting and docking wind turbine components.

[0015] Furthermore, the protective plate is oscillatingly mounted on the rotating rod via a folding hinge. A folding control rod is connected and installed on one side of the folding hinge. The folding control rod controls the oscillation of the folding hinge and the protective plate by extension and retraction. A swing rod is connected and installed on one side of the clamping arm. The swing rod controls the oscillation of the clamping arm by extension and retraction. Clamping rollers are installed at intervals on the clamping arm.

[0016] By extending and retracting the folding control lever, the protective plate is directly driven to swing and unfold around the folding hinge, forming an effective physical windbreak and protective barrier on the working side, providing micro-environmental protection for construction. The swing control avoids spatial interference caused by fixed baffles, greatly improving the safety and continuity of the operation. Rotating clamping rollers are set on the clamping arm, reducing the hard scraping of the clamping components on the tower surface. When the tower is initially aligned and inserted, the rotational characteristics of the rollers can also play a good guiding role, avoiding rigid jamming collision between the tower edge and the clamping arm.

[0017] Furthermore, a hoisting rope is installed on the slewing rod, a top pulley is installed on the top of the slewing rod, the hoisting rope is wound around the top pulley and connected to the hoisting winch, and a hoisting connecting block is bolted to the end of the hoisting rope.

[0018] The hoisting rope is directly driven by the hoisting winch and, after being guided by the top pulley, acts on the hoisting connecting block, forming a clear and continuous force transmission path. The top pulley limits the rope's trajectory, effectively preventing swaying, friction, or jumping during the lifting process. This ensures that the hoisting force is always output stably along the predetermined path, reducing the risk of swaying during hoisting. The hoisting connecting block is attached to the end of the hoisting rope, allowing for quick connection according to the different lifting point configurations of the components being hoisted. This effectively improves the stability of the lifting point connection. Combined with the precise control of the hoisting winch over the rope winding and unwinding process, it enables fine-tuning of the lifting height and descent position of heavy components, meeting the requirements for slow lifting, slow stopping, precise alignment, and safe placement of components during offshore wind power installation.

[0019] Furthermore, the crane includes a lifting arm, which is mounted on a slewing platform and rotates along a vertical axis. A lifting cable is wound around the lifting arm, with one end of the lifting cable being bolted to a lifting connecting block and the other end being wound around a lifting winch. The lifting connecting block is used to connect the top of the wind turbine tower and the cable rack.

[0020] The lifting boom can pitch and swing relative to the slewing platform, and can also rotate around the vertical axis using the slewing platform. This gives the crane both vertical and circumferential adjustment capabilities, allowing for flexible adjustment of the lifting angle and working radius based on the actual installation orientation of the offshore wind turbine tower and cable rack. This effectively expands the lifting operation coverage. By coordinating the pitch adjustment of the lifting boom with the horizontal rotation of the slewing platform, the spatial position of the lifting connecting blocks can be adjusted, ensuring that the lifted tower top components approach the installation position along a predetermined trajectory, reducing lateral deviation, and thus improving the attitude controllability and placement accuracy during the lifting process. By setting lifting connecting blocks at the ends of the lifting cables, the risk of detachment, tilting, or uneven force during the lifting process can be effectively reduced.

[0021] Furthermore, a cable track is installed on the top of the conveyor support, and an installation cable is slidably installed on the cable track. The installation cable is used to support the wind turbine tower and cable frame and slide to one side along the cable track. A positioning flap is installed on one side of the cable track. The positioning flap is used to position the sliding position of the bottom end of the wind turbine tower and cable frame and to assist in supporting the wind turbine tower and cable frame to swing and stand upright.

[0022] The wind turbine tower and cable tray lie flat on the installation cable, guided by the cable track. This effectively limits the lateral displacement and torsion of the tower during movement, preventing interference or collisions with surrounding equipment. This allows long towers to be transferred compactly and orderly to their designated installation positions within the confined deck space of an offshore platform, improving safety and efficiency in the initial preparation phase. A positioning flap is installed on one side of the cable track. When the installation cable supports the tower to the designated position, the positioning flap physically blocks the bottom of the tower, achieving precise end-stroke limit. This ensures the tower is in an absolutely accurate and safe initial position before proceeding to the next erection stage. After the bottom of the tower is precisely limited by the positioning flap, it transforms into a bottom support hinge point during erection. Combined with cranes and other lifting equipment, the top of the tower is lifted, allowing the bottom to be supported. The positioning flip plate allows for controlled swinging and flipping, smoothly transitioning from a horizontal to a vertical position. It integrates the horizontal transport track with the flipping and lifting support point, eliminating the cumbersome auxiliary procedures of traditional hoisting, such as switching lifting points and adjusting turning rigging. This achieves streamlined, integrated installation, significantly reducing the difficulty and risk of high-altitude operations at sea. During the swinging and erection process relying on the positioning flip plate, the weight of the tower's base is directly borne by the positioning flip plate. The hoisting equipment only needs to overcome part of the tower's gravity and flipping torque. Compared to unsupported, suspended overall flipping, this significantly reduces the instantaneous load on the hoisting mechanism. The basic support provided by the track and flip plate makes the center of gravity transfer of the tower more stable and controllable during the flipping process, reducing structural swaying or localized stress concentration caused by sudden changes in force during tower flipping and lifting, effectively protecting the surface anti-corrosion layer and the overall structural integrity of the tower.

[0023] Furthermore, lifting platforms are installed on both sides of the conveying support, and lifting plates are installed on the lifting platforms. The lifting plates are respectively set at both ends of the wind turbine tower and cable rack placement positions. The lifting plates are installed on the lifting blocks by means of a telescopic hydraulic cylinder for horizontal extension and retraction. The lifting blocks are connected to the lifting screw by means of a threaded connection. The lifting screw drives and controls the vertical lifting and lowering movement of the lifting blocks and lifting plates.

[0024] The lifting plates are horizontally mounted on the lifting blocks via telescopic hydraulic cylinders. The hydraulic cylinders provide powerful lateral thrust, ensuring that the lifting plates on both sides fit tightly against the outer wall of the tower. This lateral telescopic design not only accommodates towers of different diameters but also securely locks the tower in place before lifting, completely eliminating the risk of relative displacement and rolling caused by ship swaying within the hold, thus ensuring absolute stability of the clamping. The lifting blocks move vertically via a threaded connection to the lifting screw. Compared to traditional winch wire rope lifting, screw drive offers extremely high rigidity and positioning accuracy, enabling smooth lifting of heavy-duty towers. The threaded drive also possesses inherent mechanical self-locking characteristics, ensuring that the lifting blocks will not fall even in extreme conditions such as sudden power outages or hydraulic system depressurization, providing crucial safety assurance for the cross-layer lifting of heavy-duty towers.

[0025] Furthermore, a transfer frame is installed on the conveying support. The transfer frame is rotatably mounted on a swivel base and its rotation is controlled along a vertical axis. The transfer frame is telescopically mounted on the swivel base via a lifting hydraulic cylinder. A moving track is provided on the top of the transfer frame. A slider is slidably mounted on the moving track. A top block is mounted on the slider. The top block is rotatably mounted to the slider via a swivel shaft. The top block is used to support and transfer the wind turbine tower and cable rack to the installation cable.

[0026] When not in operation, the transfer frame remains coplanar with the conveyor support, not occupying the vertical channel for tower lifting, ensuring smooth operation of the elevator. This sequential action design of first avoiding and then rotating in saves limited space in the cabin and deck, making the overall structure of the equipment more compact and adaptable to the space-constrained operating environment of offshore wind power construction vessels. The transfer frame integrates vertical axis rotation and vertical lifting functions. When connecting the tower, the transfer frame can not only rotate precisely to be directly under the tower, but also finely adjust its height through hydraulic cylinders, actively moving upward to fit against the bottom of the tower, achieving seamless transfer from elevator clamping to bottom support of the transfer frame. During the transfer of the tower to the installation cable, the moving track and slider provide high-strength rigid linear guidance, ensuring the accuracy and deviation of the tower's translation trajectory. The top block is installed by rotating with the slider through a rotary shaft, and the top block can adaptively rotate, greatly improving the accuracy of the cable docking.

[0027] In summary, the present invention has the following beneficial technical effects: 1. By placing the installation components at the middle position of the rear end of the hull deck, the loads during tower clamping, rotation and installation can be preferentially transferred to the longitudinal center of the hull, reducing the risk of heeling caused by eccentric loading. At the same time, this central layout, in conjunction with the working area at the stern of the hull, helps to reduce the dependence on the pile leg auxiliary stabilization system and improves the applicability and operational flexibility of the device in near-shore environments.

[0028] 2. The crane provides traction through steel cables, and the transmission support supports and guides the tower, enabling the tower to complete the sliding transport under deck support conditions. This transforms the traditional fully suspended state into a composite transport method of traction and support, which can effectively reduce the sway amplitude caused by sea waves and improve the safety, stability and positioning controllability of the tower transfer process.

[0029] 3. The slewing rod of the tower base support rotates along the vertical axis, allowing the tower to complete horizontal deflection in a low center of gravity state; the protective plate and the clamping arm are located on both sides of the slewing rod and form a ring-shaped clamping structure, which can provide both external protection and internal clamping and positioning during the rotation process, so that the tower maintains a stable posture when switching between the clamping position and the installation position, and improves the coaxial accuracy when docking with the foundation pile.

[0030] 4. The bottom of the slewing boom adopts a segmented folding structure, which works together with hinges, bolts and swing hydraulic cylinders. In the non-working state, it can be folded to reduce the overall height and center of gravity, reducing the impact of wind load in the navigation or standby state. In the working state, the bolts can be tightened to restore the two sections of the slewing boom to a high-rigidity whole, thus taking into account both the safety of equipment transportation and the structural stability during heavy-load installation.

[0031] 5. The slewing bearing and the bottom slewing frame form an upper and lower support, the slewing track and wheels provide stable rolling guidance, and the slewing gear and slewing motor provide controllable driving force, so that the slewing rod can still achieve low-speed, stable and precise slewing when carrying the tower. This combination of multi-point support and rigid transmission effectively reduces the swaying, swaying and local stress concentration problems during the slewing process.

[0032] 6. The folding control lever drives the protective plate to swing and unfold, forming an effective protective barrier in the working area; the swing lever drives the clamping arm to open and close, making the clamping action more flexible and controllable. The clamping rollers are set on the clamping arm, which can reduce frictional resistance and provide directional guidance when the tower enters the clamping area, reducing the risk of scratches on the tower surface and rigid collisions, thereby improving the overall clamping protection effect.

[0033] 7. The lifting plates on both sides clamp the tower laterally under the action of the telescopic hydraulic cylinder to prevent the tower from rolling or shifting due to shaking in the cabin. The lifting blocks and lifting screws work together to achieve vertical rigid lifting, so that the tower can be raised smoothly to the deck working height. The combination of hydraulic clamping and screw lifting not only improves the stability and positioning accuracy of heavy-load lifting, but also enhances the safety guarantee capability under abnormal working conditions by utilizing the self-locking characteristics of screw transmission.

[0034] 8. When not in operation, the transfer frame is arranged on the same plane as the conveyor support, without interfering with the lifting of the elevator. After the tower is in place, the transfer frame enters the area under the tower through rotation and lifting to complete the receiving. Then, with the help of the moving rail and slider, the tower is smoothly sent to the installation cable. The top block is connected to the slider through the rotation shaft, which can adaptively adjust the support posture during the handover process, reduce jamming and impact caused by docking errors, and thus realize the smooth transition and high-precision transfer of the tower between different support mechanisms. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 This is a three-dimensional structural diagram of the present invention; Figure 3 for Figure 2 A magnified view of part A; Figure 4 for Figure 2 A magnified view of part B; Figure 5 for Figure 2 Another perspective structural diagram; Figure 6 for Figure 5 A magnified view of a portion at point C; Figure 7 This is a top view of the structure of the present invention; Figure 8 for Figure 7 A schematic diagram of the full cross-section of the DD section.

[0036] Explanation of reference numerals in the attached figures: 1. Slewing boom; 11. Tower base installation; 111. Swing hydraulic cylinder; 112. Slewing bearing; 113. Slewing frame; 114. Slewing track; 115. Slewing gear; 116. Slewing motor; 12. Protective plate; 121. Folding hinge; 122. Folding control lever; 13. Clamping arm; 131. Swinging rod; 132. Clamping roller; 14. Lifting rope; 141. Lifting connecting block; 142. Top pulley; 143. Lifting winch; 2. Crane; 21. Lifting boom; 2 11. Rotary platform; 212. Lifting cable; 213. Lifting connecting block; 214. Lifting winch; 3. Conveyor support; 31. Installation cable; 311. Cable track; 312. Positioning flap; 32. Elevator; 321. Lifting plate; 322. Lifting screw; 323. Lifting block; 324. Telescopic hydraulic cylinder; 33. Transfer frame; 331. Rotary seat; 332. Lifting hydraulic cylinder; 333. Sliding block; 334. Top block; 335. Moving track; 336. Rotary shaft. Detailed Implementation

[0037] The following will be combined with the appendix Figures 1-8 The technical solutions in the embodiments of the present invention are clearly and completely described herein. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0038] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0039] Example 1: This invention discloses an installation and cable laying device for offshore wind turbines, referring to... Figure 1 The system includes installation components and hoisting components, which are installed on the ship's deck. The installation components are used to install wind turbine towers and cable racks, and the hoisting components are used to hoist and position the wind turbine towers and cable racks to the installation components. A conveying component is provided on one side of the installation components, which is used to cooperate with the hoisting components to transport the wind turbine towers and cable racks to the installation components. The installation components are located at the middle of the rear end of the ship's deck. The installation components include a slewing rod 1, which rotates between the wind turbine tower and cable rack clamping position and the installation position. The hoisting components include a crane 2, and the conveying components include a conveying bracket 3. The crane 2 pulls the wind turbine tower and cable racks to slide on the conveying bracket 3 and position them at the wind turbine tower and cable rack clamping position via steel cables.

[0040] In this embodiment, the installation component is located at the middle position of the rear end of the hull deck. This position is preferably close to the longitudinal centerline of the hull, so that the gravity load and operating load generated by the wind turbine tower and cable rack during transportation, clamping and installation are transferred to the main structure of the hull as symmetrically as possible. This central arrangement can reduce the problem of hull heeling and excessive local stress caused by eccentric loading, improve the stability of the ship and the overall operational safety in the offshore construction state. Arranging the installation component at the rear end of the deck is conducive to forming a dedicated installation operation area at the stern, which is convenient to match the position of the offshore wind turbine foundation, and also helps to leave enough space for the removal after the tower and cable rack are installed.

[0041] The installation component includes a slewing rod 1, which is used to rotate between the clamping position and the installation position of the wind turbine tower and cable frame. Specifically, the slewing rod 1 can change its angle in the horizontal plane around its installation center, so that it receives the wind turbine tower and cable frame delivered by the conveying component at the clamping position, and rotates to the installation position after being clamped and stabilized, so as to connect with the foundation structure, installation base or predetermined connection position. The setting of the slewing rod 1 makes it possible for the wind turbine tower and cable frame delivered to the designated position on the deck to complete the position conversion by the installation component itself without having to be lifted a large area again. This reduces the number of aerial suspension adjustments and improves the installation alignment accuracy and operation continuity.

[0042] The hoisting component includes a crane 2, which is used to lift, traction, and transport the wind turbine tower and cable frame. Unlike the traditional method of relying entirely on cranes for suspended transport, in this embodiment, the crane 2 mainly applies traction force to the wind turbine tower and cable frame through steel cables, causing them to slide along a predetermined direction on the transport support 3. Thus, during the movement of the wind turbine tower and cable frame, most of their weight is borne by the transport support 3, while the crane 2 mainly undertakes traction and attitude control functions. This significantly reduces the amplitude of component swaying under the action of wind and waves at sea, reduces the instantaneous load and anti-overturning requirements of the crane 2, and improves the transport stability of the tower and cable frame in the near-shore environment.

[0043] The conveying component includes a conveying support 3, which is disposed on one side of the installation component and preferably arranged along the conveying direction of the wind turbine tower and cable frame. The main function of the conveying support 3 is to provide a continuous support surface or guide support path for the wind turbine tower and cable frame, so that they can slide stably along the conveying support 3 under the traction of the crane 2's steel cable, and finally be positioned at the clamping position of the wind turbine tower and cable frame. The conveying support 3 can be set as a straight support form according to the structural shape of the wind turbine tower and cable frame, or a guide limiting structure can be appropriately set to limit its lateral displacement. Through the cooperation of the conveying support 3 and the crane 2, the movement mode of the wind turbine tower and cable frame is changed from high-altitude suspended transportation to traction sliding transportation under deck support, which is conducive to improving the safety and controllability of offshore operations.

[0044] In terms of working principle, the crane 2 is connected to the wind turbine tower and cable frame via steel cables. When the crane 2 outputs traction force, the wind turbine tower and cable frame move along a predetermined path on the deck towards the installation component under the support of the conveying bracket 3. After the wind turbine tower and cable frame slide to the clamping position, the slewing rod 1 in the installation component receives or clamps them. Then, through the rotation of the slewing rod 1, the wind turbine tower and cable frame are transferred from the clamping position to the installation position for subsequent installation. In the above structure, the crane 2 is responsible for pulling and auxiliary positioning, the conveying bracket 3 is responsible for support and guidance, and the slewing rod 1 is responsible for clamping and rotation.

[0045] Move the vessel to the designated offshore construction area and ensure that the installation components at the rear of the vessel deck are facing the wind turbine foundation or the area to be installed. Before construction, confirm that the vessel is stable, there are no obstructions in the deck work area, and the installation components, hoisting components, and conveying components are in standby mode.

[0046] Place the wind turbine tower and cable rack to be installed at the starting position of the conveying support 3. When placing them, the length direction of the wind turbine tower and cable rack should be basically consistent with the conveying direction of the conveying support 3. Check the contact state between them and the support surface to avoid local suspension or eccentric support.

[0047] The steel cable of the crane 2 is used to connect with the wind turbine tower and cable frame. The connection position is preferably set at a position where the component is under relatively stable stress and the structural strength is high, so as to ensure uniform stress and stable posture during traction. After the connection is completed, a test pull should be performed to confirm that the steel cable is under normal stress, the connection is reliable and the component is not stuck on the conveyor support 3.

[0048] Crane 2 slowly tightens the steel cable, applying traction force to the wind turbine tower and cable frame, causing them to slide along the conveyor support 3 towards the installation component. During the traction process, the sliding speed should be controlled smoothly to avoid sudden acceleration or impact pulling, so as to reduce the vibration and offset of the component on the conveyor support 3. If the sea conditions change significantly, the traction speed should be further reduced, and if necessary, the process should be paused in sections until the attitude stabilizes before continuing the transport.

[0049] Once the wind turbine tower and cable frame have slid to the clamping position, the crane 2 should be stopped from continuing to pull, and the slewing rod 1 in the installation components should be used for clamping or positioning. At this time, it should be ensured that the wind turbine tower and cable frame are within the operable range of the slewing rod 1, and that their positional relationship with the clamping position meets the subsequent slewing requirements.

[0050] After the slewing rod 1 securely clamps the wind turbine tower and cable frame, the traction of the crane 2 cable is released or reduced, and the slewing rod 1 rotates it from the clamping position to the installation position. During the rotation, the rotation should be smooth and continuous to avoid rapid start and stop causing the components to swing or be impacted. After reaching the installation position, the wind turbine tower and cable frame are then installed in place in conjunction with subsequent installation procedures.

[0051] Mechanical limiters or angle detection devices are preferably installed between the rotary rod 1 and the clamping station or installation station to limit the rotation range and confirm the current station position, thereby improving the controllability of the rotation action and the accuracy of station switching.

[0052] In summary, this embodiment achieves stable transport, accurate clamping, and efficient rotation installation of wind turbine towers and cable racks in the marine environment by arranging the installation components at the middle position of the rear end of the ship's deck and forming a sequentially connected collaborative working relationship between the crane 2, the conveying support 3, and the slewing rod 1. This structure not only reduces the swaying risk under traditional suspension transport methods but also improves the rationality of equipment layout and the stability of ship operations, making it suitable for offshore installation of near-shore wind turbines and their associated cable racks.

[0053] Reference Figure 2 and Figure 5 The rotating rod 1 is rotatably mounted on the mounting base 11. The mounting base 11 is used to support the rotating rod 1 and control the rotating rod 1 to rotate along the vertical axis. A protective plate 12 and a clamping arm 13 are oscillatingly mounted on the rotating rod 1. The protective plate 12 and the clamping arm 13 are respectively oscillatingly arranged on both sides of the rotating rod 1 and respectively encircling each other. The clamping arm 13 is spaced apart at the upper and lower ends and the middle gap of the protective plate 12.

[0054] Reference Figure 4 and Figure 6 The rotary rod 1 is divided into two sections near the bottom and is folded and swinging at the division point. The rotary rod 1 is connected by a hinge on one side of the division point and installed by bolts on the other side. A swing hydraulic cylinder 111 is provided on the swinging and folding side of the rotary rod 1.

[0055] Reference Figure 4 and Figure 6 The slewing rod 1 is connected to and installed on the mounting base 11 via a slewing bearing 112. A slewing frame 113 is provided at the bottom of the slewing rod 1. A slewing track 114 is provided on the mounting base 11. The slewing frame 113 is mounted on the slewing track 114 via wheels and supports the slewing rod 1 to swing and rotate along the slewing track 114. The slewing frame 113 and the mounting base 11 are connected to the slewing gear 115 for rotation. The slewing gear 115 is connected to the slewing motor 116.

[0056] Reference Figure 3 The protective plate 12 is sway-mounted on the rotary rod 1 via a folding hinge 121. A folding control rod 122 is connected and installed on one side of the folding hinge 121. The folding control rod 122 controls the swaying of the folding hinge 121 and the protective plate 12 by extension and retraction. A swing rod 131 is connected and installed on one side of the clamping arm 13. The swing rod 131 controls the swaying of the clamping arm 13 by extension and retraction. Clamping rollers 132 are installed at intervals on the clamping arm 13.

[0057] Reference Figure 2 , Figure 4 and Figure 7 A hoisting rope 14 is installed on the slewing rod 1, and a top pulley 142 is installed on the top of the slewing rod 1. The hoisting rope 14 is wound around the top pulley 142 and connected to the hoisting winch 143. A hoisting connecting block 141 is bolted to the end of the hoisting rope 14.

[0058] The slewing rod 1 can rotate relative to the installation base 11 along the vertical axis, thereby completing the angle switching between the clamping station and the installation station. By setting the slewing rod 1 as a structure that can rotate around the vertical axis, the wind turbine tower and cable rack can be directly adjusted to the installation direction through the slewing action after being clamped or hoisted, avoiding large-scale secondary hoisting, improving the station conversion efficiency and installation positioning accuracy.

[0059] The protective plate 12 is mainly used to form a surrounding protection for the wind turbine tower and cable frame, reducing the risk of collision, abrasion and deviation from the predetermined trajectory during transportation, rotation and installation. The clamping arm 13 is mainly used to clamp, limit and guide the wind turbine tower and cable frame. The clamping arm 13 makes the clamping force distributed in multiple points along the height direction of the wind turbine tower and cable frame. Through this multi-point clamping method, the local force concentration caused by single-point clamping can be avoided, the attitude control capability of long-sized components can be improved and the overall stability in the clamping state can be enhanced.

[0060] The slewing rod 1 is connected by a hinge on one side of the split and bolted on the other side. With this structure, the slewing rod 1 can form an integral rigid rod in the working state through bolt connection to meet the load-bearing requirements during clamping, hoisting and rotation. In the non-working state or when the ship is sailing, the bolt connection can be disassembled and the rod can swing and fold around the hinge to reduce the overall height and center of gravity.

[0061] When the device is in the installation state, the swing hydraulic cylinder 111 pushes or pulls the lower section of the rod to unfold and align with the upper section of the rod, and locks the other side of the split with bolts, so that the rotating rod 1 returns to the whole load-bearing structure. When the device stops working and needs to be folded up, the bolt connection is released, and one section of the rod is rotated around the hinge under the control of the swing hydraulic cylinder 111, thereby realizing folding and storage. This not only takes into account the structural rigidity and load-bearing capacity under working conditions, but also takes into account the space compression and wind resistance safety under non-working conditions.

[0062] The slewing bearing 112 is mainly used to bear the axial load, radial load and overturning moment generated by the slewing rod 1 and the clamped and hoisted components, and to ensure that the slewing rod 1 rotates smoothly around the vertical axis. The bottom of the slewing rod 1 is provided with a slewing frame 113, and the mounting tower base 11 is provided with a slewing track 114. The slewing frame 113 is mounted on the slewing track 114 by wheels and supports the slewing rod 1 to swing and rotate along the slewing track 114. Through the joint action of the slewing bearing 112, the slewing frame 113 and the slewing track 114, the slewing rod 1 not only obtains central support under heavy load conditions, but also obtains multi-point support in the bottom circumferential direction, which can effectively distribute the slewing load and reduce the deformation or jamming problem caused by excessive load on a single support point.

[0063] The slewing frame 113 and the mounting base 11 are connected by a slewing gear 115 for rotation. The slewing gear 115 is connected to a slewing motor 116. After the slewing motor 116 outputs power, it drives the slewing frame 113 to rotate relative to the mounting base 11 through the slewing gear 115, thereby driving the slewing rod 1 to complete the slewing action. The slewing track 114 and the wheels mainly provide support and guidance, while the slewing gear 115 and the slewing motor 116 mainly provide power output and slewing control. The cooperation of the two can improve the stability and reliability of the slewing process.

[0064] The folding hinge 121 allows the protective plate 12 to switch between an unfolded state and a retracted state. A folding control rod 122 is connected to and installed on one side of the folding hinge 121. The folding control rod 122 controls the folding hinge 121 and the protective plate 12 to swing by extension and retraction. Thus, the protective plate 12 can swing outward or close inward when it is needed to form a protective enclosure, and can be folded and stored when not in use or when protection is not required, so as to reduce the space occupied.

[0065] A swing rod 131 is connected and installed on one side of the clamping arm 13. The swing rod 131 controls the swing of the clamping arm 13 through extension and retraction. Driven by the swing rod 131, the clamping arm 13 can open or close according to the external dimensions of the wind turbine tower and cable rack to achieve adaptive clamping of components of different widths or postures. Clamping rollers 132 are installed at intervals on the clamping arm 13. The clamping rollers 132 are rotatably installed along the horizontal axis tangential to the clamping arm 13. When the clamping rollers 132 come into contact with the wind turbine tower and cable rack during the clamping process, they can change from traditional surface friction or edge hard contact to rolling contact, thereby reducing surface friction resistance, reducing the risk of damage to the anti-corrosion layer, and playing a guiding and straightening role when the component enters the clamping area. After multiple clamping rollers 132 are arranged at intervals along the clamping arm 13, they can form continuous rolling guidance at different contact height positions, improving the stability of clamping.

[0066] The protective plate 12 preferentially forms an outer envelope space, within which the clamping arm 13 clamps and positions the wind turbine tower and cable rack. The clamping roller 132 reduces resistance and collisions during clamping and guiding. The folding control rod 122 and the swing rod 131 respectively realize the active opening and closing control of the protective plate 12 and the clamping arm 13. Through the above combination structure, the wind turbine tower and cable rack can obtain a continuous control effect of protection, guidance, and clamping when entering the working area of ​​the slewing rod 1.

[0067] A hoisting rope 14 is installed on the slewing rod 1, and a top pulley 142 is installed on the top of the slewing rod 1. The hoisting rope 14 is wound around the top pulley 142 and connected to the hoisting winch 143. A hoisting connecting block 141 is bolted to the end of the hoisting rope 14. When the hoisting winch 143 is working, it can retract and extend the hoisting rope 14. After the hoisting rope 14 passes through the top pulley 142 to change the direction of force transmission, it is connected to the wind turbine tower and cable frame or their lifting points by the hoisting connecting block 141, thereby lifting, assisting in support, or adjusting its posture. The top pulley 142 reduces the friction between the hoisting rope 14 and the top structure of the slewing rod 1, improves the force path, and makes the winch placement more flexible. The hoisting connecting block 141 can be used as a quick-connect component to improve hoisting and attachment efficiency and ensure connection stability.

[0068] The function of the aforementioned hoisting rope 14 system is that, after the wind turbine tower and cable rack enter the working area of ​​the slewing rod 1, the hoisting winch 143 can locally lift, straighten the ends, or make slight position adjustments to them, so that the components can more easily enter the ideal clamping posture with the cooperation of the clamping arm 13 and the protective plate 12. Especially in offshore operations, the components may have slight sway due to the influence of ship hull movement, waves and wind loads. The hoisting rope 14 can provide additional control force and improve the posture correction capability before clamping and installation.

[0069] Confirm that the rotary rod 1 is in the unfolded and locked state. If the rotary rod 1 is in the folded and retracted state, activate the swing hydraulic cylinder 111 to unfold the two sections of the rotary rod 1 to the same straight position, and then lock the split with bolts to ensure that the rotary rod 1 has the overall rigidity required for subsequent clamping and rotation.

[0070] The protective plate 12 is opened to the predetermined guide angle by folding control lever 122, and the clamping arm 13 is opened by swing lever 131 to form a clamping space for the wind turbine tower and cable rack to enter. At the same time, the clamping roller 132 is checked to ensure that the subsequent guiding process is smooth.

[0071] After the wind turbine tower and cable frame are transported to the vicinity of the clamping station, the hoisting winch 143 is used to release the hoisting rope 14, connect the hoisting connecting block 141 to the hoisting point on the wind turbine tower and cable frame, and tighten the hoisting rope 14 appropriately to put it in a slightly stressed state in order to support the components and adjust their posture.

[0072] The protective plate 12 is swung by the folding control lever 122, so that the protective plate 12 forms an outer protective envelope. At the same time, the clamping arm 13 is driven to swing inward by the swing lever 131, so that the clamping roller 132 contacts the surface of the wind turbine tower and cable rack and gradually clamps it. During the clamping process, the clamping roller 132 rolls and engages with the surface of the component, which can guide it to automatically move towards the predetermined center position.

[0073] After confirming that the wind turbine tower and cable frame have been stably clamped, the length of the hoisting rope 14 is further fine-tuned by the hoisting winch 143 to correct its local posture. Then, the slewing motor 116 is started. The slewing motor 116 drives the slewing frame 113 to rotate along the slewing track 114 through the slewing gear 115, which drives the slewing rod 1 and the wind turbine tower and cable frame it clamps to rotate from the clamping position to the installation position.

[0074] After the components are rotated into place, the hoisting winch 143 is used to perform slight lifting or stabilizing operations as needed to facilitate subsequent installation and positioning. Once the installation positions are connected, the clamping arm 13 and the protective plate 12 are released in sequence, and the hoisting connecting block 141 is disconnected to complete this stage of the operation.

[0075] Reference Figure 2 , Figure 5 and Figure 8The top of the conveyor support 3 is equipped with a cable track 311, and an installation cable 31 is slidably installed on the cable track 311. The installation cable 31 is used to support the wind turbine tower and cable frame and slide along the cable track 311 to one side. A positioning flap 312 is installed on one side of the cable track 311. The positioning flap 312 is used to position the bottom sliding position of the wind turbine tower and cable frame and assist in supporting the wind turbine tower and cable frame to swing and stand upright.

[0076] Reference Figure 2 , Figure 5 and Figure 8 The conveying support 3 is equipped with lifting platforms 32 on both sides. Lifting plates 321 are installed on the lifting platforms 32. The lifting plates 321 are respectively set at both ends of the wind turbine tower and cable rack placement positions. The lifting plates 321 are horizontally extended and retracted on the lifting blocks 323 by telescopic hydraulic cylinders 324. The lifting blocks 323 are connected to the lifting screw 322 by threads. The lifting screw 322 drives the vertical lifting and lowering movement of the lifting blocks 323 and the lifting plates 321.

[0077] Reference Figure 2 , Figure 5 and Figure 8 The conveying support 3 is equipped with a transfer frame 33, which is rotatably mounted on a rotary seat 331 and rotates along a vertical axis. The transfer frame 33 is telescopically mounted on the rotary seat 331 via a lifting hydraulic cylinder 332. A moving track 335 is provided on the top of the transfer frame 33, and a slider 333 is slidably mounted on the moving track 335. A top block 334 is mounted on the slider 333, and the top block 334 is rotatably mounted to the slider 333 via a rotary shaft 336. The top block 334 is used to support and transfer the wind turbine tower and cable rack to the mounting cable 31.

[0078] The installation of the sliding cable 31 can be understood as a bearing sliding component, which forms a sliding fit relationship with the sliding cable track 311. After the wind turbine tower and cable frame are placed on it, directional transportation can be achieved under relatively small resistance conditions. Through this structure, the position adjustment that was originally completed by overall hoisting or multi-point towing can be transformed into unidirectional sliding transportation along a predetermined trajectory, thereby improving the transfer stability of the wind turbine tower and cable frame on the ship deck and reducing the risk of deviation.

[0079] A positioning flap 312 is installed on one side of the cable track 311. The positioning flap 312 is located at the end of one side of the cable track 311 or in the corresponding positioning area. When the wind turbine tower and cable frame slide along the cable 31 to the predetermined position, their bottom end can contact the positioning flap 312, thereby limiting further sliding and achieving bottom stop positioning. The positioning flap 312 can also serve as a lower support point, providing support and a flipping support point for the bottom end when the wind turbine tower and cable frame transition from a horizontal conveying state to an inclined or vertical state. The wind turbine tower and cable frame can be accurately limited at the end of the conveying process and can smoothly enter the erection preparation state, reducing bottom slippage and attitude loss.

[0080] The conveying support 3 is equipped with lifting platforms 32 on both sides. The lifting platforms 32 are used to lift, limit, and adjust the height of the wind turbine tower and cable frame at both ends. The lifting platforms 32 are equipped with lifting plates 321. The lifting plates 321 are respectively set at both ends of the wind turbine tower and cable frame placement position. By setting the lifting plates 321 at both ends, the wind turbine tower and cable frame can be supported from the front and back.

[0081] The lifting plate 321 is horizontally extended and retracted on the lifting block 323 via a telescopic hydraulic cylinder 324. The telescopic hydraulic cylinder 324 is used to control the lifting plate 321 to extend inward or retract outward relative to the lifting block 323. Thus, the lifting plate 321 can not only achieve vertical lifting, but also be adaptively adjusted according to the diameter, width or horizontal placement position of the wind turbine tower and cable rack. When extending horizontally, the lifting plate 321 can be inserted into or close to the lower or side of the component to form support and limit. When retracting horizontally, it can release the working space, making it convenient for the wind turbine tower and cable rack to be moved or detached from the support.

[0082] The lifting block 323 is connected to the lifting screw 322 via a thread. The lifting screw 322 drives the vertical lifting and lowering movement of the lifting block 323 and the lifting plate 321. Specifically, the lifting screw 322 rotates under the drive of the drive device, and the rotational motion is converted into the linear lifting motion of the lifting block 323 by utilizing the screw nut transmission principle, thereby driving the lifting plate 321 to adjust its vertical position. This screw lifting method has the characteristics of smooth lifting, high positioning accuracy, and strong load-bearing capacity. It is suitable for fine-tuning the elevation of large-size, heavy-load components such as wind turbine towers and cable racks. By combining the lifting screw 322 with the telescopic hydraulic cylinder 324, the lifting plate 321 can complete compound actions in both vertical and horizontal directions, which can adapt to different placement heights and meet different clamping range requirements, thus improving the adaptability of the equipment.

[0083] The conveying support 3 is equipped with a transfer frame 33, which is rotatably mounted on a swivel base 331 and controlled to rotate along a vertical axis. The swivel base 331 provides rotational support and rotation center for the transfer frame 33, enabling the transfer frame 33 to adjust its orientation according to the transfer direction requirements of the wind turbine tower and cable frame. By setting a rotatable transfer frame 33, the wind turbine tower and cable frame can be transferred from the deck placement work to the installation cable 31 without being restricted by a single fixed direction, thereby enhancing the adaptability of the conveying support 3 to different material angles and different installation directions.

[0084] The transfer frame 33 is mounted on the rotary seat 331 by means of a lifting hydraulic cylinder 332. The lifting hydraulic cylinder 332 is used to adjust the overall height of the transfer frame 33. Through this height adjustment function, the transfer frame 33 can be matched with the initial support surface of the wind turbine tower and cable frame, the height of the lifting plate 321 and the height of the installation cable 31, so as to maintain a smooth transition during the transfer of components, avoid large step differences, and reduce impact and jamming.

[0085] The top of the transfer frame 33 is provided with a moving track 335, and a slider 333 is slidably installed on the moving track 335. The slider 333 can move back and forth along the moving track 335 to move the support point from one end of the transfer frame 33 to the other end, so as to realize the directional pushing or supporting transport of wind turbine towers and cable racks. Through the linear movement of the track and slider, the transfer action path is clear and the control is stable, which is beneficial to the attitude control of large-sized components during short-distance transfer.

[0086] A top block 334 is mounted on the slider 333. The top block 334 is rotatably mounted to the slider 333 via a rotary shaft 336. The top block 334 is used to support and transfer the wind turbine tower and cable rack to the mounting cable 31. Since the top block 334 is rotatably mounted relative to the slider 333 via the rotary shaft 336, it can adaptively rotate according to the inclination angle or curvature of the contact surface when in contact with the wind turbine tower and cable rack. This makes the contact surface fit the bottom or lower side contour of the component more closely. This structure can reduce the risk of local off-center loading and slippage caused by rigid jacking and improve the stability during the jacking support process.

[0087] The lifting platform 32 and lifting pallet 321 are responsible for initial support, limiting, and height adjustment of the wind turbine tower and cable frame; the transfer frame 33 is responsible for smoothly transferring the wind turbine tower and cable frame from the placement position to the installation cable 31; the installation cable 31 receives the components on the cable track 311 and continues to slide to one side; the positioning flip plate 312 limits the bottom of the wind turbine tower and cable frame at the end of the sliding and provides lower support for subsequent swinging and erection. Through the coordinated cooperation of the above-mentioned conveying, supporting, transferring, limiting, and flipping auxiliary structures, the wind turbine tower and cable frame can be gradually transitioned from the initial flat position to the installation preparation state, reducing the number of intermediate hoisting operations and improving the continuity of transportation.

[0088] The wind turbine tower and cable rack are hoisted or transported to the predetermined placement position of the conveyor support 3, so that both ends are located within the working range of the lifting plate 321. According to the component size and placement posture, the lifting screw 322 is controlled to rotate, and the height of the lifting block 323 and the lifting plate 321 is adjusted so that the lifting plate 321 is adapted to the height of the bottom of the component.

[0089] Activate the telescopic hydraulic cylinder 324 to extend the lifting plates 321 on both sides laterally, supporting or limiting the ends of the wind turbine tower and cable frame. If necessary, the height of the lifting plates 321 can be further fine-tuned to keep the wind turbine tower and cable frame in a stable position on the conveyor support 3.

[0090] According to the direction of the installation cable 31, adjust the rotation angle of the transfer frame 33 on the slewing seat 331 so that the transfer direction corresponds to the position of the installation cable 31; then adjust the height of the transfer frame 33 by the lifting hydraulic cylinder 332 so that the top block 334 can contact the bottom of the wind turbine tower and cable frame or a suitable stress-bearing part.

[0091] The control slider 333 moves along the moving track 335, so that the top block 334 abuts against and supports the wind turbine tower and cable rack, and moves them from the initial placement position toward the installation cable 31. During the movement, the top block 334 can rotate around the rotating shaft 336 to maintain stable support for the components.

[0092] Example 2: Based on Example 1, the following is added: Reference Figure 2 and Figure 5 The crane 2 includes a lifting arm 21, which is mounted on a slewing platform 211 and rotates along a vertical axis. A lifting cable 212 is wound around the lifting arm 21. One end of the lifting cable 212 is bolted to a lifting connecting block 213, and the other end is wound around a lifting winch 214. The lifting connecting block 213 is used to connect the top of the wind turbine tower and the cable rack.

[0093] The above description is merely an example and illustration of the structure of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the scope defined by the structure of the invention, and all such modifications and additions should fall within the protection scope of the present invention.

Claims

1. A near-shore wind turbine installation and cable laying device, comprising an installation component and a hoisting component, wherein the installation component and the hoisting component are installed on the deck of a ship, the installation component is used to install the wind turbine tower and cable rack, the hoisting component is used to hoist the wind turbine tower and cable rack and position them at the installation component, a conveying component is provided on one side of the installation component, the conveying component is used to cooperate with the hoisting component to transport the wind turbine tower and cable rack to the installation component, characterized in that: The installation component is located at the middle of the rear end of the ship's deck. The installation component includes a slewing rod (1). The slewing rod (1) rotates between the wind turbine tower and cable frame clamping station and the installation station. The hoisting component includes a crane (2). The conveying component includes a conveying bracket (3). The crane (2) pulls the wind turbine tower and cable frame on the conveying bracket (3) with steel cables and slides and positions them at the wind turbine tower and cable frame clamping station.

2. The offshore wind turbine installation and cable laying device according to claim 1, characterized in that: The slewing rod (1) is rotatably mounted on the mounting base (11). The mounting base (11) is used to support the slewing rod (1) and control the slewing rod (1) to rotate along the vertical axis. A protective plate (12) and a clamping arm (13) are swayingly mounted on the slewing rod (1). The protective plate (12) and the clamping arm (13) are respectively swayingly arranged on both sides of the slewing rod (1) and respectively encircling each other. The clamping arm (13) is spaced apart at the upper and lower ends and the middle gap of the protective plate (12).

3. The offshore wind turbine installation and cable laying device according to claim 2, characterized in that: The rotary rod (1) is divided into two sections near the bottom and is folded and swung at the division point. The rotary rod (1) is connected by a hinge on one side of the division point and installed by bolts on the other side. A swing hydraulic cylinder (111) is provided on the swing folding side of the rotary rod (1).

4. The offshore wind turbine installation and cable laying device according to claim 2, characterized in that: The slewing rod (1) is connected to and installed on the mounting base (11) via a slewing bearing (112). A slewing frame (113) is provided at the bottom of the slewing rod (1). A slewing track (114) is provided on the mounting base (11). The slewing frame (113) is mounted on the slewing track (114) via wheels and supports the slewing rod (1) to swing and rotate along the slewing track (114). The slewing frame (113) and the mounting base (11) are connected to each other via a slewing gear (115). The slewing gear (115) is connected to a slewing motor (116).

5. The offshore wind turbine installation and cable laying device according to claim 2, characterized in that: The protective plate (12) is swayed on the rotating rod (1) via a folding hinge (121). A folding control rod (122) is connected and installed on one side of the folding hinge (121). The folding control rod (122) pulls the folding hinge (121) and the protective plate (12) to swing by extension and retraction control. A swing rod (131) is connected and installed on one side of the clamping arm (13). The swing rod (131) pulls the clamping arm (13) to swing by extension and retraction control. Clamping rollers (132) are installed at intervals on the clamping arm (13).

6. The offshore wind turbine installation and cable laying device according to claim 2, characterized in that: A hoisting rope (14) is installed on the slewing rod (1), and a top pulley (142) is installed on the top of the slewing rod (1). The hoisting rope (14) is wound around the top pulley (142) and connected to the hoisting winch (143). A hoisting connecting block (141) is bolted to the end of the hoisting rope (14).

7. The offshore wind turbine installation and cable laying device according to claim 1, characterized in that: The crane (2) includes a lifting arm (21), which is mounted on a slewing platform (211) and swings along a vertical axis by relying on the slewing platform (211). A lifting cable (212) is wound around the lifting arm (21). One end of the lifting cable (212) is bolted to a lifting connecting block (213), and the other end is wound around a lifting winch (214). The lifting connecting block (213) is used to connect the top of the wind turbine tower and the cable rack.

8. The offshore wind turbine installation and cable laying device according to claim 1, characterized in that: The top of the conveyor support (3) is equipped with a cable track (311), and an installation cable (31) is slidably installed on the cable track (311). The installation cable (31) is used to support the wind turbine tower and cable frame and slide along the cable track (311) to one side. A positioning flap (312) is installed on one side of the cable track (311). The positioning flap (312) is used to position the bottom sliding position of the wind turbine tower and cable frame and assist in supporting the wind turbine tower and cable frame to swing and stand upright.

9. A near-shore wind turbine installation and cable laying device according to claim 1 or 8, characterized in that: The conveying support (3) is equipped with a lifting machine (32) on both sides. The lifting machine (32) is equipped with a lifting plate (321). The lifting plate (321) is respectively set at both ends of the wind turbine tower and cable rack placement position. The lifting plate (321) is installed on the lifting block (323) by horizontal extension and retraction of the telescopic hydraulic cylinder (324). The lifting block (323) is connected to the lifting screw (322) by thread. The lifting screw (322) drives the lifting block (323) and the lifting plate (321) to move vertically.

10. The offshore wind turbine installation and cable laying device according to claim 9, characterized in that: The transfer frame (33) is mounted on the transfer support (3). The transfer frame (33) is rotatably mounted on the rotary seat (331) and rotates along the vertical axis. The transfer frame (33) is telescopically mounted on the rotary seat (331) by the lifting hydraulic cylinder (332). The top of the transfer frame (33) is provided with a moving track (335). A slider (333) is slidably mounted on the moving track (335). A top block (334) is mounted on the slider (333). The top block (334) is rotatably mounted with the slider (333) through the rotary shaft (336). The top block (334) is used to support and transfer the wind turbine tower and cable rack to the installation cable (31).

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