A wind turbine nacelle cover quick docking installation assembly

Abstract

This invention belongs to the field of nacelle cover installation technology, specifically a quick-connect installation component for wind turbine nacelles, including a nacelle flange and a tower flange. A nacelle body is fixedly connected to the top of the nacelle flange. A receiving ring is fixedly connected to the bottom of the nacelle body via a fixing column. The top of the receiving ring has a hexagonal through-slot for pre-storing bolts, and the hexagonal through-slot matches the bolt head. The hexagonal through-slot corresponds to the position of the slot on the nacelle flange. This invention achieves automated bolt release and tightening through a bolt release and tightening unit, coupled with a pressure sensor for dual verification of adsorption and insertion status, solving the risk of bolts falling from heights due to the lack of verification in traditional methods. Locking protection through a rotation-limiting and release-limiting unit avoids misjudgment of insertion and bolt deflection, ensuring accurate engagement of the intelligent wrench and improving installation safety and efficiency.

Description

Technical Field

[0001] This invention belongs to the field of nacelle cover installation technology, specifically a quick docking and installation component for wind turbine nacelles. Background Technology

[0002] This component is a specialized auxiliary part for the installation of wind turbine nacelles. Its core consists of positioning structures, locking components, and other parts. Its main function is to enable rapid docking and fixing between the wind turbine nacelle and the tower, solving the problems of difficult alignment, long time consumption, and low efficiency in traditional installation methods. At the same time, it ensures the structural stability after docking, adapts to the installation scenarios of nacelles of wind turbines with different power ratings, helps to simplify the on-site installation process, and improves the efficiency of wind turbine assembly.

[0003] Existing technologies have the following significant limitations in handling the docking and installation of the fuselage canopy:

[0004] First, the traditional method only controls the bolt adsorption by magnetic on / off, without verifying the adsorption firmness. When there is oil on the bolt head or the strong magnetic force weakens, the adsorption is easy to loosen. The risk of the bolt falling during high-altitude installation is extremely high, posing a safety hazard.

[0005] Secondly, relying on manual observation or distance sensors to determine the bolt insertion status makes it difficult to accurately identify situations such as blockage of holes and grooves or slight misalignment of flanges, which can easily lead to misjudgments. If the bolt is released before it is fully inserted, it will cause uneven tightening force. If the bolt is forced to be inserted when it is stuck, it will also damage the bolt and flange.

[0006] Third, during high-altitude operations, factors such as strong winds, misalignment of bolts and holes, and accidental contact during installation can easily cause bolts to deflect circumferentially, making it impossible for the smart wrench to accurately fit the bolt head, affecting the installation progress, and even causing mechanical jamming.

[0007] Therefore, the present invention provides a quick docking and installation assembly for wind turbine nacelle covers. Summary of the Invention

[0008] To address the shortcomings of existing technologies and solve the problems of traditional methods that rely solely on magnetic on / off control of bolt adsorption without verifying its strength, the current approach addresses these issues. For example, when the bolt head is contaminated with oil or the magnetic force weakens, the adsorption can easily loosen, posing a significant safety hazard as the bolt may fall during high-altitude installations. Furthermore, relying on manual observation or distance sensors to determine bolt insertion status makes it difficult to accurately identify blockages in the slots or slight flange misalignment, leading to misjudgments. Releasing the bolt before it is fully inserted can cause uneven tightening force. Forcing insertion when the bolt is stuck can damage both the bolt and the flange. During high-altitude operations, factors such as strong winds, bolt and slot misalignment, and accidental contact during installation can cause circumferential deflection of the bolt, preventing the smart wrench from accurately engaging the bolt head, affecting installation progress, and even causing mechanical jamming.

[0009] The technical solution adopted by the present invention to solve its technical problem is as follows: A wind turbine nacelle cover quick docking and installation assembly of the present invention includes a nacelle flange, a tower flange and a nacelle body fixed to the top of the nacelle flange; a receiving ring is fixed to the bottom of the nacelle body by a fixing column, and a hexagonal through groove adapted to the bolt head is opened on the top of the receiving ring, and the hexagonal through groove corresponds to the position of the hole groove of the nacelle flange and the tower flange.

[0010] The receiving ring is equipped with a bolt release and tightening unit, a control module and a power unit. The bolt release and tightening unit includes a strong electromagnetic block, a first electric push rod, a second electric push rod and an intelligent wrench, which are used for lowering and tightening the bolt. A pressure sensor is embedded in the bottom of the strong electromagnetic block.

[0011] The receiving ring is equipped with a rotation limiting unit and a release limiting unit, and the rotation limiting unit and the release limiting unit include a limiting block and an electromagnetic layer; the pressure sensor and the electromagnetic layer are both electrically connected to the control module.

[0012] The control module, pressure sensor, rotation limiting unit, and release limiting unit form a verification linkage:

[0013] When the strong electromagnetic block attracts the bolt, the pressure sensor detects the contact pressure. If the pressure reaches the standard, the control module unlocks the release unit; otherwise, an alarm is triggered.

[0014] When the strong electromagnetic block with bolts is inserted into the slot, the pressure sensor detects the reaction force of the slot. If the reaction force is within the acceptable range, the bolt is released and the rotation limit unit is unlocked to squeeze the bolt to prevent it from rotating. If the reaction force is not within the acceptable range, the first electric push rod is controlled to lift in the reverse direction and an alarm is triggered. At the same time, the rotation limit unit is unlocked to seal the slot.

[0015] The limiting rotation unit and the limiting release unit are controlled by the control module to control the on and off of the electromagnetic layer. When the electromagnetic layer is energized, the adsorbing limiting block retracts and unlocks. When the power is off, the limiting block extends and locks under the action of the reset spring.

[0016] In this invention, by fixing the cabin flange and cabin body on the ground, and simultaneously fixing the receiving ring with bolts, the receiving ring and its connecting structure equipment can be disassembled and reused. Bolts are placed in the hexagonal through slots, and then they are hoisted into the air and docked with the tower flange. After docking, the bolting unit, the power unit, and the control module work together to achieve rapid bolt fixing between a pair of flanges.

[0017] The rotation limiting unit is set at the joint of the bore and groove of the nacelle flange and the tower flange, and the detachment limiting unit is set at the outlet end of the hexagonal through groove. When the control module unlocks the detachment limiting unit, it only releases the detachment limiting unit of the hexagonal through groove where the currently adsorbed bolt is located, while the detachment limiting units of the other hexagonal through grooves remain locked.

[0018] Preferably, both the limiting unit and the limiting rotation unit include an upper T-shaped limiting groove and a lower T-shaped limiting groove, and the opposite sidewalls of a set of hexagonal through grooves are provided with upper T-shaped limiting grooves. A set of lower T-shaped limiting grooves is provided at the lower position of the outer sidewall of the receiving ring. The inner walls of the upper T-shaped limiting groove and the lower T-shaped limiting groove are both fixed with an electromagnetic layer. The limiting block is composed of an upper T-shaped limiting block and a lower T-shaped limiting block. The sidewalls of the electromagnetic layer in the upper T-shaped limiting groove and the lower T-shaped limiting groove are respectively fixed with the upper T-shaped limiting block and the lower T-shaped limiting block by a reset spring. The cross-section of the receiving ring is inverted L-shaped, and the upper T-shaped limiting block is located above the lower T-shaped limiting block.

[0019] In this invention, the side wall of the upper T-shaped limiting block is provided with an arc groove, which is adapted to the outer contour of the bolt rod. When the limiting unit is unlocked (the upper T-shaped limiting block retracts), the arc groove can play an auxiliary guiding role for the bolt, ensuring that the bolt maintains coaxiality during the lowering process.

[0020] The difference between the radius of the arc groove of the upper T-shaped limiting block and the radius of the bolt rod is 0.5-1mm, and the length of the arc groove is not less than 1.5 times the diameter of the bolt rod; the extension length of the lower T-shaped limiting block is not less than 1.2 times the diameter of the hole groove, to ensure complete sealing of the hole groove.

[0021] Preferably, the bonding pressure threshold detected by the pressure sensor is 5-10N, corresponding to complete bonding between the strong electromagnetic block and the bolt head; bonding pressure <5-10N is substandard, corresponding to incomplete bonding between the strong electromagnetic block and the bolt head.

[0022] The required reaction force of the slot is stable at 100-150N and lasts for ≥0.5 seconds, corresponding to the bolt being fully inserted into the slot and its head adhering to the flange surface; if the reaction force is less than 100N, the insertion is incomplete, and if the reaction force exceeds 150N and lasts for <0.5 seconds, it is stuck.

[0023] In this invention, the detection period of the hole groove reaction force is the process in which the strong electromagnetic block drives the bolt to contact the flange surface to a preset insertion depth, and the preset insertion depth is equal to the sum of the effective thread length of the bolt and the flange thickness.

[0024] Preferably, an image scanning sensor is fixed to the top of the receiving ring, and the image scanning sensor is positioned facing the hexagonal through slot; the image scanning sensor is used to collect the position coordinates of the hexagonal through slot and the bolt distribution information and transmit it to the control module. The control module then groups the bolts according to the rule that adjacent groups do not overlap and each group is diagonally symmetrical.

[0025] In this invention, the diagonal symmetry is based on the center of the engine room flange as the origin of symmetry. Each group of bolts consists of 2-6 bolts that are evenly distributed along the circumference, and the circumferential interval between two adjacent groups of bolts is not less than 30°.

[0026] Preferably, the control module pre-stores a distribution map of the bore and slot of the engine room flange and the tower flange; the bolt position information collected by the image scanning sensor is compared with the distribution map of the bore and slot to generate a bolt-hole correspondence table; the control module drives the power unit to move the bolt loosening and tightening unit to the target bore and slot position based on the correspondence table.

[0027] Preferably, the power unit includes a gear ring, the gear ring is fixedly connected to the bottom of the cabin, the top of the cabin is rotatably connected to a rotating shaft through a circular groove, a transmission gear is fixedly connected to the bottom end of the rotating shaft and meshes with the gear ring, and a servo motor is provided at the top end;

[0028] The bolt release and tightening unit is located at the bottom of the gear ring and its position is adjusted in the circumferential direction as the gear ring rotates. An angle sensor is installed on the output shaft of the servo motor and is electrically connected to the control module to provide feedback on the rotation angle of the bolt release and tightening unit.

[0029] Preferably, the first electric push rod is fixed to the bottom of the gear ring, and the second electric push rod is fixed to the bottom of the gear ring through a support plate; an arc-shaped block is fixed to the bottom end of the first electric push rod, and the bottom of the arc-shaped block is fixed to a set of extension columns and a strong electromagnetic block; the bottom of the second electric push rod is fixed to the smart wrench.

[0030] The first electric push rod and the second electric push rod are symmetrically distributed at intervals of 45°-60° along the circumference of the toothed ring and are alternately distributed, corresponding to the bolt release and tightening processes respectively; here, the bolt tightening work is completed in multiple steps, rather than tightening the bolt in one go.

[0031] The toothed ring drives the bolt release and tightening unit to perform a cyclical sequence of actions: "drive the first electric push rod to synchronously lower the current group of diagonal bolts → rotate the toothed ring to the corresponding angle → drive the second electric push rod to synchronously tighten the current group of bolts → synchronously lower the subsequent group of diagonal bolts".

[0032] In this invention, the corresponding angle is equal to 360° divided by the total number of bolt groups, and the rotation angle error is fed back to the control module through the angle sensor and corrected in real time by the servo motor, with a correction accuracy of ≤0.5°.

[0033] The first and second electric actuators are symmetrically distributed at 45°-60° intervals along the circumference of the toothed ring. This angle range is optimized based on the number of flange bolts in common wind turbine units (such as 12 or 16 bolts): when there are 12 flange bolts, a 60° interval is selected, and they are installed in 3 groups in a cycle; when there are 16 bolts, a 45° interval is selected, and they are installed in 4 groups in a cycle, so that the number of groups and the distribution of actuators are perfectly matched.

[0034] In the cyclical timing action, the 'current group' refers to the group of bolts being lowered, and the 'subsequent group' refers to the next group of bolts to be installed. The 'corresponding angle' of the toothed ring rotation is consistent with the circumferential distribution interval of each group of bolts. This is automatically calculated by the control module based on the grouping results from the image scanning sensor and drives the servo motor to execute, ensuring seamless connection between the bolt lowering and tightening processes.

[0035] Preferably, an electromagnetic induction sensor is installed on the outer side of the receiving ring. The electromagnetic induction sensor is electrically connected to the control module and is used to detect the energization status of the electromagnetic layer and to feed back the extension and retraction positions of the upper T-shaped limit block and the lower T-shaped limit block to the control module.

[0036] Preferably, a docking ring block is fixedly connected to the center of the top of the tower flange. The docking ring block is conical with its conical tip pointing upwards. The docking ring block is compatible with the central circular groove of the nacelle flange.

[0037] In this invention, laser alignment sensors are installed on the edges of both the nacelle flange and the tower flange. The laser alignment sensors are electrically connected to the control module and are used to detect the alignment deviation values ​​of the nacelle flange and the tower flange. The control module outputs an adjustment signal to the external hoisting equipment based on the deviation value, and drives the nacelle flange or the tower flange to move as a whole to eliminate the alignment deviation and ensure that the holes and grooves of the nacelle flange and the tower flange are coaxial.

[0038] Furthermore, the laser alignment sensor consists of at least three sets, evenly distributed along the flange circumference (at 120° intervals), with a detection deviation range of ±5mm, and the adjustment signal output by the control module has an accuracy of ±0.1mm; the taper of the docking ring is 1:5-1:10, and its height is not less than 1.2 times the depth of the central groove of the engine room flange.

[0039] The beneficial effects of this invention are as follows:

[0040] 1. This invention automatically completes the lowering and tightening of bolts through a bolt lowering and tightening unit, and uses a pressure sensor to verify the adhesion and insertion reaction force to ensure reliable installation. If the verification fails, the bolt release unit locks to prevent the bolt from falling off, and the rotation limit unit seals the hole and groove to prevent the fault from escalating, which greatly improves the safety of high-altitude operations and reduces manual intervention to improve efficiency.

[0041] 2. The wind turbine nacelle cover quick-connect installation component of the present invention not only seals the hole slot to prevent the fault from expanding when the bolt is inserted abnormally, but also restricts its circumferential rotation during the placement and lowering of the bolt, ensuring that the bolt angle is always correct, providing a stable foundation for intelligent wrench engagement, and avoiding the risk of bolt loosening and falling off.

[0042] 3. The wind turbine nacelle cover quick docking and installation component of the present invention allows the power unit to complete the "lowering-rotating-tightening" operation in a grouped cyclical sequence, adapting to the flange installation requirements of different numbers of bolts. The various processes are seamlessly connected. Combined with automated verification and limit protection, it significantly shortens the docking and installation cycle of the nacelle cover, taking into account both efficiency and reliability. Attached Figure Description

[0043] The present invention will be further described below with reference to the accompanying drawings;

[0044] Figure 1 This is a flowchart of the bolt installation control process of the present invention;

[0045] Figure 2 This is a three-dimensional structural view of the bolt release, bolt tightening, and power unit of the present invention;

[0046] Figure 3 This is a front sectional view of the present invention;

[0047] Figure 4 yes Figure 3 Enlarged view of point A in the middle;

[0048] Figure 5 This is a partial three-dimensional view of the structure in this invention;

[0049] Figure 6 This is a partial three-dimensional view of the structure in this invention.

[0050] In the diagram: 1. Nacelle flange; 11. Tower flange; 12. Nacelle; 2. Receiving ring; 21. Hexagonal through-slot; 22. Bolt; 23. Fixing column; 3. Electromagnetic layer; 31. Intelligent wrench; 4. Upper T-shaped limiting groove; 41. Lower T-shaped limiting groove; 42. Upper T-shaped limiting block; 43. Lower T-shaped limiting block; 5. Gear ring; 51. Rotating shaft; 52. Transmission gear; 53. First electric push rod; 54. Second electric push rod; 55. Arc-shaped block; 56. Extension column; 57. Strong magnetic attraction block; 6. Docking ring block. Detailed Implementation

[0051] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0052] Example 1

[0053] like Figures 1 to 6 As shown, the wind turbine nacelle cover quick-connect installation assembly of this embodiment mainly includes a nacelle flange 1, a tower flange 11, a nacelle body 12, a receiving ring 2, a bolt tightening and loosening unit, a control module, a power unit, a rotation limiting unit, a detachment limiting unit, and an image scanning sensor; (Reference) Figure 1 ).

[0054] Core structural connection: The top of the nacelle flange 1 is fixed to the nacelle body 12, and the bottom of the nacelle body 12 is fixed to the receiving ring 2 via the fixing column 23. The top of the receiving ring 2 is provided with a hexagonal through groove 21 that matches the head of the bolt 22, and the hexagonal through groove 21 corresponds to the position of the hole groove of the nacelle flange 1 and the tower flange 11.

[0055] Bolt lowering and tightening unit: Located above the receiving ring 2, it includes a strong electromagnetic block, a first electric push rod 53, a second electric push rod 54 and a smart wrench 31. A pressure sensor is embedded at the bottom of the strong electromagnetic block for lowering and tightening the bolt 22.

[0056] Limiting structure: The receiving ring 2 is equipped with a rotation limiting unit and a release limiting unit, both of which include a limiting block, an electromagnetic layer 3 and a return spring; the rotation limiting unit is set at the joint of the hole and groove between the nacelle flange 1 and the tower flange 11, and the release limiting unit is set at the outlet end of the hexagonal through groove 21; when the control module unlocks the release limiting unit, it only releases the release limiting unit of the hexagonal through groove 21 where the currently adsorbed bolt 22 is located, while the others remain locked;

[0057] This limiting structure includes a rotation limiting unit and a release limiting unit. The release limiting unit prevents the bolt 22 from falling off, while the rotation limiting unit can prevent the bolt 22 from falling into the flange hole groove under uncontrolled conditions. On the other hand, it can squeeze the bolt 22 to prevent a group of bolts 22 from being inserted into the hole groove at the same time. The operation of one bolt 22 may cause the other nearby bolts 22 to deflect at an angle or rotate due to weather conditions. As a result, the smart wrench 31 cannot be properly matched to the angle of the bolt 22 under the rotation of the toothed ring 5, so that the smart wrench 31 can more efficiently fit the bolt 22 and tighten it.

[0058] To ensure that the intelligent wrench 31 can accurately engage with the bolt 22 after rotating with the toothed ring 5, and to avoid jamming caused by circumferential angular offset of the bolt 22, the placement angle of the hexagonal bolt 22 and its mating relationship with the lower T-shaped limit block are further specified as follows:

[0059] The bolt 22 to be placed in the hexagonal through groove 21 of the receiving ring 2 adopts a regular hexagonal head structure. Among the six sides of its head, one side must be in a perpendicular fit with the end face of the corresponding lower T-shaped limiting block. The lower T-shaped limiting groove and the lower T-shaped limiting block are evenly distributed along the circumference of the outer wall of the receiving ring 2. The axis of each lower T-shaped limiting block coincides with the central axis of the corresponding hexagonal through groove 21 in the same radial plane of the receiving ring 2. That is, the center of a single hexagonal through groove 21, the center of the corresponding lower T-shaped limiting block and the center of the receiving ring 2 are collinear.

[0060] Through the aforementioned angle limitation and matching design, the circumferential angle of the hexagonal bolt 22 is uniformly fixed within the receiving ring 2. After the toothed ring 5 drives the intelligent wrench 31 to rotate at a preset angle, the socket can directly and precisely align and engage with the head of the bolt 22 without additional angle adjustment. This effectively improves the efficiency and accuracy of the bolt 22 tightening process and avoids socket jamming or bolt 22 damage caused by angle deviation.

[0061] Power unit: includes gear ring 5, rotating shaft 51, transmission gear 52 and servo motor. Gear ring 5 is fixed to the bottom of the compartment 12. The bottom end of rotating shaft 51 is fixed to transmission gear 52 that meshes with gear ring 5. Servo motor is installed at the top. Bolt release and bolt tightening unit is located at the bottom of gear ring 5 and adjusts the circumferential position as gear ring 5 rotates. An angle sensor is installed on the output shaft of servo motor to feed back the rotation angle to the control module.

[0062] Image scanning sensor: fixed to the top of the receiving ring 2 and facing the hexagonal through groove 21, it collects the position coordinates of the hexagonal through groove 21 and the distribution information of bolts 22 and transmits them to the control module. The control module groups the bolts 22 according to the rule that there is no overlap between adjacent groups and each group is diagonally symmetrical with the center of the engine room flange 1 as the origin of symmetry. Each group has 2-6 bolts 22 and they are evenly distributed along the circumference. The circumferential interval between adjacent groups is not less than 30°.

[0063] Control module: It pre-stores the hole and slot distribution map of the nacelle flange 1 and the tower flange 11, compares the bolt 22 position information collected by the image scanning sensor with the map, generates a bolt 22-hole and slot correspondence table, and drives the power unit to move the bolt loosening and tightening unit to the target hole and slot position; at the same time, it is electrically connected to the pressure sensor and the electromagnetic layer 3 to realize verification linkage control.

[0064] The main work of this embodiment is as follows: After the ground completes the fixing of the nacelle flange 1, the nacelle 12 and the receiving ring 2, the bolts 22 are placed into the hexagonal through slot 21, and the whole structure is hoisted into the air to prepare for docking with the tower flange 11; the image scanning sensor collects the position coordinates and distribution information of the bolts 22 in the hexagonal through slot 21 and transmits them to the control module; the control module groups the bolts 22 according to the collected information and generates a bolt 22-hole slot correspondence table in combination with the pre-stored hole and slot distribution map, and drives the power unit to move the bolt release and tightening unit to the top of the target hole and slot;

[0065] When the strong electromagnetic block attracts bolt 22, the pressure sensor detects the contact pressure. If the pressure reaches the standard (5-10N), the control module unlocks the corresponding release unit; if the pressure does not reach the standard, an alarm is triggered.

[0066] When the strong electromagnetic block drives the bolt 22 to be inserted into the slot, the pressure sensor detects the reaction force of the slot. If the reaction force is within the specified range (stable at 100-150N and lasting for ≥0.5 seconds), the bolt 22 is released. If the reaction force is not within the specified range, the first electric push rod 53 is controlled to lift in the reverse direction and an alarm is triggered. At the same time, the rotation limit unit is unlocked to seal the slot.

[0067] The toothed ring 5 drives the bolt release and tightening unit to perform a cyclical sequence of actions: "drive the first electric push rod 53 to synchronously lower the current group of diagonal bolts 22 → rotate the toothed ring 5 to the corresponding angle (equal to 360° divided by the total number of bolt groups 22, with the error corrected by the angle sensor feedback, and the correction accuracy ≤0.5°) → drive the second electric push rod 54 to synchronously tighten the group of bolts 22 → synchronously lower the subsequent group of diagonal bolts 22", thus completing the bolt 22 fixing of the flange connection.

[0068] In this embodiment, the entire process of bolt 22 installation is basically automated, forming a closed loop from grouping, positioning, adsorption, insertion to tightening, which greatly reduces manual intervention and lowers the difficulty of high-altitude operations;

[0069] The precise action of the limiting structure prevents bolt 22 from falling off or the slot from becoming blocked, and the dual verification of the pressure sensor ensures the reliability of adsorption and insertion, improving installation safety.

[0070] Bolts are installed symmetrically in groups of 22 to ensure uniform stress on the flange, reduce the risk of deformation, and ensure docking accuracy by combining precise positioning with the power unit.

[0071] Example 2

[0072] Based on the first embodiment, this embodiment adds an electromagnetic induction sensor, a laser alignment sensor, and a tapered docking ring block 6 to optimize and upgrade the system's accuracy and reliability.

[0073] The entire structure and functions of the first implementation method are retained.

[0074] A new electromagnetic induction sensor is installed on the outside of the receiving ring 2 and electrically connected to the control module. It detects the energization status of the electromagnetic layer 3 and feeds back the extension and retraction positions of the upper T-shaped limit block 42 and the lower T-shaped limit block 43 to the control module, thereby monitoring the action status of the limit structure in real time.

[0075] Laser alignment sensors: At least 3 sets are installed on the edges of both the nacelle flange 1 and the tower flange 11, evenly distributed along the flange circumference (120° interval), and electrically connected to the control module to detect the alignment deviation value of the two flanges (range ±5mm). The control module outputs an adjustment signal to the external hoisting equipment according to the deviation value, with an adjustment accuracy of ±0.1mm to ensure that the holes and grooves are coaxial.

[0076] Conical mating ring block 6: Fixed to the top center of the tower flange 11, it is conical with the tip pointing upwards, and is adapted to the central circular groove of the nacelle flange 1. The taper is 1:5-1:10, and the height is not less than 1.2 times the depth of the central circular groove of the nacelle flange 1, to assist in the initial alignment of the two flanges.

[0077] The working principle of this embodiment is as follows: During the hoisting process, the tapered docking ring block 6 at the top of the tower flange 11 is first inserted into the central circular groove of the nacelle flange 1 to achieve the initial coarse positioning of the two flanges.

[0078] The laser alignment sensor detects the alignment deviation between the nacelle flange 1 and the tower flange 11 and transmits it to the control module.

[0079] The control module outputs an adjustment signal to the external hoisting equipment based on the deviation value, driving the nacelle flange 1 or the tower flange 11 to move as a whole, eliminating the alignment deviation and ensuring that the two flange holes and grooves are coaxial.

[0080] The subsequent procedures for grouping, positioning, adsorption, insertion, tightening, and handling abnormalities of bolts 22 are the same as those in the first implementation method.

[0081] During the thrombus release process, the electromagnetic induction sensor detects the energization status of the electromagnetic layer 3 in real time and feeds back the extension and retraction position of the limit block to the control module. If the limit block does not move as expected, the control module will promptly alarm to indicate the fault.

[0082] In this embodiment, a new tapered docking ring block 6 and a laser alignment sensor are added to achieve dual alignment of "coarse positioning + fine adjustment". The coaxiality deviation of the flange hole groove is controlled within ±0.1mm, further improving the insertion accuracy of bolt 22.

[0083] Electromagnetic induction sensors monitor the movement of the limit structure in real time, detect faults in a timely manner and issue alarms, thereby avoiding installation accidents caused by limit structure failure and improving system reliability.

[0084] The entire process features high-precision automated control, adapting to the flange connection requirements of wind turbines of different specifications, expanding the system's applicability, and improving installation efficiency and quality consistency. The aforementioned front, back, left, right, top, and bottom refer to the figures in the instruction manual. Figure 1 Based on the perspective of the observer, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0085] In the description of this invention, it should be understood that the terms "center", "longitudinal", "lateral", "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. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0086] In light of current practical needs, the above-described embodiments of this invention are not limited to these specific implementations. Any changes made within the scope of knowledge possessed by those skilled in the art, without departing from the concept of this invention, still fall within the protection scope of this invention.

Claims

1. A quick-connect installation assembly for a wind turbine nacelle cover, characterized in that: It includes a nacelle flange (1), a tower flange (11), and a body (12) fixed to the top of the nacelle flange (1); the bottom of the body (12) is fixed with a receiving ring (2) by a fixing column (23), and the top of the receiving ring (2) is provided with a hexagonal through groove (21) adapted to the head of the bolt (22), and the hexagonal through groove (21) corresponds to the position of the hole groove of the nacelle flange (1) and the tower flange (11); The receiving ring (2) is provided with a bolt release and tightening unit, a control module and a power unit. The bolt release and tightening unit includes a strong electromagnetic block, a first electric push rod (53), a second electric push rod (54) and a smart wrench (31) for lowering and tightening the bolt (22). A pressure sensor is embedded at the bottom of the strong electromagnetic block. The receiving ring (2) is provided with a rotation limiting unit and a release limiting unit, the rotation limiting unit and the release limiting unit include a limiting block and an electromagnetic layer (3); the pressure sensor and the electromagnetic layer (3) are both electrically connected to the control module; The control module, pressure sensor, rotation limiting unit, and release limiting unit form a verification linkage: When the strong electromagnetic block adsorbs the bolt (22), the pressure sensor detects the contact pressure. If the pressure reaches the standard, the control module unlocks the release unit; if the pressure does not reach the standard, an alarm is triggered. When the strong electromagnetic block with bolt (22) is inserted into the slot, the pressure sensor detects the reaction force of the slot. If the reaction force is within the acceptable range, the bolt (22) is released and the rotation limit unit is unlocked to squeeze the bolt (22) to prevent it from rotating. If the reaction force is not within the acceptable range, the first electric push rod (53) is controlled to lift in the reverse direction and an alarm is triggered. At the same time, the rotation limit unit is unlocked to block the slot. When the electromagnetic layer (3) is energized, the adsorption limiting block retracts and unlocks; when the power is off, the limiting block extends and locks under the action of the reset spring. The limiting unit and the limiting rotation unit each include an upper T-shaped limiting groove (4) and a lower T-shaped limiting groove (41). The opposite side walls of a set of hexagonal through grooves (21) are provided with upper T-shaped limiting grooves (4). The lower side wall of the outer side wall of the receiving ring (2) is provided with a set of lower T-shaped limiting grooves (41). The inner walls of the upper T-shaped limiting grooves (4) and the lower T-shaped limiting grooves (41) are fixed with electromagnetic layers (3). The limiting block is composed of an upper T-shaped limiting block (42) and a lower T-shaped limiting block (43). The side walls of the electromagnetic layers (3) in the upper T-shaped limiting grooves (4) and the lower T-shaped limiting grooves (41) are fixed with the upper T-shaped limiting block (42) and the lower T-shaped limiting block (43) respectively by a reset spring. The cross section of the receiving ring (2) is inverted L-shaped. The upper T-shaped limiting block (42) is located above the lower T-shaped limiting block (43). The first electric push rod (53) is fixed to the bottom of the toothed ring (5), and the second electric push rod (54) is fixed to the bottom of the toothed ring (5) through a support plate; an arc-shaped block (55) is fixed to the bottom end of the first electric push rod (53), and the bottom of the arc-shaped block (55) is fixed to a strong electromagnetic block through a set of extension columns (56); the bottom of the second electric push rod (54) is fixed to the smart wrench (31); The first electric push rod (53) and the second electric push rod (54) are symmetrically distributed at intervals of 45°-60° along the circumference of the toothed ring (5) and are alternately distributed, respectively corresponding to the unloading and tightening processes; The toothed ring (5) drives the bolt release and tightening unit to perform a cyclical sequence of actions: "drive the first electric push rod (53) to simultaneously lower the current group of diagonal bolts (22) → the toothed ring (5) rotates to the corresponding angle → drive the second electric push rod (54) to simultaneously tighten the current group of diagonal bolts (22) → simultaneously lower the subsequent group of diagonal bolts (22)".

2. The wind turbine nacelle cover quick-connect installation assembly according to claim 1, characterized in that: The bonding pressure detected by the pressure sensor is 5-10N, which corresponds to the strong electromagnetic block and the head of the bolt (22) being completely bonded; bonding pressure <5-10N is not up to standard, which corresponds to the strong electromagnetic block and the head of the bolt (22) not being completely bonded. The reaction force of the slot is considered to be stable at 100-150N and last for ≥0.5 seconds, corresponding to the bolt (22) being fully inserted into the slot and the head being attached to the flange surface; if the reaction force is less than 100N, the insertion is not complete, and if the reaction force exceeds 150N and lasts for <0.5 seconds, it is considered stuck.

3. The wind turbine nacelle cover quick-connect installation assembly according to claim 1, characterized in that: The top of the receiving ring (2) is fixed with an image scanning sensor, and the image scanning sensor is set facing the hexagonal through slot (21). The image scanning sensor is used to collect the position coordinates of the hexagonal through slot (21) and the distribution information of the bolts (22) and transmit them to the control module. The control module groups the bolts (22) according to the rule that there is no overlap between adjacent groups and each group is diagonally symmetrical.

4. The wind turbine nacelle cover quick-connect installation assembly according to claim 3, characterized in that: The control module pre-stores the hole and slot distribution map of the engine room flange (1) and tower flange (11); the bolt (22) position information collected by the image scanning sensor is compared with the hole and slot distribution map to generate a bolt (22)-hole and slot correspondence table; the control module drives the power unit to move the bolt release and bolt tightening unit to the target hole and slot position based on the correspondence table.

5. The wind turbine nacelle cover quick-connect installation assembly according to claim 1, characterized in that: The power unit includes a gear ring (5), the bottom of the cabin (12) is fixedly connected to the gear ring (5), the top of the cabin (12) is rotatably connected to a rotating shaft (51) through a circular groove, a transmission gear (52) is fixedly connected to the bottom end of the rotating shaft (51), and the transmission gear (52) meshes with the gear ring (5), and a servo motor is provided on the top end; The bolt release and tightening unit is located at the bottom of the toothed ring (5) and its position is adjusted in the circumferential direction as the toothed ring (5) rotates. An angle sensor is installed on the output shaft of the servo motor and is electrically connected to the control module to provide feedback on the rotation angle of the bolt release and tightening unit.

6. The wind turbine nacelle cover quick-connect installation assembly according to claim 1, characterized in that: An electromagnetic induction sensor is installed on the outside of the receiving ring (2). The electromagnetic induction sensor is electrically connected to the control module and is used to detect the energization status of the electromagnetic layer (3) and to feed back the extension and retraction positions of the upper T-shaped limit block (42) and the lower T-shaped limit block (43) to the control module.

7. The wind turbine nacelle cover quick-connect installation assembly according to claim 1, characterized in that: A docking ring block (6) is fixedly connected to the center of the top of the tower flange (11). The docking ring block (6) is conical with its conical tip pointing upwards. The docking ring block (6) is compatible with the central circular groove of the nacelle flange (1).

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