A device for the removal of medium-sized equipment from a wind turbine nacelle

Abstract

The present application relates to wind turbine nacelle cabinet technical field, and disclose a kind of dismounting device for medium equipment in wind turbine nacelle cabinet, comprising: operating rod, universal ball hinge rotating seat, connecting seat and antiskid rubber handle. Operating rod is composed of first rod body, second rod body and third rod body, and the length is locked by positioning bolt and positioning hole. The outer end of third rod body is provided with universal ball hinge rotating seat, which is hingedly connected with universal ball body, and the top locking bolt drives the locking seat to descend, so that the arc wedge tooth is embedded into the arc wedge tooth groove on the surface of universal ball body. The connecting seat on the universal ball body is inserted with hexagonal hole barrel head through wedge-shaped clamping structure, and the operating rod is provided with antiskid rubber handle. When the device is locked, the angle locking torsional stiffness can be greatly improved, and the axial component force is generated on the wedge tooth surface to drive the displacement of connecting seat, which provides linkage trigger condition for gap elimination of barrel head insertion.

Description

Technical Field

[0001] This invention relates to the field of wind turbine nacelle cabinet technology, specifically to a disassembly and assembly device for medium-sized equipment inside a wind turbine nacelle cabinet. Background Technology

[0002] In the maintenance of medium-sized electrical equipment inside the wind turbine nacelle cabinet, bolt removal and installation tools are used to loosen and reinstall the equipment fixing bolts. The work is mostly carried out in narrow spaces such as the inside of the cabinet and the gaps between the equipment. The angle adjustment and locking performance of the tools and the reliability of the head connection directly affect the overall efficiency of the maintenance work and the stability of the equipment reinstallation.

[0003] Existing assembly and disassembly tools rely on the friction surface to press and tighten the universal ball joint for angle locking, which is prone to angular slippage and deflection during high-torque operations. Furthermore, the locking action only achieves single-angle fixation and cannot activate the front-end head connection structure for synergistic effect. The quick-connect structure of the head uses equal-width slots and clamps for insertion, resulting in a gap after insertion. This gap can lead to wobbling and loss during torque transmission, and eliminating the gap requires separate operation of the locking component, increasing the complexity of operations in confined spaces. Therefore, a disassembly and assembly device for medium-sized equipment inside wind turbine nacelles is proposed. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a disassembly and assembly device for medium-sized equipment inside a wind turbine nacelle cabinet, thereby solving the aforementioned technical problems of being unable to drive the front-end cylinder head connection structure to produce a synergistic effect and increasing the complexity of operation in confined spaces.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a disassembly and assembly device for medium-sized equipment inside a wind turbine nacelle cabinet, comprising: The control lever comprises a first rod body, a second rod body, and a third rod body. The second rod body is slidably adapted to the inner cavity of the first rod body, and the third rod body is slidably adapted to the inner cavity of the second rod body. Weight reduction grooves are provided on both sides of the first rod body, the second rod body, and the third rod body. The telescopic ends of the first rod body and the second rod body are threaded with positioning bolts, and positioning holes adapted to the positioning bolts are evenly provided on the upper part of the second rod body and the third rod body. The universal ball joint rotating seat is located at the outer end of the third rod. A universal ball is hinged to the center of the universal ball joint rotating seat. A lifting groove is vertically opened at the top of the inner cavity of the universal ball joint rotating seat. A locking bolt is threaded to the top of the universal ball joint rotating seat. A locking seat that is adapted to slide with the lifting groove is rotatably connected to the bottom of the locking bolt. The contact surface of the locking seat is adapted to the surface of the universal ball. Arc-shaped wedge-shaped engagement teeth are evenly arranged on the contact surface of the locking seat. Arc-shaped wedge-shaped tooth grooves that are adapted to the arc-shaped wedge-shaped engagement teeth are evenly opened on the surface of the universal ball. The connector is located on the surface of the universal ball. The center of the connector has a plug-in circular groove, and the inner circumferential surface of the plug-in circular groove has a wedge-shaped snap-fit ​​groove that is wider on the outside and narrower on the inside. The outer end face of the connector has a cylindrical head, and the inner end of the cylindrical head is fitted with a plug-in circular plate that matches the plug-in circular groove. The outer circumferential surface of the plug-in circular plate is fitted with snap-fit ​​joints that are wider at the root and narrower at the top and matched with the snap-fit ​​groove. The outer end face of the cylindrical head has a hexagonal hole, and the inner wall of the hexagonal hole is fitted with a magnetic positioning ring. The non-slip rubber grip is fitted onto the grip section of the operating lever. The two sides of the non-slip rubber grip are evenly provided with easy-to-remove protrusions, and a palm cushion is installed in the center of the non-slip rubber grip. The surface of the non-slip rubber grip is evenly provided with three-dimensional anti-slip texture, and the outer side of the non-slip rubber grip is provided with annular reinstallation smooth force control texture.

[0006] Select the corresponding cylindrical head according to the specifications of the bolts to be disassembled and assembled. Align the insertion round plate with the insertion round groove of the connector and insert it axially so that the snap-fit ​​connector is embedded in the corresponding snap-fit ​​groove, thus completing the initial quick-installation and fixing of the cylindrical head.

[0007] Based on the depth of the working space and the position of the bolts, pull the second and third rods axially, adjust the operating rod to the appropriate length, and then tighten the positioning bolts at the ends of the first and second rods respectively, so that the positioning bolts are embedded in the corresponding positioning holes, thus completing the length locking of the operating rod.

[0008] Align the hexagonal hole of the cylinder head with the target bolt, and guide the bolt into the hexagonal hole with the adsorption of the magnetic positioning ring to achieve the initial positioning of the bolt.

[0009] By manipulating the operating lever, the working angle is adjusted through the multi-directional rotation of the universal ball joint within the universal ball joint rotating seat. Once the angle matches the operational requirements, the locking bolt is tightened, pushing the locking seat downwards along the lifting groove. This causes the arc-shaped wedge-shaped meshing teeth to engage with the corresponding arc-shaped wedge-shaped tooth grooves, completing the rigid locking of the bending angle. During the locking process, the axially inclined wedge-shaped tooth surfaces press against each other, generating an axial component force. This pushes the universal ball joint to produce a slight axial displacement towards the cylinder head side along the reserved micro-movement gap. Simultaneously, it drives the connecting seat to move towards the cylinder head, causing the wedge-shaped inclined surface of the locking groove and the wedge-shaped inclined surface of the locking connector to slide relative to each other along the insertion axis and wedge tightly together, automatically eliminating the assembly gap of the cylinder head.

[0010] The operator holds the non-slip rubber handle, hooks their fingers onto the disassembly-friendly protrusion, and rotates the operating lever back and forth at a small angle to gradually loosen the bolts until they can be removed by hand. After removing the bolts, the disassembly of the equipment is complete, and the equipment is moved to an open area for maintenance.

[0011] After the equipment has been repaired, it is returned to its installation position inside the cabinet. The fixing bolts are initially screwed into the equipment mounting holes to achieve temporary positioning and fit of the equipment with the mounting surface.

[0012] Maintain or fine-tune the length and bending angle of the operating rod, align the hexagonal hole of the cylinder head with the bolt to be initially installed, and guide the bolt into the hexagonal hole through the magnetic positioning ring.

[0013] Tighten the locking bolt, and the operating angle is locked by the engagement of the arc-shaped wedge-shaped teeth of the locking seat with the arc-shaped wedge-shaped groove of the universal ball. At the same time, the axial displacement of the connecting seat is driven in conjunction, so that the snap-fit ​​groove and the snap-fit ​​joint are wedged together to eliminate the assembly play of the cylinder head.

[0014] The operator holds the non-slip rubber handle, ensuring their hand is aligned with the reinstallation control grooves. Apply torque smoothly and steadily, rotating the bolt back and forth at small angles to gradually and evenly tighten it until it meets installation requirements, completing the reinstallation of each bolt. Repeat the above steps to tighten all inner bolts. After tightening all inner bolts, loosen the locking bolt to release the angle lock, retract the operating lever to its shortest position, and store the device.

[0015] Preferably, the outer ports of the hexagonal hole are provided with storage slots on both sides, and the storage slots are designed symmetrically.

[0016] During the insertion or withdrawal of the bolt into the hexagonal hole, the mating component used to prevent loosening can be stored inside the storage groove to avoid the bolt's movement path. After the bolt is fully inserted into the hexagonal hole, the mating component can extend from the storage groove to form a lateral limiting and blocking effect on the removed bolt.

[0017] Preferably, the top and bottom of the inner cavity of the storage slot are slidably fitted with guide plates, and the side of the guide plates facing the hexagonal hole is equipped with an anti-detachment inclined plate.

[0018] When the bolt enters the hexagonal hole, it presses against the anti-detachment inclined plate, causing the guide plate to slide outward along the inner cavity of the receiving groove, thus retracting the anti-detachment inclined plate into the receiving groove. After the bolt is fully inserted, the anti-detachment inclined plate slides back to its original position with the guide plate towards the center of the hexagonal hole, thus blocking and limiting the bolt.

[0019] Preferably, the anti-detachment inclined plate is located at the outer port of the storage groove, and the outer guide inclined surface and the inner guide inclined surface of the anti-detachment inclined plate face the outer port and inner cavity of the hexagonal hole, respectively.

[0020] When the bolt is inserted into the hexagonal hole from the outer end, the bolt end first contacts the outer guide slope of the anti-detachment plate, gradually pushing the anti-detachment plate into the receiving groove along the slope, allowing the bolt to smoothly enter the hexagonal hole. After the bolt is fully inserted, the anti-detachment plate resets, its end face preventing the bolt from coming out. After the bolt separates from the connector, the anti-detachment plate confines the detached bolt within the hexagonal hole, preventing it from falling out. When the bolt is tightened to the connector, pulling the cylinder head outward causes the bolt head's edge to press against the inner guide slope of the anti-detachment plate, pushing the anti-detachment plate into the receiving groove, allowing the cylinder head to easily separate from the bolt.

[0021] Preferably, the top and bottom of the inner cavity of the storage slot are provided with a reset member horizontally, and the two ends of the reset member are in contact with the inner wall of the storage slot and the inner side of the anti-detachment inclined plate.

[0022] When the bolt moves into the receiving groove by pressing the anti-loosening inclined plate, the reset component undergoes elastic deformation and accumulates elastic force under the pressure of the anti-loosening inclined plate. After the bolt is fully inserted into the hexagonal hole, the reset component releases the elastic force and pushes the anti-loosening inclined plate to slide back to the center of the hexagonal hole, maintaining the limiting state of the bolt. The reset component includes a reset spring, etc.

[0023] Preferably, the inner wall of the storage groove and the inner side of the anti-detachment inclined plate are both provided with grooves, and both ends of the reset member are embedded in the grooves of the storage groove and the anti-detachment inclined plate.

[0024] During the compression and springback reset process, the two ends of the reset component are always fitted into the grooves corresponding to the receiving groove and the anti-detachment inclined plate, and deform synchronously with the extension and retraction of the anti-detachment inclined plate, without any positional displacement.

[0025] Preferably, the first rod and the second rod are cylindrical in shape, and the third rod is cylindrical in shape.

[0026] During the length adjustment process, the second rod slides along the cylindrical inner cavity of the first rod, and the third rod slides along the cylindrical inner cavity of the second rod, adjusting the overall length of the operating rod step by step. After the adjustment is in place, it is locked by the positioning structure.

[0027] Preferably, the top of the inner cavity of both the first rod and the second rod is provided with a groove laterally, and the grooves of the first rod and the second rod correspond to the positioning bolts.

[0028] When the positioning bolt is tightened to lock the length, the end of the positioning bolt passes through the rod wall and enters the groove area of ​​the inner cavity, embedding into the positioning structure of the corresponding rod, thus completing the position locking between the rods.

[0029] Preferably, the telescopic ends of the first rod and the second rod are each provided with a first screw hole, and the positioning bolt is threadedly connected to the first rod and the second rod through the first screw hole.

[0030] When adjusting the length of the rod, loosen the positioning bolt so that it retracts outward along the first screw hole, releasing the restriction on the inner rod. After the length is adjusted to the correct position, tighten the positioning bolt so that it screws inward along the first screw hole, with its end engaging the corresponding positioning hole in the inner rod, thus locking the position between the rods.

[0031] Preferably, the top of the universal ball joint rotary seat is provided with a second screw hole, and the locking bolt is threadedly connected to the universal ball joint rotary seat through the second screw hole.

[0032] When adjusting the bending angle, loosen the locking bolt so that it moves upward along the second screw hole, releasing the locking constraint on the universal ball. After the angle is adjusted to the correct position, tighten the locking bolt so that it moves downward along the second screw hole, pushing the locking structure to press the universal ball, thus completing the angle locking.

[0033] Compared with the prior art, the present invention provides a disassembly and assembly device for medium equipment inside a wind turbine nacelle cabinet, which has the following beneficial effects: This device is used for disassembling and assembling medium-sized equipment in wind turbine nacelles. When the locking bolt pushes the locking seat down along the lifting groove to lock the universal ball, the arc-shaped wedge-shaped meshing teeth are embedded in the arc-shaped wedge-shaped tooth groove to form a mechanical mesh, which greatly improves the torsional stiffness of the angle locking. At the same time, the wedge-shaped tooth surface generates an axial component force to drive the connecting seat to move, providing a linkage trigger condition for the cylinder head insertion gap elimination.

[0034] The snap-fit ​​groove and snap-fit ​​connector adopt a wedge-shaped adaptation structure. When the connecting seat moves axially with the universal ball, the wedge-shaped mating surfaces slide relative to each other and automatically eliminate the insertion gap. This enhances the stability of the cylinder head connection without additional locking operations, and improves the smoothness of torque transmission and operational reliability.

[0035] The first, second, and third rods are nested and slide together, and the length can be adjusted and locked securely by the cooperation of positioning bolts and positioning holes. The weight-reducing grooves on both sides of the rods can reduce the overall weight while ensuring structural strength, making them suitable for working in confined spaces of different depths.

[0036] The non-slip rubber grip features a three-dimensional anti-slip texture, combined with effortless disassembly protrusions and smooth reassembly force control textures, adapting to the different force requirements of disassembly and reassembly. The palm cushioning pad disperses hand pressure, and the magnetic positioning ring assists in bolt alignment, improving comfort and accuracy when working in confined spaces. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall contracted structure of the present invention; Figure 3 This is a schematic diagram of the structure of the operating lever of the present invention; Figure 4 This is a cross-sectional schematic diagram of the internal structure of the rotating seat of the present invention; Figure 5 This is a schematic diagram of the separation structure of the cylinder head and the connecting seat of the present invention; Figure 6 This is a schematic cross-sectional view of the outer port of the cylinder head of the present invention.

[0038] In the diagram: 1. Operating lever; 2. First lever body; 3. Second lever body; 4. Third lever body; 5. Weight reduction groove; 6. Positioning bolt; 7. Positioning hole; 8. Universal ball joint rotating seat; 9. Universal ball; 10. Lifting groove; 11. Locking bolt; 12. Locking seat; 13. Arc-shaped wedge-shaped engagement teeth; 14. Arc-shaped wedge-shaped tooth groove; 15. Connecting seat; 16. Insertion round groove; 17. Snap-fit ​​groove; 18. Sleeve head; 19. Insertion round plate; 20. Snap-fit ​​connector; 21. Hexagonal hole; 22. Magnetic positioning ring; 23. Storage groove; 24. Guide plate; 25. Anti-detachment inclined plate; 26. Reset component; 27. Anti-slip rubber grip; 28. Disassembly-saving protrusion; 29. ​​Palm cushioning pad. Detailed Implementation

[0039] This invention provides a technical solution: a disassembly and assembly device for medium-sized equipment inside a wind turbine nacelle cabinet, comprising: (See attached diagram) Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 The control lever 1, and the first rod body 2, the second rod body 3 and the third rod body 4 that make up the control lever 1, wherein the second rod body 3 is slidably adapted to the inner cavity of the first rod body 2, the third rod body 4 is slidably adapted to the inner cavity of the second rod body 3, and weight reduction grooves 5 are provided on both sides of the first rod body 2, the second rod body 3 and the third rod body 4, and the telescopic ends of the first rod body 2 and the second rod body 3 are threadedly connected with positioning bolts 6, and positioning holes 7 that are adapted to the positioning bolts 6 are evenly provided on the upper part of the second rod body 3 and the third rod body 4; The universal ball joint rotating seat 8 is located at the outer end of the third rod body 4, and the center of the universal ball joint rotating seat 8 is hinged to a universal ball 9. A lifting groove 10 is vertically opened at the top of the inner cavity of the universal ball joint rotating seat 8. A locking bolt 11 is threadedly connected to the top of the universal ball joint rotating seat 8, and a locking seat 12 that is rotatably connected to the bottom of the locking bolt 11 and is adapted to slide with the lifting groove 10. The contact surface of the locking seat 12 is adapted to the surface of the universal ball 9, and arc-shaped wedge-shaped engagement teeth 13 are evenly arranged on the contact surface of the locking seat 12. Arc-shaped wedge-shaped tooth grooves 14 that are adapted to the arc-shaped wedge-shaped engagement teeth 13 are evenly opened on the surface of the universal ball 9. A connecting seat 15 is provided on the surface of the universal ball 9. A plug-in circular groove 16 is provided in the center of the connecting seat 15. A wedge-shaped snap-fit ​​groove 17 with a wider outer side and a narrower inner side is evenly provided on the inner circumferential surface of the plug-in circular groove 16. A cylindrical head 18 is provided on the outer end face of the connecting seat 15. A plug-in circular plate 19 that is adapted to the plug-in circular groove 16 is installed on the inner end of the cylindrical head 18. A snap-fit ​​connector 20 with a wider root and a narrower top that is adapted to the snap-fit ​​groove 17 is evenly installed on the outer circumferential surface of the plug-in circular plate 19. A hexagonal hole 21 is provided on the outer end face of the cylindrical head 18. A magnetic positioning ring 22 is embedded in the inner wall of the hexagonal hole 21. The anti-slip rubber grip 27 is fitted onto the grip section of the operating lever 1. The anti-slip rubber grip 27 has evenly distributed disassembly-friendly protrusions 28 on both sides, and a palm cushion 29 is installed in the center of the anti-slip rubber grip 27. The surface of the anti-slip rubber grip 27 is evenly distributed with three-dimensional anti-slip textures, and the outer side of the anti-slip rubber grip 27 has annular reinstallation smooth force control textures.

[0040] The operating lever 1 adopts a multi-section nested telescopic structure, which can flexibly adjust the overall length according to the depth of the working space. Combined with the multi-degree-of-freedom bending structure formed by the universal ball 9 and the universal ball hinge rotating seat 8, it can flexibly extend into the equipment gaps, cabinet corners and other hidden narrow points inside the cabinet, adapting to bolt disassembly and assembly operations in different directions, effectively avoiding scratching the equipment and surrounding components during operation.

[0041] By engaging the arc-shaped wedge-shaped meshing teeth 13 at the bottom of the locking seat 12 with the arc-shaped wedge-shaped grooves 14 on the surface of the universal ball 9, the traditional friction locking is upgraded to a mechanical meshing locking, which greatly improves the torsional load-bearing capacity after angle locking. No angle slippage will occur during high-torque disassembly and assembly operations, ensuring stable torque transmission and improving the stability and safety of the operation process.

[0042] The quick-release plug-in structure enables rapid replacement of the cylinder head 18, quickly adapting to the disassembly and assembly needs of bolts of different specifications. The snap-fit ​​groove 17 and the snap-fit ​​connector 20 adopt a wedge-shaped fit design, which can simultaneously achieve wedge tightening and gap elimination during angle locking. This eliminates assembly gaps without additional operation steps, making torque transmission smoother, effectively preventing the cylinder head 18 from shaking or falling off, improving operational reliability, and simplifying the operation process in confined spaces, thereby improving work efficiency.

[0043] The anti-slip rubber grip 27 integrates disassembly-saving protrusions 28 and reassembly-smoothing force control grooves. During disassembly, the lever arm amplification effect reduces the difficulty of exerting force, alleviating the operator's workload. During reassembly, it allows for precise control of torque and rotation speed, ensuring even bolt tightening, preventing bolt stripping or equipment misalignment, and guaranteeing a snug fit and stable fixation after reassembly. The palm cushion 29 distributes palm pressure, relieving hand fatigue during prolonged work.

[0044] Weight-reduction grooves 5 are formed on the surfaces of the first rod 2, the second rod 3, and the third rod 4 to reduce the overall weight of the device while ensuring structural strength. The integrated portable structure makes it easy for maintenance personnel to carry and move around in the cabinet. The device has a high degree of modularity, vulnerable parts can be replaced individually, daily maintenance is simple, and maintenance costs are low.

[0045] Please see Figure 6 The hexagonal hole 21 has storage slots 23 on both sides of its outer port, and the storage slots 23 are symmetrically designed.

[0046] The storage slot 23 adopts a symmetrical layout, which can make the limiting force on both sides of the bolt even and avoid the bolt being biased due to force on one side. At the same time, it provides a regular receiving space for the anti-loosening component, ensuring smooth extension and retraction of the component and not interfering with the normal insertion and removal of the bolt.

[0047] The top and bottom of the inner cavity of the storage slot 23 are slidably fitted with guide plates 24, and the side of the guide plate 24 facing the hexagonal hole 21 is fitted with an anti-detachment inclined plate 25.

[0048] The sliding fit between the guide plate 24 and the storage groove 23 provides stable guidance for the extension and retraction of the anti-detachment inclined plate 25, avoids the anti-detachment inclined plate 25 from deviating and getting stuck, ensures that the extension and retraction of the anti-detachment inclined plate 25 is smooth and stable, and improves the operational reliability of the anti-detachment structure.

[0049] The anti-detachment inclined plate 25 is located at the outer port of the storage groove 23, and the outer guide inclined surface and the inner guide inclined surface of the anti-detachment inclined plate 25 face the outer port and the inner cavity of the hexagonal hole 21, respectively.

[0050] The inclined surface design of the anti-loosening plate 25 allows it to automatically retract during bolt insertion, eliminating the need for additional operation and making the process convenient. Located at the outer end, the anti-loosening plate 25 effectively blocks the bolt at the point where it is most likely to come loose, providing a direct and reliable anti-loosening effect.

[0051] The top and bottom of the inner cavity of the storage slot 23 are horizontally provided with reset members 26, and the two ends of the reset members 26 are in contact with the inner wall of the storage slot 23 and the inner side of the anti-detachment inclined plate 25.

[0052] The reset component 26 provides a continuous reset driving force for the anti-detachment ramp 25, ensuring that the anti-detachment ramp 25 can automatically reset to the limit position after the bolt is fully inserted, without manual intervention. The horizontally arranged reset component 26 is subjected to force in the same direction as the sliding direction of the anti-detachment ramp 25, resulting in high transmission efficiency and stable reset action.

[0053] The inner wall of the storage groove 23 and the inner side of the anti-detachment inclined plate 25 are both provided with grooves, and both ends of the reset member 26 are embedded in the grooves of the storage groove 23 and the anti-detachment inclined plate 25.

[0054] The groove structure can form a positioning constraint on both ends of the reset component 26, preventing the reset component 26 from shifting or falling off during the extension and retraction process, ensuring the stable transmission of elastic force, improving the assembly firmness and operational stability of the reset structure, and reducing the risk of component loosening and failure.

[0055] Please see Figure 3 The first rod 2 and the second rod 3 are cylindrical in shape, and the third rod 4 is cylindrical in shape.

[0056] The cylindrical first rod 2 and second rod 3 provide complete circumferential wrapping and sliding guidance for the nested rods, ensuring high nesting precision and smooth rod extension and retraction. The cylindrical third rod 4 has good compatibility with the cylindrical inner cavity, with uniform fitting clearance. After locking, the overall structure has better torsional and bending strength, ensuring stable torque transmission.

[0057] The top of the inner cavity of both the first rod 2 and the second rod 3 is provided with a groove in the horizontal direction, and the grooves of the first rod 2 and the second rod 3 correspond to the positioning bolt 6.

[0058] The groove at the top of the inner cavity provides space for the end of the positioning bolt 6 to be received and aligned, which facilitates the precise embedding of the positioning bolt 6 into the positioning structure. At the same time, it can prevent the end of the positioning bolt 6 from hitting the surface of the inner cavity rod, protect the inner wall of the rod, and improve the smoothness and positioning accuracy of the locking operation.

[0059] Both the telescopic ends of the first rod 2 and the second rod 3 are provided with first screw holes, and the positioning bolt 6 is threadedly connected to the first rod 2 and the second rod 3 through the first screw holes.

[0060] The threaded engagement between the first screw hole and the positioning bolt 6 is simple and reliable, allowing for flexible unlocking and locking of the rod length through a tightening operation, making it convenient to use. The self-locking characteristic of the threaded connection ensures that it is not easily loosened after locking, improving the stability of the rod length lock.

[0061] Please see Figure 4 The top of the universal ball joint swivel seat 8 is provided with a second screw hole, and the locking bolt 11 is threadedly connected to the universal ball joint swivel seat 8 through the second screw hole.

[0062] The second screw hole engages with the vertical thread of the locking bolt 11, converting the tightening action into a vertical lifting displacement of the locking structure. The transmission is smooth and the locking force is controllable. The threaded structure has self-locking capability, maintaining a stable locking pressure after locking, and is not prone to loosening due to operational vibration, ensuring the reliability of angle locking.

[0063] This solution: This device is supplemented with a protective sleeve for the cylinder head. The protective sleeve is a flexible insulating sleeve that is fitted onto the outer port of the cylinder head 18 in the retracted state. It is installed by an interference fit and can protect the precision components inside the hexagonal hole 21, while preventing the edges and corners of the cylinder head 18 from scratching surrounding equipment and components.

[0064] Before operation, the maintenance personnel take out the device in its stored state, remove the protective sleeve of the cylinder head 18 from the outer port of the cylinder head 18, select the corresponding cylinder head 18 according to the specifications of the bolts to be disassembled and installed, align the insertion round plate 19 with the insertion round groove 16 of the connecting seat 15 and insert it axially, so that the snap-fit ​​connector 20 is embedded in the corresponding snap-fit ​​groove 17, and complete the initial quick installation and fixing of the cylinder head 18.

[0065] Based on the depth of the working space and the position of the bolt, pull the second rod 3 and the third rod 4 axially, adjust the operating rod 1 to the appropriate length, and then tighten the positioning bolts 6 at the ends of the first rod 2 and the second rod 3 respectively, so that the positioning bolts 6 are embedded in the corresponding positioning holes 7, thus completing the length locking of the operating rod 1. The front end of the device is inserted into the equipment gap area inside the cabinet. The hexagonal hole 21 of the cylinder head 18 is aligned with the target bolt. With the adsorption of the magnetic positioning ring 22, the bolt is guided to move into the hexagonal hole 21. After the bolt end contacts the outer guide slope of the anti-detachment inclined plate 25, it pushes the anti-detachment inclined plate 25 along the inclined surface, causing the guide plate 24 to slide outward along the receiving groove 23. At the same time, the compression reset member 26 produces elastic deformation, causing the anti-detachment inclined plate 25 to retract into the receiving groove 23 to avoid the movement path of the bolt. After the bolt is completely inside the hexagonal hole 21, the reset member 26 releases its elastic force to push the anti-detachment inclined plate 25 to slide back to the center of the hexagonal hole 21 along with the guide plate 24, forming a lateral limiting block for the bolt and completing the initial positioning of the bolt.

[0066] By manipulating the operating lever 1, the working angle is adjusted through the multi-directional rotation of the universal ball joint 9 within the universal ball joint rotating seat 8. Once the angle matches the working requirements, the locking bolt 11 is tightened, pushing the locking seat 12 downwards along the lifting groove 10. This causes the arc-shaped wedge-shaped meshing teeth 13 to engage with the corresponding arc-shaped wedge-shaped tooth groove 14, completing the rigid locking of the bending angle. During the locking process, the component force of the wedge-shaped tooth surface causes the universal ball joint 9 to produce a slight axial displacement, simultaneously driving the connecting seat 15 to move towards the cylinder head 18. This causes the wedge-shaped inclined surface of the locking groove 17 to wedge tightly with the wedge-shaped inclined surface of the locking connector 20, automatically eliminating the assembly gap of the cylinder head 18.

[0067] The operator holds the non-slip rubber handle 27, with their fingers gripping the disassembly-friendly protrusion 28, and rotates the operating lever 1 back and forth at a small angle, causing the bolt to rotate continuously, gradually loosening the bolt until it is completely separated from the equipment's connecting base. After the bolt is separated, it is limited and supported inside the hexagonal hole 21 by the anti-detachment inclined plate 25, and moved out of the work space along with the device to prevent the bolt from falling into the equipment gaps and causing loss or equipment malfunction. After completing the disassembly of the corresponding bolt, the above alignment, locking, and tightening operations are repeated. After all the internal fixing bolts are removed, the equipment is moved out of the cabinet to an open area for maintenance.

[0068] After the equipment maintenance is completed, the equipment is smoothly reset to its installation position inside the cabinet. The fixing bolts are initially screwed into the equipment mounting holes to achieve temporary positioning and fit with the mounting surface. Maintain or finely adjust the length and bending angle of the operating lever 1, align the hexagonal hole 21 of the cylinder head 18 with the initially installed bolt, and guide the bolt through the magnetic positioning ring 22 to push the anti-detachment inclined plate 25 backward and into the hexagonal hole 21. The anti-detachment inclined plate 25 is reset under the elastic force of the reset component 26 to form a lateral limit.

[0069] Tighten the locking bolt 11. The arc-shaped wedge-shaped meshing teeth 13 of the locking seat 12 engage with the arc-shaped wedge-shaped grooves 14 of the universal ball 9 to lock the operating angle. At the same time, the connecting seat 15 is moved axially, causing the locking groove 17 and the locking connector 20 to wedge tightly against each other, eliminating the assembly play in the cylinder head 18. The operator holds the non-slip rubber handle 27, with their hand in contact with the reinstallation smooth control groove, and smoothly applies torque to make small-angle reciprocating rotations, causing the bolt to rotate continuously and smoothly, gradually and evenly tightening the bolt to meet the installation requirements, completing the reinstallation of the corresponding bolt.

[0070] Repeat the above alignment, locking, and tightening operations. After tightening all the inner bolts, loosen the locking bolt 11 to release the angle lock, pull the device outward to separate the cylinder head 18 from the bolt, retract the operating lever 1 to its shortest position, reattach the cylinder head protective sleeve to the outer port of the cylinder head 18, and store the device in the designated tool storage location. During routine maintenance, regularly apply grease to the hinge parts of the universal ball joint swivel seat 8 to ensure smooth operation of all rotating parts. Regularly check the elasticity of vulnerable components such as the reset component 26; if performance failure occurs, replace the corresponding component individually.

Claims

1. A disassembly and assembly device for medium-sized equipment inside a wind turbine nacelle cabinet, characterized in that, include: The operating lever (1), and the first rod body (2), the second rod body (3) and the third rod body (4) that make up the operating lever (1), and the ends of the first rod body (2) and the second rod body (3) are connected with positioning bolts (6), and positioning holes (7) are opened on the upper part of the second rod body (3) and the third rod body (4). Universal ball joint swivel seat (8) is located at the outer end of the third rod (4), and a universal ball (9) is hinged to the center of the universal ball joint swivel seat (8). A lifting groove (10) is provided in the inner cavity of the universal ball joint swivel seat (8). A locking bolt (11) is threaded to the top of the universal ball joint swivel seat (8), and a locking seat (12) is connected to the bottom of the locking bolt (11). An arc-shaped wedge-shaped meshing tooth (13) is provided on the contact surface of the locking seat (12), and an arc-shaped wedge-shaped tooth groove (14) is provided on the surface of the universal ball (9). A connecting seat (15) is provided on the surface of the universal ball (9), and a plug-in circular groove (16) is provided in the center of the connecting seat (15), and a snap-fit ​​groove (17) is provided on the inner circumferential surface of the plug-in circular groove (16). A cylindrical head (18) is provided on the outer end face of the connecting seat (15), and a plug-in circular plate (19) is installed on the inner end of the cylindrical head (18). A snap-fit ​​connector (20) is installed on the outer circumferential surface of the plug-in circular plate (19), and a hexagonal hole (21) is provided on the outer end face of the cylindrical head (18). A magnetic positioning ring (22) is embedded in the inner wall of the hexagonal hole (21). A non-slip rubber grip (27) is fitted onto the grip section of the operating lever (1). The non-slip rubber grip (27) has evenly distributed disassembly-saving protrusions (28) on both sides, and a palm cushion (29) is installed in the center of the non-slip rubber grip (27). The surface of the non-slip rubber grip (27) is provided with three-dimensional non-slip texture, and the outer side of the non-slip rubber grip (27) is provided with reinstallation smooth force control texture.

2. The disassembly and assembly device for medium-sized equipment inside a wind turbine nacelle cabinet according to claim 1, characterized in that: The hexagonal hole (21) has storage slots (23) on both sides of its outer port, and the storage slots (23) are symmetrically designed.

3. A disassembly and assembly device for medium-sized equipment inside a wind turbine nacelle cabinet according to claim 2, characterized in that: The top and bottom of the inner cavity of the storage slot (23) are slidably fitted with guide plates (24), and the side of the guide plate (24) facing the hexagonal hole (21) is fitted with an anti-detachment inclined plate (25).

4. A disassembly and assembly device for medium-sized equipment inside a wind turbine nacelle cabinet according to claim 3, characterized in that: The anti-detachment inclined plate (25) is located at the outer port of the storage groove (23), and the outer guide inclined surface and the inner guide inclined surface of the anti-detachment inclined plate (25) face the outer port and inner cavity of the hexagonal hole (21) respectively.

5. A disassembly and assembly device for medium-sized equipment inside a wind turbine nacelle according to claim 4, characterized in that: The top and bottom of the inner cavity of the storage groove (23) are both horizontally provided with reset members (26), and the two ends of the reset members (26) are in contact with the inner wall of the storage groove (23) and the inner side of the anti-detachment inclined plate (25).

6. A disassembly and assembly device for medium-sized equipment inside a wind turbine nacelle cabinet according to claim 5, characterized in that: The inner wall of the storage groove (23) and the inner side of the anti-detachment inclined plate (25) are both provided with grooves, and both ends of the reset piece (26) are embedded in the grooves of the storage groove (23) and the anti-detachment inclined plate (25).

7. A disassembly and assembly device for medium-sized equipment inside a wind turbine nacelle cabinet according to claim 1, characterized in that: The first rod (2) and the second rod (3) are cylindrical in shape, and the third rod (4) is cylindrical in shape.

8. A disassembly and assembly device for medium-sized equipment inside a wind turbine nacelle cabinet according to claim 7, characterized in that: The top of the inner cavity of the first rod (2) and the second rod (3) are both provided with grooves in the horizontal direction, and the grooves of the first rod (2) and the second rod (3) correspond to the positioning bolts (6).

9. A disassembly and assembly device for medium-sized equipment inside a wind turbine nacelle cabinet according to claim 1, characterized in that: The first rod (2) and the second rod (3) are provided with first screw holes at their telescopic ends, and the positioning bolt (6) is threadedly connected to the first rod (2) and the second rod (3) through the first screw holes.

10. A disassembly and assembly device for medium-sized equipment inside a wind turbine nacelle according to claim 1, characterized in that: The top of the universal ball joint rotating seat (8) is provided with a second screw hole, and the locking bolt (11) is threadedly connected to the universal ball joint rotating seat (8) through the second screw hole.

Images