An arc-shaped fitting type high-altitude heat preservation box for wind power blade maintenance

Abstract

This invention discloses an arc-shaped, fitted, high-altitude insulated box for wind turbine blade maintenance, relating to the field of wind power equipment manufacturing technology. It aims to solve the technical problem of difficulty in carrying out maintenance work on wind turbine blades in cold, high-altitude regions during winter. The box includes a housing with an operating chamber, a heating chamber, and an equipment chamber inside. An adsorption assembly is arranged in the equipment chamber, comprising multiple main suction cups arranged on the outer side wall of the equipment chamber. A driving assembly is arranged on the top of the box, and a windproof assembly is arranged at the output end of the driving assembly. The windproof assembly includes a fixing plate and a fixing frame connected to the outer side wall of the box. Multiple fixing cylinders are arranged on the side wall of the fixing plate, penetrating the side wall of the fixing frame. Wind deflectors are slidably arranged on the fixing cylinders. This invention has the advantage that during wind turbine blade maintenance in cold, high-altitude regions during winter, maintenance personnel can perform maintenance operations in a stable, constant-temperature environment while resisting interference from high-altitude crosswinds.

Description

Technical Field

[0001] This invention relates to the field of wind power equipment manufacturing technology, and more specifically, to an arc-shaped fitting high-altitude insulation box for wind turbine blade maintenance. Background Technology

[0002] In the field of wind power equipment manufacturing, wind turbine blades, as the core components of wind turbine generators, are exposed to the outdoor natural environment for extended periods. They are susceptible to complex conditions such as strong winds, dust storms, temperature differences, rain, and snow, making them prone to malfunctions such as skin cracking, adhesive layer detachment, and surface wear. Failure to repair these issues promptly will directly impact the generator's power generation efficiency and operational safety. This is especially true in cold, high-altitude regions during winter, where not only are temperatures low and diurnal temperature variations significant, but strong crosswinds and frequent gusts at high altitudes also present numerous challenges for high-altitude maintenance of wind turbine blades.

[0003] Currently, high-altitude maintenance of wind turbine blades mostly employs a suspended basket method, where maintenance personnel are suspended in the basket at the location of the blade fault to perform operations. However, this method lacks dedicated insulation and protection facilities, making maintenance personnel susceptible to frostbite and reduced operational flexibility in frigid environments. Furthermore, the bonding and curing processes in wind turbine blade maintenance have strict temperature requirements; low temperatures significantly reduce the curing efficiency and bonding strength of adhesives, leading to compromised maintenance quality. Additionally, in the unobstructed working environment at high altitudes, strong crosswinds directly impact the maintenance area, interfering with personnel's actions and increasing safety risks. In summary, existing high-altitude maintenance methods for wind turbine blades are unsuitable for the harsh conditions of high-altitude, frigid regions during winter, resulting in poor working conditions, low maintenance efficiency, unreliable maintenance quality, and low operational safety. Therefore, we propose an arc-shaped, fitted high-altitude insulated box for wind turbine blade maintenance. Summary of the Invention

[0004] The purpose of this invention is to provide an arc-shaped, fitted high-altitude insulation box for wind turbine blade maintenance, in order to solve the technical problem that it is difficult to carry out maintenance work on wind turbine blades in cold and high-altitude areas during winter.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an arc-shaped, fitted high-altitude insulation box for wind turbine blade maintenance, comprising a box body, wherein an operating chamber, a heating chamber, and an equipment chamber are arranged in the inner cavity of the box body; a heating temperature control unit is arranged in the inner cavity of the heating chamber; the operating chamber and the heating chamber are connected through multiple heat conduction holes; an adsorption assembly is arranged in the equipment chamber, the adsorption assembly including multiple main suction cups arranged on the outer side wall of the equipment chamber, and the box body can be adsorbed and fixed to the side wall of the wind turbine blade through the multiple main suction cups; the top of the box body is covered with... The enclosure is equipped with a drive assembly, and a windproof assembly is arranged at the output end of the drive assembly. There are two sets of windproof assemblies, which are symmetrically distributed on both sides of the enclosure. Each windproof assembly includes a fixing plate and a fixing frame connected to the outer wall of the enclosure. Multiple fixing cylinders are arranged on the side wall of the fixing plate, and the fixing cylinders penetrate the side wall of the fixing frame. A wind deflector is slidably arranged on the fixing cylinder. The drive assembly can control the wind deflector to slide along the axial direction of the fixing cylinder. When the wind deflector slides out, it can form an enclosed shielding state for the operating area.

[0006] Preferably, the top of the box is connected to an external hoisting device via ropes to enable the box to be raised and lowered at high altitudes; the outer wall of the box is also provided with a tool storage box, sleeves and observation windows, and the inner cavity of the tool storage box is separated from the operating room by an insulated door.

[0007] Preferably, the adsorption assembly further includes a first vacuum pump arranged in the equipment room, the suction end of the first vacuum pump being connected to the main suction cup through an air extraction pipe; the outer side wall of the equipment room is an arc-shaped curved surface structure, and the multiple main suction cups are spatially distributed along the curvature direction of the arc-shaped curved surface structure.

[0008] Preferably, the drive assembly includes a motor and a gear set arranged on the top of the housing, the output end of the motor is connected to a drive gear, the output end of the drive gear is connected to a bevel gear through the gear set, and a lead screw is rotatably arranged on the side wall of the fixed frame, with the bevel gear and the lead screw coaxially connected.

[0009] Preferably, a drive block is connected to the side wall of the wind deflector, the drive block is movably sleeved on the lead screw, and the inner circumferential wall of the drive block is threadedly engaged with the lead screw to form a linear movement structure driven by the lead screw.

[0010] Preferably, a plurality of adapting blocks are slidably arranged in the inner cavity of the wind deflector, and the plurality of adapting blocks are stacked vertically, with each pair of adapting blocks slidingly engaged; wherein, the ends of the adapting blocks are connected to the side wall of the inner cavity of the wind deflector via elastic springs, and when the wind deflector slides forward along the axial direction of the fixed cylinder, the plurality of adapting blocks contact the side wall of the wind turbine blade, and each adapting block can adaptively compress the elastic spring and adjust its extension length according to the actual curvature of the wind turbine blade.

[0011] Preferably, the inner wall of the wind deflector is provided with a plurality of semi-circular sliding grooves, and the side wall of the adapting block is integrally formed with a semi-circular protrusion, the semi-circular protrusion being slidably arranged in the semi-circular sliding groove.

[0012] Preferably, the inner cavity of the adapting block is provided with an airflow channel. One end of the adapting block is detachably connected to a secondary suction cup, and the other end is detachably connected to an air pipe. The air pipe is movably arranged in the inner cavity of the fixed cylinder. The end of the air pipe is connected to a piston head, which is tightly fitted with the inner peripheral wall of the fixed cylinder to form a piston-type sliding fit structure that can reciprocate along the axial direction of the fixed cylinder. A second vacuum pump is also arranged in the equipment chamber. The suction end of the second vacuum pump is connected to the inner cavity of the fixed plate through a first pipe. The inner cavity of the fixed plate is connected to the inner cavity of the fixed plate of another set of windproof components through a second pipe. The inner cavity of the fixed plate is connected to the inner cavity of the fixed cylinder through a vacuum solenoid valve. The inner cavity of the fixed cylinder is connected to the inner cavity of the air pipe through the inner cavity of the piston head. The inner cavity of the air pipe is connected to the inner cavity of the secondary suction cup through the airflow channel.

[0013] Preferably, the side wall of the semi-arc protrusion on the other side wall of the adaptation block has a sliding chamber, which is connected to the airflow channel through a piston chamber; a slide is slidably arranged in the sliding chamber, a first toothed plate is connected to the top of the slide, a locking plate is arranged in the inner cavity of the slide, and a toothed opening is arranged on the side wall of the locking plate; a piston plate is slidably arranged in the piston chamber, the side wall of the piston plate is connected to the inner side wall of the piston chamber through a return spring, and a second toothed plate is connected to the other side wall of the piston plate; a transmission gear is rotatably arranged in the inner side wall of the sliding chamber, the transmission gear is arranged between the first toothed plate and the second toothed plate, and forms a meshing connection with the first toothed plate and the second toothed plate respectively; a groove is opened in the inner side wall of the semi-arc sliding groove of the wind deflector, and a toothed opening is arranged in the inner side wall of the groove, and the toothed opening can form a meshing connection with the toothed opening.

[0014] Preferably, the inner sidewall of the carriage is connected to a plurality of slide rods, the locking plate is slidably arranged on the slide rods, and the tips of the first tooth and the second tooth are both flat and pointed with the same structure.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. This invention designs an arc-shaped, fitted high-altitude insulated box for wind turbine blade maintenance. In winter, during maintenance work in cold, high-altitude regions, the box, carrying one maintenance worker, is hoisted to the maintenance area using hoisting equipment. The outer sidewall of the equipment is designed with an arc-shaped curved surface to fit the arc-shaped structure of the wind turbine blade, allowing the main suction cup to fit snugly against the blade's outer wall. A vacuum pump in the adsorption assembly creates a vacuum inside the main suction cup, fixing it in place and ensuring stability during maintenance. A heating and temperature control unit provides a heat source to the operating room, allowing maintenance personnel to perform operations in a stable, constant-temperature environment while resisting interference from harsh conditions such as crosswinds at high altitudes. This effectively solves the industry problem of difficult maintenance of wind turbine blades in cold, high-altitude regions during winter.

[0017] 2. This invention also incorporates windproof components on both sides of the housing. After the housing is fixed to the wind turbine blades via the adsorption components, during maintenance, if strong winds occur in the high-altitude area, the motor of the drive component can be started. The motor drives the drive gear to rotate, and the power is transmitted to the bevel gear through the gear set, which in turn drives the lead screw to rotate synchronously. The screw's rotational motion is converted into the linear movement of the drive block through the threaded engagement between the lead screw and the drive block. This causes the windproof plates to slide out along the axial position of the fixed cylinder towards the wind turbine blades. After the two sets of symmetrically distributed windproof plates extend synchronously, they form a windproof enclosure for the maintenance operation area outside the operating room, effectively preventing strong winds from blowing directly into the operation area and interfering with the maintenance personnel's operations. This further solves the problem of strong winds affecting maintenance operations during wind turbine blade maintenance in cold, high-altitude areas during winter.

[0018] 3. The present invention also incorporates multiple vertically stacked adaptive blocks that are slidably arranged within the inner cavity of the wind deflector. When the wind deflector slides out toward the wind turbine blade and contacts the blade, each adaptive block can adaptively adjust its extension length according to the actual curvature of the wind turbine blade based on the elastic extension and contraction characteristics of the spring, thereby achieving a close fit with the outer wall of the wind turbine blade. This further enhances the wind deflector's wind-shielding effect and avoids large gaps between the wind deflector and the wind turbine blade due to mismatched curvature. It also solves the problem that strong winds at high altitudes can easily overflow into the maintenance operation area through large gaps, and that large air volumes can still interfere with maintenance operations.

[0019] 4. This invention also incorporates a secondary suction cup designed at one end of the adapting block. Once the adapting block is adaptively adjusted to fit tightly against the outer wall of the wind turbine blade according to its curvature, the second vacuum pump and vacuum solenoid valve can be activated. Vacuuming is then performed on the airflow channel and the inner cavity of the secondary suction cup via the first pipe, the inner cavity of the fixed plate, the inner cavity of the fixed cylinder, the piston head, and the air pipe. This creates a vacuum adsorption fixation between the secondary suction cup and the outer wall of the wind turbine blade. This not only makes the fit between the adapting block and the wind turbine blade more secure, preventing the adapting block from shifting or gaps caused by strong winds at high altitudes, thus further improving the windproof sealing effect, but also provides secondary fixation for the windproof components, further enhancing the overall stability of the insulation box in strong wind environments.

[0020] 5. This invention also incorporates a locking plate within the sliding chamber of the adapting block. When the second vacuum pump creates a negative pressure in the airflow channel, the air pressure in the piston chamber decreases accordingly. Under the influence of external atmospheric pressure, the piston plate compresses the return spring and slides towards the inner side of the piston chamber, causing the second toothed plate to move synchronously. Through the meshing transmission gear, the first toothed plate and the slide frame slide forward, thereby pushing the locking plate towards the semi-arc slide groove. This allows tooth one to mesh tightly with tooth two on the inner side of the semi-arc slide groove, automatically locking the sliding position of the adapting block and preventing displacement due to strong winds at high altitudes or equipment vibration. When maintenance is completed, the vacuum solenoid valve is opened to depressurize the airflow channel. The piston plate resets under the elastic force of the return spring, and the locking plate retracts through the transmission gear, disengaging tooth one from tooth two and releasing the lock on the adapting block. The entire locking and unlocking process is automatically completed with the adsorption and depressurization of the auxiliary suction cup.

[0021] 6. This invention also achieves smooth and stable tooth engagement by sliding the locking plate onto the slide rod on the inner side wall of the slide frame and designing the tooth ends of tooth one and tooth two to be the same flat and pointed shape. During the process of the locking plate moving towards the semi-circular slide groove to engage tooth one and tooth two, the slide rod allows the locking plate to undergo a small displacement along its axial direction. The flat and pointed tooth end design structurally avoids the phenomenon of tooth heads abutting each other. Even if there is a slight tooth misalignment, tooth one of the locking plate will form a compression on the tooth inclined surface of tooth two and drive the locking plate to move slightly, thereby achieving adaptive adjustment when the teeth are misaligned, ensuring that the two can smoothly and tightly complete the engagement, and ensuring the smooth realization of the locking of the adaptive block position. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the internal structure of the box of the present invention from one perspective;

[0024] Figure 3 This is a second-view schematic diagram of the internal structure of the box of the present invention;

[0025] Figure 4 This is a schematic diagram of the box side wall structure of the present invention;

[0026] Figure 5 This is a schematic diagram of the drive component structure of the present invention;

[0027] Figure 6 This is a schematic diagram of the disassembled structure of the windproof component of the present invention;

[0028] Figure 7 This is a schematic diagram of the cross-sectional structure of the windshield of the present invention;

[0029] Figure 8 This is a schematic diagram of the semi-circular groove structure of the present invention;

[0030] Figure 9 This is a schematic diagram of the adaptive block structure of the present invention;

[0031] Figure 10 This is a cross-sectional view of the adapting block and the fixing cylinder of the present invention;

[0032] Figure 11 This is a schematic diagram of the cross-sectional structure of the adapting block and the wind baffle of the present invention;

[0033] Figure 12 for Figure 11 Enlarged schematic diagram of the structure at point A in the middle;

[0034] Figure 13 This is a schematic diagram of the disassembled structure of the carriage, locking plate, and sliding chamber of the present invention;

[0035] Figure 14 This is a schematic diagram of one usage state of the present invention.

[0036] Explanation of the labels in the diagram:

[0037] 1. Housing; 2. Adsorption assembly; 3. Drive assembly; 4. Windproof assembly; 5. Adaptive block;

[0038] 11. Control room; 12. Heating chamber; 13. Equipment room; 14. Heating and temperature control unit; 15. Heat conduction hole; 16. Tool storage box; 17. Sleeve; 18. Observation window; 19. Insulated door;

[0039] 201. Main suction cup; 202. First vacuum pump;

[0040] 301. Motor; 302. Drive gear; 303. Bevel gear; 304. Lead screw;

[0041] 401. Fixing plate; 402. Fixing frame; 403. Fixing cylinder; 404. Wind baffle; 4041. Semi-arc slide groove; 4042. Toothed joint two; 405. Drive block; 406. Second vacuum pump; 407. First pipe; 408. Second pipe; 409. Vacuum solenoid valve;

[0042] 501. Elastic spring; 502. Semi-circular protrusion; 503. Airflow channel; 504. Secondary suction cup; 505. Air pipe; 506. Piston head; 507. Sliding chamber; 508. Piston chamber; 509. Carrier; 510. First toothed plate; 511. Slide rod; 512. Locking plate; 5121. Tooth opening one; 513. Piston plate; 514. Return spring; 515. Second toothed plate; 516. Transmission gear. Detailed Implementation

[0043] like Figures 1 to 14 As shown, the present invention relates to an arc-shaped fitting high-altitude insulation box for wind turbine blade maintenance, comprising a box body 1. The box body 1 has a multi-layer structure. Its outer layer is made of carbon fiber composite material, which is high in strength and lightweight, and the surface is sprayed with an anti-icing and hydrophobic coating. Its middle layer is a vacuum insulation board structure. Its inner layer is made of aluminum alloy plate, and the surface is sprayed with a high-temperature resistant and antistatic coating, which facilitates cleaning and heat reflection, and improves the temperature uniformity inside the box. The frame of the box body 1 is made of high-strength aluminum alloy profile.

[0044] The inner cavity of the enclosure 1 contains an operating room 11, a heating chamber 12, and an equipment room 13. The space of the operating room 11 can accommodate one operator. The inner cavity of the heating chamber 12 contains a heating temperature control unit 14. The operating room 11 and the heating chamber 12 are connected by multiple heat conduction holes 15. The heating temperature control unit 14 is a conventional heating mechanism used to provide a heat source for the operating room 11. The top of the enclosure 1 is connected to external hoisting equipment by ropes to realize the lifting and lowering adjustment of the enclosure 1 at high altitudes. The outer wall of the enclosure 1 also contains a tool storage box 16, a sleeve 17, and an observation window 18. The inner cavity of the tool storage box 16 is separated from the operating room 11 by an insulated door 19. The sleeve 17 is a conventional elastic sealing sleeve structure with a sleeve length of 200mm, which can fit the arm to prevent heat loss from the enclosure and cold air from entering.

[0045] In an embodiment of the present invention, an adsorption assembly 2 is arranged inside the equipment chamber 13. The adsorption assembly 2 includes a first vacuum pump 202 arranged inside the equipment chamber 13, and a plurality of main suction cups 201 arranged on the outer wall of the equipment chamber 13. The suction end of the first vacuum pump 202 is connected to the main suction cups 201 through a suction pipe. The first vacuum pump 202 is used to evacuate the inside of the main suction cups 201, so that the main suction cups 201 form a vacuum adsorption and fixation with the outer wall of the wind turbine blade, thereby enabling the housing 1 to pass through multiple The main suction cup 201 is adsorbed and fixed to the side wall of the wind turbine blade; and the outer wall of the equipment chamber 13 is an arc-shaped curved surface structure, which is adapted to the curvature of the outer wall of the wind turbine blade. Multiple main suction cups 201 are spatially distributed along the curvature direction of the arc-shaped curved surface structure, and the adsorption end face of each main suction cup 201 is flush with the arc-shaped curved surface of the outer wall of the equipment chamber 13, ensuring that multiple main suction cups 201 can simultaneously conform to the curvature of the outer wall of the wind turbine blade, and achieve tight adhesion and fixation with the outer wall of the wind turbine blade.

[0046] This invention designs an arc-shaped, fitted high-altitude insulated box for wind turbine blade maintenance. In winter, during maintenance work in cold, high-altitude regions, the box 1, carrying one maintenance worker, is hoisted to the maintenance area using hoisting equipment. The outer wall of the equipment chamber 13 is designed as an arc-shaped curved surface to fit the arc-shaped structure of the wind turbine blade, allowing the main suction cup 201 to adhere to the outer wall. The first vacuum pump 202 of the adsorption assembly 2 creates a vacuum inside the main suction cup 201, forming a vacuum adsorption fixation between the main suction cup 201 and the outer wall of the wind turbine blade, thus securing the box 1 and ensuring its stability during maintenance. A heating and temperature control unit 14 provides a heat source to the operating chamber 11, enabling maintenance personnel to perform maintenance operations in a stable, constant-temperature environment while resisting interference from harsh conditions such as crosswinds at high altitudes. This effectively solves the industry problem of difficult maintenance of wind turbine blades in cold, high-altitude regions during winter.

[0047] In an embodiment of the present invention, a drive assembly 3 is arranged on the top of the housing 1, and a wind shielding assembly 4 is arranged at the output end of the drive assembly 3. There are two sets of wind shielding assemblies 4, which are symmetrically distributed on both sides of the housing 1. The wind shielding assembly 4 includes a fixing plate 401 and a fixing frame 402 connected to the outer wall of the housing 1. Multiple fixing cylinders 403 are arranged on the side wall of the fixing plate 401. The fixing cylinders 403 penetrate the side wall of the fixing frame 402. A wind deflector 404 is slidably arranged on the fixing cylinder 403. The drive assembly 3 can control the wind deflector 404 to slide along the axial direction of the fixing cylinder 403. When the wind deflector 404 slides out, it can form an enclosed shielding state for the operating area.

[0048] In an embodiment of the present invention, the drive assembly 3 includes a motor 301 and a gear set disposed on the top of the housing 1. The output end of the motor 301 is connected to a drive gear 302, and the output end of the drive gear 302 is connected to a bevel gear 303 via the gear set. Figures 2 to 6 As shown, the gear set is a conventional combination transmission structure of gears and bevel gears adapted to the structural shape of the housing 1. A lead screw 304 is rotatably arranged on the side wall of the fixed frame 402, and the bevel gear 303 is coaxially connected to the lead screw 304.

[0049] In another embodiment of the present invention, a drive block 405 is connected to the side wall of the wind deflector 404. The drive block 405 is movably sleeved on the lead screw 304, and the inner circumference of the drive block 405 is threadedly engaged with the lead screw 304 to form a linear movement structure driven by the lead screw.

[0050] This invention designs windproof components 4 on both sides of the housing 1. After the housing 1 is fixed to the wind turbine blade by the adsorption component 2, when strong winds occur in the high-altitude area during maintenance, the motor 301 of the drive component 3 can be started. The motor 301 drives the drive gear 302 to rotate, and the power is transmitted to the bevel gear 303 through the transmission of the gear set. This drives the lead screw 304 to rotate synchronously. By utilizing the threaded engagement between the lead screw 304 and the drive block 405, the rotational motion of the lead screw 304 is converted into the linear movement of the drive block 405. This causes the wind deflector 404 to slide out along the axial position of the fixed cylinder 403 towards the wind turbine blade. After the two sets of symmetrically distributed wind deflectors 404 extend synchronously, they can form a windproof enclosure for the maintenance operation area outside the control room 11, effectively preventing strong winds from blowing directly into the operation area and interfering with the operation of maintenance personnel. This further solves the problem that strong winds can easily interfere with maintenance operations during the maintenance of wind turbine blades in cold and high-altitude areas in winter.

[0051] In an embodiment of the present invention, a plurality of adapting blocks 5 are slidably arranged in the inner cavity of the wind deflector 404. The plurality of adapting blocks 5 are arranged vertically and stacked, and each pair of adapting blocks 5 slides together. The ends of the adapting blocks 5 are connected to the inner cavity sidewall of the wind deflector 404 through spring springs 501. When the wind deflector 404 slides forward along the axial direction of the fixed cylinder 403, the plurality of adapting blocks 5 contact the sidewall of the wind turbine blade. Each adapting block 5 can adaptively compress the spring spring 501 according to the actual curvature of the wind turbine blade and adjust the extension length.

[0052] This invention utilizes multiple vertically stacked adaptive blocks 5 slidably arranged within the inner cavity of the wind deflector 404. When the wind deflector 404 slides out towards the wind turbine blade and contacts the blade, each adaptive block 5 can adaptively adjust its extension length according to the actual curvature of the wind turbine blade based on the elastic extension characteristics of the spring 501, achieving a close fit with the outer wall of the wind turbine blade. This further enhances the wind protection effect of the wind deflector 404, avoids large gaps between the wind deflector 404 and the wind turbine blade due to curvature mismatch, and solves the problem of strong winds at high altitudes overflowing into the maintenance operation area, which can easily cause the overflowing air volume to increase through large gaps, and the large air volume still interferes with maintenance operations.

[0053] In an embodiment of the present invention, the inner sidewall of the windbreak plate 404 is provided with a plurality of semi-circular sliding grooves 4041, and the sidewall of the adapting block 5 is integrally formed with a semi-circular protrusion 502, which is slidably arranged within the semi-circular sliding groove 4041. By slidably arranging each adapting block 5 within the semi-circular sliding groove 4041 via the semi-circular protrusion 502, the present invention ensures that the weight of each adapting block 5 is borne by the semi-circular sliding groove 4041, avoiding the large frictional force between the lower adapting blocks 5 due to their own weight caused by the weight of multiple vertically stacked adapting blocks 5, which would affect the sliding of the lower adapting blocks 5. This makes the extension and retraction adjustment of each adapting block 5 smoother and more responsive, ensuring the timely contact between the adapting block 5 and the outer wall of the wind turbine blade, and preventing the phenomenon of the adapting block 5 being obstructed from sliding.

[0054] In an embodiment of the present invention, an airflow channel 503 is arranged in the inner cavity of the adapting block 5. One end of the adapting block 5 is detachably connected to a secondary suction cup 504, and the other end is detachably connected to an air pipe 505. The air pipe 505 is movably arranged in the inner cavity of the fixed cylinder 403. A piston head 506 is connected to the end of the air pipe 505. The piston head 506 is tightly fitted with the inner peripheral wall of the fixed cylinder 403, forming a piston-type sliding fit structure that can reciprocate along the axial direction of the fixed cylinder 403. A second vacuum pump 406 is also arranged in the equipment chamber 13. The suction end of the second vacuum pump 406 is connected to the inner cavity of the fixed plate 401 through a first pipe 407. The inner cavity of the fixed plate 401 is connected to the inner cavity of the fixed plate 401 through a second pipe 408. The inner cavity of the fixing plate 401 of the other set of windproof components 4 is connected; the inner cavity of the fixing plate 401 is connected to the inner cavity of the fixing cylinder 403 through the vacuum solenoid valve 409. The vacuum solenoid valve 409 is a conventional electromagnetic control vacuum on / off valve structure in the example, so that multiple auxiliary suction cups 504 can form independent on / off circuits with the inner cavity of the fixing plate 401, avoiding the problem that when one auxiliary suction cup 504 fails to adsorb and adhere, it will affect the negative pressure in the inner cavity of other auxiliary suction cups 504, resulting in the failure of adsorption. The inner cavity of the fixing cylinder 403 is connected to the inner cavity of the air pipe 505 through the inner cavity of the piston head 506, and the inner cavity of the air pipe 505 is connected to the inner cavity of the auxiliary suction cup 504 through the airflow channel 503.

[0055] This invention designs a secondary suction cup 504 at one end of the adapting block 5. When the adapting block 5 is adaptively adjusted to fit tightly against the outer wall of the wind turbine blade according to the curvature of the blade, the second vacuum pump 406 can be turned on and the vacuum solenoid valve 409 can be opened. Vacuuming is performed on the airflow channel 503 and the inner cavity of the secondary suction cup 504 through the first pipe 407, the inner cavity of the fixing plate 401, the inner cavity of the fixing cylinder 403, the piston head 506, and the air pipe 505. This allows the secondary suction cup 504 to form a vacuum adsorption fixation with the outer wall of the wind turbine blade. This not only makes the fit between the adapting block 5 and the wind turbine blade more secure, avoiding the displacement and gaps caused by the impact of strong winds at high altitudes, but also further improves the windproof sealing effect. It also forms a secondary fixation for the windproof component 4, enhancing the firmness of the entire insulation box adsorption fixation to the wind turbine blade in strong wind environments. At the same time, the piston-type sliding cooperation between the piston head 506 and the fixing cylinder 403 can move synchronously with the extension and retraction of the adapting block 5, ensuring the sealing and continuity of the vacuuming channel and ensuring the stability of the adsorption effect of the secondary suction cup 504.

[0056] In an embodiment of the present invention, a sliding chamber 507 is formed on the side wall of the semi-circular protrusion 502 on the other side wall of the adapting block 5. The sliding chamber 507 is connected to the airflow channel 503 through the piston chamber 508. A slide 509 is slidably arranged in the sliding chamber 507. A first toothed plate 510 is connected to the top of the slide 509. A locking plate 512 is arranged in the inner cavity of the slide 509. A toothed edge 5121 is arranged on the side wall of the locking plate 512. A piston plate 513 is slidably arranged in the piston chamber 508. The side wall of the piston plate 513 is connected to the piston plate 513 by a return spring 514. The piston chamber 508 is connected to the inner wall, and the piston plate 513 is connected to the other side wall with a second toothed plate 515; the sliding chamber 507 has a transmission gear 516 rotatably arranged on its inner wall, which is located between the first toothed plate 510 and the second toothed plate 515 and is meshed with both the first toothed plate 510 and the second toothed plate 515 respectively; the wind deflector 4044 has a groove on its inner wall of the semi-arc sliding groove 4041, and a second toothed opening 4042 is arranged on the inner wall of the groove, which is able to mesh with the second toothed opening 4042.

[0057] The present invention also incorporates a locking plate 512 within the sliding chamber 507 of the adapting block 5. When the second vacuum pump 406 creates a negative pressure by evacuating the airflow channel 503, the air pressure within the piston chamber 508 decreases accordingly. Under the influence of external atmospheric pressure, the piston plate 513 compresses the return spring 514 and slides towards the inner side of the piston chamber 508, causing the second toothed plate 515 to move synchronously. Through the meshing transmission gear 516, the first toothed plate 510 and the slide 509 slide forward, thereby pushing the locking plate 512 towards the semi-arc slide groove 4041, so that the first tooth 5121 engages with the second tooth 40 on the inner side of the semi-arc slide groove 4041. 42 engages tightly to automatically lock the sliding position of the adaptor block 5, preventing displacement of the adaptor block 5 due to high-altitude strong wind impact or equipment vibration; when the maintenance work is completed, the vacuum solenoid valve 409 is opened to release the pressure of the airflow channel 503, and the piston plate 513 is reset under the elastic force of the return spring 514. The transmission gear 516 drives the locking plate 512 to retract, and the first tooth 5121 and the second tooth 4042 disengage, releasing the lock on the adaptor block 5. The entire locking and unlocking process is automatically completed with the adsorption and pressure release of the auxiliary suction cup 504, without the need for additional manual operation, improving the automation level and ease of operation of the equipment.

[0058] In another embodiment of the present invention, a plurality of slide rods 511 are connected to the inner side wall of the slide 509, and the locking plate 512 is slidably arranged on the slide rods 511. The tooth tips of tooth 1 5121 and tooth 2 4042 are both flat and pointed with the same structure. The present invention further achieves smooth and stable tooth engagement by sliding the locking plate 512 onto the slide rod 511 on the inner side wall of the slide 509, and designing the tooth ends of the first tooth 5121 and the second tooth 4042 to be the same flat and pointed shape. During the process of the locking plate 512 moving towards the semi-circular slide groove 4041 and engaging the first tooth 5121 and the second tooth 4042, the slide rod 511 allows the locking plate 512 to undergo a small displacement along its axial direction. The flat and pointed tooth end design structurally avoids the phenomenon of tooth heads abutting each other. Even if there is a slight tooth misalignment, the first tooth 5121 of the locking plate 512 will form a compression on the tooth inclined surface of the second tooth 4042 and drive the locking plate 512 to move slightly. This achieves adaptive adjustment when the teeth are misaligned, ensuring that the two can smoothly and tightly complete the engagement, ensuring the smooth realization of the locking of the adaptive block 5, and the small displacement will not have a significant impact on the locking state.

[0059] Working principle: This embodiment provides an arc-shaped fitting high-altitude insulated box for wind turbine blade maintenance. In use, maintenance personnel enter the operating room 11, and then the box 1 is hoisted to the wind turbine blade maintenance area by external hoisting equipment. The first vacuum pump 202 of the adsorption component 2 is started to evacuate the main suction cup 201 on the arc-shaped outer wall of the equipment room 13, so that the main suction cup 201 is vacuum adsorbed with the outer wall of the wind turbine blade, thus completing the high-altitude fixation of the box 1. Maintenance personnel can observe the working surface through the observation window 18 and carry out the work through the sleeve 17. Tools can be sent to the tool storage box 16 through the insulated door 19 for use. The heating temperature control unit 14 in the heating chamber 12 increases the heat source for the operating room 11, forming a suitable working environment.

[0060] In the event of strong winds at high altitudes, the motor 301 of the drive assembly 3 is activated. The motor 301 drives the drive gear 302 to rotate, which is then transmitted to the bevel gear 303 via the gear set. This drives the lead screw 304 to rotate. Utilizing the threaded engagement between the lead screw 304 and the drive block 405, the wind deflector 404 is pushed axially along the fixed cylinder 403 towards the wind turbine blades, thus shielding the maintenance operation area and preventing strong winds from blowing directly onto it. Furthermore, during the sliding process of the wind deflector 404, the adapting block 5 inside its cavity and the wind turbine blades... When the blade sidewall contacts the blade, the extension length is adaptively adjusted according to the actual curvature of the blade by relying on the elastic extension and contraction of the elastic spring 501. After the adapting block 5 is tightly attached to the outer wall of the blade, the second vacuum pump 406 is turned on and the vacuum solenoid valve 409 is opened. Vacuum is drawn through the first pipe 407, the inner cavity of the fixing plate 401, the inner cavity of the fixing cylinder 403, the piston head 506 and the air pipe 505 to the airflow channel 503 and the auxiliary suction cup 504, so that the auxiliary suction cup 504 is vacuum adsorbed to the outer wall of the blade, and the secondary fixation is achieved.

[0061] At the same time, when the airflow channel 503 forms a negative pressure, the air pressure in the piston chamber 508 decreases synchronously. The piston plate 513 compresses the return spring 514 under atmospheric pressure and slides, driving the second tooth plate 515 to move. Through the meshing transmission gear 516, it pushes the first tooth plate 510, the slide 509 and the locking plate 512 to move, so that the first tooth 5121 and the second tooth 4042 are tightly meshed, automatically locking the sliding position of the adaptation block 5.

[0062] Furthermore, the two sets of windproof components 4 enclose the maintenance operation area. Maintenance personnel can complete maintenance operations such as grinding, bonding, and curing of the wind turbine blade skin in the operating room 11 using sleeves 17. After maintenance, the vacuum solenoid valve 409 is opened to depressurize the airflow channel 503 and the auxiliary suction cup 504. The piston plate 513 is reset under the action of the return spring 514, which drives the locking plate 512 to retract, releasing the tooth engagement and locking of the adaptation block 5, and shutting off the second vacuum pump 406. The drive component 3 is started to rotate in reverse, driving the wind baffle 404 to reset axially along the fixed cylinder 403. Then the first vacuum pump 202 is shut off to release the adsorption and fixation of the main suction cup 201. Finally, the housing 1 is lifted off the wind turbine blade by external hoisting equipment, completing the entire maintenance operation process.

[0063] The embodiments disclosed in this invention are preferred embodiments, but are not limited thereto. Those skilled in the art can easily understand the spirit of this invention based on the above embodiments and make different extensions and variations, but as long as they do not depart from the spirit of this invention, they are all within the protection scope of this invention.

Claims

1. An arc-shaped, fitted high-altitude insulation box for wind turbine blade maintenance, characterized in that, Includes a housing (1), the inner cavity of which is arranged an operating room (11), a heating room (12) and an equipment room (13); The heating chamber (12) is equipped with a heating temperature control unit (14). The operating chamber (11) and the heating chamber (12) are connected by a plurality of heat conduction holes (15); The equipment room (13) is equipped with an adsorption assembly (2), which includes multiple main suction cups (201) arranged on the outer wall of the equipment room (13). The box (1) can be adsorbed and fixed to the side wall of the wind turbine blade through the multiple main suction cups (201). A drive assembly (3) is arranged on the top of the housing (1), and a windproof assembly (4) is arranged at the output end of the drive assembly (3). There are two sets of windproof assemblies (4), and the two sets of windproof assemblies (4) are symmetrically distributed on both sides of the housing (1). The windproof assembly (4) includes a fixing plate (401) and a fixing frame (402) connected to the outer side wall of the box (1). The fixing plate (401) has a plurality of fixing cylinders (403) arranged on its side wall. The fixing cylinders (403) penetrate the side wall of the fixing frame (402). A wind deflector (404) is slidably arranged on the fixing cylinders (403). The drive assembly (3) can control the wind deflector (404) to slide along the axial direction of the fixed cylinder (403). When the wind deflector (404) slides out, it can form an enclosed shielding state for the operating area.

2. The arc-shaped fitting high-altitude insulation box for wind turbine blade maintenance according to claim 1, characterized in that, The top of the box (1) is connected to an external hoisting device by ropes to realize the lifting and lowering adjustment of the box (1) at high altitude; the outer wall of the box (1) is also provided with a tool storage box (16), a sleeve (17) and an observation window (18), and the inner cavity of the tool storage box (16) is separated from the operating room (11) by an insulated door (19).

3. The arc-shaped fitting high-altitude insulation box for wind turbine blade maintenance according to claim 2, characterized in that, The adsorption assembly (2) also includes a first vacuum pump (202) arranged in the equipment chamber (13). The suction end of the first vacuum pump (202) is connected to the main suction cup (201) through the suction pipe. The outer wall of the equipment chamber (13) is an arc-shaped curved surface structure, and multiple main suction cups (201) are arranged in a spatially distributed manner along the curvature direction of the arc-shaped curved surface structure.

4. The arc-shaped fitting high-altitude insulation box for wind turbine blade maintenance according to claim 3, characterized in that, The drive assembly (3) includes a motor (301) and a gear set arranged on the top of the housing (1). The output end of the motor (301) is connected to a drive gear (302). The output end of the drive gear (302) is connected to a bevel gear (303) through the gear set. A lead screw (304) is rotatably arranged on the side wall of the fixed frame (402). The bevel gear (303) and the lead screw (304) are coaxially connected.

5. The arc-shaped fitting high-altitude insulation box for wind turbine blade maintenance according to claim 4, characterized in that, The side wall of the wind deflector (404) is connected to a drive block (405), the drive block (405) is movably sleeved on the lead screw (304), and the inner circumference of the drive block (405) is threadedly engaged with the lead screw (304) to form a linear movement structure driven by the lead screw.

6. The arc-shaped fitting high-altitude insulation box for wind turbine blade maintenance according to claim 5, characterized in that, The wind deflector (404) has multiple adaptable blocks (5) slidably arranged in its inner cavity. The multiple adaptable blocks (5) are stacked vertically and are slidably engaged between each pair of adaptable blocks (5). The end of the adapting block (5) is connected to the inner wall of the wind deflector (404) via a spring spring (501). When the wind deflector (404) slides forward along the axial direction of the fixed cylinder (403), multiple adapting blocks (5) contact the side wall of the wind turbine blade. Each adapting block (5) can adaptively compress the spring spring (501) according to the actual curvature of the wind turbine blade to adjust the extension length.

7. The arc-shaped fitting high-altitude insulation box for wind turbine blade maintenance according to claim 6, characterized in that, The wind deflector (404) has multiple semi-circular grooves (4041) on its inner sidewall, and the adapting block (5) has a semi-circular protrusion (502) integrally formed on its sidewall. The semi-circular protrusion (502) is slidably arranged in the semi-circular groove (4041).

8. The arc-shaped fitting high-altitude insulation box for wind turbine blade maintenance according to claim 7, characterized in that, An airflow channel (503) is arranged in the inner cavity of the adapting block (5). One end of the adapting block (5) is detachably connected to a secondary suction cup (504), and the other end is detachably connected to an air tube (505). The air tube (505) is movably arranged in the inner cavity of the fixed cylinder (403). A piston head (506) is connected to the end of the air tube (505). The piston head (506) is tightly fitted with the inner peripheral wall of the fixed cylinder (403) to form a piston-type sliding fit structure that can slide back and forth along the axial direction of the fixed cylinder (403). The equipment room (13) is also equipped with a second vacuum pump (406). The pumping end of the second vacuum pump (406) is connected to the inner cavity of the fixed plate (401) through the first pipe (407). The inner cavity of the fixed plate (401) is connected to the inner cavity of the fixed plate (401) of another set of windproof components (4) through the second pipe (408). The inner cavity of the fixed plate (401) is connected to the inner cavity of the fixed cylinder (403) through the vacuum solenoid valve (409). The inner cavity of the fixed cylinder (403) is connected to the inner cavity of the air pipe (505) through the inner cavity of the piston head (506). The inner cavity of the air pipe (505) is connected to the inner cavity of the auxiliary suction cup (504) through the airflow channel (503).

9. The arc-shaped fitting high-altitude insulation box for wind turbine blade maintenance according to claim 8, characterized in that, The side wall of the semi-arc protrusion (502) on the other side wall of the adaptation block (5) begins to have a sliding chamber (507), which is connected to the airflow channel (503) through the piston chamber (508). A slide (509) is slidably arranged in the sliding chamber (507). A first toothed plate (510) is connected to the top of the slide (509). A locking plate (512) is arranged in the inner cavity of the slide (509). A toothed edge (5121) is arranged on the side wall of the locking plate (512). A piston plate (513) is slidably arranged in the piston chamber (508). The side wall of the piston plate (513) is connected to the inner side wall of the piston chamber (508) through a return spring (514). A second toothed plate (515) is connected to the other side wall of the piston plate (513). A transmission gear (516) is rotatably arranged on the inner side wall of the sliding chamber (507). The transmission gear (516) is arranged between the first toothed plate (510) and the second toothed plate (515) and forms a meshing connection with the first toothed plate (510) and the second toothed plate (515) respectively. The wind deflector (404) has a groove on the inner side wall of the semi-arc sliding groove (4041), and a toothed mouth (4042) is arranged on the inner side wall of the groove. The toothed mouth (5121) can be engaged with the toothed mouth (4042).

10. The arc-shaped fitting high-altitude insulation box for wind turbine blade maintenance according to claim 9, characterized in that, The inner wall of the slide (509) is connected to a plurality of slide rods (511), and the locking plate (512) is slidably arranged on the slide rods (511). The tooth ends of the first tooth (5121) and the second tooth (4042) are both flat and pointed with the same structure.

Images