Paint spraying and drying integrated equipment for outer surface of wind power tower drum

Abstract

The invention discloses wind power tower outer surface paint spraying and drying integrated equipment, and relates to the technical field of wind power tower processing, the wind power tower outer surface paint spraying and drying integrated equipment comprises a bottom frame and a tower, and one side of the top of the bottom frame is fixedly provided with a fixing and supporting mechanism used for playing a supporting and hanging role from the inner wall of the tower. The inner wall of the tower drum is supported and hung through the hanging rods, so that the tower drum does not need to make contact with an external support in the paint spraying operation process, the painted part of the outer surface of the tower drum cannot be extruded or rubbed when the tower drum rotates, and the problems that in the prior art, due to contact of the support, a paint surface is scratched, abraded, peeled off and the like are fundamentally solved; the problem of damage of the paint surface is solved, so that the integrity of the anticorrosive coating on the outer surface of the tower drum is guaranteed, the corrosion process of a metal matrix is effectively delayed, the service life of the tower drum is prolonged, reworking and repairing caused by damage of the paint surface are avoided, and the labor, material and time costs are reduced; and the long-term operation and maintenance expenditure of the wind power equipment is indirectly reduced.

Description

Technical Field

[0001] This invention relates to the field of wind turbine tower processing technology, specifically to an integrated equipment for painting and drying the outer surface of wind turbine towers. Background Technology

[0002] In existing technologies, the painting of the outer surface of wind turbine towers is generally carried out by placing the tower horizontally on a support. Specifically, a support structure adapted to the curvature of the tower is set up as a support, and the tower is placed horizontally on the support. Then, the tower is driven to rotate around its own axis on the support by a power module such as a motor or gear transmission. At the same time, a painting module such as a robotic arm or a fixed spray gun is used to paint the outer surface of the tower during the rotation. The original intention of this method is to achieve all-round coverage of the outer surface of the tower by combining the rotation of the tower with the operation of the painting module. Theoretically, this can improve the painting efficiency and ensure the uniformity of the coating.

[0003] However, in practical applications, the above-mentioned painting method has significant technical defects. Due to the large weight of the tower itself, especially large wind turbine towers, a single section can weigh several tons. When the tower is placed horizontally on the support and rotated by the power module, the painted part of its outer surface will inevitably be in continuous contact with the support. Although some processes will simultaneously air dry the freshly painted surface, such as by using fans or hot air drying, the newly formed coating is often not completely dry and hardened due to the continuity of the painting operation and the curing time of the paint surface. It is still in a relatively fragile state. Under the pressure of the tower's own weight, the painted part will generate squeezing and friction forces when it comes into contact with the support, which can easily lead to scratches, wear, dents, or even peeling of the paint surface.

[0004] Such paint damage not only disrupts the integrity of the outer coating of the tower, affecting its appearance, but more seriously, it causes the damaged area to lose its anti-corrosion protection, resulting in the tower's metal substrate being directly exposed to the external environment, accelerating the corrosion process, thus shortening the tower's service life and increasing the workload and cost of subsequent repairs and rework. In addition, the repair process of damaged paint may further affect the overall anti-corrosion effect due to uneven coating thickness and color differences, posing a safety hazard to the long-term stable operation of wind turbine towers. Summary of the Invention

[0005] Based on this, the purpose of the present invention is to provide an integrated equipment for painting and drying the outer surface of wind turbine towers, so as to solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an integrated equipment for painting and drying the outer surface of a wind turbine tower, comprising a base frame and a tower, wherein a fixed support mechanism is fixed on one side of the top of the base frame for supporting and hanging from the inner wall of the tower.

[0007] The fixed support mechanism includes a fixed plate fixed on the base frame, and a hanging rod and a support plate are fixed to the top and middle of one side of the fixed plate, respectively. The fixed support mechanism also includes a first diagonal brace and a second diagonal brace, and the first diagonal brace and the second diagonal brace are fixed to the top and bottom of the connection between the fixed plate and the support plate to strengthen the strength between the fixed plate and the support plate.

[0008] The top of the support plate is fixed with multiple sets of support frames that are connected to the hanging rod, which strengthen the hanging rod.

[0009] This invention uses a hanging rod to support the inner wall of the tower, replacing the traditional external support method. This eliminates the need for the tower to contact external supports during painting. Even with the tower's significant weight, the painted outer surface will not be squeezed or rubbed during rotation. This fundamentally solves the problems of paint scratches, wear, and peeling caused by support contact in existing technologies, ensuring the integrity and durability of the coating. Furthermore, by resolving the paint damage issue, the integrity of the anti-corrosion coating on the tower's outer surface is guaranteed, effectively slowing down the corrosion process of the metal substrate and extending the tower's service life. It also avoids rework and repairs due to paint damage, reducing labor, material, and time costs, and indirectly lowering long-term maintenance expenses for wind power equipment.

[0010] The top two sides of the support plate are equipped with drive mechanisms for driving the tower to rotate. The drive mechanism includes a drive motor, a power wheel, a sprocket and a chain. The drive motor is installed on the top of the support plate and the power wheel is rotatably connected to the outside of the hanging rod.

[0011] Furthermore, sprockets are fixed on one side of the drive wheel and at the output end of the drive motor. The two sets of sprockets are connected by a chain drive, which serves to drive the drive motor to rotate the drive wheel.

[0012] The outer side of the hanging rod is also movably connected to multiple sets of auxiliary support wheels whose outer walls contact the inner wall of the tower, and the multiple sets of auxiliary support wheels and two sets of power wheels are all rotatably connected to the hanging rod through bearings;

[0013] The base frame is equipped with a paint drying mechanism located at one end of the tower, and the paint drying mechanism includes a sliding frame that is slidably connected to the base frame.

[0014] The sliding frame has a built-in painting module for painting the outer surface of the tower, and the sliding frame also has a drying rack located below the painting module. The drying rack has multiple drying heads connected to the inside facing the outer surface of the tower for synchronous drying after the outer surface of the tower is sprayed.

[0015] The paint drying mechanism also includes a first connecting pipe and a paint spray head that cooperate with the paint spraying module. The first connecting pipe is connected to an external high-pressure pump through a pipeline to pressurize the paint in the paint storage tank and deliver it to the paint spray head for spraying onto the outer surface of the tower.

[0016] It also includes a second connecting pipe that is connected to the drying rack. The second connecting pipe is connected to an external gas compressor through a pipeline. It is used to compress the gas and then use multiple sets of drying heads to dry the outer surface of the tower after it has been painted.

[0017] The paint drying mechanism also includes a movable motor fixed on the sliding frame, and a rack that meshes with the gear at the output end of the movable motor is fixed on the top of the base frame, which is used to drive the paint drying mechanism to move and perform paint spraying operations along the axial direction of the tower.

[0018] The sliding frame and the second slide rail fixed on the base frame are slidably connected;

[0019] A movable support mechanism is movably connected at the top of the base frame away from the fixed support mechanism. The movable support mechanism includes a slide table that is slidably connected to the base frame. The slide table is slidably connected to a first slide rail fixed on the base frame. A movable plate is rotatably connected to the top of the slide table through a hinge seat.

[0020] The movable plate has circular and rectangular insertion holes that mate with the hanging rod and the support plate, which are used to support the other side of the hanging rod and the support plate during the tower jet drying process.

[0021] The base frame is slidably connected to a sliding support plate located at the bottom of the support plate, and the top of the sliding support plate is provided with a sliding groove that cooperates with the support plate.

[0022] The sliding support plate is used to support the support plate, and the bottom of the sliding support plate is provided with a guide groove that cooperates with the first slide rail.

[0023] Furthermore, the inner side of the fixed plate is provided with a groove that cooperates with the sliding support plate, and a handle is fixed to one end of the sliding support plate.

[0024] By adopting the above technical solution, the groove is used to store the sliding support plate after the tower reaches the painting position.

[0025] In summary, the present invention has the following main beneficial effects:

[0026] 1. This invention uses a hanging rod to support the inner wall of the tower, replacing the traditional external support method. This eliminates the need for the tower to contact external supports during painting. Even if the tower itself is heavy, the painted outer surface will not be squeezed or rubbed when it rotates. This fundamentally solves the problems of paint scratches, wear, and peeling caused by support contact in the prior art, ensuring the integrity and firmness of the coating. At the same time, since the problem of paint damage is solved, the integrity of the anti-corrosion coating on the outer surface of the tower is guaranteed, effectively delaying the corrosion process of the metal substrate and extending the service life of the tower. It also avoids rework and repair due to paint damage, reducing labor, material, and time costs, and indirectly reducing the long-term operation and maintenance expenses of wind power equipment.

[0027] 2. This invention integrates a painting module and a drying module into the equipment. While the tower rotates with the drive mechanism, the paint spray head can uniformly spray paint onto its outer surface. Simultaneously, the gas sprayed from the drying head rapidly cures the paint surface. This integrated painting and drying design not only shortens the paint drying time but also avoids coating defects caused by untimely drying in traditional processes, significantly improving the uniformity of painting and overall quality. In addition, the painting and drying mechanism can move along the axial direction of the tower. Combined with the rotation of the tower, it achieves all-round, dead-angle-free painting coverage, further improving work efficiency.

[0028] 3. This invention utilizes a fixed support mechanism to form a stable structure through hanging rods, support plates, multiple sets of diagonal braces, and a support frame. Combined with the adjustable design of the movable support mechanism, it can meet the hanging requirements of towers of different specifications while withstanding the weight pressure of the tower, ensuring stability during rotation. Simultaneously, the auxiliary support wheels further distribute the force on the tower, reducing the load on a single support point and minimizing safety hazards during operation. Furthermore, the movable support mechanism can be quickly opened and closed through sliding and flipping, facilitating tower hoisting and installation and simplifying the operation process. The overall structure of the equipment is adaptable to wind turbine towers of different lengths and diameters, exhibiting strong versatility and practicality, and is suitable for various wind turbine tower surface painting operations. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 This is a schematic diagram of the fixed support mechanism of the present invention;

[0031] Figure 3 This is an enlarged view of the drive mechanism of the present invention;

[0032] Figure 4 This is an enlarged view of the support frame structure of the present invention;

[0033] Figure 5 This is a schematic diagram of the structure of the active support mechanism of the present invention;

[0034] Figure 6 For the present invention Figure 5 Enlarged view of point A:

[0035] Figure 7 This is a schematic diagram of the paint drying mechanism of the present invention;

[0036] Figure 8 This is a partially exploded enlarged view of the paint drying mechanism of the present invention;

[0037] Figure 9 This is an enlarged view of the structure of the sliding support plate of the present invention;

[0038] Figure 10 This is a schematic diagram of the overall structure of the tower after installation.

[0039] In the diagram: 1. Base frame; 2. Fixed support mechanism; 201. Fixed plate; 202. Hanging rod; 203. Support plate; 204. First diagonal brace plate; 205. Second diagonal brace plate; 206. Groove; 3. Drive mechanism; 301. Drive motor; 302. Power wheel; 303. Bearing; 304. Sprocket; 305. Chain; 4. Movable support mechanism; 401. Movable plate; 402. Circular insertion hole; 403. Rectangular insertion hole; 404. Hinge seat; 40 5. Slide table; 406. First slide rail; 5. Paint drying mechanism; 501. Sliding frame; 502. Paint spraying module; 503. First connecting pipe; 504. Paint spray head; 505. Drying rack; 506. Drying head; 507. Second connecting pipe; 508. Moving motor; 509. Rack; 510. Second slide rail; 6. Support frame; 7. Auxiliary support wheel; 8. Sliding support plate; 801. Sliding groove; 802. Guide groove; 803. Handle; 9. Tower. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0041] The embodiments of the present invention will now be described.

[0042] Example 1

[0043] like Figure 1-10 As shown, the integrated equipment provided in this embodiment achieves efficient coordination of painting and drying on the outer surface of the wind turbine tower through internal support and linkage operation design. The specific structure is as follows:

[0044] The base frame 1 is a rectangular frame welded from square steel, with steel plates laid on top to serve as the installation foundation for each mechanism;

[0045] Fixed support mechanism 2:

[0046] The fixing plate 201 is vertically welded to one end of the base frame, and a groove 206 is opened on the inner side;

[0047] One end of the hanging rod 202 is welded to the top of the fixing plate 201 and extends horizontally for hanging support from the inner wall of the tower 9;

[0048] The support plate 203 is welded to the middle of the fixed plate 201. The bottom is welded to the fixed plate with the first diagonal brace 204 and the second diagonal brace 205 to enhance the structural strength. The support frame 6 is a rectangular steel frame that connects the hanging rod 202 to the support plate 203 to further distribute the weight of the tower 9. The load-bearing capacity is ≥50t.

[0049] There are two sets of drive mechanisms 3, symmetrically installed on the top of the support plate 203:

[0050] The drive motor 301 has a power of 5.5kW. Its output end is connected to the power wheel 302 via a sprocket 304 and a chain 305. The power wheel 302 is made of hard rubber and is sleeved on the outside of the hanging rod 202 through a bearing 303. It contacts the inner wall of the tower and drives the tower 9 to rotate at a speed of 0.5-1r / min.

[0051] The auxiliary support wheels 7 are in four sets, evenly distributed on the outside of the hanging rod 202, and together with the power wheel 302, they support the tower 9, reducing swaying, with radial runout ≤2mm;

[0052] Activity Support Organization 4

[0053] The slide table 405 is slidably connected to the base frame 1 via the first slide rail 406, and the top is connected to the movable plate 401 via the hinge seat 404. The movable plate 401 has dimensions that match the support plate 203, and has a circular insertion hole 402 to accommodate the hanging rod 202 and a rectangular insertion hole 403 to accommodate the support plate 203. It can be rotated 90° to open and close, which facilitates the hoisting of the tower 9.

[0054] Sliding support plate 8: The bottom is provided with a guide groove 802, which cooperates with the first slide rail 406, and the top is opened with a sliding groove 801, which is adapted to the support plate 203. It can slide along the base frame 1 and assist in supporting the support plate 203. It is used when unloaded.

[0055] The paint drying mechanism 5 includes:

[0056] The sliding frame 501 is slidably connected to the base frame 1 via the second slide rail 510, and is driven by the moving motor 508 to move along the rack 509 at a speed of 0.5-1m / min;

[0057] The painting module 502 includes:

[0058] The paint spray head 504 is connected to an external high-pressure pump through the first connecting pipe 503, and the spraying range covers the outer surface of the tower.

[0059] The drying rack 505 is an arc-shaped frame with an arc matching that of the tower 9. Three sets of drying heads 506 are installed inside, connected to a gas compressor and a hot air blower via a second connecting pipe 507. The temperature is 60-80℃, and the air volume is 500m³ / h. 3 / h, simultaneously drying the painted surface.

[0060] The working principle of this invention is as follows: When in use, the power is turned on, and the operator first manually slides the movable plate 401 in the movable support mechanism 4 outward along the first slide rail 406 via the slide table 405, so that the circular insertion hole 402 and the rectangular insertion hole 403 on the movable plate 401 are separated from the hanging rod 202 and the support plate 203 respectively. After separation, the movable plate 401 is flipped outward via the hinge seat 404 so that it is in a horizontal state.

[0061] At this time, the outer wall of the tower 9 is secured by straps using external hoisting equipment, such as a gantry crane, and then hoisted to this equipment, so that the tower 9 moves horizontally to the outside of the fixed support mechanism 2.

[0062] At the same time, the end face of the tower 9 will push the sliding support plate 8 to move inward synchronously along the first slide rail 406 and the support plate 203. After the tower 9 moves horizontally to the designated position, the sliding support plate 8 will be housed inside the groove 206 of the fixing plate 201.

[0063] After the tower 9 is horizontally hoisted to the designated position, the staff will reset the movable support mechanism 4 so that the circular insertion hole 402 and the rectangular insertion hole 403 on the movable plate 401 are respectively inserted into the hanging rod 202 and the support plate 203, thereby making the fixed support mechanism 2 stable.

[0064] At this time, the external hoisting equipment can slowly unload the force, so that the top of the inner wall of the tower 9 comes into contact with the two sets of power wheels 302 and the multiple sets of auxiliary support wheels 7. Since the power wheels 302 and the auxiliary support wheels 7 are movably connected to the hanging rod 202, the hanging rod 202 then plays the role of hanging the tower 9.

[0065] Multiple sets of support frames 6 are fixed between the hanging rod 202 and the support plate 203, and the top and bottom of the support plate 203 and the fixed plate 201 are fixedly connected by the first diagonal brace 204 and the second diagonal brace 205, respectively, thereby further strengthening the strength of the hanging rod 202 and increasing the hanging stability of the hanging rod 202.

[0066] Based on the above structure, it can be concluded that the tower 9 does not need to be placed on the support during the painting operation. The inner wall of the tower 9 is supported and hung by the hanging rod 202, thereby avoiding the problem of paint damage caused by the support during the rotation of the tower 9 during the painting operation.

[0067] Furthermore, two sets of drive mechanisms 3 are provided on the support plate 203, and the tower 9 can be rotated by the rotation of the power wheel 302. At the same time, under the action of the paint spraying and drying mechanism 5, the paint spraying head 504 of the paint spraying module 502 can perform a uniform paint spraying operation on the outer surface of the rotating tower 9. Meanwhile, the drying gas sprayed from multiple drying heads 506 on the drying rack 505 can perform a synchronous drying operation on the painted outer surface, thereby improving the overall paint quality of the outer surface of the tower 9.

[0068] Furthermore, with the cooperation of the moving motor 508 and the rack 509, the paint drying mechanism 5 can move axially along the tower 9, thereby enabling uniform and comprehensive paint spraying on the outer surface of the tower 9, resulting in a better overall performance.

[0069] When the tower 9 is not being painted, the operator can move the sliding support plate 8 to a position close to the movable support mechanism 4 by holding the lever 803. This allows the sliding support plate 8 to assist in supporting the support plate 203, improving the stability of the support plate 203 when it is not in use.

[0070] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the invention, but such modifications, substitutions, and variations are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. An integrated equipment for painting and drying the outer surface of a wind turbine tower, comprising a base frame (1) and a tower (9), characterized in that: The base frame (1) is fixed on one side of the top with a fixed support mechanism (2) for supporting and hanging from the inner wall of the tower (9); The fixed support mechanism (2) includes a fixed plate (201) fixed on the base frame (1), and a hanging rod (202) and a support plate (203) are fixed on the top and middle of one side of the fixed plate (201), respectively. The support plate (203) has a drive mechanism (3) for driving the tower (9) to rotate on both sides of the top of the top. The base frame (1) has a paint drying mechanism (5) located at one end of the tower (9), and the paint drying mechanism (5) includes a sliding frame (501) slidably connected on the base frame (1). The sliding frame (501) has a built-in painting module (502) for painting the outer surface of the tower (9), and the sliding frame (501) has a built-in drying rack (505) located below the painting module (502). The drying rack (505) has multiple drying heads (506) connected to the inner side of the drying rack (505) facing the outer surface of the tower (9) for synchronous drying after spraying the outer surface of the tower (9).

2. The integrated painting and drying equipment for the outer surface of wind turbine towers according to claim 1, characterized in that: The fixed support mechanism (2) further includes a first inclined plate (204) and a second inclined plate (205), and the first inclined plate (204) and the second inclined plate (205) are fixed at the top and bottom of the connection between the fixed plate (201) and the support plate (203) to strengthen the strength between the fixed plate (201) and the support plate (203); The top of the support plate (203) is fixed with multiple sets of support frames (6) that are connected to the hanging rod (202), which serve to strengthen the hanging rod (202).

3. The integrated painting and drying equipment for the outer surface of wind turbine towers according to claim 1, characterized in that: The drive mechanism (3) includes a drive motor (301), a drive wheel (302), a sprocket (304) and a chain (305). The drive motor (301) is mounted on the top of the support plate (203), and the drive wheel (302) is rotatably connected to the outside of the hanging rod (202). Furthermore, sprockets (304) are fixed on one side of the power wheel (302) and the output end of the drive motor (301). The two sets of sprockets (304) are connected by a chain (305) to drive the power wheel (302) to rotate.

4. The integrated painting and drying equipment for the outer surface of wind turbine towers according to claim 3, characterized in that: The hanging rod (202) is also movably connected to a number of auxiliary support wheels (7) whose outer walls contact the inner wall of the tower (9), and the multiple sets of auxiliary support wheels (7) and two sets of power wheels (302) are rotatably connected to the hanging rod (202) through bearings (303).

5. The integrated painting and drying equipment for the outer surface of wind turbine towers according to claim 1, characterized in that: A movable support mechanism (4) is movably connected at the top of the base frame (1) away from the fixed support mechanism (2). The movable support mechanism (4) includes a slide table (405) slidably connected to the base frame (1). A first slide rail (406) fixed on the base frame (1) is slidably connected to the slide table (405). A movable plate (401) is rotatably connected to the top of the slide table (405) through a hinge seat (404). The movable plate (401) has a circular insertion hole (402) and a rectangular insertion hole (403) inside, which are used to cooperate with the hanging rod (202) and the support plate (203) to support the other side of the hanging rod (202) and the support plate (203) during the jet drying action of the tower (9).

6. The integrated painting and drying equipment for the outer surface of wind turbine towers according to claim 1, characterized in that: The paint drying mechanism (5) also includes a first connecting pipe (503) and a paint spray head (504) that cooperate with the paint spray module (502). The first connecting pipe (503) is connected to an external high-pressure pump through a pipeline to pressurize the paint in the paint storage tank and then transport it to the paint spray head (504) to spray it onto the outer surface of the tower (9). It also includes a second connecting pipe (507) connected to the drying rack (505). The second connecting pipe (507) is connected to an external gas compressor through a pipeline. It is used to compress the gas and then use multiple sets of drying heads (506) to dry the painted outer surface of the tower (9).

7. The integrated painting and drying equipment for the outer surface of wind turbine towers according to claim 1, characterized in that: The paint drying mechanism (5) also includes a moving motor (508) fixed on the sliding frame (501), and a rack (509) that meshes with the gear at the output end of the moving motor (508) is fixed on the top of the base frame (1) for driving the paint drying mechanism (5) to perform moving paint spraying operations along the axial direction of the tower (9). The sliding frame (501) and the second slide rail (510) fixed on the base frame (1) are slidably connected.

8. The integrated painting and drying equipment for the outer surface of wind turbine towers according to claim 5, characterized in that: The base frame (1) is slidably connected to a sliding support plate (8) located at the bottom of the support plate (203), and the top of the sliding support plate (8) is provided with a sliding groove (801) that cooperates with the support plate (203); The sliding support plate (8) is used to support the support plate (203), and the bottom of the sliding support plate (8) is provided with a guide groove (802) that cooperates with the first slide rail (406).

9. The integrated painting and drying equipment for the outer surface of wind turbine towers according to claim 8, characterized in that: The inner side of the fixed plate (201) is provided with a groove (206) that cooperates with the sliding support plate (8), and a handle (803) is fixed at one end of the sliding support plate (8).

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