A wind turbine blade mould structure

Abstract

The application discloses a wind power blade mold structure, which comprises reinforcing structures respectively arranged on the outer surfaces of a lower mold and an upper mold, and a conformal supporting structure or a supporting structure with one end fixed on the ground and the other end abutting against the reinforcing structure, wherein the conformal supporting structure or the supporting structure can be adjusted in horizontal height. The structure improves the bending stiffness, greatly improves the deformation resistance of the shell, simplifies the supporting structure, shortens the manufacturing and installation period, reduces the structural space size, reduces the overall weight of the mechanism, facilitates transportation, reduces energy consumption and pollution. When different blade types need to be adapted, the shell structure only needs to be replaced, and then the horizontal height of the conformal supporting structure or the supporting structure is adjusted to adapt to molds of different wind power blade types, so that the mold can be repeatedly used, the installation efficiency is improved, and the cost is saved.

Description

Technical Field

[0001] This invention relates to the field of wind turbine blade molds, specifically a novel wind turbine blade mold structure. Background Technology

[0002] Wind is a natural phenomenon on Earth, caused by solar radiation. When the sun shines on the Earth's surface, different areas are heated differently, creating temperature differences that cause atmospheric convection, forming wind. Wind energy is the kinetic energy of air, and its magnitude depends on wind speed and air density. Global wind energy is approximately 2.74 x 10⁹ MW, of which 2 x 10⁷ MW is usable, ten times greater than the total exploitable hydropower on Earth. The kinetic energy generated by air movement is wind energy. Wind energy is a form of solar energy conversion. Solar radiation causes uneven heating of the Earth's surface, resulting in uneven pressure distribution in the atmosphere, causing air to move horizontally, forming wind.

[0003] Wind energy is a type of usable energy provided to humans by the work done by airflow, and it belongs to renewable energy. The kinetic energy of airflow is called wind energy. The higher the airflow speed, the greater the kinetic energy. People can use windmills to convert the kinetic energy of wind into rotational motion to drive generators to produce electricity. This is done by transmitting the rotational power of the rotor to the generator through a drive shaft.

[0004] The cost of generating electricity from wind has decreased significantly. Even without considering other external costs, the cost of wind power generation in many suitable locations is lower than that of internal combustion engine power generation. As the world strives for carbon neutrality and carbon peaking, clean energy has become a unified direction for global development, leading to the rise of wind power as a clean energy source and its rapid global development.

[0005] Using wind turbines continuously converts wind energy into standard household electricity, resulting in significant energy savings. In mountainous areas, this system can provide year-round, cost-free streetlights; highways can use it for nighttime road signs; children in mountainous areas can study under fluorescent lights; and wind turbines can be used on the rooftops of low-rise buildings in cities. This is not only economical but also a truly green power source. Home use of wind turbines not only prevents power outages but also enhances quality of life. In tourist areas, border regions, schools, military units, and even underdeveloped mountainous areas, wind turbines are becoming a popular purchase. Radio enthusiasts can use their skills to serve people in mountainous areas through wind power generation, enabling them to access electricity for television and lighting in sync with cities, and even earning a living through their labor. This has led to a booming wind power market, with major wind turbine blade manufacturers working overtime to produce blades to meet the demands of this huge market. To achieve fast, efficient, and high-quality wind turbine blade manufacturing, various new technologies and tooling have emerged to meet the needs of wind turbine blade manufacturers.

[0006] In the prior art, a typical wind turbine blade mold consists of a composite material mold shell (101), a supporting structure for the shell (201, 202), an actuating mechanism 401, and other auxiliary structures, such as... Figure 1 As shown. The fiberglass shell of the mold mainly provides the external dimensions and other process conditions for blade manufacturing, such as vacuum and temperature. Its thickness is usually 10 mm to 60 mm. The fiberglass shell is supported by a bottom frame, which is usually a spatial structure formed by welding steel profiles. It is integrated with the mold shell and plays a role in maintaining the geometric accuracy of the mold shell during blade manufacturing. The commonly used actuating mechanism is a traveling crane or a tilting arm, which is arranged at certain intervals along the length of the mold. Its function is to drive the upper mold (302) to tilt during the closing and opening of the two mold pieces (301, 302). A typical blade mold structure is as follows. Figure 1 For molds using a tilting arm, the upper mold steel frame is supported (202) on the tilting arm, which in turn is supported on the ground. Therefore, the tilting arm also serves as a fulcrum to support the upper mold when it is in the open state. A typical mold tilting action is as follows: Figure 2 .

[0007] Because each blade has a different length and shape, the steel frames of the molds currently manufactured for producing each blade are designed and produced separately to match the dimensions of the wind turbine blade profile. Since the ground projection area of ​​the steel frame structure is essentially the same as the ground projection area of ​​the blade, a typical steel frame support structure is as follows: Figure 3 As shown, the fiberglass shell of wind turbine blade molds has low rigidity. To maintain the surface accuracy of the shell, a dense support structure is required. This structure is complex, and the design and manufacturing process is difficult and time-consuming. Furthermore, once the blade is no longer in production, the corresponding mold will be scrapped, and the steel frame cannot be used in other molds and can only be disposed of as scrap steel. Currently, the production cycle for each blade is typically about two years, and each set of molds uses about tens of tons of steel, resulting in significant waste. Summary of the Invention

[0008] Purpose of the invention: The purpose of this invention is to address the shortcomings of existing technologies and provide a wind turbine blade mold structure. This structure improves bending stiffness, thereby greatly enhancing the shell's resistance to deformation, simplifying the support structure, shortening the manufacturing and installation period, reducing structural space dimensions, lightening the overall weight of the mechanism, facilitating transportation, reducing energy consumption and pollution, improving installation efficiency, and saving costs.

[0009] Technical Solution: To achieve the above objectives, the wind turbine blade mold structure of this invention includes a lower mold, an upper mold, a lower mold housing support structure and an upper mold housing support structure located on the inner surfaces of the lower and upper molds respectively, and a flipping mechanism that drives the upper mold housing support structure to flip above the lower mold housing support structure. It also includes: reinforcing structures installed on the outer surfaces of the lower and upper molds respectively, and a conformal support structure or support structure with one end fixed to the ground and the other end abutting against the reinforcing structure. The conformal support structure or support structure can be adjusted in horizontal height and can be arbitrarily combined according to the shape of the reinforcing structure, offering high flexibility. When different blade types need to be adapted, only the housing structure needs to be replaced, and then the horizontal height of the conformal support structure or support structure can be adjusted to adapt to the mold of different wind turbine blade types, making it reusable, improving installation efficiency, and saving costs.

[0010] The reinforcing structure can be a stiffener structure, a box structure, a sandwich structure or a frame structure made of low-density materials, or a combination of two or more of the above. The stiffener, box, or frame structures are made of metal or composite materials, or a combination of metal and composite materials. This reinforced fiberglass mold shell structure has a bending stiffness several orders of magnitude higher than that of a typical mold shell, thus significantly improving the shell's resistance to deformation and providing the necessary conditions for fewer and simpler support structures.

[0011] As a further preferred embodiment of the present invention, when the reinforcing structure is curved, the conformal support structure is used to counteract the reinforcing structure. When the wind turbine blade mold needs to be opened to a certain angle, it is supported below the upper or lower mold by the conformal support structure, which ensures the environment for manufacturing the blade's external dimensions and other process conditions.

[0012] As a further preferred embodiment of the present invention, when the reinforcing structure is planar, the structure that opposes the reinforcing structure is a conformal support structure or a support structure.

[0013] The conformal support structure or support structure can be arbitrarily combined according to the shape of the reinforcing structure. There are multiple implementation methods for the support structure, and any implementation method can be combined with the conformal support structure to work together.

[0014] When the reinforcing structure on the lower mold is planar and the reinforcing structure on the upper mold is curved, the structure that abuts against the reinforcing structure on the lower mold is a conformal support structure or a support structure, and the structure that abuts against the reinforcing structure on the upper mold is a conformal support structure.

[0015] When the reinforcing structure on the lower mold is curved and the reinforcing structure on the upper mold is planar, the structure that abuts against the reinforcing structure on the lower mold is a conformal support structure, and the structure that abuts against the reinforcing structure on the upper mold is a conformal support structure or a support structure.

[0016] When the reinforcing structures on both the upper and lower dies are planar, the structure that abuts against the reinforcing structure on the lower die is a conformal support structure or a support structure, and the structure that abuts against the reinforcing structure on the lower die is also a conformal support structure or a support structure.

[0017] When the reinforcing structures on both the upper and lower dies are curved surfaces, the structure that resists the reinforcing structure on the upper die is a conformal support structure, and the structure that resists the reinforcing structure on the lower die is also a conformal support structure.

[0018] As a further preferred embodiment of the present invention, the conformal support structure includes: a base and a frame for placing the PLC circuit, and a telescopic cylinder connected to the PLC circuit. The frame is installed above the base, and multiple telescopic cylinders connected to the PLC circuit are provided on the frame. When the reinforcing structure is curved, since the various parts are not on the same horizontal line, different positions require different heights of support. Therefore, by calculating the required extension height of each telescopic cylinder according to the curved shape of the reinforcing structure, the PLC circuit calculates the extension height of each telescopic cylinder. Then, when the upper mold is flipped to a limited position by the flipping mechanism, the conformal support structure can support the upper mold.

[0019] The base can be the ground or a support plate. If the base is placed on the ground and is compatible with the base, no support plate is required. If the ground is not compatible with the base, a base can be added to work together with the base.

[0020] As a further preferred embodiment of the present invention, the power supply to the telescopic cylinder is provided by a servo motor, a hydraulic system, or a pneumatic system. By cooperating with the PLC circuit through the servo motor, hydraulic system, or pneumatic system, the application of the accompanying support structure becomes more flexible, and automatic control can reduce material loss and assembly time, thereby improving work efficiency.

[0021] As a further preferred embodiment of the present invention, the number of the base frames is multiple, and the number is matched according to the size of the lower mold or the upper mold.

[0022] As a further preferred embodiment of the present invention, the length between two adjacent base frames is L, the deformation of the inner shell of the lower or upper mold is m, and the number and placement of the base frames are determined according to the weight distribution of the blades and the mold to ensure effective support. Effective support mainly considers the deformation m of the inner shell of the two support cross sections L in the mold length direction, and the relationship is m < L / 300.

[0023] As a further preferred embodiment of the present invention, the support structure is composed of multiple steel frames, steel pipes or support rods of varying lengths fixed on the ground. When it is necessary to support the reinforced structure in a planar state, the height of the steel frames, steel pipes or support rods of varying lengths at different positions is manually calculated according to the size that the lower mold or upper mold needs to open. Then, the height of the steel frames, steel pipes or support rods of varying lengths is increased or decreased and fixed on the ground.

[0024] As a further preferred embodiment of the present invention, the steel frame, steel pipe or support rods of varying lengths arranged and combined are used to increase or decrease the height of the support structure through methods such as angle iron, buckle, or threaded connection.

[0025] As a further preferred embodiment of the present invention, the low-density material is a combination of artificial foam, low-density inorganic material, low-density wood, and honeycomb material. The reinforced structure obtained by this preparation method has a spatial thickness ranging from 60 mm to 2 meters, making it flexible in application and more widely applicable.

[0026] Beneficial effects: The wind turbine blade mold structure described in this invention has the following advantages compared with the prior art:

[0027] (1): The reinforced mold fiberglass shell structure has a bending stiffness that is several orders of magnitude higher than that of ordinary mold shells, which greatly improves the shell's resistance to deformation and provides the necessary conditions for fewer and simpler support structures.

[0028] (2): The general support structure simplifies the mold structure, which can reduce the material by 60% to 80% compared with the original frame structure, greatly shortening the production period and reducing energy consumption and pollution;

[0029] (3): The use of shell and general support structure reduces and simplifies the installation process, shortens the installation period, and effectively improves installation efficiency;

[0030] (4): The horizontal height of the universal adjustable conformal support structure or support structure can be reused in mold structures of different blade types. When changing the blade shape, only the upper structure of the mold needs to be replaced, and the height of the lower conformal support structure or support structure can be adjusted. This greatly reduces waste and pollution, saves costs, and provides a better solution for the sustainable development of the economy and environment.

[0031] (5): When some support components in the support structure or conformal support structure reach the fatigue limit and need to be replaced, only the module or component needs to be replaced. It is highly flexible, and the accessories can be mass-produced. It improves the efficiency of mold flipping while having short maintenance time and strong adaptability. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the blade mold structure in the prior art;

[0033] Figure 2 This is a schematic diagram of the mold flipping action in the prior art;

[0034] Figure 3 This is a structural diagram of a steel frame support structure in the prior art;

[0035] Figure 4 This is a schematic diagram of a conformal support structure;

[0036] Figure 5 This is a schematic diagram of another type of support structure;

[0037] Figure 6 This is a schematic diagram of the installation of the supporting structure;

[0038] Figure 7 This is a schematic diagram of the mold flipping action in this invention;

[0039] Figure 8 This is a schematic diagram of the installation of another type of support structure;

[0040] Figure 9 This is a schematic diagram of the installation of another type of support structure;

[0041] Figure 10 A reinforced structure for strengthening ribs;

[0042] Figure 11 A reinforcing structure for a sandwich structure;

[0043] Figure 12 It is a reinforced structure for the box-type structure;

[0044] Figure 13 It is a reinforcement structure for the frame structure;

[0045] Figure 14 This is the hydraulic circuit diagram for the telescopic cylinder. Detailed Implementation

[0046] The present invention will be further explained below with reference to the accompanying drawings and embodiments.

[0047] The wind turbine blade mold structure of the present invention includes a lower mold 301, an upper mold 302, a lower mold shell support structure 201, an upper mold shell support structure 202, a flipping mechanism 401, a reinforcing structure 102 respectively installed on the outer surfaces of the lower mold 301 and the upper mold 302, and a conformal support structure 501 or a support structure 502 with one end fixed to the ground and the other end abutting against the reinforcing structure 102. The conformal support structure 501 or the support structure 502 can be adjusted in horizontal height.

[0048] The interior of the reinforced structure 102 is made of a sandwich structure composed of reinforcing ribs, frames, boxes, artificial foam, low-density inorganic materials, low-density wood, honeycomb materials, etc.

[0049] The conformal support structure 501 includes: a base 5011 and a base frame 5012 for placing the PLC circuit, and telescopic cylinders 5013 connected to the PLC circuit. The base frame 5012 is installed above the base 5011, and the base frame 5012 is provided with multiple telescopic cylinders 5013 connected to the PLC circuit, as shown in Figure 4. Figure 6 As shown, the telescopic cylinder 5013, which is connected to the PLC circuit, can also be used directly if it can be directly fixed to the bottom surface. Figure 9 As shown;

[0050] Driven by the flipping mechanism 401, the upper mold housing support structure 202 separates from the conformal support structure 501 or the support structure 502 and flips, then joins the lower mold 301 to achieve a mold closing effect, as shown below. Figure 7 As shown;

[0051] The supporting structure 502 is composed of multiple steel frames or steel pipes fixed to the ground, such as... Figure 8 As shown. When it is necessary to replace the reinforcing structure 102 with a different shape, both the conformal support structure 501 and the support structure 502 can be recycled and reused multiple times, saving investment costs.

[0052] Example 1

[0053] When the bottom surface of the reinforcing structure 102 on the lower mold 301 is flat and the bottom surface of the reinforcing structure 102 on the upper mold 302 is curved, the structure that abuts against the reinforcing structure 102 on the lower mold 301 is the supporting structure 502, and the structure that abuts against the reinforcing structure 102 on the upper mold 302 is the conformal supporting structure 501. The reinforcing structure 102 of the lower mold shell uses a reinforcing rib structure or a sandwich structure, such as... Figure 10 , Figure 11 As shown, the reinforcing structure 102, which uses a box-type or frame-type structure as the upper mold shell, is as follows: Figure 12 , Figure 13 As shown, the tilting mechanism 401 is connected and fixed to the reinforcing structure 102 at the tilting beam via the lower mold shell support structure 201 or the upper mold shell support structure 202. Multiple conformal support structures 501 are provided between two adjacent tilting mechanisms 401. Effective support is achieved by reducing or increasing the number of base frames 5012, and the height of the telescopic cylinder is adjusted to match the shape of the shell. Figure 4 , Figure 6 As shown;

[0054] Since the reinforcing structure 102 on the upper mold 302 is curved, the various parts that need to be supported are not on the same horizontal line, and different positions require different heights of support. Therefore, based on the curved shape of the reinforcing structure 102, the PLC circuit calculates the extension height required for each telescopic cylinder 5013. The conformal support structure 501 can support the upper mold 302, and finally the flipping mechanism 401 flips the upper mold 302 to the specified position.

[0055] A distance sensor is provided on the side of the end of the telescopic cylinder 5013. When the PLC circuit sends a signal to the hydraulic system to extend the piston rod on the telescopic cylinder 5013 to a limited position, the distance sensor senses that the reinforcing structure 102 and the piston rod are not in contact. The distance sensor then sends the signal to the PLC circuit. The PLC circuit recalculates the extension height of the telescopic cylinder 5013 based on the distance dimension received from the distance sensor and compensates for the telescopic dimension to ensure the stability of the support. The hydraulic circuit diagram of each conformal support structure 501 is shown in Figure 14.

[0056] Because the reinforcing structure 102 on the lower mold 301 is planar, and the supporting structure 502 is composed of multiple steel frames fixed to the ground, when support is needed for the planar reinforcing structure 102, the height of the steel frame supporting the upper mold 302 or lower mold 301 is manually calculated based on the height of the lower mold 301 or the required opening size of the upper mold 302. Then, the height of the steel frame or steel pipe can be increased or decreased by adjusting threaded angle irons, snap-fit ​​connections, etc. Figure 8 As shown.

[0057] When the mold needs to be changed to a different blade shape, that is, when a different shape of reinforcing structure 102 is required, the original reinforcing structure 102 can be removed, and then a reinforcing structure 102 that matches the outer shape of the lower mold 301 or the upper mold 302 can be placed. The accompanying support structure 501 and the support structure 502 can be adjusted to fit the new reinforcing structure 102. The conformal support structure 501 and the support structure 502 have strong adaptability and can be reused multiple times, reducing investment costs and improving work efficiency.

[0058] Example 2

[0059] When the bottom surface of the reinforcing structure 102 on the lower mold 301 is curved, and the bottom surface of the reinforcing structure 102 on the upper mold 302 is also curved, the conformal support structure 501 abuts against the reinforcing structure 102 on the lower mold 301, and the conformal support structure 501 also abuts against the reinforcing structure 102 on the upper mold 302. A combination of reinforcing rib structure and sandwich structure serves as the reinforcing structure 102 of the lower mold shell, and a combination of reinforcing rib structure and sandwich structure serves as the reinforcing structure 102 of the upper mold shell. Figure 10 , Figure 11As shown, the tilting mechanism 401 is connected and fixed to the reinforcing structure 102 at the tilting beam via the lower mold shell support structure 201 or the upper mold shell support structure 202. Multiple support structures 502 are provided between two adjacent tilting mechanisms 401. Effective support is achieved by reducing or increasing the number of base frames 5012, and the height of the telescopic cylinder is adjusted to match the shell shape. Figure 4 , Figure 6 As shown;

[0060] Since the bottom surfaces of the reinforcing structure 102 on the lower mold 301 and the upper mold 302 are both curved, the various parts that need to be supported are not on the same horizontal line, and different positions require different heights of support. Therefore, based on the curved shape of the reinforcing structure 102, the PLC circuit calculates the extension height required for each telescopic cylinder 5013. The conformal support structure 501 can support the upper mold 302, and finally, the flipping mechanism 401 flips the upper mold 302 to the specified position.

[0061] A distance sensor is provided on the side of the end of the telescopic cylinder 5013. When the PLC circuit sends a signal to the hydraulic system to extend the piston rod on the telescopic cylinder 5013 to a limited position, the distance sensor senses that the reinforcing structure 102 and the piston rod are not in contact. The distance sensor then sends the signal to the PLC circuit. The PLC circuit recalculates the extension height of the telescopic cylinder 5013 based on the distance dimension received from the distance sensor and compensates for the telescopic dimension to ensure the stability of the support. The hydraulic circuit diagram of each conformal support structure 501 is shown in Figure 14.

[0062] When the mold needs to be changed to a different blade shape, that is, when a different shape of reinforcing structure 102 is required, the original reinforcing structure 102 can be removed, and then a reinforcing structure 102 that matches the outer shape of the lower mold 301 or the upper mold 302 can be placed. The accompanying support structure 501 and the support structure 502 can be adjusted to fit the new reinforcing structure 102. The conformal support structure 501 and the support structure 502 have strong adaptability and can be reused multiple times, reducing investment costs and improving work efficiency.

[0063] Example 3

[0064] When the bottom surface of the reinforcing structure 102 on the lower mold 301 is curved, and the bottom surface of the reinforcing structure 102 on the upper mold 302 is flat, the conformal support structure 501 abuts against the reinforcing structure 102 on the lower mold 301, and the supporting structure 502 abuts against the reinforcing structure 102 on the upper mold 302. A reinforcing rib structure or a sandwich structure is used as the reinforcing structure 102 of the lower mold shell, such as... Figure 10 , Figure 11 As shown, the reinforcing structure 102, which uses a box-type or frame-type structure as the upper mold shell, is as follows: Figure 12 , Figure 13 As shown, the flipping mechanism 401 is connected and fixed to the reinforcing structure 102 at the flipping beam via the lower mold shell support structure 201 or the upper mold shell support structure 202. Multiple support structures 502 are provided between two adjacent flipping mechanisms 401.

[0065] Since the reinforcing structure 102 on the lower mold 301 is curved, the various parts that need to be supported are not on the same horizontal line, and different positions require different heights of support. Therefore, based on the curved shape of the reinforcing structure 102, the PLC circuit calculates the extension height required for each telescopic cylinder 5013. The conformal support structure 501 can support the upper mold 302, and finally, the flipping mechanism 401 flips the upper mold 302 to the specified position.

[0066] A distance sensor is provided on the side of the end of the telescopic cylinder 5013. When the PLC circuit sends a signal to the hydraulic system to extend the piston rod on the telescopic cylinder 5013 to a limited position, the distance sensor senses that the reinforcing structure 102 and the piston rod are not in contact. The distance sensor then sends the signal to the PLC circuit. The PLC circuit recalculates the extension height of the telescopic cylinder 5013 based on the distance dimension received from the distance sensor and compensates for the telescopic dimension to ensure the stability of the support. The hydraulic circuit diagram of each conformal support structure 501 is shown in Figure 13.

[0067] Because the reinforcing structure 102 on the upper mold 301 is planar, and the supporting structure 502 is composed of multiple steel pipes fixed to the ground, such as... Figure 5 As shown, when it is necessary to support the planar reinforcement structure 102, the height of the steel pipe used to support the upper mold 302 or lower mold 301 is manually calculated according to the height of the lower mold 301 or the size that the upper mold 302 needs to open. Then, the height of the steel frame or steel pipe can be increased or decreased by adjusting the threaded angle iron, snap-fit ​​connection, etc.

[0068] When the mold needs to be changed to a different blade shape, that is, when a different shape of reinforcing structure 102 is required, the original reinforcing structure 102 can be removed, and then a reinforcing structure 102 that matches the outer shape of the lower mold 301 or the upper mold 302 can be placed. The accompanying support structure 501 and the support structure 502 can be adjusted to fit the new reinforcing structure 102. The conformal support structure 501 and the support structure 502 have strong adaptability and can be reused multiple times, reducing investment costs and improving work efficiency.

[0069] Example 4

[0070] When the bottom surface of the reinforcing structure 102 on the lower mold 301 is a plane, and the bottom surface of the reinforcing structure 102 on the upper mold 302 is also a plane, the structures that abut against both the lower mold 301 and the upper mold 302 are both support structures 502. The reinforcing structure 102 of the lower mold shell is a box-type or frame-type structure, such as... Figure 12 , Figure 13 As shown, the reinforcing structure 102, which uses a box-type or frame-type structure as the upper mold shell, is as follows: Figure 12 , Figure 13 As shown, the flipping mechanism 401 is connected and fixed to the reinforcing structure 102 at the flipping beam via the lower mold shell support structure 201 or the upper mold shell support structure 202. Multiple support structures 502 are provided between two adjacent flipping mechanisms 401.

[0071] Since both the reinforcing structure 102 on the lower mold 301 and the reinforcing structure 102 on the upper mold 302 are planar, and the supporting structure 502 on the upper mold 302 is composed of multiple supporting rods of varying lengths fixed to the ground, such as... Figure 8 As shown, when the reinforcing structure on the lower mold 301 needs to support the planar reinforcing structure 102, the height of the steel frame supporting the upper mold 302 or lower mold 301 is manually calculated based on the height of the lower mold 301 or the required opening size of the upper mold 302. Then, the position of the support rods at different heights is determined. Figure 8 As shown.

[0072] When the mold needs to be changed to a different blade shape, that is, when a different shape of reinforcing structure 102 is required, the original reinforcing structure 102 can be removed, and then a reinforcing structure 102 that matches the outer shape of the lower mold 301 or the upper mold 302 can be placed. The accompanying support structure 501 and the support structure 502 can be adjusted to fit the new reinforcing structure 102. The conformal support structure 501 and the support structure 502 have strong adaptability and can be reused multiple times, reducing investment costs and improving work efficiency.

[0073] Example 5

[0074] When the bottom surface of the reinforcing structure 102 on the lower mold 301 is a plane, and the bottom surface of the reinforcing structure 102 on the upper mold 302 is also a plane, the structures that abut against both the lower mold 301 and the upper mold 302 are both accompanying support structures 501. The reinforcing structure 102 of the lower mold shell is a box-type or frame-type structure, such as... Figure 12 , Figure 13 As shown, the reinforcing structure 102, which uses a box-type or frame-type structure as the upper mold shell, is as follows: Figure 12 , Figure 13 As shown, the flipping mechanism 401 is connected and fixed to the reinforcing structure 102 at the flipping beam via the lower mold shell support structure 201 or the upper mold shell support structure 202. Multiple conformal support structures 501 are provided between two adjacent flipping mechanisms 401. Effective support is achieved by reducing or increasing the number of base frames 5012, and the height of the telescopic cylinder is adjusted to match the bottom surface of the reinforcing structure 102.

[0075] Based on the bottom surface of the reinforcing structure 102, the PLC circuit calculates the required extension height of each telescopic cylinder 5013. The corresponding conformal support structure 501 can support the upper mold 302 and the lower mold 301 respectively. Finally, the upper mold 302 is flipped to the specified position by the flipping mechanism 401.

[0076] A distance sensor is provided on the side of the end of the telescopic cylinder 5013. When the PLC circuit sends a signal to the hydraulic system to extend the piston rod on the telescopic cylinder 5013 to a limited position, the distance sensor senses that the reinforcing structure 102 and the piston rod are not in contact. The distance sensor then sends the signal to the PLC circuit. The PLC circuit recalculates the extension height of the telescopic cylinder 5013 based on the distance dimension received from the distance sensor and compensates for the telescopic dimension to ensure the stability of the support. The hydraulic circuit diagram of each conformal support structure 501 is shown in Figure 13.

[0077] When the mold needs to be changed to a different blade shape, that is, when a different shape of reinforcing structure 102 is required, the original reinforcing structure 102 can be removed, and then a reinforcing structure 102 that matches the outer shape of the lower mold 301 or the upper mold 302 can be placed. The accompanying support structure 501 and the support structure 502 can be adjusted to fit the new reinforcing structure 102. The conformal support structure 501 and the support structure 502 have strong adaptability and can be reused multiple times, reducing investment costs and improving work efficiency.

[0078] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A wind turbine blade mold structure, comprising a lower mold (301), an upper mold (302), a lower mold housing support structure (201) and an upper mold housing support structure (202) respectively located on the inner surfaces of the lower mold (301) and the upper mold (302), and a flipping mechanism (401) that drives the upper mold housing support structure (202) to flip above the lower mold housing support structure (201), characterized in that: It also includes: a reinforcing structure (102) installed on the outer surfaces of the lower mold (301) and the upper mold (302) respectively, and a conformal support structure (501) or support structure (502) that is detachable at one end and installed on the ground, and the other end abuts against the reinforcing structure (102), wherein the conformal support structure (501) or support structure (502) can adjust its horizontal height; The conformal support structure (501) or support structure (502) can be arbitrarily combined according to the shape of the reinforcing structure (102); The reinforcing structure (102) is a reinforcing rib structure, a box structure, a sandwich structure or a frame structure made of low-density material, or a combination structure made of reinforcing rib structure and box structure, or a combination structure made of box structure and low-density material, or a combination structure made of reinforcing rib structure and low-density material. When the reinforcing structure (102) is a curved surface, the conformal support structure (501) is opposed to the reinforcing structure (102); when the reinforcing structure (102) is a plane, the conformal support structure (501) or the support structure (502) is opposed to the reinforcing structure (102).

2. The wind turbine blade mold structure according to claim 1, characterized in that: The conformal support structure (501) includes: a base (5011) and a base frame (5012) for placing the PLC circuit, and a telescopic cylinder (5013) connected to the PLC circuit. The base frame (5012) is installed above the base (5011), and the base frame (5012) is provided with a plurality of telescopic cylinders (5013) connected to the PLC circuit.

3. The wind turbine blade mold structure according to claim 2, characterized in that: The telescopic cylinder (5013) is powered by a servo motor, a hydraulic system, or a pneumatic system.

4. The wind turbine blade mold structure according to claim 2, characterized in that: The number of the base frame (5012) is multiple, and the number is matched according to the size of the lower mold (301) or the upper mold (302).

5. The wind turbine blade mold structure according to claim 4, characterized in that: The length between two adjacent base frames (5012) is L, and the deformation of the mold shell inside the lower mold (301) or upper mold (302) is m < L / 300.

6. The wind turbine blade mold structure according to claim 1, characterized in that: The support structure (502) is composed of multiple steel frames, steel pipes or support rods of varying lengths fixed on the ground.

7. A wind turbine blade mold structure according to claim 6, characterized in that: The steel frame, steel pipe or support rods of varying lengths arranged and combined are used to increase or decrease the height of the support structure (502) by means of angle iron, buckle or threaded connection.

8. The wind turbine blade mold structure according to claim 1, characterized in that: The low-density material is made by combining artificial foam, low-density inorganic materials, low-density wood, and honeycomb materials.

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