WIND TURBINE BLADE MOLD STRUCTURE

Abstract

A wind turbine blade mold structure includes reinforcing structures separately mounted on outer surfaces of a lower mold and an upper mold, and conformal support structures or support structures, each with one end fixed on the ground and the other end resisting the reinforcing structures; the conformal support structures or the support structures are adjustable in horizontal heights; the structure improves the flexural rigidity, thus greatly improving the anti-deformation capacity of a shell to simplify the support structures, accelerating the manufacturing and mounting process, reducing the dimensions of the structure, reducing the overall weight of a mechanism, facilitating the transportation, and reducing the energy consumption and pollution.

Claims

1. A wind turbine blade mold structure, comprising a lower mold (301); an upper mold (302); a lower mold shell support structure (201) and an upper mold shell support structure (202) located on inner surfaces of the lower mold (301) and the upper mold (302), respectively; a turnover mechanism (401) configured for driving the upper mold shell support structure (202) to turn over above the lower mold shell support structure (201); reinforcing structures (102) separately mounted on outer surfaces of the lower mold (301) and the upper mold (302); and conformal support structures (501) or support structures (502), each with one end detachably mounted on the ground and the other end resisting the reinforcing structures (102), wherein the conformal support structures (501) or the support structures (502) are adjustable in horizontal heights; the conformal support structures (501) or the support structures (502) are combined arbitrarily according to shapes of the reinforcing structures (102); each of the reinforcing structures (102) is a reinforcing rib structure, a box structure, a sandwich structure made of a low-density material, a frame structure, or a combined structure of two or more of the above structures.

2. The wind turbine blade mold structure according to claim 1, wherein when each of the reinforcing structures (102) has a curved surface, the reinforcing structure (102) is resisted by the conformal support structure (501).

3. The wind turbine blade mold structure according to claim 1, wherein when each of the reinforcing structures (102) has a planar surface, the reinforcing structure (102) is resisted by the conformal support structure (501) or the support structure (502).

4. The wind turbine blade mold structure according to claim 2, wherein each of the conformal support structures (501) comprises a base (5011) and an underframe (5012) for placing a programmable logic circuit (PLC), and a telescopic cylinder (5013) connected to the PLC; the underframe (5012) is mounted above the base (5011); a plurality of telescopic cylinders (5013) connected to the PLC are arranged on the underframe (5012).

5. The wind turbine blade mold structure according to claim 4, wherein the telescopic cylinders (5013) is powered by a servo motor, a hydraulic system or a pneumatic system.

6. The wind turbine blade mold structure according to claim 4, wherein the number of underframes (5012) is more than one, and is determined by size of the lower mold (301) or the upper mold (302).

7. The wind turbine blade mold structure according to claim 6, wherein a length between two adjacent underframes (5012) is L, and a deformation m of a mold shell in the lower mold (301) or the upper mold (302) is less than L/300.

8. The wind turbine blade mold structure according to claim 3, wherein the support structure (502) is formed by arranging and combining a plurality of steel frames, steel pipes or support rods with different lengths fixed on the ground.

9. The wind turbine blade mold structure according to claim 7, wherein the arranged and combined steel frames, steel pipes or support rods with different lengths increase or decrease the heights of the support structures (502) by means of corner joint, snap fit, or threaded connection.

10. The wind turbine blade mold structure according to claim 1, wherein the low-density material is prepared by combining artificial foam, a low-density inorganic material, a low-density wood and a honeycomb material.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0033] FIG. 1 is a schematic diagram of a blade mold structure in the prior art;

[0034] FIG. 2 is a schematic diagram of a turnover action of a mold in the prior art;

[0035] FIG. 3 is a schematic structural diagram of a steel frame support structure in the prior art;

[0036] FIG. 4 is a schematic structural diagram of the conformal support structure;

[0037] FIG. 5 is a schematic structural diagram of another support structure;

[0038] FIG. 6 is a schematic diagram for mounting the support structure;

[0039] FIG. 7 is a schematic diagram of the turnover action of the mold in the present utility model;

[0040] FIG. 8 is a schematic diagram for mounting of the another support structure;

[0041] FIG. 9 is a schematic diagram for mounting of the another support structure;

[0042] FIG. 10 is a reinforcing structure of the reinforcing rib structure;

[0043] FIG. 11 is a reinforcing structure of the sandwich structure;

[0044] FIG. 12 is a reinforcing structure of the box structure;

[0045] FIG. 13 is a reinforcing structure of the frame structure;

[0046] FIG. 14 is a hydraulic circuit diagram of the telescopic cylinder.

DETAILED DESCRIPTION

[0047] The present utility model will be further described below with reference to the drawings and examples.

[0048] A wind turbine blade mold structure is provided, comprising a lower mold 301, an upper mold 302, a lower mold shell support structure 201, an upper mold shell support structure 202, a turnover mechanism 401, reinforcing structures (102) separately mounted on outer surfaces of the lower mold 301 and the upper mold 302, and conformal support structures 501 or support structures 502 each with one end fixed on the ground and the other end resisting the reinforcing structures 102, wherein the conformal support structures 501 or the support structures 502 are adjustable in horizontal heights.

[0049] The reinforcing structures 102 is of an interior reinforcing rib structure, frame structure, box structure or sandwich structure consisting of an artificial foam, a low-density inorganic material, a low-density wood and a honeycomb material.

[0050] Each of the conformal support structures 501 comprises a base 5011 and an underframe 5012 for placing a PLC, and a telescopic cylinder 5013 connected to the PLC; the underframe 5012 is mounted above the base 5011; a plurality of telescopic cylinders 5013 connected to the PLC are arranged on the underframe 5012, as shown in FIG. 4 and FIG. 6. When the conformal support structure can be directly fixed on the ground, the telescopic cylinders 5013 connected to the PLC can also be directly used, as shown in FIG. 9.

[0051] The upper mold shell support structure 202 is driven by the turnover mechanism 401 to separate from the conformal support structures 501 or the support structures 502 and turn over, and then resists the lower mold 301 to achieve a closing effect, as shown in FIG. 7.

[0052] The support structure 502 is formed by arranging and combining a plurality of steel frames or steel pipes fixed on the ground, as shown in FIG. 8. When switching to a reinforcing structure 102 with a different shape, the conformal support structures 501 and the support structures 502 can be recycled for multiple times, thus reducing the cost.

Example 1

[0053] When the reinforcing structure 102 on the lower mold 301 has a planar surface, and the reinforcing structure 102 on the upper mold 302 has a curved surface, the reinforcing structure 102 on the lower mold 301 is resisted by the support structure 502, and the reinforcing structure 102 on the upper mold 302 is resisted by the conformal support structure 501. The reinforcing structure 102 of a lower mold shell adopts a reinforcing rib structure or sandwich structure, as shown in FIG. 10 and FIG. 11. The reinforcing structure 102 of an upper mold shell adopts a box structure or a frame structure, as shown in FIG. 12 and FIG. 13. At a turnover beam, the turnover mechanism 401 is connected and fixed to the reinforcing structures 102 through the lower mold shell support structure 201 or the upper mold shell support structure 202. A plurality of conformal support structures 501 are arranged between two adjacent turnover mechanisms 401. Effective supporting is achieved by decreasing or increasing the number of the underframes 5012, and extending and retracting heights of the telescopic cylinders are adjusted to fit the shape of the shell, as shown in FIG. 4 and FIG. 6.

[0054] Since the reinforcing structure 102 on the upper mold 302 has a curved surface, the parts to be supported are not on the same horizontal level, and thus the parts at different positions need to be supported at different heights. As such, the PLC calculates an extending height of each of the telescopic cylinders 5013 according to the shape of the curved surface of the reinforcing structure 102. The conformal support structures 501 support the upper mold 302. The upper mold 302 is turned to a limit position through the turnover mechanism 401.

[0055] A distance sensor is arranged on a side surface of an end of the telescopic cylinder 5013. After the PLC sends a signal to the hydraulic system to enable a piston rod on the telescopic cylinder 5013 to extend to a limit position, when the distance sensor senses that the reinforcing structure 102 is not in contact with the piston rod, the distance sensor sends the signal to the PLC, and the PLC recalculates an extending height of the telescopic cylinder 5013 according to a received distance of the distance sensor and compensates an extending or retracting distance to ensure the support stability. A hydraulic circuit of each of the conformal support structures 501 is shown in FIG. 14.

[0056] Since the reinforcing structure 102 on the lower mold 301 has a planar surface, the support structure 502 is formed by arranging and combining a plurality of steel frames fixed on the ground. When the planar reinforcing structure 102 needs to be supported, a height of the steel frames used for supporting the upper mold 302 or the lower mold 301 is manually calculated according to the height of the lower mold 301 or an opening size of the upper mold 302, and the height of the steel frame or steel pipe is increased or decreased by means of adjustment of threaded connection, corner joint, snap fit and the like, as shown in FIG. 8.

[0057] When switching to a different blade, that is, when the reinforcing structure 102 with a different shape is to be used, the original reinforcing structures 102 can be removed, and a reinforcing structure 102 fitting the shape of the outer surface of the lower mold 301 or the upper mold 302 is mounted; and the conformal support structures 501 and the support structures 502 are adjusted to fit the new reinforcing structure 102. The conformal support structures 501 and the support structures 502 are highly adaptable and can be reused for multiple times, thus reducing the cost and improving the working efficiency.

Example 2

[0058] When the reinforcing structure 102 on the lower mold 301 and the reinforcing structure 102 on the upper mold 302 have curved surfaces, the reinforcing structure 102 on the lower mold 301 and the reinforcing structure 102 on the upper mold 302 are resisted by the conformal support structures 501. The reinforcing structure 102 of a lower mold shell and the reinforcing structure 102 of an upper mold shell both adopt a combination of a reinforcing rib structure and sandwich structure, as shown in FIG. 10 and FIG. 11. At a turnover beam, the turnover mechanism 401 is connected and fixed to the reinforcing structures 102 through the lower mold shell support structure 201 or the upper mold shell support structure 202. A plurality of support structures 502 are arranged between two adjacent turnover mechanisms 401. Effective supporting is achieved by decreasing or increasing the number of the underframes 5012, and extending and retracting heights of the telescopic cylinders are adjusted to fit the shape of the shell, as shown in FIG. 4 and FIG. 6.

[0059] Since both the reinforcing structure 102 on the lower mold 301 and the reinforcing structure 102 on the upper mold 302 have curved bottom surfaces, the parts to be supported are not on the same horizontal level, and thus the parts at different positions need to be supported at different heights. As such, the PLC calculates an extending height of each of the telescopic cylinders 5013 according to the shape of the curved surface of the reinforcing structure 102. The conformal support structures 501 support the upper mold 302. The upper mold 302 is turned to a limit position through the turnover mechanism 401.

[0060] A distance sensor is arranged on a side surface of an end of the telescopic cylinder 5013. After the PLC sends a signal to the hydraulic system to enable a piston rod on the telescopic cylinder 5013 to extend to a limit position, when the distance sensor senses that the reinforcing structure 102 is not in contact with the piston rod, the distance sensor sends the signal to the PLC, and the PLC recalculates an extending height of the telescopic cylinder 5013 according to a received distance of the distance sensor and compensates an extending or retracting distance to ensure the support stability. A hydraulic circuit of each of the conformal support structures 501 is shown in FIG. 14.

[0061] When switching to a different blade, that is, when the reinforcing structure 102 with a different shape is to be used, the original reinforcing structures 102 can be removed, and a reinforcing structure 102 fitting the shape of the outer surface of the lower mold 301 or the upper mold 302 is mounted; and the conformal support structures 501 and the support structures 502 are adjusted to fit the new reinforcing structure 102. The conformal support structures 501 and the support structures 502 are highly adaptable and can be reused for multiple times, thus reducing the cost and improving the working efficiency.

Example 3

[0062] When the reinforcing structure 102 on the lower mold 301 has a curved surface, and the reinforcing structure 102 on the upper mold 302 has a planar surface, the reinforcing structure 102 on the lower mold 301 is resisted by the conformal support structure 501, and the reinforcing structure 102 on the upper mold 302 is resisted by the support structure 502. The reinforcing structure 102 of a lower mold shell adopts a reinforcing rib structure or sandwich structure, as shown in FIG. 10 and FIG. 11. The reinforcing structure 102 of an upper mold shell adopts a box structure or a frame structure, as shown in FIG. 12 and FIG. 13. At a turnover beam, the turnover mechanism 401 is connected and fixed to the reinforcing structures 102 through the lower mold shell support structure 201 or the upper mold shell support structure 202. A plurality of support structures 502 are arranged between two adjacent turnover mechanisms 401.

[0063] Since the reinforcing structure 102 on the lower mold 301 has a curved surface, the parts to be supported are not on the same horizontal level, and thus the parts at different positions need to be supported at different heights. As such, the PLC calculates an extending height of each of the telescopic cylinders 5013 according to the shape of the curved surface of the reinforcing structure 102. The conformal support structures 501 support the upper mold 302. The upper mold 302 is turned to a limit position through the turnover mechanism 401.

[0064] A distance sensor is arranged on a side surface of an end of the telescopic cylinder 5013. After the PLC sends a signal to the hydraulic system to enable a piston rod on the telescopic cylinder 5013 to extend to a limit position, when the distance sensor senses that the reinforcing structure 102 is not in contact with the piston rod, the distance sensor sends the signal to the PLC, and the PLC recalculates an extending height of the telescopic cylinder 5013 according to a received distance of the distance sensor and compensates an extending or retracting distance to ensure the support stability. A hydraulic circuit of each of the conformal support structures 501 is shown in FIG. 13.

[0065] Since the reinforcing structure 102 on the upper mold 301 has a planar surface, the support structure 502 is formed by arranging and combining a plurality of steel pipes fixed on the ground, as shown in FIG. 5. When the planar reinforcing structure 102 needs to be supported, a height of the steel pipes used for supporting the upper mold 302 or the lower mold 301 is manually calculated according to the height of the lower mold 301 or an opening size of the upper mold 302, and the height of the steel frame or steel pipe is increased or decreased by means of adjustment of threaded connection, corner joint, snap fit and the like.

[0066] When switching to a different blade, that is, when the reinforcing structure 102 with a different shape is to be used, the original reinforcing structures 102 can be removed, and a reinforcing structure 102 fitting the shape of the outer surface of the lower mold 301 or the upper mold 302 is mounted; and the conformal support structures 501 and the support structures 502 are adjusted to fit the new reinforcing structure 102. The conformal support structures 501 and the support structures 502 are highly adaptable and can be reused for multiple times, thus reducing the cost and improving the working efficiency.

Example 4

[0067] When the reinforcing structure 102 on the lower mold 301 and the reinforcing structure 102 on the upper mold 302 have planar surfaces, the lower mold 301 and the upper mold 302 are resisted by the support structures 502. The reinforcing structure 102 of a lower mold shell and the reinforcing structure 102 of an upper mold shell both adopt a box structure or a frame structure, as shown in FIG. 12 and FIG. 13. At a turnover beam, the turnover mechanism 401 is connected and fixed to the reinforcing structures 102 through the lower mold shell support structure 201 or the upper mold shell support structure 202. A plurality of support structures 502 are arranged between two adjacent turnover mechanisms 401.

[0068] Since both the reinforcing structure 102 on the lower mold 301 and the reinforcing structure 102 on the upper mold 302 have planar surfaces, the support structure 502 on the upper mold 302 is formed by arranging and combining a plurality of support rods with different lengths fixed on the ground, as shown in FIG. 8. When the planar reinforcing structure 102 on the lower mold 301 needs to be supported, a height of the steel frames used for supporting the upper mold 302 or the lower mold 301 is manually calculated according to the height of the lower mold 301 or an opening size of the upper mold 302, and the positions of the support rods are adjusted according to different heights, as shown in FIG. 8.

[0069] When switching to a different blade, that is, when the reinforcing structure 102 with a different shape is to be used, the original reinforcing structures 102 can be removed, and a reinforcing structure 102 fitting the shape of the outer surface of the lower mold 301 or the upper mold 302 is mounted; and the conformal support structures 501 and the support structures 502 are adjusted to fit the new reinforcing structure 102. The conformal support structures 501 and the support structures 502 are highly adaptable and can be reused for multiple times, thus reducing the cost and improving the working efficiency.

Example 5

[0070] When the reinforcing structure 102 on the lower mold 301 and the reinforcing structure 102 on the upper mold 302 have curved surfaces, the lower mold 301 and the upper mold 302 are both resisted by the conformal support structure 501. The reinforcing structure 102 of a lower mold shell and the reinforcing structure 102 of an upper mold shell both adopt a box structure or a frame structure, as shown in FIG. 12 and FIG. 13. At a turnover beam, the turnover mechanism 401 is connected and fixed to the reinforcing structures 102 through the lower mold shell support structure 201 or the upper mold shell support structure 202. A plurality of conformal support structures 501 are arranged between two adjacent turnover mechanisms 401. Effective supporting is achieved by decreasing or increasing the number of the underframes 5012 the extending and retracting heights of the telescopic cylinders are adjusted to fit the bottom surface of the reinforcing structure 102.

[0071] The PLC calculates an extending height of each of the telescopic cylinders 5013 according to the bottom surface condition of the reinforcing structure 102. The corresponding conformal support structures 501 support the upper mold 302 and the lower mold 301, respectively. The upper mold 302 is turned to a limit position through the turnover mechanism 401.

[0072] A distance sensor is arranged on a side surface of an end of the telescopic cylinder 5013. After the PLC sends a signal to the hydraulic system to enable a piston rod on the telescopic cylinder 5013 to extend to a limit position, when the distance sensor senses that the reinforcing structure 102 is not in contact with the piston rod, the distance sensor sends the signal to the PLC, and the PLC recalculates an extending height of the telescopic cylinder 5013 according to a received distance of the distance sensor and compensates an extending or retracting distance to ensure the support stability. A hydraulic circuit of each of the conformal support structures 501 is shown in FIG. 13.

[0073] When switching to a different blade, that is, when the reinforcing structure 102 with a different shape is to be used, the original reinforcing structures 102 can be removed, and a reinforcing structure 102 fitting the shape of the outer surface of the lower mold 301 or the upper mold 302 is mounted; and the conformal support structures 501 and the support structures 502 are adjusted to fit the new reinforcing structure 102. The conformal support structures 501 and the support structures 502 are highly adaptable and can be reused for multiple times, thus reducing the cost and improving the working efficiency.

[0074] The above embodiments are intended only to illustrate the technical concept and features of the present utility model and to enable those skilled in the art to understand the contents of the present utility model and to implement the present utility model, but not to limit the protection scope of the present utility model. All equivalent changes and modifications made according to the spirit of the present utility model shall fall within the protection scope of the present utility model.