Wind power blade surface polishing head

Abstract

The utility model discloses a wind power blade surface polishing head which comprises a polishing head connecting frame, the upper end face of the polishing head connecting frame is used for being connected with an external wind power blade moving device, the wind power blade surface polishing head further comprises a first driving device, the first driving device is connected with a T-shaped speed reducer, and the two output ends of the T-shaped speed reducer are respectively connected with a rotating block. The movable ends of the air cylinders are connected with the supporting assemblies, the fixed ends of the air cylinders are in sliding connection with the supporting assemblies, the supporting assemblies are rotationally connected with the polishing assemblies, the polishing assemblies are used for polishing the surfaces of the wind power blades, and each air cylinder is connected with one electric proportional valve. And the first driving device and the electric proportional valve are connected with the control device. The output end of the first servo motor rotates to drive the input end of the T-shaped speed reducer to rotate, and then the grinding assembly is driven to rotate, so that the grinding assembly can adapt to the up-down diameter change of the wind power blade, and the grinding assembly can be more effectively attached to concave-convex smooth curved surfaces with different curvature radiuses.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power blade grinding, in particular to a grinding head for the surface of a wind power blade. Background Technique

[0002] After the production and manufacturing of wind power blades are completed, it is necessary to spray paint on the blade surface to protect the blade surface. However, the surface of the manufactured blade is generally relatively smooth. If paint is sprayed on the smooth blade surface, the protective paint is not easy to stay on the blade surface. Therefore, it is necessary to grind the surface of the wind power blade to make its surface rough so that the protective paint can be more easily attached to the wind power blade surface.

[0003] The grinding assembly of a wind power blade grinding machine generally uses a motor to drive a grinding wheel to grind the surface of the wind power blade. However, the existing grinding wheel generally uses a spring as a buffer to adjust the grinding force of the grinding wheel. However, when the grinding assembly grinds while tilting upward, it is necessary to overcome the downward gravity of the grinding assembly itself to apply pressure to the blade surface to perform the grinding operation. When the grinding assembly grinds while tilting downward, since the downward gravity of the grinding assembly itself will increase the pressure on the blade, only a very small pressure needs to be applied to the grinding assembly. However, since the elastic force of the spring cannot be controlled, that is, the grinding force of the grinding wheel cannot be automatically adjusted when the grinding wheel rotates to different angles, the grinding wheel cannot fit well with the blade surface, resulting in that the wind power blade grinding wheel cannot adapt to the change in the upper and lower diameters of the blade and cannot effectively fit with the concave-convex smooth curved surfaces with different radii of curvature, and thus the grinding effect is poor.

[0004] Therefore, there is an urgent need in the art for a grinding device that can automatically adjust the grinding force, can effectively fit with the surface of the wind power blade, and has a good grinding effect. Summary of the Invention

[0005] The purpose of the utility model is to provide a grinding head for the surface of a wind power blade to solve the problems existing in the above-mentioned prior art, and a grinding head that can automatically adjust the grinding force, can effectively fit with the surface of the wind power blade, and has a good grinding effect can be realized.

[0006] To achieve the above purpose, the utility model provides the following scheme:

[0007] The utility model provides a grinding head for the surface of a wind power blade, which comprises a grinding head connecting frame. The upper end surface of the grinding head connecting frame is used to be connected with an external moving device of the wind power blade. The grinding head also comprises a first driving device, which is connected with a T-shaped speed reducer. Two output ends of the T-shaped speed reducer are respectively connected with a rotating block. The rotating block is connected with a cylinder through a cylinder bracket. The movable end of the cylinder is connected with a supporting component, and the fixed end of the cylinder is slidably connected with the supporting component. The supporting component is rotationally connected with a grinding component, and the grinding component is used for grinding the surface of the wind power blade. Each cylinder is connected with an electro-hydraulic proportional valve, and the first driving device and the electro-hydraulic proportional valve are both connected with a control device.

[0008] Preferably, the first driving device is a first servo motor, which is arranged inside the grinding head connecting frame. The output end of the first servo motor is connected with the input end of the T-shaped speed reducer. Axially arranged flat keys are symmetrically arranged on two output shafts of the T-shaped speed reducer, and key grooves matching with the flat keys are arranged on the rotating block, so that the rotation of the two output shafts of the T-shaped speed reducer can drive the rotating block to rotate.

[0009] Preferably, the rotating block is connected with the cylinder bracket. The fixed end of the cylinder is fixedly connected to the upper end surface of the cylinder bracket, and a sliding block is arranged on the outer side surface of the cylinder bracket.

[0010] Preferably, the supporting component comprises a first supporting member, and a slide rail arranged axially is arranged inside the first supporting member. The sliding block is matched with the slide rail so that the sliding block can slide on the slide rail.

[0011] Preferably, the supporting component further comprises a second supporting member. One end of the first supporting member is fixedly connected to the end of the second supporting member, so that the two first supporting members and the second supporting member form a semi-surrounding structure. The T-shaped speed reducer and the two cylinders are both located inside the semi-surrounding structure, and the movable end of the cylinder is connected with the second supporting member.

[0012] Preferably, the grinding component comprises a grinding bracket and a second servo motor. The second servo motor is arranged on the upper part of the grinding bracket. The output end of the second servo motor is connected with a driving pulley. A belt is sleeved on the driving pulley. A driven pulley is connected with a grinding wheel rotating shaft, and a grinding wheel is connected to the grinding wheel rotating shaft. The grinding wheel is arranged inside the grinding bracket, and the second servo motor is connected with the control device.

[0013] Preferably, a first swing support frame is provided at one end of the grinding support frame away from the grinding wheel. The first swing support frame can abut against the inside of the second support member. Corresponding first swing support frame through holes are respectively provided on the upper end surface and the lower end surface of the first swing support frame. Corresponding second support member through holes are respectively provided on the upper end surface and the lower end surface of the second support member. A swing shaft can pass through the second support member through hole and the first swing support frame through hole, so that the first swing support frame can swing relative to the second support member via the swing shaft.

[0014] Preferably, a dust collection hood is provided at the lower end of the grinding support frame, and a dust suction port is provided on the outer wall of the dust collection hood.

[0015] Preferably, a contact wheel is respectively provided at both ends of the grinding support frame, and the diameter of the contact wheel is smaller than the diameter of the grinding wheel.

[0016] Preferably, hanging rings are symmetrically provided at one end of the grinding support frame away from the grinding wheel. Support ribs are provided on the outer side of the first support frame, and support rib through holes are provided on the support ribs and are evenly arranged along the length direction. A spring can be hung on the hanging rings and the support rib through holes.

[0017] The utility model has achieved the following beneficial technical effects compared with the prior art:

[0018] 1. For the surface grinding head of the wind turbine blade provided by the utility model, the rotation of the output end of the first servo motor drives the rotation of the input end of the T-shaped reducer, and then drives the rotation of the two output ends of the T-shaped reducer, and then drives the rotation of the rotating block, and then drives the rotation of the cylinder support and the support assembly, and finally drives the rotation of the grinding assembly, which can make the grinding assembly adapt to the change of the upper and lower diameters of the wind turbine blade, and make it more effectively fit the concave-convex smooth surfaces with different curvature radii.

[0019] 2. For the surface grinding head of the wind turbine blade provided by the utility model, by setting an electro-hydraulic proportional valve, the electro-hydraulic proportional valve accurately controls the stroke of the cylinder, so that the movable end of the cylinder can push the grinding assembly to move horizontally, enabling the grinding assembly to fit the surface of the wind turbine blade for grinding, and realizing the control of automatically adjusting the grinding force of the grinding assembly by controlling the electro-hydraulic proportional valve. The slider is fixedly connected to the fixed end of the cylinder. When the movable end of the cylinder moves horizontally through the control device, it drives the slide rail to move horizontally, and then drives the first support member and the second support member to move horizontally, and then drives the grinding assembly to move horizontally, realizing the horizontal fitting of the grinding assembly and the surface of the wind turbine blade.

[0020] 3. The surface grinding head for wind turbine blades provided by the present utility model can drive the grinding bracket to swing by setting a swing shaft when the grinding assembly grinds the wind turbine blades. Further, it can drive the grinding wheel to swing left and right, so that when the curvature radius of the blade changes, the grinding wheel can swing left and right, making the grinding wheel more conform to the blade surface and achieving a better grinding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0022] Figure 1 It is a three-dimensional structural schematic diagram of the surface grinding head for wind turbine blades in the present utility model;

[0023] Figure 2 It is a top view cross-sectional view of the surface grinding head for wind turbine blades in the present utility model;

[0024] Figure 3 It is a front view of the surface grinding head for wind turbine blades in the present utility model;

[0025] Figure 4 It is a three-dimensional structural schematic diagram of the grinding bracket of the surface grinding head for wind turbine blades in the present utility model;

[0026] Figure 5 It is a three-dimensional structural schematic diagram of the grinding bracket of the surface grinding head for wind turbine blades in another perspective in the present utility model;

[0027] Figure 6 It is a connection schematic diagram of the rotating block of the surface grinding head for wind turbine blades in the present utility model.

[0028] In the figure: 1 - grinding head connecting frame, 2 - first servo motor, 3 - T-shaped reducer, 4 - rotating block, 5 - cylinder bracket, 6 - cylinder, 7 - flat key, 8 - flat key groove, 9 - slider, 10 - first support, 11 - slide rail, 12 - second support, 13 - grinding bracket, 14 - second servo motor, 15 - driving pulley, 16 - belt, 17 - driven pulley, 18 - grinding wheel shaft, 19 - grinding wheel, 20 - first swing support frame, 21 - through hole of the first swing support frame, 22 - through hole of the second support, 23 - swing shaft, 24 - dust collection cover, 25 - dust suction port, 26 - contact wheel, 27 - hanging ring, 28 - support rib, 29 - through hole of the support rib, 30 - spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0030] To make the above objects, features, and advantages of the present utility model more obvious and understandable, the present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0031] The present utility model provides a grinding head for the surface of a wind turbine blade, as Figures 1-6 shown, which includes a grinding head connecting frame 1. The upper end surface of the grinding head connecting frame 1 is used to be connected to an external wind turbine blade moving device. The external wind turbine blade moving device will move the grinding head to the position of the wind turbine blade that needs to be ground through the grinding head connecting frame 1. The grinding head for the surface of a wind turbine blade includes a first driving device. The first driving device is connected to a T-shaped reducer 3. The two output ends of the T-shaped reducer 3 are respectively connected to a rotating block 4. The rotating block 4 is connected to a cylinder 6 through a cylinder bracket 5. The movable end of the cylinder 6 is connected to a support assembly, and the fixed end of the cylinder 6 is slidably connected to the support assembly. The support assembly is rotatably connected to a grinding assembly. The grinding assembly is used to grind the surface of the wind turbine blade. Each cylinder 6 is connected to an electro-hydraulic proportional valve, and the electro-hydraulic proportional valve is connected to a control device. The first driving device is a first servo motor 2. The first servo motor 2 is arranged inside the grinding head connecting frame 1 with a compact structure. The output end of the first servo motor 2 is connected to the input end of the T-shaped reducer 3. Flat keys 7 arranged axially are symmetrically provided on the two output shafts of the T-shaped reducer 3. Key grooves 8 matching the flat keys 7 are provided on the rotating block 4, so that the rotation of the two output shafts of the T-shaped reducer 3 can drive the rotation of the rotating block 4. The rotating block 4 and the output shaft of the T-shaped reducer 3 are connected by key connection, realizing the connection stability between the rotating block 4 and the T-shaped reducer 3.

[0032] Specifically, through the control device, the first servo motor 2 is started. The rotation of the output end of the first servo motor 2 drives the rotation of the input end of the T-shaped reducer 3, and then drives the rotation of the two output ends of the T-shaped reducer 3, and then drives the rotation of the rotating block 4, and then drives the rotation of the cylinder bracket 5 and the support assembly, and finally drives the rotation of the grinding assembly, enabling the grinding assembly to adapt to the change in the upper and lower diameters of the wind turbine blade, and making it more effectively fit the concave and convex smooth surfaces with different curvature radii. Through the control device, the electro-hydraulic proportional valve is started, enabling the electro-hydraulic proportional valve to precisely control the stroke of the cylinder 6, so that the movable end of the cylinder 6 can push the grinding assembly to move horizontally, and the control of the electro-hydraulic proportional valve can be achieved to realize the control of automatically adjusting the grinding force of the grinding assembly. Compared with the spring used in the prior art, due to the uncontrollability of the spring elasticity, when the grinding assembly grinds the surface of the wind turbine blade at different angles, the pressure on the wind turbine blade cannot be accurately controlled. There may be a situation where the pressure is too large and the grinding force is large when tilting downward, while the pressure is too small and the grinding force is small when tilting upward. The electro-hydraulic proportional valve is sensitive to load changes, has a fast response speed, and can be remotely controlled. When grinding the surface of the wind turbine blade, it can be adjusted at any time to control the grinding force of the grinding assembly on the surface of the wind turbine blade, making the grinding assembly more accurately fit the blade surface and achieving a better grinding effect.

[0033] During specific operation, the grinding assembly is placed on the wind turbine blade. The cylinder 6 is started through the control device to work, and the cylinder 6 will push the grinding assembly to move, and then get close to the wind turbine blade to achieve grinding. When the diameter of the wind turbine blade changes, the first servo motor 2 is started through the control device. The rotation of the output shaft of the first servo motor 2 drives the rotation of the grinding assembly, thereby adjusting the fitting degree between the grinding assembly and the wind turbine blade, that is, it realizes that the grinding assembly can adapt to the change in the upper and lower diameters of the wind turbine blade, can also adapt to the effective fitting of smooth surfaces with different curvature radii, and can automatically adjust the grinding force, with a good grinding effect.

[0034] In this embodiment, the rotating block 4 is connected to the cylinder bracket 5. The fixed end of the cylinder 6 is fixedly connected to the upper end surface of the cylinder bracket 5. A slider 9 is arranged on the outer side surface of the cylinder bracket 5. The support assembly includes a first support member 10. A slide rail 11 arranged along the axial direction is provided inside the first support member 10. The slider 9 is matched with the slide rail 11 so that the slider 9 can slide on the slide rail 11. The support assembly further includes a second support member 12. One end of the first support member 10 is fixedly connected to the end of the second support member 12, so that the two first support members 10 and the second support member 12 form a semi-surrounding structure. The T-shaped reducer 3 and the two cylinders 6 are both located inside the semi-surrounding structure. The movable end of the cylinder 6 is connected to the second support member 12. Specifically, the slider 9 is fixedly connected to the fixed end of the cylinder 6. When the control device makes the movable end of the cylinder 6 move horizontally, it will drive the slide rail 11 to move horizontally, and then drive the first support member 10 and the second support member 12 to move horizontally, and then drive the grinding assembly to move horizontally, realizing the horizontal fitting of the grinding assembly with the surface of the wind turbine blade.

[0035] In this embodiment, the grinding assembly includes a grinding bracket 13 and a second servo motor 14. The second servo motor 14 is arranged on the upper part of the grinding bracket 13. The output end of the second servo motor 14 is connected to the driving pulley 15. A belt 16 is sleeved on the driving pulley 15. The driven pulley 17 is connected to the grinding wheel rotating shaft 18. A grinding wheel 19 is connected to the grinding wheel rotating shaft 18. The grinding wheel 19 is arranged inside the grinding bracket 13. The second servo motor 14 is connected to the control device. Specifically, by starting the second servo motor 14 through the control device, the rotation of the second servo motor 14 will drive the driving pulley 15 to rotate, and then drive the belt 16 to rotate, and then drive the rotation of the driven pulley 17, and then drive the rotation of the grinding wheel rotating shaft 18, and then drive the rotation of the grinding wheel 19. A brush is provided on the grinding wheel 19 to realize the grinding of the surface of the wind turbine blade.

[0036] In this embodiment, a first swing support frame 20 is arranged at one end of the grinding bracket 13 away from the grinding wheel 19. The first swing support frame 20 can abut against the inside of the second support member 12. Corresponding first swing support frame through holes 21 are respectively arranged on the upper end surface and the lower end surface of the first swing support frame 20. Corresponding second support member through holes 22 are respectively arranged on the upper end surface and the lower end surface of the second support member 12. A swing shaft 23 can pass through the second support member through hole 22 and the first swing support frame through hole 21, so that the first swing support frame 20 can swing relative to the second support member 12 via the swing shaft 23. Specifically, when the grinding assembly grinds the wind turbine blade, the swing of the first swing support frame 20 can drive the grinding bracket 13 to swing, and then drive the grinding wheel 19 to swing left and right, so that when the curvature radius of the blade changes, the grinding wheel 19 can swing left and right, making the grinding wheel 19 more conform to the blade surface and the grinding effect better.

[0037] In this embodiment, a dust collecting hood 24 is provided at the lower end of the grinding bracket. A dust suction port 25 is provided on the outer wall of the dust collecting hood 24, which can centrally collect the dust generated during the grinding process into the dust collecting hood 24 and then suck it away through the dust suction port 25, ensuring the cleanliness of the processing area and effectively improving the working environment.

[0038] In this embodiment, a contact wheel 26 is respectively arranged at both ends of the grinding bracket. The diameter of the contact wheel 26 is smaller than that of the grinding wheel 19. The grinding wheel 19 first contacts the wind power blade, and then the contact wheel 26 contacts the wind power blade to press it, improving the stability of the grinding process, indirectly improving the grinding quality, and achieving a better grinding effect.

[0039] In this embodiment, hanging rings 27 are symmetrically arranged at one end of the grinding bracket away from the grinding wheel 19. Support ribs 28 are arranged on the outer side of the first support frame. Support rib through holes 29 are arranged on the support ribs 28 and are evenly arranged along the length direction. The spring 30 can be hung on the hanging rings and the support rib through holes. Arranging the spring 30 between the grinding bracket 13 and the first support member can prevent the left and right swing amplitude of the grinding assembly from being too large when moving upward.

[0040] The present utility model uses specific examples to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model; at the same time, for those of ordinary skill in the art, according to the idea of the present utility model, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present utility model.

Claims

1. A surface grinding head for a wind turbine blade, comprising a grinding head connecting frame, characterized in that: The upper end surface of the grinding head connecting frame is used to be connected to the external wind power blade moving device. It further includes a first driving device, which is connected to a T-shaped reducer. The two output ends of the T-shaped reducer are respectively connected to a rotating block. The rotating block is connected to a cylinder through a cylinder bracket. The movable end of the cylinder is connected to a support assembly, and the fixed end of the cylinder is slidably connected to the support assembly. The support assembly is rotatably connected to a grinding assembly, and the grinding assembly is used for grinding the surface of the wind power blade. Each cylinder is connected to an electro-hydraulic proportional valve, and the first driving device and the electro-hydraulic proportional valve are both connected to a control device.

2. The surface grinding head for a wind power blade according to claim 1, characterized in that: The first driving device is a first servo motor, which is arranged inside the grinding head connecting frame. The output end of the first servo motor is connected to the input end of the T-shaped reducer. Axially arranged flat keys are symmetrically provided on the two output shafts of the T-shaped reducer, and flat key grooves matching the flat keys are provided on the rotating block, so that the rotation of the two output shafts of the T-shaped reducer can drive the rotation of the rotating block.

3. The surface grinding head for a wind turbine blade according to claim 1, wherein: The rotating block is connected to the cylinder bracket, and the fixed end of the cylinder is fixedly connected to the upper end surface of the cylinder bracket. A slider is arranged on the outer side surface of the cylinder bracket.

4. The surface grinding head for a wind power blade according to claim 3, characterized in that: The support assembly includes a first support member, and a slide rail arranged axially is provided inside the first support member. The slider is matched with the slide rail so that the slider can slide on the slide rail.

5. The surface grinding head for a wind turbine blade according to claim 4, characterized in that: The support assembly further includes a second support member. One end of the first support member is fixedly connected to the end of the second support member, so that the two first support members and the second support member form a semi-enclosed structure. The T-shaped reducer and the two cylinders are both located inside the semi-enclosed structure, and the movable end of the cylinder is connected to the second support member.

6. The surface grinding head for a wind turbine blade according to claim 5, characterized in that: The grinding assembly includes a grinding bracket and a second servo motor. The second servo motor is arranged on the upper part of the grinding bracket. The output end of the second servo motor is connected to a driving pulley. A belt is sleeved on the driving pulley. A driven pulley is connected to a grinding wheel rotating shaft, and a grinding wheel is connected to the grinding wheel rotating shaft. The grinding wheel is arranged inside the grinding bracket, and the second servo motor is connected to the control device.

7. The surface grinding head for a wind power blade according to claim 6, characterized in that: A first swing support frame is arranged at the end of the grinding bracket away from the grinding wheel. The first swing support frame can abut against the inside of the second support member. Corresponding first swing support frame through holes are respectively arranged on the upper end surface and the lower end surface of the first swing support frame. Corresponding second support member through holes are respectively arranged on the upper end surface and the lower end surface of the second support member. A swing shaft can pass through the two second support member through holes and the two first swing support frame through holes, so that the first swing support frame can swing relative to the second support member via the swing shaft.

8. The surface grinding head for a wind turbine blade according to claim 6, characterized in that: A dust collection cover is arranged at the lower end of the grinding bracket, and a dust suction port is arranged on the outer wall of the dust collection cover.

9. The surface grinding head for a wind turbine blade according to claim 6, characterized in that: Contact wheels are respectively arranged at both ends of the grinding bracket, and the diameter of the contact wheel is smaller than the diameter of the grinding wheel.

10. The surface grinding head for a wind power blade according to claim 6, wherein: Hanging rings are symmetrically arranged at one end of the grinding bracket away from the grinding wheel. Support ribs are arranged on the outer side of the first support member, and support rib through holes are arranged on the support ribs and are uniformly arranged along the length direction. The spring can be hung on the hanging rings and the support rib through holes.

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