Blade protection device for wind driven generator

Abstract

The invention discloses a blade protection device for a wind driven generator, and particularly relates to the technical field of wind driven generators, the blade protection device comprises a blade, a protection sleeve is mounted on the outer side of the blade, two limiting boxes are fixedly connected to the outer side of the protection sleeve, fixing assemblies are mounted in the limiting boxes, and a protection mechanism is mounted on the outer side of the protection sleeve; the outer side of the protective sleeve is fixedly connected with two nylon belts, one end of each nylon belt is fixedly connected with a rack belt, the inner side of the protective sleeve is fixedly connected with a plurality of first rubber strips and second rubber strips, and the first rubber strips are installed on one sides of the second rubber strips; the fixing assembly comprises a pull rod. By arranging the fixing assembly and the protection mechanism, the protection sleeve can be prevented from loosening or falling off under the wind action or other external force interference, so that it is ensured that the blade tip can be continuously and stably protected, meanwhile, collision and friction between the blade tip and the surrounding environment in the transportation process can be effectively reduced, and the service life of the blade tip is prolonged. Therefore, the risk that the blade tip is damaged is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of wind turbines, and more particularly to a blade protection device for wind turbines. Background Art

[0002] Wind energy is an inexhaustible clean energy source existing in nature. my country has a vast territory, and there is a large amount of wind energy in the Northeast, Northwest, and eastern coastal areas. The use of wind turbines is also increasing. Wind turbines are electrical equipment that converts wind energy into mechanical work, which drives the rotor to rotate and ultimately outputs alternating current. Wind turbine blades are the most basic and key components of wind turbines, and play a vital role in the power generation efficiency and operational safety of wind turbines. In wind power generation projects, wind turbine blades need to be transported to the site of use.

[0003] The original wind turbine blades are affected by ice when they are covered with ice, which affects the dynamic balance between the blades and the air, resulting in a decrease in the blades' ability to receive wind, directly causing a continuous decrease in power generation. Severe ice coverage will cause the wind turbine to shut down, causing a large amount of energy damage. If the ice layer continues to thicken, the blades may be unevenly stressed, reducing the service life of the generator.

[0004] After searching, a Chinese patent with announcement number CN208502945U discloses a blade tip protection device for a wind turbine. Through an ice sensor, the ice signal on the blade can be converted into an electrical signal that can be directly detected and transmitted to the control system. The control system controls the heating work of the heating wire and the heating plate to melt the ice on the blade and the blade tip. At the same time, the de-icing device is controlled to scrape the ice on the blade to speed up the melting efficiency of the ice.

[0005] When the above-mentioned wind turbine blade tip protection device is actually used, the blade tip of the wind turbine blade is relatively weak and is easily damaged during transportation, such as cracking, breaking or deformation, which affects the performance and service life of the blade. At the same time, additional repair time is required, which reduces transportation efficiency. Summary of the invention

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides a blade protection device for a wind turbine generator to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A blade protection device for a wind turbine generator comprises a blade, a protective sleeve is installed on the outer side of the blade, two limit boxes are fixedly connected to the outer side of the protective sleeve, a fixing assembly is installed inside the limit box, a protection mechanism is installed on the outer side of the protective sleeve, two nylon belts are fixedly connected to the outer side of the protective sleeve, a rack belt is fixedly connected to one end of the nylon belt, a plurality of first rubber strips and second rubber strips are fixedly connected to the inner side of the protective sleeve, and the first rubber strip is installed on one side of the second rubber strip;

[0009] The fixing assembly includes a pull rod, which is slidably connected to the inside of the limit box, and one end of the pull rod is fixedly connected to the first moving plate, and one side of the first moving plate is fixedly connected to two sliding rods, and the outer side of the first moving plate is slidably connected to two second guide plates, and the second guide plate is fixedly connected to the inside of the limit box. The first guide plate is fixedly connected to the inside of the limit box, and a spring is welded on one side of the second moving plate, and the top of the spring is fixedly connected to the inside of the limit box, and one side of the second moving plate is fixedly connected to a connecting plate, and the upper surface of the connecting plate is fixedly connected to a card plate, and the convex teeth on one side of the card plate are adapted to the grooves on the surface of the rack belt.

[0010] By adopting the above technical solution: the stretched nylon belt can be fixed by using two clamping plates, so that the two sides of the protective cover can fit more closely to the outside of the blade, thereby ensuring that the blade tip can be continuously and stably protected.

[0011] As a further description of the above technical solution: the protective mechanism includes an adjusting box, one side of the adjusting box is fixedly connected to a stepper motor by screws, the output end of the stepper motor is fixedly connected to a gear, two racks are meshed on the outer side of the gear, the rack is slidably connected to the inside of the adjusting box, one end of the rack is fixedly connected to an adjusting plate, one side of the adjusting plate is connected to a connecting rod, the connecting rod is slidably connected to the protective cover, one end of the connecting rod is fixedly connected to an extrusion plate, and one side of the extrusion plate is fixedly connected to a plurality of third rubber strips.

[0012] By adopting the above technical solution: using multiple first rubber strips, second rubber strips and third rubber strips, the outer side of the blade can be protected inside the protective sleeve, effectively reducing the collision and friction between the blade tip and the surrounding environment during transportation.

[0013] Technical effects and advantages of the present invention:

[0014] 1. By setting a fixing component, compared with the prior art, two nylon belts can be tightened and adjusted to fix the position by using two clamping plates, which can further strengthen the fixing effect of the protective cover, and help prevent the protective cover from loosening or falling off under the action of wind or other external forces, thereby ensuring that the blade tip can be continuously and stably protected;

[0015] 2. By setting up a protective mechanism, compared with the prior art, the blade tip can be protected by multiple first rubber strips, second rubber strips and third rubber strips inside the protective cover, which can effectively reduce the collision and friction between the blade tip and the surrounding environment during transportation, thereby reducing the risk of damage to the blade tip. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0017] Figure 2 It is a schematic diagram of the internal cross-sectional structure of the protective cover of the present invention.

[0018] Figure 3 It is a schematic diagram of the local structure of the connection between the regulating box and the stepping motor of the present invention.

[0019] Figure 4 It is a schematic diagram of the local structure of the connection between the clamping plate and the rack belt of the present invention.

[0020] Figure 5 It is a schematic diagram of the local structure of the connection between the slide rod and the slide groove of the present invention.

[0021] Figure 6 It is a schematic diagram of the structure of the first movable plate and the second guide plate of the present invention.

[0022] The accompanying drawings are marked as follows: 1. blade; 2. protective cover; 3. limit box; 4. adjustment box; 5. nylon belt; 6. rack belt; 7. first rubber strip; 8. second rubber strip; 9. pull rod; 10. first movable plate; 11. slide rod; 12. first guide plate; 13. second movable plate; 14. slide groove; 15. second guide plate; 16. spring; 17. connecting plate; 18. clamping plate; 19. stepping motor; 20. gear; 21. rack; 22. adjustment plate; 23. extrusion plate; 24. third rubber strip; 25. connecting rod. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] The embodiments of this application disclose Figure 1-6 A blade protection device for a wind turbine shown in the figure comprises a blade 1, a protective cover 2 is installed on the outer side of the blade 1, two limit boxes 3 are fixedly connected to the outer side of the protective cover 2, a fixing assembly is installed inside the limit box 3, a protective mechanism is installed on the outer side of the protective cover 2, two nylon belts 5 are fixedly connected to the outer side of the protective cover 2, a rack belt 6 is fixedly connected to one end of the nylon belt 5, a plurality of first rubber strips 7 and second rubber strips 8 are fixedly connected to the inner side of the protective cover 2, and the first rubber strip 7 is installed on one side of the second rubber strip 8;

[0025] The fixing assembly includes a pull rod 9, which is slidably connected to the inside of the limit box 3. One end of the pull rod 9 is fixedly connected to a first movable plate 10, and one side of the first movable plate 10 is fixedly connected to two sliding rods 11. The outer side of the first movable plate 10 is slidably connected to two second guide plates 15, and the second guide plate 15 is fixedly connected to the inside of the limit box 3. A second movable plate 13 is arranged on the outer side of the first movable plate 10, and two sliding grooves 14 are provided on one side of the second movable plate 13. The inner side of the first guide plate 12 is slidably connected to the sliding rod 11, and the outer side of the second movable plate 13 is slidably connected to two first guide plates 12. The first guide plate 12 is fixedly connected to the inside of the limit box 3, and a spring 16 is welded on one side of the second movable plate 13. The top of the spring 16 is fixedly connected to the inside of the limit box 3, and a connecting plate 17 is fixedly connected to one side of the second movable plate 13. A card plate 18 is fixedly connected to the upper surface of the connecting plate 17, and a convex tooth on one side of the card plate 18 is adapted to the groove on the surface of the rack belt 6. By pulling the pull rod 9, the pull rod 9 can drive the first movable plate 10 to move. The two second guide plates 15 can provide a guiding effect for the first movable plate 10, so that the first movable plate 10 can drive the two sliding bars 11 to slide and connect inside the sliding groove 14, and the inclined surface on one side of the first movable plate 10 is fitted with the inclined surface on one side of the two second movable plates 13, so that the first movable plate 10 can push the second movable plate 13 to move through the inclined surface, and the first guide plate 12 provides a guiding effect for the second movable plate 13, so that the second movable plate 13 can move and squeeze inside the adjustment box 4. At the same time, the second movable plate 13 can drive the card plate 18 to move upward through the connecting plate 17, and then tighten the nylon belt 5, and insert the rack belt 6 at one end of the nylon belt 5 into the limit box 3, loosen the pull rod 9, and use the reset elastic force of the two springs 16 to make the two card plates 18 can be inserted into the groove on the outside of the rack belt 6, so that the tightening position of the nylon belt 5 can be fixed, so as to further strengthen the fixing effect on the protective cover 2, thereby ensuring that the blade tip of the blade 1 can be continuously and stably protected.

[0026] Reference Figure 2As shown, the protective mechanism includes an adjusting box 4, one side of which is fixedly connected to a stepper motor 19 by screws, and an output end of the stepper motor 19 is fixedly connected to a gear 20, and two racks 21 are meshed on the outer side of the gear 20, and the racks 21 are slidably connected to the inside of the adjusting box 4, and one end of the rack 21 is fixedly connected to an adjusting plate 22, one side of the adjusting plate 22 is connected to a connecting rod 25, and the connecting rod 25 is slidably connected to the protective sleeve 2, and one end of the connecting rod 25 is fixedly connected to an extrusion plate 23, and one side of the extrusion plate 23 is fixedly connected to a plurality of third rubber strips 24, and the two racks 21 are driven to rotate by the meshing of the gear 20, so that the two racks 21 can pull the two extrusion plates 23 to move relative to each other through the adjusting plate 22, so that the two extrusion plates 23 can drive the plurality of third rubber strips 24 to fit the tip position of the blade 1, and cooperate with the plurality of first rubber strips 7 and second rubber strips 8, thereby effectively reducing the collision and friction between the tip of the blade 1 and the surrounding environment during transportation, thereby improving transportation safety.

[0027] Working principle of the invention: The invention designs a blade protection device for a wind turbine generator, the specific structure of which is as shown in the attached manual. Figure 1-6As shown, in the present technical solution, through the mutual cooperation between various structures, when it is necessary to protect the blade 1, the protective cover 2 is first put on the tip of the blade 1, and then the stepper motor 19 is started. The stepper motor 19 is used to drive the gear 20 to rotate, so that the gear 20 is engaged to drive the two racks 21 to move relative to each other. The two racks 21 can pull the adjusting plate 22 to drive the connecting rod 25 to move inside the protective cover 2. The connecting rod 25 uses the extrusion plate 23 to drive multiple third rubber strips 24 to move to both sides of the blade 1. The gear 20 is engaged with the rack 21, so that the multiple third rubber strips 24 can be attached to both sides of the blade 1 and cooperate with the multiple first rubber strips 7 and the second rubber strips 8, so that the tip of the blade 1 can be protected inside the protective cover 2. Then, the two pull rods 9 are pulled in turn, and the first movable plate 10 can be driven to move through the pull rods 9. The first movable plate 10 is connected to the inner side of the second guide plate 15 by sliding. The two second guide plates 15 can provide a guiding effect for the movement of the first movable plate 10, so that the first movable plate 10 drives the sliding The rod 11 slides inside the slide groove 14, and the inclined surface on one side of the first movable plate 10 is adapted to the inclined surface on one side of the two second movable plates 13, so that the first movable plate 10 can push the two second movable plates 13 to move to the upper and lower ends through the inclined surface, and the first guide plate 12 can provide a guiding effect for the movement of the second movable plates 13, so that the two second movable plates 13 can squeeze the spring 16 inside the limit box 3, and at the same time, the second movable plate 13 can drive the card plate 18 to move through the connecting plate 17, so that the two card plates 18 can be separated. Separate, then pull the two nylon belts 5 so that the upper and lower ends of the protective cover 2 can fit the surface of the blade 1, then insert the rack belt 6 at one end of the nylon belt 5 into the limit box 3, and release the pull rod 9. By utilizing the reset elastic force of the two springs 16, the second movable plate 13 can be pushed to move, so that the two second movable plates 13 can be inserted into the grooves on the outside of the rack belt 6 with the waiting card plate 18, so as to fix the nylon belt 5, so that the protective cover 2 can remain stable on the tip of the blade 1, so as to better protect the tip of the blade 1.

[0028] Among them, in the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the case of no conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

[0029] The contents not described in detail in the specification belong to the prior art known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited, and conventional equipment can be used. In this technical solution, the electrical control components not mentioned belong to the prior art, so they are not shown in the figure and will not be described here;

[0030] Finally: The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A blade protection device for a wind turbine, comprising a blade (1), characterized in that: A protective sleeve (2) is installed on the outer side of the blade (1), two limit boxes (3) are fixedly connected to the outer side of the protective sleeve (2), a fixing assembly is installed inside the limit box (3), a protective mechanism is installed on the outer side of the protective sleeve (2), two nylon belts (5) are fixedly connected to the outer side of the protective sleeve (2), one end of the nylon belt (5) is fixedly connected to a rack belt (6), and a plurality of first rubber strips (7) and second rubber strips (8) are fixedly connected to the inner side of the protective sleeve (2), and the first rubber strip (7) is installed on one side of the second rubber strip (8); The fixing assembly comprises a pull rod (9), the pull rod (9) being slidably connected to the inside of the limit box (3), one end of the pull rod (9) being fixedly connected to a first movable plate (10), one side of the first movable plate (10) being fixedly connected to two sliding rods (11), the outer side of the first movable plate (10) being slidably connected to two second guide plates (15), and the second guide plates (15) being fixedly connected to the inside of the limit box (3).

2. The blade protection device for a wind turbine generator according to claim 1, characterized in that: A second movable plate (13) is arranged on the outer side of the first movable plate (10), two sliding grooves (14) are provided on one side of the second movable plate (13), the inner side of the first guide plate (12) is slidably connected to the slide rod (11), the outer side of the second movable plate (13) is slidably connected to two first guide plates (12), and the first guide plate (12) is fixedly connected to the inside of the limit box (3).

3. The blade protection device for a wind turbine generator according to claim 2, characterized in that: A spring (16) is welded to one side of the second movable plate (13), the top end of the spring (16) is fixedly connected to the inside of the limit box (3), and a connecting plate (17) is fixedly connected to one side of the second movable plate (13).

4. The blade protection device for a wind turbine generator according to claim 3 is characterized in that: A clamping plate (18) is fixedly connected to the upper surface of the connecting plate (17), and a protruding tooth on one side of the clamping plate (18) is adapted to a groove on the surface of the rack belt (6).

5. The blade protection device for a wind turbine generator according to claim 1, characterized in that: The protection mechanism comprises an adjustment box (4), one side of the adjustment box (4) is fixedly connected to a stepping motor (19) via screws, and the output end of the stepping motor (19) is fixedly connected to a gear (20).

6. The blade protection device for a wind turbine generator according to claim 5, characterized in that: Two racks (21) are meshed on the outside of the gear (20), the racks (21) are slidably connected to the inside of the adjustment box (4), and one end of the rack (21) is fixedly connected to an adjustment plate (22).

7. The blade protection device for a wind turbine generator according to claim 6, characterized in that: One side of the adjustment plate (22) is connected to a connecting rod (25), the connecting rod (25) is slidably connected to the protective sleeve (2), one end of the connecting rod (25) is fixedly connected to an extrusion plate (23), and one side of the extrusion plate (23) is fixedly connected to a plurality of third rubber strips (24).

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