CN114439709B - Wind Turbine Blade Maintenance Device - Google Patents

Abstract

The invention discloses a wind driven generator blade maintenance device, comprising: the supporting frame is horizontally arranged, and the middle part of the supporting frame is hollowed; the washing frame is horizontally erected in the middle of the supporting frame and is an axisymmetric polygonal frame, washing pipes are arranged on the inner side of the washing frame along the circumferential direction of the washing frame, and a plurality of washing nozzles are arranged on the inner side of each washing pipe along the length direction of the washing pipe at intervals; wherein, the adjacent sides of the flushing rack are hinged with each other, and the axial size of the flushing rack can be changed under the driving of the driving component. The blade maintenance device of the wind driven generator can replace the existing manual cleaning scheme, and has the advantages of low labor intensity, safety, reliability and the like.

Description

Wind Turbine Blade Maintenance Device

technical field

The present invention relates to the field of wind power generation equipment. More specifically, the present invention relates to a wind turbine blade maintenance device.

Background technique

During the operation of the wind turbine, the blades need to be cleaned regularly to avoid corrosion caused by the pollution of rain and sand. In the existing blade cleaning scheme, workers carry safety ropes and spray guns to manually clean the blades from top to bottom, which is labor-intensive and dangerous.

SUMMARY OF THE INVENTION

An object of the present invention is to provide a wind turbine blade maintenance device to replace the existing manual cleaning solution.

In order to achieve the objects and other advantages according to the present invention, a wind turbine blade maintenance device is provided, comprising:

a support frame, which is arranged horizontally, and the middle part of the support frame is hollow;

The flushing rack is horizontally erected in the middle of the support rack, the flushing rack is an axisymmetric polygonal frame, the inner side of the flushing rack is provided with flushing pipes along its circumferential direction, and the inner side of the flushing pipe is spaced along its length direction. There are multiple flushing nozzles; of which,

Adjacent sides of the flushing rack are hinged to each other, and the flushing rack can have a variable axial dimension driven by the drive assembly.

Preferably, in the wind turbine blade maintenance device, the flushing frame is a hexagonal frame, comprising two oppositely arranged long sides and four short sides hinged with both ends of the long sides; the The drive assembly includes: a worm, which is arranged horizontally, two ends of the worm are fixed with threaded rods along its axial direction, and the ends of the threaded rods are rotatably connected with the support frame; a worm wheel is engaged with the worm, The worm wheel is driven and rotated by a positive and negative motor fixed on the support frame; a connecting rod is parallel to the worm and located on the same horizontal plane, and both ends of the connecting rod are respectively fixedly connected to the support frame; Two first drive rods are arranged horizontally on both sides of the worm and are perpendicular to the threaded rod and the connecting rod, one end of each first drive rod is threadedly sleeved with the threaded rod, and the other end slidably sleeved with the connecting rod; two second driving rods, which are arranged between the two first driving rods and are oppositely arranged, each second driving rod is horizontally arranged, and one end of each second driving rod is It is vertically and fixedly connected with the middle part of the adjacent first drive rod, and the other end is fixedly connected with the hinge shafts of the two adjacent short sides; the two first telescopic rods are horizontally arranged on both sides of the worm, and are connected with the two adjacent short sides. The first drive rods are parallel, one end of each first telescopic rod is rotatably connected with the threaded rod, and the other end is fixedly connected with the adjacent long side; two second telescopic rods are connected with the two first telescopic rods. The telescopic rods are oppositely arranged, one end of each second telescopic rod is fixedly connected with the connecting rod, and the other end is fixedly connected with the adjacent long side; wherein, the threaded rod is a bidirectional threaded rod, and one end of a first driving rod It is connected with the forward thread of the threaded rod, and one end of the other first driving rod is connected with the reverse thread of the threaded rod.

Preferably, in the wind turbine blade maintenance device, one end of the second driving rod penetrates the first driving rod, and is connected to the first driving rod through L-shaped reinforcing plates arranged on both sides of the second driving rod The first drive rod is vertically fixedly connected.

Preferably, in the wind turbine blade maintenance device, a distance meter is fixed in the middle of the top surface of one of the long sides of the washing rack, and the distance meter is connected to the controller of the forward and reverse motors.

Preferably, the wind turbine blade maintenance device further comprises: a guide assembly disposed below the flushing rack, the guide assembly including two third telescopic rods disposed on the two Below and parallel to the second drive rod, the two third telescopic rods are arranged opposite to each other, one end of each third telescopic rod is fixedly connected to the support frame, and a spring is sleeved on the outside of the third telescopic rod; Two U-shaped plates, which are vertically arranged and the open ends are opposite to each other, the two U-shaped plates are in one-to-one correspondence with the two third telescopic rods, and the closed end of each U-shaped plate corresponds to the corresponding third telescopic rod The other end of the guide pulley is fixedly connected; two guide pulleys are arranged horizontally and correspond to the two U-shaped plates one-to-one, and each guide pulley is arranged in the corresponding U-shaped plate and is rotatably connected with it.

Preferably, in the wind turbine blade maintenance device, a plurality of balls are embedded in the chute of the guide pulley at intervals along its circumferential direction.

Preferably, the wind turbine blade maintenance device further includes: a scrubbing assembly, which includes two cleaning rollers, which are in one-to-one correspondence with the two guide pulleys, and each cleaning roller is arranged on a corresponding The bottom of the guide pulley is rotatably connected with the U-shaped plate, the side wall of the cleaning roller is provided with a first brush; two cleaning belts are arranged on the front and rear sides of the two U-shaped plates, One end of each cleaning belt is rotatably connected with the outer side wall of one of the U-shaped plates, and the other end is rotatably connected with the corresponding outer side wall of the other U-shaped plate. The two cleaning belts are elastic belts, and the elastic belts are provided with Second brush.

Preferably, the wind turbine blade maintenance device further includes: a lifting assembly, which includes a hoist, which is arranged on the opposite side of the support frame to the front and rear motors; a lifting lug, which is arranged on the side of the support frame. On the side of the support frame where the positive and negative motors are arranged, the lifting lugs are arranged opposite to the hoist; the crank arm lift is set on the ground, and a fixed pulley is fixed on the lifting platform of the crank arm lift; the wire rope, One end is connected with the lifting lug, and the other end is connected with the hoist through the fixed pulley.

The present invention includes at least the following beneficial effects:

In the wind turbine maintenance device of the present invention, the flushing frame is set as an axis-symmetric multi-deformation frame, and the flushing frame can be driven by the driving assembly to change the axial dimension, so that the flushing frame can change its shape through the driving assembly in the process of moving up and down. In order to adapt to the size change of the blade in the length direction; by setting the flushing pipe and the flushing nozzle on the inside of the flushing rack, the water column sprayed by the flushing nozzle can wash the surface of the blade, so as to realize the cleaning of the blade surface; The entire blade can be cleaned, the labor intensity is low, and it is safe and reliable.

Other advantages, objects, and features of the present invention will appear in part from the description that follows, and in part will be appreciated by those skilled in the art from the study and practice of the invention.

Description of drawings

1 is a schematic top view of a wind turbine blade maintenance device according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional structural diagram of FIG. 1 taken along the A-A direction.

Detailed ways

The present invention will be further described in detail below with reference to the embodiments and accompanying drawings, so that those skilled in the art can refer to the description text and implement accordingly.

It should be understood that terms such as "having", "comprising" and "including" as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

It should be noted that in the description of the present invention, the terms "horizontal", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientation or positional relationship indicated by "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, and It is not indicated or implied that the indicated device or element must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention.

As shown in Figure 1 and Figure 2, the present invention provides a wind turbine blade maintenance device, including:

The support frame 1 is set horizontally, and the middle part of the support frame 1 is hollow;

The flushing rack 2 is horizontally erected in the middle of the support rack 1. The flushing rack 2 is an axisymmetric polygonal frame. The inner side of the flushing rack 2 is provided with a flushing pipe 3 along its circumferential direction. The inner side of the flushing pipe 3 A plurality of flushing nozzles 4 are arranged at intervals along its length direction; wherein,

The adjacent sides of the flushing rack 2 are hinged to each other, and the axial dimension of the flushing rack 2 can be changed under the driving of the driving assembly.

In the above embodiment, the wind turbine blade maintenance device includes a support frame, a flushing frame, a flushing pipe and a drive assembly. The support frame is horizontally arranged and the middle part is hollowed out. Specifically, the support frame is preferably a rectangular or cuboid frame, so as to facilitate the installation of the flushing frame; The sides are hinged to each other; the flushing pipe is arranged on the inner side of the flushing rack and along its circumference, the flushing pipe is a hose, one end of which is closed, and the other end is connected with the water pipe joint set on the top of the flushing rack, and the water pipe joint is connected to the outside through the pipe. The water outlet of the high-pressure water pump is connected with the water outlet of the high-pressure water pump, and the water inlet of the high-pressure water pump is connected with the external water source. The inner side of the flushing pipe is spaced with a plurality of flushing nozzles along its length direction; the driving component is arranged on the support frame and connected with the flushing frame. In order to drive the washing frame to deform, the axial dimension of the washing frame is changed to adapt to the size change of the wind turbine blade along its length direction.

When using, first place the wind turbine blade in the cavity enclosed by the flushing pipe and set it in the center, and move the device up to the root of the blade. Adapt to the size change of the blade, make the washing frame sleeve on the outer circumference of the blade but not in contact with it to protect the blade, and then open the washing nozzle, so that the water column sprayed by the washing nozzle is inclined downward to wash the surface of the blade, and the surface of the blade is cleaned. To clean, slowly move the device downward while cleaning, and adjust the axial dimension of the flushing rack through the drive assembly to achieve cleaning of the entire blade.

In the wind turbine maintenance device of the present invention, the flushing frame is set as an axis-symmetric multi-deformation frame, and the flushing frame can be driven by the driving assembly to change the axial dimension, so that the flushing frame can change its shape through the driving assembly in the process of moving up and down. In order to adapt to the size change of the blade in the length direction; by setting the flushing pipe and the flushing nozzle on the inside of the flushing rack, the water column sprayed by the flushing nozzle can wash the surface of the blade, so as to realize the cleaning of the blade surface; The entire blade can be cleaned, the labor intensity is low, and it is safe and reliable.

In another embodiment, in the wind turbine blade maintenance device, the flushing frame 2 is a hexagonal frame, comprising two oppositely arranged long sides 5 and four hinged with both ends of the long sides 5 The short side 6 of the flush rack 2 is hinged between the adjacent sides of the flushing rack 2 through a pin shaft; the drive assembly includes: a worm 7, which is arranged horizontally, and the two ends of the worm 7 are fixed with threaded rods along its axial direction. 8. The end of the threaded rod 8 is rotatably connected to the support frame 1 through a bearing; the worm wheel 9 is engaged with the worm screw 7, and the worm wheel 9 is driven by a positive and negative motor fixed on the support frame 1. 10 drive rotation; connecting rod 11, which is parallel to the worm 7 and located on the same horizontal plane, the two ends of the connecting rod 11 are respectively fixedly connected with the support frame 1; two first driving rods 12, which are horizontally arranged; On both sides of the worm 7, and perpendicular to the threaded rod 8 and the connecting rod 11, one end of each first drive rod 12 is threadedly sleeved with the threaded rod 8 through a threaded sleeve, and the threaded The sleeve is provided with an internal thread that cooperates with the threaded rod 8, and the other end is slidably sleeved with the connecting rod 11 through a sliding sleeve, and the sliding sleeve is slidably connected with the connecting rod 11 along its length direction; two two second driving rods 13, which are arranged between the two first driving rods 12 and are oppositely arranged, each second driving rod 13 is arranged horizontally and is arranged along the axis of the flushing rack 2 parallel to its length direction, One end of each second drive rod 13 is vertically and fixedly connected to the middle of the adjacent first drive rod 12, and the other end is fixedly connected to the hinge shafts of the two adjacent short sides 6; the two first telescopic rods 14, which are Horizontally arranged on both sides of the worm 7 and parallel to the first drive rod 12, one end of each first telescopic rod 14 is rotatably connected to the threaded rod 8 through a bearing, and the other end is connected to the adjacent long side. 5. Fixed connection; two second telescopic rods 15, which are arranged opposite to the two first telescopic rods 14, one end of each second telescopic rod 15 is fixedly connected to the connecting rod 11, and the other end is connected to the adjacent The long side 5 is fixedly connected; wherein, the threaded rod 8 is a bidirectional threaded rod, one end of a first driving rod 12 is connected with the forward thread of the threaded rod 8, and one end of the other first driving rod 12 is connected with the Reverse threaded connection of threaded rod 8. Here, a preferred structure of a flushing rack and a drive assembly is listed. By controlling the forward or reverse rotation of the forward and reverse motors, the driving force of the forward and reverse motors can drive the first drive rod after being driven by the worm gear and the threaded rod. It moves toward or away from the second driving rod, and then drives the hinge shafts of the two adjacent short sides on the flushing rack to move toward or against each other through the second driving rod, so as to realize the change of the axial dimension of the flushing rack, and has a simple structure, Easy to operate.

In another embodiment, in the wind turbine blade maintenance device, one end of the second driving rod 13 penetrates the first driving rod 12 and passes through the L provided on both sides of the second driving rod 13 The shape reinforcing plate 16 is vertically and fixedly connected to the first driving rod 12 to ensure that the second driving rod 13 is always vertical to the first driving rod 12 , thereby making the shape change of the flushing rack 2 stable and controllable.

In another embodiment, in the wind turbine blade maintenance device, a range finder 17 is fixed in the middle of the top surface of one of the long sides 5 of the washing frame 2, and the range finder 17 is connected with the positive The controller of the reverse motor 10 is connected to control the forward or reverse rotation of the forward and reverse motor 10 according to the distance between the distance meter 17 and the blade measured by the distance meter 17, and adjust the shape of the flushing rack 2 so that the The distance between the long side 5 and the blade is within a preset range, so as to improve the cleaning effect.

Further, this embodiment may also include the following technical details: the long side 5 of the flushing rack 2 is arranged below the short side 6, and the other ends of the first telescopic rod 14 and the second telescopic rod 15 pass through the vertical The provided connecting block 18 is fixedly connected with the corresponding long side 5; a photoelectric switch (not shown) is arranged above each flushing nozzle 4, and the photoelectric switch is connected with the corresponding flushing nozzle. When the photoelectric switch detects the reflection of the blade When the signal is turned on, control the corresponding flushing nozzle to open, otherwise it will not open, so as to control the opening and closing of the flushing nozzle as required, so that the water column sprayed by the opened flushing nozzle can be sprayed to the surface of the blade, saving water.

In another embodiment, the wind turbine blade maintenance device further includes: a guide assembly, which is arranged below the washing frame 2, and the guide assembly includes two third telescopic rods 19, which are arranged Below and parallel to the two second driving rods 13 , the two third telescopic rods 19 are arranged opposite to each other, and one end of each third telescopic rod 19 is fixedly connected to the support frame 1 , and the third telescopic rod 19 is fixedly connected to the support frame 1 . A spring 24 is sleeved on the outside of the telescopic rod 19; two U-shaped plates 20 are vertically arranged and their open ends are opposite to each other, and the two U-shaped plates 20 are in one-to-one correspondence with the two third telescopic rods 19. The closed end of each U-shaped plate 20 is fixedly connected with the other end of the corresponding third telescopic rod 19; two guide pulleys 21 are arranged horizontally and correspond to the two U-shaped plates 20 one-to-one, each guide pulley 21 It is arranged in the corresponding U-shaped plate 20 and is rotatably connected with it. Here, a guide assembly is added. When in use, the two sides of the blade are clamped in the corresponding guide pulley. During the up and down movement of the device, due to the existence of the third telescopic rod and the spring, the two sides of the guide pulley and the blade are made The sides are always in contact to guide the up and down movement of the unit and keep the blades centered in the flushing rack at all times.

In another embodiment, in the wind turbine blade maintenance device, a plurality of balls (not shown) are embedded in the chute of the guide pulley 21 at intervals along its circumferential direction, so as to reduce the gap between the guide pulley and the blade. friction force.

In another embodiment, the wind turbine blade maintenance device further includes: a scrubbing assembly, which includes two cleaning rollers 22, which are in one-to-one correspondence with the two guide pulleys 21, each cleaning roller The wheel 22 is arranged below the corresponding guide pulley 21 and is rotatably connected with the U-shaped plate 20. The side wall of the cleaning roller 22 is provided with a first brush; two cleaning belts 23 are arranged on the On the front and rear sides of the two U-shaped plates 20, one end of each cleaning belt 23 is rotatably connected with the outer side wall of one of the U-shaped plates 20, and the other end is rotatably connected with the corresponding outer side wall of the other U-shaped plate 20. Each cleaning belt 23 is a high-strength elastic belt, and the elastic belt is provided with a second brush. Here, a scrubbing component is added. When in use, the first brush on the cleaning roller and the second brush on the cleaning belt are in contact with the surface of the blade, so as to scrub the surface of the blade while the device moves up and down, further improving Leaf cleaning effect.

In another embodiment, the wind turbine blade maintenance device further includes: a lifting assembly, which includes a hoist (not shown), which is provided on the support frame 1 opposite to the forward and reverse motor 10 one side of the hoist; a lifting lug (not shown), which is set on the side of the support frame 1 where the front and back motors 10 are arranged, and the lifting lug is arranged opposite to the hoist; a crank arm lift (not shown), It is set on the ground, and a fixed pulley (not shown) is fixed on the lifting platform of the crank lift; one end of the wire rope (not shown) is connected to the lifting lug, and the other end is connected to the lifting lug after passing through the fixed pulley. The hoist is connected. Here, a lifting component is added. When in use, first place the wire rope in the fixed pulley and connect one end of the wire rope to the lifting lug, then start the crank lift, adjust the lifting platform to the top of the blade root, and then connect the other end of the wire rope to the lifting lug. One end is connected to the hoist, and the hoist is started, so that the hoist tightens the wire rope, and then the device can be automatically raised and lowered by controlling the hoist.

Although the embodiment of the present invention has been disclosed as above, it is not limited to the application listed in the description and the embodiment, and it can be applied to various fields suitable for the present invention. For those skilled in the art, it can be easily Therefore, the invention is not limited to the specific details and illustrations shown and described herein without departing from the general concept defined by the appended claims and the scope of equivalents.

Claims (5)

1. wind turbine blade maintenance device, is characterized in that, comprises: a support frame, which is arranged horizontally, and the middle part of the support frame is hollow; A flushing rack, which is horizontally erected in the middle of the supporting rack, the flushing rack is an axis-symmetrical hexagonal frame, including two oppositely arranged long sides and four short sides hinged with both ends of the long sides , the inner side of the flushing rack is provided with a flushing pipe along its circumferential direction, and the inner side of the flushing pipe is provided with a plurality of flushing nozzles at intervals along its length direction; A drive assembly includes a worm, which is arranged horizontally, two ends of the worm are fixed with threaded rods along its axial direction, and the ends of the threaded rods are rotatably connected to the support frame; a worm wheel, which is connected to the worm The worm wheel is driven to rotate by the positive and negative motors fixed on the support frame; the connecting rod is parallel to the worm and located on the same horizontal plane, and the two ends of the connecting rod are respectively fixed to the support frame connection; two first drive rods, which are horizontally arranged on both sides of the worm, and are perpendicular to the threaded rod and the connecting rod, and one end of each first drive rod is threadedly sleeved with the threaded rod, The other end is slidably sleeved with the connecting rod; two second driving rods are arranged between the two first driving rods and are opposite to each other, each second driving rod is horizontally arranged, and each second driving rod is One end is fixedly connected vertically with the middle of the adjacent first drive rod, and the other end is fixedly connected with the hinge shafts of the two adjacent short sides; the two first telescopic rods are horizontally arranged on both sides of the worm, and parallel to the first drive rod, one end of each first telescopic rod is rotatably connected to the threaded rod, and the other end is fixedly connected to the adjacent long side; two second telescopic rods are connected to the two The first telescopic rods are arranged opposite each other, one end of each second telescopic rod is fixedly connected with the connecting rod, and the other end is fixedly connected with the adjacent long side; wherein, the threaded rod is a bidirectional threaded rod, and one first driving rod One end of the first drive rod is connected with the forward thread of the threaded rod, and one end of the other first drive rod is connected with the reverse thread of the threaded rod; a guide assembly, which is arranged below the flushing rack, the guide assembly includes two third telescopic rods, which are arranged below and parallel to the two second driving rods, the two third telescopic rods The rods are arranged opposite to each other, one end of each third telescopic rod is fixedly connected with the support frame, and a spring is sleeved on the outside of the third telescopic rod; two U-shaped plates are vertically arranged and the open ends are opposite to each other. The two U-shaped plates are in one-to-one correspondence with the two third telescopic rods, and the closed end of each U-shaped plate is fixedly connected with the other end of the corresponding third telescopic rod; The two U-shaped plates are in one-to-one correspondence, and each guide pulley is arranged in the corresponding U-shaped plate and is rotatably connected with it; The scrubbing assembly includes two cleaning rollers, which are in one-to-one correspondence with the two guide pulleys. A first brush is arranged on the side wall of the roller; two cleaning belts are arranged on the front and rear sides of the two U-shaped plates, and one end of each cleaning belt is rotatably connected to the outer side wall of one of the U-shaped plates , the other end is rotatably connected with the corresponding outer side wall of the other U-shaped plate, the two cleaning belts are elastic belts, and the elastic belt is provided with a second brush; wherein, The long side of the flushing rack is arranged below the short side, and the other ends of the first telescopic rod and the second telescopic rod are fixedly connected to the corresponding long sides through vertically arranged connecting blocks; above each flushing nozzle A photoelectric switch is provided, the photoelectric switch is connected with the corresponding flushing nozzle, when the photoelectric switch detects the reflected signal of the blade, the corresponding flushing nozzle is controlled to be turned on, otherwise it is not turned on. 2 . The wind turbine blade maintenance device according to claim 1 , wherein one end of the second driving rod penetrates the first driving rod, and passes through the L provided on both sides of the second driving rod. 3 . The shaped reinforcing plate is vertically and fixedly connected with the first driving rod. 3 . The wind turbine blade maintenance device according to claim 1 , wherein a distance meter is fixed in the middle of the top surface of one of the long sides of the flushing rack, and the distance meter is connected to the front and back of the washing rack. 4 . Controller connection for the motor. 4 . The wind turbine blade maintenance device according to claim 1 , wherein a plurality of balls are embedded in the chute of the guide pulley at intervals along its circumferential direction. 5 . 5 . The wind turbine blade maintenance device according to claim 1 , further comprising: a lifting assembly, comprising a hoist, which is arranged on a side of the support frame opposite to the forward and reverse motors; 5 . The lifting lug is arranged on the side of the support frame where the positive and negative motors are arranged, and the lifting lug is arranged opposite to the hoist; the crank arm lift is arranged on the ground, and the lifting platform of the crank arm lift is fixed on the lifting platform There is a fixed pulley; one end of the wire rope is connected with the lifting lug, and the other end is connected with the hoist after passing through the fixed pulley.

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