A device for removing residual glue inside wind turbine blades

Abstract

This invention provides a device for removing residual adhesive from the inside of wind turbine blades, relating to wind turbine blade processing equipment. The device includes: a collection mechanism comprising a housing, two rollers, two scrapers, and a first drive component. Each roller has multiple grooves on its surface. Each scraper is positioned behind a roller, with protruding teeth at its front end. The protruding teeth of each scraper insert into the grooves of a roller. The first drive component connects the two rollers, driving them to rotate in opposite directions, drawing residual adhesive from inside the wind turbine blade into the grooves. The grooves move along the protruding teeth, scraping the residual adhesive out. The invention also includes a conforming mechanism and a transfer mechanism. The advantages of this invention are: it solves the problems of highly viscous, poorly flowing residual adhesive that is difficult to collect, and the problem of removing residual adhesive from areas inaccessible to manual labor; it allows for continuous and efficient removal of residual adhesive from wind turbine blades; and it ensures that residual adhesive can still be completely removed even when the adhesive removal surface changes.

Description

Technical Field

[0001] This invention relates to the field of wind turbine blade processing equipment technology, and in particular to a device for removing residual adhesive inside wind turbine blades. Background Technology

[0002] In the process of mold assembly for wind turbine blades, adhesive is first applied to the blade's web, main beam cap, and leading and trailing edge areas. Then, the main beam cap and pressure surface shell of the blade are bonded together using a blade mold. Figure 1 As shown, after mold closing, a large amount of residual adhesive 300 will be extruded from the leading edge 100, both sides of the web 200, and the trailing edge and adhere to the edge of the bonding corner. This residual adhesive will, firstly, increase the weight of the blade, causing it to fail to meet the factory standards due to excessive weight; secondly, the residual adhesive may fall off during blade operation, generating noise and damaging the baffles, blade tip shells, lightning protection systems, and clogging drainage holes, causing significant safety hazards.

[0003] In the production of wind turbine blades, the common method for removing residual adhesive is for workers to enter the blade and use adhesive removal tools to clean it. However, due to the narrow space at the blade tip, workers cannot perform residual adhesive cleaning, resulting in a large amount of adhesive remaining inside the blade. Furthermore, the residual adhesive is very viscous, and the angle and radius of curvature of its adhesion surface will change, making the residual adhesive even more difficult to collect and remove. Summary of the Invention

[0004] In view of this, in order to solve the problem of removing residual adhesive inside wind turbine blades during the production process, embodiments of the present invention provide a device for removing residual adhesive inside wind turbine blades.

[0005] An embodiment of the present invention provides a device for removing residual adhesive inside wind turbine blades, comprising:

[0006] The collection mechanism includes a housing, two rollers, two scrapers, and a first drive component disposed within the housing. The front end of the housing is open. The two rollers are arranged side by side. Each roller has multiple grooves on its surface. Each scraper is disposed behind one of the rollers. The front end of each scraper has protruding teeth. The protruding teeth of each scraper are inserted into the grooves of one of the rollers. The first drive component connects the two rollers to drive them to rotate in opposite directions, thereby rolling the residual adhesive inside the wind turbine blades into the grooves. The grooves move along the protruding teeth to scrape out the residual adhesive.

[0007] A compliant mechanism is connected to the rear end of the housing to allow the housing to rotate;

[0008] And a transfer mechanism connected to the conforming mechanism to convey residual adhesive from inside the housing to the outside.

[0009] Furthermore, the groove includes a circumferential groove, each of the circumferential grooves being arranged circumferentially around the roller, and the circumferential grooves being spaced apart along the axial direction of the roller.

[0010] Furthermore, the groove also includes axial grooves, each of which is arranged along the axial direction of the roller and is spaced apart along the circumferential direction of the roller.

[0011] Furthermore, the cross-section of the circumferential groove is rectangular, the shape of the protruding tooth is a rectangular block, and the protruding tooth is embedded in the circumferential groove.

[0012] Furthermore, the first driving component includes a first driving motor and a gear set driven by the first driving motor. The gear set includes a plurality of gears meshing in sequence, wherein two of the gears are respectively connected to two of the rollers so that the two rollers can rotate in opposite directions.

[0013] Furthermore, the conforming mechanism includes a base plate and multiple sliding members. The base plate is provided with multiple arc-shaped grooves. Each sliding member is disposed in one of the grooves. Each sliding member includes a slider and two elastic members. The slider is slidably disposed in the groove and its two ends are respectively connected to one end of the two elastic members. The other ends of the two elastic members are respectively connected to the two ends of the groove. Each slider is connected to the rear end of the housing, and the rear end of the base plate is connected to the transfer mechanism.

[0014] Furthermore, the arc lengths of each of the grooves are the same, and they are evenly distributed on a circumference.

[0015] Furthermore, the elastic element is a spring.

[0016] Furthermore, the transfer mechanism is a screw conveyor.

[0017] Furthermore, the screw conveyor includes a transfer tube, a screw blade, and a second drive component. The front end of the transfer tube is connected to the conforming mechanism, and the rear end is connected to the second drive component. The screw blade is disposed inside the transfer tube, and a glue outlet is provided on one side of the transfer tube. The second drive component is connected to the rear end of the screw blade to drive the screw blade to rotate so that residual glue is output from the glue outlet.

[0018] The beneficial effects of the technical solutions provided by the embodiments of the present invention are as follows:

[0019] 1. The present invention provides a residual adhesive removal device for the inside of wind turbine blades. The collection mechanism squeezes and rolls in residual adhesive through grooves on the surface of two rollers, then squeezes out the residual adhesive from the grooves through a scraper, and then outputs the collected residual adhesive through a transfer mechanism. This solves the problems of highly viscous and poorly fluid residual adhesive that is difficult to collect, as well as the problem of removing residual adhesive from areas of wind turbine blades that are inaccessible to humans. At the same time, the device is driven to move inside the wind turbine blade, which can continuously remove residual adhesive from the wind turbine blade, thus achieving continuous and efficient removal of residual adhesive.

[0020] 2. The present invention provides a wind turbine blade internal residual adhesive removal device. When the curvature and slope of the adhesive removal surface inside the wind turbine blade change, the collection mechanism moves with the change of the adhesive removal surface. The collection mechanism drives the slider in the conforming mechanism to slide, so that the elastic element extends and retracts to adjust the state, thereby making the collection mechanism conform to the change of the adhesive removal surface. At the same time, the elastic element also provides a pre-tightening force to the collection mechanism, so that it better fits the adhesive removal surface, thereby enhancing the adaptability of the removal device and ensuring that the residual adhesive can still be cleaned when the adhesive removal surface changes. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the distribution of residual adhesive inside wind turbine blades in the background technology;

[0022] Figure 2 A schematic diagram of a device for removing residual adhesive from the inside of wind turbine blades according to the present invention;

[0023] Figure 3 It is an exploded view of the collection agency;

[0024] Figure 4 This is a schematic diagram of the roller and scraper;

[0025] Figure 5 It is a three-dimensional diagram that conforms to the structure;

[0026] Figure 6 It conforms to the main view of the structure;

[0027] Figure 7 This is a schematic diagram of the transfer organization.

[0028] In the diagram: 100, leading edge; 200, web; 300, residual glue; 1, collecting mechanism; 101, outer shell; 102, roller; 103, scraper; 104, upper cover plate; 105, gear cover; 106, first drive motor; 107, gear; 108, rotating shaft; 109, first bearing; 2, conforming mechanism; 201, base plate; 202, spring; 203, slider; 204, chute; 3, transfer mechanism; 301, spiral blade; 302, glue outlet tube; 303, oil seal; 304, second bearing; 305, motor blade connector; 306, motor conversion shaft; 307, motor base; 308, second drive motor; 309, glue transfer tube; 310, connecting flange. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be further described below with reference to the accompanying drawings. The following description presents a preferred embodiment of the various possible embodiments of the present invention, intended to provide a basic understanding of the invention, but not intended to identify key or decisive elements of the invention or to limit the scope of protection sought.

[0030] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0031] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0032] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures. Also, it should be understood that, for ease of description, the dimensions of the various parts shown in the figures are not drawn to actual scale.

[0033] In the description of this invention, it should be noted that the circuits, electronic components and modules involved in this invention are all prior art, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this invention does not involve improvements to the internal structure and method.

[0034] It should be further noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0035] Please refer to Figure 2 The present invention provides a device for removing residual adhesive inside wind turbine blades, which mainly includes a collection mechanism 1, a conforming mechanism 2 and a transfer mechanism 3.

[0036] like Figure 3 As shown, the collection mechanism 1 is used to collect residual adhesive inside the wind turbine blades. The collection mechanism 1 mainly includes a housing, two rollers 102, two scrapers 103, and a first drive component disposed within the housing.

[0037] The front end of the housing is open, allowing residual adhesive to be collected to enter through this opening. The housing can be flexibly configured into various shapes to suit different applications; for example, in this embodiment, the front of the housing is rectangular, and the rear end has a cylindrical connector, which is angled. Specifically, the housing consists of a lower outer shell 101 and an upper cover plate 104, which fits over the upper port of the outer shell 101. To facilitate the entry of residual adhesive into the housing, the edges of the front port of the housing are all sharpened.

[0038] The two rollers 102 are arranged side by side, both of which are vertically arranged and are in near contact with each other. Each roller 102 has multiple grooves on its surface. When the two rollers 102 rotate, the residual glue in front of the two rollers 102 will be rolled into and squeezed into each of the grooves.

[0039] like Figure 4 As shown, the groove includes circumferential grooves, each of which is arranged circumferentially around the roller 102, and the circumferential grooves are evenly spaced along the axial direction of the roller 102. Furthermore, the groove may also include axial grooves, each of which is arranged along the axial direction of the roller 102, and the axial grooves are spaced apart circumferentially around the roller 102. The axial grooves, in conjunction with the circumferential grooves, can entrain more residual adhesive.

[0040] Each scraper blade 103 is disposed behind a roller 102. The front end of each scraper blade 103 has protruding teeth, which are inserted into a groove in the roller 102. The shape of the protruding teeth is adapted to the shape of the groove, specifically to the shape of the circumferential groove, so that the protruding teeth can be embedded in the groove. Thus, when the two rollers 102 rotate, the protruding teeth precisely scrape out the residual adhesive in the circumferential groove. The shapes of the protruding teeth and the circumferential groove can be flexibly set according to the actual application scenario. For example, in this embodiment, the cross-section of the circumferential groove is rectangular, and the shape of the protruding teeth is a rectangular block.

[0041] The first driving component connects the two rollers 102 to drive the two rollers 102 to rotate in opposite directions. The first driving component includes a first driving motor 106 and a set of gears 107 driven by the first driving motor 106.

[0042] The gear set 107 includes a plurality of gears 107 meshing sequentially. For example... Figure 3 As shown, in this embodiment, the gear 107 group includes four gears 107 meshing in sequence. The four gears 107 are installed on the upper part of the upper cover plate 104 and arranged in a straight line. A gear cover 105 is provided above the upper cover plate 104, and the four gears 107 are disposed inside the gear cover 105.

[0043] Furthermore, two of the gears 107 are respectively connected to two rollers 102. The two gears 107 located at the edges are respectively mounted on two rotating shafts 108. The lower end of each rotating shaft 108 is rotatably mounted on the bottom surface of the housing 101 via a first bearing 109. The two rollers 102 are respectively mounted on the two rotating shafts 108. The first drive motor 106 is fixed to the gear cover 105, and the output shaft of the first drive motor 106 extends into the gear cover 105 and is connected to the upper end of one of the rotating shafts 108 via a coupling. Thus, the first drive motor 106 can drive the gear set 107, allowing the two rollers 102 to rotate in opposite directions.

[0044] Combined Figure 5 and 6 As shown, the conforming mechanism 2 is connected to the collecting mechanism 1, allowing the collecting mechanism 1 to rotate adaptively. The conforming mechanism 2 mainly includes a base plate 201 and multiple sliding members. The base plate 201 is provided with multiple arc-shaped grooves 204. The base plate 201 is a hollow flange, and the grooves 204 are coaxially arranged with the base plate 201. Generally, the number of grooves 204 can be flexibly set to multiple, with each groove 204 having the same arc length and being evenly distributed on a circumference. In this embodiment, the number of grooves 204 is set to three.

[0045] The number of sliding members is consistent with the number of sliding grooves 204. Each sliding member is disposed within a sliding groove 204, and each sliding member includes a slider 203 and two elastic members. The slider 203 is slidably disposed within the sliding groove 204. Here, the slider 203 is an arc-shaped block, and the diameter and width of the slider 203 are basically the same as those of the sliding groove 204, so that the slider 203 is embedded in the sliding groove 204 and can slide along the sliding groove 204.

[0046] The elastic element is typically a spring 202. The slider 203 has two ends connected to one end of each of the two elastic elements, and the other ends of each elastic element are connected to both ends of the slide groove 204. Each slider 203 is connected to the rear end of the housing, specifically to the rear connector of the housing. When the collecting mechanism 1 is not rotating, the elastic elements maintain their normal length; when the collecting mechanism 1 rotates, one elastic element in each slide groove 204 extends while the other elastic element compresses, causing the conforming mechanism 2 to automatically adapt to the rotation of the collecting mechanism 1.

[0047] like Figure 7 As shown, the transfer mechanism 3 is used to output the residual adhesive collected at the rear of the housing of the collection mechanism 1. The transfer mechanism 3 can generally be a screw conveyor. As in this embodiment, the screw conveyor includes a transfer tube 309, a screw blade 301, and a second drive component.

[0048] The front end of the transfer tube 309 is connected to the conforming mechanism 2. Specifically, the outer wall of the front end of the transfer tube 309 is provided with a connecting flange 310. The front end of the transfer tube 309 is inserted into the base plate 201 and docks with the rear connector. The connecting flange 310 is attached to and securely connected to the base plate 201.

[0049] The rear end of the second driving component is connected to the second driving component, the spiral blade 301 is disposed inside the transfer tube 309, and a glue outlet tube 302 is provided on one side of the transfer tube 309. The second driving component is connected to the rear end of the spiral blade 301.

[0050] Specifically, the second driving component mainly includes a second drive motor 308, a motor base 307, a motor conversion shaft 306, a motor blade connector 305, and bearings. The second drive motor 308 is generally a brushless motor. The motor base 307 is fixedly connected to the upper end of the rotating hose 309. The second drive motor 308 is mounted on the motor base 307. The motor conversion shaft 306 and the motor blade connector 305 are disposed within the motor base 307. The output end of the second drive motor 308 is connected to the motor conversion shaft 306. The motor conversion shaft 306 is a rectangular block. The motor blade connector 305 is a cylinder with a rectangular groove at its upper end. The motor conversion shaft 306 is inserted into the upper end of the motor blade connector 305 and is securely connected to it.

[0051] The second bearing 304 is installed inside the upper end of the glue transfer tube 309. The upper end of the spiral blade 301 passes through the second bearing 304 and is securely connected to the lower end of the motor blade connector 305. An oil seal 303 is also installed on the second bearing 304. The second drive motor 308 can drive the spiral blade 301 to rotate, causing the residual glue at the lower end of the spiral blade 301 to spiral upwards and be extruded through the glue outlet tube 302.

[0052] When the residual adhesive removal device inside the wind turbine blade is in operation, the motor base 307 is fixed to the moving platform. The moving platform drives the device to move inside the wind turbine blade, causing the lower edge of the front port of the collection mechanism 1 to come into contact with the adhesive removal surface inside the wind turbine blade. This allows the residual adhesive on the adhesive removal surface to enter the shell and gradually accumulate. Then, under the driving action of the first drive mechanism, the two rollers 102 rotate in opposite directions, drawing in the residual adhesive inside the shell. The residual adhesive is squeezed into the circumferential and axial grooves on the surface of the rollers 102. At the same time, the scraper 103 scrapes out the residual adhesive in the circumferential groove with its convex teeth, while the residual adhesive in the axial groove falls off after the residual adhesive in the circumferential groove is scraped out. Thus, the residual adhesive is collected at the rear of the shell, located at the lower end of the adhesive transfer tube 309. Then, driven by the second drive motor 308, the spiral blade 301 spirally conveys the collected residual adhesive upwards. Under the squeezing action, the residual adhesive is output from the adhesive outlet tube 302.

[0053] It should be noted that during the removal of residual adhesive from wind turbine blades, the adhesive removal surface inside the wind turbine blades is...

[0054] The curvature and slope of the surface will change. At this time, the housing of the collection mechanism 1 moves with the change of the adhesive removal surface. The housing will drive the slider 203 in the conforming mechanism 2 to move, so that the elastic element can be compressed to adjust the state. In this way, the collection mechanism 1 conforms to the change of the adhesive removal surface. At the same time, the elastic element will also provide a pre-tightening force to the collection mechanism 1, so that it can better fit the adhesive removal surface, thereby enhancing the adaptability of the cleaning device and ensuring that the residual adhesive can still be cleaned when the adhesive removal surface changes.

[0055] In this document, the directional terms such as front, back, top, and bottom are defined based on the position of the components in the accompanying drawings and their relative positions to each other, solely for the purpose of clarity and convenience in expressing the technical solution. It should be understood that these are relative concepts and can vary depending on different methods of use and placement; the use of these directional terms should not limit the scope of protection claimed in this application.

[0056] Where there is no conflict, the embodiments and features described above can be combined with each other. The above descriptions are merely preferred embodiments of the present invention and are not intended to limit the invention. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A device for removing residual adhesive inside wind turbine blades, characterized in that, include: The collection mechanism includes a housing, two rollers, two scrapers, and a first drive component disposed within the housing. The front end of the housing is open. The two rollers are arranged side by side. Each roller has multiple grooves on its surface. Each scraper is disposed behind one of the rollers. The front end of each scraper has protruding teeth. The protruding teeth of each scraper are inserted into the grooves of one of the rollers. The first drive component connects the two rollers to drive them to rotate in opposite directions, thereby rolling the residual adhesive inside the wind turbine blades into the grooves. The grooves move along the protruding teeth to scrape out the residual adhesive. A compliant mechanism is connected to the rear end of the housing to allow the housing to rotate; And a transfer mechanism connected to the conforming mechanism to convey residual adhesive from inside the housing to the outside; The conforming mechanism includes a base plate and multiple sliding members. The base plate is provided with multiple arc-shaped grooves. Each sliding member is disposed in one of the grooves. Each sliding member includes a slider and two elastic members. The slider is slidably disposed in the groove and its two ends are respectively connected to one end of the two elastic members. The other ends of the two elastic members are respectively connected to the two ends of the groove. Each slider is connected to the rear end of the housing. The rear end of the base plate is connected to the transfer mechanism. The transfer mechanism is a screw conveyor.

2. The wind turbine blade internal residual adhesive removal device as described in claim 1, characterized in that: The groove includes a circumferential groove, each of which is arranged circumferentially around the roller, and the circumferential grooves are spaced apart along the axial direction of the roller.

3. The wind turbine blade internal residual adhesive removal device as described in claim 2, characterized in that: The groove also includes axial grooves, each of which is arranged along the axial direction of the roller and is spaced apart along the circumferential direction of the roller.

4. The wind turbine blade internal residual adhesive removal device as described in claim 2, characterized in that: The cross-section of the circumferential groove is rectangular, and the shape of the protruding tooth is a rectangular block. The protruding tooth is embedded in the circumferential groove.

5. The wind turbine blade internal residual adhesive removal device as described in claim 1, characterized in that: The first driving component includes a first driving motor and a gear set driven by the first driving motor. The gear set includes a plurality of gears meshing in sequence, wherein two of the gears are respectively connected to two of the rollers so that the two rollers can rotate in opposite directions.

6. The wind turbine blade internal residual adhesive removal device as described in claim 1, characterized in that: The arc lengths of all the grooves are the same and they are evenly distributed on a circumference.

7. The wind turbine blade internal residual adhesive removal device as described in claim 1, characterized in that: The elastic element is a spring.

8. The wind turbine blade internal residual adhesive removal device as described in claim 1, characterized in that: The screw conveyor includes a transfer tube, a screw blade, and a second drive component. The front end of the transfer tube is connected to the conforming mechanism, and the rear end is connected to the second drive component. The screw blade is disposed inside the transfer tube, and a glue outlet is provided on one side of the transfer tube. The second drive component is connected to the rear end of the screw blade to drive the screw blade to rotate so that residual glue is output from the glue outlet.

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