Blade adhesive spreading device

Abstract

The present invention discloses a blade adhesive glue paving device, wherein the glue box is composed of two split half glue boxes spliced ​​together, and the two half glue boxes can be simultaneously rotated in opposite directions along the splicing point by adjusting the expansion mechanism, and the cross-sectional shape and size of the adhesive glue application port can change with the contraction and expansion of the glue box, thereby realizing the adjustment of the cross-sectional area of ​​the glue box, and achieving the purpose of quickly adjusting the cross-sectional area of ​​the adhesive glue under continuous operation. The operation does not require the staff to bend over to operate, and the operation is simple, which improves the work efficiency; moreover, the adjustment method does not require the replacement of parts, and the continuous gluing of different cross-sectional areas from the blade root to the blade tip can be completed through one device, which can also save equipment costs.

Description

Technical Field

[0001] The invention relates to the technical field of manufacturing megawatt-class wind turbine blades, and in particular to a blade adhesive spreading device. Background Art

[0002] Most megawatt-class wind turbine blades are made of sheared webs and half skins bonded together, in which the adhesive plays the role of receiving and transmitting the loads borne by each component. Therefore, adhesive has become an indispensable and important structural material for wind turbine blades. In order to prevent glue leakage and lack of glue between the web and skin, and to meet the design bonding area requirements, a certain amount of surplus is often maintained during coating. At present, the adhesive coating is mainly manual hand-type gluing and manual scraper gluing. Due to different manual thrusts and the volatility of human body movement, the colloid movement speed is uneven, and the cross-section of the adhesive is non-uniform with large fluctuations. Excess adhesive also adds uncertainty to the manufacturing cost. Various blade companies are committed to improving the gluing method to reduce unnecessary waste.

[0003] Chinese invention patent application CN108325795A discloses a glue application device, which includes a glue application box and a push rod. A glue outlet is provided at the bottom of the side of the rear side of the glue application box, and the cross-sectional area of ​​the adhesive glue is controlled by the glue outlet. By using the glue application device, the user can control the height and thickness of the extruded colloid, and can use the push rod to perform continuous and uniform glue application in the web bonding area, thereby improving the glue application efficiency and improving the shortcomings of hand-type gluing. However, the glue application device can only provide a cross-sectional area of ​​adhesive glue, and multiple glue application devices are required when gluing blades of different models.

[0004] Chinese invention patent CN202316261U discloses a 3MW wind turbine blade glue scraping device, in which the glue push box of the device has a slot at the rear end, into which a metal insert can be inserted. The metal insert can be made into different profiles according to the different gluing profiles of the blade, and the glue spreading function of various cross-sectional areas can be realized by replacing different metal inserts. However, the device needs to be shut down and the inserts replaced to change the cross-sectional area of ​​the adhesive; and the glue is likely to remain in the slot, which will make it impossible to remove and install the metal insert after the glue solidifies. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a blade adhesive applying device which can quickly adjust the cross-sectional area of ​​the adhesive in the case of continuous operation.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] A blade adhesive application device, characterized by comprising:

[0008] The glue box comprises two half-box bodies symmetrically arranged on the left and right, the two half-box bodies are surrounded to form a cavity that passes through from front to back, and a glue injection port is provided on the top of the glue box; a V-shaped groove is formed after the opposite end faces of the two half-box bodies are butted together, and a V-shaped spring sheet matching the V-shaped groove is provided in the V-shaped groove, and the V-shaped spring sheet connects the two half-box bodies into one; an anti-sticking cloth is covered and fixed on the inner wall of the glue box; and a glue injection port is provided on the top of the glue box;

[0009] A push rod, the lower end of which is connected to the top of the glue box; and

[0010] The expansion mechanism can make the two halves of the box body rotate in opposite directions with the root of the V-shaped groove as the axis to reduce or expand the cavity and lock the relative positions of the two halves of the box body.

[0011] A further technical solution is that the expansion mechanism is placed in a hollow pushing rod, and the expansion mechanism includes:

[0012] A driving rod, movably disposed inside the push rod;

[0013] two upper connecting rods, the tops of which cross and are hinged to the bottoms of the driving rods;

[0014] Two lower connecting rods cross in the middle and are hinged by a hinge shaft, the two ends of the hinge shaft are fixed on the pushing rod, the upper ends of the two lower connecting rods are hinged to the lower ends of the corresponding upper connecting rods, and the lower ends of the two lower connecting rods are hinged to the tops of the corresponding half box edges; and

[0015] The adjustment assembly is placed on the top of the push rod and is used to lift or press down the drive rod and lock the drive rod.

[0016] A further technical solution is that the adjustment component comprises:

[0017] A pressing handle, the middle of which is rotatably connected to the pushing rod, one end of the pressing handle extends into the pushing rod to form a connecting portion hinged to the driving rod, and the other end extends out of the pushing rod to form a pressing portion; and

[0018] The locking portion is used to limit the free rotation of the pressing handle.

[0019] A further technical solution is that the locking portion comprises:

[0020] Two mounting arms are fixed at intervals on the top of the push rod, and the pressing handle is placed between the two mounting arms;

[0021] A first rotating shaft is fixed to the middle of the pressing handle, with both ends rotatably connected to the corresponding mounting arms, and one end thereof extends out of the mounting arm and is provided with an external thread; and

[0022] The first lock nut is threadedly connected to the first rotating shaft, and the first lock nut can be tightened inwardly to limit the rotation of the first rotating shaft.

[0023] A further technical solution is that the adjustment component comprises:

[0024] A rack fixed to the upper portion of the driving rod;

[0025] A second rotating shaft is rotatably connected to the pushing rod, one end of the second rotating shaft extends out of the pushing rod to form a rotating handle, and the other end extends out of the pushing rod and has an external thread;

[0026] A second lock nut is threadedly connected to the second rotating shaft, and the second lock nut can be tightened inwardly to limit the rotation of the second rotating shaft; and

[0027] The gear is fixed on the second rotating shaft and meshes with the rack.

[0028] A further technical solution is that the expansion mechanism comprises:

[0029] A first crank and a second crank, the middle parts of the two cranks intersect and are hinged together by a hinge shaft, and the lower ends of the two cranks are hinged to the tops of the corresponding half box edges;

[0030] A locking plate, one end of which is fixed to the upper end of the first crank and the other end of which intersects with the second crank, and the locking plate is provided with an arc-shaped hole centered on the hinge shaft on the crank;

[0031] A locking post is fixed on the second crank and is capable of sliding in the arc-shaped hole, and the locking post is provided with an external thread; and

[0032] The third lock nut is threadedly connected to the lock column, and the third lock nut can limit the interaction of the lock column after being tightened.

[0033] A further technical solution is that the device further comprises a hose suspension mechanism, and the hose suspension mechanism comprises:

[0034] A suspension rod is arranged obliquely upward, and its lower end is fixed to the push rod; and

[0035] The balancer is fixed to the upper end of the suspension rod and is used to suspend the hose.

[0036] A further technical solution is that the top surface of the glue applying box formed by the two half box bodies is at an obtuse angle, and the bottoms of the two side surfaces of the glue applying box expand outwards.

[0037] A further technical solution is that the bottom surfaces of the two side walls of the glue box are arc-shaped surfaces.

[0038] A further technical solution is that a flow channel connected to the glue application port and used for guiding the flow downward is provided on one side wall of the glue application box.

[0039] The beneficial effects of adopting the above technical solution are:

[0040] The glue box of the blade adhesive glue paving device is composed of two split half glue boxes spliced ​​together. Through the adjustment of the expansion mechanism, the two half glue boxes can rotate in opposite directions at the same time along the splicing point. The cross-sectional shape and size of the adhesive glue application port can change with the contraction and expansion of the glue box, so as to adjust the cross-sectional area of ​​the glue box and achieve the purpose of quickly adjusting the cross-sectional area of ​​the adhesive glue under continuous operation. This operation does not require the staff to bend over, is simple to operate, and improves work efficiency; moreover, this adjustment method does not require the replacement of parts, and can complete the continuous gluing of different cross-sectional areas from the blade root to the blade tip through one device, which can also save equipment costs.

[0041] In order to ensure that the glue box does not leak glue from the joints after splicing, the glue box is covered with anti-sticking cloth. The anti-sticking cloth is flexible and does not affect the rotation of the two halves of the glue box. It also avoids glue sticking to the inner wall of the glue box, ensuring an effective glue cross-sectional area.

[0042] In addition, since the half plastic box has a certain thickness, in order to ensure that the two halves of the plastic box do not restrict each other when they rotate at the same time after seamless splicing, the docking surface of the half plastic box is set to a slope. A V-shaped groove is formed after the two halves of the plastic box are docked, leaving a margin for the expansion of the glue box to ensure effective adjustment of the cross-section of the glue box without increasing the splicing gap, so as to protect the anti-sticking cloth.

[0043] A matching V-shaped spring sheet is arranged in the V-shaped groove, which can not only elastically connect the two half glue boxes and keep the rotation axis unchanged, but also drive the two half glue boxes to reset after the glue box contracts or expands. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0045] Figure 1 It is a schematic diagram of the structure of the present invention;

[0046] Figure 2 It is a structural schematic diagram of the glue box in the present invention;

[0047] Figure 3 It is a structural schematic diagram of an embodiment of the expansion mechanism of the present invention;

[0048] Figure 4 is a structural schematic diagram of another embodiment of the expansion mechanism of the present invention;

[0049] Figure 5 It is a structural schematic diagram of the expansion mechanism in the fifth embodiment of the present invention. DETAILED DESCRIPTION

[0050] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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 those skilled in the art without creative work are within the scope of protection of the present invention.

[0051] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0052] Embodiment 1

[0053] like Figure 1 and Figure 2 As shown, a specific embodiment of a blade adhesive application device disclosed in the present invention includes a glue application box 100, a pushing rod 200 and an expansion mechanism.

[0054] The glue box 100 comprises two half boxes 110 arranged symmetrically, and the two half boxes 110 are surrounded by a cavity that is connected front and back, and a glue injection port is provided at the top of the glue box 100. A V-shaped groove is formed after the two half boxes 110 face to face relative to each other, and a V-shaped spring piece 120 matching with it is provided in the V-shaped groove, and the V-shaped spring piece 120 connects the two half boxes 110 into one. The inner wall of the glue box 100 is covered and fixed with a piece of anti-sticking cloth 130, such as Teflon cloth, and the edge of the anti-sticking cloth 130 extends to the end face of the glue box 100 and is fixed on the end face of the glue box 100 by screws. The lower end of the push rod 200 is connected to the top of the glue box 100, and the operator can drive the glue box 100 to move by pushing the push rod 200. The expansion mechanism can make the two halves of the box body 110 rotate in opposite directions with the root of the V-shaped groove as the axis to reduce or expand the cavity and lock the relative positions of the two halves of the box body 110.

[0055] When using the gluing device, first set the bottom opening toward the surface of the wind turbine blade, so that the glue box 100 rests against the surface of the wind turbine blade. Next, connect the adhesive mixer to the glue injection port and start it. When the epoxy structural adhesive fills the entire cavity and the outlet on the rear side of the glue box 100 begins to overflow, the user pushes the glue box 100 along the predetermined gluing direction through the push rod 200, thereby achieving the purpose of gluing the surface of the wind turbine blade. By using the gluing device, the user can control the height and thickness of the extruded colloid, and can perform continuous and uniform gluing in the web bonding area, which greatly improves the gluing efficiency.

[0056] The glue box 100 of the blade adhesive glue paving device is composed of two split half glue boxes spliced ​​together. Through the adjustment of the expansion mechanism, the two half glue boxes can rotate in opposite directions at the same time along the splicing point. The cross-sectional shape and size of the adhesive glue application port can change with the contraction and expansion of the glue box 100, so as to adjust the cross-sectional area of ​​the glue box 100 and achieve the purpose of quickly adjusting the cross-sectional area of ​​the adhesive glue in the case of continuous operation. This operation does not require the staff to bend over, is simple to operate, and improves work efficiency; moreover, this adjustment method does not require the replacement of parts, and can complete the continuous gluing of different cross-sectional areas from the blade root to the blade tip through one device, which can also save equipment costs.

[0057] In order to ensure that the glue box 100 does not leak glue from the joints after splicing, the glue box 100 is covered with an anti-sticking cloth 130. The anti-sticking cloth 130 is flexible and does not affect the rotation of the two halves of the glue box. It also avoids glue from adhering to the inner wall of the glue box 100, thereby ensuring an effective glue cross-sectional area.

[0058] In addition, since the half plastic box has a certain thickness, in order to ensure that the two halves of the plastic box do not restrict each other when they rotate at the same time after seamless splicing, the docking surface of the half plastic box is set to a slope. After the two halves of the plastic box are docked, a V-shaped groove is formed, leaving a margin for the expansion of the glue box 100 to ensure effective adjustment of the cross-section of the glue box 100 without increasing the splicing gap, so as to protect the anti-sticking cloth 130.

[0059] A matching V-shaped spring sheet 120 is arranged in the V-shaped groove. The V-shaped spring sheet 120 can not only elastically connect the two half glue boxes and keep the rotation axis unchanged, but also drive the two half glue boxes to reset after the glue box 100 contracts or expands.

[0060] Embodiment 2

[0061] According to one embodiment of the disclosure, the expansion mechanism is implemented in a form that is placed in a hollow push rod 200, such as Figure 3 As shown, the expansion mechanism includes a driving rod 310, two upper connecting rods 320, two lower connecting rods 330 and an adjustment assembly. The driving rod 310 is movably placed in the pushing rod 200, the tops of the two upper connecting rods 320 are crossed and hinged to the bottom of the driving rod 310, the middles of the two lower connecting rods 330 are crossed and hinged by a hinge shaft, the two ends of the hinge shaft are fixed to the pushing rod 200, the upper ends of the two lower connecting rods 330 are hinged to the corresponding lower ends of the upper connecting rods 320, and the lower ends of the two lower connecting rods 330 are hinged to the top of the corresponding edge of the half box body 110; the adjustment assembly is placed on the top of the pushing rod 200, used to lift or press down the driving rod 310, and lock the driving rod 310.

[0062] When the adjusting assembly drives the driving rod 310 to move upward, the lower ends of the two upper connecting rods 320 are brought together and moved upward, thereby driving the upper ends of the two lower connecting rods 330 to move together, and the lower ends to move together and move downward, so that the two half glue boxes rotate downward and move together, and the cross-sectional area of ​​the adhesive glue becomes smaller; conversely, when the adjusting assembly drives the driving rod 310 to move downward, the lower ends of the two upper connecting rods 320 open and move downward, thereby driving the upper ends of the two lower connecting rods 330 to open, and the lower ends to open and move upward, so that the two half glue boxes rotate upward and open, and the cross-sectional area of ​​the adhesive glue becomes larger. After the shape of the glue box 100 is adjusted, the adjusting assembly locks the driving rod 310 to keep the glue box 100 stable.

[0063] Embodiment 3

[0064] According to one disclosed embodiment, regarding the implementation form of the adjustment component, as shown in FIG. Figure 3 As shown, the adjustment assembly includes a pressing handle 341 and a locking portion. The middle portion of the pressing handle 341 is rotatably connected to the pushing rod 200. One end of the pressing handle 341 extends into the pushing rod 200 to form a connection portion hinged to the driving rod 310, and the other end extends out of the pushing rod 200 to form a pressing portion. The locking portion is used to limit the free rotation of the pressing handle 341. By pressing or lifting the pressing portion of the pressing handle, the pressing handle 341 drives the driving rod 310 to move up and down.

[0065] The locking part includes two mounting arms, a first rotating shaft and a first locking nut. The two mounting arms are fixed at an interval at the top of the pushing rod 200. The pressing handle 341 is placed between the two mounting arms. The first rotating shaft is fixed to the middle of the pressing handle 341. Its two ends are rotatably connected to the corresponding mounting arms by means of bearings, and one end extends out of the mounting arm and is provided with an external thread. The first locking nut is threadedly connected to the first rotating shaft. Tightening the first locking nut inward can limit the rotation of the first rotating shaft, thereby locking the driving rod 310.

[0066] Embodiment 4

[0067] According to one embodiment of the disclosure, another implementation form of the adjustment component is as follows: Figure 4As shown, the adjustment assembly includes a rack 342, a second rotating shaft, a second lock nut and a gear 343. The rack 342 is fixed to the upper part of the driving rod 310; the two ends of the second rotating shaft are rotatably connected to the pushing rod 200 by means of bearings, one end of the second rotating shaft extends out of the pushing rod 200 to form a rotating handle, and the other end extends out of the pushing rod 200 and has an external thread; the second lock nut is threadedly connected to the second rotating shaft, and the second lock nut can be tightened inward to limit the rotation of the second rotating shaft; the gear 343 is fixed to the second rotating shaft and meshes with the rack 342. When the second lock nut is loosened, the rotating handle is shaken, and the second rotating shaft drives the gear 343 to rotate. The forward and reverse rotation of the gear 343 can drive the rack 342 to drive the driving rod 310 to move up and down.

[0068] Embodiment 5

[0069] According to one disclosed embodiment, another implementation form of the expansion mechanism is as follows: Figure 5 As shown, it is independently arranged with the push rod 200, and the expansion mechanism includes a first crank 351, a second crank 352, a locking piece 353, a locking column and a third locking nut 354. The middle parts of the first crank 351 and the second crank 352 intersect and are hinged as a whole by a hinge shaft, and the lower ends of the two cranks are hinged to the top of the edge of the corresponding half box body 110; one end of the locking piece 353 is fixed to the upper end of the first crank 351, and the other end intersects with the second crank 352, and the locking piece 353 is provided with an arc hole centered on the hinge shaft on the crank; the locking column is fixed to the second crank 352 and can slide in the arc hole, and the locking column is provided with an external thread; the third locking nut 354 is threadedly connected to the locking column, and the third locking nut 354 can limit the interaction of the locking column after being tightened.

[0070] The operator drives the upper ends of the two cranks to expand, the locking column slides along the arc hole, and the lower ends of the two cranks open and move upward, so that the two half glue boxes rotate upward and open, and the cross-sectional area of ​​the adhesive becomes larger; conversely, the cross-sectional area of ​​the adhesive becomes smaller. After the shape of the glue box 100 is adjusted, the third lock nut 354 is tightened on the locking column, so that the relative position of the two half box bodies 110 is locked.

[0071] Embodiment 6

[0072] According to one disclosed embodiment, the device further includes a hose suspension mechanism, which includes a suspension rod 410 and a balancer 420. The suspension rod 410 is arranged to be tilted upward, and its lower end is fixed to the push rod 200. The balancer 420 is fixed to the upper end of the suspension rod 410 and is used to suspend the hose. By suspending the hose through the setting of the hose suspension mechanism, the operator holding the hose can be saved, which saves labor.

[0073] Embodiment 7

[0074] According to one disclosed embodiment, the top surface of the glue box 100 formed by the two half boxes 110 is at an obtuse angle, and the bottoms of the two side surfaces of the glue box 100 expand outward. The inner surface of the glue box 100 is composed of four sections to form an approximate arc shape, so as to facilitate the contraction and expansion of the two half boxes 110.

[0075] Implementation Example 8

[0076] According to a disclosed embodiment, the bottom surfaces of the two side walls of the glue application box 100 are arc-shaped, the half box body 110 is in smooth contact with the glue application surface, and the part where the rubber boot half box contacts the blade glue application surface adopts an arc design, which is beneficial to the change of the angle of the rubber boot half box and the protection of the glue application plane.

[0077] Embodiment 9

[0078] According to a disclosed embodiment, a flow channel connected to the glue application port and used for downward diversion is provided on one side wall of the glue application box 100, so that after glue injection, the colloid can flow downward to the bottom of the glue box and discharge excess cavitations in the epoxy structural glue.

[0079] The above are only preferred embodiments of the present invention. Any simple modification, deformation and equivalent substitution made by anyone to the present invention based on the contents of the present invention shall fall within the protection scope of the present invention.

Claims

1. A blade adhesive application device, characterized in that: include: The glue box (100) comprises two half box bodies (110) arranged symmetrically on the left and right, the two half box bodies (110) are arranged to form a cavity that passes through from front to back, a glue injection port is provided on the top of the glue box (100), and the bottom surfaces of the two side walls of the glue box (100) are arc-shaped surfaces; the opposite end surfaces of the two half box bodies (110) are butted to form a V-shaped groove, a V-shaped spring sheet (120) matching the V-shaped groove is provided in the V-shaped groove, and the V-shaped spring sheet (120) connects the two half box bodies (110) into one body; the inner wall of the glue box (100) is covered and fixed with an anti-sticking cloth (130); A push rod (200), the lower end of which is connected to the top of the glue box (100); and The expansion mechanism can make the two halves of the box body (110) rotate in opposite directions with the root of the V-shaped groove as the axis to reduce or expand the cavity and lock the relative position of the two halves of the box body (110). The expansion mechanism is placed in the hollow pushing rod (200), and the expansion mechanism includes: A driving rod (310) movably disposed in the pushing rod (200); Two upper connecting rods (320), the tops of which cross and are hinged to the bottom of the driving rod (310); Two lower connecting rods (330) are intersected in the middle and hinged by a hinge shaft, the two ends of the hinge shaft are fixed on the pushing rod (200), the upper ends of the two lower connecting rods (330) are hinged to the lower ends of the corresponding upper connecting rods (320), and the lower ends of the two lower connecting rods (330) are hinged to the top of the edge of the corresponding half box body (110); and The adjustment assembly is placed on the top of the pushing rod (200) and is used to lift or press down the driving rod (310) and lock the driving rod (310).

2. The blade adhesive application device according to claim 1, characterized in that: The adjustment component comprises: A pressing handle (341), the middle of which is rotatably connected to the pushing rod (200), one end of the pressing handle (341) extends into the pushing rod (200) to form a connection portion hinged to the driving rod (310), and the other end extends out of the pushing rod (200) to form a pressing portion; and The locking portion is used to limit the free rotation of the pressing handle (341).

3. The blade adhesive application device according to claim 2, characterized in that: The locking portion comprises: Two mounting arms are fixed at intervals on the top of the pushing rod (200), and the pressing handle (341) is placed between the two mounting arms; A first rotating shaft is fixed to the middle of the pressing handle (341), with both ends rotatably connected to the corresponding mounting arms, and one end thereof extends out of the mounting arm and is provided with an external thread; and The first lock nut is threadedly connected to the first rotating shaft, and the first lock nut can be tightened inwardly to limit the rotation of the first rotating shaft.

4. The blade adhesive application device according to claim 1, characterized in that: The adjustment component comprises: A rack (342) fixed to the upper portion of the driving rod (310); A second rotating shaft is rotatably connected to the pushing rod (200), one end of the second rotating shaft extends out of the pushing rod (200) to form a rotating handle, and the other end extends out of the pushing rod (200) and has an external thread; A second lock nut is threadedly connected to the second rotating shaft, and the second lock nut can be tightened inwardly to limit the rotation of the second rotating shaft; and The gear (343) is fixed on the second rotating shaft and meshes with the rack (342).

5. The blade adhesive application device according to claim 1, characterized in that: The device also includes a hose suspension mechanism, and the hose suspension mechanism includes: A suspension rod (410) is arranged to tilt upward, and its lower end is fixed to the pushing rod (200); and The balancer (420) is fixed to the upper end of the suspension rod (410) and is used to suspend the rubber hose.

6. The blade adhesive application device according to claim 1, characterized in that: The top surface of the glue applying box (100) formed by the two half box bodies (110) is at an obtuse angle, and the bottoms of the two side surfaces of the glue applying box (100) expand outwards.

7. The blade adhesive application device according to claim 1, characterized in that: A flow channel is provided on one side wall of the glue application box (100), which is connected to the glue application port and is used for guiding the flow downward.

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