CN111546666A

CN111546666A - Manufacturing method of large-scale wind driven generator cabin cover

Info

Publication number: CN111546666A
Application number: CN202010395733.5A
Authority: CN
Inventors: 杨骏; 闫成伟
Original assignee: Anhui Tailemar Technology Co ltd
Current assignee: Anhui Tailemar Technology Co ltd
Priority date: 2020-05-12
Filing date: 2020-05-12
Publication date: 2020-08-18
Anticipated expiration: 2040-05-12
Also published as: CN111546666B

Abstract

The invention discloses a manufacturing method of a large-scale wind driven generator cabin cover, which relates to the technical field of wind driven generator manufacturing and comprises the steps of preparation before production, gel coat spraying, forming, appearance inspection, cutting, polishing, hole forming, dimension inspection, surface treatment, assembly, finished product inspection, packaging, warehousing and the like, wherein a scientific management mode is adopted, a plurality of inspection processes are adopted to carry out a plurality of detections on a formed product so as to ensure that the product meets the design requirements, the formed product is further trimmed by the modes of cutting, polishing, surface treatment and the like so as to ensure that the quality grade meets the requirements, compared with the traditional process, the manufacturing method is more scientific and reasonable, a flexible spraying component can be matched with a proper profiling plate according to the shape characteristics of a forming surface and then is arranged on the profiling plate at equal intervals by a flexible spraying mechanism, the spraying uniformity is guaranteed, meanwhile, the automation of spraying can be achieved by the aid of the travelling mechanism, and spraying efficiency is remarkably improved.

Description

Manufacturing method of large-scale wind driven generator cabin cover

Technical Field

The invention belongs to the technical field of wind driven generator manufacturing, and particularly relates to a manufacturing method of a large wind driven generator cabin cover.

Background

The fan blade, the wind power cabin cover and the flow guide cover are key parts of the wind generating set and are all made of composite materials with excellent performance. Important parts of the wind driven generator, such as a main shaft, Bieiyi mathematics, a motor and the like, are all arranged in the cabin cover, so the cabin cover mainly protects equipment from being influenced by the environment and provides installation and maintenance conditions for personnel.

At present, the hand lay-up forming process is widely applied to the manufacture of FRP products, and the process does not need complex equipment and only needs simple moulds and tools, so the process has the advantages of low investment and quick response, is suitable for the development of village and town enterprises in China, is easy to master the production technology, and can be used for production only through short-term training. With the continuous development of the technology, the vacuum glue injection molding is adopted at present, and the speed and the efficiency are high. The prior manufacturing process has the defects of non-standard, long forming period and unstable product quality due to a large amount of manual work, and in addition, a process of spraying gel coats is also adopted before glue injection and felt paving, the process is generally carried out in a manual gel coat spraying mode, the uniformity of spraying is difficult to control, the experience is high, the spraying efficiency is low, and the drying speed is low.

Disclosure of Invention

The present invention aims to provide a method for manufacturing a nacelle cover of a large wind turbine, which solves the above mentioned drawbacks of the prior art.

A manufacturing method of a large-scale wind driven generator cabin cover comprises the following steps:

(1) preparing before production, integrally moving a forming die into a forming area, preparing gel coat and resin material according to a formula for later use, and preparing a composite felt and an auxiliary piece to be laid;

(2) gel coat spraying, namely placing the molding surface of a molding mold upwards, descending a flexible spraying assembly (1) to the position right above the molding mold by using a traveling crane, starting a gel injection pump, pumping out the gel coat in a gel barrel by using the gel injection pump, injecting the gel coat into a gel injection pipe in the flexible spraying assembly (1) by using a plurality of hoses, and uniformly spraying the gel coat on the molding surface by using the flexible spraying assembly (1), meanwhile, carrying out primary drying treatment on the sprayed molding surface by using a drying mechanism on the flexible spraying assembly, and manually coating the part which is not coated on the molding surface after the gel coat is cured so as to ensure that the spraying is comprehensive;

(3) and (2) molding, namely paving the composite felt on the molding surface of the lower mold layer by layer, paving related auxiliary pieces according to a design drawing, closing the upper mold and the lower mold after paving, vacuumizing the mold cavity after closing the mold by using a vacuum pump, stopping vacuumizing when the negative pressure reaches-0.215 +/-0.005 MPa, starting injecting glue into the mold cavity until the mold cavity is filled with resin materials, closing the vacuum pump, curing and molding at room temperature, and finally demolding to obtain a semi-finished product.

(4) Performing appearance inspection, and inspecting whether the appearance of the cured and molded semi-finished product has deformation and concave-convex points;

(5) cutting, polishing and perforating, cutting off redundant leftover materials on the semi-finished product, polishing to improve the surface flatness of the semi-finished product, and perforating corresponding parts of the semi-finished product according to a design drawing for subsequent assembly;

(6) dimension inspection, namely measuring and inspecting the outline dimension of the semi-finished product by using a measuring tool to ensure that the dimension meets the design requirement;

(7) surface treatment and assembly, namely repairing defects such as scratches, bulges and the like possibly existing on the surface of a semi-finished product, and finally assembling a plurality of components forming the cabin cover into a whole to obtain a required product;

(8) inspecting finished products, namely inspecting the appearance and the size of the assembled products to ensure no errors;

(9) and (6) packaging and warehousing.

Preferably, a release agent is sprayed on the molding surface before the step (2).

Preferably, the thickness of the gel coat is 0.2-0.3 mm.

Preferably, the composite felt comprises a balsa wood sandwich material with the mass percent of 5-10%.

Preferably, the flexible spraying assembly comprises a top frame, a travelling mechanism, a U-shaped plate, a supporting rod, a profiling plate and a spraying mechanism, wherein the travelling mechanism is installed on two sides of the top frame and can horizontally move along the length direction of the top frame;

spraying mechanism includes a plurality of spraying base and connects the rope, the bottom integrated into one piece of spraying base has the shower nozzle, and the top surface of spraying base is equipped with and has the internal screw thread spread groove, is used for dismantling in the spread groove to connect the injecting glue pipe, and the both sides of spraying base still integrated into one piece have the L shaped plate and form a spout that link up, connect through connecting the rope between two adjacent spraying bases, and equidistant ground sliding connection of a plurality of spraying bases is on the profiling plate, the shape of profiling plate cooperatees and is equipped with the rectangular hole that sets up along its length direction on the profiling plate with the shape of profiled surface.

Preferably, a through threaded hole is further formed in the horizontal section of the L-shaped plate.

Preferably, running gear includes support piece, walking wheel, leading wheel, servo motor, drive gear and rack, support piece has two and is located the both sides of roof-rack respectively, all installs the walking wheel that two symmetries set up in every support piece, and two walking wheels roll connection are on the side lever of roof-rack both sides, and still rotate in one of them support piece and be connected with the leading wheel, leading wheel roll connection in the side of side lever and with walk the perpendicular setting of wheel, the side of the side lever that is located another support piece one side is connected with along the rack that roof-rack length direction set up, the rack toothing has drive gear, drive gear is connected to servo motor's output, servo motor installs in support piece's top surface.

Preferably, a stirring mechanism is further mounted on the barrel cover of the glue barrel, the stirring mechanism and the drying mechanism are both connected to the U-shaped plate through a linkage mechanism and powered by the U-shaped plate, the glue barrel is placed on the bottom plate, the bottom plate is mounted on the top frame, and the glue injection pump is also mounted on the bottom plate and connected to the inside of the glue barrel through a pipeline;

the stirring mechanism comprises a stirring shaft, a stirring blade and a driven bevel gear, the stirring shaft is rotationally connected to the barrel cover, the stirring blade is arranged at the lower part of the stirring shaft and is positioned in the rubber barrel, and the upper end of the stirring shaft is connected to the driven bevel gear;

the drying mechanism comprises a fan, a drying cylinder, an electric heating net, a three-way pipe, electromagnetic valves and an exhaust plate, the fan is connected to the air inlet end of the drying cylinder through a pipeline, the electric heating net is installed in the drying cylinder, the air outlet end of the drying cylinder is connected to the three-way pipe, the two air outlet ends of the three-way pipe are connected with the electromagnetic valves, the air outlet ends of the electromagnetic valves are connected to the air inlet at the upper end of the exhaust plate through hoses, the exhaust plate is provided with two air outlets which are symmetrically arranged at the front side and the rear side of the support rod, the exhaust plate is connected with the support rod through a connecting plate, the exhaust;

the linkage mechanism comprises a rack, a cylindrical gear, a main belt pulley, a first auxiliary belt pulley, a second auxiliary belt pulley and a driving bevel gear, the rack is installed on a U-shaped plate through a base plate and meshed with the cylindrical gear, the cylindrical gear is coaxially arranged with the main belt pulley through a connecting shaft and is rotatably connected onto a first support, the first support is installed on the bottom surface of the top frame, the main belt pulley is connected onto the first auxiliary belt pulley through a belt, the first auxiliary belt pulley is connected onto the second auxiliary belt pulley through a long shaft and symmetrically arranged with the first auxiliary belt pulley and the second auxiliary belt pulley, the long shaft is rotatably connected onto an inner bearing of the second support, the second support is installed on the top frame, the driving bevel gear is also installed on the long shaft and is meshed with a driven bevel gear, the second auxiliary belt pulley is connected to a power input end of a fan through a belt.

Preferably, the supporting piece comprises a top plate, a bottom plate and a vertical plate, the vertical plate is connected between the top plate and the bottom plate and fixes the top plate and the bottom plate, and supports for mounting the travelling wheels are arranged on the bottom surface of the top plate and the top surface of the bottom plate.

Preferably, the top plate and the bottom plate on one side of the guide wheel are also provided with mounting holes, bearings are mounted in the mounting holes, and the guide wheel is mounted in the upper bearing and the lower bearing through a shaft rod.

The invention has the advantages that:

(1) the method is characterized in that a scientific management mode is adopted, multiple detection procedures are adopted to carry out multiple detections on a formed product to ensure that the product meets the design requirements, and meanwhile, the formed product is further trimmed by cutting, polishing, surface treatment and other modes to ensure that the quality grade of the formed product meets the requirements;

(2) the thickness of the gel coat can ensure the bonding force with the composite felt, the dosage of resin can be well controlled, the addition of the light wood sandwich material can obviously increase the specific rigidity and the specific strength of the engine room cover and reduce the deformation, and the weight reduction and the reinforcement of the engine room cover can be realized by virtue of the characteristic of light weight;

(3) the special flexible spraying component for spraying gel coats is also designed, the special flexible spraying component can be matched with a proper profile plate according to the shape characteristics of a forming surface, and the flexible spraying mechanism is arranged on the profile plate in an equidistant mode to ensure the spraying uniformity.

(4) When the flexible spraying component moves, the stirring mechanism and the drying mechanism can synchronously run by means of the linkage mechanism, so that the spraying of gel coats is better realized, and the spraying quality is improved.

Drawings

Fig. 1 and fig. 2 are schematic structural diagrams of the flexible spray assembly in different viewing angles.

Fig. 3 and 4 are schematic structural views of different components of the traveling mechanism of the invention.

FIG. 5 is an assembly view of the profile plate and the spray mechanism of the present invention.

Fig. 6 is a schematic structural view of the spray mechanism of the present invention.

Fig. 7 and 8 are schematic structural views of different viewing angles of the spray base part in the invention.

FIG. 9 is a schematic view of the operation of the stirring mechanism of the present invention.

Fig. 10 is a partial schematic view of the linkage mechanism and the drying mechanism of the present invention.

Fig. 11 is a schematic view of the inside of the drying cylinder in the present invention.

Fig. 12 is a schematic structural view of the exhaust plate of the present invention.

FIG. 13 is a schematic representation of the operation of the flexible spray assembly of the present invention.

FIG. 14 is a schematic view of another alternative profile plate of the present invention.

Fig. 15 is a flow chart of the operation of the present invention.

Wherein:

1-flexible spraying component, 11-top frame, 12-walking mechanism, 121-support, 1211-top plate, 1212-bottom plate, 1213-vertical plate, 1214-bearing, 1215-support, 122-walking wheel, 123-guide wheel, 124-servo motor, 125-driving gear, 126-rack, 13-U-shaped plate, 14-supporting rod, 15-profile plate, 151-strip hole, 16-spraying mechanism, 161-spraying base, 162-connecting rope, 163-spray head, 164-L-shaped plate, 165-sliding groove, 166-threaded hole, 167-fastening screw and 168-connecting groove;

2-molding surface of a molding die, 3-glue barrel, 4-glue injection pump and 5-bottom plate;

6-drying mechanism, 61-blower, 62-drying cylinder, 63-electric heating net, 64-three-way pipe, 65-electromagnetic valve, 66-exhaust plate, 67-connecting plate, 68-exhaust hole;

7-stirring mechanism, 71-stirring shaft, 72-stirring blade, 73-driven bevel gear;

8-linkage mechanism, 81-power rack, 82-cylindrical gear, 83-main belt pulley, 84-auxiliary belt pulley I, 85-auxiliary belt pulley II, 86-driving bevel gear, 87-connecting shaft, 88-support I, 89-long shaft, 810-support II and 811-machine base.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 15, a method for manufacturing a nacelle cover of a large wind turbine includes the steps of:

(2) gel coat spraying, namely placing the molding surface of a molding mold upwards, downwards moving a flexible spraying assembly 1 to the position right above the molding mold by using a traveling crane, starting a gel injection pump, pumping out the gel coat in a gel barrel by using the gel injection pump, injecting the gel coat into a gel injection pipe (generally adopting a flexible hose) in the flexible spraying assembly 1 by using a plurality of hoses, and uniformly spraying the gel coat on the molding surface through the flexible spraying assembly 1, simultaneously, primarily drying the sprayed molding surface by using a drying mechanism on the flexible spraying assembly 1, and manually coating the part which is not coated on the molding surface after the gel coat is cured so as to ensure that the spraying is comprehensive;

(9) and (6) packaging and warehousing.

In the above steps (4), (6) and (8), if the product is unqualified, the product is treated as unqualified product, such as abandonment, trimming and the like.

In this embodiment, before the step (2), a release agent is sprayed on the forming surface, the thickness of the gel coat is 0.2-0.3mm, preferably 0.25mm, and the composite felt contains a balsawood sandwich material with a mass percentage of 5% -10%.

As shown in fig. 1 to 14, the flexible spraying assembly 1 includes a top frame 11, a traveling mechanism 12, a U-shaped plate 13, a support rod 14, a profile plate 15 and a spraying mechanism 16, wherein the traveling mechanism 12 is installed at two sides of the top frame 11 and can horizontally move along the length direction of the top frame 11, the U-shaped plate 13 is installed on the traveling mechanism 12 and located below the top frame 11, and the profile plate 15 is connected below the U-shaped plate 13 through the support rod 14;

spraying mechanism 16 includes a plurality of spraying base 161 and connects rope 162, spraying base 161's bottom integrated into one piece has shower nozzle 163, and spraying base 161's top surface is equipped with and has internal screw thread spread groove 168, is used for dismantling in the spread groove 168 to connect the injecting glue pipe, and spraying base 161's both sides still integrated into one piece have L shaped plate 164 and form a spout 165 that link up, connect through connecting rope 162 between two adjacent spraying base 161, and a plurality of spraying base 161 equidistant ground sliding connection is on the profiling plate 15, the shape of profiling plate 15 cooperatees with the shape of profiled surface and is equipped with the rectangular hole 151 that sets up along its length direction on the profiling plate 15.

In this embodiment, a through threaded hole 166 is further provided on the horizontal section of the L-shaped plate 164 for installing a fastening screw 167, so as to position the spraying base 161 and the cam plate 15 and prevent them from moving during spraying.

In this embodiment, the traveling mechanism 12 includes two supporting members 121, two traveling wheels 122, two guide wheels 123, a servo motor 124, a driving gear 125 and a rack 126, the two supporting members 121 are respectively located on two sides of the top frame 11, two traveling wheels 122 symmetrically arranged are installed in each supporting member 121, the two traveling wheels 122 are connected to side bars on two sides of the top frame 11 in a rolling manner, the guide wheel 123 is further rotatably connected to one of the supporting members 121, the guide wheels 123 are connected to side faces of the side bars in a rolling manner and are perpendicular to the traveling wheels 122, a rack 126 arranged along the length direction of the top frame 11 is connected to a side face of the side bar on one side of the other supporting member 121, the driving gear 125 is engaged with the driving gear 125, the driving gear 125 is connected to an output end of the servo motor 124, and the servo.

In this embodiment, a stirring mechanism 7 is further installed on the barrel cover of the glue barrel 3, the stirring mechanism 7 and the drying mechanism 6 are both connected to a U-shaped plate 13 through a linkage mechanism 8 and powered by the U-shaped plate 13, the glue barrel 3 is placed on the bottom plate 5, the bottom plate 5 is installed on the top frame 11, and the glue injection pump 4 is also installed on the bottom plate 5 and connected to the inside of the glue barrel 3 through a pipeline;

the stirring mechanism 7 comprises a stirring shaft 71, stirring blades 72 and a driven bevel gear 73, the stirring shaft 71 is rotatably connected to the barrel cover 74, the stirring blades 72 are mounted at the lower part of the stirring shaft 71 and are positioned in the rubber barrel 73, and the upper end of the stirring shaft 71 is connected to the driven bevel gear 73;

the drying mechanism 6 comprises a fan 61, a drying cylinder 62, an electric heating net 63, a three-way pipe 64, an electromagnetic valve 65 and an exhaust plate 66, wherein the fan 61 is connected to the air inlet end of the drying cylinder 62 through a pipeline, the electric heating net 63 is installed in the drying cylinder 62, the air outlet end of the drying cylinder 62 is connected to the three-way pipe 64, two air outlet ends of the three-way pipe 64 are connected with the electromagnetic valve 65, the air outlet end of the electromagnetic valve 65 is connected to the air inlet at the upper end of the exhaust plate 66 through a hose (not shown in the figure), the exhaust plate 66 is provided with two air outlets which are symmetrically arranged at the front side and the rear side of the support rod 14, the exhaust plate 66 is connected with the support rod 14 through a connecting plate 67, the exhaust;

the linkage mechanism 8 comprises a power rack 81, a cylindrical gear 82, a main belt pulley 83, a first auxiliary belt pulley 84, a second auxiliary belt pulley 85 and a driving bevel gear 86, the power rack 81 is mounted on the U-shaped plate 13 through a base plate, the power rack 81 is meshed with the cylindrical gear 82, the cylindrical gear 82 is coaxially arranged with the main belt pulley 83 through a connecting shaft 87 and is rotatably connected onto a first support seat 88, the first support seat 88 is mounted on the bottom surface of the top frame 11, the main belt pulley 83 is connected onto the first auxiliary belt pulley 84 through a belt, the first auxiliary belt pulley 84 is connected onto the second auxiliary belt pulley 85 through a long shaft 89, the first auxiliary belt pulley 84 and the second auxiliary belt pulley 85 are symmetrically arranged, the long shaft 89 is rotatably connected onto a bearing in the second support seat 810, the second support seat 810 is mounted on the top frame 11, the driving bevel gear 86 is also mounted on the long shaft 89 and is meshed with the driven bevel gear 73, the second auxiliary belt, the fan 61 and the drying drum 62 are mounted on the bottom surface of the base plate 5 through a housing 811.

In this embodiment, the supporting member 121 includes a top plate 1211, a bottom plate 1212, and an upright plate 1213, the upright plate 1213 is connected between and fixes the top plate 1211 and the bottom plate 1212, a support 1215 for mounting the traveling wheel 122 is disposed on the bottom surface of the top plate 1211 and the top surface of the bottom plate 1212, mounting holes are further disposed on the top plate 1211 and the bottom plate 1212 on one side of the guide wheel 123, bearings 1214 are mounted in the mounting holes, and the guide wheel 123 is mounted in the upper and lower bearings 1214 through a shaft rod.

The working process and principle of the related components of the invention are as follows: firstly, according to the characteristics of the molding surface, the spraying mechanisms 16 connected into a string are arranged on the corresponding profile plates 15 in a penetrating way, and are connected into the threaded holes 166 on the spraying base 161 by means of fastening screws 167, the spraying mechanisms 16 positioned at the two ends are fixed, then the glue injection pipes are connected into the corresponding connecting grooves 168 one by one, and all the glue injection pipes are integrally positioned by one or more tank chains so as to ensure that no interference is generated to the spraying process, then the spraying mechanisms 16 are arranged at one end of the molding surface, the servo motor 124 is started, the glue injection pump 4 extracts the glue in the glue barrel 3 and is connected to the glue injection pipes through a plurality of hoses (not shown in the figure), the glue injection is started, the servo motor 124 drives the driving gear 125 to rotate, and is meshed with the rack 126, so that the whole walking mechanism 12 can horizontally move along the length direction of the rack 126, and the moving speed is controlled according to, after reaching the other end of the top frame 11, the servo motor 124 rotates reversely, the spraying mechanism 16 moves reversely, the second spraying is carried out, and the number of the spraying channels is set as required by reciprocating in this way.

In the spraying process, the power rack 81 on the U-shaped plate 13 drives the cylindrical gear 82 to rotate, and further drives the driving bevel gear 86 and the secondary belt pulley 85 to rotate, wherein the driving bevel gear 86 is meshed with the driven bevel gear 73 and drives the driven bevel gear to rotate, and further drives the stirring shaft 71 and the stirring blades 72 to rotate, so that the gel coat in the gel bucket 3 is stirred, the gel coat is difficult to precipitate, and the uniformity of the gel coat is ensured; the secondary belt pulley II 85 provides power for the fan 61, and airflow passes through the drying cylinder 62, is heated by the electric heating net 63, is discharged to the air exhaust plate 66, is finally discharged through the air exhaust hole 68, is blown to a molding surface, and is subjected to auxiliary drying; the two solenoid valves 65 are used for respectively controlling the air exhaust of the front air exhaust plate 66 and the rear air exhaust plate 66, so that when the flexible spraying assembly 1 moves in a single direction, the air exhaust plates 66 which are opposite in moving direction are in a working state.

After the spraying is finished, the travelling crane lifts the whole top frame 11 to carry out the next operation. Specifically, referring to fig. 14, the spraying mechanism 16 is located above the molding surface 2 of the molding die.

Above-mentioned flexible spraying subassembly 1 can be based on the shape characteristic of profiled surface, matches suitable profile plate 15, and is worn to locate on this profile plate 15 with flexible spraying mechanism 16 equidistant setting again to guarantee the homogeneity of spraying, simultaneously, utilize running gear 12 can realize the automation of spraying, show to improve spraying efficiency. Meanwhile, when the flexible spraying component 1 moves, the stirring mechanism 7 and the drying mechanism 6 can synchronously run by means of the linkage mechanism 8, so that the spraying of gel coats is better realized, and the spraying quality is improved. As shown in FIG. 15, there is another configuration of profile plate 15.

It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the invention are intended to be embraced therein.

Claims

1. A manufacturing method of a large-scale wind driven generator cabin cover is characterized by comprising the following steps:

(2) gel coat spraying, namely placing the forming surface of a forming mold upwards, descending a flexible spraying assembly (1) to the position right above the forming mold by using a travelling crane, starting a gel injection pump (4), pumping out the gel coat in a gel barrel (3) by using the gel injection pump (4), injecting the gel coat into a gel injection pipe in the flexible spraying assembly (1) by using a plurality of hoses, uniformly spraying the gel coat on the forming surface through the flexible spraying assembly (1), simultaneously, carrying out primary drying treatment on the sprayed forming surface by using a drying mechanism (6) on the flexible spraying assembly (1), and manually coating the part which is not coated on the forming surface after the gel coat is solidified so as to ensure comprehensive spraying;

(9) and (6) packaging and warehousing.

2. The method for manufacturing a nacelle cover for a large wind turbine according to claim 1, wherein: and (3) before the step (2), a release agent is sprayed on a forming surface, the thickness of the gel coat is 0.2-0.3mm, and the composite felt contains a balsawood sandwich material with the mass percent of 5-10%.

3. The method for manufacturing a nacelle cover for a large wind turbine according to claim 1, wherein: the flexible spraying assembly (1) comprises a top frame (11), a travelling mechanism (12), a U-shaped plate (13), a supporting rod (14), a profiling plate (15) and a spraying mechanism (16), wherein the travelling mechanism (12) is installed on two sides of the top frame (11) and can horizontally move along the length direction of the top frame (11), the U-shaped plate (13) is installed on the travelling mechanism (12) and is located below the top frame (11), and the profiling plate (15) is connected below the U-shaped plate (13) through the supporting rod (14);

spraying mechanism (16) include a plurality of spraying base (161) and connect rope (162), the bottom integrated into one piece of spraying base (161) has shower nozzle (163), the top surface of spraying base (161) is equipped with and has internal screw thread connecting groove (168), be used for dismantling in connecting groove (168) and connect the injecting glue pipe, the both sides of spraying base (161) still integrated into one piece have L shaped plate (164) and form a spout (165) that link up, connect through connecting rope (162) between two adjacent spraying base (161), equidistant ground sliding connection is on profile plate (15) in a plurality of spraying base (161), the shape of profile plate (15) cooperatees with the shape of profiled surface and is equipped with rectangular hole (151) that set up along its length direction on profile plate (15).

4. A method of manufacturing a large scale wind turbine nacelle cover according to claim 3, wherein: and a through threaded hole (166) is also formed in the horizontal section of the L-shaped plate (164).

5. A method of manufacturing a large scale wind turbine nacelle cover according to claim 3, wherein: the walking mechanism (12) comprises support pieces (121), walking wheels (122), guide wheels (123), a servo motor (124), a driving gear (125) and a rack (126), the support pieces (121) are two and are respectively positioned on two sides of the top frame (11), the two walking wheels (122) which are symmetrically arranged are arranged in each support piece (121), the two walking wheels (122) are connected to side rods on two sides of the top frame (11) in a rolling manner, one of the support pieces (121) is further connected with the guide wheels (123) in a rotating manner, the guide wheels (123) are connected to the side surfaces of the side rods in a rolling manner and are perpendicular to the walking wheels (122), the side surface of the side rod positioned on one side of the other support piece (121) is connected with the rack (126) arranged along the length direction of the top frame (11), the rack (126) is meshed with the driving gear (125), and the driving gear (125) is, the servo motor (124) is mounted on the top surface of the support member (121).

6. A method of manufacturing a large scale wind turbine nacelle cover according to claim 3, wherein: the glue bucket is characterized in that a stirring mechanism (7) is further mounted on a bucket cover of the glue bucket (3), the stirring mechanism (7) and the drying mechanism (6) are both connected to a U-shaped plate (13) through a linkage mechanism (8) and powered by the U-shaped plate (13), the glue bucket (3) is placed on a bottom plate (5), the bottom plate (5) is mounted on an upper frame (11), and a glue injection pump (4) is also mounted on the bottom plate (5) and connected to the inside of the glue bucket (3) through a pipeline;

the stirring mechanism (7) comprises a stirring shaft (71), stirring blades (72) and a driven bevel gear (73), the stirring shaft (71) is rotatably connected to the barrel cover (74), the stirring blades (72) are installed at the lower part of the stirring shaft (71) and are positioned in the rubber barrel (73), and the upper end of the stirring shaft (71) is connected to the driven bevel gear (73);

the drying mechanism (6) comprises a fan (61), a drying cylinder (62), an electric heating net (63), a three-way pipe (64), an electromagnetic valve (65) and an exhaust plate (66), wherein the fan (61) is connected to the air inlet end of the drying cylinder (62) through a pipeline (), the electric heating net (63) is installed in the drying cylinder (62), the air outlet end of the drying cylinder (62) is connected to the three-way pipe (64), the two air outlet ends of the three-way pipe (64) are connected with the electromagnetic valve (65), the air outlet end of the electromagnetic valve (65) is connected to an air inlet at the upper end of the exhaust plate (66) through a hose, the exhaust plate (66) is provided with two air outlets which are symmetrically arranged at the front side and the rear side of the supporting rod (14), the exhaust plate (66) is connected with the supporting rod (14) through a connecting plate (67), the exhaust plate (66) is of a hollow;

the linkage mechanism (8) comprises a power rack (81), a cylindrical gear (82), a main belt pulley (83), a first auxiliary belt pulley (84), a second auxiliary belt pulley (85) and a driving bevel gear (86), the power rack (81) is installed on the U-shaped plate (13) through a base plate, the power rack (81) is meshed with the cylindrical gear (82), the cylindrical gear (82) is coaxially arranged with the main belt pulley (83) through a connecting shaft (87) and is rotationally connected onto a first support seat (88), the first support seat (88) is installed on the bottom surface of the top frame (11), the main belt pulley (83) is connected onto the first auxiliary belt pulley (84) through a belt, the first auxiliary belt pulley (84) is connected onto the second auxiliary belt pulley (85) through a long shaft (89), the first auxiliary belt pulley (84) and the second auxiliary belt pulley (85) are symmetrically arranged, the long shaft (89) is rotationally connected onto a bearing in the second support seat (810), and the second support seat (810) is installed on the top frame (11), the driving bevel gear (86) is also arranged on the long shaft (89) and meshed with the driven bevel gear (73), the secondary belt pulley II (85) is connected to the power input end of the fan (61) through a belt, and the fan (61) and the drying cylinder (62) are both arranged on the bottom surface of the bottom plate (5) through the base (811).

7. The method for manufacturing a nacelle cover for a large wind turbine according to claim 5, wherein: the supporting piece (121) comprises a top plate (1211), a bottom plate (1212) and a vertical plate (1213), the vertical plate (1213) is connected between the top plate (1211) and the bottom plate (1212) and fixes the top plate and the bottom plate, and a support (1215) for mounting the travelling wheel (122) is arranged on the bottom surface of the top plate (1211) and the top surface of the bottom plate (1212).

8. The method for manufacturing a nacelle cover for a large wind turbine according to claim 7, wherein: the top plate (1211) and the bottom plate (1212) which are positioned on one side of the guide wheel (123) are also provided with mounting holes, bearings (1214) are mounted in the mounting holes, and the guide wheel (123) is mounted in the upper bearing (1214) and the lower bearing (1214) through a shaft rod.