A method for positioning embedded parts for large megawatt wind turbine nacelle cover panels

Abstract

The present invention relates to a method for positioning embedded parts for a large-megawatt wind turbine nacelle cover sheet, comprising a positioning tool body, wherein the positioning tool body comprises a plurality of legs, and the ends of the legs are provided with positioning plates connected and fixed thereto, and the positioning plate is provided with a plurality of positioning holes; and a positioning pin, wherein the middle portion of the positioning pin passes through a nacelle cover sheet mold, one end of the positioning pin is located in the positioning hole, and the other end of the positioning pin is provided with a positioning block connected thereto; the present invention has a reasonable structural design, and by providing a tool with an integrated structure, the positioning accuracy and positioning speed of the embedded parts are improved, the installation risk during installation is reduced, and the connection effect of the grouped components and the nacelle cover is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of wind turbine nacelles, and in particular to a method for positioning embedded parts for large-megawatt wind turbine nacelle cover sheets. Background Art

[0002] The nacelle cover is an important component of a wind turbine. It covers all the components in the nacelle and isolates them from the outside to protect them. Usually, the nacelle cover is made of a fiberglass mold, and then vacuum-formed with glass fiber on the mold.

[0003] At present, with the development of the national economy, the demand for electric energy continues to grow. The country continues to develop and manufacture large-megawatt wind turbines, and install cooling systems, maintenance installation platforms, hovering platforms and other components on the nacelle cover. Therefore, it is necessary to pre-embed metal parts and connect them with the required installation parts during the production of the nacelle cover. The installation parts are all grouped parts and need to be installed in groups. The installation accuracy requirements are high. The previous metal embedded parts positioning method is no longer suitable for the existing large-megawatt wind turbine nacelle cover embedded parts positioning. Summary of the invention

[0004] In order to solve the deficiencies in the prior art, the object of the present invention is to provide a method for positioning embedded parts of a large-megawatt wind turbine nacelle cover sheet, so as to improve the installation accuracy of the embedded parts of the nacelle cover sheet.

[0005] The technical solution adopted by the present invention to solve its technical problem is:

[0006] A method for positioning embedded parts of a large megawatt wind turbine nacelle cover, characterized by comprising:

[0007] A positioning tool body, wherein the positioning tool body comprises a plurality of legs, and the ends of the legs are provided with positioning plates connected and fixed thereto, and the positioning plate is provided with a plurality of positioning holes; and

[0008] A positioning pin, wherein the middle portion of the positioning pin passes through the cabin cover sheet mold, one end of the positioning pin is located in the positioning hole, and the other end of the positioning pin is provided with a positioning block connected thereto.

[0009] The material of the positioning pin is plastic or wood.

[0010] The positioning pin is threadedly connected to the positioning block.

[0011] The inner wall of the cabin cover sheet mold is also provided with a positioning groove that matches the shape of the positioning plate and is arranged one-to-one, and the positioning plate is located inside the positioning groove and is in contact with and connected to the inner wall of the cabin cover sheet mold.

[0012] A protective layer is also provided outside the positioning block, and the protective layer is wrapped around the outside of the positioning block, and the protective layer is respectively connected to the positioning block and the outer wall of the cabin cover sheet mold.

[0013] The protective layer is made of fiber-reinforced composite material.

[0014] A method for positioning embedded parts of a large megawatt wind turbine nacelle cover, characterized by comprising:

[0015] Making the positioning tool body: setting the positioning plates with matching shapes and corresponding one to one according to the installation positions of the embedded parts of the cabin cover sheet mold, and connecting part or all of the positioning plates into a whole through the positioning tool body;

[0016] Processing positioning holes: positioning and processing the positioning holes of each positioning plate on the positioning tool body;

[0017] Installing the positioning pins: placing the positioning tool body on the inner wall of the cabin cover sheet mold, and then drilling holes on the cabin cover sheet mold according to the positions of the positioning holes and installing the positioning pins;

[0018] Install embedded parts: remove the positioning tool body, install the embedded parts and complete the positioning through the positioning pins.

[0019] The specific installation method of the positioning pin includes:

[0020] Insert the locating pin into the locating hole of the cabin cover sheet mold, and at the same time connect the locating pin to the outside of the cabin cover sheet mold through a locating block, and keep the position between the locating block and the locating pin and the cabin cover sheet mold fixed, then lay fiberglass cloth on the outer surface of the locating block and apply resin, and after the resin is cured and formed, connect and fix the locating pin to the cabin cover sheet mold.

[0021] The beneficial effects of the present invention are as follows: the structural design is reasonable, and by setting a tooling with an integrated structure, the positioning accuracy and positioning speed of the embedded parts are improved, the installation risk during installation is reduced, and the connection effect between the grouped components and the nacelle cover is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0023] Figure 1 It is a schematic diagram of the main structure of the present invention.

[0024] Figure 2 It is a schematic diagram of the axonometric structure of the present invention.

[0025] Figure 3 It is a schematic diagram of the inner wall structure of the cabin cover plate mold.

[0026] Figure 4It is a schematic diagram of the partial cross-sectional structure of the positioning tooling and the cabin cover body mold.

[0027] Figure 5 for Figure 4 Schematic diagram of the partial structure of "A".

[0028] Figure 6 It is a schematic diagram of the partial cross-sectional structure of the embedded parts and the cabin cover body mold.

[0029] Figure 7 for Figure 6 Schematic diagram of the partial structure of "B".

[0030] In the figure: 100 cabin cover body mold, 101 positioning groove, 200 positioning tool body, 201 support foot, 202 positioning plate, 300 positioning pin, 301 positioning block, 302 protective layer, 400 embedded part, 401 installation hole. DETAILED DESCRIPTION

[0031] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0032] according to Figures 1 to 7 As shown: This embodiment provides a method for positioning embedded parts for a large-megawatt wind turbine nacelle cover sheet, including a nacelle cover sheet mold 100, a positioning tool body 200 and a positioning pin 300. The positioning tool body 200 is pre-processed and manufactured. After the positioning tool body 200 and the nacelle cover sheet mold 100 are positioned and assembled, the positioning pin 300 is installed on the nacelle cover sheet mold 100. The positioning pin 300 is used for positioning the embedded parts 400. The specific implementation structure of each component is described as follows.

[0033] The cabin cover sheet mold 100 is made according to the shape of the outer wall of the cabin cover sheet. The cabin cover sheet mold 100 is made of fiberglass. When the cabin cover sheet is produced, glass fiber is laid on the inner wall of the cabin cover sheet mold 100 and resin is injected through a vacuum introduction process.

[0034] Furthermore, a positioning groove 101 matching the shape of the positioning plate 202 and corresponding to each other is provided on the inner wall of the cabin cover piece mold 100. When the cabin cover piece mold 100 is assembled with the positioning tool body 200, the positioning plate 202 of the positioning tool body 200 can be fuzzily positioned through the positioning groove 101 to improve the positioning efficiency, and then the precise positioning is completed according to the design requirements; when the cabin cover piece mold 100 is assembled with the embedded part 400, the positioning groove 101 is used to fuzzily position the embedded part 400, and then the embedded part 400 is precisely positioned through the positioning pin 300.

[0035] The positioning fixture body 200 is made of welded metal profiles as a whole, and its overall shape matches the inner wall of the cabin cover sheet mold 100, so as to achieve the purpose of follow-up assembly with the cabin cover sheet mold 100. One side of the positioning fixture body 200 is provided with a plurality of supporting legs 201 connected thereto, and the ends of the supporting legs 201 are provided with positioning plates 202 connected and fixed thereto, and the positioning plates 202 are provided with a plurality of positioning holes, and the positioning plates 202 are used for positioning the embedded parts 400, so the number of the positioning plates 202 is consistent with the number of the embedded parts 400, the setting position of the positioning plates 202 is consistent with the position of the embedded parts 400, and the position of the positioning holes is consistent with the position of the mounting holes 401 of the embedded parts 400;

[0036] When the cabin cover sheet mold 100 is assembled with the positioning tool body 200, since the overall direction of the positioning plate 202 is arranged in accordance with the inner wall of the cabin cover sheet mold 100, the positioning plate 202 is located inside the positioning groove 101 of the cabin cover sheet mold 100 and is closely contacted and connected with the inner wall of the cabin cover sheet mold 100, imitating the assembly effect of the embedded part 400 and the cabin cover sheet mold 100, thereby achieving a more accurate positioning effect;

[0037] Of course, in the above structure, when the cabin cover sheet mold 100 is large in size or complex in structure, multiple sets of positioning tool bodies 200 corresponding to the same group of cabin cover sheet molds 100 can be provided, and the positioning requirements of the embedded parts 400 on the cabin cover sheet mold 100 can be correspondingly shared to each set of positioning tool bodies 200. The allocation of positioning plates 202 for each set of positioning tool bodies 200 should be determined according to the number of embedded parts 400 and the shape of the cabin cover sheet mold 100.

[0038] The middle part of the positioning pin 300 passes through the cabin cover sheet mold 100, one end of the positioning pin 300 is located in the positioning hole, and the other end of the positioning pin 300 is provided with a positioning block 301 connected thereto, and the positioning pin 300 is threadedly connected to the positioning block 301, so that the positioning pin 300 can be easily disassembled and replaced, and at the same time, the positioning block 301 is in contact with the outer wall of the cabin cover sheet mold 100, so that the positioning pin 300 is completely inserted into the cabin cover sheet mold 100 and the positioning hole;

[0039] In the above structure, the material of the positioning pin 300 is plastic, and nylon material can be used, so that the hardness of the positioning pin 300 itself is lower than that of iron or steel, and the surface of the cabin cover sheet mold 100 will not be damaged due to contact with the surface of the cabin cover sheet mold 100, and the surface of the cabin cover sheet mold 100 is protected. At the same time, when contacting and positioning with the embedded part 400, the internal thread of the mounting hole 401 of the embedded part 400 will not be damaged;

[0040] Furthermore, a protective layer 302 is provided outside the positioning block 301, and the protective layer 302 is made of fiber-reinforced composite material.

[0041] The protective layer 302 is wrapped around the outer side of the positioning block 301, and the protective layer 302 is respectively connected to the positioning block 301 and the outer wall of the cabin cover sheet mold 100; through the setting of the protective layer 302, on the one hand, the positions of the positioning block 301 and the positioning pin 300 can be fixed by its curing effect, so as to ensure the accuracy of the positioning effect of the positioning pin 300 on the embedded part 400; on the other hand, the position of the cabin cover sheet mold 100 through which the positioning pin 300 passes can be sealed, and during the vacuum introduction process of the cabin cover sheet, this part will not leak or release pressure.

[0042] Based on the above structure, a positioning tool for the embedded component 400 used for the large-megawatt wind turbine nacelle cover plate body is described below with respect to a specific implementation method thereof.

[0043] A method for positioning embedded parts for a large megawatt wind turbine nacelle cover sheet, comprising:

[0044] Manufacturing the positioning tool body 200: According to the installation position of the embedded part 400 of the cabin cover sheet mold 100, the positioning plates 202 with matching shapes and corresponding to each other are arranged. The positioning plates 202 are connected as a whole through a positioning tool body 200 with a rectangular structure. The relative positions of the positioning plates 202 are fixed and will not move. In order to achieve the assembly effect of the positioning plates 202 and the inner wall of the cabin cover sheet mold 100, the length of the positioning tool body 200 is long or short, which is used to keep the positioning plates 202 falling into the positioning groove 101.

[0045] Processing positioning holes: positioning the positioning holes of each positioning plate 202 on the positioning tool body 200 and processing the holes. The positioning of the positioning holes includes comprehensive positioning according to the design requirements of the cabin cover sheet. Generally, after determining the position of a certain base point, the specific coordinates of each positioning hole are determined, and the punching operation is completed by a CNC machining center. The punching position is accurate, and the relative position of each positioning hole satisfies the synchronous installation and fixation of the group components and multiple points of the cabin cover, avoiding the single positioning hole of a single positioning plate 202 being fixed alone, and multiple positioning plates 202 cannot cooperate well, so that the group components cannot be assembled;

[0046] Installing the positioning pin 300: placing the positioning tool body 200 on the inner wall of the cabin cover sheet mold 100, and then drilling holes on the cabin cover sheet mold 100 according to the position of the positioning holes and installing the positioning pin 300. The drilling process uses a magnetic drill to drill vertical holes on the cabin cover sheet mold 100, with high drilling accuracy and good effect. The specific installation method of the positioning pin 300 includes:

[0047] Insert the positioning pin 300 into the positioning hole of the cabin cover sheet mold 100, and at the same time, a positioning block 301 is threadedly connected to the positioning pin 300 on the outside of the cabin cover sheet mold 100, and the position between the positioning block 301, the positioning pin 300 and the cabin cover sheet mold 100 is kept fixed, and then fiberglass cloth is laid on the outer surface of the positioning block 301 and resin is applied, and after the resin is cured and formed, the positioning pin 300 is connected and fixed to the cabin cover sheet mold 100;

[0048] Install the embedded part 400: remove the positioning tool body 200, preliminarily position the embedded part 400 according to the installation groove, and then complete the positioning through the positioning pin 300 during the placement process of the embedded part 400, so that the positioning pin 300 is inserted into the installation hole 401 of the embedded part 400. At this time, the embedded part 400 is installed and positioned and will not move. The cabin cover piece mold 100 can be used to carry out the production operation of the cabin cover piece.

[0049] The above descriptions are only preferred implementation modes of the present invention. As long as the technical solutions for the purposes of the present invention are achieved by substantially the same means, they are within the protection scope of the present invention.

Claims

1. A method for positioning embedded parts of a large megawatt wind turbine nacelle cover, characterized in that: include: A positioning tool body, wherein the positioning tool body comprises a plurality of legs, and a positioning plate connected and fixed to the legs is provided at the end thereof, and a plurality of positioning holes is provided on the positioning plate; and a positioning pin, wherein the middle portion of the positioning pin passes through the cabin cover sheet mold, one end of the positioning pin is located in the positioning hole, and the other end of the positioning pin is provided with a positioning block connected thereto, The positioning steps include: Making the positioning tool body: setting the positioning plates with matching shapes and corresponding one to one according to the installation positions of the embedded parts of the cabin cover sheet mold, and connecting part or all of the positioning plates into a whole through the positioning tool body; Processing positioning holes: positioning and processing the positioning holes of each positioning plate on the positioning tool body; Install the positioning pins: place the positioning tool body on the inner wall of the cabin cover sheet mold, then drill holes on the cabin cover sheet mold according to the positions of the positioning holes and install the positioning pins; insert the positioning pins into the holes of the cabin cover sheet mold, and at the same time connect the positioning pins with a positioning block on the outside of the cabin cover sheet mold, and keep the positions of the positioning block, the positioning pins and the cabin cover sheet mold fixed, then lay glass fiber cloth on the outer surface of the positioning block and apply resin, and connect and fix the positioning pins with the cabin cover sheet mold after the resin is cured; Install embedded parts: remove the positioning tool body, install the embedded parts and complete the positioning through the positioning pins.

2. The method for positioning embedded parts for large megawatt wind turbine nacelle cover panels according to claim 1, characterized in that: The material of the positioning pin is plastic or wood.

3. The method for positioning embedded parts for large megawatt wind turbine nacelle cover panels according to claim 1, characterized in that: The positioning pin is threadedly connected to the positioning block.

4. The method for positioning embedded parts for large megawatt wind turbine nacelle cover panels according to claim 1, characterized in that: The inner wall of the cabin cover sheet mold is also provided with a positioning groove that matches the shape of the positioning plate and is arranged one-to-one, and the positioning plate is located inside the positioning groove and is in contact with and connected to the inner wall of the cabin cover sheet mold.

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