An assembly tooling and its assembly method for a hub fairing of a wind turbine generator

Abstract

The present invention discloses an assembly tooling and an assembly method for a hub fairing of a wind turbine generator set, including: an intermediate support platform, side supports and positioning pins; the main frame of the intermediate support platform is in a regular triangular prism structure, and three side edges extend downward to form three legs; there are upper and lower pedal platforms inside the frame; there is a circular ring platform at the top of the frame; there is an up-and-down tread bar connecting the two pedal platforms in the middle of the frame; the side supports are three and are respectively installed on the three legs of the intermediate support platform; the positioning pins are installed on the circular ring platform of the intermediate support platform and are tightened with bolts. By using this tooling, the fairing is positioned and its precision is adjusted, so that the fairing can meet the assembly and use requirements.

Description

Technical Field

[0001] The present invention relates to the technical field of the assembly of the hub fairing of a wind turbine generator, and in particular to an assembly tooling for the hub fairing of a wind turbine generator and an assembly method thereof. Background Art

[0002] It is understood that in the prior art, a closed fairing is adopted for the hub fairing of a doubly-fed wind turbine generator, and an open structure is adopted for the hub fairing of a semi-direct drive wind turbine generator. Due to the different structural forms, the assembly of the closed fairing and the open fairing is different. The assembly of the closed fairing hoists the fairing body respectively with the hub and the front support of the hub as the benchmarks. Since the body is closed, the accuracy is relatively easy to control.

[0003] For the open fairing, the structure of its body is in the shape of an umbrella without an umbrella handle. According to transportation requirements and the like, the body is divided into 3 pieces. During assembly, it is necessary to assemble and connect the 3 pieces of the body structure together. Since the outer edges of each piece of the body are in a free state, it is difficult to control the accuracy. Summary of the Invention

[0004] The first object of the present invention is to overcome the deficiencies of the prior art. For the assembly of the open fairing, an assembly tooling for the hub fairing of a wind turbine generator is provided. By using this tooling to position and adjust the accuracy of the fairing, the fairing can meet the assembly and use requirements.

[0005] The second object of the present invention is to provide an assembly method for the assembly tooling of the hub fairing of a wind turbine generator.

[0006] The first object of the present invention is achieved by the following technical solutions: An assembly tooling for the hub fairing of a wind turbine generator includes: an intermediate support platform, side supports, and positioning pins;

[0007] The main frame of the intermediate support platform is in the structure of a regular triangular prism. Three side edges of the regular triangular prism structure extend downward to form three legs; there are upper and lower pedal platforms inside the frame to adapt to the assembly operations of fairing bodies at different heights; there is a circular platform at the top of the frame for supporting the hub platform at the front end of the hub to meet the assembly and positioning of the fairing body; there is an up-and-down tread bar connecting the two pedal platforms in the middle of the frame for operators to enter the inside of the fairing from the up-and-down tread bar for operation;

[0008] There are three side supports respectively installed on the three legs of the intermediate support platform, that is, one leg is paired with one side support, which is used to adjust the lower end wing of the opening of the body installed on the hub platform, so that the connection between the bodies is smooth and round, that is, the effective adjustment of the installation accuracy of the body is realized;

[0009] The positioning pin is installed on the circular platform of the intermediate support platform and tightened with bolts, and is used to position and fix the hub platform hoisted onto the circular platform.

[0010] Further, the side support includes an adjustable strut, a screw rod, a rubber pad, a nut and a washer; the adjustable strut is of a right-angled triangle structure, and its short straight side is fixedly connected to the corresponding leg of the intermediate support platform by a lug and a bolt. At both sides of the end of its long straight side, screw rods with adjustable telescoping are respectively installed and locked with matching nuts and washers. By adjusting the telescoping of the screw rods, the lower wing of the opening of the cover body can be adjusted; a rubber pad is pasted at the end of the screw rod to avoid scratching the cover body when adjusting the installation accuracy of the cover body.

[0011] Further, the intermediate support platform is integrally welded by profiles and steel plates.

[0012] Further, the fairing is an open fairing and is assembled by three cover bodies.

[0013] The second object of the present invention is achieved by the following technical solutions: An assembly method for an assembly tool for a hub fairing of a wind turbine generator. First, the hub platform is supported and positioned by the circular platform of the intermediate support platform, and then three cover bodies are gradually installed. By adjusting the telescoping of the screw rods of the side support, the lower wing of the opening of each cover body is adjusted in place. Finally, drilling and assembly of the cover body are completed. The specific implementation steps are as follows:

[0014] 1) Complete the connection and installation of the intermediate support platform, side support and positioning pin;

[0015] 2) Hoist the hub platform onto the circular platform and position and fix it with the positioning pin;

[0016] 3) Lift and install the first cover body on the hub platform, and similarly hoist and install the second and third cover bodies step by step;

[0017] 4) Rotate the screw rods of the side support to adjust the lower wing of the opening of each cover body, so that the transition between the connections of each cover body is smooth and even. After the connections of each cover body are completed, the installation of the fairing is completed.

[0018] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0019] This tooling has a simple and reliable structure and strong practicability. According to on-site feedback, the assembly efficiency using this tooling is increased by more than 50% compared with the efficiency without this tooling before, and the problems of difficult positioning and accuracy control of the open fairing are solved. Description of the Drawings

[0020] Figure 1 It is a structural schematic diagram of an assembly tool for a hub fairing.

[0021] Figure 2 It is a schematic structural diagram of the middle support platform.

[0022] Figure 3 It is a schematic structural diagram of the side support.

[0023] Figure 4 It is an assembly schematic diagram of the first cover body.

[0024] Figure 5 It is an assembly schematic diagram of the second cover body.

[0025] Figure 6 It is an assembly schematic diagram of the third cover body.

[0026] Figure 7 It is a schematic structural diagram of the three cover bodies installed. Specific implementation mode

[0027] The present invention will be further described in detail below in conjunction with the embodiments and the accompanying drawings, but the implementation modes of the present invention are not limited thereto.

[0028] As Figure 1 and Figure 2 shown, this embodiment provides an assembly tooling for the hub fairing of a wind turbine generator set, including: a middle support platform 1, a side support 2 and a positioning pin 3;

[0029] The middle support platform 1 is integrally welded by profiles and steel plates, and its main frame is a regular triangular prism structure. Three side edges of the regular triangular prism structure extend downward to form three legs 11; there are upper and lower pedal platforms 12, 13 inside the frame to adapt to the assembly operations of the fairing with different heights; there is a circular platform 14 at the top of the frame for supporting the hub platform 4 (see Figure 4 shown) at the front end of the hub to meet the assembly and positioning of the fairing; there is an up-and-down tread bar 15 connecting the two pedal platforms 12, 13 in the middle of the frame for the operator to enter the inside of the fairing from the up-and-down tread bar 15 for operation;

[0030] The three side supports 2 are respectively installed on the three legs 11 of the middle support platform 1, that is, one leg 11 is paired with one side support 2, which is used to adjust the lower end wing of the opening of the cover body installed on the hub platform, so that the connection between the cover bodies is smooth and round, that is, effectively adjust the installation accuracy of the cover body;

[0031] The positioning pin 3 is installed on the circular platform 14 of the middle support platform 1 and tightened with bolts, which is used to position and fix the hub platform 4 hoisted onto the circular platform 14.

[0032] As Figure 3As shown, the side support 2 includes an adjustable strut 21, a screw 22, a rubber pad (not shown in the figure), a nut 23, and a washer 24; the adjustable strut 21 has a right triangle structure, and its short straight side is fixedly connected to the corresponding leg 11 of the middle support platform 1 by a lug 25 and a bolt (not shown in the figure), which is convenient for on-site operation and installation. At both ends of the long straight side, adjustable telescopic screws 22 are respectively installed and locked with matching nuts 23 and washers 24. By adjusting the telescopic length of the screws 22, the lower wing of the opening of the cover body can be adjusted; a rubber pad is pasted at the end of the screw 22 to avoid scratching the cover body when adjusting the installation accuracy of the cover body.

[0033] The above-mentioned hub fairing assembly tooling in this embodiment is mainly for the assembly of an open fairing (assembled by three cover bodies). Its assembly operation mainly uses the circular platform 14 of the middle support platform 1 to support and position the hub platform, and then gradually installs the three cover bodies 5, 6, and 7. And by adjusting the telescopic length of the screw 22 of the side support 2, the lower wing of the opening of each cover body is adjusted in place. Finally, the drilling and assembly of the cover body are completed, as Figures 4 - 6 shown. The specific implementation steps are as follows:

[0034] 1) Complete the connection and installation of the middle support platform 1, side support 2, positioning pin 3, etc.;

[0035] 2) Lift and place the hub platform 4 onto the circular platform 14 and fix it with the positioning pin 3;

[0036] 3) Lift and install the first cover body 5 on the hub platform 4, and similarly lift and install the second and third cover bodies 6 and 7 step by step;

[0037] 4) Rotate the screw 22 of the side support 2 to adjust the lower wing of the opening of each cover body, so that the transition between the connections of each cover body is smooth and round. After the connection of each cover body is completed, the fairing installation is completed, as Figure 7 shown.

[0038] The above embodiments are the preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention shall be equivalent replacement methods and are all included in the protection scope of the present invention.

Claims

1. An assembly tooling for the hub fairing of a wind turbine generator set, characterized in that: Including: An intermediate support platform, side supports and positioning pins; The main frame of the intermediate support platform is a regular triangular prism structure. Three side edges of the regular triangular prism structure extend downward to form three legs; there are upper and lower pedal platforms inside the frame to adapt to the assembly operations of fairing bodies of different heights; there is a circular platform at the top of the frame, which is used to support the hub platform at the front end of the hub to meet the assembly and positioning of the fairing body; there is an up-and-down tread bar connecting the two pedal platforms in the middle of the frame, which is used for operators to enter the inside of the fairing through the up-and-down tread bar for operations; There are three side supports respectively installed on the three legs of the intermediate support platform, that is, one leg is paired with one side support, which is used to adjust the lower end wing of the opening of the body installed on the hub platform, so that the connection between the bodies is smooth and transitional, that is, effectively adjust the installation accuracy of the body; The positioning pin is installed on the circular platform of the intermediate support platform and tightened with bolts, which is used to position and fix the hub platform lifted onto the circular platform; The side support includes an adjustable strut, a screw rod, a rubber pad, a nut and a washer; the adjustable strut is a right triangle structure, and its short straight side is fixedly connected to the corresponding leg of the intermediate support platform by a lug and a bolt. The two sides of the end of its long straight side are respectively installed with adjustable telescopic screw rods, which are locked with matching nuts and washers. By adjusting the telescopic screw rods, the lower end wing of the opening of the body can be adjusted; a rubber pad is pasted at the end of the screw rod, which is used to avoid scratching the body when adjusting the installation accuracy of the body; The fairing is an open fairing, which is assembled by three fairing bodies.

2. The assembly tooling for the hub fairing of a wind turbine generator set according to claim 1, characterized in that: The intermediate support platform is integrally welded by profiles and steel plates.

3. An assembly method for the assembly tooling of the hub fairing of the wind turbine generator set according to claim 1 or 2, characterized in that: First, use the circular platform of the intermediate support platform to support and position the hub platform, then gradually install the three fairing bodies, and adjust the lower end wing of the opening of each fairing body by adjusting the telescopic screw rod of the side support until it is in place. Finally, complete the drilling and assembly of the fairing body. The specific implementation steps are as follows: 1) Connect and install the intermediate support platform, side supports and positioning pins; 2) Lift the hub platform onto the circular platform and position and fix it with the positioning pin; 3) Lift and install the first fairing body on the hub platform, and similarly lift and install the second and third fairing bodies step by step; 4) Rotate the screw rod of the side support to adjust the lower end wing of the opening of each fairing body, so that the connection between each fairing body is smooth and transitional. After the connection of each fairing body is completed, the installation of the fairing is completed.

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