Web and root positioning device and method for a wind turbine blade

Abstract

The present invention provides a web and root positioning device for a wind turbine blade, which relates to the field of blade manufacturing and includes a bracket fixing frame, a positioning frame, and a web placing device. The positioning frame is fixedly connected to both sides of the bracket fixing frame for fixing the blade, and a plurality of web placing devices are fixedly connected inside the bracket fixing frame for placing the web on the blade surface. By the size and method of web positioning, the position size after web bonding is ensured, and the stability of the web gap is improved.

Description

Technical Field

[0001] The present invention relates to a production device for wind turbine blades, and particularly to a positioning device for the web and root of wind turbine blades. Background Art

[0002] During the manufacturing process of wind turbine blades, the blade web needs to be fixed on the blade, and the control of the bonding gap has an increasing impact on the blade quality and cost control. The existing glue spreading method requires manual placement, resulting in a large gap. Moreover, to ensure firm adhesion, a large amount of glue spreading leads to uneven thickness. Even when using a mechanical device for hanging, its utilization rate is not high, and different blades require different mechanical devices, resulting in very high usage costs. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art and provide a positioning device for the web and root of wind turbine blades, which is convenient to operate and has high stability.

[0004] The present invention is realized by the following technical solutions:

[0005] It includes a bracket fixing frame, a positioning frame, and a web placing device. The positioning frame is fixedly connected to both sides of the bracket fixing frame for fixing the blade, and a plurality of web placing devices are fixedly connected inside the bracket fixing frame for placing the web on the blade surface.

[0006] The bracket fixing frame includes a plurality of longitudinal frames, vertical frames, and cross frames. The longitudinal frames, vertical frames, and cross frames are all square steels, and the square steels are connected to form voids, which is convenient for the overhead crane to lift. The legs are connected to the lower ends of the longitudinal frames and vertical frames to play a supporting role. The ground wheels below the legs facilitate movement.

[0007] There are a plurality of positioning frames. Each positioning frame is fixed on the upper longitudinal frame and the lower longitudinal frame through a blade root positioning plate bracket. A second hydraulic cylinder is fixedly connected to the upper part of the blade root positioning plate bracket through a pulley. The end of the positioning plate connecting rod of the second hydraulic cylinder is connected to the blade root positioning plate. The height of the blade root positioning plate is adjusted by the second hydraulic cylinder. At the same time, the blade root positioning plate can move horizontally through the pulley to adjust the width of the blade root positioning plate to fix different blade roots, so as to adapt to different-shaped blades. The plurality of positioning frames are intermittently fixed along the longitudinal frame.

[0008] The web placing devices are arranged in pairs, and each pair of web placing devices is symmetrically arranged to hang a group of webs. The web placing device monomer includes a first hydraulic cylinder, a telescopic connecting rod, and a web baffle. The first hydraulic cylinder is fixed on the uppermost cross frame, and the other end of the telescopic connecting rod extending from its lower end is connected to the web baffle. Each web baffle is a horizontal plate structure, and it is offset-connected to the telescopic connecting rod, so that the length facing in is greater than the length facing out, which is convenient for hanging the web.

[0009] The beneficial effects of the present invention are as follows: By the size and positioning method of the web positioning, the position size after the web bonding is ensured, and the stability of the web gap is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 The front view structural schematic diagram according to an embodiment of the present invention is shown.

[0011] Figure 2 The side view structural schematic diagram according to an embodiment of the present invention is shown.

[0012] In the figure: 1, longitudinal frame; 2, vertical frame; 3, support leg; 4, ground wheel; 5, first hydraulic cylinder; 6, telescopic connecting rod; 7, web baffle; 8, blade root positioning plate bracket; 9, second hydraulic cylinder; 10, positioning plate connecting rod; 11, blade root positioning plate; 12, web. DETAILED DESCRIPTION OF THE INVENTION

[0013] In order to enable those skilled in the art of the present technical field to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the drawings and the best embodiments.

[0014] As shown in the figure, the present invention includes a bracket fixing frame, a positioning frame and a web placing device. The positioning frame is fixedly connected to both sides of the bracket fixing frame for fixing the blade, and a plurality of web placing devices are fixedly connected inside the bracket fixing frame for placing the web 12 on the blade surface.

[0015] The bracket fixing frame includes a plurality of longitudinal frames 1, vertical frames 2 and cross frames. The longitudinal frames 1, vertical frames 2 and cross frames are all square steels, and the square steels are connected to each other to form voids, which is convenient for the traveling crane to pick up. The support legs 3 are connected to the lower ends of the longitudinal frames 1 and vertical frames 2 to play a supporting role. The ground wheels 4 below the support legs 3 are convenient for movement.

[0016] A plurality of positioning frames are provided. Each positioning frame is fixed on the upper longitudinal frame 1 and the lower longitudinal frame 1 through the blade root positioning plate 11 bracket 8. The second hydraulic cylinder 9 is fixedly connected to the upper part of the blade root positioning plate 11 bracket 8 through a pulley. The end of the positioning plate connecting rod 10 of the second hydraulic cylinder 9 is connected to the blade root positioning plate 11. The height of the blade root positioning plate 11 is adjusted by the second hydraulic cylinder 9. At the same time, the blade root positioning plate 11 can move horizontally through the pulley, and the width of the blade root positioning plate 11 is adjusted to fix different blade roots, so as to adapt to different shapes of blades. A plurality of positioning frames are intermittently fixed along the longitudinal frame 1.

[0017] The web placing devices are arranged in pairs, and each pair of web placing devices is symmetrically arranged for hanging a group of webs 12. Each individual web placing device includes a first hydraulic cylinder 5, a telescopic connecting rod 6, and a web 12 baffle 7. The first hydraulic cylinder 5 is fixed on the topmost cross frame, and the other end of the telescopic connecting rod 6 extending from its lower end is connected to the web 12 baffle 7. Each web 12 baffle 7 is a horizontal plate structure, and it is offset-connected to the telescopic connecting rod 6 such that the length facing inwards is greater than the length facing outwards, facilitating the hanging of the web 12.

[0018] Furthermore, locking devices are fixed at corresponding positions on the blade to fix the relative positions of the web 12 and the blade.

[0019] The specific usage steps are as follows:

[0020] (1) Use a crane to lift the web 12 and the blade root positioning device to the designated position point;

[0021] (2) Place the blade at the positioning frame position. According to the web 12 positioning dimensions, adjust the web 12 and the blade root positioning device to the standard position; adjust the second hydraulic cylinder 9 and the pulley to fix the blade;

[0022] (3) The crane slowly descends and hoists the web 12 into the web placing device;

[0023] (4) Adjust the first hydraulic cylinder 5 to install the web 12 on the blade.

[0024] The beneficial effects of the present invention are:

[0025] 1. The position dimensions of the positioning device are adjustable, and one set of design can meet multiple blade profiles, reducing the additional costs caused by blade profile switching

[0026] 2. The positioning device replaces the manual line-drawing positioning operation, reducing the errors in web positioning caused by human operation;

[0027] 3. With stable position dimensions, control the gap after bonding each web, control the use of the blade web bonding adhesive, and improve the bonding performance.

[0028] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A web and root positioning device for a wind turbine blade, characterized in that: It includes a bracket fixing frame, a positioning frame, and a web placing device. The positioning frame is fixedly connected to both sides of the bracket fixing frame and is used to fix the blade. A plurality of web placing devices are fixedly connected inside the bracket fixing frame and are used to place the web (12) on the blade surface. The bracket fixing frame includes a plurality of longitudinal frames (1), a plurality of vertical frames (2), and a plurality of transverse frames. The longitudinal frames (1), vertical frames (2), and transverse frames are all square steel. The square steel is connected to each other to form voids, which is convenient for the overhead crane to pick up. The legs (3) are connected to the lower ends of the longitudinal frames (1) and vertical frames (2) to play a supporting role. The ground wheels (4) below the legs (3) facilitate movement; There are a plurality of positioning frames. Each positioning frame is fixed on the upper longitudinal frame (1) and the lower longitudinal frame (1) through the blade root positioning plate (11) bracket (8). A second hydraulic cylinder (9) is fixedly connected to the upper part of the blade root positioning plate (11) bracket (8) through a pulley. The end of the positioning plate connecting rod (10) of the second hydraulic cylinder (9) is connected to the blade root positioning plate (11). The height of the blade root positioning plate (11) is adjusted through the second hydraulic cylinder (9), and the blade root positioning plate (11) can move horizontally through the pulley to adjust the width of the blade root positioning plate (11); The web placing devices are arranged in pairs, and each pair of web placing devices is symmetrically arranged to hang a set of webs (12). Each web placing device monomer includes a first hydraulic cylinder (5), a telescopic connecting rod (6), and a web baffle (7). The first hydraulic cylinder (5) is fixed on the uppermost transverse frame. The other end of the telescopic connecting rod (6) extending from its lower end is connected to the web baffle (7). Each web baffle (7) is a horizontal plate structure, and it is offset-connected to the telescopic connecting rod (6) so that the length facing in is greater than the length facing out.

2. The web and root positioning device of the wind turbine blade according to claim 1, characterized in that: A locking device is fixed at the corresponding position on the blade to fix the relative position of the web (12) and the blade.

3. A method for positioning the web of a wind turbine blade and the blade, using the web and root positioning device of the wind turbine blade described in claim 1, characterized in that: The specific usage steps are as follows: (1) Use an overhead crane to pick up the web (12) and the blade root positioning device to the designated position point; (2) Place the blade at the positioning frame position. According to the positioning dimension of the web (12), adjust the web (12) and the blade root positioning device to the standard position; adjust the second hydraulic cylinder (9) and the pulley to fix the blade; (3) The overhead crane slowly descends and hoists the web (12) into the web placing device; (4) Adjust the first hydraulic cylinder (5) to install the web (12) on the blade.

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