Tool for rapidly and accurately measuring ovality of fragmented tower drum flange

Abstract

The utility model discloses a tool for rapidly and accurately measuring the ovality of a fragmented tower drum flange, which comprises an L-shaped fixed ruler and a slidable measuring ruler assembly, the long edge of the L-shaped fixed ruler is provided with a C-shaped groove structure, the back of the L-shaped fixed ruler extends to form a longitudinal reinforcing rib, the inner side of the C-shaped groove structure is provided with a wear-resistant layer, and the outer side of the L-shaped fixed ruler is provided with a longitudinal reinforcing rib. The slidable measuring scale assembly comprises an L-shaped graduated scale and a guide part embedded into the C-shaped groove structure, the fit clearance between the guide part and the C-shaped groove structure is 0.05-0.15 mm, and the measuring edge of the L-shaped graduated scale is of a fillet structure. The tool has the advantages of being simple in structure, convenient to operate, accurate in measurement, good in stability and the like, and can be widely applied to the tower manufacturing process of the wind power generation industry.

Description

Technical Field

[0001] This utility model relates to the field of wind power tower technology, specifically to a tooling for quickly and accurately measuring the ellipticity of segmented tower flanges. Background Technology

[0002] The tower (also known as the frame) is the fundamental component that supports the superstructure of a wind turbine generator, including the nacelle, hub, and blades. It firmly supports the wind turbine generator on the ground, providing the necessary mechanical support and structural stability for the entire wind power generation system. During tower manufacturing, flange connections are widely used for connections between tower sections and between the tower section and the main unit. The smoothness of these connections depends not only on the compatibility of the flange specifications but also significantly on the crucial factor of ellipticity. Accurate measurement of ellipticity, especially the measurement of data between the flange holes, is essential for ensuring a successful connection; among these, measuring the distance between the two flange holes passing through the center is particularly critical.

[0003] There are two main traditional methods for measuring flange ovality. One method uses a handheld laser rangefinder to measure the inner diameter of the flange. However, this method is limited by the precision of the machined surface; if the inner circle has an elliptical shape, it cannot accurately determine the specific differences in the spacing between flange holes. The other method uses a steel tape measure to measure the distance between two flange holes. However, because the flange diameter is relatively large, the tape measure tends to sag under its own weight, and variations in the force with which the measuring person tightens the tape measure can also lead to deviations in the measurement.

[0004] Especially for segmented tower structures (where each flange is divided into several individual segments and then assembled into a circular flange), measurement errors can have a significant impact on the final assembly of the tower body. Therefore, a new measuring fixture is urgently needed to solve this problem. Utility Model Content

[0005] The purpose of this invention is to provide a tooling for quickly and accurately measuring the ellipticity of segmented tower flanges, so as to solve the problems of inaccurate measurement and great influence from external factors in the existing technology.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A tooling for quickly and accurately measuring the ellipticity of segmented tower flanges includes an L-shaped fixed ruler and a sliding measuring scale assembly. The long side of the L-shaped fixed ruler is provided with a C-shaped groove structure, and multiple longitudinal reinforcing ribs extend from the back of the L-shaped fixed ruler. The inner side of the C-shaped groove structure is provided with a wear-resistant layer, and the surface roughness Ra of the wear-resistant layer is ≤1μm. The sliding measuring scale assembly includes an L-shaped scale, and the fitting clearance between the L-shaped scale and the C-shaped groove structure is 0.05-0.15mm. The measuring edge of the L-shaped scale has a rounded corner structure, and the radius R of the rounded corner ranges from 1.5±0.1mm.

[0008] In one embodiment, the longitudinal reinforcing rib has a rectangular cross-section structure, and the ratio of its height to the thickness of the L-shaped fixed ruler is 1:2.5-3.5. The spacing between the reinforcing ribs is 80-120mm.

[0009] In one embodiment, an extension rod is also included, which is connected and fixed to the end of the L-shaped fixed ruler via a connecting plate and a bolt and nut assembly.

[0010] In one embodiment, the connecting plate is provided with multiple bolt holes, a part of the connecting plate is placed on the extension rod, and another part is placed on the L-shaped fixing ruler. One end of the bolt is embedded in the C-shaped groove structure, and the other end passes through the bolt hole and is fixedly connected by a nut.

[0011] In one embodiment, the L-shaped scale surface is provided with laser-etched scale lines, the depth of which is 0.02-0.05mm.

[0012] In one embodiment, the short side of the L-shaped fixed ruler is provided with a magnetic fixing component, which includes a permanent magnet mounting groove and a permanent magnet disposed in the permanent magnet mounting groove, wherein the residual magnetic induction intensity of the permanent magnet is ≥1.2T.

[0013] The beneficial effects of this utility model lie in providing a fixture for quickly and accurately measuring the ellipticity of segmented tower flanges. It employs an L-shaped fixed ruler as the basic structure of the fixture, with a C-shaped groove structure on its long side to guide and support the sliding measuring scale assembly. Longitudinal reinforcing ribs extend from the back to enhance strength and rigidity. The sliding measuring scale assembly includes an L-shaped scale with precisely controlled clearance to ensure smooth sliding. A wear-resistant layer is provided on the inner side of the C-shaped groove structure to reduce wear, and an extension rod at the end expands the measurement range. The surface of the L-shaped scale uses laser-etched graduation lines to ensure clarity and durability. A magnetic fixing component is provided at the short end of the L-shaped fixed ruler for convenient adsorption. These designs collectively achieve rapid and accurate measurement of the ellipticity of segmented tower flanges, improving measurement accuracy and stability, facilitating the carrying and operation of the fixture, and meeting the measurement needs of flanges of different sizes. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of the tooling described in this utility model;

[0016] Figure 2 for Figure 1 Cross-sectional view of AA;

[0017] Figure 3 This is a schematic diagram of the extended rod structure described in this utility model;

[0018] Figure 4 This is a schematic diagram of the extended state of the present invention;

[0019] Figure 5 This is a schematic diagram of the connecting plate described in this utility model;

[0020] Figure 6 for Figure 4 Cross-sectional view of BB.

[0021] The attached diagram is labeled as follows: 1. L-shaped fixed ruler; 2. C-shaped groove structure; 3. L-shaped scale; 4. Longitudinal reinforcing rib; 5. Extension rod; 6. Connecting plate; 7. Bolt hole; 8. Bolt; 9. Nut. Detailed Implementation

[0022] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] like Figures 1 to 6 As shown, a tooling for quickly and accurately measuring the ellipticity of segmented tower flanges includes an L-shaped fixed ruler 1 and a sliding measuring scale assembly. The long side of the L-shaped fixed ruler 1 has a C-shaped groove structure 2 for guiding and supporting the sliding measuring scale assembly. Multiple longitudinal reinforcing ribs 4 extend from the back of the L-shaped fixed ruler 1 to enhance the strength and rigidity of the aluminum alloy body and prevent bending deformation during measurement. A wear-resistant layer with a surface roughness Ra≤1μm is provided inside the C-shaped groove structure 2 to reduce wear on the measuring scale during sliding, ensuring measurement accuracy and stability.

[0026] The sliding measuring scale assembly includes an L-shaped scale 3. The mating clearance between the L-shaped scale 3 and the C-shaped groove structure 2 is 0.05-0.15mm to ensure the smoothness and stability of the scale during sliding. The measuring edge of the L-shaped scale 3 has a rounded corner structure with a radius R ranging from 1.5±0.1mm to reduce damage and wear when the measuring end contacts the flange.

[0027] Furthermore, the longitudinal reinforcing rib 4 has a rectangular cross-section structure, with its height to the thickness of the L-shaped fixing ruler 1 in a ratio of 1:2.5-3.5, and the spacing between the reinforcing ribs is 80-120mm. This design ensures the strength of the main body while reducing weight, making it convenient to carry and operate.

[0028] This device also includes an extension rod 5, which has the same structure as the long side of the L-shaped fixed ruler 1, and also has a C-shaped groove structure 2 inside. The extension rod 5 is connected and fixed to the end of the L-shaped fixed ruler 1 through a connecting plate 6 and a bolt and nut assembly. Specifically, the connecting plate 6 has multiple bolt holes 7, a part of the connecting plate 6 is placed on the extension rod 5, and the other part is placed on the L-shaped fixed ruler 1. One end of the bolt 8 is embedded in the C-shaped groove structure 2, and the other end passes through the bolt hole 7 and is fixedly connected by a nut 9. The L-shaped fixed ruler 1, in conjunction with the extension rod 5, can expand the measuring range of the tooling.

[0029] The L-shaped scale 3 features laser-etched graduation lines on its surface, with a depth of 0.02-0.05 mm. Laser etching technology ensures the clarity and durability of the graduation lines, allowing the scale to maintain measurement accuracy even after prolonged use.

[0030] The short side of the L-shaped fixed ruler 1 can be equipped with a magnetic fixing component, which includes a permanent magnet mounting slot and a permanent magnet disposed within the slot. The residual magnetic induction intensity of the permanent magnet is ≥1.2T to ensure that the fixture can be stably attracted to a ferromagnetic object during use, facilitating measurement and operation. The attached drawings of this device are not shown; those skilled in the art can determine the specific installation position based on the actual fixture.

[0031] When using the tooling of this invention, first place it on the segmented tower flange to be measured. Then, slide the L-shaped scale 3, moving it within the C-shaped groove structure 2 until the measuring end of the scale aligns with the measuring point on the flange. At this point, the scale value on the scale can be read as the data for that measuring point. By measuring at different locations and comparing the data at each measuring point, the ovality of the flange can be determined. To extend the measuring range, the extension rod 5 can be connected to the L-shaped fixed scale and secured with a bolt and nut assembly. Then continue measuring until the required measurement data is obtained. The total measured value = fixed scale length + extension rod length (if applicable) + scale reading.

[0032] The tooling of this utility model has the advantages of simple structure, convenient operation, accurate measurement and good stability. It can be widely used in the tower manufacturing process of wind power generation industry and provides strong technical support for the connection of tower flanges.

[0033] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the scope of this utility model patent.

[0034] To facilitate understanding by those skilled in the art of the improvements of this utility model over the prior art, some of the drawings and descriptions of this utility model have been simplified, and for clarity, some other elements have been omitted from this application. Those skilled in the art should realize that these omitted elements may also constitute the content of this utility model.

Claims

1. A tooling for rapidly and accurately measuring the ellipticity of segmented tower flanges, characterized in that, The device includes an L-shaped fixed ruler (1) and a sliding measuring scale assembly. The long side of the L-shaped fixed ruler (1) is provided with a C-shaped groove structure (2). Multiple longitudinal reinforcing ribs (4) extend from the back of the L-shaped fixed ruler (1). The inner side of the C-shaped groove structure (2) is provided with a wear-resistant layer. The surface roughness Ra of the wear-resistant layer is ≤1μm. The sliding measuring scale assembly includes an L-shaped scale (3). The fitting gap between the L-shaped scale (3) and the C-shaped groove structure (2) is 0.05-0.15mm. The measuring edge of the L-shaped scale (3) is a rounded corner structure with a radius R ranging from 1.5±0.1mm.

2. The tooling for rapidly and accurately measuring the ellipticity of segmented tower flanges according to claim 1, characterized in that, The longitudinal reinforcing rib (4) has a rectangular cross-section structure, and the ratio of its height to the thickness of the L-shaped fixed ruler (1) is 1:2.5-3.

5. The spacing between the reinforcing ribs is 80-120mm.

3. The tooling for rapidly and accurately measuring the ellipticity of segmented tower flanges according to claim 1, characterized in that, It also includes an extension rod (5), which is connected and fixed to the end of the L-shaped fixed ruler (1) by a connecting plate (6) and a bolt and nut assembly.

4. The tooling for rapidly and accurately measuring the ellipticity of segmented tower flanges according to claim 3, characterized in that, The connecting plate (6) is provided with multiple bolt holes (7). A part of the connecting plate (6) is placed on the extension rod (5), and another part is placed on the L-shaped fixed ruler (1). One end of the bolt (8) is embedded in the C-shaped groove structure (2), and the other end passes through the bolt hole (7) and is fixedly connected by a nut (9).

5. The tooling for rapidly and accurately measuring the ellipticity of segmented tower flanges according to claim 1, characterized in that, The L-shaped scale (3) has laser-etched scale lines on its surface, and the depth of the laser-etched scale lines is 0.02-0.05mm.

6. The tooling for rapidly and accurately measuring the ellipticity of segmented tower flanges according to claim 1, characterized in that, The short side of the L-shaped fixed ruler (1) is provided with a magnetic fixing component. The magnetic fixing component includes a permanent magnet mounting groove and a permanent magnet disposed in the permanent magnet mounting groove. The residual magnetic induction intensity of the permanent magnet is ≥1.2T.

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