Impeller welding positioning tool

Abstract

The utility model discloses a kind of impeller welding positioning tool, which is composed of a plurality of positioning units that can be spliced into a ring at the head and tail;The number of positioning units is correspondingly arranged with the number of blades;The positioning unit comprises: a bottom plate;A pressing plate is arranged above the bottom plate, the inner side edge of the pressing plate is concave arc-shaped, and the radius of the inner side edge is compatible with the radius of the blade;A limiting plate is arranged above the pressing plate in parallel, the inner side edge of the limiting plate is concave arc-shaped, and the radius of the inner side edge is compatible with the radius of the blade, the inner side edge of the limiting plate is correspondingly arranged with the inner side edge of the pressing plate up and down;A support is located between the limiting plate and the pressing plate.The impeller welding positioning tool designed by the utility model can quickly position the hub and the blade of the impeller after spot welding by the positioning tool, and then full welding is carried out after the positioning tool is removed, which saves the positioning time of the blade and the hub and improves the production and processing efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of tooling technology, specifically relating to a welding and positioning tooling for impellers. Background Technology

[0002] The impeller is the core component of a wind turbine, and the impeller itself is composed of multiple parts, the most important of which are the central disc, the front disc, and several blades evenly distributed around the circumference, such as... Figure 1 As shown, the middle plate 11, front plate 12, and blades 13 are usually fixed by welding. However, in the actual welding process, directly placing the blades on the middle plate easily leads to positional deviations. Since the blades are the key structure for guiding airflow in the impeller, any deviation in blade position will alter the airflow trajectory, affecting the impeller's airflow delivery efficiency. To minimize blade positional deviations, workers must place the blades with extreme care, resulting in a very long placement time and severely impacting overall welding efficiency. Therefore, an impeller welding positioning fixture was designed to solve the above problems.

[0003] It should be noted that the above introduction to the technical background is only for the purpose of providing a clear and complete explanation of the technical solutions of this utility model and facilitating understanding by those skilled in the art. It should not be assumed that these technical solutions are known to those skilled in the art simply because they have been described in the background section of this utility model. Utility Model Content

[0004] To overcome the shortcomings of the prior art, the purpose of this utility model is to provide an impeller welding positioning fixture.

[0005] To achieve the above and other related objectives, the technical solution provided by this utility model is: an impeller welding positioning fixture, the impeller comprising a middle disc, a front disc, and a plurality of blades evenly distributed and welded between the two; the fixture is composed of a plurality of positioning units that can be spliced ​​end to end into a ring; the number of positioning units corresponds to the number of blades; the positioning unit comprises: a base plate; a pressure plate, the pressure plate being disposed above the base plate, the inner edge of the pressure plate being a concave arc shape, and the arc of the inner edge matching the arc of the blades; a limiting plate, the limiting plate being disposed parallel above the pressure plate, the inner edge of the limiting plate being a concave arc shape, and the arc of the inner edge matching the arc of the blades, the inner edge of the limiting plate and the inner edge of the pressure plate being vertically corresponding; and a support member, the support member being located between the limiting plate and the pressure plate.

[0006] Furthermore, several welding pre-drilled grooves are provided on the inner edge of the pressure plate. In this design, the positions of the welding pre-drilled grooves correspond to the welding positions of the blades on the central plate, making the welding positions more accurate.

[0007] Furthermore, the number of welding pre-reserved slots is greater than or equal to two. In this scheme, the number of welding pre-reserved slots can be two, three, or four.

[0008] Furthermore, the inner side of the base plate is provided with a support platform for placing the blade. In this design, the extended platform is used to place and support the blade.

[0009] Furthermore, the pressure plate also includes a stop block at its lower end, which is disposed along the outer edge of the pressure plate. The inner side of the stop block, together with the pressure plate and the bottom plate, forms a groove, the width of which is adapted to the thickness of the middle plate. In this design, the pressure plate and the stop block are integrally formed, ensuring structural stability.

[0010] Furthermore, the edges of the slots are all chamfered. In this design, the chamfering facilitates welding of the blades at the slots by the welding equipment.

[0011] Furthermore, the support member includes a first column and a second column; the upper and lower ends of the first column are respectively connected to end A of the limiting plate and end C of the pressure plate; the upper and lower ends of the second column are respectively connected to end B of the limiting plate and end D of the pressure plate. In this design, the height of the support member is lower than the blade height, and the support member is perpendicular to the limiting plate and the pressure plate.

[0012] Furthermore, the first and second columns are detachably connected to the limiting plate and the pressure plate, respectively. In this design, the detachable connection between the first and second columns and the limiting plate and pressure plate facilitates installation.

[0013] Furthermore, the outer edge of the base plate is a convex arc shape, and the outer edge of the pressure plate is also a convex arc shape. The outer edges of the base plate and the pressure plate are vertically aligned and fitted together. In this design, the outer edges of the base plate and the pressure plate are locked together using bolts or other fasteners to ensure structural stability.

[0014] Furthermore, the E end of the base plate is structurally adapted to the F end of the base plate. In this design, the splicing end structure of the base plate is structurally adapted to facilitate the splicing of the E end and the F end of the base plate.

[0015] Due to the application of the above technical solution, the beneficial effects of this utility model compared with the prior art are as follows:

[0016] The impeller welding positioning fixture designed in this utility model can quickly position the impeller's central plate and blades for spot welding, and then perform full welding after removing the positioning fixture. This saves the positioning time between the blades and the central plate and improves the efficiency of production and processing. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the impeller structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the three-dimensional structure of the positioning tooling of this utility model;

[0019] Figure 3 This is a top view schematic diagram of the positioning tooling structure of this utility model;

[0020] Figure 4 This is a bottom view schematic diagram of the positioning fixture of this utility model;

[0021] Figure 5 This is a schematic diagram of the positioning unit structure of this utility model;

[0022] Figure 6 This is a schematic diagram showing the positioning state of the impeller and positioning fixture of this utility model;

[0023] Figure 7 This is a schematic diagram showing the positioning state of the impeller and a single positioning unit of this utility model;

[0024] Figure 8 This is a schematic diagram (front view) showing the installation state of the impeller and positioning fixture of this utility model.

[0025] Figure 9 This is a schematic diagram (back side) showing the installation status of the impeller and positioning fixture of this utility model.

[0026] In the attached diagrams above, 1 is the impeller; 11 is the middle plate; 12 is the front plate; 13 is the blade; 2 is the positioning unit; 20 is the base plate; 21 is the pressure plate; 22 is the limiting plate; 23 is the first column; 24 is the second column; 25 is the welding pre-reserved groove; 26 is the support platform; 27 is the stop block; 28 is the slot; and 29 is the chamfer. Detailed Implementation

[0027] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0028] It should be noted that in the description of this utility model, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. These terms are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or component 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. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. The terms "horizontal," "vertical," and "suspended," etc., do not indicate that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0029] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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.

[0030] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms 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, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0031] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0032] Example:

[0033] This embodiment provides an impeller welding positioning fixture, see attached document. Figure 1 As shown, the impeller 1 includes a middle disk 11, a front disk 12, and a plurality of blades 13 evenly distributed and welded between the two; see appendix. Figure 2 Appendix Figure 3 and attached Figure 4 As shown, the tooling consists of several positioning units 2 that can be spliced ​​together to form a ring; the number of positioning units 2 corresponds to the number of blades 13.

[0034] See appendix Figure 5 As shown, the side with the same bending direction as the overall positioning unit 2 is the inner side, and the side with the opposite bending direction is the outer side. The positioning unit 2 includes:

[0035] The inner edges of the base plate 20 and pressure plate 21 are concave arc shapes; the inner side of the base plate 20 is provided with a support platform 26 for placing the blade 13. That is, the inner edge of the base plate 20 extends further inward than the inner edge of the pressure plate 21, and the extended platform is used to place and support the blade 13. The E end and F end of the base plate 20 are structurally compatible, facilitating the splicing of the E end and F end of the base plate 20.

[0036] A pressure plate 21 is positioned above the base plate 20. The inner edge of the pressure plate 21 is a concave arc shape, and the curvature of the inner edge matches the curvature of the blade 13. Several welding pre-reserved grooves 25 are formed on the inner edge of the pressure plate 21. The positions of the welding pre-reserved grooves 25 correspond to the welding positions of the blade 13 on the intermediate plate 11, making the welding position more accurate. The number of welding pre-reserved grooves 25 is greater than or equal to two. Ensuring that the number of welding pre-reserved grooves 25 can play a good role in positioning the blade 13. The number of welding pre-reserved grooves 25 can be two, three, or four.

[0037] The pressure plate 21 also includes a stop block 27 at its lower end. The stop block 27 is set along the outer edge of the pressure plate 21, and the inner side of the stop block 27, together with the pressure plate 21 and the base plate 20, forms a groove 28. The width of the groove 28 (the vertical height of the groove 28) is adapted to the thickness of the middle plate 11. When positioning the impeller 1 on the tooling, the edge of the middle plate 11 can be engaged in the groove 28. The pressure plate 21 and the stop block 27 are integrally formed to ensure structural stability. The edges of the groove 28 are all provided with chamfers 29. The chamfers 29 facilitate welding equipment to weld the blade 13 at the groove 28.

[0038] The limiting plate 22 is arranged parallel to the pressure plate 21 above it. The inner edge of the limiting plate 22 is a concave arc shape, and the curvature of the inner edge matches the curvature of the blade 13. The inner edge of the limiting plate 22 and the inner edge of the pressure plate 21 are arranged vertically and vertically respectively. The distance between the limiting plate 22 and the pressure plate 21 is less than the height of the blade 13. The inner sides of the limiting plate 22 and the pressure plate 21 are used to abut against the blade 13. When the limiting plate 22 abuts against the blade 13, it is located below the front disc 12.

[0039] A support component is located between the limiting plate 22 and the pressure plate 21. The support component includes a first column 23 and a second column 24. The upper and lower ends of the first column 23 are connected to end A of the limiting plate 22 and end C of the pressure plate 21, respectively; the upper and lower ends of the second column 24 are connected to end B of the limiting plate 22 and end D of the pressure plate 21, respectively. The height of the support component is lower than the height of the blade 13, and the support component is perpendicular to the limiting plate 22 and the pressure plate 21. The first column 23 and the second column 24 are detachably connected to the limiting plate 22 and the pressure plate 21, respectively. Mounting holes are provided at both ends of the limiting plate 22 and the pressure plate 21. The first column 23 and the second column 24 are detachably connected to the limiting plate 22 and the pressure plate 21 by bolts or other fasteners for easy installation.

[0040] See appendix Figure 2 Appendix Figure 3 Appendix Figure 4 Or attached Figure 5 As shown, the outer edge of the base plate 20 is a convex arc shape, and the outer edge of the pressure plate 21 is also a convex arc shape. The outer edges of the base plate 20 and the pressure plate 21 are vertically aligned and fitted together. The outer edges of the base plate 20 and the pressure plate 21 are locked together by bolts or other fasteners to ensure the stability of the structure.

[0041] Tooling usage method: First, install each positioning unit 2 of the positioning tooling around the central plate 11 of the impeller 1, see appendix. Figure 6 and attached Figure 9 As shown; then install each blade 13, and spot weld it in the reserved welding groove 25, see appendix. Figure 7 and attached Figure 8 As shown; then remove the positioning fixture and perform full welding.

[0042] The impeller welding positioning fixture designed in this utility model can quickly position the impeller's middle disk 11 and blades 13 for spot welding, and then remove the positioning fixture for full welding, saving the positioning time of blades 13 and middle disk 11 and improving the efficiency of production and processing.

[0043] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They cannot be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the protection scope of this utility model.

Claims

1. A welding and positioning fixture for an impeller, the impeller (1) comprising a middle disc (11), a front disc (12), and a plurality of blades (13) uniformly distributed and welded between the two; characterized in that: The fixture consists of several positioning units (2) that can be joined end to end to form a ring; the number of positioning units (2) corresponds to the number of blades (13); the positioning unit (2) includes: Base plate (20); Pressure plate (21), the pressure plate (21) is disposed above the base plate (20), the inner edge of the pressure plate (21) is a concave arc shape, and the curvature of the inner edge is adapted to the curvature of the blade (13). The limiting plate (22) is arranged parallel above the pressure plate (21). The inner edge of the limiting plate (22) is a concave arc shape, and the curvature of the inner edge is adapted to the curvature of the blade (13). The inner edge of the limiting plate (22) is arranged vertically and vertically corresponding to the inner edge of the pressure plate (21). A support member located between the limiting plate (22) and the pressure plate (21).

2. The impeller welding positioning fixture according to claim 1, characterized in that: Several welding pre-reserved grooves (25) are provided on the inner edge of the pressure plate (21).

3. The impeller welding positioning fixture according to claim 2, characterized in that: The number of the welding reserved grooves (25) is greater than or equal to two.

4. The impeller welding positioning fixture according to claim 1, characterized in that: The inner side of the base plate (20) is provided with a support platform (26) on which the blade (13) can be placed.

5. The impeller welding positioning fixture according to claim 1, characterized in that: The pressure plate (21) also includes a stop (27) at its lower end. The stop (27) is arranged along the outer edge of the pressure plate (21). The inner side of the stop (27) together with the pressure plate (21) and the bottom plate (20) forms a slot (28). The width of the slot (28) is adapted to the thickness of the middle plate (11).

6. The impeller welding positioning fixture according to claim 5, characterized in that: The edges of the card slot (28) are all chamfered (29).

7. The impeller welding positioning fixture according to claim 1, characterized in that: The support includes a first column (23) and a second column (24); the upper and lower ends of the first column (23) are respectively connected to the A end of the limiting plate (22) and the C end of the pressure plate (21); the upper and lower ends of the second column (24) are respectively connected to the B end of the limiting plate (22) and the D end of the pressure plate (21).

8. The impeller welding positioning fixture according to claim 7, characterized in that: The first column (23) and the second column (24) are detachably connected to the limiting plate (22) and the pressure plate (21), respectively.

9. The impeller welding positioning fixture according to claim 1, characterized in that: The outer edge of the base plate (20) is a convex arc shape, and the outer edge of the pressure plate (21) is a convex arc shape. The outer edges of the base plate (20) and the outer edges of the pressure plate (21) are vertically aligned and fitted together.

10. The impeller welding positioning fixture according to claim 1, characterized in that: The E end of the base plate (20) is configured to be adapted to the F end of the base plate (20).

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