An auxiliary positioning and installation device for impeller blades

Abstract

This utility model provides an auxiliary positioning and installation device for impeller blades, including a positioning plate, a bottom plate, and a top plate arranged coaxially at intervals from bottom to top. The positioning plate is used to fit against the impeller disk. The positioning plate, bottom plate, and top plate are fixedly connected by a first connecting post at the center. Both the bottom plate and the top plate have insertion positioning slots at equal intervals along the circumference for inserting blades. By providing insertion positioning slots at equal intervals along the circumference on both the bottom plate and the top plate, and by fitting the positioning plate against the impeller disk during use, blade assembly and positioning can be achieved. After the blades are inserted into the insertion positioning slots on the bottom plate and the top plate, they fit against the impeller disk, and then the blades are sequentially welded onto the impeller disk. This eliminates the need for manual line drawing and calibration, significantly improving the efficiency of blade positioning and installation.

Description

Technical Field

[0001] This utility model relates to the technical field of blade positioning devices, and in particular to an auxiliary positioning and installation device for impeller blades. Background Technology

[0002] In the impeller manufacturing process, blade assembly and positioning is a critical step that directly affects the impeller's dynamic balance performance. Traditional blade assembly methods mainly rely on manual scribing for positioning. The specific operation process is as follows: the operator manually scribing the blade installation position lines on the impeller disk surface according to the drawing dimensions; after aligning the blade root with the scribing line, it is temporarily fixed, and the angle and spacing are checked visually or with simple measuring tools; after assembly, the circumferential distribution error of each blade needs to be measured one by one, and if the deviation is too large, it needs to be readjusted. Manual scribing is affected by the operator's experience and is prone to cumulative errors; visual alignment is difficult to guarantee the blade position, resulting in the impeller's dynamic balance exceeding tolerances after welding. Each blade needs to be scribed, aligned, and checked individually, and the assembly of eight blades is time-consuming. Utility Model Content

[0003] The purpose of this invention is to provide an auxiliary positioning and installation device for impeller blades, which solves the problems of low accuracy and insufficient consistency of manual marking positioning.

[0004] In accordance with the above objectives, this utility model provides an auxiliary positioning and installation device for impeller blades, comprising a positioning plate, a bottom plate, and a top plate arranged coaxially and spaced apart from bottom to top. The positioning plate is used to fit against the impeller disc. The positioning plate, bottom plate, and top plate are fixedly connected by a first connecting column at the center position. Both the bottom plate and the top plate are provided with insertion positioning grooves for inserting blades at equal intervals along the circumference.

[0005] Furthermore, a plurality of second connecting columns are provided at equal intervals along the circumference between the bottom plate and the top plate.

[0006] Furthermore, the base plate is provided with positioning holes at equal intervals along the circumference, and the positioning holes are connected to the mounting holes on the impeller disk by positioning screws.

[0007] Furthermore, the radius of the positioning plate is not greater than the shortest distance from the insertion positioning groove to the axis of the first connecting column.

[0008] Furthermore, the base plate and the top plate have the same radius.

[0009] Furthermore, the width of the insertion positioning groove is the same as the thickness of the blade.

[0010] Furthermore, the positioning plate has a positioning stop at the center of its bottom end that mates with the impeller disk.

[0011] Furthermore, both the first connecting column and the second connecting column are steel pipes.

[0012] Furthermore, a lifting ring is provided at the top of the first connecting column.

[0013] Furthermore, the second connecting column is welded to both the bottom plate and the top plate.

[0014] The technical solution of this utility model is to provide insertion positioning grooves for inserting blades at equal intervals along the circumference on both the bottom plate and the top plate. In use, the positioning plate is attached to the impeller disk to achieve the group positioning of the blades. After the blades are inserted into the insertion positioning grooves on the bottom plate and the top plate, they are attached to the impeller disk. Then, the blades are welded onto the impeller disk in sequence. There is no need for manual line drawing and calibration, which significantly improves the positioning and installation efficiency of the blades. This device is suitable for the installation of blade angles and positions in mass production. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of the device.

[0017] Figure 2 This is a schematic diagram of the device in its operational state.

[0018] Figure 3 This is another overall structural diagram of the device.

[0019] Explanation of reference numerals in the attached drawings: 1-positioning plate, 2-bottom plate, 3-top plate, 4-second connecting column, 5-first connecting column, 6-lifting ring, 7-impeller disc, 8-positioning screw, 9-blade, 10-insertion positioning groove, 11-positioning stop. Detailed Implementation

[0020] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0021] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to 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 of this utility model.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" 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; 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.

[0023] Example 1

[0024] like Figures 1-3 As shown, this utility model provides an auxiliary positioning and installation device for impeller blades, including a positioning plate 1, a bottom plate 2, and a top plate 3 arranged coaxially from bottom to top. The positioning plate 1 is used to fit against the impeller disk 7. In order to improve the positioning accuracy, a positioning stop 11 that cooperates with the impeller disk 7 is provided at the center of the bottom end of the positioning plate 1. The positioning stop is a circular protrusion that cooperates with the groove-type positioning stop on the impeller disk 7.

[0025] Positioning plate 1, base plate 2, and top plate 3 are fixedly connected by a first connecting column 5 at the center. Multiple second connecting columns 4 are evenly spaced circumferentially between the base plate 2 and top plate 3. The second connecting columns 4 are welded to both the base plate 2 and top plate 3. In this embodiment, both the first connecting column 5 and the second connecting column 4 are steel pipes. To facilitate hoisting, a lifting ring 6 is provided at the top of the first connecting column 5, and the lifting ring 6 is welded to the top of the first connecting column 5.

[0026] Both the bottom plate 2 and the top plate 3 are provided with insertion positioning grooves 10 at equal intervals along the circumference for inserting blades 9. The width of the insertion positioning groove 10 is the same as the thickness of the blade 9. The radius of the positioning plate 1 is not greater than the shortest distance from the insertion positioning groove 10 to the axis of the first connecting column 5, so that the positioning plate 1 does not affect the contact between the blade 9 and the impeller disk 7. The diameters of the bottom plate 2 and the top plate 3 are equal.

[0027] In order to fix the device on the impeller disk 7, this technical solution provides positioning holes at equal intervals along the circumference on the base plate 2, and the positioning holes are connected to the mounting holes on the impeller disk 7 by positioning screws 8.

[0028] During use, the lifting ring 6 is used to bring the positioning plate 1 into contact with the impeller disk 7. The positioning holes on the base plate 2 are connected and fixed to the mounting holes on the impeller disk 7 through the positioning screw 8. Then, the blades 9 are inserted into the corresponding insertion positioning slots 10 in sequence. Finally, the positioned blades 9 are welded to the impeller disk 7 in sequence. After welding is completed, the positioning screw 8 is loosened, and the device is lifted again by the lifting ring 6, leaving the welded blades 9 on the impeller disk 7.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A vane blade auxiliary positioning installation device, characterized by, It includes a positioning plate, a bottom plate, and a top plate arranged coaxially from bottom to top. The positioning plate is used to fit against the impeller disk. The positioning plate, bottom plate, and top plate are fixedly connected by a first connecting column at the center position. Both the bottom plate and the top plate are provided with insertion positioning grooves for inserting blades at equal intervals along the circumference.

2. The impeller blade auxiliary positioning mounting device according to claim 1, wherein, Multiple second connecting columns are provided at equal intervals along the circumference between the bottom plate and the top plate.

3. The impeller blade auxiliary positioning installation device according to claim 1, wherein, The base plate has positioning holes spaced at equal intervals along its circumference, and the positioning holes are connected to the mounting holes on the impeller disk by positioning screws.

4. The impeller blade auxiliary positioning mounting device according to claim 1, wherein, The radius of the positioning plate is not greater than the shortest distance from the insertion positioning slot to the axis of the first connecting column.

5. The impeller blade auxiliary positioning mounting device according to claim 1, wherein, The base plate and the top plate have the same radius.

6. The impeller blade auxiliary positioning mounting device according to claim 1, wherein, The width of the insertion positioning groove is the same as the thickness of the blade.

7. The impeller blade auxiliary positioning mounting device according to claim 1, wherein, The positioning plate has a positioning stop at the center of its bottom end that mates with the impeller disk.

8. The impeller blade auxiliary positioning and mounting device according to claim 2, characterized in that, Both the first connecting column and the second connecting column are steel pipes.

9. The vane blade auxiliary positioning mounting device of claim 1, wherein, The top of the first connecting column is equipped with a lifting ring.

10. The impeller blade auxiliary positioning and mounting device according to claim 2, characterized in that, The second connecting column is welded to both the bottom plate and the top plate.

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