Impeller jump detection tool

Abstract

The application relates to the field of impeller detection equipment technology, in particular to an impeller run-out detection tool which comprises a workbench, a reference table is rotationally connected to the workbench, the table surface of the reference table is smooth, a rotating assembly for driving the reference table to rotate is arranged on the workbench, a plurality of supporting blocks are slidably arranged on the reference table, the plurality of supporting blocks are equidistantly arranged along the circumference of the reference table axis, and a driving assembly for driving the plurality of supporting blocks to synchronously move outward or contract inward is arranged on the workbench. The application has the effects of improving the problem that the impeller detection tool can only match one specification of impeller with one positioning core, and improving the universality and clamping efficiency of the impeller detection tool.

Description

Technical Field

[0001] This utility model relates to the field of impeller testing equipment technology, and in particular to an impeller runout testing fixture. Background Technology

[0002] The impeller is a core pneumatic component of a centrifugal compressor. The quality of the impeller directly affects the reliability of the centrifugal compressor.

[0003] Currently, wind turbine impellers include both cast aluminum and welded iron impellers. Due to the complex structure of the impeller itself, and the influence of casting and mold errors on cast aluminum impellers, while welded impellers are affected by welding processes and dimensional deviations of structural components, wind turbine impellers may exhibit excessive radial and axial runout exceeding the technical requirements. This will affect the overall dynamic balance of the wind turbine, causing noise and harmful vibrations in the entire rotating system during high-speed operation, thus affecting various performance indicators and service life of the wind turbine, and reducing its reliability. Therefore, it is necessary to design and manufacture fixtures to conduct runout testing on wind turbine impellers. The impellers are mounted on the fixture and rotated to screen out impellers with runout exceeding the technical requirements, and these impellers are isolated and reworked to prevent unqualified impellers from flowing to the next process and causing unexpected phenomena.

[0004] The existing impeller inspection fixture requires a large number of accessories, mainly because the impeller mounting blocks on the fixture are of fixed dimensions. When the dimensional tolerance of the same size impeller flange is large, jamming or wobbling often occurs during installation due to improper dimensionality. Therefore, it is necessary to prepare mounting blocks of several different sizes. For example, for an impeller flange tolerance of Ф92 (0, -0.4), Ф91.95, Ф91.85, Ф91.75, Ф91.65, and Ф91.55 are required, significantly increasing the number of accessories.

[0005] The existing testing fixtures described above have large measurement errors, are not universal, and can only be used with one positioning core and one impeller with a specific tolerance size. As staff need to frequently change the mounting blocks, it is time-consuming, labor-intensive, and affects work efficiency. Utility Model Content

[0006] To address the issue that impeller testing fixtures can only be used with one positioning core for one type of impeller, and to improve the versatility and clamping efficiency of the impeller testing fixtures, this application provides an impeller runout testing fixture.

[0007] The impeller runout detection fixture provided in this application adopts the following technical solution:

[0008] A fixture for detecting impeller runout includes a worktable, a reference platform rotatably connected to the worktable, the surface of the reference platform being smooth, a rotating assembly for driving the reference platform to rotate on the worktable, a plurality of support blocks slidably disposed on the reference platform, the plurality of support blocks being equidistantly arranged circumferentially along the axis of the reference platform, and a driving assembly for driving the plurality of support blocks to move outward or retract inward synchronously on the worktable.

[0009] Preferably, the rotating assembly includes a first bearing housing, a track, a driving pulley, a driven pulley, a fixed frame, and a rotating motor. The first bearing housing is connected to the worktable, the reference platform is connected to the outer ring of the first bearing housing, the driven pulley is connected to the side wall of the reference platform, the fixed frame is connected to the worktable, the rotating motor is mounted on the fixed frame, the driving pulley is connected to the end of the rotating motor through which the output shaft passes through the fixed frame, and the track is wound between the driving pulley and the driven pulley.

[0010] Preferably, a slider is slidably disposed on the reference platform. The slider has an inverted "T" shaped cross-section. A groove is provided on the reference platform for the slider to slide. Four sliders are equidistantly arranged on the reference platform along the axis of the reference platform. The groove is arranged radially along the reference platform. The support block is connected to the slider and is located at the end of the slider near the center of the reference platform.

[0011] Preferably, a mounting block is connected to the reference platform, the mounting block is located at the end of the slide groove away from the center of the reference platform, a return spring is connected to the mounting block, the return spring is located inside the slide groove, and the end of the return spring away from the mounting block abuts against the slider.

[0012] Preferably, the drive assembly includes a mounting bracket, a push cylinder, a second bearing seat, and a tensioning block. The mounting bracket is connected to the bottom of the worktable, the push cylinder is connected to the mounting bracket, the axis of the piston rod of the push cylinder is collinear with the axis of the reference platform, the tensioning block is coaxially connected to the piston rod of the push cylinder through the second bearing seat, the piston rod of the push cylinder is connected to the inner ring of the second bearing seat, the tensioning block is conical, the support block has a guide slope adapted to the tensioning block, the tensioning block can slide against the guide slope, the reference platform has an operating port for the tensioning block to pass through, and the push cylinder has a built-in pressure sensor.

[0013] Preferably, at least three support blocks are provided, and the surface of the support block that contacts the impeller shaft hole is arc-shaped.

[0014] In summary, this application includes the following beneficial technical effects:

[0015] 1. This utility model provides an impeller runout detection fixture. Traditional fixtures require multiple sets of mounting blocks of different sizes for impellers of the same specification with different tolerances, resulting in a large number of parts and cumbersome management. This fixture uses a radially adjustable support block design and a drive component to make multiple support blocks extend and retract radially synchronously, so as to achieve adaptive clamping of impeller shaft holes with different tolerances. Only one set of fixtures is needed to cover a wide range of tolerances, thereby improving the problem that impeller detection fixtures can only use one positioning core for one specification of impeller, and improving the versatility and clamping efficiency of impeller detection fixtures.

[0016] 2. The impeller runout detection fixture provided by this utility model drives the conical tensioning block to move axially by pushing the cylinder, which forces the support block to expand or contract radially synchronously along the guide inclined surface, thereby realizing the rapid clamping and release of the impeller. No manual replacement of parts is required, the single operation time is shortened, and the production line efficiency is significantly improved. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the impeller runout detection fixture in the embodiments of this application;

[0018] Figure 2 This is a schematic diagram illustrating the driving component in an embodiment of this application.

[0019] Explanation of reference numerals in the attached drawings: 1. Worktable; 2. Reference platform; 21. Slider; 22. Mounting block; 221. Return spring; 3. Rotating assembly; 31. First bearing seat; 32. Track; 33. Drive pulley; 34. Driven pulley; 35. Fixed frame; 36. Rotating motor; 4. Support block; 5. Drive assembly; 51. Mounting frame; 52. Push cylinder; 53. Second bearing seat; 54. Tensioning block. Detailed Implementation

[0020] To enable those skilled in the art to better understand the present invention, the solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0021] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," 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 do not indicate or imply that the device or element referred to must have a specific orientation or specific orientation structure and operation, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0022] This application discloses a fixture for detecting impeller runout. (Refer to...) Figure 1 and Figure 2 The impeller runout detection fixture includes a worktable 1, a reference platform 2 rotatably connected to the worktable 1, the surface of the reference platform 2 being smooth, a rotating assembly 3 for driving the reference platform 2 to rotate on the worktable 1, a number of support blocks 4 slidably arranged on the reference platform 2, the number of support blocks 4 being equidistantly arranged along the circumference of the axis of the reference platform 2, and a driving assembly 5 for driving the number of support blocks 4 to move outward or retract inward synchronously on the worktable 1.

[0023] This fixture uses a radially adjustable support block 4 design and a drive component 5 to make multiple support blocks 4 extend and retract radially synchronously, so as to achieve adaptive clamping for impeller shaft holes with different tolerances. Only one set of fixtures is needed to cover a wide range of tolerances, thereby improving the problem that impeller inspection fixtures can only use one positioning core for one specification of impeller, and improving the versatility and clamping efficiency of impeller inspection fixtures.

[0024] The rotating assembly 3 includes a first bearing housing 31, a track 32, a drive pulley 33, a driven pulley 34, a fixed frame 35, and a rotating motor 36. The first bearing housing 31 is connected to the worktable 1, and the reference platform 2 is connected to the outer ring of the first bearing housing 31. The driven pulley 34 is connected to the side wall of the reference platform 2. The fixed frame 35 is connected to the worktable 1, and the rotating motor 36 is mounted on the fixed frame 35. The drive pulley 33 is connected to the output shaft of the rotating motor 36, which passes through the end of the fixed frame 35. The track 32 is wound between the drive pulley 33 and the driven pulley 34.

[0025] A slider 21 is slidably mounted on the reference platform 2. The cross-section of the slider 21 is inverted "T" shape. The reference platform 2 has a groove for the slider 21 to slide. Four sliders 21 are equidistantly arranged on the reference platform 2 along the circumference of the axis of the reference platform 2. The groove is arranged radially along the reference platform 2. A support block 4 is connected to the slider 21 and is located at the end of the slider 21 near the center of the reference platform 2.

[0026] A mounting block 22 is connected to the reference platform 2. The mounting block 22 is located at the end of the slide groove away from the center of the reference platform 2. A reset spring 221 is connected to the mounting block 22. The reset spring 221 is located inside the slide groove. The end of the reset spring 221 away from the mounting block 22 abuts against the slider 21.

[0027] The slider 21 automatically retracts under the action of the reset spring 221, ensuring that the support block 4 returns to its initial position after each test, thus avoiding manual reset operation.

[0028] The drive assembly 5 includes a mounting bracket 51, a push cylinder 52, a second bearing seat 53, and a tension block 54. The mounting bracket 51 is connected to the bottom of the worktable 1, and the push cylinder 52 is connected to the mounting bracket 51. The axis of the piston rod of the push cylinder 52 is collinear with the axis of the reference platform 2. The tension block 54 is coaxially connected to the piston rod of the push cylinder 52 through the second bearing seat 53. The piston rod of the push cylinder 52 is connected to the inner ring of the second bearing seat 53. The tension block 54 is conical. The support block 4 has a guide slope adapted to the tension block 54. The tension block 54 can slide against the guide slope. The reference platform 2 has an operating port for the tension block 54 to pass through. The push cylinder 52 has a built-in pressure sensor.

[0029] At least three support blocks 4 are provided (four are used in the attached drawings of this application), and the surface of the support block 4 that contacts the impeller shaft hole is set as an arc surface.

[0030] The implementation principle of the impeller runout detection fixture in this application embodiment is as follows: During clamping, the impeller is placed on the smooth surface of the reference platform 2, and the impeller is sleeved on the outside of the support block 4. The shaft hole of the impeller is roughly aligned with the center of the reference platform 2. Then, the push cylinder 52 pushes the tension block 54 to rise, forcing the support block 4 to expand radially synchronously along the guide slope, so that the tension block 54 centers and clamps the impeller. During detection, the rotating motor 36 drives the drive pulley 33 to rotate. Through the joint cooperation of the drive pulley 33, the track 32 and the driven pulley 34, the reference platform 2 and the impeller placed on it are driven to rotate. Since the push cylinder 52 and the tension block 54 are connected through the second bearing seat 53, the tension block 54 can rotate synchronously, ensuring that the support block 4 maintains the fixing effect on the impeller during the rotation.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of this utility model, and the protection scope of this utility model is not limited to the above embodiments. All technical solutions within the scope of this utility model's concept are within the protection scope of this utility model. It should be pointed out that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A fixture for detecting impeller runout, characterized in that: The system includes a worktable (1), on which a reference platform (2) is rotatably connected. The surface of the reference platform (2) is smooth. A rotating assembly (3) for driving the reference platform (2) to rotate is provided on the worktable (1). Several support blocks (4) are slidably arranged on the reference platform (2). The several support blocks (4) are equidistantly arranged circumferentially along the axis of the reference platform (2). A driving assembly (5) for driving the several support blocks (4) to move outward or retract inward synchronously is provided on the worktable (1).

2. The impeller runout detection fixture according to claim 1, characterized in that: The rotating assembly (3) includes a first bearing housing (31), a track (32), a drive pulley (33), a driven pulley (34), a fixed frame (35), and a rotating motor (36). The first bearing housing (31) is connected to the worktable (1). The reference platform (2) is connected to the outer ring of the first bearing housing (31). The driven pulley (34) is connected to the side wall of the reference platform (2). The fixed frame (35) is connected to the worktable (1). The rotating motor (36) is mounted on the fixed frame (35). The drive pulley (33) is connected to the output shaft of the rotating motor (36) which passes through the end of the fixed frame (35). The track (32) is wound between the drive pulley (33) and the driven pulley (34).

3. The impeller runout detection fixture according to claim 1, characterized in that: A slider (21) is slidably mounted on the reference platform (2). The cross-section of the slider (21) is inverted "T" shape. A groove is provided on the reference platform (2) for the slider (21) to slide. Four sliders (21) are equidistantly arranged on the reference platform (2) along the axis of the reference platform (2). The groove is arranged radially along the reference platform (2). A support block (4) is connected to the slider (21). The support block (4) is located at the end of the slider (21) near the center of the reference platform (2).

4. The impeller runout detection fixture according to claim 3, characterized in that: A mounting block (22) is connected to the reference platform (2). The mounting block (22) is located at the end of the slide groove away from the center of the reference platform (2). A reset spring (221) is connected to the mounting block (22). The reset spring (221) is located in the slide groove. The end of the reset spring (221) away from the mounting block (22) abuts against the slider (21).

5. The impeller runout detection fixture according to claim 1, characterized in that: The drive assembly (5) includes a mounting bracket (51), a push cylinder (52), a second bearing seat (53), and a tension block (54). The mounting bracket (51) is connected to the bottom of the worktable (1). The push cylinder (52) is connected to the mounting bracket (51). The axis of the piston rod of the push cylinder (52) is collinear with the axis of the reference platform (2). The tension block (54) is coaxially connected to the piston rod of the push cylinder (52) through the second bearing seat (53). The piston rod of the push cylinder (52) is connected to the inner ring of the second bearing seat (53). The tension block (54) is conical. The support block (4) has a guide slope adapted to the tension block (54). The tension block (54) can slide against the guide slope. The reference platform (2) has an operating port for the tension block (54) to pass through. The push cylinder (52) has a built-in pressure sensor.

6. The impeller runout detection fixture according to claim 1, characterized in that: At least three support blocks (4) are provided, and the surface of the support block (4) that contacts the impeller shaft hole is arc-shaped.

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