An ellipticity correction device

Abstract

The invention relates to the technical field of ovality correction, and specifically discloses an ovality correction device, comprising an inner ring of a wind turbine bearing, wherein a positioning module is arranged in the middle of the inner ring of the wind turbine bearing. When the inner ring of the wind turbine bearing needs to be corrected for ovality, the positioning module is used to place the device at the central part of the inner cavity of the inner ring of the wind turbine bearing, so that an ovality detection module contacts the inner ring of the wind turbine bearing, and a rotating module is used to rotate the ovality detection module on the outer wall of the inner ring of the wind turbine bearing for one circle, and the ovality of the inner ring of the wind turbine bearing is detected by the ovality detection module. When the ovality exceeds a standard, the rotating module rotates the ovality detection module again to a position with a maximum diameter, and the inner ring of the wind turbine bearing is corrected for ovality by a correction module. During the correction, a correction amplitude is monitored by a secondary laser rangefinder and a secondary reflector to prevent cracks in the inner ring of the wind turbine bearing caused by a large extrusion amplitude at one time.

Description

Technical Field

[0001] The invention belongs to the technical field of ellipticity correction, and in particular relates to an ellipticity correction device. Background Art

[0002] Wind turbine bearings are a special type of bearings. After heat treatment or machining, the inner ring of a wind turbine bearing will deform due to stress release, changing from a circle to an ellipse, thereby producing ellipticity. The existence of ellipticity causes the inner ring of a wind turbine bearing to have different diameters. When the difference between the maximum diameter and the minimum diameter is large and exceeds the standard value, it will affect the use of the inner ring of the wind turbine bearing and may even make it impossible to use. Summary of the invention

[0003] The object of the present invention is to provide an ellipticity correction device to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] An ellipticity correction device comprises an inner ring of a wind turbine bearing. A positioning module is arranged in the middle of the inner ring of the wind turbine bearing. A rotating module is arranged on the upper end of the positioning module. Correction modules are symmetrically arranged on the left and right sides of the rotating module. An ellipticity detection module is arranged in the correction module.

[0006] Preferably, the positioning module includes a placement column, a connecting slot, a primary driver, a primary drive screw, a primary sleeve and an arc-shaped positioning plate, the placement column is arranged in the middle of the inner ring of the wind power bearing, the connecting slot is opened in the middle of the placement column, and the connecting slot passes through the placement column on the left and right, the primary driver is arranged in the connecting slot, and the primary driver is fixedly connected to the placement column through a positioning bolt, the primary driver has two output shafts, the output shafts on both sides of the primary driver are respectively connected to a primary drive screw, the primary sleeve is sleeved on one end of the primary drive screw away from the primary driver, and the inner wall of the primary sleeve The arc-shaped positioning plate is connected to the end of the first-level casing away from the first-level driving screw through a thread, and the outer wall of the arc-shaped positioning plate fits with the inner ring of the wind turbine bearing. The equipment is placed so that the placement column is at the center of the inner ring of the wind turbine bearing, and at the same time, the correction plate is located on the outside of the inner ring of the wind turbine bearing and the arc-shaped positioning plate is located on the inside of the inner ring of the wind turbine bearing. The first-level driver is started to rotate the first-level driving screw, so that the first-level casing drives the arc-shaped positioning plate to move toward the inner wall of the inner ring of the wind turbine bearing until the arc-shaped positioning plate fits with the inner wall of the inner ring of the wind turbine bearing.

[0007] The first-stage drive is a dual-axis motor;

[0008] A reinforcing piece is connected to the bottom end of the outer wall of the placement column in a circumferential array, and the bottom surface of the reinforcing piece is flush with the bottom surface of the placement column.

[0009] Preferably, the positioning module also includes a limiting sleeve and a limiting rod, the limiting rod is symmetrically connected to the two sides above the placement column, the limiting sleeve is sleeved on the end of the limiting rod away from the placement column, and the end of the limiting sleeve away from the limiting rod is connected to the arc-shaped positioning plate.

[0010] Preferably, the rotating module includes a secondary driver, a connecting square plate and a connecting frame, a mounting slot is provided in the middle of the top of the placement column, the secondary driver is arranged in the mounting slot, and the secondary driver is fixedly connected to the placement column through a positioning bolt, the bottom surface of the connecting square plate is connected to the output shaft at the top of the secondary driver, and the connecting frames are symmetrically connected on both sides of the connecting square plate;

[0011] The secondary drive is a servo motor;

[0012] There is a gap between the bottom surface of the connecting square plate and the bottom surface of the connecting frame and the top surface of the placement column;

[0013] A sliding arc plate is symmetrically arranged front and back on one side of the bottom surface of the connecting frame close to the placement column, and the inner wall of the sliding arc plate is slidably matched with the outer wall of the placement column.

[0014] Preferably, the correction module includes a hydraulic cylinder, a top plate, a bottom plate, a force transmission column, a correction plate, a secondary laser rangefinder and a secondary reflector. The hydraulic cylinder is connected to the middle of a side of the connecting frame away from the connecting square plate. The top plate is connected to the output shaft of the hydraulic cylinder. The bottom plate is connected to the bottom of the top plate. The correction plate is arranged below the hydraulic cylinder, and the correction plate is between the bottom plate and the inner ring of the wind turbine bearing. Four groups of force transmission columns are arranged, and the four groups of force transmission columns are respectively connected to the four corners of one side of the bottom plate close to the correction plate. One end of the force transmission column away from the bottom plate is connected to the correction plate. The secondary laser rangefinder is connected to the top of the top plate on the left side. The secondary reflector is connected to the top of the top plate on the right side, and the secondary laser rangefinder is flush with the secondary reflector.

[0015] The side of the correction plate close to the inner ring of the wind power bearing is a curved surface structure.

[0016] Preferably, the ovality detection module includes a three-stage driver, a two-stage driving screw, a two-stage sleeve and a circular hole, the three-stage driver is arranged in the middle of a side opposite to the bottom plate and the correction plate, and the three-stage driver is fixedly connected to the bottom plate by a positioning bolt, the two-stage driving screw is connected to the output end of the three-stage driver, the circular hole is arranged in the middle of a side of the correction plate close to the bottom plate, the two-stage sleeve is sleeved on one end of the two-stage driving screw away from the three-stage driver, and the inner wall of the two-stage sleeve is threadedly connected to the two-stage driving screw, and one end of the two-stage sleeve away from the two-stage driving screw passes through the circular hole;

[0017] The third-stage drive is a servo motor.

[0018] Preferably, the ovality detection module also includes a contraction chamber, a primary assembly plate, a secondary assembly plate, a reset spring, a primary laser rangefinder, a primary reflector and a roller, the contraction chamber is arranged in the middle of a side opposite to the correction plate and the inner ring of the wind turbine bearing, and the contraction chamber is communicated with the circular hole, the primary assembly plate is arranged in the contraction chamber, and the primary assembly plate is connected to an end of the secondary sleeve away from the secondary driving screw rod, the secondary assembly plate is arranged on a side of the primary assembly plate away from the secondary sleeve, and the reset spring is arranged between the primary assembly plate and the secondary assembly The first assembly plate is between the first assembly plate and the second assembly plate, and both ends of the reset spring are respectively connected to the first assembly plate and the second assembly plate, the first laser rangefinder is arranged in the middle of the side opposite to the first assembly plate and the second assembly plate, the first reflector is arranged in the middle of the side opposite to the second assembly plate and the first assembly plate, the first laser rangefinder and the first reflector are both inside the reset spring, and the first laser rangefinder is flush with the first reflector, the roller is connected to the middle of the side of the second assembly plate away from the first assembly plate, and a gap is left between the roller and the correction plate;

[0019] The four corners of the side opposite to the primary assembly plate and the secondary assembly plate are connected with stabilizing sleeves, the inner wall of the end of the stabilizing sleeve away from the primary assembly plate is sleeved with a stabilizing rod, and the outer wall of the stabilizing rod and the inner wall of the stabilizing sleeve are slidably fitted, the end of the stabilizing rod away from the stabilizing sleeve is connected to the secondary assembly plate, and a gap is left between the stabilizing sleeve and the stabilizing rod and the reset spring.

[0020] Preferably, the ovality detection module also includes a limit slot and a limit plate. The limit slot is symmetrically arranged inside the correction plate front and back, and the limit slot is connected to the shrinkage chamber. The limit plate is slidably fitted in the limit slot, and the limit plate is symmetrically connected front and back to the middle of both sides of the first-level assembly plate.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: when the present invention is used, when it is necessary to correct the ovality of the inner ring of the wind turbine bearing, the positioning module is used to place the device at the center of the inner cavity of the inner ring of the wind turbine bearing, so that the ovality detection module is in contact with the inner ring of the wind turbine bearing, and the rotation module is used to make the ovality detection module rotate one circle on the outer wall of the inner ring of the wind turbine bearing, and the ovality detection module detects the ovality of the inner ring of the wind turbine bearing. When the ovality exceeds the standard, the rotation module makes the ovality detection module rotate again to the position with the largest diameter, and the inner ring of the wind turbine bearing is corrected by the correction module. The ellipticity correction completes one-time correction of the inner ring of the wind turbine bearing. During the correction, the correction amplitude is monitored by the secondary laser rangefinder and the secondary reflector to prevent cracks in the inner ring of the wind turbine bearing caused by a large extrusion amplitude. After one correction is completed, the ellipticity of the inner ring of the wind turbine bearing is detected again by the rotation module and the ellipticity detection module. When the ellipticity exceeds the standard, the correction equipment continues to perform correction. After each correction, the ellipticity of the inner ring of the wind turbine bearing is detected again. When the ellipticity value reaches the standard, the correction is ended. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The figure is a schematic diagram of the overall structure of an ellipticity correction device.

[0023] Figure 2 A schematic diagram of a rotation module of an ellipticity correction device.

[0024] Figure 3 This is a schematic diagram of the bottom structure of a positioning module of an ovality correction device.

[0025] Figure 4 This is a schematic diagram of the internal structure of a placement column of an ovality correction device.

[0026] Figure 5 A schematic diagram of a roller of an ovality correction device.

[0027] Figure 6 A schematic diagram of a circular hole of an ovality correction device.

[0028] Figure 7 This is a schematic diagram of the internal structure of a correction plate of an ovality correction device.

[0029] Figure 8 A schematic diagram of a limit slot for an ellipticity correction device.

[0030] In the figure: 1. Inner ring of wind turbine bearing; 2. Positioning module; 21. Placement column; 22. Connecting notch; 23. Primary driver; 24. Primary driving screw; 25. Primary sleeve; 26. Arc positioning plate; 27. Strengthening member; 28. Limiting sleeve; 29. ​​Limiting rod; 3. Rotation module; 31. Installation notch; 32. Secondary driver; 33. Connecting square plate; 34. Connecting frame; 35. Sliding arc plate; 4. Correction module; 41. Hydraulic cylinder; 42. Top plate; 43. Bottom plate; 44. force transmission column; 45, correction plate; 46, secondary laser rangefinder; 47, secondary reflector; 5, ovality detection module; 51, third-level driver; 52, secondary drive screw; 53, secondary sleeve; 54, round hole; 55, contraction chamber; 56, primary assembly plate; 57, secondary assembly plate; 58, reset spring; 59, primary laser rangefinder; 510, primary reflector; 511, roller; 512, stabilizing sleeve; 513, stabilizing rod; 514, limit slot; 515, limit plate. DETAILED DESCRIPTION

[0031] See also Figure 1-Figure 8 As shown, an ellipticity correction device includes a wind turbine bearing inner ring 1, a positioning module 2 is provided in the middle of the wind turbine bearing inner ring 1, a rotating module 3 is provided on the upper end of the positioning module 2, correction modules 4 are symmetrically provided on the left and right sides of the rotating module 3, and an ellipticity detection module 5 is provided in the correction module 4.

[0032] refer to Figure 1-Figure 4As shown, the positioning module 2 includes a placement column 21, a connecting slot 22, a primary driver 23, a primary driving screw 24, a primary sleeve 25 and an arc-shaped positioning plate 26. The placement column 21 is arranged in the middle of the inner ring 1 of the wind power bearing, the connecting slot 22 is opened in the middle of the placement column 21, and the connecting slot 22 passes through the placement column 21 from left to right, the primary driver 23 is arranged in the connecting slot 22, and the primary driver 23 is fixedly connected to the placement column 21 through a positioning bolt, the primary driving screw 24 is symmetrically arranged on both sides of the primary driver 23, and the primary driving screw 24 is connected to the output end of the primary driver 23, the primary sleeve 25 is sleeved on the outer wall of the end of the primary driving screw 24 away from the primary driver 23, and the inner wall of the primary sleeve 25 is connected to the primary driver 23 through a thread. The driving screw 24 is threadedly connected, and the arc-shaped positioning plate 26 is connected to one end of the primary sleeve 25 away from the primary driving screw 24, and the outer wall of the arc-shaped positioning plate 26 is in contact with the inner ring 1 of the wind turbine bearing. The equipment is placed so that the placement column 21 is located at the center of the inner ring 1 of the wind turbine bearing, and the correction plate 45 is located on the outside of the inner ring 1 of the wind turbine bearing, and the arc-shaped positioning plate 26 is located on the inside of the inner ring 1 of the wind turbine bearing. The primary driver 23 is started to rotate the primary driving screw 24, so that the primary sleeve 25 drives the arc-shaped positioning plate 26 to move toward the inner wall of the inner ring 1 of the wind turbine bearing, until the arc-shaped positioning plate 26 is in contact with the inner wall of the inner ring 1 of the wind turbine bearing, thereby positioning the placement column 21 to ensure that the placement column 21 is located at the center of the inner ring 1 of the wind turbine bearing;

[0033] The first-stage driver 23 is a dual-axis motor;

[0034] A reinforcing member 27 is connected to the bottom of the outer wall of the placement column 21 in a circumferential array, and the bottom surface of the reinforcing member 27 is flush with the bottom surface of the placement column 21, thereby increasing the contact area between the placement column 21 and the ground and improving the stability of the placement column 21.

[0035] refer to Figure 1-Figure 4 As shown, the positioning module 2 also includes a limiting sleeve 28 and a limiting rod 29. The limiting rod 29 is symmetrically connected to the two sides above the placement column 21. The limiting sleeve 28 is sleeved on the outer wall of the end of the limiting rod 29 away from the placement column 21, and the end of the limiting sleeve 28 away from the limiting rod 29 is connected to the arc-shaped positioning plate 26 to limit the arc-shaped positioning plate 26 and prevent the arc-shaped positioning plate 26 and the first-level sleeve 25 from rotating with the rotation of the first-level driving screw 24.

[0036] refer to Figure 1-Figure 4As shown, the rotating module 3 includes a secondary driver 32, a connecting square plate 33 and a connecting frame 34. A mounting slot 31 is provided in the middle of the top of the placement column 21. The secondary driver 32 is arranged in the mounting slot 31, and the secondary driver 32 is fixedly connected to the placement column 21 through a positioning bolt. The bottom surface of the connecting square plate 33 is connected to the output shaft at the top of the secondary driver 32. The connecting frames 34 are symmetrically connected on both sides of the connecting square plate 33. When the secondary driver 32 is started, the connecting square plate 33 and the connecting frame 34 drive the correction module 4 and the ellipticity detection module 5 to rotate.

[0037] The secondary driver 32 is a servo motor;

[0038] There is a gap between the bottom surface of the connecting square plate 33 and the bottom surface of the connecting frame 34 and the top surface of the placement column 21;

[0039] A sliding arc plate 35 is symmetrically provided on the front and back sides of the bottom surface of the connecting frame 34 close to the placement column 21, and the inner wall of the sliding arc plate 35 slides with the outer wall of the placement column 21 to restrict the connecting square plate 33 and ensure the stability of the connecting square plate 33 when rotating.

[0040] refer to Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 , Figure 7 and Figure 8As shown, the correction module 4 includes a hydraulic cylinder 41, a top plate 42, a bottom plate 43, a force transmission column 44, a correction plate 45, a secondary laser rangefinder 46 and a secondary reflector 47. The hydraulic cylinder 41 is connected to the middle of the side of the connecting frame 34 away from the connecting square plate 33, the top plate 42 is connected to the output shaft of the hydraulic cylinder 41, the bottom plate 43 is connected to the bottom of the top plate 42, the correction plate 45 is arranged below the hydraulic cylinder 41, and the correction plate 45 is between the bottom plate 43 and the inner ring 1 of the wind turbine bearing, the force transmission column 44 is provided with four groups, and the four groups of force transmission columns 44 are respectively connected to the four corners of one side of the bottom plate 43 close to the correction plate 45, the end of the force transmission column 44 away from the bottom plate 43 is connected to the correction plate 45, and the secondary laser rangefinder 46 is connected to the top located on the left side. At the top of the plate 42, the secondary reflector 47 is connected to the top of the top plate 42 on the right side, and the secondary laser rangefinder 46 is flush with the secondary reflector 47. The hydraulic cylinder 41 is started to move the correction plate 45 toward the inner ring 1 of the wind turbine bearing until the inner wall of the correction plate 45 fits with the inner ring 1 of the wind turbine bearing, and the primary driver 23 is started to move the arc positioning plate 26 away from the inner ring 1 of the wind turbine bearing to prevent the arc positioning plate 26 from affecting the ellipticity correction of the inner ring 1 of the wind turbine bearing. At this time, the secondary laser rangefinder 46 is started to monitor the correction distance of the two groups of correction plates 45 through the secondary laser rangefinder 46 and the secondary reflector 47. When the correction distance reaches the preset value, the correction is stopped to prevent the inner ring 1 of the wind turbine bearing from being cracked due to a large extrusion amplitude at one time;

[0041] The side of the correction plate 45 close to the inner ring 1 of the wind turbine bearing is designed as a curved surface structure to increase the fit between the correction plate 45 and the inner ring 1 of the wind turbine bearing.

[0042] refer to Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 , Figure 7 and Figure 8As shown, the ovality detection module 5 includes a three-stage driver 51, a two-stage driving screw rod 52, a two-stage sleeve 53 and a circular hole 54. The three-stage driver 51 is arranged in the middle of the side opposite to the bottom plate 43 and the correction plate 45, and the three-stage driver 51 is fixedly connected to the bottom plate 43 by a positioning bolt, the two-stage driving screw rod 52 is connected to the output end of the three-stage driver 51, and the circular hole 54 is provided in the middle of one side of the correction plate 45 close to the bottom plate 43, the two-stage sleeve 53 is sleeved on the outer wall of the two-stage driving screw rod 52 at one end away from the three-stage driver 51, and the inner wall of the two-stage sleeve 53 is threadedly connected to the two-stage driving screw rod 52 by a bolt, and the two-stage sleeve 53 is provided on the outer wall of the two-stage driving screw rod 52. One end of 53 away from the secondary drive screw 52 passes through the circular hole 54. Before testing, the three-stage driver 51 is started to drive the secondary drive screw 52 to rotate, so that the secondary sleeve 53 drives the roller 511 to move toward the outer wall of the inner ring 1 of the wind power bearing. After the roller 511 fits with the outer wall of the inner ring 1 of the wind power bearing, it continues to move a certain distance, while ensuring that there is a gap between the correction plate 45 and the inner ring 1 of the wind power bearing. Before correction, the three-stage driver 51 is started to drive the secondary drive screw 52 to rotate, so that the secondary sleeve 53 drives the roller 511 to move toward the direction of the inner ring 1 of the wind power bearing away from the outer wall, until the roller 511 shrinks into the shrinkage chamber 55;

[0043] The three-stage driver 51 is a servo motor.

[0044] refer to Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 , Figure 7 and Figure 8As shown, the ovality detection module 5 also includes a contraction chamber 55, a primary assembly plate 56, a secondary assembly plate 57, a reset spring 58, a primary laser rangefinder 59, a primary reflector 510 and a roller 511. The contraction chamber 55 is arranged in the middle of the side opposite to the correction plate 45 and the inner ring 1 of the wind turbine bearing, and the contraction chamber 55 is connected to the circular hole 54. The primary assembly plate 56 is arranged in the contraction chamber 55, and the primary assembly plate 56 and the secondary sleeve 53 are away from the secondary drive wire. The first end of the rod 52 is connected, the second assembly plate 57 is arranged on the side of the first assembly plate 56 away from the second sleeve 53, the return spring 58 is arranged between the first assembly plate 56 and the second assembly plate 57, and the two ends of the return spring 58 are respectively connected to the first assembly plate 56 and the second assembly plate 57, the first laser rangefinder 59 is arranged in the middle of the side opposite to the first assembly plate 56 and the second assembly plate 57, and the first reflector 510 is arranged between the second assembly plate 57 and the first assembly plate In the middle of the side opposite to the component 56, the primary laser rangefinder 59 and the primary reflector 510 are both inside the reset spring 58, and the primary laser rangefinder 59 is flush with the primary reflector 510, the roller 511 is connected to the middle of the side of the secondary assembly plate 57 away from the primary assembly plate 56, and there is a gap between the roller 511 and the correction plate 45, the secondary driver 32 is started, the connecting square plate 33 and the connecting frame 34 drive the correction module 4 and the ovality detection module 5 to rotate, when the diameter of the inner ring 1 of the wind power bearing changes, due to the setting of the reset spring 58 and the fixed position of the primary assembly plate 56, the secondary assembly plate 57 will drive the roller 511 to always fit the outer wall of the inner ring 1 of the wind power bearing, at this time, the distance between the primary laser rangefinder 59 and the primary reflector 510 changes and is recorded by the primary laser rangefinder 59, and the ovality detection module 5 obtains the ovality value after the outer wall of the inner ring 1 of the wind power bearing rotates one circle;

[0045] The four corners of the side opposite to the primary assembly plate 56 and the secondary assembly plate 57 are connected with a stabilizing sleeve 512. The inner wall of the end of the stabilizing sleeve 512 away from the primary assembly plate 56 is sleeved with a stabilizing rod 513, and the outer wall of the stabilizing rod 513 is slidably fitted with the inner wall of the stabilizing sleeve 512. The end of the stabilizing rod 513 away from the stabilizing sleeve 512 is connected to the secondary assembly plate 57, and a gap is left between the stabilizing sleeve 512 and the stabilizing rod 513 and the return spring 58, so as to improve the stability of the translation of the secondary assembly plate 57.

[0046] refer to Figure 8As shown, the ovality detection module 5 also includes a limit slot 514 and a limit plate 515. The limit slot 514 is symmetrically opened front and back inside the correction plate 45, and the limit slot 514 is communicated with the contraction chamber 55. The limit plate 515 is slidably fitted in the limit slot 514, and the limit plate 515 is symmetrically connected front and back to the middle of both sides of the primary assembly plate 56, which restricts the primary assembly plate 56, not only preventing the secondary sleeve 53 from rotating with the secondary drive screw 52, ​​but only translating with the rotation of the secondary drive screw 52, ​​but also determining the translation range of the secondary sleeve 53 to prevent the secondary sleeve 53 from separating from the secondary drive screw 52.

[0047] Working principle: Place the device so that the placement column 21 is at the center of the inner ring 1 of the wind turbine bearing, and at the same time, the correction plate 45 is located outside the inner ring 1 of the wind turbine bearing, and the arc-shaped positioning plate 26 is located inside the inner ring 1 of the wind turbine bearing. Start the first-stage driver 23 to rotate the first-stage drive screw 24, so that the first-stage sleeve 25 drives the arc-shaped positioning plate 26 to move toward the inner wall of the inner ring 1 of the wind turbine bearing, until the arc-shaped positioning plate 26 fits with the inner wall of the inner ring 1 of the wind turbine bearing, thereby positioning the placement column 21, start the third-stage driver 51, drive the second-stage drive screw 52 to rotate, so that the second-stage sleeve 53 drives the roller 5 11 moves toward the outer wall of the inner ring 1 of the wind turbine bearing. After the roller 511 fits with the outer wall of the inner ring 1 of the wind turbine bearing, it continues to move a certain distance while ensuring that there is a gap between the correction plate 45 and the inner ring 1 of the wind turbine bearing. The secondary driver 32 is started to make the connecting square plate 33 and the connecting frame 34 drive the correction module 4 and the ovality detection module 5 to rotate. When the diameter of the inner ring 1 of the wind turbine bearing changes, due to the setting of the reset spring 58 and the fixed position of the first-level assembly plate 56, the second-level assembly plate 57 will drive the roller 511 to always fit the outer wall of the inner ring 1 of the wind turbine bearing. At this time, the first-level laser rangefinder 5 9 and the first-level reflector 510 change, and are recorded by the first-level laser rangefinder 59. After the ellipticity detection module 5 rotates one circle around the outer wall of the inner ring 1 of the wind turbine bearing, the ellipticity value is obtained. When the ellipticity exceeds the standard, the rotation module 3 rotates the ellipticity detection module 5 to the position with the largest diameter again, starts the third-level driver 51, drives the second-level driving screw 52 to rotate, and makes the second-level sleeve 53 drive the roller 511 to move toward the direction of the inner ring 1 of the wind turbine bearing away from the outer wall, until the roller 511 is retracted into the retraction chamber 55, and starts the hydraulic cylinder 41 to make the correction plate 45 move toward the wind turbine bearing. The inner ring 1 moves until the inner wall of the correction plate 45 fits with the inner ring 1 of the wind turbine bearing, and the first-level driver 23 is started to move the arc-shaped positioning plate 26 away from the inner ring 1 of the wind turbine bearing to prevent the arc-shaped positioning plate 26 from affecting the ellipticity correction of the inner ring 1 of the wind turbine bearing. At this time, the second-level laser rangefinder 46 is started, and the correction distance of the two sets of correction plates 45 is monitored by the second-level laser rangefinder 46 and the second-level reflector 47. When the correction distance reaches the preset value, the correction is stopped to prevent the inner ring 1 of the wind turbine bearing from being cracked due to a large extrusion amplitude at one time. At this point, the first correction of the inner ring 1 of the wind turbine bearing is completed;

[0048] After one calibration is completed, the ovality of the inner ring 1 of the wind turbine bearing is detected again through the rotation module 3 and the ovality detection module 5. When the ovality is detected to exceed the standard, the calibration equipment continues to perform calibration. After each calibration, the ovality of the inner ring 1 of the wind turbine bearing is detected again. When the ovality value reaches the standard, the calibration is ended.

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An ellipticity correction device, comprising an inner ring of a wind turbine bearing (1), characterized in that: A positioning module (2) is provided in the middle of the inner ring (1) of the wind turbine bearing, a rotating module (3) is provided at the upper end of the positioning module (2), correction modules (4) are symmetrically provided on the left and right sides of the rotating module (3), and an ellipticity detection module (5) is provided in the correction module (4); The positioning module (2) comprises a placement column (21), a connecting slot (22), a first-level driver (23), a first-level driving screw (24), a first-level sleeve (25) and an arc-shaped positioning plate (26); the placement column (21) is arranged in the middle of the inner ring (1) of the wind power bearing; the connecting slot (22) is opened in the middle of the placement column (21), and the connecting slot (22) passes through the placement column (21) from left to right; the first-level driver (23) is arranged in the connecting slot (22), and the first-level driver (23) is fixedly connected to the placement column (21) via a positioning bolt. The first-stage driver (23) has two output shafts, and the output shafts on both sides of the first-stage driver (23) are respectively connected to a first-stage driving screw rod (24), the first-stage sleeve (25) is sleeved on one end of the first-stage driving screw rod (24) away from the first-stage driver (23), and the inner wall of the first-stage sleeve (25) is threadedly connected to the first-stage driving screw rod (24) through a thread, and the arc-shaped positioning plate (26) is connected to one end of the first-stage sleeve (25) away from the first-stage driving screw rod (24), and the outer wall of the arc-shaped positioning plate (26) is in contact with the inner ring (1) of the wind turbine bearing; The first-stage driver (23) is a dual-axis motor; A reinforcing member (27) is connected to the bottom end of the outer wall of the placement column (21) in a circumferential array, and the bottom surface of the reinforcing member (27) is flush with the bottom surface of the placement column (21); The rotating module (3) comprises a secondary driver (32), a connecting square plate (33) and a connecting frame (34); a mounting notch (31) is provided in the middle of the top of the placement column (21); the secondary driver (32) is arranged in the mounting notch (31), and the secondary driver (32) is fixedly connected to the placement column (21) via positioning bolts; the bottom surface of the connecting square plate (33) is connected to the output shaft at the top of the secondary driver (32); and the connecting frames (34) are symmetrically connected to both sides of the connecting square plate (33); The secondary drive (32) is a servo motor; A gap is left between the bottom surface of the connecting square plate (33) and the bottom surface of the connecting frame (34) and the top surface of the placement column (21); A sliding arc plate (35) is symmetrically provided on one side of the bottom surface of the connecting frame (34) close to the placement column (21) in the front and rear directions, and the inner wall of the sliding arc plate (35) is slidably matched with the outer wall of the placement column (21); The correction module (4) comprises a hydraulic cylinder (41), a top plate (42), a bottom plate (43), a force transmission column (44), a correction plate (45), a secondary laser rangefinder (46) and a secondary reflector (47); the hydraulic cylinder (41) is connected to the middle of a side of the connection frame (34) away from the connection square plate (33); the top plate (42) is connected to the output shaft of the hydraulic cylinder (41); the bottom plate (43) is connected to the bottom of the top plate (42); the correction plate (45) is arranged below the hydraulic cylinder (41), and the correction plate (45) is located at the bottom plate Between the bottom plate (43) and the inner ring (1) of the wind turbine bearing, four groups of force transmission columns (44) are provided, and the four groups of force transmission columns (44) are respectively connected to the four corners of one side of the bottom plate (43) close to the correction plate (45), one end of the force transmission column (44) away from the bottom plate (43) is connected to the correction plate (45), a secondary laser rangefinder (46) is connected to the top of the top plate (42) located on the left, a secondary reflector (47) is connected to the top of the top plate (42) located on the right, and the secondary laser rangefinder (46) is flush with the secondary reflector (47); The side of the correction plate (45) close to the inner ring (1) of the wind turbine bearing is a curved surface structure; The ovality detection module (5) comprises a three-stage driver (51), a two-stage driving screw (52), a two-stage sleeve (53) and a circular hole (54); the three-stage driver (51) is arranged at the middle of a side opposite to the bottom plate (43) and the correction plate (45); the three-stage driver (51) is fixedly connected to the bottom plate (43) via a positioning bolt; the two-stage driving screw (52) is connected to the output end of the three-stage driver (51); the circular hole (54) is provided at the middle of a side of the correction plate (45) close to the bottom plate (43); the two-stage sleeve (53) is sleeved on one end of the two-stage driving screw (52) away from the three-stage driver (51); the two-stage sleeve (53) is threadedly connected to the two-stage driving screw (52); and one end of the two-stage sleeve (53) away from the two-stage driving screw (52) passes through the circular hole (54); The three-stage driver (51) is a servo motor; The ovality detection module (5) further comprises a contraction chamber (55), a primary assembly plate (56), a secondary assembly plate (57), a reset spring (58), a primary laser rangefinder (59), a primary reflector (510) and a roller (511); the contraction chamber (55) is arranged in the middle of a side of the correction plate (45) opposite to the inner ring (1) of the wind turbine bearing, and the contraction chamber (55) is connected to the circular hole (54); the primary assembly plate (56) is arranged in the contraction chamber (55), and the primary assembly plate (56) is connected to an end of the secondary sleeve (53) away from the secondary drive screw rod (52); the secondary assembly plate (57) is arranged on a side of the primary assembly plate (56) away from the secondary sleeve (53); and the reset spring (58) is arranged between the primary assembly plate (56) and the secondary assembly plate (57). The first assembly plate (56) and the second assembly plate (57) are connected at two ends of the return spring (58), and the two ends of the return spring (58) are respectively connected to the first assembly plate (56) and the second assembly plate (57), the first laser rangefinder (59) is arranged in the middle of the side opposite to the first assembly plate (56) and the second assembly plate (57), the first reflector (510) is arranged in the middle of the side opposite to the second assembly plate (57) and the first assembly plate (56), the first laser rangefinder (59) and the first reflector (510) are both inside the return spring (58), and the first laser rangefinder (59) and the first reflector (510) are flush with each other, the roller (511) is connected to the middle of the side of the second assembly plate (57) away from the first assembly plate (56), and a gap is left between the roller (511) and the correction plate (45); The four corners of the side opposite to the primary assembly plate (56) and the secondary assembly plate (57) are connected to a stabilizing sleeve (512); the inner wall of the end of the stabilizing sleeve (512) away from the primary assembly plate (56) is sleeved with a stabilizing rod (513); the outer wall of the stabilizing rod (513) and the inner wall of the stabilizing sleeve (512) are slidably matched; the end of the stabilizing rod (513) away from the stabilizing sleeve (512) is connected to the secondary assembly plate (57); and a gap is left between the stabilizing sleeve (512), the stabilizing rod (513) and the return spring (58).

2. The ellipticity correction device according to claim 1, characterized in that: The positioning module (2) further comprises a limiting sleeve (28) and a limiting rod (29), wherein the limiting rod (29) is symmetrically connected to the two sides above the placement column (21), the limiting sleeve (28) is sleeved on the end of the limiting rod (29) away from the placement column (21), and the end of the limiting sleeve (28) away from the limiting rod (29) is connected to the arc-shaped positioning plate (26).

3. The ellipticity correction device according to claim 1, characterized in that: The ovality detection module (5) further comprises a limiting notch (514) and a limiting plate (515); the limiting notch (514) is symmetrically arranged in the interior of the correction plate (45) in a front-to-back manner, and the limiting notch (514) is communicated with the contraction chamber (55); the limiting plate (515) is slidably fitted in the limiting notch (514), and the limiting plate (515) is symmetrically connected in the front-to-back manner to the middle of both sides of the primary assembly plate (56).

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