Stator and method for rounding a stator

Abstract

This invention discloses a stator and a method for adjusting the stator's circular shape. The stator includes a stator support plate, a stator block, a stator adjusting block, and a positioning element. Each stator block is equipped with a circular stator adjusting block. During the process of the positioning element being inserted into the corresponding positioning hole of the stator support plate and the adjusting hole of the stator adjusting block, the circular stator adjusting block pushes the stator block to move, making the positioning hole and the adjusting hole coaxial. After the positioning element is inserted into the corresponding positioning hole and adjusting hole, the circular stator adjusting block can rotate within the corresponding receiving hole. In addition to moving with the stator block as a whole, the circular stator adjusting block can also rotate itself. Through its own rotation, the position of the center of the adjusting hole of the circular stator adjusting block remains unchanged during the overall movement of the stator block. Even if the adjustment direction and / or adjustment amount on both sides of the stator block are inconsistent, the center of the adjusting hole of the circular stator adjusting block always corresponds to the center of the positioning hole on the stator support plate, thereby reducing the assembly stress on the stator.

Description

Technical Field

[0001] This invention relates to the field of stator modular assembly, and particularly to a stator and a method for adjusting the stator's roundness. Background Technology

[0002] Permanent magnet direct-drive wind turbines are large in diameter and weight. To facilitate assembly, impregnation, drying, and transportation, the stator of a permanent magnet direct-drive wind turbine is assembled in sections. For example... Figure 1 As shown, the stator includes a stator support plate 11 and multiple stator blocks 12. The multiple stator blocks 12 are arranged sequentially along the circumferential direction of the stator and are installed and fixed on the stator support plate 11.

[0003] Due to manufacturing and assembly errors, the roundness of the entire stator after assembling multiple stator blocks does not meet the air gap requirements of the permanent magnet direct-drive wind turbine. Therefore, it is necessary to adjust the radial position of the stator blocks to ensure the required roundness. Specifically, after assembling multiple stator blocks, the roundness of the stator is measured, and the adjustment amount in the radial direction of each stator block is determined. By replacing the stator adjustment block with one that has the corresponding adjustment amount, the radial position of the stator blocks is adjusted and positioned using locating pins, thereby adjusting the roundness of the stator. The adjusted stator blocks are then positioned again using locating pins, and finally clamped and fixed using bolts, nuts, and other fasteners.

[0004] A specific method for adjusting the circle of a stator in the prior art is as follows: Figure 2 and Figure 3 As shown, two symmetrical, waist-shaped stator adjusting blocks 13 are installed on the stator block 12. The center line a of the two stator adjusting blocks 13 is parallel to the center line b of the stator block 12. After determining the adjustment amount of the stator block 12, a new stator adjusting block 13 with the corresponding adjustment amount is replaced, and the stator block 12 is driven to move along the center line b of the stator block 12, so that the adjusting hole 131 on the stator adjusting block 13 is aligned with the positioning hole 111 on the stator support plate 11, thereby realizing the adjustment of the stator block 12. Since the distance between the two positioning holes 111 on the stator support plate 11 remains constant, in order to ensure that the center distance between the adjusting holes of the two stator adjusting blocks 13 is equal to the distance between the two positioning holes 111, the adjustment amount and adjustment direction of the two stator adjusting blocks 13 need to be the same, thereby reducing the assembly stress on the stator support plate 11, stator block 12, stator adjusting block 13, and positioning pin.

[0005] However, in actual assembly, the adjustment direction and amount on both sides of the stator block are basically inconsistent. If the adjustment amount and direction of the two stator adjustment blocks are completely consistent, the locating pins and other structures will be subjected to significant tangential assembly forces. Furthermore, stator rounding is generally not achieved in one step but requires multiple rounding operations. Only by using a pin puller to remove the stator adjustment block and replace it with a new one can this be achieved. However, due to the assembly stress, the pin puller requires a great deal of force to remove the stator adjustment block, often resulting in damage to the puller itself. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to overcome the defect in the prior art that the adjustment direction and / or adjustment amount on both sides of the stator block are inconsistent, which will cause the adjustment hole of the stator adjustment block to not correspond with the positioning hole of the stator support plate, thus causing the stator to be subjected to excessive assembly stress. The present invention provides a stator and a method for adjusting the roundness of the stator.

[0007] The present invention solves the above-mentioned technical problems through the following technical solution:

[0008] A stator includes a stator support plate, a plurality of stator blocks arranged sequentially along the circumference of the stator, a plurality of stator adjusting blocks, and a plurality of positioning members. The stator support plate and the stator adjusting blocks are respectively installed at both axial ends of the stator blocks. A first stator adjusting block and a second stator adjusting block are respectively installed on both circumferential sides of each stator block. Each stator block has a first receiving hole matching the first stator adjusting block and a second receiving hole matching the second stator adjusting block. The first stator adjusting block and the second stator adjusting block are respectively received in the first receiving hole and the second receiving hole. The stator support plate has a plurality of positioning holes extending along the stator axial direction. The stator adjusting blocks have adjusting holes extending along the stator axial direction. The first stator adjusting block is a circular stator adjusting block. The circular stator adjusting block pushes the stator block to move during the process of the positioning members being inserted into the corresponding positioning holes and adjusting holes, so that the positioning holes and adjusting holes are coaxial. Furthermore, the circular stator adjusting block can rotate within the corresponding first receiving hole after the positioning members are inserted into the corresponding positioning holes and adjusting holes.

[0009] In this solution, the relative position of the stator block on the stator support plate is determined by aligning the adjustment holes of the stator adjustment block with the positioning holes of the stator support plate. Positioning components are used to fix the relative positions of the stator support plate, stator block, and stator adjustment block, preventing movement of these components in the radial and circumferential directions of the stator, thus improving the accuracy of measuring and adjusting stator roundness. Traditional oblong stator adjustment blocks are structurally limited and cannot rotate within their receiving holes. Therefore, the overall movement of the stator block causes all oblong stator adjustment blocks on it to move synchronously. During the rounding process, the center of the adjustment hole of the oblong stator adjustment block will inevitably move. Inconsistent adjustment directions and / or amounts on both sides of the stator block's circumference will cause the center of the adjustment hole of the oblong stator adjustment block to misalign with the center of the positioning hole on the stator support plate, resulting in excessive assembly stress on the stator and making it more susceptible to damage. In addition to moving with the stator block as a whole, the circular stator adjusting block can also rotate. By rotating itself, the position of the center of the adjusting hole of the circular stator adjusting block remains unchanged during the movement of the stator block as a whole. Even if the adjustment direction and / or adjustment amount on both sides of the stator block are inconsistent, the center of the adjusting hole of the circular stator adjusting block will always correspond to the center of the positioning hole on the stator support plate, thereby reducing the assembly stress on the stator.

[0010] Preferably, the centers of the first receiving hole and the second receiving hole are symmetrical about the center line of the stator block.

[0011] In this scheme, since the stator block itself is usually a symmetrical structure, the above settings can ensure that the various structures in the stator are subjected to uniform stress and improve the service life of the stator.

[0012] Preferably, the second stator adjusting block is a waist-shaped stator adjusting block, and the center line of the waist-shaped stator adjusting block passes through the center point of the stator.

[0013] Preferably, the positioning element is a positioning pin, and the stator support plate, the stator block, and the stator adjusting block are rotatably connected and positioned by the positioning pin.

[0014] In this solution, the positioning pin can fix the relative positions of the stator support plate, stator block and stator adjusting block without restricting the relative rotation between the three, thus improving the feasibility of achieving inconsistent adjustment directions and / or adjustment amounts on both sides of the stator block in the circumferential direction.

[0015] Preferably, the stator adjusting block has a positioning boss, the cross-sectional dimension of which is larger than the diameter of the receiving hole, and the positioning boss abuts against the side of the stator block away from the stator support plate in the stator axial direction.

[0016] In this design, the positioning boss is used to achieve axial positioning of the stator adjusting block relative to the stator block, which facilitates the positioning and installation of the stator adjusting block on the stator block and improves installation efficiency.

[0017] A method for adjusting the roundness of a stator, the method being used to adjust the roundness of a stator as described above, the method comprising the following steps:

[0018] Step S1: Measure the roundness of the stator and determine the adjustment amount of each stator block;

[0019] Step S2: Select the first stator adjustment block and the second stator adjustment block with corresponding adjustment amounts according to the adjustment amount of the stator block; wherein, the adjustment amount is the distance between the center point of the stator adjustment block and the center of the corresponding adjustment hole;

[0020] Step S3: Insert the positioning member into the adjustment hole of the first stator adjusting block and the corresponding positioning hole of the stator support plate. During the insertion of the positioning member, the first stator adjusting block pushes the stator block to move so that the positioning hole and the adjustment hole of the first stator adjusting block are coaxial.

[0021] Step S4: Insert the positioning member into the adjustment hole and the corresponding positioning hole of the second stator adjusting block. During the insertion of the positioning member, the first stator adjusting block rotates in the first receiving hole.

[0022] Step S5: Repeat steps S2-S4 until the adjustment of all the stator blocks is completed.

[0023] In this scheme, the adjustment amount of each stator block in the radial direction of the stator is first determined by measuring the roundness of the stator, and a suitable stator adjustment block is selected according to the adjustment amount. Since the change in adjustment amount is reflected in the distance between the center point of the stator adjustment block and the center of the corresponding adjustment hole, the stator block can be adjusted by re-aligning the adjustment hole of the stator adjustment block with the positioning hole of the corresponding stator support plate. The roundness adjustment process is simple and convenient, with high efficiency and accuracy.

[0024] Preferably, the stator support plate has a first positioning hole corresponding to the first stator adjusting block and a second positioning hole corresponding to the second stator adjusting block;

[0025] In step S3, the center A of the adjustment hole of the first stator adjustment block is located at the intersection of the first arc and the second arc;

[0026] The first arc is an arc with the center P of the second positioning hole as the center and the distance PQ between the center Q of the first positioning hole and the center P of the second positioning hole as the radius;

[0027] The second arc is an arc formed with the center Q of the first positioning hole as the center and the adjustment amount of the first stator adjusting block as the radius.

[0028] In this scheme, when the first stator adjusting block with the adjustment amount is just placed into the first receiving hole, the center point C of the first stator adjusting block corresponds to the center Q of the first positioning hole. The above setting ensures that the distance PA between the center P of the second positioning hole and the center A of the adjusting hole of the first stator adjusting block is equal to the distance PQ between the center Q of the first positioning hole and the center P of the second positioning hole, and also ensures the value of the adjustment amount.

[0029] Preferably, in step S3, during the adjustment of the first stator adjusting block, the movement trajectory of the center A of the adjusting hole is on the first circular arc.

[0030] In this scheme, the center A of the adjustment hole of the first stator adjustment block moves along the above trajectory to ensure that the distance PA between the center P of the second positioning hole and the center A of the adjustment hole of the first stator adjustment block is always equal to the distance PQ between the center Q of the first positioning hole and the center P of the second positioning hole, thereby reducing the assembly stress on the stator.

[0031] Preferably, the second stator adjusting block is a waist-shaped stator adjusting block, and the center line of the waist-shaped stator adjusting block passes through the center point of the stator;

[0032] During the adjustment of the second stator adjusting block, the movement trajectory of the center B of the adjusting hole of the second stator adjusting block is on the center line of the second stator adjusting block.

[0033] Preferably, during the adjustment of the second stator adjusting block, the first stator adjusting block rotates within the first receiving hole with the center A of the adjusting hole as the rotation center.

[0034] In this scheme, during the adjustment of the second stator adjusting block, the stator block as a whole will move, which will cause the first stator adjusting block installed on the stator block to move accordingly. Through the rotation of the first stator adjusting block in the first receiving hole, the position of the center A of the adjusting hole of the first stator adjusting block relative to the stator support plate remains unchanged while the first stator adjusting block moves with the stator block as a whole.

[0035] Preferably, the motion trajectory of the center point C of the first stator adjusting block is on the second circular arc.

[0036] In this scheme, the center point C of the first stator adjusting block moves along the above trajectory, which ensures that the distance between the center point A of the adjusting hole of the first stator adjusting block and the center point C of the first stator adjusting block remains unchanged without moving the center A of the adjusting hole of the first stator adjusting block, thereby reducing the assembly stress on the first stator adjusting block.

[0037] Preferably, in step S1, the roundness of the stator is measured after all stator blocks have been mounted on the stator support plate.

[0038] In this scheme, the roundness of the stator is measured only after all stator blocks have been installed. This prevents interference with the already rounded stator blocks when installing other positioning blocks, thereby improving the efficiency and accuracy of stator rounding.

[0039] The significant advantages of this invention are as follows: This invention determines the relative position of the stator block on the stator support plate by aligning the adjustment hole of the stator adjustment block with the positioning hole of the stator support plate. The positioning element is used to fix the relative positions of the stator support plate, stator block, and stator adjustment block, preventing movement of the stator support plate, stator block, and stator adjustment block in the radial and circumferential directions of the stator, thus improving the accuracy of measuring and adjusting stator roundness. The adjustment hole is located within the receiving hole, ensuring that even if the position of the adjustment hole on the stator adjustment block changes, the relative positions of the stator support plate, stator block, and stator adjustment block can still be fixed by the positioning element passing through the adjustment hole of the stator adjustment block and the positioning hole of the stator support plate, improving the feasibility of achieving stator roundness adjustment by replacing the stator adjustment block. In addition to moving with the stator block as a whole, the circular stator adjusting block can also rotate. By rotating itself, the position of the center of the adjusting hole of the circular stator adjusting block remains unchanged during the movement of the stator block as a whole. Even if the adjustment direction and / or adjustment amount on both sides of the stator block are inconsistent, the center of the adjusting hole of the circular stator adjusting block will always correspond to the center of the positioning hole on the stator support plate, thereby reducing the assembly stress on the stator. Attached Figure Description

[0040] Figure 1 This is a top view of the stator structure in the prior art.

[0041] Figure 2 This is a top view of the stator support plate in the prior art.

[0042] Figure 3 This is a top view of the stator block in the prior art.

[0043] Figure 4 This is a top view of the stator structure according to an embodiment of the present invention.

[0044] Figure 5This is a top view of the stator block according to an embodiment of the present invention.

[0045] Figure 6 This is a cross-sectional view of the stator according to an embodiment of the present invention.

[0046] Figure 7 This is a top view of the stator block according to an embodiment of the present invention.

[0047] Figure 8 This is a schematic flowchart of a stator rounding method according to an embodiment of the present invention.

[0048] Figure 9 This is a top view of the first stator adjustment block according to an embodiment of the present invention.

[0049] Figure 10 This is a top view of the stator block in an embodiment of the present invention, showing the replacement of the first stator adjustment block.

[0050] Figure 11 This is a schematic diagram of the positioning of the first stator adjustment block on the stator according to an embodiment of the present invention.

[0051] Figure 12 This is a top view of the second stator adjustment block according to an embodiment of the present invention.

[0052] Figure 13 This is a top view of the stator block in an embodiment of the present invention, showing the replacement of the second stator adjustment block.

[0053] Figure 14 This is a schematic diagram of the positioning of the second stator adjustment block on the stator according to an embodiment of the present invention.

[0054] Figure 15 This is a schematic diagram of the motion trajectory of the first stator adjusting block according to an embodiment of the present invention.

[0055] Figure 16 This is a schematic diagram of the motion trajectory of the second stator adjusting block according to an embodiment of the present invention.

[0056] Explanation of reference numerals in prior art drawings:

[0057] Stator support plate 11

[0058] Positioning hole 111

[0059] Stator Block 12

[0060] Stator Adjustment Block 13

[0061] Adjustment hole 131

[0062] Explanation of reference numerals in the accompanying drawings:

[0063] Stator support plate 2

[0064] Positioning hole 21

[0065] Stator Block 3

[0066] First receiving hole 31

[0067] Second receiving hole 32

[0068] First stator adjusting block 41

[0069] Second stator adjusting block 42

[0070] Adjustment hole 51

[0071] Positioning boss 52

[0072] Positioning pin 6

[0073] First arc 71

[0074] Second arc 72 Detailed Implementation

[0075] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments.

[0076] This embodiment provides a stator, such as Figures 4-7 As shown, the stator includes a stator support plate 2, multiple stator blocks 3, multiple stator adjusting blocks, and multiple positioning elements. The multiple stator blocks 3 are arranged sequentially along the circumference of the stator and are all fixed on the stator support plate 2. The stator adjusting blocks are fixed on the stator blocks 3. The positioning elements pass through the stator support plate 2, stator blocks 3, and stator adjusting blocks to fix the relative positions of the three in the radial and circumferential directions of the stator, thereby improving the accuracy of measuring and adjusting the roundness of the stator.

[0077] like Figure 6 and Figure 7 As shown, the stator support plate 2 and the stator adjusting block are respectively installed at both ends of the stator block 3 along the axial direction. The stator block 3 has a receiving hole for accommodating the stator adjusting block. The receiving hole is a through hole extending along the stator axial direction. The stator adjusting block is accommodated in the receiving hole, and the outer surface of the stator adjusting block is tightly fitted with the inner wall surface of the receiving hole, which facilitates the rapid positioning of the stator adjusting block on the stator block 3. The stator support plate 2 has multiple positioning holes 21 extending along the stator axial direction, and the stator adjusting block has an adjusting hole 51 extending along the stator axial direction. The positioning holes 21 and the adjusting hole 51 are coaxial.

[0078] In this embodiment, the relative position of the stator block 3 on the stator support plate 2 is determined by aligning the adjustment hole 51 of the stator adjustment block with the positioning hole 21 of the stator support plate 2. The stator adjustment block is located within the receiving hole. Even if the position of the adjustment hole 51 of different stator adjustment blocks changes, the relative position of the stator support plate 2, stator block 3, and stator adjustment block can still be fixed by using a positioning element that aligns the adjustment hole 51 of the stator adjustment block with the positioning hole 21 of the stator support plate 2. This improves the feasibility of achieving stator rounding by replacing the stator adjustment block.

[0079] Traditional waist-shaped stator adjusting blocks are limited by their structure and can only move along their central axis, not rotate. Therefore, to achieve the overall movement of stator block 3, all waist-shaped stator adjusting blocks on stator block 3 must move accordingly. During the stator rounding process, if the adjustment direction and / or adjustment amount on both sides of stator block 3 are inconsistent, the center of the adjustment hole of at least one waist-shaped stator adjusting block will not correspond to the center of the positioning hole on stator support plate 2, resulting in excessive assembly stress on the stator and making the stator more prone to damage.

[0080] like Figure 4 As shown, in this embodiment, a first stator adjusting block 41 and a second stator adjusting block 42 are respectively installed on both sides of the circumference of each stator adjusting block. Each stator block has a first receiving hole 31 that matches the first stator adjusting block 41 and a second receiving hole 32 that matches the second stator adjusting block 42. The first stator adjusting block 41 and the second stator adjusting block 42 are respectively received in the first receiving hole 31 and the second receiving hole 32. The first stator adjusting block 41 is a circular stator adjusting block. During the process of the positioning member being inserted into the corresponding positioning hole 21 and adjusting hole 51, the circular stator adjusting block pushes the stator block 3 to move so that the positioning hole 21 and adjusting hole 51 are coaxial. Furthermore, after the positioning member is inserted into the corresponding positioning hole 21 and adjusting hole 51, the circular stator adjusting block can rotate within the corresponding first receiving hole 31. The circular stator adjusting block rotates so that even if the adjustment direction and / or adjustment amount on both sides of the stator block 3 are inconsistent during the overall movement of the stator block 3, the center of the adjusting hole of the circular stator adjusting block always corresponds to the center of the positioning hole on the stator support plate 2, thereby reducing the assembly stress on the stator.

[0081] Since stator block 3 itself is usually a symmetrical structure, such as Figure 5 As shown, the centers of the first receiving hole 31 and the second receiving hole 32 are symmetrical about the center line m of the stator block 3, which ensures that the various structures in the stator are subjected to uniform stress and improves the service life of the stator. The center line m of the stator block 3 passes through the center point of the stator.

[0082] like Figure 5As shown, the second stator adjusting block 42 is a waist-shaped stator adjusting block. In the initial state, the center line n of the waist-shaped stator adjusting block passes through the center point of the stator. In this embodiment, the initial state is that the stator sub-block 3 is initially fixed on the stator support plate 2, and the rounding operation has not yet been performed.

[0083] like Figure 6 As shown, in this embodiment, the positioning component is a positioning pin 6. The stator support plate 2, stator block 3, and stator adjusting block are rotatably connected and positioned by the positioning pin 6. While fixing the relative positions of the stator support plate 2, stator block 3, and stator adjusting block, the positioning pin 6 does not restrict the relative rotation between the three during the adjustment process, thereby enabling the first stator adjusting block 41 to rotate within the first receiving hole 31.

[0084] like Figure 6 As shown, the stator adjusting block also has a positioning boss 52. The cross-sectional dimension of the positioning boss 52 is larger than the diameter of the corresponding receiving hole. The positioning boss 52 abuts against the side of the stator block 3 away from the stator support plate 2 in the stator axial direction. The positioning boss 52 is used to realize the axial positioning of the stator adjusting block relative to the stator block 3, which facilitates the positioning and installation of the stator adjusting block on the stator block 3 and improves the installation efficiency.

[0085] This embodiment also provides a method for adjusting the roundness of a stator, which is used to adjust the roundness of the stator as described above. Figure 8 As shown, the method for adjusting the stator to a round shape includes the following steps:

[0086] Step S1: Measure the roundness of the stator and determine the adjustment amount of each stator block 3;

[0087] Step S2: Based on the adjustment amount of stator block 3, select the first stator adjustment block 41 and the second stator adjustment block 42 with corresponding adjustment amounts; the adjustment amount is the distance between the center point of the stator adjustment block and the center of the corresponding adjustment hole.

[0088] Step S3: Insert the positioning element into the adjustment hole 51 of the first stator adjustment block 41 and the corresponding positioning hole 21 of the stator support plate 2. During the insertion of the positioning element, the first stator adjustment block 41 pushes the stator block 3 to move so that the positioning hole 21 and the adjustment hole 51 of the first stator adjustment block 41 are coaxial.

[0089] Step S4: Insert the positioning element into the adjustment hole 51 and the corresponding positioning hole 21 of the second stator adjustment block 42. During the insertion of the positioning element, the first stator adjustment block 41 rotates in the first receiving hole 31.

[0090] Step S4: Repeat steps S2-S4 until all stator blocks 3 have been adjusted.

[0091] First, the adjustment amount of each stator block 3 is determined by measuring the roundness of the stator, and then a suitable stator adjustment block is selected based on the adjustment amount. The change in adjustment amount is reflected in the distance between the center point of the stator adjustment block and the center of the corresponding adjustment hole. Therefore, the adjustment of the stator block 3 can be achieved by re-aligning the adjustment hole 51 of the stator adjustment block with the positioning hole 21 of the corresponding stator support plate 2. The roundness adjustment process is simple and convenient, with high efficiency and accuracy. The method for measuring the adjustment amount of the stator block 3 is prior art in this field and will not be elaborated here.

[0092] The stator support plate 2 has a first positioning hole corresponding to the first stator adjusting block 41 and a second positioning hole corresponding to the second stator adjusting block 42. During the stator adjustment process, the first stator adjusting block 41 and the second stator adjusting block 42 are adjusted separately, thereby ensuring that the two processes do not interfere with each other and improving the adjustment efficiency.

[0093] like Figures 9-11 As shown, when the first stator adjustment block 41 with adjustment amount is just placed into the first receiving hole 31, the center point C of the first stator adjustment block 41 corresponds to the center Q of the first positioning hole. In this embodiment, the correspondence between the center point C of the first stator adjustment block 41 and the center Q of the first positioning hole means that the line connecting the center point C of the first stator adjustment block 41 and the center Q of the first positioning hole is parallel to the axis of the stator.

[0094] In step S3, the center A of the adjustment hole of the first stator adjusting block 41 is located at the intersection of the first arc 71 and the second arc 72. The first arc 71 is an arc with the center P of the second positioning hole as its center and the distance PQ between the center Q of the first positioning hole and the center P of the second positioning hole as its radius. The second arc 72 is an arc with the center Q of the first positioning hole as its center and the adjustment amount of the first stator adjusting block 41 as its radius. This ensures that the distance PA between the center P of the second positioning hole and the center A of the adjustment hole of the first stator adjusting block 41 is equal to the distance PQ between the center Q of the first positioning hole and the center P of the second positioning hole, and also ensures the value of the adjustment amount.

[0095] like Figure 11 As shown, in step S3, during the adjustment of the first stator adjusting block 41, the movement trajectory of the center A of the adjusting hole of the first stator adjusting block 41 is on the first arc 71, ensuring that the distance PA between the center P of the second positioning hole and the center A of the adjusting hole of the first stator adjusting block 41 can always be equal to the distance PQ between the center Q of the first positioning hole and the center P of the second positioning hole, thereby reducing the assembly stress on the stator.

[0096] like Figures 12-14As shown, during the adjustment of the second stator adjusting block 42, the movement trajectory of the center B of the adjusting hole of the second stator adjusting block 42 is on the center line of the second stator adjusting block 42, and the first stator adjusting block 41 rotates within the first receiving hole 31 with the center A of the adjusting hole as the rotation center. During this process, the entire stator block 3 undergoes both translation and rotation.

[0097] During the adjustment of the second stator adjusting block 42, the stator block 3 as a whole will move, which will cause the first stator adjusting block 41 installed on the stator block 3 to move accordingly. In addition to being able to follow the overall movement of the stator block 3, the first stator adjusting block 41 can also rotate around its adjusting hole center A in the first receiving hole 31. Therefore, the position of the adjusting hole center A of the first stator adjusting block 41 relative to the stator support plate 2 remains unchanged.

[0098] During the process of adjusting the second stator adjusting block 42 to drive the stator block 3 to move as a whole, the first stator adjusting block 41 also moves along with the stator block 3. Therefore, the position of the center A of the first stator adjusting block 41 remains unchanged, while its center point C also moves accordingly. The trajectory of the center point C of the first stator adjusting block 41 is on the second arc 72. The center point C of the first stator adjusting block 41 moves along the above trajectory, which ensures that the distance between the center A of the adjusting hole of the first stator adjusting block 41 and the center point C of the first stator adjusting block 41 remains constant without moving the center A of the adjusting hole of the first stator adjusting block 41, thereby reducing the assembly stress on the first stator adjusting block 41.

[0099] Before step S1, step S0 is included: installing the stator adjustment block with an adjustment amount of 0 onto the stator block 3, and connecting the positioning hole 21 and the corresponding adjustment hole 51 through a positioning component. This serves two purposes: firstly, it fixes the relative positions of the stator support plate 2, stator block 3, and stator adjustment block before measuring the roundness of the stator, preventing positional shifts during the measurement process; secondly, it ensures that during the measurement of stator roundness, the center point of the old stator adjustment block corresponds to the center of the positioning hole 21, and the distance between the center of the adjustment hole of the stator adjustment block and the center point of the stator adjustment block is indeed the adjustment amount.

[0100] In step S3, before removing the old stator adjusting block, the positioning member is first removed; after the new stator adjusting block is installed, the positioning member is inserted to make the adjusting hole 51 of the new stator adjusting block coaxial with the corresponding positioning hole 21.

[0101] Furthermore, in step S1, the roundness of the stator is measured after all stator blocks 3 have been installed on the stator support plate 2. Measuring the roundness of the stator after all stator blocks 3 have been installed prevents interference with the already fully rounded stator blocks 3 when installing other positioning blocks, thereby improving the efficiency and accuracy of stator rounding.

[0102] The following describes the process of adjusting the outer roundness of the stator as an example, combining the stator structure and the stator adjustment method described above. The other stator blocks 3 in the stator can be adjusted using the following stator block 3 adjustment method so that the overall outer roundness of the stator meets the air gap requirements.

[0103] like Figure 5 and Figure 7 As shown, two stator adjusting blocks, both with an adjustment range of 0, are installed on the stator block 3. These are a first stator adjusting block 41 located on the right side of the stator block 3's circumference and a second stator adjusting block 42 located on the left side of the stator block 3's circumference. The first stator adjusting block 41 is housed within the first receiving hole 31 of the stator block 3, and the second stator adjusting block 42 is housed within the second receiving hole 32 of the stator block 3. The centerline n of the second stator adjusting block 42 passes through the center point of the stator. The outer surfaces of the two stator adjusting blocks are tightly fitted to the inner walls of their respective receiving holes. The line connecting the center point D of the second stator adjusting block 42 and the center B of the second adjusting hole is always parallel to the centerline n (e.g., ...). Figure 14 ).

[0104] The process of adjusting the stator block 3: First, the first stator adjusting block 41 and the second stator adjusting block 42, with an adjustment amount of 0, are installed on the stator block 3. The relative positions of the stator support plate 2, stator block 3, and stator adjusting blocks in the radial and circumferential directions are fixed by the positioning pin 6. Then, the outer roundness of the actual stator block 3 is measured using a measuring system. The measurement results are compared with the theoretical outer roundness of the stator block 3 to determine the adjustment amount of each stator block 3. Then, the first stator adjusting block 41 and the second stator adjusting block 42 with corresponding adjustment amounts are selected. The adjustment amount on the right side of the stator block 3 is an inward adjustment δ1, and the adjustment amount on the left side of the stator block 3 is an outward adjustment δ2, i.e., as shown... Figure 9 and Figure 12 As shown, the distance between the center point of the first stator adjusting block 41 and the center of the adjusting hole of the first stator adjusting block 41 is δ1, and the distance between the center point of the second stator adjusting block 42 and the center of the adjusting hole of the second stator adjusting block 42 is δ2. The measurement system belongs to the prior art in this field and will not be described in detail here.

[0105] like Figure 15 As shown, the right side of the stator block 3 is first rounded. The first stator adjusting block 41 with an adjustment amount of 0 and the corresponding positioning pin 6 are pulled out using a pin puller. A new first stator adjusting block 41 with an adjustment amount of δ1 is then placed into the first receiving hole 31 of the stator block 3. At this time, the center point C of the new first stator adjusting block 41 corresponds to the center Q of the first positioning hole of the stator support plate 2, and the distance between the center A of the adjusting hole and the center point C of the first stator adjusting block 41 is δ1.

[0106] During the installation of the new first stator adjusting block 41, the direction of the stator adjusting block 41 should be controlled so that the center A of the adjusting hole is located at the intersection of the first arc 71 and the second arc 72.

[0107] Insert the positioning pin 6 into the adjustment hole 51 and the first positioning hole of the first stator adjusting block 41. Since the front end of the positioning pin 6 is conical, during the insertion process, the stator block 3 rotates gradually with the center P of the second positioning hole as the center, pushing the right side of the stator block 3 towards the radial inward side of the stator, so that the center A of the adjustment hole moves to point A', and the center point C of the first stator adjusting block 41 moves to point C'. Point A' corresponds to the center Q of the first positioning hole of the stator support plate 2. At this point, the positioning pin 6 is fully inserted, and the positions of the stator support plate 2, the stator block 3, and the stator adjusting block are relatively fixed. During this process, the second stator adjusting block 42, located on the left side of the stator block 3, rotates radially outward along with the entire stator block 3. Figure 13 (in the clockwise direction), the center line n of the second stator adjusting block 42 no longer passes through the center point of the stator. The center line n is re-determined according to the direction of the line connecting the center point D of the second stator adjusting block 42 and the center B of the second adjusting hole.

[0108] During the rotation of the stator block 3, the movement trajectory of the center A of the adjusting hole is on the first circular arc 71.

[0109] like Figure 16 As shown, the left side of the stator block 3 is then rounded. The second stator adjusting block 42 with an adjustment amount of 0 and its corresponding positioning pin 6 are pulled out using a pin puller. A new second stator adjusting block 42 with an adjustment amount of δ2 is then placed into the second receiving hole 32 of the stator block 3. At this time, the center point D of the new second stator adjusting block 42 corresponds to the center P of the second positioning hole of the stator support plate 2, and the distance between the center B of the adjusting hole of the second stator adjusting block 42 and the center point D of the second stator adjusting block 42 is δ2.

[0110] The positioning pin 6 is inserted into the adjustment hole 51 and the second positioning hole of the second stator adjusting block 42. Since the front end of the positioning pin 6 is conical, during the insertion process, the left side of the stator block 3 moves radially outward along the center line of the second stator block 3, causing the center B of the second adjustment hole to move to point B', and the center point D of the second stator adjusting block 42 to move to point D'. Point B' corresponds to the center P of the second positioning hole of the stator support plate 2. Thus, the relative positions of the stator support plate 2, the stator block 3, and the second stator adjusting block 42 are fixed. During the movement of the stator block 3, in addition to the overall movement of the stator block 3, the first stator adjusting block 41 will rotate within the first receiving hole 31 around the center A of the adjustment hole. The center point C of the first stator adjusting block 41 moves from point C' to point C'', and the trajectory of the center point C of the first stator adjusting block 41 is on the second arc 72.

[0111] In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention, unless otherwise stated in the text.

[0112] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. A stator, comprising a stator support plate, a plurality of stator blocks arranged sequentially along the circumference of the stator, a plurality of stator adjusting blocks, and a plurality of positioning elements, wherein the stator support plate and the stator adjusting blocks are respectively mounted at both axial ends of the stator blocks, characterized in that, Each stator block has a first stator adjusting block and a second stator adjusting block installed on its circumferential sides. Each stator block has a first receiving hole matching the first stator adjusting block and a second receiving hole matching the second stator adjusting block. The first stator adjusting block and the second stator adjusting block are respectively received in the first receiving hole and the second receiving hole. The stator support plate has a plurality of positioning holes extending along the stator axial direction. The stator adjusting block has an adjusting hole extending along the stator axial direction. The first stator adjusting block is a circular stator adjusting block. The circular stator adjusting block pushes the stator block to move during the process of the positioning member being inserted into the corresponding positioning hole and the adjusting hole, so that the positioning hole and the adjusting hole are coaxial. Furthermore, the circular stator adjusting block can rotate within the corresponding first receiving hole after the positioning member is inserted into the corresponding positioning hole and the adjusting hole.

2. The stator as described in claim 1, characterized in that, The centers of the first and second receiving holes are symmetrical about the center line of the stator block.

3. The stator as described in claim 1, characterized in that, The second stator adjusting block is a waist-shaped stator adjusting block, and the center line of the waist-shaped stator adjusting block passes through the center point of the stator.

4. The stator as described in claim 1, characterized in that, The positioning component is a positioning pin, and the stator support plate, the stator block, and the stator adjusting block are rotatably connected and positioned by the positioning pin.

5. The stator as described in claim 1, characterized in that, The stator adjusting block has a positioning boss, the cross-sectional dimension of which is larger than the diameter of the receiving hole, and the positioning boss abuts against the side of the stator block away from the stator support plate in the stator axial direction.

6. A method for adjusting the roundness of a stator, characterized in that, The stator rounding method is used to adjust the roundness of the stator as described in claim 1, and the stator rounding method includes the following steps: Step S1: Measure the roundness of the stator and determine the adjustment amount of each stator block; Step S2: Select the first stator adjustment block and the second stator adjustment block with corresponding adjustment amounts according to the adjustment amount of the stator block; wherein, the adjustment amount is the distance between the center point of the stator adjustment block and the center of the corresponding adjustment hole; Step S3: Insert the positioning member into the adjustment hole of the first stator adjusting block and the corresponding positioning hole of the stator support plate. During the insertion of the positioning member, the first stator adjusting block pushes the stator block to move so that the positioning hole and the adjustment hole of the first stator adjusting block are coaxial. Step S4: Insert the positioning member into the adjustment hole and the corresponding positioning hole of the second stator adjusting block. During the insertion of the positioning member, the first stator adjusting block rotates in the first receiving hole. Step S5: Repeat steps S2-S4 until the adjustment of all the stator blocks is completed.

7. The method for adjusting the stator circle as described in claim 6, characterized in that, The stator support plate has a first positioning hole corresponding to the first stator adjusting block and a second positioning hole corresponding to the second stator adjusting block; In step S3, the center A of the adjustment hole of the first stator adjustment block is located at the intersection of the first arc and the second arc; The first arc is an arc with the center P of the second positioning hole as the center and the distance PQ between the center Q of the first positioning hole and the center P of the second positioning hole as the radius; The second arc is an arc formed with the center Q of the first positioning hole as the center and the adjustment amount of the first stator adjusting block as the radius.

8. The method for adjusting the roundness of the stator as described in claim 7, characterized in that, In step S3, during the adjustment of the first stator adjusting block, the movement trajectory of the center A of the adjusting hole is on the first circular arc.

9. The method for adjusting the roundness of the stator as described in claim 7, characterized in that, The second stator adjusting block is a waist-shaped stator adjusting block, and the center line of the waist-shaped stator adjusting block passes through the center point of the stator; During the adjustment of the second stator adjusting block, the movement trajectory of the center B of the adjusting hole of the second stator adjusting block is on the center line of the second stator adjusting block.

10. The method for adjusting the roundness of the stator as described in claim 9, characterized in that, During the adjustment of the second stator adjusting block, the first stator adjusting block rotates within the first receiving hole with the center A of the adjusting hole as the rotation center.

11. The method for adjusting the roundness of the stator as described in claim 10, characterized in that, The trajectory of the center point C of the first stator adjustment block lies on the second circular arc.

12. The method for adjusting the stator to a circular shape as described in any one of claims 6-11, characterized in that, In step S1, the roundness of the stator is measured after all stator blocks are installed on the stator support plate.

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