A flange centering device for a shaft-holding type permanent magnet shaft generator and a centering method thereof

Abstract

This application discloses a flange alignment device and method for a shaft-mounted permanent magnet shaft-driven generator, belonging to the technical field of shipbuilding. The shaft-mounted permanent magnet shaft-driven generator flange alignment device includes a base, a base plate, a positioning screw, and a positioning pin. The base is used to clamp onto the central shaft, the base plate is connected to the base, and the positioning screw is inserted into the positioning hole of the shaft flange. The positioning screw is rotatably mounted on the base plate. The positioning pin is sequentially inserted into the first connecting hole of the shaft flange and the second connecting hole of the rotor flange. The positioning pin is mounted on the base plate. There are at least two base plates, one-to-one corresponding positioning screws, and positioning pins, and multiple base plates are spaced apart circumferentially along the base. This application can improve the flange installation efficiency of shaft-mounted permanent magnet shaft-driven generators.

Description

Technical Field

[0001] This application relates to the technical field of shipbuilding, and in particular to a flange alignment device and method for a permanent magnet shaft-driven generator. Background Technology

[0002] When assembling existing permanent magnet shaft-driven generators, the rotor flange of the generator must first be aligned with the shaft flange on the central shaft, and then connected using connecting bolts and nuts. During the alignment of the rotor flange and shaft flange, the central shaft needs to be lifted using a crane or hoist in the workshop, and then installed by slowly moving the central shaft. On the ship, adjusting bolts are used to adjust the position of the shaft-driven generator so that all the second connection holes of the rotor flange are aligned with all the first connection holes of the shaft flange. Finally, the connecting bolts are installed one by one.

[0003] Because the rotor flange of the motor is located in the middle of the rotor inside the shaft, it is not easy to observe the relative position of the rotor flange and the shaft flange. At the same time, the shaft flange has a positioning shoulder, and the shoulder of the rotor flange needs to be fitted onto the shoulder of the shaft flange. The fit is highly precise, and it is difficult to match them accurately in one go. When installing the connecting bolts one by one, repeated attempts and adjustments are required to align the rotor flange and the shaft flange, align the shoulder of the rotor flange with the shoulder of the shaft flange, and align all the second connecting holes of the rotor flange with all the first connecting holes of the shaft flange. This process requires the cooperation of multiple people. Therefore, the flange installation of the existing fixed-shaft permanent magnet generator is difficult to align, time-consuming, and has low installation efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a flange alignment device and method for a permanent magnet shaft-driven generator, which can solve the above-mentioned problems existing in the prior art.

[0005] To achieve the above objectives, this application adopts the following technical solution:

[0006] On the one hand, a flange alignment device for a permanent magnet shaft-driven generator is provided, comprising: Base, used for fitting onto the central shaft; The substrate is connected to the base; A positioning screw is used to be inserted into the positioning hole of the shaft flange; the positioning screw is rotatably mounted on the base plate; as well as A positioning pin is used to be sequentially inserted into the first connecting hole of the shaft flange and the second connecting hole of the rotor flange; the positioning pin is mounted on the base plate. The substrate, the positioning screw, and the positioning pin are all in at least two pairs and correspond one-to-one, and multiple substrates are arranged at intervals along the circumference of the base.

[0007] Preferably, the base includes a first arc strip and a second arc strip; the first arc strip and the second arc strip slide together along an arc trajectory, and the inner circumferential side surface of the first arc strip and the inner circumferential side surface of the second arc strip together form a groove for fitting onto the central shaft.

[0008] Preferably, the first arc strip and the second arc strip switch between a first position where they are far apart and a second position where they are close together. When the first arc strip and the second arc strip are in the first position, the included angle between the two ends of the first arc strip and the second arc strip that are far apart is greater than 180 degrees.

[0009] Preferably, a first threaded push rod is threadedly connected to the first arc strip, and a second threaded push rod is threadedly connected to the second arc strip. The first threaded push rod has a first abutting end for abutting against the outer circumferential side of the central shaft, and the second threaded push rod has a second abutting end for abutting against the outer circumferential side of the central shaft.

[0010] Preferably, the first threaded push rod further has a first lifting end, and a first top cap is threadedly connected to the first lifting end. The first abutting end, the first lifting end, and the first top cap are arranged sequentially along the diameter of the first arc strip and away from the center. The second threaded push rod also has a second lifting end, on which a second top cap is threadedly connected. The second abutting end, the second lifting end, and the second top cap are arranged sequentially along the diameter of the second arc strip and away from the center.

[0011] Preferably, the first threaded push rod is provided with a first hexagonal block, and the second threaded push rod is provided with a second hexagonal block. The first hexagonal block is located between the first abutting end and the first lifting end, and the second hexagonal block is located between the second abutting end and the second lifting end.

[0012] Preferably, the first abutting end, the second abutting end, the first top cap, and the second top cap are all provided with anti-scratch pads.

[0013] Preferably, the flange alignment device for the permanent magnet shaft-driven generator further includes a first connecting strip and a second connecting strip; part of the base plate is connected to the first arc strip through the first connecting strip, and part of the base plate is connected to the second arc strip through the second connecting strip.

[0014] Preferably, the positioning pin has a connecting end and an insertion end, the connecting end being connected to the substrate, and the cross-section of the insertion end gradually decreasing in the direction away from the connecting end.

[0015] On the other hand, a method for aligning a flange of a permanent magnet shaft-driven generator is provided. Based on the above-mentioned flange alignment device for a permanent magnet shaft-driven generator, the method for aligning a flange of a permanent magnet shaft-driven generator includes the following steps: S10: The clamp-type permanent magnet shaft generator flange alignment device is sleeved onto the central shaft through the base; S20: Insert the positioning screw into any positioning hole of the shaft flange on the central shaft so that the positioning screw is threadedly connected to the shaft flange; S30: Move the central shaft so that the shaft flange is close to the rotor flange, and one of the first connection holes of the shaft flange is aligned with any of the second connection holes of the rotor flange. S40: Make fine adjustments to the moving central shaft, and then insert the positioning pin into the first and second connecting holes on the shaft flange that are aligned with each other on the rotor flange, and the rotor flange is sleeved on the shoulder of the shaft flange. S50: Connect the shaft flange to the rotor flange by passing the connecting bolts through the remaining first connecting holes on the shaft flange and the remaining second connecting holes on the rotor flange. S60: Disassemble the positioning screw, the positioning pin, and the base, and finally use connecting bolts to pass through the first connecting hole and the second connecting hole on the shaft flange and the rotor flange where the positioning pin has been removed.

[0016] The beneficial effects of this application are as follows: The flange alignment device for a permanent magnet shaft-driven generator uses a base sleeved on the central shaft. The base can rotate around the central shaft, allowing the positioning screw to align and engage with the positioning holes of the shaft flange. Then, positioning pins are sequentially passed through the first connecting hole of the shaft flange and the second connecting hole of the rotor flange to achieve alignment and positioning of the shaft flange and rotor flange. Finally, connecting bolts are installed to connect the shaft flange and rotor flange, completing the installation of the flange for the permanent magnet shaft-driven generator. This application reduces the difficulty of flange alignment, reduces the time required for flange installation, and improves the installation efficiency of the flange for the permanent magnet shaft-driven generator.

[0017] The flange alignment method of this application for a permanent magnet shaft-driven generator uses the aforementioned flange alignment device to achieve precise and rapid alignment of the shaft flange and rotor flange, thereby improving the installation efficiency of the permanent magnet shaft-driven generator flange. Attached Figure Description

[0018] The present application will now be described in further detail with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a schematic diagram of the flange alignment device for a permanent magnet shaft-driven generator according to this application. The positioning screw and positioning pin are omitted in the figure. Figure 2 This is a schematic diagram of the flange alignment device for a permanent magnet shaft-driven generator. The positioning screw and positioning pin are omitted in the diagram. Figure 3 and Figure 4 This is a sectional view of the flange alignment device for a permanent magnet shaft-driven generator, showing the operation of the device. The positioning screw and positioning pin are omitted in the figure. Figure 5 This is a schematic diagram of the axial projection of the shaft flange; Figure 6 A radial projection diagram of the shaft flange. Figures 7 to 10 This is a partial schematic diagram illustrating the usage process of shaft flanges and rotor flanges.

[0020] Explanation of reference numerals in the attached figures: 11. Base; 12. Base plate; 13. Positioning screw; 14. Positioning pin; 15. First threaded ejector pin; 16. Second threaded ejector pin; 17. First ejector cap; 18. Second ejector cap; 19. Anti-scratch pad; 20. First connecting strip; 21. Second connecting strip; 22. Central shaft; 23. Shaft flange; 24. Rotor flange; 111. First arc strip; 112. Second arc strip; 113. Slot; 114. First limiting block; 115. Second limiting block; 121. Rod hole; 122. Pin hole; 151. The first hexagonal piece; 161. The second hexagonal piece; 171. The third hexagonal piece; 181. The fourth hexagonal piece; 231. Locating hole; 232. First connecting hole; 233. Shoulder; 241. Second connecting hole; 242. Hole wall; 243. Hole shoulder. Detailed Implementation

[0021] To make the technical problems solved by this application, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of this application are further described in detail below. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "fixed," "linked," "communicated," "abutting," "clamping," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0023] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0024] Before discussing the exemplary embodiments in more detail, it should be noted that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although the flowcharts describe the operations (or steps) as sequential processes, many of these operations can be performed in parallel, concurrently, or simultaneously. Furthermore, the order of the operations can be rearranged. The process can be terminated when its operation is completed, but it may also have additional steps not included in the figures. The process may correspond to a method, function, procedure, subroutine, subroutine, etc.

[0025] Unless otherwise stated or defined, the term "and / or" as used in this invention includes any and all combinations of one or more of the associated listed items.

[0026] For ease of description, the left-right direction and axial direction mentioned below are the same as... Figure 3 Its left and right directions are consistent.

[0027] like Figures 1 to 10 As shown, this embodiment provides a flange alignment device for a permanent magnet shaft-driven generator, including a base 11, a base plate 12, a positioning screw 13, and a positioning pin 14.

[0028] The base 11 is used to clamp the central shaft 22. The central shaft 22 is provided with a shaft flange 23, and the central shaft 22 and shaft flange 23 are integrally formed. The central shaft 22 and shaft flange 23 are existing components and will not be described further here. The base plate 12 is connected to the base 11. A positioning screw 13 is rotatably mounted on the base plate 12. The positioning screw 13 is used to insert into the positioning hole 231 of the shaft flange 23, and the positioning hole 231 of the shaft flange 23 is a threaded hole. A positioning pin 14 is mounted on the base plate 12. The positioning pin 14 is used to sequentially insert into the first connecting hole 232 of the shaft flange 23 and the second connecting hole 241 of the rotor flange 24. Both the first connecting hole 232 of the shaft flange 23 and the connecting hole 241 of the rotor flange 24 are second threaded holes. There are multiple first connecting holes 232 of the shaft flange 23 and multiple corresponding second connecting holes 241 of the rotor flange 24. The multiple first connecting holes 232 of the shaft flange 23 are circumferentially spaced along the axis of the shaft flange 23, and the multiple second connecting holes 241 of the rotor flange 24 are circumferentially spaced along the axis of the rotor flange 24. The first connecting holes 232 of the shaft flange 23 and the second connecting holes 241 of the rotor flange 24 are for connecting bolts to pass through sequentially to connect the shaft flange 23 and the rotor flange 24. There are multiple positioning holes 231, and positioning holes 231 are provided between at least two partially adjacent first connecting holes 232 on the shaft flange 23.

[0029] There are at least two of each of the substrate 12, positioning screws 13, and positioning pins 14, and they correspond one-to-one. Multiple substrates 12 are arranged at intervals along the circumference of the base 11. This embodiment uses two substrates 12, two positioning screws 13, and two positioning pins 14 as an example. The two substrates 12 are arranged at intervals along the circumference of the base 11. The positioning pins 14 are optical axes, making them convenient, quick, and efficient to insert into and remove from the first connecting hole 232 and the second connecting hole 241.

[0030] This application first involves attaching the base 11 to the central shaft 22. Then, the base 11 is rotated to adjust the position of the positioning screws 13 on the two base plates 12. The positioning screws 13 on the two base plates 12 are then installed on two different positioning holes 231. The relative positions of the shaft flange 23 and the rotor flange 24 are then adjusted so that one of the first connecting holes 232 of the shaft flange 23 and one of the second connecting holes 241 of the rotor flange 24 are aligned. Finally, the positioning pin 14 on one of the base plates 12 is passed through the aligned first connecting hole 232 and second connecting hole 241 in sequence. Since the shoulder 243 of the rotor flange 24 is not yet aligned with the shoulder 233 of the shaft flange 23, the relative positions of the shaft flange 23 and the rotor flange 24 are adjusted further to align the first connecting hole 232 adjacent to the positioning hole 231 into which the positioning screw 13 on the other base plate 12 is inserted with the corresponding second connecting hole 241 on the rotor flange 24. This achieves alignment between the shoulder 243 of the rotor flange 24 and the shoulder 233 of the shaft flange 23, with the shoulder 243 of the rotor flange 24 fitting and abutting against the shoulder 233 of the shaft flange 23. Next, the positioning pin 14 on the other base plate 12 is passed sequentially through the aligned first connecting hole 232 and second connecting hole 241, at which point all first connecting holes 232 and all second connecting holes 241 are aligned one-to-one. Then, use connecting bolts to insert into the first connecting hole 232 and the second connecting hole 241 where the positioning pin 14 is not inserted to connect the rotor flange 24 and the shaft flange 23. Then, quickly remove the positioning pin 14 and use connecting bolts to pass through the remaining two sets of first connecting holes 232 and second connecting holes 241 to install the shaft flange 23 and the rotor flange 24.

[0031] Thus, the flange alignment device of this application for a permanent magnet shaft-driven generator does not require repeated attempts to align the rotor flange 24 with the shaft flange 23. The flange alignment device is mounted on the central shaft 22 via the base 11. When adjusting the relative position of the shaft flange 23 and the rotor flange 24, manual holding of the flange alignment device is not required. Therefore, it can be operated without the need for multiple people, reducing the difficulty of flange alignment, reducing the time spent on flange installation, and improving the installation efficiency of the permanent magnet shaft-driven generator flange.

[0032] Optionally, the base plate 12 is provided with two pin holes 122, and a rod hole 121 is provided between the two pin holes 122. One pin hole 122 is equipped with a positioning pin 14, and the other can be used as a spare, improving the flexibility and interchangeability of use. The positioning screw 13 is rotatably mounted in the rod hole 121 through the rod hole 121.

[0033] Furthermore, the substrate 12 includes a first slider, a second slider, and a third slider. One pin hole 122 is located in the first slider, and the other pin hole 122 is located in the second slider. A rod hole 121 is located in the second slider. The first slider, second slider, and third slider are sequentially slidably connected along an arc trajectory, i.e., the first slider slides relative to the second slider along an arc trajectory, and the third slider slides relative to the second slider along an arc trajectory. For example, the second slider has arc strips on both sides, and the first and second sliders have sliding holes that cooperate with the arc strips and extend along an arc trajectory. The arc strips slide within the sliding holes, allowing the first slider, second slider, and third slider to be sequentially slidably connected along an arc trajectory. This allows the distance between the pin holes 122 and the rod holes 121 on the substrate 12 to be adjusted, thereby enabling the positioning screw 13 and the positioning pin 14 to be adapted to different positioning holes 231 and first connecting holes 232 with varying spacing on different shaft flanges 23.

[0034] The positions of the sliding holes and the arc strips can be interchanged. This application uses an arc strip on the second slider to avoid increasing the processing difficulty of the substrate 12 by using staggered sliding holes on the second slider. After the first, second, and third sliders are adjusted to their relative positions, they can be locked with bolts.

[0035] In one embodiment, the base 11 includes a first arcuate strip 111 and a second arcuate strip 112. The first arcuate strip 111 and the second arcuate strip 112 slide together along an arcuate trajectory. The first arcuate strip 111 has an arcuate groove, and the second arcuate strip 112 has an arcuate slide bar. The arcuate slide bar slides within the arcuate groove, achieving a sliding connection between the first arcuate strip 111 and the second arcuate strip 112. The inner circumferential side surfaces of the first arcuate strip 111 and the second arcuate strip 112 together form a groove 113 for fitting onto the central shaft 22. The mutual sliding of the first arcuate strip 111 and the second arcuate strip 112 facilitates the fitting of the base 11 onto the central shaft 22. Furthermore, the first arc strip 111 and the second arc strip 112 switch between a first position where they are far apart and a second position where they are close together. When the first arc strip 111 and the second arc strip 112 are in the first position, the included angle between the two ends of the first arc strip 111 and the second arc strip 112 that are far apart is greater than 180 degrees. This prevents the base 11 from accidentally falling off after it is fitted onto the central shaft 22.

[0036] Optionally, a first threaded push rod 15 is threadedly connected to the first arc strip 111, and a second threaded push rod 16 is threadedly connected to the second arc strip 112. The first threaded push rod 15 has a first abutting end for abutting against the outer circumferential side of the central shaft 22, and the second threaded push rod 16 has a second abutting end for abutting against the outer circumferential side of the central shaft 22. Sliding the first arc strip 111 and the second arc strip 112 causes the first arc strip 111 and the second arc strip 112 to rotate relative to each other. After the positioning screw 13 on the base plate 12 is aligned and inserted into the positioning hole 231, the first threaded push rod 15 and the second threaded push rod 16 lock the first arc strip 111 and the second arc strip 112 to prevent the first arc strip 111 and the second arc strip 112 from sliding relative to each other.

[0037] Furthermore, a first limiting block 114 is provided at the end of the first arc strip 111 that is away from the second arc strip 112, and an anti-detachment block is provided at the end of the first arc strip 111 that is close to the second arc strip 112. A second limiting block 115 is provided at the end of the second arc strip 112 that is away from the first arc strip 111. The first limiting block 114 and the second limiting block 115 are used to limit the sliding of the first arc strip 111 and the second arc strip 112 when they are close to each other. The arc strip slides between the first limiting block 114 and the anti-detachment block to prevent the first arc strip 111 and the second arc strip 112 from separating when they are far apart.

[0038] In one embodiment, the first threaded push rod 15 further has a first lifting end, on which a first cap 17 is threadedly connected. The first abutment end, the first lifting end, and the first cap 17 are arranged sequentially along the diameter of the first arc strip 111 and away from the center. The first lifting end is threadedly connected to the first threaded push rod 15, and the second lifting end is threadedly connected to the second threaded push rod 16. There are multiple first threaded push rods 15 and second threaded push rods 16, which are arranged at intervals along the circumference of the central axis 22.

[0039] The second threaded push rod 16 also has a second lifting end, on which a second top cap 18 is threadedly connected. The second abutting end, the second lifting end, and the second top cap 18 are arranged sequentially along the diameter of the second arc strip 112 and away from the center.

[0040] In the prior art, the shaft hole of the rotor flange 24 has an annular hole wall 242. After the shaft flange 23 passes through the shaft hole of the rotor flange 24, the relative positions of the rotor flange 24 and the shaft flange 23 need to be adjusted to make them coaxial. The current main adjustment method is to move the shaft flange 23 by means of a crane, etc. This method has low adjustment accuracy and the shaft flange 23 has a large sway angle. The shaft flange 23 and the rotor flange 24 are prone to damage due to collision, and manual support is required to reduce the damage caused by swaying.

[0041] In this application, by driving the first top cap 17 and the second top cap 18 to rotate, the first top cap 17 and the second top cap 18 are fixed on the hole wall 242 of the rotor flange 24. At this time, the shaft flange 23 cannot move radially. Then, the shaft flange 23 is rotated so that the first connecting hole 232 is aligned with the second connecting hole 241. If there is a radial misalignment between the first connecting hole 232 and the second connecting hole 241, the first top cap 17 and the second top cap 18 are driven to rotate for adjustment, thus realizing the fine adjustment of the position of the shaft flange 23 until the first connecting hole 232 and the second connecting hole 241 are aligned one by one, so that the rotor flange 24 and the shaft flange 23 are coaxial and set together.

[0042] Furthermore, the first threaded push rod 15 is provided with a first hexagonal block 151, and the second threaded push rod 16 is provided with a second hexagonal block 161. The first hexagonal block 151 is located between the first abutting end and the first lifting end, and the second hexagonal block 161 is located between the second abutting end and the second lifting end, which facilitates driving the first threaded push rod 15 and the second threaded push rod 16 to rotate.

[0043] It is understandable that the first top cap 17 is provided with a third hexagonal block 171 and the second top cap 18 is provided with a fourth hexagonal block 181, so as to facilitate the rotation of the first top cap 17 and the second top cap 18.

[0044] Optionally, anti-scratch pads 19 are provided on the first abutment end, the second abutment end, the first top cap 17, and the second top cap 18. The rotor flange 24 and the shaft flange 23 are both high-precision parts. The anti-scratch pad 19 is hemispherical, and the arc surface of the anti-scratch pad 19 abuts against the arc surface of the hole wall 242, so as to avoid scratches caused by the first top cap 17 and the second top cap 18 abutting against the hole wall 242, thus avoiding affecting the precision of the rotor flange 24 and the shaft flange 23.

[0045] In one embodiment, the flange alignment device for a permanent magnet shaft-driven generator further includes a first connecting strip 20 and a second connecting strip 21. Part of the base plate 12 is connected to the first arc strip 111 via the first connecting strip 20, and part of the base plate 12 is connected to the second arc strip 112 via the second connecting strip 21, thereby realizing the connection between the base plate 12 and the first arc strip 111 and the second arc strip 112.

[0046] The positioning holes 231 and the first connecting hole 232 of the shaft flange 23 are at different distances from the axis of the shaft flange 23. Both the first connecting strip 20 and the second connecting strip 21 are telescopic, allowing this application to adapt to shaft flanges 23 of different diameters. For example, both the first connecting strip 20 and the second connecting strip 21 include two sliding plates that slide relative to each other. The two sliding plates slide relative to each other radially along the central axis 22 to adjust the length of the first connecting strip 20 and the second connecting strip 21. After adjusting the length of the first connecting strip 20 and the second connecting strip 21, they can be locked with bolts.

[0047] Optionally, the positioning pin 14 has a connecting end and an insertion end. The connecting end is connected to the substrate 12, and the cross-section of the insertion end gradually decreases along the direction away from the connecting end, so as to facilitate the insertion of the positioning pin 14 into the positioning hole 231.

[0048] This embodiment also provides a method for aligning a flange of a permanent magnet shaft-driven generator, based on any of the above embodiments of a flange alignment device for a permanent magnet shaft-driven generator. The method for aligning a flange of a permanent magnet shaft-driven generator includes the following steps: S10: The flange alignment device of the permanent magnet shaft generator is mounted on the central shaft 22 via the base 11.

[0049] S20: Insert the positioning screw 13 into any positioning hole 231 of the shaft flange 23 on the central shaft 22 so that the positioning screw 13 is threadedly connected to the shaft flange 23.

[0050] S30: Move the central shaft 22 so that the shaft flange 23 is close to the rotor flange 24, and one of the first connection holes 232 of the shaft flange 23 is aligned with any of the second connection holes 241 of the rotor flange 24.

[0051] S40: Move the central shaft 22 for fine adjustment, and then insert the positioning pin 14 into the first connecting hole 232 and the second connecting hole 241 on the shaft flange 23 and the rotor flange 24, which are aligned with each other, and the rotor flange 24 is sleeved on the shoulder 233 of the shaft flange 23.

[0052] S50: Use connecting bolts to pass through the remaining first connecting holes 232 on the shaft flange 23 and the remaining second connecting holes 241 on the rotor flange 24 to connect the shaft flange 23 and the rotor flange 24.

[0053] S60: Disassemble the positioning screw 13, positioning pin 14, and base 11, and finally use connecting bolts to pass through the first connecting hole 232 and the second connecting hole 241 on the shaft flange 23 and the rotor flange 24 where the positioning pin 14 has been removed.

[0054] The technical principles of this application have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this application and should not be construed as limiting the scope of protection of this application in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this application without inventive effort, and these embodiments will all fall within the scope of protection of this application.

Claims

1. A flange alignment device for a permanent magnet shaft-driven generator, characterized in that, include: Base (11), used for fitting onto central shaft (22); The substrate (12) is connected to the base (11); A positioning screw (13) is used to be inserted into the positioning hole (231) of the shaft flange (23); the positioning screw (13) is rotatably mounted on the base plate (12); as well as A positioning pin (14) is used to be inserted sequentially into the first connecting hole (232) of the shaft flange (23) and the second connecting hole (241) of the rotor flange (24); the positioning pin (14) is mounted on the base plate (12); There are at least two of each of the substrate (12), the positioning screw (13), and the positioning pin (14), and they correspond one-to-one. Multiple substrates (12) are arranged at intervals along the circumference of the base (11).

2. The flange alignment device for a permanent magnet shaft-driven generator according to claim 1, characterized in that, The base (11) includes a first arc strip (111) and a second arc strip (112); the first arc strip (111) and the second arc strip (112) slide together along the arc trajectory, and the inner circumferential side surface of the first arc strip (111) and the inner circumferential side surface of the second arc strip (112) together form a sleeve groove (113) for fitting onto the central shaft (22).

3. The flange alignment device for a permanent magnet shaft-driven generator according to claim 2, characterized in that, The first arc strip (111) and the second arc strip (112) switch between a first position where they are far apart and a second position where they are close together. When the first arc strip (111) and the second arc strip (112) are in the first position, the included angle between the two ends of the first arc strip (111) and the second arc strip (112) that are far apart is greater than 180 degrees.

4. The flange alignment device for a permanent magnet shaft-driven generator according to claim 2, characterized in that, The first arc bar (111) is threaded with a first threaded push rod (15), and the second arc bar (112) is threaded with a second threaded push rod (16). The first threaded push rod (15) has a first abutting end for abutting against the outer circumferential side of the central shaft (22), and the second threaded push rod (16) has a second abutting end for abutting against the outer circumferential side of the central shaft (22).

5. The flange alignment device for a permanent magnet shaft-driven generator according to claim 4, characterized in that, The first threaded push rod (15) also has a first lifting end, on which a first top cap (17) is threadedly connected. The first abutting end, the first lifting end and the first top cap (17) are arranged sequentially along the diameter of the first arc strip (111) and away from the center. The second threaded push rod (16) also has a second lifting end, on which a second top cap (18) is threadedly connected. The second abutting end, the second lifting end and the second top cap (18) are arranged sequentially along the diameter of the second arc strip (112) and away from the center.

6. The flange alignment device for a permanent magnet shaft-driven generator according to claim 5, characterized in that, Anti-scratch pads (19) are provided on the first abutting end, the second abutting end, the first top cap (17), and the second top cap (18).

7. The flange alignment device for a permanent magnet shaft-driven generator according to claim 2, characterized in that, It also includes a first connecting strip (20) and a second connecting strip (21); part of the substrate (12) is connected to the first arc strip (111) through the first connecting strip (20), and part of the substrate (12) is connected to the second arc strip (112) through the second connecting strip (21).

8. The flange alignment device for a permanent magnet shaft-driven generator according to claim 7, characterized in that, The first threaded push rod (15) is provided with a first hexagonal block (151), and the second threaded push rod (16) is provided with a second hexagonal block (161). The first hexagonal block (151) is located between the first abutting end and the first lifting end, and the second hexagonal block (161) is located between the second abutting end and the second lifting end.

9. The flange alignment device for a permanent magnet shaft-driven generator according to any one of claims 1 to 8, characterized in that, The positioning pin (14) has a connecting end and an insertion end. The connecting end is connected to the substrate (12), and the cross-section of the insertion end gradually decreases along the direction away from the connecting end.

10. A method for aligning a flange of a permanent magnet shaft-driven generator, based on the flange alignment device of any one of claims 1 to 9, characterized in that, Includes the following steps: S10: The flange alignment device of the permanent magnet shaft generator is fitted onto the central shaft (22) through the base (11); S20: Insert the positioning screw (13) into any positioning hole (231) of the shaft flange (23) on the central shaft (22) so that the positioning screw (13) is threadedly connected to the shaft flange (23); S30: Move the central shaft (22) so that the shaft flange (23) is close to the rotor flange (24), and one of the first connection holes (232) of the shaft flange (23) is aligned with any of the second connection holes (241) of the rotor flange (24); S40: Move the central shaft (22) for fine adjustment, and then insert the positioning pin (14) into the first connecting hole (232) and the second connecting hole (241) on the shaft flange (23) that are aligned with each other on the rotor flange (24), and the rotor flange (24) is sleeved on the shoulder (233) of the shaft flange (23); S50: Use connecting bolts to pass through the remaining first connecting holes (232) on the shaft flange (23) and the remaining second connecting holes (241) on the rotor flange (24) to connect the shaft flange (23) and the rotor flange (24); S60: Disassemble the positioning screw (13), the positioning pin (14), and the base (11), and finally use connecting bolts to pass through the first connecting hole (232) and the second connecting hole (241) on the shaft flange (23) and the rotor flange (24) where the positioning pin (14) has been removed.

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