Synchronous main generator

Abstract

The utility model relates to a synchronous main generator. The synchronous main generator comprises a stator, a rotor and a main beam, a first movable limiting hole and a second movable limiting hole are formed in the main beam, the first movable limiting hole is matched with a first connecting hole in a flange plate of the rotor, and the second movable limiting hole is matched with a second connecting hole in the side face of the stator; the first movable limiting hole is connected to the first connecting hole through a first connecting piece; the second movable limiting hole is connected to the second connecting hole through a second connecting piece; in the transportation process of the synchronous main generator, the stator and the rotor are kept relatively static under the action of the main beam. According to the scheme, the stator and the rotor can be better fixed in the transportation process, abrasion between the stator and the rotor caused by relative rotation of the stator and the rotor in the transportation process is reduced, and the service life of the synchronous motor can be prolonged.

Description

Technical Field

[0001] The present application relates to the field of engine technology, and in particular to a synchronous main generator. Background Art

[0002] The synchronous main generator of a diesel locomotive is a key component in an electric transmission diesel locomotive. It converts the mechanical energy of the diesel engine into electrical energy, and then converts the electrical energy into mechanical energy through an electric motor to drive the wheels to make the train move.

[0003] Synchronous main generators typically feature a horizontal, single-bearing structure. The synchronous main engine consists of a stator and rotor. During factory transportation, the synchronous main generator must be placed on a transport vehicle. During this process, the stator and rotor rotate relative to each other. The rotor also rotates during transportation, causing wear between the rotor and stator, which reduces the service life of the synchronous main generator. Utility Model Content

[0004] In order to solve or partially solve the problems existing in the related art, the present application provides a synchronous main generator, which can better fix the stator and rotor during transportation, reduce the wear between the stator and rotor caused by relative rotation of the stator and rotor during transportation, and improve the service life of the synchronous engine.

[0005] The present application provides a synchronous main generator, comprising: a stator, a rotor, and a main beam;

[0006] The main beam is provided with a first movable limiting hole and a second movable limiting hole, the first movable limiting hole matches the first connecting hole on the flange of the rotor, and the second movable limiting hole matches the second connecting hole on the side surface of the stator;

[0007] The first movable limiting hole is connected to the first connecting hole through a first connecting member;

[0008] The second movable limiting hole is connected to the second connecting hole through a second connecting member;

[0009] During the transportation of the synchronous main generator, the stator and the rotor remain relatively stationary under the action of the main beam.

[0010] In a possible implementation, the main beam is in a long strip shape, and the first movable limiting hole and the second movable limiting hole are located on the same straight line of the main beam.

[0011] In a possible implementation, the movable direction of the first connecting member in the first movable limiting hole and the movable direction of the second connecting member in the second movable limiting hole are consistent with the extension direction of the main beam.

[0012] In a possible implementation, a plurality of main beams are provided on the synchronous main generator, and the extension directions of the plurality of main beams are different.

[0013] In a possible implementation, the angles between the extension directions of any two adjacent main beams are the same.

[0014] In a possible implementation, the main beam is a long steel bar with a grooved cross-section, and the length of the main beam is greater than the diameter of the stator.

[0015] In a possible implementation, the first movable limiting hole and the second movable limiting hole are provided at the bottom of the groove of the main beam.

[0016] In one possible implementation, the first connecting member includes: a first nut, a first bolt, a first spring washer, and a first flat washer. The first spring washer and the first flat washer are sequentially inserted into the first bolt, with the first spring washer close to the head of the first bolt. The first bolt and the first nut are used to connect the first movable limiting hole and the first connecting hole.

[0017] The second connecting member includes: a second nut and a second bolt, a second spring washer and a second flat washer. The second spring washer and the second flat washer are sequentially inserted into the second bolt. The second spring washer is close to the head of the second bolt. The second bolt and the second nut are used to connect the second movable limiting hole and the second connecting hole.

[0018] In a possible implementation, the first connection holes are evenly located on the flange, and the positions of the first connection holes form a circle;

[0019] The second connecting holes are evenly located on the side surface of the stator, and the positions of the second connecting holes form a circle.

[0020] In a possible implementation, there are two first movable limiting holes and two second movable limiting holes.

[0021] The technical solution provided by this application may have the following beneficial effects:

[0022] The synchronous main generator of the present application includes: a stator, a rotor, and a main beam; a first movable limiting hole and a second movable limiting hole are provided on the main beam, the first movable limiting hole matches the first connecting hole on the flange of the rotor, and the second movable limiting hole matches the second connecting hole on the side of the stator; the first movable limiting hole is connected to the first connecting hole through a first connecting member; the second movable limiting hole is connected to the second connecting hole through a second connecting member; during the transportation of the synchronous main generator, the stator and the rotor remain relatively stationary under the action of the main beam, which can better fix the stator and the rotor during transportation, reduce the relative rotation of the stator and the rotor during transportation and cause wear between the stator and the rotor, and can improve the service life of the synchronous engine.

[0023] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 is a schematic cross-sectional structural diagram of a synchronous main generator shown in an embodiment of the present application;

[0026] Figure 2 1 is a schematic structural diagram of a main beam of a synchronous main generator shown in an embodiment of the present application;

[0027] Figure 3 1 is a structural diagram of a first connecting member of a synchronous main generator shown in an embodiment of the present application;

[0028] Figure 4 1 is a schematic structural diagram of a second connecting member of a synchronous main generator shown in an embodiment of the present application;

[0029] Figure 5 1 is a schematic structural diagram of a stator of a synchronous main generator shown in an embodiment of the present application;

[0030] Figure 6 This is a schematic diagram of the structure of the rotor of the synchronous main generator shown in the embodiment of the present application.

[0031] Figure 7 1 is a schematic structural diagram of a synchronous main generator shown in an embodiment of the present application;

[0032] Figure 8 This is another structural schematic diagram of the synchronous main generator shown in an embodiment of the present application.

[0033] Figure numerals: 1. stator; 101. second connecting hole; 2. rotor; 201. flange; 202. first connecting hole; 3. main beam; 301. first movable limiting hole; 302. second movable limiting hole; 4. first connecting member; 401. first bolt; 402. first spring washer; 403. first flat washer; 5. second connecting member; 501. second bolt; 502. second spring washer; 503. second flat washer. DETAILED DESCRIPTION

[0034] The following describes embodiments of the present application in more detail with reference to the accompanying drawings. Although the accompanying drawings illustrate embodiments of the present application, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0035] It should be understood that although the terms "first", "second", "third", etc. may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0036] In addition, in the embodiments of the present application, "plurality" refers to two or more. In view of this, in the embodiments of the present application, "plurality" can also be understood as "at least two". "At least one" can be understood as one or more, for example, one, two, or more. For example, "including at least one" means including one, two, or more, and does not limit which ones are included. For example, "including at least one of A, B, and C" means including A, B, C, A and B, A and C, B and C, or A, B, and C.

[0037] In the description of the embodiments of this application, words such as "example" or "for example" are used to indicate an example, illustration, or description. Any embodiment or design described as "for example" or "for example" in the embodiments of this application is not to be construed as being preferred or having more advantages than another embodiment or design. The use of words such as "example" or "for example" is intended to clearly present relative concepts.

[0038] In the description of this application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0039] Unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," and the like should be interpreted broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0040] In the related art, the synchronous main generator is a critical component of a diesel locomotive. During locomotive maintenance, if quality issues are discovered with the synchronous main generator, the locomotive will be shut down for repair, delaying its operation. The synchronous main generator typically has a horizontal single-bearing structure, and the synchronous main engine consists of a stator 1 and a rotor 2. When transporting the synchronous main generator from the factory, the synchronous main engine must be placed on a transport vehicle. During this process, the stator 1 and rotor 2 rotate relative to each other. During transportation, the rotor 2 also rotates, causing wear between the rotor 2 and stator 1, reducing the service life of the synchronous main engine.

[0041] In response to the above problems, an embodiment of the present application provides a synchronous main generator that can better fix the stator 1 and the rotor 2 during transportation, reduce the wear between the stator 1 and the rotor 2 caused by relative rotation between the stator 1 and the rotor 2 during transportation, and improve the service life of the synchronous engine.

[0042] The technical solutions of the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0043] Figure 1 It is a structural schematic diagram of a synchronous main generator shown in an embodiment of the present application.

[0044] See also Figures 1-8A synchronous main generator includes a stator 1, a rotor 2, and a main beam 3. The stator 1 and the rotor 2 are assembled and combined with each other to form a synchronous main generator; a first movable limiting hole 301 and a second movable limiting hole 302 are provided on the main beam 3, the first movable limiting hole 301 matches the first connecting hole 202 on the flange 201 of the rotor 2, and the second movable limiting hole 302 matches the second connecting hole 101 on the side of the stator 1; the first movable limiting hole 301 is connected to the first connecting hole 202 through a first connecting member 4; the second movable limiting hole 302 is connected to the second connecting hole 101 through a second connecting member 5; during the transportation of the synchronous main generator, the stator 1 and the rotor 2 remain relatively stationary under the action of the main beam 3.

[0045] Specifically, the operating principle of the synchronous main generator used in diesel locomotives is based on electromagnetic induction. When the piston movement of the internal combustion engine drives the crankshaft to rotate, the crankshaft drives the generator's rotor 2 through a transmission device (such as a belt or gears). Rotor 2 typically contains a magnetic field coil. As it rotates, it generates a changing magnetic field in the generator's stator 1 (the stationary part), inducing current in the stator 1 coil, converting mechanical energy into electrical energy. The "synchronization" of a synchronous main generator refers to the generator's rotational speed being consistent with the grid frequency. This is typically achieved by adjusting the internal combustion engine's speed to ensure that the frequency of the generator's output power matches the grid frequency. For example, if the grid frequency is 50 Hz, the generator's speed must be maintained at the synchronous speed corresponding to 50 Hz to ensure that the output power can be seamlessly integrated into the grid. The operation of the synchronous main generator ensures the smooth operation of the diesel locomotive. Therefore, it is desirable to extend the life of the synchronous main generator to reduce the need for maintenance.

[0046] Specifically, the stator 1 is the stationary part of a synchronous main generator, typically consisting of an iron core and windings. In a synchronous main generator, the stator 1 generates a static magnetic field. When the rotor 2 rotates, this magnetic field induces current in the coils. The stator 1 is typically constructed from multiple stacked iron sheets (called stator sheets or silicon steel sheets) to reduce eddy current losses and improve efficiency. The iron sheets are insulated to prevent current from short-circuiting within the iron core.

[0047] Specifically, the rotor 2 is the primary rotating component in the synchronous main generator, typically consisting of an iron core, windings, a shaft, and possibly other mechanical components. In the synchronous main generator, the rotation of the rotor 2 generates a changing magnetic field, which in turn induces current in the coils of the stator 1. The rotor 2 can be solid or composed of multiple stacked iron laminations, similar to the iron core structure of the stator 1. Solid rotors 2 are typically made of conductive material, while laminated rotors 2 are separated by insulating material. The speed of the rotor 2 is related to the output voltage and frequency of the synchronous main generator. The longer the life of the rotor 2, the more stable the synchronous main generator can output the required electrical energy for the diesel locomotive.

[0048] Specifically, the main beam 3 can be arranged on one side of the synchronous main generator, and a first movable limiting hole 301 and a second movable limiting hole 302 are provided on the main beam 3. It can be understood that the first movable limiting hole 301 can be set to at least one, for example, two, and the second movable limiting hole 302 can be set to at least one, for example, two, and there is no restriction here; a flange 201 can be provided in the central area of ​​the rotor 2, and a first connecting hole 202 can be provided on the flange 201. The number of the first connecting holes 202 can be at least one and arranged around the flange 201. The first movable limiting hole 301 can be matched and connected with the first connecting hole 202; a plurality of second connecting holes 101 can be provided on the side of the stator 1, and the second movable limiting hole 302 can be matched and connected with the second connecting hole 101.

[0049] Specifically, the first movable limiting hole 301 can be connected to the first connecting hole 202 through the first connecting member 4, and the first connecting member 4 can fix the first movable limiting hole 301 with the first connecting hole 202, and the number of first connecting members 4 can be matched to be consistent with the number of the second movable limiting holes 302; the second movable limiting hole 302 can be connected to the second connecting hole 101 through the second connecting member 5, and the second connecting member 5 can fix the second movable limiting hole 302 with the second connecting hole 101, and the number of first connecting members 4 can be matched to be consistent with the number of the second movable limiting holes 302.

[0050] Specifically, the shape of the first movable limiting hole 301 can be a rectangle, a circle, etc., and the shape of the second movable limiting hole 302 can be a rectangle, a circle, etc., which is not limited here. The size of the first movable limiting hole 301 is larger than the size of the first connecting hole 202. For example, the size of the first movable limiting hole 301 is 18-24 mm. Preferably, the size of the first movable limiting hole 301 is 24 mm, and the size of the second movable limiting hole 302 is larger than the size of the second connecting hole 101. For example, the size of the first movable limiting hole 301 can be 18-30mm, by making the size of the first movable limiting hole 301 larger than the size of the first connecting hole 202, and the size of the second movable limiting hole 302 larger than the size of the second connecting hole 101, the first movable limiting hole 301 can be matched with first connecting holes 202 of different sizes, and the second movable limiting hole 302 can be matched with second connecting holes 101 of different sizes, so that the main beam 3 can be matched with stators 1 and rotors 2 of different hole sizes, and the main beam 3 can be adapted to synchronous main generators of different sizes, thereby increasing the adaptability of the main beam 3.

[0051] Specifically, the size of the first connection hole 202 on the flange 201 of the rotor 2 can be larger than the second connection hole 101 on the side of the stator 1, and the size of the first connection hole 202 can also be consistent with the size of the second connection hole 101. For example, the first connection hole 202 and the second connection hole 101 are both circular, the diameter of the first connection hole 202 is 18 mm, and the diameter of the second connection hole 101 is 18 mm.

[0052] The synchronous main generator of the present application includes: a stator 1, a rotor 2, and a main beam 3; a first movable limiting hole 301 and a second movable limiting hole 302 are provided on the main beam 3, the first movable limiting hole 301 matches the first connecting hole 202 on the flange 201 of the rotor 2, and the second movable limiting hole 302 matches the second connecting hole 101 on the side of the stator 1; the first movable limiting hole 301 is connected to the first connecting hole 202 through a first connecting member 4; the second movable limiting hole 302 is connected to the second connecting hole 101 through a second connecting member 5; during the transportation of the synchronous main generator, the stator 1 and the rotor 2 remain relatively stationary under the action of the main beam 3, which can better fix the stator 1 and the rotor 2 during transportation, reduce the relative rotation of the stator 1 and the rotor 2 during transportation, and cause wear between the stator 1 and the rotor 2, which can improve the service life of the synchronous engine.

[0053] In a possible implementation, the main beam 3 is in a long strip shape, and the first movable limiting hole 301 and the second movable limiting hole 302 are located on the same straight line of the main beam 3 .

[0054] Specifically, the main beam 3 is in an elongated shape, which allows the main beam 3 to better match the synchronous main generator, and can form a straight line when matching with the synchronous main generator, which can better stabilize the stator 1 and the rotor 2. It can be understood that the first movable limiting hole 301 and the second movable limiting hole 302 are located on the same straight line, which can better match the first connecting hole 202 and the second connecting hole 101.

[0055] Specifically, the first movable limiting hole 301 can be set in the middle position of the main beam 3, the second movable limiting hole 302 can be set on both sides of the main beam 3, and the interval between multiple first movable limiting holes 301 can be smaller than the interval between multiple second movable limiting holes 302.

[0056] In a possible implementation, the movable direction of the first connecting member 4 in the first movable limiting hole 301 and the movable direction of the second connecting member 5 in the second movable limiting hole 302 are consistent with the extension direction of the main beam 3 .

[0057] Specifically, the first connecting member 4 and the second connecting member 5 can move in the first movable limiting hole 301 and the second movable limiting hole 302 respectively, and the moving direction is consistent with the extension direction of the main beam 3, which can better match the first connecting hole 202 or the second connecting hole 101 on the synchronous main generator.

[0058] In a possible implementation, a plurality of main beams 3 are provided on the synchronous main generator, and the extension directions of the plurality of main beams 3 are different.

[0059] Specifically, the number of main beams 3 can be multiple, for example, one or two, and there is no limitation here. The lengths and shapes of the multiple main beams 3 can be consistent. By setting multiple main beams 3 on the synchronous main generator, the stator 1 and the rotor 2 can be further stabilized.

[0060] In a possible implementation, the angles between the extension directions of any two adjacent main beams 3 are the same.

[0061] Specifically, the extension directions of the main beams 3 can all be the same straight line. For example, the angles between any two adjacent main beams 3 can be consistent, which can enhance stability.

[0062] In a possible implementation, the main beam 3 is a long steel bar with a grooved cross-section, and the length of the main beam 3 is greater than the diameter of the stator 1 .

[0063] Specifically, the cross-section of the stator 1 can be circular, and the length of the main beam 3 can be greater than the diameter of the stator 1, so that the main beam 3 can be adapted to the synchronous main generator, avoiding the main beam 3 being too short, resulting in the first movable limiting hole 301 or the second movable limiting hole 302 being unable to connect to the first connection hole 202 or the second connection hole 101, which is beneficial to increase stability.

[0064] In a possible implementation, the first movable limiting hole 301 and the second movable limiting hole 302 are provided at the bottom of the groove of the main beam 3 .

[0065] Specifically, the sizes of the first movable limiting hole 301 and the second movable limiting hole 302 can be consistent. The first movable limiting hole 301 can be opened at the bottom of the middle groove of the main beam 3, and the second movable limiting hole 302 can be opened at the bottom of both sides of the groove of the main beam 3.

[0066] In one possible implementation, the first connecting member 4 includes: a first nut, a first bolt 401, a first spring washer 402 and a first flat washer 403, the first spring washer 402 and the first flat washer 403 are sequentially inserted into the first bolt 401, the first spring washer 402 is close to the head of the first bolt 401, and the first bolt 401 and the first nut are used to connect the first movable limiting hole 301 and the first connecting hole 202; the second connecting member 5 includes: a second nut and a second bolt 501, a second spring washer 502 and a second flat washer 503, the second spring washer 502 and the second flat washer 503 are sequentially inserted into the second bolt 501, the second spring washer 502 is close to the head of the second bolt 501, and the second bolt 501 and the second nut are used to connect the second movable limiting hole 302 and the second connecting hole 101.

[0067] Specifically, the size of the first bolt 401 and the size of the second bolt 501 can be consistent. The first bolt 401 matches the first connecting hole 202, and the second bolt 501 matches the second connecting hole 101. There is no restriction on the sizes of the first bolt 401 and the second bolt 501. For example, when the diameter of the first connecting hole 202 is 10 mm, the diameter of the first bolt 401 is consistent with the diameter of the first connecting hole 202; the first spring washer 402 and the first flat washer 403 can be inserted into the first bolt 401 in sequence, and the second spring washer 502 and the second flat washer 503 can be inserted into the second bolt 501 in sequence. The spring washers and flat washers can reduce the friction when the first bolt 401 and the second bolt 501 are connected to the first connecting hole 202 and the second connecting hole 101, provide buffering, and increase the service life of the first bolt 401 and the second bolt 501.

[0068] In a possible implementation, the first connection holes 202 are evenly located on the flange 201 , forming a circle; the second connection holes 101 are evenly located on the side of the stator 1 , forming a circle.

[0069] Specifically, the shape of the flange 201 can be circular, the first connection holes 202 can be evenly arranged in an array on the flange 201 to form a circular array, and the second connection holes 101 can be evenly arranged in an array on the stator 1 to form a circular array, which can facilitate the adjustment of the connection between the main beam 3 and the stator 1 or the rotor 2, and can adjust the angle of the connection of the main beam 3.

[0070] In a possible implementation, there are two first movable limiting holes 301 and two second movable limiting holes 302 .

[0071] Specifically, there are two first movable limiting holes 301, which can be set in the middle of the main beam 3, and there are two second movable limiting holes 302, which are respectively located on both sides of the main beam 3. The distance between the two first movable limiting holes 301 is smaller than the distance between the two second movable limiting holes 302.

[0072] Working principle:

[0073] After the stator 1 and the rotor 2 are combined to form a synchronous main generator, the main beam 3 can be connected to the synchronous main generator according to the preset position, and the first movable limiting hole 301 on the main beam 3 is matched with the first connecting hole 202 on the rotor 2, and the second movable limiting hole 302 is matched with the second connecting hole 101 on the stator 1. After the hole positions are aligned, the first bolt 401 and the second bolt 501 provided with a spring washer and a flat washer are respectively inserted into the first connecting hole 202 and the second connecting hole 101. After they are fully inserted, the first nut is threadedly connected to the first bolt 401, and the second nut is threadedly connected to the second bolt 501 to complete the fixed connection between the main beam 3 and the synchronous main generator. During the transportation of the synchronous main generator, the main beam 3 can stabilize the rotor 2 and the stator 1 to prevent the rotor 2 and the stator 1 from rotating relative to each other and causing wear. After the transportation is completed, the nut and the bolt can be removed and the main beam 3 can be removed from the synchronous main engine.

[0074] The synchronous main generator of the present application includes: a stator 1, a rotor 2, and a main beam 3; a first movable limiting hole 301 and a second movable limiting hole 302 are provided on the main beam 3, the first movable limiting hole 301 matches the first connecting hole 202 on the flange 201 of the rotor 2, and the second movable limiting hole 302 matches the second connecting hole 101 on the side of the stator 1; the first movable limiting hole 301 is connected to the first connecting hole 202 through a first connecting member 4; the second movable limiting hole 302 is connected to the second connecting hole 101 through a second connecting member 5; during the transportation of the synchronous main generator, the stator 1 and the rotor 2 remain relatively stationary under the action of the main beam 3, which can better fix the stator 1 and the rotor 2 during transportation, reduce the relative rotation of the stator 1 and the rotor 2 during transportation, and cause wear between the stator 1 and the rotor 2, which can improve the service life of the synchronous engine.

[0075] The scheme of the present application has been described in detail above with reference to the accompanying drawings. In the above embodiments, the descriptions of each embodiment have their own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments. Those skilled in the art should also be aware that the actions and modules involved in the description are not necessarily required for this application. In addition, it is understood that the steps in the method of the embodiment of the present application can be adjusted in sequence, merged and deleted according to actual needs, and the modules in the device of the embodiment of the present application can be merged, divided and deleted according to actual needs.

[0076] The embodiments of the present application have been described above. The above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is selected to best explain the principles of the embodiments, their practical applications, or improvements to the technology in the market, or to enable other persons skilled in the art to understand the embodiments disclosed herein.

Claims

1. A synchronous main generator, characterized in that: include: stator, rotor, and main beam; The main beam is provided with a first movable limiting hole and a second movable limiting hole, the first movable limiting hole matches the first connecting hole on the flange of the rotor, and the second movable limiting hole matches the second connecting hole on the side surface of the stator; The first movable limiting hole is connected to the first connecting hole through a first connecting member; The second movable limiting hole is connected to the second connecting hole through a second connecting member; During the transportation of the synchronous main generator, the stator and the rotor remain relatively stationary under the action of the main beam.

2. The synchronous main generator according to claim 1, characterized in that: The main beam is in a long strip shape, and the first movable limiting hole and the second movable limiting hole are located on the same straight line of the main beam.

3. The synchronous main generator according to claim 2, characterized in that: The movable direction of the first connecting member in the first movable limiting hole and the movable direction of the second connecting member in the second movable limiting hole are consistent with the extension direction of the main beam.

4. The synchronous main generator according to claim 1, characterized in that: The synchronous main generator is provided with a plurality of main beams, and the extension directions of the plurality of main beams are different.

5. The synchronous main generator according to claim 4, characterized in that: The angles between the extension directions of any two adjacent main beams are the same.

6. The synchronous main generator according to claim 4, characterized in that: The main beam is a long steel bar with a grooved cross section, and the length of the main beam is greater than the diameter of the stator.

7. The synchronous main generator according to claim 6, characterized in that: The first movable limiting hole and the second movable limiting hole are opened at the bottom of the groove of the main beam.

8. The synchronous main generator according to any one of claims 1 to 7, characterized in that: The first connecting member includes: a first nut, a first bolt, a first spring washer, and a first flat washer. The first spring washer and the first flat washer are sequentially inserted into the first bolt, with the first spring washer close to the head of the first bolt. The first bolt and the first nut are used to connect the first movable limiting hole and the first connecting hole. The second connecting member includes: a second nut and a second bolt, a second spring washer and a second flat washer. The second spring washer and the second flat washer are sequentially inserted into the second bolt. The second spring washer is close to the head of the second bolt. The second bolt and the second nut are used to connect the second movable limiting hole and the second connecting hole.

9. The synchronous main generator according to any one of claims 1 to 7, characterized in that: The first connecting holes are evenly located on the flange, and the positions of the first connecting holes form a circle; The second connecting holes are evenly located on the side surface of the stator, and the positions of the second connecting holes form a circle.

10. The synchronous main generator according to any one of claims 1 to 7, characterized in that: There are two first movable limiting holes and two second movable limiting holes.

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