Rotor magnetic pole module and assembling method

Abstract

The invention belongs to the field of wind driven generators, and particularly relates to a rotor magnetic pole module and an assembling method, and the rotor magnetic pole module comprises a rotor iron core formed by laminating a plurality of first rotor punching sheets and a plurality of second rotor punching sheets in a specific mode, and a magnetic pole module; the magnetic pole module is assembled in a magnetic pole box of the rotor core in a push-pull mode. The rotor iron core replaces an original single magnetic pole box formed by laminating fanning strips, the magnetic pole boxes are connected into a whole in the circumferential direction, the structural strength is high, and the strength of the rotor iron core is improved; sequentially pushing the stainless steel frames assembled with the magnetic steel into the magnetic pole boxes of the rotor iron core; according to the assembling method, the magnetic pole module is arranged to replace a single magnetic steel installation mode, meanwhile, radial fastening bolts of the rotor magnetic pole box are omitted, the problem of bolt looseness is solved, rotor assembling is simplified, and the assembling efficiency is greatly improved.

Description

Technical Field

[0001] The invention belongs to the field of wind turbines, and in particular relates to a rotor magnetic pole module and an assembly method thereof. Background Art

[0002] At present, the rotor pole module adopts the form of rotor pole box, that is, the rotor punching sheets are first laminated and bonded to a certain thickness, and then the magnetic steel is embedded in the rotor punching sheet slot. Usually, each pole is composed of multiple pole boxes, which are arranged in sequence on the outer wall of the bracket along the central axis of the rotor bracket, and finally the pole boxes are fastened to the rotor bracket by bolts.

[0003] For example, the existing patent publication number CN102938591A, a Chinese patent named a pole box with a positioning boss, is formed by laminating and bonding a plurality of first pole punching sheets and a plurality of second pole punching sheets, and the first pole punching sheets and the second pole punching sheets are respectively provided with permanent magnet mounting holes and fixing rod mounting holes, and the second pole punching sheets are provided with bolt through holes on the edges in contact with the yoke, and the bolt through holes are connected with the fixing rod mounting holes, that is, the laminated pole box has permanent magnet mounting holes, fixing rod mounting holes and bolt holes, which solves the problem of unreasonable structure of the existing pole box, but there are still some shortcomings, as follows:

[0004] (1) Each pole box needs to be fastened with four bolts at the radial opening. As the motor power increases and the speed increases, the centrifugal force on the bolts increases, which will offset part of the pre-tightening force, and there is a risk of the bolts loosening and failing.

[0005] (2) The pole boxes are evenly distributed on the circumference according to the number of poles designed for the generator. The pole boxes of each pole are separate entities and need to be assembled one by one on the circumference. The actual assembly efficiency will be reduced, which is not conducive to shortening the manufacturing cycle of the motor.

[0006] (3) The rotor pole box is arranged axially as a whole. The heat of the magnet can only be transferred through heat transfer from the magnet to the rotor core and then to the cooling air, which results in poor heat dissipation.

[0007] In addition, the Chinese patent with the publication number CN110535306A, entitled "A large motor rotor string magnetic pole box assembly tool and assembly method", is also about the installation technology of the rotor magnetic pole module. It discloses a magnetic pole box assembly tool, through which multiple magnetic pole boxes are installed, but it has the following disadvantages:

[0008] (1) Each rotor pole box is radially supported by a clamping tool. During the pushing process of the push plate, the repulsive force between the rotor pole boxes increases, posing a risk of overturning.

[0009] (2) The pusher plate can only push in one magnetic pole box each time, and a set of pressing tooling is required for each magnetic pole box. The number of repeated toolings is relatively large, resulting in low assembly efficiency.

[0010] In view of this, the present invention is particularly proposed. Summary of the Invention

[0011] The object of the present invention is to overcome the above-mentioned shortcomings of the prior art, and propose a rotor magnetic pole module and an assembly method. By modularizing the design of the rotor magnetic pole box and the magnetic pole module, the assembly of the rotor magnetic poles is optimized, and the strength of the rotor core is improved.

[0012] To achieve the above object, the present invention adopts the following technical solutions:

[0013] On the one hand, the present invention provides a rotor magnetic pole module, which includes stacking a plurality of first rotor punching sheets and a plurality of second rotor punching sheets in a specific manner to form a rotor core, and a magnetic pole module;

[0014] The magnetic pole module is assembled in the magnetic pole box of the rotor core by pushing.

[0015] Further, a plurality of sub-rotor cores are stacked in the manner of at least one first rotor punching sheet - at least one second rotor punching sheet - at least one first rotor punching sheet. The rotor core is formed by sequentially stacking a plurality of sub-rotor cores along the axial direction of the rotor, and a first support member and a second support member are arranged between adjacent upper and lower sub-rotor cores.

[0016] Further, each first rotor punching sheet includes a first circular sheet with a hollow structure in the middle. A plurality of V-shaped grooves are equally spaced on the outer edge of the first circular sheet, so that a first arc-shaped protrusion is formed between any two adjacent V-shaped grooves. A plurality of first through grooves for inserting the magnetic pole module are provided on the first arc-shaped protrusion;

[0017] A first structure for inserting the first support member is provided on the first arc-shaped protrusion on one side of the first through groove, and a second structure for inserting the second support member is provided on the first circular sheet on the other side of the first through groove.

[0018] Further, each second rotor punching sheet includes a second circular sheet with a hollow structure in the middle. A plurality of V-shaped grooves are equally spaced on the outer edge of the second circular sheet, so that a second arc-shaped protrusion is formed between any two adjacent V-shaped grooves. A plurality of second through grooves for inserting the magnetic pole module are provided on the second arc-shaped protrusion;

[0019] A plurality of the first arc-shaped protrusions and a plurality of the second arc-shaped protrusions are stacked to form a magnetic pole box, that is, the first through grooves and the second through grooves on the magnetic pole box are permanent magnet mounting holes.

[0020] Further, a non-driving end pressing mechanism for adjusting the axial position of the magnetic pole module is provided at the non-driving end of the rotor core. The non-driving end pressing mechanism includes a non-driving end retaining ring disposed on the outer surface of the first rotor punching. A vertical groove is formed in the non-driving end retaining ring to allow the vertical side of the L-shaped adjusting plate to extend into the magnetic pole box. The non-driving end of the rotor core is tightly fixed by sequentially passing bolts through the lock washer, the horizontal side of the L-shaped adjusting plate, a plurality of first adjusting washers, and the non-driving end retaining ring.

[0021] Further, a driving end pressing mechanism is provided at the driving end of the rotor core. The driving end pressing mechanism includes a driving end retaining ring disposed on the outer surface of the first rotor punching. A screw hole for the bolt to pass through is formed at a position close to the inner ring of the driving end retaining ring. An opening structure for sequentially inserting a dummy magnet and a second adjusting washer is formed at a position close to the outer ring of the driving end retaining ring. A magnetic pole pressing plate is disposed at the top of the second adjusting washer. The driving end of the rotor core is tightly fixed by sequentially passing bolts through the lock washer, the magnetic pole pressing plate, and the driving end retaining ring.

[0022] Further, the magnetic pole module is formed by splicing a plurality of sub-magnetic pole modules. Each sub-magnetic pole module includes a stainless steel frame body, and a plurality of magnets are installed in the stainless steel frame body;

[0023] The stainless steel frame body includes upper and lower stainless steel plates with the same structure and arranged oppositely;

[0024] Wherein, a plurality of third through grooves are spaced apart on the upper stainless steel plate,

[0025] A plurality of pairs of first flanges are arranged along the length direction of each third through groove on the stainless steel plate, and symmetric second flanges are arranged along the width direction of each third through groove on the stainless steel plate. The magnets are installed between adjacent third through grooves and are limited by the first flanges on both sides;

[0026] The stainless steel frame body further includes a plurality of first pads for supporting the upper and lower stainless steel plates. Each first pad is installed between the second flanges of the corresponding upper and lower two stainless steel plates, and the second flanges are used to limit the first pads.

[0027] Further, the stainless steel frame body further includes a plurality of second pads for supporting the upper and lower stainless steel plates. Third flanges are arranged oppositely at one end along the length direction of the stainless steel plates of the sub-magnetic pole modules at both ends;

[0028] On the stainless steel plate of the middle sub-magnetic pole module, opposite third flanges are provided at both ends along its length direction. The third flanges are used to assemble the sub-magnetic pole modules. Each of the second pads is located between the third flanges of the corresponding upper and lower stainless steel plates, and the third flanges are used to limit the second pads.

[0029] On the stainless steel plate of any one of the sub-magnetic pole modules, fourth flanges are respectively provided at both ends along its length direction and at the middle position.

[0030] Further, the width of the second pad is 1 / 2 times that of the first pad.

[0031] On the other hand, the present invention provides an assembly method for a rotor magnetic pole module. Based on the rotor magnetic pole module as described above, it includes the following steps:

[0032] Step 1: Assemble the magnetic pole module according to the structure of the rotor core, and then push the magnetic pole module into the magnetic pole box entrance at the drive end.

[0033] Among them, the assembly of the magnetic pole module is to select the structure of the sub-magnetic pole module according to the length of the rotor core, and then sequentially push the assembled sub-magnetic pole modules into the magnetic pole box entrance at the drive end.

[0034] It should be noted that during the process of loading the sub-magnetic pole module, during the process of loading each sub-magnetic pole module, the axial positioning of the sub-magnetic pole module is carried out by increasing or decreasing the number of first adjustment gaskets and adjusting the L-shaped adjustment plate at the non-drive end, so as to align the gaps between the magnetic steels with the gaps of the rotor core and achieve the best heat dissipation state.

[0035] Step 2: After installing the magnetic pole module, then assemble the drive end pressing mechanism at the drive end to press and fix the end face of the magnetic pole module, that is, complete the assembly of one row of magnetic pole modules, and complete the assembly of the remaining magnetic pole modules in the above manner.

[0036] Among them, after installing one row of sub-magnetic pole modules, install false magnetic steels and a plurality of second adjustment gaskets with different thicknesses at the drive end to make the top surface of the drive end contact the bottom surface of the drive end pressing ring, and finally press and fix the end face of the sub-magnetic pole module with a magnetic pole pressing plate and fix it with bolts.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] 1) A rotor pole module provided by the present invention, by designing a pole module and a rotor core adapted thereto, the rotor core replaces the original single pole box laminated by sector sheets, but connects the pole boxes into a whole in the circumferential direction, with high structural strength and improved strength of the rotor core. The pole module integrates multiple permanent magnets onto a stainless steel frame, and then sequentially pushes the stainless steel frame assembled with permanent magnets into the pole box of the rotor core (i.e., into the permanent magnet mounting hole), and the permanent magnet mounting hole plays a guiding role in the axial direction.

[0039] 2) A rotor pole module provided by the present invention uses a stainless steel frame to fix permanent magnets, with a simple structure, omits the pressing tooling for each permanent magnet, solves the problem of increased repulsive force between rotor pole boxes causing tipping, and at the same time improves the assembly efficiency, saving labor costs and time.

[0040] 3) A rotor pole module provided by the present invention has an equal-distance gap between each permanent magnet of the pole module, omits the ventilation channel steel inside the rotor core, saves materials and reduces costs.

[0041] 4) A rotor pole module provided by the present invention can freely adjust the first adjustment pad, the second adjustment pad, the dummy permanent magnet or the L-shaped adjustment plate for positioning by respectively arranging pressing mechanisms at the driving end and the non-driving end of the rotor core, so as to achieve efficient heat dissipation of the motor.

[0042] 5) An assembly method of a rotor pole module provided by the present invention replaces the installation method of single permanent magnets by setting a pole module, and at the same time cancels the radial fastening bolts of the rotor pole box, solves the problem of bolt loosening, simplifies the rotor assembly, and greatly improves the assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The accompanying drawings here are incorporated into the specification and form a part of this specification, and are used together with the specification to explain the principles of the present invention.

[0044] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0045] Figure 1 It is a schematic structural diagram of the pressing mechanism at the non-driving end of the rotor core of the present invention;

[0046] Figure 2 For Figure 1 A cross-sectional view of the rotor core along the A-A direction;

[0047] Figure 3 ForFigure 2 Schematic diagram of the enlarged structure at the drive end;

[0048] Figure 4 For Figure 2 Schematic diagram of the enlarged structure at the non-drive end;

[0049] Figure 5 Schematic diagram of the first rotor punching sheet structure of the rotor core of the present invention;

[0050] Figure 6 Schematic diagram of the second rotor punching sheet structure of the rotor core of the present invention;

[0051] Figure 7 View of the drive end of the rotor core of the present invention;

[0052] Figure 8 Schematic diagram of the structure of the sub-pole module of the present invention;

[0053] Figure 9 Schematic diagram of the stainless steel frame structure of the sub-pole module of the present invention;

[0054] Figure 10 Schematic diagram of the first spacer structure of the sub-pole module of the present invention;

[0055] Figure 11 Schematic diagram of the first support structure of the rotor core of the present invention;

[0056] Figure 12 Schematic diagram of the second support structure of the rotor core of the present invention.

[0057] Wherein: 1 is the rotor core; 11 is the first rotor punching sheet; 12 is the second rotor punching sheet; 13 is the pole box; 111 is the first circular sheet; 121 is the second circular sheet; 1111 is the first arc-shaped protrusion; 1112 is the second structure; 1211 is the second arc-shaped protrusion; 11111 is the first through groove; 11112 is the first structure; 12111 is the second through groove;

[0058] 2 is the pole module; 21 is the sub-pole module; 211 is the stainless steel frame; 212 is the permanent magnet; 2111 is the stainless steel plate; 2112 is the first spacer; 21111 is the third through groove; 21112 is the first flanging; 21113 is the second flanging; 21114 is the third flanging; 21115 is the fourth flanging;

[0059] 3 is the non-drive end pressing mechanism; 31 is the non-drive end retaining ring; 32 is the L-shaped adjusting plate; 33 is the first adjusting gasket; 311 is the vertical groove;

[0060] 4 is the drive end pressing mechanism; 41 is the drive end retaining ring; 42 is the dummy permanent magnet; 43 is the second adjusting gasket; 44 is the pole pressing plate. Detailed implementation manners

[0061] Here, exemplary embodiments will be described in detail. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. On the contrary, they are merely examples consistent with some aspects of the present invention detailed in the appended claims.

[0062] On the one hand, referring to Figures 1 - 12 , an embodiment of the present invention provides a rotor pole module, which includes stacking a plurality of first rotor punching sheets 11 and a plurality of second rotor punching sheets 12 in a specific manner to form a rotor core 1, and a pole module 2;

[0063] The pole module 2 is assembled in the pole box 13 of the rotor core 1 by means of pushing.

[0064] Further, first stack a plurality of sub-rotor cores in the order of at least one first rotor punching sheet 11 - at least one second rotor punching sheet 12 - at least one first rotor punching sheet 11, and then stack the plurality of sub-rotor cores axially along the rotor, and arrange a first support member and a second support member between the adjacent upper and lower sub-rotor cores, that is, stack to form the rotor core 1.

[0065] Specifically, in this embodiment, each sub-rotor core is 80 sheets, the upper first rotor punching sheet 11 is 10 sheets, the middle second rotor punching sheet 12 is 60 sheets, and the lower first rotor punching sheet 11 is 10 sheets. The thickness of each first rotor punching sheet 11 and second rotor punching sheet 12 is 0.5 mm, which can be freely adjusted according to the actual requirements of the rotor core without limitation.

[0066] As Figure 5 shown, each of the first rotor punching sheets 11 includes a first circular sheet 111 with a hollow structure in the middle. A plurality of V-shaped grooves are equidistantly arranged on the outer edge of the first circular sheet 111, so that a first arc-shaped protrusion 1111 is formed between any two adjacent V-shaped grooves. A plurality of first through grooves 11111 for inserting the pole module 2 are provided on the first arc-shaped protrusion 1111;

[0067] On the first arc-shaped protrusion 1111, a first structure 11112 for inserting the first support member is provided on one side of the first through groove 11111, and a second structure 1112 for inserting the second support member is provided on the first circular sheet 111 on the other side of the first through groove 11111.

[0068] Specifically, in this embodiment, the first support member is as Figure 11The structure shown is specifically a first cylinder, a second cylinder, and a first cylinder arranged coaxially from top to bottom. The first support member is integrally formed. For the structure of the first support member, a first structure 11112 is set as a through hole, and the upper first cylinder is inserted into the corresponding through hole above, and the lower first cylinder is inserted into the corresponding through hole below; in addition, the second support member is as Figure 12 shown in the structure, which specifically includes a long rectangular plate. Two pairs of short rectangular plates are connected to the upper side and the lower side of the long rectangular plate respectively. The second support member is integrally formed. For the structure of the second support member, a second structure 1112 is set as a rectangular groove, and the upper short rectangular plate is inserted into the corresponding rectangular groove above, and the lower short rectangular plate is inserted into the corresponding rectangular groove below. The first support member and the second support member are used to separate the pole box 13 at intervals to achieve better heat dissipation.

[0069] As Figure 6 shown, each of the second rotor laminations 12 includes a second circular plate 121 with a hollow structure in the middle. A plurality of V-shaped grooves are equally spaced on the outer edge of the second circular plate 121, so that a second arc-shaped protrusion 1211 is formed between any two adjacent V-shaped grooves. A plurality of second through grooves 12111 for inserting the pole module 2 are formed on the second arc-shaped protrusion 1211;

[0070] A plurality of the first arc-shaped protrusions 1111 and a plurality of the second arc-shaped protrusions 1211 are stacked to form the pole box 13.

[0071] As Figure 2 and 4 shown, a non-driving end pressing mechanism 3 for adjusting the axial position of the pole module 2 is provided at the non-driving end of the rotor core 1. The non-driving end pressing mechanism 3 includes a non-driving end pressing ring 31 provided on the outer surface of the first rotor lamination 11. A vertical groove 311 is formed on the non-driving end pressing ring 31 to enable the vertical side of the L-shaped adjusting plate 32 to extend into the pole box 13. The non-driving end of the rotor core 1 is tightly fixed by sequentially passing bolts through the lock washer, the horizontal side of the L-shaped adjusting plate 32, a plurality of first adjusting washers 33 with different thicknesses, and the non-driving end pressing ring 31.

[0072] As Figure 2 、 3As shown in FIGS. 6 and 7, a driving end pressing mechanism 4 is provided at the driving end of the rotor core 1. The driving end pressing mechanism 4 includes a driving end retaining ring 41 provided on the outer surface of the first rotor punching 11. A screw hole for a bolt to pass through is provided on the driving end retaining ring 41 near its inner ring, and the bolt is passed through the screw hole to fix the driving end of the rotor core 1. An opening structure for inserting a dummy magnet 42 and a second adjusting gasket 43 in sequence is provided on the driving end retaining ring 41 near its outer ring. A pole pressing plate 44 is provided at the top of the second adjusting gasket 43, and the driving end of the rotor core 1 is tightly fixed by passing the bolt through the lock washer, the pole pressing plate 44 and the driving end retaining ring 41 in sequence. This structure achieves double fixation, and the number and thickness of the second adjusting gaskets 43 can be flexibly set by disassembling the pole pressing plate 44.

[0073] As Figure 8 and 9 shown, the pole module 2 is composed of a plurality of sub-pole modules 21 spliced together. Each sub-pole module 21 includes a stainless steel frame 211, and a plurality of magnets 212 are installed in the stainless steel frame 211.

[0074] The stainless steel frame 211 includes upper and lower stainless steel plates 2111 with the same structure and arranged oppositely.

[0075] Among them, a plurality of third through grooves 21111 are spaced apart on the stainless steel plate 2111.

[0076] On the stainless steel plate 2111, two pairs of first flanges 21112 are arranged along the length direction of each third through groove 21111, and symmetric second flanges 21113 are arranged along the width direction of each third through groove 21111. The magnet 212 is installed between adjacent third through grooves 21111 and is limited by the first flanges 21112 on both sides.

[0077] The stainless steel frame 211 further includes a plurality of first pads 2112 for supporting the upper and lower stainless steel plates. Each first pad 2112 is installed between the second flanges 21113 of the corresponding upper and lower two stainless steel plates.

[0078] In this embodiment, anaerobic sealant is used to bond between the upper and lower stainless steel plates, the first pads 2112, the second pads and the magnets 212 to form a structurally firm sub-pole module 21. Specifically, the first pads 2112 are made of epoxy resin.

[0079] As Figures 8 - 9As shown, the stainless - steel frame 211 further includes a plurality of second cushion blocks for supporting the upper and lower stainless - steel plates. On the stainless - steel plate 2111 of the sub - magnetic pole module 21 at both ends, opposite third flanges 21114 are provided at one end along its length direction;

[0080] On the stainless - steel plate 2111 of the middle sub - magnetic pole module 21, opposite third flanges 21114 are provided at both ends along its length direction. Each second cushion block is located between the third flanges 21114 of the corresponding upper and lower two stainless - steel plates;

[0081] On the stainless - steel plate 2111 of any one of the sub - magnetic pole modules 21, fourth flanges 21115 are provided at both ends along its length direction and at the middle position.

[0082] It should be noted that the function of the third through - slots 21111 and the second flanges 21113 arranged at intervals is to axially limit and position the magnetic steel 212 at intervals; the function of the two pairs of first flanges 21112 and fourth flanges 21115 is to fix the end faces of the corresponding magnetic steel 212. Fixing the magnetic steel 212 through each flange creates an equidistant gap between the magnetic steels 212, eliminating the original ventilation channel steel inside the rotor core. This gap creates good conditions for the heat dissipation of the motor rotor and is especially suitable for air - cooled motors.

[0083] Furthermore, the width of the second cushion block is 1 / 2 of that of the first cushion block 2112.

[0084] In this embodiment, the second cushion block and the first cushion block 2112 have different thicknesses. They are installed inside the corresponding flanges and axially arranged between the magnetic steels 212 to axially limit and fix the magnetic steel 212, preventing relative displacement between the magnetic steel 212 and the stainless - steel frame 211 during assembly and operation.

[0085] It should be noted that the specifications of the sub - magnetic pole module 21 (i.e., the number and size of the magnetic steel 212) are not limited. According to different motor designs, it can be divided into forms with several magnetic steels, such as Figure 8 for 6 magnetic steels 212, such as Figure 9 for 5 magnetic steels 212. Generally, the sub - magnetic pole modules 21 with a larger number are at both ends, and those with a smaller number are in the middle. Therefore, such as Figure 8 only one end is provided with a third flange 21114, and the other end is a plane, serving as the starting end for assembly, Figure 9 both ends of

[0086] On the other hand, the embodiment of the present invention also provides an assembly method for a rotor magnetic pole module, including the following steps:

[0087] Step 1: Assemble the pole module 2 according to the structure of the rotor core 1, and then push the pole module 2 into the inlet of the pole box 13 at the drive end;

[0088] Step 2: After installing the pole module 2, assemble the drive-end pressing mechanism 4 at the drive end to press and fix the end face of the pole module 2, that is, complete the assembly of one-pole pole module 2, and complete the assembly of the remaining pole modules 2 in the above manner.

[0089] Among them, in this embodiment, according to the length of the rotor core 1 in this embodiment, the sub-pole module 21 is divided into two structures, one is the sub-pole module 21 containing 5 magnetic steels 212, and the other is the sub-pole module 21 containing 6 magnetic steels 212, as Figure 2 shown, in the following order: the sub-pole module 21 with 6 magnetic steels 212 → the sub-pole module 21 with 5 magnetic steels 212 → the sub-pole module 21 with 5 magnetic steels 212 → the sub-pole module 21 with 5 magnetic steels 212 → the sub-pole module 21 with 6 magnetic steels 212, then the assembly of one row of pole modules can be completed. In this embodiment, the same pole is designed with 3 rows of pole modules (that is, 3 parallel permanent magnet mounting holes are opened on each pole box 13), and repeating 2 times can complete the assembly of the rotor pole module of one pole;

[0090] It should be noted that the adjacent sub-pole modules 21 in the axial direction of the generator are assembled by the side of the third flanging 21114 to complete the assembly of the pole module 2.

[0091] Especially note that for different lengths of the rotor core 1, the pole module 2 combinations can also be reasonably matched. For example: 1 sub-pole module 21 with 5 magnetic steels 212 → several sub-pole modules 21 with 6 magnetic steels 212 → 1 sub-pole module 21 with 5 magnetic steels 212. Generally speaking, the pole module 2 is usually divided into two types: 5 magnetic steels 212 or 6 magnetic steels 212, and can also be divided into other combinations such as 4 magnetic steels 212 or 7 magnetic steels 212.

[0092] Specifically, during the process of installing the sub-pole module 21, after each sub-pole module 21 is installed, the axial position of the sub-pole module 21 is adjusted by increasing or decreasing the number of the first adjusting gaskets 33 and adjusting the L-shaped adjusting plate 32 at the non-drive end, so that the gap between the magnetic steels 212 is aligned with the gap of the rotor core 1 (that is, the ventilation ducts are aligned) to achieve the best heat dissipation state;

[0093] Among them, after installing one row of sub-pole modules 21, install the dummy magnet 42 and multiple second adjusting gaskets 43 with different thicknesses at the drive end to make the top surface of the drive end contact with the bottom surface of the drive-end retaining ring 41, and finally use the pole pressing plate 44 to press and fix the end face of the sub-pole module 21 with bolts.

[0094] The above are only specific embodiments of the present invention, enabling those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention.

[0095] It should be understood that the present invention is not limited to the content already described above, and various modifications and changes can be made without departing from its scope. The scope of the present invention is only limited by the appended claims.

Claims

1. A rotor pole module, characterized in that, It includes stacking a number of first rotor laminations (11) and a number of second rotor laminations (12) in a specific manner to form a rotor core (1), and a pole module (2); The pole module (2) is assembled in a pole box (13) of the rotor core (1) by a pushing method.

2. The rotor pole module according to claim 1, wherein The specific manner is as follows: First, stack at least one first rotor lamination (11) - at least one second rotor lamination (12) - at least one first rotor lamination (11) in sequence to form a plurality of sub-rotor cores, and then stack the plurality of sub-rotor cores axially along the rotor, and arrange a first support member and a second support member between adjacent upper and lower sub-rotor cores, that is, stack to form the rotor core (1).

3. The rotor pole module according to claim 2, wherein Each first rotor lamination (11) includes a first disc (111) with a hollow structure in the middle. A plurality of V-shaped grooves are equidistantly arranged on the outer edge of the first disc (111), so that a first arc-shaped protrusion (1111) is formed between any two adjacent V-shaped grooves. A number of first through grooves (11111) for inserting the pole module (2) are arranged on the first arc-shaped protrusion (1111); On the first arc-shaped protrusion (1111), on one side of the first through groove (11111), a first structure (11112) for inserting the first support member is arranged. On the first disc (111), on the other side of the first through groove (11111), a second structure (1112) for inserting the second support member is arranged.

4. The rotor magnetic pole module according to claim 3, characterized in that, Each second rotor lamination (12) includes a second disc (121) with a hollow structure in the middle. A plurality of V-shaped grooves are equidistantly arranged on the outer edge of the second disc (121), so that a second arc-shaped protrusion (1211) is formed between any two adjacent V-shaped grooves. A number of second through grooves (12111) for inserting the pole module (2) are arranged on the second arc-shaped protrusion (1211); A number of the first arc-shaped protrusions (1111) and a number of the second arc-shaped protrusions (1211) are stacked to form the pole box (13).

5. The rotor pole module according to claim 1, characterized in that A non-driving end pressing mechanism (3) is arranged at the non-driving end of the rotor core (1). The non-driving end pressing mechanism (3) includes a non-driving end retaining ring (31) arranged on the outer surface of the first rotor lamination (11). A vertical groove (311) is arranged on the non-driving end retaining ring (31) to enable the vertical side of the L-shaped adjusting plate (32) to extend into the pole box (13). The non-driving end of the rotor core (1) is tightly fixed by sequentially passing bolts through a lock washer, the horizontal side of the L-shaped adjusting plate (32), a number of first adjusting gaskets (33), and the non-driving end retaining ring (31).

6. The rotor pole module according to claim 1, characterized in that A driving end pressing mechanism (4) is provided at the driving end of the rotor core (1). The driving end pressing mechanism (4) includes a driving end retaining ring (41) disposed on the outer surface of the first rotor punching (11). A screw hole for a bolt to pass through is provided on the driving end retaining ring (41) near its inner ring. An opening structure for inserting a dummy magnet (42) and a second adjusting gasket (43) in sequence is provided on the driving end retaining ring (41) near its outer ring. A pole plate (44) is disposed at the top of the second adjusting gasket (43). The driving end of the rotor core (1) is tightly fixed by passing a bolt through a lock washer, the pole plate (44), and the driving end retaining ring (41) in sequence.

7. The rotor magnetic pole module according to claim 1, wherein The pole module (2) is formed by splicing a plurality of sub-pole modules (21). Each sub-pole module (21) includes a stainless steel frame (211), and a plurality of magnets (212) are installed in the stainless steel frame (211); The stainless steel frame (211) includes stainless steel plates (2111) with the same structure and oppositely arranged upper and lower parts; Wherein, a plurality of third through slots (21111) are spaced apart on the stainless steel plate (2111), A plurality of pairs of first flanges (21112) are arranged on the stainless steel plate (2111) along the length direction of each third through slot (21111), and symmetric second flanges (21113) are arranged on the stainless steel plate (2111) along the width direction of each third through slot (21111). The magnet (212) is installed between adjacent third through slots (21111) and is limited by the first flanges (21112) on both sides; The stainless steel frame (211) further includes a plurality of first pads (2112) for supporting the upper and lower stainless steel plates. Each first pad (2112) is installed between the second flanges (21113) of the corresponding upper and lower two stainless steel plates.

8. The rotor pole module according to claim 7, characterized in that, The stainless steel frame (211) further includes a plurality of second pads for supporting the upper and lower stainless steel plates. Third flanges (21114) are arranged oppositely at one end of the stainless steel plate (2111) of the sub-pole module (21) at both ends along its length direction; Third flanges (21114) are arranged oppositely at both ends of the stainless steel plate (2111) of the middle sub-pole module (21) along its length direction. Each second pad is located between the third flanges (21114) of the corresponding upper and lower two stainless steel plates; Fourth flanges (21115) are respectively arranged at the middle positions at both ends of the stainless steel plate (2111) of any one of the sub-pole modules (21) along its length direction.

9. The rotor pole module according to claim 8, characterized in that The width of the second pad is 1 / 2 of that of the first pad (2112).

10. An assembly method for a rotor magnetic pole module, characterized in that, Based on the rotor pole module according to any one of claims 1 to 9, the following steps are included: Step 1: Assemble the pole module (2) according to the structure of the rotor core (1), and then push the pole module (2) into the inlet of the pole box (13) at the driving end; Step 2: After installing the magnetic pole module (2), then assemble the driving end pressing mechanism (4) at the driving end to press and fix the end face of the magnetic pole module (2), that is, complete the assembly of one row of magnetic pole modules (2), and complete the assembly of the remaining magnetic pole modules (2) in the above manner.

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