CN118282084A - Stacked rotor module and stacking method - Google Patents

Abstract

The invention discloses a superposition type rotor module and a superposition method, belonging to the technical field of traction machines, wherein the superposition type rotor module comprises two rotor cores, and the two rotor cores are superposed to form the rotor module; the rotor iron core includes mounting groove, first keyway, second keyway and shaft hole, with mounting groove, first keyway, the radial distribution of second keyway in the main part just staggers and set up, laminate the reverse side of two rotor iron cores and form first module, the reverse side laminating of two rotor iron cores forms the second module, then rotatory 180 with the second module, the front laminating of second module and the front of first module, make four rotor iron cores have four keyways that can be used to the complex, and four idle keyways, four idle keyways just-reverse-just-reverse stagger, on rotor module's whole counter weight, with the arbitrary axis of rotor module split two parts counter weight equal, need not dynamic balance operation, reduce rotor module's installation step, and the mounting means is simple moreover.

Description

Stacked rotor module and stacking method

Technical Field

The invention belongs to the technical field of traction machines, and particularly relates to a superposition type rotor module and a superposition method.

Background

The hoisting machine is the core drive component of the elevator, called the "heart" of the elevator. The traction machine is provided with a rotor module and a stator core, wherein the rotor module is used for being matched with the stator core, and the rotor module rotates around the stator core under the condition that the stator core is conductive, so that traction force is provided for a lift car of an elevator.

In the combined rotor module, the rotor module is formed by superposing a plurality of rotor cores, and each rotor core is used for installing magnetic steel. In order to reduce the processing cost, each rotor iron core is produced and processed by adopting the same die, so that the cost can be reduced. However, two rotor cores are overlapped to form a rotor module, and two adjacent magnetic steels are completely overlapped in the axial line direction of the rotor module; in the circumference of rotor module, there is the space between two adjacent magnet steel, leads to the magnetic field on the rotor module to have the uneven phenomenon of distribution, and when rotor module and stator core joined in marriage, the hauler appears the rotational speed inhomogeneous, and the vibration is great, leads to hauler reliability to reduce.

In order to make the magnetic field distribution on the rotor module even, some manufacturers currently adopt a diagonal layout mode on the installation of the magnetic steel, and the diagonal layout mode can make the magnetic field distribution on the rotor module even. However, in the diagonal layout mode, the rotor core punched out by the same die is adopted, and after the rotor core is assembled, the overall quality of the rotor module needs to reach dynamic balance. The conventional operation mode of the existing dynamic balance is to utilize a balancing weight for configuration; however, the staggering of the keyways within the rotor core, and the staggering of the plurality of connecting holes on the rotor core, results in a high requirement for the assembly operator on the balancing weights of the rotor modules; in summary, the existing rotor module is extremely complex in the assembly process.

Disclosure of Invention

The invention aims to solve the problem that the assembly process of the existing rotor module is extremely complex, and provides a superposition type rotor module and a superposition method.

The technical scheme for achieving the purpose comprises the following steps:

A superposition type rotor module comprises at least two rotor cores, wherein the two rotor cores are superposed to form the rotor module; the rotor core comprises a main body, a shaft hole, a clamping part and a plurality of mounting grooves, wherein the shaft hole penetrates through one side of the main body to the other side; the mounting grooves are formed in the main body, the mounting grooves are distributed at equal intervals along the circumferential direction of the main body, and the clamping parts are formed in the inner wall of the main body and are communicated with the shaft holes;

the mounting grooves and the clamping portions are distributed in the radial direction of the main body, and the mounting grooves and the clamping portions are staggered in the radial direction of the main body.

In one implementation, the midpoints of the two corresponding mounting grooves are connected to form a first axis, and the axle center of the main body is positioned on the first axis; the clamping part comprises a first key groove and a second key groove, the first key groove and the second key groove are oppositely arranged, the middle points of the first key groove and the second key groove are connected to form a second axis, and the axis of the main body is staggered with the second axis.

In one embodiment, at least part of the two first keyways of the two rotor cores overlap in the axial direction of the rotor module, and at least part of the two second keyways of the two rotor cores are staggered.

In one embodiment, in the axial line direction of the rotor module, two corresponding mounting grooves in the two rotor cores are arranged in a staggered manner, and the mounting grooves are used for accommodating magnetic steel; the magnetic steels are staggered in the axial lead direction of the rotor module, so that the magnetic fields generated by the magnetic steels are covered on the circumferential direction of the rotor module.

In one embodiment, the main body is provided with two groups of connecting through holes, and the two groups of connecting through holes are oppositely arranged; the connecting through holes are used for the bolts to pass through so that the two rotor iron cores are connected through the bolts.

In one embodiment, the connecting through hole comprises two first mounting holes, two second mounting holes and two third mounting holes, the two first mounting holes, the two second mounting holes and the two third mounting holes are distributed at equal intervals along the circumferential direction of the main body, the two first mounting holes are distributed along the radial direction of the main body, the two second mounting holes are distributed along the radial direction of the main body, and the two third mounting holes are distributed along the radial direction of the main body;

When the two rotor cores are in a superposition state, any one of the first mounting holes, any one of the second mounting holes and any one of the second mounting holes in the two rotor cores correspond to each other.

The invention also provides a superposition method of the rotor module, which comprises the following steps:

step one, superposing first bonding surfaces of two rotor cores to form a first module;

Step two, superposing the first bonding surfaces of the two rotor cores and forming a second module;

And thirdly, rotating the second module by 180 degrees, and superposing the second bonding surface of the second module and the second bonding surface of the first module.

In one embodiment, the mounting grooves, the first key groove and the second key groove are distributed in the radial direction of the main body, the mounting grooves and the first key groove or the second key groove are staggered by an angle A in the radial direction of the main body, and the total number of the mounting grooves is even;

When 2A > b, the superposition layer number S=360/2 A= [180/A ] of the rotor module;

Wherein 2A is the dislocation angle of two adjacent magnetic steels in the axial lead direction of the rotor module; s is the number of superimposed layers of the rotor module, and S is more than or equal to 2; b is the circumferential angle corresponding to the width of the key groove.

In one embodiment, when 2A is less than or equal to b and C/n is less than b/2A, i.e., each rotor core has a key slot therein, then s= [2C/n ];

when 2A is less than or equal to b and C/n > (360/n-b)/2A, i.e., there is no keyway in each rotor core, s=2 [ (a-b)/2A ];

When the ratio of b to b is less than or equal to 2A and the ratio of b/2A to C/n is less than or equal to (360/n-b)/2A, at least two key grooves are formed in each rotor iron core; s=2 [ (360/n-2 b-2A)/2A ] +2=2 [ (180/n-b-a)/a ] +2;

Wherein 2A is the dislocation angle of two adjacent magnetic steels in the axial lead direction of the rotor module; a is a circumferential angle corresponding to the width of the mounting groove; n is the number of key slots in the rotor module for matching; s is the total superposition layer number of the rotor module, and S is more than or equal to 2; b is a circumferential angle corresponding to the width of the key groove; n is the total number of keyways in the rotor module; c is the total number of mounting slots in each rotor core.

In one embodiment, the total number of keyways of the rotor module is n=sn/2;

wherein N is the total number of keyways in the rotor module; s is the total superposition layer number of the rotor module, and S is more than or equal to 2; n is the number of key slots in the rotor module for mating.

The technical scheme provided by the invention has the following advantages and effects:

The clamping part is arranged on the inner wall of the main body and used for installing a key, the shaft hole is used for the rotating shaft to pass through, and the rotating shaft is installed in the clamping part through the key after passing through the shaft hole, so that the rotating shaft is connected with the main body through the key; the mounting groove is used for accommodating magnetic steel, the magnetic steel rotates after being matched with the stator iron core, and provides power for the rotating shaft, so that a traction wheel of the traction machine has traction force. The plurality of mounting grooves are distributed along the circumference of the main body at equal intervals, so that a plurality of magnetic steels are arranged on the circumference of the main body, and the circumference of the rotor core is provided with a magnetic field. The clamping parts and the mounting grooves are distributed in the radial direction of the main body and are staggered, so that the mounting grooves and the clamping parts have deviation, and when two rotor cores are overlapped, under the condition that the two clamping parts of the two rotor cores are aligned, two pieces of magnetic steel are staggered necessarily in the axial lead direction of the rotor module, so that the magnetic steel mounting of the rotor module meets the oblique running mode. On the whole counter weight of rotor module to two parts counter weights that arbitrary axis of rotor module cut apart all equal, make the rotor module need not to install the balancing weight in addition after the stack, need not dynamic balance operation, reduce the installation step of rotor module, the mounting means is simple moreover.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles and effects of the invention.

Unless specifically stated or otherwise defined, the same reference numerals in different drawings denote the same or similar technical features, and different reference numerals may be used for the same or similar technical features.

FIG. 1 is a schematic diagram of a rotor module according to an embodiment of the present invention;

FIG. 2 is a schematic front view of a rotor core according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a rotor core according to an embodiment of the present invention;

FIG. 4 is a schematic view of a four rotor core according to an embodiment of the present invention with a corresponding key slot n available;

Fig. 5 is a schematic diagram of a stacked four rotor cores according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of two mounting slots corresponding to two stacked rotor cores according to an embodiment of the present invention;

Reference numerals illustrate:

100. A rotor core; 10. a first module; 20. a second module; 30. the direction of the axis line; 1. a main body; 2. a mounting groove; 3. a first keyway; 4. a second keyway; 5. a connecting through hole; 51. a first mounting hole; 52. a second mounting hole; 53. a third mounting hole; 6. a shaft hole; 7. an axle center; 8. a first axis; 9. a second axis; G. a first rotor core; w, a second rotor core; H. a third rotor core; I. a fourth rotor core; 200. a rotor module.

Detailed Description

In order that the invention may be readily understood, a more particular description of specific embodiments thereof will be rendered by reference to specific embodiments that are illustrated in the appended drawings.

The terms "first" and "second" … "as used herein, unless specifically indicated or otherwise defined, are merely used to distinguish between names and do not denote a particular quantity or order.

The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items, unless specifically stated or otherwise defined.

It will be understood that when an element is referred to as being "fixed" to another element, it can be directly fixed to the other element or intervening elements may also be present; when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present; when an element is referred to as being "mounted to" another element, it can be directly mounted to the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present.

As shown in fig. 1 to 6, a rotor module 200 includes at least two rotor cores 100, and the two rotor cores 100 are stacked to form the rotor module 200; the rotor core 100 includes a main body 1, a shaft hole 6, an engaging portion, and a plurality of mounting grooves 2, wherein the shaft hole 6 penetrates from one side to the other side of the main body 1; the mounting grooves 2 are formed in the main body 1, the plurality of mounting grooves 2 are distributed at equal intervals along the circumferential direction of the main body 1, and the clamping parts are formed in the inner wall of the main body 1 and are communicated with the shaft hole 6; the mounting grooves 2 and the engaging portions are distributed in the radial direction of the main body 1, and the mounting grooves 2 and the engaging portions are staggered in the radial direction of the main body 1.

The clamping part is arranged on the inner wall of the main body 1 and used for installing a key, the shaft hole 6 is used for allowing the rotating shaft to pass through, and the rotating shaft is installed in the clamping part through the key after passing through the shaft hole 6, so that the rotating shaft is connected with the main body 1 through the key; the mounting groove 2 is used for accommodating magnetic steel, the magnetic steel rotates after being matched with the stator core, and provides power for the rotating shaft, so that a traction wheel of the traction machine has traction force. The plurality of mounting grooves 2 are equidistantly distributed along the circumferential direction of the main body 1, and a plurality of magnetic steels are arranged in the circumferential direction of the main body 1, so that the rotor core 100 has a magnetic field in the circumferential direction. The clamping parts and the mounting grooves 2 are distributed and staggered in the radial direction of the main body 1, so that the mounting grooves 2 and the clamping parts have deviation, and when the two rotor cores 100 are overlapped, under the condition that the two clamping parts of the two rotor cores 100 are aligned, the two magnetic steels are staggered necessarily in the axial lead direction of the rotor module 200, so that the magnetic steel mounting of the rotor module 200 meets the diagonal mode. On the whole counter weight of rotor module 200, with the two parts counter weights that arbitrary axis of rotor module 200 cut apart equal, make rotor module 200 need not to install the balancing weight in addition after the stack, need not dynamic balance operation, reduce rotor module 200's installation step, the mounting means is simple moreover.

The assembly principle of the stacked rotor module is as follows: the clamping portion comprises a first key groove 3 and a second key groove 4, the first key groove 3 and the second key groove 4 are oppositely arranged, the mounting groove 2, the first key groove 3 and the second key groove 4 are distributed and staggered in the radial direction of the main body 1, and the mounting groove 2 and the first key groove 3 or the second key groove 4 are deviated. When a plurality of rotor cores 100 are stacked, the back surfaces of the two rotor cores 100 are bonded to form a first module 10, the back surfaces of the two rotor cores 100 are bonded to form a second module 20, then the second module 20 is rotated 180 degrees, and the front surface of the second module 20 is bonded to the front surface of the first module 10. The two first key grooves 3 of the first module 10 are corresponding, the two second key grooves 4 of the second module 20 are corresponding, the second key grooves 4 of the second module 20 are corresponding to the first key grooves 3 of the first module 10, that is, after the four rotor cores 100 are overlapped, one key groove corresponds to each rotor core 100 in the four rotor cores 100; because the key groove and the mounting groove 2 are staggered in the radial direction of the main body 1, under the condition that the key grooves of the plurality of rotor cores 100 correspond to each other, the mounting groove 2 on each rotor core 100 is necessarily in a staggered state in the axial line direction 30 of the rotor module 200, so that the magnetic steel mounting of the rotor module 200 meets the diagonal mode.

In addition, the two second key grooves 4 of the first module 10 are staggered in the forward direction, the two first key grooves 3 of the second module 20 are staggered in the forward direction, and the first key grooves 3 of the first module 10 correspond to the second key grooves 4 of the second module 20; one of the second keyways 4 in the first die set 10 is offset in opposite directions from one of the first keyways 3 in the second die set 20 such that the four rotor cores 100 have four keyways available for mating, and four unused keyways that are offset in a positive-negative-positive-negative direction. On the whole counter weight of rotor module 200, with the two parts counter weights that arbitrary axis of rotor module 200 cut apart equal, make rotor module 200 need not to install the balancing weight in addition after the stack, need not dynamic balance operation, reduce rotor module 200's installation step, the mounting means is simple moreover.

In the dynamic balance of the rotor module 200, because each rotor core 100 is produced by stamping with the same die, the structural layout and the weight of each rotor core 100 are equal, so that after the rotor cores 100 are stacked, two idle keyways in two adjacent rotor cores 100 are equal in dislocation distance. Therefore, when the key grooves for matching in the plurality of rotor cores 100 are in the corresponding state, the plurality of unused key grooves are reciprocally offset, and the offset distances are the same, so that the weights of the two portions divided by any central axis of the rotor module 200 are equal. The structural layout is also completely in uniform distribution, and the dynamic balance test is completely satisfied; the oblique distribution of the magnetic steel is also satisfied, the magnetic field distribution in the circumferential direction of the rotor module 200 is uniform, and when the rotor module 200 is used, the vibration amplitude of the traction machine is small, the operation is stable, and the noise is low; and the same die is adopted for stamping production and manufacturing, and the manufacturing cost is low.

As shown in fig. 2 to 3, the midpoints of the two corresponding mounting grooves 2 are connected to form a first axis 8, and the axle center 7 of the main body 1 is located on the first axis 8; the first key groove 3 is connected with the midpoint of the second key groove 4 to form a second axis 9, and the axis 7 of the main body 1 is staggered from the second axis 9. In the present embodiment, the axial center 7 of the main body 1 is located on the first axis 8, so that ten mounting grooves 2 are equally distributed with the axial center 7 of the main body 1. The shaft center 7 of the main body 1 is staggered from the second shaft axis 9, so that the centers of the first key groove 3, the second key groove 4 and the mounting groove 2 are in a staggered state, when a plurality of rotor cores 100 are stacked, key grooves for matching in each rotor core 100 must correspond, so that the rotor module 200 is connected with a rotating shaft key through keys, and after the key grooves for matching are opposite, the mounting grooves 2 in the plurality of rotor cores 100 are necessarily in a staggered state in the shaft axis direction 30 of the rotor module 200. The staggering mode can be realized by a superposition mode, wherein the superposition mode is that the reverse sides of the two rotor cores 100 are laminated and superposed to form a first module 10, and the two rotor cores 100 are laminated and superposed to form a second module 20; the second module 20 rotates 180 °, and the front surface of the second module 20 is attached to and overlapped with the front surface of the first module 10, so that the rotor module 200 is in the state of fig. 1 and 5 after being overlapped.

As shown in fig. 1 to 3, at least part of the two first keyways 3 of the two rotor cores 100 overlap and at least part of the second keyways 4 of the two rotor cores 100 are offset in the axial direction 30 of the rotor module 200. In the present embodiment, at least part of the two first key grooves 3 of the two rotor cores 100 overlap, for the two rotor cores 100 to have two key grooves therein that can be used to mate with keys; at least part of the two second keyways 4 of the two rotor cores 100 are staggered for providing two free keyways in the two rotor cores 100 for counterweight. Moreover, on the superposition combination of more than two rotor cores 100, the second key groove 4 of the third rotor core 100 is used for corresponding to the first key groove 3 of the first rotor core G and the second rotor core W, and the first key groove 3 of the third rotor core H is used for free weight, so that the two key grooves of the rotor cores 100 are more accurate in function distribution, and the installation and dynamic balance requirements of the rotor module 200 are satisfied.

As shown in fig. 1 and fig. 5, in the axial line direction 30 of the rotor module 200, two corresponding mounting slots 2 in two rotor cores 100 are arranged in a staggered manner, and the mounting slots 2 are used for accommodating magnetic steel; the magnetic steels are staggered in the axial line direction 30 of the rotor module 200, so that the magnetic fields generated by the magnetic steels cover the circumferential direction of the rotor module 200. In the stacking manner, for example, the back surface of the first rotor core G is stacked with the back surface of the second rotor core W to form the first module 10, and the back surface of the third rotor core 100 is stacked with the back surface of the fourth rotor core I to form the second module 20, and the second module 20 rotates 180 °. The second key groove 4 on the front face of the second module 20 corresponds to the first key groove 3 on the front face of the first module 10, and the two corresponding mounting grooves 2 on the rotor module 200 formed by combining the first module 10 and the second module 20 are staggered in sequence and distributed in an inclined way. The magnetic field gaps among the plurality of rotor cores 100 are filled by the magnetic fields generated by the magnetic steels of the adjacent rotor cores 100, so that the magnetic fields generated by the plurality of magnetic steels in the rotor module 200 cover the circumferential direction of the rotor module 200.

As shown in fig. 1 to 5, the main body 1 is provided with two groups of connecting through holes 5, and the two groups of connecting through holes 5 are oppositely arranged; the connection through holes 5 are through which bolts pass to connect the two rotor cores 100 by bolts. The plurality of rotor cores 100 are fixed through bolts, so that the integrity of the rotor module 200 is better; moreover, the rotor module 200 is relatively stable in connection through two sets of connection through holes 5, one part of each set of connection through holes 5 is used for a bolt to pass through, and the other part is used as an idle hole and is used for counterweight of the rotor module 200.

As shown in fig. 1 to 5, the connecting through hole 5 includes two first mounting holes 51, two second mounting holes 52, two third mounting holes 53, the two first mounting holes 51, the two second mounting holes 52, the two third mounting holes 53 are equally spaced along the circumferential direction of the main body 1, the two first mounting holes 51 are spaced along the radial direction of the main body 1, the two second mounting holes 52 are spaced along the radial direction of the main body 1, and the two third mounting holes 53 are spaced along the radial direction of the main body 1; when the two rotor cores 100 are in the stacked state, any one of the first mounting holes 51, any one of the second mounting holes 52, and any one of the second mounting holes 52 in the two rotor cores 100 correspond to each other.

In the present embodiment, referring to fig. 4 and 5, after the four rotor cores 100 are stacked, in the rotor module 200, one of the two first mounting holes 51, one of the two second mounting holes 52, and one of the two third mounting holes 53 are in a corresponding state; the remaining one of the two first mounting holes 51, the remaining one of the two second mounting holes 52, and the remaining one of the two third mounting holes 53 are all in a dislocated state; therefore, the corresponding first, second and third mounting holes 51, 52, 53 are used for bolts to pass through, so that the bolts fix the four rotor cores 100, thereby improving the overall structural stability of the rotor module 200; the first mounting hole 51, the second mounting hole 52 and the third mounting hole 53 in the dislocated state are in the idle state and are used for balancing the rotor module 200 set, so that the two balancing weights divided by any central axis of the rotor module 200 are equal.

As shown in fig. 1 to 5, the present invention further provides a stacking method of a rotor module 200, which includes the following steps:

Step one, superposing first bonding surfaces of two rotor cores 100 to form a first module 10; so that the two first key grooves 3 in the two rotor cores 100 are in a corresponding state and the two second key grooves 4 in the two rotor cores 100 are in a forward dislocation state; in this embodiment, the first bonding surface is a back surface of the rotor core 100, and the second bonding surface is a front surface of the rotor core 100.

Step two, superposing the first bonding surfaces of the two rotor cores 100 and forming a second module 20; so that the two first keyways 3 in the two rotor cores 100 are in a corresponding state and the two second keyways 4 in the two rotor cores 100 are in a forward-dislocated state.

Step three, the second module 20 is rotated 180 °, and the second bonding surface of the second module 20 is overlapped with the second bonding surface of the first module 10, so that two second keyways 4 of the second module 20 are in a corresponding state with two first keyways 3 of the first module 10, and adjacent first keyways 3 and second keyways 4 are in a reverse dislocation state between the second module 20 and the first module 10. Therefore, after the four rotor modules 200 are stacked, the four keyways for matching are correspondingly arranged, and the four keyways left idle are in the forward-reverse-forward-reverse round-trip dislocation in the axial line direction 30 of the rotor module 200, and the distances of the round-trip dislocation are the same, so that after the rotor modules 200 are stacked, the weights of two parts divided by any central axis of the rotor module 200 are equal.

Through the above superposition mode, no additional dynamic balance operation experiment is needed, the installation steps of the rotor module 200 are simplified, and the requirements on assembly personnel are greatly reduced.

As shown in fig. 5, the positions of the magnetic steels are sequentially staggered and overlapped, and the key grooves which are left unused are symmetrically distributed on the axis of the matched key grooves; three idle mounting holes and three bolts passing through the mounting holes on the outer ring in the rotor module 200 are distributed equidistantly, and three idle mounting holes and three bolts passing through the mounting holes on the inner ring in the rotor module 200 are distributed equidistantly. The idle mounting holes and the mounting holes for bolts to pass through are distributed in the radial direction of the rotor module 200, so that the quality of the rotor module 200 is ensured to be uniformly distributed by taking the axle center 7 as a reference, the dynamic balance of the rotor module 200 is ensured, and the motor design requirement is met.

In addition, after the rotor module 200 is installed, the included angle between adjacent layers of the magnetic steel is 2A, the dynamic balance requirement of the rotor is high, each rotor core 100 is designed by taking two key grooves as an example, the design is shown in fig. 2 and 6, the central line of any magnetic steel installation position is taken as a Y coordinate line, the deflection angles a of the key grooves and the Y coordinate line are set, the key grooves are uniformly distributed around the axle center 7, and the key grooves are turned 180 degrees and then shown in fig. 3.

As shown in fig. 1 to 6, the mounting grooves 2, the first key grooves 3 and the second key grooves 4 are distributed in the radial direction of the main body 1, the mounting grooves 2 and the first key grooves 3 or the second key grooves 4 are staggered by an angle a in the radial direction of the main body 1, and the total number of the mounting grooves 2 is even;

since the total number of the mounting grooves 2 is even, the magnetic steel mounting positions are uniformly distributed with the shaft center 7, the magnetic steel generates magnetic poles, and each rotor core 100 is ten-case. When 2A > b, the number of superimposed layers s=360/2 a= [180/a ] of the rotor module 200;

Wherein 2A is the dislocation angle of two adjacent magnetic steels in the axial line direction 30 of the rotor module 200; s is the number of superimposed layers of the rotor module 200, and S is more than or equal to 2; b is the circumferential angle corresponding to the width of the key groove. When the number of layers of the rotor module 200 is designed, only the numerical value A of the staggering angle of the mounting groove 2 and the first key groove 3 or the second key groove 4 in the radial direction of the main body 1 is required to be determined, so that the number of layers of the rotor module 200 can be rapidly calculated, and the calculation mode greatly improves the production efficiency of the rotor module 200.

In addition, when 2A is equal to or less than b and C/n is less than b/2A, that is, one key groove is provided in each rotor core 100, s= [2C/n ]; when the design values satisfy the above formula, the rotor core assembly is suitable for superposition of two rotor cores 100, and each rotor core 100 is provided with a key slot for key connection with the rotor module 200.

When 2A is equal to or less than b and C/n > (360/n-b)/2A, i.e., there is no key slot in each rotor core 100, s=2 [ (a-b)/2A ]; when the design value satisfies the above formula, the rotor module 200 cannot be keyed without a key slot.

When 2A is less than or equal to b, and b/2A is less than or equal to C/n is less than or equal to (360/n-b)/2A, namely, each rotor core 100 is provided with at least two key grooves; s=2 [ (360/n-2 b-2A)/2A ] +2=2 [ (180/n-b-a)/a ] +2; when the design value satisfies the above formula, the rotor module 200 can be stacked at least four times, which is also the optimal design value of the rotor module 200 during design.

Wherein 2A is the dislocation angle of two adjacent magnetic steels in the axial line direction 30 of the rotor module 200; a is a circumferential angle corresponding to the width of the mounting groove 2; n is the number of key slots in the rotor module 200 for mating; s is the total number of superimposed layers of the rotor module 200, and S is more than or equal to 2; b is a circumferential angle corresponding to the width of the key groove; n is the total number of keyways in the rotor module 200; c is the total number of mounting slots 2 per rotor core 100.

In addition, the total number of keyways of the rotor module 200 is n=sn/2; through the calculation formula, the total number of key grooves of the rotor module 200 can be rapidly calculated, and the total number of key grooves of the rotor module 200 is divided by the number of layers of superposition of the rotor module 200, so that a plurality of key grooves are required to be formed on each rotor core 100.

Wherein N is the total number of keyways in the rotor module 200; s is the total number of superimposed layers of the rotor module 200, and S is more than or equal to 2; n is the number of key slots in the rotor module 200 for mating.

When referring to the description of the drawing, the new characteristics are described; in order to avoid that repeated reference to drawings results in insufficient brevity of description, the drawings are not cited one by one in the case of the described features being clearly expressed.

The foregoing embodiments are provided for the purpose of exemplary reproduction and deduction of the technical solution of the present invention, and are used for fully describing the technical solution, the purpose and the effects of the present invention, and are used for enabling the public to understand the disclosure of the present invention more thoroughly and comprehensively, and are not used for limiting the protection scope of the present invention.

The above examples are also not an exhaustive list based on the invention, and there may be a number of other embodiments not listed. Any substitutions and modifications made without departing from the spirit of the invention are within the scope of the invention.

Claims (10)

1. The superimposed rotor module is characterized by comprising at least two rotor cores, wherein the two rotor cores are superimposed to form the rotor module; the rotor core comprises a main body, a shaft hole, a clamping part and a plurality of mounting grooves, wherein the shaft hole penetrates through one side of the main body to the other side; the mounting grooves are formed in the main body, the mounting grooves are distributed at equal intervals along the circumferential direction of the main body, and the clamping parts are formed in the inner wall of the main body and are communicated with the shaft holes;

the mounting grooves and the clamping portions are distributed in the radial direction of the main body, and the mounting grooves and the clamping portions are staggered in the radial direction of the main body.

2. The rotor module according to claim 1, wherein midpoints of the two corresponding mounting grooves are connected to form a first axis, and the axle center of the main body is located on the first axis; the clamping part comprises a first key groove and a second key groove, the first key groove and the second key groove are oppositely arranged, the middle points of the first key groove and the second key groove are connected to form a second axis, and the axis of the main body is staggered with the second axis.

3. The rotor module according to claim 2, wherein at least part of the two first keyways of the two rotor cores overlap and at least part of the two second keyways of the two rotor cores are offset in the axial direction of the rotor module.

4. The rotor module according to claim 1, wherein corresponding two mounting grooves in the two rotor cores are arranged in a staggered manner in the axial line direction of the rotor module, and the mounting grooves are used for accommodating magnetic steel; the magnetic steels are staggered in the axial lead direction of the rotor module, so that the magnetic fields generated by the magnetic steels are covered on the circumferential direction of the rotor module.

5. The rotor module according to claim 1, wherein the main body is provided with two groups of connecting through holes, and the two groups of connecting through holes are oppositely arranged; the connecting through holes are used for the bolts to pass through so that the two rotor iron cores are connected through the bolts.

6. The rotor module according to claim 5, wherein the connection through hole comprises two first mounting holes, two second mounting holes, and two third mounting holes, the two first mounting holes, the two second mounting holes, and the two third mounting holes are equally spaced along the circumferential direction of the main body, the two first mounting holes are spaced along the radial direction of the main body, the two second mounting holes are spaced along the radial direction of the main body, and the two third mounting holes are spaced along the radial direction of the main body;

When the two rotor cores are in a superposition state, any one of the first mounting holes, any one of the second mounting holes and any one of the second mounting holes in the two rotor cores correspond to each other.

7. The superposition method of the rotor module is characterized by comprising the following steps:

Overlapping the first bonding surfaces of the two rotor cores to form a first module;

overlapping the first bonding surfaces of the two rotor cores to form a second module;

The second module is rotated 180 degrees, and the second bonding surface of the second module is overlapped with the second bonding surface of the first module.

8. The method of stacking rotor modules according to claim 7, wherein the mounting grooves, the first key grooves and the second key grooves are distributed in the radial direction of the main body, the mounting grooves and the first key grooves or the second key grooves are staggered by an angle A in the radial direction of the main body, and the total number of the mounting grooves is even;

When 2A > b, the superposition layer number S=360/2 A= [180/A ] of the rotor module;

Wherein 2A is the dislocation angle of two adjacent magnetic steels in the axial lead direction of the rotor module; s is the number of superimposed layers of the rotor module, and S is more than or equal to 2; b is the circumferential angle corresponding to the width of the key groove.

9. The method of stacking rotor modules according to claim 8, wherein when 2A is equal to or less than b and C/n is equal to or less than b/2A, i.e., each rotor core has a key slot therein, then s= [2C/n ];

when 2A is less than or equal to b and C/n > (360/n-b)/2A, i.e., there is no keyway in each rotor core, s=2 [ (a-b)/2A ];

When the ratio of b to b is less than or equal to 2A and the ratio of b/2A to C/n is less than or equal to (360/n-b)/2A, at least two key grooves are formed in each rotor iron core; s=2 [ (360/n-2 b-2A)/2A ] +2=2 [ (180/n-b-a)/a ] +2;

Wherein 2A is the dislocation angle of two adjacent magnetic steels in the axial lead direction of the rotor module; a is a circumferential angle corresponding to the width of the mounting groove; n is the number of key slots in the rotor module for matching; s is the total superposition layer number of the rotor module, and S is more than or equal to 2; b is a circumferential angle corresponding to the width of the key groove; n is the total number of keyways in the rotor module; c is the total number of mounting slots in each rotor core.

10. The method of stacking rotor modules as recited in claim 9 wherein the total number of keyways of the rotor modules is n=sn/2;

wherein N is the total number of keyways in the rotor module; s is the total superposition layer number of the rotor module, and S is more than or equal to 2; n is the number of key slots in the rotor module for mating.