Staggered press-fitting device for combined rotor of permanent magnet motor

Abstract

The utility model discloses a permanent magnet motor combined rotor dislocation press-fitting device which comprises an iron core placing plate, a jacking cylinder and an angle positioning assembly, the iron core placing plate is used for placing a rotor iron core, and a cylinder body of the jacking cylinder and the iron core placing plate are fixedly arranged. The jacking air cylinder drives the angle positioning assembly to penetrate through the iron core containing plate, and the angle positioning assembly can position two stacked rotor iron cores at the same time. According to the utility model, the two rotor iron cores are stacked on the iron core placing plate and are simultaneously positioned through the angle positioning assembly, after the rotor iron cores and the rotating shaft are pressed, the jacking cylinder drives the angle positioning assembly to return, and the rotor iron cores are prevented from angle dislocation in the pressing process, so that the pressing precision is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to rotor core press mounting technical field especially relates to a permanent magnet motor combination rotor misplacement press mounting device. BACKGROUND

[0002] New energy motor rotor core misplacement press mounting refers to two rotor cores needing to overcome the attractive force of the magnetic steel and being combined and assembled at a certain angle, if the positioning between the rotor cores is not implemented accurately according to the design angle during the rotor press mounting process, the motor operation failure will be caused.

[0003] During the rotor core misplacement press mounting process, because the rotor has completed the magnetic steel assembly, the rotor core itself has high magnetism, and it is difficult to press mount two rotor cores into one body accurately according to the design angle, therefore, the tooling is needed to position the angle of the rotor core, the press mounting tooling of the prior art (such as the tooling recorded in the patents with the application numbers 202321630577.1 and 20232264000.2) sets the positioning pin on the base plate, and the rotor core is placed on the base plate with the positioning pin to realize positioning, during installation, the press head drives the rotating shaft and one rotor core to press mount, then the base plate is rotated by a certain angle and the other rotor core is installed, then the rotating shaft with the rotor core is press mounted with the other rotor core on the base plate, therefore, the two rotor cores are not positioned and fixed at the same time, and there may be angle deviation during the press mounting of the two rotor cores, even a small angle deviation will cause the motor operation failure.

[0004] In addition, the rotor core press mounting not only has requirements on the angle, but also has requirements on the installation height of the rotor core and the two-pole orientation of the rotor core, the existing press mounting tooling does not detect the assembly direction of the rotor core, which may cause the rotor core to be installed reversely or have deviation in the installation height.

[0005] Therefore, a tooling capable of installing the rotor core on the rotating shaft accurately according to the design angle needs to be designed. UTILITY MODEL CONTENTS

[0006] In order to solve the technical problem that the rotor core press mounting tooling of the prior art is prone to angle deviation during the press mounting of two rotor cores and causes the motor operation failure, the utility model provides a permanent magnet motor combination rotor misplacement press mounting device to solve the above problem.

[0007] The utility model discloses a technical scheme that solves its technical problem is as follows: a permanent magnet motor combination rotor misplacement press -fitting device, including iron core placing plate, jacking cylinder and angle positioning assembly, the iron core placing plate is used for placing rotor iron core, the cylinder body of jacking cylinder and iron core placing plate are all fixed settings, the jacking cylinder drives angle positioning assembly penetrates iron core placing plate, and angle positioning assembly can position two mislocation stacked rotor iron cores simultaneously.

[0008] In the optional embodiment of the utility model, the angle positioning assembly includes an intermediate slide plate and two limit pins fixed to the upper surface of the intermediate slide plate, the piston rod of the jacking cylinder is connected with the intermediate slide plate and drives the intermediate slide plate to move close to or away from the iron core placing plate, the two limit pins are matched with the limit holes on the rotor iron cores, and the limit pins can penetrate the iron core placing plate and are inserted into the two rotor iron cores.

[0009] In the optional embodiment of the utility model, the two limit pins are arranged in a non-array manner along the circumferential direction, the rotor iron cores have two groups of limit holes, each group of limit holes includes two limit holes corresponding to the mislocation angle of the rotor iron core, and on the same rotor iron core, the two limit pins are matched with one limit hole in each of the two groups of limit holes respectively.

[0010] In the optional embodiment of the utility model, each group of limit holes includes two limit holes arranged in a circumferential array.

[0011] In the optional embodiment of the utility model, the jacking cylinder fixing plate is further included for fixing the jacking cylinder, the jacking cylinder fixing plate is connected with the iron core placing plate through guide columns, and the intermediate slide plate is slidingly connected with the guide columns.

[0012] In the optional embodiment of the utility model, the iron core placing plate is further provided with a mislocation detection assembly, and the mislocation detection assembly is used for detecting the installation height and magnetic pole direction of the rotor iron cores.

[0013] In the optional embodiment of the utility model, the mislocation detection assembly includes a sensor base fixed to the iron core placing plate, two sensors arranged in an up-down manner are installed on the sensor base, the lower sensor is used for sensing the installation height and magnetic pole direction of the lower rotor iron core, and the upper sensor is used for sensing the installation height and magnetic pole direction of the upper rotor iron core.

[0014] In the optional embodiment of the utility model, the sensors are magnetic sensors, and the two sensors respectively sense the magnetic poles at one end of the two rotor iron cores.

[0015] In the optional embodiment of the utility model, the permanent magnet pressure head above the iron core placing plate is further included, the shaft end is adsorbed on the permanent magnet pressure head, and the permanent magnet pressure head drives the shaft to press into the rotor iron core.

[0016] In the optional implementation manner of the utility model, the iron core placing plate is installed with a positioning needle base, the positioning needle base is installed with elastic positioning needles, the elastic positioning needles position the rotating shaft circumferentially before the rotating shaft is inserted into the rotor iron core, and the elastic positioning needles cancel the circumferential positioning of the rotating shaft after the pressing is completed.

[0017] In the optional implementation manner of the utility model, the iron core placing plate is installed with a lifting column, and the positioning needle base is located on the lifting column.

[0018] The utility model has the advantages of:

[0019] (1) the utility model discloses two rotor iron cores are stacked on the iron core placing plate, and the two rotor iron cores are positioned simultaneously through the angle positioning assembly, when the rotor iron core and the rotating shaft pressing are completed, the angle positioning assembly is retreated under the drive of the jacking cylinder, and the rotor iron core does not appear angular misplacement in the pressing process, thereby guaranteeing the pressing precision.

[0020] (2) the utility model discloses that the installation height of the rotor iron core is detected through two sensors respectively, prevents the rotor iron core from being installed reversely, and also can prevent the rotor iron core from being deformed and causing inaccurate pressing position. DRAWINGS

[0021] The utility model is further explained below in connection with the drawings and examples.

[0022] Figure 1 It is the perspective view of the permanent magnet motor combined rotor misplacement pressing device and two rotor iron cores after assembly of the utility model;

[0023] Figure 2 It is the perspective view of the permanent magnet motor combined rotor misplacement pressing device and one rotor iron core of the utility model;

[0024] Figure 3 It is the enlarged view of a in Figure 2

[0025] Figure 4 It is the plan view of the permanent magnet motor combined rotor misplacement pressing device of the utility model;

[0026] Figure 5 It is the explosion view of two rotor iron cores misplacement pressing in the utility model;

[0027] Figure 6 It is the front view of Figure 1

[0028] Figure 7 It is the plan view of the rotor iron core in the utility model.

[0029] ​​In the diagram, 1. Core placement plate, 2. Lifting cylinder, 3. Angle positioning assembly, 301. Intermediate sliding plate, 302. Limiting pin, 4. Rotor core, 5. Limiting hole, 501. First limiting hole, 502. Second limiting hole, 503. Third limiting hole, 504. Fourth limiting hole, 6. Cylinder base plate, 7. Guide column, 8. Permanent magnet pressure head, 9. Misalignment detection assembly, 901. Sensor base, 902. Upper sensor, 903. Lower sensor, 10. Positioning pin base, 11. Elastic positioning pin, 12. Lifting column, 13. Dynamic balancing plate, 14. Rotating shaft. Detailed Implementation

[0030] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0031] Example 1

[0032] like Figures 1-4 As shown, a permanent magnet motor combined rotor misalignment pressing device includes a core placement plate 1, a lifting cylinder 2, and an angle positioning component 3. The core placement plate 1 is used to place the rotor core 4. The cylinder body of the lifting cylinder 2 and the core placement plate 1 are both fixedly installed. The lifting cylinder 2 drives the angle positioning component 3 through the core placement plate 1, and the angle positioning component 3 can simultaneously position two misaligned stacked rotor cores 4.

[0033] In the unused state, the lifting cylinder 2 drives the angle positioning component 3 to move down to below the iron core placement plate 1. When it is necessary to install the rotor iron core 4, the lifting cylinder 2 is activated, lifting the angle positioning component 3 to above the iron core placement plate 1. Then, the two rotor iron cores 4 are placed in sequence according to their respective angles. The two rotor iron cores 4 maintain a fixed angle under the limit of the angle positioning component 3. During the pressing process of the rotating shaft 14, the angle positioning component 3 always limits the rotor iron core 4 until the pressing is completed, thereby avoiding the angle deviation of the two rotor iron cores 4 during the pressing process. After the pressing is completed, the lifting cylinder 2 drives the angle positioning component 3 to move down to demold.

[0034] The angle positioning component 3 is used to prevent the end face of the rotor core 4 from rotating and to prevent the misalignment angle between the two rotor cores 4 from deviating from the design angle. Therefore, the angle positioning component 3 positions the rotor core 4 in the horizontal plane.

[0035] The angle positioning component 3 used in this embodiment has the following structure:

[0036] The angle positioning assembly 3 comprises a middle slide plate 301 and two limiting pins 302 fixed on the upper surface of the middle slide plate 301, the piston rod of the jacking cylinder 2 is connected with the middle slide plate 301 and drives the middle slide plate 301 to move close to or away from the core placing plate 1, the two limiting pins 302 are matched with the limiting holes 5 on the rotor core 4, and the limiting pins 302 can penetrate through the core placing plate 1 and are inserted into the two rotor cores 4.

[0037] As shown in Figure 1 and Figure 6 , the middle slide plate 301 is located below the core placing plate 1 and serves as the mounting plate of the limiting pins 302, and the two limiting pins 302 can inhibit the rotation of the rotor core 4.

[0038] In order to stagger the joints of the magnetic circuits of the layers and thus reduce the air gap at the joints and the magnetic resistance of the magnetic circuits, the rotor core 4 needs to be misaligned during pressing, that is, the magnetic steels of the rotor cores 4 of the layers are not opposite to each other, and an angle deviation needs to exist, as shown in Figure 5 Since the two rotor cores 4 are positioned by the same two limiting pins 302, the installation requirement needs to be achieved by the design of the limiting holes on the rotor core 4, and the specific design is that the rotor core 4 has two groups of limiting holes, each group of limiting holes comprises two limiting holes 5 corresponding to the misalignment angle of the rotor core 4, and on the same rotor core 4, the two limiting pins 302 are matched with one limiting hole 5 in each group of limiting holes.

[0039] Taking the misalignment angle of the two-layer rotor core 4 as 180° as an example, the circumferential angle of the two limiting holes 5 in the same group of limiting holes is also 180°.

[0040] The two limiting pins 302 can be arranged in the circumferential direction, and the circumferential angle between the two limiting pins 302 is 180°, and at this time, only two limiting holes 5 need to be arranged on the rotor core 4, because the rotor core 4 can still be inserted and matched with the two limiting pins 302 after rotating by 180°. However, in this case, it is not possible to identify whether the two rotor cores 4 have been misaligned.

[0041] In order to facilitate identification of whether the two rotor cores 4 are misaligned, the two limiting pins 302 are arranged in the circumferential direction in the embodiment, the rotor core 4 has two groups of limiting holes, each group of limiting holes comprises two limiting holes 5 arranged in the circumferential direction, and on the same rotor core 4, the two limiting pins 302 are matched with one limiting hole 5 in each group of limiting holes. As shown in Figure 7As shown, the limiting holes 5 on the rotor core 4 are respectively named as a first limiting hole 501, a second limiting hole 502, a third limiting hole 503 and a fourth limiting hole 504, the first limiting hole 501 and the third limiting hole 503 are a first group of limiting holes, and the second limiting hole 502 and the fourth limiting hole 504 are a second group of limiting holes, then when the lower rotor core 4 is installed, the first limiting hole 501 in the first group of limiting holes and the second limiting hole 502 in the second group of limiting holes are matched with the two limiting pins 302, and when the upper rotor core 4 is installed, the third limiting hole 503 in the first group of limiting holes and the fourth limiting hole 504 in the second group of limiting holes are matched with the two limiting pins 302.

[0042] For the installation of the jacking cylinder 2:

[0043] The device further comprises a cylinder bottom plate 6 for fixing the jacking cylinder 2, the cylinder bottom plate 6 is connected with the core placing plate 1 through guide columns 7, and the middle sliding plate 301 is slidingly connected with the guide columns 7. The height between the cylinder bottom plate 6 and the core placing plate 1 is the sliding stroke of the middle sliding plate 301, the guide columns 7 can provide movement guidance for the middle sliding plate 301, ensure the linear movement of the middle sliding plate 301, and improve the positioning accuracy of the positioning pin.

[0044] For the installation of the rotating shaft 14:

[0045] The rotating shaft 14 can be pressed into the rotor core 4 from above the rotor core 4 in a conventional pressing head or pressing machine conveying mode, in the utility model, a permanent magnetic pressing head 8 is arranged above the core placing plate 1, the end of the rotating shaft 14 is adsorbed on the permanent magnetic pressing head 8, and the permanent magnetic pressing head 8 drives the rotating shaft 14 to be pressed into the rotor core 4. When the three are pressed and assembled to form a rotor assembly, the permanent magnetic pressing head 8 releases the rotating shaft 14, and the jacking cylinder 2 is retracted, so that the rotor assembly on the core placing plate 1 can be directly taken out.

[0046] Embodiment two

[0047] On the basis of embodiment one, the core placing plate 1 is further provided with a misplacement detection assembly 9 in the embodiment, the misplacement detection assembly 9 is used for detecting the installation height and the magnetic pole direction of the rotor core 4, that is, two rotor cores 4 are detected at two different heights to judge whether they are installed in place. The rotor core 4 has a magnetic pole direction requirement when being installed, the misplacement detection assembly 9 can avoid the rotor core 4 being installed reversely, in addition, when the rotor core 4 is deformed, the misplacement detection assembly 9 also cannot send a detection signal, the angle positioning assembly 3 can reduce the deformation of the rotor core 4, and the misplacement detection assembly 9 further ensures that the rotor core 4 is not deformed.

[0048] As shown in Figure 4 and Figure 6As shown, the misalignment detection assembly 9 in the embodiment includes a sensor base 901 fixed with the core placement plate 1, and two sensors arranged above and below are installed on the sensor base 901, which are named as upper sensor 902 and lower sensor 903 respectively, the upper sensor 902 is used to sense whether the upper rotor core 4 is pressed into place, and the lower sensor 903 is used to sense whether the lower rotor core 4 is pressed into place.

[0049] For the rotor core 4, the pressed into place means that the magnetic pole direction of the rotor core 4 is correct and the pressed height is accurate.

[0050] The sensor in the embodiment adopts a magnetic sensor for sensing the magnetic pole, for example, sensing the N pole on the rotor core 4.

[0051] In further design, in order to avoid the slight rotation of the rotating shaft 14 caused by the excessive magnetic steel attraction of the rotor core 4 during the pressing process, the rotating shaft 14 needs to be circumferentially positioned, for example, Figures 1-5 As shown, the core placement plate 1 is installed with a positioning needle base 10, and the positioning needle base 10 is installed with an elastic positioning needle 11, the elastic positioning needle 11 positions the rotating shaft 14 circumferentially before the rotating shaft 14 is inserted into the rotor core 4, and cancels the circumferential positioning of the rotating shaft 14 after the pressing is completed.

[0052] The circumferential positioning of the rotating shaft 14 by the elastic positioning needle 11 can be achieved by providing a positioning sliding groove on the side surface of the rotating shaft 14 for the elastic positioning needle 11 to insert, the positioning sliding groove gradually extends outwardly from bottom to top and extends to the outer surface of the rotating shaft 14. The elastic positioning needle 11 is a needle-shaped structure that can elastically contract under force and can reset after the external force disappears.

[0053] When the rotating shaft 14 moves downward to prepare to be inserted into the rotor core 4, the elastic positioning needle 11 is first inserted into the positioning sliding groove to position the rotating shaft 14 circumferentially, then the rotating shaft 14 is pressed into the rotor core 4, as the rotating shaft 14 moves downward, the elastic positioning needle 11 is lifted up and contracted by the positioning sliding groove, until the elastic positioning needle 11 slides out of the upper end of the positioning sliding groove to cancel the positioning of the rotating shaft 14, at this time, the rotor assembly pressing is completed.

[0054] The installation positions of the elastic positioning needle 11 and the sensor base 901 are away from the center of the core placement plate 1 by a distance greater than the outer diameter of the rotor core 4, so as to avoid interference with the rotor core 4.

[0055] Since the elastic positioning needle 11 needs to position the rotating shaft 14 above the two rotor cores 4, it is away from the plane of the core placement plate 1, and preferably a lifting column 12 is installed on the core placement plate 1, and the positioning needle base 10 is located on the lifting column 12. The function of the lifting column 12 is to lift the positioning needle base 10 too high, and the lifting column 12 also has a guiding function, and the installation height of the positioning needle base 10 on the lifting column 12 can be adjusted according to actual needs.

[0056] The working process of the permanent magnet motor combined rotor misalignment press-fitting device with the rotor core 4 angle positioning function, the rotating shaft 14 angle positioning function and the misalignment detection function will be specifically introduced as follows:

[0057] When placing the first rotor core 4, firstly, the magnetic pole of the rotor core 4 must be ensured to be oriented correctly, the limiting hole 5 of the first rotor core 4 is slowly placed on the core placing plate 1 along the two limiting pins 302, when the first rotor core 4 is placed to the correct position, the lower sensor 904 can sense the N pole of the magnetic steel, at this time, the indicator light of the lower sensor 904 is bright, which indicates that the position is correct, if the position is incorrect, the indicator light of the lower sensor 904 will not be bright, then the second rotor core 4 is placed, the placing method is the same as that of the first rotor core 4, the difference lies in that the second rotor core 4 is rotated by 180 degrees relative to the first rotor core 4, then whether the indicator light of the upper sensor 903 is bright is observed, at this time, the misalignment installation of the rotor core 4 is completed, and the position precision is completed according to the design requirement.

[0058] After the installation of the rotor assembly is completed, the rotor and the dynamic balance plate 13 completed in the last process are placed on the permanent magnet press head 8, the permanent magnet press head 8 can use magnetism to attract the rotating shaft 14, the permanent magnet press head 8 moves downward under the action of the hydraulic pressure, the positioning sliding groove of the rotating shaft 14 is aligned with the position of the elastic positioning needle 11, at this time, the elastic positioning needle 11 has completed the positioning of the relative position of the rotating shaft 14, then the rotating shaft 14 is slowly pressed into the two rotor cores 4, after being completely pressed in, whether there is obvious gap between the dynamic balance plate 13 and the rotor core 4 is observed, that is, whether the misalignment press-fitting of the rotor core 4 is completed, this measure also completes the angle positioning relationship between the rotating shaft 14 and the two rotor cores 4, finally, the demolding action of the device is completed, the jacking cylinder 2 is lowered, the angle positioning assembly 3 is retracted, the rotor assembly is manually taken away, and the demolding action of the device is completed.

[0059] In the description of the utility model, it needs to be understood that the orientation or position relationship indicated by the terms "upper", "lower", "axial" and the like is the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0060] In the description of the utility model, the illustrative description of the terms does not necessarily refer to the same embodiment. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments in a suitable manner.

[0061] With the above ideal embodiment of the present application as the inspiration, through the above description, relevant staff can make various changes and modifications without deviating from the technical idea of the present application. The technical scope of the present application is not limited to the content of the specification, and the technical scope must be determined according to the scope of claims.

Claims

1. A permanent magnet motor combined rotor misalignment pressing device, characterized in that: The device includes a core placement plate (1), a lifting cylinder (2), and an angle positioning component (3). The core placement plate (1) is used to place the rotor core (4). The cylinder body of the lifting cylinder (2) and the core placement plate (1) are both fixedly installed. The lifting cylinder (2) drives the angle positioning component (3) to pass through the core placement plate (1). The angle positioning component (3) can simultaneously position two staggered stacked rotor cores (4).

2. The permanent magnet motor combined rotor misalignment pressing device according to claim 1, characterized in that: The angle positioning component (3) includes an intermediate slide plate (301) and two limiting pins (302) fixed on the upper surface of the intermediate slide plate (301). The piston rod of the lifting cylinder (2) is connected to the intermediate slide plate (301) and drives the intermediate slide plate (301) to move closer to or away from the iron core placement plate (1). The two limiting pins (302) cooperate with the limiting holes (5) on the rotor iron core (4). The limiting pins (302) can penetrate the iron core placement plate (1) and insert into the two rotor iron cores (4).

3. The permanent magnet motor combined rotor misalignment pressing device according to claim 2, characterized in that: The rotor core (4) has two sets of limiting holes (5). Each set of limiting holes (5) includes two limiting holes (5) corresponding to the misalignment angle of the rotor core (4). On the same rotor core (4), two limiting pins (302) respectively cooperate with one of the limiting holes (5) in the two sets of limiting holes (5).

4. The permanent magnet motor combined rotor misalignment pressing device according to claim 2, characterized in that: It also includes a cylinder base plate (6) for fixing the lifting cylinder (2), the cylinder base plate (6) is connected to the iron core placement plate (1) through the guide post (7), and the intermediate slide plate (301) is slidably connected to the guide post (7).

5. The permanent magnet motor combined rotor misalignment pressing device according to claim 1, characterized in that: The iron core placement plate (1) is also equipped with a misalignment detection component (9), which is used to detect the installation height and magnetic pole orientation of the rotor iron core (4).

6. The permanent magnet motor combined rotor misalignment pressing device according to claim 5, characterized in that: The misalignment detection component (9) includes a sensor base (901) fixed to the iron core placement plate (1). Two sensors arranged vertically are installed on the sensor base (901). The lower sensor is used to sense the installation height and magnetic pole orientation of the lower rotor iron core (4), and the upper sensor is used to sense the installation height and magnetic pole orientation of the upper rotor iron core (4).

7. The permanent magnet motor combined rotor misalignment pressing device according to claim 6, characterized in that: The sensors are magnetic sensors, and the two sensors respectively sense one end of the magnetic pole of the two rotor cores (4).

8. The permanent magnet motor combined rotor misalignment pressing device according to claim 1, characterized in that: It also includes a permanent magnet pressure head (8) located above the iron core placement plate (1), the end of the rotating shaft (14) is attached to the permanent magnet pressure head (8), and the permanent magnet pressure head (8) drives the rotating shaft (14) to press into the rotor iron core (4).

9. The permanent magnet motor combined rotor misalignment pressing device according to claim 1, characterized in that: The iron core placement plate (1) is equipped with a positioning pin base (10), and the positioning pin base (10) is equipped with an elastic positioning pin (11). The elastic positioning pin (11) positions the rotating shaft (14) circumferentially before the rotating shaft (14) is inserted into the rotor iron core, and cancels the circumferential positioning of the rotating shaft (14) after the pressing is completed.

10. The permanent magnet motor combined rotor misalignment pressing device according to claim 3, characterized in that: The two limiting pins (302) are arranged in a non-array along the circumferential direction, and each set of limiting holes (5) includes two limiting holes (5) arranged in a circumferential array.

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