Holding device and bearing device for holding plurality of rotors for electric machine

Abstract

The utility model relates to a holding device (60) used for holding a plurality of rotors (10) used for a motor, the holding device comprises a first side plate (21), a second side plate (22), a first end plate (31) and a second end plate (32), the first side plate (21) and the second side plate (22) are respectively provided with notches (45, 55) used for receiving a rotor shaft (11), and the first end plate (31) and the second end plate (32) are arranged on the first side plate (21) and the second side plate (22). The first end plate and the second end plate can pivot relative to the first side plate and the second side plate about a pivot axis extending in a vertical direction (Z), and the holding device (60) can be converted from a folded state to an unfolded state by means of the pivoting of the first end plate and the second end plate relative to the first side plate and the second side plate, in the folded state, the two end plates are parallel to the two side plates, and in the unfolded state, the two end plates are perpendicular to the two side plates. The supporting equipment provided by the utility model comprises at least one holding device (60) provided by the utility model and a plurality of rotors (10) held in the holding device.

Description

Technical Field

[0001] The utility model relates to a holding device for holding a plurality of rotors for electric motors, wherein the rotors to be held respectively have a rotor shaft and a lamination stack. The utility model also relates to a supporting device, which comprises at least one holding device according to the utility model and a plurality of rotors held in the holding device. Background Art

[0002] DE 10 2022 001 424 A1 discloses an electric machine having a rotor. The rotor comprises a lamination stack and a rotor shaft inserted into the lamination stack. The rotor shaft is designed to be approximately rotationally symmetrical. The lamination stack is formed by individual plates stacked and arranged in an axial direction. The rotor can rotate relative to the stator about an axis of rotation.

[0003] When manufacturing an electric motor, the rotor is produced by connecting the lamination stack and the rotor shaft to each other in a rotationally fixed manner. The produced rotor is temporarily stored and later installed in the stator. The rotor is placed in a holding device for temporary storage and transportation. Utility Model Content

[0004] Therefore, the object of the present invention is to provide a holding device for holding a plurality of rotors and a supporting device, the supporting device comprising at least one holding device according to the present invention and a plurality of rotors held in the holding device.

[0005] The object is achieved by a holding device and a support apparatus for holding a plurality of rotors, each having the following features, the support apparatus comprising at least one holding device according to the invention and a plurality of rotors held in the holding device.

[0006] The holding device for holding multiple motor rotors according to the utility model comprises a first side plate, a second side plate, a first end plate and a second end plate, wherein the rotors to be held have a rotor shaft and a lamination stack, respectively. Here, the side plates respectively have notches for receiving the rotor shaft. The end plates can be swung relative to the side plates respectively around a swiveling axis extending in a vertical direction. By swiveling the end plates relative to the side plates, the holding device can be transformed from a folded state to an unfolded state, in which the end plates are parallel to the side plates in the folded state, and in which the end plates are perpendicular to the side plates in the unfolded state.

[0007] In the unfolded state, the holding device according to the invention allows to receive a plurality of rotors for temporary storage and transport. When the holding device is not needed, the holding device is converted from the unfolded state into the folded state by swinging the end plate relative to the side plate. In the folded state, the holding device is relatively flat and therefore requires only a relatively small amount of space.

[0008] According to a preferred embodiment of the utility model, in the folded state of the holding device and in the unfolded state of the holding device, the end plates are parallel to each other and the side plates are also parallel to each other. The holding device is kinematically designed in the form of a four-bar linkage.

[0009] According to a preferred embodiment of the present invention, the end plate and the side plate are made of thermoplastic, in particular polyoxymethylene. Here, the thickness of the end plate and the side plate is 4 mm to 6 mm, preferably 5 mm. This type of thermoplastic, such as polyoxymethylene, is relatively robust / stable and durable, but will not cause scratches or other damage to the received metal rotor shaft.

[0010] The support device according to the utility model comprises at least one holding device according to the utility model and a plurality of rotors held in the holding device. Here, the rotor shafts of the rotors respectively have an inner diameter and an inner length, and the lamination stacks of the rotors respectively have an outer diameter and an outer length. Here, the inner diameter is smaller than the outer diameter, and the inner length is greater than the outer length. Here, the holding device is in an unfolded state. The rotor shafts are respectively received in the notches of the side plates.

[0011] The support device according to the invention allows simple temporary storage and simple transportation of a plurality of rotors.

[0012] According to a preferred embodiment of the utility model, the side plates each have an upper notch arranged in the upper end region of the side plates, and the upper notch is designed to be semicircular, and the diameter of the upper notch is larger than the inner diameter of the rotor shaft. If the holding device is oriented so that the vertical direction is perpendicular to the ground and the upper notch faces away from the ground, the cylindrical rotor shaft can be placed in the upper notch.

[0013] According to a preferred embodiment of the utility model, the upper notches are arranged staggered in the longitudinal direction, and the distance between two adjacent upper notches in the longitudinal direction is greater than the outer diameter of the lamination stack. Therefore, the rotor can be placed in the adjacent upper notches without collision.

[0014] According to a preferred embodiment of the utility model, the side plates each have a lower notch arranged in the lower end region of the side plates, and the lower notch is designed in a semicircular shape, and the diameter of the lower notch is larger than the inner diameter of the rotor shaft. The lower end region is opposite to the upper end region in the vertical direction. If the holding device is oriented so that the vertical direction is perpendicular to the ground and the lower notch faces the ground, the cylindrical rotor shaft can be placed in the lower notch.

[0015] According to a preferred embodiment of the utility model, the lower notches are arranged staggered with each other in the longitudinal direction, and the distance between two adjacent lower notches in the longitudinal direction is greater than the outer diameter of the lamination stack. Here, each of the lower notches is arranged centrally between each two upper notches in the longitudinal direction. If the upper notches and the lower notches are alternately facing away from the ground, the design allows a plurality of holding devices in which the rotor is held to be stacked one above the other.

[0016] According to a preferred embodiment of the utility model, the extension dimension of the side plate in the vertical direction is larger than the outer diameter of the lamination stack. Therefore, the rotor can be placed into the adjacent upper and lower notches of the holding devices stacked up and down without collision.

[0017] According to a preferred embodiment of the utility model, in the unfolded state of the retaining device, the extension dimension of the end plate in the transverse direction is greater than the outer length of the lamination stack. Therefore, the lamination stack of the rotor can be placed between the side plates of the retaining device without collision.

[0018] The utility model is not limited to the above-mentioned feature combination. For those skilled in the art, in particular, other reasonable combinations of the above-mentioned feature combination and / or individual features and / or features to be described below and / or features of the accompanying drawings can be obtained from the purpose proposed and / or the purpose proposed by comparison with the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is now described in detail according to the accompanying drawings. The utility model is not limited to the embodiments shown in the accompanying drawings. The accompanying drawings only schematically illustrate the subject matter of the utility model. The figure shows:

[0020] Figure 1 A perspective view showing a retaining device;

[0021] Figure 2 A top view showing the support arrangement;

[0022] Figure 3 A side view of the holding device is shown.

[0023] List of reference numerals:

[0024] 10 rotors

[0025] 11 Rotor shaft

[0026] 12 lamination pack

[0027] 21 First side panel

[0028] 22 Second side panel

[0029] 31 First end plate

[0030] 32 Second end plate

[0031] 40 Upper end area

[0032] 45 Upper gap

[0033] 50 Lower end area

[0034] 55 Lower gap

[0035] 60 Holding device

[0036] D1 inner diameter

[0037] D2 outer diameter

[0038] L1 internal length

[0039] L2 external length

[0040] X longitudinal direction

[0041] Y horizontal direction

[0042] Z vertical direction DETAILED DESCRIPTION

[0043] Figure 1 A perspective view of a holding device 60 for holding a plurality of rotors 10 (not shown here) for electric machines is shown. The holding device 60 comprises a first side plate 21, a second side plate 22, a first end plate 31 and a second end plate 32. The end plates 31, 32 and the side plates 21, 22 are formed of thermoplastic (currently polyoxymethylene) and have a thickness of about 5 mm.

[0044] Each of the side plates 21, 22 is connected to the first end plate 31 and the second end plate 32 by means of a hinge 15 or a plurality of hinges 15. The end plates 31, 32 can be swung relative to the side plates 21, 22 respectively around a swiveling axis extending along the vertical direction Z by means of the hinge 15. The longitudinal direction X is perpendicular to the vertical direction Z. The transverse direction Y is perpendicular to the longitudinal direction X and perpendicular to the vertical direction Z.

[0045] The holding device 60 can be transferred from the folded state to the unfolded state by swiveling the end panels 31, 32 relative to the side panels 21, 22 around the swiveling axis by an angle of 90°. In the illustration shown here, the holding device 60 is in the unfolded state.

[0046] In the unfolded state, the end panels 31, 32 are parallel to each other in the transverse direction Y, and the side panels 21, 22 are parallel to each other in the longitudinal direction X. Therefore, the end panels 31, 32 are perpendicular to the side panels 21, 22. When viewed from the vertical direction Z, the holding device 60 has a rectangular shape.

[0047] In the folded state, the end panels 31, 32 are parallel to each other in the longitudinal direction X and the side panels 21, 22 are parallel to each other in the longitudinal direction X. The end panels 31, 32 are therefore parallel to the side panels 21, 22. The holding device 60 is therefore relatively flat in the transverse direction Y. The extension of the holding device in the transverse direction Y is approximately equal to the thickness of the two panels 21, 22, 31, 32, i.e. currently approximately 10 mm.

[0048] The side plates 21, 22 each have a plurality of upper notches 45 and lower notches 55. The upper notches 45 and the lower notches 55 are respectively designed to be approximately semicircular. The upper notches 45 are arranged staggered from each other along the longitudinal direction X. The lower notches 55 are also arranged staggered from each other along the longitudinal direction X.

[0049] Figure 2 A top view of a support device is shown, which includes a holding device 60 and a plurality of rotors 10 held in the holding device. The holding device 60 is in an unfolded state. The holding device 60 is oriented so that the vertical direction Z is perpendicular to the ground. The side plates 21, 22 extend in the longitudinal direction X and the end plates 31, 32 extend in the transverse direction Y.

[0050] The rotor 10 has a rotor shaft 11 and a lamination stack 12. The rotor shaft 11 is inserted into the lamination stack 12. The rotor shaft 11 and the lamination stack 12 are connected to each other in a force-locked and non-rotatable manner to form the rotor 10. The rotor 10 is designed to be approximately rotationally symmetrical with respect to the rotation axis. In the figure shown, the rotation axis of the rotor 10 extends in the transverse direction Y.

[0051] The rotors 10 are constructed identically. The rotor shafts 11 of the rotors 10 each have an inner diameter D1 and an inner length L1. The lamination stacks 12 of the rotors 10 each have an outer diameter D2 and an outer length L2. Here, the inner diameter D1 is smaller than the outer diameter D2, and the inner length L1 is greater than the outer length L2.

[0052] The rotor shaft 11 of the rotor 10 is respectively received in the upper notches 45 of the side plates 21, 22. The diameter of the upper notch 45 is larger than the inner diameter D1 of the rotor shaft 11. The diameter of the lower notch 55 covered here is also larger than the inner diameter D1 of the rotor shaft 11. The extension of the side plates 21, 22 in the vertical direction Z is larger than the outer diameter D2 of the lamination stack 12.

[0053] Thus, the rotor 10 is held in the holding device 60. The lamination stack 12 of the rotor 10 is located between the side plates 21, 22 in the transverse direction Y. The lamination stack 12 of the rotor 10 is located between the end plates 31, 32 in the longitudinal direction X. The extension of the end plates 31, 32 in the transverse direction Y is greater than the outer length L2 of the lamination stack 12, but less than the inner length L1 of the rotor shaft 11. The rotor shaft 11 protrudes beyond the holding device 60 in the transverse direction Y.

[0054] Figure 3 A side view of the holding device 60 is shown in the unfolded state. The first side panel 21 is arranged between the end panels 31 , 32 in the longitudinal direction X. The second side panel 22 , which is covered here, is also arranged in the longitudinal direction X between the end panels 31 , 32 .

[0055] The side panels 21 , 22 each have an upper end region 40 and a lower end region 50 . The end regions 40 , 50 are each located on the outside in the vertical direction Z. The lower end region 50 is located opposite the upper end region 40 in the vertical direction Z.

[0056] The upper recess 45 is arranged in the upper end region 40 of the side plates 21 , 22 . The lower recess 55 is arranged in the lower end region 50 of the side plates 21 , 22 .

[0057] The upper recesses 45 are arranged offset from one another in the upper end region 40 in the longitudinal direction X. In this case, the distance between two adjacent upper recesses 45 in the longitudinal direction X is greater than the outer diameter D2 of the laminated core 12 .

[0058] The lower recesses 55 are also arranged offset from one another in the lower end region 50 in the longitudinal direction X. In this case, the distance between two adjacent lower recesses 55 is greater than the outer diameter D2 of the laminated core 12 .

[0059] In this case, each of the lower recesses 55 is arranged centrally in the longitudinal direction X between two upper recesses 45 .

Claims

1. A holding device (60) for holding a plurality of rotors (10) for an electric machine, wherein: The rotors (10) to be held each have a rotor shaft (11) and a lamination stack (12). Characterized in that the holding device comprises: a first side plate (21), a second side plate (22), a first end plate (31) and a second end plate (32), The first side plate (21) and the second side plate (22) each have a notch for receiving the rotor shaft (11). The first end plate (31) and the second end plate (32) can swing relative to the first side plate (21) and the second side plate (22) respectively around a swing axis extending in a vertical direction (Z), By swinging the first end plate (31) and the second end plate (32) relative to the first side plate (21) and the second side plate (22), the retaining device (60) can be transformed from a folded state to an unfolded state, in which the two end plates are parallel to the two side plates, and in the unfolded state, the two end plates are perpendicular to the two side plates.

2. The holding device (60) for holding a plurality of rotors (10) for electric motors according to claim 1, characterized in that: When the holding device (60) is in a folded state and an unfolded state, the two end plates are parallel to each other, and the two side plates are parallel to each other.

3. The holding device (60) for holding a plurality of rotors (10) for electric motors according to claim 1 or 2, characterized in that: The two end panels and the two side panels are made of thermoplastic.

4. The holding device (60) for holding a plurality of rotors (10) for electric motors according to claim 3, characterized in that: The thermoplastic is polyoxymethylene.

5. A supporting device, characterized in that: It includes: at least one holding device (60) for holding a plurality of rotors (10) for an electric machine according to any one of claims 1 to 4 and a plurality of rotors (10) held in the holding device, The rotor shaft (11) of the rotor (10) has an inner diameter (D1) and an inner length (L1), The lamination stack (12) of the rotor (10) has an outer diameter (D2) and an outer length (L2). The inner diameter (D1) is smaller than the outer diameter (D2), the inner length (L1) is larger than the outer length (L2), The holding device (60) is in an expanded state, The rotor shaft (11) is received in the notches of the two side plates respectively.

6. The support device according to claim 5, characterized in that The two side panels each have an upper notch (45) arranged in an upper end region (40) of the side panels. The upper notch (45) is designed to be semicircular. The diameter of the upper notch (45) is greater than the inner diameter (D1) of the rotor shaft (11).

7. The support device according to claim 6, characterized in that The upper notches (45) are arranged offset from each other along the longitudinal direction (X). The distance between two adjacent upper notches (45) in the longitudinal direction (X) is greater than the outer diameter (D2) of the laminated core (12).

8. The support device according to claim 7, characterized in that The two side panels each have a lower notch (55) arranged in a lower end region (50) of the side panels. The lower notch (55) is designed to be semicircular. The diameter of the lower notch (55) is larger than the inner diameter (D1) of the rotor shaft (11). The lower end region (50) is located opposite the upper end region (40) in the vertical direction (Z).

9. The support device according to claim 8, characterized in that The lower notches (55) are arranged offset from each other along the longitudinal direction (X). The distance between two adjacent lower notches (55) is greater than the outer diameter (D2) of the lamination stack (12). Each of the lower notches (55) is arranged centrally between each two upper notches (45) along the longitudinal direction (X).

10. A support device according to any one of claims 5 to 9, characterized in that The extension of the two side plates in the vertical direction (Z) is greater than the outer diameter (D2) of the lamination stack (12).

11. A support device according to any one of claims 5 to 9, characterized in that In the unfolded state of the holding device (60), the extension of the two end plates in the transverse direction (Y) is greater than the outer length (L2) of the lamination stack (12).

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