Bearing arrangement for rotors

Abstract

A bearing arrangement according to the invention for rotors comprises at least one holding device for holding a plurality of rotors for electric motors, wherein the rotors to be held each have a rotor shaft and a laminated core. The holding device comprises a first side plate, a second side plate, a first end plate and a second end plate. The side plates each have recesses for receiving rotor shafts. The end plates are each able to be pivoted relative to the side plates about pivot axes extending in a vertical direction. The holding device is able to be brought from a folded state, in which the end plates are oriented parallel to the side plates, into an unfolded state, in which the end plates are oriented at right angles to the side plates, by pivoting the end plates relative to the side plates. The bearing arrangement according to the invention also comprises a plurality of rotors that are held in the holding device. The rotor shafts of the rotors each have an inner diameter and an inner length, and the laminated cores of the rotors each have an outer diameter and an outer length. The inner diameter is smaller than the outer diameter, and the inner length is greater than the outer length. The holding device is in the unfolded state. The rotor shafts are each received in recesses in the side plates.

Description

[0001] Bearing arrangement for rotors

[0002] Description:

[0003] The invention relates to a bearing arrangement for rotors, which comprises at least one holding device for holding a plurality of rotors and a plurality of rotors held therein.

[0004] DE 102022 001 424 A1 discloses an electric motor with a rotor. The rotor comprises a laminated core and a rotor shaft inserted into the laminated core. The rotor shaft is approximately rotationally symmetrical. The laminated core consists of individual laminations stacked in the axial direction. The rotor is rotatable about a rotational axis relative to the stator.

[0005] In the manufacture of electric motors, rotors are produced by connecting a laminated core and a rotor shaft in a rotationally fixed manner. The manufactured rotors are stored temporarily and later inserted into a stator. The rotors are placed in holding fixtures for intermediate storage and transport.

[0006] FR 2 717445 A1 discloses a device for securing gas cylinders during transport. The device comprises side plates and end plates, each of which has a recess for accommodating a circular-cylindrical gas cylinder.

[0007] FR 2.186.004 A5 discloses a device for holding bottles for transport. The device comprises side plates, each of which has a recess for accommodating circular-cylindrical bottles.

[0008] The invention is based on the object of specifying a bearing arrangement for rotors, which comprises at least one holding device for holding a plurality of rotors and a plurality of rotors held therein.

[0009] The object is achieved by a bearing arrangement for rotors having the features specified in claim 1. Advantageous embodiments and further developments are the subject of the subclaims.

[0010] ISI \ EIDOPAT December 3, 2024 A bearing arrangement for rotors according to the invention comprises at least one holding device for holding a plurality of rotors for electric motors, wherein the rotors to be held each have a rotor shaft and a laminated core. The holding device comprises a first side plate, a second side plate, a first end plate, and a second end plate. The side plates each have recesses for receiving rotor shafts. The end plates can be pivoted relative to the side plates about pivot axes running in a vertical direction. By pivoting the end plates relative to the side plates, the holding device can be brought from a folded state, in which the end plates are oriented parallel to the side plates, into an unfolded state, in which the end plates are oriented at right angles to the side plates.The bearing assembly according to the invention also comprises a plurality of rotors held in the holding device. The rotor shafts of the rotors each have an inner diameter and an inner length, and the laminated cores of the rotors each have an outer diameter and an outer length. The inner diameter is smaller than the outer diameter, and the inner length is greater than the outer length. The holding device is in the deployed state. The rotor shafts are each received in recesses of the side plates.

[0011] The bearing arrangement according to the invention allows for simple intermediate storage and transport of multiple rotors. In the unfolded state, the holding device allows for the accommodation of multiple rotors for intermediate storage and transport. When not needed, the holding device is converted from the unfolded state to the folded state by pivoting the end plates relative to the side plates. In the folded state, the holding device is relatively flat and thus requires only a relatively small amount of space.

[0012] According to a preferred embodiment of the invention, the side plates each have upper recesses arranged in an upper end region of the side plates. The upper recesses are semicircular, and a diameter of the upper recesses is larger than the inner diameter of the rotor shafts. If the holding device is oriented such that the vertical direction is perpendicular to a floor and the upper recesses face away from the floor, the circular-cylindrical rotor shafts can be inserted into the upper recesses.

[0013] According to a preferred embodiment of the invention, the upper recesses are arranged offset from one another in a longitudinal direction, and the distance between two adjacent upper recesses in the longitudinal direction is greater than the outer diameter of the laminated cores. Thus, the rotors can be inserted into adjacent upper recesses without collision.

[0014] According to an advantageous development of the invention, the side plates each have lower recesses arranged in a lower end region of the side plates. The lower recesses are semicircular, and a diameter of the lower recesses is larger than the inner diameter of the rotor shafts. The lower end region is vertically opposite the upper end region. If the holding device is oriented such that the vertical direction is perpendicular to a floor and the lower recesses face away from the floor, the circular-cylindrical rotor shafts can be inserted into the lower recesses.

[0015] According to an advantageous development of the invention, the lower recesses are arranged offset from one another in the longitudinal direction, and the distance between two adjacent lower recesses in the longitudinal direction is greater than the outer diameter of the laminated cores. Each of the lower recesses is arranged centrally in the longitudinal direction between two upper recesses. This design allows several holding devices with rotors held therein to be stacked on top of one another if the upper recesses and the lower recesses are alternately facing away from the ground.

[0016] According to an advantageous embodiment of the invention, a diameter of the lower recesses is smaller than the outer diameter of the rotor shafts. According to an advantageous embodiment of the invention, a diameter of the upper recesses is smaller than the outer diameter of the rotor shafts.

[0017] According to a preferred embodiment of the invention, the vertical extension of the side plates is greater than the outer diameter of the laminated cores. Thus, the rotors can be inserted collision-free into adjacent upper and lower recesses of stacked holding devices.

[0018] According to an advantageous embodiment of the invention, in the unfolded state of the holding device, the extension of the end plates in a transverse direction is greater than the outer length of the laminated cores. Thus, laminated cores of the rotors can be inserted collision-free between the side plates of the holding device. According to an advantageous embodiment of the invention, in the folded state of the holding device and in the unfolded state of the holding device, the end plates are oriented parallel to one another, and the side plates are oriented parallel to one another. The holding device is kinematically designed in the form of a four-bar linkage.

[0019] According to a preferred embodiment of the invention, the end plates and the side plates are made of a thermoplastic material, in particular polyoxymethylene. The end plates and the side plates have a thickness of 4 mm to 6 mm, preferably 5 mm. Such thermoplastic materials, such as polyoxymethylene, are relatively robust and durable, yet also do not cause scratches or other damage to the metal rotor shafts they house.

[0020] According to an advantageous embodiment of the invention, an extension of the side plates in the vertical direction is at least twice as large as a diameter of the recesses, i.e. twice as large as a diameter of the upper recesses and twice as large as a diameter of the lower recesses.

[0021] According to an advantageous embodiment of the invention, the at least one holding device has locking means for positively locking the holding device to a holding device placed vertically. This embodiment allows multiple holding devices to be stacked on top of one another and transported safely.

[0022] The invention is not limited to the combination of features in the claims. Further possible combinations of claims and / or individual claim features and / or features of the description and / or the figures will become apparent to those skilled in the art, particularly from the task and / or the problem posed by comparison with the prior art. The invention will now be explained in more detail with reference to figures. The invention is not limited to the exemplary embodiments shown in the figures. The figures represent the subject matter of the invention only schematically. They show:

[0023] Figure 1 : a perspective view of a holding device,

[0024] Figure 2: a plan view of a bearing arrangement and

[0025] Figure 3: a side view of a holding device.

[0026] Figure 1 shows a perspective view of a holding device 60 for holding a plurality of rotors 10 (not shown here) for electric motors. 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 made of a thermoplastic material, in this case polyoxymethylene, and have a thickness of approximately 5 mm.

[0027] Each of the side plates 21, 22 is connected to the first end plate 31 and the second end plate 32 by means of one or more hinges 15. The end plates 31, 32 can be pivoted relative to the side plates 21, 22 by means of the hinges 15 about pivot axes running in a vertical direction Z. A longitudinal direction X runs perpendicular to the vertical direction Z. A transverse direction Y runs perpendicular to the longitudinal direction X and perpendicular to the vertical direction Z.

[0028] The holding device 60 can be moved from a folded state to an unfolded state by pivoting the end plates 31, 32 relative to the side plates 21, 22 about said pivot axes by an angle of 90°. In the illustration shown here, the holding device 60 is in the unfolded state.

[0029] In the unfolded state, the end plates 31, 32 extend parallel to one another in the transverse direction Y, and the side plates 21, 22 extend parallel to one another in the longitudinal direction X. The end plates 31, 32 are thus oriented at right angles to the side plates 21, 22. The holding device 60 has a rectangular shape, viewed in the vertical direction Z. In the folded state, the end plates 31, 32 extend parallel to one another in the longitudinal direction X, and the side plates 21, 22 extend parallel to one another in the longitudinal direction X. The end plates 31, 32 are thus oriented parallel to the side plates 21, 22. The holding device 60 is thus relatively flat in the transverse direction Y. An extension of the holding device in the transverse direction Y corresponds approximately to the thickness of two plates 21, 22, 31, 32, i.e. in the present case approximately 10 mm.

[0030] The side plates 21, 22 each have a plurality of upper recesses 45 and lower recesses 55. The upper recesses 45 and the lower recesses 55 are each approximately semicircular. The upper recesses 45 are offset from one another in the longitudinal direction X. The lower recesses 55 are also offset from one another in the longitudinal direction X.

[0031] Figure 2 shows a plan view of a bearing assembly comprising a holding device 60 and a plurality of rotors 10 held therein. The holding device 60 is in the deployed state. The holding device 60 is oriented such that the vertical direction Z is perpendicular to a floor. The side plates 21, 22 extend in the longitudinal direction X, and the end plates 31, 32 extend in the transverse direction Y.

[0032] The rotors 10 each have a rotor shaft 11 and a laminated core 12. The rotor shaft 11 is inserted into the laminated core 12. The rotor shaft 11 and the laminated core 12 are non-positively and non-rotatably connected to each other to form the rotor 10. The rotors 10 are designed to be approximately rotationally symmetrical about a rotational axis. In the illustration shown here, the rotational axes of the rotors 10 run in the transverse direction Y.

[0033] The rotors 10 are identically constructed. The rotor shafts 11 of the rotors 10 each have an inner diameter D1 and an inner length L1. The laminated cores 12 of the rotors 10 each have an outer diameter D2 and an outer length L2. The inner diameter D1 is smaller than the outer diameter D2, and the inner length L1 is greater than the outer length L2.

[0034] The rotor shafts 11 of the rotors 10 are each accommodated in the upper recesses 45 of the side plates 21, 22. A diameter of the upper recesses 45 is larger than the inner diameter D1 of the rotor shafts 11. A diameter of the lower recesses 55, which are concealed here, is also larger than the inner diameter D1 of the rotor shafts 11. An extension of the side plates 21, 22 in the vertical direction Z is larger than the outer diameter D2 of the laminated cores 12.

[0035] The rotors 10 are thus held in the holding device 60. The laminated cores 12 of the rotors 10 are located in the transverse direction Y between the side plates 21, 22. The laminated cores 12 of the rotors 10 are located in the longitudinal direction X between the end plates 31, 32. An extension of the end plates 31, 32 in the transverse direction Y is greater than the outer length L2 of the laminated cores 12, but smaller than the inner length L1 of the rotor shafts 11. The rotor shafts 11 protrude beyond the holding device 60 in the transverse direction Y.

[0036] Figure 3 shows a side view of a holding device 60 in the unfolded state. The first side plate 21 is arranged in the longitudinal direction X between the end plates 31, 32. The second side plate 22, which is concealed here, is also arranged in the longitudinal direction X between the end plates 31, 32.

[0037] The side plates 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 opposite the upper end region 40 in the vertical direction Z.

[0038] The upper recesses 45 are arranged in the upper end region 40 of the side plates 21, 22. The lower recesses 55 are arranged in the lower end region 50 of the side plates 21, 22.

[0039] The upper recesses 45 are arranged offset from one another in the longitudinal direction X in the upper end region 40. The distance between two adjacent upper recesses 45 in the longitudinal direction X is greater than the outer diameter D2 of the laminated cores 12.

[0040] The lower recesses 55 are also arranged offset from one another in the longitudinal direction X in the lower end region 50. The distance between two adjacent lower recesses 55 is greater than the outer diameter D2 of the laminated cores 12.

[0041] Each of the lower recesses 55 is arranged centrally in the longitudinal direction X between two upper recesses 45. List of reference symbols

[0042] 10 Rotor

[0043] 11 Rotor shaft

[0044] 12 sheet package

[0045] 21 first side plate

[0046] 22 second side plate

[0047] 31 first front plate

[0048] 32 second front plate

[0049] 40 upper end range

[0050] 45 upper recess

[0051] 50 lower end range

[0052] 55 lower recess

[0053] 60 holding device

[0054] D1 inner diameter

[0055] D2 outer diameter

[0056] L1 inner length

[0057] L2 outer length

[0058] X Longitudinal direction

[0059] Y transverse direction

[0060] Z vertical direction

Claims

Patent claims:

1. A bearing arrangement for rotors, comprising at least one holding device (60) for holding a plurality of rotors (10) for electric motors, wherein the rotors (10) to be held each have a rotor shaft (11) and a laminated core (12), and wherein 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), wherein the side plates (21, 22) each have recesses (45, 55) for receiving rotor shafts (11), wherein the end plates (31, 32) are pivotable relative to the side plates (21, 22) about pivot axes running in a vertical direction (Z), and wherein the holding device (60) can be pivoted by pivoting the end plates (31, 32) relative to the side plates (21, 22) from a folded state, in which the end plates (31, 32) parallel to the side plates (21, 22), into an unfolded state in which the end plates (31,32) are oriented at right angles to the side plates (21, 22), and a plurality of rotors (10) held in the holding device (60), wherein the rotor shafts (11) of the rotors (10) each have an inner diameter (D1) and an inner length (L1), and the laminated cores (12) of the rotors (10) each have an outer diameter (D2) and an outer length (L2), wherein the inner diameter (D1) is smaller than the outer diameter (D2), and the inner length (L1) is greater than the outer length (L2), and wherein the holding device (60) is in the unfolded state, and the rotor shafts (11) are each received in recesses (45, 55) of the side plates (21, 22).

2. Bearing arrangement according to claim 1, characterized in that the side plates (21, 22) each have upper recesses (45) which are arranged in an upper end region (40) of the side plates (21, 22), and that the upper recesses (45) are semicircular, and that a diameter of the upper recesses (45) is larger than the inner diameter (D1) of the rotor shafts (11).

3. Bearing arrangement according to claim 2, characterized in that the upper recesses (45) are arranged offset from one another in a longitudinal direction (X), and that a distance between two adjacent upper recesses (45) from one another in the longitudinal direction (X) is greater than the outer diameter (D2) of the laminated cores (12).

4. Bearing arrangement according to claim 3, characterized in that the side plates (21, 22) each have lower recesses (55) which are arranged in a lower end region (50) of the side plates (21, 22), and that the lower recesses (55) are semicircular, and that a diameter of the lower recesses (55) is larger than the inner diameter (D1) of the rotor shafts (11), wherein the lower end region (50) is opposite the upper end region (40) in the vertical direction (Z).

5. Bearing arrangement according to claim 4, characterized in that the lower recesses (55) are arranged offset from one another in the longitudinal direction (X), and in that a distance between two adjacent lower recesses (55) is greater than the outer diameter (D2) of the laminated cores (12), and in that each of the lower recesses (55) is arranged centrally between two upper recesses (45) in the longitudinal direction (X).

6. Bearing arrangement according to one of claims 4 to 5, characterized in that a diameter of the lower recesses (55) is smaller than the outer diameter (D2) of the rotor shafts (11), and / or that a diameter of the upper recesses (45) is smaller than the outer diameter (D2) of the rotor shafts (11).

7. Bearing arrangement according to one of the preceding claims, characterized in that an extension of the side plates (21, 22) in the vertical direction (Z) is greater than the outer diameter (D2) of the laminated cores (12).

8. Bearing arrangement according to one of the preceding claims, characterized in that in the unfolded state of the holding device (60) an extension of the end plates (31, 32) in a transverse direction (Y) is greater than the outer length (L2) of the laminated cores (12).

9. Bearing arrangement according to one of the preceding claims, characterized in that in the folded state and in the unfolded state of the holding device (60) the end plates (31, 32) are oriented parallel to one another, and the side plates (21, 22) are oriented parallel to one another.

10. Bearing arrangement according to one of the preceding claims, characterized in that the end plates (31, 32) and the side plates (21, 22) consist of a thermoplastic material, in particular polyoxymethylene.

11. Bearing arrangement according to one of the preceding claims, characterized in that an extension of the side plates (21, 22) in the vertical direction (Z) is at least twice as large as a diameter of the recesses (45, 55).

12. Bearing arrangement according to one of the preceding claims, characterized in that the at least one holding device (60) has locking means for positively locking the holding device (60) with a holding device (60) placed in the vertical direction (Z).

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