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CN-224233507-U - Externally-attached type variable frequency motor rotor magnetic shoe positioning device

CN224233507UCN 224233507 UCN224233507 UCN 224233507UCN-224233507-U

Abstract

The application relates to a magnetic shoe positioning device of an externally-attached variable frequency motor rotor, which comprises a back plate, wherein an axial positioning plate is arranged on the left side surface of the back plate, the axial positioning plate is provided with a boss and a chute, a magnetic sheet is connected in the chute in a sliding manner, and a chamfer for preventing the magnetic sheet from separating is arranged along the edge of the chute. When the magnetic disk is implemented, the back plate and the axial positioning plate are butted to the end face of the rotor core, and the magnetic disk is used for magnetically connecting the back plate, the axial positioning plate and the end face of the rotor core through magnetic force. The product has simple structure and convenient operation, is tightly connected with the end face of the rotor core, effectively ensures the axial positioning size of the magnetic shoe, and can rapidly and effectively take out the axial positioning device of the magnetic shoe from the finished rotor after the magnetic shoe of the rotor is glued and dried. The product effectively ensures that the magnetic shoe is axially positioned on the surface of the rotor core, avoids the problem of uneven end surfaces of the magnetic shoe around the rotor core in the prior art, and improves the production efficiency and performance of the rotor.

Inventors

  • ZHAN SHIZHONG
  • XU KAI
  • FENG QINGSONG
  • WANG YANG
  • HUANG CHENGZHONG
  • WEN GENG
  • SHI JIANHUI
  • ZHOU YOUKUN
  • CAO BO
  • LI BICHENG

Assignees

  • 黄石东贝电机有限公司

Dates

Publication Date
20260512
Application Date
20250415

Claims (10)

  1. 1. The utility model provides an outer subsides formula inverter motor rotor magnetic shoe positioner, its characterized in that, includes backplate (1), backplate (1) left surface is equipped with axial positioning board (2), axial positioning board (2) are equipped with boss (201) and spout (202), sliding connection has magnetic sheet (3) in spout (202), boss (201) are equipped with along spout (202) edge and prevent chamfer (203) that magnetic sheet (3) break away from.
  2. 2. The externally-attached variable frequency motor rotor magnetic shoe positioning device according to claim 1, wherein the back plate (1) and the axial positioning plate (2) are integrally cast or fixedly connected.
  3. 3. The positioning device for the rotor magnetic shoe of the externally-attached variable frequency motor according to claim 1, wherein the back plate (1) and the axial positioning plate (2) are respectively in a circular ring shape, and the central axes of the back plate and the axial positioning plate are coincident.
  4. 4. A positioning device for magnetic shoes of a rotor of a variable frequency motor according to claim 3, characterized in that an opening (101) penetrating the middle part of the back plate (1) in the axial direction is arranged.
  5. 5. The positioning device for the rotor magnetic shoe of the externally-attached variable frequency motor according to claim 4, wherein the opening (101) is circular.
  6. 6. The external-attached variable frequency motor rotor magnetic shoe positioning device as claimed in claim 3, wherein a plurality of first nail holes (4) which axially penetrate through the back plate (1) and the axial positioning plate (2) are arranged on the back plate (1) and the axial positioning plate (2) together, second nail holes corresponding to the first nail holes (4) are also arranged on the end face of the rotor core (6), the first nail holes (4) and the second nail holes are connected through willow nails (5), and when the external-attached variable frequency motor rotor magnetic shoe positioning device is implemented, the first nail holes (4), the second nail holes and the willow nails (5) are used for ensuring that the back plate (1), the axial positioning plate (2) and the rotor core (6) keep the central axes coincident.
  7. 7. The positioning device for the rotor magnetic shoe of the external-mounted variable-frequency motor according to claim 6, wherein the number of the first nail holes (4) is 3.
  8. 8. The positioning device for the rotor magnetic shoe of the externally-attached variable frequency motor according to claim 6, wherein all the first nail holes (4) are distributed around the central axes of the back plate (1) and the axial positioning plate (2).
  9. 9. The positioning device for the rotor magnetic shoe of the externally-attached variable frequency motor according to claim 1, wherein the sliding groove (202) divides the boss (201) into two parts which are equal in area and symmetrical.
  10. 10. The external-attached variable frequency motor rotor magnetic shoe positioning device according to claim 1, wherein the magnetic sheet (3) is a strong magnetic sheet.

Description

Externally-attached type variable frequency motor rotor magnetic shoe positioning device Technical Field The utility model relates to the field of permanent magnet motor manufacturing, in particular to a rotor magnetic shoe positioning device of an externally-attached variable frequency motor. Background In the current manufacturing process of the permanent magnet motor, the externally-attached rotor magnetic shoe is axially positioned on the rotor core, and generally, two axial fixing modes are adopted, namely, a baffle plate is arranged at the tail end of the rotor core, and the rotor core is supplemented with a cushion block with a certain thickness. However, if one end of the magnetic shoe is required to extend out of the rotor core for a certain distance in a specific occasion, no effective axial positioning piece exists, and both axial fixing modes are not available. In order to cope with the problem that the two axial fixing modes are not available in specific occasions, the prior art adopts the following temporary measures, namely, a backing plate is added at the bottom of an iron core, and a throat hoop is used for fixing the magnetic shoe at the periphery of the magnetic shoe. However, the rotor made by the temporary measure can cause uneven end surfaces of the magnetic shoes around the rotor core and complex process. Disclosure of utility model Aiming at the problems, the utility model provides a magnetic shoe positioning device for a rotor of an externally-attached variable frequency motor, which can overcome the defects in the prior art: The utility model provides an outer subsides formula inverter motor rotor magnetic shoe positioner, includes the backplate, the backplate left surface is equipped with axial positioning board, axial positioning board is equipped with boss and spout, sliding connection has the magnetic sheet in the spout, be equipped with along the spout edge and prevent the chamfer that the magnetic sheet breaks away from. When the magnetic disk is implemented, the back plate and the axial positioning plate are butted to the end face of the rotor core, and the magnetic disk is used for magnetically connecting the back plate, the axial positioning plate and the end face of the rotor core through magnetic force. Preferably, the back plate and the axial positioning plate are integrally cast or fixedly connected. Preferably, the back plate and the axial positioning plate are respectively annular, and the central axes of the back plate and the axial positioning plate are coincident. Preferably, the middle part of the back plate is provided with an opening penetrating through the back plate in the axial direction. Preferably, the opening is circular. Preferably, the back plate and the axial positioning plate are jointly provided with a plurality of first nail holes penetrating through the back plate and the axial positioning plate in the axial direction, the end face of the rotor core is also provided with second nail holes corresponding to the first nail holes, and the first nail holes and the second nail holes are connected through the willow nails. In implementation, the first nail hole, the second nail hole and the willow nail are used for ensuring that the backboard, the axial positioning board and the rotor core keep the central axis coincident (namely, the circle center coincident). Preferably, the number of the first nail holes is 3. Preferably, all the nail holes are distributed around the central axis of the back plate and the axial positioning plate. Preferably, the sliding groove divides the boss into two parts with equal and symmetrical areas. Preferably, the magnetic sheet is a strong magnetic sheet. The magnetic shoe axial positioning device has the beneficial effects that the magnetic shoe axial positioning device is simple in structure, convenient to operate, tightly connected with the end face of the rotor core, and capable of effectively guaranteeing the axial positioning size of the magnetic shoe, and the magnetic shoe axial positioning device can be rapidly and effectively taken out from a finished rotor after the rotor magnetic shoe is dried. The product effectively ensures that the magnetic shoe is axially positioned on the surface of the rotor core, avoids the problem of uneven end surfaces of the magnetic shoe around the rotor core in the prior art, and improves the production efficiency and performance of the rotor. Drawings The utility model is described in further detail below with reference to the accompanying drawings. Fig. 1 is a front view of a rotor magnetic shoe positioning device of an external-mounted variable frequency motor. Fig. 2 is a side view of a magnetic shoe positioning device for a rotor of an external-mounted variable-frequency motor. Fig. 3 is a perspective view of a positioning device for a rotor magnetic shoe of an externally-attached variable frequency motor. Fig. 4 is a rear view of the magnetic shoe positioning device for the rotor