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CN-224229199-U - Planetary gear box capable of serving as motor end cover and motor

CN224229199UCN 224229199 UCN224229199 UCN 224229199UCN-224229199-U

Abstract

The application relates to a planetary gear box capable of serving as a motor end cover, which comprises a planet carrier, a sun gear and a connector, wherein the connector is in interference fit connection with the sun gear, axial positioning is provided through a shaft shoulder of the sun gear, an input stage bearing is arranged on the outer circle of the connector, and radial support is provided by the input stage bearing. The application also relates to a motor, which comprises the planetary gear box capable of serving as a motor end cover, a motor stator shell and a motor rotor, wherein the outer circle of the fixed end of the planet carrier is fixedly connected with the motor stator shell, and the connector is fixedly connected with the motor rotor. The application effectively improves the space utilization rate, greatly reduces the number of parts and the cost of the whole machine, overcomes the defect that the motor can not provide high torque by integrating the motor and the gear box, and can be applied to occasions with high torque requirements.

Inventors

  • SUN ZHIPENG
  • LING ZIJIAN
  • DIAO XIANGXIANG

Assignees

  • 苏州伟创电气科技股份有限公司

Dates

Publication Date
20260512
Application Date
20250617

Claims (10)

  1. 1. The planetary gear box capable of serving as a motor end cover is characterized by comprising a planet carrier, a sun gear and a connector, wherein the connector is connected with the sun gear in an interference fit mode, axial positioning is provided through a shaft shoulder of the sun gear, an input stage bearing is arranged on the outer circle of the connector, and radial support is provided by the input stage bearing.
  2. 2. The planetary gear box capable of serving as a motor end cover according to claim 1, wherein first check rings are arranged at two ends of an inner ring and an outer ring of the input stage bearing, and the first check rings are embedded into a preset bearing position of the planet carrier to limit axial movement of the input stage bearing.
  3. 3. The planetary gear box capable of serving as an end cover of a motor according to claim 2, wherein a second check ring is arranged on the connector, and the second check ring and a shaft shoulder preset on the connector jointly clamp an inner ring of the input stage bearing to limit the axial movement of the connector.
  4. 4. The planetary gear box capable of serving as an end cover of a motor according to claim 1, wherein the planetary gear box comprises a gear ring, planetary gears and a pin shaft, the pin shaft is arranged on a planetary gear carrier, the planetary gears are arranged on the pin shaft, the planetary gear carrier is arranged inside the gear ring and is in meshed connection through the planetary gears, and the planetary gear carrier drives the sun gear to rotate tangentially together.
  5. 5. The planetary gear box capable of serving as a motor end cover according to claim 4, wherein the planet carrier is provided with a slot for placing the planet wheel, the center of the slot can penetrate into the pin shaft, and the planet wheel penetrates into the pin shaft.
  6. 6. The planetary gear box capable of serving as a motor end cover according to claim 5, wherein friction plates are arranged at two ends of the planetary gear respectively, so that friction force of the planetary gear during operation is reduced.
  7. 7. The planetary gear box capable of serving as a motor end cover according to claim 6, wherein two output stage bearings are arranged on the planet carrier, the outer circle of each output stage bearing is connected with the gear ring in a matching mode, and meanwhile the gear ring is connected with a plurality of planetary gears in a meshing mode.
  8. 8. An electric motor, characterized by comprising the planetary gear box capable of serving as an end cover of the electric motor according to any one of claims 1-7, and further comprising an electric motor stator shell and an electric motor rotor, wherein the outer circle of a fixed end of the planetary carrier is fixedly connected with the electric motor stator shell, and the connector is fixedly connected with the electric motor rotor.
  9. 9. The motor of claim 8, wherein the outer circumference of the planet carrier matches the shape and size of the motor stator housing.
  10. 10. The motor of claim 8, wherein the outer circle of the fixed end of the planet carrier is connected with the motor stator shell through bolt fastening, and the connector is connected with the motor rotor through bolt fastening.

Description

Planetary gear box capable of serving as motor end cover and motor Technical Field The application relates to the technical field of planetary transmission mechanisms, in particular to a planetary gear box capable of serving as a motor end cover and a motor. Background At present, the motor structure generally comprises front and rear end covers and stator iron cores, if larger torque is required, a speed reducer is required to be additionally connected, the motor does not have the function of the speed reducer, the space requirement is more severe due to partial use scenes, the external gear box of the motor cannot meet the space requirement, the motor or the gear box can only be reduced, the performances of the motor and the gear box are reduced, and the service life of the gear box is influenced. Accordingly, the prior art has drawbacks and needs improvement. Disclosure of Invention The application provides a planetary gear box capable of serving as a motor end cover and a motor, so as to solve the problems. In a first aspect, the application provides a planetary gearbox capable of serving as a motor end cover, comprising a planet carrier, a sun gear and a connector, wherein the connector is in interference fit connection with the sun gear, axial positioning is provided through a shaft shoulder of the sun gear, an input stage bearing is arranged on the outer circle of the connector, and radial support is provided by the input stage bearing. Optionally, first check rings are arranged at two ends of an inner ring and an outer ring of the input stage bearing, and the first check rings are embedded into bearing positions preset on the planet carrier to limit axial movement of the input stage bearing. Optionally, a second check ring is arranged on the connector, and the second check ring and a shaft shoulder preset on the connector jointly clamp the inner ring of the input stage bearing to limit the axial movement of the connector. Optionally, the planet carrier comprises a gear ring, a planet wheel and a pin shaft, wherein the pin shaft is arranged on the planet carrier, the planet wheel is arranged on the pin shaft, the planet carrier is arranged in the gear ring and is in meshed connection through the planet wheel, and the planet carrier drives the sun wheel to rotate tangentially together. Optionally, the planet carrier is provided with a slot for placing the planet wheel, the center of the slot can penetrate into the pin shaft, and the planet wheel penetrates through the pin shaft. Optionally, a friction plate is respectively arranged at two ends of the planet gear, so that friction force of the planet gear during operation is reduced. Optionally, two output stage bearings are arranged on the planet carrier, the outer circle of each output stage bearing is connected with the corresponding gear ring in a matching way, and meanwhile, the gear rings are respectively connected with a plurality of planet gears in a meshing way. In a second aspect, the application provides a motor, which comprises the planetary gear box capable of serving as a motor end cover, a motor stator shell and a motor rotor, wherein the outer circle of a fixed end of the planet carrier is fixedly connected with the motor stator shell, and the connector is fixedly connected with the motor rotor. Optionally, the outer circle of the planet carrier is matched with the shape and the size of the motor stator shell. Optionally, the outer circle of the fixed end of the planet carrier is connected with the motor stator shell through bolt fastening, and the connector is connected with the motor rotor through bolt fastening. Compared with the prior art, the technical scheme provided by the embodiment of the application has the following advantages: The embodiment of the application effectively improves the space utilization rate, greatly reduces the number of parts, reduces the cost of the whole machine, and greatly reduces the space occupied by the whole machine by providing the planetary gear box which can serve as the motor end cover, and simultaneously integrates the motor and the gear box into a whole, shortens the whole axial distance, overcomes the defect that the motor can not provide high torque, and can be applied to occasions with high torque requirements. Drawings The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application. In order to more clearly illustrate the embodiments of the application or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, and it will be obvious to a person skilled in the art that other drawings can be obtained from these drawings without inventive effort. One or more embodiments are illustrated by way of example and not limitation in t