Motor integrated planetary reducer

Abstract

The utility model provides a motor integrated planetary reducer. The motor integrated planetary reducer comprises a shell, a cover plate, an inner gear ring, a sun gear, a planet gear assembly and a planet carrier. The right end of the shell is used for being fixedly connected with a stator of a motor. The sun gear is located in the shell and used for being fixedly connected with a rotor of the motor. The inner gear ring is fixed on the inner side of the shell; the cover plate is fixed at the left end of the shell; a mounting hole is formed in the center of the cover plate; the planet carrier is rotationally connected into the mounting hole through a first bearing; the planet wheel assembly is installed in the planet carrier and comprises a pin column, a roller pin and a planet wheel. The pin column is fixed on the planet carrier; the planet wheel is rotationally connected to the pin column through the roller pin; the planet gear is a duplicate gear and is provided with a first outer tooth and a second outer tooth; the first outer teeth are meshed with the sun gear; according to the design, the overall structure can be designed to be shorter, and the working stability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of planetary reducers, in particular to a motor-integrated planetary reducer. Background Art

[0002] With the development of science and technology, planetary reducers are being used more and more widely, and the requirements for their stability, accuracy, and specifications are becoming more and more stringent. Generally, the shorter the planetary reducer is designed, the higher the stability and accuracy of its transmission. Under the condition that the number of transmission stages remains unchanged, the current method is to design the reducer and motor as an integrated structure to shorten the length. The transmission method adopts the NGW type transmission method. Since two planet carriers and planetary wheels need to be designed between the two-stage transmission structure, the overall length cannot be shortened, so it needs to be improved. Utility Model Content

[0003] The utility model aims to provide a motor-integrated planetary reducer to solve the problems mentioned in the background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A motor-integrated planetary reducer comprises a housing, a cover plate, an inner gear ring, a sun gear, a planetary gear assembly and a planetary carrier; the right end of the housing is used for fixed connection with the stator of the motor; the sun gear is located in the housing and is used for fixed connection with the rotor of the motor; the inner gear ring is fixed to the inner side of the housing; the cover plate is fixed to the left end of the housing; a mounting hole is provided at the center of the cover plate; the planetary carrier is rotatably connected in the mounting hole through a first bearing; the planetary gear assembly is installed in the planetary carrier, comprising a pin, a needle roller and a planetary gear; the pin is fixed to the planetary carrier; the planetary gear is rotatably connected to the pin through a needle roller; the planetary gear is a double gear having a first outer tooth and a second outer tooth; the first outer tooth meshes with the sun gear; the second outer tooth meshes with the inner gear ring.

[0006] To further describe the present utility model, the planetary gear assemblies are provided in three groups.

[0007] Further description of the utility model: a mounting groove is provided at the center position of the right end of the planet carrier; and the left end of the sun gear is rotatably connected in the mounting groove through a second bearing.

[0008] Further description of the utility model, gaskets are respectively provided at the left and right ends of the planetary gear.

[0009] The beneficial effects of the utility model are:

[0010] In this design, the housing is connected to the motor stator, the sun gear is connected to the motor rotor, and the sun gear forms an integrated structure with the motor. The planetary carrier is directly connected to the cover plate through the bearing. Combined with the NW transmission method, the overall structure is shorter and its working stability is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is the overall structure diagram of the utility model. DETAILED DESCRIPTION

[0012] The utility model is further described below in conjunction with the accompanying drawings:

[0013] like Figure 1 As shown, a motor-integrated planetary reducer comprises a housing 1, a cover plate 2, an inner gear ring 3, a sun gear 4, a planetary gear assembly 5 and a planetary carrier 6; the right end of the housing 1 is used to be fixedly connected to the stator 10 of the motor; the sun gear 4 is located in the housing 1 and is used to be fixedly connected to the rotor 20 of the motor; the inner gear ring 3 is fixed to the inner side of the housing 1; the cover plate 2 is fixed to the left end of the housing 1; a mounting hole 21 is provided in the center of the cover plate 2; the planetary carrier 6 is rotatably connected to the mounting hole 21 through a first bearing 7; the planetary gear assembly 5 is installed in the planetary carrier 6, and comprises a pin 51, a needle roller 52 and a planetary gear 53; the pin 51 is fixed to the planetary carrier 6, and the planetary gear 53 is fixed to the planetary carrier 6. On the star frame 6; the planetary gear 53 is rotatably connected to the pin 51 through a needle roller 52; the planetary gear 53 is a double gear, having a first outer tooth 531 and a second outer tooth 532; the first outer tooth 531 is meshed with the sun gear 4; the second outer tooth 532 is meshed with the inner gear ring 3; the housing 1 of this design is connected to the motor stator 10, and the sun gear 4 is connected to the motor rotor 20, forming an integrated structure with the motor, and a cover plate 2 is installed at the left end of the housing 1 for connecting the planetary frame 6. The transmission mode of the planetary gear assembly 5 adopts NW type transmission, and the sun gear 4 and the inner gear ring 3 are connected through a double gear transmission, so that the overall structure length is shorter and its working stability is improved.

[0014] In this design, the planetary gear assembly 5 is provided in three groups.

[0015] A mounting groove 61 is provided at the center of the right end of the planet carrier 6; the left end of the sun gear 4 is rotatably connected in the mounting groove 61 through a second bearing 8. This arrangement improves the working stability of the sun gear 4 and prevents the sun gear 4 from shaking.

[0016] The above description does not limit the technical scope of the present invention. Any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A motor-integrated planetary reducer, characterized in that: It includes an outer shell, a cover plate, an inner gear ring, a sun gear, a planetary gear assembly and a planetary carrier; the right end of the outer shell is used for fixed connection with the stator of the motor; the sun gear is located in the outer shell and is used for fixed connection with the rotor of the motor; the inner gear ring is fixed on the inner side of the outer shell; the cover plate is fixed on the left end of the outer shell; a mounting hole is provided in the center of the cover plate; the planetary carrier is rotatably connected in the mounting hole through a first bearing; the planetary gear assembly is installed in the planetary carrier, including a pin, a needle roller and a planetary gear; the pin is fixed on the planetary carrier; the planetary gear is rotatably connected to the pin through a needle roller; the planetary gear is a double gear, having a first outer tooth and a second outer tooth; the first outer tooth meshes with the sun gear; the second outer tooth meshes with the inner gear ring.

2. The motor-integrated planetary reducer according to claim 1, characterized in that: The planetary gear assemblies are arranged in three groups.

3. The motor-integrated planetary reducer according to claim 1, characterized in that: A mounting groove is provided at the center position of the right end of the planet carrier; the left end of the sun gear is rotatably connected in the mounting groove through a second bearing.

4. The motor-integrated planetary reducer according to claim 1, characterized in that: Gaskets are respectively arranged at the left and right ends of the planetary gear.

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