A front and rear planetary gear carrier for a transmission device

Abstract

This utility model provides a front and rear planetary gear carrier for a transmission device, belonging to the field of planetary gear technology. It solves the problem of precise alignment during installation of planetary gear carriers in existing technologies. This utility model includes a planetary gear carrier body, planetary helical gears, a planetary gear assembly, a central helical gear, a support end cover, and a support outer shell. A mounting body is located on one end face of the outer ring body, and a first mounting hole is formed in the mounting body. A shaft hole is formed in the center of the central support body. The planetary gear assembly includes a front-row planetary gear, a rear-row planetary gear, and a gear connecting rod. One end of the gear connecting rod extends into the first mounting hole. A connecting shaft is integrally formed on the inner side of the central helical gear and passes through a shaft hole. The front-row planetary gears mesh with the central helical gear, and the planetary helical gear is installed on the outside of the rear-row planetary gear and meshes with it. This utility model has the advantages of high installation efficiency, high structural strength, and convenient disassembly.

Description

Technical Field

[0001] This utility model belongs to the field of planetary gear technology and relates to a front and rear planetary gear carrier for a transmission device. Background Technology

[0002] During power transmission, the front planetary gear mechanism usually receives power from the engine or other power sources first. According to the shift logic and the instructions of the control system, it performs preliminary speed and torque conversion on the power. The rear planetary gear mechanism usually receives the processed power from the front and further adjusts and distributes the power to achieve more different transmission ratios.

[0003] Chinese patent publication number CN206958226U discloses a planetary gear carrier, including a front planetary carrier and a rear planetary carrier. A connecting post for connecting to the rear planetary carrier is provided on the front planetary carrier, and a corresponding groove for connecting the connecting post is provided on the rear planetary carrier. Brazing holes are provided on the surface of the grooves. The front planetary carrier and the rear planetary carrier are connected as one piece by sintering and brazing. The front planetary carrier is provided with a transmission spline, which is an external spline. The planetary gear carrier is provided with balancing holes. The balancing holes are either single-sided balancing holes provided on the front planetary carrier or the rear planetary carrier, or double-sided balancing holes provided on both the front planetary carrier and the rear planetary carrier.

[0004] The patent provides a planetary gear carrier in which the front and rear planetary carriers are installed by relying solely on the cooperation of the connecting column and the groove, lacking a clear installation guide structure. This makes it difficult to accurately align the carriers during installation, increasing the difficulty and time cost of installation. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned problems in the prior art by providing a front and rear planetary gear carrier for a transmission device.

[0006] The objective of this utility model can be achieved through the following technical solution: A planetary gear carrier for a transmission device, comprising a planetary gear carrier body, planetary helical gears, a planetary gear assembly, a central helical gear, a support end cap, and a support outer shell. The planetary gear carrier body is integrally formed and includes an outer ring body, a mounting body, a central support body, and spokes. The mounting body is disposed on one end face of the outer ring body. The spokes are a plurality of spokes arranged in a circumferential array on the periphery of the mounting body. The mounting body has a plurality of first mounting holes arranged in a circumferential array and spaced apart from the spokes. The central support body is disposed in the middle section of the inner side of the spokes. The central support body has a shaft hole in its center. The planetary gear assembly includes a front-row planetary gear, a rear-row planetary gear, and a gear connecting rod. One end of the gear connecting rod extends into the first mounting hole. A connecting shaft is integrally formed on the inner side of the central helical gear. The connecting shaft passes through the shaft hole. The front-row planetary gear meshes with the central helical gear. The planetary helical gear is mounted on the outside of the rear-row planetary gear and meshes with it.

[0007] In the aforementioned planetary gear carrier for a transmission device, the inner side of the bracket end cover is provided with several connecting grooves, one end of the spoke extends into the connecting groove, and the bracket end cover is fixedly connected to the spoke.

[0008] In the aforementioned planetary gear carrier for a transmission device, a plurality of second mounting holes are provided in the end cover of the bracket, and the other end of the gear connecting rod extends into the second mounting holes.

[0009] In the aforementioned planetary gear carrier for a transmission device, a connecting ring is formed on one side of the planetary helical gear, and the end of the bracket housing is fitted and fixed to the connecting ring.

[0010] In the aforementioned planetary gear carrier for a transmission device, the outer surface of the support housing is provided with several light-reducing holes, and a support body and a connecting gear are integrally formed on the outer end of the support housing.

[0011] In the aforementioned planetary gear carrier for a transmission device, the central support body has several inner grooves on its outer periphery, and the gear connecting rod passes through the outside of the inner grooves.

[0012] Compared with the prior art, the front and rear planetary gear carriers for a transmission device provided by this utility model have the following advantages: 1. By inserting one end of the gear connecting rod into the first mounting hole of the mounting body and the other end into the second mounting hole of the bracket end cover, a through-type positioning structure is formed, which provides precise axial and radial guidance for the planetary gear assembly. During installation, the related components of the front and rear planetary carriers can be quickly aligned to avoid misalignment and tilting, greatly reducing the assembly difficulty; 2. The main body of the planetary gear carrier adopts an integrated molding process, with the outer ring body, mounting body, central bearing body and spokes forming a complete structure, eliminating the risk of loosening that may exist in traditional multi-part connections, and significantly improving the overall rigidity and deformation resistance; 3. The bracket end cover is fixedly connected to the spokes through the connecting groove, and the bracket outer shell is fitted and fixed to the connecting ring of the planetary helical gear. This modular design makes the installation and disassembly of each component more convenient, and facilitates quick operation when repairing or replacing parts. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the main structure of the planetary gear carrier;

[0016] Figure 4 This is a schematic diagram of the bracket end cap structure.

[0017] In the diagram: 1. Planetary gear carrier body; 11. Outer ring body; 12. Mounting body; 13. Central bearing body; 131. Inner groove; 14. Spoke; 15. First mounting hole; 16. Shaft hole; 2. Planetary helical gear; 21. Connecting ring; 3. Planetary gear assembly; 31. Front row planetary gear; 32. Rear row planetary gear; 33. Gear connecting rod; 4. Central helical gear; 41. Connecting shaft; 5. Bracket end cover; 51. Connecting groove; 52. Second mounting hole; 6. Bracket outer shell; 61. Lightening hole; 62. Support body; 63. Connecting gear. Detailed Implementation

[0018] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0019] like Figures 1 to 4As shown, this embodiment includes a planetary gear carrier body 1, a planetary helical gear 2, a planetary gear assembly 3, a central helical gear 4, a support end cap 5, and a support outer shell 6. The planetary gear carrier body 1 is integrally formed and consists of an outer ring body 11, a mounting body 12, a central support body 13, and spokes 14. The mounting body 12 is located on the inner end face of the outer ring body 11. Several spokes 14 are arranged in a circumferential array on the outer periphery of the mounting body 12. Several first mounting holes 15 are arranged in a circumferential array and spaced apart from the spokes 14 in the mounting body 12. The central support body 13 is located in the middle section of the inner side of the spokes 14. A shaft hole 16 is opened in the center of the central support body 13. A connecting shaft 41 is integrally formed on the inner side of the central helical gear 4. The connecting shaft 41 passes through the shaft hole 16 to connect the central helical gear 4 with the central helical gear 4. The carrier 13 is connected to the planetary gear assembly 3, which includes a front planetary gear 31, a rear planetary gear 32, and a gear connecting rod 33. One end of the gear connecting rod 33 extends into the first mounting hole 15. The front planetary gear 31 meshes with the central helical gear 4. The planetary helical gear 2 is installed on the outside of the rear planetary gear 32 and meshes with it to realize power transmission and speed change functions. Several connecting grooves 51 are opened on the inner side of the bracket end cover 5. One end of the spoke 14 extends into the connecting groove 51. The bracket end cover 5 and the spoke 14 are fixedly connected by bolts to ensure the connection is stable. Several second mounting holes 52 are opened in the bracket end cover 5. The other end of the gear connecting rod 33 extends into the second mounting hole 52 to limit the gear connecting rod 33 and improve the assembly accuracy of the assembly.

[0020] To elaborate further, such as Figures 1 to 2 As shown, a connecting ring 21 is formed on one side of the planetary helical gear 2, and the end of the bracket housing 6 is fitted with the connecting ring 21 and fixed by welding, bolt connection or other means to ensure the stable installation of the planetary helical gear 2; the outer surface of the bracket housing 6 is provided with several weight-reducing holes 61 to reduce the overall weight while ensuring structural strength; the outer end of the bracket housing 6 is integrally formed with a support body 62 and a connecting gear 63 to facilitate the adaptation and connection with other components of the transmission device.

[0021] To elaborate further, such as Figure 3 As shown, the central support body 13 has several inner grooves 131 on its outer periphery. The gear connecting rod 33 passes through the outside of the inner grooves 131, providing space for the movement of the gear connecting rod 33. At the same time, it optimizes the structure of the central support body 13, avoids interference, and ensures smooth gear transmission.

[0022] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0023] Although this document uses a variety of terms, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this invention; interpreting them as any additional limitation would contradict the spirit of this invention.

Claims

1. A front and rear planetary gear carrier for a transmission device, comprising a planetary gear carrier body (1), planetary helical gears (2), planetary gear assemblies (3), a central helical gear (4), a support end cap (5), and a support housing (6), characterized in that: The planetary gear carrier body (1) is integrally formed and includes an outer ring body (11), a mounting body (12), a central support body (13), and spokes (14). The mounting body (12) is located on one end face of the outer ring body (11). The spokes (14) are numerous and arranged in a circular array around the outer periphery of the mounting body (12). The mounting body (12) has several first mounting holes (15) arranged in a circular array and spaced apart from the spokes (14). The central support body (13) is located in the middle section of the inner side of the spokes (14). The central support body (13) has a central opening. The planetary gear assembly (3) includes a front planetary gear (31), a rear planetary gear (32), and a gear connecting rod (33), with one end of the gear connecting rod (33) extending into the first mounting hole (15). A connecting shaft (41) is integrally formed on the inner side of the central helical gear (4). The connecting shaft (41) passes through the shaft hole (16). The front planetary gear (31) meshes with the central helical gear (4). The planetary helical gear (2) is mounted on the outside of the rear planetary gear (32) and meshes with it.

2. The front and rear planetary gear carriers for a transmission device according to claim 1, characterized in that: The bracket end cap (5) has several connecting grooves (51) on its inner side. One end of the spoke (14) extends into the connecting groove (51) and the bracket end cap (5) is fixedly connected to the spoke (14).

3. The front and rear planetary gear carriers for a transmission device according to claim 1, characterized in that: The bracket end cap (5) has several second mounting holes (52), and the other end of the gear connecting rod (33) extends into the second mounting holes (52).

4. The front and rear planetary gear carriers for a transmission device according to claim 1, characterized in that: A connecting ring (21) is formed on one side of the planetary helical gear (2), and the end of the bracket housing (6) is fitted and fixed to the connecting ring (21).

5. The front and rear planetary gear carriers for a transmission device according to claim 1, characterized in that: The outer surface of the bracket housing (6) is provided with several light-reducing holes (61), and a support body (62) and a connecting gear (63) are integrally formed on the outer end of the bracket housing (6).

6. The front and rear planetary gear carriers for a transmission device according to claim 1, characterized in that: The central support body (13) has several inner grooves (131) on its outer periphery, and the gear connecting rod (33) passes through the outside of the inner grooves (131).

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