CN217108042U

CN217108042U - Split type semi-axis sun gear structure

Info

Publication number: CN217108042U
Application number: CN202220698072.8U
Authority: CN
Inventors: 常方坡; 刘海林; 仇静; 黄飞
Original assignee: Anhui Heli Co Ltd
Current assignee: Anhui Heli Co Ltd
Priority date: 2022-03-28
Filing date: 2022-03-28
Publication date: 2022-08-02
Anticipated expiration: 2032-03-28

Abstract

The utility model discloses a split type semi-axis sun gear structure, include the semi-axis and install the sun gear at the semi-axis both ends, the cover is equipped with the planet carrier assembly on the sun gear, planet wheel and sun gear meshing on the planet carrier assembly, the semi-axis passes through the spline with the sun gear and matches the installation and realize the components of a whole that can function independently. According to the split type half shaft sun gear structure, the half shaft and the sun gear are mounted in a split manner, the half shaft can be directly processed by using bar materials, the sun gear can be processed by using a forged piece, and the utilization rate of materials is effectively improved; the integral sun gear and the half shaft cannot grind the gear of the sun gear, the split sun gear can grind, the precision of the gear can be improved, and the noise of gear meshing transmission is further reduced; the sun gear is connected with the half shaft spline, a certain gap exists, and the load-sharing coefficient in the meshing process of the sun gear and the planet gear in the planet carrier assembly can be reduced.

Description

Split type semi-axis sun gear structure

Technical Field

The application relates to the technical field of half-shaft sun gears, in particular to a split type half-shaft sun gear structure.

Background

At present, a sun gear and a half axle gear of a drive axle with a wheel edge reduction are mostly integrated, the machining precision of the integrated gear is not easy to guarantee, the precision of a single planet gear and the gear is easy to guarantee for a wheel edge planet reduction mechanism, but if the precision of the sun gear is not guaranteed, the whole wheel edge reduction is easy to generate noise in the working process, meanwhile, the structural size of the sun gear is greatly different from the size of the half axle, the machining allowance of raw materials in the machining process is also relatively large, and unnecessary waste is caused.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned shortcomings of the prior art, it is an object of the present patent application to provide a split half-shaft sun gear structure that solves the above-mentioned problems of the prior art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a split type semi-axis sun gear structure, includes the semi-axis and installs the sun gear at the semi-axis both ends, and the cover is equipped with the planet carrier assembly on the sun gear, and the planet wheel on the planet carrier assembly meshes with the sun gear, the semi-axis passes through the spline with the sun gear and matches the installation and realize the components of a whole that can function independently.

Furthermore, the outer side walls at the two ends of the half shaft are circumferentially provided with external splines, the inner side wall of the sun gear is circumferentially provided with internal splines which are matched and meshed with the external splines, and the half shaft is provided with a limiting device used for limiting the axial movement of the sun gear.

Furthermore, the limiting device comprises an annular groove which is formed in the side wall of one end, away from the two external splines, of the half shaft, and a shaft retainer ring for limiting the sun gear is sleeved in the annular groove.

Furthermore, threaded holes are formed in the middle of the side walls at the two ends of the half shaft.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the half shaft and the sun gear are installed in a split mode, the half shaft can be directly processed by using bar materials, the sun gear can be processed by using a forged piece, and the utilization rate of materials is effectively improved;

2. the integral sun gear and the half shaft cannot grind the gear of the sun gear, the split sun gear can grind, the precision of the gear can be improved, and the noise of gear meshing transmission is further reduced;

3. the sun gear is connected with the half shaft spline, a certain gap exists, and the load-sharing coefficient in the meshing process of the sun gear and the planet gear in the planet carrier assembly can be reduced.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic view of the local internal view structure of the present invention;

FIG. 3 is a schematic view of the assembly structure of the half shaft and the sun gear of the present invention;

FIG. 4 is a schematic view of the half-axle structure of the present invention;

FIG. 5 is a schematic view of the sun gear of the present invention;

fig. 6 is a schematic view of the structure of the shaft retainer ring of the present invention.

The reference numbers illustrate: the axle comprises a half shaft 1, an external spline 11, a threaded hole 12, a sun gear 2, an internal spline 21, a planet carrier assembly 3 and a shaft retainer ring 4.

Detailed Description

The following description of the embodiments of the present application is provided by way of specific examples, and other advantages and effects of the present application will be readily apparent to those skilled in the art from the disclosure herein. The present application is capable of other and different embodiments and its several details are capable of modifications and variations in various respects, all without departing from the spirit of the present application. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

Referring to fig. 1-6, the present invention provides a technical solution:

a split type half shaft sun gear structure is shown in figures 1 and 2 and comprises a half shaft 1, a sun gear 2 and a planet carrier assembly 3, as shown in figure 4, external splines 11 are machined on the outer side walls of two ends of the half shaft 1 in the circumferential direction, as shown in figure 5, internal splines 21 which are matched and meshed with the external splines 11 are arranged on the inner side wall of the sun gear 2 in the circumferential direction, as shown in figure 3, the half shaft 1 and the sun gear 2 are installed in a split mode through the external splines 11 and the internal splines 21 in a matching mode, the half shaft 1 and the sun gear 2 are installed in a split mode, the half shaft 1 can be directly machined by using bars, the sun gear 2 can be used by using forgings, and the utilization rate of materials is effectively improved; the integral sun gear and the half shaft cannot grind the gear of the sun gear, the split sun gear 2 can grind, the precision of the gear can be improved, and the noise of gear meshing transmission is further reduced; planet gear and sun gear 2 meshing on the planet carrier assembly 3,

sun gear

2 and 1 splined connection of semi-axis have certain clearance to exist, can reduce the equal load coefficient that appears in planet gear meshing process in sun gear 2 and the planet carrier assembly 3. And a limiting device for limiting the axial movement of the sun wheel 2 is arranged on the half shaft 1. As shown in fig. 4, the threaded holes 12 are formed in the middle of the side walls at the two ends of the half shaft 1, so that the half shaft 1 can be conveniently disassembled and assembled, when the half shaft or the sun gear needs to be disassembled and assembled, a bolt or a disassembling tool with an external thread is installed in the threaded hole 12, the half shaft 1 or the sun gear 2 is disassembled and replaced, the planet carrier assembly 3 does not need to be disassembled, and the operation is simple.

As shown in fig. 2, the limiting device includes an annular groove formed in the half shaft 1 and located on the side wall of one end of each of the two external splines 11, a shaft retainer ring 4 for limiting the sun gear 2 is sleeved in the annular groove, the structure of the shaft retainer ring 4 is shown in fig. 6, as shown in fig. 2, one end of the sun gear 2 is controlled by axial displacement at the effective stroke of the external splines 11, and the other end of the sun gear 2 is limited by the shaft retainer ring 4.

During operation, power is transmitted to the half shaft 1, the half shaft 1 is transmitted to the sun gear 2 connected with the half shaft, the sun gear 2 transmits the power to the planet gear in the planet carrier assembly 3, and finally, power output is achieved through the planet carrier in the planet carrier assembly 3.

The above-described embodiments are merely illustrative of the principles and utilities of the present patent application and are not intended to limit the present patent application. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of this patent application. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical concepts disclosed in the present application shall be covered by the claims of the present application.

Claims

1. The utility model provides a split type semi-axis sun gear structure which characterized in that: including semi-axis (1) and install sun gear (2) at semi-axis (1) both ends, the cover is equipped with planet carrier assembly (3) on sun gear (2), and the planet wheel on planet carrier assembly (3) meshes with sun gear (2), semi-axis (1) and sun gear (2) are through spline matching installation realization components of a whole that can function independently.

2. The split half-shaft sun gear structure according to claim 1, wherein: the outer side wall circumference at semi-axis (1) both ends is equipped with external splines (11), and the inside wall circumference of sun gear (2) is equipped with and matches internal spline (21) of meshing with external splines (11), installs the stop device who is used for restricting sun gear (2) axial displacement on semi-axis (1).

3. The split half-shaft sun gear structure according to claim 2, wherein: the limiting device comprises an annular groove which is formed in the side wall of one end, located on the two external splines (11) and far away from the half shaft (1), and a shaft check ring (4) for limiting the sun gear (2) is sleeved in the annular groove.

4. The split half-shaft sun gear structure according to claim 1, wherein: threaded holes (12) are formed in the middle of the side walls at the two ends of the half shaft (1).