CN212499738U

CN212499738U - Wheel reduction axle semi-axis guide structure and wheel reduction drive axle assembly

Info

Publication number: CN212499738U
Application number: CN202020724322.1U
Authority: CN
Inventors: 赵洋; 朱兴龙; 冯涛; 张国卫
Original assignee: FAW Jiefang Automotive Co Ltd
Current assignee: FAW Jiefang Automotive Co Ltd
Priority date: 2020-05-06
Filing date: 2020-05-06
Publication date: 2021-02-09
Anticipated expiration: 2030-05-06

Abstract

The utility model relates to a wheel reduction axle semi-axis guide structure and wheel reduction drive axle assembly, including bearing assembly, axle housing, snap ring and semi-axis and sun gear assembly, the internal diameter of axle housing tip be the shoulder hole, bearing assembly install in the shoulder hole of axle housing, bearing assembly cover is put on the axle diameter of the semi-axis of semi-axis and sun gear assembly, the semi-axis and sun gear assembly in the cylindrical tooth of sun gear mesh with the cylindrical tooth of five planet gears of drive axle assembly; a steel wire check ring is sleeved on the half shaft between the sun gear and the needle roller bearing set and abuts against the end faces of the sun gear and the needle roller bearing set, a spline shaft of the half shaft and a spline hole of the half shaft gear in the half shaft and the sun gear assembly are connected, the snap ring is arranged in a rectangular ring groove of the half shaft, and the end faces are attached to and limited by the end face of the sun gear. The tooth-shaped contact deviation between the sun wheel and the planet wheel is reduced, so that abnormal abrasion is reduced, noise is reduced, and the service life is prolonged.

Description

Wheel reduction axle semi-axis guide structure and wheel reduction drive axle assembly

Technical Field

The utility model belongs to car axle field, concretely relates to wheel reduction axle semi-axis guide structure for wheel reduction drive axle assembly.

Background

In the automobile hub reduction drive axle, a sun gear of a hub reduction gear is connected with a half shaft by a spline, and the half shaft is in a floating state in the radial direction, so that the sun gear is not positioned in the radial direction and is limited in the radial direction by means of tooth-shaped contact of the sun gear and five planet gears. In the running process of an automobile, the sun gear vibrates in the radial direction, so that the tooth form contact of the sun gear and the planet gear generates larger deviation, the abnormal abrasion of a planetary gear train of the hub reduction gear is caused, the noise is increased, and the service life is shortened.

Disclosure of Invention

The wheel-side speed reduction drive axle aims to solve the problem that radial vibration is generated when a sun gear rotates due to the fact that the sun gear of a wheel-side speed reducer is lack of radial positioning in the existing wheel-side speed reduction drive axle; the problems of abnormal abrasion, noise increase, service life reduction and the like of a planetary gear train of the hub reduction gear are caused by the increase of tooth form contact deviation of the sun gear and the planetary gear, and the reliability of the planetary gear train is improved by providing the hub reduction axle half shaft guide structure and the hub reduction drive axle assembly.

The purpose of the utility model is realized through the following technical scheme:

a wheel reduction axle half shaft guide structure comprises a needle bearing set 2, an axle housing 1, a snap ring 7, a half shaft and a sun gear assembly 3, wherein the inner diameter of the end part of the axle housing 1 is a stepped hole, the needle bearing set 2 is installed in the stepped hole of the axle housing, the needle bearing set 2 is sleeved on the shaft diameter of the half shaft 4 of the half shaft and the sun gear assembly 3, and cylindrical teeth of a sun gear 6 in the half shaft and the sun gear assembly 3 are meshed with cylindrical teeth of five planetary gears 8 of a drive axle assembly; a steel wire check ring 5 is sleeved on the half shaft between the sun gear 6 and the needle roller bearing group 2, the steel wire check ring 5 is abutted against the end faces of the sun gear 6 and the needle roller bearing group 2, the spline shaft of the half shaft 4 in the half shaft and sun gear assembly 3 is connected with the spline hole of the half shaft gear, the snap ring 7 is arranged in the rectangular ring groove of the half shaft 4, and the end face is attached to and limited by the end face of the sun gear 6.

As a more excellent technical scheme of the utility model, sun gear 6 and bearing group 2 between the semi-axis on seted up the annular groove, steel wire retaining ring 5 install in the annular groove.

Another object of the utility model is to provide an use above-mentioned wheel limit reduction bridge semi-axis guide structure's a wheel limit reduction drive axle assembly.

The beneficial effects are as follows:

the utility model discloses an increase the diameter of axle structure on the semi-axis, increase the shoulder hole structure on the axle housing to increase bearing group between semi-axis and axle housing, be used for the radial positioning between semi-axis and the axle housing, reduced the profile of tooth contact deviation between sun gear and the planet wheel, thereby reduce unusual wearing and tearing, the noise abatement promotes life.

Drawings

FIG. 1 is a cross-sectional view of a wheel reduction assembly using the axle shaft guiding structure of a wheel reduction axle according to the present invention;

fig. 2 is a wheel reduction bridge semi-axis guide structure's semi-axis and sun gear assembly cross-sectional view.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1 and 2, the utility model provides a wheel reduction axle semi-axis guide structure, including bearing group 2, axle housing 1, snap ring 7 and semi-axis and sun gear assembly 3, the internal diameter of 1 tip of axle housing be the shoulder hole, bearing group 2 install in the shoulder hole of axle housing, bearing group 2 cover is put on the axle diameter of semi-axis 4 of semi-axis and sun gear assembly 3, semi-axis and sun gear assembly 3 in the roller tooth of sun gear 6 with the roller tooth meshing of five planet wheels 8 of drive axle assembly; a steel wire check ring 5 is sleeved on the half shaft between the sun gear 6 and the needle roller bearing group 2, the steel wire check ring 5 is abutted against the end faces of the sun gear 6 and the needle roller bearing group 2, the spline shaft of the half shaft 4 in the half shaft and sun gear assembly 3 is connected with the spline hole of the half shaft gear, the snap ring 7 is arranged in the rectangular ring groove of the half shaft 4, and the end face is attached to and limited by the end face of the sun gear 6.

In some embodiments, an annular groove is formed on the half shaft between the sun gear 6 and the needle roller bearing set 2, and the wire retainer ring 5 is installed in the annular groove.

The utility model also provides a wheel reduction drive axle assembly applying the wheel reduction axle semi-axis guide structure, the shaft diameter of the needle bearing group 2 is arranged in the stepped hole of the axle housing 1; the shaft diameter of the half shaft and sun gear assembly 3 is matched with the round hole of the needle roller bearing group 2; the cylindrical teeth of the sun gear 6 in the half shaft and sun gear assembly 3 are meshed with the cylindrical teeth of the five planet gears 8; the spline shaft of the half shaft 4 in the half shaft and sun gear assembly 3 is connected with the spline hole of the half shaft gear. The half shaft and sun gear assembly 3 and the steel wire retainer ring 5 are arranged in the semicircular ring groove of the half shaft 4; the spline hole of the sun gear 6 is arranged in the spline shaft of the half shaft 4, and the end surface is attached to the steel wire retainer ring 5 for limiting; the snap ring 7 is arranged in the rectangular ring groove of the half shaft 4, and the end surface is attached to the end surface of the sun gear 6 for limiting.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

The above description of the present invention does not limit the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The utility model provides a wheel limit reduction bridge semi-axis guide structure which characterized in that: the roller pin bearing assembly comprises a roller pin bearing set (2), an axle housing (1), a clamping ring (7), a half shaft and sun gear assembly (3), wherein the inner diameter of the end part of the axle housing (1) is a stepped hole, the roller pin bearing set (2) is installed in the stepped hole of the axle housing, the roller pin bearing set (2) is sleeved on the shaft diameter of the half shaft (4) of the half shaft and sun gear assembly (3), and cylindrical teeth of a sun gear (6) in the half shaft and sun gear assembly (3) are meshed with cylindrical teeth of five planetary gears (8) of a drive axle assembly; a steel wire check ring (5) is sleeved on the half shaft between the sun gear (6) and the needle roller bearing group (2), the steel wire check ring (5) is abutted against the end faces of the sun gear (6) and the needle roller bearing group (2), the spline shaft of the half shaft (4) is connected with the spline hole of the half shaft gear in the half shaft and sun gear assembly (3), the snap ring (7) is arranged in the rectangular ring groove of the half shaft (4), and the end face is attached to the end face of the sun gear (6) in a limiting mode.

2. The axle shaft guide structure of the hub reduction axle according to claim 1, wherein: an annular groove is formed in the half shaft between the sun gear (6) and the needle roller bearing set (2).

3. The axle shaft guide structure of the hub reduction axle according to claim 1, wherein: and the steel wire retainer ring (5) is arranged in the annular groove.

4. The utility model provides a wheel limit reduction transaxle assembly which characterized in that: the wheel reduction axle half shaft guide structure of claim 1 is applied.