阅读说明：本技术 一种轮边支撑轴 (Wheel rim support shaft ) 是由 刘斌 于 2019-09-10 设计创作，主要内容包括：本发明提供一种轮边支撑轴,由法兰盘、凸台、第一盲孔、螺纹孔、第一轴头、第一轴肩、第二轴头、第二轴肩、凹槽、花键、第二盲孔构成；沿轴心依次为凸台、法兰盘、第一轴头、第一轴肩、第二轴头、第二轴肩、花键、第二盲孔；第一盲孔用于配合轴承的安装；螺纹孔为8个,对称设置,用于法兰盘的连接；第一轴头、第一轴肩、第二轴头、第二轴肩沿外表面圆周各设置一个凹槽,环形面与轴心夹角60度；轮边支撑轴整体由球磨铸铁制作,外表面电镀耐磨合金钢。本发明提供的轮边支撑轴,解决目前轮边支撑轴用于新能源轿车强度、耐磨、抗震方面的不足。(The invention provides a wheel-side support shaft which comprises a flange plate, a boss, a first blind hole, a threaded hole, a first shaft head, a first shaft shoulder, a second shaft head, a second shaft shoulder, a groove, a spline and a second blind hole, wherein the flange plate is fixedly connected with the boss; the shaft center is sequentially provided with a boss, a flange plate, a first shaft head, a first shaft shoulder, a second shaft head, a second shaft shoulder, a spline and a second blind hole; the first blind hole is used for being matched with a bearing to be installed; the number of the threaded holes is 8, the threaded holes are symmetrically arranged and are used for connecting the flange plates; the first shaft head, the first shaft shoulder, the second shaft head and the second shaft shoulder are respectively provided with a groove along the circumference of the outer surface, and the included angle between the annular surface and the shaft center is 60 degrees; the wheel edge support shaft is integrally made of ball-milling cast iron, and the outer surface of the wheel edge support shaft is electroplated with wear-resistant alloy steel. The wheel edge support shaft provided by the invention solves the defects of strength, wear resistance and shock resistance of the existing wheel edge support shaft used for a new energy sedan.)

1. The utility model provides a wheel limit back shaft comprises ring flange (1), boss (2), first blind hole (3), screw hole (4), first spindle nose (5), first shaft shoulder (6), second shaft head (7), second shaft shoulder (8), recess (9), spline (10), second blind hole (11), its characterized in that: first spindle nose (2), ring flange (1), first spindle nose (5), first shaft shoulder (6), second spindle nose (7), second shaft shoulder (8), spline (10), second blind hole (11) connect gradually along the axle center, boss (2) terminal surface edge chamfer, first blind hole (3) are used for the installation of cooperation axle, screw hole (4) are 8, and the symmetry sets up.

2. a wheel rim support shaft as defined in claim 1, wherein: the first shaft head (5), the first shaft shoulder (6), the second shaft head (7) and the second shaft shoulder (8) are respectively provided with a groove (9) along the circumference of the outer surface, the grooves (9) are annular, and the included angle between the annular surface and the shaft center is 60 degrees.

3. A wheel rim support shaft as defined in claim 1, wherein: and circular arc chamfers are arranged among the flange plate (1), the first shaft head (5), the first shaft shoulder (6), the second shaft head (7) and the second shaft shoulder (8).

4. A wheel rim support shaft as defined in claim 1, wherein: the wheel edge support shaft is integrally quenched, and the thickness of a hardened layer at the arc chamfer is 8-10 mm.

5. the wheel rim support shaft according to claim 1, wherein: the wheel edge supporting shaft is integrally made of nodular cast iron, and wear-resistant alloy steel is electroplated on the outer surface of the wheel edge supporting shaft.

Technical Field

The invention belongs to the technical field of bearings, and particularly relates to a wheel rim supporting shaft.

Background

The wheel-side supporting shaft is mainly used for wheel-side supporting at two ends of a vehicle driving axle, is welded at two ends of an axle housing and is used for connecting the axle housing of the driving axle and an inner gear ring, and a half shaft penetrates through the middle of an axle tube. When the part is in a working state, the part not only bears the self weight of a vehicle, but also bears the impact force and the counter impact force brought by a road surface in the driving process, so that the part has higher requirements on mechanical properties, especially has enough rigidity, wear resistance and shock resistance, and is a kind of safety protection part on the vehicle.

At present, a new energy car is developed rapidly, but the problem of large self weight of the car is caused by the fact that an energy storage unit is too heavy, and new difficulties are brought to the strength, wear resistance and anti-seismic performance of a wheel-side supporting shaft. The invention patent with the granted publication number of CN 102501000B, namely the precision forming process of the engineering machinery and the wheel-side supporting shaft of the load-carrying vehicle, discloses that the fatigue resistance of the product is greatly improved by the all-fiber metal flow line distributed along the axial direction. However, the breakage of the wheel edge supporting shaft is usually caused by stress concentration at a chamfer angle between the shaft head and the flange, and the chamfer angle can not be distributed with full-fiber metal streamlines by adopting the technical scheme of the invention, so that the problem of fatigue breakage can not be fundamentally solved.

Disclosure of Invention

The invention mainly aims to provide a wheel edge supporting shaft, and overcomes the defects of strength, wear resistance and shock resistance of the existing wheel edge supporting shaft for a new energy sedan.

In order to achieve the technical effects, the invention adopts the following technical scheme:

A wheel rim support shaft is composed of a flange plate, a boss, a first blind hole, a threaded hole, a first shaft head, a first shaft shoulder, a second shaft head, a second shaft shoulder, a groove, a spline and a second blind hole; the shaft center is sequentially provided with a boss, a flange plate, a first shaft head, a first shaft shoulder, a second shaft head, a second shaft shoulder, a spline and a second blind hole; the edge of the end face of the boss is chamfered, so that the assembly is convenient; the first blind hole is used for mounting the matching shaft; the number of the threaded holes is 8, the threaded holes are symmetrically arranged and are used for connecting the flange plates; the first shaft head, the first shaft shoulder, the second shaft head and the second shaft shoulder are respectively provided with a groove along the circumference of the outer surface, and the included angle between the annular surface and the shaft center is 60 degrees; the wheel edge supporting shaft is integrally made of nodular cast iron, and the outer surface of the wheel edge supporting shaft is electroplated with wear-resistant alloy steel.

And circular arc chamfers are arranged among the flange plate, the first shaft head, the first shaft shoulder, the second shaft head and the second shaft shoulder.

The wheel edge support shaft is integrally quenched, and the thickness of a hardening layer at the arc chamfer is 8-10mm so as to ensure the strength at the chamfer.

The invention has the beneficial effects that: (1) the invention has simple structure and is easy to popularize and use.

(2) The first shaft head, the first shaft shoulder, the second shaft head and the second shaft shoulder are respectively provided with a groove along the circumference of the outer surface, and the included angle between the annular surface and the shaft center is 60 degrees, so that lubricating oil can be stored, and the bearing abrasion is reduced.

(3) The wheel limit back shaft is wholly made by nodular cast iron, and wear-resisting alloy steel is electroplated to the surface, can wholly reduce stress concentration, and the antidetonation is effectual, has good wear-resisting effect simultaneously, compares with whole adoption alloy steel, and the processing degree of difficulty reduces, the cost is practiced thrift.

Drawings

FIG. 1 is a front view of a wheel-side support shaft;

FIG. 2 is a left side view of the wheel rim support shaft;

wherein: 1. a flange plate; 2. a boss; 3. a first blind hole; 4. a threaded hole; 5. a first spindle nose; 6. a first shoulder; 7. a second spindle head; 8. a second shoulder; 9. a groove; 10; 6-spline; 11. a second blind hole.

Detailed Description

For further understanding of the present invention, the following embodiments are provided to illustrate the technical solutions of the present invention in detail, and the scope of the present invention is not limited by the following embodiments.