CN219406036U - Half axle sleeve mounting structure for heavy-duty car - Google Patents

Abstract

The utility model discloses a half-shaft sleeve mounting structure for a heavy-duty car, which comprises a half-shaft sleeve and a bridge shell, wherein the improvement is that: an oil seal mounting seat is arranged in the middle of the half-shaft sleeve, and the half-shaft sleeve and the oil seal mounting seat are of an integral structure; the right end of the half axle sleeve is sleeved in the inner hole of the axle housing, and the right end face of the oil seal mounting seat is contacted with the left end face of the axle housing; the box-type oil seal is arranged on the peripheral outer wall of the oil seal mounting seat. The beneficial technical effects of the utility model are as follows: the utility model provides a semi-axis sleeve mounting structure for heavy-duty car, this scheme utilizes the oil blanket mount pad to realize semi-axis sheathed tube spacing, can effectively simplify axle housing structure.

Description

Half axle sleeve mounting structure for heavy-duty car

Technical Field

The utility model relates to a heavy-duty car structure, in particular to a half-shaft sleeve mounting structure for a heavy-duty car.

Background

The axle sleeve is an important part on a heavy-duty car axle, the axle sleeve and the peripheral structure thereof in the prior art are shown in fig. 1, the axle sleeve is sleeved in an inner hole of an axle housing, a limiting step is machined on the inner hole wall of the axle housing, the inner end face of the axle sleeve is in contact with the limiting step, limiting of the axle sleeve is realized, an oil seal seat is sleeved on the axle sleeve, the right end face of the oil seal seat is in contact with the left end face of the axle housing, an inner limiting bearing is sleeved on the axle sleeve, the right end face of the inner limiting bearing is in contact with the left end face of the oil seal seat, the oil seal is arranged on the outer wall of the oil seal seat, and a sealing ring is arranged between the oil seal seat and the axle sleeve.

In the above structure, the half-shaft sleeve and the oil seal seat are two independent components assembled together, so the prior art is designed because the oil seal adopted by the half-shaft sleeve is a conventional TC framework oil seal, the oil seal lip of the oil seal needs to be directly contacted with the outer wall of the oil seal seat, and the oil seal lip and the oil seal seat can relatively move in the use process, so the outer wall of the oil seal seat needs to have high hardness, high wear resistance and high smoothness, the oil seal seat needs to be specially treated in the processing process, the prior art is limited by the processing technology and the processing cost, the oil seal seat is designed into an independent component, and accordingly, the sealing ring is arranged for sealing the gap between the half-shaft sleeve and the oil seal seat; due to the reasons, the parts are more, the structure is complex, the assembly operation is very troublesome, and the production cost is higher; for installation of the axle sleeve, as the outer wall of the axle sleeve has no corresponding structure which can be used as a limiting structure, limiting steps can be processed on the inner wall of the axle housing to limit the axle sleeve, so that the axle housing has a complex structure and high processing cost.

Disclosure of Invention

In order to solve the problems of more parts and complex structure in the background technology, the inventor newly designs a half-shaft sleeve (filed in another way) for a heavy-duty car integrated with an oil seal mounting seat, and the application is based on the half-shaft sleeve mounting structure newly proposed by the half-shaft sleeve, and the mounting structure can solve the problems of complex axle housing structure and higher processing cost, and the specific scheme is as follows: the novel oil seal device comprises a half-shaft sleeve and an axle housing, wherein an oil seal mounting seat is arranged in the middle of the half-shaft sleeve, and the half-shaft sleeve and the oil seal mounting seat are of an integral structure; the right end of the half axle sleeve is sleeved in the inner hole of the axle housing, and the right end face of the oil seal mounting seat is contacted with the left end face of the axle housing; the box-type oil seal is arranged on the peripheral outer wall of the oil seal mounting seat.

With the technical progress, a new box type oil seal appears, compared with traditional TC framework oil seal, the advantages of box type oil seal are obvious, the biggest advantage is that the oil seal lip is located in the structure, the oil seal lip does not need to be contacted with the external structure, in this regard, the inventor considers that since the oil seal lip of box type oil seal is not contacted with the external structure, the oil seal lip of box type oil seal can not generate relative motion with the oil seal seat, the oil seal seat is not required to have high hardness, high wear resistance and high smoothness naturally, the prior process and cost problems are not existed any more, and then, the utility model directly integrates the oil seal mounting seat on the half axle sleeve.

Preferably, the oil seal mounting seat consists of a convex ring, an annular bulge and an oil seal supporting ring; the convex ring is arranged on the outer wall of the middle part of the half-shaft sleeve; the left end face of the convex ring forms a bearing inner ring limiting surface which is used for contacting with the inner ring of the inner limiting bearing; the right end face of the convex ring forms a sleeve limiting surface, the sleeve limiting surface is used for contacting with the end face of the axle housing, and the diameter of the left end face of the convex ring is smaller than the outer diameter of the inner ring; the outer peripheral wall of the convex ring is provided with an annular bulge, the outer end of the annular bulge extends leftwards to form an oil seal supporting ring, and the outer peripheral wall of the oil seal supporting ring is used for installing a box-type oil seal; the axial dimension of the annular bulge is smaller than that of the convex ring; the left end face of the annular bulge is positioned on the right side of the left end face of the convex ring, the right end face of the annular bulge is positioned on the left side of the right end face of the convex ring, and the left end face of the oil seal supporting ring is positioned on the left side of the left end face of the convex ring; the inner diameter of the left end face of the oil seal supporting ring is larger than the outer diameter of the inner ring, the outer diameter of the left end face of the oil seal supporting ring is smaller than the outer diameter of the inner limit bearing, and when the inner limit bearing is installed in place, a gap is reserved between the left end face of the oil seal supporting ring and the inner limit bearing; the half shaft sleeve, the convex ring, the annular bulge and the oil seal supporting ring are of an integral structure.

The beneficial technical effects of the utility model are as follows: the utility model provides a semi-axis sleeve mounting structure for heavy-duty car, this scheme utilizes the oil blanket mount pad to realize semi-axis sheathed tube spacing, can effectively simplify axle housing structure.

Drawings

FIG. 1, prior art schematic;

FIG. 2 is a schematic diagram of a prior art half-shaft sleeve;

FIG. 3 is a schematic view of a half-shaft sleeve used in the present utility model;

FIG. 4 is a schematic cross-sectional view of a half-shaft sleeve used in the present utility model;

fig. 5 and 4 are enlarged partial views of the structures in circles;

FIG. 6 is a schematic structural diagram of the present utility model (the circle-shaped structure shown by the mark A in the figure is a limiting part formed by the axle sleeve and the axle housing at the limiting surface of the sleeve, and the corresponding part on the wall of the axle housing is eliminated from the figure);

the names corresponding to the marks in the figure are respectively: the axle sleeve comprises an axle sleeve body 1, a convex ring 2, a bearing inner ring limiting surface 21, a sleeve limiting surface 22, an annular bulge 23, an oil seal supporting ring 24, an axle housing 3, a limiting step 31, an inner limiting bearing 4, an oil seal seat 5, an oil seal 6, a sealing ring 7, a limiting part A of the axle sleeve body and the axle housing and a box type oil seal B.

Description of the embodiments

The utility model provides a semi-axis sleeve mounting structure for heavy-duty car, includes semi-axis sleeve 1 and axle housing 3, and its improvement lies in: an oil seal mounting seat is arranged in the middle of the half-shaft sleeve 1, and the half-shaft sleeve 1 and the oil seal mounting seat are of an integral structure; the right end of the half-shaft sleeve 1 is sleeved in an inner hole of the axle housing 3, and the right end face of the oil seal mounting seat is contacted with the left end face of the axle housing 3; the box-type oil seal is arranged on the peripheral outer wall of the oil seal mounting seat.

Further, the oil seal mounting seat consists of a convex ring 2, an annular bulge 23 and an oil seal supporting ring 24;

the convex ring 2 is arranged on the outer wall of the middle part of the half-shaft sleeve 1; the left end surface of the convex ring 2 forms a bearing inner ring limiting surface 21, and the bearing inner ring limiting surface 21 is used for contacting with the inner ring of the inner limiting bearing; the right end face of the convex ring 2 forms a sleeve limiting surface 22, the sleeve limiting surface 22 is used for being in contact with the end face of the axle housing, and the diameter of the left end face of the convex ring 2 is smaller than the outer diameter of the inner ring; the circumferential outer wall of the convex ring 2 is provided with an annular bulge 23, the outer end of the annular bulge 23 extends leftwards to form an oil seal supporting ring 24, and the circumferential outer wall of the oil seal supporting ring 24 is used for installing a box-type oil seal; the axial dimension of the annular projection 23 is smaller than the axial dimension of the collar 2; the left end face of the annular bulge 23 is positioned on the right side of the left end face of the convex ring 2, the right end face of the annular bulge 23 is positioned on the left side of the right end face of the convex ring 2, and the left end face of the oil seal supporting ring 24 is positioned on the left side of the left end face of the convex ring 2; the inner diameter of the left end face of the oil seal supporting ring 24 is larger than the outer diameter of the inner ring, the outer diameter of the left end face of the oil seal supporting ring 24 is smaller than the outer diameter of the inner limit bearing, and when the inner limit bearing is installed in place, a space is reserved between the left end face of the oil seal supporting ring 24 and the inner limit bearing; the half shaft sleeve 1, the convex ring 2, the annular bulge 23 and the oil seal supporting ring 24 are of an integral structure.

Claims (2)

1. The utility model provides a semi-axis sleeve mounting structure for heavy-duty car, includes semi-axis sleeve (1) and axle housing (3), its characterized in that: an oil seal mounting seat is arranged in the middle of the half-shaft sleeve (1), and the half-shaft sleeve (1) and the oil seal mounting seat are of an integral structure; the right end of the half-shaft sleeve (1) is sleeved in an inner hole of the axle housing (3), and the right end face of the oil seal mounting seat is contacted with the left end face of the axle housing (3); the box-type oil seal is arranged on the peripheral outer wall of the oil seal mounting seat.

2. The axle sleeve mounting structure for a heavy-duty car as set forth in claim 1, wherein: the oil seal mounting seat consists of a convex ring (2), an annular bulge (23) and an oil seal supporting ring (24);

the convex ring (2) is arranged on the outer wall of the middle part of the half shaft sleeve (1); the left end face of the convex ring (2) forms a bearing inner ring limiting surface (21), and the bearing inner ring limiting surface (21) is used for contacting with the inner ring of the inner limiting bearing; the right end face of the convex ring (2) forms a sleeve limiting surface (22), the sleeve limiting surface (22) is used for being in contact with the end face of the axle housing, and the diameter of the left end face of the convex ring (2) is smaller than the outer diameter of the inner ring; an annular bulge (23) is arranged on the circumferential outer wall of the convex ring (2), the outer end of the annular bulge (23) extends leftwards to form an oil seal supporting ring (24), and the circumferential outer wall of the oil seal supporting ring (24) is used for installing a box-type oil seal; the axial dimension of the annular bulge (23) is smaller than that of the convex ring (2); the left end face of the annular bulge (23) is positioned on the right side of the left end face of the convex ring (2), the right end face of the annular bulge (23) is positioned on the left side of the right end face of the convex ring (2), and the left end face of the oil seal supporting ring (24) is positioned on the left side of the left end face of the convex ring (2); the inner diameter of the left end face of the oil seal supporting ring (24) is larger than the outer diameter of the inner ring, the outer diameter of the left end face of the oil seal supporting ring (24) is smaller than the outer diameter of the inner limit bearing, and when the inner limit bearing is installed in place, a gap is reserved between the left end face of the oil seal supporting ring (24) and the inner limit bearing; the half shaft sleeve (1), the convex ring (2), the annular bulge (23) and the oil seal supporting ring (24) are of an integral structure.