CN219082236U - Rotary seal assembly for a vehicle wheel assembly - Google Patents
Rotary seal assembly for a vehicle wheel assembly Download PDFInfo
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- CN219082236U CN219082236U CN202222739003.XU CN202222739003U CN219082236U CN 219082236 U CN219082236 U CN 219082236U CN 202222739003 U CN202222739003 U CN 202222739003U CN 219082236 U CN219082236 U CN 219082236U
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Abstract
The utility model discloses a rotary sealing component for an automobile wheel assembly. Comprising the following steps: the wheel comprises a wheel body, a speed reducer, a universal joint, an outer shaft sleeve, a rotary sealing shaft and an oil seal, wherein a mounting cavity is formed in the wheel body along the axial direction of the wheel body; the speed reducer is arranged at one end of the installation cavity; the universal joint is arranged at the other end of the mounting cavity; one end of the outer shaft sleeve is positioned at one side of the speed reducer, and the other end of the outer shaft sleeve extends along the other end of the mounting cavity; one end of the rotary sealing shaft is formed into an outer half shaft, the other end of the rotary sealing shaft is formed into an inner half shaft, the inner half shaft is arranged outside the mounting cavity, one end of the outer half shaft is provided with a spline part, the spline part is matched and connected with the speed reducer, the outer half shaft forms an annular sealing part on the outer surface of the part which is demarcated with the inner half shaft, and the surface of the sealing part is provided with a laser cladding layer; an oil jacket is provided over the seal portion to form a sealed cavity between the outer axle sleeve and the outer axle shaft. The rotary sealing assembly has the advantages of good sealing performance, high wear resistance, high corrosion resistance, long service life and the like.
Description
Technical Field
The utility model belongs to the technical field of rotary sealing, and particularly relates to a rotary sealing assembly for an automobile wheel assembly.
Background
Rotary seals are commonly used for sealing between the relative parts of mechanical equipment in mechanical seals, and function to prevent leakage of liquids (mainly the lubricating medium in the closed cavity), solid particles and gases (mainly impurities and gases present in the environment, etc.) from between two mutually abutting joint surfaces, mainly by the cooperation of the seal and the rotating parts. The oil seal fit is a common rotary seal fit and is widely applied to parts such as wheels, axles, transmissions, chassis transfer cases and the like. A portion of a wheel assembly is shown in fig. 1, schematically illustrating a set of oil-tight, rotary seal fits. The outer half shaft penetrates into the half shaft sleeve, the spline end of the outer half shaft penetrates into the sun gear of the wheel-side speed reducer to be matched with the sun gear, the other end of the outer half shaft is connected to the transmission shaft through a universal joint and the inner half shaft, the end of the outer half shaft is exposed to the air, and the inner and outer boundary parts of the half shaft sleeve are sealed by adopting oil seals.
The mechanical seal is generally made of soft to hard materials with good antifriction and lubricating effects, and the oil seal material is generally made of soft materials such as polytetrafluoroethylene, so that the contact surface of the rotating part and the oil seal is required to have the performances of smoothness, wear resistance and corrosion resistance. In the prior art, the surface of the rotary sealing shaft is generally machined by electroplating chromium or grinding after induction quenching to improve the wear resistance and corrosion resistance of the surface. However, the plating layer cannot form metallurgical bonding, the bonding degree with the surface of the rotary sealing shaft is not high, and the plating layer is easy to generate defects such as peeling after being stressed, so that the mechanical properties of parts can be greatly influenced due to the hydrogen embrittlement problem in the electroplating process along with the popularization of heavy weight and light weight of vehicles, and in addition, waste water and heavy metal ions can be generated in the electroplating process, so that the environment is polluted.
For induction quenching on the surface of the rotary sealing shaft, the surface after induction quenching is made of an original metal material, so that corrosion is not resistant, and particularly, when the rust-proof painted surface of a part exposed in the air is damaged and falls off in the environment of damp-heat coastal and off-road use, the induction quenching reinforcing layer is easy to rust, so that the oil seal is worn to influence the tightness. In addition, no conventional surface strengthening method is capable of maintaining the surface of the rotary seal shaft, regardless of the chromium plating or the induction hardening, and when the wear-resistant surface of the rotary seal shaft is worn, the whole part must be replaced.
Therefore, the rotary sealing assembly with high wear resistance, high corrosion resistance, long service life and good sealing performance is developed, the use requirements of products on high speed, heavy load, adaptation to wet and hot coastal and off-road and other erodible environments can be met, and the rotary sealing assembly is a problem to be solved by the technicians in the field.
Disclosure of Invention
The present utility model aims to solve at least one of the technical problems existing in the prior art.
In view of the foregoing, the present utility model provides a rotary seal assembly for an automotive wheel assembly. The wheel body is equipped with the installation cavity along its axial, the one end in the installation cavity is established to the reduction gear, the universal joint is established at the other end in installation cavity, outer axle sleeve establishes at the installation cavity, outer axle sleeve's one end is located one side of reduction gear, outer axle sleeve's the other end extends along the other end in installation cavity, rotary seal axle's one end forms the outer semi-axis, the other end forms interior semi-axis, interior semi-axis is established in the outside of installation cavity, the one end of outer semi-axis is equipped with spline portion, and make spline portion link to each other with the reduction gear cooperation, the other end of outer semi-axis cooperatees and links to each other with interior semi-axis, the outer semi-axis forms annular sealing portion in the surface with interior semi-axis demarcation part, the surface of sealing portion is equipped with laser cladding layer, the oil blanket forms the ring, the oil jacket is established at sealing portion so that between outer axle sleeve and the outer semi-axis forms sealed cavity.
According to the rotary sealing component for the automobile wheel assembly, the structure that the laser cladding layer is arranged at the sealing part of the outer half shaft is adopted, and the cladding layer has high wear resistance and corrosion resistance, so that the sealing performance between the oil seal and the outer half shaft is improved, the laser cladding layer can be maintained after being worn, and the rotary sealing component has the advantages of good sealing performance, long service life and the like, and can meet the use requirements of products in high-speed, heavy load, adaptation to wet and hot coastal and off-road and other erodible environments.
Embodiments according to the present utility model may also have the following additional technical features:
according to one embodiment of the utility model, the thickness of the laser cladding layer is not less than 0.5mm, the surface hardness of the laser cladding layer is not less than 560HV, and the surface roughness of the laser cladding layer is Ra0.3-Ra0.5um.
According to one embodiment of the utility model, the thickness of the laser cladding layer is 0.5 mm-2 mm, the surface hardness of the laser cladding layer is 560 HV-650 HV, and the surface roughness of the laser cladding layer is Ra0.4um.
According to one embodiment of the utility model, the bonding tensile strength of the laser cladding layer and the sealing part is more than 500Mpa.
According to one embodiment of the utility model, the salt spray corrosion resistance time of the laser cladding layer in the sodium chloride solution with the mass fraction of 3.5% can reach more than 500 hours.
According to one embodiment of the utility model, the oil seal is a polytetrafluoroethylene piece, the rotary seal shaft is a steel piece, and the laser cladding layer is a high-entropy alloy layer composed of elements Fe, ni, cr, co, mn.
According to one embodiment of the utility model, the rotary seal shaft is a titanium alloy piece and the laser cladding is a high entropy alloy layer composed of elements Fe, ni, cr, co, ti.
According to one embodiment of the utility model, the rotary seal shaft is an aluminum alloy piece and the laser cladding layer is a high-entropy alloy layer composed of elements Fe, ni, cr, co, al.
According to one embodiment of the utility model, the laser cladding layer is a nanocrystalline high-entropy alloy layer.
According to one embodiment of the utility model, the width of the laser cladding layer is greater than the width of the oil seal.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is a cross-sectional view of an axle according to an embodiment of the present utility model;
FIG. 2 is a schematic partial cross-sectional view of a rotary seal assembly according to an embodiment of the present utility model;
FIG. 3 is a perspective view of an outer axle shaft according to an embodiment of the present utility model;
FIG. 4 is a schematic partial cross-sectional view of a rotary seal assembly according to an embodiment of the present utility model;
FIG. 5 is a schematic partial cross-sectional view of a rotary seal assembly according to one embodiment of the utility model.
Reference numerals:
a rotary seal assembly 100;
a wheel body 10; a mounting cavity 11;
a decelerator 20;
a universal joint 30;
an outer shaft sleeve 40;
rotating the seal shaft 50; an outer half shaft 51; a spline portion 511; an inner half shaft 52; a laser cladding layer 53;
an oil seal 60;
and a seal ring 70.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1 to 5, a rotary seal assembly 100 for a wheel assembly of an automobile according to an embodiment of the present utility model will be described in detail with reference to the accompanying drawings, using a combined structure of a wheel body 10, a decelerator 20, a universal joint 30, an outer shaft sleeve 40, a rotary seal shaft 50 and an oil seal 60.
Specifically, as shown in fig. 1 to 3, the wheel body 10 is provided with a mounting chamber 11 in its axial direction, the speed reducer 20 is provided at one end of the mounting chamber 11, the universal joint 30 is provided at the other end of the mounting chamber 11, the outer sleeve 40 is provided in the mounting chamber 11, one end of the outer sleeve 40 is located at one side of the speed reducer 20, the other end of the outer sleeve 40 extends along the other end of the mounting chamber 11, one end of the rotary seal shaft 50 is formed into an outer half shaft 51, the other end is formed into an inner half shaft 52, the inner half shaft 52 is provided outside the mounting chamber 11, one end of the outer half shaft 51 is provided with a spline portion 511, and the spline portion 511 is engaged with the speed reducer 20, the other end of the outer half shaft 51 is engaged with the universal joint 30 and is connected with the inner half shaft 52, the outer half shaft 51 forms an annular seal portion at the outer surface of the portion that is demarcated with the inner half shaft 52, the surface of the seal portion is provided with a laser cladding 53, the oil seal 60 is formed into an annular piece, and the oil seal 60 is sleeved at the seal portion so as to form a sealed cavity between the outer sleeve 40 and the outer half shaft 51.
In other words, the wheel body 10 may be provided with the installation cavity 11 in its axial direction, the speed reducer 20 and the universal joint 30 may be provided at both ends of the installation cavity 11, the outer axle sleeve 40 may be provided in the installation cavity 11, the outer wall surface of the outer axle sleeve 40 may be fastened and fixed to the inner wall surface of the installation cavity 11, one end of the outer axle sleeve 40 may be connected to the speed reducer 20, the rotary seal shaft 50 may be divided into two sections of the outer axle shaft 51 and the inner axle shaft 52, the outer axle shaft 51 may be provided in the installation cavity 11, the inner axle shaft 52 may extend out of the installation cavity 11, one end of the outer axle shaft 51 facing the speed reducer 20 may be provided with the spline portion 511 and may be fixedly connected to the speed reducer 20 through the spline portion 511, a portion of the outer axle shaft 51 and the inner axle shaft 52 may be fixedly joined to the universal joint 30 in a mating manner, and the outer axle shaft 51 may be provided with a sealing portion on a side of the universal joint 30 facing the outer axle 51, a laser cladding 53 may be provided on a surface of the sealing portion, the oil seal 60 may be formed as a ring, and the oil seal 60 may be fastened to the sealing portion so as to form a sealed cavity between the outer axle sleeve 40 and the outer axle shaft 51.
Therefore, the rotary seal assembly 100 for the automobile wheel assembly according to the embodiment of the utility model adopts the structure that the laser cladding layer 53 is arranged at the sealing part of the outer half shaft 51, and the cladding layer has high wear resistance and corrosion resistance, so that the tightness between the oil seal 60 and the outer half shaft 51 is improved, the laser cladding layer 53 can be maintained after being worn, and the rotary seal assembly 100 has the advantages of good tightness, long service life and the like, and can meet the use requirements of products in high speed, heavy load, adaptation to wet and hot coastal and off-road and other erodible environments.
According to an embodiment of the present utility model, as shown in fig. 4 and 5, the thickness of the laser cladding layer 53 is not less than 0.5mm, the surface hardness of the laser cladding layer 53 is not less than 560HV, and the surface roughness of the laser cladding layer 53 is ra0.3 to ra0.5um, so as to satisfy the use conditions of high wear resistance, corrosion resistance and high sealing property of the surface of the laser cladding layer 53.
Further, the thickness of the laser cladding layer 53 may be 0.5mm to 2mm, the surface hardness of the laser cladding layer 53 may be 560HV to 650HV, the surface roughness of the laser cladding layer 53 may be ra0.4um, and the laser cladding layer 53 may meet the use requirements of most heavy vehicles.
Preferably, the outer half shaft 51 is coaxially disposed with the mounting cavity 11.
According to one embodiment of the utility model, the bonding tensile strength of the laser cladding layer 53 and the sealing part can be more than 500Mpa, so that the detachment and abrasion of the laser cladding layer 53 can be prevented, and the service life of the product can be prolonged.
Further, the laser cladding layer 53 can resist salt fog corrosion for more than 500 hours in a sodium chloride solution with the mass fraction of 3.5%, and the corrosion resistance of the laser cladding layer 53 is enhanced.
In some embodiments of the present utility model, the oil seal 60 may be a polytetrafluoroethylene member, the rotary seal shaft 50 may be a steel member, the lubrication and antifriction effects between the outer half shaft 51 and the oil seal 60 may be improved, and the laser cladding 53 may be a high-entropy alloy layer composed of the elements Fe, ni, cr, co, mn, which may improve the strength, hardness, high-temperature resistance, wear resistance, and corrosion resistance of the laser cladding 53.
According to one embodiment of the utility model, the rotary seal shaft 50 may be a titanium alloy piece and the laser cladding 53 may be a high entropy alloy layer composed of elements Fe, ni, cr, co, ti, increasing the bonding force of the laser cladding 53 to the rotary seal surface.
According to one embodiment of the utility model, the rotary seal shaft 50 is an aluminum alloy piece and the laser cladding 53 is a high entropy alloy layer composed of elements Fe, ni, cr, co, al.
According to one embodiment of the utility model, the laser cladding layer 53 is a nanocrystalline high-entropy alloy layer.
According to an embodiment of the present utility model, as shown in fig. 5, the width of the laser cladding layer 53 may be larger than the width of the oil seal 60, and corrosion and abrasion of the edge of the oil seal 60 may be further prevented.
In some embodiments of the present utility model, as shown in fig. 4, a sealing ring 70 may be disposed on one side of the oil seal 60, and the sealing ring 70 may be sleeved on the surfaces of the oil seal 60 and the laser cladding 53, so as to further improve the tightness among the oil seal 60, the outer half shaft 51 and the outer shaft sleeve 40.
In summary, according to the method of the embodiment of the present utility model, by the combined structure of the wheel body 10, the speed reducer 20, the universal joint 30, the outer shaft sleeve 40, the rotary seal shaft 50 and the oil seal 60, and by the structure of providing the laser cladding layer 53 at the sealing portion of the outer half shaft 51, the sealing performance between the oil seal 60 and the outer half shaft 51 is increased due to the high wear-resistant and corrosion-resistant properties of the cladding layer, and the laser cladding layer 53 is maintainable after wear, the rotary seal assembly 100 has the advantages of good sealing performance, long service life, etc., and can meet the use requirements of the product in high speed, heavy load, adaptation to the wet and hot coastal and off-road and other erodible environments.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means 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 utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.
Claims (6)
1. A rotary seal assembly for an automotive wheel assembly, comprising:
the wheel body is provided with a mounting cavity along the axial direction of the wheel body;
the speed reducer is arranged at one end of the mounting cavity;
the universal joint is arranged at the other end of the mounting cavity;
the outer shaft sleeve is arranged in the mounting cavity, one end of the outer shaft sleeve is positioned at one side of the speed reducer, and the other end of the outer shaft sleeve extends along the other end of the mounting cavity;
the rotary sealing shaft is formed into an outer half shaft at one end and an inner half shaft at the other end, the inner half shaft is arranged outside the mounting cavity, a spline part is arranged at one end of the outer half shaft, the spline part is matched and connected with the speed reducer, the other end of the outer half shaft is matched with the universal joint and connected with the inner half shaft, an annular sealing part is formed on the outer surface of the part, which is in boundary with the inner half shaft, of the outer half shaft, and a laser cladding layer is arranged on the surface of the sealing part;
and the oil seal is formed into an annular piece, and the oil seal is sleeved on the sealing part so as to form a sealed cavity between the outer shaft sleeve and the outer half shaft.
2. The rotary seal assembly for an automotive wheel assembly of claim 1, wherein the laser cladding layer has a thickness of not less than 0.5mm, a surface hardness of not less than 560HV, and a surface roughness of from ra0.3 to ra0.5um.
3. The rotary seal assembly for an automotive wheel assembly of claim 2, wherein the laser cladding has a thickness of 0.5mm to 2mm, a surface hardness of 560HV to 650HV, and a surface roughness of ra0.4um.
4. The rotary seal assembly for an automotive wheel assembly of claim 3, wherein said laser cladding layer has a bond tensile strength with said seal of greater than 500Mpa.
5. The rotary seal assembly for an automotive wheel assembly of claim 4, wherein the laser cladding has a salt spray corrosion resistance in a 3.5% by mass sodium chloride solution for a period of up to 500 hours or more.
6. The rotary seal assembly for an automotive wheel assembly of claim 5, wherein the laser cladding has a width greater than a width of the oil seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222739003.XU CN219082236U (en) | 2022-10-18 | 2022-10-18 | Rotary seal assembly for a vehicle wheel assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222739003.XU CN219082236U (en) | 2022-10-18 | 2022-10-18 | Rotary seal assembly for a vehicle wheel assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219082236U true CN219082236U (en) | 2023-05-26 |
Family
ID=86391531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222739003.XU Active CN219082236U (en) | 2022-10-18 | 2022-10-18 | Rotary seal assembly for a vehicle wheel assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219082236U (en) |
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2022
- 2022-10-18 CN CN202222739003.XU patent/CN219082236U/en active Active
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