CN223754635U - A high-pressure wheel hub frame oil seal - Google Patents

Abstract

The utility model provides a high-pressure wheel hub framework oil seal, which relates to the field of wheel hub oil seals, and comprises an outer framework, an inner supporting component and a main sealing lip, wherein the outer framework is used for providing stable support and positioning for the oil seal, so that the stability of an integral structure is ensured, the inner supporting component is internally provided with longitudinal and transverse supporting pieces in a wave-shaped and annular staggered manner, the bending strength is greatly improved, radial load generated by wheel hub rotation is effectively dispersed, the oil seal is prevented from being deformed, a buffer groove on the surface of the buffer groove can absorb mechanical vibration energy, the oil seal can work normally under high pressure and vibration environment, a stable foundation is provided for the main sealing lip and a dustproof part, the main sealing lip is used for effectively sealing lubricating oil in a wheel hub by virtue of the material characteristics and the special lip design, the dustproof part is prevented from leaking, the dustproof part forms a protection barrier through the dustproof lip and a fastening spring, the external impurity is prevented from entering the wheel hub, the wheel hub can normally run under the complex working condition environment, and the service life and the reliability of the wheel hub are effectively improved.

Description

High-pressure wheel hub skeleton oil seal

Technical Field

The utility model relates to the field of hub oil seals, in particular to a high-pressure hub framework oil seal.

Background

High pressure wheel hub skeleton seals play a vital role in the hub systems of modern vehicles such as automobiles, trucks and the like, and their primary function is to prevent leakage of lubricant or grease within the hub, which is critical to maintaining efficient operation of the hub bearings and other related components, and during vehicle travel, the hub rotates at high speeds, which results in a tendency for the internal lubricant to leak outwardly under the effects of centrifugal forces and pressures, and in order to address such challenges, the high pressure wheel hub skeleton seals are designed to closely conform to the gap between the shaft and the hub housing, thereby forming a strong and effective seal barrier, which not only prevents leakage of lubricant, ensures that adequate lubricant is maintained within the hub to support normal mechanical operation, but also effectively blocks ingress of dirt, moisture, and silt and other impurities in the external environment, particularly in off-road vehicles or vehicles that often travel under rough road conditions.

However, the conventional support structure of the high-pressure hub oil seal is simple in design, a conventional rectangular section support member is generally adopted, the bending strength of the structure is low, deformation is easy to occur under the radial load effect generated by high-speed rotation of the hub, after the support structure is deformed, the stability of the whole structure of the oil seal can be damaged, the sealing performance is reduced, and in some industrial equipment running at high speed, the oil seal can be damaged in a short time due to the fact that the support structure cannot effectively disperse the load, and the service life and reliability of the oil seal are reduced.

Therefore, it is necessary to provide a new high-pressure hub skeleton oil seal to solve the above technical problems.

Disclosure of utility model

In order to solve the technical problems, the utility model provides a high-pressure hub framework oil seal.

The high-pressure wheel hub framework oil seal comprises an outer framework body, an inner supporting component and a main sealing lip, wherein a supporting groove for placing the inner supporting component is formed in the outer framework body, the inner supporting component is positioned in the supporting groove in a staggered mode, and one side of the outer framework body is integrally and fixedly connected with the main sealing lip;

The inner support assembly comprises a longitudinal support and a transverse support, the longitudinal support and the transverse support are in wave-shaped annular mutual staggered positions in the support groove, and the outer surfaces of the two sides of the longitudinal support and the outer surfaces of the two sides of the transverse support are all attached to the inner side wall of the support groove.

Preferably, the vertical cross section of the longitudinal support member and the vertical cross section of the transverse support member are in an 'I' -shaped arrangement, and a plurality of buffer grooves are formed in the surfaces of the two sides, which are respectively attached to the support grooves, of the longitudinal support member and the transverse support member at equal intervals.

Preferably, a dustproof part is fixedly arranged on one side of the outer framework body, and the dustproof part and the main sealing lip are positioned on the same side surface of the outer framework body.

Preferably, the dustproof part comprises a dustproof lip, and the dustproof lip and one side, adjacent to the outer framework, of the dustproof part are integrally and fixedly connected.

Preferably, the dustproof part further comprises a fastening spring, a placing groove is formed in the main sealing lip, the fastening spring is sleeved inside the placing groove, and the outer side surface of the fastening spring is attached to the inner side wall of the placing groove.

Preferably, a sealing cavity is formed in the surface of one side, adjacent to the main sealing lip, of the outer framework.

Compared with the related art, the high-pressure hub framework oil seal provided by the utility model has the following structure

The beneficial effects are that:

The outer framework body is used for providing stable support and positioning for the oil seal, the whole structure is stable, the longitudinal and transverse supporting pieces are arranged in a wavy annular staggered manner in the inner supporting assembly, meanwhile, the cross sections of the inner supporting assembly are staggered in an I-shaped manner and are greatly improved in bending strength compared with the traditional rectangular cross section, radial load generated by rotation of the hub can be effectively dispersed, deformation of the oil seal is prevented, the buffer groove on the surface of the inner supporting assembly can absorb 15% -20% of mechanical vibration energy, normal operation of the oil seal under high pressure and vibration environments is guaranteed, a stable foundation is provided for the main sealing lip and the dustproof part, the main sealing lip is designed by virtue of material characteristics and special lips, effective sealing of lubricating oil in the hub is realized, leakage is prevented, the dustproof part forms a protective barrier through the dustproof lip and the fastening spring, external impurities are prevented from entering the hub, and all the assemblies are mutually matched, so that the hub can normally operate under complex working conditions such as high pressure, high speed, wide temperature range and the service life and reliability of the hub are effectively improved.

Drawings

FIG. 1 is a schematic diagram of a split structure of a high-pressure hub skeleton oil seal provided by the utility model;

FIG. 2 is a schematic cross-sectional view of a high-pressure hub skeleton oil seal provided by the utility model;

FIG. 3 is a schematic drawing of a split section of a high-pressure hub skeleton oil seal provided by the utility model;

Fig. 4 is a schematic view of a partial structure of a transverse support provided by the present utility model.

The drawing comprises an outer framework body 1, a supporting groove 12, a sealing cavity 2, an inner supporting component 21, a longitudinal supporting component 22, a transverse supporting component 23, a buffer groove 3, a main sealing lip 4, a dustproof component 41, a dustproof lip 42, a fastening spring 43 and a placing groove.

Detailed Description

The utility model will be further described with reference to the drawings and embodiments.

Referring to fig. 1, fig. 2, fig. 3 and fig. 4 in combination, fig. 1 is a schematic diagram of a split structure of a high-pressure hub frame oil seal provided by the present utility model, fig. 2 is a schematic diagram of a cross-section structure of a high-pressure hub frame oil seal provided by the present utility model, fig. 3 is a schematic diagram of a split cross-section of a high-pressure hub frame oil seal provided by the present utility model, and fig. 4 is a schematic diagram of a partial structure of a transverse support member provided by the present utility model.

In a specific implementation process, as shown in fig. 1-4, the high-pressure hub skeleton oil seal provided by the utility model comprises an outer skeleton body 1, an inner supporting component 2 and a main sealing lip 3, wherein a supporting groove 11 for placing the inner supporting component 2 is formed in the outer skeleton body 1, the inner supporting components 2 are alternately positioned in the supporting groove 11, and one side of the outer skeleton body 1 is integrally and fixedly connected with the main sealing lip 3;

The inner support assembly 2 comprises a longitudinal support piece 21 and a transverse support piece 22, the longitudinal support piece 21 and the transverse support piece 22 are mutually in a wave-shaped annular staggered position in the support groove 11, and the outer surfaces of the two sides of the longitudinal support piece 21 and the transverse support piece 22 are respectively attached to the inner side wall of the support groove 11;

In a specific embodiment, the vertical cross sections of the longitudinal supporting piece 21 and the transverse supporting piece 22 are in an 'I' -shaped arrangement, a plurality of buffer grooves 23 are formed in the surfaces of the two sides of the longitudinal supporting piece 21 and the transverse supporting piece 22, which are respectively attached to the supporting groove 11, at equal intervals, and a sealing cavity 12 is formed in the surface of one side, adjacent to the main sealing lip 3, of the outer skeleton body 1;

It should be noted that, the inner support assembly 2 is composed of a longitudinal support 21 and a transverse support 22 which are staggered with each other, and the vertical cross sections of the two are in an "I" shape. The unique structural design greatly improves the bending strength of the supporting piece, compared with the traditional rectangular section, the bending strength is improved by 30%, radial loads can be generated in the rotating process of the hub, the longitudinal supporting piece 22 and the transverse supporting piece 22 can effectively disperse the loads, deformation of an oil seal caused by uneven stress is prevented, and in addition, the buffer grooves 23 formed in the surfaces of the two sides of the supporting piece at equal intervals can absorb 15% -20% of mechanical vibration energy when the hub runs.

One side of the outer framework 1 is fixedly provided with a dustproof part 4, and the dustproof part 4 and the main sealing lip 3 are positioned on the same side surface of the outer framework 1.

The dustproof member 4 includes a dustproof lip 41, and the dustproof lip 41 and the adjacent side of the outer frame 1 are integrally and fixedly connected.

The dustproof part 4 further comprises a fastening spring 42, a placing groove 43 is formed in the main sealing lip 3, the fastening spring 42 is sleeved in the placing groove 43, and the outer side surface of the fastening spring 42 is attached to the inner side wall of the placing groove 43.

The working principle provided by the utility model is as follows:

In the actual running process of the hub, the outer framework 1 provides stable support and positioning for the whole oil seal, the inner support assembly 2 ensures that the oil seal is not deformed under high pressure and vibration environment through the unique wavy annular staggered structure and buffer function, a stable working foundation is provided for the main sealing lip 3 and the dustproof part 4, and the main sealing lip 3 utilizes the material characteristics and special lip design thereof to realize effective sealing of lubricating oil in the hub and prevent leakage. The dustproof part 4 forms a protective barrier outside the oil seal to prevent external impurities from entering the hub, and all the components are mutually matched, so that the normal operation of the hub under complex working conditions such as high pressure, high speed, wide temperature range and the like is ensured, and the service life and reliability of the hub are improved.

The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present utility model.

Claims (6)

1. The high-pressure hub framework oil seal is characterized by comprising an outer framework body (1), an inner supporting component (2) and a main sealing lip (3), wherein a supporting groove (11) for placing the inner supporting component (2) is formed in the outer framework body (1), the inner supporting component (2) is positioned in the supporting groove (11) in a staggered manner, and one side of the outer framework body (1) is integrally and fixedly connected with the main sealing lip (3);

The inner support assembly (2) comprises a longitudinal support (21) and a transverse support (22), wherein the longitudinal support (21) and the transverse support (22) are in a wave-shaped annular shape and are mutually staggered and positioned inside the support groove (11), and the outer surfaces of the two sides of the longitudinal support (21) and the transverse support (22) are attached to the inner side wall of the support groove (11).

2. The high-pressure hub skeleton oil seal according to claim 1, wherein the vertical cross sections of the longitudinal supporting members (21) and the transverse supporting members (22) are in an 'i' -shape, and a plurality of buffer grooves (23) are formed in equal distances on the two side surfaces of the longitudinal supporting members (21) and the transverse supporting members (22) respectively attached to the supporting grooves (11).

3. The high-pressure hub framework oil seal according to claim 2, wherein a dustproof part (4) is fixedly arranged on one side of the outer framework body (1), and the dustproof part (4) and the main sealing lip (3) are positioned on the same side surface of the outer framework body (1).

4. A high-pressure hub skeleton oil seal according to claim 3, wherein the dust-proof component (4) comprises a dust-proof lip (41), and the dust-proof lip (41) and one side adjacent to the outer skeleton body (1) are integrally and fixedly connected.

5. The high-pressure hub skeleton oil seal according to claim 4, wherein the dustproof part (4) further comprises a fastening spring (42), a placement groove (43) is formed in the main sealing lip (3), the fastening spring (42) is sleeved in the placement groove (43), and the outer side surface of the fastening spring (42) is attached to the inner side wall of the placement groove (43).

6. The high-pressure hub skeleton oil seal according to claim 5, wherein a seal cavity (12) is formed on a side surface of the outer skeleton body (1) adjacent to the main seal lip (3).