CN220956809U - Long-service-life muddy water-proof hub oil seal with V-shaped ring - Google Patents

Abstract

The utility model relates to the technical field of hub oil seals, in particular to a long-service-life muddy water-proof hub oil seal with a V-shaped ring. The long-life muddy water-proof hub oil seal with the V-shaped ring comprises an annular inner framework, a middle framework and an outer framework, wherein the cross sections of the inner framework and the middle framework are L-shaped, and the bending directions of the inner framework and the middle framework are opposite; the outer framework comprises a vertical framework closely attached to the outer side wall of the middle framework, a plane framework fixedly connected to the vertical framework, and a dustproof framework fixedly connected to the plane framework, and an annular supporting piece is arranged between the plane framework and the inner framework; the outer side wall of the inner framework is fixedly connected with a sealing layer, and the inner framework is in interference fit with the middle framework through a main lip; a dustproof ring with a V-shaped section is sleeved on the dustproof framework; the hub oil seal improves the muddy water preventing capability of the product, and can only replace the V-shaped ring under the condition of not replacing the oil seal after the V-shaped ring is worn and failed, so that the service life of the oil seal is indirectly prolonged.

Description

Long-service-life muddy water-proof hub oil seal with V-shaped ring

Technical Field

The utility model relates to the technical field of hub oil seals, in particular to a long-service-life muddy water-proof hub oil seal with a V-shaped ring.

Background

The hub is a cylindrical metal part with the inner contour of the tire supporting the tire and the center of the metal part is arranged on the shaft; the hub oil seal plays a role in preventing sand, dust, vapor and the like from invading into the bearing from outside and restricting leakage of lubricating oil in the bearing.

With the development of present farm machinery, the requirement of operation under abominable operating mode is more and more harsh, the sealed design of current wheel hub oil blanket does not satisfy the use of this kind of environment, for example in heavy muddy water environment work, dust in the external environment, impurity such as muddy water enters into sealed system easily, and enter into between axle and the oil blanket, when the axle is rotatory, the impurity such as invasive dust, silt produces the friction and causes wearing and tearing to axle, the oil blanket lip, moreover the wearing and tearing of oil blanket lip has aggravated the oil leak phenomenon and has taken place, the wearing and tearing of axle makes the surface of axle cause the destruction, so it is generally shorter to cause current wheel hub oil blanket life, and wheel hub oil blanket structure is mostly global design, when the oil blanket lip damages, can only carry out whole change, cause the waste.

Chinese patent CN202222978996.6 discloses a box type oil seal with assembly limit step, publication No. CN218718775U, the box type oil seal comprises an outer oil seal, an inner oil seal and a metal seal ring which are all collar rings; the section of the outer oil seal is two L-shaped sections which are long and short and the top ends of the two L-shaped sections are connected, and the section of the inner oil seal is also L-shaped; the left side of the outer oil seal is bent to form an assembly limiting step, and the right side of the outer oil seal is bent to be opposite to the inner oil seal and keeps a distance; the right side bending bottom surface of the outer oil seal abuts against the top end of the metal sealing ring, the side surface of the metal sealing ring is tightly attached to the outer oil seal, the bending part of the inner oil seal is positioned between the metal sealing ring and the outer oil seal, and a channel is formed by keeping a distance; the sealing layers are wrapped outside the outer oil seal and the inner oil seal; the sealing layer is provided with a first dustproof lip at a passage opening between the outer oil seal and the inner oil seal, and a limiting boss is arranged in the passage; a second dustproof lip is arranged in the channel between the inner oil seal and the metal sealing ring, and a third dustproof lip is arranged at the channel opening. However, the box type oil seal has some defects: the dustproof lip and the oil seal framework of the box-type oil seal are integrally designed, the dustproof lip cannot be detached from the oil seal framework, and when the dustproof lip is seriously worn by sediment, the dustproof lip needs to be integrally replaced, so that the service life of the oil seal is shortened.

Disclosure of utility model

In order to solve the problems in the prior art, the utility model provides the long-service-life muddy water-proof hub oil seal with the V-shaped ring, so that the muddy water-proof capability of a product is improved while the sealing performance is realized, and only the V-shaped ring can be replaced under the condition that the oil seal is not replaced after the V-shaped ring is worn and failed, so that the service life of the oil seal is indirectly prolonged.

In order to achieve the purpose, the utility model provides the technical scheme that the long-life muddy water-proof hub oil seal with the V-shaped ring comprises an annular inner framework, a middle framework surrounding the outer side of the inner framework and an outer framework surrounding the outer side of the middle framework, wherein the sections of the inner framework and the middle framework are L-shaped, and the bending directions of the inner framework and the middle framework are opposite; the outer framework comprises a vertical framework closely attached to the outer side wall of the middle framework, a plane framework fixedly connected to the inner side wall of the vertical framework and a dustproof framework fixedly connected to the lower surface of the plane framework, and an annular supporting piece is arranged between the plane framework and the inner framework; the sealing layer is fixedly connected to the outer side wall of the inner framework, and the inner framework and the middle framework are in interference fit through the main lip; and a dustproof ring with a V-shaped section is sleeved on the dustproof framework.

By adopting the structural design, the frames are mutually matched in a cooperative manner, so that the oil seal has better sealing effect in a severe environment, the support piece ensures the axial distance between the inner framework and the outer framework, and the function of preventing dust and muddy water from entering the oil seal can be realized; the dust ring can prevent muddy water from entering the oil seal, and only the dust ring is replaced after the dust ring fails due to abrasion, so that the whole oil seal is not required to be replaced, and the service life of the oil seal is indirectly prolonged.

Preferably, the dustproof ring comprises a supporting ring sleeved on the dustproof framework and a dustproof lip fixedly connected to the lower surface of the supporting ring, an included angle between the dustproof lip and the supporting ring is an acute angle, and the supporting ring is in interference fit with the plane framework.

By adopting the structural design, the dustproof lip and the end face of the shell rotate relatively, so that dynamic sealing in the axial direction is realized, muddy water prevention effect is realized, and the supporting ring is in interference with the plane framework and the dustproof framework, so that the V-shaped dustproof ring is fixed in the outer framework.

Preferably, the lower end of the sealing layer is provided with an axial auxiliary lip in interference fit with the dustproof framework, and the lower end of the axial auxiliary lip is elastically pressed against the outer side wall of the dustproof framework.

By adopting the structural design, the axial auxiliary lip can further prevent muddy water from entering, and the tightness of the hub oil seal is improved.

Preferably, the outer side wall of the sealing layer is wavy.

By adopting the structural design, the tightness of the sealing layer to the axle is improved.

Preferably, the inner side of the main lip wraps the spring.

By adopting the structural design, the spring and the main lip provide sealing force together, so that the sealing performance between the inner framework and the middle framework is ensured.

Compared with the prior art, the utility model has the beneficial effects that:

1. The sealing performance is realized, and simultaneously, the muddy water preventing capability of the product is improved.

2. The V-shaped dust ring can be replaced only under the condition that the oil seal is not replaced after the V-shaped dust ring is worn and fails, so that the service life of the oil seal is indirectly prolonged.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

Detailed Description

Referring to fig. 1, the present utility model provides a technical solution: the long-life muddy water-proof hub oil seal with the V-shaped ring comprises an annular inner framework 1, a middle framework 2 surrounding the outer side of the inner framework 1 and an outer framework 3 surrounding the outer side of the middle framework 2.

The sections of the inner framework 1 and the middle framework 2 are L-shaped, the bending directions of the inner framework 1 and the middle framework 2 are opposite, and the opening directions of the inner framework 1 and the middle framework 2 are opposite; the outer skeleton 3 includes the vertical skeleton 31 of inseparable laminating on middle part skeleton 2 lateral wall, the plane skeleton 32 of fixed connection on the vertical skeleton 31 inside wall, the dustproof skeleton 33 of fixed connection on plane skeleton 32 lower surface, and vertical skeleton 31, plane skeleton 32 and dustproof skeleton 33 are integrated into one piece's structure, set up support piece 15 between plane skeleton 32 and the inner skeleton 1, support piece 15 is square ring structure in cross-section.

The sealing layer 11 is tightly attached to the outer side wall of the inner framework 1, the outer side wall of the sealing layer 11 is wavy, an axial auxiliary lip 16 in interference fit with the dustproof framework 33 is arranged at the lower end of the sealing layer 11, the lower end of the axial auxiliary lip 16 is elastically pressed against the outer side wall of the dustproof framework 33, the inner framework 1 is in interference fit with the middle framework 2 through a main lip 14, and a spring 13 is wrapped on the inner side of the main lip 14; the dustproof framework 33 is sleeved with a dustproof ring 4 with a V-shaped section, the dustproof ring 4 comprises a supporting ring 42 sleeved on the dustproof framework 33 and a dustproof lip 41 fixedly connected to the lower surface of the supporting ring 42, and an included angle between the dustproof lip 41 and the supporting ring 42 is an acute angle.

Working principle: firstly, the staff assembles this wheel hub oil blanket on the axletree, sealing layer 11 interference fit is on the axletree, dustproof skeleton 33 and dustproof lip 41 constitute first line of defense, hinder most muddy water, axial vice lip 16 constitutes the second line of defense, hinder muddy water and get into, support 15 constitutes the third line of defense, guarantee the axial distance between inside and outside skeleton, can play again and prevent dust, muddy water entering the inside effect of oil blanket, dust ring 4 bears the damage that most muddy water brought, but dust ring 4 can dismantle and change from dustproof skeleton 33, further prolonged the life of this wheel hub oil blanket.

The structures, proportions, sizes, etc. shown in the drawings attached hereto are for illustration purposes only and are not intended to limit the scope of the utility model, which is defined by the claims, but rather by the claims. Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the utility model, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the utility model may be practiced.

The utility model has been described above with reference to preferred embodiments, but the scope of the utility model is not limited thereto, and any and all technical solutions falling within the scope of the claims are within the scope of the utility model. Various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict.

Claims (5)

1. The utility model provides a long-life muddy water wheel hub oil blanket that prevents of taking V type ring, is annular inner frame (1), around middle part skeleton (2) in the inner frame (1) outside, around outer skeleton (3) in the middle part skeleton (2) outside, its characterized in that: the sections of the inner framework (1) and the middle framework (2) are L-shaped, and the bending directions of the inner framework (1) and the middle framework (2) are opposite; the outer framework (3) comprises a vertical framework (31) tightly attached to the outer side wall of the middle framework (2), a plane framework (32) fixedly connected to the inner side wall of the vertical framework (31) and a dustproof framework (33) fixedly connected to the lower surface of the plane framework (32), and an annular supporting piece (15) is arranged between the plane framework (32) and the inner framework (1); the sealing layer (11) is fixedly connected to the outer side wall of the inner framework (1), and the inner framework (1) and the middle framework (2) are in interference fit through the main lip (14); a dustproof ring (4) with a V-shaped section is sleeved on the dustproof framework (33).

2. The long life anti-mud wheel hub oil seal with V-ring of claim 1, wherein: the dustproof ring (4) comprises a supporting ring (42) sleeved on the dustproof framework (33), and a dustproof lip (41) fixedly connected to the lower surface of the supporting ring (42), wherein an included angle between the dustproof lip (41) and the supporting ring (42) is an acute angle, and the supporting ring (42) is in interference fit with the plane framework (32).

3. The long life anti-mud wheel hub oil seal with V-ring of claim 1, wherein: the lower end of the sealing layer (11) is provided with an axial auxiliary lip (16) in interference fit with the dustproof framework (33), and the lower end of the axial auxiliary lip (16) is elastically pressed against the outer side wall of the dustproof framework (33).

4. The long life anti-mud wheel hub oil seal with V-ring of claim 1, wherein: the outer side wall of the sealing layer (11) is wavy.

5. The long life anti-mud wheel hub oil seal with V-ring of claim 1, wherein: the spring (13) is wrapped on the inner side of the main lip (14).