CN219366807U - Inner package framework power oil return seal - Google Patents

Abstract

The utility model discloses an inner-wrapping framework power oil return seal, which relates to the technical field of inner-wrapping framework oil return seals, and comprises an outer framework, wherein an inner framework is integrally formed in the outer framework, two grooves which are symmetrical to each other are formed between the outer framework and the inner framework; when the power return oil seal is used for a period of time, the two oil seal springs play a role in double compensation of radial force.

Description

Inner package framework power oil return seal

Technical Field

The utility model relates to the technical field of oil return seals of inner-wrapping frameworks, in particular to a power oil return seal of an inner-wrapping framework.

Background

The dynamic oil return (backflow) oil seal is a brand new oil seal structure developed according to the micro pump theory in the seventh and eighties of the last century, and has a high-efficiency oil return function because the leaked lubricating oil can be scraped back to the oil return cavity, so that the lip of the oil seal is always in a dynamic lubrication state, dry friction is avoided, the service life and sealing reliability of the oil seal are greatly improved, and the oil seal is rapidly and widely used; however, the existing inner-wrapping framework power oil return seal basically adopts an oil seal spring, does not have the functions of doubly preventing sediment, dust, moisture and the like from invading into the bearing from outside and limiting leakage of lubricating oil in the bearing, has poor clamping effect on the bearing, has lower sealing performance, has limited effect of enhancing radial force and has lower compensation effect.

The prior patent (publication number CN 112728091A) discloses a power oil return seal of an inner wrapping framework of a helicopter speed reducer, which comprises a reinforced metal framework, a tightening spring and a rubber sealing body; the reinforced metal framework is of an annular structure, the cross section of the reinforced metal framework is L-shaped, and the reinforced metal framework comprises a horizontal section and a vertical section which are integrally formed; the rubber sealing body comprises a main sealing lip body and an outer rubber coating, wherein the annular main sealing lip body is arranged in the upward direction of the horizontal section, a spring groove is formed in the outer wall of the main sealing lip body, and a clamping spring is arranged in the spring groove; coating the outer rubber on the vertical section and the horizontal section; the main sealing lip body comprises a dustproof auxiliary lip, an oil seal waist part and a lip crown part from bottom to top; the inner side of the lip crown part is provided with a lip, the upper side of the lip is a lip front angle, the lower side of the lip is a lip rear angle, a working surface is formed at the lip rear angle, and a circle of power oil return line is formed on the working surface in a compression molding mode; the oil seal has the advantages of more reliable sealing performance, longer service life, strong working condition adaptability, environmental vibration resistance and wide use temperature range; in the implementation process of the scheme, the oil seal spring is adopted, so that the oil seal spring has no dual functions of preventing sediment, dust, moisture and the like from invading into the bearing from outside and limiting leakage of lubricating oil in the bearing, has poor clamping effect on the bearing, has lower sealing performance, has limited effect of enhancing radial force, and has the problem of lower compensation effect.

Therefore, it is necessary to provide an inner package skeleton power oil return seal to solve the above technical problems.

Disclosure of Invention

The utility model provides an inner-wrapping framework power oil return seal, which solves the technical problems that the existing inner-wrapping framework power oil return seal does not have the dual functions of preventing sand, dust, water vapor and the like from invading into a bearing from outside and limiting lubricating oil in the bearing from leaking, has poor clamping effect on the bearing, lower sealing performance and limited effect of enhancing radial force and has lower compensation effect due to the adoption of an oil seal spring.

In order to solve the technical problems, the inner package framework power oil return seal provided by the utility model comprises an outer framework, wherein an inner framework is integrally formed in the outer framework, two grooves which are symmetrical to each other are formed between the outer framework and the inner framework, a hollow circular ring is integrally formed in the outer framework, an annular framework is arranged on the outer wall of the hollow circular ring, one end, far away from the hollow circular ring, of the annular framework extends to the inner part of the inner framework, two oil seal springs which are symmetrical to each other are arranged on the outer wall of the inner framework, and two sealing rings which are symmetrical to each other are integrally formed in the inner wall of the outer framework.

Preferably, the outer framework, the hollow circular ring, the annular framework and the oil seal spring are all made of carbon steel.

Preferably, two symmetrical inclined slots are formed in the inner wall of the inner framework.

Preferably, a positioning groove is formed in the inner wall of the inner framework.

Preferably, the inner wall of the hollow circular ring is integrally formed with a filling body.

Preferably, the top and bottom of the exoskeleton are uniformly formed with a first arc chamfer.

Preferably, limit notch has all been seted up to the inner wall and the outer wall of ectoskeleton.

Preferably, the outer wall of the inner framework is integrally formed with two second arc-shaped chamfers which are symmetrical to each other.

Compared with the related art, the power oil return seal of the inner package framework has the following beneficial effects:

1. according to the utility model, the structural stability of the outer framework and the inner framework is improved by arranging the hollow circular ring and the annular framework, the connection structure between the two grooves at the opening is not easy to break, and the oil seal is not easy to deform by arranging the outer framework, the hollow circular ring, the annular framework and the oil seal spring which are made of carbon steel materials, so that the service life of the power oil seal is prolonged; when the power return oil seal is used for a period of time, the two oil seal springs play a role in double compensation of radial force.

2. According to the utility model, the two inclined grooves are arranged, so that the inner framework is convenient to mount and dismount, the assembly of the oil seal is further facilitated, the positioning grooves are arranged to limit the movement of the inner framework, the inner framework is ensured to be more stable after being assembled, the first arc chamfer has certain safety, the corners of the first arc chamfer are not easy to scratch a user during assembly, meanwhile, the first arc chamfer has certain attractiveness, the outer framework is ensured to be more stable after being assembled, the contact pressure of the inner framework is increased, the axial positioning is effectively ensured, and meanwhile, dust and other impurity particles are prevented from entering the grooves.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an inner-wrap-skeleton power oil seal;

FIG. 2 is a schematic cross-sectional view of an oil seal with a power return of an inner wrap frame;

fig. 3 is an enlarged view of the structure at a in fig. 2.

Reference numerals in the drawings: 1. an outer skeleton; 2. an inner skeleton; 3. a groove; 4. a hollow circular ring; 5. an annular skeleton; 6. an oil seal spring; 7. a seal ring; 8. a chute; 9. a positioning groove; 10. a filler; 11. a first arc chamfer; 12. a limit notch; 13. and a second arc chamfer.

Detailed Description

Embodiments of the present utility model are described in detail below.

1-3, an inner-wrapped skeleton power oil seal comprises an outer skeleton 1, wherein an inner skeleton 2 is integrally formed in the outer skeleton 1, two grooves 3 which are symmetrical to each other are formed between the outer skeleton 1 and the inner skeleton 2, a hollow circular ring 4 is integrally formed in the outer skeleton 1, an annular skeleton 5 is fixedly arranged on the outer wall of the hollow circular ring 4, one end of the annular skeleton 5 far away from the hollow circular ring 4 extends to the inner part of the inner skeleton 2, two oil seal springs 6 which are symmetrical to each other are fixedly arranged on the outer wall of the inner skeleton 2, two sealing rings 7 which are symmetrical to each other are integrally formed in the inner wall of the outer skeleton 1, and by arranging the hollow circular ring 4 and the annular skeleton 5, the structural stability of the outer skeleton 1 and the inner skeleton 2 is improved, the connecting structure between the two grooves 3 at the opening is ensured to be not easy to break, and the oil seal is not easy to deform by arranging the outer skeleton 1, the hollow circular ring 4, the annular skeleton 5 and the oil seal springs 6 which are made of carbon steel materials, so that the power oil seal service life is prolonged, and the two sealing rings 7 are arranged and matched with the two oil seal springs 6 to have better clamping effect on radial leakage and dust leakage in the bearing, and dust leakage performance is improved, and the dust leakage performance is improved; when the power return oil seal is used for a period of time, the two oil seal springs 6 play a role in double compensation of radial force.

To exoskeleton 1, cavity ring 4, annular skeleton 5 and oil blanket spring 6, the material is carbon steel, makes this oil return seal be difficult for deformation through exoskeleton 1, cavity ring 4, annular skeleton 5 and oil blanket spring 6 that set up to the carbon steel material, has prolonged the life of this oil return seal simultaneously.

In addition, to the inner wall integrated into one piece of cavity ring 4 have the packing body 10, through setting up the packing body 10, ensure that cavity ring 4 is difficult for deformation, and then ensure that exoskeleton 1 is difficult for taking place deformation, therefore prolonged exoskeleton 1's life.

On the basis of embodiment I, refer to fig. 3, two chute 8 of mutual symmetry have been seted up to the inner wall of inner skeleton 2, through setting up two chute 8, the installation and the dismantlement of inner skeleton 2 of being convenient for, and then the assembly of this back oil blanket, constant head tank 9 has been seted up to the inner wall of inner skeleton 2, through setting up constant head tank 9, it is spacing to the removal of inner skeleton 2, ensure that inner skeleton 2 assembly back is more stable, the top and the uniform integrated into one piece of bottom of outer skeleton 1 have first arc chamfer 11, first arc chamfer 11 has certain security, its corner is difficult for the fish tail user when the assembly, certain aesthetic property has simultaneously, spacing notch 12 has all been seted up to the inner wall and the outer wall of outer skeleton 1, through setting up spacing notch 12, be convenient for fix outer skeleton 1, it is more stable after the assembly to have guaranteed, the outer wall integrated into one piece of inner skeleton 2 has two second arc chamfers 13 of mutual symmetry, through setting up two second arc chamfers 13, the contact pressure of inner skeleton 2 has been increased, effectively guarantee axial positioning, prevent impurity particle such as dust from getting into recess 3 simultaneously.

Working principle:

this power return oil seals dual prevent silt, dust, aqueous vapor etc. from invading in the bearing from outside and when restricting lubricating oil in the bearing to spill:

the hollow circular ring 4 and the annular framework 5 are arranged, so that the structural stability of the outer framework 1 and the inner framework 2 is improved, the connecting structure between the two grooves 3 at the opening is not easy to break, the oil return seal is not easy to deform through the outer framework 1, the hollow circular ring 4, the annular framework 5 and the oil seal spring 6 which are made of carbon steel materials, the service life of the power oil return seal is prolonged, and by arranging the two sealing rings 7 and matching with the use of the two oil seal springs 6, sand, dust, moisture and the like are doubly prevented from invading into the grooves 3 from outside and lubricating oil in the bearing is limited to leak, the clamping effect on the bearing is improved, the sealing performance is better, the radial force is enhanced, and the compensation effect is achieved; when the power return oil seal is used for a period of time, the two oil seal springs 6 play a role in double compensation of radial force.

In the process of using the oil return seal:

through setting up two chute 8, the installation and the dismantlement of inner skeleton 2 of being convenient for, and then the assembly of this back oil blanket of being convenient for, through setting up constant head tank 9, it is spacing to the removal of inner skeleton 2, it is more stable after the assembly of inner skeleton 2 is ensured, first arc chamfer 11 has certain security, its corner is difficult fish tail user when the assembly, certain aesthetic property has simultaneously, through setting up spacing notch 12, it is more stable after having ensured that outer skeleton 1 assembles, through setting up two second arc chamfers 13, the contact pressure of inner skeleton 2 has been increased, effectively guarantee axial positioning, prevent simultaneously that impurity particles such as dust from getting into in the recess 3.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (8)

1. The utility model provides an inner package skeleton power returns oil blanket, includes outer skeleton (1), its characterized in that, the inside integrated into one piece of outer skeleton (1) has inner skeleton (2), two recess (3) of mutual symmetry have been seted up between outer skeleton (1) and inner skeleton (2), the inside integrated into one piece of outer skeleton (1) has cavity ring (4), annular skeleton (5) are installed to the outer wall of cavity ring (4), the one end that cavity ring (4) was kept away from to annular skeleton (5) extends to the inside of inner skeleton (2), two oil blanket springs (6) of mutual symmetry are installed to the outer wall of inner skeleton (2), the inner wall integrated into one piece of outer skeleton (1) has two sealing rings (7) of mutual symmetry.

2. The inner-wrapped framework power oil return seal according to claim 1, wherein the outer framework (1), the hollow circular ring (4), the annular framework (5) and the oil seal spring (6) are all made of carbon steel.

3. An inner-wrapped-skeleton power oil return seal according to claim 1, characterized in that two mutually symmetrical inclined grooves (8) are formed in the inner wall of the inner skeleton (2).

4. The inner package framework power oil return seal according to claim 1, wherein a positioning groove (9) is formed in the inner wall of the inner framework (2).

5. An inner package skeleton power oil return seal according to claim 1, characterized in that the inner wall of the hollow circular ring (4) is integrally formed with a filling body (10).

6. An inner skeleton power return oil seal according to claim 1, wherein the top and bottom of the outer skeleton (1) are integrally formed with a first arcuate chamfer (11).

7. The inner-wrapped framework power oil return seal according to claim 1, wherein limiting notches (12) are formed in the inner wall and the outer wall of the outer framework (1).

8. An inner skeleton power return oil seal according to claim 1, characterized in that the outer wall of the inner skeleton (2) is integrally formed with two second arc-shaped chamfers (13) which are symmetrical to each other.