CN217234335U

CN217234335U - Oil seal for gearbox

Info

Publication number: CN217234335U
Application number: CN202220975522.3U
Authority: CN
Inventors: 刘云甲
Original assignee: Changzhou Domt Sealing Technology Co ltd
Current assignee: Changzhou Domt Sealing Technology Co ltd
Priority date: 2022-04-25
Filing date: 2022-04-25
Publication date: 2022-08-19
Anticipated expiration: 2032-04-25

Abstract

The utility model discloses an oil seal for a gearbox, which comprises an inner sealing body, an outer sealing body and a framework; wherein the inner seal body includes an axial ring portion extending in an axial direction, a radial portion connected to a lower end portion of the axial ring portion and extending radially inward, and a lip portion connected to an inner peripheral portion of the radial portion; the framework comprises an axial frame body extending along the axial direction and a radial frame body extending along the radial direction; the axial frame body is embedded in the axial ring part; the inner periphery of the radial frame body is connected with the lower end of the axial frame body; the outer periphery of the radial frame body is exposed out of the inner sealing body; the outer sealing body is connected to the outer peripheral portion of the radial frame body. The utility model discloses can improve the convenience of dismantlement.

Description

Oil seal for gearbox

Technical Field

The utility model relates to an oil blanket for gearbox.

Background

At present, including outer seat and a plurality of pivot in the gearbox, in order to form sealedly between outer seat and pivot, need set up the oil blanket usually between outer seat and pivot, but current oil blanket is difficult to dismantle in case after the installation, and is very inconvenient.

Disclosure of Invention

The utility model aims to solve the technical problem that overcome prior art's defect, provide an oil blanket for gearbox, it can improve the convenience of dismantling.

In order to solve the technical problem, the technical scheme of the utility model is that: an oil seal for a gearbox comprises an inner sealing body, an outer sealing body and a framework; wherein the content of the first and second substances,

the inner seal body includes an axial ring portion extending in an axial direction, a radial portion connected to a lower end portion of the axial ring portion and extending radially inward, and a lip portion connected to an inner peripheral portion of the radial portion;

the framework comprises an axial frame body extending along the axial direction and a radial frame body extending along the radial direction;

the axial frame body is embedded in the axial ring part;

the inner periphery of the radial frame body is connected with the lower end of the axial frame body;

the outer periphery of the radial frame body is exposed out of the inner sealing body;

the outer sealing body is connected to the outer periphery of the radial frame body.

Further provides a concrete structure of lip, the lip includes the lip body that at least two from the top down set gradually.

Furthermore, the lip body is equipped with two, is last lip body and lower lip body respectively, go up the lip body with be formed with the lubrication chamber between the lower lip body.

Further, the sealing direction of the upper lip body and the sealing direction of the lower lip body are both upward.

Further, in order to install the elastic piece, an assembling groove which is arranged around the upper lip body and used for installing the elastic piece is formed in the peripheral wall of the upper lip body.

Further, the lower end face of the inner sealing body is flush with the lower end face of the outer sealing body.

Further, a stepped portion is provided on an outer peripheral portion of the outer seal body.

In order to further save materials, an upper annular groove located above the radial frame body and a lower annular groove located below the radial frame body are formed between the outer sealing body and the inner sealing body.

The inner sealing body, the outer sealing body and the framework are made of rubber, and/or the framework is made of metal.

Further in order to facilitate installation, the upper end part of the outer side wall of the axial ring part is provided with a conical part which is reduced from bottom to top.

After the technical scheme is adopted, the gearbox comprises an outer seat and a plurality of rotating shafts, a mounting hole is formed in the outer seat, the outer side wall of the axial ring portion is used for abutting against the sealing hole wall of the mounting hole in a sealing mode, the axial ring portion can be supported by the axial frame body, the supporting strength of the axial ring portion is further improved, and the sealing performance between the axial ring portion and the outer seat can be further improved. The lip is used for holding tightly the pivot, the skeleton does not extend to can make in the radial portion has better elasticity, and then makes the lip can follow the pivot beat, has improved the lip with laminating degree between the pivot. Furthermore, the outer seal body is used for abutting against the end face of the outer seat, and can be pried when being disassembled, so that the whole oil seal for the gearbox can be disassembled from the outer seat, and the disassembling convenience is improved.

Drawings

Fig. 1 is a schematic structural view of an oil seal for a transmission according to the present invention;

fig. 2 is a partial detailed view of the oil seal for the transmission of the present invention.

Detailed Description

In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is provided in connection with the accompanying drawings.

As shown in fig. 1 and 2, an oil seal for a gearbox comprises an inner sealing body 100, an outer sealing body 200 and a framework 300; wherein, the first and the second end of the pipe are connected with each other,

the inner seal body 100 includes an axial ring portion 1 extending in the axial direction, a radial portion 2 connected to a lower end portion of the axial ring portion 1 and extending radially inward, and a lip portion 3 connected to an inner peripheral portion of the radial portion 2;

the frame 300 includes an axial frame body 4 extending in an axial direction and a radial frame body 5 extending in a radial direction;

the axial frame body 4 is embedded in the axial ring part 1;

the inner circumference of the radial frame body 5 is connected with the lower end of the axial frame body 4;

the outer circumferential portion of the radial frame body 5 is exposed outside the inner seal body 100;

the outer seal body 200 is connected to the outer circumferential portion of the radial frame body 5; in this embodiment, the inner seal body 100, the outer seal body 200, and the frame 300 are all ring-shaped structures.

Specifically, including outer seat 400 and a plurality of pivot 500 in the gearbox, be equipped with the mounting hole in the outer seat 400, the lateral wall of axial ring portion 1 be used for with the sealed butt of the pore wall of mounting hole, axial support body 4 can support axial ring portion 1, and then improves the support intensity of axial ring portion 1, and then can improve axial ring portion 1 with leakproofness between the outer seat 400. Lip 3 is used for holding tightly pivot 500, skeleton 300 does not extend to can make in the radial portion 2 has better elasticity, and then makes lip 3 can follow pivot 500 beat, has improved lip 3 with laminating degree between the pivot 500.

Further specifically, the outer seal body 200 is used for abutting against the end face of the outer seat 400, and when the outer seal body 200 is disassembled, the whole oil seal for the gearbox can be disassembled from the outer seat 400 by prying, so that the disassembly convenience is improved. The outer seal body 200 may be coupled to an outer circumferential portion of the radial skeleton 300 in a covering manner.

As shown in fig. 1 and 2, the lip 3 may include at least two lip bodies sequentially arranged from top to bottom; in this embodiment, there are two lip bodies, namely, an upper lip body 6 and a lower lip body 7, and a lubrication cavity 8 is formed between the upper lip body 6 and the lower lip body 7; in particular, the lubrication chamber 8 is used for storing grease.

As shown in fig. 1 and 2, the sealing direction of the upper lip body 6 and the sealing direction of the lower lip body 7 are both upward, and an assembly groove 9 which is arranged around the upper lip body 6 and used for installing an elastic member is arranged on the outer peripheral wall of the upper lip body 6; in particular, the elastic member may be a spring.

As shown in fig. 1 and 2, a lower end surface of the inner sealing body 100 is flush with a lower end surface of the outer sealing body 200, and a step portion 10 is provided on an outer peripheral portion of the outer sealing body 200; specifically, the step portion 10 is provided, so that the outer peripheral portion of the outer seal body 200 can be easily lifted when the outer seal body 200 is pried.

As shown in fig. 1 and 2, an upper ring groove 11 located above the radial frame body 5 and a lower ring groove 12 located below the radial frame body 5 are formed between the outer seal body 200 and the inner seal body 100, and the upper ring groove 11 and the lower ring groove 12 are provided for saving material.

In this embodiment, the inner seal 100 and the outer seal 200 are made of rubber, and the frame 300 is made of metal.

As shown in fig. 1 and 2, the upper end portion of the outer side wall of the axial ring portion 1 is provided with a tapered portion 13 which is tapered from bottom to top, and the tapered portion 13 is used for guiding the axial ring portion 1 to be inserted into the outer seat 400. In the present invention, the directions or positional relationships indicated by "upper", "lower", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the indicated device or element must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention.

The working principle of the utility model is as follows:

including outer seat 400 and a plurality of pivot 500 in the gearbox, be equipped with the mounting hole in the outer seat 400, the lateral wall of axial ring portion 1 be used for with the sealed butt of pore wall of mounting hole, axial support body 4 can support axial ring portion 1, and then improves the support intensity of axial ring portion 1, and then can improve axial ring portion 1 with leakproofness between the outer seat 400. Lip 3 is used for hugging closely pivot 500, skeleton 300 does not extend to can make in the radial portion 2 has better elasticity, and then makes lip 3 can follow pivot 500 beat, improved lip 3 with laminating degree between the pivot 500. Further, the outer seal body 200 is used for abutting against the end face of the outer seat 400, and when the outer seal body 200 is disassembled, the whole oil seal for the gearbox can be disassembled from the outer seat 400 by prying, so that the disassembly convenience is improved.

The above-mentioned embodiments further explain in detail the technical problems, technical solutions and advantages solved by the present invention, and it should be understood that the above only is a specific embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. An oil seal for a gearbox is characterized by comprising an inner sealing body (100), an outer sealing body (200) and a framework (300); wherein the content of the first and second substances,

the inner seal body (100) includes an axial ring portion (1) extending in the axial direction, a radial portion (2) connected to a lower end portion of the axial ring portion (1) and extending radially inward, and a lip portion (3) connected to an inner peripheral portion of the radial portion (2);

the framework (300) comprises an axial frame body (4) extending along the axial direction and a radial frame body (5) extending along the radial direction;

the axial frame body (4) is embedded in the axial ring part (1);

the inner peripheral part of the radial frame body (5) is connected with the lower end part of the axial frame body (4);

the outer peripheral part of the radial frame body (5) is exposed out of the inner sealing body (100);

the outer seal body (200) is connected to the outer peripheral portion of the radial frame body (5).

2. The oil seal for a transmission according to claim 1,

the lip part (3) comprises at least two lip bodies which are sequentially arranged from top to bottom.

3. The oil seal for a transmission according to claim 2,

the lip body is equipped with two, is last lip body (6) and lower lip body (7) respectively, go up lip body (6) with be formed with between the lower lip body (7) lubricated chamber (8).

4. An oil seal for a transmission according to claim 3,

the sealing direction of the upper lip body (6) and the sealing direction of the lower lip body (7) are both upward.

5. An oil seal for a transmission according to claim 3,

the outer peripheral wall of the upper lip body (6) is provided with an assembling groove (9) which surrounds the upper lip body (6) and is used for installing the elastic piece.

6. The oil seal for a transmission according to claim 1,

the lower end face of the inner sealing body (100) is flush with the lower end face of the outer sealing body (200).

7. The oil seal for a transmission according to claim 6,

a step part (10) is provided on the outer peripheral part of the outer seal body (200).

8. The oil seal for a transmission according to claim 1,

an upper ring groove (11) located above the radial frame body (5) and a lower ring groove (12) located below the radial frame body (5) are formed between the outer sealing body (200) and the inner sealing body (100).

9. The oil seal for a transmission according to claim 1,

the inner sealing body (100) and the outer sealing body (200) are made of rubber, and/or the framework (300) is made of metal.

10. The oil seal for a transmission according to claim 1,

the upper end part of the outer side wall of the axial ring part (1) is provided with a conical part (13) which is reduced from bottom to top.