CN214092985U - Transfer case seal structure, transfer case and engineering machine tool for engineering machine tool - Google Patents

Abstract

The utility model discloses a transfer case sealing structure for engineering machinery, a transfer case and engineering machinery, which comprises a bearing cover, a framework oil seal, a shaft sleeve, a dust cover and a connecting flange; the shaft sleeve is arranged on the output shaft, the shaft sleeve cover is arranged on the shaft sleeve, and the framework oil seal is arranged in the shaft sleeve cover; the connecting flange is arranged on the output shaft, the dust cover is arranged between the shaft sleeve and the connecting flange, a groove is formed in the bearing cover, and the dust cover is embedded in the groove; and a fastener is arranged at the end part of the output shaft and used for axially limiting the connecting flange and the shaft sleeve. The utility model discloses the effectual solution leads to the condition that the transfer case became invalid because transfer case output shaft department oil leak.

Description

Transfer case seal structure, transfer case and engineering machine tool for engineering machine tool

Technical Field

The utility model belongs to the technical field of the transfer case, concretely relates to use seal structure on transfer case.

Background

The transfer case for the engineering machinery has the working conditions of high rotating speed, high working temperature and long working time, so that the oil leakage condition often occurs, and the transfer case is very quick once the oil leakage is damaged. And what is more is the oil leak of skeleton oil blanket department, because transfer case operational environment is many silt, and the friction fast with the skeleton oil blanket behind the tiny particle entering skeleton oil blanket's lip, the skeleton oil blanket will become invalid soon.

Disclosure of Invention

The utility model aims at providing a seal structure of transfer case for engineering machine tool, effectual solution is because transfer case output shaft department oil leak leads to the condition that the transfer case became invalid.

The utility model discloses realize according to following technical scheme:

a transfer case sealing structure for engineering machinery comprises a bearing cover, a framework oil seal, a shaft sleeve, a dust cover and a connecting flange; the shaft sleeve is arranged on the output shaft, the shaft sleeve cover is arranged on the shaft sleeve, and the framework oil seal is arranged in the shaft sleeve cover; the connecting flange is arranged on the output shaft, the dust cover is arranged between the shaft sleeve and the connecting flange, a groove is formed in the bearing cover, and the dust cover is embedded in the groove; and a fastener is arranged at the end part of the output shaft and used for axially limiting the connecting flange and the shaft sleeve.

Further, the fastener comprises a large nut and a sealing retainer ring; the sealing retainer ring is sleeved on the output shaft and is fastened by screwing the large nut.

Furthermore, an O-shaped ring I is arranged between the shaft sleeve and the output shaft;

furthermore, an O-shaped ring II is arranged between the connecting flange and the sealing retainer ring.

Further, the connecting flange is connected with the output shaft through a spline.

Furthermore, plane sealant is coated among the shaft sleeve, the dust cover and the connecting flange.

Further, thread fastening glue is smeared between the large nut and the output shaft.

A transfer case is provided with the transfer case sealing structure for the engineering machinery.

An engineering machine is provided with the transfer case.

The utility model discloses beneficial effect:

the utility model adds the dustproof cover, and the dustproof cover is used for preventing silt from entering the lip; in addition, the utility model adds the shaft sleeve, because the matching position of the framework oil seal has higher requirement on the surface roughness, the structure of the output shaft is complex, the requirement of the framework oil seal is difficult to process, and if the fault occurs, the replacement cost is higher, the shaft sleeve is easy to process the requirement of the surface roughness, and the shaft sleeve has simple structure and lower replacement cost; and again, the utility model discloses two O shape circles have been increased to paint sealed glue through the assembling process, thereby realized twice seal structure, even one of them became invalid, still can continue to use.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

In the drawings:

FIG. 1 is a front view of a sealing structure of a transfer case for construction machinery of the present invention;

FIG. 2 is a detailed view of the shaft sleeve of the present invention;

FIG. 3 is a detailed view of the connecting flange of the present invention;

in the drawings, there is shown: 1. the device comprises an output shaft, 2O-shaped rings I and 3, a bearing cover, 4, a framework oil seal, 5, a shaft sleeve, 6, a dust cover, 7, a connecting flange, 8, O-shaped rings II and 9, a sealing retainer ring, 10 and a large nut.

It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept by those skilled in the art with reference to specific embodiments.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments, and the following embodiments are used for illustrating the present invention, but do not limit the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations 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 device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1, 2 and 3, the transfer case sealing structure for the engineering machinery comprises a bearing cover 3, a framework oil seal 4, a shaft sleeve 5, a dust cover 6 and a connecting flange 7; the shaft sleeve 5 is arranged on the output shaft 1, the shaft sleeve cover 3 is arranged on the shaft sleeve 5, and the framework oil seal 4 is arranged in the shaft sleeve cover 3; the connecting flange 7 is arranged on the output shaft 1, the dust cover 6 is arranged between the shaft sleeve 5 and the connecting flange 7, a groove is arranged on the bearing cover 3, and the dust cover 6 is embedded in the groove; and a fastening piece is arranged at the end part of the output shaft 1 and used for axially limiting the connecting flange 7 and the shaft sleeve 5.

The following is a preferred embodiment of the above embodiment with respect to the fastener:

the fastener comprises a large nut 10 and a sealing retainer ring 9; the sealing retainer ring 9 is sleeved on the output shaft 1 and is fastened by screwing the large nut 10.

As the utility model discloses an optimization scheme: an O-shaped ring I2 is arranged between the shaft sleeve 5 and the output shaft 1.

As the utility model discloses an optimization scheme: an O-shaped ring II 8 is arranged between the connecting flange 7 and the sealing retainer ring 9.

The coupling flange 7 and the output shaft 1 are connected by splines. As the utility model discloses an optimization scheme: and plane sealant is coated among the connection of the shaft sleeve 5, the dust cover 6 and the connecting flange 7.

As the utility model discloses an optimization scheme: and thread fastening glue is smeared between the large nut 10 and the output shaft 1.

The assembly process is as follows: the shaft sleeve 5 provided with the O-shaped ring I2 is arranged on the output shaft 1, the dust cover 6 is arranged between the shaft sleeve 5 and the connecting flange 7, the connecting flange 7 is connected with the output shaft 1 through a spline, the O-shaped ring II 8 is arranged on the connecting flange 7, and then the sealing check ring 9 and the large nut 10 are arranged. When the shaft sleeve 5, the dust cover 6 and the connecting flange 7 are installed, a plane sealant needs to be coated, and a thread fastening glue needs to be coated when the large nut 10 is installed.

In summary, in the conventional structure, the framework oil seal is directly matched with the output shaft, on one hand, the requirement on the surface roughness of the matching part of the output shaft by the framework oil seal is very high, the structure of the output shaft is complex, the processing difficulty is high, the shaft sleeve is relatively simple to process, and the requirement on the surface roughness by the framework oil seal is easily met, so that the service life of the framework oil seal can be prolonged by increasing the design of the shaft sleeve; on the other hand, because the rotational friction of long-time output shaft and skeleton oil blanket, appear output shaft cooperation department easily and appear the dent to lead to the condition of oil leak, if change output shaft cost is great this moment, and axle sleeve simple structure, the replacement cost is lower.

2. The whole structure forms a sealed cavity through the action of the two O-shaped rings and the plane sealing glue, once the O-shaped ring I in the shaft sleeve is damaged due to long-time use, the oil leakage condition is caused, and the whole structure is sealed, so that the lubricating oil is sealed by the O-shaped ring II, the oil leakage risk is reduced, and the service life of the whole machine is prolonged.

3. Bearing cap and dust cover cooperation department have a recess, and in the recess of dust cover embedding bearing cap, can block entering skeleton oil blanket cooperation department such as silt, stone like this, reduce the risk of lip damage, improve the life of skeleton oil blanket.

The utility model also discloses a transfer case installs foretell transfer case seal structure for engineering machine tool.

The utility model also discloses an engineering machine tool installs foretell transfer case.

In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

Furthermore, those skilled in the art will appreciate that although some embodiments described herein include some features included in other embodiments instead of others, combinations of features of different embodiments are also meant to be within the scope of the invention and form different embodiments. For example, in the above embodiments, those skilled in the art can use the combination according to the known technical solutions and technical problems to be solved by the present application.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and although the present invention has been disclosed with reference to the above preferred embodiment, but not to limit the present invention, any person skilled in the art can make modifications or changes to equivalent embodiments by utilizing the above technical contents without departing from the scope of the present invention, and any simple modification, equivalent change and modification made to the above embodiments by the technical matters of the present invention are within the scope of the present invention.

Claims (9)

1. The utility model provides a transfer case seal structure for engineering machine tool which characterized in that:

the device comprises a bearing cover, a framework oil seal, a shaft sleeve, a dust cover and a connecting flange;

the shaft sleeve is arranged on the output shaft, the shaft sleeve cover is arranged on the shaft sleeve, and the framework oil seal is arranged in the shaft sleeve cover;

the connecting flange is arranged on the output shaft, the dust cover is arranged between the shaft sleeve and the connecting flange, a groove is formed in the bearing cover, and the dust cover is embedded in the groove;

and a fastener is arranged at the end part of the output shaft and used for axially limiting the connecting flange and the shaft sleeve.

2. The transfer case seal structure for construction machinery according to claim 1, characterized in that:

the fastener comprises a large nut and a sealing retainer ring;

the sealing retainer ring is sleeved on the output shaft and is fastened by screwing the large nut.

3. The transfer case seal structure for construction machinery according to claim 1, characterized in that:

an O-shaped ring I is arranged between the shaft sleeve and the output shaft.

4. The transfer case seal structure for construction machinery according to claim 3, characterized in that:

and an O-shaped ring II is arranged between the connecting flange and the sealing retainer ring.

5. The transfer case seal structure for construction machinery according to claim 1, characterized in that:

the connecting flange is connected with the output shaft through a spline.

6. The transfer case seal structure for construction machinery according to claim 1, characterized in that:

and a plane sealant is coated among the shaft sleeve, the dust cover and the connecting flange.

7. The transfer case seal structure for construction machinery according to claim 2, characterized in that:

and thread fastening glue is smeared between the large nut and the output shaft.

8. A transfer case, characterized by:

a transfer case seal structure for construction machinery according to any one of claims 1 to 7 is mounted.

9. A construction machine characterized in that:

a transfer case according to claim 8 is installed.

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