CN213871040U - Transmission output shaft protection structure - Google Patents
Transmission output shaft protection structure Download PDFInfo
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- CN213871040U CN213871040U CN202022721050.2U CN202022721050U CN213871040U CN 213871040 U CN213871040 U CN 213871040U CN 202022721050 U CN202022721050 U CN 202022721050U CN 213871040 U CN213871040 U CN 213871040U
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- output shaft
- transmission
- hole
- derailleur
- transmission output
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Abstract
The utility model discloses a derailleur output shaft protective structure, include and be connected the protection casing that is equipped with the through-hole with gearbox housing, the derailleur output shaft is followed the through-hole stretches out, and the external diameter of derailleur output shaft is less than the diameter of through-hole inside the protection casing, the cover is equipped with the oil blanket on the derailleur output shaft. The utility model discloses simple structure, installation and maintenance are all very convenient, and low in manufacturing cost, and the protective capacities is good.
Description
Technical Field
The utility model relates to the field of machinary, especially, relate to a derailleur output shaft protective structure.
Background
If the output shaft of the transmission of machinery and vehicles (such as agricultural machinery, beach vehicles, cross-country motorcycles, etc.) used in outdoor environment is directly exposed to the external silt environment, silt and the like can enter the transmission from the output shaft, and the service life of the transmission is affected. If install ordinary oil blanket in derailleur output shaft department, do not take other safeguard procedures, outside silt and other materials can be attached to on the output shaft, damage the oil blanket lip easily when making the output shaft rotatory, lead to the oil blanket to become invalid. In order to prevent the entrance of silt and other substances, the following protective measures are generally adopted in the prior art: firstly, the silt-proof oil seal is installed, although the silt-proof oil seal has certain effect, the structure of the silt-proof oil seal is complex, the cost is high, and the arrangement space is increased more; and secondly, the oil seal is internally arranged, and a bearing with a dustproof cover is adopted, but the protection capability is limited, and particularly, sewage easily enters the dustproof cover to corrode the bearing, so that the bearing is easily damaged.
Therefore, those skilled in the art are dedicated to develop a transmission output shaft protection structure with high protection capability.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned defect of prior art, the utility model aims to solve the technical problem that a derailleur output shaft protective structure that protective capacities is high is provided.
In order to realize the above object, the utility model provides a derailleur output shaft protective structure, include and be connected the protection casing that is equipped with the through-hole with the derailleur casing, the derailleur output shaft is followed the through-hole stretches out, and the external diameter of derailleur output shaft is less than the diameter of through-hole inside the protection casing, the cover is equipped with the oil blanket on the derailleur output shaft.
Preferably, the difference between the outer diameter of the transmission output shaft and the diameter of the through hole is within 1 mm.
Preferably, the distance between the inner bottom surface of the protective cover and the oil seal is more than or equal to 3 mm.
Preferably, the protective cover is in the shape of a disc with a convex middle part, and the through hole is located on the convex part.
Preferably, the shield is bolted to the transmission housing.
Preferably, a boss is arranged at one end of the protective cover on the transmission shell, and the outer side of the boss is a plane.
Preferably, the lower part of one side of the protective cover on the transmission housing is provided with a flow inlet of a flow discharge port, and an outlet of the flow discharge port is communicated with the outside of the transmission housing and communicated with the atmosphere.
The utility model has the advantages that: the utility model discloses simple structure, installation and maintenance are all very convenient, and low in manufacturing cost, and the protective capacities is good.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic top view of a protective cover according to an embodiment of the present invention.
Fig. 3 is a schematic cross-sectional view of a protective cover according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a transmission housing according to an embodiment of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples, wherein it is noted that, in the description of the invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular manner, and therefore should not be construed as limiting the present invention.
As shown in fig. 1 to 3, a transmission output shaft protective structure includes a protective cover 1 provided with a through hole 6 in connection with a transmission case 3. In this embodiment, the protective cover 1 is connected to the transmission housing 3 through the bolt 2, so that the sealing effect is achieved. The protective cover 1 is in the shape of a disc with a convex middle part, and the through hole 6 is positioned on the convex part. Derailleur output shaft 4 stretches out from through-hole 6, and the external diameter of derailleur output shaft 4 is less than the diameter of through-hole 6, and inside protection casing 1, the cover is equipped with oil blanket 5 on the derailleur output shaft 4. In this embodiment, the difference between the outer diameter of the output shaft 4 of the transmission and the diameter of the through hole 6 is within 1mm, so that the protective cover 1 does not interfere with the outer diameter of the output shaft 4, and a large amount of silt can be prevented from invading the position of the oil seal 5 through a gap.
In this application, certain distance need be stayed to the interior bottom surface 7 and the oil blanket 5 of protection casing 1, in this embodiment, the distance S more than or equal to 3mm of the interior bottom surface 7 and the oil blanket 5 of protection casing 1 to reach the direct purpose with the 5 lip contact of oil blanket of silt of preventing outside.
As shown in fig. 1 and 4, a boss 8 is provided on one end of the protective cover 1 on the transmission case 3, and the lower portion of the outer side of the boss 8 is a flat surface 9. In this embodiment, the boss 8 and the flat surface 9 can make the transmission housing 3 and the inner wall of the protection cover 1 cooperate, so that the whole body achieves the sealing effect. The outer diameter of the boss 8 is matched with the inner diameter of the protective cover 1, so that the positioning purpose is achieved. The transmission shell 3 is provided with a flow inlet of a flow discharge port 11 at one side of the protective cover 1, and an outlet of the flow discharge port 11 leads to the outside of the transmission shell 3 and is communicated with the atmosphere. In this embodiment, the inlet of the outlet 11 is arranged at the lower part of the boss 8 and the plane 9, the outlet of the outlet 11 is perpendicular to the inlet direction, and the outlet 11 can be used for removing a small amount of water and foreign matters invading into the cavity formed by the protective cover 1 and the transmission housing 3.
The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.
Claims (7)
1. The utility model provides a derailleur output shaft protective structure which characterized by: including being connected protection casing (1) that is equipped with through-hole (6) with derailleur casing (3), derailleur output shaft (4) are followed through-hole (6) stretch out, and the external diameter of derailleur output shaft (4) is less than the diameter of through-hole (6) inside protection casing (1), the cover is equipped with oil blanket (5) on derailleur output shaft (4).
2. The transmission output shaft protective structure according to claim 1, characterized in that: the difference between the outer diameter of the transmission output shaft (4) and the diameter of the through hole (6) is within 1 mm.
3. The transmission output shaft protective structure according to claim 1, characterized in that: the distance (S) between the inner bottom surface (7) of the protective cover (1) and the oil seal (5) is more than or equal to 3 mm.
4. The transmission output shaft protective structure according to claim 1, characterized in that: the protective cover (1) is in a disc shape with the middle part protruding, and the through hole (6) is located on the protruding part.
5. The transmission output shaft protective structure according to claim 1, characterized in that: the protective cover (1) is connected to the transmission shell (3) through a bolt (2).
6. The transmission output shaft protective structure according to claim 1, characterized in that: a boss (8) is arranged at one end of the protective cover (1) on the transmission shell (3), and a plane (9) is arranged on the outer side of the boss (8).
7. The transmission output shaft protective structure according to claim 1, characterized in that: and a flow inlet of a flow discharge port (11) is formed in the lower part of one side of the protective cover (1) on the transmission shell (3), and an outlet of the flow discharge port (11) leads to the outside of the transmission shell (3) and is communicated with the atmosphere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022721050.2U CN213871040U (en) | 2020-11-23 | 2020-11-23 | Transmission output shaft protection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022721050.2U CN213871040U (en) | 2020-11-23 | 2020-11-23 | Transmission output shaft protection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213871040U true CN213871040U (en) | 2021-08-03 |
Family
ID=77036190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022721050.2U Active CN213871040U (en) | 2020-11-23 | 2020-11-23 | Transmission output shaft protection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213871040U (en) |
-
2020
- 2020-11-23 CN CN202022721050.2U patent/CN213871040U/en active Active
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