CN212251069U - Limit and seal structure and engineering machine tool transaxle of wheel limit planet axle - Google Patents
Limit and seal structure and engineering machine tool transaxle of wheel limit planet axle Download PDFInfo
- Publication number
- CN212251069U CN212251069U CN202020859607.6U CN202020859607U CN212251069U CN 212251069 U CN212251069 U CN 212251069U CN 202020859607 U CN202020859607 U CN 202020859607U CN 212251069 U CN212251069 U CN 212251069U
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- planet
- shaft
- wheel
- limit
- axle
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- 239000000969 carrier Substances 0.000 claims abstract description 38
- 230000000670 limiting Effects 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 14
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 230000000694 effects Effects 0.000 description 6
- 230000004048 modification Effects 0.000 description 3
- 238000006011 modification reaction Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000003287 optical Effects 0.000 description 1
- 230000000149 penetrating Effects 0.000 description 1
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Abstract
The utility model discloses a limiting and sealing structure of a wheel-side planet shaft and an engineering machinery driving axle, wherein the limiting and sealing structure of the wheel-side planet shaft comprises a planet carrier, a planet wheel assembly and a planet shaft; the inner ring of the planet carrier is provided with a step surface, the planet shaft is of a stepped shaft structure, and the step surface of the planet carrier plays a role in limiting the planet shaft in the process of assembling the planet shaft into the planet carrier; the planet wheel assembly is assembled at the small end of the planet shaft and fixed on the planet shaft through the planet cover to realize the limiting effect on the planet wheel assembly; and a connecting part is arranged between the planet cover and the planet shaft and used for locking the planet shaft and the planet cover into a whole to prevent the planet cover from rotating along with the planet wheel in the planet wheel assembly. The utility model discloses make the planet axle simpler in the assembling process, and the assembly precision is high, spacing part prevents that the planet axle from taking place the axial float easily in the course of the work, improves whole planetary gear train work efficiency.
Description
Technical Field
The utility model relates to a be applied to spacing and seal structure of engineering machine tool transaxle wheel limit planet axle.
Background
At present, among the engineering machine tool transaxle rim structure, the planet axle generally is cylindrical optical axis, and does not have limit structure in the assembling process, and the rim is sealed mainly to rely on the interference fit between planet axle and the planet carrier to seal, and this kind of rim structure has following shortcoming: (1) the planet shaft has no limit in the assembling process, is difficult to assemble and has low assembling precision. (2) Because no limit exists, the assembled planetary shaft is easy to axially float in the working process, and the normal work of the whole planetary gear train is influenced. (3) Only rely on the interference fit between planet axle and the planet carrier to seal, sealed effect is not good, has the oil leak risk.
Disclosure of Invention
The utility model aims at providing a spacing and seal structure of wheel limit planet axle for solve the not enough of prior art existence.
The utility model discloses realize according to following technical scheme:
a limit and seal structure of a wheel-side planet shaft comprises a planet carrier, a planet wheel assembly and a planet shaft;
the inner ring of the planet carrier is provided with a step surface, the planet shaft is of a stepped shaft structure, and the step surface of the planet carrier plays a role in limiting the planet shaft in the process of assembling the planet shaft into the planet carrier; the planet wheel assembly is assembled at the small end of the planet shaft and fixed on the planet shaft through the planet cover to limit the planet wheel assembly; be equipped with adapting unit between planet lid and the planet axle for lock planet axle and planet lid into a whole, prevent that the planet lid from following the planet wheel in the planet wheel assembly and rotating together.
Further, the connecting component is a pin; the planet axle small end face is equipped with pinhole I, be equipped with on the planet lid cooperation face with pinhole I endocentric pinhole II, the pin is installed in pinhole I and pinhole II.
Furthermore, a threaded hole is formed in the center of the small end face of the planet shaft, a through hole is formed in the center of the planet cover, a bolt penetrates into the threaded hole of the planet shaft from the through hole of the planet cover and is screwed, and the planet cover is fixed to the small end of the planet shaft.
Further, the planet wheel assembly comprises a planet wheel, a spacer bush and a roller pin; the planet wheel is rotatably supported on the planet shaft through the needle rollers, and the needle rollers are positioned on two sides of the spacer bush.
Further, the planet shaft and the planet carrier are assembled in an interference fit mode.
Furthermore, an O-shaped ring groove is formed in the planet carrier located on the large end face of the planet shaft, an O-shaped ring is assembled in the O-shaped ring groove, and then the O-shaped ring is pressed tightly through an end cover, so that oil leakage is further prevented.
Further, a gasket is assembled at the small end of the planet shaft, and the gasket is arranged between the planet wheel assembly and the planet carrier.
The utility model provides an engineering machine tool transaxle, installs foretell limit and seal structure of wheel limit planet axle.
The utility model discloses beneficial effect:
the planet shaft is designed into a stepped shaft structure, and the step surface of the planet carrier plays a limiting role in the process of being assembled into the planet carrier, so that the assembly precision of the planet shaft can be ensured; because the pin is partially embedded into the planet shaft and partially embedded into the pin hole of the planet cover, the planet cover and the planet shaft can be connected into a whole, and the planet cover is prevented from rotating along with the planet wheel; the planet cover is fixed at the small end of the planet shaft by bolts, and can play a certain limiting role on the planet wheel assembly to prevent the planet wheel from being separated from the planet shaft in the rotation process. An O-shaped ring groove is designed on the planet carrier, the O-shaped ring is assembled, then an end cover is assembled to tightly press the O-shaped ring, oil can be prevented from leaking from the planet shaft, a double sealing effect is achieved on the basis of interference fit of the planet shaft and the planet carrier, and the sealing effect is good.
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 structural view of the present invention.
In the figure 1, a planet wheel 1, a spacer bush 2, a needle roller 3, a planet cover 4, a pin 5, a bolt 6, a gasket 7, a planet shaft 8, a planet carrier 9, an end cover 10 and an O-shaped ring 11 are arranged.
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, a limiting and sealing structure of a wheel-side planet shaft comprises a planet carrier 9, a planet wheel assembly and a planet shaft 8; a step surface is arranged in an inner ring of the planet carrier 9, the planet shaft 8 is of a stepped shaft structure, and the step surface of the planet carrier 9 plays a role in limiting the planet shaft 8 in the process of assembling the planet shaft 8 into the planet carrier 9; the planet wheel assembly is assembled at the small end of the planet shaft 8 and fixed on the planet shaft 8 through the planet cover 4 to realize the limiting effect on the planet wheel assembly; a connecting part is arranged between the planetary cover 4 and the planetary shaft 8 and is used for locking the planetary shaft 8 and the planetary cover 4 into a whole to prevent the planetary cover 4 from rotating together with the planetary wheel 1 in the planetary wheel assembly.
A preferred embodiment of the above embodiment with respect to the connecting member is given below:
the connecting part is a pin 5; the small end face of the planet shaft 8 is provided with a pin hole I, the matching surface of the planet cover 4 is provided with a pin hole II concentric with the pin hole I, and the pin 5 is arranged in the pin hole I and the pin hole II.
A preferred embodiment of the above embodiment is given below with respect to the planetary cover connection:
the center of the small end face of the planet shaft 8 is provided with a threaded hole, the center of the planet cover 4 is provided with a through hole, a bolt 6 penetrates into the threaded hole of the planet shaft 8 from the through hole of the planet cover 4 and is screwed, and the planet cover 4 is fixed at the small end of the planet shaft 8.
With continued reference to fig. 1, the planetary gear assembly includes a planetary gear 1, a spacer 2, and a needle roller 3; the planet wheel 1 is rotatably supported on a planet shaft 8 through a roller pin 3, and the roller pin 3 is positioned at two sides of the spacer bush 2.
Further scheme: the small end of the planet shaft 8 is provided with a gasket 7, and the gasket 7 is arranged between the planet wheel assembly and the planet carrier 9.
With continued reference to fig. 1, the planet carrier 9 at the large end face of the planet shaft 8 is provided with an O-ring groove, and an O-ring 11 is fitted in the O-ring groove and then pressed by an end cover 10 to further prevent leakage of oil.
Further scheme: the planet shaft 8 and the planet carrier 9 are assembled in an interference fit mode.
The utility model discloses assembly flow is roughly as follows:
the step-shaped planet shaft 8 is firstly pressed into the planet carrier 9 from the arrow direction in fig. 1, the step surface of the planet carrier 9 plays a limiting role in the pressing process of the step-shaped planet shaft 8, and the planet shaft 8 is assembled in place at the moment. Assembling a gasket 7 from the outer circle of the small end of the planet shaft 8, assembling a planet wheel assembly (comprising a planet wheel 1, a spacer bush 2 and a roller pin 3), designing a pin hole I on the small end face of the planet shaft 8, designing a pin hole II on the end face of the planet cover 4 correspondingly, after the pin 5 is installed, connecting the planet shaft 8 and the planet cover 4 into a whole by the pin 5, penetrating a bolt 6 from the central through hole of the planet cover, screwing a central threaded hole of the planet shaft 8, and fixing the planet cover 4.
Because the utility model adopts the above structure, the design is paird with planet axle 8 step face to 9 step faces of planet carrier, and in 8 assembling process of planet axle, 9 step faces of planet carrier played limiting displacement in the face of 8 planet axles, had both guaranteed the precision of assembly, can prevent 8 axial float of planet axle again.
The planet cover 4 has a limiting effect on the planet wheel assembly and prevents the planet wheel 1 from separating from the planet shaft 8 in the rotation process; the pin 5 connects the planetary cover and the planetary shaft into a whole and can prevent the planetary cover 4 from rotating caused by the rotation of the planetary wheel 1.
At the other end, an O-shaped ring groove is designed at the position where the planet shaft is arranged on the planet carrier 9, the O-shaped ring 11 is assembled, and the O-shaped ring is tightly pressed by the end cover 10, so that the leakage of oil can be further prevented, a double sealing effect is achieved on the basis of interference fit of the planet shaft 8 and the planet carrier 9, and the sealing effect is good.
The utility model also provides an engineering machine tool transaxle installs foretell wheel limit planet axle spacing and seal structure.
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 (8)
1. The utility model provides a spacing and seal structure of wheel limit planet axle which characterized in that:
comprises a planet carrier, a planet wheel assembly and a planet shaft;
the inner ring of the planet carrier is provided with a step surface, the planet shaft is of a stepped shaft structure, and the step surface of the planet carrier plays a role in limiting the planet shaft in the process of assembling the planet shaft into the planet carrier;
the planet wheel assembly is assembled at the small end of the planet shaft and fixed on the planet shaft through the planet cover to limit the planet wheel assembly;
be equipped with adapting unit between planet lid and the planet axle for lock planet axle and planet lid into a whole, prevent that the planet lid from following the planet wheel in the planet wheel assembly and rotating together.
2. The limit and seal structure of a wheel planet axle according to claim 1, characterized in that:
the connecting part is a pin;
the planet axle small end face is equipped with pinhole I, be equipped with on the planet lid cooperation face with pinhole I endocentric pinhole II, the pin is installed in pinhole I and pinhole II.
3. The limit and seal structure of a wheel planet axle according to claim 1, characterized in that:
the center of the small end face of the planet shaft is provided with a threaded hole, the center of the planet cover is provided with a through hole, and a bolt penetrates into the threaded hole of the planet shaft from the through hole of the planet cover to fix the planet cover at the small end of the planet shaft.
4. The limit and seal structure of a wheel planet axle according to claim 1, characterized in that:
the planet wheel assembly comprises a planet wheel, a spacer bush and a roller pin;
the planet wheel is rotatably supported on the planet shaft through the needle rollers, and the needle rollers are positioned on two sides of the spacer bush.
5. The limit and seal structure of a wheel planet axle according to claim 1, characterized in that:
the planet shaft and the planet carrier are assembled in an interference fit mode.
6. The limit and seal structure of a wheel planet axle according to claim 1, characterized in that:
an O-shaped ring groove is formed in the planet carrier located on the large end face of the planet shaft, an O-shaped ring is assembled in the O-shaped ring groove, and then the O-shaped ring is pressed tightly through an end cover, so that oil leakage is further prevented.
7. The limit and seal structure of a wheel planet axle according to claim 1, characterized in that:
the planet axle tip is equipped with the gasket, and this gasket setting is between planet wheel assembly and planet carrier.
8. An engineering machinery drive axle is characterized in that:
a spacing and sealing structure provided with a hub planet axle according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020859607.6U CN212251069U (en) | 2020-05-21 | 2020-05-21 | Limit and seal structure and engineering machine tool transaxle of wheel limit planet axle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020859607.6U CN212251069U (en) | 2020-05-21 | 2020-05-21 | Limit and seal structure and engineering machine tool transaxle of wheel limit planet axle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212251069U true CN212251069U (en) | 2020-12-29 |
Family
ID=73976640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020859607.6U Active CN212251069U (en) | 2020-05-21 | 2020-05-21 | Limit and seal structure and engineering machine tool transaxle of wheel limit planet axle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212251069U (en) |
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2020
- 2020-05-21 CN CN202020859607.6U patent/CN212251069U/en active Active
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