CN216555253U - Thrust structure for thrust needle roller bearing end face of walking speed reducer - Google Patents
Thrust structure for thrust needle roller bearing end face of walking speed reducer Download PDFInfo
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- CN216555253U CN216555253U CN202123281567.5U CN202123281567U CN216555253U CN 216555253 U CN216555253 U CN 216555253U CN 202123281567 U CN202123281567 U CN 202123281567U CN 216555253 U CN216555253 U CN 216555253U
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Abstract
The utility model provides a thrust structure for walking reduction gear thrust bearing terminal surface, relates to walking reduction gear technical field for solve the more serious technical problem of wearing and tearing between the current walking reduction gear sun gear. In the thrust structure for the thrust needle roller bearing end face of the walking speed reducer, a first-stage planet carrier is connected with a first-stage planet gear through a first-stage planet shaft, the first-stage planet carrier is connected with a second-stage sun gear through a spline, and torque is transmitted to a first-stage inner gear ring through meshing between the first-stage sun gear and the first-stage planet gear; meanwhile, the first-stage planet carrier drives the second-stage sun gear to rotate so as to transmit torque; a baffle plate is adopted for axial limiting between the first-stage planet carrier and the first-stage sun gear, the baffle plate is in interference fit with the first-stage planet carrier, and a baffle plate and a thrust needle roller bearing are installed between the first-stage sun gear and the second-stage sun gear.
Description
Technical Field
The utility model relates to the technical field of walking speed reducers, in particular to a thrust structure for an end face of a thrust needle roller bearing of a walking speed reducer.
Background
The engineering machinery industry 'fourteen five' proposes that new progress in the aspects of intellectualization, greening, high-end and the like is made to promote high-quality development of the engineering machinery industry and to mainly develop key technologies, key parts and key process key projects and key work, and research, development and application popularization work of the common technology, the basic technology and scientific research result industrialization is continuously strengthened.
The walking speed reducer is an indispensable driving device for wheeled or crawler-type driven vehicles and other mobile equipment. With the continuous increase of the market of engineering machinery, the demand of the walking speed reducer with good stability and longer service life is also increased continuously.
At present, in a traditional engineering machinery walking speed reducer, axial positioning between sun gears depends on end faces of the sun gears, relative rotation exists between the end faces of two adjacent sun gears, and a bonding surface needs to be coated or hardened; the sun gear and the planet carrier are axially positioned by adopting the spring retainer ring for the shaft, and the positioning and transmission mode can cause the problems of abrasion of the end surface of the sun gear, poor axial positioning and the like in the use process.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a thrust structure for the thrust needle bearing end surface of a walking speed reducer, which is used for solving the technical problem that the abrasion between sun gears of the existing walking speed reducer is serious.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a thrust structure for a thrust needle bearing end face of a walk reducer, comprising: the first-stage planet carrier is connected with a first-stage planet wheel through a first-stage planet shaft, the first-stage planet carrier is connected with a second-stage sun wheel through a spline, and torque is transmitted to a first-stage inner gear ring through the meshing between the first-stage sun wheel and the first-stage planet wheel; meanwhile, the first-stage planet carrier drives the second-stage sun gear to rotate so as to transmit torque;
a baffle is adopted for axial limiting between the first-stage planet carrier and the first-stage sun gear, the baffle is in interference fit with the first-stage planet carrier, and the baffle and the thrust needle roller bearing are installed between the first-stage sun gear and the second-stage sun gear.
Specifically, the thrust needle roller bearing is installed between the first-stage sun gear and the second-stage sun gear, so that rolling friction is generated between the first-stage sun gear and the second-stage sun gear, and incomplete meshing between the first-stage sun gear and a gear of the first-stage planet gear can be avoided.
Compared with the prior art, the thrust structure for the thrust needle roller bearing end surface of the walking speed reducer has the following advantages:
in the thrust structure for the thrust needle roller bearing end surface of the walking speed reducer, the baffle is adopted for axial limiting between the first-stage planet carrier and the first-stage sun gear, the baffle is in interference fit with the first-stage planet carrier, and the baffle and the thrust needle roller bearing are installed between the first-stage sun gear and the second-stage sun gear.
Drawings
FIG. 1 is a schematic partial cross-sectional view of a thrust structure for an end face of a thrust needle bearing of a walking speed reducer according to an embodiment of the present invention;
fig. 2 is a partial enlarged sectional structural view of a thrust structure C for an end surface of a thrust needle bearing of a walking speed reducer according to an embodiment of the present invention.
Reference numerals:
1-a first stage planet carrier; 2-a second stage sun gear; 3-a first stage sun gear; 4-first stage planets; 5-first stage planet shaft; 6-first-stage annular gear; 7-a baffle plate; 8-thrust needle roller bearing.
Detailed Description
For the convenience of understanding, the thrust structure for the thrust needle bearing end surface of the walking speed reducer provided by the embodiment of the utility model is described in detail below with reference to the attached drawings of the specification.
An embodiment of the present invention provides a thrust structure for an end surface of a thrust needle bearing of a walking speed reducer, as shown in fig. 1 and 2, including: the planetary gear set comprises a first-stage planetary carrier 1, wherein the first-stage planetary carrier 1 is connected with a first-stage planetary gear 4 through a first-stage planetary shaft 5, the first-stage planetary carrier 1 is connected with a second-stage sun gear 2 through a spline, and torque is transmitted to a first-stage inner gear ring 6 through meshing between a first-stage sun gear 3 and the first-stage planetary gear 4; meanwhile, the first-stage planet carrier 1 drives the second-stage sun gear 2 to rotate so as to transmit torque;
baffle 7 is adopted to axial spacing between first order planet carrier 2 and first order sun gear 3, and baffle 7 and first order planet carrier 1 interference fit install baffle 7 and thrust bearing 8 between first order sun gear 3 and the second order sun gear 2.
Compared with the prior art, the thrust structure for the thrust needle roller bearing end surface of the walking speed reducer has the following advantages:
in the thrust structure for the thrust needle roller bearing end surface of the walking speed reducer provided by the embodiment of the utility model, the baffle 7 is adopted for axial limiting between the first-stage planet carrier 1 and the first-stage sun gear 3, the baffle 7 is in interference fit with the first-stage planet carrier 1, and the baffle 7 and the thrust needle roller bearing 8 are arranged between the first-stage sun gear 3 and the second-stage sun gear 2, so that the thrust structure for the thrust needle roller bearing end surface of the walking speed reducer provided by the embodiment of the utility model can effectively reduce the rotational friction between the left end surface of the first-stage sun gear 3 and the right end surface of the second-stage sun gear 2, thereby reducing the grinding treatment and surface hardening process of the contact end surface of the first-stage sun gear 3 and the second-stage sun gear 2, further effectively saving the cost, reducing the processing process and reducing the processing cost.
Specifically, as shown in fig. 1 and fig. 2, a thrust needle bearing 8 is installed between the first-stage sun gear 3 and the second-stage sun gear 2, so that rolling friction is generated between the first-stage sun gear 3 and the second-stage sun gear 2, thereby effectively reducing end surface wear between the first-stage sun gear 3 and the second-stage sun gear 2, and increasing axial positioning accuracy; and can be used for avoiding the incomplete meshing between the gears of the first-stage sun gear 3 and the first-stage planet gear 4, thereby effectively prolonging the service life of the gears and reducing the maintenance cost.
The thrust needle roller bearing 8 has good mechanical strength and bearing capacity, and the retainer has a certain oil storage function, so that the use reliability of the position is effectively improved.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (2)
1. A thrust structure for a thrust needle bearing end face of a walking speed reducer, comprising: the first-stage planet carrier is connected with a first-stage planet wheel through a first-stage planet shaft, the first-stage planet carrier is connected with a second-stage sun wheel through a spline, and torque is transmitted to a first-stage inner gear ring through the meshing between the first-stage sun wheel and the first-stage planet wheel; meanwhile, the first-stage planet carrier drives the second-stage sun gear to rotate so as to transmit torque;
a baffle is adopted for axial limiting between the first-stage planet carrier and the first-stage sun gear, the baffle is in interference fit with the first-stage planet carrier, and the baffle and the thrust needle roller bearing are installed between the first-stage sun gear and the second-stage sun gear.
2. The thrust structure for a thrust needle bearing end face of a walking reducer of claim 1, wherein the thrust needle bearing is installed between the first stage sun gear and the second stage sun gear so that rolling friction is generated between the first stage sun gear and the second stage sun gear and can be used for avoiding incomplete meshing between the gears of the first stage sun gear and the first stage planet gears.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123281567.5U CN216555253U (en) | 2021-12-24 | 2021-12-24 | Thrust structure for thrust needle roller bearing end face of walking speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123281567.5U CN216555253U (en) | 2021-12-24 | 2021-12-24 | Thrust structure for thrust needle roller bearing end face of walking speed reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216555253U true CN216555253U (en) | 2022-05-17 |
Family
ID=81555662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123281567.5U Active CN216555253U (en) | 2021-12-24 | 2021-12-24 | Thrust structure for thrust needle roller bearing end face of walking speed reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216555253U (en) |
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2021
- 2021-12-24 CN CN202123281567.5U patent/CN216555253U/en active Active
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