CN223483368U

CN223483368U - Independent installation and lubrication structure of speed reducer bearing

Info

Publication number: CN223483368U
Application number: CN202520012209.3U
Authority: CN
Inventors: 李思诚; 张广杰; 胡迪
Original assignee: Zhuzhou Gear Co Ltd
Current assignee: Zhuzhou Gear Co Ltd
Priority date: 2025-01-03
Filing date: 2025-01-03
Publication date: 2025-10-28
Anticipated expiration: 2035-01-03

Abstract

The structure for independently mounting and lubricating reducer bearings includes a reducer housing, a gear shaft mounted in the housing, and a bearing mounted on the gear shaft. The structure is characterized in that a bearing seat is fixed to the housing and communicates with the housing's inner cavity, the end of the gear shaft extends into the bearing seat, the bearing is mounted between the bearing seat and the gear shaft, and a seal is pressed between the gear shaft and the housing to seal the bearing seat's inner cavity from the housing's inner cavity. The utility model can provide independent lubrication for the bearings, ensuring sufficient lubrication of the bearings, improving the bearing's lubrication reliability, improving the positioning reliability of the bearing's outer ring, reducing the probability of creep of the bearing's outer ring during reducer operation, reducing the bearing's wear rate, and extending the bearing's service life, thereby reducing the reducer's failure rate and improving the reducer's operational reliability.

Description

Independent installation and lubrication structure of speed reducer bearing

Technical Field

The utility model relates to an independent mounting and lubricating structure of a reducer bearing, which is used for mounting and lubricating a gear shaft end bearing in a reducer.

Background

The speed reducer comprises a gear shaft, a speed reducer shell, a bearing chamber, a bearing, a low-viscosity lubricating oil film, an oil film and an oil film, wherein the bearing chamber corresponding to the gear shaft is arranged on the speed reducer shell, the bearing chamber is pressed in the bearing chamber to support the gear shaft, the bearing is difficult to reach the position of the bearing by virtue of splashed lubricating oil, the bearing is not lubricated sufficiently, an oil collecting groove is arranged on the speed reducer shell to improve the lubricating effect of the bearing, the bearing chamber is communicated with the oil collecting groove by an oil duct, the splashed oil is collected by the oil collecting groove and is guided into the bearing chamber by the oil duct to lubricate the bearing, so that the lubricating efficiency of the bearing can be improved, the risk that the bearing cannot be lubricated in place still exists when the oil level in the speed reducer is reduced, and the speed reducer adopts the low-viscosity lubricating oil in order to pursue the transmission efficiency, but the adhesion capability of the low-viscosity lubricating oil film is poor, the oil film is easier to break, and the abrasion rate of the bearing is higher. In order to improve the bearing capacity, the deep groove ball bearing is assembled on the gear shaft generally, the deep groove ball bearing is assembled in a tight and loose assembling mode, the outer interference quantity of the bearing outer ring and the bearing chamber is small, the problem of creeping of the bearing outer ring is inevitably caused in the running process of the speed reducer, the abrasion of the bearing is accelerated, and the service life of the bearing is shortened.

Disclosure of utility model

The independent mounting and lubricating structure for the bearing of the speed reducer provided by the utility model forms independent lubrication for the bearing, ensures full lubrication for the bearing, improves the lubrication reliability of the bearing, improves the positioning reliability of the outer ring of the bearing, reduces the probability of creeping of the outer ring of the bearing in the running process of the speed reducer, reduces the wear rate of the bearing, prolongs the service life of the bearing, and further reduces the failure rate of the speed reducer and improves the running reliability of the speed reducer.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the independent mounting and lubricating structure of the reducer bearing comprises a shell of the reducer, a gear shaft arranged in the shell and a bearing assembled on the gear shaft, and is characterized in that a bearing seat communicated with an inner cavity of the shell is fixed on the shell, the end part of the gear shaft extends into the bearing seat, the bearing is assembled between the bearing seat and the gear shaft, and a sealing element is pressed between the gear shaft and the shell to seal and separate the inner cavity of the bearing seat from the inner cavity of the shell.

Preferably, the shell is provided with an assembly convex ring corresponding to the bearing seat, the inner end of the bearing seat is integrally formed with a connecting ring propped against the assembly convex ring, the connecting ring is fastened on the assembly convex ring through bolts, the end part of the gear shaft is provided with a bearing positioning surface propped against the inner end of the bearing, and the inner end surface of the bearing is propped against the bearing positioning surface.

Preferably, the inner end surface of the bearing seat extends into the assembly convex ring, an annular positioning surface axially aligned with the inner end surface of the bearing seat is formed on the shell, the gear shaft is integrally formed with the inner convex ring which is positioned in the bearing and radially aligned with the assembly convex ring, the sealing element is pressed between the assembly convex ring and the inner convex ring, one end of the sealing element is propped against the inner end surface of the bearing seat, and the other end of the sealing element is propped against the annular positioning surface.

Preferably, the inner end surface of the bearing seat is separated from the end surface of the gear shaft and is not contacted with the end surface of the gear shaft, an oil filling hole communicated with the inner cavity of the bearing seat is formed in the center of the bearing seat, and the oil filling hole is sealed through a screw plug.

Preferably, the sealing element is a framework oil seal.

The beneficial effects of the utility model are as follows:

According to the independent mounting and lubricating structure of the speed reducer bearing, the bearing seat is fixed on the shell, the bearing is mounted in the bearing seat, the gear shaft extends into the bearing seat to be matched with the bearing, the inner cavity of the bearing seat and the inner cavity of the shell are sealed and separated by the sealing piece, lubricating oil or lubricating grease with higher viscosity and better lubricating performance can be independently filled in the inner cavity of the bearing seat to form independent lubrication of the bearing, the bearing is fully lubricated, the lubricating reliability of the bearing is improved, the bearing is mounted between the bearing seat and the gear shaft, the bearing is pressed in the bearing seat firstly, and then the bearing seat and the bearing are mounted on the gear shaft through hot mounting, so that the inner tightness and the outer tightness are avoided, the interference between the outer ring of the bearing and the bearing seat is effectively improved, the positioning reliability of the outer ring of the bearing is improved, the probability of creeping of the outer ring of the bearing in the running process of the speed reducer is reduced, the wear rate of the bearing is reduced, the service life of the bearing is prolonged, and the failure rate of the speed reducer is reduced, and the running reliability of the speed reducer is improved.

Drawings

Fig. 1 is a schematic view of the independent mounting and lubrication structure of the reducer bearing of the present utility model.

Fig. 2 is an enlarged partial schematic view of fig. 1.

Detailed Description

Embodiments of the present utility model are described in detail below with reference to fig. 1-2.

The independent installation and lubrication structure of the reducer bearing comprises a shell 1 of the reducer, a gear shaft 2 arranged in the shell 1 and a bearing 3 assembled on the gear shaft 2, and is characterized in that a bearing seat 4 communicated with an inner cavity of the shell is fixed on the shell 1, the end part of the gear shaft 1 stretches into the bearing seat 4, the bearing 3 is assembled between the bearing seat 4 and the gear shaft 2, and a sealing piece 5 is pressed between the gear shaft 2 and the shell 1 to seal the inner cavity of the bearing seat and the inner cavity of the shell.

According to the independent mounting and lubricating structure of the reducer bearing, the bearing seat 4 is fixed on the shell 1, the bearing 3 is mounted in the bearing seat 4, the gear shaft 2 stretches into the bearing seat 4 to be matched with the bearing 3, the inner cavity of the bearing seat and the inner cavity of the shell are sealed and separated by the sealing piece 5, lubricating oil or lubricating grease with higher viscosity and better lubricating property can be independently filled in the inner cavity of the bearing seat, independent lubrication of the bearing 3 is formed, sufficient lubrication of the bearing is guaranteed, the lubrication reliability of the bearing is improved, the bearing 3 is assembled between the bearing seat 4 and the gear shaft 2, the bearing 3 can be pressed in the bearing seat 4 firstly, then the bearing seat 4 and the bearing 3 are assembled on the gear shaft 2 through hot-assembling, the interference between the bearing outer ring and the bearing seat 4 is avoided, the positioning reliability of the bearing outer ring is improved, the probability of creeping of the bearing outer ring in the running process of the reducer is reduced, the wear rate of the bearing is reduced, the service life of the bearing is prolonged, the failure rate of the reducer is reduced, and the running reliability of the reducer is improved.

The housing 1 is provided with an assembly convex ring 11 corresponding to the bearing seat 4, the inner end of the bearing seat 4 is integrally formed with a connecting ring 41 propped against the assembly convex ring 11, the connecting ring 41 is fastened on the assembly convex ring 11 through bolts, the end part of the gear shaft 2 is provided with a bearing positioning surface 21 propped against the inner end of the bearing 3, and the inner end surface of the bearing is propped against the bearing positioning surface 21. The assembly convex ring 11 and the connecting ring 41 fix the bearing seat 4 on the shell 1 through bolt fastening, and when the bearing 3 is pressed on the gear shaft 2, the inner end surface of the bearing abuts against the bearing positioning surface 21 to indicate that the bearing 3 is pressed in place, so that the bearing 3 is convenient to be matched with the gear shaft 2, and the axial positioning of the bearing 3 is formed.

The inner end surface of the bearing seat 3 extends into the assembly convex ring 11, an annular positioning surface 12 axially aligned with the inner end surface of the bearing seat is formed on the shell 1, an inner convex ring 31 radially aligned with the assembly convex ring 11 is integrally formed on the gear shaft 3 and positioned in the bearing 3, the sealing element 5 is pressed between the assembly convex ring 11 and the inner convex ring 31, one end of the sealing element abuts against the inner end surface of the bearing seat 4, and the other end of the sealing element abuts against the annular positioning surface 12. The sealing element 5 is pressed between the assembly convex ring 11 and the inner convex ring 31, and the sealing element 5 is axially positioned through the inner end surface of the bearing seat and the annular positioning surface 12, so that the positioning reliability of the sealing element 5 is improved, the sealing element 5 effectively seals and separates the inner cavity of the shell from the inner cavity of the bearing seat, and the sealing reliability of lubricating oil or lubricating grease in the inner cavity of the bearing seat is improved.

The inner end face of the bearing seat 4 is separated from the end face of the gear shaft 2 and is not contacted with the end face of the gear shaft, an oil filling hole communicated with the inner cavity of the bearing seat 4 is formed in the center of the bearing seat 4, and the oil filling hole is sealed through a screw plug 6. Lubricating oil or lubricating grease is injected into the inner cavity of the bearing seat 4 through the oil injection hole, and the oil or lubricating grease in the inner cavity of the bearing seat 4 can be replaced or supplemented through the oil injection hole in the use process, so that the full lubrication of the bearing is ensured, and the lubrication reliability is improved.

Wherein the sealing element 5 is a framework oil seal. The framework oil seal has good sealing effect, certain rigidity and high bearing reliability, and is convenient to assemble and position.

The foregoing disclosure of embodiments of the present utility model has been fully described with reference to the accompanying drawings, in which it is to be understood that the embodiments described are merely some of the embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Claims

1. The independent mounting and lubricating structure of the reducer bearing comprises a shell of the reducer, a gear shaft arranged in the shell and a bearing assembled on the gear shaft, and is characterized in that a bearing seat communicated with an inner cavity of the shell is fixed on the shell, the end part of the gear shaft extends into the bearing seat, the bearing is assembled between the bearing seat and the gear shaft, and a sealing element is pressed between the gear shaft and the shell to seal and separate the inner cavity of the bearing seat from the inner cavity of the shell.

2. The independent mounting and lubricating structure of a speed reducer bearing according to claim 1, wherein the housing is provided with an assembling convex ring corresponding to the bearing seat, the inner end of the bearing seat is integrally formed with a connecting ring propped against the assembling convex ring, the connecting ring is fastened on the assembling convex ring through bolts, the end part of the gear shaft is provided with a bearing positioning surface propped against the inner end of the bearing, and the inner end surface of the bearing is propped against the bearing positioning surface.

3. The independent mounting and lubricating structure of a reducer bearing according to claim 2, wherein the inner end surface of the bearing seat extends into the mounting convex ring, an annular positioning surface axially aligned with the inner end surface of the bearing seat is formed on the housing, an inner convex ring radially aligned with the mounting convex ring is integrally formed on the gear shaft and positioned in the bearing, and the sealing element is pressed between the mounting convex ring and the inner convex ring, one end of the sealing element abuts against the inner end surface of the bearing seat, and the other end of the sealing element abuts against the annular positioning surface.

4. The independent mounting and lubricating structure of a speed reducer bearing according to claim 1, wherein the inner end surface of the bearing seat is separated from the end surface of the gear shaft and is not contacted with the end surface of the gear shaft, an oil filling hole communicated with the inner cavity of the bearing seat is formed in the center of the bearing seat, and the oil filling hole is sealed through a screw plug.

5. The independent mounting and lubricating structure of a speed reducer bearing according to claim 1, wherein the sealing member is a skeleton oil seal.