CN214425061U

CN214425061U - Dynamic sealing structure of reducer output shaft

Info

Publication number: CN214425061U
Application number: CN202120375117.3U
Authority: CN
Inventors: 张聪
Original assignee: Derui Petroleum Equipment Qingdao Co ltd
Current assignee: Derui Petroleum Equipment Qingdao Co ltd
Priority date: 2021-02-09
Filing date: 2021-02-09
Publication date: 2021-10-19
Anticipated expiration: 2031-02-09

Abstract

The utility model discloses a dynamic seal structure of a reducer output shaft, which comprises a shell for mounting a bearing and a plurality of sealing rings arranged in parallel along the reducer output shaft), wherein an oil throwing plate is fixedly mounted on the outer side of the sealing ring at the outermost side on the reducer output shaft, an oil groove for guiding leaked lubricating oil to enter on the reducer output shaft is arranged in the shell corresponding to the oil throwing plate, and an oil return channel for circularly returning the leaked lubricating oil is arranged at the other end of the oil throwing plate; the utility model discloses a set up the oil groove, get rid of the system of oiled-plate and oil return way, make it can concentrate the lubricating oil of leaking when the sealing washer became invalid, make it return to the effect of playing the lubrication in the casing once more through the oil return way under the effect of centrifugal force again to can effectually avoid lubricating oil to leak.

Description

Dynamic sealing structure of reducer output shaft

Technical Field

The utility model relates to a sealing device technical field, concretely relates to dynamic seal structure of reduction gear output shaft.

Background

The reducer is widely used as a power conversion device of industrial machinery and vehicles, however, normal lubrication of a bearing between an output shaft of the reducer and a shell is an important prerequisite for reliable operation of the reducer, normal sealing between the output shaft and the shell is an important basis for ensuring normal lubrication of the bearing and preventing leakage and polluting the environment, and research on dynamic sealing of the output shaft of the reducer has been a main research subject in the industry.

The bearing lubrication mainly comprises splash lubrication, forced lubrication and oil immersion lubrication, wherein the oil immersion lubrication is the most reliable and simple, the oil immersion lubrication means that the bearing is immersed in the lubricating oil, but the oil is easy to leak out from a sealing part. At present, elastic extrusion sealing is mainly adopted for sealing, namely, elastomers such as rubber are tightly pressed on the surface of a shaft to realize sealing, but along with the increase of the service time and the aging of rubber parts and other reasons, the sealing effect caused by the abrasion of the rubber is invalid, so that oil leaks, and the main means at present is to use a sealing rubber ring with better quality or adopt a plurality of sealing rings. The index of the method is not the basis, only the limited service life is prolonged, but the cost is correspondingly increased, and the cost performance is not high.

Disclosure of Invention

An object of the utility model is to provide a dynamic seal structure of reduction gear output shaft to seal among the solution prior art and lead to the oil leak easily or seal technical problem with high costs.

In order to solve the above technical problem, the utility model particularly provides the following technical scheme:

the dynamic sealing structure comprises a shell for mounting a bearing and a plurality of sealing rings arranged in parallel along a reducer output shaft), wherein an oil throwing plate is fixedly mounted on the outer side of the outermost sealing ring on the reducer output shaft, an oil groove for guiding leaked lubricating oil to enter is formed in the shell corresponding to the oil throwing plate, and the other end of the oil throwing plate is provided with an oil return channel for circularly returning the leaked lubricating oil.

Furthermore, the oil return channel is arranged in the shell, and two ends of the oil return channel are respectively communicated with the oil groove and the bearing to form a circulation loop for returning leaked lubricating oil.

Further, the oil throwing plate is fixedly arranged on an output shaft of the speed reducer in an annular shape.

Compared with the prior art, the utility model following beneficial effect has:

the utility model discloses a set up the oil groove, get rid of the system of oiled-plate and oil return way, make it can concentrate the lubricating oil of leaking when the sealing washer became invalid, make it return to the effect of playing the lubrication in the casing once more through the oil return way under the effect of centrifugal force again to can effectually avoid lubricating oil to leak.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

The reference numerals in the drawings denote the following, respectively:

1-a bearing; 2-a shell; 3-a reducer output shaft; 4-sealing ring; 5-oil throwing plate; 6-oil groove; 7-oil return channel.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1, the utility model provides a dynamic seal structure of reduction gear output shaft, including the casing 2 that is used for installing bearing 1 and a plurality of sealing washer 4 that set up side by side along reduction gear output shaft 3.

The utility model discloses in play the purpose that blocks lubricating oil leakage through the sealing washer 4 that sets up side by side to in this embodiment, lie in outside fixed mounting who gets rid of oiled plate 5 on reduction gear output shaft 3 outside sealing washer 4, corresponding it is being provided with the oil groove 6 that the lubricating oil that leaks got into on the guide reduction gear output shaft 3 in the casing 2 of oiled plate 5 to get rid of.

And an oil return channel 7 for circularly returning leaked lubricating oil is arranged at the other end of the oil throwing plate 5. The oil return channel 7 is arranged in the shell 2, and two ends of the oil return channel 7 are respectively communicated with the oil groove 6 and the bearing 1 to form a circulation loop for returning leaked lubricating oil.

And the oil throwing plate 5 is fixedly arranged on the output shaft 3 of the speed reducer in an annular shape.

After 4 inefficacy of a plurality of sealing washers that set up side by side at the multistage, oil can slowly toward the outflow to can slowly assemble in the oil groove 6, when storing up a certain degree, because reduction gear output shaft 3 takes to get rid of the oiled plate 5 rotatory, can drive lubricating oil rotatory, and get rid of the inner wall of casing 2 under the effect of centrifugal force on, lubricating oil on the inner wall can return casing 2 the inside along oil return way 7 and lubricate once more. The utility model discloses a on the basis of guaranteeing the sealing washer is sealed, increased collection oil-get rid of oily-oil return system, realized not having basically and leak.

The above embodiments are only exemplary embodiments of the present application, and are not intended to limit the present application, and the protection scope of the present application is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the present application and such modifications and equivalents should also be considered to be within the scope of the present application.

Claims

1. The utility model provides a dynamic seal structure of reduction gear output shaft, is including casing (2) that are used for installing bearing (1) and along a plurality of sealing washer (4) that reduction gear output shaft (3) set up side by side, its characterized in that, lies in outside fixed mounting who gets rid of oiled plate (5) outside sealing washer (4) on reduction gear output shaft (3), is corresponding it is provided with oil groove (6) that guide leakage lubricating oil entering on reduction gear output shaft (3) in casing (2) of oiled plate (5), just it is provided with oil return way (7) that are used for sending back leakage lubricating oil circulation to get rid of the other end of oiled plate (5).

2. A dynamic seal structure of a reducer output shaft according to claim 1, characterized in that: the oil return channel (7) is arranged in the shell (2), and two ends of the oil return channel (7) are respectively communicated with the oil groove (6) and the bearing (1) to form a circulating loop for returning leaked lubricating oil.

3. A dynamic seal structure of a reducer output shaft according to claim 1, characterized in that: the oil throwing plate (5) is annularly and fixedly arranged on the output shaft (3) of the speed reducer.