CN215763195U

CN215763195U - End cover of transmission shaft of speed reducer

Info

Publication number: CN215763195U
Application number: CN202122205291.6U
Authority: CN
Inventors: 赵海军; 范旭波
Original assignee: Anhui Shoukuang Dachang Metal Materials Co ltd
Current assignee: Anhui Shoukuang Dachang Metal Materials Co ltd
Priority date: 2021-09-13
Filing date: 2021-09-13
Publication date: 2022-02-08
Anticipated expiration: 2031-09-13

Abstract

The utility model discloses a speed reducer transmission shaft end cover which comprises a cover body fixed on a speed reducer box body, wherein the cover body is provided with a central through hole, an oil retainer ring is arranged in an orifice at one end of the central through hole, which faces the speed reducer box body, a framework oil seal is arranged in an orifice at the other end of the central through hole, a transmission shaft of a speed reducer coaxially penetrates through the oil retainer ring, the central through hole of the cover body and the framework oil seal, an oil collecting groove is formed in the central through hole of the cover body between the framework oil seal and the oil retainer ring, and an oil return hole is also formed in the oil retainer ring. The utility model can fundamentally solve the problem of oil leakage of the speed reducer and simultaneously has good positioning effect on the installation of the framework oil seal.

Description

End cover of transmission shaft of speed reducer

Technical Field

The utility model relates to the field of end covers of speed reducers, in particular to an end cover of a transmission shaft of a speed reducer.

Background

The end face structure of the speed reducer is shown in fig. 1, one side of a transmission shaft of a speed reducer box body 4 is generally fixed with an end cover 3, the end cover 3 is provided with a central through hole, the transmission shaft 1 of the speed reducer coaxially penetrates through the central through hole of the end cover 3, a framework oil seal 2 is coaxially fixed in the central through hole, and the framework oil seal 2 is coaxially sleeved outside the transmission shaft 1. The speed reducer with the end face structure has the advantages that along with the extension of the online service life, oil leakage and oil leakage phenomena of different degrees can occur at the position of the transmission shaft, the oil leakage and the oil leakage phenomena are more serious, and lubricating oil flowing out of the speed reducer box body 1 can be splashed out through the gap between the transmission shaft 1 and the framework oil seal 2, so that oil leakage or oil leakage is caused. The oil leakage or oil leakage not only causes resource waste, but also pollutes the environment, and the oil level of the speed reducer is reduced due to long-time oil leakage, so that the service life of the speed reducer is shortened.

The main reasons for the oil leakage and oil leakage are as follows: (1) the framework oil seal of part of the speed reducer is unreasonable in design. (2) The abrasion of the clearance between the transmission shaft and the framework oil seal is increased after long-time operation. (3) The material of the commonly used framework oil seal is rubber, and the material is aged along with the time extension, so that the initial sealing effect cannot be achieved. (4) The impurities in the air enter, so that the quality of the oil product is reduced. (5) The oil level of the box body of the speed reducer is high, and the temperature is high.

In the prior art, common treatment methods for oil leakage and oil seepage comprise the following steps: (1) and tightening an oil seal spring or replacing a framework oil seal. (2) The transmission shaft repairs the worn part or the mounting sleeve. (3) And replacing the double-framework oil seal. (4) And controlling low oil level operation. The treatment methods have the problems of poor oil leakage treatment effect and oil leakage phenomenon again in a short time after oil leakage treatment.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an end cover of a transmission shaft of a speed reducer, which aims to solve the problems of oil leakage and oil seepage of the speed reducer in the prior art.

In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:

the utility model provides a speed reducer transmission shaft end cover, is including being fixed in the lid of speed reducer box transmission shaft one side, and the lid has central through-hole, the coaxial through-hole that runs through the lid of transmission shaft of speed reducer, there is the space between the pore wall of central through-hole and the transmission shaft, and central through-hole is fixed with the oil scraper ring towards the one end drill way of speed reducer box in the coaxial, and the coaxial skeleton oil blanket that is fixed with in the central through-hole of central through-hole other end drill way, the coaxial oil scraper ring, skeleton oil blanket that run through of transmission shaft of speed reducer, and transmission shaft and oil scraper ring are running through position clearance fit to by the inside oil collecting tank that forms of lid central through-hole between skeleton oil blanket, the oil scraper ring, be equipped with the oil gallery in the oil scraper ring, oil gallery one end drill way communicates to the oil collecting tank, and oil gallery other end drill way communicates to the speed reducer box.

Further, the transmission shaft and the framework seal are in transition fit at a penetrating position.

Furthermore, an oil return hole in the oil baffle ring is an inclined hole, the high end of the inclined hole is communicated to the oil collecting tank, and the low end of the inclined hole is communicated to the speed reducer box body.

Further, the lid is equipped with the snap ring towards the one side of speed reducer box, speed reducer box transmission shaft simultaneously is equipped with ring groove, and the snap ring card of lid is gone into to the ring groove of speed reducer box in.

Compared with the traditional end cover, the axial length of the central through hole of the cover body is increased, the framework oil seal is arranged at the outward end of the central through hole of the cover body, the oil baffle ring is arranged at the inward end of the central through hole of the cover body, an oil collecting groove is formed, most of lubricating oil splashed out of the speed reducer box body is blocked by the oil baffle ring, and a small part of lubricating oil enters the oil collecting groove through a gap between the oil baffle ring and the transmission shaft.

Compared with the prior art, the end cover of the transmission shaft of the speed reducer can effectively prevent 95% of lubricating oil from splashing and passing through by adding the oil retainer ring. Secondly, even a small portion of the lubricating oil passing through the slinger will collect at the designed sump location. And finally, the lubricating oil flows back to the speed reducer box body again through the oil return hole. Therefore, the oil leakage problem of the speed reducer can be fundamentally solved, and the framework oil seal installation positioning device plays a good positioning role.

Drawings

Fig. 1 is a schematic structural view of an end cover of a speed reducer box in the prior art.

Fig. 2 is a schematic structural diagram of the present invention.

Detailed Description

The utility model is further illustrated with reference to the following figures and examples.

As shown in fig. 2, the end cover for the transmission shaft of the speed reducer comprises a cover body 3 fixed on the penetrating surface of the transmission shaft 1 on the left side of a speed reducer box body 4, wherein a clamping ring is arranged on the cover body 3 facing the right side cover surface of the speed reducer box body, an annular clamping groove is arranged on the left side surface of the speed reducer box body 4, and the clamping ring of the cover body 3 is clamped into the annular clamping groove of the speed reducer box body 4 after being fixed.

The cover body 3 is provided with a central through hole, and the aperture of the central through hole of the cover body 3 is larger than the outer diameter of the transmission shaft 1. An oil retainer ring 7 is coaxially fixed in the right end of the central through hole of the cover body 3, and the oil retainer ring 7 faces the speed reducer box body 4. A framework oil seal 2 is coaxially fixed in the left end of the central through hole of the cover body 3. The oil retainer 7 and the framework oil seal 2 are respectively provided with a central hole, and the aperture of the central hole of the oil retainer 7 is larger than the outer diameter of the transmission shaft 1 but smaller than the inner diameter of the central through hole of the cover body 3; the aperture of the central hole of the framework oil seal 2 is equal to the outer diameter of the transmission shaft 1 or larger than the outer diameter of the transmission shaft 1.

A transmission shaft 1 of the speed reducer coaxially penetrates through a center hole of the oil retainer 7, a center through hole of the cover body 3 and a center hole of the framework oil seal 2 in sequence and then penetrates out of the cover body 3, and an oil collecting tank 5 surrounding the transmission shaft 1 is formed inside the center through hole of the cover body 3 between the framework oil seal 2 and the oil retainer 7. The lower part of the oil retainer 7 is provided with an oil return hole 6, the oil return hole 6 is an inclined hole, the high end of the inclined hole is communicated to the oil collecting tank 5, and the low end of the inclined hole is communicated to the speed reducer box body 4.

According to the utility model, the oil deflector ring 7 is additionally arranged at the sealing gap, the inner diameter of the oil deflector ring 7 needs to be changed according to the diameter of the transmission shaft 1 of the speed reducer, and a gap of 0.5-1 mm is reserved between the oil deflector ring and the transmission shaft of the speed reducer, so that splashing can be prevented, and normal rotation of the transmission shaft 1 is not influenced.

An oil collecting tank 5 is arranged behind the oil deflector ring 7 through the relatively thickened inner hole position of the end cover body 3. The oil collecting groove 5 plays a role in collecting oil drops passing through the oil retainer 7 and also plays a role in positioning the framework oil seal 2. The framework oil seal 2 is accurately positioned during installation, and the phenomenon of over-depth or over-submergence cannot occur.

In the running process of the speed reducer, lubricating oil is continuously splashed in the speed reducer box body 4 under the driving of the gear. Thereby achieving the function of lubricating the gear and the bearing. But the splashing track is irregular, and part of the splashing track overflows outwards through the contact surface of the transmission shaft 1 and the framework oil seal 2. The oil slinger 7 of the present invention functions to effectively block the splashed oil droplets which overflow. However, the slinger 7 does not completely engage the reducer drive shaft 1, which results in a small amount of oil droplets passing through the slinger 7 to the oil sump 5. The part of the oil drops passing through the gap has no kinetic energy at all and can be collected in the oil collecting tank 5 only smoothly. Along with the increase of the collection amount, the oil return hole 6 plays a key role in guiding the oil in the oil collecting tank 5 into the speed reducer box body 4. Therefore, the oil leakage phenomenon of the speed reducer is thoroughly solved through three protections.

The embodiments of the present invention are described only for the preferred embodiments of the present invention, and not for the limitation of the concept and scope of the present invention, and various modifications and improvements made to the technical solution of the present invention by those skilled in the art without departing from the design concept of the present invention shall fall into the protection scope of the present invention, and the technical content of the present invention which is claimed is fully set forth in the claims.

Claims

1. The utility model provides a speed reducer transmission shaft end cover, is including being fixed in the lid of speed reducer box transmission shaft one side, and the lid has central through-hole, the coaxial central through-hole who runs through the lid of transmission shaft of speed reducer, its characterized in that: a gap is reserved between the hole wall of the central through hole and the transmission shaft, an oil retainer ring is coaxially fixed in the hole opening at one end, facing the speed reducer box body, of the central through hole, a framework oil seal is coaxially fixed in the hole opening at the other end of the central through hole, the transmission shaft of the speed reducer coaxially penetrates through the oil retainer ring and the framework oil seal, the transmission shaft and the oil retainer ring are in clearance fit at the penetrating position, an oil collecting groove is formed inside the central through hole of the cover body between the framework oil seal and the oil retainer ring, an oil return hole is formed in the oil retainer ring, the hole opening at one end of the oil return hole is communicated to the oil collecting groove, and the hole opening at the other end of the oil return hole is communicated to the speed reducer box body.

2. The end cover of the transmission shaft of the speed reducer according to claim 1, wherein: the transmission shaft and the framework seal are in transition fit at a penetrating position.

3. The end cover of the transmission shaft of the speed reducer according to claim 1, wherein: the oil return hole in the oil baffle ring is an inclined hole, the high end of the inclined hole is communicated to the oil collecting tank, and the low end of the inclined hole is communicated to the speed reducer box body.

4. The end cover of the transmission shaft of the speed reducer according to claim 1, wherein: the one side of lid towards the speed reducer box is equipped with the snap ring, speed reducer box transmission shaft simultaneously is equipped with ring groove, and the snap ring card of lid is gone into to the ring groove of speed reducer box in.