CN219623087U

CN219623087U - Bearing sealing structure

Info

Publication number: CN219623087U
Application number: CN202222250902.3U
Authority: CN
Inventors: 何刚
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-08-25
Filing date: 2022-08-25
Publication date: 2023-09-01
Anticipated expiration: 2032-08-25

Abstract

The utility model relates to the technical field of bearing sealing structures, in particular to a bearing sealing structure, which comprises a transmission shaft, wherein an inner ring is arranged outside the bearing, an outer ring is arranged outside the inner ring, a plurality of balls distributed in an annular array are arranged between the inner ring and the outer ring, metal sealing sheets are arranged at two ends of the inner ring, and the transmission shaft penetrates through the metal sealing sheets and is in clearance connection with the metal sealing sheets; the inner ring comprises a hollow column which is connected with the transmission shaft in a sliding way. When the bearing sealing structure works, the internal lubricating oil flows, the rolling balls are adhered with the lubricating oil to play a role in lubricating, meanwhile, heat is transferred to the lubricating oil, the lubricating oil in the liquid storage tank enters between the metal sealing sheet and the triangular hollow column through the first liquid through hole, the lubricating oil transfers the heat to the semi-cylindrical shell through heat transfer, and the semi-cylindrical shell transfers the heat to the air, so that the heat generated by the bearing during working is reduced, and the service life of the bearing is prolonged.

Description

Bearing sealing structure

Technical Field

The utility model relates to the technical field of bearing sealing structures, in particular to a bearing sealing structure.

Background

The bearing is an important part in modern mechanical equipment, and has the main functions of supporting a mechanical rotating body, reducing the friction coefficient in the motion process and ensuring the rotation precision, and can be divided into two main types of rolling bearings and sliding bearings according to the difference of the friction properties of moving elements, wherein the rolling bearings generally consist of an outer ring, an inner ring, rolling bodies and a retainer, and the rolling bearings are divided into two main types of ball bearings and roller bearings according to the shape of the rolling bodies and are all provided with sealing structures when the bearing is used.

When the bearing in the prior art is used, because the working environment of part of the bearing is a high-speed rotating occasion, lubricating oil is generally added in the bearing to reduce the friction coefficient of the bearing, but more lubricating oil is added, the lubricating oil is added for a period of time, the lubricating oil is added, the adding frequency is higher, the adding frequency is to be improved into the lubricating oil with low frequency, meanwhile, the heat generated by the high-speed rotation of the bearing is dissipated through air cooling, the heat dissipation effect is lower, and the improved requirement exists for the heat dissipation effect.

The above information disclosed in the background section is only for enhancement of understanding of the background of the disclosure and therefore it may include information that does not form the prior art that is already known to a person of ordinary skill in the art.

Disclosure of Invention

The utility model aims to design a bearing sealing structure which reduces the adding frequency of lubricating oil and simultaneously enhances the heat dissipation effect of a bearing during high-speed rotation so as to solve the defects in the technology.

In order to achieve the above object, the present utility model provides the following technical solutions: the bearing sealing structure comprises a transmission shaft, wherein an inner ring is arranged outside the transmission shaft, an outer ring is arranged outside the inner ring, a plurality of balls distributed in an annular array are arranged between the inner ring and the outer ring, metal sealing sheets are arranged at two ends of the inner ring, and the transmission shaft penetrates through the metal sealing sheets and is in clearance connection with the metal sealing sheets;

the inner ring comprises a hollow column which is in sliding connection with the transmission shaft, external threads are formed on the outer peripheral surfaces of two ends of the hollow column, hollow triangular columns are fixedly connected to two ends of the hollow column, a plurality of ball grooves, the number and positions of which correspond to the balls, are formed on the inclined surface of the hollow triangular column, and key grooves are formed on the inner peripheral surface of one hollow triangular column;

the outer ring comprises two semi-cylindrical shells positioned between two metal sealing sheets, a liquid storage groove is formed in the semi-cylindrical shells, lubricating oil is filled in the liquid storage groove, arc tracks in rolling connection with balls are formed on inclined planes on two sides of the semi-cylindrical shells, a plurality of blind holes distributed in an annular array are formed at two ends of the semi-cylindrical shells, a plurality of first liquid through holes distributed in an annular array are formed on the inclined planes of the semi-cylindrical shells, and a plurality of second liquid through holes distributed in an annular array are formed on the inner peripheral surfaces of the semi-cylindrical shells;

the metal sealing piece is internally provided with a plurality of through holes corresponding to the blind holes in number and positions, and bolts in threaded connection with the blind holes are slidably connected in the through holes.

Preferably, the external threads formed on the outer peripheral surfaces of the two ends of the hollow column have opposite rotation directions, and the gap between the external threads and the inner peripheral surface of the semi-cylindrical shell is 0.5-3mm;

the external threads on the two ends of the hollow column can drive lubricating oil in contact with the external threads to one end of the middle part of the hollow column through screw transmission when the transmission shaft drives the hollow column to rotate due to the fact that the external threads on the outer peripheral surfaces of the two ends of the hollow column are opposite in rotation direction, and the external threads can drive the lubricating oil to move more easily due to the fact that the gap between the external threads and the inner peripheral surfaces of the semi-cylindrical shell is 0.5-3mm, and the lubricating oil leaks from the external threads and the inner peripheral surfaces of the semi-cylindrical shell.

Preferably, the first liquid through hole is communicated with the liquid storage tank, and the first liquid through hole is positioned on one side, close to the outer peripheral surface, of the inclined surface of the semi-cylindrical shell;

the inner part of the first liquid through hole is communicated with the liquid storage groove, and the first liquid through hole is positioned on one side of the inclined surface of the semi-cylindrical shell, which is close to the outer peripheral surface, so that lubricating oil between the semi-cylindrical shell and the metal sealing sheet can be mixed with lubricating oil in the liquid storage groove.

Preferably, the second through hole is positioned at the end point of the opposite ends of the two external threads;

the second through-liquid hole is positioned at the end point of the opposite ends of the two external threads, so that the external threads rotate, and when the lubricating oil at the two ends of the hollow column is conveyed to the middle part, the lubricating oil can flow back into the liquid storage tank from the second through-liquid hole, so that the lubricating oil in the bearing sealing structure can flow.

Preferably, the outer peripheral surface of the metal sealing piece is fixedly connected with a rubber ring;

the rubber ring is fixedly connected to the outer peripheral surface of the metal sealing sheet, so that the sealing performance between the metal sealing sheet and the semi-cylindrical shell is better, and lubricating oil is prevented from leaking from between the metal sealing sheet and the semi-cylindrical shell.

Preferably, the liquid level of the lubricating oil in the liquid storage tank is positioned between the inner peripheral surface of the lower semi-cylindrical shell and the outer peripheral surface of the transmission shaft;

the liquid level of the lubricating oil in the liquid storage tank is located between the inner peripheral surface of the semi-cylindrical shell below and the outer peripheral surface of the transmission shaft, so that the lubricating oil can be driven all the time when the hollow column drives the external screw thread to rotate, the lubricating oil in the bearing sealing structure can flow, heat generated during ball friction is taken away by the lubricating oil, and the taken away heat is transmitted to the outside air through the semi-cylindrical shell, so that the service life of the bearing sealing structure is prolonged.

In the technical scheme, the utility model has the technical effects and advantages that:

1. when the bearing sealing structure works, the internal lubricating oil flows, the rolling balls are adhered with the lubricating oil to perform a lubricating effect, meanwhile, heat is transferred to the lubricating oil, the lubricating oil in the liquid storage tank enters between the metal sealing sheet and the triangular hollow column through the first liquid through hole, the heat is transferred to the semi-cylindrical shell through heat transfer by the lubricating oil, and the heat is transferred to the air through the semi-cylindrical shell, so that the heat generated by the bearing during working is reduced, and the service life of the bearing is prolonged;

2. the transmission shaft is mounted on the transmission shaft through a key on the transmission shaft and a key groove on the inner ring, then the balls are placed in the ball grooves, the inner ring is wrapped by the two semi-cylindrical shells, then the metal sealing sheets are placed at two ends of the semi-cylindrical shells, then the bolts are inserted into the through holes and screwed down in the blind holes, then quantitative lubricating oil is injected into the last through holes before the last bolts are not screwed down, then the last bolts are screwed down, and therefore the two semi-cylindrical shells are tightly attached together by the two metal sealing sheets, and the mounting step of the bearing sealing structure is completed, so that the bearing sealing structure is simple to mount and assemble and easy to replace the balls worn in the interior.

3. The bearing sealing structure can be used for adding a large amount of lubricating oil at one time, and the lubricating oil is stored between the metal sealing sheet and the hollow triangular column, so that the lubricating oil cannot be sprayed down, and the adding frequency of the lubricating oil can be reduced.

Drawings

For a clearer description of embodiments of the present utility model or technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described, and it is obvious that the drawings in the following description are only some embodiments described in the present utility model, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a partial cross-sectional view of the present utility model;

FIG. 3 is a schematic view of the connection of the inner ring and the outer ring of the present utility model.

Reference numerals illustrate:

1. a transmission shaft; 2. an inner ring; 3. an outer ring; 4. a ball; 5. a metal sealing sheet; 6. a hollow column; 7. an external thread; 8. a hollow triangular column; 9. a ball groove; 10. a key slot; 11. a semi-cylindrical shell; 12. a liquid storage tank; 13. a circular arc track; 14. a blind hole; 15. a first liquid through hole; 16. a second liquid through hole; 17. and (5) a bolt.

Detailed Description

In order to enable those skilled in the art to better understand the technical solutions of the present utility model, the technical solutions of the embodiments of the present utility model will be clearly and completely described below, and it is obvious that the described embodiments are only some embodiments of the present utility model, not all embodiments. 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.

In order to better understand the above technical solutions, the following detailed description will refer to the accompanying drawings and specific embodiments.

Examples:

1-3, including a transmission shaft 1, an inner ring 2 is arranged outside the transmission shaft, an outer ring 3 is arranged outside the inner ring 2, a plurality of balls 4 distributed in an annular array are arranged between the inner ring 2 and the outer ring 3, metal sealing sheets 5 are arranged at two ends of the inner ring 2, the transmission shaft 1 penetrates through the metal sealing sheets 5 and is in clearance connection with the metal sealing sheets 5, the transmission shaft 1 is connected with the transmission shaft 2 by utilizing the inner ring 2, balls 4 are added between the inner ring 2 and the outer ring 3, and the balls 4 are matched with the metal sealing sheets 5 at two ends, so that a bearing sealing structure is formed;

the inner ring 2 comprises a hollow column 6 which is in sliding connection with the transmission shaft 1, external threads 7 are formed on the outer peripheral surfaces of two ends of the hollow column 6, hollow triangular columns 8 are fixedly connected with two ends of the hollow column 6, a plurality of ball grooves 9 which correspond to the balls 4 in number and positions are formed on the inclined surfaces of the hollow triangular columns 8, and key grooves 10 are formed on the inner peripheral surface of one hollow triangular column 8;

the outer ring 3 comprises two semi-cylindrical shells 11 positioned between two metal sealing sheets 5, a liquid storage tank 12 is formed in the semi-cylindrical shells 11, lubricating oil is filled in the liquid storage tank 12, arc tracks 13 in rolling connection with balls 4 are formed on inclined planes on two sides of the semi-cylindrical shells 11, a plurality of blind holes 14 distributed in an annular array are formed in two ends of the semi-cylindrical shells 11, a plurality of first liquid through holes 15 distributed in an annular array are formed in the inclined planes of the semi-cylindrical shells 11, and a plurality of second liquid through holes 16 distributed in an annular array are formed in the inner peripheral surface of the semi-cylindrical shells 11;

the metal sealing piece 5 is internally provided with a plurality of through holes corresponding to the blind holes 14 in number and positions, and bolts 17 in threaded connection with the blind holes 14 are slidably connected in the through holes.

The implementation mode specifically comprises the following steps: the installation step comprises the following steps: the transmission shaft 1 is mounted on the transmission shaft 1 through keys on the transmission shaft 1 and key grooves 10 on the inner ring 2, then the balls 4 are placed in the ball grooves 9, meanwhile, the inner ring 2 is wrapped by two semi-cylindrical shells 11, then metal sealing pieces 5 are placed at two ends of the semi-cylindrical shells 11, the two ends of the two semi-cylindrical shells 11 are used for clamping the metal sealing pieces 5, then bolts 17 are inserted into through holes and are screwed in blind holes 14, before the last bolts 17 are not screwed in, quantitative lubricating oil is injected into the last through holes, the lubricating oil enters a liquid storage tank 12 through a first liquid through hole 15, then the last bolts 17 are screwed in, so that the two semi-cylindrical shells 11 are tightly attached together by the two metal sealing pieces 5 to form an outer ring 3, and then the outer ring 3 is placed in a hole of equipment to be fixed;

the working steps are as follows: when the transmission shaft 1 starts to work, the transmission shaft 1 drives the hollow column 6 to rotate through the key, the hollow column 6 drives the external thread 7 and the hollow triangular column 8 to rotate, the hollow triangular column 8 drives the ball 4 to roll in the circular arc track 13, the rolling ball 4 is adhered with lubricating oil to play a lubricating role, heat is transferred to the lubricating oil simultaneously, the external thread 7 rotates and drives the lubricating oil to move towards the middle part of the hollow column 6 through spiral transmission, the lubricating oil with heat enters the liquid storage tank 12 through the second liquid through hole 16, the lubricating oil in the liquid storage tank 12 enters between the metal sealing sheet 5 and the triangular hollow column 6 through the first liquid through hole 15, the lubricating oil transfers the heat to the semi-cylindrical shell 11 through heat transfer, and the semi-cylindrical shell 11 transfers the heat to the air, so that the heat generated by the bearing during work is reduced, and the service life of the bearing is prolonged.

While certain exemplary embodiments of the present utility model have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the utility model, which is defined by the appended claims.

The last points to be described are: first, in the description of the present utility model, it should be noted that, unless otherwise specified and defined, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be mechanical or electrical, or may be a direct connection between two elements, and "upper," "lower," "left," "right," etc. are merely used to indicate relative positional relationships, which may be changed when the absolute position of the object being described is changed;

secondly: in the drawings of the disclosed embodiments, only the structures related to the embodiments of the present disclosure are referred to, and other structures can refer to the common design, so that the same embodiment and different embodiments of the present disclosure can be combined with each other under the condition of no conflict;

the previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model.

Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein;

finally: the foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and principles of the utility model are intended to be included within the scope of the utility model.

Claims

1. Bearing seal structure, including transmission shaft (1), its characterized in that: the transmission shaft is characterized in that an inner ring (2) is arranged outside the transmission shaft, an outer ring (3) is arranged outside the inner ring (2), a plurality of balls (4) distributed in an annular array are arranged between the inner ring (2) and the outer ring (3), metal sealing sheets (5) are arranged at two ends of the inner ring (2), and the transmission shaft (1) penetrates through the metal sealing sheets (5) and is in clearance connection with the metal sealing sheets (5);

the inner ring (2) comprises a hollow column (6) which is in sliding connection with the transmission shaft (1), external threads (7) are formed on the outer peripheral surfaces of two ends of the hollow column (6), hollow triangular columns (8) are fixedly connected to two ends of the hollow column (6), a plurality of ball grooves (9) which correspond to the balls (4) in number and position are formed on the inclined surface of each hollow triangular column (8), and key grooves (10) are formed on the inner peripheral surface of one hollow triangular column (8);

the outer ring (3) comprises two semi-cylindrical shells (11) positioned between two metal sealing sheets (5), a liquid storage groove (12) is formed in the semi-cylindrical shells (11), lubricating oil is filled in the liquid storage groove (12), arc tracks (13) in rolling connection with balls (4) are formed in inclined planes on two sides of the semi-cylindrical shells (11), a plurality of blind holes (14) in annular array distribution are formed in two ends of the semi-cylindrical shells (11), a plurality of first liquid through holes (15) in annular array distribution are formed in the inclined planes of the semi-cylindrical shells (11), and a plurality of second liquid through holes (16) in annular array distribution are formed in the inner peripheral surface of the semi-cylindrical shells (11);

the metal sealing piece (5) is internally provided with a plurality of through holes corresponding to the blind holes (14) in number and position, and bolts (17) in threaded connection with the blind holes (14) are slidably connected in the through holes.

2. A bearing seal arrangement according to claim 1, wherein: external threads (7) are formed on the outer peripheral surfaces of the two ends of the hollow column (6) in opposite rotation directions, and a gap between the external threads (7) and the inner peripheral surface of the semi-cylindrical shell (11) is 0.5-3mm.

3. A bearing seal arrangement according to claim 1, wherein: the inside of the first liquid through hole (15) is communicated with the liquid storage groove (12), and the first liquid through hole (15) is positioned on one side, close to the outer peripheral surface, of the inclined surface of the semi-cylindrical shell (11).

4. A bearing seal arrangement according to claim 1, wherein: the second liquid through hole (16) is positioned at the end point of the opposite ends of the two external threads (7).

5. A bearing seal arrangement according to claim 1, wherein: the outer peripheral surface of the metal sealing piece (5) is fixedly connected with a rubber ring.

6. A bearing seal arrangement according to claim 1, wherein: the liquid level of the lubricating oil in the liquid storage groove (12) is positioned between the inner peripheral surface of the semi-cylindrical shell (11) below and the outer peripheral surface of the transmission shaft (1).