CN114396428A

CN114396428A - Sealed bearing

Info

Publication number: CN114396428A
Application number: CN202111642067.1A
Authority: CN
Inventors: 黄国栋; 王成
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-12-29
Filing date: 2021-12-29
Publication date: 2022-04-26

Abstract

The invention relates to the technical field of bearings, in particular to a sealed bearing which comprises a bearing inner ring, wherein the outer surface of the bearing inner ring is movably connected with a bearing outer ring, a plurality of balls are movably connected between the bearing inner ring and the bearing outer ring, a retainer is movably connected between the balls, a stepped through hole is formed in the retainer, a spherical groove, a second ball, an oil inlet and an oil outlet are formed in the inner wall of the stepped through hole, the second ball is directly contacted with the first ball, the first ball and the surface of the stepped through hole can be prevented from being contacted through the design, the friction between the first ball and the stepped through hole is reduced, so that the high temperature generated by the friction when the bearing runs at high speed is reduced, and the second ball in the spherical groove can be lubricated through the oil inlet and the oil outlet; the invention reduces the high temperature generated by the high-speed operation of the bearing by avoiding the direct contact between the first ball and the retainer, and improves the service life of the bearing.

Description

Sealed bearing

Technical Field

The invention relates to the technical field of bearings, in particular to a sealed bearing.

Background

The bearing is a component for fixing and reducing the load friction coefficient in the mechanical transmission process. It can also be said that the member for reducing the friction coefficient during power transmission and keeping the center position of the shaft fixed when the other members are moved relative to each other on the shaft. The bearing is a lightweight part in modern mechanical equipment. Its main function is to support the mechanical rotating body to reduce the friction coefficient of mechanical load of equipment in the transmission process.

In the process of implementing the invention, the inventor finds that at least the following problems in the prior art are not solved:

1. when the bearing in the prior art works, because the balls are positioned by the retainer, the balls and the retainer can slide relatively in the high-speed rotating process of the bearing, and at the moment, the balls and the retainer can generate high temperature due to friction, so that the material performance of the retainer can be changed due to the high temperature, and the bearing breaks down.

2. Most of bearings in the prior art are sealed by only one sealing ring, the sealing performance is easily influenced when the bearings work for a long time or under severe conditions, meanwhile, the bearings are inconvenient to replace, and the sealing rings of the bearings are easily damaged when the bearings are replaced, so that the sealing rings need to be replaced, the service life of the sealing rings is shortened, and the cost is increased.

To this end, a sealed bearing is proposed.

Disclosure of Invention

The present invention is directed to a sealed bearing, which solves the problems of high temperature generated by the friction between the bearing balls and the supporting frame and the sealing of the bearing proposed in the background art.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a sealed bearing, includes the bearing inner race, the surface swing joint of bearing inner race has the bearing outer lane, intermediate position swing joint has a plurality of first balls between bearing inner race and the bearing outer lane, and is two sets of swing joint has the holder between the adjacent first ball, both sides position all is provided with sealing device between bearing inner race and the bearing outer lane.

Preferably, sealing device includes first connection shell, connects the outer lane, connects inner circle, second connection shell, sealing ring, first recess and second recess, the lower extreme fixed mounting of first connection shell has the connection outer lane, the upper end of second connection shell is close to border position fixed mounting and has the connection inner circle, be connected through connecting the outer lane, connecting the inner circle block between first connection shell and the second connection shell, first recess has all been seted up to the surface one end of first connection shell and second connection shell, the second recess has all been seted up to the surface other end of first connection shell and second connection shell.

Preferably, a sealing film is fixedly arranged on the outer surface of the connecting inner ring.

Preferably, the middle positions of the inner top surface of the first connecting shell and the inner bottom surface of the second connecting shell are both fixedly provided with sealing rings.

Preferably, the holder is the loop configuration, the holder material is SUS304 type non-alloy structural steel, a plurality of notch cuttype through-holes have been seted up on the holder, a plurality of spherical recesses have been seted up to notch cuttype through-hole inner wall, a plurality of oil outlets have been seted up to spherical recess inner wall, the inlet port has been seted up on the holder surface, inlet port and oil outlet end communicate with each other.

Preferably, a second ball is movably connected in the spherical groove, the second ball is in close contact with the first ball, and the second ball is made of SUS 304.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, the retainer is designed into an annular structure, the retainer is provided with a plurality of stepped through holes, the inner walls of the stepped through holes are provided with a plurality of spherical grooves, the second balls are placed in the spherical grooves, the inner walls of the spherical grooves are provided with a plurality of oil outlets, the surface of the retainer is provided with the oil inlet, the oil inlet is communicated with the tail ends of the oil outlets, when the bearing rotates, the first balls in the stepped through holes are contacted with the second balls in the spherical grooves and rotate, so that the direct contact between the first balls and the retainer is avoided, the contact area between the first balls and the retainer is reduced, the high temperature generated by the high-speed rotation of the bearing is reduced, and the retainer is prevented from being deformed due to the high temperature.

2. According to the invention, the first connecting shell, the outer ring, the inner ring, the second connecting shell and the sealing ring are arranged, so that the bearing can be prevented from being influenced by external dust, the lubricating grease in the bearing can be prevented from overflowing, the sealing performance of the bearing is enhanced, the first groove and the second groove are arranged, the sealing device can be easily taken down when parts and the lubricating grease of the bearing need to be replaced, the sealing device is not influenced, the service life of the sealing device is prolonged, and the operation difficulty in replacing the parts is reduced.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a front view of the present invention;

FIG. 3 is an overall cross-sectional view of the present invention;

FIG. 4 is a schematic view of the construction of the sealing device of the present invention;

FIG. 5 is a schematic view of a sealing ring structure of the sealing device of the present invention;

FIG. 6 is a front view of the sealing device of the present invention;

FIG. 7 is a schematic front view of the cage of the present invention;

FIG. 8 is a cross-sectional view of the cage of the present invention;

fig. 9 is a combined view of the cage and the first ball of the present invention.

In the figure: 1. a bearing inner race; 2. a first ball bearing; 3. a bearing outer race; 4. a holder; 41. a stepped through-hole; 42. a spherical recess; 43. an oil inlet hole; 44. a second ball bearing; 45. an oil outlet hole; 5. a sealing device; 51. a first connecting shell; 52. connecting the outer ring; 53. connecting the inner rings; 54. a sealing film; 55. a second connection housing; 56. a seal ring; 57. a first groove; 58. a second groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more, unless specifically defined otherwise, and the terms "mounted," "connected," and "connected" are to be interpreted broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 9, the present invention provides a sealed bearing technical solution: the utility model provides a sealed bearing, includes bearing inner race 1, the surface swing joint of bearing inner race 1 has bearing outer lane 3, intermediate position swing joint has a plurality of first balls 2 between bearing inner race 1 and the bearing outer lane 3, and is two sets of swing joint has holder 4 between the adjacent first ball 2, both sides position all is provided with sealing device 5 between bearing inner race 1 and the bearing outer lane 3.

Through adopting above-mentioned technical scheme, swing joint has first ball 2 in the middle of bearing inner race 1 and the bearing outer race 3 for can carry out relative rotation through first ball 2 between bearing inner race 1 and the bearing outer race 2, be equipped with holder 4 between the first ball 2, affiliated holder 4 can restrict the position of first ball 2, prevent that the bearing can collide each other at rotatory in-process first ball 2, it can prevent that external debris from entering inside the bearing to be equipped with sealing device 5 in both sides position between bearing inner race 1 and bearing outer race 2, also can prevent that the inside lubricating oil of bearing from spilling over, cause the pollution.

Specifically, sealing device 5 includes first connection shell 51, connects outer lane 52, connects inner circle 53, second connection shell 55, sealing ring 56, first recess 57 and second recess 58, the lower extreme fixed mounting of first connection shell 51 has connection outer lane 52, the upper end of second connection shell 55 is close to marginal position fixed mounting and is connected inner circle 53, first connection shell 51 is connected between the shell 55 with the second through connecting outer lane 52, connecting inner circle 53 block and is connected, first recess 57 has all been seted up with the surface one end of second connection shell 55 to first connection shell 51, second connection shell 55's the surface other end has all been seted up second recess 58.

Through adopting above-mentioned technical scheme, can be through setting up first connection shell 51, connect outer lane 52, connect inner circle 53, second connection shell 55, sealing ring 56, can guarantee that the bearing can not receive the influence of external dust, guarantee simultaneously that lubricating grease can not spill over in the bearing, the leakproofness of reinforcing bearing, through setting up first recess 57, second recess 58, can guarantee that the bearing is when needs renewal part and lubricating grease, sealing device 5 can easily take off, and can not exert an influence to sealing device 5.

Specifically, a sealing film 54 is fixedly arranged on the outer surface of the connecting inner ring 53.

Through adopting above-mentioned technical scheme, can guarantee the leakproofness of first connecting shell 51 with second connecting shell 55 junction through setting up seal membrane 54 to the leakproofness of further improvement bearing.

Specifically, the sealing rings 56 are fixedly mounted at the middle positions of the inner top surface of the first connecting shell 51 and the inner bottom surface of the second connecting shell 55.

By adopting the technical scheme, the sealing effect of the sealing device 5 can be improved by arranging the sealing ring 56, and external sundries are prevented from entering the bearing and overflowing lubricating oil in the bearing.

Specifically, holder 4 is the loop configuration, 4 materials of holder are SUS304 type non-alloy structural steel, a plurality of notch cuttype through-holes 41 have been seted up on holder 4, notch cuttype through-hole 41 is kept away from one side of bearing inner race and is established to the wave structure, a plurality of spherical recesses 42 have been seted up to notch cuttype through-hole 41 inner wall, a plurality of oil outlets 45 have been seted up to spherical recess 42 inner wall, inlet port 43 has been seted up on 4 surfaces of holder, inlet port 43 and oil outlet 45 end communicate with each other.

Through adopting the above-mentioned technical scheme, the inside first ball 2 of placing of notch cuttype through-hole 41 on 4 surfaces of holder, through be equipped with spherical recess 42 at notch cuttype through-hole 41 inner wall, oil outlet 45 and inlet port 43, inject lubricating oil in inlet port 43, lubricating oil enters into spherical recess 42 inner wall through oil outlet 45 and can lubricate the inside second ball 44 of spherical recess 42, simultaneously through the contact between first ball 2 and the second ball 44, also can lubricate first ball 2, adopt SUS304 type non-alloy structural steel can make holder 4 bear the operating temperature up to 300 degrees centigrade, establish to the wave structure through keeping away from notch cuttype through-hole 41 bearing outer lane one side, both can reduce the thickness of holder 4, can increase the area of contact of holder 4 and air through the wave structure again, thereby accelerate ball and holder and ball and bearing inner race, the ball and bearing inner race, The heat generated by the bearing outer ring cannot leak out.

Specifically, a second ball 44 is movably connected in the spherical groove 42, the second ball 44 is in close contact with the first ball 2, and the second ball 44 is made of SUS 304.

By adopting the technical scheme, the first ball 2 in the retainer 4 is in contact with the second ball 44, so that the first ball 2 is prevented from being in direct contact with the inner wall of the retainer 4, the high temperature generated by the sliding friction of the first ball 2 and the retainer 4 when the bearing runs at a high speed is reduced, the service life of the bearing is prolonged, and the 304 austenitic stainless steel has good corrosion resistance and heat resistance, and can enable the second ball 44 to adapt to the high temperature generated by high-speed rotation.

The working principle and the using method are as follows: when the invention is used, firstly, the bearing outer ring 1, the bearing inner ring 3, the retainer 4, the first ball 2 and the sealing device 5 are installed, the first ball 2 is installed in the retainer 4 through the bottom of the stepped through hole 41 in the retainer 4, the retainer 4 can keep a proper distance between the rolling bodies to prevent the adjacent rolling bodies from directly contacting so as to keep the friction and the heat generation at the lowest level, the rolling bodies are uniformly distributed on the whole periphery to provide uniform load distribution and quiet and constant-speed operation, the first ball 2 and the second ball 44 can be directly contacted by arranging the spherical groove 42 in the stepped through hole 41 and movably connecting the second ball 44 in the stepped through hole, the first ball 2 is prevented from directly contacting the surface of the stepped through hole 41, the friction between the first ball 2 and the retainer 4 is reduced, the oil inlet hole 43 and the oil outlet hole 45 are arranged on the surface of the retainer 4, make lubricating oil can enter into spherical groove 42 inner wall through inlet port 43 and oil outlet 45, lubricate second ball 44 and first ball 2, through setting up sealing device 5, can prevent that the dust from getting into the bearing, prevent simultaneously that lubricating grease from spilling over in the bearing, set up first connection shell 51, connect outer lane 52, connect inner circle 53, second connection shell 55, sealing ring 56, can guarantee that the bearing can not receive the influence of external dust, guarantee simultaneously that lubricating grease can not spill over in the bearing, strengthen the leakproofness of bearing, through setting up first recess 57, second recess 58, can guarantee that the bearing is when needs renewal part and lubricating grease, sealing device 5 can easily take off, and can not exert an influence to sealing device 5.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A sealed bearing, includes bearing inner race (1), its characterized in that: the outer surface swing joint of bearing inner race (1) has bearing outer lane (3), intermediate position swing joint has a plurality of first ball (2) between bearing inner race (1) and bearing outer lane (3), and is two sets of swing joint has holder (4) between adjacent first ball (2), both sides position all is provided with sealing device (5) between bearing inner race (1) and bearing outer lane (3).

2. A sealed bearing according to claim 1, wherein: sealing device (5) include first connection shell (51), connect outer lane (52), connect inner circle (53), second connection shell (55), sealing ring (56), first recess (57) and second recess (58), the lower extreme fixed mounting of first connection shell (51) has connection outer lane (52), the upper end of second connection shell (55) is close to border position fixed mounting and has connects inner circle (53), connect between shell (55) through connecting outer lane (52), connecting inner circle (53) block between first connection shell (51) and the second connection shell (55), first recess (57) have all been seted up to the surface one end of first connection shell (51) and second connection shell (55), second recess (58) have all been seted up to the surface other end of first connection shell (51) and second connection shell (55).

3. A sealed bearing according to claim 2, wherein: and a sealing film (54) is fixedly arranged on the outer surface of the connecting inner ring (53).

4. A sealed bearing according to claim 2, wherein: and sealing rings (56) are fixedly arranged at the middle positions of the inner top surface of the first connecting shell (51) and the inner bottom surface of the second connecting shell (55).

5. A sealed bearing according to claim 1, wherein: holder (4) are the loop configuration, holder (4) material is SUS304 type non-alloy structural steel, a plurality of notch cuttype through-holes (41) have been seted up on holder (4), notch cuttype through-hole (41) are kept away from one side of bearing inner race and are established to the wave structure, a plurality of spherical recess (42) have been seted up to notch cuttype through-hole (41) inner wall, a plurality of oil outlet (45) have been seted up to spherical recess (42) inner wall, inlet port (43) have been seted up on holder (4) surface, inlet port (43) and oil outlet (45) end communicate with each other.

6. A sealed bearing according to claim 4, wherein: a second ball (44) is movably connected in the spherical groove (42), the material of the second ball (44) is SUS304, and the second ball (44) is in close contact with the first ball (2).