CN217926761U

CN217926761U - Low-friction high-lubrication thrust roller bearing

Info

Publication number: CN217926761U
Application number: CN202221822982.9U
Authority: CN
Inventors: 王雨
Original assignee: Jiangsu Nanfang Precision Industry Co ltd
Current assignee: Jiangsu Nanfang Precision Industry Co ltd
Priority date: 2022-07-15
Filing date: 2022-07-15
Publication date: 2022-11-29
Anticipated expiration: 2032-07-15

Abstract

The utility model provides a high lubricated thrust roller bearing of low friction, including holder and a plurality of roller, have the direction transition face between at least a side terminal surface and the side of installation window in the holder both ends face, the minimum distance between the side of direction transition face and installation window relative direction side is not more than the external diameter of roller, and the maximum distance between the side of direction transition face and installation window relative direction side is greater than the external diameter of roller. The utility model has the advantages of reasonable design, through the cooperation design of installation window and direction transition face for the bearing has high lubrication and low friction ability, has not only realized the assembly of the roller of being convenient for on the holder, can prevent moreover that the roller from dropping from the holder, has solved the problem that friction torque is great among the current thrust roller bearing, lubricated space is not enough, the assembly mode is bad, has reduced the stress concentration that the thrust holder arouses because the internal and external diameter is poor.

Description

Low-friction high-lubrication thrust roller bearing

Technical Field

The utility model relates to a bearing processing technology field especially relates to a high lubricated thrust roller bearing of low friction.

Background

Roller bearings are one type of rolling bearings, one of the components widely used in modern machinery. It relies on rolling contact between the primary elements to support the rotating parts. The roller bearing has the advantages of small moment required by starting, high rotation precision, convenience in selection and the like. The roller bearing mainly comprises a self-aligning roller bearing, a thrust self-aligning roller bearing, a tapered roller, a cylindrical roller bearing and other structural types.

The thrust roller bearing has a large market in the field of bearing application due to high rotation precision and large load, but due to the structural limitation of the bearing, the existing thrust roller bearing has smaller lubrication space and high friction torque; the special application condition that the lubrication requirement is high and the friction torque is low cannot meet the working condition requirement, and the service life and the use of the thrust roller bearing are limited.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: in order to overcome the not enough of prior art, the utility model provides a high lubricated thrust roller bearing of low friction when guaranteeing that the roller can effectively stably cooperate to connect on the holder, it is convenient for the installation of roller to provide, and the degree of lubrication is high and the friction is low between roller and the holder simultaneously, has solved in the current thrust roller bearing that friction torque is great, lubricated space is not enough, the problem of assembly mode is bad, has reduced the problem of thrust holder because the poor stress concentration who arouses of internal and external diameter.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a high lubricated thrust roller bearing of low friction includes holder and a plurality of roller, the holder including being annular external diameter retaining ring and internal diameter retaining ring, external diameter retaining ring and internal diameter retaining ring between have two at least crossbeams along circumferencial direction interval distribution, form the installation window that supplies the roller to hold between two adjacent crossbeams, the roller setting in the installation window, holder both ends face in at least one side terminal surface and installation window's side between have the direction transition face, the direction transition face be not more than the external diameter of roller with the minimum distance between the side of installation window opposite direction side, the direction transition face be greater than the external diameter of roller with the maximum distance between the side of installation window opposite direction side.

In the above scheme, the installation window is used for accommodating and installing the roller, the installation window is provided with the guide transition surface corresponding to the installation direction of the roller, so that the roller can be conveniently installed and matched along the guide transition surface, the roller can be conveniently assembled on the retainer, the limiting through the installation window can prevent the roller from falling off the retainer, the friction torque can be conveniently reduced, and a space is provided for lubrication.

In order to better enable the mounting window to accommodate the mounting roller and ensure the lubricating effect of the roller and the retainer, the side wall of the cross beam is provided with a sunken locking opening, the roller is embedded into the locking opening in the mounting window, and the guide transition surface is arranged between the end surface of the retainer and the side surface where the lock catch is arranged. The roller is embedded into the fore shaft of the mounting window in a matched manner through the guide of the guide transition surface, the fore shaft can guide the rolling direction of the roller and limit the rolling direction, and the roller is prevented from falling off from the mounting window.

Preferably, the cross section of the locking notch is circular arc. The arc shape is matched with the outer surface of the roller, so that the roller can roll in the mounting window conveniently, and meanwhile, the friction torque in the roller bearing can be effectively reduced.

Furthermore, each mounting window is symmetrically provided with a locking notch corresponding to the rotating contact position of the roller, each locking notch is inwards and outwards sunken from the end face of the retainer to form a guide transition surface, and the guide transition surface inclines to the middle position of the thickness direction of the retainer and obliquely points to one side face of the mounting window corresponding to the outer diameter retainer ring or the inner diameter retainer ring.

Furthermore, each locking notch is symmetrically provided with guide transition surfaces corresponding to the end surfaces on the two sides of the retainer, and the guide transition surfaces corresponding to the end surfaces on the two sides of the retainer of each locking notch are connected to form a V-shaped structure. When the roller is installed, the roller can be installed from any end face of the retainer, and the roller is inserted into the locking notch along the guide inclined plane in a guiding mode to be well matched. The guide transition surface plays a good role in guiding the embedding operation.

Furthermore, the outer diameter check ring, the inner diameter check ring and the cross beam are of an integrally formed structure.

The beneficial effects of the utility model are that, the utility model provides a pair of high lubricated thrust roller bearing of low friction, structural design is reasonable, through the cooperation design of installation window and direction transition face, make the bearing have high lubrication and low friction ability, not only realized the assembly of the roller of being convenient for on the holder, can prevent moreover that the roller from dropping from the holder, solved among the current thrust roller bearing that friction torque is great, lubricated space is not enough, the bad problem of assembly mode, reduced the stress concentration that the thrust holder arouses because the difference of inside and outside diameter.

Drawings

The present invention will be further described with reference to the accompanying drawings and examples.

Fig. 1 is a three-dimensional schematic diagram of an embodiment of the present invention.

Fig. 2 is a two-dimensional view of an embodiment of the invention.

Fig. 3 isbase:Sub>A cross-sectional view taken along linebase:Sub>A-base:Sub>A of fig. 2 according to the present invention.

Fig. 4 is a three-dimensional cross-sectional view of a cage in an embodiment of the invention.

Fig. 5 is a two-dimensional cross-sectional view of a cage according to an embodiment of the present invention.

Fig. 6 is a two-dimensional cross-sectional view of a cage in an embodiment of the invention.

In the figure, 1, a retainer 1-1, an outer diameter retainer ring 1-2, an inner diameter retainer ring 1-3, a cross beam 2, a roller 3, a mounting window 3-1, a guide transition surface 3-2 and a locking notch are arranged.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic drawings which illustrate the basic structure of the invention in a schematic manner only, and thus show only the components which are relevant to the invention, and the directions and references (e.g. upper, lower, left, right, etc.) may be used only to help describe the features in the drawings. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the claimed subject matter is defined only by the appended claims and equivalents thereof.

The thrust roller bearing with low friction and high lubrication shown in fig. 1 is the most preferred embodiment of the present invention. The thrust roller bearing comprises a retainer 1 and a plurality of rollers 2 uniformly distributed on the retainer 1.

The retainer 1 comprises an outer diameter check ring 1-1 and an inner diameter check ring 1-2 which are annular, and cross beams 1-3 are distributed between the outer diameter check ring 1-1 and the inner diameter check ring 1-2 at intervals along the circumferential direction. The number of beams 1-3 corresponds to the number of rollers 2. A mounting window 3 for receiving the roller 2 is formed between two adjacent cross members 1-3. In the embodiment, the outer diameter retainer ring 1-1, the inner diameter retainer ring 1-2 and the cross beam 1-3 are of an integrally formed structure. The roller 2 is a cylindrical roller 2. Meanwhile, the cross beams 1-3 are circumferentially and uniformly distributed, correspondingly, the formed mounting windows 3 are also uniformly distributed in a reversing manner, and after the rollers 2 are mounted on the retainer 1, the retainer 1 can keep relatively uniform stress during operation, so that the service life of the bearing is ensured.

As shown in fig. 4, in order to better accommodate the mounting windows 3 with the mounting rollers 2 while ensuring a lubricating effect of the rollers 2 with the cage 1, the cross beams 1-3 have on their side walls recessed locking notches into which the rollers 2 are inserted in the mounting windows 3 in which they are located. The mounting window 3 has a rectangular radial section along the retainer 1, and the cross section of the locking notch is arc-shaped, so that the locking notch can guide and limit the rolling direction of the roller 2, and the roller 2 is prevented from falling off from the mounting window 3. Meanwhile, the arc shape of the locking opening is matched with the outer surface of the roller 2, so that the roller 2 can roll in the mounting window 3 conveniently, the friction torque in a bearing of the roller 2 is reduced, and the lubricating performance is improved.

In order to facilitate the embedding of the roller 2, a guide transition surface is arranged between at least one end surface of the two end surfaces of the retainer 1 and the side surface of the mounting window 3, and the guide transition surface is connected and arranged between the end surface of the retainer 1 and the side surface where the lock catch is located and used for guiding the roller 2 to be embedded into the mounting window 3. The minimum distance between the guide transition surface and the side surface of the opposite direction side of the mounting window 3 is not more than the outer diameter of the roller 2, and the maximum distance between the guide transition surface and the side surface of the opposite direction side of the mounting window 3 is more than the outer diameter of the roller 2. The guide transition surface inclines to the middle position of the retainer 1 in the thickness direction and points to one side surface of the mounting window 3 corresponding to the outer diameter retainer ring 1-1 or the inner diameter retainer ring 1-2.

As shown in fig. 5 and 6, in the present embodiment, each mounting window 3 is symmetrically provided with a locking notch corresponding to the rotational contact position of the roller 2, and each locking notch is recessed inward and outward from the end face of the cage 1 to form a guide transition surface. The two side end faces of each locking notch corresponding to the retainer 1 are symmetrically provided with guide transition faces, and the guide transition faces corresponding to the two end faces are connected to form a V-shaped structure. Namely, when the roller 2 is installed, the roller 2 can be installed from any end face of the retainer 1, and the roller 2 is only required to be inserted into the locking notch along the guide inclined face for good matching. After the retainer 1 and the roller 2 are separately machined, the roller 2 needs to be fitted into the mounting window 3 of the retainer 1. Because each mounting window 3 is provided with a guide transition surface corresponding to the side surfaces of two ends and locking notches on two sides of the retainer 1, the end part of the roller 2 is contacted with the guide transition surfaces to apply mounting pressure to the roller 2. In the embodiment, the guide transition surface is obliquely directed to the side surface of one side of the inner diameter retainer ring 1-2, one end of the roller 2 is also directed to the direction of the inner diameter retainer ring 1-2 and moves towards the thickness center of the retainer 1 along the guide transition surface until the roller 2 is correspondingly embedded into the mounting window 3, and the roller 2 is correspondingly in clearance fit with the mounting window 3 and the locking notch. The guide transition surfaces respectively designed on the two end surfaces of the retainer 1 not only play a role in good guiding and embedding operation, but also play a role in centering operation in installation guide, and are convenient for the installation and positioning of the roller 2.

The thrust roller bearing with low friction and high lubrication is reasonable in structural design, the installation window 3 capable of limiting the single roller 2 is formed between every two adjacent cross beams 1-3, and the bearing has high lubrication and low friction capabilities through the matching design of the installation window 3 and the guide transition surface, so that the assembly of the roller 2 on the retainer 1 is facilitated, the roller 2 can be prevented from falling off from the retainer 1, the problems of large friction torque, insufficient lubrication space and poor assembly mode in the existing thrust roller bearing are solved, and the stress concentration of the retainer 1 caused by the difference of the inner diameter and the outer diameter is reduced.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. A low-friction high-lubrication thrust roller bearing is characterized in that: the roller cage comprises a cage (1) and a plurality of rollers (2), wherein the cage (1) comprises an outer diameter check ring (1-1) and an inner diameter check ring (1-2) which are annular, at least two cross beams (1-3) are distributed between the outer diameter check ring (1-1) and the inner diameter check ring (1-2) at intervals along the circumferential direction, a mounting window (3) for accommodating the rollers (2) is formed between every two adjacent cross beams (1-3), the rollers (2) are arranged in the mounting window (3), a guide transition surface is arranged between at least one side end surface of the two end surfaces of the cage (1) and the side surface of the mounting window (3), the minimum distance between the guide transition surface and the side surface of the opposite direction side of the mounting window (3) is not larger than the outer diameter of the rollers (2), and the maximum distance between the guide transition surface and the side surface of the opposite direction side of the mounting window (3) is larger than the outer diameter of the rollers (2).

2. A low-friction highly-lubricated thrust roller bearing according to claim 1, wherein: the lateral walls of the cross beams (1-3) are provided with sunken locking notches, the rollers (2) are embedded into the locking notches in the mounting windows (3) where the rollers are located, and the guide transition surfaces are arranged between the end surfaces of the retainer (1) and the side surfaces where the lock catches are located.

3. A low-friction highly-lubricated thrust roller bearing according to claim 2, wherein: the cross section of the locking notch is arc-shaped.

4. A low-friction highly-lubricated thrust roller bearing according to claim 2, wherein: each mounting window (3) is symmetrically provided with locking notches corresponding to the rotating contact positions of the rollers (2), each locking notch is inwards and outwards recessed from the end face of the retainer (1) to form a guide transition surface, and the guide transition surface slants to the middle position of the thickness direction of the retainer (1) and slantly points to one side face of the mounting window (3) corresponding to the outer diameter check ring (1-1) or the inner diameter check ring (1-2).

5. A low-friction highly-lubricated thrust roller bearing according to claim 4, wherein: the end faces of the two sides of each locking notch corresponding to the retainer (1) are symmetrically provided with guide transition faces, and the guide transition faces of the two side end faces of each locking notch corresponding to the retainer (1) are connected to form a V-shaped structure.

6. A low-friction high-lubrication thrust roller bearing as set forth in claim 1, wherein: the outer diameter retainer ring (1-1), the inner diameter retainer ring (1-2) and the cross beam (1-3) are of an integrally formed structure.