Self-lubricating bearing

Abstract

The utility model relates to the technical field of bearings, in particular to a self-lubricating bearing which comprises two half bearings which are folded, a shaft passing hole is formed in the center of each half bearing, and a plurality of circumferential groove sections and a plurality of lubricating grooves are concavely formed in the inner side of each half bearing. A plurality of circumferential groove sections and a plurality of lubricating grooves are arranged around the central axis of the shaft passing hole at intervals in an annular array mode, the circumferential groove sections are communicated with the shaft passing hole through the lubricating grooves, a plurality of involution convex teeth and a plurality of involution tooth grooves are arranged on the periphery of the inner side of the half bearing, and each involution tooth groove is located between every two adjacent involution convex teeth. And when the two half bearings are oppositely combined, the oppositely combined convex teeth of one half bearing are inserted into the oppositely combined tooth grooves of the other half bearing. The two half-side bearings are the same in structure, convenient to produce and manufacture, good in interchangeability and capable of lubricating the rotating shaft, the two half-side bearings are meshed through the involution convex teeth and the involution tooth grooves when involution is conducted, assembling is convenient and fast, and lubricating oil can be stored in the circumferential groove section easily.

Description

Technical Field

[0001] The utility model relates to the technical field of bearings, in particular to a self-lubricating bearing. Background Art

[0002] Among the existing patents, the Chinese patent document with application number 96201312.9 discloses a sliding oil-free lubricated spherical bearing suitable for various machines without adding lubricants, which is composed of a thick-walled spherical backing layer and a metal-based composite layer, and the metal-based composite layer is located in the middle hole of the thick-walled spherical backing layer. The spherical bearing of the patent is an integrated structure.

[0003] In addition, in the current patent, the Chinese patent document with application number 202122115772.8 discloses an inner ring of a spherical roller bearing, including a ring body A and a ring body B, a concave arc-shaped outer wall A is provided on one side of the outer wall A of the ring body A, and a bevel A is provided on the other side of the outer wall A of the ring body A, a concave arc-shaped outer wall B is provided on one side of the outer wall B of the ring body B, and a bevel B is provided on the other side of the outer wall B of the ring body B, the ring body A and the ring body B are relatively fixedly arranged, and the bevel A and the bevel B are connected to form a "V"-shaped annular groove, and the concave arc-shaped outer wall A and the concave arc-shaped outer wall B have the same curvature and are symmetrically arranged; the inner ring of the spherical roller bearing has a plurality of through holes spaced around the axis of the ring body B between the two bottom surfaces of the ring body B, and a plurality of screw holes are provided on the ring body A corresponding to the plurality of through holes, and a plurality of screws are respectively passed through the plurality of through holes and screwed with the plurality of screw holes. Although the patent document is composed of a ring body A and a ring body B, the ring body A and the ring body B need to be locked together by screws, which makes disassembly and assembly troublesome and does not have a lubrication function. Utility Model Content

[0004] In order to solve the above technical problems, the purpose of the utility model is to provide a self-lubricating bearing.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A self-lubricating bearing comprises two mating half bearings, wherein an axial hole is provided at the center of the half bearings, and a plurality of circumferential groove segments and a plurality of lubrication grooves are concavely arranged on the inner side of the half bearings, wherein the plurality of circumferential groove segments are respectively arranged at intervals with the plurality of lubrication grooves, and the plurality of circumferential groove segments and the plurality of lubrication grooves are arranged in a circular array around the central axis of the axial hole, and the circumferential groove segments are connected with the axial hole via the lubrication grooves, and a plurality of mating convex teeth and a plurality of mating tooth grooves are arranged on the inner periphery of the half bearings, and each mating tooth groove is located between two adjacent mating convex teeth; when the two half bearings are mating, the mating convex teeth of one half bearing are inserted into the mating tooth groove of the other half bearing.

[0007] Furthermore, a convex buckle is convexly provided on the inner side of the tooth end of the mating convex tooth, and a buckle groove which is engaged with the convex buckle is concavely provided inwardly at the groove bottom of the mating tooth groove.

[0008] Furthermore, a spherical surface is arranged on the outer peripheral side of the half bearing; when the two half bearings are matched, a plane section is formed at the matching position of the two half bearings, the plane section is connected to the tangent of the spherical surface, and the matching tooth grooves and the matching convex teeth are located at the plane section.

[0009] Furthermore, when the two half bearings are mated, the multiple lubrication grooves of one half bearing are respectively arranged in an offset manner with the multiple lubrication grooves of the other half bearing.

[0010] Furthermore, when the two half bearings are matched, the multiple lubrication grooves of one half bearing are respectively connected to the multiple lubrication grooves of the other half bearing.

[0011] Furthermore, the half bearing is a plastic part.

[0012] The beneficial effects of the utility model are as follows: during assembly, after the two half-bearings are matched, the matching convex teeth of the two half-bearings are matched with the matching tooth grooves, the lubricating oil is stored in the circumferential groove section, and the lubricating oil can flow in the circumferential groove section. When in use, the self-lubricating bearing is installed on the external bearing seat, and the external rotating shaft rotates through the through-axis hole of the self-lubricating bearing. During the rotation of the rotating shaft in the through-axis hole, the lubricating oil in the circumferential groove section will be supplied to the rotating shaft through the lubrication groove to lubricate the rotating shaft. The two half-bearings of the utility model have the same structure, are easy to produce and manufacture, have good interchangeability, can lubricate the rotating shaft, and when the two half-bearings are matched, the matching convex teeth and the matching tooth grooves are engaged, which is convenient for assembly and is conducive to storing the lubricating oil in the circumferential groove section. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0014] Figure 2 It is a schematic diagram of the exploded structure of the utility model.

[0015] Description of reference numerals:

[0016] 1. Half bearing; 2. Through-axis hole; 3. Circumferential groove section; 4. Lubrication groove; 5. Matching convex teeth; 6. Matching tooth grooves; 7. Convex buckle; 8. Buckle groove; 9. Spherical surface; 10. Flat section. DETAILED DESCRIPTION

[0017] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with embodiments and drawings. The contents mentioned in the implementation modes are not intended to limit the present invention.

[0018] like Figure 1 and Figure 2As shown, the utility model provides a self-lubricating bearing, which includes two mating half bearings 1. The two half bearings 1 have the same structure. An axial hole 2 is provided at the center of the half bearing 1. A plurality of circumferential groove segments 3 and a plurality of lubrication grooves 4 are recessed on the inner side of the half bearing 1. The plurality of circumferential groove segments 3 are respectively arranged at intervals with the plurality of lubrication grooves 4. The plurality of circumferential groove segments 3 and the plurality of lubrication grooves 4 are arranged in a ring array around the central axis of the axial hole 2. The circumferential groove segments 3 are connected with the axial hole 2 via the lubrication grooves 4. A plurality of mating convex teeth 5 and a plurality of mating tooth grooves 6 are provided on the inner periphery of the half bearing 1. Each mating tooth groove 6 is located between two adjacent mating convex teeth 5. When the two half bearings 1 are mated, the mating convex teeth 5 of one half bearing 1 are inserted into the mating tooth groove 6 of the other half bearing 1.

[0019] During assembly, after the two half-bearings 1 are matched, the matching convex teeth 5 of the two half-bearings 1 are matched with the matching tooth grooves 6, and the lubricating oil is stored in the circumferential groove section 3, and the lubricating oil can flow in the circumferential groove section 3. When in use, the self-lubricating bearing is installed on the external bearing seat, and the external rotating shaft rotates through the through-shaft hole 2 of the self-lubricating bearing. During the rotation of the rotating shaft in the through-shaft hole 2, the lubricating oil in the circumferential groove section 3 will be supplied to the rotating shaft through the lubricating groove 4 to lubricate the rotating shaft. The two half-bearings 1 of the utility model have the same structure, are easy to produce and manufacture, have good interchangeability, can lubricate the rotating shaft, and when the two half-bearings 1 are matched, the matching convex teeth 5 are engaged with the matching tooth grooves 6, which is convenient to assemble and is conducive to storing the lubricating oil in the circumferential groove section 3.

[0020] In this embodiment, when the two half bearings 1 are matched, the multiple lubrication grooves 4 of one half bearing 1 are staggered with the multiple lubrication grooves 4 of the other half bearing 1. Since the multiple lubrication grooves 4 on the two half bearings 1 are staggered, the rotating shaft can be lubricated more evenly, and the lubrication effect is better.

[0021] In another embodiment, when the two half bearings 1 are matched, the multiple lubrication grooves 4 of one half bearing 1 are respectively connected to the multiple lubrication grooves 4 of the other half bearing 1 .

[0022] In this embodiment, a convex buckle 7 is convexly provided on the inner side of the tooth end of the mating convex tooth 5, and a buckle groove 8 is concavely provided inwardly at the groove bottom of the mating tooth groove 6 to be buckled with the convex buckle 7. After the two half-bearings 1 are mated, not only the mating convex tooth 5 cooperates with the mating tooth groove 6, but also the convex buckle 7 is buckled with the buckle groove 8, so that the two half-bearings 1 can be firmly mated together.

[0023] In this embodiment, a spherical surface 9 is provided on the outer peripheral side of the half bearing 1; when the two half bearings 1 are matched, a plane section 10 is formed at the matching position of the two half bearings 1, and the plane section 10 is tangentially connected to the spherical surface 9, and the matching tooth grooves 6 and the matching convex teeth 5 are located on the plane section 10. In actual use, a spherical hole is provided in the bearing seat, and the self-lubricating bearing is installed in the spherical hole of the bearing seat. The spherical surface 9 of the half bearing 1 coincides with the inner wall of the spherical hole of the bearing seat, which plays a centering role. A space is formed between the plane section 10 and the inner wall of the spherical hole. If there are problems such as processing errors in the half bearing 1, the plane section 10 of the two half bearings 1 after matching may appear uneven. The position of the unevenness is within the above-mentioned space, which not only facilitates the assembly of the self-lubricating bearing and the bearing seat, but also does not increase the friction between the self-lubricating bearing and the bearing seat. When the rotating shaft is slightly eccentric or the two ends of the rotating shaft are not centered, the self-lubricating bearing will move or rotate appropriately to cooperate, which is conducive to the normal rotation of the rotating shaft.

[0024] Specifically, the outer side surface of the half bearing 1 is a plane.

[0025] In this embodiment, the half bearing 1 is a plastic part, and the material of the plastic part is nylon or PE material. The self-lubricating bearing is made of plastic, which is low in cost and light in weight, plays a role in noise reduction during operation, and the plastic has a certain elasticity, which is conducive to the stable buckle 7 and the buckle groove 8 buckling together.

[0026] In addition, the lubrication groove 4 and / or the circumferential groove segment 3 can collect plastic debris generated by friction to a certain extent, thereby preventing the debris from causing further wear of the utility model.

[0027] Specifically, the inner wall of the through-shaft hole 2 is coated with a wear-resistant coating, which is made of a wear-resistant material and has a thickness of 1 mm, thereby improving the wear resistance of the half bearing 1 and extending its service life.

[0028] All technical features in this embodiment can be freely combined according to actual needs.

[0029] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the present technical solution is within the protection scope of the present invention.

Claims

1. A self-lubricating bearing, characterized in that: The invention comprises two mating half bearings (1), wherein a through-axis hole (2) is provided at the center of the half bearing (1), and a plurality of circumferential groove segments (3) and a plurality of lubricating grooves (4) are concavely arranged on the inner side of the half bearing (1), wherein the plurality of circumferential groove segments (3) are arranged at intervals from the plurality of lubricating grooves (4), and the plurality of circumferential groove segments (3) and the plurality of lubricating grooves (4) are arranged in a ring array around the central axis of the through-axis hole (2), and the circumferential groove segments (3) are connected to the through-axis hole (2) via the lubricating groove (4), and a plurality of mating convex teeth (5) and a plurality of mating tooth grooves (6) are arranged on the inner periphery of the half bearing (1), and each mating tooth groove (6) is located between two adjacent mating convex teeth (5); when the two half bearings (1) are mating, the mating convex teeth (5) of one half bearing (1) are inserted into the mating tooth groove (6) of the other half bearing (1).

2. A self-lubricating bearing according to claim 1, characterized in that: A convex buckle (7) is convexly provided on the inner side of the tooth end of the mating convex tooth (5), and a buckle groove (8) which is buckled with the convex buckle (7) is concavely provided inwardly at the groove bottom of the mating tooth groove (6).

3. A self-lubricating bearing according to claim 1, characterized in that: A spherical surface (9) is arranged on the outer peripheral side of the half bearing (1); when the two half bearings (1) are matched, a plane section (10) is formed at the matched position of the two half bearings (1), the plane section (10) is tangentially connected to the spherical surface (9), and the matched tooth groove (6) and the matched convex tooth (5) are located at the plane section (10).

4. A self-lubricating bearing according to claim 1, characterized in that: When the two half bearings (1) are matched, the multiple lubrication grooves (4) of one half bearing (1) are respectively arranged in a staggered manner with the multiple lubrication grooves (4) of the other half bearing (1).

5. The self-lubricating bearing according to claim 1, characterized in that: When the two half bearings (1) are matched, the multiple lubrication grooves (4) of one half bearing (1) are respectively connected to the multiple lubrication grooves (4) of the other half bearing (1).

6. A self-lubricating bearing according to any one of claims 1 to 5, characterized in that: The half bearing (1) is a plastic part.

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