CN218266826U

CN218266826U - Self-lubricating joint bearing

Info

Publication number: CN218266826U
Application number: CN202222148657.5U
Authority: CN
Inventors: 王能仓; 王雨哲
Original assignee: Jiangsu Cheneng Technology Co ltd
Current assignee: Jiangsu Cheneng Technology Co ltd
Priority date: 2022-08-15
Filing date: 2022-08-15
Publication date: 2023-01-10
Anticipated expiration: 2032-08-15

Abstract

The utility model relates to a self-lubricating joint bearing, which comprises a center ball and an outer ring which are matched with each other; the bearing further comprises a rod and an inner sleeve; the rod is of a cylindrical structure; the inner sleeve is of a cylindrical structure, and cylindrical hollow parts penetrating through two end faces of the inner sleeve are arranged along the axial direction of the inner sleeve; the inner diameter of the inner sleeve is larger than the outer diameter of the rod, and the rod penetrates through the cylindrical hollow part of the inner sleeve to form clearance fit with the inner sleeve; a cylindrical hollow part taking the sphere diameter of the central sphere as an axis is arranged in the central sphere; the inner sleeve passes through the cylindrical hollow portion of the center ball and is fitted with the center ball. The inner sleeve of the self-lubricating joint bearing is in clearance fit with the rod, so that the inner sleeve can slide on the rod along the central line, and the outer wall of the inner sleeve is connected with the inner wall of a central ball matched with the outer ring of the joint bearing to realize rotation, so that the joint bearing has a rotation function and can also realize linear sliding.

Description

Self-lubricating joint bearing

Technical Field

The utility model relates to a bearing field especially relates to a self-lubricating joint bearing.

Background

The joint bearing is a spherical sliding bearing, the sliding contact surfaces of which are an inner spherical surface and an outer spherical surface, can rotate and swing at any angle during movement, and can bear larger load. According to different types and structures, the bearing can bear radial load, axial load or combined load existing in the radial direction and the axial direction simultaneously.

The joint bearing is widely used in the industries of engineering hydraulic oil cylinders, press beds, engineering machinery, automation equipment, automobile shock absorbers, hydraulic machinery and the like.

For the traditional joint bearing, the joint bearing node only has the in-plane and out-plane rotation performance and does not have the sliding performance, namely, only single steering motion can be provided, and the requirement of large slippage of more and more existing building engineering cannot be met.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a self-lubricating joint bearing, has solved among the prior art function singleness and has only possessed the traditional joint bearing who turns to the function and be suitable for the narrow problem of face.

The technical scheme adopted by the embodiment of the application is as follows:

a self-lubricating spherical plain bearing, the bearing comprising a central ball and an outer race which cooperate with each other; the bearing further comprises a rod and an inner sleeve; the rod is of a cylindrical structure; the inner sleeve is of a cylindrical structure, and cylindrical hollow parts penetrating through two end faces of the inner sleeve are arranged along the axial direction of the inner sleeve; the inner diameter of the inner sleeve is larger than the outer diameter of the rod, and the rod penetrates through the cylindrical hollow part of the inner sleeve to form clearance fit with the inner sleeve; a cylindrical hollow part taking the sphere diameter of the central sphere as an axis is arranged in the central sphere; the inner sleeve passes through the cylindrical hollow portion of the center ball and is engaged with the center ball.

Furthermore, the outer ring is of a cylindrical structure, and a spherical hollow part which takes the central point of the outer ring as a sphere center is arranged in the outer ring; the inner sphere diameter of the outer ring is larger than the outer sphere diameter of the central sphere; the center ball is mounted in the spherical hollow portion of the outer ring and is fitted with the outer ring.

Furthermore, a layer of lubricating material is attached to the inner wall of the inner sleeve.

Further, the fit between the inner sleeve and the central ball is interference fit.

Furthermore, a friction pair is arranged between the outer ring and the central ball.

Furthermore, the bearing also comprises an outer sleeve, wherein the outer sleeve is of a cylindrical structure, and cylindrical hollow parts penetrating through two end faces of the outer sleeve are arranged along the axial direction of the outer sleeve; the inner diameter of the outer sleeve is larger than the outer diameter of the outer ring, and the outer ring penetrates through the cylindrical hollow part of the outer sleeve to be matched with the outer sleeve.

Furthermore, a layer of lubricating material is attached to the inner wall of the outer sleeve.

Further, the bearing also comprises a rubber ring, and the rubber ring comprises a first rubber ring and a second rubber ring; the first rubber ring and the second rubber ring are respectively arranged at two ends of the inner sleeve.

One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

(1) The inner sleeve of the self-lubricating joint bearing is in clearance fit with the rod, so that the inner sleeve can slide on the rod along the central line, and the outer wall of the inner sleeve is connected with the inner wall of a central ball which is matched with the outer ring of the joint bearing to realize rotation, so that the joint bearing has a rotation function and can also realize linear sliding.

(2) The inner wall of the inner sleeve matched with the rod is attached with a self-lubricating material, so that the smoothness of the inner sleeve sliding on the rod is further ensured.

(3) The interference fit of the inner sleeve and the central ball ensures that the two functional structures are tightly connected, and the internal structure of the whole mechanism is tightly connected.

(4) A friction pair made of a self-lubricating material is arranged between the outer ring and the central ball, so that the movement performance of the joint bearing is enhanced, and the service life of the joint bearing can be prolonged.

(5) The bearing outer ring is matched with the outer sleeve, and the integral structure is placed in the outer sleeve to play a dustproof role.

(6) The inner wall of the outer sleeve matched with the outer ring is attached with a self-lubricating material, so that the outer sleeve and the outer ring can freely slide, and the axial impact force generated when the joint bearing works is further reduced.

(7) The two rubber rings are respectively arranged at the two ends of the inner sleeve, so that the inner sleeve slides to drive the rubber rings at the two ends, and the rubber rings play a role of buffering during linear motion.

Drawings

Fig. 1 is a cross-sectional structure view of a front view of the self-lubricating spherical plain bearing of the present invention.

In the figure: 1. a rod; 2. a first rubber ring; 3. an outer ring; 4. a jacket; 5. a friction pair; 6. a center ball; 7. an inner sleeve; 8. and a second rubber ring.

Detailed Description

The embodiment of the application provides a self-lubricating joint bearing, has solved among the prior art problem that the function singleness only possesses the traditional joint bearing who turns to the function and is suitable for the face narrow.

In order to solve the above problems, the technical solution in the embodiment of the present application has the following general idea:

the sliding combination device with the inner sleeve and the rod is used for achieving the effect of increasing the linear sliding function of the traditional knuckle bearing, strengthening the functionality of the traditional knuckle bearing and widening the application range.

In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.

The specific structure of the embodiment of the application is as follows:

fig. 1 is a cross-sectional structure view of a front view of the self-lubricating spherical plain bearing of the present invention. As shown in fig. 1, the outer ring 3 of the self-lubricating spherical plain bearing has a cylindrical structure, and a spherical hollow portion having a center point of the outer ring 3 as a spherical center is formed therein. Specifically, the outer ring 3 is a cylinder, the sphere diameter of the inner hollow part is larger than that of the central sphere 6, and the column height of the outer ring 3 is smaller than that of the central sphere 6. The center ball 6 is matched with the outer ring 3 through a spherical hollow part in the outer ring 3, and a friction pair 5 is arranged in a gap between the outer ring 3 and the center ball 6. The friction pair 5 is made of a self-lubricating material, so that the motion performance of the joint bearing can be improved, and the service life of the joint bearing is prolonged. Specifically, the length of the friction pair 5 is smaller than the column height of the outer ring 3. An inner sleeve 7 with a cylindrical structure is also arranged. Specifically, the inner sleeve 7 has a cylindrical shape. The central ball 6 is internally provided with a cylindrical hollow part which takes the ball diameter as the axis and penetrates through the ball body of the central ball 6, and the inner sleeve 7 penetrates through the cylindrical hollow part of the central ball 6 to form interference fit with the central ball 6, so that the inner sleeve and the central ball form a close fit structure, the tight connection of the inner sleeve and the central ball is ensured, and the relative displacement can not occur. In this embodiment, it is preferable that the axial length of the cylindrical hollow portion inside the center ball 6 is smaller than the height of the inner sleeve 7, i.e., the protruding portion needs to be cut off, so as to facilitate the subsequent installation of other components. The bearing further comprises a rod 1 having a cylindrical outer configuration. Specifically, the rod 1 is a cylinder, and a cylindrical hollow part which is coaxial with the outer cylinder and penetrates through two end faces is arranged in the rod. The inner sleeve 7 is provided with a cylindrical hollow part penetrating through two end surfaces along the axial direction, the inner diameter of the inner sleeve 7 is larger than the outer diameter of the rod 1, and the rod 1 penetrates through the cylindrical hollow part of the inner sleeve 7 to form clearance fit with the inner sleeve 7, namely, the rod 1 can freely slide in the inner sleeve 7. The inner wall of the inner sleeve 7, which is matched with the rod 1, is also provided with a layer of lubricating material, so that the inner sleeve 7 can slide on the rod 1 more smoothly. In the embodiment, the lubricating material is preferably a self-lubricating material, and has the advantages of small friction coefficient and less wear of the coating; the height of the rod 1 is larger than that of the inner sleeve 7, so that other parts can be conveniently mounted.

Further, with continuing reference to fig. 1, the spherical plain bearing further includes an outer sleeve 4, where the outer sleeve 4 is a cylindrical structure, and a cylindrical hollow portion penetrating through two end faces of the outer sleeve 4 is disposed along an axial direction of the outer sleeve 4. The inner diameter of the outer sleeve 4 is larger than the outer diameter of the outer ring 3, and the outer ring 3 passes through the cylindrical hollow part of the outer sleeve 4 to be matched with the outer sleeve 4. Specifically, the outer ring 3 and the outer sleeve 4 form clearance fit. A layer of lubricating material is attached to the inner wall of the outer sleeve 4 matched with the outer ring 3 to ensure that the outer ring 3 and the outer sleeve 4 can freely slide, and further, the axial impact force generated when the bearing works is relieved. In this embodiment, the lubricating material is preferably a self-lubricating material, which has the advantage of a low coefficient of friction and low wear of the coating itself.

Further, with continued reference to fig. 1, the inner sleeve 7 and the outer sleeve 4 are made of metal materials, which are suitable for low-load high-speed movement. In this embodiment, copper is used for the inner sleeve 7 and the outer sleeve 4.

Further, please refer to fig. 1, the bearing is provided with a rubber ring, the rubber ring includes a first rubber ring 2 and a second rubber ring 8, and the first rubber ring 2 and the second rubber ring 8 are respectively installed at two ends of the inner sleeve 7. In practice, the rubber ring can be mounted on the inner sleeve 7 by various known means, for example, a slot can be formed at both ends of the inner sleeve 7, and the rubber ring can be matched with the inner sleeve 7 through the slot to fix the rubber ring with the inner sleeve 7. In the embodiment, the mounting structure of the first rubber ring 2 and the second rubber ring 8 is preferably a symmetrical structure, so that the structure is simplified, and the mass is uniformly distributed.

The specific working process of the embodiment of the application is as follows:

referring to fig. 1, in practical use, the self-lubricating spherical plain bearing can realize a rotation function through the cooperation of the outer ring 3 and the central ball 6, and can also realize a linear sliding function through the clearance fit between the inner sleeve 7 and the rod 1. The connection and fastening of the two structures for realizing the two functions are realized through the interference fit structure of the inner sleeve 7 and the central ball 6.

The above description is for the purpose of explanation and not limitation of the invention, which is defined in the claims, and any modifications may be made without departing from the basic structure of the invention.

Claims

1. A self-lubricating joint bearing which is characterized in that: the bearing comprises a central ball (6) and an outer ring (3) which are matched with each other; the bearing further comprises a rod (1) and an inner sleeve (7); the rod (1) is of a cylindrical structure; the inner sleeve (7) is of a cylindrical structure, and cylindrical hollow parts penetrating through two end faces of the inner sleeve (7) are arranged along the axial direction of the inner sleeve (7); the inner diameter of the inner sleeve (7) is larger than the outer diameter of the rod (1), and the rod (1) penetrates through the cylindrical hollow part of the inner sleeve (7) to form clearance fit with the inner sleeve (7); a cylindrical hollow part taking the sphere diameter of the central sphere (6) as an axis is arranged in the central sphere (6); the inner sleeve (7) passes through the cylindrical hollow part of the center ball (6) and is engaged with the center ball (6).

2. The self-lubricating spherical plain bearing according to claim 1, wherein: the outer ring (3) is of a cylindrical structure, and a spherical hollow part which takes the central point of the outer ring (3) as a sphere center is arranged in the outer ring; the inner sphere diameter of the outer ring (3) is larger than the outer sphere diameter of the central sphere (6); the center ball (6) is mounted in the spherical hollow part of the outer ring (3) and is matched with the outer ring (3).

3. Self-lubricating spherical plain bearing according to claim 1, wherein a layer of lubricating material is attached to the inner wall of the inner sleeve (7).

4. Self-lubricating spherical plain bearing according to claim 1, characterized in that the fit of the inner sleeve (7) with the central ball (6) is an interference fit.

5. Self-lubricating spherical bearing according to claim 2, characterized in that a friction pair (5) is provided between the outer ring (3) and the central ball (6).

6. The self-lubricating spherical plain bearing according to claim 4, wherein the bearing further comprises an outer sleeve (4), the outer sleeve (4) is of a cylindrical structure, and cylindrical hollow portions penetrating through two end faces of the outer sleeve (4) are arranged in the axial direction of the outer sleeve (4); the inner diameter of the outer sleeve (4) is larger than the outer diameter of the outer ring (3), and the outer ring (3) penetrates through the cylindrical hollow part of the outer sleeve (4) to be matched with the outer sleeve (4).

7. Self-lubricating spherical plain bearing according to claim 6, wherein the inner wall of the outer sleeve (4) is provided with a layer of lubricating material.

8. The self-lubricating spherical plain bearing according to claim 6, wherein the bearing further comprises a rubber ring comprising a first rubber ring (2) and a second rubber ring (8); the first rubber ring (2) and the second rubber ring (8) are respectively arranged at two ends of the inner sleeve (7).