Extrusion type rod end knuckle bearing

Abstract

The utility model discloses an extrusion type rod end knuckle bearing which comprises a rod end body, an inner ring and an outer ring which are adaptively mounted in a bearing mounting hole of the rod end body, and two sealing covers which are respectively positioned on two sides of the rod end body, an extension part is formed at each of two ends of the inner ring, one ends of the two sealing covers are respectively connected to the extension parts on the corresponding sides, and the other ends of the two sealing covers are respectively connected with the rod end body. And the other ends are respectively connected to the corresponding sides of the rod end body. According to the utility model, the extension parts are respectively formed at the two ends of the inner ring, one end of the sealing cover is connected to the rod end body, and the other end of the sealing cover is connected to the extension parts of the inner ring, so that a connecting structure for mounting the sealing cover is not required to be arranged on the outer ring of the bearing and a pin shaft to be assembled; therefore, when the rod end body structure is installed on site, only the pin shaft needs to be assembled, the installation problem of the sealing cover does not need to be considered, the on-site installation steps of the rod end body structure are simplified, and then the assembly efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bearings, in particular to an extruded rod end joint bearing. Background Art

[0002] Chinese document CN201771976U (filing date: July 15, 2010) discloses a self-lubricating rod end bearing. The rod end bearing consists of a rod end body with a rod end eyelet, a self-lubricating radial spherical plain bearing, a sealing ring, a sealing cover, and a locking ring. The rod end eyelet of the rod end body is wider than the outer ring of the radial spherical plain bearing. The radial spherical plain bearing is mounted in the rod end eyelet and positioned centrally. Two sealing rings are also mounted in the rod end eyelet, one at each end of the radial spherical plain bearing. The sealing rings are designed as framed sealing rings, and the sealing rings and the outer ring of the radial spherical plain bearing fit tightly within the rod end eyelet. Grooves for the sealing covers are machined into both end faces of the rod end eyelet of the rod end body. One end of the sealing cover is mounted in the groove on the end face of the rod end body, and the other end is mounted on a shaft that passes through the inner hole of the inner ring of the radial spherical plain bearing. The sealing cover is locked in place with a locking ring. However, one end of the sealing cover of this technical solution needs to be connected and assembled after the shaft is assembled into the inner hole of the inner ring of the radial spherical plain bearing. That is, the sealing cover of the rod end spherical plain bearing cannot be well pre-assembled when leaving the factory to simplify the assembly steps of the rod end spherical plain bearing on site. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the utility model provides an extruded rod end joint bearing, which mainly solves the technical problem that the sealing cover of the existing rod end joint bearing cannot be well pre-assembled when leaving the factory.

[0004] To achieve the above-mentioned purpose, the present invention is realized through the following technical solutions:

[0005] An extruded rod end joint bearing comprises a rod end body and an inner ring and an outer ring adapted to be mounted in the bearing mounting hole of the rod end body, and also comprises two sealing covers respectively located on both sides of the rod end body, wherein an extension portion is formed at each end of the inner ring, and one end of the two sealing covers is respectively connected to the extension portion on the corresponding side, and the other end is respectively connected to the corresponding side of the rod end body.

[0006] Furthermore, the inner ring includes an inner ring body, and the two extensions are integrally formed at both ends of the inner ring body.

[0007] Furthermore, a slot structure for clamping the end of the sealing cover is formed on the extension portion.

[0008] Furthermore, one end of the sealing cover is connected to the slot structure at the end of the sealing cover, and the other end is connected to the end surface of the bearing mounting hole of the rod end body.

[0009] Furthermore, a self-lubricating liner is provided on the inner spherical surface of the outer ring for matching with the outer spherical surface of the inner ring.

[0010] Furthermore, the self-lubricating gasket is a PTFE self-lubricating gasket structure.

[0011] Furthermore, the outer ring is an outer ring structure formed by an extrusion molding process.

[0012] Furthermore, the operating rotation angle range of the inner ring relative to the outer ring is configured to be within ±30°.

[0013] Furthermore, two retaining rings are provided on the inner wall of the bearing mounting hole of the rod end body, respectively corresponding to the two ends of the outer ring.

[0014] The above technical solution has the following advantages or beneficial effects:

[0015] In the extruded rod end joint bearing described in the utility model, an extension portion is formed at each end of the inner ring, and one end of the sealing cover is connected to the rod end body, and the other end is connected to the extension portion of the inner ring. In this way, there is no need to provide a connecting structure on the outer ring of the bearing and the pin shaft to be assembled to install the sealing cover, so that the sealing cover can be well pre-assembled on the rod end body structure. In this way, when the rod end body structure is installed on site, only the pin shaft needs to be assembled, and there is no need to consider the installation problem of the sealing cover, which is conducive to simplifying the on-site installation steps of the rod end body structure and thus improving assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of an embodiment of the present utility model.

[0017] Description of labels:

[0018] 1. Rod end body, 2. Inner ring, 3. Outer ring, 4. Sealing cover, 5. Self-lubricating gasket, 6. Retaining ring, 11. Bearing mounting hole, 21. Extension part, 22. Inner ring body. DETAILED DESCRIPTION

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0021] Please refer to the attached Figure 1One embodiment of the present invention provides an extruded rod end bearing, comprising a rod end body 1, an inner ring 2 and an outer ring 3 adapted to be mounted in a bearing mounting hole 11 of the rod end body 1, and two sealing covers 4 located on either side of the rod end body 1. Each end of the inner ring 2 forms an extension 21. One end of each sealing cover 4 is connected to the extension 21 on the corresponding side, and the other end is connected to the corresponding side of the rod end body 1. It will be appreciated that in this embodiment, by forming an extension 21 on each end of the inner ring 2, and by connecting the sealing covers 4 to the rod end body 1 at one end and the extension 21 of the inner ring 2 at the other end, there is no need to provide a connecting structure between the outer ring 3 of the bearing and the pin to be assembled in order to install the sealing covers 4. This allows the sealing covers 4 to be pre-assembled on the rod end body structure. Consequently, during on-site installation of the rod end body structure, only the pin needs to be assembled, without having to consider the installation of the sealing covers 4. This simplifies the on-site installation steps of the rod end body structure and improves assembly efficiency.

[0022] Please refer to the attached Figure 1 In one preferred embodiment, the inner ring 2 includes an inner ring body 22, with two extensions 21 integrally formed at each end of the inner ring body 22. The extensions 21 are formed with slots for engaging the ends of the sealing cover 4. One end of the sealing cover 4 is connected to the slot at the end of the sealing cover 4, and the other end is connected to the end face of the bearing mounting hole 11 of the rod end 1.

[0023] Please refer to the attached Figure 1 In one preferred embodiment, a self-lubricating gasket 5 is provided on the inner spherical surface of the outer ring 3 to mate with the outer spherical surface of the inner ring 2. The self-lubricating gasket 5 is a PTFE self-lubricating gasket structure. However, those skilled in the art will appreciate that in other embodiments, the self-lubricating gasket 5 may also be made of other conventional materials in the art and is not limited to the specific embodiment disclosed in this embodiment.

[0024] Please refer to the attached Figure 1 In one preferred embodiment, the outer ring 3 is formed through an extrusion process. Because the outer ring 3 is extruded, subsequent processing to form the sealing groove for the seal cover is difficult. In this embodiment, one end of the seal cover is cleverly connected to the rod end 1, and the other end is connected to the extension 21 added to the inner ring 2, ensuring a secure installation of the seal cover 4 on the rod end.

[0025] Please refer to the attached Figure 1 In one preferred embodiment, the working rotation angle range of the inner ring 2 relative to the outer ring 3 is configured to be within ±30°.

[0026] Please refer to the attached Figure 1In one preferred embodiment, two retaining rings 6 are provided on the inner wall of the bearing mounting hole 11 of the rod end body 1, one corresponding to each end of the outer ring 3. In this embodiment, the two retaining rings 6 limit the outer ring 3, thereby further improving its assembly stability within the bearing mounting hole 11 of the rod end body 1.

[0027] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate from the spirit and scope of the technical solutions of the embodiments of the present invention. Therefore, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present invention.

Claims

1. An extruded rod end joint bearing, comprising a rod end body (1) and an inner ring (2) and an outer ring (3) adapted to be mounted in a bearing mounting hole (11) of the rod end body (1), characterized in that: It also includes two sealing covers (4) located on both sides of the rod end body (1), and an extension portion (21) is formed at each end of the inner ring (2). One end of the two sealing covers (4) is connected to the extension portion (21) on the corresponding side, and the other end is connected to the corresponding side of the rod end body (1).

2. The extruded rod end bearing according to claim 1, characterized in that: The inner ring (2) comprises an inner ring body (22), and the two extension parts (21) are integrally formed at both ends of the inner ring body (22).

3. The extruded rod end bearing according to claim 1, characterized in that: A clamping groove structure for clamping the end of the sealing cover (4) is formed on the extension portion (21).

4. The extruded rod end bearing according to claim 3, characterized in that: One end of the sealing cover (4) is connected to the slot structure at the end of the sealing cover (4), and the other end is connected to the end surface of the bearing mounting hole (11) of the rod end body (1).

5. The extruded rod end bearing according to claim 1, characterized in that: A self-lubricating liner (5) is provided on the inner spherical surface of the outer ring (3) for matching with the outer spherical surface of the inner ring (2).

6. The extruded rod end bearing according to claim 5, characterized in that: The self-lubricating liner (5) is a PTFE self-lubricating liner structure.

7. The extruded rod end bearing according to claim 1, characterized in that: The outer ring (3) is an outer ring structure formed by an extrusion molding process.

8. The extruded rod end bearing according to claim 1, characterized in that: The working rotation angle range of the inner ring (2) relative to the outer ring (3) is configured to be within ±30°.

9. The extruded rod end bearing according to any one of claims 1 to 8, characterized in that: Two retaining rings (6) corresponding to the two ends of the outer ring (3) are provided on the inner wall of the bearing mounting hole (11) of the rod end body (1).

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