CN216922855U - Notch type rod end joint bearing - Google Patents
Notch type rod end joint bearing Download PDFInfo
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- CN216922855U CN216922855U CN202123172161.3U CN202123172161U CN216922855U CN 216922855 U CN216922855 U CN 216922855U CN 202123172161 U CN202123172161 U CN 202123172161U CN 216922855 U CN216922855 U CN 216922855U
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Abstract
The utility model provides a notch-type rod end joint bearing, which comprises a rod end body and a bearing inner ring, wherein the rod end body is provided with a bearing inner ring; the rod end body comprises a head part and a rod part, the head part is provided with an installation through hole and two notch grooves, and the side wall of the installation through hole is an arc surface; the notch groove is arranged at one end of the mounting through hole and is communicated with the mounting through hole; the shape of the notch groove is matched with that of the mounting through hole, and the two notch grooves are symmetrically arranged along the axis of the mounting through hole; the outer surface of the bearing inner ring comprises a curved surface, and the bearing inner ring is installed in the installation through hole through the notch groove. According to the utility model, the side wall of the mounting through hole on the head part of the rod end body is designed into an arc surface, and the two notch grooves are matched, so that the bearing inner ring can be directly mounted into the mounting through hole, the bearing outer ring is omitted, the number of parts is reduced, the reliability is improved, the design range of the ball diameter of the inner ring can be enlarged, and the bearing capacity of the bearing is improved.
Description
Technical Field
The utility model relates to the technical field of bearings, in particular to a notch-type rod end joint bearing.
Background
The rod end joint bearing is also called a fisheye joint, is formed by assembling a rod end body, a bearing outer ring and a bearing inner ring, and is mainly applied to swinging motion, tilting motion and rotary motion with low speed. When the rod end oscillating bearing is assembled, a bearing inner ring is required to be installed in the rod end body through a bearing outer ring, the number of assembling parts is large, the assembling process is complex, the size of the bearing inner ring is compressed to a certain extent due to the existence of the bearing outer ring, and the bearing capacity of the bearing is limited.
Patent document CN110735855A discloses a dust-proof rod end joint bearing and a method for producing the same, the dust-proof rod end joint bearing includes: the rod end body is provided with a rod end eye hole; the bearing comprises a bearing outer ring, a bearing inner ring and a dust cover; the dust cover comprises an inner edge and an outer edge which are positioned in the ring body and on the periphery; the inner edge supporting structure is arranged close to the bearing inner ring, and the outer edge supporting structure is arranged close to the bearing outer ring; the outer edge supporting structure comprises a fixed supporting ring, the fixed supporting ring is fixed on the rod end body or on the bearing outer ring or between the rod end body and the bearing outer ring, and the fixed supporting ring is clamped and fixed by the rod end body and the bearing outer ring; the inner circumferential surface and/or the outer circumferential surface of the fixed support ring are/is provided with fixed matching surfaces which are used for being fixedly and hermetically connected with the outer edge of the dust cover, and a circumferential surface seal is formed between the dust cover and the fixed support ring. However, the scheme still adopts the assembly mode of the rod end body, the bearing outer ring and the bearing inner ring, and the problems in the prior art are still avoided.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model aims to provide a notch-type rod end joint bearing.
The notch-type rod end joint bearing is characterized by comprising a rod end body and a bearing inner ring; the rod end body comprises a head part and a rod part, and the head part is connected with one end of the rod part;
the head is provided with an installation through hole and two notch grooves, and the side wall of the installation through hole is an arc surface;
the notch groove is arranged at one end of the mounting through hole and is communicated with the mounting through hole; the shape of the notch groove is matched with that of the mounting through hole, and the two notch grooves are symmetrically arranged along the axis of the mounting through hole;
the outer surface of the bearing inner ring comprises a curved surface, and the outer diameter of the bearing inner ring is smaller than the diameter of the notch groove;
the bearing inner ring is arranged in the mounting through hole through the notch groove.
Preferably, the inner surface of the bearing inner ring is a cylindrical surface.
Preferably, the rod part is provided with threads, and the head part is in tangential transition connection with the rod part.
Preferably, the head is connected tangentially to the shaft in a transition manner.
Preferably, the bearing rod end body and the bearing inner ring are made of high-temperature alloy or low-temperature resistant material.
Preferably, the materials of the bearing rod end body and the bearing inner ring are GH4169, GH2132 and GH 4202.
Preferably, the axial play of the mounting through hole is 30 to 100 μm when a load of 5kg is measured.
Preferably, the cylindrical surface of the inner surface of the bearing inner ring has the size of
The sphere diameter size of the outer surface is phi 16 +/-0.025 mm.
Preferably, the thread size of the rod part is M10-6 h.
Preferably, when the measuring load is 5kg, the axial clearance of the mounting through hole is 30-100 μm;
the cylindrical surface of the inner surface of the bearing inner ring has the size of
The diameter size of the outer surface sphere is phi 16 +/-0.025 mm;
the thread size of the rod part is M10-6 h;
the size from the outer side of the notch groove to the circular shape of the mounting through hole is
The width dimension w of the notch groove is
The depth h of the notch groove is
The round size of the milling cutter is phi 4 mm.
Compared with the prior art, the utility model has the following beneficial effects:
1. according to the utility model, the side wall of the mounting through hole on the head part of the rod end body is designed into an arc surface, and the two notch grooves are matched, so that the bearing inner ring can be directly mounted into the mounting through hole, the bearing outer ring is omitted, the number of parts is reduced, the reliability is improved, the design range of the ball diameter of the inner ring can be enlarged, and the bearing capacity of the bearing is improved.
2. The end joint bearing can be made of high-temperature-resistant or low-temperature-resistant materials, so that the end joint bearing meets more use environments.
Drawings
Other features, objects and advantages of the utility model will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic front view of a rod end body according to the present invention;
FIG. 2 is a schematic sectional view taken along line A-A of FIG. 1;
FIG. 3 is a schematic view of the inner race structure of the bearing of the present invention;
FIG. 4 is a schematic front view of the overall structure of the present invention;
FIG. 5 is a schematic side sectional view of the overall structure of the present invention.
The figures show that:
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the utility model, but are not intended to limit the utility model in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the utility model. All falling within the scope of the present invention.
Example 1:
the utility model provides a notch-type rod end joint bearing, which comprises a rod end body 1 and a bearing inner ring 2;
the rod end body 1 comprises a head part 5 and a rod part 6, and the head part 5 is connected with one end of the rod part 6; in a preferred embodiment, the head 5 is connected tangentially to the shaft 6 in a transitional manner.
The head part 5 is provided with a mounting through hole 3 and two notch grooves 4, the side wall of the mounting through hole 3 is an arc surface 8, and the side wall of the arc surface defining the mounting through hole 3 is an inner arc surface of the rod end body 1; the notch groove 4 is arranged at one end of the mounting through hole 3 and is communicated with the mounting through hole 3, and in a preferred embodiment, the depth of the notch groove 4 is less than or equal to half of the depth of the mounting through hole 3; the shape of the notch groove 4 is matched with that of the mounting through hole 3, the two notch grooves 4 are symmetrically arranged along the axis of the mounting through hole 3, and as shown in fig. 1 and 2, the notch grooves 4 extend along the thickness direction of the head 5.
The outer surface of the bearing inner ring 2 comprises a curved surface 7, and the diameter of the outer surface of the bearing inner ring 2 is smaller than that of the notch groove 4; the bearing inner ring 2 is arranged in the mounting through hole 3 through a notch groove 4. The inner surface of the bearing inner ring 2 is a cylindrical surface, and the inner surface of the bearing inner ring 2 is in transition fit with external equipment or parts. The rod part 6 is provided with threads for connecting with external equipment or parts. The curved surface 7 is matched with the arc surface side wall of the mounting through hole 3 in shape. In a preferred embodiment, the curved surface is a portion of a spherical surface. When the bearing inner ring 2 is installed in the installation through hole 3 through the notch groove 4, any one of the outer diameter directions of the bearing inner ring 2 is adjusted to be collinear with the axis of the bearing inner ring 2, then the bearing inner ring 2 is inserted into the installation through hole 3 through the notch groove 4 in the axis direction of the notch groove 4, then the bearing inner ring 2 rotates in the installation through hole 3, so that the bearing inner ring 2 is parallel to the installation through hole 3, and at the moment, the bearing inner ring 2 can be in transition fit connection with external equipment or parts through the inner surface of the bearing inner ring 2.
In a preferred example, the circular arc side wall of the mounting through hole 3 is formed by machining, namely turning → grinding → ultra-finishing, and the surface roughness of the circular arc side wall of the mounting through hole 3 can be controlled to be less than ra0.16.
In a preferred example, the material of the bearing rod end body 1 and the bearing inner ring 2 is high-temperature alloy or low-temperature resistant material. Preferably, the materials of the bearing rod end body 1 and the bearing inner ring 2 include, but are not limited to GH4169, GH2132 and GH 4202. According to the utility model, the notch type rod end joint bearing can play roles of aligning, resisting abrasion, bearing radial load, connecting a supporting piece and the like in different special environments such as low-temperature environment and the like according to different materials, and the strength and the dimensional stability of the notch type rod end joint bearing in the special environments such as the low-temperature environment and the like are ensured.
The cryogenic environment includes, but is not limited to, a cryogenic liquid oxygen environment, a cryogenic liquid nitrogen environment, a cryogenic liquid argon environment, a liquefied natural gas environment, and the like. The notch type low-temperature rod end joint bearing works in the environment of low-temperature liquid oxygen of-183 ℃,
the gap type rod end joint bearing ensures a bearing clearance value by match grinding of the inner arc surface of the rod end body.
Example 2:
example 2 is a preferred example of example 1.
The cylindrical surface of the inner surface of the bearing inner ring 2 has the size of
The sphere diameter size of the outer surface is phi 16 +/-0.025 mm. The thread size of the rod part 6 is M10-6 h. The diameter of the circle formed by the outer side 9 of the notch groove and the center of the mounting through hole 3 is
The width dimension w of the notch groove 4 is
The depth h of the notch groove 4 is
The round size of the milling cutter is phi 4 mm. The diameter of the circle formed by the outer side 9 of the notch groove and the center of the mounting through hole 3 is
Namely, the distance between the outer sides of the two notch grooves along the diameter direction of the mounting through hole 3 is
The bearing inner ring 2 is installed in the installation through hole 3 through a notch groove 4, and when a load is measured to be 5kg, the axial clearance of the installation through hole 3 is 30-100 mu m. The bearing rod end body 1 and the bearing inner ring 2 are made of GH4169 materials, and the hardness of the inner ring after heat treatment is 39-42 HRC.
The utility model has compact structure and can be used in low-temperature liquid environment. In order to make the rod end joint bearing compact in structure and reduce the number of parts, the side wall of the mounting through hole 3 on the head of the rod end body is designed into the arc surface 8 and matched with the two notch grooves 4, so that the bearing inner ring can be directly mounted in the mounting through hole 3, the bearing outer ring is omitted, the number of parts is reduced, the reliability is improved, the design range of the ball diameter of the inner ring can be enlarged, and the bearing capacity is improved. In addition, after the notch type low-temperature rod end joint bearing provided by the utility model is connected with external equipment or parts, the residual stress caused by deformation inconsistency and plastic deformation caused by extrusion and roll forming of the external equipment or parts can be avoided. The utility model meets the high precision requirement of the bearing, and the bearing inner ring has high arc surface integrity and larger space in size design.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the utility model. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (10)
1. A notch-type rod end joint bearing is characterized by comprising a rod end body (1) and a bearing inner ring (2);
the rod end body (1) comprises a head part (5) and a rod part (6), and the head part (5) is connected with one end of the rod part (6);
the head (5) is provided with a mounting through hole (3) and two notch grooves (4), and the side wall of the mounting through hole (3) is an arc surface (8);
the notch groove (4) is arranged at one end of the mounting through hole (3) and is communicated with the mounting through hole (3); the shape of the notch grooves (4) is matched with that of the mounting through hole (3), and the two notch grooves (4) are symmetrically arranged along the axis of the mounting through hole (3);
the outer surface of the bearing inner ring (2) comprises a curved surface (7), and the outer diameter of the bearing inner ring (2) is smaller than that of the notch groove (4);
the bearing inner ring (2) is installed in the installation through hole (3) through the notch groove (4).
2. Notched rod end spherical plain bearing according to claim 1, wherein the inner surface of the inner bearing ring (2) is cylindrical.
3. Notched rod end spherical plain bearing according to claim 1, wherein the rod (6) is provided with a thread and the head (5) is in tangential transition with the rod (6).
4. Notched rod end spherical plain bearing according to claim 1, characterized in that the head (5) is in tangential transition with the rod (6).
5. The notched rod end spherical plain bearing according to claim 1, wherein the rod end body (1) and the bearing inner race (2) are made of a high temperature alloy or a low temperature resistant material.
6. The notch type rod end spherical plain bearing according to claim 5, wherein the material of the rod end body (1) and the bearing inner ring (2) is GH4169, GH2132 and GH 4202.
7. The notched rod end spherical plain bearing according to claim 1, wherein the axial play of the mounting through-hole (3) is 30 to 100 μm when a load of 5kg is measured.
8. Notched rod end spherical plain bearing according to claim 1, characterized in that the inner surface of the bearing inner race (2) has a cylindrical surface dimension of
The sphere diameter size of the outer surface is phi 16 +/-0.025 mm.
9. Notched rod end knuckle bearing according to claim 1, characterized in that the thread size of the rod part (6) is M10-6 h.
10. The notched rod end spherical plain bearing according to claim 1, wherein the axial play of the mounting through-hole (3) is 30 to 100 μm when a load of 5kg is measured;
the cylindrical surface of the inner surface of the bearing inner ring (2) has the size of
The size of the sphere diameter of the outer surface is phi 16 +/-0.025 mm;
the thread size of the rod part (6) is M10-6 h;
the diameter of a circle formed by the outer side (9) of the notch groove and the center of the mounting through hole (3) is
The width dimension w of the notch groove (4) is
The depth h of the notch groove (4) is
The round size of the milling cutter is phi 4 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123172161.3U CN216922855U (en) | 2021-12-16 | 2021-12-16 | Notch type rod end joint bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123172161.3U CN216922855U (en) | 2021-12-16 | 2021-12-16 | Notch type rod end joint bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216922855U true CN216922855U (en) | 2022-07-08 |
Family
ID=82251630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123172161.3U Active CN216922855U (en) | 2021-12-16 | 2021-12-16 | Notch type rod end joint bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216922855U (en) |
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2021
- 2021-12-16 CN CN202123172161.3U patent/CN216922855U/en active Active
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