Centrode joint bearing

Abstract

The utility model discloses a kind of centripetal joint bearings, comprising: inner ring and outer ring, inner ring is sleeved in outer ring, the outer spherical surface of inner ring is matched with the inner spherical surface of outer ring and rotates;Sealing ring is equipped in the annular gap of inner ring and outer ring, and filling cavity is formed between sealing ring and inner ring, outer ring, filling cavity is equipped with lubricating grease, first oil guide channel is equipped between the outer wall and inner wall of inner ring, and first oil guide channel is communicated with filling cavity;Oil injection channel is equipped between the outer wall and inner wall of outer ring, second oil guide channel is equipped between the outer wall and inner wall of inner ring, and second oil guide channel corresponds with oil injection channel.The utility model structure is novel, through the synergistic effect of lubricating oil and lubricating grease, increase the lubrication range to inner wall of inner ring, improve lubrication effect.

Description

Technical Field

[0001] This utility model belongs to the field of spherical bearing technology, and particularly relates to a radial spherical bearing. Background Technology

[0002] As a type of spherical sliding bearing, radial spherical bearings can achieve multi-angle rotation and oscillation due to their inner and outer ring spherical structures, and are widely used in various mechanical structures.

[0003] Existing radial spherical plain bearings have significant shortcomings in lubrication. When lubricating oil is added to the connection between the inner ring and the shaft, it is difficult for the lubricating oil to enter the gap between the inner ring and the shaft, resulting in a limited contact area, a small lubrication range, and an unsatisfactory lubrication effect. Summary of the Invention

[0004] The purpose of this utility model is to solve the above-mentioned technical problems existing in the prior art and to provide a radial spherical bearing with a novel structure. Through the synergistic effect of lubricating oil and grease, the lubrication range of the inner ring wall is increased and the lubrication effect is improved.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A radial spherical plain bearing includes an inner ring and an outer ring, the inner ring being fitted inside the outer ring, with the outer spherical surface of the inner ring engaging and rotating with the inner spherical surface of the outer ring. The bearing is characterized by: a sealing ring within the annular gap between the inner and outer rings, forming a filling cavity between the sealing ring and both rings, the filling cavity containing grease; a first oil guide channel between the outer and inner walls of the inner ring, communicating with the filling cavity; an oil injection channel between the outer and inner walls of the outer ring; and a second oil guide channel between the outer and inner walls of the inner ring, corresponding to the oil injection channel. This spherical plain bearing has a novel structure, increasing the lubrication range of the inner ring's inner wall and improving lubrication efficiency through the synergistic effect of lubricating oil and grease.

[0006] Furthermore, the outer ring is fitted with a protective ring, which seals the inlet of the oil injection channel to prevent external dust from entering the oil injection channel and contaminating the lubricating oil. The protective ring includes a first ring body and a second ring body, which are detachably connected. The protective ring can be disassembled into two parts for easy assembly with the outer ring.

[0007] Furthermore, the first ring body has a first convex ring portion on its end face, and the second ring body has a second convex ring portion on its end face. The inner side of the first convex ring portion has an internal thread, and the outer side of the second convex ring portion has an external thread, so that the first ring body can be screwed into the second ring body, the screwing connection is reliable, and the two are not easy to separate freely.

[0008] Furthermore, the first ring has an iron block and a groove on its end face, with the iron block corresponding to the groove. A magnet is placed in the groove, and the magnet and iron block are magnetically attracted to each other. The second ring has the same structure as the first ring. The iron block of the first ring is inserted into the groove of the second ring and attracted to the magnet, and the iron block of the second ring is inserted into the groove of the first ring and attracted to the magnet, thus making the first and second rings magnetically attracted to each other, achieving a stable connection and making disassembly simple.

[0009] Furthermore, a buffer groove is provided on the sealing ring to provide deformation space when the sealing ring is compressed, preventing structural damage, thereby extending the service life of the sealing ring and facilitating the installation of the sealing ring.

[0010] Furthermore, the inner ring surface is provided with a wear-resistant layer, which improves the wear resistance of the inner ring and thus extends its service life.

[0011] This utility model, by adopting the above-mentioned technical solution, has the following beneficial effects: 1. The sealing ring seals the annular gap between the inner and outer rings, preventing external impurities from entering the gap and causing excessive wear on the outer spherical surface of the inner ring and the inner spherical surface of the outer ring, and also preventing grease from leaking out. The grease flows out through the first oil guide channel, lubricating the inner wall of the inner ring and achieving a self-lubricating effect. When lubricating oil is added to the oil injection channel, it flows out through the second oil guide channel, lubricating the inner wall of the inner ring, reducing the difficulty of adding lubricating oil. Through the synergistic effect of lubricating oil and grease, the lubrication range of the inner wall of the inner ring is increased, improving the lubrication effect.

[0012] 2. The protective ring seals the inlet of the oil injection channel, preventing external dust from entering the oil injection channel and contaminating the lubricating oil, and also preventing the lubricating oil from leaking out. The protective ring can be disassembled into two parts, which facilitates the assembly of the protective ring and the outer ring, and also makes it easy to replace the damaged part separately. The protective ring is installed in the bearing seat hole to bear the load for the outer ring, making the outer ring less prone to damage and thus protecting it. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention; Figure 2 This is a structural schematic diagram of Embodiment 2 of the present invention; Figure 3 This is a schematic diagram of the connection between the outer ring and the protective ring in Example 2; Figure 4 This is a schematic diagram of the structure of the second ring in Example 2; Figure 5 This is a schematic diagram of the structure of the first ring in Example 2; Figure 6 This is a structural schematic diagram of Embodiment 3 of the present invention; Figure 7 This is a schematic diagram of the structure of the first ring in Example 3.

[0014] In the diagram: 1-Inner ring; 2-Outer ring; 3-Sealing ring; 4-Filling cavity; 5-Grease; 6-Oil injection channel; 7-First oil guide channel; 8-Second oil guide channel; 9-Protective ring; 10-First ring body; 11-Second ring body; 12-First convex ring part; 13-Second convex ring part; 14-Buffer groove; 15-Iron block; 16-Groove; 17-Magnet block. Detailed Implementation

[0015] like Figure 1 The image shown is an embodiment of this utility model. A radial spherical bearing includes an inner ring 1 and an outer ring 2. The inner ring 1 is fitted inside the outer ring 2, and the outer spherical surface of the inner ring 1 rotates in conjunction with the inner spherical surface of the outer ring 2. The surface of the inner ring 1 is provided with a wear-resistant layer, which is a chrome-plated layer, thereby improving the wear resistance of the inner ring 1 and extending its service life.

[0016] A sealing ring 3 is embedded in the annular gap between the inner ring 1 and the outer ring 2. A filling cavity 4 is formed between the sealing ring 3, the inner ring 1, and the outer ring 2. The filling cavity 4 contains grease 5, which can lubricate the outer spherical surface of the inner ring 1 and the inner spherical surface of the outer ring 2. An oil injection channel 6 is provided between the outer wall and the inner wall of the outer ring 2. A first oil guide channel 7 and a second oil guide channel 8 are respectively provided between the outer wall and the inner wall of the inner ring 1. The first oil guide channel 7 communicates with the filling cavity 4, and the second oil guide channel 8 corresponds to the oil injection channel 6.

[0017] The sealing ring 3 seals the annular gap between the inner ring 1 and the outer ring 2, preventing external impurities from entering the gap and causing excessive wear on the outer spherical surface of the inner ring 1 and the inner spherical surface of the outer ring 2, and also preventing the grease 5 from leaking out. The grease 5 flows out through the first oil guide channel 7, lubricating the inner wall of the inner ring 1 and achieving a self-lubricating effect. When lubricating oil is added into the oil injection channel 6, the lubricating oil flows out through the second oil guide channel 8, lubricating the inner wall of the inner ring 1, reducing the difficulty of adding lubricating oil. Through the synergistic effect of the lubricating oil and the grease 5, the lubrication range of the inner wall of the inner ring 1 is increased, and the lubrication effect is improved.

[0018] The sealing ring 3 has a buffer groove 14, which provides a certain deformation space for the sealing ring 3 when it is compressed, prevents structural damage, extends the service life of the sealing ring 3, and facilitates the installation of the sealing ring 3.

[0019] like Figures 2 to 5 The image shown is a second embodiment of this utility model. Under the technical solution based on Embodiment 1, the outer ring 2 is provided with a protective ring 9. The protective ring 9 seals the inlet of the oil injection channel 6 to prevent external dust from entering the oil injection channel 6 and contaminating the lubricating oil, and also to prevent the lubricating oil from leaking out. The protective ring 9 is installed in the bearing seat hole to bear the load for the outer ring 2, making the outer ring 2 less prone to damage and playing a protective role for the outer ring 2.

[0020] The protective ring 9 includes a first ring body 10 and a second ring body 11. The end face of the first ring body 10 is provided with a first protruding ring portion 12, and the end face of the second ring body 11 is provided with a second protruding ring portion 13. The inner side of the first protruding ring portion 12 is provided with an internal thread, and the outer side of the second protruding ring portion 13 is provided with an external thread. The first protruding ring portion 12 and the second protruding ring portion 13 are screwed together, and the screw connection is reliable and the two are not easy to separate freely. The protective ring 9 can be disassembled into two parts, which facilitates the assembly of the protective ring 9 with the outer ring 2 and also makes it easy to replace the damaged part separately.

[0021] like Figure 6 and Figure 7 The image shown is Embodiment 3 of this utility model. Under the technical solution based on Embodiment 2, the structures of the first ring body 10 and the second ring body 11 are different. The end face of the first ring body 10 is provided with an iron block 15 and a groove 16, respectively. The iron block 15 corresponds to the groove 16. A magnet block 17 is provided in the groove 16. The magnet block 17 and the iron block 15 are attracted by magnetism. The structure of the second ring body 11 is the same as that of the first ring body 10.

[0022] The iron block 15 of the first ring 10 is embedded into the groove 16 of the second ring 11 and attracted to the magnet 17. The iron block 15 of the second ring 11 is embedded into the groove 16 of the first ring 10 and attracted to the magnet 17, so that the first ring 10 and the second ring 11 are attracted to each other, thus achieving a stable connection and easy disassembly.

[0023] The above are merely specific embodiments of this utility model, but the technical features of this utility model are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on this utility model to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of this utility model.

Claims

1. A radial spherical bearing, comprising: An inner ring and an outer ring, wherein the inner ring is fitted inside the outer ring, and the outer spherical surface of the inner ring and the inner spherical surface of the outer ring are engaged to rotate; Its features are: A sealing ring is provided in the annular gap between the inner ring and the outer ring, and a filling cavity is formed between the sealing ring, the inner ring, and the outer ring. The filling cavity is provided with grease, and a first oil guiding channel is provided between the outer wall and the inner wall of the inner ring. The first oil guiding channel communicates with the filling cavity. An oil injection channel is provided between the outer wall and the inner wall of the outer ring, and a second oil guide channel is provided between the outer wall and the inner wall of the inner ring, the second oil guide channel corresponding to the oil injection channel.

2. A radial spherical bearing according to claim 1, characterized in that: The outer ring is provided with a protective ring, which seals the inlet of the oil injection channel. The protective ring includes a first ring body and a second ring body, and the first ring body and the second ring body are detachably connected.

3. A radial spherical bearing according to claim 2, characterized in that: The first ring body has a first protruding ring portion on its end face, and the second ring body has a second protruding ring portion on its end face. The inner side of the first protruding ring portion has an internal thread, and the outer side of the second protruding ring portion has an external thread, so that the first ring body can be screwed onto the second ring body.

4. A radial spherical bearing according to claim 2, characterized in that: The first ring body has an iron block and a groove on its end face, the iron block and the groove are respectively, and a magnet is provided in the groove. The magnet and the iron block are magnetically attracted to each other. The second ring body has the same structure as the first ring body.

5. A radial spherical bearing according to claim 1, characterized in that: The sealing ring has a buffer groove.

6. A radial spherical bearing according to claim 1, characterized in that: The inner ring has a wear-resistant layer on its surface.

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