Novel radial spherical plain bearing

Abstract

The utility model relates to the technical field of knuckle bearings, and discloses a novel centripetal knuckle bearing which comprises an outer ring, an inner ring is arranged in the outer ring, the outer ring and the inner ring are mutually connected through interference fit, a spherical ring is arranged in the inner ring, and a plurality of groups of threaded holes are circumferentially formed in the left side wall and the right side wall of the outer ring. The installation ring and the extrusion ring are matched to form a detachable sealing structure, when the installation ring is abraded due to movement of the spherical ring, the damaged installation ring can be independently replaced only by disassembling the locking bolt, the maintenance cost is reduced, the annular oil storage cavity is formed in the joint portion of the installation ring and the inner ring through the two sets of arc-shaped angles, and the service life of the annular oil storage cavity is prolonged. And finally, the rotation of the mounting ring is stopped through the matching of the bulges and the grooves, so that the abrasion caused by the simultaneous rotation of the mounting ring and the spherical ring is further avoided, and the service life of the radial spherical plain bearing is effectively prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to joint bearing technical field, more specifically, the utility model relates to a novel centripetal joint bearing. BACKGROUND

[0002] As an important component in the mechanical field, the centripetal joint bearing is widely used in aerospace, automobile manufacturing, industrial machinery and many other industries, and bears the key role of connecting components, transmitting loads and allowing relative motion. The traditional centripetal joint bearing is usually composed of an inner ring, an outer ring and rolling elements, and its structural design meets the use requirements under normal working conditions to a certain extent.

[0003] In actual use, the current centripetal joint bearing usually has rolling element sliding and rotating. After rotating, the outer edge of the inner ring will scrape off the lubricating grease, so that there is lubricating grease between the inner ring and the rolling element. When the rolling element rotates back, the surface directly contacts the outer edge of the inner ring without lubricating grease, which may cause the inner ring to wear. The worn inner ring is easy to cause dust to contact the lubricating grease, which may affect the operation of the joint bearing. When repairing and replacing it, the entire inner ring needs to be removed and replaced with a new one, which is a complicated process and has a high replacement cost. SUMMARY

[0004] In order to overcome the shortcomings of the prior art, the utility model provides a novel centripetal joint bearing, which has the advantages of convenient disassembly and low maintenance cost.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a novel centripetal joint bearing, comprising an outer ring, an inner ring arranged inside the outer ring, the outer ring and the inner ring being connected to each other through interference fit, a spherical ring arranged inside the inner ring, and a plurality of threaded holes arranged circumferentially on the left and right side walls of the outer ring.

[0006] The left and right sides of the inner ring are provided with mounting rings, the inner walls of the mounting rings are in close contact with the spherical ring, one side of each of the two mounting rings is fixedly provided with a limiting ring, and the opposite side of each of the two mounting rings is provided with an extrusion ring.

[0007] As a preferred technical scheme of the utility model, the left and right ends of the inner wall of the inner ring are symmetrically provided with first arc-shaped corners, the opposite end of each of the two mounting rings is provided with a second arc-shaped corner corresponding to the first arc-shaped corner, and the second arc-shaped corner and the first arc-shaped corner form a storage groove.

[0008] As a preferred technical scheme of the utility model, the outer side of the outer ring is provided with a mounting groove, and the mounting groove is used for mounting and fixing the outer ring.

[0009] As a preferred technical scheme of the utility model, the outer wall of the mounting ring is provided with a protrusion, and the inner wall of the extrusion ring is provided with a groove corresponding to the protrusion.

[0010] As a preferred technical scheme of the utility model, the protrusion and the groove can cooperate with each other, thereby preventing the rotation of the mounting ring.

[0011] As a preferred technical scheme of the utility model, the protrusion is semicircular, which is used for avoiding excessive shearing force.

[0012] Compared with the prior art, the utility model has the beneficial effects as follows:

[0013] The utility model cooperates the mounting ring with the extrusion ring to form a detachable sealing structure, when the mounting ring is abraded due to the movement of the spherical ring, only needs to dismount the locking bolt to replace the damaged mounting ring alone, effectively saves the maintenance time, reduces the maintenance cost, and does not need special hydraulic dismounting equipment, significantly improves the on-site maintenance efficiency, forms an annular oil storage cavity through the cooperation of the two arc-shaped angles at the joint part of the mounting ring and the inner ring, can guarantee the lubricating effect between the spherical ring and the inner ring, finally cooperates the protrusion with the groove to prevent the rotation of the mounting ring, thereby further avoiding the abrasion caused by the rotation of the mounting ring and the spherical ring together, and effectively improves the service life of the radial spherical bearing. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 A structural schematic view of a novel radial spherical bearing is provided for the utility model;

[0015] Fig. 2 A sectional view schematic view of a novel radial spherical bearing is provided for the utility model;

[0016] Fig. 3 An expanded structure schematic view of a novel radial spherical bearing is provided for the utility model.

[0017] In the drawing: 1, outer ring; 101, threaded hole; 102, mounting groove; 2, inner ring; 201, first arc-shaped angle; 3, spherical ring; 4, mounting ring; 401, limiting ring; 402, protrusion; 403, second arc-shaped angle; 5, extrusion ring; 501, locking bolt; 502, groove. DETAILED DESCRIPTION

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] like Figs. 1 to 3 As shown, this utility model provides a novel radial spherical bearing, including an outer ring 1, an inner ring 2 disposed inside the outer ring 1, the outer ring 1 and the inner ring 2 being connected to each other by an interference fit, a spherical ring 3 disposed inside the inner ring 2, and multiple sets of threaded holes 101 circumferentially disposed on the left and right side walls of the outer ring 1.

[0020] Mounting rings 4 are provided on both the left and right sides of the inner ring 2. The inner wall of the mounting ring 4 fits against the spherical ring 3. A limit ring 401 is fixedly installed on one side of each of the two sets of mounting rings 4. A compression ring 5 is provided on the opposite side of each of the two sets of mounting rings 4. The compression ring 5 and the mounting ring 4 are interlocked by the limit ring 401. The compression ring 5 and the outer ring 1 are locked and fixed by the locking bolt 501 and the threaded hole 101.

[0021] When assembling the radial spherical bearing, the workers first use an external hydraulic mechanism to press the spherical ring 3 into the inner ring 2 to form the spherical bearing structure. Then, the inner ring 2 is installed inside the outer ring 1 with an interference fit, so that the outer ring 1 protects the inner ring 2. During installation, it is necessary to ensure that the fracture point on the lower side of the inner ring 2 is at a 90-degree angle to the stress point of the shaft. Then, the workers put two mounting rings 4 on both sides of the spherical ring 3 respectively, and make the mounting rings 4 fit against the inner ring 2. Finally, the two sets of compression rings 5 ​​and mounting rings 4 are fitted together in sequence. At this time, the mounting rings 4 can be locked with the compression rings 5 ​​by the limiting rings 401. Next, the locking bolt 501 is driven into the threaded hole 101 to install the compression ring 5. When the compression ring 5 and the mounting ring 4 are fitted together, the protrusion 402 and the groove 502 are engaged with each other, thereby preventing the mounting ring 4 from rotating. During the use of this device, the mounting ring 4 is easily worn due to the continuous rotation and sliding of the ball ring 3. When the mounting ring 4 is worn, dust can easily enter between the ball ring 3 and the inner ring 2. At this time, only the corresponding mounting ring 4 needs to be replaced, without replacing the entire inner ring 2. The maintenance is convenient and the maintenance cost is lower, which effectively improves the maintenance efficiency of radial spherical plain bearings.

[0022] The detachable sealing structure is formed by cooperation of the mounting ring and the extrusion ring, when the mounting ring is abraded due to movement of the spherical ring, only the damaged mounting ring needs to be replaced by detaching the locking bolt, so that maintenance time is effectively saved, maintenance cost is reduced, special hydraulic dismounting equipment is not needed, on-site maintenance efficiency is remarkably improved, the annular oil storage cavity is formed at the joint between the mounting ring and the inner ring through the two groups of arc-shaped corners, so that the lubricating effect between the spherical ring and the inner ring is guaranteed, finally, the rotation of the mounting ring 4 is prevented through cooperation of the protrusion 402 and the groove 502, so that abrasion caused by rotation of the mounting ring 4 and the spherical ring 3 together is further avoided, and the service life of the radial spherical bearing is effectively improved.

[0023] The left and right ends of the inner wall of the inner ring 2 are symmetrically provided with first arc-shaped corners 201, and the opposite ends of the two groups of mounting rings 4 are provided with second arc-shaped corners 403 corresponding to the first arc-shaped corners 201, and the second arc-shaped corners 403 and the first arc-shaped corners 201 form storage grooves.

[0024] The staff can smear a certain amount of lubricating grease on the spherical ring 3 between the two groups of mounting rings 4 during installation, and further, after the bearing is installed, the lubricating grease is stored in the storage groove, so that the lubricating effect between the spherical ring 3 and the inner ring 2 can be guaranteed, and separate holes are avoided on the inner ring 2 and the outer ring 1 for adding lubricating grease.

[0025] The outer side of the outer ring 1 is provided with a mounting groove 102, and the mounting groove 102 is used for mounting and fixing the outer ring 1.

[0026] The outer wall of the mounting ring 4 is circumferentially provided with a protrusion 402, and the inner wall of the extrusion ring 5 is provided with a groove 502 corresponding to the protrusion 402.

[0027] The protrusion 402 and the groove 502 can cooperate with each other to prevent rotation of the mounting ring 4.

[0028] The rotation of the mounting ring 4 is prevented through cooperation of the protrusion 402 and the groove 502, and further, abrasion caused by rotation of the mounting ring 4 and the spherical ring 3 together is avoided.

[0029] The protrusion 402 is semicircular, which is used for avoiding that the shear force received is too large.

[0030] The semicircular protrusion 402 can bear force uniformly and avoid that the shear force received is too large.

[0031] The working principle and use process of the utility model are as follows:

[0032] When the staff assembles the radial spherical plain bearing, the spherical ring 3 is pressed into the inside of the inner ring 2 through an external hydraulic mechanism to form a spherical plain bearing structure, then the inner ring 2 is installed in the inside of the outer ring 1 through interference fit to protect the inner ring 2 by the outer ring 1, and the staff needs to ensure that the fracture on the lower side of the inner ring 2 is at 90 degrees with the stress point of the rotating shaft during installation, then the staff puts two installation rings 4 on both sides of the spherical ring 3 respectively, and makes the installation ring 4 adhere to the inner ring 2, finally the staff adheres two groups of extrusion rings 5 and installation rings 4 to each other in sequence, at this time the installation ring 4 can be clamped with the extrusion ring 5 through the limiting ring 401, then the locking bolt 501 is screwed into the threaded hole 101 to realize the installation of the extrusion ring 5, when the extrusion ring 5 and the installation ring 4 adhere to each other, the protrusion 402 and the groove 502 are clamped with each other to avoid the rotation of the installation ring 4, during the use of the device, because the spherical ring 3 continuously rotates and slides, the installation ring 4 is easy to wear, when the installation ring 4 is worn, dust is easy to enter between the spherical ring 3 and the inner ring 2, at this time, only the corresponding installation ring 4 needs to be replaced, the whole inner ring 2 does not need to be replaced, the maintenance is convenient, the maintenance cost is lower, and the maintenance efficiency of the radial spherical plain bearing is effectively improved.

[0033] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0034] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A new type of radial spherical plain bearing, comprising an outer ring (1), characterized in that: The inner part of the outer ring (1) is provided with an inner ring (2), the outer ring (1) and the inner ring (2) are connected with each other through interference fit, the inner part of the inner ring (2) is provided with a spherical ring (3), and the left and right side walls of the outer ring (1) are both circumferentially provided with a plurality of threaded holes (101); Both left and right sides of the inner ring (2) are provided with mounting rings (4), the inner wall of the mounting ring (4) is attached to the spherical ring (3), one side of the two mounting rings (4) is fixedly provided with a limiting ring (401), and the opposite side of the two mounting rings (4) is provided with an extrusion ring (5), the extrusion ring (5) and the mounting ring (4) are clamped to each other through the limiting ring (401), and the extrusion ring (5) and the outer ring (1) are locked and fixed through the locking bolt (501) and the threaded hole (101).

2. A novel condylar bearing according to claim 1, characterized in that: The left and right ends of the inner wall of the inner ring (2) are symmetrically provided with first arc corners (201), and the opposite ends of the two mounting rings (4) are both provided with second arc corners (403) corresponding to the first arc corners (201), and the second arc corners (403) and the first arc corners (201) form storage grooves.

3. A novel condylar bearing according to claim 1, characterized in that: The outer side of the outer ring (1) is provided with a mounting groove (102), and the mounting groove (102) is used for mounting and fixing the outer ring (1).

4. A novel condylar bearing according to claim 1, characterized in that: The outer wall of the mounting ring (4) is circumferentially provided with a protrusion (402), and the inner wall of the extrusion ring (5) is provided with a groove (502) corresponding to the protrusion (402).

5. A novel condylar bearing according to claim 4, characterized in that: The protrusion (402) and the groove (502) can cooperate with each other, so as to prevent the rotation of the mounting ring (4).

6. A novel condylar bearing according to claim 4, characterized in that: The protrusion (402) is semicircular, so that the shear force received thereby is avoided to be too large.

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