Shock-resistant composite sealing type rod end knuckle bearing

Abstract

The utility model belongs to the technical field of rod end knuckle bearings, and discloses an anti-impact composite sealing type rod end knuckle bearing which comprises a bearing outer ring, a bearing inner ring is connected to the inner side of the bearing outer ring in a rolling mode, an oil box is installed on the bearing outer ring, and steel balls are connected to the position, close to the bearing inner ring, of the oil box in a rolling mode. The steel balls are attached to the outer wall of the bearing inner ring, an attaching assembly is connected between the oil box and the bearing outer ring and comprises a supporting plate arranged above the oil box, a guide rod penetrates through the supporting plate, the portion, between the supporting plate and the oil box, of the guide rod is sleeved with a spring, the top end of the guide rod is connected with a blocking plate, and the blocking plate is connected with the oil box. The supporting plate is fixed, the supporting plate and the oil box are connected through the spring, the spring exerts force to enable the steel balls on the oil box to be continuously attached to the outer wall of the bearing inner ring, it is guaranteed that the steel balls can be driven to roll when the bearing inner ring moves, lubricating oil in the oil box is brought out, and therefore the bearing is lubricated.

Description

Technical Field

[0001] This utility model belongs to the technical field of rod end spherical bearings, specifically an impact-resistant composite sealed rod end spherical bearing. Background Technology

[0002] Impact-resistant composite sealed rod end spherical plain bearings are a special type of rod end spherical plain bearing, mainly used in mechanical transmission parts that need to withstand impact loads and have high sealing performance requirements. Utilizing the spherical contact between the ball and the inner and outer rings, the bearing is allowed to swing and tilt within a certain angle range to adapt to loads in different directions and shaft misalignment. When subjected to impact loads, the fit between the bearing's ball and the inner and outer rings, as well as the material properties, can absorb and disperse the impact force. They are widely used in industries such as engineering hydraulic cylinders, forging presses, construction machinery, automation equipment, automotive shock absorbers, and hydraulic machinery.

[0003] Chinese Patent Application No. 202420853897.1 discloses a user-friendly rod end joint bearing, comprising a rod body and a ball bearing. The ball bearing is rolledly connected to the inner wall of the rod body, and a lubrication groove is formed in the inner wall of the rod body. The inner wall of the rod body is provided with a lubrication mechanism for improving the flexibility of the ball bearing. The lubrication mechanism includes an oil box, which is fixedly installed on the inner wall of the rod body. An acrylic plate is fixedly installed on the top of the oil box, and an oil injection pipe is fixedly installed on the top of the acrylic plate. A pipe cap is threaded to the outer wall of the oil injection pipe. By setting up an oil box in conjunction with a steel ball, it is convenient for workers to lubricate the ball bearing and to evenly apply lubricating oil to the surface of the ball bearing, thereby improving the lubrication effect of the ball bearing, avoiding wear between the ball bearing and the rod body, and thus increasing the service life of the ball bearing.

[0004] However, the above-mentioned rod end spherical plain bearing has the following shortcomings in actual use: According to the above structure, the oil box is a detachable structure. After each disassembly and assembly of the oil box, how to ensure the fit between the steel ball and the inner ring of the bearing is an important issue. If the steel ball cannot fit the inner ring of the bearing, it will be difficult to rotate and carry out the lubricating oil in the oil box.

[0005] Therefore, an impact-resistant composite sealed rod end spherical bearing is proposed to address the above problems. Utility Model Content

[0006] To address the problems mentioned in the background art, this utility model provides an impact-resistant composite sealed rod end spherical bearing, which has the advantage of ensuring that the steel balls can fit against the outer wall of the inner ring of the bearing, so as to carry out the lubricating oil in the oil box and thus lubricate the bearing.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an impact-resistant composite sealed rod end spherical bearing, comprising an outer bearing ring, an inner bearing ring being rolledly connected to the inner side of the outer bearing ring, an oil box being installed on the outer bearing ring, and steel balls being rolledly connected to the oil box near the inner bearing ring, the steel balls being in contact with the outer wall of the inner bearing ring, and a contacting component being connected between the oil box and the outer bearing ring.

[0008] The bonding assembly includes a support plate disposed above the oil box, a guide rod passing through the support plate, a spring sleeved on the guide rod between the support plate and the oil box, a stop plate connected to the top of the guide rod, and fixing bolts disposed at both ends of the support plate, the fixing bolts being threadedly connected to the outer ring of the bearing.

[0009] Preferably, the outer ring of the bearing is fixedly connected to a connecting rod, and the end of the connecting rod is provided with a connecting end.

[0010] Preferably, a lip seal is provided on the inner wall of the bearing outer ring near the edge, and the outer wall of the bearing inner ring slides against the lip seal.

[0011] Preferably, a positioning groove is provided on the outer ring of the bearing at a position corresponding to the oil box, and the oil box is disposed in the positioning groove.

[0012] Preferably, the inner wall of the outer ring of the bearing is provided with a main oil guide groove, and the main oil guide groove is connected to a uniformly distributed oil guide branch groove.

[0013] Preferably, a limiting hole is provided on the oil box at a position corresponding to the steel ball, the steel ball is disposed in the limiting hole, and an oil drain groove is formed on the inner wall of the limiting hole.

[0014] Preferably, the support plate has a guide hole that matches the guide rod, and a threaded connecting pipe is fixed on the outer ring of the bearing at a position corresponding to the fixing bolt, and the threaded connecting pipe is threadedly connected to the fixing bolt.

[0015] Preferably, the top of the oil box is connected to an oil injection pipe, and the top end of the oil injection pipe is threaded through the support plate and connected to a sealing head.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] 1. This utility model fixes the support plate by setting a fitting component, and the support plate is connected to the oil box by a spring. The spring applies force to make the steel ball on the oil box continuously fit against the outer wall of the inner ring of the bearing, so as to ensure that the steel ball can roll when the inner ring of the bearing moves, so as to carry out the lubricating oil in the oil box, thereby lubricating the bearing.

[0018] 2. This utility model uses structures such as the main oil guide groove, the supporting oil guide groove, and the drain groove to drive more lubricating oil by the vibration of the bearing during operation and the rolling of the steel balls. The main oil guide groove and the supporting oil guide groove deliver the lubricating oil to various parts of the inner ring and outer wall of the bearing to ensure the lubrication effect.

[0019] 3. This utility model ensures the sealing between the outer ring and the inner ring of the bearing by setting a lip seal, preventing external dust from entering and internal lubricating oil from leaking out, which is beneficial to the use of rod end spherical bearings. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the bearing outer ring of this utility model;

[0022] Figure 3 This is a cross-sectional view of the outer ring of the bearing of this utility model;

[0023] Figure 4 This is a schematic diagram of the bonding component of this utility model;

[0024] Figure 5 This is a cross-sectional structural diagram of the oil box of this utility model.

[0025] In the diagram: 1. Bearing outer ring; 2. Bearing inner ring; 3. Oil box; 4. Steel ball;

[0026] 5. Adhesion assembly; 51. Support plate; 52. Guide rod; 53. Spring; 54. Resistance plate; 55. Fixing bolt;

[0027] 6. Connecting rod; 7. Connecting end; 8. Lip seal; 9. Positioning groove; 10. Main oil guide groove; 11. Support oil guide groove; 12. Limiting hole; 13. Oil drain groove; 14. Guide hole; 15. Threaded connecting pipe; 16. Oil injection pipe; 17. Sealing head. Detailed Implementation

[0028] 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.

[0029] like Figures 1 to 5As shown, this utility model provides an impact-resistant composite sealed rod end spherical bearing, including a bearing outer ring 1, a bearing inner ring 2 that is rolledly connected to the inner side of the bearing outer ring 1, an oil box 3 installed on the bearing outer ring 1, a steel ball 4 that is rolledly connected to the oil box 3 near the bearing inner ring 2, the steel ball 4 that fits against the outer wall of the bearing inner ring 2, and a fitting component 5 that connects the oil box 3 and the bearing outer ring 1.

[0030] The fitting assembly 5 includes a support plate 51 located above the oil box 3. A guide rod 52 passes through the support plate 51. A spring 53 is fitted on the guide rod 52 between the support plate 51 and the oil box 3. A baffle plate 54 is connected to the top of the guide rod 52. Fixing bolts 55 are provided at both ends of the support plate 51. The fixing bolts 55 are threaded to the outer ring 1 of the bearing to fix the support plate 51. The support plate 51 and the oil box 3 are connected by the spring 53. The spring 53 applies force to make the steel ball 4 on the oil box 3 continuously adhere to the outer wall of the inner ring 2 of the bearing, so that when the inner ring 2 of the bearing moves, it can drive the steel ball 4 to roll, so as to carry out the lubricating oil in the oil box 3, thereby lubricating the bearing.

[0031] Specifically, the outer ring 1 of the bearing is fixedly connected to a connecting rod 6, and the end of the connecting rod 6 is provided with a connecting end 7.

[0032] Furthermore, a lip seal 8 is provided on the inner wall of the outer ring 1 near the edge, and the outer wall of the inner ring 2 slides against the lip seal 8 to ensure the sealing between the outer ring 1 and the inner ring 2, preventing external dust from entering and internal lubricating oil from leaking out, which is beneficial to the use of the rod end spherical bearing.

[0033] Furthermore, a positioning groove 9 is provided on the outer ring 1 of the bearing at a position corresponding to the oil box 3, and the oil box 3 is located in the positioning groove 9.

[0034] It is worth noting that the inner wall of the outer ring 1 of the bearing is provided with an oil guiding main groove 10, and the oil guiding main groove 10 is connected to an evenly distributed oil guiding support groove 11.

[0035] It is worth noting that a limiting hole 12 is provided on the oil box 3 at the position corresponding to the steel ball 4. The steel ball 4 is placed in the limiting hole 12. An oil drain groove 13 is opened on the inner wall of the limiting hole 12. The vibration of the bearing during operation and the rolling of the steel ball drive more lubricating oil. The lubricating oil is transported to various parts of the outer wall of the inner ring 2 of the bearing by the main oil guide groove 10 and the oil guide support groove 11 to ensure the lubrication effect.

[0036] It is worth mentioning that the support plate 51 has a guide hole 14 that matches the guide rod 52, and a threaded connecting pipe 15 is fixed on the outer ring 1 of the bearing at the position corresponding to the fixing bolt 55. The threaded connecting pipe 15 is threadedly connected to the fixing bolt 55.

[0037] It is worth emphasizing that the top of the oil box 3 is connected to an oil injection pipe 16, and the top of the oil injection pipe 16 passes through the support plate 51 and is threaded to a plug head 17 for adding lubricating oil.

[0038] Working principle and process: The support plate 51 is fixed, and the support plate 51 is connected to the oil box 3 by a spring 53. The spring 53 applies force to keep the steel ball 4 on the oil box 3 in continuous contact with the outer wall of the inner ring 2 of the bearing, so that the steel ball 4 can be driven to roll when the inner ring 2 of the bearing moves, so as to carry out the lubricating oil in the oil box 3, thereby lubricating the bearing. The oil drain groove 13 uses the vibration of the bearing during operation and the rolling of the steel ball 4 to drive more lubricating oil, and relies on the main oil guide groove 10 and the oil guide support groove 11 to deliver the lubricating oil to various parts of the outer wall of the inner ring 2 of the bearing to ensure the lubrication effect. The lip seal 8 ensures the sealing between the outer ring 1 of the bearing and the inner ring 2 of the bearing, preventing external dust from entering and preventing internal lubricating oil from leaking out, which is beneficial to the use of the rod end joint bearing.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An impact-resistant composite sealed rod end spherical plain bearing, comprising a bearing outer ring (1), characterized in that: The bearing outer ring (1) is rolledly connected to the bearing inner ring (2), and an oil box (3) is installed on the bearing outer ring (1). A steel ball (4) is rolledly connected to the oil box (3) near the bearing inner ring (2). The steel ball (4) fits against the outer wall of the bearing inner ring (2). A fitting component (5) is connected between the oil box (3) and the bearing outer ring (1). The bonding assembly (5) includes a support plate (51) located above the oil box (3), a guide rod (52) passing through the support plate (51), a spring (53) sleeved on the guide rod (52) between the support plate (51) and the oil box (3), a stop plate (54) connected to the top of the guide rod (52), and fixing bolts (55) provided at both ends of the support plate (51), the fixing bolts (55) being threadedly connected to the outer ring (1) of the bearing.

2. The impact-resistant composite sealed rod end spherical bearing according to claim 1, characterized in that: The outer ring (1) of the bearing is fixedly connected to a connecting rod (6), and the end of the connecting rod (6) is provided with a connecting end (7).

3. The impact-resistant composite sealed rod end spherical bearing according to claim 1, characterized in that: A lip seal (8) is provided on the inner wall of the outer ring (1) of the bearing near the edge, and the outer wall of the inner ring (2) of the bearing slides against the lip seal (8).

4. The impact-resistant composite sealed rod end spherical bearing according to claim 1, characterized in that: A positioning groove (9) is provided on the outer ring (1) of the bearing, corresponding to the position of the oil box (3), and the oil box (3) is located in the positioning groove (9).

5. The impact-resistant composite sealed rod end spherical bearing according to claim 1, characterized in that: The inner wall of the outer ring (1) of the bearing is provided with an oil guide main groove (10), and the oil guide main groove (10) is connected to a uniformly distributed oil guide branch groove (11).

6. The impact-resistant composite sealed rod end spherical bearing according to claim 1, characterized in that: A limiting hole (12) is provided on the oil box (3) at the position corresponding to the steel ball (4). The steel ball (4) is located in the limiting hole (12). An oil drain groove (13) is provided on the inner wall of the limiting hole (12).

7. The impact-resistant composite sealed rod end spherical bearing according to claim 1, characterized in that: The support plate (51) has a guide hole (14) that matches the guide rod (52). The bearing outer ring (1) is fixed with a threaded connecting pipe (15) at the position corresponding to the fixing bolt (55). The threaded connecting pipe (15) is threadedly connected to the fixing bolt (55).

8. The impact-resistant composite sealed rod end spherical bearing according to claim 1, characterized in that: The top of the oil box (3) is connected to an oil injection pipe (16), and the top of the oil injection pipe (16) is threaded through the support plate (51) and connected to a plug (17).

Images