Rod end knuckle bearing with good lubricating effect

Abstract

The utility model belongs to the technical field of rod end knuckle bearings, and particularly relates to a rod end knuckle bearing with a good lubricating effect, which comprises a bearing main body, a first cylinder fixedly connected to the left side of the bearing main body, and a second cylinder fixedly connected to the left side of the bearing main body. The left side of the first cylinder and the left side of the second cylinder are fixedly connected with sealing rings, and the right sides of the sealing rings are fixedly connected with sealing columns. According to the rod end knuckle bearing with the good lubricating effect, 12 oil injection holes are formed in the bearing outer ring, a first cylinder, a second cylinder, a sealing ring, a sealing column, an elastic rubber sheet, a first circular ring, a circular hole and a second circular ring are matched, when a user injects oil, the 12 oil injection holes can be opened at the same time, the flow of the oil injection holes is the same, and the lubricating effect is good. And therefore, the lubricating oil in the bearing outer ring is uniformly distributed, and the lubricating effect of the rod end knuckle bearing is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of rod end spherical bearings, specifically relating to a rod end spherical bearing with good lubrication effect. Background Technology

[0002] Rod end spherical plain bearings are spherical plain bearings with or mounted on rod ends, belonging to a subcategory of spherical plain bearings. Currently, commercially available wear-resistant rod end spherical plain bearings mainly consist of an outer ring, rollers, an inner ring, a cage, a rod, and an oil injection hole. Lubricating oil is injected into the outer ring through the oil injection hole, damaging the rollers and reducing their wear rate. For example, a wear-resistant detachable rod end spherical plain bearing is disclosed in Chinese Patent Publication No. CN215293223U. However, when injecting oil into the outer ring through the single oil injection hole, the lubricating oil distribution within the outer ring is uneven, resulting in poor lubrication. Furthermore, impurities in the injected lubricating oil often further reduce lubrication effectiveness. Utility Model Content

[0003] The purpose of this invention is to provide a rod end spherical plain bearing with good lubrication effect. It solves the problem that when oil is injected into the outer ring of the bearing through an oil injection hole, the lubricating oil is not evenly distributed in the outer ring of the bearing due to the fact that there is only one oil injection hole, resulting in poor lubrication effect. At the same time, it also solves the problem that the lubrication effect is often reduced due to impurities in the injected lubricating oil.

[0004] The specific technical solution adopted by this utility model is as follows:

[0005] A rod end joint bearing with good lubrication includes a bearing body. A first cylinder is fixedly connected to the left side of the bearing body, and a second cylinder is fixedly connected to the left side of the bearing body. Sealing rings are fixedly connected to the left sides of both the first and second cylinders. A sealing post is fixedly connected to the right side of the sealing rings. An elastic rubber sheet is attached to the surface of the sealing post. A first ring is adhered to the right side of the elastic rubber sheet. The surface of the first ring is fixedly connected to the inner wall of the first cylinder, and the inner wall of the first ring is fixedly connected to the surface of the second cylinder. A circular hole is formed inside the first ring. A second ring is fixedly connected to the right side of the first ring and the left side of the bearing body. An oil injection pipe is fixedly connected to the bottom of the first cylinder.

[0006] The present invention is further configured such that the bearing body includes an outer bearing ring, a cage, an inner bearing ring, cylindrical rollers, a bearing rod, and 12 oil injection holes. The right side of the first cylinder, the right side of the second cylinder, and the right side of the second ring are all fixedly connected to the left side of the outer bearing ring. The inner wall of the outer bearing ring is in contact with the surface of the cage, and the inner wall of the cage is in contact with the surface of the inner bearing ring. The surfaces of the inner bearing ring, the cage, and the outer bearing ring are all in contact with the surfaces of the cylindrical rollers. The upper surface of the bearing rod is fixedly connected to the bottom of the outer bearing ring. The 12 oil injection holes are located inside the outer bearing ring.

[0007] The present invention is further configured such that the center of the elastic rubber sheet, the center of the circular hole, and the center of the second circular ring are all coincident with the axis of the sealing column, and the sealing column is located to the left of the oil injection hole.

[0008] The present invention is further configured such that the bottom end of the oil injection pipe is fixedly connected to an internally threaded cylinder, the right side of the internally threaded cylinder is fixedly connected to the left side of the outer ring of the bearing, and a filter is threadedly connected to the inner wall of the internally threaded cylinder.

[0009] The present invention is further configured such that the filter includes an externally threaded cylinder, a sealing plug, a rotating block, a filter cylinder, and a sealing plate; the inner wall of the internally threaded cylinder is threadedly connected to the surface of the externally threaded cylinder; the inner wall of the externally threaded cylinder is in contact with the surface of the sealing plug; the surface of the externally threaded cylinder is fixedly connected to the inner wall of the rotating block; the inner wall of the externally threaded cylinder is fixedly connected to the surface of the filter cylinder; the right side of the filter cylinder is fixedly connected to the left side of the sealing plate; and the right side of the sealing plate is in contact with the left side of the outer ring of the bearing.

[0010] The present invention is further configured such that the frictional force between the sealing plug and the external threaded cylinder is greater than the weight of the sealing plug.

[0011] The technical effects achieved by this utility model are as follows:

[0012] This utility model discloses a rod end spherical plain bearing with good lubrication effect. It has 12 oil injection holes in the outer ring of the bearing. Through the cooperation of a first cylinder, a second cylinder, a sealing ring, a sealing column, an elastic rubber sheet, a first ring, a round hole and a second ring, all 12 oil injection holes can be opened simultaneously when the user injects oil, and the flow rate of each oil injection hole is the same. This makes the lubricating oil in the outer ring of the bearing evenly distributed, thereby improving the lubrication effect of the rod end spherical plain bearing.

[0013] This utility model provides a rod end joint bearing with good lubrication effect. The filter inner cylinder can filter the lubricating oil entering the first cylinder, thereby preventing the lubrication effect from being reduced due to impurities in the lubricating oil when it is injected into the outer ring of the bearing. At the same time, through the cooperation of the inner and outer threaded cylinders, the user can easily disassemble and assemble the filter by rotating the rotating block on the filter, making it more convenient for the user to clean or replace the filter. Attached Figure Description

[0014] Figure 1 This is a three-dimensional schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a left view of the structure of this utility model;

[0016] Figure 3 yes Figure 2 Sectional view at point AA;

[0017] Figure 4 yes Figure 3 Enlarged view at point B in the middle;

[0018] Figure 5 This is a left view of the outer ring of the bearing in this utility model;

[0019] Figure 6 This is a left view of the first ring in this utility model;

[0020] Figure 7 This is a right view of the first ring in this utility model;

[0021] Figure 8 This is a front view of the filter in this utility model;

[0022] Figure 9 yes Figure 8 Sectional view at point CC.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 1. Bearing body; 101. Bearing outer ring; 102. Cage; 103. Bearing inner ring; 104. Cylindrical roller; 105. Bearing rod; 106. Oil injection hole; 2. First cylinder; 3. Second cylinder; 4. Sealing ring; 5. Sealing post; 6. Elastic rubber sheet; 7. First ring; 8. Circular hole; 9. Second ring; 10. Oil injection pipe; 11. Internal threaded cylinder; 12. Filter; 1201. External threaded cylinder; 1202. Sealing plug; 1203. Rotary block; 1204. Filter cylinder; 1205. Sealing plate. Detailed Implementation

[0025] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0026] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0027] like Figures 1 to 7 As shown, a rod end joint bearing with good lubrication effect includes a bearing body 1. A first cylinder 2 is fixedly connected to the left side of the bearing body 1, and a second cylinder 3 is fixedly connected to the left side of the bearing body 1. Sealing rings 4 are fixedly connected to the left side of both the first cylinder 2 and the left side of both the second cylinder 3. A sealing post 5 is fixedly connected to the right side of the sealing ring 4. An elastic rubber sheet 6 is attached to the surface of the sealing post 5. A first ring 7 is bonded to the right side of the elastic rubber sheet 6. The surface of the first ring 7 is fixedly connected to the inner wall of the first cylinder 2, and the inner wall of the first ring 7 is fixedly connected to the surface of the second cylinder 3. A circular hole 8 is opened inside the first ring 7. A second ring 9 is fixedly connected to the right side of the first ring 7 and the left side of the bearing body 1. The center of the elastic rubber sheet 6, the center of the circular hole 8, and the center of the second ring 9 are all coincident with the axis of the sealing post 5. An oil injection pipe 10 is fixedly connected to the bottom of the first cylinder 2.

[0028] The bearing body 1 includes an outer ring 101, a cage 102, an inner ring 103, cylindrical rollers 104, a bearing rod 105, and 12 oil injection holes 106. The right side of the first cylinder 2, the right side of the second cylinder 3, and the right side of the second ring 9 are all fixedly connected to the left side of the outer ring 101. The inner wall of the outer ring 101 is in contact with the surface of the cage 102. The inner wall of the cage 102 is in contact with the surface of the inner ring 103. The surfaces of the inner ring 103, the cage 102, and the outer ring 101 are all in contact with the surfaces of the cylindrical rollers 104. The upper surface of the bearing rod 105 is fixedly connected to the bottom of the outer ring 101. The 12 oil injection holes 106 are opened inside the outer ring 101, and the sealing post 5 is located to the left of the oil injection holes 106.

[0029] It should be noted that the sealing ring 4 seals the gap between the first cylinder 2 and the second cylinder 3. When lubricating oil enters the first cylinder 2 through the oil injection pipe 10, the lubricating oil in the first cylinder 2 will exert a rightward pressure on the elastic rubber sheet 6. When the pressure exerted by the lubricating oil on the elastic rubber sheet 6 is less than the elastic force of the elastic rubber sheet 6, the elastic rubber sheet 6 will not deform. Furthermore, since the inner wall of the elastic rubber sheet 6 is in close contact with the sealing column 5, the oil injection hole 106 is kept closed through the elastic rubber sheet 6 and the sealing column 5. When the pressure exerted by the lubricating oil on the elastic rubber sheet 6 is greater than the elastic force of the elastic rubber sheet 6, the oil injection hole 106 will remain closed. When the elasticity of 6 is applied, the elastic rubber sheet 6 will deform, creating a gap between the inner wall of the elastic rubber sheet 6 and the sealing column 5. At this time, lubricating oil can enter the oil injection hole 106 through the gap between the elastic rubber sheet 6 and the sealing column 5. Simultaneously, during the oil injection process, since the pressure of the lubricating oil in the first cylinder 2 on each elastic rubber sheet 6 is equal, all 12 oil injection holes 106 can be opened simultaneously, and the flow rate of each oil injection hole 106 is the same. Furthermore, when the gap between the first cylinder 2 and the second cylinder 3 is filled with lubricating oil, the pressure of the lubricating oil on the elastic rubber sheet 6 is less than the elasticity of the elastic rubber sheet 6.

[0030] like Figures 1 to 9 As shown, the bottom end of the oil injection pipe 10 is fixedly connected to an internally threaded cylinder 11. The right side of the internally threaded cylinder 11 is fixedly connected to the left side of the bearing outer ring 101. A filter 12 is threadedly connected to the inner wall of the internally threaded cylinder 11.

[0031] The filter 12 includes an external threaded cylinder 1201, a sealing plug 1202, a rotating block 1203, a filter cylinder 1204, and a sealing plate 1205. The inner wall of the internal threaded cylinder 11 is threadedly connected to the surface of the external threaded cylinder 1201. The inner wall of the external threaded cylinder 1201 is in contact with the surface of the sealing plug 1202. The friction between the sealing plug 1202 and the external threaded cylinder 1201 is greater than the weight of the sealing plug 1202. The surface of the external threaded cylinder 1201 is fixedly connected to the inner wall of the rotating block 1203. The inner wall of the external threaded cylinder 1201 is fixedly connected to the surface of the filter cylinder 1204. The right side of the filter cylinder 1204 is fixedly connected to the left side of the sealing plate 1205. The right side of the sealing plate 1205 is in contact with the left side of the bearing outer ring 101.

[0032] It should be noted that there is a certain gap between the filter cylinder 1204 and the internal threaded cylinder 11. The diameter of the sealing plate 1205 is smaller than the inner diameter of the internal threaded cylinder 11. Through the cooperation of the internal threaded cylinder 11 and the external threaded cylinder 1201, the user can disassemble and assemble the filter 12 by rotating the rotating block 1203 on the filter 12, which makes it more convenient for the user to clean or replace the filter 12. When the external threaded cylinder 1201 is screwed into the internal threaded cylinder 11, the filter cylinder 1204 can filter the lubricating oil entering the first cylinder 2, thereby preventing the lubrication effect from being reduced due to impurities in the lubricating oil when it is injected into the outer ring 101 of the bearing.

[0033] The working principle of this utility model is as follows: First, the sealing plug 1202 is removed from the external threaded cylinder 1201. Then, lubricating oil is injected into the filter cylinder 1204 and filtered through the filter cylinder 1204. The filtered lubricating oil enters the first cylinder 2 through the oil injection pipe 10. After the gap between the first cylinder 2 and the second cylinder 3 is filled with lubricating oil, lubricating oil is continued to be injected into the first cylinder 2, which can increase the pressure of the lubricating oil on the elastic rubber sheet 6. Furthermore, the pressure on each elastic rubber sheet 6 is equal.

[0034] When the pressure applied by the lubricating oil to the elastic rubber sheet 6 is greater than the elastic force of the elastic rubber sheet 6, the elastic rubber sheet 6 will deform and create a gap between the inner wall of the elastic rubber sheet 6 and the sealing column 5. At this time, the lubricating oil can enter the oil injection hole 106 through the gap between the elastic rubber sheet 6 and the sealing column 5, and then enter the bearing outer ring 101 through the oil injection hole 106. At the same time, since the 12 oil injection holes 106 can be opened at the same time, and the flow rate of each oil injection hole 106 is the same, the lubricating oil in the bearing outer ring 101 can be evenly distributed.

[0035] After the oil filling is completed, the sealing plug 1202 is inserted into the external threaded cylinder 1201, and the external threaded cylinder 1201 is sealed by the sealing plug 1202.

[0036] When the filter 12 needs to be cleaned or replaced, the filter 12 can be removed by unscrewing the external threaded cylinder 1201 from the internal threaded cylinder 11. When the filter 12 needs to be installed, the filter 12 can be fixed in the internal threaded cylinder 11 by screwing the external threaded cylinder 1201 into the internal threaded cylinder 11.

[0037] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A rod end spherical bearing with good lubrication effect, characterized in that: The bearing assembly includes a bearing body (1), a first cylinder (2) fixedly connected to the left side of the bearing body (1), a second cylinder (3) fixedly connected to the left side of the bearing body (1), a sealing ring (4) fixedly connected to the left side of both the first cylinder (2) and the left side of both the second cylinder (3), a sealing column (5) fixedly connected to the right side of the sealing ring (4), an elastic rubber sheet (6) attached to the surface of the sealing column (5), a first ring (7) bonded to the right side of the elastic rubber sheet (6), the surface of the first ring (7) fixedly connected to the inner wall of the first cylinder (2), the inner wall of the first ring (7) fixedly connected to the surface of the second cylinder (3), a circular hole (8) opened inside the first ring (7), a second ring (9) fixedly connected to the right side of the first ring (7) and the left side of the bearing body (1), and an oil injection pipe fixedly connected to the bottom of the first cylinder (2). (10) The bearing body (1) includes an outer bearing ring (101), a cage (102), an inner bearing ring (103), cylindrical rollers (104), a bearing rod (105), and 12 oil injection holes (106). The right side of the first cylinder (2), the right side of the second cylinder (3), and the right side of the second ring (9) are all fixedly connected to the left side of the outer bearing ring (101). The inner wall of the outer bearing ring (101) is connected to the cage (102). The inner wall of the retainer (102) is in contact with the surface of the bearing inner ring (103). The surface of the bearing inner ring (103), the surface of the retainer (102), and the inner wall of the bearing outer ring (101) are all in contact with the surface of the cylindrical roller (104). The upper surface of the bearing rod (105) is fixedly connected to the bottom of the bearing outer ring (101). Twelve oil injection holes (106) are opened inside the bearing outer ring (101).

2. The rod end joint bearing with good lubrication effect according to claim 1, characterized in that: The center of the elastic rubber sheet (6), the center of the circular hole (8), and the center of the second ring (9) are all aligned with the axis of the sealing column (5), which is located to the left of the oil injection hole (106).

3. The rod end joint bearing with good lubrication effect according to claim 1, characterized in that: The bottom end of the oil injection pipe (10) is fixedly connected to an internal threaded cylinder (11), the right side of the internal threaded cylinder (11) is fixedly connected to the left side of the bearing outer ring (101), and a filter (12) is threadedly connected to the inner wall of the internal threaded cylinder (11).

4. The rod end joint bearing with good lubrication effect according to claim 3, characterized in that: The filter (12) includes an external threaded cylinder (1201), a sealing plug (1202), a rotating block (1203), a filter cylinder (1204), and a sealing plate (1205). The inner wall of the internal threaded cylinder (11) is threadedly connected to the surface of the external threaded cylinder (1201). The inner wall of the external threaded cylinder (1201) is in contact with the surface of the sealing plug (1202). The surface of the external threaded cylinder (1201) is fixedly connected to the inner wall of the rotating block (1203). The inner wall of the external threaded cylinder (1201) is fixedly connected to the surface of the filter cylinder (1204). The right side of the filter cylinder (1204) is fixedly connected to the left side of the sealing plate (1205). The right side of the sealing plate (1205) is in contact with the left side of the bearing outer ring (101).

5. A rod end joint bearing with good lubrication effect according to claim 4, characterized in that: The frictional force between the sealing plug (1202) and the external threaded cylinder (1201) is greater than the weight of the sealing plug (1202).

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