Grease ultrathin lubrication bearing

Abstract

The utility model relates to a grease ultrathin lubrication bearing, which comprises a bearing outer ring and a bearing inner ring, a mounting cavity is formed between the bearing outer ring and the bearing inner ring, a plurality of balls are arranged in the mounting cavity, an oil storage cavity is arranged in the bearing outer ring, an oil absorption sponge is arranged in the oil storage cavity, and the balls are arranged in the oil absorption sponge. A plurality of oil outlet channels communicated with the installation cavity are formed in the inner wall of the oil storage cavity, a plurality of pressing pieces are distributed on the oil absorption sponge, and a plurality of sets of pressing parts used for pressing the pressing pieces are further arranged on the bearing outer ring. According to the bearing, oiling is convenient, the oiling amount can be controlled, and a super-thick grease layer can be prevented.

Description

Technical Field

[0001] The utility model relates to the field of bearings, in particular to an ultra-thin grease lubricated bearing. Background Art

[0002] Bearings are mostly used for the connection between shafts. In order to improve the lubricity of the bearings, lubricating oil needs to be added to the bearings regularly for lubrication.

[0003] When adding lubricating oil to the existing bearing rings, the oil bottle is directly squeezed to make the lubricating oil directly sprayed onto the steel balls. When adding lubricating oil, the phenomenon of excessive lubricating oil added at one time often occurs, making the lubricating oil easy to flow out, resulting in waste and pollution. Summary of the Utility Model

[0004] The present application provides an ultra-thin grease lubricated bearing, which is convenient for refueling and the refueling amount can be controlled.

[0005] The ultra-thin grease lubricated bearing provided by the present application adopts the following technical solutions:

[0006] An ultra-thin grease lubricated bearing includes an outer bearing ring and an inner bearing ring. An installation cavity is formed between the outer bearing ring and the inner bearing ring. A plurality of balls are arranged in the installation cavity. An oil storage cavity is arranged in the outer bearing ring. An oil-absorbing sponge is arranged in the oil storage cavity. A plurality of oil outlet channels communicating with the installation cavity are formed on the inner wall of the oil storage cavity. A plurality of pressing sheets are arranged on the oil-absorbing sponge. A plurality of pressing parts for pressing the pressing sheets are further arranged on the outer bearing ring.

[0007] By adopting the above technical solutions, when it is necessary to refuel the balls of the bearing, the pressing part presses the pressing sheet, so that the oil-absorbing sponge can be compressed to press out the lubricating oil in the oil-absorbing sponge. The pressed-out lubricating oil will flow through a plurality of oil outlet channels into the installation cavity to contact the balls for lubricating the balls. Controlling the pressure of the pressing part on the pressing sheet can control the refueling amount, prevent waste of lubricating oil caused by excessive refueling, and also prevent excessive lubricating oil from condensing in the balls and the installation cavity to form a thick grease layer, weakening the influence of the grease layer on the rotation of the balls.

[0008] Preferably, the pressing part includes a first threaded hole opened on the outer bearing ring and a first bolt threadedly connected in the first threaded hole. The first bolt abuts against the pressing sheet.

[0009] By adopting the above technical solutions, when refueling is required, the first bolt is rotated to make the first bolt penetrate deeper into the first threaded hole. During the rotation process, the first bolt will push the pressing sheet towards the installation cavity. When the pressing sheet moves, it will press the oil-absorbing sponge in contact with it, so as to press out the lubricating oil from the oil-absorbing sponge, so that the lubricating oil enters the installation cavity through the oil filling channel to lubricate the balls. When more lubricating oil is needed, just screw in a few more first bolts. It is convenient for daily refueling and the refueling amount is easy to control.

[0010] Preferably, cover plates are provided on both end faces of the outer ring of the bearing, and the two cover plates shield the installation cavity.

[0011] By adopting the above technical solution, cover plates are provided to prevent foreign impurities from entering the installation cavity, thereby preventing the impurities from mixing with the lubricating oil to form grease and affecting the rotation of the ball bearings.

[0012] Preferably, annular grooves are formed on both end faces of the outer ring of the bearing, and the two cover plates are respectively embedded in the two annular grooves. Two sets of anti-detachment parts are provided on the outer ring of the bearing, and one set of anti-detachment parts is used to prevent one cover plate from falling off from the corresponding annular groove.

[0013] By adopting the above technical solution, the cover plates are located inside the outer ring of the bearing, and the outer ring of the bearing can protect the cover plates and ensure the service life of the cover plates.

[0014] Preferably, the anti-detachment part includes a through hole formed on the cover plate, a threaded hole two formed on the outer ring of the bearing, and a bolt two. The bolt two passes through the through hole and is threadedly connected to the threaded hole two, and the bolt two presses the cover plate against the annular groove.

[0015] By adopting the above technical solution, the cover plates can be easily and firmly fixed in the annular grooves.

[0016] Preferably, an oil filling channel communicating with the oil storage cavity is provided on the bottom wall of the annular groove, and a plug is provided on the cover plate. The plug is inserted into the oil filling channel and blocks the oil filling channel.

[0017] By adopting the above technical solution, when it is necessary to add oil to the oil absorption sponge, first screw all the bolts one back to their original positions to make the oil absorption sponge return to its original state. Then remove the cover plate from the annular groove and pull out the plug from the oil filling channel together, and then add lubricating oil to the oil filling channel. The added lubricating oil will flow into the oil storage cavity and be absorbed by the oil absorption sponge. After refueling, reinstall the cover plate into the annular groove and insert the plug back into the oil filling channel again, so that the plug blocks the oil filling channel and prevents the lubricating oil from flowing out of the oil filling channel.

[0018] Preferably, the plug includes a plug head and a connecting column. Threads are provided on the connecting column, and a threaded hole three matching the connecting column is provided on the cover plate.

[0019] By adopting the above technical solution, the plug can be replaced to prevent the plug from being unable to effectively block the oil filling channel after wear.

[0020] Preferably, a sealing ring is embedded on the plug head, and the sealing ring abuts against the channel wall of the oil filling channel and is deformed under pressure.

[0021] By adopting the above technical solution, the sealing of the plug to the oil filling channel is further improved.

[0022] The technical effects of the present utility model are mainly reflected in the following aspects:

[0023] 1. By rotating multiple bolts 1, the present utility model can refuel and control the refueling amount;

[0024] 2. The present utility model is provided with two cover plates to prevent external impurities from entering the installation cavity, thereby preventing the impurities from mixing with the lubricating oil to form grease and affecting the rotation of the ball;

[0025] 3. The present utility model is provided with a refueling channel for convenient refueling, and a plug is provided on the cover plate to block the refueling channel when not refueling, thereby preventing the lubricating oil from flowing out of the refueling channel. Description of the Drawings

[0026] Figure 1 is a schematic structural diagram of the bearing of the present application.

[0027] Figure 2 is Figure 1 a cross-sectional view of the bearing along the A-A line in

[0028] Figure 3 is Figure 1 a cross-sectional view of the bearing along the B-B line in

[0029] Figure 4 is Figure 3 a partial enlarged view at C in

[0030] Reference numerals: 1. Bearing outer ring; 11. Oil storage cavity; 12. Oil absorption sponge; 13. Pressing piece; 14. Oil outlet channel; 15. Ring groove; 16. Refueling channel; 2. Bearing inner ring; 3. Installation cavity; 4. Ball; 5. Pressing part; 51. Threaded hole 1; 52. Bolt 1; 6. Cover plate; 61. Threaded hole 3; 7. Anti-detachment part; 71. Perforation; 72. Threaded hole 2; 73. Bolt 2; 8. Plug; 81. Bolt head; 82. Connecting column; 9. Sealing ring;. Detailed Description of the Preferred Embodiments

[0031] The following further details the present application with reference to the accompanying drawings to make the technical solution of the present application easier to understand and master.

[0032] Referring to Figure 1 and Figure 2 , a grease ultra-thin lubrication bearing of this embodiment includes a bearing outer ring 1 and a bearing inner ring 2. An installation cavity 3 is formed between the bearing outer ring 1 and the bearing inner ring 2, and a plurality of balls 4 are arranged in the installation cavity 3. An oil storage cavity 11 is arranged inside the bearing outer ring 1, and the oil storage cavity 11 is an annular chamber. A plurality of oil outlet channels 14 communicating with the installation cavity 3 are opened on the inner wall of the oil storage cavity 11 close to the cavity.

[0033] Referring toFigures 1-4 Inside the oil storage cavity 11, there is an oil-absorbing sponge 12. The oil-absorbing sponge 12 is annular, and multiple pressing pieces 13 are arranged on the outer part of the oil-absorbing sponge 12 away from the cavity. There are also multiple groups of pressing parts 5 on the outer ring 1 of the bearing for pressing the pressing pieces 13. One group of pressing parts 5 includes a first threaded hole 51 opened on the outer ring 1 of the bearing and a first bolt 52 threadedly connected in the first threaded hole 51. Multiple first threaded holes 51 are all connected to the outside and the oil storage cavity 11. Multiple first threaded holes 51 are located on the side of the oil storage cavity 11 away from the installation cavity 3, and multiple first bolts 52 respectively abut against multiple pressing pieces 13.

[0034] Refer to Figure 1 , Figure 3 and Figure 4 , on both end faces of the outer ring 1 of the bearing, annular grooves 15 are opened. One cover plate 6 is embedded in each annular groove 15, and the two cover plates 6 shield the installation cavity 3. There are two groups of anti-detachment parts 7 on the outer ring 1 of the bearing. One group of anti-detachment parts 7 is used to prevent one cover plate 6 from falling off from the corresponding annular groove 15. One group of anti-detachment parts 7 includes multiple through holes 71 opened on the cover plate 6, multiple second threaded holes 72 opened on the outer ring 1 of the bearing, and multiple second bolts 73. Multiple second bolts 73 respectively pass through multiple through holes 71 and are threadedly connected in the corresponding second threaded holes 72. Multiple second bolts 73 press the cover plate 6 in the annular groove 15.

[0035] Refer to Figure 1 , Figure 3 and Figure 4 , a plug bolt 8 is provided on the cover plate 6. The plug bolt 8 includes a bolt head 81 and a connecting column 82. Threads are provided on the connecting column 82, and a third threaded hole 61 matching the connecting column 82 is opened on the cover plate 6. The connecting column 82 is threadedly connected in the third threaded hole 61. An oil filling channel 16 communicating with the oil storage cavity 11 is opened on the bottom wall of one of the annular grooves 15. The bolt head 81 is inserted into the oil filling channel 16 and blocks the oil filling channel 16. An annular groove 15 is opened on the side wall of the bolt head 81, and a sealing ring 9 is embedded in the annular groove 15. The sealing ring 9 abuts against the channel wall of the oil filling channel 16 and is squeezed and deformed.

[0036] Refer to Figures 1-4 , the oil filling steps of the bearing in this application are as follows:

[0037] When it is necessary to lubricate the balls 4 of the bearing with oil, rotate the first bolt 52 so that the first bolt 52 moves deeper into the first threaded hole 51 and towards the oil storage cavity 11. During the rotation of the first bolt 52, it will push the pressing piece 13 towards the installation cavity 3. When the pressing piece 13 moves, it will press the oil-absorbing sponge 12 in contact with it, thereby pressing out the lubricating oil from the oil-absorbing sponge 12, so that the lubricating oil enters the installation cavity 3 through the oil filling channel 16 to lubricate the balls 4. When it is necessary to add more lubricating oil, just tighten a few more first bolts 52. The daily oil filling is convenient and the oil filling amount is easy to control.

[0038] When there is not much lubricating oil in the oil-absorbing sponge 12 and it is necessary to add oil to the oil-absorbing sponge 12. First, screw all the bolts 52 back to their original positions to restore the oil-absorbing sponge 12 to its original shape. Then, remove the cover plate 6 with the plug 8 from the annular groove 15 and pull out the plug head 81 from the oil filling passage 16. Then, add lubricating oil to the oil filling passage 16. The added lubricating oil will flow into the oil storage cavity 11 and be absorbed by the oil-absorbing sponge 12. After refueling, reinstall the cover plate 6 into the annular groove 15 and insert the plug head 81 back into the oil filling passage 16 so that the plug head 81 blocks the oil filling passage 16 to prevent the lubricating oil from flowing out of the oil filling passage 16.

[0039] Of course, the above are only typical examples of this application. In addition, this application can also have many other specific implementation manners. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by this application.

Claims

1. An ultra-thin lubricating grease bearing, comprising an outer bearing ring (1) and an inner bearing ring (2). An installation cavity (3) is formed between the outer bearing ring (1) and the inner bearing ring (2), and a plurality of balls (4) are arranged in the installation cavity (3). It is characterized in that: An oil storage cavity (11) is provided inside the bearing outer ring (1). An oil-absorbing sponge (12) is provided inside the oil storage cavity (11). A plurality of oil outlet channels (14) communicating with the installation cavity (3) are formed on the inner wall of the oil storage cavity (11). A plurality of pressing sheets (13) are arranged on the oil-absorbing sponge (12). The bearing outer ring (1) is further provided with a plurality of pressing parts (5) for pressing the pressing sheets (13).

2. The ultra-thin lubricating bearing for grease according to claim 1, characterized in that: The pressing part (5) includes a first threaded hole (51) formed on the bearing outer ring (1), and a first bolt (52) threadedly connected in the first threaded hole (51). The first bolt (52) abuts against the pressing sheet (13).

3. The ultra-thin lubricating bearing for grease according to claim 1, characterized in that: Cover plates (6) are provided on both end faces of the bearing outer ring (1). The two cover plates (6) shield the installation cavity (3).

4. The ultra-thin lubricating bearing for grease according to claim 3, characterized in that: Circular grooves (15) are formed on both end faces of the bearing outer ring (1). The two cover plates (6) are respectively embedded in the two circular grooves (15). The bearing outer ring (1) is provided with two groups of anti-detachment parts (7). One group of the anti-detachment parts (7) is used to prevent one cover plate (6) from detaching from the corresponding circular groove (15).

5. The ultra-thin lubricating bearing for grease according to claim 4, wherein: The anti-detachment part (7) includes a through hole (71) formed on the cover plate (6), a second threaded hole (72) formed on the bearing outer ring (1), and a second bolt (73). The second bolt (73) passes through the through hole (71) and is threadedly connected in the second threaded hole (72). The second bolt (73) presses the cover plate (6) in the circular groove (15).

6. The ultra-thin lubricating bearing for grease according to claim 4, characterized in that: An oil filling channel (16) communicating with the oil storage cavity (11) is provided on the bottom wall of the circular groove (15). A plug (8) is provided on the cover plate (6). The plug (8) is inserted into the oil filling channel (16) to block the oil filling channel (16).

7. The ultra-thin lubricating bearing for grease according to claim 6, wherein: The plug (8) includes a plug head (81) and a connecting column (82). Threads are formed on the connecting column (82). A third threaded hole (61) matching the connecting column (82) is formed on the cover plate (6).

8. The ultra-thin lubricating grease bearing according to claim 7, wherein: A sealing ring (9) is embedded on the plug head (81). The sealing ring (9) abuts against the channel wall of the oil filling channel (16) and is deformed under pressure.

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