Self-lubricating high wear-resistant copper-iron base oil-containing bearing

Abstract

The application discloses a self-lubricating high-wear-resistance copper-iron-based oil-containing bearing and belongs to the technical field of bearings. The self-lubricating high-wear-resistance copper-iron-based oil-containing bearing comprises an outer ring fixedly installed on a bearing seat, an inner ring arranged on the inner side of the outer ring, and balls arranged between the outer ring and the inner ring, and the outer side of the balls is installed with a retainer; the outer side of the inner ring is fixedly installed with a sealing plate through fixing bolts, the outer side of the outer ring is fixedly installed with a sealing sheet through fixing bolts, the side, close to the balls, of the sealing plate is installed with an elastic capsule, the inner side of the elastic capsule stores lubricating oil, the outer wall of the elastic capsule is provided with oil conveying holes for conveying the lubricating oil, and the elastic capsule is further provided with a conveying control assembly for controlling the conveying direction of the lubricating oil. The self-lubricating high-wear-resistance copper-iron-based oil-containing bearing can efficiently prevent dust, automatically store and filter the oil, realize efficient self-lubrication, effectively reduce the wear of the bearing and prolong the service life.

Description

Technical Field

[0001] This invention relates to the field of bearing technology, specifically to a self-lubricating, high-wear-resistant copper-iron-based oil-impregnated bearing. Background Technology

[0002] Copper-iron-based oil-impregnated bearings are porous bearings made from copper powder and iron powder as the main raw materials, which are processed by mold pressing, high-temperature sintering, and vacuum oil impregnation.

[0003] The prior art (Chinese Patent No. CN219692019U) discloses an oil-storing powder metallurgy oil-impregnated bearing, including an outer ring and an inner ring. Both the outer and inner rings have oil storage grooves inside, and oil storage pipes are fixedly connected inside each groove. An oil inlet is located at the top of the oil storage pipe, communicating with it. An oil seepage port is located at the bottom of the oil storage pipe, and a cavity is located at the bottom of the seepage port. The oil storage pipe, seepage port, and cavity are interconnected. The cavity is filled with sponge. Oil outlets are located on the side walls of both the outer and inner rings. In this oil-storing powder metallurgy oil-impregnated bearing, lubricating oil is injected into the oil storage pipe through the inlet using a syringe. The lubricating oil inside the oil storage pipe enters the sponge inside the cavity through the seepage port. The oil outlets on the side walls of the outer and inner rings ensure that the bearing remains consistently lubricated.

[0004] The prior art (Chinese Patent No. CN221838757U) discloses an oil-containing powder metallurgy bearing capable of storing oil. The oil storage component includes a top ball and a telescopic spring. An oiling groove is provided on one side of the inner ring of the bearing, the top ball is disposed inside the oiling groove, and the telescopic spring is connected between the top ball and the bottom of the oiling groove. A first oil guide groove is provided inside the inner ring of the bearing. An oil storage groove is provided inside the inner ring of the bearing. A collection groove is provided inside the inner ring of the bearing. A connecting rope is provided inside the collection groove, and a counterweight is provided at the bottom of the connecting rope. A sponge is provided inside the collection groove, and an oil drain hole is provided on the inner side of the inner ring of the bearing. During the use of the bearing, the counterweight will shake inside the collection groove, causing the counterweight to strike the sponge. Through the impact of the counterweight, the sponge is subjected to force, which facilitates the discharge of the internal lubricating oil through the oil drain hole, thereby improving the lubrication effect.

[0005] While existing oil-impregnated bearings can store oil during use, the method of using a sponge to absorb oil increases the contact area between the oil and air, thereby accelerating the evaporation and reducing the oil's effectiveness. This makes it impossible to store the oil effectively for a long time, resulting in certain defects in its use. Summary of the Invention

[0006] The purpose of this invention is to provide a self-lubricating, high-wear-resistant copper-iron-based oil-impregnated bearing to solve the problem mentioned in the background art that although current oil-impregnated bearings on the market can store oil, the use of a sponge to absorb oil increases the contact area between the oil and air, thereby accelerating the evaporation and reducing the oil's effectiveness, making it impossible to store the oil effectively and for a long time.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a self-lubricating, high wear-resistant copper-iron-based oil-impregnated bearing, comprising an outer ring fixedly mounted on a bearing housing, an inner ring disposed on the inner side of the outer ring, and balls disposed between the outer ring and the inner ring, and a retainer mounted on the outer side of the balls;

[0008] A sealing plate is fixedly installed on the outer side of the inner ring by fixing bolts, and a sealing sheet is fixedly installed on the outer side of the outer ring by fixing bolts. An elastic bladder is installed on the side of the sealing plate near the ball, and the inner side of the elastic bladder contains lubricating oil. The outer wall of the elastic bladder has an oil delivery hole for delivering lubricating oil. At the same time, the elastic bladder is also provided with a delivery control component for controlling the delivery direction of lubricating oil. Magnetic sheets are uniformly fixedly installed on the inner wall of the elastic bladder.

[0009] Preferably, the sealing plate has a groove structure on the side away from the inner ring, and the sealing sheet is arranged in a ring structure. The sealing plate and the sealing sheet are not in contact with each other. At the same time, the inner wall of the sealing sheet is provided with an arc-shaped part, and the arc-shaped part is positioned corresponding to the groove structure on the sealing plate. An S-shaped gap is formed between the arc-shaped part and the sealing plate to improve the dustproof effect.

[0010] Preferably, an elastic sheet is fixedly installed on the outer side of the sealing plate, and the elastic sheet is arranged in a circular ring structure with an inclined cross section. The outer end of the elastic sheet is attached to the outer wall of the arc-shaped part to achieve a seal between the sealing plate and the sealing sheet.

[0011] Preferably, a counterweight is uniformly and fixedly bonded to the outer side of the elastic film, and when the sealing plate drives the elastic film to rotate, the counterweight will drive the elastic film to undergo elastic deformation under the action of centrifugal force, and the elastic film will move away from the arc-shaped part after deformation.

[0012] Preferably, the sealing plate has a threaded through hole, and an oil injection bolt is threadedly connected to the inner side of the sealing plate. The elastic bladder has an oil injection hole, which is connected to the threaded through hole on the sealing plate. Oil is injected into the inner side of the elastic bladder through the threaded through hole and the oil injection hole.

[0013] Preferably, during the rotation of the elastic bladder, the magnetic sheet will drive the elastic bladder to undergo elastic deformation under the action of centrifugal force, and the outer wall of the elastic bladder and the inner wall of the outer ring are in clearance fit. When the elastic bladder recovers its elasticity, it will draw in excess oil between the outer ring and the inner ring through the oil inlet hole, and the oil inlet hole is arranged in a ring structure.

[0014] Preferably, the delivery control component includes a first diaphragm fixedly installed at one end inside the elastic bladder, the first diaphragm being made of an elastic material and arranged in a ring shape, and the first diaphragm adhering to the inner wall of the elastic bladder to cover and block the oil delivery hole.

[0015] Preferably, the first diaphragm is uniformly provided with filter holes, and the positions of the filter holes and the oil delivery holes are correspondingly arranged. A second diaphragm with an annular structure is provided on the outer side of the first diaphragm. At the same time, one end of the second diaphragm is fixedly installed on the first diaphragm. The second diaphragm adheres to the first diaphragm to cover and block the filter holes. When the elastic bladder deforms, the oil inside it is discharged through the filter holes and the oil delivery holes. When the elastic bladder recovers its elasticity, it absorbs excess oil through the oil delivery holes. The filter holes filter wear debris in the oil.

[0016] Preferably, during the rotation of the elastic capsule, the magnetic sheets at each position pass through the lowest position, and the magnetic sheets adsorb and gather the metal debris filtered out of the oil.

[0017] Compared with the prior art, the beneficial effects of the present invention are: the self-lubricating high wear-resistant copper-iron-based oil-impregnated bearing can effectively prevent dust and can automatically store and filter oil, thereby achieving efficient self-lubrication, effectively reducing bearing wear and extending service life. The specific details are as follows;

[0018] The bearing is equipped with a sealing plate and a sealing sheet. The sealing plate and sealing sheet together can prevent dust from entering between the outer and inner rings of the bearing. The combination of the curved part and the groove on the sealing plate can form a labyrinth dust prevention effect to improve the dust prevention effect when the bearing is working.

[0019] Furthermore, it is equipped with an elastic film and a counterweight. When the bearing stops working, the elastic film adheres to the arc-shaped part on the sealing plate, so that the sealing plate and the sealing plate can achieve a complete seal through the arc-shaped part and the elastic film. This effectively reduces the evaporation rate of the lubricating oil when the bearing is not working, effectively prevents dust and other substances from entering the bearing, and avoids significant wear during subsequent operation. When the bearing is working, the elastic film will undergo elastic deformation under the centrifugal force of the counterweight, and then detach from the arc-shaped part, preventing the two from contacting each other and causing rotational wear.

[0020] Equipped with an elastic bladder and an oil inlet, the elastic bladder rotates at high speed when the bearing is working. This causes the magnetic sheet inside the elastic bladder to undergo elastic deformation under centrifugal force, allowing some of the pre-stored lubricating oil inside to be transported to the inner wall of the outer ring through the oil inlet, thus achieving self-lubrication.

[0021] Furthermore, as the bearing gradually stops working, the elastic bladder will recover under the elastic force of its own material, so that the elastic bladder can draw excess oil from the inner side of the lower end of the outer ring through the oil supply hole, thereby storing the oil and reducing the evaporation rate of the oil inside the bearing.

[0022] 3. Equipped with a magnetic sheet, a first diaphragm, a filter hole, and a second diaphragm, when the oil inlet is drawing in oil, the first diaphragm undergoes elastic deformation and rotation, causing the oil inlet to open. When the oil inlet is discharging oil, the second diaphragm undergoes elastic deformation and rotation, allowing the drawn-in oil to be filtered through the filter hole and discharged. This enables the collection of metal debris generated by wear in the oil. At the same time, the magnetic sheet can adsorb and concentrate the metal debris, facilitating subsequent cleaning and further reducing the wear rate of the bearing during operation. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0024] Figure 2 This is a schematic cross-sectional view of the present invention;

[0025] Figure 3 This is a partial exploded structural diagram of the present invention;

[0026] Figure 4 This is a schematic diagram of the sealing plate installation structure of the present invention;

[0027] Figure 5 For the present invention Figure 4 Enlarged structural diagram at point A in the middle;

[0028] Figure 6 This is a schematic diagram of the elastic capsule portion of the present invention;

[0029] Figure 7 For the present invention Figure 6 Enlarged structural diagram at point B;

[0030] Figure 8 This is a schematic diagram of the three-dimensional structure of the sealing sheet of the present invention;

[0031] Figure 9 This is a schematic diagram of the three-dimensional structure of the elastic capsule of the present invention.

[0032] In the diagram: 1. Outer ring; 2. Inner ring; 3. Ball bearing; 4. Cage; 5. Sealing plate; 6. Sealing sheet; 601. Arc-shaped part; 7. Elastic sheet; 701. Counterweight; 8. Elastic bladder; 801. Oil injection hole; 9. Oil injection bolt; 10. Magnetic sheet; 11. Oil delivery hole; 12. First diaphragm; 13. Filter hole; 14. Second diaphragm. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Example 1: In existing oil-impregnated bearings, the fixed sealing cap structure cannot effectively seal and prevent dust from entering the bearing's inner side, thus accelerating wear. To solve this technical problem, this example discloses the following technical content. Please refer to [link / reference]. Figures 1-5 As shown;

[0035] A self-lubricating, high wear-resistant copper-iron-based oil-impregnated bearing includes an outer ring 1 fixedly mounted on a bearing housing, an inner ring 2 disposed on the inner side of the outer ring 1, and balls 3 disposed between the outer ring 1 and the inner ring 2, and a cage 4 mounted on the outer side of the balls 3.

[0036] A sealing plate 5 is fixedly installed on the outer side of the inner ring 2 by fixing bolts, and a sealing sheet 6 is fixedly installed on the outer side of the outer ring 1 by fixing bolts. The sealing plate 5 has a groove structure on the side away from the inner ring 2, and the sealing sheet 6 is arranged in a ring structure. The sealing plate 5 and the sealing sheet 6 do not fit together. At the same time, an arc-shaped part 601 is provided on the inner wall of the sealing sheet 6, and the arc-shaped part 601 and the groove structure on the sealing plate 5 are positioned correspondingly. An S-shaped gap is formed between the arc-shaped part 601 and the sealing plate 5 to improve the dustproof effect.

[0037] An elastic sheet 7 is fixedly installed on the outer side of the sealing plate 5. The elastic sheet 7 is arranged in a circular structure and its cross-section is inclined. The outer end of the elastic sheet 7 is attached to the outer wall of the arc-shaped part 601 to achieve a seal between the sealing plate 5 and the sealing sheet 6. A counterweight 701 is uniformly fixedly bonded to the outer side of the elastic sheet 7. When the sealing plate 5 drives the elastic sheet 7 to rotate, the counterweight 701 will drive the elastic sheet 7 to undergo elastic deformation under the action of centrifugal force. After the elastic sheet 7 deforms, it moves away from the arc-shaped part 601.

[0038] The outer ring 1 and inner ring 2 are connected to the horizontally arranged bearing housing and the rotating shaft, respectively. Before the bearing operates, the elastic sheet 7 will adhere to the arc-shaped part 601 of the sealing plate 6, thereby achieving effective sealing on both sides of the outer ring 1 and inner ring 2, preventing dust and other impurities from entering between the outer ring 1 and inner ring 2. As the inner ring 2 rotates, it will drive the sealing plate 5 to rotate synchronously. At this time, the elastic sheet 7 on the sealing plate 5 will rotate synchronously, causing the evenly arranged counterweights 701 on the elastic sheet 7 to deform and rotate under the action of centrifugal force, thereby causing the elastic sheet 7 to detach from the arc-shaped part 601, thus avoiding continuous friction and wear between the two during the bearing operation. The arc-shaped part 601 and the groove part of the sealing plate 5 form a labyrinth sealing mechanism, thereby achieving effective dust prevention during bearing operation.

[0039] Example 2: The technical content disclosed in this example is a further improvement based on Example 1. Existing oil-impregnated bearings are inconvenient for automatic oil storage and lubrication during use, and cannot filter or clean metal shavings in the oil. To further solve this technical problem, this example discloses the following technical content: Figures 4-9 As shown; an elastic bladder 8 is installed on the side of the sealing plate 5 near the ball 3, and the inner side of the elastic bladder 8 stores lubricating oil. The outer wall of the elastic bladder 8 is provided with an oil delivery hole 11 for delivering lubricating oil. At the same time, the elastic bladder 8 is also provided with a delivery control component for controlling the delivery direction of lubricating oil. Magnetic sheets 10 are uniformly fixedly installed on the inner wall of the elastic bladder 8. The sealing plate 5 is provided with a threaded through hole, and an oil injection bolt 9 is threadedly connected to the inner side of the sealing plate 5. The elastic bladder 8 is provided with an oil injection hole 801, and the oil injection hole 801 is connected to the threaded through hole on the sealing plate 5. Oil is injected into the inner side of the elastic bladder 8 through the threaded through hole and the oil injection hole 801.

[0040] During the rotation of the elastic bladder 8, the magnetic sheet 10 will drive the elastic bladder 8 to undergo elastic deformation under the action of centrifugal force. The outer wall of the elastic bladder 8 and the inner wall of the outer ring 1 are in clearance fit. When the elastic bladder 8 recovers its elasticity, it will draw in excess oil between the outer ring 1 and the inner ring 2 through the oil supply hole 11. At the same time, the oil supply hole 11 is arranged in a ring structure.

[0041] The delivery control assembly includes a first diaphragm 12 fixedly installed at one end inside an elastic bladder 8. The first diaphragm 12 is made of an elastic material and is arranged in a ring shape. The first diaphragm 12 adheres to the inner wall of the elastic bladder 8 to cover and seal the oil delivery hole 11. Filter holes 13 are evenly distributed on the first diaphragm 12, and the positions of the filter holes 13 and the oil delivery hole 11 correspond to each other. A second diaphragm 14 with a ring structure is provided on the outer side of the first diaphragm 12, and one end of the second diaphragm 14 is fixed... The first diaphragm 12 is fixedly installed on the second diaphragm 14, which is attached to the first diaphragm 12 to cover and block the filter hole 13. When the elastic bladder 8 deforms, the oil inside it is discharged through the filter hole 13 and the oil supply hole 11. When the elastic bladder 8 recovers its elasticity, it absorbs excess oil through the oil supply hole 11. The filter hole 13 filters the wear debris in the oil. During the rotation of the elastic bladder 8, the magnetic plates 10 at each position will pass through the lowest position, and the magnetic plates 10 adsorb and gather the metal debris filtered out of the oil.

[0042] Lubricating oil can be injected or added to the elastic bladder 8 through the threaded hole on the sealing plate 5 and the oil injection hole 801 on the elastic bladder 8. After the oil is added, the oil injection hole 801 is sealed by connecting the oil injection bolt 9 to the threaded hole. When the bearing is working, the inner ring 2 will drive the sealing plate 5 to rotate synchronously and rapidly. At this time, the sealing plate 5 will drive the elastic bladder 8 bonded to its inner side to rotate synchronously. At this time, the magnetic sheets 10 uniformly fixed on the inner wall of the elastic bladder 8 will use centrifugal force to pull the elastic bladder 8 to undergo elastic deformation during the rotation, so that the second diaphragm 14 on the inner side of the elastic bladder 8 will deform and rotate under pressure. At this time, the oil can be filtered through the filter hole 13. The lubricating oil is then discharged through the oil inlet 11 and enters the inner wall of the outer ring 1, achieving automatic injection and lubrication of the lubricating oil. At the same time, the magnetic sheet 10 can adsorb and collect the filtered metal waste, facilitating subsequent processing and preventing the metal waste from re-entering the bearing lubrication system and increasing bearing wear. When the bearing gradually stops working, the elastic bladder 8 will recover under the elasticity of its own material, causing the first diaphragm 12 to deform and rotate towards the inner side of the elastic bladder 8 under pressure. This allows the elastic bladder 8 to absorb and store excess lubricating oil from the inner wall of the outer ring 1 through the oil inlet 11, reducing the evaporation efficiency of the oil and further improving the lubrication effect of the bearing and the duration of the lubrication effect of the oil.

[0043] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0044] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

Claims

1. A self-lubricating high wear-resistant copper-iron-based oil-containing bearing, comprising an outer ring (1) fixedly installed on a bearing seat, an inner ring (2) provided on the inner side of the outer ring (1), and a plurality of balls (3) provided between the outer ring (1) and the inner ring (2), and a retainer (4) installed on the outer side of the balls (3); characterized in that A sealing plate (5) is fixedly installed on the outer side of the inner ring (2) by a fixing bolt, and a sealing sheet (6) is fixedly installed on the outer side of the outer ring (1) by a fixing bolt, an elastic capsule (8) is installed on the side of the sealing plate (5) close to the balls (3), lubricating oil is stored in the inner side of the elastic capsule (8), an oil delivery hole (11) for delivering the lubricating oil is formed in the outer wall of the elastic capsule (8), a delivery control assembly for controlling the delivery direction of the lubricating oil is further provided on the elastic capsule (8), and a magnetic sheet (10) is fixedly installed on the inner wall of the elastic capsule (8). During rotation of the elastic capsule (8), the magnetic sheet (10) drives the elastic capsule (8) to elastically deform under the action of centrifugal force, the outer wall of the elastic capsule (8) is in clearance fit with the inner wall of the outer ring (1), and when the elastic capsule (8) elastically restores, it absorbs the excess oil between the outer ring (1) and the inner ring (2) through the oil delivery hole (11), and the oil delivery hole (11) is arranged in an annular structure. The delivery control assembly comprises a first diaphragm (12) fixedly installed at one end on the inner side of the elastic capsule (8), the first diaphragm (12) is of an elastic material structure and is arranged in an annular structure, and the first diaphragm (12) is attached to the inner wall of the elastic capsule (8) to cover and block the oil delivery hole (11). A plurality of filter holes (13) are uniformly formed in the first diaphragm (12), the filter holes (13) and the oil delivery hole (11) are arranged in position correspondence, an annular second diaphragm (14) is arranged on the outer side of the first diaphragm (12), one end of the second diaphragm (14) is fixedly installed on the first diaphragm (12), the second diaphragm (14) is attached to the first diaphragm (12) to cover and block the filter holes (13), when the elastic capsule (8) deforms, the oil in the inner side of the elastic capsule (8) is discharged through the filter holes (13) and the oil delivery hole (11), when the elastic capsule (8) elastically restores, it absorbs the excess oil through the oil delivery hole (11), and the filter holes (13) filter the wear debris in the oil.

2. A self-lubricating high wear resistant copper-iron based oil-impregnated bearing according to claim 1, characterized in that: A groove structure is formed on the side of the sealing plate (5) away from the inner ring (2), the sealing sheet (6) is arranged in an annular structure, the sealing plate (5) and the sealing sheet (6) are not attached to each other, an arc-shaped portion (601) is arranged at the inner wall of the sealing sheet (6), the arc-shaped portion (601) and the groove structure formed on the sealing plate (5) are arranged in position correspondence, and an S-shaped gap for improving the dustproof effect is formed between the arc-shaped portion (601) and the sealing plate (5).

3. A self-lubricating high wear resistant copper-iron based oil-impregnated bearing according to claim 2, characterized in that: The outer side of the sealing plate (5) is fixedly provided with an elastic rubber sheet (7), the elastic rubber sheet (7) is in a circular ring structure, the cross section of the elastic rubber sheet (7) is in an inclined shape, the outer end of the elastic rubber sheet (7) is attached to the outer wall of the arc-shaped part (601), and the sealing between the sealing plate (5) and the sealing sheet (6) is realized.

4. A self-lubricating high wear resistant copper-iron based oil-impregnated bearing according to claim 3, characterized in that: The outer side of the elastic rubber sheet (7) is uniformly fixedly provided with a counterweight sheet (701), when the sealing plate (5) drives the elastic rubber sheet (7) to rotate, the counterweight sheet (701) drives the elastic rubber sheet (7) to elastically deform under the action of centrifugal force, and the elastic rubber sheet (7) is away from the arc-shaped part (601) after deformation.

5. A self-lubricating high wear resistant copper-iron based oil-impregnated bearing according to claim 1, characterized in that: The sealing plate (5) is provided with a threaded through hole, the inner side of the sealing plate (5) is threadedly connected with an oil injection bolt (9), the elastic capsule (8) is provided with an oil injection hole (801), the oil injection hole (801) and the threaded through hole of the sealing plate (5) are communicated, and the inner side of the elastic capsule (8) is injected with oil through the threaded through hole and the oil injection hole (801).

6. A self-lubricating high wear resistant copper-iron based oil-impregnated bearing according to claim 1, characterized in that: During the rotation of the elastic capsule (8), each position magnetic sheet (10) passes through the lowermost position, and the magnetic sheet (10) adsorbs and gathers the metal scraps filtered out from the oil.

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