A ball bearing

Abstract

The present application discloses a ball bearing, which relates to the field of bearing technology, and includes an inner ring, an outer ring, a retaining frame and a plurality of balls. A first oil storage ring groove is provided on the inner side wall of the outer ring, a second oil storage ring groove is provided on the outer side wall of the inner ring, an oil outlet hole is provided in the inner ring, and an oil supply mechanism for supplying the lubricant in the first oil storage ring groove into the second oil storage ring groove is provided on the outer ring. The present application utilizes an oil supply mechanism, and when the trigger rod moves through the first transmission assembly, the trigger rod can drive the piston to reciprocate in the slide groove through the first transmission assembly. After the piston reciprocates for many times, the lubricant in the first oil storage ring groove can be supplied into the second oil storage ring groove. The inner ring rotates and throws the lubricant in the second oil storage ring groove through the oil outlet hole to between the ball and the retaining frame, so that the lubricant can lubricate the ball and the retaining frame, reducing the wear between the ball and the retaining frame and increasing the service life of the bearing.

Description

Technical Field

[0001] The present application relates to the technical field of bearings, and in particular to a ball bearing. Background Art

[0002] Ball bearings are a common type of rolling bearing, mainly composed of an inner ring, an outer ring, rolling elements and a cage. The characteristic of ball bearings is that they use the sphere as a rolling element, which reduces friction, reduces energy consumption, and improves rotation accuracy and stability. They are widely used in various machinery, automobiles, motors and other fields.

[0003] At present, the outer ring of the ball bearing is usually kept fixed, and the inner ring rotates. During the rotation process, the inner ring of the bearing drives the balls to roll, and the balls drive the cage to rotate, and the speed of the cage is lower than the speed of the inner ring of the bearing. During the rotation of the inner ring and the cage of the bearing, the lubricant in the bearing will rotate with it and be affected by centrifugal force. After the bearing is used for a long time, the lubricant will move to the outer ring side of the bearing due to the centrifugal force, making the lubricant unevenly distributed in the bearing. At this time, there is less lubricant near the inner ring side of the bearing, which increases the friction between the ball and the cage, thereby increasing the wear of the ball and reducing the service life of the bearing. Summary of the invention

[0004] In order to reduce the friction between the balls and the retaining frame, the present application provides a ball bearing.

[0005] The present application provides a ball bearing adopting the following technical solution:

[0006] A ball bearing comprises an inner ring, an outer ring, a retainer and a plurality of balls, wherein the plurality of balls are arranged to roll between the inner ring and the outer ring, the retainer is arranged on the plurality of balls, a first oil storage ring groove is provided on the inner side wall of the outer ring, a second oil storage ring groove is provided on the outer side wall of the inner ring, an oil outlet hole is provided in the inner ring, one end of the oil outlet hole is connected to the second oil storage ring groove, and the other end faces between the balls and the retainer; an oil supply mechanism is provided on the outer ring, and the oil supply mechanism comprises a trigger rod, an oil supply pipe, a piston and a first transmission component, a slide groove is provided on the inner side wall of the outer ring, the piston is slidably arranged in the slide groove, and one end of the oil supply pipe is provided In the slide groove of the outer ring, the other end extends to the second oil storage ring groove. An oil inlet hole connecting the slide groove and the first oil storage ring groove is opened in the outer ring. The first transmission component is arranged in the first oil storage ring groove of the outer ring. The first transmission component is connected to the piston. The trigger rod is fixedly installed on the outside of the retaining frame. The end of the trigger rod extends into the first oil storage ring groove. When the retaining frame drives the trigger rod to move through the first transmission component, the first transmission component drives the piston to reciprocate in the slide groove and supplies the lubricant in the first oil storage ring groove into the second oil storage ring groove. The inner ring rotates and throws the lubricant in the second oil storage ring groove through the oil outlet hole to between the ball and the retaining frame.

[0007] By adopting the above technical solution, during the use of the bearing, the lubricant in the bearing will move to the first oil storage ring groove of the outer ring under the action of centrifugal force. When the inner ring of the bearing rotates, the retaining frame will rotate at a low speed, and the retaining frame will drive the trigger rod to rotate along the circumference of the bearing. When the trigger rod moves through the first transmission component, the trigger rod can drive the piston to reciprocate in the slide groove through the first transmission component. When the piston moves in a direction away from the bearing axis, the piston can suck the lubricant in the first oil storage ring groove into the slide groove. When the piston moves in a direction close to the bearing axis, the piston can push the lubricant in the slide groove into the oil supply pipe. After the piston has reciprocated several times, the lubricant in the first oil storage ring groove can be supplied to the second oil storage ring groove. The inner ring rotates and throws the lubricant in the second oil storage ring groove through the oil outlet hole to between the ball and the retaining frame, so that the lubricant can lubricate the ball and the retaining frame, thereby reducing the wear between the ball and the retaining frame and improving the service life of the bearing.

[0008] Preferably, the first transmission assembly includes an elastic member, a transmission rod, a transmission gear, a first transmission rack and a second transmission rack, the transmission gear is rotatably arranged in the first oil storage ring groove of the outer ring, the first transmission rack is arc-shaped and is arranged on the trigger rod, the first transmission rack is meshed with the transmission gear, the second transmission rack is slidably arranged in the outer ring along the diameter direction of the bearing and meshed with the transmission gear, the second transmission rack is staggered with the first transmission rack along the axial direction of the bearing, the transmission rod is slidably arranged in the outer ring, the two ends of the transmission rod are respectively fixedly connected with the second transmission rack and the piston, the elastic member is arranged in the sliding groove of the outer ring and abuts against the side wall of the piston away from the bearing axis direction, the trigger rod drives the first transmission rack to move and mesh with the transmission gear, the first transmission rack drives the piston to move in the direction away from the bearing axis through the transmission gear, the second transmission rack and the transmission rod, and after the first transmission rack is separated from the transmission gear, the elastic member pushes the piston to move in the direction close to the bearing axis.

[0009] By adopting the above technical solution, the retainer drives the first transmission rack to move through the trigger rod. When the first transmission rack moves to engage the transmission gear, the first transmission rack drives the transmission gear to rotate, the transmission gear drives the second transmission rack to move, the second transmission rack drives the transmission rod to move, the transmission rod drives the piston to move away from the bearing axis, the piston moves and squeezes the elastic member, at this time, the piston can suck the lubricant in the first oil storage ring groove into the slide groove; when the first transmission rack moves and separates from the transmission gear, the elastic member pushes the piston to move toward the direction close to the bearing axis, and the piston pushes the lubricant in the slide groove into the oil supply pipe. With this arrangement, after the piston moves back and forth many times, the lubricant in the first oil storage ring groove can be supplied to the second oil storage ring groove.

[0010] Preferably, a check plate is rotatably provided inside the oil supply pipe, and a first elastic reset member is provided inside the oil supply pipe at the rotation position of the check plate for driving the check plate to rotate and close the oil supply pipe. When the piston moves toward the direction close to the bearing axis, the lubricant pushes the check plate to rotate and open the oil supply pipe. When the piston moves toward the direction away from the bearing axis, the first elastic reset member drives the check plate to rotate and close the oil supply pipe.

[0011] By adopting the above technical solution, when the piston moves toward the direction approaching the bearing axis, the piston pushes the lubricant in the slide groove into the oil supply pipe, and the lubricant pushes the check plate to rotate and open the oil supply pipe, so that the lubricant can enter the oil supply pipe; when the piston moves toward the direction away from the bearing axis, the first elastic return member drives the check plate to rotate and close the oil supply pipe, so that the lubricant in the oil supply pipe will not be sucked into the slide groove. At this time, the piston sucks the lubricant in the first oil storage ring groove into the slide groove through the oil inlet hole.

[0012] Preferably, the outer ring is provided with a sealing door rotatably disposed in the oil inlet hole, and the outer ring is provided with a second elastic reset member at the rotation position of the sealing door for pushing the sealing door to rotate and close the oil inlet hole.

[0013] By adopting the above technical solution, when the piston moves in a direction away from the bearing axis, the oil supply pipe is closed, and the piston absorbs the lubricant in the oil inlet hole. The lubricant pushes the sealing door to rotate and open, so that the lubricant in the first oil storage ring groove can enter the slide groove through the oil inlet hole; when the piston moves in a direction close to the bearing axis, the second elastic reset part drives the sealing door to rotate and seal the oil inlet hole, thereby reducing the situation where the lubricant flows back from the oil inlet hole to the first oil storage ring groove.

[0014] Preferably, a push plate is provided at one end of the trigger rod located in the first oil storage ring groove, and the end of the push plate away from the trigger rod is inclined in a direction away from the movement of the trigger rod.

[0015] By adopting the above technical solution, the trigger rod drives the push plate to move synchronously during its movement, and the lubricant in the first oil storage ring groove is stirred during the movement of the push plate, so that the piston can absorb the lubricant into the slide groove.

[0016] Preferably, the push plate is rotatably set on the trigger rod, the first transmission rack is slidably set at the end of the trigger rod along the length direction of the trigger rod through the second transmission assembly, and the trigger rod is provided with a second transmission assembly, the second transmission assembly is transmission-connected to the push plate and the first transmission rack, and the rotation angle of the push plate is proportional to the moving distance of the first transmission rack.

[0017] By adopting the above technical solution, when the lubricant in the first oil storage ring groove is less, the resistance encountered by the push plate during movement is smaller, the push plate rotates at a smaller angle, and the push plate drives the first transmission rack to move a smaller distance through the second transmission component. At this time, the first transmission rack is separated from the transmission gear, and the oil supply mechanism does not supply oil; when the lubricant in the first oil storage ring groove is more, the resistance encountered by the push plate during movement is larger, the push plate rotates at a larger angle, and the push plate drives the first transmission rack to move a larger distance through the second transmission component. At this time, the first transmission rack is meshed with the transmission gear, and the oil supply mechanism supplies oil. With such a configuration, the oil supply mechanism can automatically start or stop the oil supply according to the amount of lubricant in the first oil storage ring groove, so that the lubricant is more evenly distributed in the bearing.

[0018] Preferably, the second transmission assembly includes a driving rod, a lifting sleeve and a third elastic return piece, the driving rod is coaxially rotatably arranged in the trigger rod, the trigger rod is provided with a rotation groove, the push plate passes through the rotation groove and is fixedly connected to the driving rod, the third elastic return piece is arranged in the trigger rod, the two ends of the third elastic return piece are respectively connected to the inner wall of the trigger rod and the outer wall of the driving rod, the lifting sleeve is threadedly sleeved on the end of the driving rod away from the bearing axis direction, the end of the lifting sleeve extends to the outside of the trigger rod, the first transmission rack is fixedly arranged on the end of the lifting sleeve, the trigger rod is provided with a guide groove, the outer side wall of the lifting sleeve is provided with a guide block, and the guide block is slidably arranged in the guide groove along the moving direction of the lifting sleeve.

[0019] By adopting the above technical solution, the push plate drives the driving rod to rotate in the trigger rod, the driving rod drives the third elastic reset piece to deform, the third elastic reset piece stores elastic potential energy, the driving rod drives the lifting sleeve to move in the trigger rod, the lifting sleeve drives the first transmission rack to move, the greater the rotation angle of the push plate, the greater the movement distance of the first transmission rack, when the push plate rotates to the maximum angle, the first transmission rack moves to engage the transmission gear; when the lubricant in the first oil storage ring groove is reduced, the third elastic reset piece can release the elastic potential energy and drive the push plate to rotate and reset through the driving rod, thereby reducing the rotation angle of the push plate and causing the first transmission rack to disengage from the transmission gear.

[0020] Preferably, a movable groove is provided on the inner wall of the lifting sleeve along the thread direction of the lifting sleeve, and a locking groove connected with the movable groove is provided on the inner wall of the lifting sleeve along its own circumference, and the locking groove is located at the end of the movable groove close to the bearing axis direction, and a locking block is fixedly provided on the outer side wall of the driving rod, and the locking block is slidably provided in the movable groove and the locking groove, and when the lifting sleeve drives the first transmission rack to move and abut against the transmission gear, the locking block moves into the locking groove and limits and locks the lifting sleeve along the length direction of the trigger rod.

[0021] By adopting the above technical solution, when the push plate rotates to the maximum angle, the lifting sleeve moves to the maximum stroke and drives the first transmission rack to move and engage the transmission gear. At this time, the locking block moves from the moving groove to the locking groove and limits and locks the lifting sleeve along the length direction of the trigger rod, so that when the first transmission rack drives the transmission gear to rotate, the lifting sleeve will not move, thereby improving the stability of the first transmission rack during transmission; when the lubricant in the first oil storage ring groove is reduced, the third elastic reset part releases elastic potential energy to drive the drive rod to rotate, and the drive rod drives the locking block to rotate from the locking groove to the moving groove, thereby unlocking the lifting sleeve, so that the lifting sleeve drives the first transmission rack to move and disengage from the transmission rack.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. By using the oil supply mechanism, when the trigger rod moves through the first transmission assembly, the trigger rod can drive the piston to reciprocate in the slide groove through the first transmission assembly. When the piston moves away from the bearing axis, the piston can suck the lubricant in the first oil storage ring groove into the slide groove. When the piston moves toward the bearing axis, the piston can push the lubricant in the slide groove into the oil supply pipe. After the piston reciprocates for many times, the lubricant in the first oil storage ring groove can be supplied to the second oil storage ring groove. The inner ring rotates and throws the lubricant in the second oil storage ring groove through the oil outlet hole to between the ball and the cage, so that the lubricant can lubricate the ball and the cage, reducing the wear between the ball and the cage and increasing the service life of the bearing.

[0024] 2. With the help of the push plate, the trigger rod drives the push plate to move synchronously during its movement, and the lubricant in the first oil storage ring groove is stirred during its movement, so that the piston can absorb the lubricant into the slide groove;

[0025] 3. Through the second transmission component, when the lubricant in the first oil storage ring groove is less, the resistance encountered by the push plate during movement is smaller, the push plate rotates at a smaller angle, and the push plate drives the first transmission rack to move a smaller distance through the second transmission component. At this time, the first transmission rack is separated from the transmission gear, and the oil supply mechanism does not supply oil. When the lubricant in the first oil storage ring groove is more, the resistance encountered by the push plate during movement is greater, the push plate rotates at a larger angle, and the push plate drives the first transmission rack to move a larger distance through the second transmission component. At this time, the first transmission rack is meshed with the transmission gear, and the oil supply mechanism supplies oil, so that the oil supply mechanism can automatically start or stop the oil supply according to the dosage of the lubricant in the first oil storage ring groove, thereby making the lubricant more evenly distributed in the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall structure of the ball bearing of this application;

[0027] Figure 2 This is a partial structural cross-sectional view of the ball bearing of the present application, in which the piston moves to a side away from the bearing axis direction;

[0028] Figure 3 For this application Figure 2 The enlarged schematic diagram at A in the middle;

[0029] Figure 4 For this application Figure 2 The enlarged schematic diagram of point B in the middle;

[0030] Figure 5 A partial structural cross-sectional view of the ball bearing for this application to highlight the opening state of the check plate;

[0031] Figure 6 The ball bearing of this application is a partial structural schematic diagram to highlight the first transmission assembly;

[0032] Figure 7 The ball bearing of this application is a cross-sectional view of a part of the structure of the second transmission component to highlight the structure;

[0033] Figure 8 The ball bearing for this application is an exploded cross-sectional view showing part of the structure of the moving groove and the locking groove.

[0034] Figure numerals: 1, inner ring; 2, outer ring; 3, retainer; 4, first oil storage ring groove; 5, second oil storage ring groove; 6, oil outlet hole; 7, oil supply mechanism; 71, trigger rod; 72, oil supply pipe; 73, piston; 74, first transmission assembly; 741, elastic member; 742, transmission rod; 743, transmission gear; 744, first transmission rack; 745, second transmission rack; 8, slide groove; 9, oil inlet hole; 10, check plate; 11, first elastic member Reset member; 12. Ball bearing; 13. Sealing door; 14. Second elastic reset member; 16. Push plate; 17. Second transmission assembly; 171. Drive rod; 172. Lifting sleeve; 173. Third elastic reset member; 18. Rotating groove; 19. Guide block; 20. Guide groove; 21. Moving groove; 22. Locking groove; 23. Locking block; 24. Threaded column; 25. Sealing ring; 26. Mounting ring; 27. Rotating shaft; 28. Connecting column; 29. ​​Sliding cavity. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-Figure 8 This application is described in further detail.

[0036] The embodiment of the present application discloses a ball bearing.

[0037] Reference Figure 1 and Figure 2A ball bearing comprises an inner ring 1, an outer ring 2, a retainer 3 and a plurality of balls 12. Sealing rings 25 are installed at both ends of the inner side wall of the outer ring 2 along its own axial direction. The plurality of balls 12 are rollingly installed in the raceway between the inner ring 1 and the outer ring 2, and the retainer 3 is installed on the plurality of balls 12. A first oil storage ring groove 4 is opened on the inner side wall of the outer ring 2 and on both sides of the raceway, and a second oil storage ring groove 5 is opened on the outer side wall of the inner ring 1 and on both sides of the raceway.

[0038] Four oil supply mechanisms 7 are installed on the outer ring 2 and the retainer 3. The four oil supply mechanisms 7 are located on opposite sides of the ball 12, and the two oil supply mechanisms 7 on each side of the ball 12 are installed symmetrically along the bearing axis. During the use of the bearing, the lubricant in the bearing will move to the first oil storage ring groove 4 of the outer ring 2 under the action of centrifugal force. When the inner ring 1 of the bearing rotates, the retainer 3 will rotate at a low speed. The rotation of the retainer 3 can drive the oil supply mechanism 7 to operate, and the oil supply mechanism 7 supplies the lubricant in the first oil storage ring groove 4 into the second oil storage ring groove 5.

[0039] A plurality of oil outlet holes 6 connected to the second oil storage ring groove 5 are provided at equal intervals along the inner ring 1 along its own circumference. The oil outlet holes 6 are located on the side of the second oil storage ring groove 5 away from the bearing axis, and the end of the oil outlet hole 6 away from the second oil storage ring groove 5 points to between the ball 12 and the retainer 3. After the oil supply mechanism 7 supplies lubricant into the second oil storage ring groove 5, the inner ring 1 rotates and throws the lubricant in the second oil storage ring groove 5 to between the ball 12 and the retainer 3 through the oil outlet holes 6, so that the lubricant can lubricate the ball 12 and the retainer 3, reducing the wear between the ball 12 and the retainer 3 and increasing the service life of the bearing.

[0040] Reference Figure 2 , Figure 3 and Figure 4 Specifically, the oil supply mechanism 7 includes a trigger rod 71, an oil supply pipe 72, a piston 73 and a first transmission assembly 74. A slide groove 8 is provided in the outer ring 2 along its diameter direction. The slide groove 8 is located on the side of the first oil storage ring groove 4 away from the ball 12, and the piston 73 is slidably installed in the slide groove 8 along the diameter direction of the outer ring 2. An oil inlet hole 9 is provided in the outer ring 2, and the two ends of the oil inlet hole 9 are connected to the slide groove 8 and the first oil storage ring groove 4 respectively.

[0041] Two sealing doors 13 are rotatably installed in the oil inlet hole 9, and a second elastic reset member 14 is installed at the rotation connection of the sealing door 13. The second elastic reset member 14 is fixedly connected to the inner wall of the outer ring 2 located at the oil inlet hole 9 and the sealing door 13. In this application, the second elastic reset member 14 can be selected as a folding spring. The second elastic reset member 14 acts on the sealing door 13, and the two sealing doors 13 rotate and close in a direction close to each other to block the oil inlet hole 9.

[0042] Reference Figure 2 , Figure 4 and Figure 5 The oil supply pipe 72 is fixedly installed on the inner wall of the outer ring 2 along the diameter direction of the outer ring 2. One end of the oil supply pipe 72 is located in the slide groove 8, and the other end extends into the second oil storage ring groove 5. Three mounting rings 26 are fixedly installed in the oil supply pipe 72 at equal intervals along its own length direction. A check plate 10 is rotatably installed on each mounting ring 26. A first elastic reset member 11 is installed at the rotation connection of the check plate 10. The first elastic reset member 11 is fixedly connected to the check plate 10 and the mounting ring 26. In the present application, the first elastic reset member 11 can be selected as a torsion spring. The first elastic reset member 11 acts on the check plate 10, so that the check plate 10 rotates into the mounting ring 26, thereby blocking the oil supply pipe 72.

[0043] The trigger rod 71 is fixedly mounted on the outer side of the retainer 3 along the diameter direction of the inner ring 1, and the first transmission assembly 74 is mounted in the first oil storage ring groove 4 of the outer ring 2, and the first transmission assembly 74 is connected to the piston 73. When the retainer 3 drives the trigger rod 71 to move through the first transmission assembly 74, the first transmission assembly 74 can drive the piston 73 to slide back and forth once in the slide groove 8.

[0044] When the piston 73 moves away from the bearing axis, the second elastic reset member 14 drives the check plate 10 to rotate and seals the oil supply pipe 72. During the movement of the piston 73, the lubricant in the oil inlet hole 9 is sucked into the slide groove 8. The lubricant pushes the two sealing doors 13 to rotate and open in the direction of the slide groove 8, so that the lubricant in the first oil storage ring groove 4 can be sucked into the slide groove 8 through the oil inlet hole 9.

[0045] When the piston 73 moves toward the direction close to the bearing axis, the first elastic reset member 11 pushes the two sealing doors 13 to close and block the oil inlet hole 9. During the movement of the piston 73, the lubricant in the slide groove 8 is pushed into the oil supply pipe 72. The lubricant pushes the check plate 10 to rotate and open and release the blockage of the oil supply pipe 72, so that the lubricant can enter the oil supply pipe 72. After the piston 73 repeats the above steps and moves back and forth multiple times, the lubricant can be supplied into the second oil storage ring groove 5.

[0046] Reference Figure 2 , Figure 4 and Figure 6 The first transmission assembly 74 includes an elastic member 741, a transmission rod 742, a transmission gear 743, a first transmission rack 744 and a second transmission rack 745. The elastic member 741 is installed in the slide groove 8. The elastic member 741 is located on the side of the piston 73 away from the oil supply pipe 72. In the present application, the elastic member 741 can be selected as a spring, and the elastic member 741 can push the piston 73 to move toward the direction close to the bearing axis.

[0047] The transmission gear 743 is rotatably mounted in the first oil storage ring groove 4 of the outer ring 2 via the rotating shaft 27. The second transmission rack 745 is slidably mounted in the outer ring 2 along the axial direction of the outer ring 2, and the second transmission rack 745 is meshed with the transmission gear 743. A sliding cavity 29 is formed in the outer ring 2 on the side of the transmission gear 743 away from the bearing axis direction. The transmission rod 742 is C-shaped and slidably mounted in the sliding cavity 29 along the diameter direction of the bearing. The end of the second transmission rack 745 away from the bearing axis direction extends into the sliding cavity 29 and is fixedly connected to one end of the transmission rod 742. The other end of the transmission rod 742 penetrates into the slide groove 8 and is fixedly connected to the piston 73.

[0048] The first transmission rack 744 is arranged in an arc shape along the circumference of the outer ring 2. The first transmission rack 744 is installed on the trigger rod 71 and is located in the first oil storage ring groove 4. The outer side of the first transmission rack 744 is meshed with the transmission gear 743, and the first transmission rack 744 and the second transmission rack 745 are staggered along the axial direction of the outer ring 2.

[0049] When the trigger rod 71 drives the first transmission rack 744 to move and engage the transmission gear 743, the first transmission rack 744 can drive the transmission gear 743 to rotate, and the transmission gear 743 drives the second transmission rack 745 to move away from the bearing axis. The second transmission rack 745 then drives the piston 73 to move away from the bearing axis through the transmission rod 742. At this time, the piston 73 squeezes the elastic member 741 and sucks the lubricant in the first oil storage ring groove 4 into the slide groove 8. When the first transmission rack 744 moves past the transmission gear 743 and separates from the transmission gear 743, the elastic member 741 releases elastic potential energy and pushes the piston 73 to move toward the bearing axis. At this time, the piston 73 pushes the lubricant in the slide groove 8 into the oil supply pipe 72.

[0050] Reference Figure 6 and Figure 7 A rotation groove 18 is provided on the outer wall of the trigger rod 71. The trigger rod 71 is located in the rotation groove 18 and a push plate 16 is rotatably installed. The push plate 16 can rotate in the opposite direction of the moving direction of the trigger rod 71. The first transmission rack 744 is installed at the end of the trigger rod 71 along the length direction of the trigger rod 71. The trigger rod 71 is installed with a second transmission assembly 17. The second transmission assembly 17 is connected to the push plate 16 and the first transmission rack 744. When the push plate 16 rotates, the push plate 16 can drive the first transmission rack 744 to move away from the bearing axis through the second transmission assembly 17, and the rotation angle of the push plate 16 is proportional to the moving distance of the first transmission rack 744.

[0051] The trigger rod 71 drives the push plate 16 to move during rotation. The push plate 16 stirs the lubricant in the first oil storage ring groove 4 during movement, so that the piston 73 can absorb the lubricant into the slide groove 8.

[0052] When there is less lubricant in the first oil storage ring groove 4, most of the lubricant is located in the inner ring 1. At this time, there is no need to supply the lubricant in the first oil storage ring groove 4 to the second oil storage ring groove 5; when there is more lubricant in the first oil storage ring groove 4, most of the lubricant is located in the outer ring 2. At this time, the lubricant in the first oil storage ring groove 4 needs to be supplied to the second oil storage ring groove 5.

[0053] The second transmission assembly 17 includes a driving rod 171, a lifting sleeve 172 and a third elastic reset member 173. The trigger rod 71 is hollow, and the driving rod 171 is rotatably installed in the trigger rod 71. One end of the push plate 16 passes through the rotation slot 18 and is fixedly connected to the driving rod 171. The end of the driving rod 171 close to the transmission gear 743 is formed with a threaded column 24. The end of the driving rod 171 away from the threaded column 24 is formed with a connecting column 28, and the third elastic reset member 173 is sleeved on the connecting column 28. The two ends of the third elastic reset member 173 are respectively fixedly connected to the driving rod 171 and the trigger rod 71. In the present application, the third elastic reset member 173 can be selected as a torsion spring, and the third elastic reset member 173 can drive the push plate 16 to rotate toward the side with a smaller rotation angle through the driving rod 171.

[0054] The lifting sleeve 172 is slidably installed in the trigger rod 71 along the length direction of the trigger rod 71, the first transmission rack 744 is fixedly installed at the end of the lifting sleeve 172 close to the transmission gear 743, and the end of the lifting sleeve 172 away from the transmission gear 743 is threadedly sleeved on the threaded column 24. Two guide blocks 19 are symmetrically installed on the outer wall of the lifting sleeve 172 along its own diameter direction, and the guide blocks 19 are installed along the length direction of the lifting sleeve 172. Two guide grooves 20 are provided on the inner wall of the trigger rod 71, and the guide groove 20 is located at one end of the trigger rod 71 close to the first transmission rack 744, and the two guide blocks 19 are both slidably installed in the two guide grooves 20 along the length direction of the trigger rod 71.

[0055] When the rotation angle of the push plate 16 increases, the push plate 16 drives the driving rod 171 to rotate in the trigger rod 71, and the driving rod 171 drives the threaded column 24 to rotate in the lifting sleeve 172. Under the action of the guide block 19 and the guide groove 20, the lifting sleeve 172 can move along the length direction of the trigger rod 71 toward the side close to the transmission gear 743, and the lifting sleeve 172 drives the first transmission rack 744 to move close to the transmission gear 743; when the rotation angle of the push plate 16 decreases, the push plate 16 can drive the first transmission rack 744 to move away from the transmission gear 743 through the driving rod 171, the threaded column 24 and the lifting sleeve 172.

[0056] When the lubricant in the first oil storage ring groove 4 is less, the resistance encountered by the push plate 16 during rotation is smaller, the rotation angle of the push plate 16 under the action of the third elastic reset member 173 is smaller, and the moving distance of the first transmission rack 744 is smaller. At this time, the first transmission rack 744 is separated from the transmission gear 743, so that the lubricant in the first oil storage ring groove 4 will not be supplied to the second oil storage ring groove 5; when the lubricant in the first oil storage ring groove 4 is more, the resistance encountered by the push plate 16 during rotation is larger, the rotation angle of the push plate 16 is larger, and the moving distance of the first transmission rack 744 is larger. At this time, the first transmission rack 744 is meshed with the transmission gear 743, so that the lubricant in the first oil storage ring groove 4 can be supplied to the second oil storage ring groove 5. Therefore, the oil supply mechanism 7 can automatically start or stop the oil supply according to the dosage of the lubricant in the first oil storage ring groove 4, so that the lubricant is more evenly distributed in the bearing.

[0057] Reference Figure 8 Two moving grooves 21 are symmetrically formed on the inner side wall of the lifting sleeve 172, and the moving grooves 21 are formed along the thread direction of the threaded column 24. Two locking grooves 22 are symmetrically formed on the inner side wall of the lifting sleeve 172, and the locking grooves 22 are formed along the circumferential direction of the lifting sleeve 172, and the locking grooves 22 are connected to one end of the moving groove 21 close to the driving rod 171. Two locking blocks 23 are symmetrically fixedly installed on the outer side wall of the threaded column 24, and the locking blocks 23 are slidably installed in the moving grooves 21 and the locking grooves 22.

[0058] When the rotation angle of the push plate 16 gradually increases, the threaded column 24 drives the two locking blocks 23 to rotate, and the locking blocks 23 move in the moving groove 21; when the push plate 16 rotates to the maximum angle, the locking blocks 23 enter the locking groove 22 from the moving groove 21, and the locking blocks 23 lock the lifting sleeve 172 through the locking groove 22, so that the lifting sleeve 172 will not move in the trigger rod 71, thereby making the first transmission rack 744 drive the transmission gear 743 to rotate more stably.

[0059] Reference Figure 7 When the lubricant in the first oil storage ring groove 4 is reduced, the third elastic reset member 173 releases the elastic potential energy to drive the driving rod 171 to rotate, and the driving rod 171 drives the locking block 23 to rotate from the locking groove 22 to the movable groove 21, thereby unlocking the lifting sleeve 172, so that the lifting sleeve 172 can drive the first transmission rack 744 to move and disengage from the transmission rack.

[0060] The implementation principle of a ball bearing in the embodiment of the present application is as follows: during the use of the bearing, the lubricant in the bearing will move to the first oil storage ring groove 4 of the outer ring 2 under the action of centrifugal force. When the inner ring 1 of the bearing rotates, the retainer 3 will rotate at a low speed. During the rotation of the retainer 3, the trigger rod 71 can be driven to move. The trigger rod 71 drives the piston 73 to move back and forth through the first transmission rack 744, the transmission gear 743, the second transmission rack 745, the transmission rod 742 and the elastic member 741. The piston 73 supplies the lubricant in the first oil storage ring groove 4 to the second oil storage ring groove 5. After the oil supply mechanism 7 supplies the lubricant to the second oil storage ring groove 5, the inner ring 1 rotates and throws the lubricant in the second oil storage ring groove 5 through the oil outlet 6 to between the ball 12 and the retainer 3, so that the lubricant can lubricate the ball 12 and the retainer 3, reducing the wear between the ball 12 and the retainer 3 and improving the service life of the bearing.

[0061] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A ball bearing, comprising an inner ring (1), an outer ring (2), a retainer (3) and a plurality of balls (12), wherein the plurality of balls (12) are arranged to roll between the inner ring (1) and the outer ring (2), and the retainer (3) is arranged on the plurality of balls (12), characterized in that: A first oil storage ring groove (4) is provided on the inner side wall of the outer ring (2), a second oil storage ring groove (5) is provided on the outer side wall of the inner ring (1), an oil outlet hole (6) is provided in the inner ring (1), one end of the oil outlet hole (6) is connected to the second oil storage ring groove (5), and the other end faces between the ball (12) and the retaining frame (3); an oil supply mechanism (7) is provided on the outer ring (2), and the oil supply mechanism (7) includes a trigger rod (71), an oil supply pipe (72), a piston (73) and a first transmission assembly (74); a slide groove (8) is provided on the inner side wall of the outer ring (2), and the piston (73) is slidably arranged in the slide groove (8); one end of the oil supply pipe (72) is arranged in the slide groove (8) of the outer ring (2), and the other end extends to the second oil storage ring groove (5), and the outer ring (2) is provided with a plurality of oil supply pipes (72). An oil inlet hole (9) is provided which connects the slide groove (8) and the first oil storage ring groove (4); the first transmission component (74) is arranged in the first oil storage ring groove (4) of the outer ring (2); the first transmission component (74) is connected to the piston (73); the trigger rod (71) is fixedly mounted on the outside of the retainer (3); the end of the trigger rod (71) extends into the first oil storage ring groove (4); when the retainer (3) drives the trigger rod (71) to move through the first transmission component (74), the first transmission component (74) drives the piston (73) to reciprocate in the slide groove (8) and supplies the lubricant in the first oil storage ring groove (4) into the second oil storage ring groove (5); the inner ring (1) rotates and throws the lubricant in the second oil storage ring groove (5) through the oil outlet hole (6) to between the ball (12) and the retainer (3);The first transmission assembly (74) comprises an elastic member (741), a transmission rod (742), a transmission gear (743), a first transmission rack (744) and a second transmission rack (745); the transmission gear (743) is rotatably disposed in a first oil storage ring groove (4) of the outer ring (2); the first transmission rack (744) is arc-shaped and disposed on the trigger rod (71); the first transmission rack (744) is meshed with the transmission gear (743); the second transmission rack (745) is slidably disposed in the outer ring (2) along the diameter direction of the bearing and is engaged with the transmission rack (745). The first transmission rack (744) is engaged with the gear (743), the second transmission rack (745) is staggered with the first transmission rack (744) along the axial direction of the bearing, the transmission rod (742) is slidably arranged in the outer ring (2), the two ends of the transmission rod (742) are respectively fixedly connected to the second transmission rack (745) and the piston (73), the elastic member (741) is arranged in the slide groove (8) of the outer ring (2) and abuts against the side wall of the piston (73) away from the bearing axial direction, the trigger rod (71) drives the first transmission rack (744) to move and mesh with the transmission gear (743), and the second transmission rack (745) is staggered with the first transmission rack (744) along the axial direction of the bearing, and the second transmission rack (74 ... second transmission rack (744) along the axial direction of A transmission rack (744) drives the piston (73) to move in a direction away from the bearing axis through a transmission gear (743), a second transmission rack (745) and a transmission rod (742). After the first transmission rack (744) is separated from the transmission gear (743), the elastic member (741) pushes the piston (73) to move in a direction close to the bearing axis. A check plate (10) is rotatably arranged in the oil supply pipe (72). A first elastic member for driving the check plate (10) to rotate and close the oil supply pipe (72) is arranged at a rotation position of the check plate (10). The first elastic reset member (11) is provided, when the piston (73) moves toward the direction close to the bearing axis, the lubricant pushes the check plate (10) to rotate and open the oil supply pipe (72), when the piston (73) moves toward the direction away from the bearing axis, the first elastic reset member (11) drives the check plate (10) to rotate and close the oil supply pipe (72), the outer ring (2) is located in the oil inlet hole (9) and is provided with a sealing door (13) for rotation, and the outer ring (2) is located at the rotation position of the sealing door (13) and is provided with a second elastic reset member (14) for pushing the sealing door (13) to rotate and close the oil inlet hole (9). ; 2. A ball bearing according to claim 1, characterized in that: A push plate (16) is provided at one end of the trigger rod (71) located in the first oil storage ring groove (4), and an end of the push plate (16) away from the trigger rod (71) is tilted in a direction away from the trigger rod (71).

3. A ball bearing according to claim 2, characterized in that: The push plate (16) is rotatably arranged on the trigger rod (71); the first transmission rack (744) is slidably arranged at the end of the trigger rod (71) along the length direction of the trigger rod (71) through the second transmission assembly (17); a second transmission assembly (17) is arranged inside the trigger rod (71); the second transmission assembly (17) is transmission-connected to the push plate (16) and the first transmission rack (744); and the rotation angle of the push plate (16) is proportional to the moving distance of the first transmission rack (744).

4. A ball bearing according to claim 3, characterized in that: The second transmission assembly (17) comprises a driving rod (171), a lifting sleeve (172) and a third elastic reset member (173); the driving rod (171) is coaxially rotatably arranged in the trigger rod (71); a rotation groove (18) is provided on the trigger rod (71); the push plate (16) passes through the rotation groove (18) and is fixedly connected to the driving rod (171); the third elastic reset member (173) is arranged in the trigger rod (71); two ends of the third elastic reset member (173) are respectively connected to the inner wall of the trigger rod (71) and the driving rod The lifting sleeve (172) is threadedly sleeved on the end of the driving rod (171) away from the bearing axis direction, the end of the lifting sleeve (172) extends to the outside of the trigger rod (71), the first transmission rack (744) is fixedly arranged on the end of the lifting sleeve (172), the trigger rod (71) is provided with a guide groove (20), the outer wall of the lifting sleeve (172) is provided with a guide block (19), and the guide block (19) is slidably arranged in the guide groove (20) along the moving direction of the lifting sleeve (172).

5. A ball bearing according to claim 4, characterized in that: A movable groove (21) is provided on the inner wall of the lifting sleeve (172) along the thread direction of the lifting sleeve (172); a locking groove (22) connected to the movable groove (21) is provided on the inner wall of the lifting sleeve (172) along its own circumferential direction; the locking groove (22) is located at the end of the movable groove (21) close to the bearing axis direction; a locking block (23) is fixedly provided on the outer wall of the driving rod (171); the locking block (23) is slidably provided in the movable groove (21) and the locking groove (22); when the lifting sleeve (172) drives the first transmission rack (744) to move and abut against the transmission gear (743), the locking block (23) moves into the locking groove (22) and limits and locks the lifting sleeve (172) along the length direction of the trigger rod (71).

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